text: /*
   * Hotspot 2.0 client - Web browser using wpadebug on Android
   * Copyright (c) 2013, Qualcomm Atheros, Inc.
   *
   * This software may be distributed under the terms of the BSD license.
   * See README for more details.
   */
  
  #include "includes.h"
  
  #include "common.h"
  #include "utils/eloop.h"
  #include "wps/http_server.h"
  #include "browser.h"
  
  
  struct browser_data {
  	int success;
  };
  
  
  static void browser_timeout(void *eloop_data, void *user_ctx)
  {
  	wpa_printf(MSG_INFO, "Timeout on waiting browser interaction to "
  		   "complete");
  	eloop_terminate();
  }
  
  
  static void http_req(void *ctx, struct http_request *req)
  {
  	struct browser_data *data = ctx;
  	struct wpabuf *resp;
  	const char *url;
  	int done = 0;
  
  	url = http_request_get_uri(req);
  	wpa_printf(MSG_INFO, "Browser response received: %s", url);
  
  	if (os_strcmp(url, "/") == 0) {
  		data->success = 1;
  		done = 1;
  	} else if (os_strncmp(url, "/osu/", 5) == 0) {
  		data->success = atoi(url + 5);
  		done = 1;
  	}
  
  	resp = wpabuf_alloc(100);
  	if (resp == NULL) {
  		http_request_deinit(req);
  		if (done)
  			eloop_terminate();
  		return;
  	}
  	wpabuf_put_str(resp, "HTTP/1.1\r\n\r\nUser input completed");
  
  	if (done) {
  		eloop_cancel_timeout(browser_timeout, NULL, NULL);
  		eloop_register_timeout(0, 500000, browser_timeout, &data, NULL);
  	}
  
  	http_request_send_and_deinit(req, resp);
  }
  
  
  int hs20_web_browser(const char *url)
  {
  	struct http_server *http;
  	struct in_addr addr;
  	struct browser_data data;
  	pid_t pid;
  
  	wpa_printf(MSG_INFO, "Launching wpadebug browser to %s", url);
  
  	os_memset(&data, 0, sizeof(data));
  
  	if (eloop_init() < 0) {
  		wpa_printf(MSG_ERROR, "eloop_init failed");
  		return -1;
  	}
  	addr.s_addr = htonl((127 << 24) | 1);
  	http = http_server_init(&addr, 12345, http_req, &data);
  	if (http == NULL) {
  		wpa_printf(MSG_ERROR, "http_server_init failed");
  		eloop_destroy();
  		return -1;
  	}
  
  	pid = fork();
  	if (pid < 0) {
  		wpa_printf(MSG_ERROR, "fork: %s", strerror(errno));
  		http_server_deinit(http);
  		eloop_destroy();
  		return -1;
  	}
  
  	if (pid == 0) {
  		/* run the external command in the child process */
  		char *argv[14];
  
  		argv[0] = "browser-wpadebug";
  		argv[1] = "start";
  		argv[2] = "-a";
  		argv[3] = "android.action.MAIN";
  		argv[4] = "-c";
  		argv[5] = "android.intent.category.LAUNCHER";
  		argv[6] = "-n";
  		argv[7] = "w1.fi.wpadebug/.WpaWebViewActivity";
  		argv[8] = "-e";
  		argv[9] = "w1.fi.wpadebug.URL";
  		argv[10] = (void *) url;
  		argv[11] = "--user";
  		argv[12] = "-3"; /* USER_CURRENT_OR_SELF */
  		argv[13] = NULL;
  
  		execv("/system/bin/am", argv);
  		wpa_printf(MSG_ERROR, "execv: %s", strerror(errno));
  		exit(0);
  		return -1;
  	}
  
  	eloop_register_timeout(300, 0, browser_timeout, &data, NULL);
  	eloop_run();
  	eloop_cancel_timeout(browser_timeout, &data, NULL);
  	http_server_deinit(http);
  	eloop_destroy();
  
  	wpa_printf(MSG_INFO, "Closing Android browser");
  	if (os_exec("/system/bin/am",
  		    "start -a android.action.MAIN "
  		    "-c android.intent.category.LAUNCHER "
  		    "-n w1.fi.wpadebug/.WpaWebViewActivity "
  		    "-e w1.fi.wpadebug.URL FINISH", 1) != 0) {
  		wpa_printf(MSG_INFO, "Failed to close wpadebug browser");
  	}
  
  	return data.success;
  }
  