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root/svn/ircd-hybrid/trunk/src/modules.c

Comparing:
ircd-hybrid-8/src/modules.c (file contents), Revision 1228 by michael, Mon Sep 19 09:38:38 2011 UTC vs.
ircd-hybrid/trunk/src/modules.c (file contents), Revision 1618 by michael, Tue Oct 30 21:04:38 2012 UTC

#	Line 22 | Line 22
22		*  $Id$
23		*/
24
25	+	#include "ltdl.h"
26	+
27		#include "stdinc.h"
28		#include "list.h"
29		#include "modules.h"
30	<	#include "s_log.h"
30	>	#include "log.h"
31		#include "ircd.h"
32		#include "client.h"
33		#include "send.h"
34	<	#include "s_conf.h"
33	<	#include "handlers.h"
34	>	#include "conf.h"
35		#include "numeric.h"
36		#include "parse.h"
37		#include "ircd_defs.h"
#	Line 38 | Line 39
39		#include "memory.h"
40
41
42	<	dlink_list mod_list = { NULL, NULL, 0 };
42	>	dlink_list modules_list = { NULL, NULL, 0 };
43	>
44	>	static const char *unknown_ver = "<unknown>";
45
46		static const char *core_module_table[] =
47		{
#	Line 61 | Line 64 | static const char *core_module_table[] =
64		static dlink_list mod_paths = { NULL, NULL, 0 };
65		static dlink_list conf_modules = { NULL, NULL, 0 };
66
67	<	static void mo_modload(struct Client *, struct Client *, int, char *[]);
68	<	static void mo_modlist(struct Client *, struct Client *, int, char *[]);
69	<	static void mo_modreload(struct Client *, struct Client *, int, char *[]);
70	<	static void mo_modunload(struct Client *, struct Client *, int, char *[]);
71	<	static void mo_modrestart(struct Client *, struct Client *, int, char *[]);
69	<
70	<	struct Message modload_msgtab = {
71	<	"MODLOAD", 0, 0, 2, 0, MFLG_SLOW, 0,
72	<	{m_unregistered, m_not_oper, m_ignore, m_ignore, mo_modload, m_ignore}
73	<	};
67	>	int
68	>	modules_valid_suffix(const char *name)
69	>	{
70	>	return ((name = strrchr(name, '.'))) && !strcmp(name, ".la");
71	>	}
72
73	<	struct Message modunload_msgtab = {
74	<	"MODUNLOAD", 0, 0, 2, 0, MFLG_SLOW, 0,
75	<	{m_unregistered, m_not_oper, m_ignore, m_ignore, mo_modunload, m_ignore}
76	<	};
73	>	/* unload_one_module()
74	>	*
75	>	* inputs       - name of module to unload
76	>	*              - 1 to say modules unloaded, 0 to not
77	>	* output       - 0 if successful, -1 if error
78	>	* side effects - module is unloaded
79	>	*/
80	>	int
81	>	unload_one_module(const char *name, int warn)
82	>	{
83	>	struct module *modp = NULL;
84
85	<	struct Message modreload_msgtab = {
86	<	"MODRELOAD", 0, 0, 2, 0, MFLG_SLOW, 0,
82	<	{m_unregistered, m_not_oper, m_ignore, m_ignore, mo_modreload, m_ignore}
83	<	};
85	>	if ((modp = findmodule_byname(name)) == NULL)
86	>	return -1;
87
88	<	struct Message modlist_msgtab = {
89	<	"MODLIST", 0, 0, 0, 0, MFLG_SLOW, 0,
87	<	{m_unregistered, m_not_oper, m_ignore, m_ignore, mo_modlist, m_ignore}
88	<	};
88	>	if (modp->modexit)
89	>	modp->modexit();
90
91	<	struct Message modrestart_msgtab = {
92	<	"MODRESTART", 0, 0, 0, 0, MFLG_SLOW, 0,
93	<	{m_unregistered, m_not_oper, m_ignore, m_ignore, mo_modrestart, m_ignore}
94	<	};
