trunk/src/conf_class.c

/*
 *  ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
 *
 *  Copyright (C) 2002 by the past and present ircd coders, and others.
 *
 *  This program is free software; you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation; either version 2 of the License, or
 *  (at your option) any later version.
 *
 *  This program is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
 *  USA
 */

/*! \file
 * \brief Configuration managment for class{} blocks
 * \version $Id$
 */

#include "stdinc.h"
#include "list.h"
#include "ircd_defs.h"
#include "balloc.h"
#include "conf.h"
#include "s_serv.h"
#include "resv.h"
#include "channel.h"
#include "client.h"
#include "event.h"
#include "hook.h"
#include "irc_string.h"
#include "s_bsd.h"
#include "ircd.h"
#include "listener.h"
#include "hostmask.h"
#include "modules.h"
#include "numeric.h"
#include "fdlist.h"
#include "log.h"
#include "send.h"
#include "s_gline.h"
#include "memory.h"
#include "irc_res.h"
#include "userhost.h"
#include "s_user.h"
#include "channel_mode.h"
#include "parse.h"
#include "s_misc.h"
#include "conf_db.h"


struct ClassItem *class_default;

static dlink_list class_list = { NULL, NULL, 0 };


const dlink_list *
class_get_list(void)
{
  return &class_list;
}

struct ClassItem *
class_make(void)
{
  struct ClassItem *class = MyMalloc(sizeof(*class));

  class->active    = 1;
  class->con_freq  = DEFAULT_CONNECTFREQUENCY;
  class->ping_freq = DEFAULT_PINGFREQUENCY;
  class->max_total = MAXIMUM_LINKS_DEFAULT;
  class->max_sendq = DEFAULT_SENDQ;
  class->max_recvq = DEFAULT_RECVQ;

  dlinkAdd(class, &class->node, &class_list);

  return class;
}

void
class_free(struct ClassItem *class)
{
  assert(class);
  assert(class->active    == 0);
  assert(class->ref_count == 0);

  dlinkDelete(&class->node, &class_list);
  MyFree(class->name);
  MyFree(class);
}

void
class_init(void)
{
  (class_default = class_make())->name = xstrdup("default");
}

const char *
get_client_class(const dlink_list *const list)
{
  const dlink_node *ptr = NULL;

  if ((ptr = list->head)) {
    const struct MaskItem *conf = ptr->data;

    assert(conf->class);
    assert(conf->type & (CONF_OPERATOR | CONF_CLIENT | CONF_SERVER));

    return conf->class->name;
  }

  return class_default->name;
}

unsigned int
get_client_ping(const dlink_list *const list)
{
  const dlink_node *ptr = NULL;

  if ((ptr = list->head)) {
    const struct MaskItem *conf = ptr->data;

    assert(aconf->class);
    assert(aconf->type & (CONF_OPERATOR | CONF_CLIENT | CONF_SERVER));

    return conf->class->ping_freq;
  }

  return class_default->ping_freq;
}

unsigned int
get_sendq(const dlink_list *const list)
{
  const dlink_node *ptr = NULL;

  if ((ptr = list->head)) {
    const struct MaskItem *conf = ptr->data;

    assert(conf->class);
    assert(conf->type & (CONF_OPERATOR | CONF_CLIENT | CONF_SERVER));

    return conf->class->max_sendq;
  }

  return class_default->max_sendq;
}

unsigned int
get_recvq(const dlink_list *const list)
{
  const dlink_node *ptr = NULL;

  if ((ptr = list->head)) {
    const struct MaskItem *conf = ptr->data;

    assert(conf->class);
    assert(conf->type & (CONF_OPERATOR | CONF_CLIENT | CONF_SERVER));

    return conf->class->max_recvq;
  }

  return class_default->max_recvq;
}

/*
 * inputs       - Integer (Number of class)
 * output       - Pointer to ClassItem struct. Non-NULL expected
 * side effects - NONE
 */
struct ClassItem *
class_find(const char *name, int active)
{
  dlink_node *ptr = NULL;

  DLINK_FOREACH(ptr, class_list.head) {
    struct ClassItem *class = ptr->data;

    if (!irccmp(class->name, name))
      return active && !class->active ? NULL : class;
  }

  return NULL;
}

/*
 * We don't delete the class table, rather mark all entries for deletion.
 * The table is cleaned up by delete_marked_classes. - avalon
 */
void
class_mark_for_deletion(void)
{
  dlink_node *ptr = NULL;

