chore: switch to multiline function definition in resolver.go

2018-12-09 11:37:36 +01:00
54 changed files with 1202 additions and 2218 deletions
--- a/.assets/cluster-mysql.png
+++ b/.assets/cluster-mysql.png
--- a/.assets/flow-diagram.dot
+++ b/.assets/flow-diagram.dot
@@ -1,12 +1,12 @@
 digraph {
-    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];
-
+    rankdir=LR;
+    layout=dot;
+    node[shape=record];
+    
+    start[label="ssh sshportal";color=blue;fontcolor=blue;fontsize=20];
+    
    subgraph cluster_sshportal {
-        graph[fontsize=18;color=gray;fontcolor=black];
+        graph[fontsize=20;style=dashed;color=purple;fontcolor=purple];
        label="sshportal";
        {
            node[color=darkorange;fontcolor=darkorange];
@@ -17,25 +17,25 @@ digraph {
        }
        {
            node[color=darkgreen;fontcolor=darkgreen];
-            builtin_shell[label="built-in\nconfig shell"];
-            ssh_proxy[label="SSH proxy\nJump-Host"];
-            learn_key[label="learn the\npub key"];
+            builtin_shell[label="built-in shell"];
+            ssh_proxy[label="SSH proxy"];
+            learn_key[label="learn key"];
        }
-        err_and_exit[label="\nerror\nand exit\n\n";color=red;fontcolor=red];
+        err_and_exit[label="error and exit";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=18;color=gray;fontcolor=black];
+        graph[fontsize=20;style=dashed;color=purple;fontcolor=purple];
        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[label="user=invite:<token>";labelloc=b];
+        unknown_user_key -> invite_manager[headlabel="user=invite:<token>"];
    }
    {
        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";constraint=false];
-        invite_manager -> err_and_exit[label="invalid token";constraint=false];
+        unknown_user_key -> err_and_exit[label="any other user"];
+        invite_manager -> err_and_exit[label="invalid token"];
    }
 }
--- a/.assets/flow-diagram.png
+++ b/.assets/flow-diagram.png
--- a/.assets/flow-diagram.svg
+++ b/.assets/flow-diagram.svg
@@ -4,175 +4,185 @@
 <!-- Generated by graphviz version 2.40.1 (20161225.0304)
 -->
 <!-- Title: %3 Pages: 1 -->
-<svg width="1150pt" height="310pt"
- viewBox="0.00 0.00 1149.83 310.00" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
-<g id="graph0" class="graph" transform="scale(1 1) rotate(0) translate(4 306)">
+<svg width="1026pt" height="312pt"
+ viewBox="0.00 0.00 1026.42 312.00" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">
+<g id="graph0" class="graph" transform="scale(1 1) rotate(0) translate(4 308)">
 <title>%3</title>
-<polygon fill="#ffffff" stroke="transparent" points="-4,4 -4,-306 1145.8281,-306 1145.8281,4 -4,4"/>
+<polygon fill="#ffffff" stroke="transparent" points="-4,4 -4,-308 1022.4219,-308 1022.4219,4 -4,4"/>
 <g id="clust1" class="cluster">
 <title>cluster_sshportal</title>
-<polygon fill="none" stroke="#c0c0c0" points="187.5586,-8 187.5586,-294 964.46,-294 964.46,-8 187.5586,-8"/>
-<text text-anchor="middle" x="576.0093" y="-275.6" font-family="Helvetica,sans-Serif" font-weight="bold" font-size="18.00" fill="#000000">sshportal</text>
+<polygon fill="none" stroke="#a020f0" stroke-dasharray="5,2" points="147.7832,-8 147.7832,-296 858.9775,-296 858.9775,-8 147.7832,-8"/>
+<text text-anchor="middle" x="503.3804" y="-276" font-family="Times,serif" font-size="20.00" fill="#a020f0">sshportal</text>
 </g>
 <g id="clust6" class="cluster">
 <title>cluster_hosts</title>
-<polygon fill="none" stroke="#c0c0c0" points="985.46,-104 985.46,-294 1133.8281,-294 1133.8281,-104 985.46,-104"/>
-<text text-anchor="middle" x="1059.644" y="-275.6" font-family="Helvetica,sans-Serif" font-weight="bold" font-size="18.00" fill="#000000">your hosts</text>
+<polygon fill="none" stroke="#a020f0" stroke-dasharray="5,2" points="879.9775,-104 879.9775,-296 1010.4219,-296 1010.4219,-104 879.9775,-104"/>
+<text text-anchor="middle" x="945.1997" y="-276" font-family="Times,serif" font-size="20.00" fill="#a020f0">your hosts</text>
 </g>
 <!-- start -->
 <g id="node1" class="node">
 <title>start</title>
-<path fill="none" stroke="#0000ff" d="M12,-122C12,-122 146.5586,-122 146.5586,-122 152.5586,-122 158.5586,-128 158.5586,-134 158.5586,-134 158.5586,-146 158.5586,-146 158.5586,-152 152.5586,-158 146.5586,-158 146.5586,-158 12,-158 12,-158 6,-158 0,-152 0,-146 0,-146 0,-134 0,-134 0,-128 6,-122 12,-122"/>
-<text text-anchor="middle" x="79.2793" y="-134.6" font-family="Helvetica,sans-Serif" font-weight="bold" font-size="18.00" fill="#0000ff">$&gt; ssh sshportal</text>
+<polygon fill="none" stroke="#0000ff" points="0,-118 0,-154 118.7832,-154 118.7832,-118 0,-118"/>
+<text text-anchor="middle" x="59.3916" y="-130" font-family="Times,serif" font-size="20.00" fill="#0000ff">ssh sshportal</text>
 </g>
 <!-- known_user_key -->
 <g id="node2" class="node">
 <title>known_user_key</title>
-<path fill="none" stroke="#ff8c00" d="M216.1104,-161C216.1104,-161 313.1514,-161 313.1514,-161 319.1514,-161 325.1514,-167 325.1514,-173 325.1514,-173 325.1514,-185 325.1514,-185 325.1514,-191 319.1514,-197 313.1514,-197 313.1514,-197 216.1104,-197 216.1104,-197 210.1104,-197 204.1104,-191 204.1104,-185 204.1104,-185 204.1104,-173 204.1104,-173 204.1104,-167 210.1104,-161 216.1104,-161"/>
-<text text-anchor="middle" x="264.6309" y="-174.8" font-family="Helvetica,sans-Serif" font-weight="bold" font-size="14.00" fill="#ff8c00">known user key</text>
+<polygon fill="none" stroke="#ff8c00" points="162.7832,-157 162.7832,-193 267.4316,-193 267.4316,-157 162.7832,-157"/>
+<text text-anchor="middle" x="215.1074" y="-170.8" font-family="Times,serif" font-size="14.00" fill="#ff8c00">known user key</text>
 </g>
 <!-- start&#45;&gt;known_user_key -->
 <g id="edge1" class="edge">
 <title>start&#45;&gt;known_user_key</title>
-<path fill="none" stroke="#0000ff" d="M158.6917,-156.7092C173.8232,-159.8931 189.4365,-163.1783 203.8727,-166.2158"/>
+<path fill="none" stroke="#0000ff" d="M119.1501,-150.9669C130.1162,-153.7134 141.5894,-156.587 152.6326,-159.3528"/>
+<polygon fill="#0000ff" stroke="#0000ff" points="152.0758,-162.8214 162.6266,-161.8558 153.7765,-156.0311 152.0758,-162.8214"/>
 </g>
 <!-- unknown_user_key -->
 <g id="node3" class="node">
 <title>unknown_user_key</title>
-<path fill="none" stroke="#ff8c00" d="M207.5586,-69C207.5586,-69 321.7031,-69 321.7031,-69 327.7031,-69 333.7031,-75 333.7031,-81 333.7031,-81 333.7031,-93 333.7031,-93 333.7031,-99 327.7031,-105 321.7031,-105 321.7031,-105 207.5586,-105 207.5586,-105 201.5586,-105 195.5586,-99 195.5586,-93 195.5586,-93 195.5586,-81 195.5586,-81 195.5586,-75 201.5586,-69 207.5586,-69"/>
-<text text-anchor="middle" x="264.6309" y="-82.8" font-family="Helvetica,sans-Serif" font-weight="bold" font-size="14.00" fill="#ff8c00">unknown user key</text>
+<polygon fill="none" stroke="#ff8c00" points="155.7832,-72 155.7832,-108 274.4316,-108 274.4316,-72 155.7832,-72"/>
+<text text-anchor="middle" x="215.1074" y="-85.8" font-family="Times,serif" font-size="14.00" fill="#ff8c00">unknown user key</text>
 </g>
 <!-- start&#45;&gt;unknown_user_key -->
 <g id="edge2" class="edge">
 <title>start&#45;&gt;unknown_user_key</title>
-<path fill="none" stroke="#0000ff" d="M142.2895,-121.9827C161.3902,-116.521 182.3703,-110.5218 201.4801,-105.0575"/>
+<path fill="none" stroke="#0000ff" d="M119.1501,-118.3468C127.968,-115.7419 137.1138,-113.0401 146.1003,-110.3854"/>
+<polygon fill="#0000ff" stroke="#0000ff" points="147.1673,-113.7198 155.766,-107.5301 145.1841,-107.0066 147.1673,-113.7198"/>
 </g>
 <!-- acl_manager -->
 <g id="node5" class="node">
 <title>acl_manager</title>
-<path fill="none" stroke="#ff8c00" d="M608.9287,-173C608.9287,-173 691.7031,-173 691.7031,-173 697.7031,-173 703.7031,-179 703.7031,-185 703.7031,-185 703.7031,-197 703.7031,-197 703.7031,-203 697.7031,-209 691.7031,-209 691.7031,-209 608.9287,-209 608.9287,-209 602.9287,-209 596.9287,-203 596.9287,-197 596.9287,-197 596.9287,-185 596.9287,-185 596.9287,-179 602.9287,-173 608.9287,-173"/>
-<text text-anchor="middle" x="650.3159" y="-186.8" font-family="Helvetica,sans-Serif" font-weight="bold" font-size="14.00" fill="#ff8c00">ACL manager</text>
+<polygon fill="none" stroke="#ff8c00" points="514.7056,-173 514.7056,-209 609.8862,-209 609.8862,-173 514.7056,-173"/>
+<text text-anchor="middle" x="562.2959" y="-186.8" font-family="Times,serif" font-size="14.00" fill="#ff8c00">ACL manager</text>
 </g>
 <!-- known_user_key&#45;&gt;acl_manager -->
 <g id="edge9" class="edge">
 <title>known_user_key&#45;&gt;acl_manager</title>
-<path fill="none" stroke="#ff8c00" d="M325.3184,-180.8882C399.9907,-183.2115 525.6007,-187.1197 596.8147,-189.3354"/>
-<text text-anchor="middle" x="463.3062" y="-190.8" font-family="Helvetica,sans-Serif" font-size="14.00" fill="#ff8c00">user matches an existing host</text>
+<path fill="none" stroke="#ff8c00" d="M267.461,-177.4127C331.1153,-180.3462 438.21,-185.2816 504.3082,-188.3277"/>
+<polygon fill="#ff8c00" stroke="#ff8c00" points="504.401,-191.8356 514.5516,-188.7997 504.7233,-184.843 504.401,-191.8356"/>
+<text text-anchor="middle" x="393.4697" y="-188.8" font-family="Times,serif" font-size="14.00" fill="#ff8c00">user matches an existing host</text>
 </g>
 <!-- builtin_shell -->
 <g id="node6" class="node">
 <title>builtin_shell</title>
-<path fill="none" stroke="#006400" d="M874.6738,-223C874.6738,-223 944.46,-223 944.46,-223 950.46,-223 956.46,-229 956.46,-235 956.46,-235 956.46,-247 956.46,-247 956.46,-253 950.46,-259 944.46,-259 944.46,-259 874.6738,-259 874.6738,-259 868.6738,-259 862.6738,-253 862.6738,-247 862.6738,-247 862.6738,-235 862.6738,-235 862.6738,-229 868.6738,-223 874.6738,-223"/>
-<text text-anchor="middle" x="909.5669" y="-243.8" font-family="Helvetica,sans-Serif" font-weight="bold" font-size="14.00" fill="#006400">built&#45;in</text>
-<text text-anchor="middle" x="909.5669" y="-229.8" font-family="Helvetica,sans-Serif" font-weight="bold" font-size="14.00" fill="#006400">config shell</text>
+<polygon fill="none" stroke="#006400" points="761.6929,-223 761.6929,-259 848.855,-259 848.855,-223 761.6929,-223"/>
+<text text-anchor="middle" x="805.2739" y="-236.8" font-family="Times,serif" font-size="14.00" fill="#006400">built&#45;in shell</text>
 </g>
 <!-- known_user_key&#45;&gt;builtin_shell -->
 <g id="edge6" class="edge">
 <title>known_user_key&#45;&gt;builtin_shell</title>
-<path fill="none" stroke="#006400" d="M325.3695,-196.5059C340.0986,-200.1819 355.8759,-203.652 370.7031,-206 550.8024,-234.5204 768.2909,-239.9067 862.3934,-240.8487"/>
-<text text-anchor="middle" x="650.3159" y="-238.8" font-family="Helvetica,sans-Serif" font-size="14.00" fill="#006400">user=admin</text>
+<path fill="none" stroke="#006400" d="M267.592,-193.0548C281.6792,-197.2785 297.0081,-201.3215 311.4316,-204 469.5409,-233.361 660.2348,-239.5693 751.4965,-240.7835"/>
+<polygon fill="#006400" stroke="#006400" points="751.5568,-244.2844 761.5974,-240.9027 751.6394,-237.2848 751.5568,-244.2844"/>
+<text text-anchor="middle" x="562.2959" y="-238.8" font-family="Times,serif" font-size="14.00" fill="#006400">user=admin</text>
 </g>
 <!-- err_and_exit -->
 <g id="node9" class="node">
 <title>err_and_exit</title>
-<path fill="none" stroke="#ff0000" d="M887.1152,-81C887.1152,-81 932.0186,-81 932.0186,-81 938.0186,-81 944.0186,-87 944.0186,-93 944.0186,-93 944.0186,-137 944.0186,-137 944.0186,-143 938.0186,-149 932.0186,-149 932.0186,-149 887.1152,-149 887.1152,-149 881.1152,-149 875.1152,-143 875.1152,-137 875.1152,-137 875.1152,-93 875.1152,-93 875.1152,-87 881.1152,-81 887.1152,-81"/>
-<text text-anchor="middle" x="909.5669" y="-117.8" font-family="Helvetica,sans-Serif" font-weight="bold" font-size="14.00" fill="#ff0000">error</text>
-<text text-anchor="middle" x="909.5669" y="-103.8" font-family="Helvetica,sans-Serif" font-weight="bold" font-size="14.00" fill="#ff0000">and exit</text>
+<polygon fill="none" stroke="#ff0000" points="759.5703,-106 759.5703,-142 850.9775,-142 850.9775,-106 759.5703,-106"/>
+<text text-anchor="middle" x="805.2739" y="-119.8" font-family="Times,serif" font-size="14.00" fill="#ff0000">error and exit</text>
 </g>
 <!-- known_user_key&#45;&gt;err_and_exit -->
 <g id="edge11" class="edge">
 <title>known_user_key&#45;&gt;err_and_exit</title>
-<path fill="none" stroke="#ff0000" d="M325.3049,-172.979C457.9451,-159.8165 770.2119,-128.8288 874.7656,-118.4535"/>
-<text text-anchor="middle" x="650.3159" y="-148.8" font-family="Helvetica,sans-Serif" font-size="14.00" fill="#ff0000">invalid user</text>
