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socket.c
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socket.c
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/*
* Copyright (c) 2011 Kilian Klimek <kilian.klimek@gmail.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <stdio.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <unistd.h>
#include "socket.h"
#include "commands.h"
#define VITUNES_SOCK "/tmp/.vitunes"
int
sock_send_msg(const char *msg)
{
int ret;
struct sockaddr_un addr;
socklen_t addr_len;
if((ret = socket(AF_UNIX, SOCK_DGRAM, 0)) == -1)
return -1;
addr.sun_family = AF_UNIX;
strcpy(addr.sun_path, VITUNES_SOCK);
addr_len = sizeof(addr.sun_family) + strlen(VITUNES_SOCK) + 1;
if(sendto(ret, msg, strlen(msg), 0, (struct sockaddr *) &addr, addr_len) == -1) {
close(ret);
return -1;
}
return 0;
}
int
sock_listen(void)
{
int ret;
struct sockaddr_un addr;
socklen_t addr_len;
int coe = 1;
unlink(VITUNES_SOCK);
if((ret = socket(AF_UNIX, SOCK_DGRAM, 0)) == -1)
return -1;
addr.sun_family = AF_UNIX;
strcpy(addr.sun_path, VITUNES_SOCK);
addr_len = sizeof(addr.sun_family) + strlen(VITUNES_SOCK) + 1;
if(bind(ret, (struct sockaddr *) &addr, addr_len) == -1)
return -1;
fcntl(ret, F_SETFD, FD_CLOEXEC, &coe);
return ret;
}
ssize_t
sock_recv_msg(int sock, char *msg, size_t msg_len)
{
struct sockaddr_un addr;
socklen_t addr_len = sizeof(struct sockaddr_un);
ssize_t ret;
ret = recvfrom(sock, msg, msg_len, 0, (struct sockaddr *) &addr, &addr_len);
if(ret > -1)
msg[ret] = '\0';
return ret;
}
void
sock_recv_and_exec(int sock)
{
char msg[64];
if(sock_recv_msg(sock, msg, sizeof(msg)) == -1)
return;
if(!strcmp(msg, VITUNES_RUNNING))
return;
if(!kb_execute_by_name(msg))
cmd_execute(msg);
}