78946542bb
There's no reason to really have these in the main ircd anymore, static modules are dead and aren't coming back. To ensure people don't do something hopelessly retarded, this is a core module.
404 lines
11 KiB
C
404 lines
11 KiB
C
/* modules/m_modules.c - module for module loading
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* Copyright (c) 2016 Elizabeth Myers <elizabeth@interlinked.me>
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*
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* Permission to use, copy, modify, and/or distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice is present in all copies.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "stdinc.h"
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#include "client.h"
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#include "parse.h"
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#include "msg.h"
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#include "modules.h"
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#include "s_newconf.h"
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#include "s_conf.h"
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#include "s_serv.h"
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#include "hash.h"
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#include "ircd.h"
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#include "match.h"
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#include "numeric.h"
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#include "send.h"
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#include "packet.h"
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#include "logger.h"
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static const char modules_desc[] = "Provides module management commands";
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static void mo_modload(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
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static void mo_modlist(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
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static void mo_modreload(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
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static void mo_modunload(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
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static void mo_modrestart(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
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static void me_modload(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
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static void me_modlist(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
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static void me_modreload(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
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static void me_modunload(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
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static void me_modrestart(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
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static void do_modload(struct Client *, const char *);
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static void do_modunload(struct Client *, const char *);
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static void do_modreload(struct Client *, const char *);
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static void do_modlist(struct Client *, const char *);
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static void do_modrestart(struct Client *);
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struct Message modload_msgtab = {
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"MODLOAD", 0, 0, 0, 0,
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{mg_unreg, mg_not_oper, mg_ignore, mg_ignore, {me_modload, 2}, {mo_modload, 2}}
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};
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struct Message modunload_msgtab = {
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"MODUNLOAD", 0, 0, 0, 0,
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{mg_unreg, mg_not_oper, mg_ignore, mg_ignore, {me_modunload, 2}, {mo_modunload, 2}}
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};
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struct Message modreload_msgtab = {
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"MODRELOAD", 0, 0, 0, 0,
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{mg_unreg, mg_not_oper, mg_ignore, mg_ignore, {me_modreload, 2}, {mo_modreload, 2}}
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};
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struct Message modlist_msgtab = {
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"MODLIST", 0, 0, 0, 0,
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{mg_unreg, mg_not_oper, mg_ignore, mg_ignore, {me_modlist, 0}, {mo_modlist, 0}}
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};
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struct Message modrestart_msgtab = {
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"MODRESTART", 0, 0, 0, 0,
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{mg_unreg, mg_not_oper, mg_ignore, mg_ignore, {me_modrestart, 0}, {mo_modrestart, 0}}
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};
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mapi_clist_av1 modules_clist[] = { &modload_msgtab, &modunload_msgtab, &modreload_msgtab, &modlist_msgtab, &modrestart_msgtab, NULL };
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DECLARE_MODULE_AV2(modules, NULL, NULL, modules_clist, NULL, NULL, NULL, NULL, modules_desc);
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/* load a module .. */
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static void
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mo_modload(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char **parv)
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{
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if(!IsOperAdmin(source_p))
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{
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sendto_one(source_p, form_str(ERR_NOPRIVS),
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me.name, source_p->name, "admin");
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return;
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}
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if(parc > 2)
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{
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sendto_match_servs(source_p, parv[2], CAP_ENCAP, NOCAPS,
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"ENCAP %s MODLOAD %s", parv[2], parv[1]);
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if(match(parv[2], me.name) == 0)
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return;
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}
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do_modload(source_p, parv[1]);
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}
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static void
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me_modload(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char **parv)
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{
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if(!find_shared_conf(source_p->username, source_p->host, source_p->servptr->name, SHARED_MODULE))
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{
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sendto_one_notice(source_p, ":*** You do not have an appropriate shared block "
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"to load modules on this server.");
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return;
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}
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do_modload(source_p, parv[1]);
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}
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/* unload a module .. */
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static void
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mo_modunload(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char **parv)
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{
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if(!IsOperAdmin(source_p))
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{
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sendto_one(source_p, form_str(ERR_NOPRIVS),
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me.name, source_p->name, "admin");
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return;
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}
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if(parc > 2)
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{
