Merge pull request #315 from moul/renovate/all

fix(deps): update golang.org/x/crypto commit hash to 198e437

.assets/flow-diagram.dot

@@ -1,12 +1,12 @@
 digraph {
-    rankdir=LR;
-    layout=dot;
-    node[shape=record];
-    
-    start[label="ssh sshportal";color=blue;fontcolor=blue;fontsize=20];
-    
+    node[shape=record;style=rounded;fontname="helvetica-bold"];
+    graph[layout=dot;rankdir=LR;overlap=prism;splines=true;fontname="helvetica-bold"];
+    edge[arrowhead=none;fontname="helvetica"];
+
+    start[label="\$\> ssh sshportal";color=blue;fontcolor=blue;fontsize=18];
+
     subgraph cluster_sshportal {
-        graph[fontsize=20;style=dashed;color=purple;fontcolor=purple];
+        graph[fontsize=18;color=gray;fontcolor=black];
         label="sshportal";
         {
             node[color=darkorange;fontcolor=darkorange];
@@ -17,25 +17,25 @@ digraph {
         }
         {
             node[color=darkgreen;fontcolor=darkgreen];
-            builtin_shell[label="built-in shell"];
-            ssh_proxy[label="SSH proxy"];
-            learn_key[label="learn key"];
+            builtin_shell[label="built-in\nconfig shell"];
+            ssh_proxy[label="SSH proxy\nJump-Host"];
+            learn_key[label="learn the\npub key"];
         }
-        err_and_exit[label="error and exit";color=red;fontcolor=red];
+        err_and_exit[label="\nerror\nand exit\n\n";color=red;fontcolor=red];
         { rank=same; ssh_proxy; builtin_shell; learn_key; err_and_exit; }
         { rank=same; known_user_key; unknown_user_key; }
     }
-    
+
     subgraph cluster_hosts {
         label="your hosts";
-        graph[fontsize=20;style=dashed;color=purple;fontcolor=purple];
+        graph[fontsize=18;color=gray;fontcolor=black];
         node[color=blue;fontcolor=blue];
-        
+
         host_1[label="root@host1"];
         host_2[label="user@host2:2222"];
         host_3[label="root@host3:1234"];
     }
-    
+
     {
         edge[color=blue];
         start -> known_user_key;
@@ -53,13 +53,13 @@ digraph {
     {
         edge[color=darkorange;fontcolor=darkorange];
         known_user_key -> acl_manager[label="user matches an existing host"];
-        unknown_user_key -> invite_manager[headlabel="user=invite:<token>"];
+        unknown_user_key -> invite_manager[label="user=invite:<token>";labelloc=b];
     }
     {
         edge[color=red;fontcolor=red];
         known_user_key -> err_and_exit[label="invalid user"];
         acl_manager -> err_and_exit[label="unauthorized"];
-        unknown_user_key -> err_and_exit[label="any other user"];
-        invite_manager -> err_and_exit[label="invalid token"];
+        unknown_user_key -> err_and_exit[label="any other user";constraint=false];
+        invite_manager -> err_and_exit[label="invalid token";constraint=false];
     }
 }

.circleci/config.yml

@@ -1,7 +1,7 @@
 defaults: &defaults
   working_directory: /go/src/moul.io/sshportal
   docker:
-    - image: circleci/golang:1.11
+    - image: circleci/golang:1.17.5
   environment:
     GO111MODULE: "on"
 
@@ -16,18 +16,6 @@ install_retry: &install_retry
 
 version: 2
 jobs:
-  go.build:
-    <<: *defaults
-    steps:
-      - checkout
-      - *install_retry
-      - run: /tmp/retry -m 3 go mod download
-      - run: /tmp/retry -m 3 go mod vendor
-      - run: /tmp/retry -m 3 make install
-      - run: GO111MODULE=off /tmp/retry -m 3 go test -v ./...
-      - run: /tmp/retry -m 3 curl -sfL https://install.goreleaser.com/github.com/golangci/golangci-lint.sh | sh -s v1.12.2
-      - run: PATH=$PATH:$(pwd)/bin /tmp/retry -m 3 make lint
-
   docker.integration:
     <<: *defaults
     steps:
@@ -36,9 +24,10 @@ jobs:
           name: Install Docker Compose
           command: |
             umask 022
-            curl -L https://github.com/docker/compose/releases/download/1.11.2/docker-compose-`uname -s`-`uname -m` > ~/docker-compose
+            curl -L https://github.com/docker/compose/releases/download/1.11.4/docker-compose-`uname -s`-`uname -m` > ~/docker-compose
       - setup_remote_docker:
           docker_layer_caching: true
+          version: 18.09.3 # https://github.com/golang/go/issues/40893
       - *install_retry
       - run: /tmp/retry -m 3 docker build -t moul/sshportal .
       - run: /tmp/retry -m 3 make integration
@@ -48,6 +37,4 @@ workflows:
   version: 2
   build_and_integration:
     jobs:
-      - go.build
       - docker.integration
-      # requires: docker.build?

.dockerignore

@@ -1,3 +1,5 @@
+# .git/  # should be kept for git-based versionning
+
 examples/
 .circleci/
 .assets/

.gitattributes

@@ -0,0 +1,17 @@
+# Auto detect text files and perform LF normalization
+* text=auto
+
+# Collapse vendored and generated files on GitHub
+AUTHORS linguist-generated
+vendor/* linguist-vendored
+rules.mk linguist-vendored
+*/vendor/* linguist-vendored
+*.gen.* linguist-generated
+*.pb.go linguist-generated
+*.pb.gw.go linguist-generated
+go.sum linguist-generated
+go.mod linguist-generated
+gen.sum linguist-generated
+
+# Reduce conflicts on markdown files
+*.md merge=union

.github/FUNDING.yml

@@ -0,0 +1,6 @@
+github: ["moul"]
+patreon: moul
+open_collective: sshportal
+custom:
+- "https://www.buymeacoffee.com/moul"
+- "https://manfred.life/donate"

.github/ISSUE_TEMPLATE.md

@@ -1,25 +1,15 @@
-<!-- Thanks for filling an issue!
+### Actual Result / Problem
 
-If this is a BUG REPORT, please:
-  - Fill in as much of the template below as you can
+When I do Foo, Bar happens...
 
-If this is a FEATURE REQUEST, please:
-  - Describe *in detail* the feature/behavior/change you would like to see
--->
+### Expected Result / Suggestion
 
-**What happened**:
+I expect that Foobar happens...
 
-**What you expected to happen**:
+### Some context
 
-**How to reproduce it (as minimally and precisely as possible)**:
-
-**Anything else we need to know?**:
-
-<!--
-**Environment**:
-- sshportal --version
-- ssh sshportal info
-- OS (e.g. from /etc/os-release): 
-- install method (e.g. go/docker/brew/...):
-- others:
--->
+Any screenshot to share?
+`sshportal --version`?
+`ssh sshportal info`?
+OS/Go version?
+...

.github/PULL_REQUEST_TEMPLATE.md

@@ -1,7 +1 @@
-<!--  Thanks for sending a pull request!  Here are some tips for you -->
-
-**What this PR does / why we need it**:
-
-**Which issue this PR fixes**: fixes #xxx, fixes #xxx...
-
-**Special notes for your reviewer**:
+<!-- thank you for your contribution! ❤️  -->

.github/dependabot.yml

@@ -0,0 +1,20 @@
+version: 2
+updates:
+- package-ecosystem: docker
+  directory: "/"
+  schedule:
+    interval: daily
+    time: "04:00"
+  open-pull-requests-limit: 10
+- package-ecosystem: github-actions
+  directory: "/"
+  schedule:
+    interval: daily
+    time: "04:00"
+  open-pull-requests-limit: 10
+- package-ecosystem: gomod
+  directory: "/"
+  schedule:
+    interval: daily
+    time: "04:00"
+  open-pull-requests-limit: 10

.github/renovate.json

@@ -2,5 +2,6 @@
   "extends": [
     "config:base"
   ],
-  "groupName": "all"
+  "groupName": "all",
+  "gomodTidy": true
 }

.github/workflows/ci.yml

@@ -0,0 +1,87 @@
+name: CI
+on:
+  push:
+    tags:
+      - v*
+    branches:
+      - master
+  pull_request:
+
+jobs:
+  docker-build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Build the Docker image
+        run: docker build . --file Dockerfile
+  golangci-lint:
+    name: golangci-lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: lint
+        uses: golangci/golangci-lint-action@v2.5.2
+        with:
+          version: v1.38
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+  tests-on-windows:
+    needs: golangci-lint # run after golangci-lint action to not produce duplicated errors
+    runs-on: windows-latest
+    strategy:
+      matrix:
+        golang:
+          - 1.16.x
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: ${{ matrix.golang }}
+      - name: Run tests on Windows
+        run: make.exe unittest
+        continue-on-error: true
+  tests-on-mac:
+    needs: golangci-lint # run after golangci-lint action to not produce duplicated errors
+    runs-on: macos-latest
+    strategy:
+      matrix:
+        golang:
+          - 1.16.x
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: ${{ matrix.golang }}
+      - uses: actions/cache@v2.1.7
+        with:
+          path: ~/go/pkg/mod
+          key: ${{ runner.os }}-go-${{ matrix.golang }}-${{ hashFiles('**/go.sum') }}
+          restore-keys: |
+            ${{ runner.os }}-go-${{ matrix.golang }}-
+      - name: Run tests on Unix-like operating systems
+        run: make unittest
+  tests-on-linux:
+    needs: golangci-lint # run after golangci-lint action to not produce duplicated errors
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        golang:
+          - 1.13.x
+          - 1.14.x
+          - 1.15.x
+          - 1.16.x
+    steps:
+      - uses: actions/checkout@v2
+      - name: Install Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: ${{ matrix.golang }}
+      - uses: actions/cache@v2.1.7
+        with:
+          path: ~/go/pkg/mod
+          key: ${{ runner.os }}-go-${{ matrix.golang }}-${{ hashFiles('**/go.sum') }}
+          restore-keys: |
+            ${{ runner.os }}-go-${{ matrix.golang }}-
+      - name: Run tests on Unix-like operating systems
+        run: make unittest

.github/workflows/release.yml

@@ -0,0 +1,13 @@
+name: Semantic Release
+
+on: push
+
+jobs:
+  semantic-release:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@master
+      - uses: codfish/semantic-release-action@v1.9.0
+        if: github.ref == 'refs/heads/master'
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.gitignore

@@ -1,4 +1,12 @@
+coverage.txt
+dist/
+*~
+*#
+.*#
+.DS_Store
 /log/
 /sshportal
 *.db
-/data
+/data
+sshportal.history
+.idea

.golangci.yml

@@ -1,8 +1,10 @@
 run:
   deadline: 1m
   tests: false
-  #skip-files:
-  #  - ".*\\.gen\\.go"
+  skip-files:
+    - "testing.go"
+    - ".*\\.pb\\.go"
+    - ".*\\.gen\\.go"
 
 linters-settings:
   golint:
@@ -18,17 +20,36 @@ linters-settings:
 linters:
   disable-all: true
   enable:
-    - goconst
-    - misspell
+    - bodyclose
     - deadcode
-    - misspell
-    - structcheck
+    - depguard
+    - dogsled
+    #- dupl
     - errcheck
-    - unused
-    - varcheck
-    - staticcheck
-    - unconvert
+    #- funlen
+    - gochecknoinits
+    #- gocognit
+    - goconst
+    - gocritic
+    #- gocyclo
     - gofmt
     - goimports
     - golint
+    - gosimple
+    - govet
     - ineffassign
+    - interfacer
+    #- maligned
+    - misspell
+    - nakedret
+    - prealloc
+    - scopelint
+    - staticcheck
+    - structcheck
+    #- stylecheck
+    - typecheck
+    - unconvert
+    - unparam
+    - unused
+    - varcheck
+    - whitespace

.goreleaser.yml

@@ -0,0 +1,29 @@
+builds:
+  -
+    goos: [linux, darwin]
+    goarch: [386, amd64, arm, arm64]
+    ldflags:
+    - -s -w -X main.GitSha={{.ShortCommit}} -X main.GitBranch=master -X main.GitTag={{.Version}}
+archives:
+  - wrap_in_directory: true
+checksum:
+  name_template: 'checksums.txt'
+snapshot:
+  name_template: "{{ .Tag }}-next"
+changelog:
+  sort: asc
+  filters:
+    exclude:
+    - '^docs:'
+    - '^test:'
+brews:
+  -
+    name: sshportal
+    github:
+      owner: moul
+      name: homebrew-moul
+    commit_author:
+      name: moul-bot
+      email: "m+bot@42.am"
+    homepage: https://manfred.life/sshportal
+    description: "Simple, fun and transparent SSH (and telnet) bastion"

.releaserc.js

@@ -0,0 +1,8 @@
+module.exports = {
+    branch: 'master',
+    plugins: [
+        '@semantic-release/commit-analyzer',
+        '@semantic-release/release-notes-generator',
+        '@semantic-release/github',
+    ],
+};

AUTHORS

@@ -0,0 +1,39 @@
+# This file lists all individuals having contributed content to the repository.
+# For how it is generated, see 'https://github.com/moul/rules.mk'
+
+ahh <ahamidullah@gmail.com>
+Alen Masic <alenn.masic@gmail.com>
+Alexander Turner <me@alexturner.co>
+bozzo <bozzo@users.noreply.github.com>
+Darko Djalevski <darko.djalevski@inplayer.com>
+dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
+fossabot <badges@fossa.io>
+ImgBotApp <ImgBotHelp@gmail.com>
+Jason Wessel <jason.wessel@windriver.com>
+Jean-Louis Férey <jeanlouis.ferey@orange.com>
+jerard@alfa-safety.fr <jrrdev@users.noreply.github.com>
+Jess <jessachandler@gmail.com>
+Jonathan Lestrelin <jonathan.lestrelin@gmail.com>
+Julien Dessaux <julien.dessaux@adyxax.org>
+Konstantin Bakaras <k.bakaras@voskhod.ru>
+Manfred Touron <94029+moul@users.noreply.github.com>
+Manfred Touron <m@42.am>
+Manuel <manuel.sabban@nbs-system.com>
+Manuel Sabban <manu@sabban.eu>
+Manuel Sabban <msa@nbs-system.com>
+Mathieu Pasquet <mathieu.pasquet@alterway.fr>
+matteyeux <matteyeux@users.noreply.github.com>
+Mikael Rapp <micke.rapp@gmail.com>
+MitaliBo <mitali.bisht14@gmail.com>
+moul-bot <bot@moul.io>
+Nelly Asher <karmelylle@rambler.ru>
+NocFlame <aad@nocflame.se>
+Quentin Perez <qperez42@gmail.com>
+Renovate Bot <bot@renovateapp.com>
+Sergey Yashchuk <11705746+GreyOBox@users.noreply.github.com>
+Sergey Yashchuk <sergey.yashchuk@coins.ph>
+Shawn Wang <shawn111@gmail.com>
+Valentin Daviot <valentin.daviot@alterway.fr>
+valentin.daviot <valentin.daviot@alterway.fr>
+welderpb <welderpb@users.noreply.github.com>
+Дмитрий Шульгачик <tech@uniplug.ru>

CHANGELOG.md

@@ -1,107 +1,3 @@
 # Changelog
 
-## master (unreleased)
-
-* Bump deps
-
-## v1.9.0 (2018-11-18)
-
-* Add `hostgroup update` and `usergroup update` commands ([#58](https://github.com/moul/sshportal/pull/58)) by [@adyxax](https://github.com/adyxax)
-* Add socket timeout ([#80](https://github.com/moul/sshportal/pull/80)) by [@ahhx](https://github.com/ahhx)
-* Add a flag to list only active sessions ([#76](https://github.com/moul/sshportal/pull/76)) by [@vdaviot](https://github.com/vdaviot)
-* Unset hop on host ([#74](https://github.com/moul/sshportal/pull/74)) by [@vdaviot](https://github.com/vdaviot)
-* Fix session status and duration display ([#75](https://github.com/moul/sshportal/pull/75)) by [@vdaviot](https://github.com/vdaviot)
-* Fix log path and filename on Windows ([#78](https://github.com/moul/sshportal/pull/78)) by [@Raerten](https://github.com/Raerten)
-* Admin user is not editable ([#69](https://github.com/moul/sshportal/pull/69)) by [@alenn-m](https://github.com/alenn-m)
-* Switch to go modules (go1.11) ([#83](https://github.com/moul/sshportal/pull/83))
-* Switch to moul.io/sshportal canonical URL ([#86](https://github.com/moul/sshportal/pull/86))
-* Switch to golangci-lint ([#87](https://github.com/moul/sshportal/pull/87))
-
-## v1.8.0 (2018-04-02)
-
-* The default created user now has the same username as the user starting sshportal (was hardcoded "admin")
-* Add Telnet support
-* Add TTY audit feature ([#23](https://github.com/moul/sshportal/issues/23)) by [@sabban](https://github.com/sabban)
-* Fix `--assign-*` commands when using MySQL driver ([#45](https://github.com/moul/sshportal/issues/45))
-* Add *HOP* support, an efficient and integrated way of using a jump host transparently ([#47](https://github.com/moul/sshportal/issues/47)) by [@mathieui](https://github.com/mathieui)
-* Fix panic on some `ls` commands ([#54](https://github.com/moul/sshportal/pull/54)) by [@jle64](https://github.com/jle64)
-* Add tunnels (`direct-tcp`) support with logging ([#44](https://github.com/moul/sshportal/issues/44)) by [@sabban](https://github.com/sabban)
-* Add `key import` command ([#52](https://github.com/moul/sshportal/issues/52)) by [@adyxax](https://github.com/adyxax)
-* Add 'exec' logging ([#40](https://github.com/moul/sshportal/issues/40)) by [@sabban](https://github.com/sabban)
-
-## v1.7.1 (2018-01-03)
-
-* Return non-null exit-code on authentication error
-* **hotfix**: repair invite system (broken in v1.7.0)
-
-## v1.7.0 (2018-01-02)
-
-Breaking changes:
-* Use `sshportal server` instead of `sshportal` to start a new server (nothing to change if using the docker image)
-* Remove `--config-user` and `--healthcheck-user` global options
-
-Changes:
-* Fix connection failure when sending too many environment variables (fix [#22](https://github.com/moul/sshportal/issues/22))
-* Fix panic when entering empty command (fix [#13](https://github.com/moul/sshportal/issues/13))
-* Add `config backup --ignore-events` option
-* Add `sshportal healthcheck [--addr=] [--wait] [--quiet]` cli command
-* Add [Docker Healthcheck](https://docs.docker.com/engine/reference/builder/#healthcheck) helper
-* Support Putty (fix [#24](https://github.com/moul/sshportal/issues/24))
-
-## v1.6.0 (2017-12-12)
-
-* Add `--latest` and `--quiet` options to `ls` commands
-* Add `healthcheck` user
-* Add `key show KEY` command
-
-## v1.5.0 (2017-12-02)
-
-* Create Session objects on each connections (history)
-* Connection history
-* Audit log
-* Add dynamic strict host key checking (learning on the first time, strict on the next ones)
-* Add-back MySQL support (experimental)
-* Fix some backup/restore bugs
-
-## v1.4.0 (2017-11-24)
-
-* Add 'key setup' command (easy SSH key installation)
-* Add Updated and Created fields in 'ls' commands
-* Add `--aes-key` option to encrypt sensitive data
-
-## v1.3.0 (2017-11-23)
-
-* More details in 'ls' commands
-* Add 'host update' command (fix [#2](https://github.com/moul/sshportal/issues/2))
-* Add 'user update' command (fix [#3](https://github.com/moul/sshportal/issues/3))
-* Add 'acl update' command (fix [#4](https://github.com/moul/sshportal/issues/4))
-* Allow connecting to the shell mode with the registered username or email (fix [#5](https://github.com/moul/sshportal/issues/5))
-* Add 'listhosts' role (fix [#5](https://github.com/moul/sshportal/issues/5))
-
-## v1.2.0 (2017-11-22)
-
-* Support adding multiple `--group` links on `host create` and `user create`
-* Use govalidator to perform more consistent input validation
-* Use a database migration system
-
-## v1.1.0 (2017-11-15)
-
-* Improve versionning (static VERSION + dynamic GIT_* info)
-* Configuration management (backup + restore)
-* Implement Exit (fix [#6](https://github.com/moul/sshportal/pull/6))
-* Disable mysql support (not fully working right now)
-* Set random seed properly
-
-## v1.0.0 (2017-11-14)
-
-Initial version
-
-* Host management
-* User management
-* User Group management
-* Host Group management
-* Host Key management
-* User Key management
-* ACL management
-* Connect to host using key or password
-* Admin commands can be run directly or in an interactive shell
+Here: https://github.com/moul/sshportal/releases

Dockerfile

@@ -1,7 +1,10 @@
 # build
-FROM            golang:1.11 as builder
-COPY            . /go/src/moul.io/sshportal
+FROM golang:1.17.6 as builder
+ENV             GO111MODULE=on
 WORKDIR         /go/src/moul.io/sshportal
+COPY            go.mod go.sum ./
+RUN             go mod download
+COPY            . ./
 RUN             make _docker_install
 
 # minimal runtime

LICENSE

@@ -186,7 +186,7 @@
       same "printed page" as the copyright notice for easier
       identification within third-party archives.
 
-   Copyright 2017 Manfred Touron <m@42.am>
+   Copyright 2017-2021 Manfred Touron <m@42.am>
 
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.

Makefile

@@ -1,18 +1,16 @@
-GIT_SHA ?=	$(shell git rev-parse HEAD)
-GIT_TAG ?=	$(shell git describe --tags --always)
-GIT_BRANCH ?=	$(shell git rev-parse --abbrev-ref HEAD)
-LDFLAGS ?=	-X main.GitSha=$(GIT_SHA) -X main.GitTag=$(GIT_TAG) -X main.GitBranch=$(GIT_BRANCH)
-VERSION ?=	$(shell grep 'VERSION =' main.go | cut -d'"' -f2)
+GOPKG ?= moul.io/sshportal
+GOBINS ?= .
+DOCKER_IMAGE ?= moul/sshportal
+
+VERSION ?= `git describe --tags --always`
+VCS_REF ?= `git rev-parse --short HEAD`
+GO_INSTALL_OPTS = -ldflags="-X main.GitSha=$(VCS_REF) -X main.GitTag=$(VERSION)"
+PORT ?= 2222
+
+include rules.mk
+
+DB_VERSION ?=	v$(shell grep -E 'ID: "[0-9]+",' pkg/bastion/dbinit.go | tail -n 1 | cut -d'"' -f2)
 AES_KEY ?=	my-dummy-aes-key
-GO ?=		GO111MODULE=on go
-
-.PHONY: install
-install:
-	$(GO) install -v -ldflags '$(LDFLAGS)' .
-
-.PHONY: docker.build
-docker.build:
-	docker build -t moul/sshportal .
 
 .PHONY: integration
 integration:
@@ -27,21 +25,23 @@ dev:
 	-$(GO) get github.com/githubnemo/CompileDaemon
 	CompileDaemon -exclude-dir=.git -exclude=".#*" -color=true -command="./sshportal server --debug --bind-address=:$(PORT) --aes-key=$(AES_KEY) $(EXTRA_RUN_OPTS)" .
 
-.PHONY: test
-test:
-	$(GO) test -i ./...
-	$(GO) test -v ./...
-
-.PHONY: lint
-lint:
-	golangci-lint run --verbose ./...
-
 .PHONY: backup
 backup:
 	mkdir -p data/backups
-	cp sshportal.db data/backups/$(shell date +%s)-$(VERSION)-sshportal.sqlite
+	cp sshportal.db data/backups/$(shell date +%s)-$(DB_VERSION)-sshportal.sqlite
 
 doc:
 	dot -Tsvg ./.assets/overview.dot > ./.assets/overview.svg
 	dot -Tsvg ./.assets/cluster-mysql.dot > ./.assets/cluster-mysql.svg
 	dot -Tsvg ./.assets/flow-diagram.dot > ./.assets/flow-diagram.svg
+	dot -Tpng ./.assets/overview.dot > ./.assets/overview.png
+	dot -Tpng ./.assets/cluster-mysql.dot > ./.assets/cluster-mysql.png
+	dot -Tpng ./.assets/flow-diagram.dot > ./.assets/flow-diagram.png
+
+.PHONY: goreleaser
+goreleaser:
+	GORELEASER_GITHUB_TOKEN=$(GORELEASER_GITHUB_TOKEN) GITHUB_TOKEN=$(GITHUB_TOKEN) goreleaser --rm-dist
+
+.PHONY: goreleaser-dry-run
+goreleaser-dry-run:
+	goreleaser --snapshot --skip-publish --rm-dist

README.md

@@ -1,65 +1,46 @@
 # sshportal
 
 [![CircleCI](https://circleci.com/gh/moul/sshportal.svg?style=svg)](https://circleci.com/gh/moul/sshportal)
-[![Docker Build Status](https://img.shields.io/docker/build/moul/sshportal.svg)](https://hub.docker.com/r/moul/sshportal/)
-[![Go Report Card](https://goreportcard.com/moul.io/sshportal)](https://goreportcard.com/report/moul.io/sshportal)
+[![Go Report Card](https://goreportcard.com/badge/moul.io/sshportal)](https://goreportcard.com/report/moul.io/sshportal)
 [![GoDoc](https://godoc.org/moul.io/sshportal?status.svg)](https://godoc.org/moul.io/sshportal)
-[![License](https://img.shields.io/github/license/moul/sshportal.svg)](https://github.com/moul/sshportal/blob/master/LICENSE)
+[![Financial Contributors on Open Collective](https://opencollective.com/sshportal/all/badge.svg?label=financial+contributors)](https://opencollective.com/sshportal) [![License](https://img.shields.io/github/license/moul/sshportal.svg)](https://github.com/moul/sshportal/blob/master/LICENSE)
 [![GitHub release](https://img.shields.io/github/release/moul/sshportal.svg)](https://github.com/moul/sshportal/releases)
-[![FOSSA Status](https://app.fossa.io/api/projects/git%2Bgithub.com%2Fmoul%2Fsshportal.svg?type=shield)](https://app.fossa.io/projects/git%2Bgithub.com%2Fmoul%2Fsshportal?ref=badge_shield)
+<!-- temporarily broken? [![Docker Build Status](https://img.shields.io/docker/build/moul/sshportal.svg)](https://hub.docker.com/r/moul/sshportal/) -->
 
 Jump host/Jump server without the jump, a.k.a Transparent SSH bastion
 
-![sshportal demo](https://github.com/moul/sshportal/raw/master/.assets/demo.gif)
+<img src="https://raw.githubusercontent.com/moul/sshportal/master/.assets/bastion.jpg" width="50%">
+
+Features include: independence of users and hosts, convenient user invite system, connecting to servers that don't support SSH keys, various levels of access, and many more. Easy to install, run and configure.
+
+![Flow Diagram](https://raw.githubusercontent.com/moul/sshportal/master/.assets/flow-diagram.png)
 
 ---
 
-## Overview
+## Contents
 
-![sshportal overview](https://raw.github.com/moul/sshportal/master/.assets/overview.svg?sanitize=true)
+<!-- toc -->
 
-## Features
+- [Installation and usage](#installation-and-usage)
+- [Use cases](#use-cases)
+- [Features and limitations](#features-and-limitations)
+- [Docker](#docker)
+- [Manual Install](#manual-install)
+- [Backup / Restore](#backup--restore)
+- [built-in shell](#built-in-shell)
+- [Demo data](#demo-data)
+- [Shell commands](#shell-commands)
+- [Healthcheck](#healthcheck)
+- [portal alias (.ssh/config)](#portal-alias-sshconfig)
+- [Scaling](#scaling)
+- [Under the hood](#under-the-hood)
+- [Testing](#testing)
 
