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      1 /*
      2  * Hotspot 2.0 client - Web browser using system browser
      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(1);
     49 	if (resp == NULL) {
     50 		http_request_deinit(req);
     51 		if (done)
     52 			eloop_terminate();
     53 		return;
     54 	}
     55 
     56 	if (done) {
     57 		eloop_cancel_timeout(browser_timeout, NULL, NULL);
     58 		eloop_register_timeout(0, 500000, browser_timeout, &data, NULL);
     59 	}
     60 
     61 	http_request_send_and_deinit(req, resp);
     62 }
     63 
     64 
     65 int hs20_web_browser(const char *url)
     66 {
     67 	struct http_server *http;
     68 	struct in_addr addr;
     69 	struct browser_data data;
     70 	pid_t pid;
     71 
     72 	wpa_printf(MSG_INFO, "Launching system browser to %s", url);
     73 
     74 	os_memset(&data, 0, sizeof(data));
     75 
     76 	if (eloop_init() < 0) {
     77 		wpa_printf(MSG_ERROR, "eloop_init failed");
     78 		return -1;
     79 	}
     80 	addr.s_addr = htonl((127 << 24) | 1);
     81 	http = http_server_init(&addr, 12345, http_req, &data);
     82 	if (http == NULL) {
     83 		wpa_printf(MSG_ERROR, "http_server_init failed");
     84 		eloop_destroy();
     85 		return -1;
     86 	}
     87 
     88 	pid = fork();
     89 	if (pid < 0) {
     90 		wpa_printf(MSG_ERROR, "fork: %s", strerror(errno));
     91 		http_server_deinit(http);
     92 		eloop_destroy();
     93 		return -1;
     94 	}
     95 
     96 	if (pid == 0) {
     97 		/* run the external command in the child process */
     98 		char *argv[3];
     99 
    100 		argv[0] = "browser-system";
    101 		argv[1] = (void *) url;
    102 		argv[2] = NULL;
    103 
    104 		execv("/usr/bin/x-www-browser", argv);
    105 		wpa_printf(MSG_ERROR, "execv: %s", strerror(errno));
    106 		exit(0);
    107 		return -1;
    108 	}
    109 
    110 	eloop_register_timeout(120, 0, browser_timeout, &data, NULL);
    111 	eloop_run();
    112 	eloop_cancel_timeout(browser_timeout, &data, NULL);
    113 	http_server_deinit(http);
    114 	eloop_destroy();
    115 
    116 	/* TODO: Close browser */
    117 
    118 	return data.success;
    119 }
    120