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1 7edcf2b3 2023-06-24 op .\" Copyright (c) 2022, 2023 Omar Polo <op@omarpolo.com>
2 1595c277 2022-04-07 op .\"
3 1595c277 2022-04-07 op .\" Permission to use, copy, modify, and distribute this software for any
4 1595c277 2022-04-07 op .\" purpose with or without fee is hereby granted, provided that the above
5 1595c277 2022-04-07 op .\" copyright notice and this permission notice appear in all copies.
6 1595c277 2022-04-07 op .\"
7 1595c277 2022-04-07 op .\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
8 1595c277 2022-04-07 op .\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
9 1595c277 2022-04-07 op .\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
10 1595c277 2022-04-07 op .\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
11 1595c277 2022-04-07 op .\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
12 1595c277 2022-04-07 op .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
13 1595c277 2022-04-07 op .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
14 56d32bb5 2023-07-24 op .Dd July 24, 2023
15 1595c277 2022-04-07 op .Dt GMID.CONF 5
16 1595c277 2022-04-07 op .Os
17 1595c277 2022-04-07 op .Sh NAME
18 1595c277 2022-04-07 op .Nm gmid.conf
19 1595c277 2022-04-07 op .Nd gmid Gemini server configuration file
20 1595c277 2022-04-07 op .Sh DESCRIPTION
21 1595c277 2022-04-07 op .Nm
22 1595c277 2022-04-07 op is the configuration file format for the
23 9b15e4c6 2022-09-08 op .Xr gmid 8
24 1595c277 2022-04-07 op Gemini server.
25 1595c277 2022-04-07 op .Pp
26 7edcf2b3 2023-06-24 op The configuration file is divided into the following sections:
27 7edcf2b3 2023-06-24 op .Bl -tag -width Ds
28 1595c277 2022-04-07 op .It Sy Macros
29 1595c277 2022-04-07 op User-defined variables may be defined and used later, simplifying the
30 1595c277 2022-04-07 op configuration file.
31 1595c277 2022-04-07 op .It Sy Global Options
32 1595c277 2022-04-07 op Global settings for
33 7edcf2b3 2023-06-24 op .Xr gmid 8 .
34 1595c277 2022-04-07 op .It Sy Servers
35 1595c277 2022-04-07 op Virtual hosts definition.
36 1595c277 2022-04-07 op .It Sy Types
37 1595c277 2022-04-07 op Media types and extensions.
38 1595c277 2022-04-07 op .El
39 1595c277 2022-04-07 op .Pp
40 1595c277 2022-04-07 op Within the sections, empty lines are ignored and comments can be put
41 1595c277 2022-04-07 op anywhere in the file using a hash mark
42 7edcf2b3 2023-06-24 op .Pq Sq #
43 1595c277 2022-04-07 op and extend to the end of the current line.
44 1595c277 2022-04-07 op A boolean is either the symbol
45 1595c277 2022-04-07 op .Sq on
46 1595c277 2022-04-07 op or
47 1595c277 2022-04-07 op .Sq off .
48 1595c277 2022-04-07 op A string is a sequence of characters wrapped in double quotes,
49 1595c277 2022-04-07 op .Dq like this .
50 1595c277 2022-04-07 op Multiple strings one next to the other are joined into a single
51 1595c277 2022-04-07 op string:
52 1595c277 2022-04-07 op .Bd -literal -offset indent
53 1595c277 2022-04-07 op # equivalent to "temporary-failure"
54 1595c277 2022-04-07 op block return 40 "temporary" "-" "failure"
55 1595c277 2022-04-07 op .Ed
56 1595c277 2022-04-07 op .Pp
57 1595c277 2022-04-07 op Furthermore, quoting is necessary only when a string needs to contain
58 1595c277 2022-04-07 op special characters
59 1595c277 2022-04-07 op .Pq like spaces or punctuation ,
60 1595c277 2022-04-07 op something that looks like a number or a reserved keyword.
61 1595c277 2022-04-07 op The last example could have been written also as:
62 1595c277 2022-04-07 op .Bd -literal -offset indent
63 1595c277 2022-04-07 op block return 40 temporary "-" failure
64 1595c277 2022-04-07 op .Ed
65 1595c277 2022-04-07 op .Pp
66 1595c277 2022-04-07 op Strict ordering of the sections is not enforced, so that is possible
67 1595c277 2022-04-07 op to mix macros, options and
68 1595c277 2022-04-07 op .Ic server
69 1595c277 2022-04-07 op blocks.
70 1595c277 2022-04-07 op However, defining all the
71 1595c277 2022-04-07 op .Ic server
72 1595c277 2022-04-07 op blocks after the macros and the global options is recommended.
73 1595c277 2022-04-07 op .Pp
74 1595c277 2022-04-07 op Newlines are often optional, except around top-level instructions, and
75 1595c277 2022-04-07 op semicolons
76 1595c277 2022-04-07 op .Dq \&;
77 1595c277 2022-04-07 op can also be optionally used to separate options.
78 1595c277 2022-04-07 op .Pp
79 1595c277 2022-04-07 op Additional configuration files can be included with the
80 1595c277 2022-04-07 op .Ic include
81 1595c277 2022-04-07 op keyword, for example:
82 1595c277 2022-04-07 op .Bd -literal -offset indent
83 1595c277 2022-04-07 op include "/etc/gmid.conf.local"
84 1595c277 2022-04-07 op .Ed
85 1595c277 2022-04-07 op .Ss Macros
86 1595c277 2022-04-07 op Macros can be defined that will later be expanded in context.
87 1595c277 2022-04-07 op Macro names must start with a letter, digit or underscore and may
88 1595c277 2022-04-07 op contain any of those characters.