-* Single autonomous binary (~10-20Mb) with no runtime dependencies (embeds ssh server and client)
-* Portable / Cross-platform (regularly tested on linux and OSX/darwin)
-* Store data in [Sqlite3](https://www.sqlite.org/) or [MySQL](https://www.mysql.com) (probably easy to add postgres, mssql thanks to gorm)
-* Stateless -> horizontally scalable when using [MySQL](https://www.mysql.com) as the backend
-* Connect to remote host using key or password
-* Admin commands can be run directly or in an interactive shell
-* Host management
-* User management (invite, group, stats)
-* Host Key management (create, remove, update, import)
-* Automatic remote host key learning
-* User Key management (multile keys per user)
-* ACL management (acl+user-groups+host-groups)
-* User roles (admin, trusted, standard, ...)
-* User invitations (no more "give me your public ssh key please")
-* Easy server installation (generate shell command to setup `authorized_keys`)
-* Sensitive data encryption
-* Session management (see active connections, history, stats, stop)
-* Audit log (logging every user action)
-* Record TTY Session
-* Tunnels logging
-* Host Keys verifications shared across users
-* Healthcheck user (replying OK to any user)
-* SSH compatibility
-  * ipv4 and ipv6 support
-  * [`scp`](https://linux.die.net/man/1/scp) support
-  * [`rsync`](https://linux.die.net/man/1/rsync) support
-  * [tunneling](https://www.ssh.com/ssh/tunneling/example) (local forward, remote forward, dynamic forward) support
-  * [`sftp`](https://www.ssh.com/ssh/sftp/) support
-  * [`ssh-agent`](https://www.ssh.com/ssh/agent) support
-  * [`X11 forwarding`](http://en.tldp.org/HOWTO/XDMCP-HOWTO/ssh.html) support
-  * Git support (can be used to easily use multiple user keys on GitHub, or access your own firewalled gitlab server)
-  * Do not require any SSH client modification or custom `.ssh/config`, works with every tested SSH programming libraries and every tested SSH clients
-* SSH to non-SSH proxy
-  * [Telnet](https://www.ssh.com/ssh/telnet) support
+<!-- tocstop -->
 
-## (Known) limitations
+---
 
-* Does not work (yet?) with [`mosh`](https://mosh.org/)
-
-## Usage
+## Installation and usage
 
 Start the server
 
@@ -80,6 +61,8 @@ Shared connection to localhost closed.
 $
 ```
 
+If the association fails and you are promted for a password, verify that the host you're connecting from has a SSH key set up or generate one with ```ssh-keygen -t rsa```
+
 Drop an interactive administrator shell
 
 ```console
@@ -139,15 +122,159 @@ To associate this account with a key, use the following SSH user: 'invite:NfHK5a
 config>
 ```
 
-## Flow Diagram
+Demo gif:
+![sshportal demo](https://github.com/moul/sshportal/raw/master/.assets/demo.gif)
 
-![Flow Diagram](https://raw.github.com/moul/sshportal/master/.assets/flow-diagram.svg?sanitize=true)
+---
+
+## Use cases
+
+Used by educators to provide temporary access to students. [Feedback from a teacher](https://github.com/moul/sshportal/issues/64). The author is using it in one of his projects, *pathwar*, to dynamically configure hosts and users, so that he can give temporary accesses for educational purposes.
+
+*vptech*, the vente-privee.com technical team (a group of over 6000 people) is using it internally to manage access to servers/routers, saving hours on configuration management and not having to share the configuration information.
+
+There are companies who use a jump host to monitor connections at a single point.
+
+A hosting company is using SSHportal for its “logging” feature, among the others. As every session is logged and introspectable, they have a detailed history of who performed which action. This company made its own contribution on the project, allowing the support of [more than 65.000 sessions in the database](https://github.com/moul/sshportal/pull/76).
+
+The project has also received [multiple contributions from a security researcher](https://github.com/moul/sshportal/pulls?q=is%3Apr+author%3Asabban+sort%3Aupdated-desc) that made a thesis on quantum cryptography. This person uses SSHportal in their security-hardened hosting company.
+
+If you need to invite multiple people to an event (hackathon, course, etc), the day before the event you can create multiple accounts at once, print the invite, and distribute the paper.
+
+---
+
+## Features and limitations
+
+* Single autonomous binary (~10-20Mb) with no runtime dependencies (embeds ssh server and client)
+* Portable / Cross-platform (regularly tested on linux and OSX/darwin)
+* Store data in [Sqlite3](https://www.sqlite.org/) or [MySQL](https://www.mysql.com) (probably easy to add postgres, mssql thanks to gorm)
+* Stateless -> horizontally scalable when using [MySQL](https://www.mysql.com) as the backend
+* Connect to remote host using key or password
+* Admin commands can be run directly or in an interactive shell
+* Host management
+* User management (invite, group, stats)
+* Host Key management (create, remove, update, import)
+* Automatic remote host key learning
+* User Key management (multile keys per user)
+* ACL management (acl+user-groups+host-groups)
+* User roles (admin, trusted, standard, ...)
+* User invitations (no more "give me your public ssh key please")
+* Easy server installation (generate shell command to setup `authorized_keys`)
+* Sensitive data encryption
+* Session management (see active connections, history, stats, stop)
+* Audit log (logging every user action)
+* Record TTY Session (with [ttyrec](https://en.wikipedia.org/wiki/Ttyrec) format, use `ttyplay` for replay)
+* Tunnels logging
+* Host Keys verifications shared across users
+* Healthcheck user (replying OK to any user)
+* SSH compatibility
+  * ipv4 and ipv6 support
+  * [`scp`](https://linux.die.net/man/1/scp) support
+  * [`rsync`](https://linux.die.net/man/1/rsync) support
+  * [tunneling](https://www.ssh.com/ssh/tunneling/example) (local forward, remote forward, dynamic forward) support
+  * [`sftp`](https://www.ssh.com/ssh/sftp/) support
+  * [`ssh-agent`](https://www.ssh.com/ssh/agent) support
+  * [`X11 forwarding`](http://en.tldp.org/HOWTO/XDMCP-HOWTO/ssh.html) support
+  * Git support (can be used to easily use multiple user keys on GitHub, or access your own firewalled gitlab server)
+  * Do not require any SSH client modification or custom `.ssh/config`, works with every tested SSH programming libraries and every tested SSH clients
+* SSH to non-SSH proxy
+  * [Telnet](https://www.ssh.com/ssh/telnet) support
+
+**(Known) limitations**
+
+* Does not work (yet?) with [`mosh`](https://mosh.org/)
+* It is not possible for a user to access a host with the same name as the user. This is easily circumvented by changing the user name, especially since the most common use cases does not expose it.
+* It is not possible access a host named `healthcheck` as this is a built in command.
+
+---
+
+## Docker
+
+Docker is the recommended way to run sshportal.
+
+An [automated build is setup on the Docker Hub](https://hub.docker.com/r/moul/sshportal/tags/).
+
+```console
+# Start a server in background
+#   mount `pwd` to persist the sqlite database file
+docker run -p 2222:2222 -d --name=sshportal -v "$(pwd):$(pwd)" -w "$(pwd)" moul/sshportal:v1.10.0
+
+# check logs (mandatory on first run to get the administrator invite token)
+docker logs -f sshportal
+```
+
+The easier way to upgrade sshportal is to do the following:
+
+```sh
+# we consider you were using an old version and you want to use the new version v1.10.0
+
+# stop and rename the last working container + backup the database
+docker stop sshportal
+docker rename sshportal sshportal_old
+cp sshportal.db sshportal.db.bkp
+
+# run the new version
+docker run -p 2222:2222 -d --name=sshportal -v "$(pwd):$(pwd)" -w "$(pwd)" moul/sshportal:v1.10.0
+# check the logs for migration or cross-version incompabitility errors
+docker logs -f sshportal
+```
+
+Now you can test ssh-ing to sshportal to check if everything looks OK.
+
+In case of problem, you can rollback to the latest working version with the latest working backup, using:
+
+```sh
+docker stop sshportal
+docker rm sshportal
+cp sshportal.db.bkp sshportal.db
+docker rename sshportal_old sshportal
+docker start sshportal
+docker logs -f sshportal
+```
+
+---
+
+## Manual Install
+
+Get the latest version using GO.
+
+```sh
+GO111MODULE=on go get -u moul.io/sshportal
+```
+
+---
+
+## Backup / Restore
+
+sshportal embeds built-in backup/restore methods which basically import/export JSON objects:
+
+```sh
+# Backup
+ssh portal config backup  > sshportal.bkp
+
+# Restore
+ssh portal config restore < sshportal.bkp
+```
+
+This method is particularly useful as it should be resistant against future DB schema changes (expected during development phase).
+
+I suggest you to be careful during this development phase, and use an additional backup method, for example:
+
+```sh
+# sqlite dump
+sqlite3 sshportal.db .dump > sshportal.sql.bkp
+
+# or just the immortal cp
+cp sshportal.db sshportal.db.bkp
+```
+
+---
 
 ## built-in shell
 
 `sshportal` embeds a configuration CLI.
 
-By default, the configuration user is `admin`, (can be changed using `--config-user=<value>` when starting the server.
+By default, the configuration user is `admin`, (can be changed using `--config-user=<value>` when starting the server. The shell is also accessible through `ssh [username]@portal.example.org`.
 
 Each commands can be run directly by using this syntax: `ssh admin@portal.example.org <command> [args]`:
 
@@ -157,7 +284,29 @@ ssh admin@portal.example.org host inspect toto
 
 You can enter in interactive mode using this syntax: `ssh admin@portal.example.org`
 
-### Synopsis
+![sshportal overview](https://raw.github.com/moul/sshportal/master/.assets/overview.png)
+
+---
+
+## Demo data
+
+The following servers are freely available, without external registration,
+it makes it easier to quickly test `sshportal` without configuring your own servers to accept sshportal connections.
+
+```
+ssh portal host create new@sdf.org
+ssh sdf@portal
+
+ssh portal host create test@whoami.filippo.io
+ssh whoami@portal
+
+ssh portal host create test@chat.shazow.net
+ssh chat@portal
+```
+
+---
+
+## Shell commands
 
 ```sh
 # acl management
@@ -180,11 +329,11 @@ event inspect [-h] EVENT...
 
 # host management
 host help
-host create [-h] [--name=<value>] [--password=<value>] [--comment=<value>] [--key=KEY] [--group=HOSTGROUP...] [--hop=HOST] <username>[:<password>]@<host>[:<port>]
+host create [-h] [--name=<value>] [--password=<value>] [--comment=<value>] [--key=KEY] [--group=HOSTGROUP...] [--hop=HOST] [--logging=MODE] <username>[:<password>]@<host>[:<port>]
 host inspect [-h] [--decrypt] HOST...
 host ls [-h] [--latest] [--quiet]
 host rm [-h] HOST...
-host update [-h] [--name=<value>] [--comment=<value>] [--key=KEY] [--assign-group=HOSTGROUP...] [--unassign-group=HOSTGROUP...] [--set-hop=HOST] [--unset-hop] HOST...
+host update [-h] [--name=<value>] [--comment=<value>] [--key=KEY] [--assign-group=HOSTGROUP...] [--unassign-group=HOSTGROUP...] [--logging-MODE] [--set-hop=HOST] [--unset-hop] HOST...
 
 # hostgroup management
 hostgroup help
@@ -218,7 +367,7 @@ user update [-h] [--name=<value>] [--email=<value>] [--set-admin] [--unset-admin
 
 # usergroup management
 usergroup help
-hostgroup create [-h] [--name=<value>] [--comment=<value>]
+usergroup create [-h] [--name=<value>] [--comment=<value>]
 usergroup inspect [-h] USERGROUP...
 usergroup ls [-h] [--latest] [--quiet]
 usergroup rm [-h] USERGROUP...
@@ -230,120 +379,7 @@ info [-h]
 version [-h]
 ```
 
-## Docker
-
-Docker is the recommended way to run sshportal.
-
-An [automated build is setup on the Docker Hub](https://hub.docker.com/r/moul/sshportal/tags/).
-
-```console
-# Start a server in background
-#   mount `pwd` to persist the sqlite database file
-docker run -p 2222:2222 -d --name=sshportal -v "$(pwd):$(pwd)" -w "$(pwd)" moul/sshportal:v1.9.0
-
-# check logs (mandatory on first run to get the administrator invite token)
-docker logs -f sshportal
-```
-
-The easier way to upgrade sshportal is to do the following:
-
-```sh
-# we consider you were using an old version and you want to use the new version v1.9.0
-
-# stop and rename the last working container + backup the database
-docker stop sshportal
-docker rename sshportal sshportal_old
-cp sshportal.db sshportal.db.bkp
-
-# run the new version
-docker run -p 2222:2222 -d --name=sshportal -v "$(pwd):$(pwd)" -w "$(pwd)" moul/sshportal:v1.9.0
-# check the logs for migration or cross-version incompabitility errors
-docker logs -f sshportal
-```
-
-Now you can test ssh-ing to sshportal to check if everything looks OK.
-
-In case of problem, you can rollback to the latest working version with the latest working backup, using:
-
-```sh
-docker stop sshportal
-docker rm sshportal
-cp sshportal.db.bkp sshportal.db
-docker rename sshportal_old sshportal
-docker start sshportal
-docker logs -f sshportal
-```
-
-## Manual Install
-
-Get the latest version using GO.
-
-```sh
-go get -u moul.io/sshportal
-```
-
-## portal alias (.ssh/config)
-
-Edit your `~/.ssh/config` file (create it first if needed)
-
-```ini
-Host portal
-  User      admin
-  Port      2222       # portal port
-  HostName  127.0.0.1  # portal hostname
-```
-
-```bash
-# you can now run a shell using this:
-ssh portal
-# instead of this:
-ssh localhost -p 2222 -l admin
-
-# or connect to hosts using this:
-ssh hostname@portal
-# instead of this:
-ssh localhost -p 2222 -l hostname
-```
-
-## Backup / Restore
-
-sshportal embeds built-in backup/restore methods which basically import/export JSON objects:
-
-```sh
-# Backup
-ssh portal config backup  > sshportal.bkp
-
-# Restore
-ssh portal config restore < sshportal.bkp
-```
-
-This method is particularly useful as it should be resistant against future DB schema changes (expected during development phase).
-
-I suggest you to be careful during this development phase, and use an additional backup method, for example:
-
-```sh
-# sqlite dump
-sqlite3 sshportal.db .dump > sshportal.sql.bkp
-
-# or just the immortal cp
-cp sshportal.db sshportal.db.bkp
-```
-
-## Demo data
-
-The following servers are freely available, without external registration,
-it makes it easier to quickly test `sshportal` without configuring your own servers to accept sshportal connections.
-
-```
-ssh portal host create new@sdf.org
-ssh sdf@portal
-
-ssh portal host create test@whoami.filippo.io
-ssh whoami@portal
-
-ssh portal host create test@chat.shazow.net
-ssh chat@portal
-```
+---
 
 ## Healthcheck
 
@@ -377,6 +413,33 @@ $ sshportal healthcheck --wait && ssh sshportal -l admin
 config>
 ```
 
+---
+
+## portal alias (.ssh/config)
+
+Edit your `~/.ssh/config` file (create it first if needed)
+
+```ini
+Host portal
+  User      admin
+  Port      2222       # portal port
+  HostName  127.0.0.1  # portal hostname
+```
+
+```bash
+# you can now run a shell using this:
+ssh portal
+# instead of this:
+ssh localhost -p 2222 -l admin
+
+# or connect to hosts using this:
+ssh hostname@portal
+# instead of this:
+ssh localhost -p 2222 -l hostname
+```
+
+---
+
 ## Scaling
 
 `sshportal` is stateless but relies on a database to store configuration and logs.
@@ -385,10 +448,12 @@ By default, `sshportal` uses a local [sqlite](https://www.sqlite.org/) database
 
 You can run multiple instances of `sshportal` sharing a same [MySQL](https://www.mysql.com) database, using `sshportal --db-conn=user:pass@host/dbname?parseTime=true --db-driver=mysql`.
 
-![sshportal cluster with MySQL backend](https://raw.github.com/moul/sshportal/master/.assets/cluster-mysql.svg?sanitize=true)
+![sshportal cluster with MySQL backend](https://raw.github.com/moul/sshportal/master/.assets/cluster-mysql.png)
 
 See [examples/mysql](http://github.com/moul/sshportal/tree/master/examples/mysql).
 
+---
+
 ## Under the hood
 
 * Docker first (used in dev, tests, by the CI and in production)
@@ -406,12 +471,58 @@ See [examples/mysql](http://github.com/moul/sshportal/tree/master/examples/mysql
     * https://github.com/mgutz/ansi: Terminal color helpers
     * https://github.com/urfave/cli: CLI flag parsing with subcommands support
 
-![sshportal data model](https://raw.github.com/moul/sshportal/master/.assets/sql-schema.svg?sanitize=true)
+![sshportal data model](https://raw.github.com/moul/sshportal/master/.assets/sql-schema.png)
 
-## Note
+---
 
-This is totally experimental for now, so please file issues to let me know what you think about it!
+## Testing
 
+[Install golangci-lint](https://golangci-lint.run/usage/install/#local-installation) and run this in project root: 
+```
+golangci-lint run
+```
+---
+Perform integration tests
+```
+make integration
+```
+---
+Perform unit tests
+```
+make unittest
+```
+---
 
-## License
-[![FOSSA Status](https://app.fossa.io/api/projects/git%2Bgithub.com%2Fmoul%2Fsshportal.svg?type=large)](https://app.fossa.io/projects/git%2Bgithub.com%2Fmoul%2Fsshportal?ref=badge_large)
+## Contributors
+
+### Code Contributors
+
+This project exists thanks to all the people who contribute. [[Contribute](CONTRIBUTING.md)].
+<a href="https://github.com/moul/sshportal/graphs/contributors"><img src="https://opencollective.com/sshportal/contributors.svg?width=890&button=false" /></a>
+
+### Financial Contributors
+
+Become a financial contributor and help us sustain our community. [[Contribute](https://opencollective.com/sshportal/contribute)]
+
+#### Individuals
+
+<a href="https://opencollective.com/sshportal"><img src="https://opencollective.com/sshportal/individuals.svg?width=890"></a>
+
+#### Organizations
+
+Support this project with your organization. Your logo will show up here with a link to your website. [[Contribute](https://opencollective.com/sshportal/contribute)]
+
+<a href="https://opencollective.com/sshportal/organization/0/website"><img src="https://opencollective.com/sshportal/organization/0/avatar.svg"></a>
+<a href="https://opencollective.com/sshportal/organization/1/website"><img src="https://opencollective.com/sshportal/organization/1/avatar.svg"></a>
+<a href="https://opencollective.com/sshportal/organization/2/website"><img src="https://opencollective.com/sshportal/organization/2/avatar.svg"></a>
+<a href="https://opencollective.com/sshportal/organization/3/website"><img src="https://opencollective.com/sshportal/organization/3/avatar.svg"></a>
+<a href="https://opencollective.com/sshportal/organization/4/website"><img src="https://opencollective.com/sshportal/organization/4/avatar.svg"></a>
+<a href="https://opencollective.com/sshportal/organization/5/website"><img src="https://opencollective.com/sshportal/organization/5/avatar.svg"></a>
+<a href="https://opencollective.com/sshportal/organization/6/website"><img src="https://opencollective.com/sshportal/organization/6/avatar.svg"></a>
+<a href="https://opencollective.com/sshportal/organization/7/website"><img src="https://opencollective.com/sshportal/organization/7/avatar.svg"></a>
+<a href="https://opencollective.com/sshportal/organization/8/website"><img src="https://opencollective.com/sshportal/organization/8/avatar.svg"></a>
+<a href="https://opencollective.com/sshportal/organization/9/website"><img src="https://opencollective.com/sshportal/organization/9/avatar.svg"></a>
+
+### Stargazers over time
+
+[![Stargazers over time](https://starchart.cc/moul/sshportal.svg)](https://starchart.cc/moul/sshportal)

_config.yml

@@ -0,0 +1 @@
+theme: jekyll-theme-slate

acl.go

@@ -1,40 +0,0 @@
-package main
-
-import "sort"
-
-type ByWeight []*ACL
-
-func (a ByWeight) Len() int           { return len(a) }
-func (a ByWeight) Swap(i, j int)      { a[i], a[j] = a[j], a[i] }
-func (a ByWeight) Less(i, j int) bool { return a[i].Weight < a[j].Weight }
-
-func CheckACLs(user User, host Host) (string, error) {
-	// shared ACLs between user and host
-	aclMap := map[uint]*ACL{}
-	for _, userGroup := range user.Groups {
-		for _, userGroupACL := range userGroup.ACLs {
-			for _, hostGroup := range host.Groups {
-				for _, hostGroupACL := range hostGroup.ACLs {
-					if userGroupACL.ID == hostGroupACL.ID {
-						aclMap[userGroupACL.ID] = userGroupACL
-					}
-				}
-			}
-		}
-	}
-	// FIXME: add ACLs that match host pattern
-
-	// deny by default if no shared ACL
-	if len(aclMap) == 0 {
-		return string(ACLActionDeny), nil // default action
-	}
-
-	// transform map to slice and sort it
-	acls := make([]*ACL, 0, len(aclMap))
-	for _, acl := range aclMap {
-		acls = append(acls, acl)
-	}
-	sort.Sort(ByWeight(acls))
-
-	return acls[0].Action, nil
-}

acl_test.go

@@ -1,47 +0,0 @@
-package main
-
-import (
-	"io/ioutil"
-	"os"
-	"path/filepath"
-	"testing"
-
-	"github.com/jinzhu/gorm"
-	. "github.com/smartystreets/goconvey/convey"
-)
-
-func TestCheckACLs(t *testing.T) {
-	Convey("Testing CheckACLs", t, func() {
-		// create tmp dir
-		tempDir, err := ioutil.TempDir("", "sshportal")
-		So(err, ShouldBeNil)
-		defer func() {
-			So(os.RemoveAll(tempDir), ShouldBeNil)
-		}()
-
-		// create sqlite db
-		db, err := gorm.Open("sqlite3", filepath.Join(tempDir, "sshportal.db"))
-		So(err, ShouldBeNil)
-		db.LogMode(false)
-		So(dbInit(db), ShouldBeNil)
-
-		// create dummy objects
-		var hostGroup HostGroup
-		err = HostGroupsByIdentifiers(db, []string{"default"}).First(&hostGroup).Error
-		So(err, ShouldBeNil)
-		db.Create(&Host{Groups: []*HostGroup{&hostGroup}})
-
-		//. load db
-		var (
-			hosts []Host
-			users []User
-		)
-		db.Preload("Groups").Preload("Groups.ACLs").Find(&hosts)
-		db.Preload("Groups").Preload("Groups.ACLs").Find(&users)
-
-		// test
-		action, err := CheckACLs(users[0], hosts[0])
-		So(err, ShouldBeNil)
-		So(action, ShouldEqual, ACLActionAllow)
-	})
-}

config.go

@@ -1,52 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"os"
-	"time"
-
-	"github.com/urfave/cli"
-)
-
-type configServe struct {
-	aesKey          string
-	dbDriver, dbURL string
-	logsLocation    string
-	bindAddr        string
-	debug, demo     bool
-	idleTimeout     time.Duration
-}
-
-func parseServeConfig(c *cli.Context) (*configServe, error) {
-	ret := &configServe{
-		aesKey:       c.String("aes-key"),
-		dbDriver:     c.String("db-driver"),
-		dbURL:        c.String("db-conn"),
-		bindAddr:     c.String("bind-address"),
-		debug:        c.Bool("debug"),
-		demo:         c.Bool("demo"),
-		logsLocation: c.String("logs-location"),
-		idleTimeout:  c.Duration("idle-timeout"),
-	}
-	switch len(ret.aesKey) {
-	case 0, 16, 24, 32:
-	default:
-		return nil, fmt.Errorf("invalid aes key size, should be 16 or 24, 32")
-	}
-	return ret, nil
-}
-
-func ensureLogDirectory(location string) error {
-	// check for the logdir existence
-	logsLocation, err := os.Stat(location)
-	if err != nil {
-		if os.IsNotExist(err) {
-			return os.MkdirAll(location, os.ModeDir|os.FileMode(0750))
-		}
-		return err
-	}
-	if !logsLocation.IsDir() {
-		return fmt.Errorf("log directory cannot be created")
-	}
-	return nil
-}

