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https://git.sr.ht/~sircmpwn/gmnisrv
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156 lines
4.9 KiB
Markdown
156 lines
4.9 KiB
Markdown
gmnisrv.ini(5)
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# NAME
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*gmnisrv.ini* - configuration file for *gmnisrv*(1)
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# SYNTAX
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*gmnisrv.ini* is an INI file. Each line is either a key/value pair, or a section
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heading. Key/value pairs are specified as key=value, and sections as [section].
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# CONFIGURATION KEYS
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The meaning of the key depends on the section. Anonymous keys (prior to the
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first [section] directive) are used to specify parameters for the daemon itself.
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Sections whose name is prefixed with ":", e.g. [:tls], are sub-categories of
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the daemon configuration. Otherwise, section names refer to the hostnames of
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domains serviced by the *gmnisrv* daemon.
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## ANONYMOUS KEYS
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*listen*
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A space-separated list of addresses that the daemon shall bind to. Each
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address shall take the format *address*:*port*. If :*port* is omitted,
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1965 (the default Gemini port) is presumed. To specify an IPv6 address,
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enclose it in *[]*, e.g. *[::]*.
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## TLS KEYS
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The following keys are accepted under the *[:tls]* section:
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*store*
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Path to the certificate store on disk. This should be a persistent
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directory writable by the daemon. The daemon manages its own
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certificates - no user intervention is required, except in the case of
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moving the daemon to another host, in which case the certificate store
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must be copied to the new host.
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*organization*
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An optional key used during certificate generation. Fill this in with
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the name of the organization responsible for the host and it will be
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filled in as the X.509 /O name.
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## ROUTING KEYS
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To configure *gmnisrv* to service requests, routing keys must be defined. The
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name of the configuration section is used to determine what kinds of requests it
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configures.
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The format of the section name is the _hostname_ to be serviced, followed by a
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token which defines the routing strategy, and a string whose format is specific
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to each routing strategy. The token and match string may be omitted
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(i.e. [_hostname_] alone), which implies path routing against "/".
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|] *:*
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:< Route by path prefix. The URL path is compared to "_string_/".
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| *=*
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: Exact match. The URL path must exactly match the string.
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| *~*
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: Regular expression routing. The string is a JavaScript-compatible regular
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expression which is tested against the URL path.
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Some example section names and examples of matching paths:
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|[ *[example.org:/foo]*
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:< /foo, /foo/bar, /foo/bar/baz
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| *[example.org=/foo.txt]*
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: /foo.txt
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| *[example.org~/[a-z]+\\.(png|jpg|webp)*
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: /foo.png, /bar.webp
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Routes should be ordered from least to most specific. The matching algorithm
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attempts to match the URL against each route in reverse order, and chooses the
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first route which matches.
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Within each routing section, the following keys are used to configure how
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*gmnisrv* will respond to matching requests:
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*root*
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Configures the path on disk from which files shall be served for this
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host. If using path prefix matching, the prefix is trimmed, so if
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example.org/foo/bar.txt is requested and matches *[example.org:/foo]*,
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"bar.txt" will be appended to the root to form the file path.
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*index*
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Configures the name of the index file which shall be served in the event
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that a request for this host does not include the filename part.
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Defaults to "index.gmi".
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*autoindex*
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"on" to enable the auto-index feature, which presents clients with a
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list of files in the requested directory when an index file cannot be
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found. Off by default.
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*cgi*
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"on" to enable CGI support. *root* must also be configured. See "CGI
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Support" for details.
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# CGI Support
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*gmnisrv* supports a limited version of CGI, compatible with the Jetforce
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server. It is not a faithful implementation of RFC 3875, but is sufficient for
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most of the needs of Gemini servers.
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Set *cgi=on* for a route configuration to enable CGI for that route and set
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*root* to the path where the CGI scripts are found. If a client requests a
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script, it will be executed, and must print a Gemini response (including status
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code and meta) to stdout.
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The following environment variables will be set:
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[[ *Variable*
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:[ *Example*
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:< *Description*
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| *GATEWAY_INTERFACE*
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: GCI/1.1
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: CGI version
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| *SERVER_PROTOCOL*
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: GEMINI
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: The server protocol
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| *SERVER_SOFTWARE*
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: gmnisrv/0.0.0
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: The gmnisrv server name and version
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| *GEMINI_URL*
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: See [1]
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: The URL requested by the client
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| *SCRIPT_NAME*
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: /cgi-bin/foo.sh
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: The portion of the URL referring to the script name.
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| *PATH_INFO*
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: /bar
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: The remainder of the path following *SCRIPT_NAME*.
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| *QUERY_STRING*
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: hello=world
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: The query string portion of the URL.
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| *SERVER_NAME*, *HOSTNAME*
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: example.org
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: The server host name.
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| *SERVER_PORT*
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: 1965
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: The server port number.
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| *REMOTE_HOST*, *REMOTE_ADDR*
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: 10.10.0.2
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: The clients IP address.
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| *TLS_CIPHER*
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: TLS_AES_256_GCM_SHA384
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: The negotiated TLS cipher.
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| *TLS_VERSION*
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: TLSv1.3
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: The negotiated TLS version.
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\[1]: gemini://example.org/cgi-bin/foo.sh/bar?hello=world
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The exit status of the script is ignored.
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