89 1595c277 2022-04-07 op Macros names may not be reserved words.
90 1595c277 2022-04-07 op Macros are not expanded inside quotes.
91 1595c277 2022-04-07 op .Pp
92 1595c277 2022-04-07 op Two kinds of macros are supported: variable-like and proper macros.
93 1595c277 2022-04-07 op When a macro is invoked with a
94 1595c277 2022-04-07 op .Dq $
95 1595c277 2022-04-07 op before its name its expanded as a string, whereas when it's invoked
96 1595c277 2022-04-07 op with a
97 1595c277 2022-04-07 op .Dq @
98 1595c277 2022-04-07 op its expanded in-place.
99 1595c277 2022-04-07 op .Pp
100 1595c277 2022-04-07 op For example:
101 1595c277 2022-04-07 op .Bd -literal -offset indent
102 547437cc 2023-08-01 op ext_ip = "10.0.0.1"
103 1595c277 2022-04-07 op dir = "/var/gemini"
104 1595c277 2022-04-07 op certdir = "/etc/keys"
105 1595c277 2022-04-07 op common = "lang it; auto index on"
106 1595c277 2022-04-07 op
107 1595c277 2022-04-07 op server "foo" {
108 547437cc 2023-08-01 op listen on $ext_ip
109 7edcf2b3 2023-06-24 op root $dir "/foo" # "/var/gemini/foo"
110 7edcf2b3 2023-06-24 op cert $certdir "/foo.pem" # "/etc/keys/foo.pem"
111 7edcf2b3 2023-06-24 op key $certdir "/foo.key" # "/etc/keys/foo.key"
112 1595c277 2022-04-07 op @common
113 1595c277 2022-04-07 op }
114 1595c277 2022-04-07 op .Ed
115 1595c277 2022-04-07 op .Ss Global Options
116 1595c277 2022-04-07 op .Bl -tag -width 12m
117 1595c277 2022-04-07 op .It Ic chroot Ar path
118 1595c277 2022-04-07 op .Xr chroot 2
119 1595c277 2022-04-07 op the process to the given
120 1595c277 2022-04-07 op .Ar path .
121 1595c277 2022-04-07 op The daemon has to be run with root privileges and thus the option
122 1595c277 2022-04-07 op .Ic user
123 7edcf2b3 2023-06-24 op needs to be provided too, so privileges can be dropped afterwards.
124 7edcf2b3 2023-06-24 op All the paths in the configuration file are relative to the chroot
125 7edcf2b3 2023-06-24 op directory, except for the
126 7edcf2b3 2023-06-24 op .Ic cert ,
127 7edcf2b3 2023-06-24 op .Ic key
128 7edcf2b3 2023-06-24 op and
129 7edcf2b3 2023-06-24 op .Ic ocsp
130 7edcf2b3 2023-06-24 op paths.
131 287ab865 2023-06-24 op Defaults to the
132 287ab865 2023-06-24 op .Ic user
133 287ab865 2023-06-24 op home directory, if provided.
134 226f13ec 2023-07-24 op .It Ic log Ar options
135 226f13ec 2023-07-24 op Specify logging options.
136 226f13ec 2023-07-24 op Multiple options may be provided within curly braces.
137 226f13ec 2023-07-24 op The available options are as follows:
138 226f13ec 2023-07-24 op .Bl -tag -width Ds
139 226f13ec 2023-07-24 op .It Ic access Ar file
140 226f13ec 2023-07-24 op Log the requests to
141 226f13ec 2023-07-24 op .Ar file .
142 4acf495f 2023-07-24 op The path is relative to the
143 4acf495f 2023-07-24 op .Ic chroot .
144 abd261d2 2023-07-25 op .It Ic style Ar style
145 abd261d2 2023-07-25 op Set the logging style, defaults to
146 f23b7087 2023-08-04 op .Ic legacy .
147 abd261d2 2023-07-25 op The
148 abd261d2 2023-07-25 op .Ar style
149 abd261d2 2023-07-25 op can be one of:
150 abd261d2 2023-07-25 op .Bl -tag -width Ds
151 abd261d2 2023-07-25 op .It Ic common
152 abd261d2 2023-07-25 op Attempt to be compatible with the default Apache httpd log format.
153 abd261d2 2023-07-25 op Each line is formatted as follows: the matching host name,
154 abd261d2 2023-07-25 op the remote IP address, one dash
155 abd261d2 2023-07-25 op .Sq - ,
156 abd261d2 2023-07-25 op Common Name of the client certificate
157 abd261d2 2023-07-25 op .Pq if provided, '-' otherwise ,
158 abd261d2 2023-07-25 op the timestamp of the request, the request URI wrapped in double quotes,
159 abd261d2 2023-07-25 op the response code and the size of the response.
160 abd261d2 2023-07-25 op .It Ic combined
161 abd261d2 2023-07-25 op Attempt to be compatible with the default nginx log format.
162 abd261d2 2023-07-25 op Each line is formatted as follows: the remote IP address, one dash
163 abd261d2 2023-07-25 op .Sq - ,
164 abd261d2 2023-07-25 op Common Name of the client certificate
165 abd261d2 2023-07-25 op .Pq if provided, '-' otherwise ,
166 abd261d2 2023-07-25 op the timestamp wrapped in square brackets, the request URI wrapped in
167 abd261d2 2023-07-25 op double quotes, the response code, the size of the response, a dash
168 abd261d2 2023-07-25 op wrapped in double quotes and "".
169 abd261d2 2023-07-25 op The strangness of these two last fields is because Gemini doesn't have
170 abd261d2 2023-07-25 op the notion of the
171 abd261d2 2023-07-25 op .Dq Referer
172 abd261d2 2023-07-25 op header nor the
173 abd261d2 2023-07-25 op .Dq User-agent .