dbinit.go

@@ -1,645 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"io/ioutil"
-	"log"
-	"os"
-	"os/user"
-	"strings"
-	"time"
-
-	"github.com/go-gormigrate/gormigrate"
-	"github.com/jinzhu/gorm"
-	gossh "golang.org/x/crypto/ssh"
-)
-
-func dbInit(db *gorm.DB) error {
-	log.SetOutput(ioutil.Discard)
-	db.Callback().Delete().Replace("gorm:delete", hardDeleteCallback)
-	log.SetOutput(os.Stderr)
-
-	m := gormigrate.New(db, gormigrate.DefaultOptions, []*gormigrate.Migration{
-		{
-			ID: "1",
-			Migrate: func(tx *gorm.DB) error {
-				type Setting struct {
-					gorm.Model
-					Name  string
-					Value string
-				}
-				return tx.AutoMigrate(&Setting{}).Error
-			},
-			Rollback: func(tx *gorm.DB) error {
-				return tx.DropTable("settings").Error
-			},
-		}, {
-			ID: "2",
-			Migrate: func(tx *gorm.DB) error {
-				type SSHKey struct {
-					// FIXME: use uuid for ID
-					gorm.Model
-					Name        string
-					Type        string
-					Length      uint
-					Fingerprint string
-					PrivKey     string  `sql:"size:10000"`
-					PubKey      string  `sql:"size:10000"`
-					Hosts       []*Host `gorm:"ForeignKey:SSHKeyID"`
-					Comment     string
-				}
-				return tx.AutoMigrate(&SSHKey{}).Error
-			},
-			Rollback: func(tx *gorm.DB) error {
-				return tx.DropTable("ssh_keys").Error
-			},
-		}, {
-			ID: "3",
-			Migrate: func(tx *gorm.DB) error {
-				type Host struct {
-					// FIXME: use uuid for ID
-					gorm.Model
-					Name        string `gorm:"size:32"`
-					Addr        string
-					User        string
-					Password    string
-					SSHKey      *SSHKey      `gorm:"ForeignKey:SSHKeyID"`
-					SSHKeyID    uint         `gorm:"index"`
-					Groups      []*HostGroup `gorm:"many2many:host_host_groups;"`
-					Fingerprint string
-					Comment     string
-				}
-				return tx.AutoMigrate(&Host{}).Error
-			},
-			Rollback: func(tx *gorm.DB) error {
-				return tx.DropTable("hosts").Error
-			},
-		}, {
-			ID: "4",
-			Migrate: func(tx *gorm.DB) error {
-				type UserKey struct {
-					gorm.Model
-					Key     []byte `sql:"size:10000"`
-					UserID  uint   ``
-					User    *User  `gorm:"ForeignKey:UserID"`
-					Comment string
-				}
-				return tx.AutoMigrate(&UserKey{}).Error
-			},
-			Rollback: func(tx *gorm.DB) error {
-				return tx.DropTable("user_keys").Error
-			},
-		}, {
-			ID: "5",
-			Migrate: func(tx *gorm.DB) error {
-				type User struct {
-					// FIXME: use uuid for ID
-					gorm.Model
-					IsAdmin     bool
-					Email       string
-					Name        string
-					Keys        []*UserKey   `gorm:"ForeignKey:UserID"`
-					Groups      []*UserGroup `gorm:"many2many:user_user_groups;"`
-					Comment     string
-					InviteToken string
-				}
-				return tx.AutoMigrate(&User{}).Error
-			},
-			Rollback: func(tx *gorm.DB) error {
-				return tx.DropTable("users").Error
-			},
-		}, {
-			ID: "6",
-			Migrate: func(tx *gorm.DB) error {
-				type UserGroup struct {
-					gorm.Model
-					Name    string
-					Users   []*User `gorm:"many2many:user_user_groups;"`
-					ACLs    []*ACL  `gorm:"many2many:user_group_acls;"`
-					Comment string
-				}
-				return tx.AutoMigrate(&UserGroup{}).Error
-			},
-			Rollback: func(tx *gorm.DB) error {
-				return tx.DropTable("user_groups").Error
-			},
-		}, {
-			ID: "7",
-			Migrate: func(tx *gorm.DB) error {
-				type HostGroup struct {
-					gorm.Model
-					Name    string
-					Hosts   []*Host `gorm:"many2many:host_host_groups;"`
-					ACLs    []*ACL  `gorm:"many2many:host_group_acls;"`
-					Comment string
-				}
-				return tx.AutoMigrate(&HostGroup{}).Error
-			},
-			Rollback: func(tx *gorm.DB) error {
-				return tx.DropTable("host_groups").Error
-			},
-		}, {
-			ID: "8",
-			Migrate: func(tx *gorm.DB) error {
-				type ACL struct {
-					gorm.Model
-					HostGroups  []*HostGroup `gorm:"many2many:host_group_acls;"`
-					UserGroups  []*UserGroup `gorm:"many2many:user_group_acls;"`
-					HostPattern string
-					Action      string
-					Weight      uint
-					Comment     string
-				}
-
-				return tx.AutoMigrate(&ACL{}).Error
-			},
-			Rollback: func(tx *gorm.DB) error {
-				return tx.DropTable("acls").Error
-			},
-		}, {
-			ID: "9",
-			Migrate: func(tx *gorm.DB) error {
-				db.Model(&Setting{}).RemoveIndex("uix_settings_name")
-				return db.Model(&Setting{}).AddUniqueIndex("uix_settings_name", "name").Error
-			},
-			Rollback: func(tx *gorm.DB) error {
-				return db.Model(&Setting{}).RemoveIndex("uix_settings_name").Error
-			},
-		}, {
-			ID: "10",
-			Migrate: func(tx *gorm.DB) error {
-				db.Model(&SSHKey{}).RemoveIndex("uix_keys_name")
-				return db.Model(&SSHKey{}).AddUniqueIndex("uix_keys_name", "name").Error
-			},
-			Rollback: func(tx *gorm.DB) error {
-				return db.Model(&SSHKey{}).RemoveIndex("uix_keys_name").Error
-			},
-		}, {
-			ID: "11",
-			Migrate: func(tx *gorm.DB) error {
-				db.Model(&Host{}).RemoveIndex("uix_hosts_name")
-				return db.Model(&Host{}).AddUniqueIndex("uix_hosts_name", "name").Error
-			},
-			Rollback: func(tx *gorm.DB) error {
-				return db.Model(&Host{}).RemoveIndex("uix_hosts_name").Error
-			},
-		}, {
-			ID: "12",
-			Migrate: func(tx *gorm.DB) error {
-				db.Model(&User{}).RemoveIndex("uix_users_name")
-				return db.Model(&User{}).AddUniqueIndex("uix_users_name", "name").Error
-			},
-			Rollback: func(tx *gorm.DB) error {
-				return db.Model(&User{}).RemoveIndex("uix_users_name").Error
-			},
-		}, {
-			ID: "13",
-			Migrate: func(tx *gorm.DB) error {
-				db.Model(&UserGroup{}).RemoveIndex("uix_usergroups_name")
-				return db.Model(&UserGroup{}).AddUniqueIndex("uix_usergroups_name", "name").Error
-			},
-			Rollback: func(tx *gorm.DB) error {
-				return db.Model(&UserGroup{}).RemoveIndex("uix_usergroups_name").Error
-			},
-		}, {
-			ID: "14",
-			Migrate: func(tx *gorm.DB) error {
-				db.Model(&HostGroup{}).RemoveIndex("uix_hostgroups_name")
-				return db.Model(&HostGroup{}).AddUniqueIndex("uix_hostgroups_name", "name").Error
-			},
-			Rollback: func(tx *gorm.DB) error {
-				return db.Model(&HostGroup{}).RemoveIndex("uix_hostgroups_name").Error
-			},
-		}, {
-			ID: "15",
-			Migrate: func(tx *gorm.DB) error {
-				type UserRole struct {
-					gorm.Model
-					Name  string  `valid:"required,length(1|32),unix_user"`
-					Users []*User `gorm:"many2many:user_user_roles"`
-				}
-				return tx.AutoMigrate(&UserRole{}).Error
-			},
-			Rollback: func(tx *gorm.DB) error {
-				return tx.DropTable("user_roles").Error
-			},
-		}, {
-			ID: "16",
-			Migrate: func(tx *gorm.DB) error {
-				type User struct {
-					gorm.Model
-					IsAdmin     bool
-					Roles       []*UserRole  `gorm:"many2many:user_user_roles"`
-					Email       string       `valid:"required,email"`
-					Name        string       `valid:"required,length(1|32),unix_user"`
-					Keys        []*UserKey   `gorm:"ForeignKey:UserID"`
-					Groups      []*UserGroup `gorm:"many2many:user_user_groups;"`
-					Comment     string       `valid:"optional"`
-					InviteToken string       `valid:"optional,length(10|60)"`
-				}
-				return tx.AutoMigrate(&User{}).Error
-			},
-			Rollback: func(tx *gorm.DB) error {
-				return fmt.Errorf("not implemented")
-			},
-		}, {
-			ID: "17",
-			Migrate: func(tx *gorm.DB) error {
-				return tx.Create(&UserRole{Name: "admin"}).Error
-			},
-			Rollback: func(tx *gorm.DB) error {
-				return tx.Where("name = ?", "admin").Delete(&UserRole{}).Error
-			},
-		}, {
-			ID: "18",
-			Migrate: func(tx *gorm.DB) error {
-				var adminRole UserRole
-				if err := db.Where("name = ?", "admin").First(&adminRole).Error; err != nil {
-					return err
-				}
-
-				var users []User
-				if err := db.Preload("Roles").Where("is_admin = ?", true).Find(&users).Error; err != nil {
-					return err
-				}
-
-				for _, user := range users {
-					user.Roles = append(user.Roles, &adminRole)
-					if err := tx.Save(&user).Error; err != nil {
-						return err
-					}
-				}
-				return nil
-			},
-			Rollback: func(tx *gorm.DB) error {
-				return fmt.Errorf("not implemented")
-			},
-		}, {
-			ID: "19",
-			Migrate: func(tx *gorm.DB) error {
-				type User struct {
-					gorm.Model
-					Roles       []*UserRole  `gorm:"many2many:user_user_roles"`
-					Email       string       `valid:"required,email"`
-					Name        string       `valid:"required,length(1|32),unix_user"`
-					Keys        []*UserKey   `gorm:"ForeignKey:UserID"`
-					Groups      []*UserGroup `gorm:"many2many:user_user_groups;"`
-					Comment     string       `valid:"optional"`
-					InviteToken string       `valid:"optional,length(10|60)"`
-				}
-				return tx.AutoMigrate(&User{}).Error
-			},
-			Rollback: func(tx *gorm.DB) error {
-				return fmt.Errorf("not implemented")
-			},
-		}, {
-			ID: "20",
-			Migrate: func(tx *gorm.DB) error {
-				return tx.Create(&UserRole{Name: "listhosts"}).Error
-			},
-			Rollback: func(tx *gorm.DB) error {
-				return tx.Where("name = ?", "listhosts").Delete(&UserRole{}).Error
-			},
-		}, {
-			ID: "21",
-			Migrate: func(tx *gorm.DB) error {
-				type Session struct {
-					gorm.Model
-					StoppedAt time.Time `valid:"optional"`
-					Status    string    `valid:"required"`
-					User      *User     `gorm:"ForeignKey:UserID"`
-					Host      *Host     `gorm:"ForeignKey:HostID"`
-					UserID    uint      `valid:"optional"`
-					HostID    uint      `valid:"optional"`
-					ErrMsg    string    `valid:"optional"`
-					Comment   string    `valid:"optional"`
-				}
-				return tx.AutoMigrate(&Session{}).Error
-			},
-			Rollback: func(tx *gorm.DB) error {
-				return tx.DropTable("sessions").Error
-			},
-		}, {
-			ID: "22",
-			Migrate: func(tx *gorm.DB) error {
-				type Event struct {
-					gorm.Model
-					Author   *User  `gorm:"ForeignKey:AuthorID"`
-					AuthorID uint   `valid:"optional"`
-					Domain   string `valid:"required"`
-					Action   string `valid:"required"`
-					Entity   string `valid:"optional"`
-					Args     []byte `sql:"size:10000" valid:"optional,length(1|10000)"`
-				}
-				return tx.AutoMigrate(&Event{}).Error
-			},
-			Rollback: func(tx *gorm.DB) error {
-				return tx.DropTable("events").Error
-			},
-		}, {
-			ID: "23",
-			Migrate: func(tx *gorm.DB) error {
-				type UserKey struct {
-					gorm.Model
-					Key           []byte `sql:"size:10000" valid:"required,length(1|10000)"`
-					AuthorizedKey string `sql:"size:10000" valid:"required,length(1|10000)"`
-					UserID        uint   ``
-					User          *User  `gorm:"ForeignKey:UserID"`
-					Comment       string `valid:"optional"`
-				}
-				return tx.AutoMigrate(&UserKey{}).Error
-			},
-			Rollback: func(tx *gorm.DB) error {
-				return fmt.Errorf("not implemented")
-			},
-		}, {
-			ID: "24",
-			Migrate: func(tx *gorm.DB) error {
-				var userKeys []UserKey
-				if err := db.Find(&userKeys).Error; err != nil {
-					return err
-				}
-
-				for _, userKey := range userKeys {
-					key, err := gossh.ParsePublicKey(userKey.Key)
-					if err != nil {
-						return err
-					}
-					userKey.AuthorizedKey = string(gossh.MarshalAuthorizedKey(key))
-					if err := db.Model(&userKey).Updates(&userKey).Error; err != nil {
-						return err
-					}
-				}
-				return nil
-			},
-			Rollback: func(tx *gorm.DB) error {
-				return fmt.Errorf("not implemented")
-			},
-		}, {
-			ID: "25",
-			Migrate: func(tx *gorm.DB) error {
-				type Host struct {
-					// FIXME: use uuid for ID
-					gorm.Model
-					Name        string       `gorm:"size:32" valid:"required,length(1|32),unix_user"`
-					Addr        string       `valid:"required"`
-					User        string       `valid:"optional"`
-					Password    string       `valid:"optional"`
-					SSHKey      *SSHKey      `gorm:"ForeignKey:SSHKeyID"` // SSHKey used to connect by the client
-					SSHKeyID    uint         `gorm:"index"`
-					HostKey     []byte       `sql:"size:10000" valid:"optional"`
-					Groups      []*HostGroup `gorm:"many2many:host_host_groups;"`
-					Fingerprint string       `valid:"optional"` // FIXME: replace with hostKey ?
-					Comment     string       `valid:"optional"`
-				}
-				return tx.AutoMigrate(&Host{}).Error
-			},
-			Rollback: func(tx *gorm.DB) error {
-				return fmt.Errorf("not implemented")
-			},
-		}, {
-			ID: "26",
-			Migrate: func(tx *gorm.DB) error {
-				type Session struct {
-					gorm.Model
-					StoppedAt *time.Time `sql:"index" valid:"optional"`
-					Status    string     `valid:"required"`
-					User      *User      `gorm:"ForeignKey:UserID"`
-					Host      *Host      `gorm:"ForeignKey:HostID"`
-					UserID    uint       `valid:"optional"`
-					HostID    uint       `valid:"optional"`
-					ErrMsg    string     `valid:"optional"`
-					Comment   string     `valid:"optional"`
-				}
-				return tx.AutoMigrate(&Session{}).Error
-			},
-			Rollback: func(tx *gorm.DB) error {
-				return fmt.Errorf("not implemented")
-			},
-		}, {
-			ID: "27",
-			Migrate: func(tx *gorm.DB) error {
-				var sessions []Session
-				if err := db.Find(&sessions).Error; err != nil {
-					return err
-				}
-
-				for _, session := range sessions {
-					if session.StoppedAt != nil && session.StoppedAt.IsZero() {
-						if err := db.Model(&session).Updates(map[string]interface{}{"stopped_at": nil}).Error; err != nil {
-							return err
-						}
-					}
-				}
-				return nil
-			},
-			Rollback: func(tx *gorm.DB) error {
-				return fmt.Errorf("not implemented")
-			},
-		}, {
-			ID: "28",
-			Migrate: func(tx *gorm.DB) error {
-				type Host struct {
-					// FIXME: use uuid for ID
-					gorm.Model
-					Name     string `gorm:"size:32"`
-					Addr     string
-					User     string
-					Password string
-					URL      string
-					SSHKey   *SSHKey      `gorm:"ForeignKey:SSHKeyID"`
-					SSHKeyID uint         `gorm:"index"`
-					HostKey  []byte       `sql:"size:10000"`
-					Groups   []*HostGroup `gorm:"many2many:host_host_groups;"`
-					Comment  string
-				}
-				return tx.AutoMigrate(&Host{}).Error
-			},
-			Rollback: func(tx *gorm.DB) error {
-				return fmt.Errorf("not implemented")
-			},
-		}, {
-			ID: "29",
-			Migrate: func(tx *gorm.DB) error {
-				type Host struct {
-					// FIXME: use uuid for ID
-					gorm.Model
-					Name     string `gorm:"size:32"`
-					Addr     string
-					User     string
-					Password string
-					URL      string
-					SSHKey   *SSHKey      `gorm:"ForeignKey:SSHKeyID"`
-					SSHKeyID uint         `gorm:"index"`
-					HostKey  []byte       `sql:"size:10000"`
-					Groups   []*HostGroup `gorm:"many2many:host_host_groups;"`
-					Comment  string
-					Hop      *Host
-					HopID    uint
-				}
-				return tx.AutoMigrate(&Host{}).Error
-			},
-			Rollback: func(tx *gorm.DB) error {
-				return fmt.Errorf("not implemented")
-			},
-		},
-	})
-	if err := m.Migrate(); err != nil {
-		return err
-	}
-	NewEvent("system", "migrated").Log(db)
-
-	// create default ssh key
-	var count uint
-	if err := db.Table("ssh_keys").Where("name = ?", "default").Count(&count).Error; err != nil {
-		return err
-	}
-	if count == 0 {
-		key, err := NewSSHKey("rsa", 2048)
-		if err != nil {
-			return err
-		}
-		key.Name = "default"
-		key.Comment = "created by sshportal"
-		if err := db.Create(&key).Error; err != nil {
-			return err
-		}
-	}
-
-	// create default host group
-	if err := db.Table("host_groups").Where("name = ?", "default").Count(&count).Error; err != nil {
-		return err
-	}
-	if count == 0 {
-		hostGroup := HostGroup{
-			Name:    "default",
-			Comment: "created by sshportal",
-		}
-		if err := db.Create(&hostGroup).Error; err != nil {
-			return err
-		}
-	}
-
-	// create default user group
-	if err := db.Table("user_groups").Where("name = ?", "default").Count(&count).Error; err != nil {
-		return err
-	}
-	if count == 0 {
-		userGroup := UserGroup{
-			Name:    "default",
-			Comment: "created by sshportal",
-		}
-		if err := db.Create(&userGroup).Error; err != nil {
-			return err
-		}
-	}
-
-	// create default acl
-	if err := db.Table("acls").Count(&count).Error; err != nil {
-		return err
-	}
-	if count == 0 {
-		var defaultUserGroup UserGroup
-		db.Where("name = ?", "default").First(&defaultUserGroup)
-		var defaultHostGroup HostGroup
-		db.Where("name = ?", "default").First(&defaultHostGroup)
-		acl := ACL{
-			UserGroups: []*UserGroup{&defaultUserGroup},
-			HostGroups: []*HostGroup{&defaultHostGroup},
-			Action:     "allow",
-			//HostPattern: "",
-			//Weight:      0,
-			Comment: "created by sshportal",
-		}
-		if err := db.Create(&acl).Error; err != nil {
-			return err
-		}
-	}
-
-	// create admin user
-	var defaultUserGroup UserGroup
-	db.Where("name = ?", "default").First(&defaultUserGroup)
-	if err := db.Table("users").Count(&count).Error; err != nil {
-		return err
-	}
-	if count == 0 {
-		// if no admin, create an account for the first connection
-		inviteToken := randStringBytes(16)
-		if os.Getenv("SSHPORTAL_DEFAULT_ADMIN_INVITE_TOKEN") != "" {
-			inviteToken = os.Getenv("SSHPORTAL_DEFAULT_ADMIN_INVITE_TOKEN")
-		}
-		var adminRole UserRole
-		if err := db.Where("name = ?", "admin").First(&adminRole).Error; err != nil {
-			return err
-		}
-		var username string
-		if currentUser, err := user.Current(); err == nil {
-			username = currentUser.Username
-		}
-		if username == "" {
-			username = os.Getenv("USER")
-		}
-		username = strings.ToLower(username)
-		if username == "" {
-			username = "admin" // fallback username
-		}
-		user := User{
-			Name:        username,
-			Email:       fmt.Sprintf("%s@localhost", username),
-			Comment:     "created by sshportal",
-			Roles:       []*UserRole{&adminRole},
-			InviteToken: inviteToken,
-			Groups:      []*UserGroup{&defaultUserGroup},
-		}
-		if err := db.Create(&user).Error; err != nil {
-			return err
-		}
-		log.Printf("info 'admin' user created, use the user 'invite:%s' to associate a public key with this account", user.InviteToken)
-	}
-
-	// create host ssh key
-	if err := db.Table("ssh_keys").Where("name = ?", "host").Count(&count).Error; err != nil {
-		return err
-	}
-	if count == 0 {
-		key, err := NewSSHKey("rsa", 2048)
-		if err != nil {
-			return err
-		}
-		key.Name = "host"
-		key.Comment = "created by sshportal"
-		if err := db.Create(&key).Error; err != nil {
-			return err
-		}
-	}
-
-	// close unclosed connections
-	return db.Table("sessions").Where("status = ?", "active").Updates(&Session{
-		Status: string(SessionStatusClosed),
-		ErrMsg: "sshportal was halted while the connection was still active",
-	}).Error
-}
-
-func hardDeleteCallback(scope *gorm.Scope) {
-	if !scope.HasError() {
-		var extraOption string
-		if str, ok := scope.Get("gorm:delete_option"); ok {
-			extraOption = fmt.Sprint(str)
-		}
-
-		/* #nosec */
-		scope.Raw(fmt.Sprintf(
-			"DELETE FROM %v%v%v",
-			scope.QuotedTableName(),
-			addExtraSpaceIfExist(scope.CombinedConditionSql()),
-			addExtraSpaceIfExist(extraOption),
-		)).Exec()
-	}
-}
-
-func addExtraSpaceIfExist(str string) string {
-	if str != "" {
-		return " " + str
-	}
-	return ""
-}

depaware.txt

@@ -0,0 +1,128 @@
+moul.io/sshportal dependencies: (generated by github.com/tailscale/depaware)
+
+        github.com/anmitsu/go-shlex                                  from github.com/gliderlabs/ssh+
+        github.com/asaskevich/govalidator                            from moul.io/sshportal/pkg/bastion+
+        github.com/cpuguy83/go-md2man/v2/md2man                      from github.com/urfave/cli
+  LD 💣 github.com/creack/pty                                        from github.com/kr/pty
+        github.com/docker/docker/pkg/namesgenerator                  from moul.io/sshportal/pkg/bastion
+        github.com/docker/docker/pkg/random                          from github.com/docker/docker/pkg/namesgenerator
+        github.com/dustin/go-humanize                                from moul.io/sshportal/pkg/bastion
+        github.com/gliderlabs/ssh                                    from moul.io/sshportal+
+        github.com/go-sql-driver/mysql                               from github.com/jinzhu/gorm/dialects/mysql+
+        github.com/jinzhu/gorm                                       from gopkg.in/gormigrate.v1+
+        github.com/jinzhu/gorm/dialects/mysql                        from moul.io/sshportal
+        github.com/jinzhu/gorm/dialects/postgres                     from moul.io/sshportal
+        github.com/jinzhu/gorm/dialects/sqlite                       from moul.io/sshportal
+        github.com/jinzhu/inflection                                 from github.com/jinzhu/gorm
+  LD    github.com/kr/pty                                            from moul.io/sshportal
+        github.com/lib/pq                                            from github.com/jinzhu/gorm/dialects/postgres
+        github.com/lib/pq/hstore                                     from github.com/jinzhu/gorm/dialects/postgres
+        github.com/lib/pq/oid                                        from github.com/lib/pq
+        github.com/lib/pq/scram                                      from github.com/lib/pq
+     💣 github.com/mattn/go-colorable                                from github.com/mgutz/ansi
+     💣 github.com/mattn/go-isatty                                   from github.com/mattn/go-colorable
+        github.com/mattn/go-runewidth                                from github.com/olekukonko/tablewriter
+     💣 github.com/mattn/go-sqlite3                                  from github.com/jinzhu/gorm/dialects/sqlite
+        github.com/mgutz/ansi                                        from moul.io/sshportal/pkg/bastion
+        github.com/olekukonko/tablewriter                            from moul.io/sshportal/pkg/bastion
+        github.com/pkg/errors                                        from moul.io/sshportal/pkg/bastion
+        github.com/reiver/go-oi                                      from github.com/reiver/go-telnet+
+        github.com/reiver/go-telnet                                  from moul.io/sshportal/pkg/bastion
+        github.com/russross/blackfriday/v2                           from github.com/cpuguy83/go-md2man/v2/md2man
+        github.com/sabban/bastion/pkg/logchannel                     from moul.io/sshportal/pkg/bastion
+        github.com/shurcooL/sanitized_anchor_name                    from github.com/russross/blackfriday/v2
+        github.com/urfave/cli                                        from moul.io/sshportal+
+        gopkg.in/gormigrate.v1                                       from moul.io/sshportal/pkg/bastion
+        moul.io/srand                                                from moul.io/sshportal
+        moul.io/sshportal/pkg/bastion                                from moul.io/sshportal
+        moul.io/sshportal/pkg/crypto                                 from moul.io/sshportal/pkg/bastion
+        moul.io/sshportal/pkg/dbmodels                               from moul.io/sshportal/pkg/bastion+
+        golang.org/x/crypto/blowfish                                 from golang.org/x/crypto/ssh/internal/bcrypt_pbkdf
+        golang.org/x/crypto/chacha20                                 from golang.org/x/crypto/chacha20poly1305+
+        golang.org/x/crypto/chacha20poly1305                         from crypto/tls
+        golang.org/x/crypto/cryptobyte                               from crypto/ecdsa+
+        golang.org/x/crypto/cryptobyte/asn1                          from crypto/ecdsa+
+        golang.org/x/crypto/curve25519                               from crypto/tls+
+        golang.org/x/crypto/ed25519                                  from golang.org/x/crypto/ssh
+        golang.org/x/crypto/hkdf                                     from crypto/tls
+        golang.org/x/crypto/poly1305                                 from golang.org/x/crypto/chacha20poly1305+
+        golang.org/x/crypto/ssh                                      from github.com/gliderlabs/ssh+
+        golang.org/x/crypto/ssh/terminal                             from moul.io/sshportal/pkg/bastion
+        golang.org/x/net/dns/dnsmessage                              from net
+   D    golang.org/x/net/route                                       from net
+        golang.org/x/sys/cpu                                         from golang.org/x/crypto/chacha20poly1305
+  LD    golang.org/x/sys/unix                                        from github.com/mattn/go-isatty+
+   W    golang.org/x/sys/windows                                     from golang.org/x/crypto/ssh/terminal
+        bufio                                                        from crypto/rand+
+        bytes                                                        from bufio+
+        container/list                                               from crypto/tls
+        context                                                      from crypto/tls+
+        crypto                                                       from crypto/ecdsa+
+        crypto/aes                                                   from crypto/ecdsa+
+        crypto/cipher                                                from crypto/aes+
+        crypto/des                                                   from crypto/tls+
+        crypto/dsa                                                   from crypto/x509+
+        crypto/ecdsa                                                 from crypto/tls+
+        crypto/ed25519                                               from crypto/tls+
+        crypto/elliptic                                              from crypto/ecdsa+
+        crypto/hmac                                                  from crypto/tls+
+        crypto/md5                                                   from crypto/tls+
+        crypto/rand                                                  from crypto/ed25519+
+        crypto/rc4                                                   from crypto/tls+
+        crypto/rsa                                                   from crypto/tls+
+        crypto/sha1                                                  from crypto/tls+
+        crypto/sha256                                                from crypto/tls+
+        crypto/sha512                                                from crypto/ecdsa+
+        crypto/subtle                                                from crypto/aes+
+        crypto/tls                                                   from github.com/go-sql-driver/mysql+
+        crypto/x509                                                  from crypto/tls+
+        crypto/x509/pkix                                             from crypto/x509
+        database/sql                                                 from github.com/go-sql-driver/mysql+
+        database/sql/driver                                          from database/sql+
+        encoding                                                     from encoding/json
+        encoding/asn1                                                from crypto/x509+
+        encoding/base64                                              from encoding/json+
+        encoding/binary                                              from crypto/aes+
+        encoding/csv                                                 from github.com/olekukonko/tablewriter
+        encoding/hex                                                 from crypto/x509+
+        encoding/json                                                from github.com/asaskevich/govalidator+
+        encoding/pem                                                 from crypto/tls+
+        errors                                                       from bufio+
+        flag                                                         from github.com/urfave/cli
+        fmt                                                          from crypto/tls+
+        go/ast                                                       from github.com/jinzhu/gorm
+        go/scanner                                                   from go/ast
+        go/token                                                     from go/ast+
+        hash                                                         from crypto+
+        html                                                         from github.com/asaskevich/govalidator+
+        io                                                           from bufio+
+        io/fs                                                        from crypto/rand+
+        io/ioutil                                                    from crypto/x509+
+        log                                                          from github.com/gliderlabs/ssh+
+        math                                                         from crypto/rsa+
+        math/big                                                     from crypto/dsa+
+        math/bits                                                    from crypto/md5+
+        math/rand                                                    from github.com/docker/docker/pkg/random+
+        net                                                          from crypto/tls+
+        net/url                                                      from crypto/x509+
+        os                                                           from crypto/rand+
+  LD    os/exec                                                      from github.com/creack/pty+
+        os/user                                                      from github.com/lib/pq+
+        path                                                         from github.com/asaskevich/govalidator+
+        path/filepath                                                from crypto/x509+
+        reflect                                                      from crypto/x509+
+        regexp                                                       from github.com/asaskevich/govalidator+
+        regexp/syntax                                                from regexp
+        sort                                                         from database/sql+
+        strconv                                                      from crypto+
+        strings                                                      from bufio+
+        sync                                                         from context+
+        sync/atomic                                                  from context+
+        syscall                                                      from crypto/rand+
+        text/tabwriter                                               from github.com/urfave/cli
+        text/template                                                from github.com/urfave/cli
+        text/template/parse                                          from text/template
+        time                                                         from context+
+        unicode                                                      from bytes+
+        unicode/utf16                                                from encoding/asn1+
+        unicode/utf8                                                 from bufio+

examples/integration/Makefile

@@ -5,3 +5,6 @@ run:
 	docker-compose exec sshportal /bin/sshportal healthcheck --wait --quiet
 	docker-compose run client /integration/_client.sh
 	docker-compose down
+
+build:
+	docker-compose build

examples/integration/_client.sh

@@ -28,7 +28,7 @@ ssh sshportal -l invite:integration
 ssh sshportal -l admin hostgroup create
 ssh sshportal -l admin hostgroup create --name=hg1
 ssh sshportal -l admin hostgroup create --name=hg2 --comment=test
-ssh sshportal -l admin usergroup inspect hg1 hg2
+ssh sshportal -l admin hostgroup inspect hg1 hg2
 ssh sshportal -l admin hostgroup ls
 
