awesome/awesome-client.c

135 lines
3.4 KiB
C

/*
* awesome-client.c - awesome client, communicate with socket
*
* Copyright © 2007-2008 Julien Danjou <julien@danjou.info>
* Copyright © 2007 daniel@brinkers.de
*
* 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.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
#include <errno.h>
#include <stdio.h>
#include <unistd.h>
#include <sys/socket.h>
#include <sys/un.h>
#include "common/socket.h"
#include "common/version.h"
#include "common/util.h"
/* GNU/Hurd workaround */
#ifndef MSG_NOSIGNAL
#define MSG_NOSIGNAL 0
#endif
static int
send_msg(char *msg, ssize_t msg_len)
{
struct sockaddr_un *addr;
int csfd, ret_value = EXIT_SUCCESS;
csfd = get_client_socket();
addr = get_client_addr(getenv("DISPLAY"));
if(!addr || csfd < 0)
return EXIT_FAILURE;
if(sendto(csfd, msg, msg_len, MSG_NOSIGNAL,
(const struct sockaddr *) addr, sizeof(struct sockaddr_un)) == -1)
{
switch (errno)
{
case ENOENT:
warn("can't write to %s\n", addr->sun_path);
break;
default:
warn("error sending datagram: %s\n", strerror(errno));
}
ret_value = errno;
}
close(csfd);
p_delete(&addr);
return ret_value;
}
/** Print help and exit(2) with given exit_code.
*/
static void __attribute__ ((noreturn))
exit_help(int exit_code)
{
FILE *outfile = (exit_code == EXIT_SUCCESS) ? stdout : stderr;
fprintf(outfile, "Usage: awesome-client [--version|--help]\n"
"In normal operation, give no parameters and issue commands "
"on standard input.\n");
exit(exit_code);
}
int
main(int argc, char *argv[])
{
char buf[1024], *msg;
int ret_value = EXIT_SUCCESS;
ssize_t len, msg_len = 1;
if (argc < 2)
{
/* no args to parse, nothing to do */
}
else if (argc == 2)
{
if(!a_strcmp("-v", argv[1]) || !a_strcmp("--version", argv[1]))
eprint_version("awesome-client");
else if(!a_strcmp("-h", argv[1]) || !a_strcmp("--help", argv[1]))
exit_help(EXIT_SUCCESS);
}
else
{
exit_help(EXIT_SUCCESS);
}
msg = p_new(char, 1);
while(fgets(buf, sizeof(buf), stdin))
{
len = a_strlen(buf);
if (len < 2 && msg_len > 1)
{
ret_value = send_msg(msg, msg_len);
p_delete(&msg);
if (ret_value != EXIT_SUCCESS)
return ret_value;
msg = p_new(char, 1);
msg_len = 1;
}
else if (len > 1)
{
msg_len += len;
p_realloc(&msg, msg_len);
a_strncat(msg, msg_len, buf, len);
}
}
if (msg_len > 1)
ret_value = send_msg(msg, msg_len);
p_delete(&msg);
return ret_value;
}
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