91	>	assert(dlink_list_length(&modules_list) > 0);
92	>	dlinkDelete(&modp->node, &modules_list);
93	>	MyFree(modp->name);
94	>
95	>	lt_dlclose(modp->handle);
96	>
97	>	if (warn == 1)
98	>	{
99	>	ilog(LOG_TYPE_IRCD, "Module %s unloaded", name);
100	>	sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
101	>	"Module %s unloaded", name);
102	>	}
103	>
104	>	return 0;
105	>	}
106	>
107	>	/* load_a_module()
108	>	*
109	>	* inputs       - path name of module, int to notice, int of core
110	>	* output       - -1 if error 0 if success
111	>	* side effects - loads a module if successful
112	>	*/
113	>	int
114	>	load_a_module(const char *path, int warn)
115	>	{
116	>	lt_dlhandle tmpptr = NULL;
117	>	const char *mod_basename = NULL;
118	>	struct module *modp = NULL;
119	>
120	>	if (findmodule_byname((mod_basename = libio_basename(path))))
121	>	return 1;
122	>
123	>	if (!(tmpptr = lt_dlopen(path))) {
124	>	const char *err = ((err = lt_dlerror())) ? err : "<unknown>";
125	>
126	>	sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
127	>	"Error loading module %s: %s",
128	>	mod_basename, err);
129	>	ilog(LOG_TYPE_IRCD, "Error loading module %s: %s", mod_basename, err);
130	>	return -1;
131	>	}
132	>
133	>	if ((modp = lt_dlsym(tmpptr, "module_entry")) == NULL)
134	>	{
135	>	const char *err = ((err = lt_dlerror())) ? err : "<unknown>";
136	>
137	>	sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
138	>	"Error loading module %s: %s",
139	>	mod_basename, err);
140	>	ilog(LOG_TYPE_IRCD, "Error loading module %s: %s", mod_basename, err);
141	>	lt_dlclose(tmpptr);
142	>	return -1;
143	>	}
144	>
145	>	modp->handle = tmpptr;
146	>
147	>	if (EmptyString(modp->version))
148	>	modp->version = unknown_ver;
149
150	+	DupString(modp->name, mod_basename);
151	+	dlinkAdd(modp, &modp->node, &modules_list);
152	+
153	+	if (modp->modinit)
154	+	modp->modinit();
155	+
156	+	if (warn == 1)
157	+	{
158	+	sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
159	+	"Module %s [version: %s handle: %p] loaded.",
160	+	modp->name, modp->version, tmpptr);
161	+	ilog(LOG_TYPE_IRCD, "Module %s [version: %s handle: %p] loaded.",
162	+	modp->name, modp->version, tmpptr);
163	+	}
164	+
165	+	return 0;
166	+	}
167
168		/*
169		* modules_init
#	Line 103 | Line 175 | struct Message modrestart_msgtab = {
175		void
176		modules_init(void)
177		{
178	<	dynlink_init();
179	<
180	<	mod_add_cmd(&modload_msgtab);
181	<	mod_add_cmd(&modunload_msgtab);
182	<	mod_add_cmd(&modreload_msgtab);
183	<	mod_add_cmd(&modlist_msgtab);
112	<	mod_add_cmd(&modrestart_msgtab);
178	>	if (lt_dlinit())
179	>	{
180	>	ilog(LOG_TYPE_IRCD, "Couldn't initialize the libltdl run time dynamic"
181	>	" link library. Exiting.");
182	>	exit(0);
183	>	}
184		}
185
186		/* mod_find_path()
#	Line 122 | Line 193 | static struct module_path *
193		mod_find_path(const char *path)
194		{
195		dlink_node *ptr;
125	–	struct module_path *mpath;
196
197		DLINK_FOREACH(ptr, mod_paths.head)
198		{
199	<	mpath = ptr->data;
199	>	struct module_path *mpath = ptr->data;
