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 "hash.h"       /* for find_client() */
#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 build_nuh_list(struct Client *, char *, char *, char *);
static void add_accept(const char *name, const char *username,
                       const char *host, struct Client *source_p);
static int del_accept(const char *name, const char *username,
                      const char *host, struct Client *source_p);
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

/*
 * m_accept - ACCEPT command handler
 *      parv[0] = sender prefix
 *      parv[1] = servername
 */
static void
m_accept(struct Client *client_p, struct Client *source_p,
         int parc, char *parv[])
{
  char *mask, *nick, *user, *host;
  char *p = NULL;
  char addbuf[IRCD_BUFSIZE] = { '\0' };
  char delbuf[IRCD_BUFSIZE] = { '\0' };
  int accept_num=0;
  
  if (parc < 2)
  {
    list_accepts(source_p);
    return;
  }

  build_nuh_list(source_p, addbuf, delbuf, parv[1]);

  /* parse the delete list */
  for (mask = strtoken(&p, delbuf, ","); mask != NULL;
       mask = strtoken(&p, NULL, ","))
  {
    /* user isn't on clients accept list */
    split_nuh(mask, &nick, &user, &host);
    if (!accept_message((const char *)nick, (const char *)user,
                        (const char *)host, NULL, source_p))
    {
      sendto_one(source_p, form_str(ERR_ACCEPTNOT),
                 me.name, source_p->name, nick, user, host);
      continue;
    }

    del_accept(nick, user, host, source_p);
  }

  /* get the number of accepts they have */ 
  accept_num = dlink_list_length(&source_p->localClient->acceptlist);

  /* parse the add list */
  for (mask = strtoken(&p, addbuf, ","); mask;
       mask = strtoken(&p, NULL, ","), accept_num++)
  {
     /* user is already on clients accept list */
    split_nuh(mask, &nick, &user, &host);

    if (accept_message(nick, user, host, NULL, source_p))
    {
      sendto_one(source_p, form_str(ERR_ACCEPTEXIST),
                 me.name, source_p->name, nick, user, host);
      continue;
    }

    if (accept_num >= ConfigFileEntry.max_accept)
    {
      sendto_one(source_p, form_str(ERR_ACCEPTFULL),
                 me.name, source_p->name);
      return;
    }

    add_accept(nick, user, host, source_p);
  }
}

/* build_nuh_list()
 *
 * input        - pointer to client
 *              - pointer to addbuffer
 *              - pointer to remove buffer
 *              - pointer to list of nicks
 *              - pointer to list of nicks!user@host
 * output       - 
 * side effects - addbuf/delbuf are modified to give valid masks
 */
static void
build_nuh_list(struct Client *source_p, char *addbuf,
               char *delbuf, char *masks)
{
  char *mask = NULL;
  char *p = NULL;
  int lenadd;
  int lendel;

  *addbuf = *delbuf = '\0';
  lenadd = lendel = 0;

  /* build list of nuh to add into addbuf, nuh to remove in delbuf */
  for (mask = strtoken(&p, masks, ","); mask; 
       mask = strtoken(&p, NULL, ","))
  {
    if (*mask == '-')
    {
      mask++;

      /* deleting a client */
      if (*delbuf)
        strcat(delbuf, ",");

      strncat(delbuf, mask, IRCD_BUFSIZE - lendel - 1);
      lendel += strlen(mask) + 1;
    }
    /* adding a client */
    else
    {
      if (*addbuf)
        strcat(addbuf, ",");
 
      strncat(addbuf, mask, IRCD_BUFSIZE - lenadd - 1);
      lenadd += strlen(mask) + 1;
    }
  }
}

/* add_accept()
 *
 * input        - nick
 *              - username
 *              - host
 *              - pointer to client to add to acceptlist
 * output       - none
 * side effects - target is added to clients list
 */
static void
add_accept(const char *name, const char *username, const char *host,
           struct Client *source_p)
{
  struct Accept *accept;
  
  accept = MyMalloc(sizeof(struct Accept));
  DupString(accept->name, name);
  DupString(accept->username, username);
  DupString(accept->host, host);
  dlinkAdd(accept, &accept->node, &source_p->localClient->acceptlist);

  list_accepts(source_p);
}

/* del_accept()
 *
 * input        - nick
 *              - username
 *              - host
 *              - pointer to client to add to acceptlist
 * output       - 1 if found and removed 0 if not found and nothing removed
 * side effects - mask is removed from acceptlist of given client if found
 */
static int
del_accept(const char *name, const char *username, const char *host,
           struct Client *client_p)
{
  struct Accept *accept;
  dlink_node *ptr, *next_ptr;
  int found=0;

