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/*
* Ouroboros - Copyright (C) 2016
*
* The sockets layer to communicate between daemons
*
* Sander Vrijders <sander.vrijders@intec.ugent.be>
*
* 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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#define OUROBOROS_PREFIX "libouroboros-sockets"
#include <ouroboros/logs.h>
#include <ouroboros/common.h>
#include <ouroboros/sockets.h>
#include <ouroboros/utils.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <string.h>
#include <stdlib.h>
int client_socket_open(char * file_name)
{
int sockfd;
struct sockaddr_un serv_addr;
sockfd = socket(AF_UNIX, SOCK_STREAM, 0);
if (sockfd < 0) {
LOG_ERR("Failed to open socket");
return -1;
}
serv_addr.sun_family = AF_UNIX;
sprintf(serv_addr.sun_path, "%s", file_name);
if (connect(sockfd,
(struct sockaddr *) &serv_addr,
sizeof(serv_addr))) {
LOG_ERR("Failed to connect to daemon");
return -1;
}
return sockfd;
}
int server_socket_open(char * file_name)
{
int sockfd;
struct sockaddr_un serv_addr;
if (access(file_name, F_OK) != -1) {
/* File exists */
if (unlink(file_name)) {
LOG_ERR("Failed to unlink filename: %s",
strerror(errno));
return -1;
}
}
sockfd = socket(AF_UNIX, SOCK_STREAM, 0);
if (sockfd < 0) {
LOG_ERR("Failed to open socket");
return -1;
}
serv_addr.sun_family = AF_UNIX;
sprintf(serv_addr.sun_path, "%s", file_name);
if (bind(sockfd,
(struct sockaddr *) &serv_addr,
sizeof(serv_addr))) {
LOG_ERR("Failed to bind socket");
return -1;
}
if (listen(sockfd, 0)) {
LOG_ERR("Failed to listen to socket");
return -1;
}
return sockfd;
}
irm_msg_t * send_recv_irm_msg(irm_msg_t * msg)
{
int sockfd;
buffer_t buf;
ssize_t count = 0;
irm_msg_t * recv_msg = NULL;
sockfd = client_socket_open(IRM_SOCK_PATH);
if (sockfd < 0)
return NULL;
buf.size = irm_msg__get_packed_size(msg);
if (buf.size == 0) {
close(sockfd);
return NULL;
}
buf.data = malloc(IRM_MSG_BUF_SIZE);
if (buf.data == NULL) {
close(sockfd);
return NULL;
}
irm_msg__pack(msg, buf.data);
if (write(sockfd, buf.data, buf.size) == -1) {
free(buf.data);
close(sockfd);
return NULL;
}
count = read(sockfd, buf.data, IRM_MSG_BUF_SIZE);
if (count <= 0) {
free(buf.data);
close(sockfd);
return NULL;
}
recv_msg = irm_msg__unpack(NULL, count, buf.data);
if (recv_msg == NULL) {
free(buf.data);
close(sockfd);
return NULL;
}
free(buf.data);
close(sockfd);
return recv_msg;
}
char * ipcp_sock_path(pid_t pid)
{
char * full_name = NULL;
char * pid_string = NULL;
size_t len = 0;
char * delim = "-";
len = n_digits(pid);
pid_string = malloc(len + 1);
if (pid_string == NULL)
return NULL;
sprintf(pid_string, "%d", pid);
len += strlen(IPCP_SOCK_PATH_PREFIX);
len += strlen(delim);
full_name = malloc(len + 1);
if (full_name == NULL) {
free(pid_string);
return NULL;
}
strcpy(full_name, IPCP_SOCK_PATH_PREFIX);
strcat(full_name, delim);
strcat(full_name, pid_string);
free(pid_string);
return full_name;
}
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