200
201		if (!strcmp(path, mpath->path))
202		return mpath;
#	Line 181 | Line 251 | add_conf_module(const char *name)
251		void
252		mod_clear_paths(void)
253		{
254	<	struct module_path *pathst;
185	<	dlink_node *ptr;
186	<	dlink_node *next_ptr;
254	>	dlink_node *ptr = NULL, *next_ptr = NULL;
255
256		DLINK_FOREACH_SAFE(ptr, next_ptr, mod_paths.head)
257		{
258	<	pathst = ptr->data;
259	<
192	<	dlinkDelete(&pathst->node, &mod_paths);
193	<	MyFree(pathst);
258	>	dlinkDelete(ptr, &mod_paths);
259	>	MyFree(ptr->data);
260		}
261
262		DLINK_FOREACH_SAFE(ptr, next_ptr, conf_modules.head)
263		{
264	<	pathst = ptr->data;
265	<
200	<	dlinkDelete(&pathst->node, &conf_modules);
201	<	MyFree(pathst);
264	>	dlinkDelete(ptr, &conf_modules);
265	>	MyFree(ptr->data);
266		}
267		}
268
#	Line 208 | Line 272 | mod_clear_paths(void)
272		* output       - NULL if not found or pointer to module
273		* side effects - NONE
274		*/
275	<	dlink_node *
275	>	struct module *
276		findmodule_byname(const char *name)
277		{
278	<	dlink_node *ptr;
215	<	struct module *modp;
278	>	dlink_node *ptr = NULL;
279
280	<	DLINK_FOREACH(ptr, mod_list.head)
280	>	DLINK_FOREACH(ptr, modules_list.head)
281		{
282	<	modp = ptr->data;
282	>	struct module *modp = ptr->data;
283
284		if (strcmp(modp->name, name) == 0)
285	<	return ptr;
285	>	return modp;
286		}
287
288		return NULL;
#	Line 238 | Line 301 | load_all_modules(int warn)
301		struct dirent *ldirent = NULL;
302		char module_fq_name[PATH_MAX + 1];
303
241	–	modules_init();
242	–
304		if ((system_module_dir = opendir(AUTOMODPATH)) == NULL)
305		{
306	<	ilog(L_WARN, "Could not load modules from %s: %s",
306	>	ilog(LOG_TYPE_IRCD, "Could not load modules from %s: %s",
307		AUTOMODPATH, strerror(errno));
308		return;
309		}
#	Line 253 | Line 314 | load_all_modules(int warn)
314		{
315		snprintf(module_fq_name, sizeof(module_fq_name), "%s/%s",
316		AUTOMODPATH, ldirent->d_name);
317	<	load_a_module(module_fq_name, warn, 0);
317	>	load_a_module(module_fq_name, warn);
318		}
319		}
320
#	Line 270 | Line 331 | void
331		load_conf_modules(void)
332		{
333		dlink_node *ptr = NULL;
273	–	struct module_path *mpath = NULL;
334
335		DLINK_FOREACH(ptr, conf_modules.head)
336		{
337	<	mpath = ptr->data;
337	>	struct module_path *mpath = ptr->data;
338
339		if (findmodule_byname(mpath->path) == NULL)
340	<	load_one_module(mpath->path, 0);
340	>	load_one_module(mpath->path);
341		}
342		}
343
#	Line 298 | Line 358 | load_core_modules(int warn)
358		snprintf(module_name, sizeof(module_name), "%s%s",
359		MODPATH, core_module_table[i]);
360
361	<	if (load_a_module(module_name, warn, 1) == -1)
361	>	if (load_a_module(module_name, warn) == -1)
362		{
363	<	ilog(L_CRIT, "Error loading core module %s: terminating ircd",
363	>	ilog(LOG_TYPE_IRCD, "Error loading core module %s: terminating ircd",
364		core_module_table[i]);
365		exit(EXIT_FAILURE);
366		}
#	Line 315 | Line 375 | load_core_modules(int warn)
375		* side effects - module is loaded if found.
