mongoose/docs/Options.md
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Mongoose Configuration Options

access_control_list

An Access Control List (ACL) allows restrictions to be put on the list of IP addresses which have access to the web server. In the case of the Mongoose web server, the ACL is a comma separated list of IP subnets, where each subnet is prepended by either a - or a + sign. A plus sign means allow, where a minus sign means deny. If a subnet mask is omitted, such as -1.2.3.4, this means to deny only that single IP address.

Subnet masks may vary from 0 to 32, inclusive. The default setting is to allow all accesses. On each request the full list is traversed, and the last match wins. Example: $ mongoose -access_control_list -0.0.0.0/0,+192.168/16 to deny all acccesses except from 192.168/16 subnet. To learn more about subnet masks, see the Wikipedia page on Subnetwork

Default: not set, all accesses are allowed.

access_log_file

Path to a file for access logs. Either full path, or relative to the mongoose executable. Default: not set, no query logging is done.

auth_domain

Authorization realm used in .htpasswd authorization. Default: mydomain.com

cgi_interpreter

Path to an executable to use as CGI interpreter for all CGI scripts regardless script extension. for an interpreter. Default: not set, Mongoose looks at [shebang line](http://en.wikipedia.org/wiki/Shebang_(Unix).

For example, if both PHP and perl CGIs are used, then #!/path/to/php-cgi.exe and #!/path/to/perl.exe must be first lines of the respective CGI scripts. Note that paths should be either full file paths, or file paths relative to the directory where mongoose server is located.

If all CGIs use the same interpreter, for example they are all PHP, then cgi_interpreter option can be set to the path to php-cgi.exe executable and shebang line in the CGI scripts can be omitted. Note that PHP scripts must use php-cgi.exe executable, not php.exe.

cgi_pattern

All files that match cgi_pattern are treated as CGI files. Default pattern allows CGI files be anywhere. To restrict CGIs to a certain directory, use /path/to/cgi-bin/**.cgi as pattern. Note that full file path is matched against the pattern, not the URI.

When Mongoose starts CGI program, it creates new environment for it (in contrast, usually child program inherits the environment from parent). Several environment variables however are inherited from Mongoose's environment, they are: PATH, TMP, TEMP, TMPDIR, PERLLIB, MONGOOSE_CGI. On UNIX it is also LD_LIBRARY_PATH. On Windows it is also COMSPEC, SYSTEMROOT, SystemDrive, ProgramFiles, ProgramFiles(x86), CommonProgramFiles(x86).

Default: **.cgi$|**.pl$|**.php$

dav_auth_file

Authentication file for WebDAV mutation requests: PUT, DELETE, MKCOL. The format of that file is the same as for the .htpasswd file used for digest authentication. It can be created and managed by mongoose -A command. Default: not set, WebDAV mutations are disallowed.

document_root

A directory to serve. Default: current working directory.

enable_directory_listing

Enable directory listing, either yes or no. Default: yes.

error_log_file

Path to a file for error logs. Either full path, or relative to the mongoose executable. Default: not set, no errors are logged.

extra_mime_types

Extra mime types to recognize, in form extension1=type1,extension2=type2,.... Extension must include dot. Example: mongoose -extra_mime_types .cpp=plain/text,.java=plain/text. Default: not set.

global_auth_file

Path to a global passwords file, either full path or relative to the mongoose executable. If set, per-directory .htpasswd files are ignored, and all requests are authorised against that file. Use mongoose -A to manage passwords, or third party utilities like htpasswd-generator. Default: not set, per-directory .htpasswd files are respected.

hide_files_patterns

A pattern for the files to hide. Files that match the pattern will not show up in directory listing and return 404 Not Found if requested. Pattern must be for a file name only, not including directory name, e.g. mongoose -hide_files_patterns secret.txt|even_more_secret.txt. Default: not set.

idle_timeout_ms

Timeout for idle connections. Default: 30000 (30 seconds)

index_files

Comma-separated list of files to be treated as directory index files. Default: index.html,index.htm,index.cgi,index.shtml,index.php

ssl_certificate

Path to SSL certificate file. The file must be in PEM format, and it must have both private key and certificate, see for example ssl_cert.pem. If this option is set, then Mongoose serves SSL connections on listening_port. Default: not set.

listening_port

Port to listen on. Port could be prepended by the specific IP address to bind to, e.g. mongoose -listening_port 127.0.0.1:8080. Otherwise Mongoose will bind to all addresses. Default: 8080.

run_as_user

Switch to given user credentials after startup. UNIX-only. This option is required when mongoose needs to bind on privileged port on UNIX, e.g.

$ sudo mongoose -listening_ports 80 -run_as_user nobody

Default: not set.

url_rewrites

Comma-separated list of URL rewrites in the form of uri_pattern=file_or_directory_path. When Mongoose receives the request, it constructs the file name to show by combining document_root and the URI. However, if the rewrite option is used and uri_pattern matches the requested URI, then document_root is ignored. Instead, file_or_directory_path is used, which should be a full path name or a path relative to the web server's current working directory. Note that uri_pattern, as all mongoose patterns, is a prefix pattern. If uri_pattern is a number, then it is treated as HTTP error code, and file_or_directory_path should be an URI to redirect to. Mongoose will issue 302 temporary redirect to the specified URI, appending two parameters: ?code=<http_error_code&orig_uri=<original_uri>.

This makes it possible to serve many directories outside from document_root, redirect all requests to scripts, and do other tricky things. Examples:

# Redirect all accesses to `.doc` files to a special script
mongoose -url_rewrites **.doc$=/path/to/cgi-bin/handle_doc.cgi

# Implement user home directories support
mongoose -url_rewrites /~joe/=/home/joe/,/~bill=/home/bill/

# Redirect 404 errors to a specific error page
mongoose -url_rewrites 404=/cgi-bin/error.cgi

Default: not set.