 ssh sshportal -l admin usergroup create

go.mod

@@ -1,47 +1,36 @@
 module moul.io/sshportal
 
 require (
-	cloud.google.com/go v0.33.1 // indirect
-	github.com/anmitsu/go-shlex v0.0.0-20161002113705-648efa622239
-	github.com/asaskevich/govalidator v0.0.0-20180720115003-f9ffefc3facf
-	github.com/davecgh/go-spew v1.1.1 // indirect
-	github.com/denisenkom/go-mssqldb v0.0.0-20181014144952-4e0d7dc8888f // indirect
-	github.com/docker/docker v1.13.1 // indirect
+	github.com/anmitsu/go-shlex v0.0.0-20200514113438-38f4b401e2be
+	github.com/asaskevich/govalidator v0.0.0-20210307081110-f21760c49a8d
+	github.com/cpuguy83/go-md2man/v2 v2.0.0 // indirect
+	github.com/creack/pty v1.1.11 // indirect
+	github.com/docker/docker v20.10.12+incompatible
 	github.com/dustin/go-humanize v1.0.0
-	github.com/erikstmartin/go-testdb v0.0.0-20160219214506-8d10e4a1bae5 // indirect
-	github.com/flynn/go-shlex v0.0.0-20150515145356-3f9db97f8568 // indirect
-	github.com/gliderlabs/ssh v0.1.1 // indirect
-	github.com/go-gormigrate/gormigrate v1.2.1
-	github.com/go-sql-driver/mysql v1.4.1 // indirect
-	github.com/google/go-cmp v0.2.0 // indirect
-	github.com/gopherjs/gopherjs v0.0.0-20181103185306-d547d1d9531e // indirect
-	github.com/jinzhu/gorm v1.9.1
-	github.com/jinzhu/inflection v0.0.0-20180308033659-04140366298a // indirect
-	github.com/jinzhu/now v0.0.0-20181116074157-8ec929ed50c3 // indirect
-	github.com/joho/godotenv v1.3.0 // indirect
-	github.com/jtolds/gls v4.2.1+incompatible // indirect
-	github.com/kr/pty v1.1.3
-	github.com/lib/pq v1.0.0 // indirect
-	github.com/mattn/go-colorable v0.0.9 // indirect
-	github.com/mattn/go-isatty v0.0.4 // indirect
-	github.com/mattn/go-runewidth v0.0.3 // indirect
-	github.com/mattn/go-sqlite3 v1.10.0 // indirect
-	github.com/mgutz/ansi v0.0.0-20170206155736-9520e82c474b
-	github.com/moby/moby v1.13.1
-	github.com/moul/ssh v0.1.1-0.20181116135657-8b3cdd49b6d2
-	github.com/olekukonko/tablewriter v0.0.1
-	github.com/pmezard/go-difflib v1.0.0 // indirect
-	github.com/reiver/go-oi v0.0.0-20160325061615-431c83978379
+	github.com/gliderlabs/ssh v0.3.3
+	github.com/go-gormigrate/gormigrate/v2 v2.0.0
+	github.com/kr/pty v1.1.8
+	github.com/mattn/go-colorable v0.1.8 // indirect
+	github.com/mattn/go-runewidth v0.0.12 // indirect
+	github.com/mgutz/ansi v0.0.0-20200706080929-d51e80ef957d
+	github.com/olekukonko/tablewriter v0.0.5
+	github.com/pkg/errors v0.9.1
+	github.com/reiver/go-oi v1.0.0
 	github.com/reiver/go-telnet v0.0.0-20180421082511-9ff0b2ab096e
+	github.com/rivo/uniseg v0.2.0 // indirect
+	github.com/russross/blackfriday/v2 v2.1.0 // indirect
 	github.com/sabban/bastion v0.0.0-20180110125408-b9d3c9b1f4d3
-	github.com/smartystreets/assertions v0.0.0-20180927180507-b2de0cb4f26d // indirect
-	github.com/smartystreets/goconvey v0.0.0-20181108003508-044398e4856c
-	github.com/spf13/cobra v0.0.3 // indirect
-	github.com/spf13/pflag v1.0.3 // indirect
-	github.com/urfave/cli v1.20.0
-	golang.org/x/crypto v0.0.0-20181112202954-3d3f9f413869
-	golang.org/x/net v0.0.0-20181114220301-adae6a3d119a // indirect
-	golang.org/x/sys v0.0.0-20181122145206-62eef0e2fa9b // indirect
-	google.golang.org/appengine v1.3.0 // indirect
-	gopkg.in/stretchr/testify.v1 v1.2.2 // indirect
+	github.com/smartystreets/goconvey v1.7.2
+	github.com/tailscale/depaware v0.0.0-20210622194025-720c4b409502
+	github.com/urfave/cli v1.22.5
+	golang.org/x/crypto v0.0.0-20220128200615-198e4374d7ed
+	golang.org/x/term v0.0.0-20210422114643-f5beecf764ed // indirect
+	golang.org/x/tools v0.1.9
+	gorm.io/driver/mysql v1.2.3
+	gorm.io/driver/postgres v1.2.3
+	gorm.io/driver/sqlite v1.2.6
+	gorm.io/gorm v1.22.5
+	moul.io/srand v1.6.1
 )
+
+go 1.14

go.sum

@@ -1,100 +1,338 @@
-cloud.google.com/go v0.33.1 h1:fmJQWZ1w9PGkHR1YL/P7HloDvqlmKQ4Vpb7PC2e+aCk=
-cloud.google.com/go v0.33.1/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
-github.com/anmitsu/go-shlex v0.0.0-20161002113705-648efa622239 h1:kFOfPq6dUM1hTo4JG6LR5AXSUEsOjtdm0kw0FtQtMJA=
-github.com/anmitsu/go-shlex v0.0.0-20161002113705-648efa622239/go.mod h1:2FmKhYUyUczH0OGQWaF5ceTx0UBShxjsH6f8oGKYe2c=
-github.com/asaskevich/govalidator v0.0.0-20180720115003-f9ffefc3facf h1:eg0MeVzsP1G42dRafH3vf+al2vQIJU0YHX+1Tw87oco=
-github.com/asaskevich/govalidator v0.0.0-20180720115003-f9ffefc3facf/go.mod h1:lB+ZfQJz7igIIfQNfa7Ml4HSf2uFQQRzpGGRXenZAgY=
+github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
+github.com/Masterminds/semver/v3 v3.1.1 h1:hLg3sBzpNErnxhQtUy/mmLR2I9foDujNK030IGemrRc=
+github.com/Masterminds/semver/v3 v3.1.1/go.mod h1:VPu/7SZ7ePZ3QOrcuXROw5FAcLl4a0cBrbBpGY/8hQs=
+github.com/PuerkitoBio/goquery v1.5.1/go.mod h1:GsLWisAFVj4WgDibEWF4pvYnkVQBpKBKeU+7zCJoLcc=
+github.com/andybalholm/cascadia v1.1.0/go.mod h1:GsXiBklL0woXo1j/WYWtSYYC4ouU9PqHO0sqidkEA4Y=
+github.com/anmitsu/go-shlex v0.0.0-20200514113438-38f4b401e2be h1:9AeTilPcZAjCFIImctFaOjnTIavg87rW78vTPkQqLI8=
+github.com/anmitsu/go-shlex v0.0.0-20200514113438-38f4b401e2be/go.mod h1:ySMOLuWl6zY27l47sB3qLNK6tF2fkHG55UZxx8oIVo4=
+github.com/asaskevich/govalidator v0.0.0-20210307081110-f21760c49a8d h1:Byv0BzEl3/e6D5CLfI0j/7hiIEtvGVFPCZ7Ei2oq8iQ=
+github.com/asaskevich/govalidator v0.0.0-20210307081110-f21760c49a8d/go.mod h1:WaHUgvxTVq04UNunO+XhnAqY/wQc+bxr74GqbsZ/Jqw=
+github.com/cockroachdb/apd v1.1.0 h1:3LFP3629v+1aKXU5Q37mxmRxX/pIu1nijXydLShEq5I=
+github.com/cockroachdb/apd v1.1.0/go.mod h1:8Sl8LxpKi29FqWXR16WEFZRNSz3SoPzUzeMeY4+DwBQ=
+github.com/coreos/go-systemd v0.0.0-20190321100706-95778dfbb74e/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
+github.com/coreos/go-systemd v0.0.0-20190719114852-fd7a80b32e1f/go.mod h1:F5haX7vjVVG0kc13fIWeqUViNPyEJxv/OmvnBo0Yme4=
+github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
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+gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
+gopkg.in/inconshreveable/log15.v2 v2.0.0-20180818164646-67afb5ed74ec/go.mod h1:aPpfJ7XW+gOuirDoZ8gHhLh3kZ1B08FtV2bbmy7Jv3s=
+gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c h1:dUUwHk2QECo/6vqA44rthZ8ie2QXMNeKRTHCNY2nXvo=
+gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gorm.io/driver/mysql v1.0.1/go.mod h1:KtqSthtg55lFp3S5kUXqlGaelnWpKitn4k1xZTnoiPw=
+gorm.io/driver/mysql v1.2.3 h1:cZqzlOfg5Kf1VIdLC1D9hT6Cy9BgxhExLj/2tIgUe7Y=
+gorm.io/driver/mysql v1.2.3/go.mod h1:qsiz+XcAyMrS6QY+X3M9R6b/lKM1imKmcuK9kac5LTo=
+gorm.io/driver/postgres v1.0.0/go.mod h1:wtMFcOzmuA5QigNsgEIb7O5lhvH1tHAF1RbWmLWV4to=
+gorm.io/driver/postgres v1.2.3 h1:f4t0TmNMy9gh3TU2PX+EppoA6YsgFnyq8Ojtddb42To=
+gorm.io/driver/postgres v1.2.3/go.mod h1:pJV6RgYQPG47aM1f0QeOzFH9HxQc8JcmAgjRCgS0wjs=
+gorm.io/driver/sqlite v1.1.1/go.mod h1:hm2olEcl8Tmsc6eZyxYSeznnsDaMqamBvEXLNtBg4cI=
+gorm.io/driver/sqlite v1.2.6 h1:SStaH/b+280M7C8vXeZLz/zo9cLQmIGwwj3cSj7p6l4=
+gorm.io/driver/sqlite v1.2.6/go.mod h1:gyoX0vHiiwi0g49tv+x2E7l8ksauLK0U/gShcdUsjWY=
+gorm.io/driver/sqlserver v1.0.2 h1:FzxAlw0/7hntMzSiNfotpYCo9Lz8dqWQGdmCGqIiFGo=
+gorm.io/driver/sqlserver v1.0.2/go.mod h1:gb0Y9QePGgqjzrVyTQUZeh9zkd5v0iz71cM1B4ZycEY=
+gorm.io/gorm v1.9.19/go.mod h1:0HFTzE/SqkGTzK6TlDPPQbAYCluiVvhzoA1+aVyzenw=
+gorm.io/gorm v1.20.0/go.mod h1:0HFTzE/SqkGTzK6TlDPPQbAYCluiVvhzoA1+aVyzenw=
+gorm.io/gorm v1.22.3/go.mod h1:F+OptMscr0P2F2qU97WT1WimdH9GaQPoDW7AYd5i2Y0=
+gorm.io/gorm v1.22.4/go.mod h1:1aeVC+pe9ZmvKZban/gW4QPra7PRoTEssyc922qCAkk=
+gorm.io/gorm v1.22.5 h1:lYREBgc02Be/5lSCTuysZZDb6ffL2qrat6fg9CFbvXU=
+gorm.io/gorm v1.22.5/go.mod h1:l2lP/RyAtc1ynaTjFksBde/O8v9oOGIApu2/xRitmZk=
+honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
+moul.io/srand v1.6.1 h1:SJ335F+54ivLdlH7wH52Rtyv0Ffos6DpsF5wu3ZVMXU=
+moul.io/srand v1.6.1/go.mod h1:P2uaZB+GFstFNo8sEj6/U8FRV1n25kD0LLckFpJ+qvc=

helm/sshportal/.helmignore

@@ -0,0 +1,22 @@
+# Patterns to ignore when building packages.
+# This supports shell glob matching, relative path matching, and
+# negation (prefixed with !). Only one pattern per line.
+.DS_Store
+# Common VCS dirs
+.git/
+.gitignore
+.bzr/
+.bzrignore
+.hg/
+.hgignore
+.svn/
+# Common backup files
+*.swp
+*.bak
+*.tmp
+*~
+# Various IDEs
+.project
+.idea/
+*.tmproj
+.vscode/

helm/sshportal/Chart.yaml

@@ -0,0 +1,21 @@
+apiVersion: v2
+name: sshportal
+description: A Helm chart for SSHPortal on Kubernetes
+
+# A chart can be either an 'application' or a 'library' chart.
+#
+# Application charts are a collection of templates that can be packaged into versioned archives
+# to be deployed.
+#
+# Library charts provide useful utilities or functions for the chart developer. They're included as
+# a dependency of application charts to inject those utilities and functions into the rendering
+# pipeline. Library charts do not define any templates and therefore cannot be deployed.
+type: application
+
+# This is the chart version. This version number should be incremented each time you make changes
+# to the chart and its templates, including the app version.
+version: 0.1.0
+
+# This is the version number of the application being deployed. This version number should be
+# incremented each time you make changes to the application.
+appVersion: 1.10.0

helm/sshportal/templates/NOTES.txt

@@ -0,0 +1,33 @@
+1. Get the admin invitation token (only on first install):
+  export INVITE=$(kubectl --namespace sshportal logs -l "app.kubernetes.io/name={{ include "sshportal.name" . }},app.kubernetes.io/instance={{ .Release.Name }}" | grep -Eo "invite:[a-zA-Z0-9]+")
+
+2. Get the service IP and Port:
+{{- if contains "NodePort" .Values.service.type }}
+  export NODE_PORT=$(kubectl get --namespace {{ .Release.Namespace }} -o jsonpath="{.spec.ports[0].nodePort}" services {{ include "sshportal.fullname" . }})
+  export NODE_IP=$(kubectl get nodes --namespace {{ .Release.Namespace }} -o jsonpath="{.items[0].status.addresses[0].address}")
+{{- else if contains "LoadBalancer" .Values.service.type }}
+     NOTE: It may take a few minutes for the LoadBalancer IP to be available.
+           You can watch the status of by running 'kubectl get --namespace {{ .Release.Namespace }} svc -w {{ include "sshportal.fullname" . }}'
+  export SERVICE_IP=$(kubectl get svc --namespace {{ .Release.Namespace }} {{ include "sshportal.fullname" . }} --template "{{"{{ range (index .status.loadBalancer.ingress 0) }}{{.}}{{ end }}"}}")
+{{- else if contains "ClusterIP" .Values.service.type }}
+  export POD_NAME=$(kubectl get pods --namespace {{ .Release.Namespace }} -l "app.kubernetes.io/name={{ include "sshportal.name" . }},app.kubernetes.io/instance={{ .Release.Name }}" -o jsonpath="{.items[0].metadata.name}")
+  kubectl --namespace {{ .Release.Namespace }} port-forward $POD_NAME 2222:{{ .Values.service.port }}
+{{- end }}
+
+3. Enroll your SSH public key:
+{{- if contains "NodePort" .Values.service.type }}
+  ssh $NODE_IP -p $NODE_PORT -l $INVITE
+{{- else if contains "LoadBalancer" .Values.service.type }}
+  ssh $SERVICE_IP -p {{ .Values.service.port }} -l $INVITE
+{{- else if contains "ClusterIP" .Values.service.type }}
+  ssh localhost -p 2222 -l $INVITE
+{{- end }}
+
+4. Configure your {{ include "sshportal.name" . }} install:
+{{- if contains "NodePort" .Values.service.type }}
+  ssh admin@$NODE_IP -p $NODE_PORT
+{{- else if contains "LoadBalancer" .Values.service.type }}
+  ssh admin@$SERVICE_IP -p {{ .Values.service.port }}
+{{- else if contains "ClusterIP" .Values.service.type }}
+  ssh admin@localhost -p 2222
+{{- end }}

helm/sshportal/templates/_helpers.tpl

@@ -0,0 +1,63 @@
+{{/* vim: set filetype=mustache: */}}
+{{/*
+Expand the name of the chart.
+*/}}
+{{- define "sshportal.name" -}}
+{{- default .Chart.Name .Values.nameOverride | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+
+{{/*
+Create a default fully qualified app name.
+We truncate at 63 chars because some Kubernetes name fields are limited to this (by the DNS naming spec).
+If release name contains chart name it will be used as a full name.
+*/}}
+{{- define "sshportal.fullname" -}}
+{{- if .Values.fullnameOverride -}}
+{{- .Values.fullnameOverride | trunc 63 | trimSuffix "-" -}}
+{{- else -}}
+{{- $name := default .Chart.Name .Values.nameOverride -}}
+{{- if contains $name .Release.Name -}}
+{{- .Release.Name | trunc 63 | trimSuffix "-" -}}
+{{- else -}}
+{{- printf "%s-%s" .Release.Name $name | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+{{- end -}}
+{{- end -}}
+
+{{/*
+Create chart name and version as used by the chart label.
+*/}}
+{{- define "sshportal.chart" -}}
+{{- printf "%s-%s" .Chart.Name .Chart.Version | replace "+" "_" | trunc 63 | trimSuffix "-" -}}
+{{- end -}}
+
+{{/*
+Common labels
+*/}}
+{{- define "sshportal.labels" -}}
+helm.sh/chart: {{ include "sshportal.chart" . }}
+{{ include "sshportal.selectorLabels" . }}
+{{- if .Chart.AppVersion }}
+app.kubernetes.io/version: {{ .Chart.AppVersion | quote }}
+{{- end }}
+app.kubernetes.io/managed-by: {{ .Release.Service }}
+{{- end -}}
+
+{{/*
+Selector labels
+*/}}
+{{- define "sshportal.selectorLabels" -}}
+app.kubernetes.io/name: {{ include "sshportal.name" . }}
+app.kubernetes.io/instance: {{ .Release.Name }}
+{{- end -}}
+
+{{/*
+Create the name of the service account to use
+*/}}
+{{- define "sshportal.serviceAccountName" -}}
+{{- if .Values.serviceAccount.create -}}
+    {{ default (include "sshportal.fullname" .) .Values.serviceAccount.name }}
+{{- else -}}
+    {{ default "default" .Values.serviceAccount.name }}
+{{- end -}}
+{{- end -}}

helm/sshportal/templates/deployment.yaml

@@ -0,0 +1,69 @@
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: {{ include "sshportal.fullname" . }}
+  labels:
+    {{- include "sshportal.labels" . | nindent 4 }}
+spec:
+  replicas: {{ .Values.replicaCount }}
+  selector:
+    matchLabels:
+      {{- include "sshportal.selectorLabels" . | nindent 6 }}
+  template:
+    metadata:
+      labels:
+        {{- include "sshportal.selectorLabels" . | nindent 8 }}
+    spec:
+    {{- with .Values.imagePullSecrets }}
+      imagePullSecrets:
+        {{- toYaml . | nindent 8 }}
+    {{- end }}
+      securityContext:
+        {{- toYaml .Values.podSecurityContext | nindent 8 }}
+      containers:
+        - name: {{ .Chart.Name }}
+          securityContext:
+            {{- toYaml .Values.securityContext | nindent 12 }}
+          image: "{{ .Values.image.repository }}:v{{ .Chart.AppVersion }}"
+          imagePullPolicy: {{ .Values.image.pullPolicy }}
+          ports:
+            - name: ssh
+              containerPort: 2222
+              protocol: TCP
+          livenessProbe:
+            exec:
+              command:
+                - sshportal
+                - healthcheck
+                - --quiet
+          readinessProbe:
+            exec:
+              command:
+                - sshportal
+                - healthcheck
+                - --quiet
+          resources:
+            {{- toYaml .Values.resources | nindent 12 }}
+          env:
+          {{- if .Values.mysql.enabled }}
+          - name: SSHPORTAL_DATABASE_URL
+            value: {{ .Values.mysql.user }}:{{ .Values.mysql.password }}@tcp({{ .Values.mysql.server }}:{{ .Values.mysql.port }})/{{ .Values.mysql.database }}?charset=utf8&parseTime=true&loc=Local
+          - name: SSHPORTAL_DB_DRIVER
+            value: mysql
+          {{- end }}
+          {{- if .Values.debug}}
+          - name: SSHPORTAL_DEBUG
+            value: "1"
+          {{- end }}
+      {{- with .Values.nodeSelector }}
+      nodeSelector:
+        {{- toYaml . | nindent 8 }}
+      {{- end }}
+    {{- with .Values.affinity }}
+      affinity:
+        {{- toYaml . | nindent 8 }}
+    {{- end }}
+    {{- with .Values.tolerations }}
+      tolerations:
+        {{- toYaml . | nindent 8 }}
+    {{- end }}

helm/sshportal/templates/horizontal-pod-autoscaling.yaml

@@ -0,0 +1,21 @@
+{{- if .Values.mysql.enabled }}
+apiVersion: autoscaling/v2beta1
+kind: HorizontalPodAutoscaler
+metadata:
+  name: {{ include "sshportal.fullname" . }}
+  labels:
+    {{- include "sshportal.labels" . | nindent 4 }}
+spec:
+  maxReplicas: {{ .Values.autoscaling.maxReplicas }}
+  minReplicas: {{ .Values.autoscaling.minReplicas }}
+  scaleTargetRef:
+    apiVersion: apps/v1
+    kind: Deployment
+    name: {{ include "sshportal.fullname" . }}
+  metrics:
+    - type: Resource
+      resource:
+        name: cpu
+        targetAverageUtilization: {{ .Values.autoscaling.cpuTarget }}
+{{- end }}
+

helm/sshportal/templates/service.yaml

@@ -0,0 +1,17 @@
+apiVersion: v1
+kind: Service
+metadata:
+  name: {{ include "sshportal.fullname" . }}
+  annotations:
+    {{- toYaml .Values.service.annotations | nindent 4 }}
+  labels:
+    {{- include "sshportal.labels" . | nindent 4 }}
+spec:
+  type: {{ .Values.service.type }}
+  ports:
+    - port: {{ .Values.service.port }}
+      targetPort: 2222
+      protocol: TCP
+      name: ssh
+  selector:
+    {{- include "sshportal.selectorLabels" . | nindent 4 }}

helm/sshportal/templates/tests/test-connection.yaml

@@ -0,0 +1,15 @@
+apiVersion: v1
+kind: Pod
+metadata:
+  name: "{{ include "sshportal.fullname" . }}-test-connection"
+  labels:
+{{ include "sshportal.labels" . | nindent 4 }}
+  annotations:
+    "helm.sh/hook": test-success
+spec:
+  containers:
+    - name: wget
+      image: busybox
+      command: ['wget']
+      args:  ['{{ include "sshportal.fullname" . }}:{{ .Values.service.port }}']
+  restartPolicy: Never

helm/sshportal/values.yaml

@@ -0,0 +1,119 @@
+# Default values for sshportal.
+# This is a YAML-formatted file.
+# Declare variables to be passed into your templates.
+
+## Enable SSHPortal debug mode
+##
+debug: false
+
+## SSH Portal Docker image
+##
+image:
+  repository: moul/sshportal
+  pullPolicy: IfNotPresent
+
+## Reference to one or more secrets to be used when pulling images
+## ref: https://kubernetes.io/docs/tasks/configure-pod-container/pull-image-private-registry/
+##
+imagePullSecrets: []
+
+## Provide a name in place of sshportal for `app:` labels
+##
+nameOverride: ""
+
+## Provide a name to substitute for the full names of resources
+##
+fullnameOverride: ""
+
+## PodSecurityContext holds pod-level security attributes.
+## ref: https://kubernetes.io/docs/tasks/configure-pod-container/security-context/
+##
+podSecurityContext: {}
+  # fsGroup: 2000
+
+## SecurityContext holds container-level security attributes.
+## ref: https://kubernetes.io/docs/tasks/configure-pod-container/security-context/
+##
+securityContext: {}
+  # capabilities:
+  #   drop:
+  #   - ALL
+  # readOnlyRootFilesystem: true
+  # runAsNonRoot: true
+  # runAsUser: 1000
+
+## Service
+##
+service:
+  ## Configure additional annotations for SSHPortal service
+  ##
+  annotations: {}
+    # service.beta.kubernetes.io/openstack-internal-load-balancer: "true"
+
+  ## Service type, one of
+  ## NodePort, ClusterIP, LoadBalancer
+  ##
+  type: LoadBalancer
+
+  ## Port to expose on the service
+  ##
+  port: 22
+
+## Define resources requests and limits
+## ref: https://kubernetes.io/docs/user-guide/compute-resources/
+##
+resources: {}
+  # requests:
+  #   cpu: 100m
+  #   memory: 128Mi
+  # limits:
+  #   cpu: 2
+  #   memory: 2Gi
+
+## Mysql/MariaDB configuration for HA
+##
+mysql:
+  enabled: false
+
+  ## Database user
+  ##
+  user: sshportal
+
+  ## Database password
+  ##
+  password: change_me
+
+  ## Database name
+  ##
+  database: sshportal
+
+  ## Database server FQDN or IP
+  ##
+  server: mariadb-mariadb-galera
+
+  ## Database port
+  ##
+  port: 3306
+
+## Define which Nodes the Pods are scheduled on.
+## ref: https://kubernetes.io/docs/user-guide/node-selection/
+##
+nodeSelector: {}
+
+## The pod's tolerations.
+## ref: https://kubernetes.io/docs/concepts/configuration/taint-and-toleration/
+##
+tolerations: []
+
+## Assign custom affinity rules
+## ref: https://kubernetes.io/docs/concepts/configuration/assign-pod-node/
+##
+affinity: {}
+
+## HPA support, require `mysql.enable: true`
+## This section enables sshportal to autoscale based on metrics.
+##
+autoscaling:
+  maxReplicas: 4
+  minReplicas: 2
+  cpuTarget: 60

internal/tools/tools.go

@@ -0,0 +1,11 @@
+// +build tools
+
+package tools
+
+import (
+	// required by depaware
+	_ "github.com/tailscale/depaware/depaware"
+
+	// required by goimports
+	_ "golang.org/x/tools/cover"
+)

main.go

@@ -1,41 +1,29 @@
 package main // import "moul.io/sshportal"
 
 import (
-	"fmt"
 	"log"
-	"math"
 	"math/rand"
-	"net"
 	"os"
 	"path"
-	"time"
 
