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  */
  25
  26 #include "stdinc.h"
  27 #include "client.h"
  28 #include "hash.h"
  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 "modules.h"
  37
  38 static int m_accept(struct Client *, struct Client *, int, const char **);
  39 static void build_nicklist(struct Client *, char *, char *, const char *);
  40
  41 static void add_accept(struct Client *, struct Client *);
  42 static void list_accepts(struct Client *);
  43
  44 struct Message accept_msgtab = {
  45         "ACCEPT", 0, 0, 0, MFLG_SLOW | MFLG_UNREG,
  46         {mg_unreg, {m_accept, 2}, mg_ignore, mg_ignore, mg_ignore, {m_accept, 2}}
  47 };
  48
  49 mapi_clist_av1 accept_clist[] = {
  50         &accept_msgtab, NULL
  51 };
  52 DECLARE_MODULE_AV1(accept, NULL, NULL, accept_clist, NULL, NULL, "$Revision: 254 $");
  53
  54 /*
  55  * m_accept - ACCEPT command handler
  56  *      parv[1] = servername
  57  */
  58 static int
  59 m_accept(struct Client *client_p, struct Client *source_p, int parc, const char *parv[])
  60 {
  61         char *nick;
  62         char *p = NULL;
  63         static char addbuf[BUFSIZE];
  64         static char delbuf[BUFSIZE];
  65         struct Client *target_p;
  66         int accept_num;
  67
  68         if(*parv[1] == '*')
  69         {
  70                 list_accepts(source_p);
  71                 return 0;
  72         }
  73
  74         build_nicklist(source_p, addbuf, delbuf, parv[1]);
  75
  76         /* parse the delete list */
  77         for (nick = rb_strtok_r(delbuf, ",", &p); nick != NULL; nick = rb_strtok_r(NULL, ",", &p))
  78         {
  79                 /* shouldnt happen, but lets be paranoid */
  80                 if((target_p = find_named_person(nick)) == NULL)
  81                 {
  82                         sendto_one_numeric(source_p, ERR_NOSUCHNICK,
  83                                            form_str(ERR_NOSUCHNICK), nick);
  84                         continue;
  85                 }
  86
  87                 /* user isnt on clients accept list */
  88                 if(!accept_message(target_p, source_p))
  89                 {
  90                         sendto_one(source_p, form_str(ERR_ACCEPTNOT),
  91                                    me.name, source_p->name, target_p->name);
  92                         continue;
  93                 }
  94
  95                 rb_dlinkFindDestroy(target_p, &source_p->localClient->allow_list);
  96                 rb_dlinkFindDestroy(source_p, &target_p->on_allow_list);
  97         }
  98
  99         /* get the number of accepts they have */
 100         accept_num = rb_dlink_list_length(&source_p->localClient->allow_list);
 101
 102         /* parse the add list */
 103         for (nick = rb_strtok_r(addbuf, ",", &p); nick; nick = rb_strtok_r(NULL, ",", &p), accept_num++)
 104         {
 105                 /* shouldnt happen, but lets be paranoid */
 106                 if((target_p = find_named_person(nick)) == NULL)
 107                 {
 108                         sendto_one_numeric(source_p, ERR_NOSUCHNICK,
 109                                            form_str(ERR_NOSUCHNICK), nick);
 110                         continue;
 111                 }
 112
 113                 /* user is already on clients accept list */
 114                 if(accept_message(target_p, source_p))
 115                 {
 116                         sendto_one(source_p, form_str(ERR_ACCEPTEXIST),
 117                                    me.name, source_p->name, target_p->name);
 118                         continue;
 119                 }
 120
 121                 if(accept_num >= ConfigFileEntry.max_accept)
 122                 {
 123                         sendto_one(source_p, form_str(ERR_ACCEPTFULL), me.name, source_p->name);
 124                         return 0;
 125                 }
 126
 127                 /* why is this here? */
 128                 /* del_from accept(target_p, source_p); */
 129                 add_accept(source_p, target_p);
 130         }
 131
 132         return 0;
 133 }
 134
 135 /*
 136  * build_nicklist()
 137  *