+<path fill="none" stroke="#ff0000" d="M267.4808,-170.4741C378.1362,-160.9117 634.8943,-138.7236 748.9418,-128.868"/>
+<polygon fill="#ff0000" stroke="#ff0000" points="749.5354,-132.3298 759.1969,-127.9818 748.9327,-125.3558 749.5354,-132.3298"/>
+<text text-anchor="middle" x="562.2959" y="-151.8" font-family="Times,serif" font-size="14.00" fill="#ff0000">invalid user</text>
 </g>
 <!-- invite_manager -->
 <g id="node4" class="node">
 <title>invite_manager</title>
-<path fill="none" stroke="#ff8c00" d="M604.9092,-17C604.9092,-17 695.7227,-17 695.7227,-17 701.7227,-17 707.7227,-23 707.7227,-29 707.7227,-29 707.7227,-41 707.7227,-41 707.7227,-47 701.7227,-53 695.7227,-53 695.7227,-53 604.9092,-53 604.9092,-53 598.9092,-53 592.9092,-47 592.9092,-41 592.9092,-41 592.9092,-29 592.9092,-29 592.9092,-23 598.9092,-17 604.9092,-17"/>
-<text text-anchor="middle" x="650.3159" y="-30.8" font-family="Helvetica,sans-Serif" font-weight="bold" font-size="14.00" fill="#ff8c00">invite manager</text>
+<polygon fill="none" stroke="#ff8c00" points="512.5078,-17 512.5078,-53 612.084,-53 612.084,-17 512.5078,-17"/>
+<text text-anchor="middle" x="562.2959" y="-30.8" font-family="Times,serif" font-size="14.00" fill="#ff8c00">invite manager</text>
 </g>
 <!-- unknown_user_key&#45;&gt;invite_manager -->
 <g id="edge10" class="edge">
 <title>unknown_user_key&#45;&gt;invite_manager</title>
-<path fill="none" stroke="#ff8c00" d="M334.0291,-77.6434C407.9842,-67.6724 523.7263,-52.0674 592.789,-42.7561"/>
-<text text-anchor="middle" x="463.3062" y="-74.8" font-family="Helvetica,sans-Serif" font-size="14.00" fill="#ff8c00">user=invite:&lt;token&gt;</text>
+<path fill="none" stroke="#ff8c00" d="M274.7912,-80.5452C338.467,-70.4579 438.7527,-54.5711 502.4793,-44.4759"/>
+<polygon fill="#ff8c00" stroke="#ff8c00" points="503.0528,-47.9288 512.382,-42.9071 501.9575,-41.015 503.0528,-47.9288"/>
+<text text-anchor="middle" x="455.4386" y="-31.7071" font-family="Times,serif" font-size="14.00" fill="#ff8c00">user=invite:&lt;token&gt;</text>
 </g>
 <!-- unknown_user_key&#45;&gt;err_and_exit -->
 <g id="edge13" class="edge">
 <title>unknown_user_key&#45;&gt;err_and_exit</title>
-<path fill="none" stroke="#ff0000" d="M333.7181,-89.2908C439.591,-92.8626 637.1209,-99.7853 707.7227,-104 724.1917,-104.9832 728.2588,-105.9333 744.7227,-107 789.6129,-109.9084 841.4427,-112.2584 874.8164,-113.641"/>
-<text text-anchor="middle" x="650.3159" y="-106.8" font-family="Helvetica,sans-Serif" font-size="14.00" fill="#ff0000">any other user</text>
+<path fill="none" stroke="#ff0000" d="M274.4978,-89.2935C352.2933,-89.0083 492.8294,-90.6942 612.084,-104 628.7169,-105.8558 632.5001,-108.7473 649.084,-111 682.1267,-115.4884 719.327,-118.6586 749.132,-120.7442"/>
+<polygon fill="#ff0000" stroke="#ff0000" points="749.133,-124.2522 759.347,-121.437 749.6068,-117.2683 749.133,-124.2522"/>
+<text text-anchor="middle" x="562.2959" y="-106.8" font-family="Times,serif" font-size="14.00" fill="#ff0000">any other user</text>
 </g>
 <!-- learn_key -->
 <g id="node8" class="node">
 <title>learn_key</title>
-<path fill="none" stroke="#006400" d="M884.3911,-17C884.3911,-17 934.7427,-17 934.7427,-17 940.7427,-17 946.7427,-23 946.7427,-29 946.7427,-29 946.7427,-41 946.7427,-41 946.7427,-47 940.7427,-53 934.7427,-53 934.7427,-53 884.3911,-53 884.3911,-53 878.3911,-53 872.3911,-47 872.3911,-41 872.3911,-41 872.3911,-29 872.3911,-29 872.3911,-23 878.3911,-17 884.3911,-17"/>
-<text text-anchor="middle" x="909.5669" y="-37.8" font-family="Helvetica,sans-Serif" font-weight="bold" font-size="14.00" fill="#006400">learn the</text>
-<text text-anchor="middle" x="909.5669" y="-23.8" font-family="Helvetica,sans-Serif" font-weight="bold" font-size="14.00" fill="#006400">pub key</text>
+<polygon fill="none" stroke="#006400" points="771.4272,-17 771.4272,-53 839.1206,-53 839.1206,-17 771.4272,-17"/>
+<text text-anchor="middle" x="805.2739" y="-30.8" font-family="Times,serif" font-size="14.00" fill="#006400">learn key</text>
 </g>
 <!-- invite_manager&#45;&gt;learn_key -->
 <g id="edge8" class="edge">
 <title>invite_manager&#45;&gt;learn_key</title>
-<path fill="none" stroke="#006400" d="M707.8521,-35C757.9748,-35 829.1828,-35 872.2155,-35"/>
-<text text-anchor="middle" x="785.1982" y="-37.8" font-family="Helvetica,sans-Serif" font-size="14.00" fill="#006400">valid token</text>
+<path fill="none" stroke="#006400" d="M612.3465,-35C656.1463,-35 719.1598,-35 761.1155,-35"/>
+<polygon fill="#006400" stroke="#006400" points="761.3041,-38.5001 771.3041,-35 761.304,-31.5001 761.3041,-38.5001"/>
+<text text-anchor="middle" x="685.8271" y="-37.8" font-family="Times,serif" font-size="14.00" fill="#006400">valid token</text>
 </g>
 <!-- invite_manager&#45;&gt;err_and_exit -->
 <g id="edge14" class="edge">
 <title>invite_manager&#45;&gt;err_and_exit</title>
-<path fill="none" stroke="#ff0000" d="M707.8521,-52.7546C759.019,-68.5437 832.1589,-91.1133 874.868,-104.2926"/>
-<text text-anchor="middle" x="785.1982" y="-91.8" font-family="Helvetica,sans-Serif" font-size="14.00" fill="#ff0000">invalid token</text>
+<path fill="none" stroke="#ff0000" d="M611.4661,-53.0105C651.6045,-67.7127 708.3017,-88.4802 750.0066,-103.7562"/>
+<polygon fill="#ff0000" stroke="#ff0000" points="748.8708,-107.0676 759.4646,-107.2206 751.2785,-100.4946 748.8708,-107.0676"/>
+<text text-anchor="middle" x="685.8271" y="-95.8" font-family="Times,serif" font-size="14.00" fill="#ff0000">invalid token</text>
 </g>
 <!-- ssh_proxy -->
 <g id="node7" class="node">
 <title>ssh_proxy</title>
-<path fill="none" stroke="#006400" d="M877.0117,-168C877.0117,-168 942.1221,-168 942.1221,-168 948.1221,-168 954.1221,-174 954.1221,-180 954.1221,-180 954.1221,-192 954.1221,-192 954.1221,-198 948.1221,-204 942.1221,-204 942.1221,-204 877.0117,-204 877.0117,-204 871.0117,-204 865.0117,-198 865.0117,-192 865.0117,-192 865.0117,-180 865.0117,-180 865.0117,-174 871.0117,-168 877.0117,-168"/>
-<text text-anchor="middle" x="909.5669" y="-188.8" font-family="Helvetica,sans-Serif" font-weight="bold" font-size="14.00" fill="#006400">SSH proxy</text>
-<text text-anchor="middle" x="909.5669" y="-174.8" font-family="Helvetica,sans-Serif" font-weight="bold" font-size="14.00" fill="#006400">Jump&#45;Host</text>
+<polygon fill="none" stroke="#006400" points="766.3516,-168 766.3516,-204 844.1963,-204 844.1963,-168 766.3516,-168"/>
+<text text-anchor="middle" x="805.2739" y="-181.8" font-family="Times,serif" font-size="14.00" fill="#006400">SSH proxy</text>
 </g>
 <!-- acl_manager&#45;&gt;ssh_proxy -->
 <g id="edge7" class="edge">
 <title>acl_manager&#45;&gt;ssh_proxy</title>
-<path fill="none" stroke="#006400" d="M704.0566,-192.4569C738.7694,-193.1138 784.9041,-193.4561 825.6738,-192 838.3694,-191.5466 852.1251,-190.7084 864.7541,-189.7993"/>
-<text text-anchor="middle" x="785.1982" y="-195.8" font-family="Helvetica,sans-Serif" font-size="14.00" fill="#006400">authorized</text>
+<path fill="none" stroke="#006400" d="M610.0008,-192.3563C641.8818,-193.0022 684.7518,-193.37 722.5703,-192 733.3636,-191.609 744.9337,-190.9319 755.8983,-190.1699"/>
+<polygon fill="#006400" stroke="#006400" points="756.4612,-193.6382 766.18,-189.4199 755.9519,-186.6568 756.4612,-193.6382"/>
+<text text-anchor="middle" x="685.8271" y="-194.8" font-family="Times,serif" font-size="14.00" fill="#006400">authorized</text>
 </g>
 <!-- acl_manager&#45;&gt;err_and_exit -->
 <g id="edge12" class="edge">
 <title>acl_manager&#45;&gt;err_and_exit</title>
-<path fill="none" stroke="#ff0000" d="M703.7163,-179.7682C743.1076,-170.9461 797.7781,-157.5732 844.6738,-142 854.6331,-138.6927 865.2245,-134.5604 874.8992,-130.5307"/>
-<text text-anchor="middle" x="785.1982" y="-172.8" font-family="Helvetica,sans-Serif" font-size="14.00" fill="#ff0000">unauthorized</text>
+<path fill="none" stroke="#ff0000" d="M610.264,-178.009C646.3866,-168.197 697.1155,-154.3556 741.5703,-142 744.1794,-141.2748 746.8478,-140.5307 749.5426,-139.7772"/>
+<polygon fill="#ff0000" stroke="#ff0000" points="750.6733,-143.0952 759.3567,-137.025 748.7831,-136.3552 750.6733,-143.0952"/>
+<text text-anchor="middle" x="685.8271" y="-169.8" font-family="Times,serif" font-size="14.00" fill="#ff0000">unauthorized</text>
 </g>
 <!-- host_1 -->
 <g id="node10" class="node">
 <title>host_1</title>
-<path fill="none" stroke="#0000ff" d="M1024.5425,-223C1024.5425,-223 1094.7456,-223 1094.7456,-223 1100.7456,-223 1106.7456,-229 1106.7456,-235 1106.7456,-235 1106.7456,-247 1106.7456,-247 1106.7456,-253 1100.7456,-259 1094.7456,-259 1094.7456,-259 1024.5425,-259 1024.5425,-259 1018.5425,-259 1012.5425,-253 1012.5425,-247 1012.5425,-247 1012.5425,-235 1012.5425,-235 1012.5425,-229 1018.5425,-223 1024.5425,-223"/>
-<text text-anchor="middle" x="1059.644" y="-236.8" font-family="Helvetica,sans-Serif" font-weight="bold" font-size="14.00" fill="#0000ff">root@host1</text>
+<polygon fill="none" stroke="#0000ff" points="904.3086,-223 904.3086,-259 986.0908,-259 986.0908,-223 904.3086,-223"/>
+<text text-anchor="middle" x="945.1997" y="-236.8" font-family="Times,serif" font-size="14.00" fill="#0000ff">root@host1</text>
 </g>
 <!-- ssh_proxy&#45;&gt;host_1 -->
 <g id="edge3" class="edge">
 <title>ssh_proxy&#45;&gt;host_1</title>
-<path fill="none" stroke="#0000ff" d="M954.5012,-202.6151C964.678,-206.3678 975.4382,-210.3275 985.46,-214 994.2108,-217.2067 1003.5469,-220.6149 1012.54,-223.8913"/>
+<path fill="none" stroke="#0000ff" d="M844.2511,-201.3206C859.7986,-207.4318 877.9046,-214.5486 894.4551,-221.054"/>
+<polygon fill="#0000ff" stroke="#0000ff" points="893.4017,-224.4006 903.9889,-224.8015 895.9624,-217.8858 893.4017,-224.4006"/>
 </g>
 <!-- host_2 -->
 <g id="node11" class="node">
 <title>host_2</title>
-<path fill="none" stroke="#0000ff" d="M1005.46,-168C1005.46,-168 1113.8281,-168 1113.8281,-168 1119.8281,-168 1125.8281,-174 1125.8281,-180 1125.8281,-180 1125.8281,-192 1125.8281,-192 1125.8281,-198 1119.8281,-204 1113.8281,-204 1113.8281,-204 1005.46,-204 1005.46,-204 999.46,-204 993.46,-198 993.46,-192 993.46,-192 993.46,-180 993.46,-180 993.46,-174 999.46,-168 1005.46,-168"/>
-<text text-anchor="middle" x="1059.644" y="-181.8" font-family="Helvetica,sans-Serif" font-weight="bold" font-size="14.00" fill="#0000ff">user@host2:2222</text>
+<polygon fill="none" stroke="#0000ff" points="887.9775,-168 887.9775,-204 1002.4219,-204 1002.4219,-168 887.9775,-168"/>
+<text text-anchor="middle" x="945.1997" y="-181.8" font-family="Times,serif" font-size="14.00" fill="#0000ff">user@host2:2222</text>
 </g>
 <!-- ssh_proxy&#45;&gt;host_2 -->
 <g id="edge4" class="edge">
 <title>ssh_proxy&#45;&gt;host_2</title>
-<path fill="none" stroke="#0000ff" d="M954.1887,-186C966.458,-186 980.0332,-186 993.2463,-186"/>
+<path fill="none" stroke="#0000ff" d="M844.2511,-186C854.6959,-186 866.2954,-186 877.8023,-186"/>
+<polygon fill="#0000ff" stroke="#0000ff" points="877.8592,-189.5001 887.8591,-186 877.8591,-182.5001 877.8592,-189.5001"/>
 </g>
 <!-- host_3 -->
 <g id="node12" class="node">
 <title>host_3</title>
-<path fill="none" stroke="#0000ff" d="M1006.6392,-113C1006.6392,-113 1112.6489,-113 1112.6489,-113 1118.6489,-113 1124.6489,-119 1124.6489,-125 1124.6489,-125 1124.6489,-137 1124.6489,-137 1124.6489,-143 1118.6489,-149 1112.6489,-149 1112.6489,-149 1006.6392,-149 1006.6392,-149 1000.6392,-149 994.6392,-143 994.6392,-137 994.6392,-137 994.6392,-125 994.6392,-125 994.6392,-119 1000.6392,-113 1006.6392,-113"/>
-<text text-anchor="middle" x="1059.644" y="-126.8" font-family="Helvetica,sans-Serif" font-weight="bold" font-size="14.00" fill="#0000ff">root@host3:1234</text>
+<polygon fill="none" stroke="#0000ff" points="888.3638,-113 888.3638,-149 1002.0356,-149 1002.0356,-113 888.3638,-113"/>
+<text text-anchor="middle" x="945.1997" y="-126.8" font-family="Times,serif" font-size="14.00" fill="#0000ff">root@host3:1234</text>
 </g>
 <!-- ssh_proxy&#45;&gt;host_3 -->
 <g id="edge5" class="edge">
 <title>ssh_proxy&#45;&gt;host_3</title>
-<path fill="none" stroke="#0000ff" d="M954.1887,-169.6471C971.9014,-163.1558 992.3359,-155.667 1010.4731,-149.0201"/>
+<path fill="none" stroke="#0000ff" d="M844.2511,-170.6794C858.381,-165.1255 874.624,-158.7409 889.8921,-152.7395"/>
+<polygon fill="#0000ff" stroke="#0000ff" points="891.2185,-155.9789 899.245,-149.0632 888.6578,-149.4641 891.2185,-155.9789"/>
 </g>
 </g>
 </svg>
--- a/.assets/overview.png
+++ b/.assets/overview.png
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -1,7 +1,7 @@
 defaults: &defaults
  working_directory: /go/src/moul.io/sshportal
  docker:
-    - image: circleci/golang:1.14.4
+    - image: circleci/golang:1.11
  environment:
    GO111MODULE: "on"