-	"github.com/jinzhu/gorm"
-	_ "github.com/jinzhu/gorm/dialects/mysql"
-	_ "github.com/jinzhu/gorm/dialects/sqlite"
-	"github.com/moul/ssh"
 	"github.com/urfave/cli"
-	gossh "golang.org/x/crypto/ssh"
+	"moul.io/srand"
 )
 
 var (
-	// Version should be updated by hand at each release
-	Version = "1.9.0+dev"
 	// GitTag will be overwritten automatically by the build system
-	GitTag string
+	GitTag = "n/a"
 	// GitSha will be overwritten automatically by the build system
-	GitSha string
-	// GitBranch will be overwritten automatically by the build system
-	GitBranch string
+	GitSha = "n/a"
 )
 
 func main() {
-	rand.Seed(time.Now().UnixNano())
+	rand.Seed(srand.MustSecure())
 
 	app := cli.NewApp()
 	app.Name = path.Base(os.Args[0])
 	app.Author = "Manfred Touron"
-	app.Version = Version + " (" + GitSha + ")"
+	app.Version = GitTag + " (" + GitSha + ")"
 	app.Email = "https://moul.io/sshportal"
 	app.Commands = []cli.Command{
 		{
@@ -45,7 +33,7 @@ func main() {
 				if err := ensureLogDirectory(c.String("logs-location")); err != nil {
 					return err
 				}
-				cfg, err := parseServeConfig(c)
+				cfg, err := parseServerConfig(c)
 				if err != nil {
 					return err
 				}
@@ -91,6 +79,11 @@ func main() {
 					Value: 0,
 					Usage: "Duration before an inactive connection is timed out (0 to disable)",
 				},
+				cli.StringFlag{
+					Name:   "acl-check-cmd",
+					EnvVar: "SSHPORTAL_ACL_CHECK_CMD",
+					Usage:  "Execute external command to check ACL",
+				},
 			},
 		}, {
 			Name:   "healthcheck",
@@ -120,82 +113,3 @@ func main() {
 		log.Fatalf("error: %v", err)
 	}
 }
-
-var defaultChannelHandler ssh.ChannelHandler
-
-func server(c *configServe) (err error) {
-	var db = (*gorm.DB)(nil)
-
-	// try to setup the local DB
-	if db, err = gorm.Open(c.dbDriver, c.dbURL); err != nil {
-		return
-	}
-	defer func() {
-		origErr := err
-		err = db.Close()
-		if origErr != nil {
-			err = origErr
-		}
-	}()
-	if err = db.DB().Ping(); err != nil {
-		return
-	}
-	db.LogMode(c.debug)
-	if err = dbInit(db); err != nil {
-		return
-	}
-
-	// create TCP listening socket
-	ln, err := net.Listen("tcp", c.bindAddr)
-	if err != nil {
-		return err
-	}
-
-	// configure server
-	srv := &ssh.Server{
-		Addr:    c.bindAddr,
-		Handler: shellHandler, // ssh.Server.Handler is the handler for the DefaultSessionHandler
-		Version: fmt.Sprintf("sshportal-%s", Version),
-	}
-
-	// configure channel handler
-	defaultSessionHandler := srv.GetChannelHandler("session")
-	defaultDirectTcpipHandler := srv.GetChannelHandler("direct-tcpip")
-	defaultChannelHandler = func(srv *ssh.Server, conn *gossh.ServerConn, newChan gossh.NewChannel, ctx ssh.Context) {
-		switch newChan.ChannelType() {
-		case "session":
-			go defaultSessionHandler(srv, conn, newChan, ctx)
-		case "direct-tcpip":
-			go defaultDirectTcpipHandler(srv, conn, newChan, ctx)
-		default:
-			if err := newChan.Reject(gossh.UnknownChannelType, "unsupported channel type"); err != nil {
-				log.Printf("failed to reject chan: %v", err)
-			}
-		}
-	}
-	srv.SetChannelHandler("session", nil)
-	srv.SetChannelHandler("direct-tcpip", nil)
-	srv.SetChannelHandler("default", channelHandler)
-
-	if c.idleTimeout != 0 {
-		srv.IdleTimeout = c.idleTimeout
-		// gliderlabs/ssh requires MaxTimeout to be non-zero if we want to use IdleTimeout.
-		// So, set it to the max value, because we don't want a max timeout.
-		srv.MaxTimeout = math.MaxInt64
-	}
-
-	for _, opt := range []ssh.Option{
-		// custom PublicKeyAuth handler
-		ssh.PublicKeyAuth(publicKeyAuthHandler(db, c)),
-		ssh.PasswordAuth(passwordAuthHandler(db, c)),
-		// retrieve sshportal SSH private key from database
-		privateKeyFromDB(db, c.aesKey),
-	} {
-		if err := srv.SetOption(opt); err != nil {
-			return err
-		}
-	}
-
-	log.Printf("info: SSH Server accepting connections on %s, idle-timout=%v", c.bindAddr, c.idleTimeout)
-	return srv.Serve(ln)
-}

pkg/bastion/acl.go

@@ -0,0 +1,120 @@
+package bastion
+
+import (
+	"context"
+	"encoding/json"
+	"fmt"
+	"log"
+	"os/exec"
+	"sort"
+	"strings"
+	"time"
+
+	"moul.io/sshportal/pkg/dbmodels"
+)
+
+// ACLHookTimeout is timeout for external ACL hook execution
+const ACLHookTimeout = 2 * time.Second
+
+type byWeight []*dbmodels.ACL
+
+func (a byWeight) Len() int           { return len(a) }
+func (a byWeight) Swap(i, j int)      { a[i], a[j] = a[j], a[i] }
+func (a byWeight) Less(i, j int) bool { return a[i].Weight < a[j].Weight }
+
+func checkACLs(user dbmodels.User, host dbmodels.Host, aclCheckCmd string) string {
+	currentTime := time.Now()
+
+	// shared ACLs between user and host
+	aclMap := map[uint]*dbmodels.ACL{}
+	for _, userGroup := range user.Groups {
+		for _, userGroupACL := range userGroup.ACLs {
+			for _, hostGroup := range host.Groups {
+				for _, hostGroupACL := range hostGroup.ACLs {
+					if userGroupACL.ID == hostGroupACL.ID {
+						if (userGroupACL.Inception == nil || currentTime.After(*userGroupACL.Inception)) &&
+							(userGroupACL.Expiration == nil || currentTime.Before(*userGroupACL.Expiration)) {
+							aclMap[userGroupACL.ID] = userGroupACL
+						}
+					}
+				}
+			}
+		}
+	}
+	// FIXME: add ACLs that match host pattern
+
+	// if no shared ACL then execute ACLs hook if it exists and return its result
+	if len(aclMap) == 0 {
+		action, err := checkACLsHook(aclCheckCmd, string(dbmodels.ACLActionDeny), user, host)
+		if err != nil {
+			log.Println(err)
+		}
+		return action
+	}
+
+	// transform map to slice and sort it
+	acls := make([]*dbmodels.ACL, 0, len(aclMap))
+	for _, acl := range aclMap {
+		acls = append(acls, acl)
+	}
+	sort.Sort(byWeight(acls))
+
+	action, err := checkACLsHook(aclCheckCmd, acls[0].Action, user, host)
+	if err != nil {
+		log.Println(err)
+	}
+
+	return action
+}
+
+// checkACLsHook executes external command to check ACL and passes following parameters:
+// $1 - SSH Portal `action` (`allow` or `deny`)
+// $2 - User as JSON string
+// $3 - Host as JSON string
+// External program has to return `allow` or `deny` in stdout.
+// In case of any error function returns `action`.
+func checkACLsHook(aclCheckCmd string, action string, user dbmodels.User, host dbmodels.Host) (string, error) {
+	if aclCheckCmd == "" {
+		return action, nil
+	}
+
+	ctx, cancel := context.WithTimeout(context.Background(), ACLHookTimeout)
+	defer cancel()
+
+	jsonUser, err := json.Marshal(user)
+	if err != nil {
+		return action, err
+	}
+
+	jsonHost, err := json.Marshal(host)
+	if err != nil {
+		return action, err
+	}
+
+	args := []string{
+		action,
+		string(jsonUser),
+		string(jsonHost),
+	}
+
+	cmd := exec.CommandContext(ctx, aclCheckCmd, args...)
+	out, err := cmd.Output()
+	if err != nil {
+		return action, err
+	}
+
+	if ctx.Err() == context.DeadlineExceeded {
+		return action, fmt.Errorf("external ACL hook command timed out")
+	}
+
+	outStr := strings.TrimSuffix(string(out), "\n")
+
+	switch outStr {
+	case string(dbmodels.ACLActionAllow):
+		return string(dbmodels.ACLActionAllow), nil
+	case string(dbmodels.ACLActionDeny):
+		return string(dbmodels.ACLActionDeny), nil
+	default:
+		return action, fmt.Errorf("acl-check-cmd wrong output '%s'", outStr)
+	}
+}

pkg/bastion/acl_test.go

@@ -0,0 +1,47 @@
+package bastion // import "moul.io/sshportal/pkg/bastion"
+
+import (
+	"io/ioutil"
+	"os"
+	"path/filepath"
+	"testing"
+
+	. "github.com/smartystreets/goconvey/convey"
+	"gorm.io/driver/sqlite"
+	"gorm.io/gorm"
+	"moul.io/sshportal/pkg/dbmodels"
+)
+
+func TestCheckACLs(t *testing.T) {
+	Convey("Testing CheckACLs", t, func(c C) {
+		// create tmp dir
+		tempDir, err := ioutil.TempDir("", "sshportal")
+		c.So(err, ShouldBeNil)
+		defer func() {
+			c.So(os.RemoveAll(tempDir), ShouldBeNil)
+		}()
+
+		// create sqlite db
+		db, err := gorm.Open(sqlite.Open(filepath.Join(tempDir, "sshportal.db")), &gorm.Config{})
+		c.So(err, ShouldBeNil)
+		c.So(DBInit(db), ShouldBeNil)
+
+		// create dummy objects
+		var hostGroup dbmodels.HostGroup
+		err = dbmodels.HostGroupsByIdentifiers(db, []string{"default"}).First(&hostGroup).Error
+		c.So(err, ShouldBeNil)
+		db.Create(&dbmodels.Host{Groups: []*dbmodels.HostGroup{&hostGroup}})
+
+		//. load db
+		var (
+			hosts []dbmodels.Host
+			users []dbmodels.User
+		)
+		db.Preload("Groups").Preload("Groups.ACLs").Find(&hosts)
+		db.Preload("Groups").Preload("Groups.ACLs").Find(&users)
+
+		// test
+		action := checkACLs(users[0], hosts[0], "")
+		c.So(action, ShouldEqual, dbmodels.ACLActionAllow)
+	})
+}

pkg/bastion/dbinit.go

@@ -0,0 +1,684 @@
+package bastion // import "moul.io/sshportal/pkg/bastion"
+
+import (
+	"fmt"
+	"io/ioutil"
+	"log"
+	"math/rand"
+	"os"
+	"os/user"
+	"strings"
+	"time"
+
+	gormigrate "github.com/go-gormigrate/gormigrate/v2"
+	gossh "golang.org/x/crypto/ssh"
+	"gorm.io/gorm"
+	"moul.io/sshportal/pkg/crypto"
+	"moul.io/sshportal/pkg/dbmodels"
+)
+
+func DBInit(db *gorm.DB) error {
+	log.SetOutput(ioutil.Discard)
+	log.SetOutput(os.Stderr)
+
+	m := gormigrate.New(db, gormigrate.DefaultOptions, []*gormigrate.Migration{
+		{
+			ID: "1",
+			Migrate: func(tx *gorm.DB) error {
+				type Setting struct {
+					gorm.Model
+					Name  string `gorm:"index:uix_settings_name,unique"`
+					Value string
+				}
+				return tx.AutoMigrate(&Setting{})
+			},
+			Rollback: func(tx *gorm.DB) error {
+				return tx.Migrator().DropTable("settings")
+			},
+		}, {
+			ID: "2",
+			Migrate: func(tx *gorm.DB) error {
+				type SSHKey struct {
+					gorm.Model
+					Name        string
+					Type        string
+					Length      uint
+					Fingerprint string
+					PrivKey     string           `sql:"size:5000"`
+					PubKey      string           `sql:"size:1000"`
+					Hosts       []*dbmodels.Host `gorm:"ForeignKey:SSHKeyID"`
+					Comment     string
+				}
+				return tx.AutoMigrate(&SSHKey{})
+			},
+			Rollback: func(tx *gorm.DB) error {
+				return tx.Migrator().DropTable("ssh_keys")
+			},
+		}, {
+			ID: "3",
+			Migrate: func(tx *gorm.DB) error {
+				type Host struct {
+					gorm.Model
+					Name        string `gorm:"size:32"`
+					Addr        string
+					User        string
+					Password    string
+					SSHKey      *dbmodels.SSHKey      `gorm:"ForeignKey:SSHKeyID"`
+					SSHKeyID    uint                  `gorm:"index"`
+					Groups      []*dbmodels.HostGroup `gorm:"many2many:host_host_groups;"`
+					Fingerprint string
+					Comment     string
+				}
+				return tx.AutoMigrate(&Host{})
+			},
+			Rollback: func(tx *gorm.DB) error {
+				return tx.Migrator().DropTable("hosts")
+			},
+		}, {
+			ID: "4",
+			Migrate: func(tx *gorm.DB) error {
+				type UserKey struct {
+					gorm.Model
+					Key     []byte         `sql:"size:1000"`
+					UserID  uint           ``
+					User    *dbmodels.User `gorm:"ForeignKey:UserID"`
+					Comment string
+				}
+				return tx.AutoMigrate(&UserKey{})
+			},
+			Rollback: func(tx *gorm.DB) error {
+				return tx.Migrator().DropTable("user_keys")
+			},
+		}, {
+			ID: "5",
+			Migrate: func(tx *gorm.DB) error {
+				type User struct {
+					gorm.Model
+					IsAdmin     bool
+					Email       string
+					Name        string
+					Keys        []*dbmodels.UserKey   `gorm:"ForeignKey:UserID"`
+					Groups      []*dbmodels.UserGroup `gorm:"many2many:user_user_groups;"`
+					Comment     string
+					InviteToken string
+				}
+				return tx.AutoMigrate(&User{})
+			},
+			Rollback: func(tx *gorm.DB) error {
+				return tx.Migrator().DropTable("users")
+			},
+		}, {
+			ID: "6",
+			Migrate: func(tx *gorm.DB) error {
+				type UserGroup struct {
+					gorm.Model
+					Name    string
+					Users   []*dbmodels.User `gorm:"many2many:user_user_groups;"`
+					ACLs    []*dbmodels.ACL  `gorm:"many2many:user_group_acls;"`
+					Comment string
+				}
+				return tx.AutoMigrate(&UserGroup{})
+			},
+			Rollback: func(tx *gorm.DB) error {
+				return tx.Migrator().DropTable("user_groups")
+			},
+		}, {
+			ID: "7",
+			Migrate: func(tx *gorm.DB) error {
+				type HostGroup struct {
+					gorm.Model
+					Name    string
+					Hosts   []*dbmodels.Host `gorm:"many2many:host_host_groups;"`
+					ACLs    []*dbmodels.ACL  `gorm:"many2many:host_group_acls;"`
+					Comment string
+				}
+				return tx.AutoMigrate(&HostGroup{})
+			},
+			Rollback: func(tx *gorm.DB) error {
+				return tx.Migrator().DropTable("host_groups")
+			},
+		}, {
+			ID: "8",
+			Migrate: func(tx *gorm.DB) error {
+				type ACL struct {
+					gorm.Model
+					HostGroups  []*dbmodels.HostGroup `gorm:"many2many:host_group_acls;"`
+					UserGroups  []*dbmodels.UserGroup `gorm:"many2many:user_group_acls;"`
+					HostPattern string
+					Action      string
+					Weight      uint
+					Comment     string
+				}
+
+				return tx.AutoMigrate(&ACL{})
+			},
+			Rollback: func(tx *gorm.DB) error {
+				return tx.Migrator().DropTable("acls")
+			},
+		}, {
+			ID: "9",
+			Migrate: func(tx *gorm.DB) error {
+				if err := tx.Migrator().DropIndex(&dbmodels.Setting{}, "uix_settings_name"); err != nil {
+					return err
+				}
+				return tx.Migrator().CreateIndex(&dbmodels.Setting{}, "uix_settings_name")
+			},
+			Rollback: func(tx *gorm.DB) error {
+				return tx.Migrator().DropIndex(&dbmodels.Setting{}, "uix_settings_name")
+			},
+		}, {
+			ID: "10",
+			Migrate: func(tx *gorm.DB) error {
+				if err := tx.Migrator().DropIndex(&dbmodels.SSHKey{}, "uix_keys_name"); err != nil {
+					return err
+				}
+				return tx.Migrator().CreateIndex(&dbmodels.SSHKey{}, "uix_keys_name")
+			},
+			Rollback: func(tx *gorm.DB) error {
+				return tx.Migrator().DropIndex(&dbmodels.SSHKey{}, "uix_keys_name")
+			},
+		}, {
+			ID: "11",
+			Migrate: func(tx *gorm.DB) error {
+				if err := tx.Migrator().DropIndex(&dbmodels.Host{}, "uix_hosts_name"); err != nil {
+					return err
+				}
+				return tx.Migrator().CreateIndex(&dbmodels.Host{}, "uix_hosts_name")
+			},
+			Rollback: func(tx *gorm.DB) error {
+				return tx.Migrator().DropIndex(&dbmodels.Host{}, "uix_hosts_name")
+			},
+		}, {
+			ID: "12",
+			Migrate: func(tx *gorm.DB) error {
+				if err := tx.Migrator().DropIndex(&dbmodels.User{}, "uix_users_name"); err != nil {
+					return err
+				}
+				return tx.Migrator().CreateIndex(&dbmodels.User{}, "uix_users_name")
+			},
+			Rollback: func(tx *gorm.DB) error {
+				return tx.Migrator().DropIndex(&dbmodels.User{}, "uix_users_name")
+			},
+		}, {
+			ID: "13",
+			Migrate: func(tx *gorm.DB) error {
+				if err := tx.Migrator().DropIndex(&dbmodels.UserGroup{}, "uix_usergroups_name"); err != nil {
+					return err
+				}
+				return tx.Migrator().CreateIndex(&dbmodels.UserGroup{}, "uix_usergroups_name")
+			},
+			Rollback: func(tx *gorm.DB) error {
+				return tx.Migrator().DropIndex(&dbmodels.UserGroup{}, "uix_usergroups_name")
+			},
+		}, {
+			ID: "14",
+			Migrate: func(tx *gorm.DB) error {
+				if err := tx.Migrator().DropIndex(&dbmodels.HostGroup{}, "uix_hostgroups_name"); err != nil {
+					return err
+				}
+				return tx.Migrator().CreateIndex(&dbmodels.HostGroup{}, "uix_hostgroups_name")
+			},
+			Rollback: func(tx *gorm.DB) error {
+				return tx.Migrator().DropIndex(&dbmodels.HostGroup{}, "uix_hostgroups_name")
+			},
+		}, {
+			ID: "15",
+			Migrate: func(tx *gorm.DB) error {
+				type UserRole struct {
+					gorm.Model
+					Name  string           `valid:"required,length(1|32),unix_user"`
+					Users []*dbmodels.User `gorm:"many2many:user_user_roles"`
+				}
+				return tx.AutoMigrate(&UserRole{})
+			},
+			Rollback: func(tx *gorm.DB) error {
+				return tx.Migrator().DropTable("user_roles")
+			},
+		}, {
+			ID: "16",
+			Migrate: func(tx *gorm.DB) error {
+				type User struct {
+					gorm.Model
+					IsAdmin     bool
+					Roles       []*dbmodels.UserRole  `gorm:"many2many:user_user_roles"`
+					Email       string                `valid:"required,email"`
+					Name        string                `valid:"required,length(1|32),unix_user"`
+					Keys        []*dbmodels.UserKey   `gorm:"ForeignKey:UserID"`
+					Groups      []*dbmodels.UserGroup `gorm:"many2many:user_user_groups;"`
+					Comment     string                `valid:"optional"`
+					InviteToken string                `valid:"optional,length(10|60)"`
+				}
+				return tx.AutoMigrate(&User{})
+			},
+			Rollback: func(tx *gorm.DB) error {
+				return fmt.Errorf("not implemented")
+			},
+		}, {
+			ID: "17",
+			Migrate: func(tx *gorm.DB) error {
+				return tx.Create(&dbmodels.UserRole{Name: "admin"}).Error
+			},
+			Rollback: func(tx *gorm.DB) error {
+				return tx.Where("name = ?", "admin").Unscoped().Delete(&dbmodels.UserRole{}).Error
+			},
+		}, {
+			ID: "18",
+			Migrate: func(tx *gorm.DB) error {
+				var adminRole dbmodels.UserRole
+				if err := db.Where("name = ?", "admin").First(&adminRole).Error; err != nil {
+					return err
+				}
+
+				var users []*dbmodels.User
+				if err := db.Preload("Roles").Where("is_admin = ?", true).Find(&users).Error; err != nil {
+					return err
+				}
+
+				for _, user := range users {
+					user.Roles = append(user.Roles, &adminRole)
+					if err := tx.Save(user).Error; err != nil {
+						return err
+					}
+				}
+				return nil
+			},
+			Rollback: func(tx *gorm.DB) error {
+				return fmt.Errorf("not implemented")
+			},
+		}, {
+			ID: "19",
+			Migrate: func(tx *gorm.DB) error {
+				type User struct {
+					gorm.Model
+					Roles       []*dbmodels.UserRole  `gorm:"many2many:user_user_roles"`
+					Email       string                `valid:"required,email"`
+					Name        string                `valid:"required,length(1|32),unix_user"`
+					Keys        []*dbmodels.UserKey   `gorm:"ForeignKey:UserID"`
+					Groups      []*dbmodels.UserGroup `gorm:"many2many:user_user_groups;"`
+					Comment     string                `valid:"optional"`
+					InviteToken string                `valid:"optional,length(10|60)"`
+				}
+				return tx.AutoMigrate(&User{})
+			},
+			Rollback: func(tx *gorm.DB) error {
+				return fmt.Errorf("not implemented")
+			},
+		}, {
+			ID: "20",
+			Migrate: func(tx *gorm.DB) error {
+				return tx.Create(&dbmodels.UserRole{Name: "listhosts"}).Error
+			},
+			Rollback: func(tx *gorm.DB) error {
+				return tx.Where("name = ?", "listhosts").Unscoped().Delete(&dbmodels.UserRole{}).Error
+			},
+		}, {
+			ID: "21",
+			Migrate: func(tx *gorm.DB) error {
+				type Session struct {
+					gorm.Model
+					StoppedAt time.Time      `valid:"optional"`
+					Status    string         `valid:"required"`
+					User      *dbmodels.User `gorm:"ForeignKey:UserID"`
+					Host      *dbmodels.Host `gorm:"ForeignKey:HostID"`
+					UserID    uint           `valid:"optional"`
+					HostID    uint           `valid:"optional"`
+					ErrMsg    string         `valid:"optional"`
+					Comment   string         `valid:"optional"`
+				}
+				return tx.AutoMigrate(&Session{})
+			},
+			Rollback: func(tx *gorm.DB) error {
+				return tx.Migrator().DropTable("sessions")
+			},
+		}, {
+			ID: "22",
+			Migrate: func(tx *gorm.DB) error {
+				type Event struct {
+					gorm.Model
+					Author   *dbmodels.User `gorm:"ForeignKey:AuthorID"`
+					AuthorID uint           `valid:"optional"`
+					Domain   string         `valid:"required"`
+					Action   string         `valid:"required"`
+					Entity   string         `valid:"optional"`
+					Args     []byte         `sql:"size:10000" valid:"optional,length(1|10000)"`
+				}
+				return tx.AutoMigrate(&Event{})
+			},
+			Rollback: func(tx *gorm.DB) error {
+				return tx.Migrator().DropTable("events")
+			},
+		}, {
+			ID: "23",
+			Migrate: func(tx *gorm.DB) error {
+				type UserKey struct {
+					gorm.Model
+					Key           []byte         `sql:"size:1000" valid:"required,length(1|1000)"`
+					AuthorizedKey string         `sql:"size:1000" valid:"required,length(1|1000)"`
+					UserID        uint           ``
+					User          *dbmodels.User `gorm:"ForeignKey:UserID"`
+					Comment       string         `valid:"optional"`
+				}
+				return tx.AutoMigrate(&UserKey{})
+			},
+			Rollback: func(tx *gorm.DB) error {
+				return fmt.Errorf("not implemented")
+			},
+		}, {
+			ID: "24",
+			Migrate: func(tx *gorm.DB) error {
+				var userKeys []*dbmodels.UserKey
+				if err := db.Find(&userKeys).Error; err != nil {
+					return err
+				}
+
+				for _, userKey := range userKeys {
+					key, err := gossh.ParsePublicKey(userKey.Key)
+					if err != nil {
+						return err
+					}
+					userKey.AuthorizedKey = string(gossh.MarshalAuthorizedKey(key))
+					if err := db.Model(userKey).Updates(userKey).Error; err != nil {
+						return err
+					}
+				}
+				return nil
+			},
+			Rollback: func(tx *gorm.DB) error {
+				return fmt.Errorf("not implemented")
+			},
+		}, {
+			ID: "25",
+			Migrate: func(tx *gorm.DB) error {
+				type Host struct {
+					gorm.Model
+					Name        string                `gorm:"size:32" valid:"required,length(1|32),unix_user"`
+					Addr        string                `valid:"required"`
+					User        string                `valid:"optional"`
+					Password    string                `valid:"optional"`
+					SSHKey      *dbmodels.SSHKey      `gorm:"ForeignKey:SSHKeyID"`
+					SSHKeyID    uint                  `gorm:"index"`
+					HostKey     []byte                `sql:"size:1000" valid:"optional"`
+					Groups      []*dbmodels.HostGroup `gorm:"many2many:host_host_groups;"`
+					Fingerprint string                `valid:"optional"`
+					Comment     string                `valid:"optional"`
+				}
+				return tx.AutoMigrate(&Host{})
+			},
+			Rollback: func(tx *gorm.DB) error {
+				return fmt.Errorf("not implemented")
+			},
+		}, {
+			ID: "26",
+			Migrate: func(tx *gorm.DB) error {
+				type Session struct {
+					gorm.Model
+					StoppedAt *time.Time     `sql:"index" valid:"optional"`
+					Status    string         `valid:"required"`
+					User      *dbmodels.User `gorm:"ForeignKey:UserID"`
+					Host      *dbmodels.Host `gorm:"ForeignKey:HostID"`
+					UserID    uint           `valid:"optional"`
+					HostID    uint           `valid:"optional"`
+					ErrMsg    string         `valid:"optional"`
+					Comment   string         `valid:"optional"`
+				}
+				return tx.AutoMigrate(&Session{})
+			},
+			Rollback: func(tx *gorm.DB) error {
+				return fmt.Errorf("not implemented")
+			},
+		}, {
+			ID: "27",
+			Migrate: func(tx *gorm.DB) error {
+				var sessions []*dbmodels.Session
+				if err := db.Find(&sessions).Error; err != nil {
+					return err
+				}
+
+				for _, session := range sessions {
+					if session.StoppedAt != nil && session.StoppedAt.IsZero() {
+						if err := db.Model(session).Updates(map[string]interface{}{"stopped_at": nil}).Error; err != nil {
+							return err
+						}
+					}
+				}
+				return nil
+			},
+			Rollback: func(tx *gorm.DB) error {
+				return fmt.Errorf("not implemented")
+			},
+		}, {
+			ID: "28",
+			Migrate: func(tx *gorm.DB) error {
+				type Host struct {
+					gorm.Model
+					Name     string `gorm:"size:32"`
+					Addr     string
+					User     string
+					Password string
+					URL      string
+					SSHKey   *dbmodels.SSHKey      `gorm:"ForeignKey:SSHKeyID"`
+					SSHKeyID uint                  `gorm:"index"`
+					HostKey  []byte                `sql:"size:1000"`
+					Groups   []*dbmodels.HostGroup `gorm:"many2many:host_host_groups;"`
+					Comment  string
+				}
+				return tx.AutoMigrate(&Host{})
+			},
+			Rollback: func(tx *gorm.DB) error {
+				return fmt.Errorf("not implemented")
+			},
+		}, {
+			ID: "29",
+			Migrate: func(tx *gorm.DB) error {
+				type Host struct {
+					gorm.Model
+					Name     string `gorm:"size:32"`
+					Addr     string
+					User     string
+					Password string
+					URL      string
+					SSHKey   *dbmodels.SSHKey      `gorm:"ForeignKey:SSHKeyID"`
+					SSHKeyID uint                  `gorm:"index"`
+					HostKey  []byte                `sql:"size:1000"`
+					Groups   []*dbmodels.HostGroup `gorm:"many2many:host_host_groups;"`
+					Comment  string
+					Hop      *dbmodels.Host
+					HopID    uint
+				}
+				return tx.AutoMigrate(&Host{})
+			},
+			Rollback: func(tx *gorm.DB) error {
+				return fmt.Errorf("not implemented")
+			},
+		}, {
+			ID: "30",
+			Migrate: func(tx *gorm.DB) error {
+				type Host struct {
+					gorm.Model
+					Name     string `gorm:"size:32"`
+					Addr     string
+					User     string
+					Password string
+					URL      string
+					SSHKey   *dbmodels.SSHKey      `gorm:"ForeignKey:SSHKeyID"`
+					SSHKeyID uint                  `gorm:"index"`
+					HostKey  []byte                `sql:"size:10000"`
+					Groups   []*dbmodels.HostGroup `gorm:"many2many:host_host_groups;"`
+					Comment  string
+					Hop      *dbmodels.Host
+					Logging  string
+					HopID    uint
+				}
+				return tx.AutoMigrate(&Host{})
+			},
+			Rollback: func(tx *gorm.DB) error { return fmt.Errorf("not implemented") },
+		}, {
+			ID: "31",
+			Migrate: func(tx *gorm.DB) error {
+				return tx.Session(&gorm.Session{AllowGlobalUpdate: true}).Model(&dbmodels.Host{}).Updates(&dbmodels.Host{Logging: "everything"}).Error
+			},
+			Rollback: func(tx *gorm.DB) error { return fmt.Errorf("not implemented") },
+		}, {
+			ID: "32",
+			Migrate: func(tx *gorm.DB) error {
+				type ACL struct {
+					gorm.Model
+					HostGroups  []*dbmodels.HostGroup `gorm:"many2many:host_group_acls;"`
+					UserGroups  []*dbmodels.UserGroup `gorm:"many2many:user_group_acls;"`
+					HostPattern string                `valid:"optional"`
+					Action      string                `valid:"required"`
+					Weight      uint                  ``
+					Comment     string                `valid:"optional"`
+					Inception   *time.Time
+					Expiration  *time.Time
+				}
+				return tx.AutoMigrate(&ACL{})
+			},
+			Rollback: func(tx *gorm.DB) error { return fmt.Errorf("not implemented") },
+		},
+	})
+	if err := m.Migrate(); err != nil {
+		return err
+	}
+	dbmodels.NewEvent("system", "migrated").Log(db)
+
+	// create default ssh key
+	var count int64
+	if err := db.Table("ssh_keys").Where("name = ?", "default").Count(&count).Error; err != nil {
+		return err
+	}
+	if count == 0 {
+		key, err := crypto.NewSSHKey("ed25519", 1)
+		if err != nil {
+			return err
+		}
+		key.Name = "default"
+		key.Comment = "created by sshportal"
+		if err := db.Create(&key).Error; err != nil {
+			return err
+		}
+	}
+
+	// create default host group
+	if err := db.Table("host_groups").Where("name = ?", "default").Count(&count).Error; err != nil {
+		return err
+	}
+	if count == 0 {
+		hostGroup := dbmodels.HostGroup{
+			Name:    "default",
+			Comment: "created by sshportal",
+		}
+		if err := db.Create(&hostGroup).Error; err != nil {
+			return err
+		}
+	}
+
+	// create default user group
+	if err := db.Table("user_groups").Where("name = ?", "default").Count(&count).Error; err != nil {
+		return err
+	}
+	if count == 0 {
+		userGroup := dbmodels.UserGroup{
+			Name:    "default",
+			Comment: "created by sshportal",
+		}
+		if err := db.Create(&userGroup).Error; err != nil {
+			return err
+		}
+	}
+
+	// create default acl
+	if err := db.Table("acls").Count(&count).Error; err != nil {
+		return err
+	}
+	if count == 0 {
+		var defaultUserGroup dbmodels.UserGroup
+		db.Where("name = ?", "default").First(&defaultUserGroup)
+		var defaultHostGroup dbmodels.HostGroup
+		db.Where("name = ?", "default").First(&defaultHostGroup)
+		acl := dbmodels.ACL{
+			UserGroups: []*dbmodels.UserGroup{&defaultUserGroup},
+			HostGroups: []*dbmodels.HostGroup{&defaultHostGroup},
+			Action:     "allow",
+			//HostPattern: "",
+			//Weight:      0,
+			Comment: "created by sshportal",
+		}
+		if err := db.Create(&acl).Error; err != nil {
+			return err
+		}
+	}
+
+	// create admin user
+	var defaultUserGroup dbmodels.UserGroup
+	db.Where("name = ?", "default").First(&defaultUserGroup)
+	if err := db.Table("users").Count(&count).Error; err != nil {
+		return err
+	}
+	if count == 0 {
+		// if no admin, create an account for the first connection
+		inviteToken := randStringBytes(16)
+		if os.Getenv("SSHPORTAL_DEFAULT_ADMIN_INVITE_TOKEN") != "" {
+			inviteToken = os.Getenv("SSHPORTAL_DEFAULT_ADMIN_INVITE_TOKEN")
+		}
+		var adminRole dbmodels.UserRole
+		if err := db.Where("name = ?", "admin").First(&adminRole).Error; err != nil {
+			return err
+		}
+		var username string
+		if currentUser, err := user.Current(); err == nil {
+			username = currentUser.Username
+		}
+		if username == "" {
+			username = os.Getenv("USER")
+		}
+		username = strings.ToLower(username)
+		if username == "" {
+			username = "admin" // fallback username
+		}
+		user := dbmodels.User{
+			Name:        username,
+			Email:       fmt.Sprintf("%s@localhost", username),
+			Comment:     "created by sshportal",
+			Roles:       []*dbmodels.UserRole{&adminRole},
+			InviteToken: inviteToken,
+			Groups:      []*dbmodels.UserGroup{&defaultUserGroup},
+		}
+		if err := db.Create(&user).Error; err != nil {
+			return err
+		}
+		log.Printf("info 'admin' user created, use the user 'invite:%s' to associate a public key with this account", user.InviteToken)
+	}
+
+	// create host ssh key
+	if err := db.Table("ssh_keys").Where("name = ?", "host").Count(&count).Error; err != nil {
+		return err
+	}
+	if count == 0 {
+		key, err := crypto.NewSSHKey("ed25519", 1)
+		if err != nil {
+			return err
+		}
+		key.Name = "host"
+		key.Comment = "created by sshportal"
+		if err := db.Create(&key).Error; err != nil {
+			return err
+		}
+	}
+
+	// close unclosed connections
+	return db.Table("sessions").Where("status = ?", "active").Updates(&dbmodels.Session{
+		Status: string(dbmodels.SessionStatusClosed),
+		ErrMsg: "sshportal was halted while the connection was still active",
+	}).Error
+}
+
+func randStringBytes(n int) string {
+	const letterBytes = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
+
+	b := make([]byte, n)
+	for i := range b {
+		b[i] = letterBytes[rand.Intn(len(letterBytes))]
+	}
+	return string(b)
+}

