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 (20 years, 9 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.
#	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 "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	db	232	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	adx	30	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	knight	31	const char *_version = "$Revision$";
66	adx	30	#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	db	232	char mask, nick, user, host;
78	adx	30	char *p = NULL;
79			char addbuf[IRCD_BUFSIZE] = { '\0' };
80			char delbuf[IRCD_BUFSIZE] = { '\0' };
81	db	232	int accept_num=0;
82	adx	30
83	db	232	if (parc < 2)
84	adx	30	{
85			list_accepts(source_p);
86			return;
87			}
88
89	db	232	build_nuh_list(source_p, addbuf, delbuf, parv[1]);
90	adx	30
91			/* parse the delete list */
92	db	232	for (mask = strtoken(&p, delbuf, ","); mask != NULL;
93			mask = strtoken(&p, NULL, ","))
94	adx	30	{
95	db	232	/* 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	adx	30	{
100			sendto_one(source_p, form_str(ERR_ACCEPTNOT),
101	db	232	me.name, source_p->name, nick, user, host);
102	adx	30	continue;
103			}
104
105	db	232	del_accept(nick, user, host, source_p);
106	adx	30	}
107
108			/* get the number of accepts they have */
109	db	232	accept_num = dlink_list_length(&source_p->localClient->acceptlist);
110	adx	30
111			/* parse the add list */
112	db	232	for (mask = strtoken(&p, addbuf, ","); mask;
113			mask = strtoken(&p, NULL, ","), accept_num++)
114	adx	30	{
115	db	232	/* user is already on clients accept list */
116			split_nuh(mask, &nick, &user, &host);
117	adx	30
118	db	232	if (accept_message(nick, user, host, NULL, source_p))
119	adx	30	{
120			sendto_one(source_p, form_str(ERR_ACCEPTEXIST),
121	db	232	me.name, source_p->name, nick, user, host);
122	adx	30	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	db	232
132			add_accept(nick, user, host, source_p);
133	adx	30	}
134			}
135
136	db	232	/* build_nuh_list()
137	adx	30	*
138			* input - pointer to client
139			* - pointer to addbuffer
140			* - pointer to remove buffer
141			* - pointer to list of nicks
142	db	232	* - pointer to list of nicks!user@host
143	adx	30	* output -
144	db	232	* side effects - addbuf/delbuf are modified to give valid masks
145	adx	30	*/
146			static void
147	db	232	build_nuh_list(struct Client source_p, char addbuf,
148			char delbuf, char masks)
149	adx	30	{
150	db	232	char *mask = NULL;
151	adx	30	char *p = NULL;
152	db	232	int lenadd;
153			int lendel;
154	adx	30
155	db	232	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	adx	30	{
162	db	232	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	adx	30	else
175			{
176	db	232	if (*addbuf)
177			strcat(addbuf, ",");
178
179			strncat(addbuf, mask, IRCD_BUFSIZE - lenadd - 1);
180			lenadd += strlen(mask) + 1;
181	adx	30	}
182			}
183			}
184
185			/* add_accept()
186			*
187	db	232	* input - nick
188			* - username
189			* - host
190			* - pointer to client to add to acceptlist
191	adx	30	* output - none
192			* side effects - target is added to clients list
193			*/
194			static void
195	db	232	add_accept(const char name, const char username, const char *host,
196			struct Client *source_p)
197	adx	30	{
198	db	232	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	adx	30	list_accepts(source_p);
207			}
208
209	db	232	/* 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	adx	30	/* 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	db	232	struct Accept *accept;
254	adx	30	int len = 0;
255	db	232	char nuh_list[IRCD_BUFSIZE] = { '\0' };
256			char *t = nuh_list;
257	adx	30	const dlink_node *ptr = NULL;
258
259			len = strlen(me.name) + strlen(source_p->name) + 12;
260
261	db	232	DLINK_FOREACH(ptr, source_p->localClient->acceptlist.head)
262	adx	30	{
263	db	232	accept = ptr->data;
264	adx	30
265	db	232	if ((t - nuh_list) + strlen(source_p->name) + len > IRCD_BUFSIZE)
266	adx	30	{
267			*(t - 1) = '\0';
268			sendto_one(source_p, form_str(RPL_ACCEPTLIST),
269	db	232	me.name, source_p->name, nuh_list);
270			t = nuh_list;
271	adx	30	}
272
273	db	232	t += ircsprintf(t, "%s!%s@%s ",
274			accept->name, accept->username, accept->host);
275	adx	30	}
276
277	db	232	if (nuh_list[0] != '\0')
278	adx	30	{
279			*(t - 1) = '\0';
280			sendto_one(source_p, form_str(RPL_ACCEPTLIST),
281	db	232	me.name, source_p->name, nuh_list);
282	adx	30	}
283
284			sendto_one(source_p, form_str(RPL_ENDOFACCEPT),
285			me.name, source_p->name);
286			}