@@ -16,6 +16,18 @@ 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:
@@ -24,7 +36,7 @@ jobs:
          name: Install Docker Compose
          command: |
            umask 022
-            curl -L https://github.com/docker/compose/releases/download/1.11.4/docker-compose-`uname -s`-`uname -m` > ~/docker-compose
+            curl -L https://github.com/docker/compose/releases/download/1.11.2/docker-compose-`uname -s`-`uname -m` > ~/docker-compose
      - setup_remote_docker:
          docker_layer_caching: true
      - *install_retry
@@ -36,4 +48,6 @@ workflows:
  version: 2
  build_and_integration:
    jobs:
+      - go.build
      - docker.integration
+      # requires: docker.build?
--- a/.dockerignore
+++ b/.dockerignore
@@ -1,5 +1,3 @@
-# .git/  # should be kept for git-based versionning
-
 examples/
 .circleci/
 .assets/
--- a/.github/FUNDING.yml
+++ b/.github/FUNDING.yml
@@ -1,6 +0,0 @@
-github: ["moul"]
-patreon: moul
-open_collective: sshportal
-custom:
- "https://www.buymeacoffee.com/moul"
- "https://manfred.life/donate"
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1,88 +0,0 @@
-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@v0.1.7
-        with:
-          version: v1.26
-          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:
-          #- 1.13
-          - 1.14
-    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:
-          - 1.14
-    steps:
-      - uses: actions/checkout@v2
-      - name: Install Go
-        uses: actions/setup-go@v2
-        with:
-          go-version: ${{ matrix.golang }}
-      - uses: actions/cache@v1
-        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:
-          - 1.11
-          - 1.12
-          - 1.13
-          - 1.14
-    steps:
-      - uses: actions/checkout@v2
-      - name: Install Go
-        uses: actions/setup-go@v2
-        with:
-          go-version: ${{ matrix.golang }}
-      - uses: actions/cache@v1
-        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
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -1,13 +0,0 @@
-name: Semantic Release
-
-on: push
-
-jobs:
-  semantic-release:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@master
-      - uses: codfish/semantic-release-action@v1
-        if: github.ref == 'refs/heads/master'
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
--- a/.gitignore
+++ b/.gitignore
@@ -1,9 +1,3 @@
-coverage.txt
-dist/
-*~
-*#
-.*#
-.DS_Store
 /log/
 /sshportal
 *.db
--- a/.golangci.yml
+++ b/.golangci.yml
@@ -1,10 +1,8 @@
 run:
  deadline: 1m
  tests: false
-  skip-files:
-    - "testing.go"
-    - ".*\\.pb\\.go"
-    - ".*\\.gen\\.go"
+  #skip-files:
+  #  - ".*\\.gen\\.go"

 linters-settings:
  golint:
@@ -20,36 +18,17 @@ linters-settings:
 linters:
  disable-all: true
  enable:
-    - bodyclose
-    - deadcode
-    - depguard
-    - dogsled
-    #- dupl
-    - errcheck
-    #- funlen
-    - gochecknoinits
-    #- gocognit
    - goconst
-    - gocritic
-    #- gocyclo
+    - misspell
+    - deadcode
+    - misspell
+    - structcheck
+    - errcheck
+    - unused
+    - varcheck
+    - staticcheck
+    - unconvert
    - gofmt
    - goimports
    - golint
-    - gosimple
-    - govet
    - ineffassign
-    - interfacer
-    #- maligned
-    - misspell
-    - nakedret
-    - prealloc
-    - scopelint
-    - staticcheck
-    - structcheck
-    #- stylecheck
-    - typecheck
-    - unconvert
-    - unparam
-    - unused
-    - varcheck
-    - whitespace
--- a/.goreleaser.yml
+++ b/.goreleaser.yml
@@ -1,29 +0,0 @@
-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"
--- a/.releaserc.js
+++ b/.releaserc.js
@@ -1,8 +0,0 @@
-module.exports = {
-    branch: 'master',
-    plugins: [
-        '@semantic-release/commit-analyzer',
-        '@semantic-release/release-notes-generator',
-        '@semantic-release/github',
-    ],
-};
--- a/29
+++ b/29
@@ -1,29 +0,0 @@
-# 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>
-fossabot <badges@fossa.io>
-Jean-Louis Férey <jeanlouis.ferey@orange.com>
-Jess <jessachandler@gmail.com>
-Jonathan Lestrelin <jonathan.lestrelin@gmail.com>
-Julien Dessaux <julien.dessaux@adyxax.org>
-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>
-Mikael Rapp <micke.rapp@gmail.com>
-MitaliBo <mitali.bisht14@gmail.com>
-Nelly Asher <karmelylle@rambler.ru>
-NocFlame <aad@nocflame.se>
-Quentin Perez <qperez42@gmail.com>
-Renovate Bot <bot@renovateapp.com>
-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>
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,21 +2,7 @@

 ## master (unreleased)

-* No entry
-
-## v1.10.0 (2019-06-24)
-
-* Bump deps, now using github.com/gliderlabs/ssh upstream
-* Fix Windows build ([#101](https://github.com/moul/sshportal/pull/101)) by [@Raerten](https://github.com/Raerten)
-* Use environment variables for settings ([#98](https://github.com/moul/sshportal/pull/98)) by [@Raerten](https://github.com/Raerten)
-* Fix 'userkey create' ([#111](https://github.com/moul/sshportal/pull/111)) by [@shawn111](https://github.com/shawn111)
-* Set log files mode to 440 instead of 640 ([#134](https://github.com/moul/sshportal/pull/134)) by [@jle64](https://github.com/jle64)
-* Allow to create a host using an IP as name ([#135](https://github.com/moul/sshportal/pull/135)) by [@jle64](https://github.com/jle64)
-* Add username and session ID to session log filename ([#133](https://github.com/moul/sshportal/pull/133)) by [@jle64](https://github.com/jle64)
-* Unable to use encrypted SSH private keys ([#124](https://github.com/moul/sshportal/pull/124)) by [@welderpb](https://github.com/welderpb)
-* Fix format of ID in new session + closing channel if host is unreachable ([#123](https://github.com/moul/sshportal/pull/123)) by [@vdaviot](https://github.com/vdaviot)
-* Refactor the main package with a focus on splitting up into packages ([#113](https://github.com/moul/sshportal/pull/113)) by [@ahamidullah](https://github.com/ahamidullah)
-
+* Bump deps

