mirror of
https://github.com/lxsang/antd-tunnel-plugin
synced 2024-12-26 09:58:21 +01:00
initial comit
This commit is contained in:
lxsang
commit
eb085f27a4
19
Makefile.am
Normal file
19
Makefile.am
Normal file
@ -0,0 +1,19 @@
|
||||
AUTOMAKE_OPTIONS = foreign
|
||||
|
||||
|
||||
|
||||
# check for system
|
||||
if LINUX
|
||||
AM_CPPFLAGS = -Wl,--no-as-needed
|
||||
else
|
||||
AM_CPPFLAGS = -Wl,-undefined,dynamic_lookup
|
||||
endif
|
||||
|
||||
|
||||
AM_CPPFLAGS += -W -Wall -g -std=c99 -fPIC
|
||||
|
||||
lib_LTLIBRARIES = tunnel.la
|
||||
wterm_la_LDFLAGS = -module -avoid-version -shared
|
||||
wterm_la_SOURCES = tunnel.c
|
||||
|
||||
EXTRA_DIST = README.md
|
||||
50
README.md
Normal file
50
README.md
Normal file
@ -0,0 +1,50 @@
|
||||
# antd-wterm-plugin
|
||||
**wterm** is an [antd plugin](https://github.com/lxsang/ant-http) providing the Terminal gateway to the web using websocket.
|
||||
|
||||
## Build from source
|
||||
As **wterm** is an **Antd's** plugin, the server must be pre-installed
|
||||
|
||||
### build dep
|
||||
* git
|
||||
* make
|
||||
* build-essential
|
||||
|
||||
|
||||
### build
|
||||
When all dependencies are installed, the build can be done with a few single command lines:
|
||||
|
||||
```bash
|
||||
mkdir antd
|
||||
cd antd
|
||||
# replace x.x.x by a version number
|
||||
wget -O- https://get.bitdojo.dev/antd_plugin | bash -s "wterm-x.x.x"
|
||||
|
||||
# or install from a tarball distribution in dist/
|
||||
tar xvzf wterm-x.x.x.tar.gz
|
||||
cd wterm-x.x.x
|
||||
./configure --prefix=/opt/www --enable-debug=yes
|
||||
make
|
||||
sudo make install
|
||||
```
|
||||
|
||||
|
||||
## Run
|
||||
To run the Antd server with the **wterm** plugin:
|
||||
```sh
|
||||
/path/to/your/build/antd
|
||||
```
|
||||
|
||||
Web applications can be put on **/path/to/your/build/htdocs**, the web socket to **wterm** is available at:
|
||||
```
|
||||
ws://your_host:your_port/wterm
|
||||
```
|
||||
This websocket address can be used with [xterm.js](https://xtermjs.org) to provide web based termnial access
|
||||
|
||||
### Generate distribution
|
||||
```sh
|
||||
libtoolize
|
||||
aclocal
|
||||
autoconf
|
||||
automake --add-missing
|
||||
make distcheck
|
||||
```
|
||||
84
configure.ac
Normal file
84
configure.ac
Normal file
@ -0,0 +1,84 @@
|
||||
# initialise autoconf and set up some basic information about the program we’re packaging
|
||||
AC_INIT([tunnel], [0.1.0b], [xsang.le@gmail.com])
|
||||
|
||||
# We’re going to use automake for this project
|
||||
# [subdir-objects] if needed
|
||||
AM_INIT_AUTOMAKE()
|
||||
|
||||
# dependencies
|
||||
# C compiler
|
||||
AC_PROG_CC
|
||||
# libtool for linking
|
||||
AC_PROG_LIBTOOL
|
||||
|
||||
has_antd=no
|
||||
# check for lib antd
|
||||
AC_CHECK_HEADER([antd/plugin.h],[
|
||||
has_antd=yes
|
||||
# check if the library exists
|
||||
],[
|
||||
AC_MSG_ERROR([Unable to find antd, please install it first])
|
||||
])
|
||||
AC_CHECK_LIB([antd],[antd_send],[],[
|
||||
if test "$has_antd" = "yes"; then
|
||||
AC_MSG_ERROR([Unable to find antd shared library, please install it first])
|
||||
fi
|
||||
])
|
||||
|
||||
|
||||
# check for pthread
|
||||
AC_CHECK_LIB([pthread], [pthread_create], [], [
|
||||
AC_MSG_ERROR([libpthread is not found])])
|
||||
|
||||
# check for dl
|
||||
AC_CHECK_LIB([dl], [dlopen], [], [
|
||||
AC_MSG_ERROR([unable to find dlopen()])
