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

   1 /*
   2  * This file is part of DisOrder
   3  * Copyright (C) 2004-7, 2009, 2011-13 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 3 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,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU 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, see <http://www.gnu.org/licenses/>.
  17  */
  18 /** @file lib/client-common.c
  19  * @brief Common code to client APIs
  20  */
  21
  22 #include "common.h"
  23
  24 #if HAVE_NETINET_IN_H
  25 # include <netinet/in.h>
  26 #endif
  27 #if HAVE_SYS_UN_H
  28 # include <sys/un.h>
  29 #endif
  30 #include <errno.h>
  31 #if HAVE_NETDB_H
  32 # include <netdb.h>
  33 #endif
  34 #if HAVE_UNISTD_H
  35 # include <unistd.h>
  36 #endif
  37 #if HAVE_WS2TCPIP_H
  38 # include <Ws2tcpip.h>
  39 #endif
  40
  41 #include "log.h"
  42 #include "configuration.h"
  43 #include "client-common.h"
  44 #include "addr.h"
  45 #include "mem.h"
  46
  47 /** @brief Figure out what address to connect to
  48  * @param c Configuration to honor
  49  * @param sap Where to store pointer to sockaddr
  50  * @param namep Where to store socket name
  51  * @return Socket length, or (socklen_t)-1
  52  */
  53 socklen_t find_server(struct config *c,
  54                       struct sockaddr **sap, char **namep) {
  55   struct sockaddr *sa;
  56 #if !_WIN32
  57   struct sockaddr_un su;
  58 #endif
  59   struct addrinfo *res = 0;
  60   char *name = NULL;
  61   socklen_t len;
  62
  63   if(c->connect.af != -1) {
  64     res = netaddress_resolve(&c->connect, 0, IPPROTO_TCP);
  65     if(!res)
  66       return -1;
  67     sa = res->ai_addr;
  68     len = res->ai_addrlen;
  69   } else {
  70 #if _WIN32
  71     disorder_fatal(0, "local connections are not supported on Windows");
  72 #else
  73     /* use the private socket if possible (which it should be) */
  74     name = config_get_file2(c, "private/socket");
  75     if(access(name, R_OK) != 0) {
  76       xfree(name);
  77       name = NULL;
  78     }
  79     if(!name)
  80       name = config_get_file2(c, "socket");
  81     if(strlen(name) >= sizeof su.sun_path) {
  82       disorder_error(0, "socket path is too long");
  83       return -1;
  84     }
  85     memset(&su, 0, sizeof su);
  86     su.sun_family = AF_UNIX;
  87     strcpy(su.sun_path, name);
  88     sa = (struct sockaddr *)&su;
  89     len = sizeof su;
  90     xfree(name);
  91 #endif
  92   }
  93   *sap = xmalloc_noptr(len);
  94   memcpy(*sap, sa, len);
  95   if(namep)
  96     *namep = format_sockaddr(sa);
  97   if(res)
  98     freeaddrinfo(res);
  99   return len;
 100 }
 101
 102 const char disorder__body[1];
 103 const char disorder__list[1];
 104 const char disorder__integer[1];
 105 const char disorder__time[1];
 106
 107 /*
 108 Local Variables:
 109 c-basic-offset:2
 110 comment-column:40
 111 fill-column:79
 112 indent-tabs-mode:nil
 113 End:
 114 */