 ## v1.9.0 (2018-11-18)

--- a/7
+++ b/7
@@ -1,10 +1,7 @@
 # build
-FROM golang:1.14.4 as builder
-ENV             GO111MODULE=on
+FROM            golang:1.11 as builder
+COPY            . /go/src/moul.io/sshportal
 WORKDIR         /go/src/moul.io/sshportal
-COPY            go.mod go.sum ./
-RUN             go mod download
-COPY            . ./
 RUN             make _docker_install

 # minimal runtime
--- a/47
+++ b/47
@@ -1,15 +1,18 @@
-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)"
-
-include rules.mk
-
-DB_VERSION ?=	v$(shell grep -E 'ID: "[0-9]+",' pkg/bastion/dbinit.go | tail -n 1 | cut -d'"' -f2)
+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)
 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:
@@ -24,23 +27,21 @@ 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)-$(DB_VERSION)-sshportal.sqlite
+	cp sshportal.db data/backups/$(shell date +%s)-$(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
--- a/README.md
+++ b/README.md
@@ -1,43 +1,65 @@
 # sshportal

 [![CircleCI](https://circleci.com/gh/moul/sshportal.svg?style=svg)](https://circleci.com/gh/moul/sshportal)
-[![Go Report Card](https://goreportcard.com/badge/moul.io/sshportal)](https://goreportcard.com/report/moul.io/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)
 [![GoDoc](https://godoc.org/moul.io/sshportal?status.svg)](https://godoc.org/moul.io/sshportal)
-[![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)
+[![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)
-<!-- temporarily broken? [![Docker Build Status](https://img.shields.io/docker/build/moul/sshportal.svg)](https://hub.docker.com/r/moul/sshportal/) -->
+[![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)

 Jump host/Jump server without the jump, a.k.a Transparent SSH bastion

-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)
+![sshportal demo](https://github.com/moul/sshportal/raw/master/.assets/demo.gif)

 ---

-## Contents
+## Overview

-<!-- toc -->
+![sshportal overview](https://raw.github.com/moul/sshportal/master/.assets/overview.svg?sanitize=true)

- [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)
+## Features

-<!-- tocstop -->
+* 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

---
+## (Known) limitations

-## Installation and usage
+* Does not work (yet?) with [`mosh`](https://mosh.org/)
+
+## Usage

 Start the server

@@ -58,8 +80,6 @@ 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
@@ -119,159 +139,15 @@ To associate this account with a key, use the following SSH user: 'invite:NfHK5a
 config>
 ```

-Demo gif:
-![sshportal demo](https://github.com/moul/sshportal/raw/master/.assets/demo.gif)
+## Flow Diagram

---
-
-## 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
-```
-
---
+![Flow Diagram](https://raw.github.com/moul/sshportal/master/.assets/flow-diagram.svg?sanitize=true)

 ## 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. The shell is also accessible through `ssh [username]@portal.example.org`.
+By default, the configuration user is `admin`, (can be changed using `--config-user=<value>` when starting the server.

 Each commands can be run directly by using this syntax: `ssh admin@portal.example.org <command> [args]`:

@@ -281,29 +157,7 @@ ssh admin@portal.example.org host inspect toto

 You can enter in interactive mode using this syntax: `ssh admin@portal.example.org`

-![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
+### Synopsis

 ```sh
 # acl management
@@ -376,7 +230,120 @@ 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

@@ -410,33 +377,6 @@ $ 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.
@@ -445,12 +385,10 @@ 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.png)
+![sshportal cluster with MySQL backend](https://raw.github.com/moul/sshportal/master/.assets/cluster-mysql.svg?sanitize=true)

 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)
@@ -468,34 +406,12 @@ 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.png)
+![sshportal data model](https://raw.github.com/moul/sshportal/master/.assets/sql-schema.svg?sanitize=true)

-## Contributors
+## Note

-### Code Contributors
+This is totally experimental for now, so please file issues to let me know what you think about it!

-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>
+## 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)
--- a/_config.yml
+++ b/_config.yml
@@ -1 +0,0 @@
-theme: jekyll-theme-slate
--- a/acl.go
+++ b/acl.go
@@ -0,0 +1,40 @@
+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
+}
--- a/acl_test.go
+++ b/acl_test.go
@@ -0,0 +1,47 @@
+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)
+	})
+}
--- a/config.go
+++ b/config.go
@@ -0,0 +1,52 @@
+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
+}
--- a/pkg/crypto/crypto.go
+++ b/pkg/crypto/crypto.go
@@ -1,4 +1,4 @@
-package crypto // import "moul.io/sshportal/pkg/crypto"
+package main

 import (
 	"bytes"
@@ -15,11 +15,10 @@ import (
 	"strings"

 	gossh "golang.org/x/crypto/ssh"
-	"moul.io/sshportal/pkg/dbmodels"
 )

-func NewSSHKey(keyType string, length uint) (*dbmodels.SSHKey, error) {
-	key := dbmodels.SSHKey{
+func NewSSHKey(keyType string, length uint) (*SSHKey, error) {
+	key := SSHKey{
 		Type:   keyType,
 		Length: length,
 	}
@@ -54,8 +53,8 @@ func NewSSHKey(keyType string, length uint) (*dbmodels.SSHKey, error) {
 	return &key, nil
 }

-func ImportSSHKey(keyValue string) (*dbmodels.SSHKey, error) {
-	key := dbmodels.SSHKey{
+func ImportSSHKey(keyValue string) (*SSHKey, error) {
+	key := SSHKey{
 		Type: "rsa",
 	}

@@ -133,7 +132,7 @@ func safeDecrypt(key []byte, cryptoText string) string {
 	return out
 }

-func HostEncrypt(aesKey string, host *dbmodels.Host) (err error) {
+func HostEncrypt(aesKey string, host *Host) (err error) {
 	if aesKey == "" {
 		return nil
 	}
@@ -142,7 +141,7 @@ func HostEncrypt(aesKey string, host *dbmodels.Host) (err error) {
 	}
 	return
 }
-func HostDecrypt(aesKey string, host *dbmodels.Host) {
+func HostDecrypt(aesKey string, host *Host) {
 	if aesKey == "" {
 		return
 	}
@@ -151,14 +150,14 @@ func HostDecrypt(aesKey string, host *dbmodels.Host) {
 	}
 }

-func SSHKeyEncrypt(aesKey string, key *dbmodels.SSHKey) (err error) {
+func SSHKeyEncrypt(aesKey string, key *SSHKey) (err error) {
 	if aesKey == "" {
 		return nil
 	}
 	key.PrivKey, err = encrypt([]byte(aesKey), key.PrivKey)
 	return
 }
-func SSHKeyDecrypt(aesKey string, key *dbmodels.SSHKey) {
+func SSHKeyDecrypt(aesKey string, key *SSHKey) {
 	if aesKey == "" {
 		return
 	}
--- a/pkg/dbmodels/dbmodels.go
+++ b/pkg/dbmodels/dbmodels.go
@@ -1,14 +1,16 @@
-package dbmodels // import "moul.io/sshportal/pkg/dbmodels"
+package main

 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"
 )
@@ -51,7 +53,7 @@ type SSHKey struct {
 type Host struct {
 	// FIXME: use uuid for ID
 	gorm.Model
-	Name     string       `gorm:"size:32" valid:"required,length(1|32)"`
+	Name     string       `gorm:"size:32" valid:"required,length(1|32),unix_user"`
 	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
@@ -68,7 +70,7 @@ 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:"length(1|10000)"`
+	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"`
@@ -164,8 +166,30 @@ 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
+		}
+		return unixUserRegexp.MatchString(name)
+	}))
+}
+
 // 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())
 }
@@ -277,7 +301,7 @@ 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,
--- a/pkg/bastion/dbinit.go
+++ b/pkg/bastion/dbinit.go
@@ -1,23 +1,20 @@
-package bastion // import "moul.io/sshportal/pkg/bastion"
+package main

 import (
 	"fmt"
 	"io/ioutil"
 	"log"
-	"math/rand"
 	"os"
 	"os/user"
 	"strings"
 	"time"

+	"github.com/go-gormigrate/gormigrate"
 	"github.com/jinzhu/gorm"
 	gossh "golang.org/x/crypto/ssh"
-	gormigrate "gopkg.in/gormigrate.v1"
-	"moul.io/sshportal/pkg/crypto"
-	"moul.io/sshportal/pkg/dbmodels"
 )

