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 (13 years, 11 months 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
#	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
43	michael	1007	/*! \brief Creates and sends a list of nick!user\@host masks a Client
44			* has on its acceptlist.
45	michael	887	*
46	michael	1007	* \param source_p The actual Client the list will be sent to.
47	adx	30	*/
48			static void
49	michael	1007	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	michael	887	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	adx	30	m_accept(struct Client client_p, struct Client source_p,
124			int parc, char *parv[])
125			{
126	michael	887	char *mask = NULL;
127	adx	30	char *p = NULL;
128	michael	887	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	adx	30	{
136			list_accepts(source_p);
137			return;
138			}
139
140	michael	887	for (mask = strtoken(&p, parv[1], ","); mask != NULL;
141			mask = strtoken(&p, NULL, ","))
142	adx	30	{
143	michael	887	if (mask == '-' && ++mask != '\0')
144	adx	30	{
145	michael	887	nuh.nuhmask = mask;
146			nuh.nickptr = nick;
147			nuh.userptr = user;
148			nuh.hostptr = host;
149	adx	30
150	michael	887	nuh.nicksize = sizeof(nick);
151			nuh.usersize = sizeof(user);
152			nuh.hostsize = sizeof(host);
153	adx	30
154	michael	887	split_nuh(&nuh);
155	adx	30
156	michael	887	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	adx	30
163	michael	887	del_accept(accept_p, source_p);
164	adx	30	}
165	michael	887	else if (*mask != '\0')
166	adx	30	{
167	michael	887	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	adx	30
175	michael	887	nuh.nuhmask = mask;
176			nuh.nickptr = nick;
177			nuh.userptr = user;
178			nuh.hostptr = host;
179	adx	30
180	michael	887	nuh.nicksize = sizeof(nick);
181			nuh.usersize = sizeof(user);
182			nuh.hostsize = sizeof(host);
183	adx	30
184	michael	887	split_nuh(&nuh);
185	adx	30
186	michael	887	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	adx	30	}
195			}
196			}
197	michael	1230
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			};