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1 | /* | |
2 | * viking -- GPS Data and Topo Analyzer, Explorer, and Manager | |
3 | * | |
4 | * Copyright (C) 2003-2005, Evan Battaglia <gtoevan@gmx.net> | |
5 | * | |
6 | * This program is free software; you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation; either version 2 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program; if not, write to the Free Software | |
18 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
19 | * | |
20 | */ | |
21 | ||
22 | #include <unistd.h> | |
23 | ||
24 | #ifdef HAVE_CONFIG_H | |
25 | #include "config.h" | |
26 | #endif | |
27 | ||
28 | #include <gtk/gtk.h> | |
29 | ||
30 | #ifdef HAVE_LIBCURL | |
31 | #include <curl/curl.h> | |
32 | ||
33 | #include "file.h" | |
34 | #include "curl_download.h" | |
35 | ||
36 | static gchar *get_cookie_file(gboolean init) | |
37 | { | |
38 | static gchar *cookie_file = NULL; | |
39 | static GMutex *mutex = NULL; | |
40 | ||
41 | if (init) { /* to make sure it's thread safe */ | |
42 | mutex = g_mutex_new(); | |
43 | static gchar *cookie_fn = "cookies.txt"; | |
44 | const gchar *viking_dir = a_get_viking_dir(); | |
45 | cookie_file = g_strdup_printf("%s/%s", viking_dir, cookie_fn); | |
46 | unlink(cookie_file); | |
47 | return NULL; | |
48 | } | |
49 | ||
50 | g_assert(cookie_file != NULL); | |
51 | ||
52 | g_mutex_lock(mutex); | |
53 | if (access(cookie_file, F_OK)) { /* file not there */ | |
54 | FILE * out_file = fopen("/dev/null", "w"); | |
55 | CURLcode res; | |
56 | CURL *curl = curl_easy_init(); | |
57 | curl_easy_setopt(curl, CURLOPT_URL, "http://maps.google.com/"); /* google.com sets "PREF" cookie */ | |
58 | curl_easy_setopt ( curl, CURLOPT_FILE, out_file ); | |
59 | curl_easy_setopt(curl, CURLOPT_COOKIEJAR, cookie_file); | |
60 | res = curl_easy_perform(curl); | |
61 | if (res != CURLE_OK) { | |
62 | fprintf(stderr, "%s() Curl perform failed: %s\n", __PRETTY_FUNCTION__, | |
63 | curl_easy_strerror(res)); | |
64 | unlink(cookie_file); | |
65 | } | |
66 | curl_easy_cleanup(curl); | |
67 | } | |
68 | g_mutex_unlock(mutex); | |
69 | ||
70 | return(cookie_file); | |
71 | } | |
72 | ||
73 | /* This should to be called from main() to make sure thread safe */ | |
74 | void curl_download_init() | |
75 | { | |
76 | curl_global_init(CURL_GLOBAL_ALL); | |
77 | get_cookie_file(TRUE); | |
78 | } | |
79 | ||
80 | int curl_download_uri ( const char *uri, FILE *f, DownloadOptions *options ) | |
81 | { | |
82 | CURL *curl; | |
83 | CURLcode res = CURLE_FAILED_INIT; | |
84 | const gchar *cookie_file; | |
85 | ||
86 | curl = curl_easy_init (); | |
87 | if ( curl ) | |
88 | { | |
89 | curl_easy_setopt ( curl, CURLOPT_URL, uri ); | |
90 | curl_easy_setopt ( curl, CURLOPT_FILE, f ); | |
91 | if (options != NULL && options->referer != NULL) | |
92 | curl_easy_setopt ( curl, CURLOPT_REFERER, options->referer); | |
93 | curl_easy_setopt ( curl, CURLOPT_USERAGENT, "viking/" VERSION " libcurl/7.15.4" ); | |
94 | if (cookie_file = get_cookie_file(FALSE)) | |
95 | curl_easy_setopt(curl, CURLOPT_COOKIEFILE, cookie_file); | |
96 | res = curl_easy_perform ( curl ); | |
97 | curl_easy_cleanup ( curl ); | |
98 | } | |
99 | return(res); | |
100 | } | |
101 | ||
102 | int curl_download_get_url ( const char *hostname, const char *uri, FILE *f, DownloadOptions *options ) | |
103 | { | |
104 | int ret; | |
105 | gchar *full = NULL; | |
106 | ||
107 | /* Compose the full url */ | |
108 | full = g_strdup_printf ( "http://%s%s", hostname, uri ); | |
109 | ret = curl_download_uri ( full, f, options ); | |
110 | g_free ( full ); | |
111 | full = NULL; | |
112 | ||
113 | return (ret ? -2 : 0); /* -2 HTTP error */ | |
114 | } | |
115 | #endif /* HAVE_LIB_CURL */ |