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/* |
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* ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd). |
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* dynlink.c: A module loader. |
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* |
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* Copyright (C) 2002 by the past and present ircd coders, and others. |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU General Public License as published by |
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* the Free Software Foundation; either version 2 of the License, or |
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* (at your option) any later version. |
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* |
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* This program is distributed in the hope that it will be useful, |
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* but WITHOUT ANY WARRANTY; without even the implied warranty of |
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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* GNU General Public License for more details. |
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* |
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* You should have received a copy of the GNU General Public License |
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* along with this program; if not, write to the Free Software |
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 |
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* USA |
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* |
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* $Id$ |
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* |
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*/ |
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|
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#include "ltdl.h" |
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|
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#include "stdinc.h" |
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#include "list.h" |
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#include "irc_string.h" |
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#include "modules.h" |
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#include "s_log.h" |
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#include "client.h" |
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#include "send.h" |
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|
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|
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static const char *unknown_ver = "<unknown>"; |
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|
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/* This file contains the core functions to use dynamic libraries. |
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* -TimeMr14C |
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*/ |
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|
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void |
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dynlink_init(void) |
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{ |
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if (lt_dlinit()) |
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{ |
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ilog(L_ERROR, "Couldn't initialize the libltdl run time dynamic" |
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" link library. Exiting."); |
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exit(0); |
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} |
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} |
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|
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int |
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modules_valid_suffix(const char *name) |
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{ |
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return ((name = strrchr(name, '.'))) && !strcmp(name, ".la"); |
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} |
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|
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/* unload_one_module() |
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* |
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* inputs - name of module to unload |
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* - 1 to say modules unloaded, 0 to not |
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* output - 0 if successful, -1 if error |
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* side effects - module is unloaded |
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*/ |
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int |
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unload_one_module(const char *name, int warn) |
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{ |
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struct module *modp = NULL; |
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|
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if ((modp = findmodule_byname(name)) == NULL) |
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return -1; |
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|
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if (modp->modexit) |
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modp->modexit(); |
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|
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assert(dlink_list_length(&mod_list) > 0); |
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dlinkDelete(&modp->node, &mod_list); |
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MyFree(modp->name); |
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|
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lt_dlclose(modp->handle); |
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|
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if (warn == 1) |
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{ |
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ilog(L_INFO, "Module %s unloaded", name); |
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sendto_realops_flags(UMODE_ALL, L_ALL, "Module %s unloaded", name); |
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} |
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|
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return 0; |
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} |
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|
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/* load_a_module() |
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* |
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* inputs - path name of module, int to notice, int of core |
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* output - -1 if error 0 if success |
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* side effects - loads a module if successful |
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*/ |
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int |
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load_a_module(const char *path, int warn, int core) |
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{ |
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lt_dlhandle tmpptr = NULL; |
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const char *mod_basename = NULL; |
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struct module *modp = NULL; |
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|
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if (findmodule_byname((mod_basename = libio_basename(path)))) |
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return 1; |
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|
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if (!(tmpptr = lt_dlopen(path))) { |
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const char *err = ((err = lt_dlerror())) ? err : "<unknown>"; |
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|
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sendto_realops_flags(UMODE_ALL, L_ALL, "Error loading module %s: %s", |
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mod_basename, err); |
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ilog(L_WARN, "Error loading module %s: %s", mod_basename, err); |
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return -1; |
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} |
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|
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if ((modp = lt_dlsym(tmpptr, "module_entry")) == NULL) |
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{ |
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sendto_realops_flags(UMODE_ALL, L_ALL, "Module %s has no module_entry export", |
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mod_basename); |
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ilog(L_WARN, "Module %s has no module_entry export", mod_basename); |
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lt_dlclose(tmpptr); |
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return -1; |
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} |
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|
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modp->handle = tmpptr; |
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|
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if (EmptyString(modp->version)) |
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modp->version = unknown_ver; |
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|
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if (core) |
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modp->flags |= MODULE_FLAG_CORE; |
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|
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DupString(modp->name, mod_basename); |
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dlinkAdd(modp, &modp->node, &mod_list); |
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|
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if (modp->modinit) |
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modp->modinit(); |
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|
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if (warn == 1) |
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{ |
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sendto_realops_flags(UMODE_ALL, L_ALL, |
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"Module %s [version: %s handle: %p] loaded.", |
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modp->name, modp->version, tmpptr); |
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ilog(L_WARN, "Module %s [version: %s handle: %p] loaded.", |
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modp->name, modp->version, tmpptr); |
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} |
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|
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return 0; |
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} |