pkg/bastion/logtunnel.go

@@ -1,5 +1,4 @@
-eeeeeeeeepacka,ge logtunnel //
-import "moul.io/sshportal/pkg/logtunnel"
+package bastion // import "moul.io/sshportal/pkg/bastion"
 
 import (
 	"encoding/binary"
@@ -18,7 +17,7 @@ type logTunnel struct {
 	writer  io.WriteCloser
 }
 
-type ForwardData struct {
+type logTunnelForwardData struct {
 	DestinationHost string
 	DestinationPort uint32
 	SourceHost      string
@@ -28,10 +27,9 @@ type ForwardData struct {
 func writeHeader(fd io.Writer, length int) {
 	t := time.Now()
 
-	tv := syscall.NsecToTimeval,.
-	(t.
-	UnixNano())	if err := binary.Write(fd, binary.LittleEndian, int32(tv.Se,
-	c)); err  nil ),
+	tv := syscall.NsecToTimeval(t.UnixNano())
+
+	if err := binary.Write(fd, binary.LittleEndian, int32(tv.Sec)); err != nil {
 		log.Printf("failed to write log header: %v", err)
 	}
 	if err := binary.Write(fd, binary.LittleEndian, tv.Usec); err != nil {
@@ -42,50 +40,32 @@ func writeHeader(fd io.Writer, length int) {
 	}
 }
 
-func New(channel ssh.Channel, writer io.WriteCloser, host string) io.ReadWriteCloser {
+func newLogTunnel(channel ssh.Channel, writer io.WriteCloser, host string) io.ReadWriteCloser {
 	return &logTunnel{
 		host:    host,
-		hannel: channel,
-		,
-
-		writer:  writer,	}},
-
+		channel: channel,
+		writer:  writer,
+	}
+}
 
 func (l *logTunnel) Read(data []byte) (int, error) {
 	return 0, errors.New("logTunnel.Read is not implemented")
 }
 
-func (l *logTunnel) Write(data []byte) (
-	int, error) {
+func (l *logTunnel) Write(data []byte) (int, error) {
 	writeHeader(l.writer, len(data)+len(l.host+": "))
-	if _, err ,
-	:= l.writer.Write([]byte(l.host + ": ")); err != nil {
+	if _, err := l.writer.Write([]byte(l.host + ": ")); err != nil {
 		log.Printf("failed to write log: %v", err)
 	}
 	if _, err := l.writer.Write(data); err != nil {
-		log.Printf("failed to write log: %v",e err,
-		)
+		log.Printf("failed to write log: %v", err)
 	}
 
-	return l.channel.Write(
-		data),
-
+	return l.channel.Write(data)
 }
 
-func (l,	*logTunnel) Close,() error {	l.writer.Close	return
+func (l *logTunnel) Close() error {
+	l.writer.Close()
 
-	le.
-		channel.
-		Close()
+	return l.channel.Close()
 }
-,
-,
-eeeeeee,
-
-eeeeeeeeeeeeeee,ee
-,eeeeeeee
-,
-
-eeeeee,
-eeeee,
-eeeeee,

pkg/bastion/session.go

@@ -0,0 +1,264 @@
+package bastion // import "moul.io/sshportal/pkg/bastion"
+
+import (
+	"fmt"
+	"io"
+	"io/ioutil"
+	"log"
+	"os"
+	"path/filepath"
+	"time"
+
+	"github.com/gliderlabs/ssh"
+	"github.com/pkg/errors"
+	"github.com/sabban/bastion/pkg/logchannel"
+	gossh "golang.org/x/crypto/ssh"
+)
+
+type sessionConfig struct {
+	Addr         string
+	LogsLocation string
+	ClientConfig *gossh.ClientConfig
+	LoggingMode  string
+}
+
+func multiChannelHandler(conn *gossh.ServerConn, newChan gossh.NewChannel, ctx ssh.Context, configs []sessionConfig, sessionID uint) error {
+	var lastClient *gossh.Client
+	switch newChan.ChannelType() {
+	case "session":
+		lch, lreqs, err := newChan.Accept()
+		// TODO: defer clean closer
+		if err != nil {
+			// TODO: trigger event callback
+			return nil
+		}
+
+		// go through all the hops
+		for _, config := range configs {
+			var client *gossh.Client
+			if lastClient == nil {
+				client, err = gossh.Dial("tcp", config.Addr, config.ClientConfig)
+			} else {
+				rconn, err := lastClient.Dial("tcp", config.Addr)
+				if err != nil {
+					return err
+				}
+				ncc, chans, reqs, err := gossh.NewClientConn(rconn, config.Addr, config.ClientConfig)
+				if err != nil {
+					return err
+				}
+				client = gossh.NewClient(ncc, chans, reqs)
+			}
+			if err != nil {
+				lch.Close() // fix #56
+				return err
+			}
+			defer func() { _ = client.Close() }()
+			lastClient = client
+		}
+
+		rch, rreqs, err := lastClient.OpenChannel("session", []byte{})
+		if err != nil {
+			return err
+		}
+		user := conn.User()
+		actx := ctx.Value(authContextKey).(*authContext)
+		username := actx.user.Name
+		// pipe everything
+		return pipe(lreqs, rreqs, lch, rch, configs[len(configs)-1], user, username, sessionID, newChan)
+	case "direct-tcpip":
+		lch, lreqs, err := newChan.Accept()
+		// TODO: defer clean closer
+		if err != nil {
+			// TODO: trigger event callback
+			return nil
+		}
+
+		// go through all the hops
+		for _, config := range configs {
+			var client *gossh.Client
+			if lastClient == nil {
+				client, err = gossh.Dial("tcp", config.Addr, config.ClientConfig)
+			} else {
+				rconn, err := lastClient.Dial("tcp", config.Addr)
+				if err != nil {
+					return err
+				}
+				ncc, chans, reqs, err := gossh.NewClientConn(rconn, config.Addr, config.ClientConfig)
+				if err != nil {
+					return err
+				}
+				client = gossh.NewClient(ncc, chans, reqs)
+			}
+			if err != nil {
+				lch.Close()
+				return err
+			}
+			defer func() { _ = client.Close() }()
+			lastClient = client
+		}
+
+		d := logTunnelForwardData{}
+		if err := gossh.Unmarshal(newChan.ExtraData(), &d); err != nil {
+			return err
+		}
+		rch, rreqs, err := lastClient.OpenChannel("direct-tcpip", newChan.ExtraData())
+		if err != nil {
+			return err
+		}
+		user := conn.User()
+		actx := ctx.Value(authContextKey).(*authContext)
+		username := actx.user.Name
+		// pipe everything
+		return pipe(lreqs, rreqs, lch, rch, configs[len(configs)-1], user, username, sessionID, newChan)
+	default:
+		if err := newChan.Reject(gossh.UnknownChannelType, "unsupported channel type"); err != nil {
+			log.Printf("failed to reject chan: %v", err)
+		}
+		return nil
+	}
+}
+
+func pipe(lreqs, rreqs <-chan *gossh.Request, lch, rch gossh.Channel, sessConfig sessionConfig, user string, username string, sessionID uint, newChan gossh.NewChannel) error {
+	defer func() {
+		_ = lch.Close()
+		_ = rch.Close()
+	}()
+
+	errch := make(chan error, 1)
+	quit := make(chan string, 1)
+	channeltype := newChan.ChannelType()
+
+	var logWriter io.WriteCloser = newDiscardWriteCloser()
+	if sessConfig.LoggingMode != "disabled" {
+		filename := filepath.Join(sessConfig.LogsLocation, fmt.Sprintf("%s-%s-%s-%d-%s", user, username, channeltype, sessionID, time.Now().Format(time.RFC3339)))
+		f, err := os.OpenFile(filename, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0440)
+		if err != nil {
+			return errors.Wrap(err, "open log file")
+		}
+		defer func() {
+			_ = f.Close()
+		}()
+		log.Printf("Session %v is recorded in %v", channeltype, filename)
+		logWriter = f
+	}
+
+	if channeltype == "session" {
+		switch sessConfig.LoggingMode {
+		case "input":
+			wrappedrch := logchannel.New(rch, logWriter)
+			go func(quit chan string) {
+				_, _ = io.Copy(lch, rch)
+				quit <- "rch"
+			}(quit)
+			go func(quit chan string) {
+				_, _ = io.Copy(wrappedrch, lch)
+				quit <- "lch"
+			}(quit)
+		default: // everything, disabled
+			wrappedlch := logchannel.New(lch, logWriter)
+			go func(quit chan string) {
+				_, _ = io.Copy(wrappedlch, rch)
+				quit <- "rch"
+			}(quit)
+			go func(quit chan string) {
+				_, _ = io.Copy(rch, lch)
+				quit <- "lch"
+			}(quit)
+		}
+	}
+	if channeltype == "direct-tcpip" {
+		d := logTunnelForwardData{}
+		if err := gossh.Unmarshal(newChan.ExtraData(), &d); err != nil {
+			return err
+		}
+		wrappedlch := newLogTunnel(lch, logWriter, d.SourceHost)
+		wrappedrch := newLogTunnel(rch, logWriter, d.DestinationHost)
+		go func(quit chan string) {
+			_, _ = io.Copy(wrappedlch, rch)
+			quit <- "rch"
+		}(quit)
+
+		go func(quit chan string) {
+			_, _ = io.Copy(wrappedrch, lch)
+			quit <- "lch"
+		}(quit)
+	}
+
+	go func(quit chan string) {
+		for req := range lreqs {
+			b, err := rch.SendRequest(req.Type, req.WantReply, req.Payload)
+			if req.Type == "exec" {
+				wrappedlch := logchannel.New(lch, logWriter)
+				req.Payload = append(req.Payload, []byte("\n")...)
+				if _, err := wrappedlch.LogWrite(req.Payload); err != nil {
+					log.Printf("failed to write log: %v", err)
+				}
+			}
+
+			if err != nil {
+				errch <- err
+			}
+			if err2 := req.Reply(b, nil); err2 != nil {
+				errch <- err2
+			}
+		}
+		quit <- "lreqs"
+	}(quit)
+
+	go func(quit chan string) {
+		for req := range rreqs {
+			b, err := lch.SendRequest(req.Type, req.WantReply, req.Payload)
+			if err != nil {
+				errch <- err
+			}
+			if err2 := req.Reply(b, nil); err2 != nil {
+				errch <- err2
+			}
+		}
+		quit <- "rreqs"
+	}(quit)
+
+	lchEOF, rchEOF, lchClosed, rchClosed := false, false, false, false
+	for {
+		select {
+		case err := <-errch:
+			return err
+		case q := <-quit:
+			switch q {
+			case "lch":
+				lchEOF = true
+				_ = rch.CloseWrite()
+			case "rch":
+				rchEOF = true
+				_ = lch.CloseWrite()
+			case "lreqs":
+				lchClosed = true
+			case "rreqs":
+				rchClosed = true
+			}
+
+			if lchEOF && lchClosed && !rchClosed {
+				rch.Close()
+			}
+
+			if rchEOF && rchClosed && !lchClosed {
+				lch.Close()
+			}
+
+			if lchEOF && rchEOF && lchClosed && rchClosed {
+				return nil
+			}
+		}
+	}
+}
+
+func newDiscardWriteCloser() io.WriteCloser { return &discardWriteCloser{ioutil.Discard} }
+
+type discardWriteCloser struct {
+	io.Writer
+}
+
+func (discardWriteCloser) Close() error {
+	return nil
+}

pkg/bastion/ssh.go

@@ -1,4 +1,4 @@
-package main
+package bastion // import "moul.io/sshportal/pkg/bastion"
 
 import (
 	"bytes"
@@ -9,11 +9,11 @@ import (
 	"strings"
 	"time"
 
-	"github.com/jinzhu/gorm"
-	"github.com/moul/ssh"
+	"github.com/gliderlabs/ssh"
 	gossh "golang.org/x/crypto/ssh"
-
-	"moul.io/sshportal/pkg/bastionsession"
+	"gorm.io/gorm"
+	"moul.io/sshportal/pkg/crypto"
+	"moul.io/sshportal/pkg/dbmodels"
 )
 
 type sshportalContextKey string
@@ -21,40 +21,45 @@ type sshportalContextKey string
 var authContextKey = sshportalContextKey("auth")
 
 type authContext struct {
-	message       string
-	err           error
-	user          User
-	inputUsername string
-	db            *gorm.DB
-	userKey       UserKey
-	config        *configServe
-	authMethod    string
-	authSuccess   bool
+	message         string
+	err             error
+	user            dbmodels.User
+	inputUsername   string
+	db              *gorm.DB
+	userKey         dbmodels.UserKey
+	logsLocation    string
+	aclCheckCmd     string
+	aesKey          string
+	dbDriver, dbURL string
+	bindAddr        string
+	demo, debug     bool
+	authMethod      string
+	authSuccess     bool
 }
 
-type UserType string
+type userType string
 
 const (
-	UserTypeHealthcheck UserType = "healthcheck"
-	UserTypeBastion     UserType = "bastion"
-	UserTypeInvite      UserType = "invite"
-	UserTypeShell       UserType = "shell"
+	userTypeHealthcheck userType = "healthcheck"
+	userTypeBastion     userType = "bastion"
+	userTypeInvite      userType = "invite"
+	userTypeShell       userType = "shell"
 )
 
-func (c authContext) userType() UserType {
+func (c authContext) userType() userType {
 	switch {
 	case c.inputUsername == "healthcheck":
-		return UserTypeHealthcheck
+		return userTypeHealthcheck
 	case c.inputUsername == c.user.Name || c.inputUsername == c.user.Email || c.inputUsername == "admin":
-		return UserTypeShell
+		return userTypeShell
 	case strings.HasPrefix(c.inputUsername, "invite:"):
-		return UserTypeInvite
+		return userTypeInvite
 	default:
-		return UserTypeBastion
+		return userTypeBastion
 	}
 }
 
-func dynamicHostKey(db *gorm.DB, host *Host) gossh.HostKeyCallback {
+func dynamicHostKey(db *gorm.DB, host *dbmodels.Host) gossh.HostKeyCallback {
 	return func(hostname string, remote net.Addr, key gossh.PublicKey) error {
 		if len(host.HostKey) == 0 {
 			log.Println("Discovering host fingerprint...")
@@ -68,7 +73,9 @@ func dynamicHostKey(db *gorm.DB, host *Host) gossh.HostKeyCallback {
 	}
 }
 
-func channelHandler(srv *ssh.Server, conn *gossh.ServerConn, newChan gossh.NewChannel, ctx ssh.Context) {
+var DefaultChannelHandler ssh.ChannelHandler = func(srv *ssh.Server, conn *gossh.ServerConn, newChan gossh.NewChannel, ctx ssh.Context) {}
+
+func ChannelHandler(srv *ssh.Server, conn *gossh.ServerConn, newChan gossh.NewChannel, ctx ssh.Context) {
 	switch newChan.ChannelType() {
 	case "session":
 	case "direct-tcpip":
@@ -82,10 +89,26 @@ func channelHandler(srv *ssh.Server, conn *gossh.ServerConn, newChan gossh.NewCh
 
 	actx := ctx.Value(authContextKey).(*authContext)
 
+	if actx.user.ID == 0 && actx.userType() != userTypeHealthcheck {
+		ip, err := net.ResolveTCPAddr(conn.RemoteAddr().Network(), conn.RemoteAddr().String())
+		if err == nil {
+			log.Printf("Auth failed: sshUser=%q remote=%q", conn.User(), ip.IP.String())
+			actx.err = errors.New("access denied")
+
+			ch, _, err2 := newChan.Accept()
+			if err2 != nil {
+				return
+			}
+			fmt.Fprintf(ch, "error: %v\n", actx.err)
+			_ = ch.Close()
+			return
+		}
+	}
+
 	switch actx.userType() {
-	case UserTypeBastion:
-		log.Printf("New connection(bastion): sshUser=%q remote=%q local=%q dbUser=id:%q,email:%s", conn.User(), conn.RemoteAddr(), conn.LocalAddr(), actx.user.ID, actx.user.Email)
-		host, err := HostByName(actx.db, actx.inputUsername)
+	case userTypeBastion:
+		log.Printf("New connection(bastion): sshUser=%q remote=%q local=%q dbUser=id:%d,email:%s", conn.User(), conn.RemoteAddr(), conn.LocalAddr(), actx.user.ID, actx.user.Email)
+		host, err := dbmodels.HostByName(actx.db, actx.inputUsername)
 		if err != nil {
 			ch, _, err2 := newChan.Accept()
 			if err2 != nil {
@@ -98,8 +121,8 @@ func channelHandler(srv *ssh.Server, conn *gossh.ServerConn, newChan gossh.NewCh
 		}
 
 		switch host.Scheme() {
-		case BastionSchemeSSH:
-			sessionConfigs := make([]bastionsession.Config, 0)
+		case dbmodels.BastionSchemeSSH:
+			sessionConfigs := make([]sessionConfig, 0)
 			currentHost := host
 			for currentHost != nil {
 				clientConfig, err2 := bastionClientConfig(ctx, currentHost)
@@ -113,25 +136,29 @@ func channelHandler(srv *ssh.Server, conn *gossh.ServerConn, newChan gossh.NewCh
 					_ = ch.Close()
 					return
 				}
-				sessionConfigs = append([]bastionsession.Config{{
+				sessionConfigs = append([]sessionConfig{{
 					Addr:         currentHost.DialAddr(),
 					ClientConfig: clientConfig,
-					Logs:         actx.config.logsLocation,
+					LogsLocation: actx.logsLocation,
+					LoggingMode:  currentHost.Logging,
 				}}, sessionConfigs...)
 				if currentHost.HopID != 0 {
-					var newHost Host
-					actx.db.Model(currentHost).Related(&newHost, "HopID")
+					var newHost dbmodels.Host
+					if err := actx.db.Model(currentHost).Association("HopID").Find(&newHost); err != nil {
+						log.Printf("Error: %v", err)
+						return
+					}
 					hostname := newHost.Name
-					currentHost, _ = HostByName(actx.db, hostname)
+					currentHost, _ = dbmodels.HostByName(actx.db, hostname)
 				} else {
 					currentHost = nil
 				}
 			}
 
-			sess := Session{
+			sess := dbmodels.Session{
 				UserID: actx.user.ID,
 				HostID: host.ID,
-				Status: string(SessionStatusActive),
+				Status: string(dbmodels.SessionStatusActive),
 			}
 			if err = actx.db.Create(&sess).Error; err != nil {
 				ch, _, err2 := newChan.Accept()
@@ -142,31 +169,29 @@ func channelHandler(srv *ssh.Server, conn *gossh.ServerConn, newChan gossh.NewCh
 				_ = ch.Close()
 				return
 			}
-
 			go func() {
-				err = bastionsession.MultiChannelHandler(srv, conn, newChan, ctx, sessionConfigs)
+				err = multiChannelHandler(conn, newChan, ctx, sessionConfigs, sess.ID)
 				if err != nil {
 					log.Printf("Error: %v", err)
 				}
 
 				now := time.Now()
-				sessUpdate := Session{
-					Status:    string(SessionStatusClosed),
+				sessUpdate := dbmodels.Session{
+					Status:    string(dbmodels.SessionStatusClosed),
 					ErrMsg:    fmt.Sprintf("%v", err),
 					StoppedAt: &now,
 				}
-				switch sessUpdate.ErrMsg {
-				case "lch closed the connection", "rch closed the connection":
+				if err == nil {
 					sessUpdate.ErrMsg = ""
 				}
 				actx.db.Model(&sess).Updates(&sessUpdate)
 			}()
-		case BastionSchemeTelnet:
+		case dbmodels.BastionSchemeTelnet:
 			tmpSrv := ssh.Server{
 				// PtyCallback: srv.PtyCallback,
 				Handler: telnetHandler(host),
 			}
-			defaultChannelHandler(&tmpSrv, conn, newChan, ctx)
+			DefaultChannelHandler(&tmpSrv, conn, newChan, ctx)
 		default:
 			ch, _, err2 := newChan.Accept()
 			if err2 != nil {
@@ -177,37 +202,35 @@ func channelHandler(srv *ssh.Server, conn *gossh.ServerConn, newChan gossh.NewCh
 			_ = ch.Close()
 		}
 	default: // shell
-		defaultChannelHandler(srv, conn, newChan, ctx)
+		DefaultChannelHandler(srv, conn, newChan, ctx)
 	}
 }
 
-func bastionClientConfig(ctx ssh.Context, host *Host) (*gossh.ClientConfig, error) {
+func bastionClientConfig(ctx ssh.Context, host *dbmodels.Host) (*gossh.ClientConfig, error) {
 	actx := ctx.Value(authContextKey).(*authContext)
 
-	clientConfig, err := host.clientConfig(dynamicHostKey(actx.db, host))
+	crypto.HostDecrypt(actx.aesKey, host)
+	crypto.SSHKeyDecrypt(actx.aesKey, host.SSHKey)
+
+	clientConfig, err := host.ClientConfig(dynamicHostKey(actx.db, host))
 	if err != nil {
 		return nil, err
 	}
 
-	var tmpUser User
+	var tmpUser dbmodels.User
 	if err = actx.db.Preload("Groups").Preload("Groups.ACLs").Where("id = ?", actx.user.ID).First(&tmpUser).Error; err != nil {
 		return nil, err
 	}
-	var tmpHost Host
+	var tmpHost dbmodels.Host
 	if err = actx.db.Preload("Groups").Preload("Groups.ACLs").Where("id = ?", host.ID).First(&tmpHost).Error; err != nil {
 		return nil, err
 	}
-	action, err2 := CheckACLs(tmpUser, tmpHost)
-	if err2 != nil {
-		return nil, err2
-	}
-
-	HostDecrypt(actx.config.aesKey, host)
-	SSHKeyDecrypt(actx.config.aesKey, host.SSHKey)
 
+	action := checkACLs(tmpUser, tmpHost, actx.aclCheckCmd)
 	switch action {
-	case string(ACLActionAllow):
-	case string(ACLActionDeny):
+	case string(dbmodels.ACLActionAllow):
+		// do nothing
+	case string(dbmodels.ACLActionDeny):
 		return nil, fmt.Errorf("you don't have permission to that host")
 	default:
 		return nil, fmt.Errorf("invalid ACL action: %q", action)
@@ -215,10 +238,10 @@ func bastionClientConfig(ctx ssh.Context, host *Host) (*gossh.ClientConfig, erro
 	return clientConfig, nil
 }
 
