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/*
* rhctl
*
* Copyright (C) 2009 Christian Pointner <equinox@spreadspace.org>
*
* This file is part of rhctl.
*
* rhctl 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 3 of the License, or
* any later version.
*
* rhctl 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 rhctl. If not, see <http://www.gnu.org/licenses/>.
*/
#include "datatypes.h"
#include <sys/un.h>
#include <termios.h>
#include <unistd.h>
#include <errno.h>
#include "log.h"
#include "utils.h"
int init_command_socket(const char* path)
{
int fd = socket(AF_UNIX, SOCK_STREAM, 0);
if(fd < 0) {
log_printf(ERROR, "unable to open socket: %s", strerror(errno));
return -1;
}
struct sockaddr_un local;
local.sun_family = AF_UNIX;
if(sizeof(local.sun_path) <= strlen(path)) {
log_printf(ERROR, "socket path is to long (max %d)", sizeof(local.sun_path)-1);
return -1;
}
strcpy(local.sun_path, path);
unlink(local.sun_path);
int len = SUN_LEN(&local);
int ret = bind(fd, (struct sockaddr*)&local, len);
if(ret) {
log_printf(ERROR, "unable to bind to '%s': %s", local.sun_path, strerror(errno));
return -1;
}
ret = listen(fd, 4);
if(ret) {
log_printf(ERROR, "unable to listen on command socket: %s", local.sun_path, strerror(errno));
return -1;
}
log_printf(INFO, "now listening on %s for incoming commands", path);
return fd;
}
int connect_command_socket(const char* path)
{
int fd = socket(AF_UNIX, SOCK_STREAM, 0);
if(fd < 0) {
log_printf(ERROR, "unable to open socket: %s", strerror(errno));
return -1;
}
struct sockaddr_un remote;
remote.sun_family = AF_UNIX;
if(sizeof(remote.sun_path) <= strlen(path)) {
log_printf(ERROR, "socket path is to long (max %d)", sizeof(remote.sun_path)-1);
return -1;
}
strcpy(remote.sun_path, path);
int len = SUN_LEN(&remote);
int ret = connect(fd, (struct sockaddr*)&remote, len);
if(ret) {
log_printf(ERROR, "unable to connect to '%s': %s", remote.sun_path, strerror(errno));
return -1;
}
return fd;
}
int send_string(int fd, const char* string)
{
int len = strlen(string);
int offset = 0;
int ret;
for(;;) {
ret = write(fd, &string[offset], len - offset);
if(ret < 0) {
if(errno != EINTR)
return ret;
ret = 0;
}
offset += ret;
if(offset+1 >= len)
break;
}
return ret;
}
int nonblock_recvline(read_buffer_t* buffer, int fd, cmd_t** cmd_q, client_t* client_lst, options_t* opt)
{
int ret = 0;
for(;;) {
ret = recv(fd, &buffer->buf[buffer->offset], 1, 0);
if(!ret)
return 2;
if(ret == -1 && errno == EAGAIN)
return 0;
else if(ret < 0)
break;
if(buffer->buf[buffer->offset] == '\n') {
buffer->buf[buffer->offset] = 0;
ret = process_cmd(buffer->buf, fd, cmd_q, client_lst, opt);
buffer->offset = 0;
break;
}
buffer->offset++;
if(buffer->offset >= sizeof(buffer->buf)) {
log_printf(DEBUG, "string too long (fd=%d)", fd);
buffer->offset = 0;
return 0;
}
}
return ret;
}
int setup_tty(int fd, speed_t speed)
{
struct termios tmio;
int ret = tcgetattr(fd, &tmio);
if(ret) {
log_printf(ERROR, "Error on tcgetattr(): %s", strerror(errno));
return ret;
}
// tmio.c_iflag |= ;
tmio.c_iflag &= ~(INLCR | ICRNL | IGNCR | IXON | IXOFF);
// tmio.c_oflag |= ;
tmio.c_oflag &= ~(ONLCR | OCRNL | ONOCR | ONLRET);
tmio.c_cflag |= CS8 | CLOCAL | CREAD;
tmio.c_cflag &= ~(CSTOPB | PARENB);
// tmio.c_lflag |= ;
tmio.c_lflag &= ~(ICANON | ECHO);
tmio.c_cc[VTIME] = 0;
tmio.c_cc[VMIN] = 1;
ret = cfsetospeed(&tmio, speed);
if(ret) {
log_printf(ERROR, "Error on cfsetospeed(): %s", strerror(errno));
return ret;
}
ret = cfsetispeed(&tmio, speed);
if(ret) {
log_printf(ERROR, "Error on cfsetispeed(): %s", strerror(errno));
return ret;
}
ret = tcsetattr(fd, TCSANOW, &tmio);
if(ret) {
log_printf(ERROR, "Error on tcsetattr(): %s", strerror(errno));
return ret;
}
ret = tcflush(fd, TCIFLUSH);
if(ret) {
log_printf(ERROR, "Error on tcflush(): %s", strerror(errno));
return ret;
}
fd_set fds;
struct timeval tv;
FD_ZERO(&fds);
FD_SET(fd, &fds);
tv.tv_sec = 0;
tv.tv_usec = 50000;
for(;;) {
ret = select(fd+1, &fds, NULL, NULL, &tv);
if(ret > 0) {
char buffer[100];
ret = read(fd, buffer, sizeof(buffer));
}
else
break;
}
return 0;
}
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