# Using Metamod

## Client Commands

Similar to the server console interface, clients can also issue commands to Metamod, of the following form:

- `meta version` - displays version information about the Metamod instance currently running on the server, ie:

  `Metamod v1.21p38 2018/02/11 (5:13)
  by Will Day
  http://www.metamod.org/
  Patch: Metamod-P (mm-p) v38
  by Jussi Kivilinna
  http://koti.mbnet.fi/axh/
  compiled: Feb 11 2017, xx:xx:xx EET (optimized)`

- `meta list` - displays information about the list of currently running plugins, ie:

  `Currently running plugins:
  [ 1] Trace HLSDK API, v1.XX.93, 2003/02/17, by Will Day <willday@metamod.org>, see http://www.metamod.org/
  [ 2] Adminmod, v2.50.56 (MM), Jul 13 2003, by Alfred Reynolds <alfred@valvesoftware.com>, see http://www.adminmod.org/
  2 plugins`

## Client Cvars

Also available to client browser applications is a cvar `metamod_version` that should report the version of Metamod running on the server, ie:

  `"metamod_version" is "1.21p38"`

  ## Installation

  If you want to install Metamod by hand, here's what you have to do:

  - Install the Metamod library (.dll for win32, or .so for linux) to a directory under your game directory. For instance, if you were running Counter-Strike, under win32 you might want have:

        	half-life/cstrike/addons/metamod/dlls/metamod.dll

    If a directory you want doesn't exist, create it.

  - Edit the "`liblist.gam`" file in your game directory, replacing the game dll filename with the Metamod dll filename. For instance with Counter-Strike, you would change:

    `
      gamedll "dlls/mp.dll"
      gamedll_linux "dlls/cs.so"
    `
    to:
    `
      gamedll "addons/metamod/dlls/metamod.dll"
      gamedll_linux "addons/metamod/dlls/metamod.so"
    `

    Note that it's only really necessary to change the line corresponding to your OS (win32 or linux); you can leave the other line unchanged, or you can change it - it doesn't matter.

  - To load plugins at game startup, you'll need to create a "plugins.ini" file containing a list of the plugins you want to load.

  ## Configuration

  Metamod has several ways to provide config options, partially because it started with one method and then added other methods, but also because one method can be more convenient than the other, varying with the situation.

  Generally speaking, the two methods of providing configuration information to Metamod are:

  - on the command line, via +localinfo arguments to hlds.
  - as the contents of some file that Metamod reads and parses.

  The confusing part can come when the pathnames to some of the config files can be specified via command line options - or indeed, when the pathnames to some config files can be specified in other config files.

  In any case, here are the various config options and config files Metamod uses, (listed in order of priority), where "`$gamedir`" indicates the game directory, ie "cstrike":

  - `+localinfo mm_configfile` <file>

  - `+localinfo mm_pluginsfile` <file>
  - `config.ini option: plugins_file` <file>
  - `$gamedir/addons/metamod/plugins.ini`
  - `$gamedir/metamod.ini`

  - `$localinfo mm_execcfg` <file>
  - `config.ini option: exec_cfg` <file>
  - `$gamedir/addons/metamod/exec.cfg`
  - `$gamedir/metaexec.cfg`

  - `$localinfo mm_gamedll` <file>
  - `config.ini option: gamedll` <file>
  - `$gamedir/metagame.ini` -- No longer supported.

  ## File: `plugins.ini`

  Default location: $gamedir/addons/metamod/plugins.ini, ie "cstrike/addons/metamod/plugins.ini".

  Plugins are described in a file "plugins.ini" and each line describes a plugin to load:

    <platform> <filepath> [<description>]

  Fields are whitespace delimited (tabs/spaces).

  - Platform is a keyword, either `"linux"` or `"win32"`.

  - Filepath is a path to the DLL/so file. Relative paths are from the game dir; absolute paths are also valid. Paths should use unix-style forward slashes (/) and not backward slashes (\), even on windows platforms.

    Also, the filepath (once expanded to full path name) is expected to be unique within the list of plugins. Thus, a plugin with a fullpathname matching that of a previous plugin is considered a duplicate, and is not loaded.

