ircd-hybrid/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 "ircd.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 add_accept(char *, char *, char *, struct Client *);
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


/*! \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[])
{
  struct Accept *accept = NULL;
  char *mask, *nick, *user, *host;
  char first, *p = NULL;

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

  for (mask = strtoken(&p, parv[1], ","), first = YES; mask != NULL;
       mask = strtoken(&p,    NULL, ","), first = NO)
  {
    if (*mask == '-' && *++mask != '\0')
    {
      split_nuh(mask, &nick, &user, &host);

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

      del_accept(accept, source_p);

      MyFree(nick);
      MyFree(user);
      MyFree(host);
    }
    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;
      }

      split_nuh(mask, &nick, &user, &host);

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

/* 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(char *nick, char *user, char *host, struct Client *source_p)
{
  struct Accept *accept = MyMalloc(sizeof(*accept));

  accept->nick = nick;
  accept->user = user;
  accept->host = host;

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

  list_accepts(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)
{
  struct Accept *accept;
  int len = 0;
  char nuh_list[IRCD_BUFSIZE] = { '\0' };
  char *t;
  const dlink_node *ptr = NULL;

  len = ircsprintf(nuh_list, form_str(RPL_ACCEPTLIST), me.name,
    source_p->name);
  t = nuh_list + len;

  DLINK_FOREACH(ptr, source_p->localClient->acceptlist.head)
  {
    accept = ptr->data;

    if ((t - nuh_list) + (strlen(accept->nick) + 1 + strlen(accept->user) + 1 +
        strlen(accept->host)) > IRCD_BUFSIZE)
    {
      *(t - 1) = '\0';
      sendto_one(source_p, "%s", nuh_list);
      t = nuh_list + len;
    }

    t += ircsprintf(t, "%s!%s@%s ",
                    accept->nick, accept->user, accept->host);
  }

