mirror of
https://github.com/matrix-construct/construct
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* librb is no longer a separately configured subproject. * charybdis is now a standalone directory with a binary. * Include path layout now requires a directory ircd/ rb/ etc.
417 lines
11 KiB
C
417 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 <ircd/stdinc.h>
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#include <ircd/client.h>
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#include <ircd/parse.h>
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#include <ircd/msg.h>
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#include <ircd/modules.h>
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#include <ircd/s_newconf.h>
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#include <ircd/s_conf.h>
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#include <ircd/s_serv.h>
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#include <ircd/hash.h>
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#include <ircd/ircd.h>
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#include <ircd/match.h>
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#include <ircd/numeric.h>
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#include <ircd/send.h>
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#include <ircd/packet.h>
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#include <ircd/logger.h>
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static const char modules_desc[] = "Provides module management commands";
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static void m_modlist(struct MsgBuf *, struct Client *, struct Client *, int, const char **);
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static void mo_modload(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, {m_modlist, 0}, mg_ignore, mg_ignore, {me_modlist, 0}, {m_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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m_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(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] : NULL);
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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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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) != NULL)
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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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struct module *mod;
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char *m_bn = rb_basename(module);
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if((mod = findmodule_byname(m_bn)) == NULL)
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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(mod->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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struct module *mod;
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int check_core;
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char *m_bn = rb_basename(module);
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if((mod = findmodule_byname(m_bn)) == NULL)
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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 = mod->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, mod->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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unsigned int modnum = 0;
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rb_dlink_node *ptr, *nptr;
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sendto_one_notice(source_p, ":Reloading all modules");
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RB_DLINK_FOREACH_SAFE(ptr, nptr, module_list.head)
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{
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struct module *mod = ptr->data;
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if(!unload_one_module(mod->name, false))
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{
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ilog(L_MAIN, "Module Restart: %s was not unloaded %s",
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mod->name,
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mod->core? "(core module)" : "");
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if(!mod->core)
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sendto_realops_snomask(SNO_GENERAL, L_NETWIDE,
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"Module Restart: %s failed to unload",
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mod->name);
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continue;
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}
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modnum++;
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}
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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: %u modules unloaded, %lu modules loaded",
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modnum, rb_dlink_list_length(&module_list));
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ilog(L_MAIN, "Module Restart: %u modules unloaded, %lu modules loaded", modnum, rb_dlink_list_length(&module_list));
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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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rb_dlink_node *ptr;
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int i;
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RB_DLINK_FOREACH(ptr, module_list.head)
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{
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struct module *mod = ptr->data;
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bool display = false;
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const char *origin;
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switch (mod->origin)
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{
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case MAPI_ORIGIN_EXTENSION:
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origin = "extension";
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display = true;
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break;
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case MAPI_ORIGIN_CORE:
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origin = "builtin";
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display = IsOper(source_p);
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break;
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default:
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origin = "unknown";
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display = IsOper(source_p);
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break;
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}
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if(!display)
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continue;
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if(pattern)
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{
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if(match(pattern, mod->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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mod->name,
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(unsigned long)(uintptr_t)mod->address, origin,
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mod->core ? " (core)" : "", mod->version, mod->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, mod->name,
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(unsigned long)(uintptr_t)mod->address, origin,
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mod->core ? " (core)" : "", mod->version, mod->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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