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add syslog backend support

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lxsang 2021-09-17 17:36:51 +02:00
parent ebffa3b3bc
commit 881f5b63c5
6 changed files with 325 additions and 2 deletions
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2
Makefile.am
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@ -15,7 +15,7 @@ install-data-local:
EXTRA_DIST = runner.ini runnerd tunnel.h antd-tunnel-publisher.service log.h
SUBDIRS = . vterm wfifo
SUBDIRS = . vterm wfifo syslog
if ENABLE_CAM
SUBDIRS += v4l2cam

73
build.json Normal file
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@ -0,0 +1,73 @@
{
"name": "antd-tunnel-publishers",
"targets":{
"configure": {
"require": ["linux"],
"jobs": [
{
"name": "linux-exec",
"data": {
"cmd":"libtoolize",
"pwd": "home://workspace/antd-tunnel-publishers"
}
},
{
"name": "linux-exec",
"data": {
"cmd":"aclocal",
"pwd": "home://workspace/antd-tunnel-publishers"
}
},
{
"name": "linux-exec",
"data": {
"cmd":"autoconf",
"pwd": "home://workspace/antd-tunnel-publishers"
}
},
{
"name": "linux-exec",
"data": {
"cmd":"automake --add-missing",
"pwd": "home://workspace/antd-tunnel-publishers"
}
},
{
"name": "linux-exec",
"data": {
"cmd":"./configure --prefix=/usr --enable-debug=no",
"pwd": "home://workspace/antd-tunnel-publishers"
}
}
]
},
"clean": {
"require": ["linux"],
"jobs": [
{
"name": "linux-exec",
"data": {
"cmd":"make clean",
"pwd": "home://workspace/antd-tunnel-publishers"
}
}
]
},
"build": {
"require": ["linux"],
"jobs": [
{
"name": "linux-exec",
"data": {
"cmd":"make",
"pwd": "home://workspace/antd-tunnel-publishers"
}
}
]
},
"clean and build": {
"depend": ["clean", "build"],
"jobs": []
}
}
}

1
configure.ac
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@ -88,6 +88,7 @@ AC_CONFIG_FILES([
Makefile
vterm/Makefile
wfifo/Makefile
syslog/Makefile
])
if test x"${cam_enable}" == x"yes" ; then

12
syslog/Makefile.am Normal file
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@ -0,0 +1,12 @@
AUTOMAKE_OPTIONS = foreign
AM_CPPFLAGS = -W -Wall -g -std=c99
# bin
bin_PROGRAMS = syslogb
# source files
syslogb_SOURCES = syslog.c ../tunnel.c
syslogb_CPPFLAGS= -I../
# antd_LDADD = libantd.la