  DLINK_FOREACH_SAFE(ptr, next_ptr, client_p->localClient->acceptlist.head)
  {
    accept = ptr->data;
    if (match(accept->name, name) &&
        match(accept->username, username) &&
        match(accept->host, host))
    {
      MyFree(accept->name);
      MyFree(accept->username);
      MyFree(accept->host);
      dlinkDelete(ptr, &client_p->localClient->acceptlist);
      MyFree(accept);
      found = 1;        /* On the off chance, they have more than one */
    }
  }
  return(found);
}

/* 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 = nuh_list;
  const dlink_node *ptr = NULL;

  len = strlen(me.name) + strlen(source_p->name) + 12;

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

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

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

  if (nuh_list[0] != '\0')
  {
    *(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:	232
Committed:	Sat Nov 5 06:05:06 2005 UTC (18 years, 5 months ago) by db
Content type:	text/x-csrc
File size:	7296 byte(s)
Log Message:	- This commits the n!u@h accept code I'll tidy it up more later.
#	Content
1	/*
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	* $Id$
23	*/
24
25	#include "stdinc.h"
26	#include "handlers.h"
27	#include "client.h"
28	#include "hash.h" /* for find_client() */
29	#include "ircd.h"
30	#include "numeric.h"
31	#include "s_conf.h"
32	#include "s_serv.h"
33	#include "send.h"
34	#include "msg.h"
35	#include "parse.h"
36	#include "s_user.h"
37	#include "modules.h"
38
39	static void m_accept(struct Client , struct Client , int, char *[]);
40	static void build_nuh_list(struct Client , char , char , char );
41	static void add_accept(const char name, const char username,
42	const char host, struct Client source_p);
43	static int del_accept(const char name, const char username,
44	const char host, struct Client source_p);
45	static void list_accepts(struct Client *);
46
47	struct Message accept_msgtab = {
48	"ACCEPT", 0, 0, 0, 0, MFLG_SLOW, 0,
49	{m_unregistered, m_accept, m_ignore, m_ignore, m_accept, m_ignore}
50	};
51
52	#ifndef STATIC_MODULES
53	void
54	_modinit(void)
55	{
56	mod_add_cmd(&accept_msgtab);
57	}
58
59	void
60	_moddeinit(void)
61	{
62	mod_del_cmd(&accept_msgtab);
63	}
64
65	const char *_version = "$Revision$";
66	#endif
67
68	/*
69	* m_accept - ACCEPT command handler
70	* parv[0] = sender prefix
71	* parv[1] = servername
72	*/
73	static void
74	m_accept(struct Client client_p, struct Client source_p,
75	int parc, char *parv[])
76	{
77	char mask, nick, user, host;
78	char *p = NULL;
79	char addbuf[IRCD_BUFSIZE] = { '\0' };
80	char delbuf[IRCD_BUFSIZE] = { '\0' };
81	int accept_num=0;
82
83	if (parc < 2)
84	{
85	list_accepts(source_p);
86	return;
87	}
88
89	build_nuh_list(source_p, addbuf, delbuf, parv[1]);
90
91	/* parse the delete list */
92	for (mask = strtoken(&p, delbuf, ","); mask != NULL;
93	mask = strtoken(&p, NULL, ","))
94	{
95	/* user isn't on clients accept list */
96	split_nuh(mask, &nick, &user, &host);
97	if (!accept_message((const char )nick, (const char )user,
98	(const char *)host, NULL, source_p))
99	{
100	sendto_one(source_p, form_str(ERR_ACCEPTNOT),
101	me.name, source_p->name, nick, user, host);
102	continue;
103	}
104
105	del_accept(nick, user, host, source_p);
106	}
107
108	/* get the number of accepts they have */
109	accept_num = dlink_list_length(&source_p->localClient->acceptlist);
110
111	/* parse the add list */
112	for (mask = strtoken(&p, addbuf, ","); mask;
113	mask = strtoken(&p, NULL, ","), accept_num++)
114	{
115	/* user is already on clients accept list */
116	split_nuh(mask, &nick, &user, &host);
117
118	if (accept_message(nick, user, host, NULL, source_p))
119	{
120	sendto_one(source_p, form_str(ERR_ACCEPTEXIST),
121	me.name, source_p->name, nick, user, host);
122	continue;
123	}
124
125	if (accept_num >= ConfigFileEntry.max_accept)
126	{
