trunk/modules/m_accept.c

/*
 *  ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
 *
 *  Copyright (c) 2000-2014 ircd-hybrid development team
 *
 *  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 "client.h"
#include "irc_string.h"
#include "ircd.h"
#include "list.h"
#include "numeric.h"
#include "conf.h"
#include "send.h"
#include "parse.h"
#include "modules.h"
#include "memory.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] = "";
  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_numeric(source_p, &me, RPL_ACCEPTLIST, nicks);
      t = nicks;
    }

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

  if (nicks[0])
  {
    *(t - 1) = '\0';
    sendto_one_numeric(source_p, &me, RPL_ACCEPTLIST, nicks);
  }

  sendto_one_numeric(source_p, &me, RPL_ENDOFACCEPT);
}

/*! \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));

  accept_p->nickptr = xstrdup(nuh->nickptr);
  accept_p->userptr = xstrdup(nuh->userptr);
  accept_p->hostptr = xstrdup(nuh->hostptr);

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

  list_accepts(source_p);
}

/*! \brief ACCEPT command handler
 *
 * \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] = command
 *      - parv[1] = comma-separated list of masks to be accepted or removed
 */
static int
m_accept(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 0;
  }

  for (mask = strtoken(&p, parv[1], ","); mask;
       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, irccmp)) == NULL)
      {
        sendto_one_numeric(source_p, &me, ERR_ACCEPTNOT, 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_numeric(source_p, &me, ERR_ACCEPTFULL);
        return 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, irccmp)))
      {
        sendto_one_numeric(source_p, &me, ERR_ACCEPTEXIST, nick, user, host);
        continue;
      }

