ircd-hybrid-7.3/modules/m_accept.c

/*
 *  ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
 *  m_accept.c: Allows a user to talk to a +g user.
 *
 *  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
 *
 *  $Id$
 */

#include "stdinc.h"
#include "handlers.h"
#include "client.h"
#include "irc_string.h"
#include "sprintf_irc.h"
#include "hash.h"       /* for find_client() */
#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 "s_user.h"
#include "modules.h"

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

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


/* add_accept()
 *
 * input        - pointer to preallocated nick
 *              - pointer to preallocated username
 *              - pointer to preallocated host
 *              - pointer to client to add to acceptlist
 * output       - none
 * side effects - target is added to clients list
 */
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);
    }
  }
}

/* list_accepts()
 *
 * input        - pointer to client
 * output       - none
 * side effects - print accept list to client
 */
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);
}
Revision:	887
Committed:	Thu Nov 1 11:54:48 2007 UTC (18 years, 11 months ago) by michael
Content type:	text/x-csrc
Original Path:	*ircd-hybrid-7.2/modules/m_accept.c*
File size:	6154 byte(s)
Log Message:	- Backported new ACCEPT code which adds support for n!u@h masks
#	User	Rev	Content
1	adx	30	/*
2			* ircd-hybrid: an advanced Internet Relay Chat Daemon(ircd).
3			* m_accept.c: Allows a user to talk to a +g user.
4			*
5			* Copyright (C) 2002 by the past and present ircd coders, and others.
6			*
7			* This program is free software; you can redistribute it and/or modify
8			* it under the terms of the GNU General Public License as published by
9			* the Free Software Foundation; either version 2 of the License, or
10			* (at your option) any later version.
11			*
12			* This program is distributed in the hope that it will be useful,
13			* but WITHOUT ANY WARRANTY; without even the implied warranty of
14			* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15			* GNU General Public License for more details.
16			*
17			* You should have received a copy of the GNU General Public License
18			* along with this program; if not, write to the Free Software
19			* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
20			* USA
21			*
22	knight	31	* $Id$
23	adx	30	*/
24
25			#include "stdinc.h"
26			#include "handlers.h"
27			#include "client.h"
28			#include "irc_string.h"
29			#include "sprintf_irc.h"
30			#include "hash.h" /* for find_client() */
31			#include "ircd.h"
32			#include "list.h"
33			#include "numeric.h"
34			#include "s_conf.h"
35			#include "s_serv.h"
36			#include "send.h"
37			#include "msg.h"
38			#include "parse.h"
39			#include "s_user.h"
40			#include "modules.h"
41
42			static void m_accept(struct Client , struct Client , int, char *[]);
43			static void list_accepts(struct Client *);
44
45			struct Message accept_msgtab = {
46			"ACCEPT", 0, 0, 0, 0, MFLG_SLOW, 0,
47	michael	887	{ m_unregistered, m_accept, m_ignore, m_ignore, m_accept, m_ignore }
48	adx	30	};
49
50			#ifndef STATIC_MODULES
51			void
52			_modinit(void)
53			{
54			mod_add_cmd(&accept_msgtab);
55			}
56
57			void
58			_moddeinit(void)
59			{
60			mod_del_cmd(&accept_msgtab);
61			}
62
63	knight	31	const char *_version = "$Revision$";
64	adx	30	#endif
65
66	michael	887
67			/* add_accept()
68			*
69			* input - pointer to preallocated nick
70			* - pointer to preallocated username
71			* - pointer to preallocated host
72			* - pointer to client to add to acceptlist
73			* output - none
74			* side effects - target is added to clients list
75	adx	30	*/
76			static void
77	michael	887	add_accept(const struct split_nuh_item nuh, struct Client source_p)
78			{
79			struct split_nuh_item accept_p = MyMalloc(sizeof(accept_p));
80
81			DupString(accept_p->nickptr, nuh->nickptr);
82			DupString(accept_p->userptr, nuh->userptr);
83			DupString(accept_p->hostptr, nuh->hostptr);
84
85			dlinkAdd(accept_p, &accept_p->node, &source_p->localClient->acceptlist);
86
