trunk/modules/m_accept.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 m_accept.c
 * \brief Includes required functions for processing the ACCEPT command.
 * \version $Id$
 */

#include "stdinc.h"
#include "handlers.h"
#include "client.h"
#include "irc_string.h"
#include "sprintf_irc.h"
#include "ircd.h"
#include "list.h"
#include "numeric.h"
#include "s_conf.h"
#include "s_serv.h"
#include "send.h"
#include "msg.h"
#include "parse.h"
#include "modules.h"


/*! \brief Creates and sends a list of nick!user\@host masks a Client
 *         has on its acceptlist.
 *
 * \param source_p The actual Client the list will be sent to.
 */
static void
list_accepts(struct Client *source_p)
{
  int len = 0;
  char nicks[IRCD_BUFSIZE] = { '\0' };
  char *t = nicks;
  const dlink_node *ptr = NULL;

  len = strlen(me.name) + strlen(source_p->name) + 12;

  DLINK_FOREACH(ptr, source_p->localClient->acceptlist.head)
  {
    const struct split_nuh_item *accept_p = ptr->data;
    size_t masklen = strlen(accept_p->nickptr) +
                     strlen(accept_p->userptr) +
                     strlen(accept_p->hostptr) + 2 /* !@ */ ;

    if ((t - nicks) + masklen + len  > IRCD_BUFSIZE)
    {
      *(t - 1) = '\0';
      sendto_one(source_p, form_str(RPL_ACCEPTLIST),
                 me.name, source_p->name, nicks);
      t = nicks;
    }

    t += ircsprintf(t, "%s!%s@%s ",
                    accept_p->nickptr,
                    accept_p->userptr, accept_p->hostptr);
  }

  if (nicks[0] != '\0')
  {
    *(t - 1) = '\0';
    sendto_one(source_p, form_str(RPL_ACCEPTLIST),
               me.name, source_p->name, nicks);
  }

  sendto_one(source_p, form_str(RPL_ENDOFACCEPT),
             me.name, source_p->name);
}

/*! \brief Allocates and adds a split_nuh_item holding a nick!user\@host
 *         mask to a Client's acceptlist.
 *
 * \param nuh      A split_nuh_item already prepared with required masks.
 * \param source_p The actual Client the new accept is added to.
 */
static void
add_accept(const struct split_nuh_item *nuh, struct Client *source_p)
{
  struct split_nuh_item *accept_p = MyMalloc(sizeof(*accept_p));

  DupString(accept_p->nickptr, nuh->nickptr);
  DupString(accept_p->userptr, nuh->userptr);
  DupString(accept_p->hostptr, nuh->hostptr);

  dlinkAdd(accept_p, &accept_p->node, &source_p->localClient->acceptlist);

  list_accepts(source_p);
}

/*! \brief ACCEPT command handler
 *
 * \param client_p Pointer to allocated Client struct with physical connection
 *                 to this server, i.e. with an open socket connected.
 * \param source_p Pointer to allocated Client struct from which the message
 *                 originally comes from.  This can be a local or remote client.
 * \param parc     Integer holding the number of supplied arguments.
 * \param parv     Argument vector where parv[0] .. parv[parc-1] are non-NULL
 *                 pointers.
 * \note Valid arguments for this command are:
 *      - parv[0] = sender prefix
 *      - parv[1] = list of masks to be accepted or removed (optional)
 */
static void
m_accept(struct Client *client_p, struct Client *source_p,
         int parc, char *parv[])
{
  char *mask = NULL;
  char *p = NULL;
  char nick[NICKLEN + 1];
  char user[USERLEN + 1];
  char host[HOSTLEN + 1];
  struct split_nuh_item nuh;
  struct split_nuh_item *accept_p = NULL;

  if (EmptyString(parv[1]) || !irccmp(parv[1], "*"))
  {
    list_accepts(source_p);
    return;
  }

  for (mask = strtoken(&p, parv[1], ","); mask != NULL;
       mask = strtoken(&p,    NULL, ","))
  {
    if (*mask == '-' && *++mask != '\0')
    {
      nuh.nuhmask  = mask;
      nuh.nickptr  = nick;
      nuh.userptr  = user;
      nuh.hostptr  = host;

      nuh.nicksize = sizeof(nick);
      nuh.usersize = sizeof(user);
      nuh.hostsize = sizeof(host);

      split_nuh(&nuh);