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sendto_match_servs(source_p, parv[2], CAP_ENCAP, NOCAPS,
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"ENCAP %s MODUNLOAD %s", parv[2], parv[1]);
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if(match(parv[2], me.name) == 0)
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return;
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}
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do_modunload(source_p, parv[1]);
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}
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static void
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me_modunload(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char **parv)
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{
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if(!find_shared_conf(source_p->username, source_p->host, source_p->servptr->name, SHARED_MODULE))
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{
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sendto_one_notice(source_p, ":*** You do not have an appropriate shared block "
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"to load modules on this server.");
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return;
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}
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do_modunload(source_p, parv[1]);
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}
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/* unload and load in one! */
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static void
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mo_modreload(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char **parv)
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{
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if(!IsOperAdmin(source_p))
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{
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sendto_one(source_p, form_str(ERR_NOPRIVS),
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me.name, source_p->name, "admin");
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return;
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}
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if(parc > 2)
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{
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sendto_match_servs(source_p, parv[2], CAP_ENCAP, NOCAPS,
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"ENCAP %s MODRELOAD %s", parv[2], parv[1]);
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if(match(parv[2], me.name) == 0)
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return;
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}
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do_modreload(source_p, parv[1]);
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}
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static void
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me_modreload(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char **parv)
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{
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if(!find_shared_conf(source_p->username, source_p->host, source_p->servptr->name, SHARED_MODULE))
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{
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sendto_one_notice(source_p, ":*** You do not have an appropriate shared block "
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"to load modules on this server.");
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return;
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}
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do_modreload(source_p, parv[1]);
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}
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/* list modules .. */
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static void
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mo_modlist(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char **parv)
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{
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if(!IsOperAdmin(source_p))
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{
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sendto_one(source_p, form_str(ERR_NOPRIVS),
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me.name, source_p->name, "admin");
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return;
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}
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if(parc > 2)
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{
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sendto_match_servs(source_p, parv[2], CAP_ENCAP, NOCAPS,
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"ENCAP %s MODLIST %s", parv[2], parv[1]);
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if(match(parv[2], me.name) == 0)
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return;
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}
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do_modlist(source_p, parc > 1 ? parv[1] : 0);
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}
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static void
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me_modlist(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char **parv)
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{
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if(!find_shared_conf(source_p->username, source_p->host, source_p->servptr->name, SHARED_MODULE))
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{
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sendto_one_notice(source_p, ":*** You do not have an appropriate shared block "
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"to load modules on this server.");
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return;
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}
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do_modlist(source_p, parv[1]);
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}
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/* unload and reload all modules */
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static void
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mo_modrestart(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char **parv)
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{
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if(!IsOperAdmin(source_p))
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{
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sendto_one(source_p, form_str(ERR_NOPRIVS),
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me.name, source_p->name, "admin");
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return;
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}
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if(parc > 1)
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{
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sendto_match_servs(source_p, parv[1], CAP_ENCAP, NOCAPS,
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"ENCAP %s MODRESTART", parv[1]);
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if(match(parv[1], me.name) == 0)
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return;
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}
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do_modrestart(source_p);
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}
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static void
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me_modrestart(struct MsgBuf *msgbuf_p, struct Client *client_p, struct Client *source_p, int parc, const char **parv)
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{
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if(!find_shared_conf(source_p->username, source_p->host, source_p->servptr->name, SHARED_MODULE))
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{
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sendto_one_notice(source_p, ":*** You do not have an appropriate shared block "
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"to load modules on this server.");
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return;
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}
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do_modrestart(source_p);
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}
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static void
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do_modload(struct Client *source_p, const char *module)
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{
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char *m_bn = rb_basename(module);
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int origin;