      add_accept(&nuh, source_p);
    }
  }

  return 0;
}

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:	3300
Committed:	Sat Apr 12 18:26:22 2014 UTC (11 years, 4 months ago) by michael
Content type:	text/x-csrc
File size:	5718 byte(s)
Log Message:	- doxygen
#	Content
1	/*
2	* ircd-hybrid: an advanced, lightweight Internet Relay Chat Daemon (ircd)
3	*
4	* Copyright (c) 2000-2014 ircd-hybrid development team
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 "client.h"
29	#include "irc_string.h"
30	#include "ircd.h"
31	#include "list.h"
32	#include "numeric.h"
33	#include "conf.h"
34	#include "send.h"
35	#include "parse.h"
36	#include "modules.h"
37	#include "memory.h"
38
39
40	/*! \brief Creates and sends a list of nick!user\@host masks a Client
41	* has on its acceptlist.
42	*
43	* \param source_p The actual Client the list will be sent to.
44	*/
45	static void
46	list_accepts(struct Client *source_p)
47	{
48	int len = 0;
49	char nicks[IRCD_BUFSIZE] = "";
50	char *t = nicks;
51	const dlink_node *ptr = NULL;
52
53	len = strlen(me.name) + strlen(source_p->name) + 12;
54
55	DLINK_FOREACH(ptr, source_p->localClient->acceptlist.head)
56	{
57	const struct split_nuh_item *accept_p = ptr->data;
58	size_t masklen = strlen(accept_p->nickptr) +
59	strlen(accept_p->userptr) +
60	strlen(accept_p->hostptr) + 2 /* !@ */ ;
61
62	if ((t - nicks) + masklen + len > IRCD_BUFSIZE)
63	{
64	*(t - 1) = '\0';
65	sendto_one_numeric(source_p, &me, RPL_ACCEPTLIST, nicks);
66	t = nicks;
67	}
68
69	t += sprintf(t, "%s!%s@%s ",
70	accept_p->nickptr,
71	accept_p->userptr, accept_p->hostptr);
72	}
73
74	if (nicks[0])
75	{
76	*(t - 1) = '\0';
77	sendto_one_numeric(source_p, &me, RPL_ACCEPTLIST, nicks);
78	}
79
80	sendto_one_numeric(source_p, &me, RPL_ENDOFACCEPT);
81	}
82
83	/*! \brief Allocates and adds a split_nuh_item holding a nick!user\@host
84	* mask to a Client's acceptlist.
85	*
86	* \param nuh A split_nuh_item already prepared with required masks.
87	* \param source_p The actual Client the new accept is added to.
88	*/
89	static void
90	add_accept(const struct split_nuh_item nuh, struct Client source_p)
91	{
92	struct split_nuh_item accept_p = MyMalloc(sizeof(accept_p));
93
94	accept_p->nickptr = xstrdup(nuh->nickptr);
95	accept_p->userptr = xstrdup(nuh->userptr);
96	accept_p->hostptr = xstrdup(nuh->hostptr);
97
98	dlinkAdd(accept_p, &accept_p->node, &source_p->localClient->acceptlist);
99
100	list_accepts(source_p);
101	}
102
103	/*! \brief ACCEPT command handler
104	*
105	* \param source_p Pointer to allocated Client struct from which the message
106	* originally comes from. This can be a local or remote client.
107	* \param parc Integer holding the number of supplied arguments.
108	* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL
109	* pointers.
110	* \note Valid arguments for this command are:
111	* - parv[0] = command
112	* - parv[1] = comma-separated list of masks to be accepted or removed
113	*/
114	static int
115	m_accept(struct Client source_p, int parc, char parv[])
116	{
117	char *mask = NULL;
118	char *p = NULL;
119	char nick[NICKLEN + 1] = "";
120	char user[USERLEN + 1] = "";
121	char host[HOSTLEN + 1] = "";
122	struct split_nuh_item nuh;
123	struct split_nuh_item *accept_p = NULL;
124
125	if (EmptyString(parv[1]) \|\| !irccmp(parv[1], "*"))
126	{
127	list_accepts(source_p);
128	return 0;
129	}
130
131	for (mask = strtoken(&p, parv[1], ","); mask;
132	mask = strtoken(&p, NULL, ","))
133	{
134	if (mask == '-' && ++mask != '\0')
135	{
136	nuh.nuhmask = mask;
137	nuh.nickptr = nick;
138	nuh.userptr = user;
139	nuh.hostptr = host;
140
141	nuh.nicksize = sizeof(nick);
142	nuh.usersize = sizeof(user);
143	nuh.hostsize = sizeof(host);
144
145	split_nuh(&nuh);
146
147	if ((accept_p = find_accept(nick, user, host, source_p, irccmp)) == NULL)
148	{
149	sendto_one_numeric(source_p, &me, ERR_ACCEPTNOT, nick, user, host);
150	continue;
151	}
152
153	del_accept(accept_p, source_p);
154	}
155	else if (*mask != '\0')
156	{
157	if (dlink_list_length(&source_p->localClient->acceptlist) >=
158	ConfigFileEntry.max_accept)
159	{
160	sendto_one_numeric(source_p, &me, ERR_ACCEPTFULL);
161	return 0;
162	}
163
164	nuh.nuhmask = mask;
165	nuh.nickptr = nick;
166	nuh.userptr = user;
167	nuh.hostptr = host;
168
169	nuh.nicksize = sizeof(nick);
170	nuh.usersize = sizeof(user);
171	nuh.hostsize = sizeof(host);
172
173	split_nuh(&nuh);
174
175	if ((accept_p = find_accept(nick, user, host, source_p, irccmp)))
176	{
177	sendto_one_numeric(source_p, &me, ERR_ACCEPTEXIST, nick, user, host);
178	continue;
179	}
180
181	add_accept(&nuh, source_p);
182	}
183	}
184
185	return 0;
186	}
187
188	static struct Message accept_msgtab =
189	{
190	"ACCEPT", 0, 0, 0, MAXPARA, MFLG_SLOW, 0,
191	{ m_unregistered, m_accept, m_ignore, m_ignore, m_accept, m_ignore }
192	};
193
194	static void
195	module_init(void)
196	{
197	mod_add_cmd(&accept_msgtab);
198	}
199
200	static void
201	module_exit(void)
202	{
203	mod_del_cmd(&accept_msgtab);
204	}
205
206	struct module module_entry =
207	{
208	.node = { NULL, NULL, NULL },
209	.name = NULL,
210	.version = "$Revision$",
211	.handle = NULL,
212	.modinit = module_init,
213	.modexit = module_exit,
214	.flags = 0
215	};