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/*
* lws-minimal-raw-proxy
*
* Written in 2010-2019 by Andy Green <andy@warmcat.com>
*
* This file is made available under the Creative Commons CC0 1.0
* Universal Public Domain Dedication.
*
* This demonstrates a vhost that acts as a raw tcp proxy. Incoming connections
* cause an outgoing connection to be initiated, and if successfully established
* then traffic coming in one side is placed on a ringbuffer and sent out the
* opposite side as soon as possible.
*/
#include <libwebsockets.h>
#include <string.h>
#include <signal.h>
#include <sys/types.h>
#define LWS_PLUGIN_STATIC
#include "../plugins/raw-proxy/protocol_lws_raw_proxy.c"
static struct lws_protocols protocols[] = {
LWS_PLUGIN_PROTOCOL_RAW_PROXY,
LWS_PROTOCOL_LIST_TERM
};
static int interrupted;
void sigint_handler(int sig)
{
interrupted = 1;
}
static struct lws_protocol_vhost_options pvo1 = {
NULL,
NULL,
"onward", /* pvo name */
"ipv4:127.0.0.1:22" /* pvo value */
};
static const struct lws_protocol_vhost_options pvo = {
NULL, /* "next" pvo linked-list */
&pvo1, /* "child" pvo linked-list */
"raw-proxy", /* protocol name we belong to on this vhost */
"" /* ignored */
};
int main(int argc, const char **argv)
{
int n = 0, logs = LLL_USER | LLL_ERR | LLL_WARN | LLL_NOTICE;
struct lws_context_creation_info info;
struct lws_context *context;
char outward[256];
const char *p;
signal(SIGINT, sigint_handler);
if ((p = lws_cmdline_option(argc, argv, "-d")))
logs = atoi(p);
lws_set_log_level(logs, NULL);
lwsl_user("LWS minimal raw proxy\n");
if ((p = lws_cmdline_option(argc, argv, "-r"))) {
lws_strncpy(outward, p, sizeof(outward));
pvo1.value = outward;
}
memset(&info, 0, sizeof info); /* otherwise uninitialized garbage */
info.port = 7681;
info.protocols = protocols;
info.pvo = &pvo;
info.options = LWS_SERVER_OPTION_ADOPT_APPLY_LISTEN_ACCEPT_CONFIG;
info.listen_accept_role = "raw-proxy";
info.listen_accept_protocol = "raw-proxy";
context = lws_create_context(&info);
if (!context) {
lwsl_err("lws init failed\n");
return 1;
}
while (n >= 0 && !interrupted)
n = lws_service(context, 0);
lws_context_destroy(context);
return 0;
}
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