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GMID(1) General Commands Manual GMID(1)
NAME
gmid simple and secure Gemini server
SYNOPSIS
gmid [-fnv] [-c config] [-D macro=value] [-P pidfile]
gmid [-6hVv] [-d certs-dir] [-H hostname] [-p port] [-x cgi]
[dir]
DESCRIPTION
gmid is a simple and minimal gemini server that can serve
static files, execute CGI scripts and talk to FastCGI
applications. It can run without a configuration file with
a limited set of features available.
gmid rereads the configuration file when it receives SIGHUP.
The options are as follows:
-c config Specify the configuration file.
-D macro=value Define macro to be set to value on the
command line. Overrides the definition of
macro in the config file if present.
-f Stays and logs on the foreground.
-n Check that the configuration is valid, but
don't start the server. If specified two or
more time, dump the configuration in
addition to verify it.
-P pidfile Write daemon's pid to the given location.
pidfile will also act as lock: if another
process is holding a lock on that file, gmid
will refuse to start.
If no configuration file is given, gmid runs in config-less
mode (i.e. runs in the foreground to serve a directory from
the shell) and looks for the following options
-6 Enable IPv6.
-d certs-path Directory where certificates for the config-
less mode are stored. By default it is
$XDG_DATA_HOME/gmid, i.e.
~/.local/share/gmid.
-H hostname The hostname (localhost by default).
Certificates for the given hostname are
searched inside the certs-dir directory
given with the -d option. They have the
form hostname.cert.pem and hostname.key.pem.
If a certificate or a key doesn't exist for
a given hostname, they will be generated
automatically.
-h, --help Print the usage and exit.
-p port The port to listen on, by default 1965.
-V, --version Print the version and exit.
-v Verbose mode. Multiple -v options increase
the verbosity.
-x path Enable execution of CGI scripts. See the
description of the cgi option in the
Servers section below to learn how path is
processed. Cannot be provided more than
once.
dir The root directory to serve. By default the
current working directory is assumed.
LOGGING
Messages and requests are logged by syslog(3) using the
DAEMON facility or printed on stderr.
Requests are logged with the NOTICE severity. Each request
log entry has the following fields, separated by whitespace:
Client IP address and the source port number, separated
by a colon
GET keyword
Request URL
Response status
Response meta
EXAMPLES
Serve the current directory
$ gmid .
To serve the directory docs and enable CGI scripts inside
docs/cgi
$ mkdir docs/cgi
$ cat <<EOF > docs/cgi/hello
#!/bin/sh
printf "20 text/plain\r\n"
echo "hello world"
EOF
$ chmod +x docs/cgi/hello
$ gmid -x '/cgi/*' docs
To run gmid as a deamon a configuration file and a X.509
certificate must be provided. A self-signed certificate,
which are commonly used in the Geminispace, can be generated
using for e.g. openssl(1):
# openssl req -x509 -newkey rsa:4096 -nodes \
-keyout /etc/ssl/private/example.com.key \
-out /etc/ssl/example.com.pem \
-days 365 -subj "/CN=example.com"
# chmod 600 /etc/ssl/example.com.crt
# chmod 600 /etc/ssl/private/example.com.key
Then gmid can be started with
# gmid -c /etc/gmid.conf
SEE ALSO
gmid.conf(5)
ACKNOWLEDGEMENTS
gmid uses the Flexible and Economical UTF-8 decoder
written by Bjoern Hoehrmann.
AUTHORS
The gmid program was written by Omar Polo <op@omarpolo.com>.
CAVEATS
All the root directories are opened during the daemon
startup; if a root directory is deleted and then re-
created, gmid won't be able to serve files inside that
directory until a restart. This restriction only
applies to the root directories and not their content.
a %2F sequence is indistinguishable from a literal
slash: this is not RFC3986-compliant.
a %00 sequence is treated as invalid character and thus
rejected.
OpenBSD 7.2 April 7, 2022 OpenBSD 7.2