  DLINK_FOREACH_PREV(ptr, class_list.tail->prev)
    ((struct ClassItem *)ptr->data)->active = 0;
}

void
class_delete_marked(void)
{
  dlink_node *ptr = NULL, *ptr_next = NULL;

  DLINK_FOREACH_SAFE(ptr, ptr_next, class_list.head) {
    struct ClassItem *class = ptr->data;

    if (!class->active && !class->ref_count)
    {
      destroy_cidr_class(class);
      class_free(class);
    }
  }
}

/*
 * cidr_limit_reached
 *
 * inputs       - int flag allowing over_rule of limits
 *              - pointer to the ip to be added
 *              - pointer to the class
 * output       - non zero if limit reached
 *                0 if limit not reached
 * side effects -
 */
int
cidr_limit_reached(int over_rule,
                   struct irc_ssaddr *ip, struct ClassItem *class)
{
  dlink_node *ptr = NULL;
  struct CidrItem *cidr = NULL;

  if (class->number_per_cidr == 0)
    return 0;

  if (ip->ss.ss_family == AF_INET)
  {
    if (class->cidr_bitlen_ipv4 == 0)
      return 0;

    DLINK_FOREACH(ptr, class->list_ipv4.head)
    {
      cidr = ptr->data;
      if (match_ipv4(ip, &cidr->mask, class->cidr_bitlen_ipv4))
      {
        if (!over_rule && (cidr->number_on_this_cidr >= class->number_per_cidr))
          return -1;
        cidr->number_on_this_cidr++;
        return 0;
      }
    }
    cidr = MyMalloc(sizeof(struct CidrItem));
    cidr->number_on_this_cidr = 1;
    cidr->mask = *ip;
    mask_addr(&cidr->mask, class->cidr_bitlen_ipv4);
    dlinkAdd(cidr, &cidr->node, &class->list_ipv4);
  }
#ifdef IPV6
  else if (class->cidr_bitlen_ipv6 > 0)
  {
    DLINK_FOREACH(ptr, class->list_ipv6.head)
    {
      cidr = ptr->data;
      if (match_ipv6(ip, &cidr->mask, class->cidr_bitlen_ipv6))
      {
        if (!over_rule && (cidr->number_on_this_cidr >= class->number_per_cidr))
          return -1;
        cidr->number_on_this_cidr++;
        return 0;
      }
    }
    cidr = MyMalloc(sizeof(struct CidrItem));
    cidr->number_on_this_cidr = 1;
    cidr->mask = *ip;
    mask_addr(&cidr->mask, class->cidr_bitlen_ipv6);
    dlinkAdd(cidr, &cidr->node, &class->list_ipv6);
  }
#endif
  return 0;
}

/*
 * remove_from_cidr_check
 *
 * inputs       - pointer to the ip to be removed
 *              - pointer to the class
 * output       - NONE
 * side effects -
 */
void
remove_from_cidr_check(struct irc_ssaddr *ip, struct ClassItem *aclass)
{
  dlink_node *ptr = NULL;
  dlink_node *next_ptr = NULL;
  struct CidrItem *cidr;

  if (aclass->number_per_cidr == 0)
    return;

  if (ip->ss.ss_family == AF_INET)
  {
    if (aclass->cidr_bitlen_ipv4 == 0)
      return;

    DLINK_FOREACH_SAFE(ptr, next_ptr, aclass->list_ipv4.head)
    {
      cidr = ptr->data;
      if (match_ipv4(ip, &cidr->mask, aclass->cidr_bitlen_ipv4))
      {
        cidr->number_on_this_cidr--;
        if (cidr->number_on_this_cidr == 0)
        {
          dlinkDelete(ptr, &aclass->list_ipv4);
          MyFree(cidr);
          return;
        }
      }
    }
  }
#ifdef IPV6
  else if (aclass->cidr_bitlen_ipv6 > 0)
  {
    DLINK_FOREACH_SAFE(ptr, next_ptr, aclass->list_ipv6.head)
    {
      cidr = ptr->data;
      if (match_ipv6(ip, &cidr->mask, aclass->cidr_bitlen_ipv6))
      {
        cidr->number_on_this_cidr--;
        if (cidr->number_on_this_cidr == 0)
        {
          dlinkDelete(ptr, &aclass->list_ipv6);
          MyFree(cidr);
          return;
        }
      }
    }
  }
#endif
}

void
rebuild_cidr_list(struct ClassItem *class)
{
  dlink_node *ptr;

  destroy_cidr_class(class);