174 a250aff2 2023-08-04 op .\" .It Ic condensed
175 a250aff2 2023-08-04 op .\" The native
176 a250aff2 2023-08-04 op .\" .Xr gmid 8
177 a250aff2 2023-08-04 op .\" format since 2.0.
178 a250aff2 2023-08-04 op .\" Each line is formatted as follows: RFC 3339 date time,
179 a250aff2 2023-08-04 op .\" remote IP address, Common Name of the client certificate
180 a250aff2 2023-08-04 op .\" .Pq if provided, '-' otherwise ,
181 a250aff2 2023-08-04 op .\" the matching host name, the request URI, the size of the request,
182 a250aff2 2023-08-04 op .\" the size of the response, the response code and meta.
183 abd261d2 2023-07-25 op .It Ic legacy
184 abd261d2 2023-07-25 op Each line is formatted as follows: the remote IP address and port, the
185 abd261d2 2023-07-25 op .Sq GET
186 abd261d2 2023-07-25 op keyword, the request URI, the response code and meta.
187 226f13ec 2023-07-24 op .El
188 0c39da51 2023-07-26 op .It Ic syslog Op Ic off
189 0c39da51 2023-07-26 op Log to syslog.
190 0c39da51 2023-07-26 op It is enabled by default, use the
191 0c39da51 2023-07-26 op .Ic off
192 0c39da51 2023-07-26 op argument to disable.
193 9abba172 2023-08-07 op .It Ic syslog facility Ar facility
194 9abba172 2023-08-07 op Log to
195 9abba172 2023-08-07 op .Xr syslog 3
196 9abba172 2023-08-07 op using specified
197 9abba172 2023-08-07 op .Ar facility .
198 9abba172 2023-08-07 op Available facilities are as follows: daemon, ftp, local0 through local7 and
199 9abba172 2023-08-07 op user.
200 9abba172 2023-08-07 op These are case insensitive and can be prefixed with
201 9abba172 2023-08-07 op .Sq LOG_ .
202 9abba172 2023-08-07 op Not all level may be available on all operating systems.
203 9abba172 2023-08-07 op The default facility is
204 9abba172 2023-08-07 op .Ev LOG_DAEMON .
205 abd261d2 2023-07-25 op .El
206 1595c277 2022-04-07 op .It Ic prefork Ar number
207 1595c277 2022-04-07 op Run the specified number of server processes.
208 1595c277 2022-04-07 op This increases the performance and prevents delays when connecting to
209 1595c277 2022-04-07 op a server.
210 7edcf2b3 2023-06-24 op .Xr gmid 8
211 1595c277 2022-04-07 op runs 3 server processes by default.
212 1595c277 2022-04-07 op The maximum number allowed is 16.
213 1595c277 2022-04-07 op .It Ic protocols Ar string
214 1595c277 2022-04-07 op Specify the TLS protocols to enable.
215 1595c277 2022-04-07 op Refer to
216 1595c277 2022-04-07 op .Xr tls_config_parse_protocols 3
217 1595c277 2022-04-07 op for the valid protocol string values.
218 1595c277 2022-04-07 op By default, both TLSv1.3 and TLSv1.2 are enabled.
219 1595c277 2022-04-07 op Use
220 1595c277 2022-04-07 op .Dq tlsv1.3
221 1595c277 2022-04-07 op to enable only TLSv1.3.
222 1595c277 2022-04-07 op .It Ic user Ar string
223 1595c277 2022-04-07 op Run the daemon as the given user.
224 2c079c9e 2023-08-01 op Mandatory if the
225 2c079c9e 2023-08-01 op .Ic chroot
226 2c079c9e 2023-08-01 op option is used.
227 1595c277 2022-04-07 op .El
228 1595c277 2022-04-07 op .Ss Servers
229 1595c277 2022-04-07 op Every virtual host is defined by a
230 1595c277 2022-04-07 op .Ic server
231 1595c277 2022-04-07 op block:
232 1595c277 2022-04-07 op .Bl -tag -width Ds
233 1595c277 2022-04-07 op .It Ic server Ar hostname Brq ...
234 1595c277 2022-04-07 op Match the server name using shell globbing rules.
235 1595c277 2022-04-07 op It can be an explicit name,
236 1595c277 2022-04-07 op .Ar www.example.com ,
237 1595c277 2022-04-07 op or a name including a wildcards,
238 1595c277 2022-04-07 op .Ar *.example.com .
239 1595c277 2022-04-07 op .El
240 1595c277 2022-04-07 op .Pp
241 1595c277 2022-04-07 op Followed by a block of options that is enclosed in curly brackets:
242 1595c277 2022-04-07 op .Bl -tag -width Ds
243 1595c277 2022-04-07 op .It Ic alias Ar name
244 1595c277 2022-04-07 op Specify an additional alias
245 1595c277 2022-04-07 op .Ar name
246 1595c277 2022-04-07 op for this server.
247 1595c277 2022-04-07 op .It Ic auto Ic index Ar bool
248 1595c277 2022-04-07 op If no index file is found, automatically generate a directory listing.
249 1595c277 2022-04-07 op Disabled by default.
250 1595c277 2022-04-07 op .It Ic block Op Ic return Ar code Op Ar meta
251 1595c277 2022-04-07 op Send a reply and close the connection;
252 1595c277 2022-04-07 op by default
253 1595c277 2022-04-07 op .Ar code
254 1595c277 2022-04-07 op is 40
255 1595c277 2022-04-07 op and
256 1595c277 2022-04-07 op .Ar meta
257 1595c277 2022-04-07 op is
258 1595c277 2022-04-07 op .Dq temporary failure .