      if ((accept_p = find_accept(nick, user, host, source_p, 0)) == NULL)
      {
        sendto_one(source_p, form_str(ERR_ACCEPTNOT),
                   me.name, source_p->name, nick, user, host);
        continue;
      }

      del_accept(accept_p, source_p);
    }
    else if (*mask != '\0')
    {
      if (dlink_list_length(&source_p->localClient->acceptlist) >=
          ConfigFileEntry.max_accept)
      {
        sendto_one(source_p, form_str(ERR_ACCEPTFULL),
                   me.name, source_p->name);
        return;
      }

      nuh.nuhmask  = mask;
      nuh.nickptr  = nick;
      nuh.userptr  = user;
      nuh.hostptr  = host;

      nuh.nicksize = sizeof(nick);
      nuh.usersize = sizeof(user);
      nuh.hostsize = sizeof(host);

      split_nuh(&nuh);

      if ((accept_p = find_accept(nick, user, host, source_p, 0)) != NULL)
      {
        sendto_one(source_p, form_str(ERR_ACCEPTEXIST),
                   me.name, source_p->name, nick, user, host);
        continue;
      }

      add_accept(&nuh, source_p);
    }
  }
}

static struct Message accept_msgtab = {
  "ACCEPT", 0, 0, 0, MAXPARA, MFLG_SLOW, 0,
  { m_unregistered, m_accept, m_ignore, m_ignore, m_accept, m_ignore }
};

