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[0] = sender prefix
  58  *      parv[1] = servername
  59  */
  60 static int
  61 m_accept(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
  62 {
  63         char *nick;
  64         char *p = NULL;
  65         static char addbuf[BUFSIZE];
  66         static char delbuf[BUFSIZE];
  67         struct Client *target_p;
  68         int accept_num;
  69
  70         if(*parv[1] == '*')
  71         {
  72                 list_accepts(source_p);
  73                 return 0;
  74         }
  75
  76         build_nicklist(source_p, addbuf, delbuf, parv[1]);
  77
  78         /* parse the delete list */
  79         for (nick = strtoken(&p, delbuf, ","); nick != NULL; nick = strtoken(&p, NULL, ","))
  80         {
  81                 /* shouldnt happen, but lets be paranoid */
  82                 if((target_p = find_named_person(nick)) == NULL)
  83                 {
  84                         sendto_one_numeric(source_p, ERR_NOSUCHNICK,
  85                                            form_str(ERR_NOSUCHNICK), nick);
  86                         continue;
  87                 }
  88
  89                 /* user isnt on clients accept list */
  90                 if(!accept_message(target_p, source_p))
  91                 {
  92                         sendto_one(source_p, form_str(ERR_ACCEPTNOT),
  93                                    me.name, source_p->name, target_p->name);
  94                         continue;
  95                 }
  96
  97                 rb_dlinkFindDestroy(target_p, &source_p->localClient->allow_list);
  98                 rb_dlinkFindDestroy(source_p, &target_p->on_allow_list);
  99         }
 100
 101         /* get the number of accepts they have */
 102         accept_num = rb_dlink_list_length(&source_p->localClient->allow_list);
 103
 104         /* parse the add list */
 105         for (nick = strtoken(&p, addbuf, ","); nick; nick = strtoken(&p, NULL, ","))
 106         {
 107                 /* shouldnt happen, but lets be paranoid */
 108                 if((target_p = find_named_person(nick)) == NULL)
 109                 {
 110                         sendto_one_numeric(source_p, ERR_NOSUCHNICK,
 111                                            form_str(ERR_NOSUCHNICK), nick);
 112                         continue;
 113                 }
 114
 115                 /* user is already on clients accept list */
 116                 if(accept_message(target_p, source_p))
 117                 {
 118                         sendto_one(source_p, form_str(ERR_ACCEPTEXIST),
 119                                    me.name, source_p->name, target_p->name);
 120                         continue;
 121                 }
 122
 123                 if(accept_num >= ConfigFileEntry.max_accept)
 124                 {
 125                         sendto_one(source_p, form_str(ERR_ACCEPTFULL), me.name, source_p->name);
 126                         return 0;
 127                 }
 128
 129                 /* why is this here? */
 130                 /* del_from accept(target_p, source_p); */
 131                 add_accept(source_p, target_p);
 132                 accept_num++;
 133         }
 134
 135         return 0;
 136 }
 137
 138 /*
 139  * build_nicklist()
 140  *
 141  * input        - pointer to client
 142  *              - pointer to addbuffer
 143  *              - pointer to remove buffer
 144  *              - pointer to list of nicks
 145  * output       -
 146  * side effects - addbuf/delbuf are modified to give valid nicks
 147  */
 148 static void
 149 build_nicklist(struct Client *source_p, char *addbuf, char *delbuf, const char *nicks)
 150 {
 151         char *name;
 152         char *p;
 153         int lenadd;
 154         int lendel;
 155         int del;
 156         struct Client *target_p;
 157         char *n = LOCAL_COPY(nicks);
 158
 159         *addbuf = *delbuf = '\0';
 160         del = lenadd = lendel = 0;
 161
 162         /* build list of clients to add into addbuf, clients to remove in delbuf */
 163         for (name = strtoken(&p, n, ","); name; name = strtoken(&p, NULL, ","), del = 0)
 164         {
 165                 if(*name == '-')
 166                 {
 167                         del = 1;
 168                         name++;
 169                 }
 170
 171                 if((target_p = find_named_person(name)) == NULL)
 172                 {
 173                         sendto_one_numeric(source_p, ERR_NOSUCHNICK,
 174                                            form_str(ERR_NOSUCHNICK), name);
 175                         continue;
 176                 }
 177
 178                 /* we're deleting a client */
 179                 if(del)
 180                 {
 181                         if(*delbuf)
 182                                 (void) strcat(delbuf, ",");
 183
 184                         (void) strncat(delbuf, name, BUFSIZE - lendel - 1);
 185                         lendel += strlen(name) + 1;
 186                 }
 187                 /* adding a client */
 188                 else
 189                 {
 190                         if(*addbuf)
 191                                 (void) strcat(addbuf, ",");
 192
 193                         (void) strncat(addbuf, name, BUFSIZE - lenadd - 1);
 194                         lenadd += strlen(name) + 1;
 195                 }
 196         }
 197 }
 198
 199 /*
 200  * add_accept()
 201  *
 202  * input        - pointer to clients accept list to add to
 203  *              - pointer to client to add
 204  * output       - none
 205  * side effects - target is added to clients list
 206  */
 207 static void
 208 add_accept(struct Client *source_p, struct Client *target_p)
 209 {
 210         rb_dlinkAddAlloc(target_p, &source_p->localClient->allow_list);
 211         rb_dlinkAddAlloc(source_p, &target_p->on_allow_list);
 212 }
 213
 214
 215 /*
 216  * list_accepts()
 217  *
 218  * input        - pointer to client
 219  * output       - none
 220  * side effects - print accept list to client
 221  */
 222 static void
 223 list_accepts(struct Client *source_p)
 224 {
 225         rb_dlink_node *ptr;
 226         struct Client *target_p;
 227         char nicks[BUFSIZE];
 228         int len = 0;
 229         int len2 = 0;
 230         int count = 0;
 231
 232         *nicks = '\0';
 233         len2 = strlen(source_p->name) + 10;
 234
 235         RB_DLINK_FOREACH(ptr, source_p->localClient->allow_list.head)
 236         {
 237                 target_p = ptr->data;
 238
 239                 if(target_p)
 240                 {
 241
 242                         if((len + strlen(target_p->name) + len2 > BUFSIZE) || count > 14)
 243                         {
 244                                 sendto_one(source_p, form_str(RPL_ACCEPTLIST),
 245                                            me.name, source_p->name, nicks);
 246
 247                                 len = count = 0;
 248                                 *nicks = '\0';
 249                         }
 250
 251                         len += rb_snprintf(nicks + len, sizeof(nicks) - len, "%s ", target_p->name);
 252                         count++;
 253                 }
 254         }
 255
 256         if(*nicks)
 257                 sendto_one(source_p, form_str(RPL_ACCEPTLIST),
 258                            me.name, source_p->name, nicks);
 259
 260         sendto_one(source_p, form_str(RPL_ENDOFACCEPT),
 261                    me.name, source_p->name);
 262
 263 }