  DLINK_FOREACH(ptr, local_client_list.head)
  {
    struct Client *client_p = ptr->data;
    struct MaskItem *conf = client_p->localClient->confs.tail->data;

    if (conf && (conf->type == CONF_CLIENT))
      if (conf->class == class)
        cidr_limit_reached(1, &client_p->localClient->ip, class);
  }
}

/*
 * destroy_cidr_list
 *
 * inputs       - pointer to class dlink list of cidr blocks
 * output       - none
 * side effects - completely destroys the class link list of cidr blocks
 */
static void
destroy_cidr_list(dlink_list *list)
{
  dlink_node *ptr = NULL, *next_ptr = NULL;

  DLINK_FOREACH_SAFE(ptr, next_ptr, list->head)
  {
    dlinkDelete(ptr, list);
    MyFree(ptr->data);
  }
}

/*
 * destroy_cidr_class
 *
 * inputs       - pointer to class
 * output       - none
 * side effects - completely destroys the class link list of cidr blocks
 */
void
destroy_cidr_class(struct ClassItem *class)
{
  destroy_cidr_list(&class->list_ipv4);
  destroy_cidr_list(&class->list_ipv6);
}
Revision:	1650
Committed:	Sat Nov 10 20:57:51 2012 UTC (12 years, 9 months ago) by michael
Content type:	text/x-csrc
File size:	8695 byte(s)
Log Message:	- Fixed few bugs that have been introduced with config rewrite - Set some reasonable default values right after a class has been created
#	User	Rev	Content
1	michael	1633	/*
2			* ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
3			*
4			* Copyright (C) 2002 by the past and present ircd coders, and others.
5			*
6			* This program is free software; you can redistribute it and/or modify
7			* it under the terms of the GNU General Public License as published by
8			* the Free Software Foundation; either version 2 of the License, or
9			* (at your option) any later version.
10			*
11			* This program is distributed in the hope that it will be useful,
12			* but WITHOUT ANY WARRANTY; without even the implied warranty of
13			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14			* GNU General Public License for more details.
15			*
16			* You should have received a copy of the GNU General Public License
17			* along with this program; if not, write to the Free Software
18			* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
19			* USA
20			*/
21
22			/*! \file
23			* \brief Configuration managment for class{} blocks
24	michael	1635	* \version $Id$
25	michael	1633	*/
26
27			#include "stdinc.h"
28			#include "list.h"
29			#include "ircd_defs.h"
30			#include "balloc.h"
31			#include "conf.h"
32			#include "s_serv.h"
33			#include "resv.h"
34			#include "channel.h"
35			#include "client.h"
36			#include "event.h"
37			#include "hook.h"
38			#include "irc_string.h"
39			#include "s_bsd.h"
40			#include "ircd.h"
41			#include "listener.h"
42			#include "hostmask.h"
43			#include "modules.h"
44			#include "numeric.h"
45			#include "fdlist.h"
46			#include "log.h"
47			#include "send.h"
48			#include "s_gline.h"
49			#include "memory.h"
50			#include "irc_res.h"
51			#include "userhost.h"
52			#include "s_user.h"
53			#include "channel_mode.h"
54			#include "parse.h"
55			#include "s_misc.h"
56			#include "conf_db.h"
57
58
59			struct ClassItem *class_default;
60
61			static dlink_list class_list = { NULL, NULL, 0 };
62
63
64			const dlink_list *
65			class_get_list(void)
66			{
67			return &class_list;
68			}
69
70			struct ClassItem *
71			class_make(void)
72			{
73			struct ClassItem class = MyMalloc(sizeof(class));
74
75	michael	1650	class->active = 1;
76			class->con_freq = DEFAULT_CONNECTFREQUENCY;
77			class->ping_freq = DEFAULT_PINGFREQUENCY;
78			class->max_total = MAXIMUM_LINKS_DEFAULT;
79			class->max_sendq = DEFAULT_SENDQ;
80			class->max_recvq = DEFAULT_RECVQ;
81
82	michael	1633	dlinkAdd(class, &class->node, &class_list);
83
84			return class;
85			}
86
87			void
88			class_free(struct ClassItem *class)
89			{
90			assert(class);
91			assert(class->active == 0);