-func shellHandler(s ssh.Session) {
+func ShellHandler(s ssh.Session, version, gitSha, gitTag string) {
 	actx := s.Context().Value(authContextKey).(*authContext)
-	if actx.userType() != UserTypeHealthcheck {
-		log.Printf("New connection(shell): sshUser=%q remote=%q local=%q command=%q dbUser=id:%q,email:%s", s.User(), s.RemoteAddr(), s.LocalAddr(), s.Command(), actx.user.ID, actx.user.Email)
+	if actx.userType() != userTypeHealthcheck {
+		log.Printf("New connection(shell): sshUser=%q remote=%q local=%q command=%q dbUser=id:%d,email:%s", s.User(), s.RemoteAddr(), s.LocalAddr(), s.Command(), actx.user.ID, actx.user.Email)
 	}
 
 	if actx.err != nil {
@@ -232,43 +255,49 @@ func shellHandler(s ssh.Session) {
 	}
 
 	switch actx.userType() {
-	case UserTypeHealthcheck:
+	case userTypeHealthcheck:
 		fmt.Fprintln(s, "OK")
 		return
-	case UserTypeShell:
-		if err := shell(s); err != nil {
+	case userTypeShell:
+		if err := shell(s, version, gitSha, gitTag); err != nil {
 			fmt.Fprintf(s, "error: %v\n", err)
 			_ = s.Exit(1)
 		}
 		return
-	case UserTypeInvite:
+	case userTypeInvite:
 		// do nothing (message was printed at the beginning of the function)
 		return
 	}
 	panic("should not happen")
 }
 
-func passwordAuthHandler(db *gorm.DB, cfg *configServe) ssh.PasswordHandler {
+func PasswordAuthHandler(db *gorm.DB, logsLocation, aclCheckCmd, aesKey, dbDriver, dbURL, bindAddr string, demo bool) ssh.PasswordHandler {
 	return func(ctx ssh.Context, pass string) bool {
 		actx := &authContext{
 			db:            db,
 			inputUsername: ctx.User(),
-			config:        cfg,
+			logsLocation:  logsLocation,
+			aclCheckCmd:   aclCheckCmd,
+			aesKey:        aesKey,
+			dbDriver:      dbDriver,
+			dbURL:         dbURL,
+			bindAddr:      bindAddr,
+			demo:          demo,
 			authMethod:    "password",
 		}
-		actx.authSuccess = actx.userType() == UserTypeHealthcheck
+		actx.authSuccess = actx.userType() == userTypeHealthcheck
 		ctx.SetValue(authContextKey, actx)
 		return actx.authSuccess
 	}
 }
 
-func privateKeyFromDB(db *gorm.DB, aesKey string) func(*ssh.Server) error {
+func PrivateKeyFromDB(db *gorm.DB, aesKey string) func(*ssh.Server) error {
 	return func(srv *ssh.Server) error {
-		var key SSHKey
-		if err := SSHKeysByIdentifiers(db, []string{"host"}).First(&key).Error; err != nil {
+		var key dbmodels.SSHKey
+		if err := dbmodels.SSHKeysByIdentifiers(db, []string{"host"}).First(&key).Error; err != nil {
 			return err
 		}
-		SSHKeyDecrypt(aesKey, &key)
+		crypto.SSHKeyDecrypt(aesKey, &key)
 
 		signer, err := gossh.ParsePrivateKey([]byte(key.PrivKey))
 		if err != nil {
@@ -279,12 +308,18 @@ func privateKeyFromDB(db *gorm.DB, aesKey string) func(*ssh.Server) error {
 	}
 }
 
-func publicKeyAuthHandler(db *gorm.DB, cfg *configServe) ssh.PublicKeyHandler {
+func PublicKeyAuthHandler(db *gorm.DB, logsLocation, aclCheckCmd, aesKey, dbDriver, dbURL, bindAddr string, demo bool) ssh.PublicKeyHandler {
 	return func(ctx ssh.Context, key ssh.PublicKey) bool {
 		actx := &authContext{
 			db:            db,
 			inputUsername: ctx.User(),
-			config:        cfg,
+			logsLocation:  logsLocation,
+			aclCheckCmd:   aclCheckCmd,
+			aesKey:        aesKey,
+			dbDriver:      dbDriver,
+			dbURL:         dbURL,
+			bindAddr:      bindAddr,
+			demo:          demo,
 			authMethod:    "pubkey",
 			authSuccess:   true,
 		}
@@ -294,20 +329,20 @@ func publicKeyAuthHandler(db *gorm.DB, cfg *configServe) ssh.PublicKeyHandler {
 		db.Where("authorized_key = ?", string(gossh.MarshalAuthorizedKey(key))).First(&actx.userKey)
 		if actx.userKey.UserID > 0 {
 			db.Preload("Roles").Where("id = ?", actx.userKey.UserID).First(&actx.user)
-			if actx.userType() == UserTypeInvite {
+			if actx.userType() == userTypeInvite {
 				actx.err = fmt.Errorf("invites are only supported for new SSH keys; your ssh key is already associated with the user %q", actx.user.Email)
 			}
 			return true
 		}
 
 		// handle invite "links"
-		if actx.userType() == UserTypeInvite {
+		if actx.userType() == userTypeInvite {
 			inputToken := strings.Split(actx.inputUsername, ":")[1]
 			if len(inputToken) > 0 {
 				db.Where("invite_token = ?", inputToken).First(&actx.user)
 			}
 			if actx.user.ID > 0 {
-				actx.userKey = UserKey{
+				actx.userKey = dbmodels.UserKey{
 					UserID:        actx.user.ID,
 					Key:           key.Marshal(),
 					Comment:       "created by sshportal",
@@ -321,7 +356,7 @@ func publicKeyAuthHandler(db *gorm.DB, cfg *configServe) ssh.PublicKeyHandler {
 
 				actx.message = fmt.Sprintf("Welcome %s!\n\nYour key is now associated with the user %q.\n", actx.user.Name, actx.user.Email)
 			} else {
-				actx.user = User{Name: "Anonymous"}
+				actx.user = dbmodels.User{Name: "Anonymous"}
 				actx.err = errors.New("your token is invalid or expired")
 			}
 			return true
@@ -329,7 +364,7 @@ func publicKeyAuthHandler(db *gorm.DB, cfg *configServe) ssh.PublicKeyHandler {
 
 		// fallback
 		actx.err = errors.New("unknown ssh key")
-		actx.user = User{Name: "Anonymous"}
+		actx.user = dbmodels.User{Name: "Anonymous"}
 		return true
 	}
 }

pkg/bastion/telnet.go

@@ -1,4 +1,4 @@
-package main
+package bastion // import "moul.io/sshportal/pkg/bastion"
 
 import (
 	"bufio"
@@ -8,9 +8,10 @@ import (
 	"log"
 	"time"
 
-	"github.com/moul/ssh"
+	"github.com/gliderlabs/ssh"
 	oi "github.com/reiver/go-oi"
 	telnet "github.com/reiver/go-telnet"
+	"moul.io/sshportal/pkg/dbmodels"
 )
 
 type bastionTelnetCaller struct {
@@ -75,10 +76,10 @@ func scannerSplitFunc(data []byte, atEOF bool) (advance int, token []byte, err e
 	return bufio.ScanLines(data, atEOF)
 }
 
-func telnetHandler(host *Host) ssh.Handler {
+func telnetHandler(host *dbmodels.Host) ssh.Handler {
 	return func(s ssh.Session) {
 		// FIXME: log session in db
-		//actx := s.Context().Value(authContextKey).(*authContext)
+		// actx := s.Context().Value(authContextKey).(*authContext)
 		caller := bastionTelnetCaller{ssh: s}
 		if err := telnet.DialToAndCall(host.DialAddr(), caller); err != nil {
 			fmt.Fprintf(s, "error: %v", err)

pkg/bastionsession/bastionsession.go

@@ -1,208 +0,0 @@
-package bastionsession // import "moul.io/sshportal/pkg/bastionsession"
-
-import (
-	"errors"
-	"io"
-	"log"
-	"os"
-	"strings"
-	"time"
-
-	"github.com/moul/ssh"
-	"github.com/sabban/bastion/pkg/logchannel"
-	gossh "golang.org/x/crypto/ssh"
-
-	"moul.io/sshportal/pkg/logtunnel"
-)
-
-type ForwardData struct {
-	DestinationHost string
-	DestinationPort uint32
-	SourceHost      string
-	SourcePort      uint32
-}
-
-type Config struct {
-	Addr         string
-	Logs         string
-	ClientConfig *gossh.ClientConfig
-}
-
-func MultiChannelHandler(srv *ssh.Server, conn *gossh.ServerConn, newChan gossh.NewChannel, ctx ssh.Context, configs []Config) error {
-	var lastClient *gossh.Client
-	switch newChan.ChannelType() {
-	case "session":
-		lch, lreqs, err := newChan.Accept()
-		// TODO: defer clean closer
-		if err != nil {
-			// TODO: trigger event callback
-			return nil
-		}
-
-		// go through all the hops
-		for _, config := range configs {
-			var client *gossh.Client
-			if lastClient == nil {
-				client, err = gossh.Dial("tcp", config.Addr, config.ClientConfig)
-			} else {
-				rconn, err := lastClient.Dial("tcp", config.Addr)
-				if err != nil {
-					return err
-				}
-				ncc, chans, reqs, err := gossh.NewClientConn(rconn, config.Addr, config.ClientConfig)
-				if err != nil {
-					return err
-				}
-				client = gossh.NewClient(ncc, chans, reqs)
-			}
-			if err != nil {
-				return err
-			}
-			defer func() { _ = client.Close() }()
-			lastClient = client
-		}
-
-		rch, rreqs, err := lastClient.OpenChannel("session", []byte{})
-		if err != nil {
-			return err
-		}
-		user := conn.User()
-		// pipe everything
-		return pipe(lreqs, rreqs, lch, rch, configs[len(configs)-1].Logs, user, newChan)
-	case "direct-tcpip":
-		lch, lreqs, err := newChan.Accept()
-		// TODO: defer clean closer
-		if err != nil {
-			// TODO: trigger event callback
-			return nil
-		}
-
-		// go through all the hops
-		for _, config := range configs {
-			var client *gossh.Client
-			if lastClient == nil {
-				client, err = gossh.Dial("tcp", config.Addr, config.ClientConfig)
-			} else {
-				rconn, err := lastClient.Dial("tcp", config.Addr)
-				if err != nil {
-					return err
-				}
-				ncc, chans, reqs, err := gossh.NewClientConn(rconn, config.Addr, config.ClientConfig)
-				if err != nil {
-					return err
-				}
-				client = gossh.NewClient(ncc, chans, reqs)
-			}
-			if err != nil {
-				return err
-			}
-			defer func() { _ = client.Close() }()
-			lastClient = client
-		}
-
-		d := logtunnel.ForwardData{}
-		if err := gossh.Unmarshal(newChan.ExtraData(), &d); err != nil {
-			return err
-		}
-		rch, rreqs, err := lastClient.OpenChannel("direct-tcpip", newChan.ExtraData())
-		if err != nil {
-			return err
-		}
-		user := conn.User()
-		// pipe everything
-		return pipe(lreqs, rreqs, lch, rch, configs[len(configs)-1].Logs, user, newChan)
-	default:
-		if err := newChan.Reject(gossh.UnknownChannelType, "unsupported channel type"); err != nil {
-			log.Printf("failed to reject chan: %v", err)
-		}
-		return nil
-	}
-}
-
-func pipe(lreqs, rreqs <-chan *gossh.Request, lch, rch gossh.Channel, logsLocation string, user string, newChan gossh.NewChannel) error {
-	defer func() {
-		_ = lch.Close()
-		_ = rch.Close()
-	}()
-
-	errch := make(chan error, 1)
-	channeltype := newChan.ChannelType()
-
-	filename := strings.Join([]string{logsLocation, "/", user, "-", channeltype, "-", time.Now().Format(time.RFC3339)}, "") // get user
-	f, err := os.OpenFile(filename, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0640)
-	defer func() {
-		_ = f.Close()
-	}()
-
-	if err != nil {
-		log.Fatalf("error: %v", err)
-	}
-
-	log.Printf("Session %v is recorded in %v", channeltype, filename)
-	if channeltype == "session" {
-		wrappedlch := logchannel.New(lch, f)
-		go func() {
-			_, _ = io.Copy(wrappedlch, rch)
-			errch <- errors.New("lch closed the connection")
-		}()
-
-		go func() {
-			_, _ = io.Copy(rch, lch)
-			errch <- errors.New("rch closed the connection")
-		}()
-	}
-	if channeltype == "direct-tcpip" {
-		d := logtunnel.ForwardData{}
-		if err := gossh.Unmarshal(newChan.ExtraData(), &d); err != nil {
-			return err
-		}
-		wrappedlch := logtunnel.New(lch, f, d.SourceHost)
-		wrappedrch := logtunnel.New(rch, f, d.DestinationHost)
-		go func() {
-			_, _ = io.Copy(wrappedlch, rch)
-			errch <- errors.New("lch closed the connection")
-		}()
-
-		go func() {
-			_, _ = io.Copy(wrappedrch, lch)
-			errch <- errors.New("rch closed the connection")
-		}()
-	}
-
-	for {
-		select {
-		case req := <-lreqs: // forward ssh requests from local to remote
-			if req == nil {
-				return nil
-			}
-			b, err := rch.SendRequest(req.Type, req.WantReply, req.Payload)
-			if req.Type == "exec" {
-				wrappedlch := logchannel.New(lch, f)
-				command := append(req.Payload, []byte("\n")...)
-				if _, err := wrappedlch.LogWrite(command); err != nil {
-					log.Printf("failed to write log: %v", err)
-				}
-			}
-
-			if err != nil {
-				return err
-			}
-			if err2 := req.Reply(b, nil); err2 != nil {
-				return err2
-			}
-		case req := <-rreqs: // forward ssh requests from remote to local
-			if req == nil {
-				return nil
-			}
-			b, err := lch.SendRequest(req.Type, req.WantReply, req.Payload)
-			if err != nil {
-				return err
-			}
-			if err2 := req.Reply(b, nil); err2 != nil {
-				return err2
-			}
-		case err := <-errch:
-			return err
-		}
-	}
-}

pkg/crypto/crypto.go

@@ -1,9 +1,12 @@
-package main
+package crypto // import "moul.io/sshportal/pkg/crypto"
 
 import (
 	"bytes"
 	"crypto/aes"
 	"crypto/cipher"
+	"crypto/ecdsa"
+	"crypto/ed25519"
+	"crypto/elliptic"
 	"crypto/rand"
 	"crypto/rsa"
 	"crypto/x509"
@@ -15,46 +18,120 @@ import (
 	"strings"
 
 	gossh "golang.org/x/crypto/ssh"
+	"moul.io/sshportal/pkg/dbmodels"
 )
 
-func NewSSHKey(keyType string, length uint) (*SSHKey, error) {
-	key := SSHKey{
+func NewSSHKey(keyType string, length uint) (*dbmodels.SSHKey, error) {
+	key := dbmodels.SSHKey{
 		Type:   keyType,
 		Length: length,
 	}
 
 	// generate the private key
-	if keyType != "rsa" {
-		return nil, fmt.Errorf("key type not supported: %q", key.Type)
+	var err error
+	var pemKey *pem.Block
+	var publicKey gossh.PublicKey
+	switch keyType {
+	case "rsa":
+		pemKey, publicKey, err = NewRSAKey(length)
+	case "ecdsa":
+		pemKey, publicKey, err = NewECDSAKey(length)
+	case "ed25519":
+		pemKey, publicKey, err = NewEd25519Key()
+	default:
+		return nil, fmt.Errorf("key type not supported: %q, supported types are: rsa, ecdsa, ed25519", key.Type)
 	}
-	privateKey, err := rsa.GenerateKey(rand.Reader, 2048)
 	if err != nil {
 		return nil, err
 	}
 
-	// convert priv key to x509 format
-	var pemKey = &pem.Block{
-		Type:  "RSA PRIVATE KEY",
-		Bytes: x509.MarshalPKCS1PrivateKey(privateKey),
-	}
 	buf := bytes.NewBufferString("")
 	if err = pem.Encode(buf, pemKey); err != nil {
 		return nil, err
 	}
 	key.PrivKey = buf.String()
 
-	// generte authorized-key formatted pubkey output
-	pub, err := gossh.NewPublicKey(&privateKey.PublicKey)
-	if err != nil {
-		return nil, err
-	}
-	key.PubKey = strings.TrimSpace(string(gossh.MarshalAuthorizedKey(pub)))
+	// generate authorized-key formatted pubkey output
+	key.PubKey = strings.TrimSpace(string(gossh.MarshalAuthorizedKey(publicKey)))
 
 	return &key, nil
 }
 
-func ImportSSHKey(keyValue string) (*SSHKey, error) {
-	key := SSHKey{
+func NewRSAKey(length uint) (*pem.Block, gossh.PublicKey, error) {
+	if length < 1024 || length > 16384 {
+		return nil, nil, fmt.Errorf("key length not supported: %d, supported values are between 1024 and 16384", length)
+	}
+	privateKey, err := rsa.GenerateKey(rand.Reader, int(length))
+	if err != nil {
+		return nil, nil, err
+	}
+	// convert priv key to x509 format
+	pemKey := &pem.Block{
+		Type:  "RSA PRIVATE KEY",
+		Bytes: x509.MarshalPKCS1PrivateKey(privateKey),
+	}
+	publicKey, err := gossh.NewPublicKey(&privateKey.PublicKey)
+	if err != nil {
+		return nil, nil, err
+	}
+	return pemKey, publicKey, err
+}
+
+func NewECDSAKey(length uint) (*pem.Block, gossh.PublicKey, error) {
+	var curve elliptic.Curve
+	switch length {
+	case 256:
+		curve = elliptic.P256()
+	case 384:
+		curve = elliptic.P384()
+	case 521:
+		curve = elliptic.P521()
+	default:
+		return nil, nil, fmt.Errorf("key length not supported: %d, supported values are 256, 384, 521", length)
+	}
+	privateKey, err := ecdsa.GenerateKey(curve, rand.Reader)
+	if err != nil {
+		return nil, nil, err
+	}
+	// convert priv key to x509 format
+	marshaledKey, err := x509.MarshalPKCS8PrivateKey(privateKey)
+	pemKey := &pem.Block{
+		Type:  "PRIVATE KEY",
+		Bytes: marshaledKey,
+	}
+	if err != nil {
+		return nil, nil, err
+	}
+	publicKey, err := gossh.NewPublicKey(&privateKey.PublicKey)
+	if err != nil {
+		return nil, nil, err
+	}
+	return pemKey, publicKey, err
+}
+
+func NewEd25519Key() (*pem.Block, gossh.PublicKey, error) {
+	publicKeyEd25519, privateKey, err := ed25519.GenerateKey(rand.Reader)
+	if err != nil {
+		return nil, nil, err
+	}
+	// convert priv key to x509 format
+	marshaledKey, err := x509.MarshalPKCS8PrivateKey(privateKey)
+	pemKey := &pem.Block{
+		Type:  "PRIVATE KEY",
+		Bytes: marshaledKey,
+	}
+	if err != nil {
+		return nil, nil, err
+	}
+	publicKey, err := gossh.NewPublicKey(publicKeyEd25519)
+	if err != nil {
+		return nil, nil, err
+	}
+	return pemKey, publicKey, err
+}
+
+func ImportSSHKey(keyValue string) (*dbmodels.SSHKey, error) {
+	key := dbmodels.SSHKey{
 		Type: "rsa",
 	}
 
@@ -118,7 +195,7 @@ func decrypt(key []byte, cryptoText string) (string, error) {
 	ciphertext = ciphertext[aes.BlockSize:]
 	stream := cipher.NewCFBDecrypter(block, iv)
 	stream.XORKeyStream(ciphertext, ciphertext)
-	return fmt.Sprintf("%s", ciphertext), nil
+	return string(ciphertext), nil
 }
 
 func safeDecrypt(key []byte, cryptoText string) string {
@@ -132,7 +209,7 @@ func safeDecrypt(key []byte, cryptoText string) string {
 	return out
 }
 
-func HostEncrypt(aesKey string, host *Host) (err error) {
+func HostEncrypt(aesKey string, host *dbmodels.Host) (err error) {
 	if aesKey == "" {
 		return nil
 	}
@@ -141,7 +218,7 @@ func HostEncrypt(aesKey string, host *Host) (err error) {
 	}
 	return
 }
-func HostDecrypt(aesKey string, host *Host) {
+func HostDecrypt(aesKey string, host *dbmodels.Host) {
 	if aesKey == "" {
 		return
 	}
@@ -150,14 +227,14 @@ func HostDecrypt(aesKey string, host *Host) {
 	}
 }
 
-func SSHKeyEncrypt(aesKey string, key *SSHKey) (err error) {
+func SSHKeyEncrypt(aesKey string, key *dbmodels.SSHKey) (err error) {
 	if aesKey == "" {
 		return nil
 	}
 	key.PrivKey, err = encrypt([]byte(aesKey), key.PrivKey)
 	return
 }
-func SSHKeyDecrypt(aesKey string, key *SSHKey) {
+func SSHKeyDecrypt(aesKey string, key *dbmodels.SSHKey) {
 	if aesKey == "" {
 		return
 	}

pkg/dbmodels/dbmodels.go

@@ -1,18 +1,16 @@
-package main
+package dbmodels // import "moul.io/sshportal/pkg/dbmodels"
 
 import (
 	"encoding/json"
 	"fmt"
 	"log"
 	"net/url"
-	"regexp"
 	"strconv"
 	"strings"
 	"time"
 
-	"github.com/asaskevich/govalidator"
-	"github.com/jinzhu/gorm"
 	gossh "golang.org/x/crypto/ssh"
+	"gorm.io/gorm"
 )
 
 type Config struct {
@@ -32,7 +30,7 @@ type Config struct {
 
 type Setting struct {
 	gorm.Model
-	Name  string `valid:"required"`
+	Name  string `valid:"required" gorm:"index:uix_settings_name,unique"`
 	Value string `valid:"required"`
 }
 
@@ -40,12 +38,12 @@ type Setting struct {
 type SSHKey struct {
 	// FIXME: use uuid for ID
 	gorm.Model
-	Name        string  `valid:"required,length(1|32),unix_user"`
+	Name        string  `valid:"required,length(1|255),unix_user" gorm:"index:uix_keys_name,unique"`
 	Type        string  `valid:"required"`
 	Length      uint    `valid:"required"`
 	Fingerprint string  `valid:"optional"`
-	PrivKey     string  `sql:"size:10000" valid:"required"`
-	PubKey      string  `sql:"size:10000" valid:"optional"`
+	PrivKey     string  `sql:"size:5000" valid:"required"`
+	PubKey      string  `sql:"size:1000" valid:"optional"`
 	Hosts       []*Host `gorm:"ForeignKey:SSHKeyID"`
 	Comment     string  `valid:"optional"`
 }
@@ -53,16 +51,17 @@ type SSHKey struct {
 type Host struct {
 	// FIXME: use uuid for ID
 	gorm.Model
-	Name     string       `gorm:"size:32" valid:"required,length(1|32),unix_user"`
+	Name     string       `gorm:"index:uix_hosts_name,unique;type:varchar(255)" valid:"required,length(1|255)"`
 	Addr     string       `valid:"optional"` // FIXME: to be removed in a future version in favor of URL
 	User     string       `valid:"optional"` // FIXME: to be removed in a future version in favor of URL
 	Password string       `valid:"optional"` // FIXME: to be removed in a future version in favor of URL
 	URL      string       `valid:"optional"`
 	SSHKey   *SSHKey      `gorm:"ForeignKey:SSHKeyID"` // SSHKey used to connect by the client
 	SSHKeyID uint         `gorm:"index"`
-	HostKey  []byte       `sql:"size:10000" valid:"optional"`
+	HostKey  []byte       `sql:"size:1000" valid:"optional"`
 	Groups   []*HostGroup `gorm:"many2many:host_host_groups;"`
 	Comment  string       `valid:"optional"`
+	Logging  string       `valid:"optional,host_logging_mode"`
 	Hop      *Host
 	HopID    uint
 }
@@ -70,8 +69,8 @@ type Host struct {
 // UserKey defines a user public key used by sshportal to identify the user
 type UserKey struct {
 	gorm.Model
-	Key           []byte `sql:"size:10000" valid:"required,length(1|10000)"`
-	AuthorizedKey string `sql:"size:10000" valid:"required,length(1|10000)"`
+	Key           []byte `sql:"size:1000" valid:"length(1|1000)"`
+	AuthorizedKey string `sql:"size:1000" valid:"required,length(1|1000)"`
 	UserID        uint   ``
 	User          *User  `gorm:"ForeignKey:UserID"`
 	Comment       string `valid:"optional"`
@@ -79,7 +78,7 @@ type UserKey struct {
 
 type UserRole struct {
 	gorm.Model
-	Name  string  `valid:"required,length(1|32),unix_user"`
+	Name  string  `valid:"required,length(1|255),unix_user"`
 	Users []*User `gorm:"many2many:user_user_roles"`
 }
 
@@ -88,7 +87,7 @@ type User struct {
 	gorm.Model
 	Roles       []*UserRole  `gorm:"many2many:user_user_roles"`
 	Email       string       `valid:"required,email"`
-	Name        string       `valid:"required,length(1|32),unix_user"`
+	Name        string       `valid:"required,length(1|255),unix_user" gorm:"index:uix_users_name,unique"`
 	Keys        []*UserKey   `gorm:"ForeignKey:UserID"`
 	Groups      []*UserGroup `gorm:"many2many:user_user_groups;"`
 	Comment     string       `valid:"optional"`
@@ -97,7 +96,7 @@ type User struct {
 
 type UserGroup struct {
 	gorm.Model
-	Name    string  `valid:"required,length(1|32),unix_user"`
+	Name    string  `valid:"required,length(1|255),unix_user" gorm:"index:uix_usergroups_name,unique"`
 	Users   []*User `gorm:"many2many:user_user_groups;"`
 	ACLs    []*ACL  `gorm:"many2many:user_group_acls;"`
 	Comment string  `valid:"optional"`
@@ -105,7 +104,7 @@ type UserGroup struct {
 
 type HostGroup struct {
 	gorm.Model
-	Name    string  `valid:"required,length(1|32),unix_user"`
+	Name    string  `valid:"required,length(1|255),unix_user" gorm:"index:uix_hostgroups_name,unique"`
 	Hosts   []*Host `gorm:"many2many:host_host_groups;"`
 	ACLs    []*ACL  `gorm:"many2many:host_group_acls;"`
 	Comment string  `valid:"optional"`
@@ -119,6 +118,8 @@ type ACL struct {
 	Action      string       `valid:"required"`
 	Weight      uint         ``
 	Comment     string       `valid:"optional"`
+	Inception   *time.Time
+	Expiration  *time.Time
 }
 
 type Session struct {
@@ -166,30 +167,27 @@ const (
 	BastionSchemeTelnet BastionScheme = "telnet"
 )
 
-func init() {
-	unixUserRegexp := regexp.MustCompile("[a-z_][a-z0-9_-]*")
-
-	govalidator.CustomTypeTagMap.Set("unix_user", govalidator.CustomTypeValidator(func(i interface{}, context interface{}) bool {
-		name, ok := i.(string)
-		if !ok {
-			return false
+// Generic Helper
+func GenericNameOrID(db *gorm.DB, identifiers []string) *gorm.DB {
+	var ids []string
+	var names []string
+	for _, s := range identifiers {
+		if _, err := strconv.Atoi(s); err == nil {
+			ids = append(ids, s)
+		} else {
+			names = append(names, s)
 		}
-		return unixUserRegexp.MatchString(name)
-	}))
+	}
+	if len(ids) > 0 && len(names) > 0 {
+		return db.Where("id IN (?)", ids).Or("name IN (?)", names)
+	} else if len(ids) > 0 {
+		return db.Where("id IN (?)", ids)
+	}
+	return db.Where("name IN (?)", names)
 }
 
 // Host helpers
 
-func ParseInputURL(input string) (*url.URL, error) {
-	if !strings.Contains(input, "://") {
-		input = "ssh://" + input
-	}
-	u, err := url.Parse(input)
-	if err != nil {
-		return nil, err
-	}
-	return u, nil
-}
 func (host *Host) DialAddr() string {
 	return fmt.Sprintf("%s:%d", host.Hostname(), host.Port())
 }
@@ -289,7 +287,7 @@ func HostsPreload(db *gorm.DB) *gorm.DB {
 	return db.Preload("Groups").Preload("SSHKey")
 }
 func HostsByIdentifiers(db *gorm.DB, identifiers []string) *gorm.DB {
-	return db.Where("id IN (?)", identifiers).Or("name IN (?)", identifiers)
+	return GenericNameOrID(db, identifiers)
 }
 func HostByName(db *gorm.DB, name string) (*Host, error) {
 	var host Host
@@ -301,7 +299,7 @@ func HostByName(db *gorm.DB, name string) (*Host, error) {
 	return &host, nil
 }
 
