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solanum-vs-hackint-and-char.../modules/core/m_modules.c
Simon Arlott d8f0b5d763
cppcheck: fix various warnings/errors 
[ircd/match.c:316]: (error) Shifting a negative value is undefined behaviour
[librb/src/patricia.c:55]: (error) Shifting a negative value is undefined behaviour
[modules/m_alias.c:64]: (portability) '(void*)message' is of type 'void *'. When using void pointers in calculations, the behaviour is undefined.
[modules/m_time.c:111]: (warning) %u in format string (no. 9) requires 'unsigned int' but the argument type is 'signed int'.
[modules/m_time.c:111]: (warning) %u in format string (no. 10) requires 'unsigned int' but the argument type is 'signed int'.
[librb/src/dictionary.c:819]: (warning) %d in format string (no. 3) requires 'int' but the argument type is 'unsigned int'.
[librb/src/radixtree.c:1080]: (warning) %d in format string (no. 3) requires 'int' but the argument type is 'unsigned int'.
[ircd/s_user.c:351] -> [ircd/s_user.c:357]: (warning) Either the condition '0!=source_p' is redundant or there is possible null pointer dereference: source_p.
[extensions/ip_cloaking_3.0.c:109]: (warning, inconclusive) The buffer 'buf' may not be null-terminated after the call to strncpy().
[ircd/chmode.c:256]: (style) Clarify calculation precedence for '&' and '?'.
[modules/m_help.c:100]: (style) Clarify calculation precedence for '&' and '?'.
[modules/m_knock.c:169]: (style) Clarify calculation precedence for '&' and '?'.
[modules/m_stats.c:628]: (style) Clarify calculation precedence for '&' and '?'.
[modules/m_stats.c:727]: (style) Clarify calculation precedence for '&' and '?'.
[librb/src/radixtree.c:601]: (style) Clarify calculation precedence for '&' and '?'.
[librb/src/radixtree.c:704]: (style) Clarify calculation precedence for '&' and '?'.
[librb/src/radixtree.c:739]: (style) Clarify calculation precedence for '&' and '?'.
[librb/src/radixtree.c:763]: (style) Clarify calculation precedence for '&' and '?'.
[librb/src/radixtree.c:768]: (style) Clarify calculation precedence for '&' and '?'.
[librb/src/radixtree.c:774]: (style) Clarify calculation precedence for '&' and '?'.
[librb/src/radixtree.c:781]: (style) Clarify calculation precedence for '&' and '?'.
[librb/src/radixtree.c:786]: (style) Clarify calculation precedence for '&' and '?'.
[librb/src/radixtree.c:791]: (style) Clarify calculation precedence for '&' and '?'.
[librb/src/radixtree.c:804]: (style) Clarify calculation precedence for '&' and '?'.
[ircd/wsproc.c:372]: (style) Unused variable: len
[modules/core/m_modules.c:382]: (style) Unused variable: i
[modules/m_stats.c:741]: (style) Unused variable: amsg
[ircd/authproc.c:390]: (style) Unused variable: iter
[ircd/authproc.c:391]: (style) Unused variable: client_p
2016-10-28 20:13:36 +01:00

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