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/* --*- c -*--
* Copyright (C) 2012 Enrico Scholz <enrico.scholz@informatik.tu-chemnitz.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; version 3 of the License.
*
* 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, see <http://www.gnu.org/licenses/>.
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <sysexits.h>
#include <unistd.h>
#include <alloca.h>
#include <fcntl.h>
#include <sys/socket.h>
#include <sys/un.h>
int main(int argc, char *argv[])
{
struct sockaddr_un addr = {
.sun_family = AF_UNIX,
.sun_path = SOCKET_PATH,
};
int fd;
char *cmd;
char const *dev;
char const *action = getenv("ACTION");
ssize_t l;
if (argc < 2) {
fprintf(stderr, "missing device name\n");
return EX_USAGE;
}
if (argc > 2) {
strncpy(addr.sun_path, argv[2], sizeof addr.sun_path - 1);
/* string is terminated by initial assignment */
}
fd = socket(AF_UNIX, SOCK_DGRAM, 0);
if (fd < 0) {
perror("socket()");
return EX_OSERR;
}
dev = argv[1];
if (strncmp(dev, "input/", 6) == 0)
dev += 6;
if (action == NULL)
action = "add";
cmd = alloca(strlen(action) + sizeof(" \n") + strlen(dev));
strcpy(cmd, action);
strcat(cmd, " ");
strcat(cmd, dev);
strcat(cmd, "\n");
l = sendto(fd, cmd, strlen(cmd), 0, (void *)&addr, sizeof addr);
close(fd);
if (l < 0) {
perror("sendto()");
return EX_OSERR;
}
if ((size_t)l != strlen(cmd)) {
fprintf(stderr, "not all data sent\n");
return EX_OSERR;
}
return EX_OK;
}
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