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      1 /*
      2  * Hotspot 2.0 client - Web browser using wpadebug on Android
      3  * Copyright (c) 2013, Qualcomm Atheros, Inc.
      4  *
      5  * This software may be distributed under the terms of the BSD license.
      6  * See README for more details.
      7  */
      8 
      9 #include "includes.h"
     10 
     11 #include "common.h"
     12 #include "utils/eloop.h"
     13 #include "wps/http_server.h"
     14 #include "browser.h"
     15 
     16 
     17 struct browser_data {
     18 	int success;
     19 };
     20 
     21 
     22 static void browser_timeout(void *eloop_data, void *user_ctx)
     23 {
     24 	wpa_printf(MSG_INFO, "Timeout on waiting browser interaction to "
     25 		   "complete");
     26 	eloop_terminate();
     27 }
     28 
     29 
     30 static void http_req(void *ctx, struct http_request *req)
     31 {
     32 	struct browser_data *data = ctx;
     33 	struct wpabuf *resp;
     34 	const char *url;
     35 	int done = 0;
     36 
     37 	url = http_request_get_uri(req);
     38 	wpa_printf(MSG_INFO, "Browser response received: %s", url);
     39 
     40 	if (os_strcmp(url, "/") == 0) {
     41 		data->success = 1;
     42 		done = 1;
     43 	} else if (os_strncmp(url, "/osu/", 5) == 0) {
     44 		data->success = atoi(url + 5);
     45 		done = 1;
     46 	}
     47 
     48 	resp = wpabuf_alloc(100);
     49 	if (resp == NULL) {
     50 		http_request_deinit(req);
     51 		if (done)
     52 			eloop_terminate();
     53 		return;
     54 	}
     55 	wpabuf_put_str(resp, "HTTP/1.1\r\n\r\nUser input completed");
     56 
     57 	if (done) {
     58 		eloop_cancel_timeout(browser_timeout, NULL, NULL);
     59 		eloop_register_timeout(0, 500000, browser_timeout, &data, NULL);
     60 	}
     61 
     62 	http_request_send_and_deinit(req, resp);
     63 }
     64 
     65 
     66 int hs20_web_browser(const char *url)
     67 {
     68 	struct http_server *http;
     69 	struct in_addr addr;
     70 	struct browser_data data;
     71 	pid_t pid;
     72 
     73 	wpa_printf(MSG_INFO, "Launching wpadebug browser to %s", url);
     74 
     75 	os_memset(&data, 0, sizeof(data));
     76 
     77 	if (eloop_init() < 0) {
     78 		wpa_printf(MSG_ERROR, "eloop_init failed");
     79 		return -1;
     80 	}
     81 	addr.s_addr = htonl((127 << 24) | 1);
     82 	http = http_server_init(&addr, 12345, http_req, &data);
     83 	if (http == NULL) {
     84 		wpa_printf(MSG_ERROR, "http_server_init failed");
     85 		eloop_destroy();
     86 		return -1;
     87 	}
     88 
     89 	pid = fork();
     90 	if (pid < 0) {
     91 		wpa_printf(MSG_ERROR, "fork: %s", strerror(errno));
     92 		http_server_deinit(http);
     93 		eloop_destroy();
     94 		return -1;
     95 	}
     96 
     97 	if (pid == 0) {
     98 		/* run the external command in the child process */
     99 		char *argv[14];
    100 
    101 		argv[0] = "browser-wpadebug";
    102 		argv[1] = "start";
    103 		argv[2] = "-a";
    104 		argv[3] = "android.action.MAIN";
    105 		argv[4] = "-c";
    106 		argv[5] = "android.intent.category.LAUNCHER";
    107 		argv[6] = "-n";
    108 		argv[7] = "w1.fi.wpadebug/.WpaWebViewActivity";
    109 		argv[8] = "-e";
    110 		argv[9] = "w1.fi.wpadebug.URL";
    111 		argv[10] = (void *) url;
    112 		argv[11] = "--user";
    113 		argv[12] = "-3"; /* USER_CURRENT_OR_SELF */
    114 		argv[13] = NULL;
    115 
    116 		execv("/system/bin/am", argv);
    117 		wpa_printf(MSG_ERROR, "execv: %s", strerror(errno));
    118 		exit(0);
    119 		return -1;
    120 	}
    121 
    122 	eloop_register_timeout(300, 0, browser_timeout, &data, NULL);
    123 	eloop_run();
    124 	eloop_cancel_timeout(browser_timeout, &data, NULL);
    125 	http_server_deinit(http);
    126 	eloop_destroy();
    127 
    128 	wpa_printf(MSG_INFO, "Closing Android browser");
    129 	if (os_exec("/system/bin/am",
    130 		    "start -a android.action.MAIN "
    131 		    "-c android.intent.category.LAUNCHER "
    132 		    "-n w1.fi.wpadebug/.WpaWebViewActivity "
    133 		    "-e w1.fi.wpadebug.URL FINISH", 1) != 0) {
    134 		wpa_printf(MSG_INFO, "Failed to close wpadebug browser");
    135 	}
    136 
    137 	return data.success;
    138 }
    139