  - Description is an optional description of the plugin, used in place of the plugin's internal name in log messages and console output. Whitespace in the description is allowed; quoting is unnecessary.
  Comments are recognized at only the beginning of a line, and can be in either shell style ("`#`") or c++ style ("`//`").

  For instance, in `"cstrike/addons/metamod/plugins.ini"` these are all valid lines:

          // linux    dlls/mybot.so
          # win32     dlls/mybot-old.dll         Mybot old
          win32       dlls/mybot.dll             Mybot current
          linux       /tmp/stub_mm_i386.so
          win32       /tmp/stub_mm_i386.dll
          linux       ../dlls/trace_mm_i386.so
          win32       ../dlls/trace_mm_i386.dll
          linux       dlls/admin_MM_i386.so
          win32       dlls/admin_MM_i386.dll

  Note that order in the plugins.ini file is significant. Plugins are loaded and accessed in the order specified, so ordering can be important, depending on the plugin(s).

  The file is re-read at changelevel, as well as on demand (via `"meta refresh"` console command; see below). When the file is re-read, it will:

  - load any new plugins added to the file
  - unload any plugins that have been deleted from the file. This is only applicable to plugins loaded from the inifile. If the plugin was loaded from the console, it will not be unloaded during a refresh, whether it's in the inifile or not.
  - reload any plugin whose file on disk has been updated since it was loaded. Note this appears to be only useful under linux, as under Windows you cannot rename or overwrite an open DLL, so it doesn't look a loaded plugin could ever have a newer file on disk. Oh well.

  The game dll is auto-detected, along the same lines AdminMod operated (looking at the "gamedir"); see "mm_gamedll" below if you want to use a "bot" DLL.

  You can override the name of this file by specifying it via the +localinfo field "mm_pluginsfile".

  For compatibility with previous versions, Metamod will also look for a file "metamod.ini" under the gamedir, ie "cstrike/metamod.ini".

  ## File: `config.ini`

  Default location: $gamedir/addons/metamod/config.ini, ie "cstrike/addons/metamod/config.ini".

  This contains basic config information, at the moment duplicating most of the +localinfo variables, but allowing for more flexible expansion of config options in the future. Also, it provides somewhat more reliable options setting, since +localinfo munges some argument values (in particular, pathnames with leading dots, ie "../dlls/blah.dll").

  Basic format is:

    <option> <value>

  Fields are whitespace delimited (tabs/spaces). Comments are recognized at only the beginning of a line, and can be in either shell style ("`#`") or c++ style ("`//`"). The following is a list of currently recognized options, their defaults, and examples of usage:

  - `debuglevel <number>`

    where <number> is an integer, 0 and up.
    Sets the initial debugging level for metamod (same as cvar "meta_debug").
    Default is normally 0. If hlds is run with "-dev", default is 3.
    Overridden by: +localinfo mm_debug <number>
    Examples:
    `debuglevel 0`
    `debuglevel 42`

  - `gamedll <path>`

    where <path> is an absolute path, or a path relative to the gamedir.
    Overrides the auto-detected gamedll, in particular for bots.
    Default is empty, with gamedll being auto-recognized based on the gamedir.
    Overridden by: +localinfo mm_gamedll <number>
    Examples:
    `gamedll dlls/hl.dll`
    `gamedll ../podbot/podbot.dll`
    `gamedll /home/bots/dlls/mybot.dll`

  - `plugins_file <path>`

    where <path> is an absolute path, or a path relative to the gamedir.
    Overrides the default filename containing the MM plugins to load.
    Default is "addons/metamod/plugins.ini".
    Overridden by: +localinfo mm_pluginsfile <number>
    Examples:
    `plugins_file cfg/clanmode.ini`
    `plugins_file ../private.ini`
    `plugins_file /home/half-life/testing.ini`

  - `exec_cfg <path>`

    where <path> is a path relative to the gamedir. NOTE! This cannot be an absolute path, as hlds will not "exec" absolute pathnames.
    Overrides the default filename containing hlds commands to run just after loading Metamod.
    Default is "addons/metamod/exec.cfg".
    Overridden by: +localinfo mm_execcfg <number>
    Examples:
    `exec_cfg configs/debugging.cfg`
    `exec_cfg ../clan/match.cfg`