87			list_accepts(source_p);
88			}
89
90			/*! \brief ACCEPT command handler
91			*
92			* \param client_p Pointer to allocated Client struct with physical connection
93			* to this server, i.e. with an open socket connected.
94			* \param source_p Pointer to allocated Client struct from which the message
95			* originally comes from. This can be a local or remote client.
96			* \param parc Integer holding the number of supplied arguments.
97			* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL
98			* pointers.
99			* \note Valid arguments for this command are:
100			* - parv[0] = sender prefix
101			* - parv[1] = list of masks to be accepted or removed (optional)
102			*/
103			static void
104	adx	30	m_accept(struct Client client_p, struct Client source_p,
105			int parc, char *parv[])
106			{
107	michael	887	char *mask = NULL;
108	adx	30	char *p = NULL;
109	michael	887	char nick[NICKLEN + 1];
110			char user[USERLEN + 1];
111			char host[HOSTLEN + 1];
112			struct split_nuh_item nuh;
113			struct split_nuh_item *accept_p = NULL;
114
115			if (EmptyString(parv[1]) \|\| !irccmp(parv[1], "*"))
116	adx	30	{
117			list_accepts(source_p);
118			return;
119			}
120
121	michael	887	for (mask = strtoken(&p, parv[1], ","); mask != NULL;
122			mask = strtoken(&p, NULL, ","))
123	adx	30	{
124	michael	887	if (mask == '-' && ++mask != '\0')
125	adx	30	{
126	michael	887	nuh.nuhmask = mask;
127			nuh.nickptr = nick;
128			nuh.userptr = user;
129			nuh.hostptr = host;
130	adx	30
131	michael	887	nuh.nicksize = sizeof(nick);
132			nuh.usersize = sizeof(user);
133			nuh.hostsize = sizeof(host);
134	adx	30
135	michael	887	split_nuh(&nuh);
136	adx	30
137	michael	887	if ((accept_p = find_accept(nick, user, host, source_p, 0)) == NULL)
138			{
139			sendto_one(source_p, form_str(ERR_ACCEPTNOT),
140			me.name, source_p->name, nick, user, host);
141			continue;
142			}
143	adx	30
144	michael	887	del_accept(accept_p, source_p);
145	adx	30	}
146	michael	887	else if (*mask != '\0')
147	adx	30	{
148	michael	887	if (dlink_list_length(&source_p->localClient->acceptlist) >=
149			ConfigFileEntry.max_accept)
150			{
151			sendto_one(source_p, form_str(ERR_ACCEPTFULL),
152			me.name, source_p->name);
153			return;
154			}
155	adx	30
156	michael	887	nuh.nuhmask = mask;
157			nuh.nickptr = nick;
158			nuh.userptr = user;
159			nuh.hostptr = host;
160	adx	30
161	michael	887	nuh.nicksize = sizeof(nick);
162			nuh.usersize = sizeof(user);
163			nuh.hostsize = sizeof(host);
164	adx	30
165	michael	887	split_nuh(&nuh);
166	adx	30
167	michael	887	if ((accept_p = find_accept(nick, user, host, source_p, 0)) != NULL)
168			{
169			sendto_one(source_p, form_str(ERR_ACCEPTEXIST),
170			me.name, source_p->name, nick, user, host);
171			continue;
172			}
173
174			add_accept(&nuh, source_p);
175	adx	30	}
176			}
177			}
178
179			/* list_accepts()
180			*
181			* input - pointer to client
182			* output - none
183			* side effects - print accept list to client
184			*/
185			static void
186			list_accepts(struct Client *source_p)
187			{
188			int len = 0;
189			char nicks[IRCD_BUFSIZE] = { '\0' };
190			char *t = nicks;
191			const dlink_node *ptr = NULL;
192
193			len = strlen(me.name) + strlen(source_p->name) + 12;
194
195	michael	887	DLINK_FOREACH(ptr, source_p->localClient->acceptlist.head)
196	adx	30	{
197	michael	887	const struct split_nuh_item *accept_p = ptr->data;
198			size_t masklen = strlen(accept_p->nickptr) +
199			strlen(accept_p->userptr) +
200			strlen(accept_p->hostptr) + 2 /* !@ */ ;
201	adx	30
202	michael	887	if ((t - nicks) + masklen + len > IRCD_BUFSIZE)
203	adx	30	{
204			*(t - 1) = '\0';
205			sendto_one(source_p, form_str(RPL_ACCEPTLIST),
206			me.name, source_p->name, nicks);
207			t = nicks;
208			}
209
210	michael	887	t += ircsprintf(t, "%s!%s@%s ",
211			accept_p->nickptr,
212			accept_p->userptr, accept_p->hostptr);
213	adx	30	}
214
215			if (nicks[0] != '\0')
216			{
217			*(t - 1) = '\0';
218			sendto_one(source_p, form_str(RPL_ACCEPTLIST),
219			me.name, source_p->name, nicks);
220			}
221
222			sendto_one(source_p, form_str(RPL_ENDOFACCEPT),
223			me.name, source_p->name);
224			}