awesome-client.c

   1 /*
   2  * awesome-client.c - awesome client, communicate with socket
   3  *
   4  * Copyright © 2007-2008 Julien Danjou <julien@danjou.info>
   5  * Copyright © 2007 daniel@brinkers.de
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  */
  22
  23 #include <errno.h>
  24 #include <stdio.h>
  25 #include <unistd.h>
  26 #include <sys/socket.h>
  27 #include <sys/un.h>
  28
  29 #include "awesome-client.h"
  30 #include "util.h"
  31
  32 /* GNU/Hurd workaround */
  33 #ifndef MSG_NOSIGNAL
  34 #define MSG_NOSIGNAL 0
  35 #endif
  36
  37 static int
  38 send_msg(char *msg, ssize_t msg_len)
  39 {
  40     struct sockaddr_un *addr;
  41     int csfd, ret_value = EXIT_SUCCESS;
  42     csfd = get_client_socket();
  43     addr = get_client_addr(getenv("DISPLAY"));
  44
  45     if(!addr || csfd < 0)
  46         return EXIT_FAILURE;
  47
  48     if(sendto(csfd, msg, msg_len, MSG_NOSIGNAL,
  49               (const struct sockaddr *) addr, sizeof(struct sockaddr_un)) == -1)
  50     {
  51         switch (errno)
  52         {
  53           case ENOENT:
  54               warn("Can't write to %s\n", addr->sun_path);
  55               break;
  56           default:
  57               perror("error sending datagram");
  58          }
  59          ret_value = errno;
  60     }
  61
  62     close(csfd);
  63
  64     p_delete(&addr);
  65     return ret_value;
  66 }
  67
  68 int
  69 main(void)
  70 {
  71     char buf[1024], *msg;
  72     int ret_value = EXIT_SUCCESS;
  73     ssize_t len, msg_len = 1;
  74
  75     msg = p_new(char, 1);
  76     while(fgets(buf, sizeof(buf), stdin))
  77     {
  78         len = a_strlen(buf);
  79         if (len < 2 && msg_len > 1)
  80         {
  81             ret_value = send_msg(msg, msg_len);
  82             p_delete(&msg);
  83             if (ret_value != EXIT_SUCCESS)
  84                 return ret_value;
  85             msg = p_new(char, 1);
  86             msg_len = 1;
  87         }
  88         else if (len > 1)
  89         {
  90             msg_len += len;
  91             p_realloc(&msg, msg_len);
  92             a_strncat(msg, msg_len, buf, len);
  93         }
  94     }
  95
  96     if (msg_len > 1)
  97         ret_value = send_msg(msg, msg_len);
  98
  99     p_delete(&msg);
 100
 101     return ret_value;
 102 }
 103 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80