  - `autodetect <yes/no>`

    Setting to disable or enable autodetection of gamedll. Extra feature for Metamod+All-Mod-Support Patch.
    Default is "yes".
    Overridden by: +localinfo mm_autodetect <yes/no>

  - `clientmeta <yes/no>`

    Setting to disable or enable Metamod's client commands, 'meta list' and 'meta version'. Extra setting for Metamod+All-Mod-Support Patch.
    Default is "yes".
    Overridden by: +localinfo mm_clientmeta <yes/no>

  You can override the name of this file by specifying it via the +localinfo field "mm_configfile".

  ## File: `exec.cfg`

  Default location: $gamedir/addons/metamod/exec.cfg, ie "cstrike/addons/metamod/exec.cfg". This is necessary for plugins that need to have settings specified prior to early API routines like ServerActivate, since `autoexec.cfg` is read too early and `server.cfg` is read to late. In particular, I found this necessary for the Trace plugin, in order to trace routines like `RegUserMsg` which are called during ServerActivate.

  You can override the name of this file by specifying it via the +localinfo field "mm_execcfg".

  For compatibility with previous versions, Metamod will also look for a file "metaexec.cfg" under the gamedir, ie "cstrike/metaexec.cfg".

  ## file: `metagame.ini`

  NOTE! This file is no longer supported! -- use instead the +localinfo field "mm_gamedll" or the config.ini option gamedll.

  ## Commandline option: `+localinfo`

  Several of Metamod's configuration options can be specified by the "+localinfo" facility on the hlds command line. This is similar to the "setinfo" console command, where the syntax is:
    `+localinfo <field> <value>`
  Current localinfo fields recognized by Metamod:

  - mm_configfile Specifies the file that lists config options, instead of using the file config.ini. The `<value>` should be the pathname of the config file, either absolute path or path relative to the gamedir.

  - mm_pluginsfile Specifies a file that lists the Metamod plugins to load, instead of using the file plugins.ini. The `<value>` should be the pathname of the plugins file, either absolute path or path relative to the gamedir.

  - mm_execcfg Specifies a file that contains cvar or other configs to be exec'd after loading the plugins, instead of using the file exec.cfg. The `<value>` should be the pathname of the exec file, either absolute path or path relative to the gamedir.

  - mm_autodetect Specifies if 'autodetect of gamedll' should be enabled or disabled. It's enabled by default. This is extra feature of Metamod+All-Mod-Support Patch.

  - mm_clientmeta Specifies if Metamod's client commands should be enabled or disabled. It's enabled by default. This is extra setting of Metamod+All-Mod-Support Patch.

  - mm_gamedll Specifies a game or Bot DLL to be used instead of the normal gameDLL. The `<value>` should be the pathname of the DLL, either absolute path or path relative to the gamedir.

    This replaces using the metagame.ini file. With previous versions of AdminMod (2.10 and earlier), this same functionality was provided by the file "admin.ini".

  - mm_debug Specifies an initial meta_debug value.

  Note that each localinfo field can have only one value. If specified more than once on the command line, only the last one will be recognized. (In particular, trying to use mm_gamedll to load multiple dll-style bots will not work. In a case like that, the multiple dll's must be chained together).

  Some examples are:

      	./hlds_run -game cstrike +localinfo mm_pluginsfile mylist.ini
      	./hlds_run -game cstrike +localinfo mm_execcfg mysettings.cfg
      	./hlds_run -game cstrike +localinfo mm_gamedll dlls/pod_bot.so
      	./hlds_run -game cstrike +localinfo mm_debug 7

  Note, paths should use unix-style forward slashes (/) and not backward slashes (\), even on windows platforms.