-func DBInit(db *gorm.DB) error {
+func dbInit(db *gorm.DB) error {
 	log.SetOutput(ioutil.Discard)
 	db.Callback().Delete().Replace("gorm:delete", hardDeleteCallback)
 	log.SetOutput(os.Stderr)
@@ -46,9 +43,9 @@ func DBInit(db *gorm.DB) error {
 					Type        string
 					Length      uint
 					Fingerprint string
-					PrivKey     string           `sql:"size:10000"`
-					PubKey      string           `sql:"size:10000"`
-					Hosts       []*dbmodels.Host `gorm:"ForeignKey:SSHKeyID"`
+					PrivKey     string  `sql:"size:10000"`
+					PubKey      string  `sql:"size:10000"`
+					Hosts       []*Host `gorm:"ForeignKey:SSHKeyID"`
 					Comment     string
 				}
 				return tx.AutoMigrate(&SSHKey{}).Error
@@ -66,9 +63,9 @@ func DBInit(db *gorm.DB) error {
 					Addr        string
 					User        string
 					Password    string
-					SSHKey      *dbmodels.SSHKey      `gorm:"ForeignKey:SSHKeyID"`
-					SSHKeyID    uint                  `gorm:"index"`
-					Groups      []*dbmodels.HostGroup `gorm:"many2many:host_host_groups;"`
+					SSHKey      *SSHKey      `gorm:"ForeignKey:SSHKeyID"`
+					SSHKeyID    uint         `gorm:"index"`
+					Groups      []*HostGroup `gorm:"many2many:host_host_groups;"`
 					Fingerprint string
 					Comment     string
 				}
@@ -82,9 +79,9 @@ func DBInit(db *gorm.DB) error {
 			Migrate: func(tx *gorm.DB) error {
 				type UserKey struct {
 					gorm.Model
-					Key     []byte         `sql:"size:10000"`
-					UserID  uint           ``
-					User    *dbmodels.User `gorm:"ForeignKey:UserID"`
+					Key     []byte `sql:"size:10000"`
+					UserID  uint   ``
+					User    *User  `gorm:"ForeignKey:UserID"`
 					Comment string
 				}
 				return tx.AutoMigrate(&UserKey{}).Error
@@ -101,8 +98,8 @@ func DBInit(db *gorm.DB) error {
 					IsAdmin     bool
 					Email       string
 					Name        string
-					Keys        []*dbmodels.UserKey   `gorm:"ForeignKey:UserID"`
-					Groups      []*dbmodels.UserGroup `gorm:"many2many:user_user_groups;"`
+					Keys        []*UserKey   `gorm:"ForeignKey:UserID"`
+					Groups      []*UserGroup `gorm:"many2many:user_user_groups;"`
 					Comment     string
 					InviteToken string
 				}
@@ -117,8 +114,8 @@ func DBInit(db *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;"`
+					Users   []*User `gorm:"many2many:user_user_groups;"`
+					ACLs    []*ACL  `gorm:"many2many:user_group_acls;"`
 					Comment string
 				}
 				return tx.AutoMigrate(&UserGroup{}).Error
@@ -132,8 +129,8 @@ func DBInit(db *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;"`
+					Hosts   []*Host `gorm:"many2many:host_host_groups;"`
+					ACLs    []*ACL  `gorm:"many2many:host_group_acls;"`
 					Comment string
 				}
 				return tx.AutoMigrate(&HostGroup{}).Error
@@ -146,8 +143,8 @@ func DBInit(db *gorm.DB) error {
 			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;"`
+					HostGroups  []*HostGroup `gorm:"many2many:host_group_acls;"`
+					UserGroups  []*UserGroup `gorm:"many2many:user_group_acls;"`
 					HostPattern string
 					Action      string
 					Weight      uint
@@ -162,64 +159,64 @@ func DBInit(db *gorm.DB) error {
 		}, {
 			ID: "9",
 			Migrate: func(tx *gorm.DB) error {
-				db.Model(&dbmodels.Setting{}).RemoveIndex("uix_settings_name")
-				return db.Model(&dbmodels.Setting{}).AddUniqueIndex("uix_settings_name", "name").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(&dbmodels.Setting{}).RemoveIndex("uix_settings_name").Error
+				return db.Model(&Setting{}).RemoveIndex("uix_settings_name").Error
 			},
 		}, {
 			ID: "10",
 			Migrate: func(tx *gorm.DB) error {
-				db.Model(&dbmodels.SSHKey{}).RemoveIndex("uix_keys_name")
-				return db.Model(&dbmodels.SSHKey{}).AddUniqueIndex("uix_keys_name", "name").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(&dbmodels.SSHKey{}).RemoveIndex("uix_keys_name").Error
+				return db.Model(&SSHKey{}).RemoveIndex("uix_keys_name").Error
 			},
 		}, {
 			ID: "11",
 			Migrate: func(tx *gorm.DB) error {
-				db.Model(&dbmodels.Host{}).RemoveIndex("uix_hosts_name")
-				return db.Model(&dbmodels.Host{}).AddUniqueIndex("uix_hosts_name", "name").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(&dbmodels.Host{}).RemoveIndex("uix_hosts_name").Error
+				return db.Model(&Host{}).RemoveIndex("uix_hosts_name").Error
 			},
 		}, {
 			ID: "12",
 			Migrate: func(tx *gorm.DB) error {
-				db.Model(&dbmodels.User{}).RemoveIndex("uix_users_name")
-				return db.Model(&dbmodels.User{}).AddUniqueIndex("uix_users_name", "name").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(&dbmodels.User{}).RemoveIndex("uix_users_name").Error
+				return db.Model(&User{}).RemoveIndex("uix_users_name").Error
 			},
 		}, {
 			ID: "13",
 			Migrate: func(tx *gorm.DB) error {
-				db.Model(&dbmodels.UserGroup{}).RemoveIndex("uix_usergroups_name")
-				return db.Model(&dbmodels.UserGroup{}).AddUniqueIndex("uix_usergroups_name", "name").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(&dbmodels.UserGroup{}).RemoveIndex("uix_usergroups_name").Error
+				return db.Model(&UserGroup{}).RemoveIndex("uix_usergroups_name").Error
 			},
 		}, {
 			ID: "14",
 			Migrate: func(tx *gorm.DB) error {
-				db.Model(&dbmodels.HostGroup{}).RemoveIndex("uix_hostgroups_name")
-				return db.Model(&dbmodels.HostGroup{}).AddUniqueIndex("uix_hostgroups_name", "name").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(&dbmodels.HostGroup{}).RemoveIndex("uix_hostgroups_name").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 []*dbmodels.User `gorm:"many2many:user_user_roles"`
+					Name  string  `valid:"required,length(1|32),unix_user"`
+					Users []*User `gorm:"many2many:user_user_roles"`
 				}
 				return tx.AutoMigrate(&UserRole{}).Error
 			},
@@ -232,13 +229,13 @@ func DBInit(db *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)"`
+					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
 			},
@@ -248,27 +245,27 @@ func DBInit(db *gorm.DB) error {
 		}, {
 			ID: "17",
 			Migrate: func(tx *gorm.DB) error {
-				return tx.Create(&dbmodels.UserRole{Name: "admin"}).Error
+				return tx.Create(&UserRole{Name: "admin"}).Error
 			},
 			Rollback: func(tx *gorm.DB) error {
-				return tx.Where("name = ?", "admin").Delete(&dbmodels.UserRole{}).Error
+				return tx.Where("name = ?", "admin").Delete(&UserRole{}).Error
 			},
 		}, {
 			ID: "18",
 			Migrate: func(tx *gorm.DB) error {
-				var adminRole dbmodels.UserRole
+				var adminRole UserRole
 				if err := db.Where("name = ?", "admin").First(&adminRole).Error; err != nil {
 					return err
 				}

-				var users []*dbmodels.User
+				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 {
+					if err := tx.Save(&user).Error; err != nil {
 						return err
 					}
 				}
@@ -282,13 +279,13 @@ func DBInit(db *gorm.DB) error {
 			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)"`
+					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
 			},
@@ -298,24 +295,24 @@ func DBInit(db *gorm.DB) error {
 		}, {
 			ID: "20",
 			Migrate: func(tx *gorm.DB) error {
-				return tx.Create(&dbmodels.UserRole{Name: "listhosts"}).Error
+				return tx.Create(&UserRole{Name: "listhosts"}).Error
 			},
 			Rollback: func(tx *gorm.DB) error {
-				return tx.Where("name = ?", "listhosts").Delete(&dbmodels.UserRole{}).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      *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"`
+					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
 			},
@@ -327,12 +324,12 @@ func DBInit(db *gorm.DB) error {
 			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)"`
+					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
 			},
@@ -344,11 +341,11 @@ func DBInit(db *gorm.DB) error {
 			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          *dbmodels.User `gorm:"ForeignKey:UserID"`
-					Comment       string         `valid:"optional"`
+					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
 			},
@@ -358,7 +355,7 @@ func DBInit(db *gorm.DB) error {
 		}, {
 			ID: "24",
 			Migrate: func(tx *gorm.DB) error {
-				var userKeys []*dbmodels.UserKey
+				var userKeys []UserKey
 				if err := db.Find(&userKeys).Error; err != nil {
 					return err
 				}
@@ -369,7 +366,7 @@ func DBInit(db *gorm.DB) error {
 						return err
 					}
 					userKey.AuthorizedKey = string(gossh.MarshalAuthorizedKey(key))
-					if err := db.Model(userKey).Updates(userKey).Error; err != nil {
+					if err := db.Model(&userKey).Updates(&userKey).Error; err != nil {
 						return err
 					}
 				}
@@ -384,16 +381,16 @@ func DBInit(db *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      *dbmodels.SSHKey      `gorm:"ForeignKey:SSHKeyID"` // SSHKey used to connect by the client
-					SSHKeyID    uint                  `gorm:"index"`
-					HostKey     []byte                `sql:"size:10000" valid:"optional"`
-					Groups      []*dbmodels.HostGroup `gorm:"many2many:host_host_groups;"`
-					Fingerprint string                `valid:"optional"` // FIXME: replace with hostKey ?
-					Comment     string                `valid:"optional"`
+					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
 			},
@@ -405,14 +402,14 @@ func DBInit(db *gorm.DB) error {
 			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"`
+					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
 			},
@@ -422,14 +419,14 @@ func DBInit(db *gorm.DB) error {
 		}, {
 			ID: "27",
 			Migrate: func(tx *gorm.DB) error {
-				var sessions []*dbmodels.Session
+				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 {
+						if err := db.Model(&session).Updates(map[string]interface{}{"stopped_at": nil}).Error; err != nil {
 							return err
 						}
 					}
@@ -450,10 +447,10 @@ func DBInit(db *gorm.DB) error {
 					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;"`
+					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
@@ -472,12 +469,12 @@ func DBInit(db *gorm.DB) error {
 					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;"`
+					SSHKey   *SSHKey      `gorm:"ForeignKey:SSHKeyID"`
+					SSHKeyID uint         `gorm:"index"`
+					HostKey  []byte       `sql:"size:10000"`
+					Groups   []*HostGroup `gorm:"many2many:host_host_groups;"`
 					Comment  string
-					Hop      *dbmodels.Host
+					Hop      *Host
 					HopID    uint
 				}
 				return tx.AutoMigrate(&Host{}).Error
@@ -490,7 +487,7 @@ func DBInit(db *gorm.DB) error {
 	if err := m.Migrate(); err != nil {
 		return err
 	}
-	dbmodels.NewEvent("system", "migrated").Log(db)
+	NewEvent("system", "migrated").Log(db)

 	// create default ssh key
 	var count uint
@@ -498,7 +495,7 @@ func DBInit(db *gorm.DB) error {
 		return err
 	}
 	if count == 0 {
-		key, err := crypto.NewSSHKey("rsa", 2048)
+		key, err := NewSSHKey("rsa", 2048)
 		if err != nil {
 			return err
 		}
@@ -514,7 +511,7 @@ func DBInit(db *gorm.DB) error {
 		return err
 	}
 	if count == 0 {
-		hostGroup := dbmodels.HostGroup{
+		hostGroup := HostGroup{
 			Name:    "default",
 			Comment: "created by sshportal",
 		}
@@ -528,7 +525,7 @@ func DBInit(db *gorm.DB) error {
 		return err
 	}
 	if count == 0 {
-		userGroup := dbmodels.UserGroup{
+		userGroup := UserGroup{
 			Name:    "default",
 			Comment: "created by sshportal",
 		}
@@ -542,13 +539,13 @@ func DBInit(db *gorm.DB) error {
 		return err
 	}
 	if count == 0 {
-		var defaultUserGroup dbmodels.UserGroup
+		var defaultUserGroup UserGroup
 		db.Where("name = ?", "default").First(&defaultUserGroup)
-		var defaultHostGroup dbmodels.HostGroup
+		var defaultHostGroup HostGroup
 		db.Where("name = ?", "default").First(&defaultHostGroup)
-		acl := dbmodels.ACL{
-			UserGroups: []*dbmodels.UserGroup{&defaultUserGroup},
-			HostGroups: []*dbmodels.HostGroup{&defaultHostGroup},
+		acl := ACL{
+			UserGroups: []*UserGroup{&defaultUserGroup},
+			HostGroups: []*HostGroup{&defaultHostGroup},
 			Action:     "allow",
 			//HostPattern: "",
 			//Weight:      0,
@@ -560,7 +557,7 @@ func DBInit(db *gorm.DB) error {
 	}

 	// create admin user
-	var defaultUserGroup dbmodels.UserGroup
+	var defaultUserGroup UserGroup
 	db.Where("name = ?", "default").First(&defaultUserGroup)
 	if err := db.Table("users").Count(&count).Error; err != nil {
 		return err
@@ -571,7 +568,7 @@ func DBInit(db *gorm.DB) error {
 		if os.Getenv("SSHPORTAL_DEFAULT_ADMIN_INVITE_TOKEN") != "" {
 			inviteToken = os.Getenv("SSHPORTAL_DEFAULT_ADMIN_INVITE_TOKEN")
 		}
-		var adminRole dbmodels.UserRole
+		var adminRole UserRole
 		if err := db.Where("name = ?", "admin").First(&adminRole).Error; err != nil {
 			return err
 		}
@@ -586,13 +583,13 @@ func DBInit(db *gorm.DB) error {
 		if username == "" {
 			username = "admin" // fallback username
 		}
-		user := dbmodels.User{
+		user := User{
 			Name:        username,
 			Email:       fmt.Sprintf("%s@localhost", username),
 			Comment:     "created by sshportal",
-			Roles:       []*dbmodels.UserRole{&adminRole},
+			Roles:       []*UserRole{&adminRole},
 			InviteToken: inviteToken,
-			Groups:      []*dbmodels.UserGroup{&defaultUserGroup},
+			Groups:      []*UserGroup{&defaultUserGroup},
 		}
 		if err := db.Create(&user).Error; err != nil {
 			return err
@@ -605,7 +602,7 @@ func DBInit(db *gorm.DB) error {
 		return err
 	}
 	if count == 0 {
-		key, err := crypto.NewSSHKey("rsa", 2048)
+		key, err := NewSSHKey("rsa", 2048)
 		if err != nil {
 			return err
 		}
@@ -617,8 +614,8 @@ func DBInit(db *gorm.DB) error {
 	}

