modules/m_accept.c

   1 /*
   2  *  ircd-ratbox: A slightly useful ircd.
   3  *  m_accept.c: Allows a user to talk to a +g user.
   4  *
   5  *  Copyright (C) 1990 Jarkko Oikarinen and University of Oulu, Co Center
   6  *  Copyright (C) 1996-2002 Hybrid Development Team
   7  *  Copyright (C) 2002-2005 ircd-ratbox development team
   8  *
   9  *  This program is free software; you can redistribute it and/or modify
  10  *  it under the terms of the GNU General Public License as published by
  11  *  the Free Software Foundation; either version 2 of the License, or
  12  *  (at your option) any later version.
  13  *
  14  *  This program is distributed in the hope that it will be useful,
  15  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  *  GNU General Public License for more details.
  18  *
  19  *  You should have received a copy of the GNU General Public License
  20  *  along with this program; if not, write to the Free Software
  21  *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307
  22  *  USA
  23  *
  24  *  $Id: m_accept.c 254 2005-09-21 23:35:12Z nenolod $
  25  */
  26
  27 #include "stdinc.h"
  28 #include "client.h"
  29 #include "hash.h"
  30 #include "ircd.h"
  31 #include "numeric.h"
  32 #include "s_conf.h"
  33 #include "s_serv.h"
  34 #include "send.h"
  35 #include "msg.h"
  36 #include "parse.h"
  37 #include "modules.h"
  38
  39 static int m_accept(struct Client *, struct Client *, int, const char **);
  40 static void build_nicklist(struct Client *, char *, char *, const char *);
  41
  42 static void add_accept(struct Client *, struct Client *);
  43 static void list_accepts(struct Client *);
  44
  45 struct Message accept_msgtab = {
  46         "ACCEPT", 0, 0, 0, MFLG_SLOW | MFLG_UNREG,
  47         {mg_unreg, {m_accept, 2}, mg_ignore, mg_ignore, mg_ignore, {m_accept, 2}}
  48 };
  49
  50 mapi_clist_av1 accept_clist[] = {
  51         &accept_msgtab, NULL
  52 };
  53 DECLARE_MODULE_AV1(accept, NULL, NULL, accept_clist, NULL, NULL, "$Revision: 254 $");
  54
  55 /*
  56  * m_accept - ACCEPT command handler
  57  *      parv[1] = servername
  58  */
  59 static int
  60 m_accept(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
  61 {
  62         char *nick;
  63         char *p = NULL;
  64         static char addbuf[BUFSIZE];
  65         static char delbuf[BUFSIZE];
  66         struct Client *target_p;
  67         int accept_num;
  68
  69         if(*parv[1] == '*')
  70         {
  71                 list_accepts(source_p);
  72                 return 0;
  73         }
  74
  75         build_nicklist(source_p, addbuf, delbuf, parv[1]);
  76
  77         /* parse the delete list */
  78         for (nick = rb_strtok_r(delbuf, ",", &p); nick != NULL; nick = rb_strtok_r(NULL, ",", &p))
  79         {
  80                 /* shouldnt happen, but lets be paranoid */
  81                 if((target_p = find_named_person(nick)) == NULL)
  82                 {
  83                         sendto_one_numeric(source_p, ERR_NOSUCHNICK,
  84                                            form_str(ERR_NOSUCHNICK), nick);
  85                         continue;
  86                 }
  87
  88                 /* user isnt on clients accept list */
  89                 if(!accept_message(target_p, source_p))
  90                 {
  91                         sendto_one(source_p, form_str(ERR_ACCEPTNOT),
  92                                    me.name, source_p->name, target_p->name);
  93                         continue;
  94                 }
  95
  96                 rb_dlinkFindDestroy(target_p, &source_p->localClient->allow_list);
  97                 rb_dlinkFindDestroy(source_p, &target_p->on_allow_list);
  98         }
  99
 100         /* get the number of accepts they have */
 101         accept_num = rb_dlink_list_length(&source_p->localClient->allow_list);
 102
 103         /* parse the add list */
 104         for (nick = rb_strtok_r(addbuf, ",", &p); nick; nick = rb_strtok_r(NULL, ",", &p), accept_num++)
 105         {
 106                 /* shouldnt happen, but lets be paranoid */
 107                 if((target_p = find_named_person(nick)) == NULL)
 108                 {
 109                         sendto_one_numeric(source_p, ERR_NOSUCHNICK,
 110                                            form_str(ERR_NOSUCHNICK), nick);
 111                         continue;
 112                 }
 113
 114                 /* user is already on clients accept list */
 115                 if(accept_message(target_p, source_p))
 116                 {
 117                         sendto_one(source_p, form_str(ERR_ACCEPTEXIST),
 118                                    me.name, source_p->name, target_p->name);
 119                         continue;