|
||||
])
|
||||
|
||||
AC_DEFINE([_GNU_SOURCE], [1],[Use GNU source])
|
||||
# AC_CANONICAL_HOST is needed to access the 'host_os' variable
|
||||
|
||||
# debug option
|
||||
AC_ARG_ENABLE([debug],
|
||||
[ --enable-debug Turn on debugging],
|
||||
[case "${enableval}" in
|
||||
yes) AC_DEFINE([DEBUG], [1],[Enable debug]) ;;
|
||||
no) ;;
|
||||
*) AC_MSG_ERROR([bad value ${enableval} for --enable-debug]) ;;
|
||||
esac],[debug=false])
|
||||
|
||||
AC_CANONICAL_HOST
|
||||
build_linux=no
|
||||
build_windows=no
|
||||
build_mac=no
|
||||
# Detect the target system
|
||||
case "${host_os}" in
|
||||
linux*)
|
||||
AC_DEFINE([LINUX], [1],[Linux system])
|
||||
build_linux=yes
|
||||
;;
|
||||
darwin*)
|
||||
build_mac=yes
|
||||
AC_DEFINE([MACOS], [1],[MacOS system])
|
||||
;;
|
||||
*)
|
||||
AC_MSG_ERROR(["OS $host_os is not supported"])
|
||||
;;
|
||||
esac
|
||||
# case for window:
|
||||
# cygwin*|mingw*)
|
||||
# build_windows=yes
|
||||
# ;;
|
||||
# Pass the conditionals to automake
|
||||
AM_CONDITIONAL([DB], [test "$use_db" = "yes"])
|
||||
AM_CONDITIONAL([LINUX], [test "$build_linux" = "yes"])
|
||||
AM_CONDITIONAL([WINDOWS], [test "$build_windows" = "yes"])
|
||||
AM_CONDITIONAL([OSX], [test "$build_mac" = "yes"])
|
||||
|
||||
# find a file called Makefile.in, substitute placeholders
|
||||
# like @PACKAGE_VERSION@ with values like 0.1.0a,
|
||||
# and write the results to Makefile.
|
||||
AC_CONFIG_FILES([Makefile])
|
||||
|
||||
# output the script:
|
||||
AC_OUTPUT
|
||||
388
tunnel.c
Normal file
388
tunnel.c
Normal file
@ -0,0 +1,388 @@
|
||||
#define PLUGIN_IMPLEMENT 1
|
||||
#include <stdlib.h>
|
||||
#include <errno.h>
|
||||
#include <unistd.h>
|
||||
#include <stdio.h>
|
||||
#include <termios.h>
|
||||
#include <string.h>
|
||||
#include <antd/plugin.h>
|
||||
#include <semaphore.h>
|
||||
#include <pthread.h>
|
||||
#include <sys/socket.h>
|
||||
#include <sys/un.h>
|
||||
|
||||
#define MAX_CHANNEL_PATH 108
|
||||
#define MAX_CHANNEL_NAME 64
|
||||
#define HOT_LINE_SOCKET "antd_hotline.sock"
|
||||
#define SOCK_DIR_NAME "channels"
|
||||
#define MSG_MAGIC_BEGIN 0x414e5444 //ANTD
|
||||
#define MSG_MAGIC_END 0x44544e41 //DTNA
|
||||
|
||||
#define CHANNEL_OK (uint8_t)0x0
|
||||
#define CHANNEL_ERROR (uint8_t)0x1
|
||||
#define CHANNEL_SUBSCRIBE (uint8_t)0x2
|
||||
#define CHANNEL_UNSUBSCRIBE (uint8_t)0x3
|
||||
#define CHANNEL_OPEN (uint8_t)0x4
|
||||
#define CHANNEL_CLOSE (uint8_t)0x5
|
||||
#define CHANNEL_DATA (uint8_t)0x6
|
||||
|
||||
typedef struct {
|
||||
int sock;
|
||||
char sun_path[MAX_CHANNEL_PATH];
|
||||
list_t subscribers;
|
||||
} antd_tunnel_channel_t;
|
||||
|
||||
typedef struct {
|
||||
uint8_t type;
|
||||
int size;
|
||||
char channel[MAX_CHANNEL_NAME];
|
||||
} antd_tunnel_msg_h_t;
|
||||
|
||||
typedef struct{
|
||||
antd_tunnel_msg_h_t header;
|
||||
uint8_t data;
|
||||
} antd_tunnel_msg_t;
|
||||
/**
|
||||
* Message is sent in the following format
|
||||
* |BEGIN MAGIC(4)|MSG TYPE(1)| CHANNEL LENGTH (1)| CHANNEL(n)| data length (4)| data(m) | END MAGIC(4)|
|
||||
*/
|
||||
|
||||
typedef struct {
|
||||
pthread_mutex_t lock;
|
||||
dictionary_t channels;
|
||||
pthread_t tid;
|
||||
int hotline;
|
||||
} antd_tunnel_t;
|
||||
|
||||
static antd_tunnel_t g_tunnel;
|
||||
|
||||
static int subscribe_to(const char* channel, antd_request_t* identifier);
|
||||
|
||||