259 1595c277 2022-04-07 op If
260 1595c277 2022-04-07 op .Ar code
261 1595c277 2022-04-07 op is in the 3x range, then
262 1595c277 2022-04-07 op .Ar meta
263 1595c277 2022-04-07 op is mandatory.
264 1595c277 2022-04-07 op Inside
265 1595c277 2022-04-07 op .Ar meta ,
266 1595c277 2022-04-07 op the following special sequences are supported:
267 1595c277 2022-04-07 op .Bl -tag -width Ds -compact
268 1595c277 2022-04-07 op .It \&%\&%
269 1595c277 2022-04-07 op is replaced with a single
270 1595c277 2022-04-07 op .Sq \&% .
271 1595c277 2022-04-07 op .It \&%p
272 1595c277 2022-04-07 op is replaced with the request path.
273 1595c277 2022-04-07 op .It \&%q
274 1595c277 2022-04-07 op is replaced with the query string of the request.
275 1595c277 2022-04-07 op .It \&%P
276 1595c277 2022-04-07 op is replaced with the server port.
277 1595c277 2022-04-07 op .It \&%N
278 1595c277 2022-04-07 op is replaced with the server name.
279 1595c277 2022-04-07 op .El
280 1595c277 2022-04-07 op .It Ic cert Ar file
281 1595c277 2022-04-07 op Path to the certificate to use for this server.
282 1595c277 2022-04-07 op .Ar file
283 1595c277 2022-04-07 op should contain a PEM encoded certificate.
284 1595c277 2022-04-07 op This option is mandatory.
285 9b15e4c6 2022-09-08 op .It Ic default type Ar string
286 9b15e4c6 2022-09-08 op Set the default media type that is used if the media type for a
287 9b15e4c6 2022-09-08 op specified extension is not found.
288 9b15e4c6 2022-09-08 op If not specified, the
289 9b15e4c6 2022-09-08 op .Ic default type
290 9b15e4c6 2022-09-08 op is set to
291 9b15e4c6 2022-09-08 op .Dq application/octet-stream .
292 a1ba9650 2023-07-23 op .It Ic fastcgi Ar option
293 a1ba9650 2023-07-23 op Enable FastCGI instead of serving files.
294 a1ba9650 2023-07-23 op Multiple options may be specified within curly braces.
295 a1ba9650 2023-07-23 op Valid options are:
296 a1ba9650 2023-07-23 op .Bl -tag -width Ds
297 a1ba9650 2023-07-23 op .It Ic param Ar name Cm = Ar value
298 a1ba9650 2023-07-23 op Set the param
299 a1ba9650 2023-07-23 op .Ar name
300 a1ba9650 2023-07-23 op to
301 a1ba9650 2023-07-23 op .Ar value .
302 a1ba9650 2023-07-23 op .It Ic socket Oo Ic tcp Oc Ar socket Oo Cm port Ar port Oc
303 9b15e4c6 2022-09-08 op The
304 9b15e4c6 2022-09-08 op .Ar socket
305 9b15e4c6 2022-09-08 op can either be a UNIX-domain socket or a TCP socket.
306 9b15e4c6 2022-09-08 op If the FastCGI application is listening on a UNIX domain socket,
307 9b15e4c6 2022-09-08 op .Ar socket
308 9b15e4c6 2022-09-08 op is a local path name within the
309 9b15e4c6 2022-09-08 op .Xr chroot 2
310 9b15e4c6 2022-09-08 op root directory of
311 c2bcf6a4 2023-08-03 op .Xr gmid 8 .
312 9b15e4c6 2022-09-08 op Otherwise, the
313 9b15e4c6 2022-09-08 op .Ic tcp
314 9b15e4c6 2022-09-08 op keyword must be provided and
315 9b15e4c6 2022-09-08 op .Ar socket
316 9b15e4c6 2022-09-08 op is interpreted as a hostname or an IP address.
317 9b15e4c6 2022-09-08 op .Ar port
318 9b15e4c6 2022-09-08 op can be either a port number or the name of a service enclosed in
319 9b15e4c6 2022-09-08 op double quotes.
320 9b15e4c6 2022-09-08 op If not specified defaults to 9000.
321 03d671e2 2023-08-08 op .It Ic strip Ar number
322 03d671e2 2023-08-08 op Strip
323 03d671e2 2023-08-08 op .Ar number
324 03d671e2 2023-08-08 op leading path components from the
325 a1ba9650 2023-07-23 op .El
326 a1ba9650 2023-07-23 op .Pp
327 a1ba9650 2023-07-23 op The FastCGI handler will be given the following variables by default:
328 1595c277 2022-04-07 op .Bl -tag -width 24m
329 1595c277 2022-04-07 op .It Ev GATEWAY_INTERFACE
330 1595c277 2022-04-07 op .Dq CGI/1.1
331 1595c277 2022-04-07 op .It Ev GEMINI_DOCUMENT_ROOT
332 1595c277 2022-04-07 op The root directory of the virtual host.
333 1595c277 2022-04-07 op .It Ev GEMINI_SCRIPT_FILENAME
334 9b15e4c6 2022-09-08 op Full path to the FastCGI script being executed.
335 1595c277 2022-04-07 op .It Ev GEMINI_URL
336 1595c277 2022-04-07 op The full IRI of the request.
337 1595c277 2022-04-07 op .It Ev GEMINI_URL_PATH
338 1595c277 2022-04-07 op The path of the request.
339 97b306cb 2022-11-27 op .It Ev GEMINI_SEARCH_STRING
340 97b306cb 2022-11-27 op The decoded
341 97b306cb 2022-11-27 op .Ev QUERY_STRING
342 97b306cb 2022-11-27 op if defined in the request and if it doesn't contain any unencoded
343 97b306cb 2022-11-27 op .Sq =
344 97b306cb 2022-11-27 op characters, otherwise unset.