127	sendto_one(source_p, form_str(ERR_ACCEPTFULL),
128	me.name, source_p->name);
129	return;
130	}
131
132	add_accept(nick, user, host, source_p);
133	}
134	}
135
136	/* build_nuh_list()
137	*
138	* input - pointer to client
139	* - pointer to addbuffer
140	* - pointer to remove buffer
141	* - pointer to list of nicks
142	* - pointer to list of nicks!user@host
143	* output -
144	* side effects - addbuf/delbuf are modified to give valid masks
145	*/
146	static void
147	build_nuh_list(struct Client source_p, char addbuf,
148	char delbuf, char masks)
149	{
150	char *mask = NULL;
151	char *p = NULL;
152	int lenadd;
153	int lendel;
154
155	addbuf = delbuf = '\0';
156	lenadd = lendel = 0;
157
158	/* build list of nuh to add into addbuf, nuh to remove in delbuf */
159	for (mask = strtoken(&p, masks, ","); mask;
160	mask = strtoken(&p, NULL, ","))
161	{
162	if (*mask == '-')
163	{
164	mask++;
165
166	/* deleting a client */
167	if (*delbuf)
168	strcat(delbuf, ",");
169
170	strncat(delbuf, mask, IRCD_BUFSIZE - lendel - 1);
171	lendel += strlen(mask) + 1;
172	}
173	/* adding a client */
174	else
175	{
176	if (*addbuf)
177	strcat(addbuf, ",");
178
179	strncat(addbuf, mask, IRCD_BUFSIZE - lenadd - 1);
180	lenadd += strlen(mask) + 1;
181	}
182	}
183	}
184
185	/* add_accept()
186	*
187	* input - nick
188	* - username
189	* - host
190	* - pointer to client to add to acceptlist
191	* output - none
192	* side effects - target is added to clients list
193	*/
194	static void
195	add_accept(const char name, const char username, const char *host,
196	struct Client *source_p)
197	{
198	struct Accept *accept;
199
200	accept = MyMalloc(sizeof(struct Accept));
201	DupString(accept->name, name);
202	DupString(accept->username, username);
203	DupString(accept->host, host);
204	dlinkAdd(accept, &accept->node, &source_p->localClient->acceptlist);
205
206	list_accepts(source_p);
207	}
208
209	/* del_accept()
210	*
211	* input - nick
212	* - username
213	* - host
214	* - pointer to client to add to acceptlist
215	* output - 1 if found and removed 0 if not found and nothing removed
216	* side effects - mask is removed from acceptlist of given client if found
217	*/
218	static int
219	del_accept(const char name, const char username, const char *host,
220	struct Client *client_p)
221	{
222	struct Accept *accept;
223	dlink_node ptr, next_ptr;
224	int found=0;
225
226	DLINK_FOREACH_SAFE(ptr, next_ptr, client_p->localClient->acceptlist.head)
227	{
228	accept = ptr->data;
229	if (match(accept->name, name) &&
230	match(accept->username, username) &&
231	match(accept->host, host))
232	{
233	MyFree(accept->name);
234	MyFree(accept->username);
235	MyFree(accept->host);
236	dlinkDelete(ptr, &client_p->localClient->acceptlist);
237	MyFree(accept);
238	found = 1; /* On the off chance, they have more than one */
239	}
240	}
241	return(found);
242	}
243
244	/* list_accepts()
245	*
246	* input - pointer to client
247	* output - none
248	* side effects - print accept list to client
249	*/
250	static void
251	list_accepts(struct Client *source_p)
252	{
253	struct Accept *accept;
254	int len = 0;
255	char nuh_list[IRCD_BUFSIZE] = { '\0' };
256	char *t = nuh_list;
257	const dlink_node *ptr = NULL;
258
259	len = strlen(me.name) + strlen(source_p->name) + 12;
260
261	DLINK_FOREACH(ptr, source_p->localClient->acceptlist.head)
262	{
263	accept = ptr->data;
264
265	if ((t - nuh_list) + strlen(source_p->name) + len > IRCD_BUFSIZE)
266	{
267	*(t - 1) = '\0';
268	sendto_one(source_p, form_str(RPL_ACCEPTLIST),
269	me.name, source_p->name, nuh_list);
270	t = nuh_list;
271	}
272
273	t += ircsprintf(t, "%s!%s@%s ",
274	accept->name, accept->username, accept->host);
275	}
276
277	if (nuh_list[0] != '\0')
278	{
279	*(t - 1) = '\0';
280	sendto_one(source_p, form_str(RPL_ACCEPTLIST),
281	me.name, source_p->name, nuh_list);
282	}
283
284	sendto_one(source_p, form_str(RPL_ENDOFACCEPT),
285	me.name, source_p->name);
286	}