-func (host *Host) clientConfig(hk gossh.HostKeyCallback) (*gossh.ClientConfig, error) {
+func (host *Host) ClientConfig(hk gossh.HostKeyCallback) (*gossh.ClientConfig, error) {
 	config := gossh.ClientConfig{
 		User:            host.Username(),
 		HostKeyCallback: hk,
@@ -329,7 +327,7 @@ func SSHKeysPreload(db *gorm.DB) *gorm.DB {
 	return db.Preload("Hosts")
 }
 func SSHKeysByIdentifiers(db *gorm.DB, identifiers []string) *gorm.DB {
-	return db.Where("id IN (?)", identifiers).Or("name IN (?)", identifiers)
+	return GenericNameOrID(db, identifiers)
 }
 
 // HostGroup helpers
@@ -338,7 +336,7 @@ func HostGroupsPreload(db *gorm.DB) *gorm.DB {
 	return db.Preload("ACLs").Preload("Hosts")
 }
 func HostGroupsByIdentifiers(db *gorm.DB, identifiers []string) *gorm.DB {
-	return db.Where("id IN (?)", identifiers).Or("name IN (?)", identifiers)
+	return GenericNameOrID(db, identifiers)
 }
 
 // UserGroup helpers
@@ -347,7 +345,7 @@ func UserGroupsPreload(db *gorm.DB) *gorm.DB {
 	return db.Preload("ACLs").Preload("Users")
 }
 func UserGroupsByIdentifiers(db *gorm.DB, identifiers []string) *gorm.DB {
-	return db.Where("id IN (?)", identifiers).Or("name IN (?)", identifiers)
+	return GenericNameOrID(db, identifiers)
 }
 
 // User helpers
@@ -356,7 +354,21 @@ func UsersPreload(db *gorm.DB) *gorm.DB {
 	return db.Preload("Groups").Preload("Keys").Preload("Roles")
 }
 func UsersByIdentifiers(db *gorm.DB, identifiers []string) *gorm.DB {
-	return db.Where("id IN (?)", identifiers).Or("email IN (?)", identifiers).Or("name IN (?)", identifiers)
+	var ids []string
+	var names []string
+	for _, s := range identifiers {
+		if _, err := strconv.Atoi(s); err == nil {
+			ids = append(ids, s)
+		} else {
+			names = append(names, s)
+		}
+	}
+	if len(ids) > 0 && len(names) > 0 {
+		db.Where("id IN (?)", identifiers).Or("email IN (?)", identifiers).Or("name IN (?)", identifiers)
+	} else if len(ids) > 0 {
+		return db.Where("id IN (?)", ids)
+	}
+	return db.Where("email IN (?)", identifiers).Or("name IN (?)", identifiers)
 }
 func (u *User) HasRole(name string) bool {
 	for _, role := range u.Roles {
@@ -392,14 +404,14 @@ func UserKeysPreload(db *gorm.DB) *gorm.DB {
 func UserKeysByIdentifiers(db *gorm.DB, identifiers []string) *gorm.DB {
 	return db.Where("id IN (?)", identifiers)
 }
+func UserKeysByUserID(db *gorm.DB, identifiers []string) *gorm.DB {
+	return db.Where("user_id IN (?)", identifiers)
+}
 
 // UserRole helpers
 
-//func UserRolesPreload(db *gorm.DB) *gorm.DB {
-//	return db.Preload("Users")
-//}
 func UserRolesByIdentifiers(db *gorm.DB, identifiers []string) *gorm.DB {
-	return db.Where("id IN (?)", identifiers).Or("name IN (?)", identifiers)
+	return GenericNameOrID(db, identifiers)
 }
 
 // Session helpers
@@ -446,7 +458,6 @@ func (e *Event) Log(db *gorm.DB) {
 }
 
 func (e *Event) SetAuthor(user *User) *Event {
-	//e.Author = user
 	e.AuthorID = user.ID
 	return e
 }

pkg/dbmodels/validator.go

@@ -0,0 +1,33 @@
+package dbmodels
+
+import (
+	"regexp"
+
+	"github.com/asaskevich/govalidator"
+)
+
+func InitValidator() {
+	unixUserRegexp := regexp.MustCompile("[a-z_][a-z0-9_-]*")
+
+	govalidator.CustomTypeTagMap.Set("unix_user", govalidator.CustomTypeValidator(func(i interface{}, context interface{}) bool {
+		name, ok := i.(string)
+		if !ok {
+			return false
+		}
+		return unixUserRegexp.MatchString(name)
+	}))
+	govalidator.CustomTypeTagMap.Set("host_logging_mode", govalidator.CustomTypeValidator(func(i interface{}, context interface{}) bool {
+		name, ok := i.(string)
+		if !ok {
+			return false
+		}
+		if name == "" {
+			return true
+		}
+		return IsValidHostLoggingMode(name)
+	}))
+}
+
+func IsValidHostLoggingMode(name string) bool {
+	return name == "disabled" || name == "input" || name == "everything"
+}

pkg/utils/emailvalidator.go

@@ -0,0 +1,13 @@
+package utils
+
+import "regexp"
+
+var emailRegex = regexp.MustCompile("^[a-zA-Z0-9.!#$%&'*+\\/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$")
+
+// ValidateEmail validates email.
+func ValidateEmail(e string) bool {
+	if len(e) < 3 || len(e) > 254 {
+		return false
+	}
+	return emailRegex.MatchString(e)
+}

pkg/utils/emailvalidator_test.go

@@ -0,0 +1,30 @@
+package utils_test
+
+import (
+	"testing"
+
+	"moul.io/sshportal/pkg/utils"
+)
+
+func TestValidateEmail(t *testing.T) {
+	tests := []struct {
+		input    string
+		expected bool
+	}{
+		{"goodemail@email.com", true},
+		{"b@2323.22", true},
+		{"b@2322.", false},
+		{"", false},
+		{"blah", false},
+		{"blah.com", false},
+	}
+
+	for _, test := range tests {
+		t.Run(test.input, func(t *testing.T) {
+			got := utils.ValidateEmail(test.input)
+			if got != test.expected {
+				t.Errorf("expected %v, got %v", test.expected, got)
+			}
+		})
+	}
+}

rules.mk

@@ -0,0 +1,361 @@
+# +--------------------------------------------------------------+
+# | * * *                moul.io/rules.mk                        |
+# +--------------------------------------------------------------+
+# |                                                              |
+# |     ++              ______________________________________   |
+# |     ++++           /                                      \  |
+# |      ++++          |                                      |  |
+# |    ++++++++++      |   https://moul.io/rules.mk is a set  |  |
+# |   +++       |      |   of common Makefile rules that can  |  |
+# |   ++         |     |   be configured from the Makefile    |  |
+# |   +  -==   ==|     |   or with environment variables.     |  |
+# |  (   <*>   <*>     |                                      |  |
+# |   |          |    /|                      Manfred Touron  |  |
+# |   |         _)   / |                        manfred.life  |  |
+# |   |      +++    /  \______________________________________/  |
+# |    \      =+   /                                             |
+# |     \      +                                                 |
+# |     |\++++++                                                 |
+# |     |  ++++      ||//                                        |
+# |  ___|   |___    _||/__                                     __|
+# | /    ---    \   \|  |||                   __ _  ___  __ __/ /|
+# |/  |       |  \    \ /                    /  ' \/ _ \/ // / / |
+# ||  |       |  |    | |                   /_/_/_/\___/\_,_/_/  |
+# +--------------------------------------------------------------+
+
+.PHONY: _default_entrypoint
+_default_entrypoint: help
+
+##
+## Common helpers
+##
+
+rwildcard = $(foreach d,$(wildcard $1*),$(call rwildcard,$d/,$2) $(filter $(subst *,%,$2),$d))
+check-program = $(foreach exec,$(1),$(if $(shell PATH="$(PATH)" which $(exec)),,$(error "No $(exec) in PATH")))
+my-filter-out = $(foreach v,$(2),$(if $(findstring $(1),$(v)),,$(v)))
+novendor = $(call my-filter-out,vendor/,$(1))
+
+##
+## rules.mk
+##
+ifneq ($(wildcard rules.mk),)
+.PHONY: rulesmk.bumpdeps
+rulesmk.bumpdeps:
+	wget -O rules.mk https://raw.githubusercontent.com/moul/rules.mk/master/rules.mk
+BUMPDEPS_STEPS += rulesmk.bumpdeps
+endif
+
+##
+## Maintainer
+##
+
+ifneq ($(wildcard .git/HEAD),)
+.PHONY: generate.authors
+generate.authors: AUTHORS
+AUTHORS: .git/
+	echo "# This file lists all individuals having contributed content to the repository." > AUTHORS
+	echo "# For how it is generated, see 'https://github.com/moul/rules.mk'" >> AUTHORS
+	echo >> AUTHORS
+	git log --format='%aN <%aE>' | LC_ALL=C.UTF-8 sort -uf >> AUTHORS
+GENERATE_STEPS += generate.authors
+endif
+
+##
+## Golang
+##
+
+ifndef GOPKG
+ifneq ($(wildcard go.mod),)
+GOPKG = $(shell sed '/module/!d;s/^omdule\ //' go.mod)
+endif
+endif
+ifdef GOPKG
+GO ?= go
+GOPATH ?= $(HOME)/go
+GO_INSTALL_OPTS ?=
+GO_TEST_OPTS ?= -test.timeout=30s
+GOMOD_DIRS ?= $(sort $(call novendor,$(dir $(call rwildcard,*,*/go.mod go.mod))))
+GOCOVERAGE_FILE ?= ./coverage.txt
+GOTESTJSON_FILE ?= ./go-test.json
+GOBUILDLOG_FILE ?= ./go-build.log
+GOINSTALLLOG_FILE ?= ./go-install.log
+
+ifdef GOBINS
+.PHONY: go.install
+go.install:
+ifeq ($(CI),true)
+	@rm -f /tmp/goinstall.log
+	@set -e; for dir in $(GOBINS); do ( set -xe; \
+	  cd $$dir; \
+	  $(GO) install -v $(GO_INSTALL_OPTS) .; \
+	); done 2>&1 | tee $(GOINSTALLLOG_FILE)
+
+else
+	@set -e; for dir in $(GOBINS); do ( set -xe; \
+	  cd $$dir; \
+	  $(GO) install $(GO_INSTALL_OPTS) .; \
+	); done
+endif
+INSTALL_STEPS += go.install
+
+.PHONY: go.release
+go.release:
+	$(call check-program, goreleaser)
+	goreleaser --snapshot --skip-publish --rm-dist
+	@echo -n "Do you want to release? [y/N] " && read ans && \
+	  if [ $${ans:-N} = y ]; then set -xe; goreleaser --rm-dist; fi
+RELEASE_STEPS += go.release
+endif
+
+.PHONY: go.unittest
+go.unittest:
+ifeq ($(CI),true)
+	@echo "mode: atomic" > /tmp/gocoverage
+	@rm -f $(GOTESTJSON_FILE)
+	@set -e; for dir in $(GOMOD_DIRS); do (set -e; (set -euf pipefail; \
+		cd $$dir; \
+		(($(GO) test ./... $(GO_TEST_OPTS) -cover -coverprofile=/tmp/profile.out -covermode=atomic -race -json && touch $@.ok) | tee -a $(GOTESTJSON_FILE) 3>&1 1>&2 2>&3 | tee -a $(GOBUILDLOG_FILE); \
+	  ); \
+	  rm $@.ok 2>/dev/null || exit 1; \
+	  if [ -f /tmp/profile.out ]; then \
+		cat /tmp/profile.out | sed "/mode: atomic/d" >> /tmp/gocoverage; \
+		rm -f /tmp/profile.out; \
+	  fi)); done
+	@mv /tmp/gocoverage $(GOCOVERAGE_FILE)
+else
+	@echo "mode: atomic" > /tmp/gocoverage
+	@set -e; for dir in $(GOMOD_DIRS); do (set -e; (set -xe; \
+	  cd $$dir; \
+	  $(GO) test ./... $(GO_TEST_OPTS) -cover -coverprofile=/tmp/profile.out -covermode=atomic -race); \
+	  if [ -f /tmp/profile.out ]; then \
+		cat /tmp/profile.out | sed "/mode: atomic/d" >> /tmp/gocoverage; \
+		rm -f /tmp/profile.out; \
+	  fi); done
+	@mv /tmp/gocoverage $(GOCOVERAGE_FILE)
+endif
+
+.PHONY: go.checkdoc
+go.checkdoc:
+	go doc $(first $(GOMOD_DIRS))
+
+.PHONY: go.coverfunc
+go.coverfunc: go.unittest
+	go tool cover -func=$(GOCOVERAGE_FILE) | grep -v .pb.go: | grep -v .pb.gw.go:
+
+.PHONY: go.lint
+go.lint:
+	@set -e; for dir in $(GOMOD_DIRS); do ( set -xe; \
+	  cd $$dir; \
+	  golangci-lint run --verbose ./...; \
+	); done
+
+.PHONY: go.tidy
+go.tidy:
+	@# tidy dirs with go.mod files
+	@set -e; for dir in $(GOMOD_DIRS); do ( set -xe; \
+	  cd $$dir; \
+	  $(GO)	mod tidy; \
+	); done
+
+.PHONY: go.depaware-update
+go.depaware-update: go.tidy
+	@# gen depaware for bins
+	@set -e; for dir in $(GOBINS); do ( set -xe; \
+	  cd $$dir; \
+	  $(GO) run github.com/tailscale/depaware --update .; \
+	); done
+	@# tidy unused depaware deps if not in a tools_test.go file
+	@set -e; for dir in $(GOMOD_DIRS); do ( set -xe; \
+	  cd $$dir; \
+	  $(GO)	mod tidy; \
+	); done
+
+.PHONY: go.depaware-check
+go.depaware-check: go.tidy
+	@# gen depaware for bins
+	@set -e; for dir in $(GOBINS); do ( set -xe; \
+	  cd $$dir; \
+	  $(GO) run github.com/tailscale/depaware --check .; \
+	); done
+
+
+.PHONY: go.build
+go.build:
+	@set -e; for dir in $(GOMOD_DIRS); do ( set -xe; \
+	  cd $$dir; \
+	  $(GO)	build ./...; \
+	); done
+
+.PHONY: go.bump-deps
+go.bumpdeps:
+	@set -e; for dir in $(GOMOD_DIRS); do ( set -xe; \
+	  cd $$dir; \
+	  $(GO)	get -u ./...; \
+	); done
+
+.PHONY: go.fmt
+go.fmt:
+	@set -e; for dir in $(GOMOD_DIRS); do ( set -xe; \
+	  cd $$dir; \
+	  $(GO) run golang.org/x/tools/cmd/goimports -w `go list -f '{{.Dir}}' ./...` \
+	); done
+
+VERIFY_STEPS += go.depaware-check
+BUILD_STEPS += go.build
+BUMPDEPS_STEPS += go.bumpdeps go.depaware-update
+TIDY_STEPS += go.tidy
+LINT_STEPS += go.lint
+UNITTEST_STEPS += go.unittest
+FMT_STEPS += go.fmt
+
+# FIXME: disabled, because currently slow
+# new rule that is manually run sometimes, i.e. `make pre-release` or `make maintenance`.
+# alternative: run it each time the go.mod is changed
+#GENERATE_STEPS += go.depaware-update
+endif
+
+##
+## Gitattributes
+##
+
+ifneq ($(wildcard .gitattributes),)
+.PHONY: _linguist-ignored
+_linguist-kept:
+	@git check-attr linguist-vendored $(shell git check-attr linguist-generated $(shell find . -type f | grep -v .git/) | grep unspecified | cut -d: -f1) | grep unspecified | cut -d: -f1 | sort
+
+.PHONY: _linguist-kept
+_linguist-ignored:
+	@git check-attr linguist-vendored linguist-ignored `find . -not -path './.git/*' -type f` | grep '\ set$$' | cut -d: -f1 | sort -u
+endif
+
+##
+## Node
+##
+
+ifndef NPM_PACKAGES
+ifneq ($(wildcard package.json),)
+NPM_PACKAGES = .
+endif
+endif
+ifdef NPM_PACKAGES
+.PHONY: npm.publish
+npm.publish:
+	@echo -n "Do you want to npm publish? [y/N] " && read ans && \
+	@if [ $${ans:-N} = y ]; then \
+	  set -e; for dir in $(NPM_PACKAGES); do ( set -xe; \
+		cd $$dir; \
+		npm publish --access=public; \
+	  ); done; \
+	fi
+RELEASE_STEPS += npm.publish
+endif
+
+##
+## Docker
+##
+
+docker_build =	docker build \
+	  --build-arg VCS_REF=`git rev-parse --short HEAD` \
+	  --build-arg BUILD_DATE=`date -u +"%Y-%m-%dT%H:%M:%SZ"` \
+	  --build-arg VERSION=`git describe --tags --always` \
+	  -t "$2" -f "$1" "$(dir $1)"
+
+ifndef DOCKERFILE_PATH
+DOCKERFILE_PATH = ./Dockerfile
+endif
+ifndef DOCKER_IMAGE
+ifneq ($(wildcard Dockerfile),)
+DOCKER_IMAGE = $(notdir $(PWD))
+endif
+endif
+ifdef DOCKER_IMAGE
+ifneq ($(DOCKER_IMAGE),none)
+.PHONY: docker.build
+docker.build:
+	$(call check-program, docker)
+	$(call docker_build,$(DOCKERFILE_PATH),$(DOCKER_IMAGE))
+
+BUILD_STEPS += docker.build
+endif
+endif
+
+##
+## Common
+##
+
+TEST_STEPS += $(UNITTEST_STEPS)
+TEST_STEPS += $(LINT_STEPS)
+TEST_STEPS += $(TIDY_STEPS)
+
+ifneq ($(strip $(TEST_STEPS)),)
+.PHONY: test
+test: $(PRE_TEST_STEPS) $(TEST_STEPS)
+endif
+
+ifdef INSTALL_STEPS
+.PHONY: install
+install: $(PRE_INSTALL_STEPS) $(INSTALL_STEPS)
+endif
+
+ifdef UNITTEST_STEPS
+.PHONY: unittest
+unittest: $(PRE_UNITTEST_STEPS) $(UNITTEST_STEPS)
+endif
+
+ifdef LINT_STEPS
+.PHONY: lint
+lint: $(PRE_LINT_STEPS) $(FMT_STEPS) $(LINT_STEPS)
+endif
+
+ifdef TIDY_STEPS
+.PHONY: tidy
+tidy: $(PRE_TIDY_STEPS) $(TIDY_STEPS)
+endif
+
+ifdef BUILD_STEPS
+.PHONY: build
+build: $(PRE_BUILD_STEPS) $(BUILD_STEPS)
+endif
+
+ifdef VERIFY_STEPS
+.PHONY: verify
+verify: $(PRE_VERIFY_STEPS) $(VERIFY_STEPS)
+endif
+
+ifdef RELEASE_STEPS
+.PHONY: release
+release: $(PRE_RELEASE_STEPS) $(RELEASE_STEPS)
+endif
+
+ifdef BUMPDEPS_STEPS
+.PHONY: bumpdeps
+bumpdeps: $(PRE_BUMDEPS_STEPS) $(BUMPDEPS_STEPS)
+endif
+
+ifdef FMT_STEPS
+.PHONY: fmt
+fmt: $(PRE_FMT_STEPS) $(FMT_STEPS)
+endif
+
+ifdef GENERATE_STEPS
+.PHONY: generate
+generate: $(PRE_GENERATE_STEPS) $(GENERATE_STEPS)
+endif
+
+.PHONY: help
+help::
+	@echo "General commands:"
+	@[ "$(BUILD_STEPS)" != "" ]     && echo "  build"     || true
+	@[ "$(BUMPDEPS_STEPS)" != "" ]  && echo "  bumpdeps"  || true
+	@[ "$(FMT_STEPS)" != "" ]       && echo "  fmt"       || true
+	@[ "$(GENERATE_STEPS)" != "" ]  && echo "  generate"  || true
+	@[ "$(INSTALL_STEPS)" != "" ]   && echo "  install"   || true
+	@[ "$(LINT_STEPS)" != "" ]      && echo "  lint"      || true
+	@[ "$(RELEASE_STEPS)" != "" ]   && echo "  release"   || true
+	@[ "$(TEST_STEPS)" != "" ]      && echo "  test"      || true
+	@[ "$(TIDY_STEPS)" != "" ]      && echo "  tidy"      || true
+	@[ "$(UNITTEST_STEPS)" != "" ]  && echo "  unittest"  || true
+	@[ "$(VERIFY_STEPS)" != "" ]    && echo "  verify"    || true
+	@# FIXME: list other commands
+
+print-% : ; $(info $* is a $(flavor $*) variable set to [$($*)]) @true

server.go

@@ -0,0 +1,158 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"math"
+	"net"
+	"os"
+	"time"
+
+	"gorm.io/driver/mysql"
+	"gorm.io/driver/postgres"
+	"gorm.io/driver/sqlite"
+	"gorm.io/gorm"
+	"gorm.io/gorm/logger"
+
+	"github.com/gliderlabs/ssh"
+	"github.com/urfave/cli"
+	gossh "golang.org/x/crypto/ssh"
+	"moul.io/sshportal/pkg/bastion"
+)
+
+type serverConfig struct {
+	aesKey          string
+	dbDriver, dbURL string
+	logsLocation    string
+	bindAddr        string
+	debug, demo     bool
+	idleTimeout     time.Duration
+	aclCheckCmd     string
+}
+
+func parseServerConfig(c *cli.Context) (*serverConfig, error) {
+	ret := &serverConfig{
+		aesKey:       c.String("aes-key"),
+		dbDriver:     c.String("db-driver"),
+		dbURL:        c.String("db-conn"),
+		bindAddr:     c.String("bind-address"),
+		debug:        c.Bool("debug"),
+		demo:         c.Bool("demo"),
+		logsLocation: c.String("logs-location"),
+		idleTimeout:  c.Duration("idle-timeout"),
+		aclCheckCmd:  c.String("acl-check-cmd"),
+	}
+	switch len(ret.aesKey) {
+	case 0, 16, 24, 32:
+	default:
+		return nil, fmt.Errorf("invalid aes key size, should be 16 or 24, 32")
+	}
+	return ret, nil
+}
+
+func ensureLogDirectory(location string) error {
+	// check for the logdir existence
+	logsLocation, err := os.Stat(location)
+	if err != nil {
+		if os.IsNotExist(err) {
+			return os.MkdirAll(location, os.ModeDir|os.FileMode(0750))
+		}
+		return err
+	}
+	if !logsLocation.IsDir() {
+		return fmt.Errorf("log directory cannot be created")
+	}
+	return nil
+}
+
+func dbConnect(c *serverConfig, config gorm.Option) (*gorm.DB, error) {
+	var dbOpen func(string) gorm.Dialector
+	if c.dbDriver == "sqlite3" {
+		dbOpen = sqlite.Open
+	}
+	if c.dbDriver == "postgres" {
+		dbOpen = postgres.Open
+	}
+
+	if c.dbDriver == "mysql" {
+		dbOpen = mysql.Open
+	}
+	return gorm.Open(dbOpen(c.dbURL), config)
+}
+
+func server(c *serverConfig) (err error) {
+	// configure db logging
+
+	db, err := dbConnect(c, &gorm.Config{
+		Logger: logger.Default.LogMode(logger.Silent),
+	})
+	sqlDB, err := db.DB()
+
+	defer func() {
+		origErr := err
+		err = sqlDB.Close()
+		if origErr != nil {
+			err = origErr
+		}
+	}()
+
+	if err = sqlDB.Ping(); err != nil {
+		return
+	}
+
+	if err = bastion.DBInit(db); err != nil {
+		return
+	}
+
+	// create TCP listening socket
+	ln, err := net.Listen("tcp", c.bindAddr)
+	if err != nil {
+		return err
+	}
+
+	// configure server
+	srv := &ssh.Server{
+		Addr:    c.bindAddr,
+		Handler: func(s ssh.Session) { bastion.ShellHandler(s, GitTag, GitSha, GitTag) }, // ssh.Server.Handler is the handler for the DefaultSessionHandler
+		Version: fmt.Sprintf("sshportal-%s", GitTag),
+		ChannelHandlers: map[string]ssh.ChannelHandler{
+			"default": bastion.ChannelHandler,
+		},
+	}
+
+	// configure channel handler
+	bastion.DefaultChannelHandler = func(srv *ssh.Server, conn *gossh.ServerConn, newChan gossh.NewChannel, ctx ssh.Context) {
+		switch newChan.ChannelType() {
+		case "session":
+			go ssh.DefaultSessionHandler(srv, conn, newChan, ctx)
+		case "direct-tcpip":
+			go ssh.DirectTCPIPHandler(srv, conn, newChan, ctx)
+		default:
+			if err := newChan.Reject(gossh.UnknownChannelType, "unsupported channel type"); err != nil {
+				log.Printf("failed to reject chan: %v", err)
+			}
+		}
+	}
+
+	if c.idleTimeout != 0 {
+		srv.IdleTimeout = c.idleTimeout
+		// gliderlabs/ssh requires MaxTimeout to be non-zero if we want to use IdleTimeout.
+		// So, set it to the max value, because we don't want a max timeout.
+		srv.MaxTimeout = math.MaxInt64
+	}
+
+	for _, opt := range []ssh.Option{
+		// custom PublicKeyAuth handler
+		ssh.PublicKeyAuth(bastion.PublicKeyAuthHandler(db, c.logsLocation, c.aclCheckCmd, c.aesKey, c.dbDriver, c.dbURL, c.bindAddr, c.demo)),
+		ssh.PasswordAuth(bastion.PasswordAuthHandler(db, c.logsLocation, c.aclCheckCmd, c.aesKey, c.dbDriver, c.dbURL, c.bindAddr, c.demo)),
+		// retrieve sshportal SSH private key from database
+		bastion.PrivateKeyFromDB(db, c.aesKey),
+	} {
+		if err := srv.SetOption(opt); err != nil {
+			return err
+		}
+	}
+
+	log.Printf("info: SSH Server accepting connections on %s, idle-timout=%v", c.bindAddr, c.idleTimeout)
+	return srv.Serve(ln)
+}

testserver.go

@@ -1,3 +1,4 @@
+//go:build !windows
 // +build !windows
 
 package main
@@ -11,8 +12,8 @@ import (
 	"syscall"
 	"unsafe"
 
+	"github.com/gliderlabs/ssh"
 	"github.com/kr/pty"
-	"github.com/moul/ssh"
 	"github.com/urfave/cli"
 )
 
@@ -60,7 +61,7 @@ func testServer(c *cli.Context) error {
 			_, _ = io.Copy(s, f) // #nosec
 			cmdErr = cmd.Wait()
 		} else {
-			//cmd.Stdin = s
+			// cmd.Stdin = s
 			cmd.Stdout = s
 			cmd.Stderr = s
 			cmdErr = cmd.Run()

testserver_unsupported.go

@@ -0,0 +1,14 @@
+// +build windows
+
+package main
+
+import (
+	"fmt"
+
+	"github.com/urfave/cli"
+)
+
+// testServer is an hidden handler used for integration tests
+func testServer(c *cli.Context) error {
+	return fmt.Errorf("not available on windows")
+}

util.go

@@ -1,20 +0,0 @@
-package main
-
-import "math/rand"
-
-const letterBytes = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
-
-func randStringBytes(n int) string {
-	b := make([]byte, n)
-	for i := range b {
-		b[i] = letterBytes[rand.Intn(len(letterBytes))]
-	}
-	return string(b)
-}
-
-func wrapText(in string, length int) string {
-	if len(in) <= length {
-		return in
-	}
-	return in[0:length-3] + "..."
-}