345 1595c277 2022-04-07 op .It Ev PATH_INFO
346 1595c277 2022-04-07 op The portion of the requested path that is derived from the the IRI
347 1595c277 2022-04-07 op path hierarchy following the part that identifies the script itself.
348 1595c277 2022-04-07 op Can be unset.
349 1595c277 2022-04-07 op .It Ev PATH_TRANSLATED
350 1595c277 2022-04-07 op Present if and only if
351 1595c277 2022-04-07 op .Ev PATH_INFO
352 1595c277 2022-04-07 op is set.
353 1595c277 2022-04-07 op It represent the translation of the
354 1595c277 2022-04-07 op .Ev PATH_INFO .
355 1595c277 2022-04-07 op .Nm gmid
356 1595c277 2022-04-07 op builds this by appending the
357 1595c277 2022-04-07 op .Ev PATH_INFO
358 1595c277 2022-04-07 op to the virtual host directory root.
359 1595c277 2022-04-07 op .It Ev QUERY_STRING
360 77718c12 2022-11-27 op The URL-encoded search or parameter string.
361 1595c277 2022-04-07 op .It Ev REMOTE_ADDR , Ev REMOTE_HOST
362 1595c277 2022-04-07 op Textual representation of the client IP.
363 1595c277 2022-04-07 op .It Ev REQUEST_METHOD
364 1595c277 2022-04-07 op This is present only for RFC3875 (CGI) compliance.
365 1595c277 2022-04-07 op It's always set to the empty string.
366 1595c277 2022-04-07 op .It Ev SCRIPT_NAME
367 9b15e4c6 2022-09-08 op The virtual URI path to the script.
368 1595c277 2022-04-07 op .It Ev SERVER_NAME
369 1595c277 2022-04-07 op The name of the server
370 1595c277 2022-04-07 op .It Ev SERVER_PORT
371 1595c277 2022-04-07 op The port the server is listening on.
372 1595c277 2022-04-07 op .It Ev SERVER_PROTOCOL
373 1595c277 2022-04-07 op .Dq GEMINI
374 1595c277 2022-04-07 op .It Ev SERVER_SOFTWARE
375 1595c277 2022-04-07 op The name and version of the server, i.e.
376 1f6de749 2022-07-04 op .Dq gmid/1.8.4
377 1595c277 2022-04-07 op .It Ev AUTH_TYPE
378 1595c277 2022-04-07 op The string "Certificate" if the client used a certificate, otherwise
379 1595c277 2022-04-07 op unset.
380 1595c277 2022-04-07 op .It Ev REMOTE_USER
381 1595c277 2022-04-07 op The subject of the client certificate if provided, otherwise unset.
382 1595c277 2022-04-07 op .It Ev TLS_CLIENT_ISSUER
383 1595c277 2022-04-07 op The is the issuer of the client certificate if provided, otherwise
384 1595c277 2022-04-07 op unset.
385 1595c277 2022-04-07 op .It Ev TLS_CLIENT_HASH
386 1595c277 2022-04-07 op The hash of the client certificate if provided, otherwise unset.
387 1595c277 2022-04-07 op The format is
388 1595c277 2022-04-07 op .Dq ALGO:HASH .
389 1595c277 2022-04-07 op .It Ev TLS_VERSION
390 1595c277 2022-04-07 op The TLS version negotiated with the peer.
391 1595c277 2022-04-07 op .It Ev TLS_CIPHER
392 1595c277 2022-04-07 op The cipher suite negotiated with the peer.
393 1595c277 2022-04-07 op .It Ev TLS_CIPHER_STRENGTH
394 1595c277 2022-04-07 op The strength in bits for the symmetric cipher that is being used with
395 1595c277 2022-04-07 op the peer.
396 1595c277 2022-04-07 op .It Ev TLS_CLIENT_NOT_AFTER
397 1595c277 2022-04-07 op The time corresponding to the end of the validity period of the peer
398 1595c277 2022-04-07 op certificate in the ISO 8601 format
399 1595c277 2022-04-07 op .Pq e.g. Dq 2021-02-07T20:17:41Z .
400 1595c277 2022-04-07 op .It Ev TLS_CLIENT_NOT_BEFORE
401 1595c277 2022-04-07 op The time corresponding to the start of the validity period of the peer
402 1595c277 2022-04-07 op certificate in the ISO 8601 format.
403 1595c277 2022-04-07 op .El
404 6a8387e5 2023-07-23 op .It Ic fastcgi off
405 6a8387e5 2023-07-23 op Disable FastCGI handling in the current location.
406 a1ba9650 2023-07-23 op .It Ic index Ar string
407 a1ba9650 2023-07-23 op Set the directory index file.
408 a1ba9650 2023-07-23 op If not specified, it defaults to
409 a1ba9650 2023-07-23 op .Pa index.gmi .
410 a1ba9650 2023-07-23 op .It Ic key Ar file
411 a1ba9650 2023-07-23 op Specify the private key to use for this server.
412 a1ba9650 2023-07-23 op .Ar file
413 a1ba9650 2023-07-23 op should contain a PEM encoded private key.
414 a1ba9650 2023-07-23 op This option is mandatory.
415 a1ba9650 2023-07-23 op .It Ic lang Ar string
416 a1ba9650 2023-07-23 op Specify the language tag for the text/gemini content served.
417 a1ba9650 2023-07-23 op If not specified, no
418 a1ba9650 2023-07-23 op .Dq lang
419 a1ba9650 2023-07-23 op parameter will be added in the response.