 	// close unclosed connections
-	return db.Table("sessions").Where("status = ?", "active").Updates(&dbmodels.Session{
-		Status: string(dbmodels.SessionStatusClosed),
+	return db.Table("sessions").Where("status = ?", "active").Updates(&Session{
+		Status: string(SessionStatusClosed),
 		ErrMsg: "sshportal was halted while the connection was still active",
 	}).Error
 }
@@ -646,13 +643,3 @@ func addExtraSpaceIfExist(str string) string {
 	}
 	return ""
 }
-
-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)
-}
--- a/examples/integration/Makefile
+++ b/examples/integration/Makefile
@@ -5,6 +5,3 @@ run:
 	docker-compose exec sshportal /bin/sshportal healthcheck --wait --quiet
 	docker-compose run client /integration/_client.sh
 	docker-compose down
-
-build:
-	docker-compose build
--- a/examples/integration/_client.sh
+++ b/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 hostgroup inspect hg1 hg2
+ssh sshportal -l admin usergroup inspect hg1 hg2
 ssh sshportal -l admin hostgroup ls

 ssh sshportal -l admin usergroup create
--- a/go.mod
+++ b/go.mod
@@ -1,33 +1,47 @@
 module moul.io/sshportal

 require (
-	github.com/anmitsu/go-shlex v0.0.0-20200514113438-38f4b401e2be
-	github.com/asaskevich/govalidator v0.0.0-20200428143746-21a406dcc535
-	github.com/cpuguy83/go-md2man/v2 v2.0.0 // indirect
-	github.com/creack/pty v1.1.11 // indirect
+	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/docker/docker v1.13.1
+	github.com/denisenkom/go-mssqldb v0.0.0-20181014144952-4e0d7dc8888f // indirect
+	github.com/docker/docker v1.13.1 // indirect
 	github.com/dustin/go-humanize v1.0.0
-	github.com/gliderlabs/ssh v0.3.0
-	github.com/go-sql-driver/mysql v1.5.0 // indirect
+	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 v1.9.14
-	github.com/kr/pty v1.1.8
-	github.com/mattn/go-colorable v0.1.6 // indirect
-	github.com/mattn/go-runewidth v0.0.9 // indirect
-	github.com/mattn/go-sqlite3 v2.0.3+incompatible // 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/olekukonko/tablewriter v0.0.4
-	github.com/reiver/go-oi v1.0.0
+	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/reiver/go-telnet v0.0.0-20180421082511-9ff0b2ab096e
 	github.com/sabban/bastion v0.0.0-20180110125408-b9d3c9b1f4d3
-	github.com/smartystreets/assertions v0.0.0-20190401211740-f487f9de1cd3 // indirect
-	github.com/smartystreets/goconvey v1.6.4
-	github.com/urfave/cli v1.22.4
-	golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9
-	golang.org/x/sys v0.0.0-20200602225109-6fdc65e7d980 // indirect
-	gopkg.in/gormigrate.v1 v1.6.0
-	moul.io/srand v1.4.0
+	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
 )
-
-go 1.14
--- a/go.sum
+++ b/go.sum
@@ -1,137 +1,100 @@
+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/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
-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 v0.0.0-20200428143746-21a406dcc535 h1:4daAzAu0S6Vi7/lbWECcX0j45yZReDZ56BQsrVBOEEY=
-github.com/asaskevich/govalidator v0.0.0-20200428143746-21a406dcc535/go.mod h1:oGkLhpf+kjZl6xBf758TQhh5XrAeiJv/7FRz/2spLIg=
-github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d h1:U+s90UTSYgptZMwQh2aRr3LuazLJIa+Pg3Kc1ylSYVY=
-github.com/cpuguy83/go-md2man/v2 v2.0.0-20190314233015-f79a8a8ca69d/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
-github.com/cpuguy83/go-md2man/v2 v2.0.0 h1:EoUDS0afbrsXAZ9YQ9jdu/mZ2sXgT1/2yyNng4PGlyM=
-github.com/cpuguy83/go-md2man/v2 v2.0.0/go.mod h1:maD7wRr/U5Z6m/iR4s+kqSMx2CaBsrgA7czyZG/E6dU=
-github.com/creack/pty v1.1.7 h1:6pwm8kMQKCmgUg0ZHTm5+/YvRK0s3THD/28+T6/kk4A=
-github.com/creack/pty v1.1.7/go.mod h1:lj5s0c3V2DBrqTV7llrYr5NG6My20zk30Fl46Y7DoTY=
-github.com/creack/pty v1.1.11 h1:07n33Z8lZxZ2qwegKbObQohDhXDQxiMMz1NOUGYlesw=
-github.com/creack/pty v1.1.11/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
-github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+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/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/denisenkom/go-mssqldb v0.0.0-20181014144952-4e0d7dc8888f h1:WH0w/R4Yoey+04HhFxqZ6VX6I0d7RMyw5aXQ9UTvQPs=
 github.com/denisenkom/go-mssqldb v0.0.0-20181014144952-4e0d7dc8888f/go.mod h1:xN/JuLBIz4bjkxNmByTiV1IbhfnYb6oo99phBn4Eqhc=
-github.com/denisenkom/go-mssqldb v0.0.0-20191124224453-732737034ffd h1:83Wprp6ROGeiHFAP8WJdI2RoxALQYgdllERc3N5N2DM=
-github.com/denisenkom/go-mssqldb v0.0.0-20191124224453-732737034ffd/go.mod h1:xbL0rPBG9cCiLr28tMa8zpbdarY27NDyej4t/EjAShU=
-github.com/docker/docker v1.13.1 h1:IkZjBSIc8hBjLpqeAbeE5mca5mNgeatLHBy3GO78BWo=
+github.com/docker/docker v1.13.1 h1:5VBhsO6ckUxB0A8CE5LlUJdXzik9cbEbBTQ/ggeml7M=
 github.com/docker/docker v1.13.1/go.mod h1:eEKB0N0r5NX/I1kEveEz05bcu8tLC/8azJZsviup8Sk=
 github.com/dustin/go-humanize v1.0.0 h1:VSnTsYCnlFHaM2/igO1h6X3HA71jcobQuxemgkq4zYo=
 github.com/dustin/go-humanize v1.0.0/go.mod h1:HtrtbFcZ19U5GC7JDqmcUSB87Iq5E25KnS6fMYU6eOk=
 github.com/erikstmartin/go-testdb v0.0.0-20160219214506-8d10e4a1bae5 h1:Yzb9+7DPaBjB8zlTR87/ElzFsnQfuHnVUVqpZZIcV5Y=
 github.com/erikstmartin/go-testdb v0.0.0-20160219214506-8d10e4a1bae5/go.mod h1:a2zkGnVExMxdzMo3M0Hi/3sEU+cWnZpSni0O6/Yb/P0=
-github.com/gliderlabs/ssh v0.3.0 h1:7GcKy4erEljCE/QeQ2jTVpu+3f3zkpZOxOJjFYkMqYU=
-github.com/gliderlabs/ssh v0.3.0/go.mod h1:U7qILu1NlMHj9FlMhZLlkCdDnU1DBEAqr0aevW3Awn0=
+github.com/flynn/go-shlex v0.0.0-20150515145356-3f9db97f8568 h1:BHsljHzVlRcyQhjrss6TZTdY2VfCqZPbv5k3iBFa2ZQ=
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-golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
-golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
-golang.org/x/net v0.0.0-20200202094626-16171245cfb2/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
-golang.org/x/net v0.0.0-20200324143707-d3edc9973b7e/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
-golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
-golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200116001909-b77594299b42/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200223170610-d5e6a3e2c0ae/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200602225109-6fdc65e7d980 h1:OjiUf46hAmXblsZdnoSXsEUSKU8r1UEzcL5RVZ4gO9Y=
-golang.org/x/sys v0.0.0-20200602225109-6fdc65e7d980/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/net v0.0.0-20181114220301-adae6a3d119a/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
+golang.org/x/sys v0.0.0-20181107165924-66b7b1311ac8 h1:YoY1wS6JYVRpIfFngRf2HHo9R9dAne3xbkGOQ5rJXjU=
+golang.org/x/sys v0.0.0-20181107165924-66b7b1311ac8/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20181116161606-93218def8b18 h1:Wh+XCfg3kNpjhdq2LXrsiOProjtQZKme5XUx7VcxwAw=
+golang.org/x/sys v0.0.0-20181116161606-93218def8b18/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
+golang.org/x/sys v0.0.0-20181122145206-62eef0e2fa9b h1:MQE+LT/ABUuuvEZ+YQAMSXindAdUh7slEmAkup74op4=
+golang.org/x/sys v0.0.0-20181122145206-62eef0e2fa9b/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
-golang.org/x/tools v0.0.0-20190328211700-ab21143f2384/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
+google.golang.org/appengine v1.3.0 h1:FBSsiFRMz3LBeXIomRnVzrQwSDj4ibvcRexLG0LZGQk=
 google.golang.org/appengine v1.3.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
-google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
-gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/gormigrate.v1 v1.6.0 h1:XpYM6RHQPmzwY7Uyu+t+xxMXc86JYFJn4nEc9HzQjsI=
-gopkg.in/gormigrate.v1 v1.6.0/go.mod h1:Lf00lQrHqfSYWiTtPcyQabsDdM6ejZaMgV0OU6JMSlw=
-gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-moul.io/srand v1.4.0 h1:r5ZMiWDN0ni0lTV7KzJR/jx0K7GivJYW5WaXmufgeik=
-moul.io/srand v1.4.0/go.mod h1:P2uaZB+GFstFNo8sEj6/U8FRV1n25kD0LLckFpJ+qvc=
+gopkg.in/stretchr/testify.v1 v1.2.2 h1:yhQC6Uy5CqibAIlk1wlusa/MJ3iAN49/BsR/dCCKz3M=
+gopkg.in/stretchr/testify.v1 v1.2.2/go.mod h1:QI5V/q6UbPmuhtm10CaFZxED9NreB8PnFYN9JcR6TxU=
--- a/helm/sshportal/.helmignore
+++ b/helm/sshportal/.helmignore
@@ -1,22 +0,0 @@
-# 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/
--- a/helm/sshportal/Chart.yaml
+++ b/helm/sshportal/Chart.yaml
@@ -1,21 +0,0 @@
-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
--- a/helm/sshportal/templates/NOTES.txt
+++ b/helm/sshportal/templates/NOTES.txt
@@ -1,33 +0,0 @@
-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 }}
--- a/helm/sshportal/templates/_helpers.tpl
+++ b/helm/sshportal/templates/_helpers.tpl
@@ -1,63 +0,0 @@
-{{/* 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 -}}
--- a/helm/sshportal/templates/deployment.yaml
+++ b/helm/sshportal/templates/deployment.yaml
@@ -1,69 +0,0 @@
-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 }}
--- a/helm/sshportal/templates/horizontal-pod-autoscaling.yaml
+++ b/helm/sshportal/templates/horizontal-pod-autoscaling.yaml
@@ -1,21 +0,0 @@
-{{- 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 }}
-
--- a/helm/sshportal/templates/service.yaml
+++ b/helm/sshportal/templates/service.yaml
@@ -1,17 +0,0 @@
-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 }}
--- a/helm/sshportal/templates/tests/test-connection.yaml
+++ b/helm/sshportal/templates/tests/test-connection.yaml
@@ -1,15 +0,0 @@
-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
--- a/helm/sshportal/values.yaml
+++ b/helm/sshportal/values.yaml
@@ -1,119 +0,0 @@
-# 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
--- a/testserver.go
+++ b/testserver.go
@@ -11,8 +11,8 @@ import (
 	"syscall"
 	"unsafe"

-	"github.com/gliderlabs/ssh"
 	"github.com/kr/pty"
+	"github.com/moul/ssh"
 	"github.com/urfave/cli"
 )

--- a/main.go
+++ b/main.go
@@ -1,31 +1,41 @@
 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"
-	"moul.io/srand"
+	gossh "golang.org/x/crypto/ssh"
 )

 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 = "n/a"
+	GitTag string
 	// GitSha will be overwritten automatically by the build system
-	GitSha = "n/a"
+	GitSha string
+	// GitBranch will be overwritten automatically by the build system
+	GitBranch string
 )

 func main() {
-	rand.Seed(srand.Secure())
+	rand.Seed(time.Now().UnixNano())

 	app := cli.NewApp()
 	app.Name = path.Base(os.Args[0])
 	app.Author = "Manfred Touron"
-	app.Version = GitTag + " (" + GitSha + ")"
+	app.Version = Version + " (" + GitSha + ")"
 	app.Email = "https://moul.io/sshportal"
 	app.Commands = []cli.Command{
 		{
@@ -35,7 +45,7 @@ func main() {
 				if err := ensureLogDirectory(c.String("logs-location")); err != nil {
 					return err
 				}
-				cfg, err := parseServerConfig(c)
+				cfg, err := parseServeConfig(c)
 				if err != nil {
 					return err
 				}
@@ -110,3 +120,82 @@ 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)
+}
--- a/pkg/bastion/acl.go
+++ b/pkg/bastion/acl.go
@@ -1,44 +0,0 @@
-package bastion // import "moul.io/sshportal/pkg/bastion"
-
-import (
-	"sort"
-
-	"moul.io/sshportal/pkg/dbmodels"
-)
-
-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) string {
-	// 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 {
-						aclMap[userGroupACL.ID] = userGroupACL
-					}
-				}
-			}
-		}
-	}
-	// FIXME: add ACLs that match host pattern
-
-	// deny by default if no shared ACL
-	if len(aclMap) == 0 {
-		return string(dbmodels.ACLActionDeny) // default 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))
-
-	return acls[0].Action
-}
--- a/pkg/bastion/acl_test.go
+++ b/pkg/bastion/acl_test.go
@@ -1,49 +0,0 @@
-package bastion // import "moul.io/sshportal/pkg/bastion"
-
-import (
-	"io/ioutil"
-	"os"
-	"path/filepath"
-	"testing"
-
-	"github.com/jinzhu/gorm"
-	_ "github.com/jinzhu/gorm/dialects/mysql"
-	_ "github.com/jinzhu/gorm/dialects/sqlite"
-	. "github.com/smartystreets/goconvey/convey"
-	"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("sqlite3", filepath.Join(tempDir, "sshportal.db"))
-		c.So(err, ShouldBeNil)
-		db.LogMode(false)
-		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)
-	})
-}
--- a/pkg/bastionsession/bastionsession.go
+++ b/pkg/bastionsession/bastionsession.go
@@ -1,25 +1,34 @@
-package bastion // import "moul.io/sshportal/pkg/bastion"
+package bastionsession // import "moul.io/sshportal/pkg/bastionsession"

 import (
-	"fmt"
+	"errors"
 	"io"
 	"log"
 	"os"
 	"strings"
 	"time"