92			assert(class->ref_count == 0);
93
94			dlinkDelete(&class->node, &class_list);
95			MyFree(class->name);
96			MyFree(class);
97			}
98
99			void
100			class_init(void)
101			{
102	michael	1650	(class_default = class_make())->name = xstrdup("default");
103	michael	1633	}
104
105			const char *
106			get_client_class(const dlink_list *const list)
107			{
108			const dlink_node *ptr = NULL;
109
110			if ((ptr = list->head)) {
111			const struct MaskItem *conf = ptr->data;
112
113			assert(conf->class);
114			assert(conf->type & (CONF_OPERATOR \| CONF_CLIENT \| CONF_SERVER));
115
116			return conf->class->name;
117			}
118
119			return class_default->name;
120			}
121
122			unsigned int
123	michael	1644	get_client_ping(const dlink_list *const list)
124	michael	1633	{
125			const dlink_node *ptr = NULL;
126
127			if ((ptr = list->head)) {
128			const struct MaskItem *conf = ptr->data;
129
130			assert(aconf->class);
131			assert(aconf->type & (CONF_OPERATOR \| CONF_CLIENT \| CONF_SERVER));
132
133	michael	1644	return conf->class->ping_freq;
134	michael	1633	}
135
136			return class_default->ping_freq;
137			}
138
139			unsigned int
140			get_sendq(const dlink_list *const list)
141			{
142			const dlink_node *ptr = NULL;
143
144			if ((ptr = list->head)) {
145			const struct MaskItem *conf = ptr->data;
146
147			assert(conf->class);
148			assert(conf->type & (CONF_OPERATOR \| CONF_CLIENT \| CONF_SERVER));
149
150			return conf->class->max_sendq;
151			}
152
153			return class_default->max_sendq;
154			}
155
156			unsigned int
157			get_recvq(const dlink_list *const list)
158			{
159			const dlink_node *ptr = NULL;
160
161			if ((ptr = list->head)) {
162			const struct MaskItem *conf = ptr->data;
163
164			assert(conf->class);
165			assert(conf->type & (CONF_OPERATOR \| CONF_CLIENT \| CONF_SERVER));
166
167			return conf->class->max_recvq;
168			}
169
170			return class_default->max_recvq;
171			}
172
173			/*
174			* inputs - Integer (Number of class)
175			* output - Pointer to ClassItem struct. Non-NULL expected
176			* side effects - NONE
177			*/
178			struct ClassItem *
179			class_find(const char *name, int active)
180			{
181			dlink_node *ptr = NULL;
182
183			DLINK_FOREACH(ptr, class_list.head) {
184			struct ClassItem *class = ptr->data;
185
186			if (!irccmp(class->name, name))
187			return active && !class->active ? NULL : class;
188			}
189
190			return NULL;
191			}
192
193			/*
194			* We don't delete the class table, rather mark all entries for deletion.
195			* The table is cleaned up by delete_marked_classes. - avalon
196			*/
197			void
198			class_mark_for_deletion(void)
199			{
200			dlink_node *ptr = NULL;
201
202	michael	1650	DLINK_FOREACH_PREV(ptr, class_list.tail->prev)
203			((struct ClassItem *)ptr->data)->active = 0;
204	michael	1633	}
205
206			void
207			class_delete_marked(void)
208			{
209			dlink_node ptr = NULL, ptr_next = NULL;
210
211			DLINK_FOREACH_SAFE(ptr, ptr_next, class_list.head) {
212			struct ClassItem *class = ptr->data;
213
214			if (!class->active && !class->ref_count)
215			{
216			destroy_cidr_class(class);
217			class_free(class);
218			}
219			}
220			}
221
222			/*
223			* cidr_limit_reached
224			*
225			* inputs - int flag allowing over_rule of limits
226			* - pointer to the ip to be added
227			* - pointer to the class
228			* output - non zero if limit reached
229			* 0 if limit not reached
230			* side effects -
231			*/
232			int
233			cidr_limit_reached(int over_rule,
234			struct irc_ssaddr ip, struct ClassItem class)
235			{
236			dlink_node *ptr = NULL;
237			struct CidrItem *cidr = NULL;
238
239	michael	1644	if (class->number_per_cidr == 0)
240	michael	1633	return 0;
241
242			if (ip->ss.ss_family == AF_INET)
243			{
244	michael	1644	if (class->cidr_bitlen_ipv4 == 0)
245	michael	1633	return 0;
246
247			DLINK_FOREACH(ptr, class->list_ipv4.head)
248			{