420 a1ba9650 2023-07-23 op .It Ic listen on Ar address Op Ic port Ar number
421 a1ba9650 2023-07-23 op Set the listen
422 a1ba9650 2023-07-23 op .Ar address
423 a1ba9650 2023-07-23 op and
424 a1ba9650 2023-07-23 op .Ar port
425 a1ba9650 2023-07-23 op which defaults to
426 a1ba9650 2023-07-23 op .Sq 1965 .
427 a1ba9650 2023-07-23 op This statement can be specified multiple times.
428 a1ba9650 2023-07-23 op If
429 a1ba9650 2023-07-23 op .Ar address
430 a1ba9650 2023-07-23 op is
431 a1ba9650 2023-07-23 op .Sq *
432 a1ba9650 2023-07-23 op then
433 a1ba9650 2023-07-23 op .Xr gmid 8
434 a1ba9650 2023-07-23 op will listen on all IPv4 and IPv6 addresses.
435 a1ba9650 2023-07-23 op .Ar 0.0.0.0
436 a1ba9650 2023-07-23 op can be used to listen on all IPv4 addresses and
437 a1ba9650 2023-07-23 op .Ar ::
438 a1ba9650 2023-07-23 op on all IPv6 addresses.
439 a1ba9650 2023-07-23 op .It Ic location Ar path Brq ...
440 a1ba9650 2023-07-23 op Specify server configuration rules for a specific location.
441 a1ba9650 2023-07-23 op .Ar path
442 a1ba9650 2023-07-23 op argument will be matched against the request path with shell globbing
443 a1ba9650 2023-07-23 op rules.
444 a1ba9650 2023-07-23 op In case of multiple location statements in the same context, the first
445 a1ba9650 2023-07-23 op matching location will be put into effect and the later ones ignored.
446 a1ba9650 2023-07-23 op Therefore is advisable to match for more specific paths first and for
447 a1ba9650 2023-07-23 op generic ones later on.
448 a1ba9650 2023-07-23 op A
449 a1ba9650 2023-07-23 op .Ic location
450 a1ba9650 2023-07-23 op section may include most of the server configuration rules
451 a1ba9650 2023-07-23 op except
452 a1ba9650 2023-07-23 op .Ic alias , Ic cert , Ic key , Ic listen , Ic location
453 a1ba9650 2023-07-23 op and
454 a1ba9650 2023-07-23 op .Ic proxy .
455 a1ba9650 2023-07-23 op .It Ic log Ar bool
456 a1ba9650 2023-07-23 op Enable or disable the logging for the current server or location block.
457 1595c277 2022-04-07 op .It Ic ocsp Ar file
458 1595c277 2022-04-07 op Specify an OCSP response to be stapled during TLS handshakes
459 1595c277 2022-04-07 op with this server.
460 1595c277 2022-04-07 op The
461 1595c277 2022-04-07 op .Ar file
462 1595c277 2022-04-07 op should contain a DER-format OCSP response retrieved from an
463 1595c277 2022-04-07 op OCSP server for the
464 1595c277 2022-04-07 op .Ic cert
465 1595c277 2022-04-07 op in use.
466 1595c277 2022-04-07 op If the OCSP response in
467 1595c277 2022-04-07 op .Ar file
468 1595c277 2022-04-07 op is empty, OCSP stapling will not be used.
469 1595c277 2022-04-07 op The default is to not use OCSP stapling.
470 d2da235a 2022-10-05 op .It Ic proxy Oo Cm proto Ar name Oc Oo Cm for-host Ar host Oo Cm port Ar port Oc Oc Brq ...
471 1595c277 2022-04-07 op Set up a reverse proxy.
472 1595c277 2022-04-07 op The optional matching rules
473 1595c277 2022-04-07 op .Cm proto
474 1595c277 2022-04-07 op and
475 1595c277 2022-04-07 op .Cm for-host
476 1595c277 2022-04-07 op can be used to enable proxying only for protocols matching
477 1595c277 2022-04-07 op .Ar name
478 1595c277 2022-04-07 op .Po Dq gemini
479 1595c277 2022-04-07 op by default
480 1595c277 2022-04-07 op .Pc
481 1595c277 2022-04-07 op and/or whose request IRI matches
482 1595c277 2022-04-07 op .Ar host
483 1595c277 2022-04-07 op and
484 1595c277 2022-04-07 op .Ar port
485 1595c277 2022-04-07 op .Pq 1965 by default .
486 1595c277 2022-04-07 op Matching happens using shell globbing rules.
487 1595c277 2022-04-07 op .Pp
488 1595c277 2022-04-07 op In case of multiple matching proxy blocks in the same context, the
489 1595c277 2022-04-07 op first matching proxy will be put into effect and the later ones
490 1595c277 2022-04-07 op ignored.
491 1595c277 2022-04-07 op .Pp
492 1595c277 2022-04-07 op Valid options are:
493 1595c277 2022-04-07 op .Bl -tag -width Ds
494 1595c277 2022-04-07 op .It Ic cert Ar file
495 1595c277 2022-04-07 op Specify the client certificate to use when making requests.
496 1595c277 2022-04-07 op .It Ic key Ar file
497 1595c277 2022-04-07 op Specify the client certificate key to use when making requests.
498 1595c277 2022-04-07 op .It Ic protocols Ar string
499 1595c277 2022-04-07 op Specify the TLS protocols allowed when making remote requests.
500 1595c277 2022-04-07 op Refer to the
501 1595c277 2022-04-07 op .Xr tls_config_parse_protocols 3
502 1595c277 2022-04-07 op function for the valid protocol string values.
503 1595c277 2022-04-07 op By default, both TLSv1.2 and TLSv1.3 are enabled.
