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 
browser_timeout(void * eloop_data,void * user_ctx)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 
http_req(void * ctx,struct http_request * req)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 
hs20_web_browser(const char * url,int ignore_tls)65 int hs20_web_browser(const char *url, int ignore_tls)
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