249			cidr = ptr->data;
250			if (match_ipv4(ip, &cidr->mask, class->cidr_bitlen_ipv4))
251			{
252			if (!over_rule && (cidr->number_on_this_cidr >= class->number_per_cidr))
253			return -1;
254			cidr->number_on_this_cidr++;
255			return 0;
256			}
257			}
258			cidr = MyMalloc(sizeof(struct CidrItem));
259			cidr->number_on_this_cidr = 1;
260			cidr->mask = *ip;
261			mask_addr(&cidr->mask, class->cidr_bitlen_ipv4);
262			dlinkAdd(cidr, &cidr->node, &class->list_ipv4);
263			}
264			#ifdef IPV6
265			else if (class->cidr_bitlen_ipv6 > 0)
266			{
267			DLINK_FOREACH(ptr, class->list_ipv6.head)
268			{
269			cidr = ptr->data;
270			if (match_ipv6(ip, &cidr->mask, class->cidr_bitlen_ipv6))
271			{
272			if (!over_rule && (cidr->number_on_this_cidr >= class->number_per_cidr))
273			return -1;
274			cidr->number_on_this_cidr++;
275			return 0;
276			}
277			}
278			cidr = MyMalloc(sizeof(struct CidrItem));
279			cidr->number_on_this_cidr = 1;
280			cidr->mask = *ip;
281			mask_addr(&cidr->mask, class->cidr_bitlen_ipv6);
282			dlinkAdd(cidr, &cidr->node, &class->list_ipv6);
283			}
284			#endif
285			return 0;
286			}
287
288			/*
289			* remove_from_cidr_check
290			*
291			* inputs - pointer to the ip to be removed
292			* - pointer to the class
293			* output - NONE
294			* side effects -
295			*/
296			void
297			remove_from_cidr_check(struct irc_ssaddr ip, struct ClassItem aclass)
298			{
299			dlink_node *ptr = NULL;
300			dlink_node *next_ptr = NULL;
301			struct CidrItem *cidr;
302
303			if (aclass->number_per_cidr == 0)
304			return;
305
306			if (ip->ss.ss_family == AF_INET)
307			{
308	michael	1644	if (aclass->cidr_bitlen_ipv4 == 0)
309	michael	1633	return;
310
311			DLINK_FOREACH_SAFE(ptr, next_ptr, aclass->list_ipv4.head)
312			{
313			cidr = ptr->data;
314			if (match_ipv4(ip, &cidr->mask, aclass->cidr_bitlen_ipv4))
315			{
316			cidr->number_on_this_cidr--;
317			if (cidr->number_on_this_cidr == 0)
318			{
319			dlinkDelete(ptr, &aclass->list_ipv4);
320			MyFree(cidr);
321			return;
322			}
323			}
324			}
325			}
326			#ifdef IPV6
327			else if (aclass->cidr_bitlen_ipv6 > 0)
328			{
329			DLINK_FOREACH_SAFE(ptr, next_ptr, aclass->list_ipv6.head)
330			{
331			cidr = ptr->data;
332			if (match_ipv6(ip, &cidr->mask, aclass->cidr_bitlen_ipv6))
333			{
334			cidr->number_on_this_cidr--;
335			if (cidr->number_on_this_cidr == 0)
336			{
337			dlinkDelete(ptr, &aclass->list_ipv6);
338			MyFree(cidr);
339			return;
340			}
341			}
342			}
343			}
344			#endif
345			}
346
347	michael	1647	void
348			rebuild_cidr_list(struct ClassItem *class)
349	michael	1633	{
350			dlink_node *ptr;
351
352	michael	1647	destroy_cidr_class(class);
353	michael	1633
354			DLINK_FOREACH(ptr, local_client_list.head)
355			{
356	michael	1647	struct Client *client_p = ptr->data;
357			struct MaskItem *conf = client_p->localClient->confs.tail->data;
358	michael	1633
359	michael	1647	if (conf && (conf->type == CONF_CLIENT))
360			if (conf->class == class)
361			cidr_limit_reached(1, &client_p->localClient->ip, class);
362	michael	1633	}
363			}
364
365			/*
366			* destroy_cidr_list
367			*
368			* inputs - pointer to class dlink list of cidr blocks
369			* output - none
370			* side effects - completely destroys the class link list of cidr blocks
371			*/
372			static void
373			destroy_cidr_list(dlink_list *list)
374			{
375			dlink_node ptr = NULL, next_ptr = NULL;
376
377			DLINK_FOREACH_SAFE(ptr, next_ptr, list->head)
378			{
379			dlinkDelete(ptr, list);
380			MyFree(ptr->data);
381			}
382			}
383
384			/*
385			* destroy_cidr_class
386			*
387			* inputs - pointer to class
388			* output - none
389			* side effects - completely destroys the class link list of cidr blocks
390			*/
391			void
392			destroy_cidr_class(struct ClassItem *class)
393			{
394			destroy_cidr_list(&class->list_ipv4);
395			destroy_cidr_list(&class->list_ipv6);
396			}