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
  38 #include "log.h"
  39 #include "configuration.h"
  40 #include "client-common.h"
  41 #include "addr.h"
  42 #include "mem.h"
  43
  44 /** @brief Figure out what address to connect to
  45  * @param c Configuration to honor
  46  * @param sap Where to store pointer to sockaddr
  47  * @param namep Where to store socket name
  48  * @return Socket length, or (socklen_t)-1
  49  */
  50 socklen_t find_server(struct config *c,
  51                       struct sockaddr **sap, char **namep) {
  52   struct sockaddr *sa;
  53   struct sockaddr_un su;
  54   struct addrinfo *res = 0;
  55   char *name = NULL;
  56   socklen_t len;
  57
  58   if(c->connect.af != -1) {
  59     res = netaddress_resolve(&c->connect, 0, IPPROTO_TCP);
  60     if(!res)
  61       return -1;
  62     sa = res->ai_addr;
  63     len = res->ai_addrlen;
  64   } else {
  65     /* use the private socket if possible (which it should be) */
  66     name = config_get_file2(c, "private/socket");
  67     if(access(name, R_OK) != 0) {
  68       xfree(name);
  69       name = NULL;
  70     }
  71     if(!name)
  72       name = config_get_file2(c, "socket");
  73     if(strlen(name) >= sizeof su.sun_path) {
  74       disorder_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, name);
  80     sa = (struct sockaddr *)&su;
  81     len = sizeof su;
  82     xfree(name);
  83   }
  84   *sap = xmalloc_noptr(len);
  85   memcpy(*sap, sa, len);
  86   if(namep)
  87     *namep = format_sockaddr(sa);
  88   if(res)
  89     freeaddrinfo(res);
  90   return len;
  91 }
  92
  93 const char disorder__body[1];
  94 const char disorder__list[1];
  95 const char disorder__integer[1];
  96 const char disorder__time[1];
  97
  98 /*
  99 Local Variables:
 100 c-basic-offset:2
 101 comment-column:40
 102 fill-column:79
 103 indent-tabs-mode:nil
 104 End:
 105 */