static void
module_init(void)
{
  mod_add_cmd(&accept_msgtab);
}

static void
module_exit(void)
{
  mod_del_cmd(&accept_msgtab);
}

struct module module_entry = {
  .node    = { NULL, NULL, NULL },
  .name    = NULL,
  .version = "$Revision$",
  .handle  = NULL,
  .modinit = module_init,
  .modexit = module_exit,
  .flags   = 0
};
Revision:	1230
Committed:	Thu Sep 22 19:41:19 2011 UTC (15 years ago) by michael
Content type:	text/x-csrc
Original Path:	*ircd-hybrid-8/modules/m_accept.c*
File size:	6206 byte(s)
Log Message:	- cleanup module loader. Make module api more flexible
#	Content
1	/*
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 m_accept.c
23	* \brief Includes required functions for processing the ACCEPT command.
24	* \version $Id$
25	*/
26
27	#include "stdinc.h"
28	#include "handlers.h"
29	#include "client.h"
30	#include "irc_string.h"
31	#include "sprintf_irc.h"
32	#include "ircd.h"
33	#include "list.h"
34	#include "numeric.h"
35	#include "s_conf.h"
36	#include "s_serv.h"
37	#include "send.h"
38	#include "msg.h"
39	#include "parse.h"
40	#include "modules.h"
41
42
43	/*! \brief Creates and sends a list of nick!user\@host masks a Client
44	* has on its acceptlist.
45	*
46	* \param source_p The actual Client the list will be sent to.
47	*/
48	static void
49	list_accepts(struct Client *source_p)
50	{
51	int len = 0;
52	char nicks[IRCD_BUFSIZE] = { '\0' };
53	char *t = nicks;
54	const dlink_node *ptr = NULL;
55
56	len = strlen(me.name) + strlen(source_p->name) + 12;
57
58	DLINK_FOREACH(ptr, source_p->localClient->acceptlist.head)
59	{
60	const struct split_nuh_item *accept_p = ptr->data;
61	size_t masklen = strlen(accept_p->nickptr) +
62	strlen(accept_p->userptr) +
63	strlen(accept_p->hostptr) + 2 /* !@ */ ;
64
65	if ((t - nicks) + masklen + len > IRCD_BUFSIZE)
66	{
67	*(t - 1) = '\0';
68	sendto_one(source_p, form_str(RPL_ACCEPTLIST),
69	me.name, source_p->name, nicks);
70	t = nicks;
71	}
72
73	t += ircsprintf(t, "%s!%s@%s ",
74	accept_p->nickptr,
75	accept_p->userptr, accept_p->hostptr);
76	}
77
78	if (nicks[0] != '\0')
79	{
80	*(t - 1) = '\0';
81	sendto_one(source_p, form_str(RPL_ACCEPTLIST),
82	me.name, source_p->name, nicks);
83	}
84
85	sendto_one(source_p, form_str(RPL_ENDOFACCEPT),
86	me.name, source_p->name);
87	}
88
89	/*! \brief Allocates and adds a split_nuh_item holding a nick!user\@host
90	* mask to a Client's acceptlist.
91	*
92	* \param nuh A split_nuh_item already prepared with required masks.
93	* \param source_p The actual Client the new accept is added to.
94	*/
95	static void
96	add_accept(const struct split_nuh_item nuh, struct Client source_p)
97	{
98	struct split_nuh_item accept_p = MyMalloc(sizeof(accept_p));
99
100	DupString(accept_p->nickptr, nuh->nickptr);
101	DupString(accept_p->userptr, nuh->userptr);
102	DupString(accept_p->hostptr, nuh->hostptr);
103
104	dlinkAdd(accept_p, &accept_p->node, &source_p->localClient->acceptlist);
105
106	list_accepts(source_p);
107	}
108
109	/*! \brief ACCEPT command handler
110	*
111	* \param client_p Pointer to allocated Client struct with physical connection
112	* to this server, i.e. with an open socket connected.
113	* \param source_p Pointer to allocated Client struct from which the message
114	* originally comes from. This can be a local or remote client.
115	* \param parc Integer holding the number of supplied arguments.
116	* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL
117	* pointers.
118	* \note Valid arguments for this command are:
119	* - parv[0] = sender prefix
120	* - parv[1] = list of masks to be accepted or removed (optional)
121	*/
122	static void
123	m_accept(struct Client client_p, struct Client source_p,
124	int parc, char *parv[])
125	{
126	char *mask = NULL;
127	char *p = NULL;
128	char nick[NICKLEN + 1];
129	char user[USERLEN + 1];
130	char host[HOSTLEN + 1];
131	struct split_nuh_item nuh;
132	struct split_nuh_item *accept_p = NULL;
133
134	if (EmptyString(parv[1]) \|\| !irccmp(parv[1], "*"))
135	{
136	list_accepts(source_p);
137	return;
138	}
139
140	for (mask = strtoken(&p, parv[1], ","); mask != NULL;
141	mask = strtoken(&p, NULL, ","))
142	{
143	if (mask == '-' && ++mask != '\0')
144	{
145	nuh.nuhmask = mask;
146	nuh.nickptr = nick;
147	nuh.userptr = user;
148	nuh.hostptr = host;
149
150	nuh.nicksize = sizeof(nick);
151	nuh.usersize = sizeof(user);
152	nuh.hostsize = sizeof(host);
153
154	split_nuh(&nuh);
155
156	if ((accept_p = find_accept(nick, user, host, source_p, 0)) == NULL)
157	{
158	sendto_one(source_p, form_str(ERR_ACCEPTNOT),
159	me.name, source_p->name, nick, user, host);
160	continue;
161	}
162
163	del_accept(accept_p, source_p);
164	}
165	else if (*mask != '\0')
166	{
167	if (dlink_list_length(&source_p->localClient->acceptlist) >=
168	ConfigFileEntry.max_accept)
169	{
170	sendto_one(source_p, form_str(ERR_ACCEPTFULL),
171	me.name, source_p->name);
172	return;
173	}
174
175	nuh.nuhmask = mask;
176	nuh.nickptr = nick;
177	nuh.userptr = user;
178	nuh.hostptr = host;
179
180	nuh.nicksize = sizeof(nick);
181	nuh.usersize = sizeof(user);
182	nuh.hostsize = sizeof(host);
183
184	split_nuh(&nuh);
185
186	if ((accept_p = find_accept(nick, user, host, source_p, 0)) != NULL)
187	{
188	sendto_one(source_p, form_str(ERR_ACCEPTEXIST),
189	me.name, source_p->name, nick, user, host);
190	continue;
191	}
192
193	add_accept(&nuh, source_p);
194	}
195	}
196	}
197
198	static struct Message accept_msgtab = {
199	"ACCEPT", 0, 0, 0, MAXPARA, MFLG_SLOW, 0,
200	{ m_unregistered, m_accept, m_ignore, m_ignore, m_accept, m_ignore }
201	};
202
203	static void
204	module_init(void)
205	{
206	mod_add_cmd(&accept_msgtab);
207	}
208
209	static void
210	module_exit(void)
211	{
212	mod_del_cmd(&accept_msgtab);
213	}
214
215	struct module module_entry = {
216	.node = { NULL, NULL, NULL },
217	.name = NULL,
218	.version = "$Revision$",
219	.handle = NULL,
220	.modinit = module_init,
221	.modexit = module_exit,
222	.flags = 0
223	};