-	"github.com/gliderlabs/ssh"
+	"github.com/moul/ssh"
 	"github.com/sabban/bastion/pkg/logchannel"
 	gossh "golang.org/x/crypto/ssh"
+
+	"moul.io/sshportal/pkg/logtunnel"
 )

-type sessionConfig struct {
+type ForwardData struct {
+	DestinationHost string
+	DestinationPort uint32
+	SourceHost      string
+	SourcePort      uint32
+}
+
+type Config struct {
 	Addr         string
 	Logs         string
 	ClientConfig *gossh.ClientConfig
 }

-func multiChannelHandler(conn *gossh.ServerConn, newChan gossh.NewChannel, ctx ssh.Context, configs []sessionConfig, sessionID uint) error {
+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":
@@ -47,7 +56,6 @@ func multiChannelHandler(conn *gossh.ServerConn, newChan gossh.NewChannel, ctx s
 				client = gossh.NewClient(ncc, chans, reqs)
 			}
 			if err != nil {
-				lch.Close() // fix #56
 				return err
 			}
 			defer func() { _ = client.Close() }()
@@ -59,10 +67,8 @@ func multiChannelHandler(conn *gossh.ServerConn, newChan gossh.NewChannel, ctx s
 			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].Logs, user, username, sessionID, newChan)
+		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
@@ -88,14 +94,13 @@ func multiChannelHandler(conn *gossh.ServerConn, newChan gossh.NewChannel, ctx s
 				client = gossh.NewClient(ncc, chans, reqs)
 			}
 			if err != nil {
-				lch.Close()
 				return err
 			}
 			defer func() { _ = client.Close() }()
 			lastClient = client
 		}

-		d := logTunnelForwardData{}
+		d := logtunnel.ForwardData{}
 		if err := gossh.Unmarshal(newChan.ExtraData(), &d); err != nil {
 			return err
 		}
@@ -104,10 +109,8 @@ func multiChannelHandler(conn *gossh.ServerConn, newChan gossh.NewChannel, ctx s
 			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].Logs, user, username, sessionID, newChan)
+		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)
@@ -116,18 +119,17 @@ func multiChannelHandler(conn *gossh.ServerConn, newChan gossh.NewChannel, ctx s
 	}
 }

-func pipe(lreqs, rreqs <-chan *gossh.Request, lch, rch gossh.Channel, logsLocation string, user string, username string, sessionID uint, newChan gossh.NewChannel) error {
+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)
-	quit := make(chan string, 1)
 	channeltype := newChan.ChannelType()

-	filename := strings.Join([]string{logsLocation, "/", user, "-", username, "-", channeltype, "-", fmt.Sprint(sessionID), "-", time.Now().Format(time.RFC3339)}, "") // get user
-	f, err := os.OpenFile(filename, os.O_WRONLY|os.O_CREATE|os.O_TRUNC, 0440)
+	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()
 	}()
@@ -139,36 +141,40 @@ func pipe(lreqs, rreqs <-chan *gossh.Request, lch, rch gossh.Channel, logsLocati
 	log.Printf("Session %v is recorded in %v", channeltype, filename)
 	if channeltype == "session" {
 		wrappedlch := logchannel.New(lch, f)
-		go func(quit chan string) {
+		go func() {
 			_, _ = io.Copy(wrappedlch, rch)
-			quit <- "rch"
-		}(quit)
+			errch <- errors.New("lch closed the connection")
+		}()

-		go func(quit chan string) {
+		go func() {
 			_, _ = io.Copy(rch, lch)
-			quit <- "lch"
-		}(quit)
+			errch <- errors.New("rch closed the connection")
+		}()
 	}
 	if channeltype == "direct-tcpip" {
-		d := logTunnelForwardData{}
+		d := logtunnel.ForwardData{}
 		if err := gossh.Unmarshal(newChan.ExtraData(), &d); err != nil {
 			return err
 		}
-		wrappedlch := newLogTunnel(lch, f, d.SourceHost)
-		wrappedrch := newLogTunnel(rch, f, d.DestinationHost)
-		go func(quit chan string) {
+		wrappedlch := logtunnel.New(lch, f, d.SourceHost)
+		wrappedrch := logtunnel.New(rch, f, d.DestinationHost)
+		go func() {
 			_, _ = io.Copy(wrappedlch, rch)
-			quit <- "rch"
-		}(quit)
+			errch <- errors.New("lch closed the connection")
+		}()

-		go func(quit chan string) {
+		go func() {
 			_, _ = io.Copy(wrappedrch, lch)
-			quit <- "lch"
-		}(quit)
+			errch <- errors.New("rch closed the connection")
+		}()
 	}

-	go func(quit chan string) {
-		for req := range lreqs {
+	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)
@@ -179,58 +185,24 @@ func pipe(lreqs, rreqs <-chan *gossh.Request, lch, rch gossh.Channel, logsLocati
 			}

 			if err != nil {
-				errch <- err
+				return err
 			}
 			if err2 := req.Reply(b, nil); err2 != nil {
-				errch <- err2
+				return 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 {
+		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
 		}
 	}
 }
--- a/pkg/dbmodels/validator.go
+++ b/pkg/dbmodels/validator.go
@@ -1,19 +0,0 @@
-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)
-	}))
-}
--- a/pkg/logtunnel/logtunnel.go
+++ b/pkg/logtunnel/logtunnel.go
@@ -1,4 +1,5 @@
-package bastion // import "moul.io/sshportal/pkg/bastion"
+eeeeeeeeepacka,ge logtunnel //
+import "moul.io/sshportal/pkg/logtunnel"

 import (
 	"encoding/binary"
@@ -17,7 +18,7 @@ type logTunnel struct {
 	writer  io.WriteCloser
 }

-type logTunnelForwardData struct {
+type ForwardData struct {
 	DestinationHost string
 	DestinationPort uint32
 	SourceHost      string
@@ -27,9 +28,10 @@ type logTunnelForwardData 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.Sec)); err != nil {
+	tv := syscall.NsecToTimeval,.
+	(t.
+	UnixNano())	if err := binary.Write(fd, binary.LittleEndian, int32(tv.Se,
+	c)); err  nil ),
 		log.Printf("failed to write log header: %v", err)
 	}
 	if err := binary.Write(fd, binary.LittleEndian, tv.Usec); err != nil {
@@ -40,32 +42,50 @@ func writeHeader(fd io.Writer, length int) {
 	}
 }

-func newLogTunnel(channel ssh.Channel, writer io.WriteCloser, host string) io.ReadWriteCloser {
+func New(channel ssh.Channel, writer io.WriteCloser, host string) io.ReadWriteCloser {
 	return &logTunnel{
 		host:    host,
-		channel: channel,
-		writer:  writer,
-	}
-}
+		hannel: 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", err)
+		log.Printf("failed to write log: %v",e err,
+		)
 	}

-	return l.channel.Write(data)
+	return l.channel.Write(
+		data),
+
 }

-func (l *logTunnel) Close() error {
-	l.writer.Close()
+func (l,	*logTunnel) Close,() error {	l.writer.Close	return

-	return l.channel.Close()
+	le.
+		channel.
+		Close()
 }
+,
+,
+eeeeeee,
+
+eeeeeeeeeeeeeee,ee
+,eeeeeeee
+,
+
+eeeeee,
+eeeee,
+eeeeee,
--- a/.github/renovate.json
+++ b/.github/renovate.json
@@ -2,6 +2,5 @@
  "extends": [
    "config:base"
  ],
-  "groupName": "all",
-  "gomodTidy": true
+  "groupName": "all"
 }
--- a/rules.mk
+++ b/rules.mk
@@ -1,278 +0,0 @@
-# +--------------------------------------------------------------+
-# | * * *                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  |  |
-# |   |      +++    /  \______________________________________/  |
-# |    \      =+   /                                             |
-# |     \      +                                                 |
-# |     |\++++++                                                 |
-# |     |  ++++      ||//                                        |
-# |  ___|   |___    _||/__                                     __|
-# | /    ---    \   \|  |||                   __ _  ___  __ __/ /|
-# |/  |       |  \    \ /                    /  ' \/ _ \/ // / / |
-# ||  |       |  |    | |                   /_/_/_/\___/\_,_/_/  |
-# +--------------------------------------------------------------+
-
-all: help
-
-##
-## Common helpers
-##
-
-rwildcard = $(foreach d,$(wildcard $1*),$(call rwildcard,$d/,$2) $(filter $(subst *,%,$2),$d))
-
-##
-## 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_DIR ?= .
-GOCOVERAGE_FILE ?= ./coverage.txt
-
-ifdef GOBINS
-.PHONY: go.install
-go.install:
-	@set -e; for dir in $(GOBINS); do ( set -xe; \
-	  cd $$dir; \
-	  $(GO) install $(GO_INSTALL_OPTS) .; \
-	); done
-INSTALL_STEPS += go.install
-
-.PHONY: go.release
-go.release:
-	goreleaser --snapshot --skip-publish --rm-dist
-	@echo -n "Do you want to release? [y/N] " && read ans && \
-	  if [ $${ans:-N} = y ]; then set -xe; goreleaser --rm-dist; fi
-RELEASE_STEPS += go.release
-endif
-
-.PHONY: go.unittest
-go.unittest:
-	@echo "mode: atomic" > /tmp/gocoverage
-	@set -e; for dir in `find $(GOMOD_DIR) -type f -name "go.mod" | grep -v /vendor/ | sed 's@/[^/]*$$@@' | sort | uniq`; do (set -e; (set -xe; \
-	  cd $$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)
-
-.PHONY: go.checkdoc
-go.checkdoc:
-	go doc $(GOMOD_DIR)
-
-.PHONY: go.coverfunc
-go.coverfunc: go.unittest
-	go tool cover -func=$(GOCOVERAGE_FILE) | grep -v .pb.go: | grep -v .pb.gw.go:
-
-.PHONY: go.lint
-go.lint:
-	@set -e; for dir in `find $(GOMOD_DIR) -type f -name "go.mod" | grep -v /vendor/ | sed 's@/[^/]*$$@@' | sort | uniq`; do ( set -xe; \
-	  cd $$dir; \
-	  golangci-lint run --verbose ./...; \
-	); done
-
-.PHONY: go.tidy
-go.tidy:
-	@set -e; for dir in `find $(GOMOD_DIR) -type f -name "go.mod" | grep -v /vendor/ | sed 's@/[^/]*$$@@' | sort | uniq`; do ( set -xe; \
-	  cd $$dir; \
-	  $(GO)	mod tidy; \
-	); done
-
-.PHONY: go.build
-go.build:
-	@set -e; for dir in `find $(GOMOD_DIR) -type f -name "go.mod" | grep -v /vendor/ | sed 's@/[^/]*$$@@' | sort | uniq`; do ( set -xe; \
-	  cd $$dir; \
-	  $(GO)	build ./...; \
-	); done
-
-.PHONY: go.bump-deps
-go.bumpdeps:
-	@set -e; for dir in `find $(GOMOD_DIR) -type f -name "go.mod" | grep -v /vendor/ | sed 's@/[^/]*$$@@' | sort | uniq`; do ( set -xe; \
-	  cd $$dir; \
-	  $(GO)	get -u ./...; \
-	); done
-
-.PHONY: go.bump-deps
-go.fmt:
-	if ! command -v goimports &>/dev/null; then GO111MODULE=off go get golang.org/x/tools/cmd/goimports; fi
-	@set -e; for dir in `find $(GOMOD_DIR) -type f -name "go.mod" | grep -v /vendor/ | sed 's@/[^/]*$$@@' | sort | uniq`; do ( set -xe; \
-	  cd $$dir; \
-	  goimports -w `go list -f '{{.Dir}}' ./...)` \
-	); done
-
-BUILD_STEPS += go.build
-BUMPDEPS_STEPS += go.bumpdeps
-TIDY_STEPS += go.tidy
-LINT_STEPS += go.lint
-UNITTEST_STEPS += go.unittest
-FMT_STEPS += go.fmt
-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:
-	$(call docker_build,$(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 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
-	@# FIXME: list other commands
--- a/server.go
+++ b/server.go
@@ -1,134 +0,0 @@
-package main
-
-import (
-	"fmt"
-	"log"
-	"math"
-	"net"
-	"os"
-	"time"
-
-	"github.com/gliderlabs/ssh"
-	"github.com/jinzhu/gorm"
-	"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
-}
-
-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"),
-	}
-	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 server(c *serverConfig) (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 = 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.aesKey, c.dbDriver, c.dbURL, c.bindAddr, c.demo)),
-		ssh.PasswordAuth(bastion.PasswordAuthHandler(db, c.logsLocation, 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)
-}
--- a/pkg/bastion/shell.go
+++ b/pkg/bastion/shell.go
--- a/pkg/bastion/ssh.go
+++ b/pkg/bastion/ssh.go
@@ -1,4 +1,4 @@
-package bastion // import "moul.io/sshportal/pkg/bastion"
+package main

 import (
 	"bytes"
@@ -9,11 +9,11 @@ import (
 	"strings"
 	"time"

