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[disorder] / lib / client-common.c

/*
 * This file is part of DisOrder
 * Copyright (C) 2004, 2005, 2006, 2007 Richard Kettlewell
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
 * USA
 */

#include <config.h>
#include "types.h"

#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <sys/un.h>
#include <string.h>
#include <errno.h>
#include <netdb.h>

#include "log.h"
#include "configuration.h"
#include "client-common.h"
#include "addr.h"
#include "mem.h"

/** @brief Figure out what address to connect to
 * @param sap Where to store pointer to sockaddr
 * @param namep Where to store socket name
 * @return Socket length, or (socklen_t)-1
 */
socklen_t find_server(struct sockaddr **sap, char **namep) {
  struct sockaddr *sa;
  struct sockaddr_un su;
  struct addrinfo *res = 0;
  char *name;
  socklen_t len;
   
  static const struct addrinfo pref = {
    0,
    PF_INET,
    SOCK_STREAM,
    IPPROTO_TCP,
    0,
    0,
    0,
    0
  };

  if(config->connect.n) {
    res = get_address(&config->connect, &pref, &name);
    if(!res) return -1;
    sa = res->ai_addr;
    len = res->ai_addrlen;
  } else {
    name = config_get_file("socket");
    if(strlen(name) >= sizeof su.sun_path) {
      error(errno, "socket path is too long");
      return -1;
    }
    memset(&su, 0, sizeof su);
    su.sun_family = AF_UNIX;
    strcpy(su.sun_path, name);
    sa = (struct sockaddr *)&su;
    len = sizeof su;
  }
  *sap = xmalloc_noptr(len);
  memcpy(*sap, sa, len);
  if(namep)
    *namep = name;
  if(res)
    freeaddrinfo(res);
  return len;
}

/*
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*/