504 d2da235a 2022-10-05 op .It Ic relay-to Ar host Op Cm port Ar port
505 1595c277 2022-04-07 op Relay the request to the given
506 1595c277 2022-04-07 op .Ar host
507 1595c277 2022-04-07 op at the given
508 1595c277 2022-04-07 op .Ar port ,
509 1595c277 2022-04-07 op 1965 by default.
510 1595c277 2022-04-07 op This is the only mandatory option in a
511 1595c277 2022-04-07 op .Ic proxy
512 1595c277 2022-04-07 op block.
513 1595c277 2022-04-07 op .It Ic require Ic client Ic ca Ar file
514 1595c277 2022-04-07 op Allow the proxying only from clients that provide a certificate
515 1595c277 2022-04-07 op signed by the CA certificate in
516 1595c277 2022-04-07 op .Ar file .
517 1595c277 2022-04-07 op .It Ic sni Ar hostname
518 1595c277 2022-04-07 op Use the given
519 1595c277 2022-04-07 op .Ar hostname
520 1595c277 2022-04-07 op instead of the one extracted from the
521 1595c277 2022-04-07 op .Ic relay-to
522 1595c277 2022-04-07 op rule for the TLS handshake with the proxied gemini server.
523 1595c277 2022-04-07 op .It Ic use-tls Ar bool
524 1595c277 2022-04-07 op Specify whether to use TLS when connecting to the proxied host.
525 1595c277 2022-04-07 op Enabled by default.
526 1595c277 2022-04-07 op .It Ic verifyname Ar bool
527 1595c277 2022-04-07 op Enable or disable the TLS server name verification.
528 1595c277 2022-04-07 op Enabled by default.
529 1595c277 2022-04-07 op .El
530 1595c277 2022-04-07 op .It Ic root Ar directory
531 1595c277 2022-04-07 op Specify the root directory for this server
532 1595c277 2022-04-07 op .Pq alas the current Dq document root .
533 1595c277 2022-04-07 op It's relative to the chroot if enabled.
534 1595c277 2022-04-07 op .It Ic require Ic client Ic ca Ar path
535 1595c277 2022-04-07 op Allow requests only from clients that provide a certificate signed by
536 1595c277 2022-04-07 op the CA certificate in
537 1595c277 2022-04-07 op .Ar path .
538 1595c277 2022-04-07 op It needs to be a PEM-encoded certificate and it's not relative to the
539 1595c277 2022-04-07 op chroot.
540 1595c277 2022-04-07 op .It Ic strip Ar number
541 1595c277 2022-04-07 op Strip
542 1595c277 2022-04-07 op .Ar number
543 1595c277 2022-04-07 op components from the beginning of the path before doing a lookup in the
544 1595c277 2022-04-07 op root directory.
545 1595c277 2022-04-07 op It's also considered for the
546 1595c277 2022-04-07 op .Ar meta
547 1595c277 2022-04-07 op parameter in the scope of a
548 1595c277 2022-04-07 op .Ic block return .
549 1595c277 2022-04-07 op .El
550 1595c277 2022-04-07 op .Ss Types
551 1595c277 2022-04-07 op The
552 1595c277 2022-04-07 op .Ic types
553 1595c277 2022-04-07 op section must include one or more lines of the following syntax, enclosed
554 1595c277 2022-04-07 op in curly brances:
555 1595c277 2022-04-07 op .Bl -tag -width Ds
556 7edcf2b3 2023-06-24 op .It Ar type Ns / Ns Ar subtype Ar name Op Ar name ...
557 1595c277 2022-04-07 op Set the media
558 1595c277 2022-04-07 op .Ar type
559 1595c277 2022-04-07 op and
560 1595c277 2022-04-07 op .Ar subtype
561 1595c277 2022-04-07 op to the specified extension
562 1595c277 2022-04-07 op .Ar name .
563 1595c277 2022-04-07 op One or more names can be specified per line.
564 1595c277 2022-04-07 op Earch line may end with an optional semicolon.
565 1595c277 2022-04-07 op .It Ic include Ar file
566 1595c277 2022-04-07 op Include types definition from an external file, for example
567 1595c277 2022-04-07 op .Pa /usr/share/misc/mime.types .
568 1595c277 2022-04-07 op .El
569 1595c277 2022-04-07 op .Pp
570 1595c277 2022-04-07 op By default
571 1595c277 2022-04-07 op .Nm gmid
572 5f03bf17 2022-04-08 op uses the following mapping if no
573 5f03bf17 2022-04-08 op .Ic types
574 93cab6dc 2022-04-08 op block is defined:
575 7edcf2b3 2023-06-24 op .Pp
576 1595c277 2022-04-07 op .Bl -tag -offset indent -width 15m -compact
577 1595c277 2022-04-07 op .It application/pdf
578 1595c277 2022-04-07 op pdf
579 1595c277 2022-04-07 op .It image/gif
580 1595c277 2022-04-07 op gif
581 1595c277 2022-04-07 op .It image/jpeg
582 aa6b8cf8 2022-04-08 op jpg jpeg
583 1595c277 2022-04-07 op .It image/png
584 1595c277 2022-04-07 op png
585 1595c277 2022-04-07 op .It image/svg+xml
586 1595c277 2022-04-07 op svg
587 1595c277 2022-04-07 op .It text/gemini
588 1595c277 2022-04-07 op gemini gmi
589 1595c277 2022-04-07 op .It text/markdown
590 1595c277 2022-04-07 op markdown md
591 1595c277 2022-04-07 op .It text/x-patch
592 1595c277 2022-04-07 op diff patch
593 1595c277 2022-04-07 op .It text/xml
594 1595c277 2022-04-07 op xml
595 1595c277 2022-04-07 op .El
596 93cab6dc 2022-04-08 op .Pp
597 93cab6dc 2022-04-08 op As an exception,
598 93cab6dc 2022-04-08 op .Nm gmid
599 93cab6dc 2022-04-08 op uses the MIME type
600 93cab6dc 2022-04-08 op .Ar text/gemini
601 93cab6dc 2022-04-08 op for file extensions
602 93cab6dc 2022-04-08 op .Ar gemini
603 93cab6dc 2022-04-08 op or
604 93cab6dc 2022-04-08 op .Ar gmi
605 93cab6dc 2022-04-08 op if no mapping was found.