-	"github.com/gliderlabs/ssh"
 	"github.com/jinzhu/gorm"
+	"github.com/moul/ssh"
 	gossh "golang.org/x/crypto/ssh"
-	"moul.io/sshportal/pkg/crypto"
-	"moul.io/sshportal/pkg/dbmodels"
+
+	"moul.io/sshportal/pkg/bastionsession"
 )

 type sshportalContextKey string
@@ -21,44 +21,40 @@ type sshportalContextKey string
 var authContextKey = sshportalContextKey("auth")

 type authContext struct {
-	message         string
-	err             error
-	user            dbmodels.User
-	inputUsername   string
-	db              *gorm.DB
-	userKey         dbmodels.UserKey
-	logsLocation    string
-	aesKey          string
-	dbDriver, dbURL string
-	bindAddr        string
-	demo, debug     bool
-	authMethod      string
-	authSuccess     bool
+	message       string
+	err           error
+	user          User
+	inputUsername string
+	db            *gorm.DB
+	userKey       UserKey
+	config        *configServe
+	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 *dbmodels.Host) gossh.HostKeyCallback {
+func dynamicHostKey(db *gorm.DB, host *Host) gossh.HostKeyCallback {
 	return func(hostname string, remote net.Addr, key gossh.PublicKey) error {
 		if len(host.HostKey) == 0 {
 			log.Println("Discovering host fingerprint...")
@@ -72,9 +68,7 @@ func dynamicHostKey(db *gorm.DB, host *dbmodels.Host) gossh.HostKeyCallback {
 	}
 }

-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) {
+func channelHandler(srv *ssh.Server, conn *gossh.ServerConn, newChan gossh.NewChannel, ctx ssh.Context) {
 	switch newChan.ChannelType() {
 	case "session":
 	case "direct-tcpip":
@@ -89,9 +83,9 @@ func ChannelHandler(srv *ssh.Server, conn *gossh.ServerConn, newChan gossh.NewCh
 	actx := ctx.Value(authContextKey).(*authContext)

 	switch actx.userType() {
-	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)
+	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)
 		if err != nil {
 			ch, _, err2 := newChan.Accept()
 			if err2 != nil {
@@ -104,8 +98,8 @@ func ChannelHandler(srv *ssh.Server, conn *gossh.ServerConn, newChan gossh.NewCh
 		}

 		switch host.Scheme() {
-		case dbmodels.BastionSchemeSSH:
-			sessionConfigs := make([]sessionConfig, 0)
+		case BastionSchemeSSH:
+			sessionConfigs := make([]bastionsession.Config, 0)
 			currentHost := host
 			for currentHost != nil {
 				clientConfig, err2 := bastionClientConfig(ctx, currentHost)
@@ -119,25 +113,25 @@ func ChannelHandler(srv *ssh.Server, conn *gossh.ServerConn, newChan gossh.NewCh
 					_ = ch.Close()
 					return
 				}
-				sessionConfigs = append([]sessionConfig{{
+				sessionConfigs = append([]bastionsession.Config{{
 					Addr:         currentHost.DialAddr(),
 					ClientConfig: clientConfig,
-					Logs:         actx.logsLocation,
+					Logs:         actx.config.logsLocation,
 				}}, sessionConfigs...)
 				if currentHost.HopID != 0 {
-					var newHost dbmodels.Host
+					var newHost Host
 					actx.db.Model(currentHost).Related(&newHost, "HopID")
 					hostname := newHost.Name
-					currentHost, _ = dbmodels.HostByName(actx.db, hostname)
+					currentHost, _ = HostByName(actx.db, hostname)
 				} else {
 					currentHost = nil
 				}
 			}

-			sess := dbmodels.Session{
+			sess := Session{
 				UserID: actx.user.ID,
 				HostID: host.ID,
-				Status: string(dbmodels.SessionStatusActive),
+				Status: string(SessionStatusActive),
 			}
 			if err = actx.db.Create(&sess).Error; err != nil {
 				ch, _, err2 := newChan.Accept()
@@ -148,29 +142,31 @@ func ChannelHandler(srv *ssh.Server, conn *gossh.ServerConn, newChan gossh.NewCh
 				_ = ch.Close()
 				return
 			}
+
 			go func() {
-				err = multiChannelHandler(conn, newChan, ctx, sessionConfigs, sess.ID)
+				err = bastionsession.MultiChannelHandler(srv, conn, newChan, ctx, sessionConfigs)
 				if err != nil {
 					log.Printf("Error: %v", err)
 				}

 				now := time.Now()
-				sessUpdate := dbmodels.Session{
-					Status:    string(dbmodels.SessionStatusClosed),
+				sessUpdate := Session{
+					Status:    string(SessionStatusClosed),
 					ErrMsg:    fmt.Sprintf("%v", err),
 					StoppedAt: &now,
 				}
-				if err == nil {
+				switch sessUpdate.ErrMsg {
+				case "lch closed the connection", "rch closed the connection":
 					sessUpdate.ErrMsg = ""
 				}
 				actx.db.Model(&sess).Updates(&sessUpdate)
 			}()
-		case dbmodels.BastionSchemeTelnet:
+		case 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 {
@@ -181,35 +177,37 @@ 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 *dbmodels.Host) (*gossh.ClientConfig, error) {
+func bastionClientConfig(ctx ssh.Context, host *Host) (*gossh.ClientConfig, error) {
 	actx := ctx.Value(authContextKey).(*authContext)

-	crypto.HostDecrypt(actx.aesKey, host)
-	crypto.SSHKeyDecrypt(actx.aesKey, host.SSHKey)
-
-	clientConfig, err := host.ClientConfig(dynamicHostKey(actx.db, host))
+	clientConfig, err := host.clientConfig(dynamicHostKey(actx.db, host))
 	if err != nil {
 		return nil, err
 	}

-	var tmpUser dbmodels.User
+	var tmpUser 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 dbmodels.Host
+	var tmpHost 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)
 	switch action {
-	case string(dbmodels.ACLActionAllow):
-		// do nothing
-	case string(dbmodels.ACLActionDeny):
+	case string(ACLActionAllow):
+	case string(ACLActionDeny):
 		return nil, fmt.Errorf("you don't have permission to that host")
 	default:
 		return nil, fmt.Errorf("invalid ACL action: %q", action)
@@ -217,10 +215,10 @@ func bastionClientConfig(ctx ssh.Context, host *dbmodels.Host) (*gossh.ClientCon
 	return clientConfig, nil
 }

-func ShellHandler(s ssh.Session, version, gitSha, gitTag string) {
+func shellHandler(s ssh.Session) {
 	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:%d,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:%q,email:%s", s.User(), s.RemoteAddr(), s.LocalAddr(), s.Command(), actx.user.ID, actx.user.Email)
 	}

 	if actx.err != nil {
@@ -234,48 +232,43 @@ func ShellHandler(s ssh.Session, version, gitSha, gitTag string) {
 	}

 	switch actx.userType() {
-	case userTypeHealthcheck:
+	case UserTypeHealthcheck:
 		fmt.Fprintln(s, "OK")
 		return
-	case userTypeShell:
-		if err := shell(s, version, gitSha, gitTag); err != nil {
+	case UserTypeShell:
+		if err := shell(s); 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, logsLocation, aesKey, dbDriver, dbURL, bindAddr string, demo bool) ssh.PasswordHandler {
+func passwordAuthHandler(db *gorm.DB, cfg *configServe) ssh.PasswordHandler {
 	return func(ctx ssh.Context, pass string) bool {
 		actx := &authContext{
 			db:            db,
 			inputUsername: ctx.User(),
-			logsLocation:  logsLocation,
-			aesKey:        aesKey,
-			dbDriver:      dbDriver,
-			dbURL:         dbURL,
-			bindAddr:      bindAddr,
-			demo:          demo,
+			config:        cfg,
 			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 dbmodels.SSHKey
-		if err := dbmodels.SSHKeysByIdentifiers(db, []string{"host"}).First(&key).Error; err != nil {
+		var key SSHKey
+		if err := SSHKeysByIdentifiers(db, []string{"host"}).First(&key).Error; err != nil {
 			return err
 		}
-		crypto.SSHKeyDecrypt(aesKey, &key)
+		SSHKeyDecrypt(aesKey, &key)

 		signer, err := gossh.ParsePrivateKey([]byte(key.PrivKey))
 		if err != nil {
@@ -286,17 +279,12 @@ func PrivateKeyFromDB(db *gorm.DB, aesKey string) func(*ssh.Server) error {
 	}
 }

-func PublicKeyAuthHandler(db *gorm.DB, logsLocation, aesKey, dbDriver, dbURL, bindAddr string, demo bool) ssh.PublicKeyHandler {
+func publicKeyAuthHandler(db *gorm.DB, cfg *configServe) ssh.PublicKeyHandler {
 	return func(ctx ssh.Context, key ssh.PublicKey) bool {
 		actx := &authContext{
 			db:            db,
 			inputUsername: ctx.User(),
-			logsLocation:  logsLocation,
-			aesKey:        aesKey,
-			dbDriver:      dbDriver,
-			dbURL:         dbURL,
-			bindAddr:      bindAddr,
-			demo:          demo,
+			config:        cfg,
 			authMethod:    "pubkey",
 			authSuccess:   true,
 		}
@@ -306,20 +294,20 @@ func PublicKeyAuthHandler(db *gorm.DB, logsLocation, aesKey, dbDriver, dbURL, bi
 		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 = dbmodels.UserKey{
+				actx.userKey = UserKey{
 					UserID:        actx.user.ID,
 					Key:           key.Marshal(),
 					Comment:       "created by sshportal",
@@ -333,7 +321,7 @@ func PublicKeyAuthHandler(db *gorm.DB, logsLocation, aesKey, dbDriver, dbURL, bi

 				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 = dbmodels.User{Name: "Anonymous"}
+				actx.user = User{Name: "Anonymous"}
 				actx.err = errors.New("your token is invalid or expired")
 			}
 			return true
@@ -341,7 +329,7 @@ func PublicKeyAuthHandler(db *gorm.DB, logsLocation, aesKey, dbDriver, dbURL, bi

 		// fallback
 		actx.err = errors.New("unknown ssh key")
-		actx.user = dbmodels.User{Name: "Anonymous"}
+		actx.user = User{Name: "Anonymous"}
 		return true
 	}
 }
--- a/pkg/bastion/telnet.go
+++ b/pkg/bastion/telnet.go
@@ -1,4 +1,4 @@
-package bastion // import "moul.io/sshportal/pkg/bastion"
+package main

 import (
 	"bufio"
@@ -8,10 +8,9 @@ import (
 	"log"
 	"time"

-	"github.com/gliderlabs/ssh"
+	"github.com/moul/ssh"
 	oi "github.com/reiver/go-oi"
 	telnet "github.com/reiver/go-telnet"
-	"moul.io/sshportal/pkg/dbmodels"
 )

 type bastionTelnetCaller struct {
@@ -76,7 +75,7 @@ func scannerSplitFunc(data []byte, atEOF bool) (advance int, token []byte, err e
 	return bufio.ScanLines(data, atEOF)
 }

-func telnetHandler(host *dbmodels.Host) ssh.Handler {
+func telnetHandler(host *Host) ssh.Handler {
 	return func(s ssh.Session) {
 		// FIXME: log session in db
 		//actx := s.Context().Value(authContextKey).(*authContext)
--- a/testserver_unsupported.go
+++ b/testserver_unsupported.go
@@ -1,14 +0,0 @@
-// +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")
-}
--- a/util.go
+++ b/util.go
@@ -0,0 +1,20 @@
+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] + "..."
+}