376		*/
377		int
378	<	load_one_module(const char *path, int coremodule)
378	>	load_one_module(const char *path)
379		{
380		dlink_node *ptr = NULL;
381		char modpath[PATH_MAX + 1];
#	Line 332 | Line 392 | load_one_module(const char *path, int co
392
393		if (strstr(modpath, "../") == NULL &&
394		strstr(modpath, "/..") == NULL)
335	–	{
395		if (!stat(modpath, &statbuf))
396	<	{
397	<	if (S_ISREG(statbuf.st_mode))
339	<	{
340	<	/* Regular files only please */
341	<	return load_a_module(modpath, 1, coremodule);
342	<	}
343	<	}
344	<	}
396	>	if (S_ISREG(statbuf.st_mode))  /* Regular files only please */
397	>	return load_a_module(modpath, 1);
398		}
399
400	<	sendto_realops_flags(UMODE_ALL, L_ALL,
400	>	sendto_realops_flags(UMODE_ALL, L_ALL, SEND_NOTICE,
401		"Cannot locate module %s", path);
402	<	ilog(L_WARN, "Cannot locate module %s", path);
402	>	ilog(LOG_TYPE_IRCD, "Cannot locate module %s", path);
403		return -1;
404		}
352	–
353	–	/* load a module .. */
354	–	static void
355	–	mo_modload(struct Client *client_p, struct Client *source_p,
356	–	int parc, char *parv[])
357	–	{
358	–	const char *m_bn = NULL;
359	–
360	–	if (!HasOFlag(source_p, OPER_FLAG_MODULE))
361	–	{
362	–	sendto_one(source_p, form_str(ERR_NOPRIVILEGES),
363	–	me.name, source_p->name);
364	–	return;
365	–	}
366	–
367	–	m_bn = libio_basename(parv[1]);
368	–
369	–	if (findmodule_byname(m_bn) != NULL)
370	–	{
371	–	sendto_one(source_p, ":%s NOTICE %s :Module %s is already loaded",
372	–	me.name, source_p->name, m_bn);
373	–	return;
374	–	}
375	–
376	–	load_one_module(parv[1], 0);
377	–	}
378	–
379	–	/* unload a module .. */
380	–	static void
381	–	mo_modunload(struct Client *client_p, struct Client *source_p,
382	–	int parc, char *parv[])
383	–	{
384	–	const char *m_bn = NULL;
385	–	dlink_node *ptr;
386	–	struct module *modp;
387	–
388	–	if (!HasOFlag(source_p, OPER_FLAG_MODULE))
389	–	{
390	–	sendto_one(source_p, form_str(ERR_NOPRIVILEGES),
391	–	me.name, source_p->name);
392	–	return;
393	–	}
394	–
395	–	m_bn = libio_basename(parv[1]);
396	–
397	–	if ((ptr = findmodule_byname(m_bn)) == NULL)
398	–	{
399	–	sendto_one(source_p, ":%s NOTICE %s :Module %s is not loaded",
400	–	me.name, source_p->name, m_bn);
401	–	return;
402	–	}
403	–
404	–	modp = ptr->data;
405	–
406	–	if (modp->core == 1)
407	–	{
408	–	sendto_one(source_p,
409	–	":%s NOTICE %s :Module %s is a core module and may not be unloaded",
410	–	me.name, source_p->name, m_bn);
411	–	return;
412	–	}
413	–
414	–	/* XXX might want to simply un dlink it here */
415	–
416	–	if (unload_one_module(m_bn, 1) == -1)
417	–	{
418	–	sendto_one(source_p, ":%s NOTICE %s :Module %s is not loaded",
419	–	me.name, source_p->name, m_bn);
420	–	}
421	–	}
422	–
423	–	/* unload and load in one! */
424	–	static void
425	–	mo_modreload(struct Client *client_p, struct Client *source_p,
426	–	int parc, char *parv[])
427	–	{
428	–	const char *m_bn = NULL;
429	–	dlink_node *ptr;
430	–	struct module *modp;