237
syslog/syslog.c Normal file
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@ -0,0 +1,237 @@
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <signal.h>
#include <errno.h>
#include <fcntl.h>
#include <sys/select.h>
#include <sys/ioctl.h>
#include <sys/wait.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <arpa/inet.h>
#include <antd/list.h>
#include <antd/bst.h>
#include <antd/utils.h>
#include "../tunnel.h"
#define MODULE_NAME "syslogb"
static bst_node_t *clients = NULL;
static volatile int running = 1;
static void int_handler(int dummy)
{
(void)dummy;
running = 0;
}
static void send_data(bst_node_t *node, void **argv, int argc)
{
(void)argc;
tunnel_msg_t *msg = (tunnel_msg_t *)argv[0];
int *fd = (int *)argv[1];
msg->header.client_id = node->key;
if (msg_write(*fd, msg) == -1)
{
M_ERROR(MODULE_NAME, "Unable to write data message to client %d", node->key);
}
}
static void unsubscribe(bst_node_t *node, void **args, int argc)
{
(void)argc;
tunnel_msg_t msg;
int *ufd = (int *)args[0];
msg.header.type = CHANNEL_UNSUBSCRIBE;
msg.header.client_id = node->key;
msg.header.size = 0;
if (msg_write(*ufd, &msg) == -1)
{
M_ERROR(MODULE_NAME, "Unable to request unsubscribe to client %d", node->key);
}
}
int main(int argc, char **argv)
{
int fd, sock_fd;
tunnel_msg_t msg;
fd_set fd_in;
int status, maxfd, length;
char buff[BUFFLEN + 1];
void *fargv[2];
struct sockaddr_un saddr, caddr;
uint8_t *tmp;
LOG_INIT(MODULE_NAME);
if (argc != 4)
{
printf("Usage: %s path/to/hotline/socket channel_name input_file\n", argv[0]);
return -1;
}
signal(SIGPIPE, SIG_IGN);
signal(SIGABRT, SIG_IGN);
signal(SIGINT, int_handler);
// create the unix domain socket
(void)unlink(argv[3]);
if ((sock_fd = socket(AF_UNIX, SOCK_DGRAM, 0)) < 0) {
M_ERROR(MODULE_NAME, "Unable to create socket %s: %s", argv[3], strerror(errno));
return -1;
}
/* bind to the socket path */
saddr.sun_family = AF_UNIX;
snprintf(saddr.sun_path, (strlen(argv[3])+1), "%s", argv[3]);
if (0 != (bind(sock_fd, (struct sockaddr *)&saddr, sizeof(struct sockaddr_un)))) {
M_ERROR(MODULE_NAME, "Unable to bind socket %s: %s", argv[3], strerror(errno));
(void) close(sock_fd);
return -1;
}
(void)chmod(argv[3], 0777);
M_LOG(MODULE_NAME, "Unix domain socket: %s created", argv[3]);
M_LOG(MODULE_NAME, "Hotline is: %s", argv[1]);
// now try to request new channel from hotline
fd = open_unix_socket(argv[1]);
if (fd == -1)
{
M_ERROR(MODULE_NAME, "Unable to open the hotline: %s", argv[1]);
(void)close(sock_fd);
return -1;
}
msg.header.type = CHANNEL_OPEN;
msg.header.channel_id = 0;
msg.header.client_id = 0;
M_LOG(MODULE_NAME, "Request to open the channel %s", argv[2]);
(void)strncpy(buff, argv[2], MAX_CHANNEL_NAME);
msg.header.size = strlen(buff);
msg.data = (uint8_t *)buff;
if (msg_write(fd, &msg) == -1)
{
M_ERROR(MODULE_NAME, "Unable to write message to hotline");
(void)close(fd);
(void)close(sock_fd);
return -1;
}
M_LOG(MODULE_NAME, "Wait for comfirm creation of %s", argv[2]);
// now wait for message
if (msg_read(fd, &msg) == -1)
{
M_ERROR(MODULE_NAME, "Unable to read message from hotline");
(void)close(fd);
(void)close(sock_fd);
return -1;
}
if (msg.header.type == CHANNEL_OK)
{
M_LOG(MODULE_NAME, "Channel created: %s", argv[2]);
if (msg.data)
free(msg.data);
}
else
{
M_ERROR(MODULE_NAME, "Channel is not created: %s. Tunnel service responds with msg of type %d", argv[2], msg.header.type);
if (msg.data)
free(msg.data);
running = 0;
}
length = sizeof(struct sockaddr_un);
// now read data
while (running)
{
FD_ZERO(&fd_in);
FD_SET(fd, &fd_in);
FD_SET(sock_fd, &fd_in);
maxfd = fd > sock_fd ? fd : sock_fd;
status = select(maxfd + 1, &fd_in, NULL, NULL, NULL);
switch (status)
{
case -1:
M_LOG(MODULE_NAME, "Error %d on select()\n", errno);
running = 0;
break;
case 0:
break;
// we have data
default:
if (FD_ISSET(fd, &fd_in))
{
if (msg_read(fd, &msg) == -1)
{
M_ERROR(MODULE_NAME, "Unable to read message from channel. quit");
running = 0;
}
else
{
switch (msg.header.type)
{
case CHANNEL_SUBSCRIBE:
M_LOG(MODULE_NAME, "Client %d subscribes to the chanel", msg.header.client_id);
clients = bst_insert(clients, msg.header.client_id, NULL);
break;
case CHANNEL_UNSUBSCRIBE:
M_LOG(MODULE_NAME, "Client %d unsubscribes to the chanel", msg.header.client_id);
clients = bst_delete(clients, msg.header.client_id);
break;
default:
M_LOG(MODULE_NAME, "Client %d send message of type %d",
msg.header.client_id, msg.header.type);
break;
}
if (msg.data)
{
free(msg.data);
}
}
}
else if (FD_ISSET(sock_fd, &fd_in))
{
// read data to buffer
memset(buff, 0, sizeof(buff));
status = recvfrom(sock_fd, buff, sizeof(buff) -1 , 0, (struct sockaddr *)&caddr, &length);
// on the fifo side
if (status == -1)
{
M_ERROR(MODULE_NAME, "Unable to read data from the UDP socket %s: %s", argv[3], strerror(errno));
running = 0;
}
else
{
msg.header.type = CHANNEL_DATA;
msg.header.size = status;
msg.data = (uint8_t *)buff;
fargv[0] = (void *)&msg;
fargv[1] = (void *)&fd;
bst_for_each(clients, send_data, fargv, 2);
}
}
}
}
// unsubscribe all client
fargv[0] = (void *)&fd;
bst_for_each(clients, unsubscribe, fargv, 1);
// close the channel
M_LOG(MODULE_NAME, "Close the channel %s (%d)", argv[2], fd);
msg.header.type = CHANNEL_CLOSE;
msg.header.size = 0;
msg.data = NULL;
if (msg_write(fd, &msg) == -1)
{
M_ERROR(MODULE_NAME, "Unable to request channel close");
}
// close all opened terminal
(void)msg_read(fd, &msg);
(void)close(fd);
(void)close(sock_fd);
return 0;
}

2
wfifo/wfifo.c
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@ -65,7 +65,7 @@ int main(int argc, char **argv)
if (argc != 5)
{
printf("Usage: %s path/to/hotline/socket channel_name input_file\n", argv[0]);
printf("Usage: %s path/to/hotline/socket channel_name input_file r/w\n", argv[0]);
return -1;
}
signal(SIGPIPE, SIG_IGN);