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         char *n = LOCAL_COPY(nicks);
 155
 156         *addbuf = *delbuf = '\0';
 157         del = lenadd = lendel = 0;
 158
 159         /* build list of clients to add into addbuf, clients to remove in delbuf */
 160         for (name = rb_strtok_r(n, ",", &p); name; name = rb_strtok_r(NULL, ",", &p), del = 0)
 161         {
 162                 if(*name == '-')
 163                 {
 164                         del = 1;
 165                         name++;
 166                 }
 167
 168                 if(find_named_person(name) == NULL)
 169                 {
 170                         sendto_one_numeric(source_p, ERR_NOSUCHNICK,
 171                                            form_str(ERR_NOSUCHNICK), name);
 172                         continue;
 173                 }
 174
 175                 /* we're deleting a client */
 176                 if(del)
 177                 {
 178                         if(*delbuf)
 179                                 (void) strcat(delbuf, ",");
 180
 181                         (void) strncat(delbuf, name, BUFSIZE - lendel - 1);
 182                         lendel += strlen(name) + 1;
 183                 }
 184                 /* adding a client */
 185                 else
 186                 {
 187                         if(*addbuf)
 188                                 (void) strcat(addbuf, ",");
 189
 190                         (void) strncat(addbuf, name, BUFSIZE - lenadd - 1);
 191                         lenadd += strlen(name) + 1;
 192                 }
 193         }
 194 }
 195
 196 /*
 197  * add_accept()
 198  *
 199  * input        - pointer to clients accept list to add to
 200  *              - pointer to client to add
 201  * output       - none
 202  * side effects - target is added to clients list
 203  */
 204 static void
 205 add_accept(struct Client *source_p, struct Client *target_p)
 206 {
 207         rb_dlinkAddAlloc(target_p, &source_p->localClient->allow_list);
 208         rb_dlinkAddAlloc(source_p, &target_p->on_allow_list);
 209 }
 210
 211
 212 /*
 213  * list_accepts()
 214  *
 215  * input        - pointer to client
 216  * output       - none
 217  * side effects - print accept list to client
 218  */
 219 static void
 220 list_accepts(struct Client *source_p)
 221 {
 222         rb_dlink_node *ptr;
 223         struct Client *target_p;
 224         char nicks[BUFSIZE];
 225         int len = 0;
 226         int len2 = 0;
 227         int count = 0;
 228
 229         *nicks = '\0';
 230         len2 = strlen(source_p->name) + 10;
 231
 232         RB_DLINK_FOREACH(ptr, source_p->localClient->allow_list.head)
 233         {
 234                 target_p = ptr->data;
 235
 236                 if(target_p)
 237                 {
 238
 239                         if((len + strlen(target_p->name) + len2 > BUFSIZE) || count > 14)
 240                         {
 241                                 sendto_one(source_p, form_str(RPL_ACCEPTLIST),
 242                                            me.name, source_p->name, nicks);
 243
 244                                 len = count = 0;
 245                                 *nicks = '\0';
 246                         }
 247
 248                         len += rb_snprintf(nicks + len, sizeof(nicks) - len, "%s ", target_p->name);
 249                         count++;
 250                 }
 251         }
 252
 253         if(*nicks)
 254                 sendto_one(source_p, form_str(RPL_ACCEPTLIST),
 255                            me.name, source_p->name, nicks);
 256
 257         sendto_one(source_p, form_str(RPL_ENDOFACCEPT),
 258                    me.name, source_p->name);
 259
 260 }