mdw@git.distorted.org.uk Git - disorder/blob - lib/client-common.c

   1 /*
   2  * This file is part of DisOrder
   3  * Copyright (C) 2004, 2005, 2006 Richard Kettlewell
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  18  * USA
  19  */
  20
  21 #include <config.h>
  22 #include "types.h"
  23
  24 #include <sys/types.h>
  25 #include <sys/socket.h>
  26 #include <netinet/in.h>
  27 #include <sys/un.h>
  28 #include <string.h>
  29 #include <errno.h>
  30 #include <netdb.h>
  31
  32 #include "log.h"
  33 #include "configuration.h"
  34 #include "client-common.h"
  35 #include "addr.h"
  36
  37 /** @brief Invoke a function with the connect address
  38  * @param c Passed to callback
  39  * @param function Function to call
  40  *
  41  * Calls @p function with the result of looking up the connect address.
  42  */
  43 int with_sockaddr(void *c,
  44                   int (*function)(void *c,
  45                                   const struct sockaddr *sa,
  46                                   socklen_t len,
  47                                   const char *ident)) {
  48   const char *path;
  49   struct sockaddr_un su;
  50   struct addrinfo *res;
  51   char *name;
  52   int n;
  53
  54   static const struct addrinfo pref = {
  55     0,
  56     PF_INET,
  57     SOCK_STREAM,
  58     IPPROTO_TCP,
  59     0,
  60     0,
  61     0,
  62     0
  63   };
  64
  65   if(config->connect.n) {
  66     res = get_address(&config->connect, &pref, &name);
  67     if(!res) return -1;
  68     n = function(c, res->ai_addr, res->ai_addrlen, name);
  69     freeaddrinfo(res);
  70     return n;
  71   } else {
  72     path = config_get_file("socket");
  73     if(strlen(path) >= sizeof su.sun_path) {
  74       error(errno, "socket path is too long");
  75       return -1;
  76     }
  77     memset(&su, 0, sizeof su);
  78     su.sun_family = AF_UNIX;
  79     strcpy(su.sun_path, path);
  80     return function(c, (struct sockaddr *)&su, sizeof su, path);
  81   }
  82 }
  83
  84 /*
  85 Local Variables:
  86 c-basic-offset:2
  87 comment-column:40
  88 fill-column:79
  89 indent-tabs-mode:nil
  90 End:
  91 */