static int msg_check_number(int fd, int number)
|
||||
{
|
||||
int value;
|
||||
if(read(fd,&value,sizeof(value)) == -1)
|
||||
{
|
||||
ERROR("Unable to read integer value: %s", strerror(errno));
|
||||
return -1;
|
||||
}
|
||||
if(number != value)
|
||||
{
|
||||
ERROR("Value mismatches: %0x%04X, expected %0x%04X", value, number);
|
||||
return -1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
static int msg_read_string(int fd, char* buffer, uint8_t max_length)
|
||||
{
|
||||
uint8_t size;
|
||||
if(read(fd,&size,sizeof(size)) == -1)
|
||||
{
|
||||
ERROR("Unable to read string size: %s", strerror(errno));
|
||||
return -1;
|
||||
}
|
||||
if(size > max_length)
|
||||
{
|
||||
ERROR("String length exceeds the maximal value of ", max_length);
|
||||
return -1;
|
||||
}
|
||||
if(read(fd,buffer,size) == -1)
|
||||
{
|
||||
ERROR("Unable to read string to buffer: %s", strerror(errno));
|
||||
return -1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static char* msg_read_payload(int fd, int* size)
|
||||
{
|
||||
char* data;
|
||||
if(read(fd,size,sizeof(size)) == -1)
|
||||
{
|
||||
ERROR("Unable to read payload data size: %s", strerror(errno));
|
||||
return NULL;
|
||||
}
|
||||
data = (char*) malloc(*size);
|
||||
if(data == NULL)
|
||||
{
|
||||
ERROR("Unable to allocate memory for payload data: %s", strerror(errno));
|
||||
return NULL;
|
||||
}
|
||||
if(read(fd,data,*size) == -1)
|
||||
{
|
||||
ERROR("Unable to read payload data to buffer: %s", strerror(errno));
|
||||
free(data);
|
||||
return NULL;
|
||||
}
|
||||
return data;
|
||||
}
|
||||
|
||||
static int msg_read(int fd, antd_tunnel_msg_t* msg)
|
||||
{
|
||||
if(msg_check_number(fd, MSG_MAGIC_BEGIN) == -1)
|
||||
{
|
||||
ERROR("Unable to check begin magic number");
|
||||
return -1;
|
||||
}
|
||||
if(read(fd,&msg->header.type,sizeof(msg->header.type)) == -1)
|
||||
{
|
||||
ERROR("Unable to read msg type: %s", strerror(errno));
|
||||
return -1;
|
||||
}
|
||||
if(msg->header.type > 0x6)
|
||||
{
|
||||
ERROR("Unknown msg type: %d", msg->header.type);
|
||||
return -1;
|
||||
}
|
||||
if(msg_read_string(fd, msg->header.channel,MAX_CHANNEL_NAME) == -1)
|
||||
{
|
||||
ERROR("Unable to read msg channel");
|
||||
return -1;
|
||||
}
|
||||
if((msg->data = msg_read_payload(fd, &msg->header.size)) == NULL)
|
||||
{
|
||||
ERROR("Unable to read msg payload data");
|
||||
return -1;
|
||||
}
|
||||
if(msg_check_number(fd, MSG_MAGIC_END) == -1)
|
||||
{
|
||||
if(msg->data)
|
||||
{
|
||||
free(msg->data);
|
||||
}
|
||||
ERROR("Unable to check end magic number");
|
||||
return -1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int msg_write(int fd, antd_tunnel_msg_t* msg)
|
||||
{
|
||||
// write begin magic number
|
||||
int number = MSG_MAGIC_BEGIN;
|
||||
uint8_t slen;
|
||||
if(write(fd,&number, sizeof(number)) == -1)
|
||||
{
|
||||
ERROR("Unable to write begin magic number: %s", strerror(errno));
|
||||
return -1;
|
||||
}
|
||||
// write type
|
||||
if(write(fd,&msg->header.type, sizeof(msg->header.type)) == -1)
|
||||
{
|
||||
ERROR("Unable to write msg type: %s", strerror(errno));
|
||||
return -1;
|
||||
}
|
||||
// write channel len
|
||||
slen = strlen(msg->header.channel);
|
||||
if(write(fd,&slen, sizeof(slen)) == -1)
|
||||
{
|
||||
ERROR("Unable to write msg channel len: %s", strerror(errno));
|
||||
return -1;
|
||||
}
|
||||
//write channel.
