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[client] config: optionally load config from XDG_CONFIG_HOME

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We look for the client config in $XDG_CONFIG_HOME/looking-glass/client.ini.
This is done because it's more conventional, and also allows us to add
additional configuration files, e.g. for the host.

We fallback to $HOME/.config as is standard, and then as a last resort use
getpwuid(getuid())->pw_dir. This is also recommended by the getpwuid manpage:

> An application that wants to determine its user's home directory should
> inspect the value of HOME (rather than the value getpwuid(getuid())->pw_dir)
> since this allows the user to modify their notion of "the home directory"
> during a login session.
This commit is contained in:
Quantum 2021-07-30 17:38:19 -04:00 committed by Geoffrey McRae
parent 68d8d95266
commit 75e57baf6c
1 changed files with 23 additions and 1 deletions
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24
client/src/config.c
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@ -480,7 +480,7 @@ bool config_load(int argc, char * argv[])
return false;
}
// load user's local options
// load config from user's home directory
struct passwd * pw = getpwuid(getuid());
char * localFile;
alloc_sprintf(&localFile, "%s/.looking-glass-client.ini", pw->pw_dir);
@ -495,6 +495,28 @@ bool config_load(int argc, char * argv[])
}
free(localFile);
// load config from XDG_CONFIG_HOME
char * xdgFile;
char * dir;
if ((dir = getenv("XDG_CONFIG_HOME")) != NULL)
alloc_sprintf(&xdgFile, "%s/looking-glass/client.ini", dir);
else if ((dir = getenv("HOME")) != NULL)
alloc_sprintf(&xdgFile, "%s/.config/looking-glass/client.ini", dir);
else
alloc_sprintf(&xdgFile, "%s/.config/looking-glass/client.ini", pw->pw_dir);
if (xdgFile && stat(xdgFile, &st) >= 0 && S_ISREG(st.st_mode))
{
DEBUG_INFO("Loading config from: %s", xdgFile);
if (!option_load(xdgFile))
{
free(xdgFile);
return false;
}
}
free(xdgFile);
// parse the command line arguments
if (!option_parse(argc, argv))
return false;