  ## Commands

  All console command functionality is provide by a single command "meta", with multiple sub-commands:

         usage: meta <command> [<arguments>]
         valid commands are:
            version                - display Metamod version info
            list                   - list plugins currently loaded
            cmds                   - list console cmds registered by plugins
            cvars                  - list cvars registered by plugins
            refresh                - load/unload any new/deleted/updated plugins
            config                 - show config info loaded from config.ini
            load <name>            - find and load a plugin with the given name
            unload <plugin>        - unload a loaded plugin
            reload <plugin>        - unload a plugin and load it again
            info <plugin>          - show all information about a plugin
            pause <plugin>         - pause a loaded, running plugin
            unpause <plugin>       - unpause a previously paused plugin
            retry <plugin>         - retry a plugin that previously failed its action
            clear <plugin>         - clear a failed plugin from the list
            force_unload <plugin>  - forcibly unload a loaded plugin
            require <plugin>       - exit server if plugin not loaded/running

  where `<plugin>` can be either the plugin index number, or a non-ambiguous prefix string matching description or file.

  Also, a single cvar is available:

         meta_debug       - set debugging level

  For instance with:

        Currently loaded plugins:
              description       stat pend  file               vers    src  load  unlod
         [ 1] Trace HLSDK API   RUN   -    mm_trace_i386.so   v0.90   ini  ANY   Pause
         [ 2] adminmod          RUN   -    admin_MM.so        v2.11   ini  Start Start
         [ 3] stub              RUN   -    mm_stub_i386.so    v0.90   ini  ANY   Pause
        2 plugins, 2 running

  You could then do any of the following to unload the API Trace plugin:

         meta unload 1
         meta unload trace
         meta unload mm_trace

  ## Plugin Loading/Unloading Process

  Through the process of loading and unloading, a plugin can be in one of several different states ('stat' column in the 'meta list' output):
  - `BADFILE` - The plugin file couldn't be found, or it doesn't appear to be a valid Metamod plugin.
  - `OPENED` - The plugin file was found, and is a valid Metamod plugin, and is ready to be loaded.
  - `FAILED` - The plugin file attempted to load or unload, but couldn't complete for some reason.
  - `RUNNING` - The plugin file was loaded and is active and running.
  - `PAUSED` - The plugin file was loaded, but has been temporarily disabled.
  Also through the operation process, a plugin can have a pending "action" to next take (indicated by the 'pend' column in the 'meta list' output), and can be one of:
  - `LOAD` - Open and look at the plugin file.
  - `ATTACH` - Attach the plugin to the running game; ie activate it
  - `UNLOAD` - Remove the plugin from the running game and close the file
  - `RELOAD` - Unload/close and re-open/load the plugin, for instance when the plugin file has changed.

  ## Example Output

  Here's some other example output:

         meta info admin
                  name: adminmod
                  desc: Adminmod
                status: running
                action: none
              filename: dlls/admin_MM.so
                  file: admin_MM.so
              pathname: /home/willday/test/cstrike/dlls/admin_MM.so
                 index: 3
                source: ini file
              loadable: at server startup
            unloadable: at server startup
               version: 2.11
                  date: 2001/02/04
                author: Alfred Reynolds <alfred@mazuma.net.au>
                   url: http://www.adminmod.org/
                logtag: ADMIN
           last loaded: Mon Feb  5 02:06:34 2001
         DLLAPI functions:
            GameDLLInit
            DispatchThink
            ClientConnect
            ClientCommand
            ClientUserInfoChanged
            ServerActivate
         6 functions (dllapi)
         No DLLAPI-Post functions.
         No NEWAPI functions.
         No NEWAPI-Post functions.
         No Engine functions.
         No Engine-Post functions.
         Registered commands:
            admin_command
         1 commands
         Registered cvars:                      float value  string value
            users_file                             0.000000  users.ini
            maps_file                              0.000000  mapvote.txt
            default_access                         1.000000  1
            ips_file                               0.000000  0
            reserve_slots                          1.000000  1
            reserve_slots_msg                      0.000000  0
            admin_debug                            1.000000  1
            password_field                         0.000000  admin_password
            alarm_message                          0.000000  0
            alarm_time                             0.000000  0
            use_regex                              1.000000  1
            models_password_field                  0.000000  0
            models_file                            0.000000  models.ini
            models_kick_msg                        0.000000  Invalid model
            script_file                            0.000000  cstrike/dlls/admin.amx
            help_file                              0.000000  admin_help.txt
            vote_freq                            360.000000  360
            encrypt_password                       1.000000  1
            pretty_say                             1.000000  1
            admin_mod_version                      2.110000  2.11
            reserve_type                           1.000000  1
            map_ratio                             60.000000  60
            kick_ratio                            75.000000  75
            words_file                             0.000000  0
            password_timeout                    1800.000000  1800
            file_access_read                       0.000000  0
            file_access_write                      0.000000  0
            public_slots_free                     20.000000  20.000000
            allow_client_exec                      0.000000  0
            admin_balance_teams                    0.000000  0
         30 cvars