|
||||
if(write(fd,msg->header.channel, slen) == -1)
|
||||
{
|
||||
ERROR("Unable to write msg channel: %s", strerror(errno));
|
||||
return -1;
|
||||
}
|
||||
// write payload len
|
||||
if(write(fd,&msg->header.size, sizeof(msg->header.size)) == -1)
|
||||
{
|
||||
ERROR("Unable to write msg payload length: %s", strerror(errno));
|
||||
return -1;
|
||||
}
|
||||
// write payload data
|
||||
if(write(fd,msg->data, msg->header.size) == -1)
|
||||
{
|
||||
ERROR("Unable to write msg payload: %s", strerror(errno));
|
||||
return -1;
|
||||
}
|
||||
number = MSG_MAGIC_END;
|
||||
if(write(fd,&number, sizeof(number)) == -1)
|
||||
{
|
||||
ERROR("Unable to write begin end number: %s", strerror(errno));
|
||||
return -1;
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void multiplex(antd_tunnel_t* tunnel_p)
|
||||
{
|
||||
int max_fdm, status;
|
||||
fd_set fd_in;
|
||||
int status = 0;
|
||||
struct timeval timeout;
|
||||
int rc;
|
||||
chain_t it;
|
||||
antd_tunnel_channel_t* channel;
|
||||
while(status == 0)
|
||||
{
|
||||
timeout.tv_sec = 0;
|
||||
timeout.tv_usec = 500;
|
||||
FD_ZERO(&fd_in);
|
||||
FD_SET(tunnel_p->hotline, &fd_in);
|
||||
max_fdm = tunnel_p->hotline;
|
||||
pthread_mutex_lock(&tunnel_p->lock);
|
||||
for_each_assoc(it,tunnel_p->channels)
|
||||
{
|
||||
channel = (antd_tunnel_channel_t*) it->value;
|
||||
if(channel != NULL)
|
||||
{
|
||||
FD_SET(channel->sock, &fd_in);
|
||||
max_fdm = channel->sock > max_fdm ? channel->sock : max_fdm;
|
||||
}
|
||||
}
|
||||
pthread_mutex_unlock(&tunnel_p->lock);
|
||||
rc = select(max_fdm + 1, &fd_in, NULL, NULL, &timeout);
|
||||
switch (rc)
|
||||
{
|
||||
case -1:
|
||||
LOG("Error %d on select()\n", errno);
|
||||
status = 1;
|
||||
break;
|
||||
case 0:
|
||||
// time out
|
||||
// sleep here
|
||||
break;
|
||||
// we have data
|
||||
default:
|
||||
if(FD_ISSET(tunnel_p->hotline, &fd_in))
|
||||
{
|
||||
monitor_hotline(tunnel_p->hotline);
|
||||
}
|
||||
pthread_mutex_lock(&tunnel_p->lock);
|
||||
for_each_assoc(it,tunnel_p->channels)
|
||||
{
|
||||
channel = (antd_tunnel_channel_t*) it->value;
|
||||
if(channel != NULL)
|
||||
{
|
||||
if(FD_ISSET(channel->sock, &fd_in))
|
||||
{
|
||||
handle_channel(channel);
|
||||
}
|
||||
}
|
||||
}
|
||||
pthread_mutex_unlock(&tunnel_p->lock);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static int mk_socket(const char* path, uint8_t client)
|
||||
{
|
||||
struct sockaddr_un address;
|
||||
address.sun_family = AF_UNIX;
|
||||
(void) strncpy(address.sun_path, path, sizeof(address.sun_path));
|
||||
int fd = socket(AF_UNIX, SOCK_STREAM, 0);
|
||||
if(fd == -1)
|
||||
{
|
||||
ERROR("Unable to create Unix domain socket: %s", strerror(errno));
|
||||
return -1;
|
||||
}
|
||||
if(client) // client side socket
|
||||
{
|
||||
if (connect(fd, (struct sockaddr*)&address, sizeof(address)) == -1)
|
||||
{
|
||||
ERROR("Unable to connect to socket name: %s : %s", address.sun_path, strerror(errno));