606 1595c277 2022-04-07 op .Sh EXAMPLES
607 1595c277 2022-04-07 op The following is an example of a possible configuration for a site
608 1595c277 2022-04-07 op that enables only TLSv1.3, adds the MIME types mapping from
609 1595c277 2022-04-07 op .Pa /usr/share/misc/mime.types
610 1595c277 2022-04-07 op and defines two virtual host:
611 1595c277 2022-04-07 op .Bd -literal -offset indent
612 1595c277 2022-04-07 op protocols "tlsv1.3"
613 1595c277 2022-04-07 op
614 1595c277 2022-04-07 op types {
615 1595c277 2022-04-07 op include "/usr/share/misc/mime.types"
616 1595c277 2022-04-07 op }
617 1595c277 2022-04-07 op
618 1595c277 2022-04-07 op server "example.com" {
619 7edcf2b3 2023-06-24 op listen on * port 1965
620 1595c277 2022-04-07 op cert "/etc/ssl/example.com.pem"
621 1595c277 2022-04-07 op key "/etc/ssl/private/example.com.key"
622 1595c277 2022-04-07 op root "/var/gemini/example.com"
623 1595c277 2022-04-07 op }
624 1595c277 2022-04-07 op
625 1595c277 2022-04-07 op server "example.it" {
626 7edcf2b3 2023-06-24 op listen on * port 1965
627 1595c277 2022-04-07 op cert "/etc/ssl/example.it.pem"
628 1595c277 2022-04-07 op key "/etc/ssl/private/example.it.key"
629 1595c277 2022-04-07 op root "/var/gemini/example.it"
630 1595c277 2022-04-07 op
631 1595c277 2022-04-07 op # set the language for text/gemini files
632 1595c277 2022-04-07 op lang "it"
633 1595c277 2022-04-07 op }
634 1595c277 2022-04-07 op .Ed
635 1595c277 2022-04-07 op .Pp
636 1595c277 2022-04-07 op Yet another example, showing how to enable a
637 1595c277 2022-04-07 op .Ic chroot
638 1595c277 2022-04-07 op and use
639 1595c277 2022-04-07 op .Ic location
640 1595c277 2022-04-07 op rule
641 1595c277 2022-04-07 op .Bd -literal -offset indent
642 1595c277 2022-04-07 op chroot "/var/gemini"
643 1595c277 2022-04-07 op user "_gmid"
644 1595c277 2022-04-07 op
645 1595c277 2022-04-07 op server "example.com" {
646 7edcf2b3 2023-06-24 op listen on * port 1965
647 7edcf2b3 2023-06-24 op
648 1595c277 2022-04-07 op # absolute paths:
649 1595c277 2022-04-07 op cert "/etc/ssl/example.com.pem"
650 1595c277 2022-04-07 op key "/etc/ssl/private/example.com.key"
651 1595c277 2022-04-07 op
652 1595c277 2022-04-07 op # relative to the chroot:
653 1595c277 2022-04-07 op root "/example.com"
654 1595c277 2022-04-07 op
655 1595c277 2022-04-07 op location "/static/*" {
656 1595c277 2022-04-07 op # load the following rules only for
657 1595c277 2022-04-07 op # requests that matches "/static/*"
658 1595c277 2022-04-07 op
659 1595c277 2022-04-07 op auto index on
660 1595c277 2022-04-07 op index "index.gemini"
661 161651fa 2023-08-03 op }
662 161651fa 2023-08-03 op }
663 161651fa 2023-08-03 op .Ed
664 161651fa 2023-08-03 op .Pp
665 161651fa 2023-08-03 op This shows how to set up a reverse proxy: all request for
666 161651fa 2023-08-03 op .Sq example.com
667 161651fa 2023-08-03 op will be forwarded to 10.0.0.6 transparently.
668 161651fa 2023-08-03 op Proxying establish a new TLS connection, so any client-certificates used
669 161651fa 2023-08-03 op to connect to
670 161651fa 2023-08-03 op .Xr gmid 8
671 161651fa 2023-08-03 op cannot be provided to the proxied server as well.
672 161651fa 2023-08-03 op .Bd -literal -offset indent
673 161651fa 2023-08-03 op server "example.com" {
674 161651fa 2023-08-03 op listen on * port 1965
675 161651fa 2023-08-03 op cert "/etc/ssl/example.com.pem"
676 161651fa 2023-08-03 op key "/etc/ssl/private/example.com.key"
677 161651fa 2023-08-03 op proxy {
678 161651fa 2023-08-03 op relay-to 10.0.0.6 port 1965
679 1595c277 2022-04-07 op }
680 1595c277 2022-04-07 op }
681 1595c277 2022-04-07 op .Ed
682 1595c277 2022-04-07 op .Sh SEE ALSO
683 9b15e4c6 2022-09-08 op .Xr gmid 8 ,
684 1595c277 2022-04-07 op .Xr slowcgi 8
685 1595c277 2022-04-07 op .Sh AUTHORS
686 1595c277 2022-04-07 op .An -nosplit
687 1595c277 2022-04-07 op The
688 1595c277 2022-04-07 op .Nm gmid
689 1595c277 2022-04-07 op program was written by
690 1595c277 2022-04-07 op .An Omar Polo Aq Mt op@omarpolo.com .