 138  * input        - pointer to client
 139  *              - pointer to addbuffer
 140  *              - pointer to remove buffer
 141  *              - pointer to list of nicks
 142  * output       -
 143  * side effects - addbuf/delbuf are modified to give valid nicks
 144  */
 145 static void
 146 build_nicklist(struct Client *source_p, char *addbuf, char *delbuf, const char *nicks)
 147 {
 148         char *name;
 149         char *p;
 150         int lenadd;
 151         int lendel;
 152         int del;
 153         char *n = LOCAL_COPY(nicks);
 154
 155         *addbuf = *delbuf = '\0';
 156         del = lenadd = lendel = 0;
 157
 158         /* build list of clients to add into addbuf, clients to remove in delbuf */
 159         for (name = rb_strtok_r(n, ",", &p); name; name = rb_strtok_r(NULL, ",", &p), del = 0)
 160         {
 161                 if(*name == '-')
 162                 {
 163                         del = 1;
 164                         name++;
 165                 }
 166
 167                 if(find_named_person(name) == NULL)
 168                 {
 169                         sendto_one_numeric(source_p, ERR_NOSUCHNICK,
 170                                            form_str(ERR_NOSUCHNICK), name);
 171                         continue;
 172                 }
 173
 174                 /* we're deleting a client */
 175                 if(del)
 176                 {
 177                         if(*delbuf)
 178                                 (void) strcat(delbuf, ",");
 179
 180                         (void) strncat(delbuf, name, BUFSIZE - lendel - 1);
 181                         lendel += strlen(name) + 1;
 182                 }
 183                 /* adding a client */
 184                 else
 185                 {
 186                         if(*addbuf)
 187                                 (void) strcat(addbuf, ",");
 188
 189                         (void) strncat(addbuf, name, BUFSIZE - lenadd - 1);
 190                         lenadd += strlen(name) + 1;
 191                 }
 192         }
 193 }
 194
 195 /*
 196  * add_accept()
 197  *
 198  * input        - pointer to clients accept list to add to
 199  *              - pointer to client to add
 200  * output       - none
 201  * side effects - target is added to clients list
 202  */
 203 static void
 204 add_accept(struct Client *source_p, struct Client *target_p)
 205 {
 206         rb_dlinkAddAlloc(target_p, &source_p->localClient->allow_list);
 207         rb_dlinkAddAlloc(source_p, &target_p->on_allow_list);
 208 }
 209
 210
 211 /*
 212  * list_accepts()
 213  *
 214  * input        - pointer to client
 215  * output       - none
 216  * side effects - print accept list to client
 217  */
 218 static void
 219 list_accepts(struct Client *source_p)
 220 {
 221         rb_dlink_node *ptr;
 222         struct Client *target_p;
 223         char nicks[BUFSIZE];
 224         int len = 0;
 225         int len2 = 0;
 226         int count = 0;
 227
 228         *nicks = '\0';
 229         len2 = strlen(source_p->name) + 10;
 230
 231         RB_DLINK_FOREACH(ptr, source_p->localClient->allow_list.head)
 232         {
 233                 target_p = ptr->data;
 234
 235                 if(target_p)
 236                 {
 237
 238                         if((len + strlen(target_p->name) + len2 > BUFSIZE) || count > 14)
 239                         {
 240                                 sendto_one(source_p, form_str(RPL_ACCEPTLIST),
 241                                            me.name, source_p->name, nicks);
 242
 243                                 len = count = 0;
 244                                 *nicks = '\0';
 245                         }
 246
 247                         len += rb_snprintf(nicks + len, sizeof(nicks) - len, "%s ", target_p->name);
 248                         count++;
 249                 }
 250         }
 251
 252         if(*nicks)
 253                 sendto_one(source_p, form_str(RPL_ACCEPTLIST),
 254                            me.name, source_p->name, nicks);
 255
 256         sendto_one(source_p, form_str(RPL_ENDOFACCEPT),
 257                    me.name, source_p->name);
 258
 259 }