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/*
* Ouroboros - Copyright (C) 2016
*
* The API to instruct IPCPs
*
* 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 "lib-ipcp"
#ifndef _POSIX_C_SOURCE
#define _POSIX_C_SOURCE 199506L
#endif
#include <ouroboros/ipcp.h>
#include <ouroboros/common.h>
#include <ouroboros/logs.h>
#include <ouroboros/config.h>
#include <ouroboros/utils.h>
#include <ouroboros/sockets.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include <sys/types.h>
#include <sys/wait.h>
static int send_ipcp_msg(pid_t pid,
ipcp_msg_t * msg)
{
int sockfd = 0;
buffer_t buf;
char * sock_path;
sock_path = ipcp_sock_path(pid);
if (sock_path == NULL)
return -1;
sockfd = client_socket_open(sock_path);
if (sockfd < 0) {
free(sock_path);
return -1;
}
buf.size = ipcp_msg__get_packed_size(msg);
if (buf.size == 0) {
close(sockfd);
free(sock_path);
return -1;
}
buf.data = malloc(buf.size);
if (buf.data == NULL) {
close(sockfd);
free(sock_path);
return -ENOMEM;
}
ipcp_msg__pack(msg, buf.data);
if (write(sockfd, buf.data, buf.size) == -1) {
free(sock_path);
free(buf.data);
close(sockfd);
return -1;
}
free(buf.data);
free(sock_path);
close(sockfd);
return 0;
}
pid_t ipcp_create(rina_name_t name,
char * ipcp_type)
{
pid_t pid = 0;
char * api_id = NULL;
size_t len = 0;
char * ipcp_dir = "bin/ipcpd";
char * full_name = NULL;
if (ipcp_type == NULL)
return -1;
pid = fork();
if (pid == -1) {
LOG_ERR("Failed to fork");
return pid;
}
if (pid != 0) {
return pid;
}
api_id = malloc(n_digits(name.api_id) + 1);
if (!api_id) {
LOG_ERR("Failed to malloc");
exit(EXIT_FAILURE);
}
sprintf(api_id, "%d", name.api_id);
len += strlen(INSTALL_DIR);
len += strlen(ipcp_dir);
len += 2;
full_name = malloc(len);
if (full_name == NULL) {
LOG_ERR("Failed to malloc");
free(api_id);
exit(EXIT_FAILURE);
}
strcpy(full_name, INSTALL_DIR);
strcat(full_name, "/");
strcat(full_name, ipcp_dir);
char * argv[] = {full_name,
name.ap_name, api_id,
ipcp_type, 0};
char * envp[] = {0};
execve(argv[0], &argv[0], envp);
LOG_DBG("%s", strerror(errno));
LOG_ERR("Failed to load IPCP daemon");
LOG_ERR("Make sure to run the installed version");
free(api_id);
free(full_name);
exit(EXIT_FAILURE);
}
int ipcp_destroy(pid_t pid)
{
int status;
if (kill(pid, SIGTERM)) {
LOG_ERR("Failed to destroy IPCP");
return -1;
}
if (waitpid(pid, &status, 0) < 0) {
LOG_ERR("Failed to destroy IPCP");
return -1;
}
return 0;
}
int ipcp_reg(pid_t pid,
char ** difs,
size_t difs_size)
{
ipcp_msg_t msg = IPCP_MSG__INIT;
if (difs == NULL ||
difs_size == 0 ||
difs[0] == NULL)
return -EINVAL;
msg.code = IPCP_MSG_CODE__IPCP_REG;
msg.dif_name = difs;
msg.n_dif_name = difs_size;
if (send_ipcp_msg(pid, &msg)) {
LOG_ERR("Failed to send message to daemon");
return -1;
}
return 0;
}
int ipcp_unreg(pid_t pid,
char ** difs,
size_t difs_size)
{
ipcp_msg_t msg = IPCP_MSG__INIT;
if (difs == NULL ||
difs_size == 0 ||
difs[0] == NULL)
return -EINVAL;
msg.code = IPCP_MSG_CODE__IPCP_UNREG;
msg.dif_name = difs;
msg.n_dif_name = difs_size;
if (send_ipcp_msg(pid, &msg)) {
LOG_ERR("Failed to send message to daemon");
return -1;
}
return 0;
}
int ipcp_bootstrap(pid_t pid,
struct dif_config * conf)
{
ipcp_msg_t msg = IPCP_MSG__INIT;
msg.code = IPCP_MSG_CODE__IPCP_BOOTSTRAP;
if (send_ipcp_msg(pid, &msg)) {
LOG_ERR("Failed to send message to daemon");
return -1;
}
return 0;
}
int ipcp_enroll(pid_t pid,
char * dif_name,
char * member_name,
char ** n_1_difs,
ssize_t n_1_difs_size)
{
ipcp_msg_t msg = IPCP_MSG__INIT;
if (n_1_difs == NULL ||
n_1_difs_size == 0 ||
n_1_difs[0] == NULL ||
dif_name == NULL ||
member_name == NULL)
return -EINVAL;
msg.code = IPCP_MSG_CODE__IPCP_ENROLL;
msg.dif_name = malloc(sizeof(*(msg.dif_name)));
if (msg.dif_name == NULL) {
LOG_ERR("Failed to malloc");
return -1;
}
msg.dif_name[0] = dif_name;
msg.ap_name = member_name;
msg.n_1_dif_name = n_1_difs;
msg.n_n_1_dif_name = n_1_difs_size;
if (send_ipcp_msg(pid, &msg)) {
LOG_ERR("Failed to send message to daemon");
free(msg.dif_name);
return -1;
}
free(msg.dif_name);
return 0;
}
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