431	–	int check_core;
432	–
433	–	if (!HasOFlag(source_p, OPER_FLAG_MODULE))
434	–	{
435	–	sendto_one(source_p, form_str(ERR_NOPRIVILEGES),
436	–	me.name, source_p->name);
437	–	return;
438	–	}
439	–
440	–	m_bn = libio_basename(parv[1]);
441	–
442	–	if ((ptr = findmodule_byname(m_bn)) == NULL)
443	–	{
444	–	sendto_one(source_p, ":%s NOTICE %s :Module %s is not loaded",
445	–	me.name, source_p->name, m_bn);
446	–	return;
447	–	}
448	–
449	–	modp = ptr->data;
450	–	check_core = modp->core;
451	–
452	–	if (unload_one_module(m_bn, 1) == -1)
453	–	{
454	–	sendto_one(source_p, ":%s NOTICE %s :Module %s is not loaded",
455	–	me.name, source_p->name, m_bn);
456	–	return;
457	–	}
458	–
459	–	if ((load_one_module(parv[1], check_core) == -1) && check_core)
460	–	{
461	–	sendto_realops_flags(UMODE_ALL, L_ALL, "Error reloading core "
462	–	"module: %s: terminating ircd", parv[1]);
463	–	ilog(L_CRIT, "Error loading core module %s: terminating ircd", parv[1]);
464	–	exit(0);
465	–	}
466	–	}
467	–
468	–	/* list modules .. */
469	–	static void
470	–	mo_modlist(struct Client *client_p, struct Client *source_p,
471	–	int parc, char *parv[])
472	–	{
473	–	const dlink_node *ptr = NULL;
474	–
475	–	if (!HasOFlag(source_p, OPER_FLAG_MODULE))
476	–	{
477	–	sendto_one(source_p, form_str(ERR_NOPRIVILEGES),
478	–	me.name, source_p->name);
479	–	return;
480	–	}
481	–
482	–	DLINK_FOREACH(ptr, mod_list.head)
483	–	{
484	–	const struct module *modp = ptr->data;
485	–
486	–	if (parc > 1 && !match(parv[1], modp->name))
487	–	continue;
488	–
489	–	sendto_one(source_p, form_str(RPL_MODLIST), me.name, parv[0],
490	–	modp->name, modp->handle,
491	–	modp->version, modp->core?"(core)":"");
492	–	}
493	–
494	–	sendto_one(source_p, form_str(RPL_ENDOFMODLIST),
495	–	me.name, source_p->name);
496	–	}
497	–
498	–	/* unload and reload all modules */
499	–	static void
500	–	mo_modrestart(struct Client *client_p, struct Client *source_p,
501	–	int parc, char *parv[])
502	–	{
503	–	unsigned int modnum = 0;
504	–	dlink_node *ptr = NULL, *ptr_next = NULL;
505	–
506	–	if (!HasOFlag(source_p, OPER_FLAG_MODULE))
507	–	{
508	–	sendto_one(source_p, form_str(ERR_NOPRIVILEGES),
509	–	me.name, source_p->name);
510	–	return;
511	–	}
512	–
513	–	sendto_one(source_p, ":%s NOTICE %s :Reloading all modules",
514	–	me.name, source_p->name);
515	–
516	–	modnum = dlink_list_length(&mod_list);
517	–
518	–	DLINK_FOREACH_SAFE(ptr, ptr_next, mod_list.head)
519	–	{
520	–	struct module *modp = ptr->data;
521	–	unload_one_module(modp->name, 0);
522	–	}
523	–
524	–	load_all_modules(0);
525	–	load_conf_modules();
526	–	load_core_modules(0);
527	–
528	–	sendto_realops_flags(UMODE_ALL, L_ALL,
529	–	"Module Restart: %u modules unloaded, %u modules loaded",
530	–	modnum, dlink_list_length(&mod_list));
531	–	ilog(L_WARN, "Module Restart: %u modules unloaded, %u modules loaded",
532	–	modnum, dlink_list_length(&mod_list));
533	–	}

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