ircd-hybrid-8/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"

static void m_accept(struct Client *, struct Client *, int, char *[]);

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

#ifndef STATIC_MODULES
void
_modinit(void)
{
  mod_add_cmd(&accept_msgtab);
}

void
_moddeinit(void)
{
  mod_del_cmd(&accept_msgtab);
}

const char *_version = "$Revision$";
#endif


/*! \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);
    }
  }
}
Revision:	1028
Committed:	Sun Nov 8 13:03:38 2009 UTC (16 years, 8 months ago) by michael
Content type:	text/x-csrc
Original Path:	*ircd-hybrid/modules/m_accept.c*
File size:	6114 byte(s)
Log Message:	- move ircd-hybrid-7.2 to trunk
#	User	Rev	Content
1	adx	30	/*
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	michael	1007	/*! \file m_accept.c
23			* \brief Includes required functions for processing the ACCEPT command.
24			* \version $Id$
25			*/
26
27	adx	30	#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			static void m_accept(struct Client , struct Client , int, char *[]);
43
44			struct Message accept_msgtab = {
45			"ACCEPT", 0, 0, 0, 0, MFLG_SLOW, 0,
46	michael	887	{ m_unregistered, m_accept, m_ignore, m_ignore, m_accept, m_ignore }
47	adx	30	};
48
49			#ifndef STATIC_MODULES
50			void
51			_modinit(void)
52			{
53			mod_add_cmd(&accept_msgtab);
54			}
55
56			void
57			_moddeinit(void)
58			{
59			mod_del_cmd(&accept_msgtab);
60			}
61
62	knight	31	const char *_version = "$Revision$";
63	adx	30	#endif
64
65	michael	887
66	michael	1007	/*! \brief Creates and sends a list of nick!user\@host masks a Client
67			* has on its acceptlist.
68	michael	887	*
69	michael	1007	* \param source_p The actual Client the list will be sent to.
70	adx	30	*/
71			static void
72	michael	1007	list_accepts(struct Client *source_p)
73			{
74			int len = 0;
75			char nicks[IRCD_BUFSIZE] = { '\0' };
76			char *t = nicks;
77			const dlink_node *ptr = NULL;
78
79			len = strlen(me.name) + strlen(source_p->name) + 12;
80
81			DLINK_FOREACH(ptr, source_p->localClient->acceptlist.head)
82			{
83			const struct split_nuh_item *accept_p = ptr->data;
84			size_t masklen = strlen(accept_p->nickptr) +
85			strlen(accept_p->userptr) +
86			strlen(accept_p->hostptr) + 2 /* !@ */ ;
87
88			if ((t - nicks) + masklen + len > IRCD_BUFSIZE)
89			{
90			*(t - 1) = '\0';
91			sendto_one(source_p, form_str(RPL_ACCEPTLIST),
92			me.name, source_p->name, nicks);
93			t = nicks;
94			}
95
96			t += ircsprintf(t, "%s!%s@%s ",
97			accept_p->nickptr,
98			accept_p->userptr, accept_p->hostptr);
99			}
100
101			if (nicks[0] != '\0')
102			{
103			*(t - 1) = '\0';
104			sendto_one(source_p, form_str(RPL_ACCEPTLIST),
105			me.name, source_p->name, nicks);
106			}
107
108			sendto_one(source_p, form_str(RPL_ENDOFACCEPT),
109			me.name, source_p->name);
110			}
111
112			/*! \brief Allocates and adds a split_nuh_item holding a nick!user\@host
113			* mask to a Client's acceptlist.
114			*
115			* \param nuh A split_nuh_item already prepared with required masks.
116			* \param source_p The actual Client the new accept is added to.
117			*/
118			static void
119	michael	887	add_accept(const struct split_nuh_item nuh, struct Client source_p)
120			{
121			struct split_nuh_item accept_p = MyMalloc(sizeof(accept_p));
122
123			DupString(accept_p->nickptr, nuh->nickptr);
124			DupString(accept_p->userptr, nuh->userptr);
125			DupString(accept_p->hostptr, nuh->hostptr);
126
127			dlinkAdd(accept_p, &accept_p->node, &source_p->localClient->acceptlist);
128
129			list_accepts(source_p);
130			}
131
132			/*! \brief ACCEPT command handler
133			*
134			* \param client_p Pointer to allocated Client struct with physical connection
135			* to this server, i.e. with an open socket connected.
136			* \param source_p Pointer to allocated Client struct from which the message
137			* originally comes from. This can be a local or remote client.
138			* \param parc Integer holding the number of supplied arguments.
139			* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL
140			* pointers.
141			* \note Valid arguments for this command are:
142			* - parv[0] = sender prefix
143			* - parv[1] = list of masks to be accepted or removed (optional)
144			*/
145			static void
146	adx	30	m_accept(struct Client client_p, struct Client source_p,
147			int parc, char *parv[])
148			{
149	michael	887	char *mask = NULL;
150	adx	30	char *p = NULL;
151	michael	887	char nick[NICKLEN + 1];
152			char user[USERLEN + 1];
153			char host[HOSTLEN + 1];
154			struct split_nuh_item nuh;
155			struct split_nuh_item *accept_p = NULL;
156
157			if (EmptyString(parv[1]) \|\| !irccmp(parv[1], "*"))
158	adx	30	{
159			list_accepts(source_p);
160			return;
161			}
162
163	michael	887	for (mask = strtoken(&p, parv[1], ","); mask != NULL;
164			mask = strtoken(&p, NULL, ","))
165	adx	30	{
166	michael	887	if (mask == '-' && ++mask != '\0')
167	adx	30	{
168	michael	887	nuh.nuhmask = mask;
169			nuh.nickptr = nick;
170			nuh.userptr = user;
171			nuh.hostptr = host;
172	adx	30
173	michael	887	nuh.nicksize = sizeof(nick);
174			nuh.usersize = sizeof(user);
175			nuh.hostsize = sizeof(host);
176	adx	30
177	michael	887	split_nuh(&nuh);
178	adx	30
179	michael	887	if ((accept_p = find_accept(nick, user, host, source_p, 0)) == NULL)
180			{
181			sendto_one(source_p, form_str(ERR_ACCEPTNOT),
182			me.name, source_p->name, nick, user, host);
183			continue;
184			}
185	adx	30
186	michael	887	del_accept(accept_p, source_p);
187	adx	30	}
188	michael	887	else if (*mask != '\0')
189	adx	30	{
190	michael	887	if (dlink_list_length(&source_p->localClient->acceptlist) >=
191			ConfigFileEntry.max_accept)
192			{
193			sendto_one(source_p, form_str(ERR_ACCEPTFULL),
194			me.name, source_p->name);
195			return;
196			}
197	adx	30
198	michael	887	nuh.nuhmask = mask;
199			nuh.nickptr = nick;
200			nuh.userptr = user;
201			nuh.hostptr = host;
202	adx	30
203	michael	887	nuh.nicksize = sizeof(nick);
204			nuh.usersize = sizeof(user);
205			nuh.hostsize = sizeof(host);
206	adx	30
207	michael	887	split_nuh(&nuh);
208	adx	30
209	michael	887	if ((accept_p = find_accept(nick, user, host, source_p, 0)) != NULL)
210			{
211			sendto_one(source_p, form_str(ERR_ACCEPTEXIST),
212			me.name, source_p->name, nick, user, host);
213			continue;
214			}
215
216			add_accept(&nuh, source_p);
217	adx	30	}
218			}
219			}