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if(findmodule_byname(m_bn) != -1)
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{
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sendto_one_notice(source_p, ":Module %s is already loaded", m_bn);
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rb_free(m_bn);
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return;
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}
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origin = strcmp(module, m_bn) == 0 ? MAPI_ORIGIN_CORE : MAPI_ORIGIN_EXTENSION;
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load_one_module(module, origin, false);
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rb_free(m_bn);
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}
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static void
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do_modunload(struct Client *source_p, const char *module)
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{
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int modindex;
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char *m_bn = rb_basename(module);
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if((modindex = findmodule_byname(m_bn)) == -1)
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{
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sendto_one_notice(source_p, ":Module %s is not loaded", m_bn);
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rb_free(m_bn);
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return;
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}
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if(modlist[modindex]->core)
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{
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sendto_one_notice(source_p, ":Module %s is a core module and may not be unloaded", m_bn);
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rb_free(m_bn);
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return;
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}
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if(unload_one_module(m_bn, true) == false)
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sendto_one_notice(source_p, ":Module %s is not loaded", m_bn);
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rb_free(m_bn);
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}
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static void
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do_modreload(struct Client *source_p, const char *module)
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{
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int modindex;
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int check_core;
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char *m_bn = rb_basename(module);
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if((modindex = findmodule_byname(m_bn)) == -1)
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{
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sendto_one_notice(source_p, ":Module %s is not loaded", m_bn);
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rb_free(m_bn);
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return;
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}
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check_core = modlist[modindex]->core;
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if(unload_one_module(m_bn, true) == false)
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{
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sendto_one_notice(source_p, ":Module %s is not loaded", m_bn);
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rb_free(m_bn);
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return;
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}
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if((load_one_module(m_bn, modlist[modindex]->origin, check_core) == false) && check_core)
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{
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sendto_realops_snomask(SNO_GENERAL, L_NETWIDE,
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"Error reloading core module: %s: terminating ircd", m_bn);
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ilog(L_MAIN, "Error loading core module %s: terminating ircd", m_bn);
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exit(0);
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}
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rb_free(m_bn);
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}
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static void
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do_modrestart(struct Client *source_p)
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{
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int modnum;
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sendto_one_notice(source_p, ":Reloading all modules");
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modnum = num_mods;
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while (num_mods)
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unload_one_module(modlist[0]->name, false);
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load_all_modules(false);
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load_core_modules(false);
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rehash(false);
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sendto_realops_snomask(SNO_GENERAL, L_NETWIDE,
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"Module Restart: %d modules unloaded, %d modules loaded",
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modnum, num_mods);
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ilog(L_MAIN, "Module Restart: %d modules unloaded, %d modules loaded", modnum, num_mods);
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}
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static void
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do_modlist(struct Client *source_p, const char *pattern)
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{
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int i;
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for (i = 0; i < num_mods; i++)
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{
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const char *origin;
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switch (modlist[i]->origin)
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{
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case MAPI_ORIGIN_EXTENSION:
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origin = "extension";
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break;
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case MAPI_ORIGIN_CORE:
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origin = "builtin";
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break;
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default:
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origin = "unknown";
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break;
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}
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if(pattern)
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{
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if(match(pattern, modlist[i]->name))
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{
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sendto_one(source_p, form_str(RPL_MODLIST),
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me.name, source_p->name,
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modlist[i]->name,
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(unsigned long)(uintptr_t)modlist[i]->address, origin,
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modlist[i]->core ? " (core)" : "", modlist[i]->version, modlist[i]->description);
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}
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}
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else
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{
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sendto_one(source_p, form_str(RPL_MODLIST),
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me.name, source_p->name, modlist[i]->name,
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(unsigned long)(uintptr_t)modlist[i]->address, origin,
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modlist[i]->core ? " (core)" : "", modlist[i]->version, modlist[i]->description);
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}
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}
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sendto_one(source_p, form_str(RPL_ENDOFMODLIST), me.name, source_p->name);
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}
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