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

  sendto_one(source_p, form_str(RPL_ENDOFACCEPT),
             me.name, source_p->name);
}
Revision:	345
Committed:	Sat Dec 31 11:50:01 2005 UTC (20 years, 7 months ago) by michael
Content type:	text/x-csrc
File size:	5618 byte(s)
Log Message:	- Continue doxyfying modules
#	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 "ircd.h"
29			#include "numeric.h"
30			#include "s_conf.h"
31			#include "s_serv.h"
32			#include "send.h"
33			#include "msg.h"
34			#include "parse.h"
35			#include "s_user.h"
36			#include "modules.h"
37
38			static void m_accept(struct Client , struct Client , int, char *[]);
39	db	241	static void add_accept(char , char , char , struct Client );
40	adx	30	static void list_accepts(struct Client *);
41
42			struct Message accept_msgtab = {
43	michael	235	"ACCEPT", 0, 0, 0, 0, MFLG_SLOW, 0,
44			{ m_unregistered, m_accept, m_ignore, m_ignore, m_accept, m_ignore }
45	adx	30	};
46
47			#ifndef STATIC_MODULES
48			void
49			_modinit(void)
50			{
51			mod_add_cmd(&accept_msgtab);
52			}
53
54			void
55			_moddeinit(void)
56			{
57			mod_del_cmd(&accept_msgtab);
58			}
59
60	knight	31	const char *_version = "$Revision$";
61	adx	30	#endif
62
63	michael	345
64			/*! \brief ACCEPT command handler
65			*
66			* \param client_p Pointer to allocated Client struct with physical connection
67			* to this server, i.e. with an open socket connected.
68			* \param source_p Pointer to allocated Client struct from which the message
69			* originally comes from. This can be a local or remote client.
70			* \param parc Integer holding the number of supplied arguments.
71			* \param parv Argument vector where parv[0] .. parv[parc-1] are non-NULL
72			* pointers.
73			* \note Valid arguments for this command are:
74			* - parv[0] = sender prefix
75			* - parv[1] = list of masks to be accepted or removed (optional)
76	adx	30	*/
77			static void
78			m_accept(struct Client client_p, struct Client source_p,
79			int parc, char *parv[])
80			{
81	michael	235	struct Accept *accept = NULL;
82	db	232	char mask, nick, user, host;
83	adx	271	char first, *p = NULL;
84	michael	240
85	adx	271	if (EmptyString(parv[1]) \|\| !irccmp(parv[1], "*"))
86	adx	30	{
87			list_accepts(source_p);
88			return;
89			}
90
91	adx	271	for (mask = strtoken(&p, parv[1], ","), first = YES; mask != NULL;
92			mask = strtoken(&p, NULL, ","), first = NO)
93	adx	30	{
94	michael	239	if (mask == '-' && ++mask != '\0')
95	adx	30	{
96	michael	239	split_nuh(mask, &nick, &user, &host);
97	adx	30
98	michael	239	if ((accept = find_accept(nick, user, host, source_p, 0)) == NULL)
99			{
100	adx	271	if (first)
101			sendto_one(source_p, form_str(ERR_ACCEPTNOT),
102			me.name, source_p->name, nick, user, host);
103	michael	239	MyFree(nick);
104			MyFree(user);
105			MyFree(host);
106			continue;
107			}
108	michael	235
109	michael	239	del_accept(accept, source_p);
110	adx	30
111	michael	235	MyFree(nick);
112			MyFree(user);
113			MyFree(host);
114	adx	30	}
115	michael	239	else if (*mask != '\0')
116			{
117	db	241	if (dlink_list_length(&source_p->localClient->acceptlist) >=
118			ConfigFileEntry.max_accept)
119			{
120			sendto_one(source_p, form_str(ERR_ACCEPTFULL),
121			me.name, source_p->name);
122	adx	271	return;
123	db	241	}
124
125	michael	239	split_nuh(mask, &nick, &user, &host);
126	adx	30
127	michael	239	if ((accept = find_accept(nick, user, host, source_p, 0)) != NULL)
128			{
129	adx	271	if (first)
130			sendto_one(source_p, form_str(ERR_ACCEPTEXIST),
131			me.name, source_p->name, nick, user, host);
132	michael	239	MyFree(nick);
133			MyFree(user);
134			MyFree(host);
135			continue;
136			}
137			add_accept(nick, user, host, source_p);
138	adx	30	}
139			}
140			}
141
142			/* add_accept()
143			*
144	db	241	* input - pointer to preallocated nick
145			* - pointer to preallocated username
146			* - pointer to preallocated host
147	db	232	* - pointer to client to add to acceptlist
148	adx	30	* output - none
149			* side effects - target is added to clients list
150			*/
151			static void
152	db	241	add_accept(char nick, char user, char host, struct Client source_p)
153	adx	30	{
154	michael	235	struct Accept accept = MyMalloc(sizeof(accept));
155
156	db	241	accept->nick = nick;
157			accept->user = user;
158			accept->host = host;
159	michael	235
160	db	232	dlinkAdd(accept, &accept->node, &source_p->localClient->acceptlist);
161
162	adx	30	list_accepts(source_p);
163			}
164
165			/* list_accepts()
166			*
167			* input - pointer to client
168			* output - none
169			* side effects - print accept list to client
170			*/
171			static void
172			list_accepts(struct Client *source_p)
173			{
174	db	232	struct Accept *accept;
175	adx	30	int len = 0;
176	db	232	char nuh_list[IRCD_BUFSIZE] = { '\0' };
177	adx	271	char *t;
178	adx	30	const dlink_node *ptr = NULL;
179
180	adx	271	len = ircsprintf(nuh_list, form_str(RPL_ACCEPTLIST), me.name,
181			source_p->name);
182			t = nuh_list + len;
183	adx	30
184	db	232	DLINK_FOREACH(ptr, source_p->localClient->acceptlist.head)
185	adx	30	{
186	db	232	accept = ptr->data;
187	adx	30
188	adx	271	if ((t - nuh_list) + (strlen(accept->nick) + 1 + strlen(accept->user) + 1 +
189			strlen(accept->host)) > IRCD_BUFSIZE)
190	adx	30	{
191			*(t - 1) = '\0';
192	adx	271	sendto_one(source_p, "%s", nuh_list);
193			t = nuh_list + len;
194	adx	30	}
195
196	db	232	t += ircsprintf(t, "%s!%s@%s ",
197	michael	235	accept->nick, accept->user, accept->host);
198	adx	30	}
199
200	adx	271	if (t - nuh_list > len)
201	adx	30	{
202			*(t - 1) = '\0';
203			sendto_one(source_p, form_str(RPL_ACCEPTLIST),
204	db	232	me.name, source_p->name, nuh_list);
205	adx	30	}
206
207			sendto_one(source_p, form_str(RPL_ENDOFACCEPT),
208			me.name, source_p->name);
209			}