 120                 }
 121
 122                 if(accept_num >= ConfigFileEntry.max_accept)
 123                 {
 124                         sendto_one(source_p, form_str(ERR_ACCEPTFULL), me.name, source_p->name);
 125                         return 0;
 126                 }
 127
 128                 /* why is this here? */
 129                 /* del_from accept(target_p, source_p); */
 130                 add_accept(source_p, target_p);
 131         }
 132
 133         return 0;
 134 }
 135
 136 /*
 137  * build_nicklist()
 138  *
 139  * input        - pointer to client
 140  *              - pointer to addbuffer
 141  *              - pointer to remove buffer
 142  *              - pointer to list of nicks
 143  * output       -
 144  * side effects - addbuf/delbuf are modified to give valid nicks
 145  */
 146 static void
 147 build_nicklist(struct Client *source_p, char *addbuf, char *delbuf, const char *nicks)
 148 {
 149         char *name;
 150         char *p;
 151         int lenadd;
 152         int lendel;
 153         int del;
 154         struct Client *target_p;
 155         char *n = LOCAL_COPY(nicks);
 156
 157         *addbuf = *delbuf = '\0';
 158         del = lenadd = lendel = 0;
 159
 160         /* build list of clients to add into addbuf, clients to remove in delbuf */
 161         for (name = rb_strtok_r(n, ",", &p); name; name = rb_strtok_r(NULL, ",", &p), del = 0)
 162         {
 163                 if(*name == '-')
 164                 {
 165                         del = 1;
 166                         name++;
 167                 }
 168
 169                 if((target_p = find_named_person(name)) == NULL)
 170                 {
 171                         sendto_one_numeric(source_p, ERR_NOSUCHNICK,
 172                                            form_str(ERR_NOSUCHNICK), name);
 173                         continue;
 174                 }
 175
 176                 /* we're deleting a client */
 177                 if(del)
 178                 {
 179                         if(*delbuf)
 180                                 (void) strcat(delbuf, ",");
 181
 182                         (void) strncat(delbuf, name, BUFSIZE - lendel - 1);
 183                         lendel += strlen(name) + 1;
 184                 }
 185                 /* adding a client */
 186                 else
 187                 {
 188                         if(*addbuf)
 189                                 (void) strcat(addbuf, ",");
 190
 191                         (void) strncat(addbuf, name, BUFSIZE - lenadd - 1);
 192                         lenadd += strlen(name) + 1;
 193                 }
 194         }
 195 }
 196
 197 /*
 198  * add_accept()
 199  *
 200  * input        - pointer to clients accept list to add to
 201  *              - pointer to client to add
 202  * output       - none
 203  * side effects - target is added to clients list
 204  */
 205 static void
 206 add_accept(struct Client *source_p, struct Client *target_p)
 207 {
 208         rb_dlinkAddAlloc(target_p, &source_p->localClient->allow_list);
 209         rb_dlinkAddAlloc(source_p, &target_p->on_allow_list);
 210 }
 211
 212
 213 /*
 214  * list_accepts()
 215  *
 216  * input        - pointer to client
 217  * output       - none
 218  * side effects - print accept list to client
 219  */
 220 static void
 221 list_accepts(struct Client *source_p)
 222 {
 223         rb_dlink_node *ptr;
 224         struct Client *target_p;
 225         char nicks[BUFSIZE];
 226         int len = 0;
 227         int len2 = 0;
 228         int count = 0;
 229
 230         *nicks = '\0';
 231         len2 = strlen(source_p->name) + 10;
 232
 233         RB_DLINK_FOREACH(ptr, source_p->localClient->allow_list.head)
 234         {
 235                 target_p = ptr->data;
 236
 237                 if(target_p)
 238                 {
 239
 240                         if((len + strlen(target_p->name) + len2 > BUFSIZE) || count > 14)
 241                         {
 242                                 sendto_one(source_p, form_str(RPL_ACCEPTLIST),
 243                                            me.name, source_p->name, nicks);
 244
 245                                 len = count = 0;
 246                                 *nicks = '\0';
 247                         }
 248
 249                         len += rb_snprintf(nicks + len, sizeof(nicks) - len, "%s ", target_p->name);
 250                         count++;
 251                 }
 252         }
 253
 254         if(*nicks)
 255                 sendto_one(source_p, form_str(RPL_ACCEPTLIST),
 256                            me.name, source_p->name, nicks);
 257
 258         sendto_one(source_p, form_str(RPL_ENDOFACCEPT),
 259                    me.name, source_p->name);
 260
 261 }