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
else // server side socket
|
||||
{
|
||||
if(bind(fd, (struct sockaddr*)(&address), sizeof(address)) == -1)
|
||||
{
|
||||
ERROR("Unable to bind name: %s to a socket: %s", address.sun_path, strerror(errno));
|
||||
return -1;
|
||||
}
|
||||
// mark the socket as passive mode
|
||||
if(listen(fd , 100) == -1)
|
||||
{
|
||||
ERROR("Unable to listen to socket: %d (%s): %s",fd, path , strerror(errno));
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
LOG("Socket %s is created successfully", path);
|
||||
return fd;
|
||||
}
|
||||
|
||||
void init()
|
||||
{
|
||||
char path[MAX_CHANNEL_PATH];
|
||||
// initialise the lock
|
||||
(void) pthread_mutex_init(&g_tunnel.lock,NULL);
|
||||
// initialise the channel
|
||||
g_tunnel.channels = dict();
|
||||
g_tunnel.hotline = -1;
|
||||
// create the hotline socket
|
||||
(void)snprintf(path, MAX_CHANNEL_PATH,"%s/%s/",__plugin__.tmpdir, SOCK_DIR_NAME);
|
||||
|
||||
if(!_exist(path))
|
||||
{
|
||||
LOG("Socket dir does not exist, create it: %s",path);
|
||||
if(mkdir(path, 0700) == -1)
|
||||
{
|
||||
ERROR("Unable to create socket dir: %s =", strerror(errno));
|
||||
destroy();
|
||||
return -1;
|
||||
}
|
||||
}
|
||||
|
||||
// Append the name of the socket
|
||||
if(strlen(path) + strlen(HOT_LINE_SOCKET) > MAX_CHANNEL_PATH)
|
||||
{
|
||||
ERROR("Socket file path exceeds the maximal size of: %d", BUFFLEN);
|
||||
destroy();
|
||||
return -1;
|
||||
}
|
||||
(void)strcat(path, HOT_LINE_SOCKET);
|
||||
|
||||
if((g_tunnel.hotline = mk_socket(path, 0) == -1))
|
||||
{
|
||||
ERROR("Unable to create hotline socket");
|
||||
destroy();
|
||||
return;
|
||||
}
|
||||
|
||||
// create the thread
|
||||
if (pthread_create(&g_tunnel.tid, NULL,(void *(*)(void *))multiplex, (void*)&g_tunnel) != 0)
|
||||
{
|
||||
ERROR("pthread_create: cannot create tunnel multiplex thread: %s\n", strerror(errno));
|
||||
destroy();
|
||||
}
|
||||
}
|
||||
|
||||
void destroy()
|
||||
{
|
||||
char path[BUFFLEN];
|
||||
if(g_tunnel.tid != -1)
|
||||
pthread_join(g_tunnel.tid, NULL);
|
||||
pthread_mutex_destroy(&g_tunnel.lock);
|
||||
if(g_tunnel.hotline != -1)
|
||||
{
|
||||
(void) close(g_tunnel.hotline);
|
||||
(void) snprintf(path, BUFFLEN, "%s/%s/%s", __plugin__.tmpdir, SOCK_DIR_NAME, HOT_LINE_SOCKET);
|
||||
(void) unlink(path);
|
||||
}
|
||||
|
||||
if(g_tunnel.channels)
|
||||
{
|
||||
/** TODO: free the channel list first */
|
||||
freedict(g_tunnel.channels);
|
||||
g_tunnel.channels = NULL;
|
||||
}
|
||||
}
|
||||
|
||||
void *handle(void *rqdata)
|
||||
{
|
||||
antd_request_t *rq = (antd_request_t *)rqdata;
|
||||
antd_task_t *task = antd_create_task(NULL, (void *)rq, NULL, time(NULL));
|
||||
task->priority++;
|
||||
if(g_tunnel.tid == -1)
|
||||
{
|
||||
ERROR("The tunnel plugin is not initialised correctly");
|
||||
return task;
|
||||
}
|
||||
if (ws_enable(rq->request))
|
||||
{
|
||||
}
|
||||
return task;
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user