         meta cmds
         Registered plugin commands:
                plugin              command
          [  1] API trace           trace_version
          [  2] API trace           trace
          [  3] API trace           untrace
          [  4] API trace           showtrace
          [  5] Adminmod            admin_command
         5 commands, 5 available

         meta cvars
         Registered plugin cvars:
                plugin      cvar                   float value  string value
          [  1] API trace   trace_debug               3.000000  3.000000
          [  2] API trace   trace_dllapi              8.000000  8
          [  3] API trace   trace_newapi              0.000000  0
          [  4] API trace   trace_engine              8.000000  8
          [  5] Adminmod    users_file                0.000000  users.ini
          [  6] Adminmod    maps_file                 0.000000  mapvote.txt
          [  7] Adminmod    default_access            1.000000  1
          [  8] Adminmod    ips_file                  0.000000  0
          [  9] Adminmod    reserve_slots             1.000000  1
          [ 10] Adminmod    reserve_slots_msg         0.000000  0
          [ 11] Adminmod    admin_debug               1.000000  1
          [ 12] Adminmod    password_field            0.000000  admin_password
          [ 13] Adminmod    alarm_message             0.000000  0
          [ 14] Adminmod    alarm_time                0.000000  0
          [ 15] Adminmod    use_regex                 1.000000  1
          [ 16] Adminmod    models_password_fiel      0.000000  0
          [ 17] Adminmod    models_file               0.000000  models.ini
          [ 18] Adminmod    models_kick_msg           0.000000  Invalid model
          [ 19] Adminmod    script_file               0.000000  cstrike/dlls/admin.amx
          [ 20] Adminmod    help_file                 0.000000  admin_help.txt
          [ 21] Adminmod    vote_freq               360.000000  360
          [ 22] Adminmod    encrypt_password          1.000000  1
          [ 23] Adminmod    pretty_say                1.000000  1
          [ 24] Adminmod    admin_mod_version         2.110000  2.11
          [ 25] Adminmod    reserve_type              1.000000  1
          [ 26] Adminmod    map_ratio                60.000000  60
          [ 27] Adminmod    kick_ratio               75.000000  75
          [ 28] Adminmod    words_file                0.000000  0
          [ 29] Adminmod    password_timeout       1800.000000  1800
          [ 30] Adminmod    file_access_read          0.000000  0
          [ 31] Adminmod    file_access_write         0.000000  0
          [ 32] Adminmod    public_slots_free        20.000000  20.000000
          [ 33] Adminmod    allow_client_exec         0.000000  0
          [ 34] Adminmod    admin_balance_teams       0.000000  0
         34 cvars, 34 available

         meta unload stub
         Unloaded plugin 'Stub plugin'
         Currently loaded plugins:
               description       stat pend  file               vers   src  load  unlod
          [ 1] Trace HLSDK API   RUN   -    mm_trace_i386.so   v0.90  ini  ANY   Pause
          [ 2] adminmod          RUN   -    admin_MM.so        v2.11  ini  Start Start
         2 plugins, 2 running

         meta load stub
         Loaded plugin 'stub' successfully
         Currently loaded plugins:
               description       stat pend  file               vers   src  load  unlod
          [ 1] Trace HLSDK API   RUN   -    mm_trace_i386.so   v0.90  ini  ANY   Pause
          [ 2] adminmod          RUN   -    admin_MM.so        v2.11  ini  Start Start
          [ 3] stub              RUN   -    mm_stub_i386.so    v0.90  cmd  ANY   Pause
         3 plugins, 3 running