text: /*
   * lws-minimal-dbus-ws-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 minimal session dbus server that uses the lws event loop,
   * and allows proxying ws client connections via DBUS.
   */
  
  #include <stdbool.h>
  #include <string.h>
  #include <stdio.h>
  #include <stdlib.h>
  #include <unistd.h>
  #include <signal.h>
  
  #include <libwebsockets.h>
  #include <libwebsockets/lws-dbus.h>
  
  #define LWS_PLUGIN_STATIC
  #include "protocol_lws_minimal_dbus_ws_proxy.c"
  
  static int interrupted;
  static struct lws_protocols protocols[] = {
  	LWS_PLUGIN_PROTOCOL_MINIMAL_DBUS_WSPROXY,
  	{ NULL, NULL, 0, 0 } /* terminator */
  };
  
  /*
   * we pass the dbus address to connect to proxy with from outside the
   * protocol plugin... eg if built as a plugin for lwsws, you would instead
   * set this pvo in the lwsws JSON config.
   */
  
  static const struct lws_protocol_vhost_options pvo_ads = {
  	NULL,
  	NULL,
  	"ads",				/* pvo name */
  	(void *)"unix:abstract=org.libwebsockets.wsclientproxy"	/* pvo value */
  };
  
  static const struct lws_protocol_vhost_options pvo = {
  	NULL,				/* "next" pvo linked-list */
  	&pvo_ads,			/* "child" pvo linked-list */
  	"lws-minimal-dbus-wsproxy",	/* protocol name we belong to on this vhost */
  	""				/* ignored */
  };
  
  void sigint_handler(int sig)
  {
  	interrupted = 1;
  }
  
  int main(int argc, const char **argv)
  {
  	static struct lws_context *context;
  	struct lws_context_creation_info info;
  	const char *p;
  	int n = 0, logs = LLL_USER | LLL_ERR | LLL_WARN | LLL_NOTICE
  			/* for LLL_ verbosity above NOTICE to be built into lws,
  			 * lws must have been configured and built with
  			 * -DCMAKE_BUILD_TYPE=DEBUG instead of =RELEASE */
  			/* | LLL_INFO */ /* | LLL_PARSER */ /* | LLL_HEADER */
  			/* | LLL_EXT */ /* | LLL_CLIENT */ /* | LLL_LATENCY */
  			/* | LLL_DEBUG */ /* | LLL_THREAD */;
  
  	signal(SIGINT, sigint_handler);
  
  	if ((p = lws_cmdline_option(argc, argv, "-d")))
  		logs = atoi(p);
  
  	lws_set_log_level(logs, NULL);
  	lwsl_user("LWS DBUS ws client proxy\n");
  
  	memset(&info, 0, sizeof info); /* otherwise uninitialized garbage */
  	info.options = LWS_SERVER_OPTION_DO_SSL_GLOBAL_INIT |
  		LWS_SERVER_OPTION_HTTP_HEADERS_SECURITY_BEST_PRACTICES_ENFORCE;
  	info.port = CONTEXT_PORT_NO_LISTEN;
  	info.protocols = protocols;
  	info.pvo = &pvo;
  
  	context = lws_create_context(&info);
  	if (!context) {
  		lwsl_err("lws init failed\n");
  		return 1;
  	}
  
  	/* lws event loop (default poll one) */
  
  	while (n >= 0 && !interrupted)
  		n = lws_service(context, 0);
  
  	lws_context_destroy(context);
  
  	lwsl_notice("Exiting cleanly\n");
  
  	return 0;
  }
  