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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 | #ifdef HAVE_CONFIG_H | |
23 | #include "config.h" | |
24 | #endif | |
25 | ||
26 | #include <stdio.h> | |
27 | ||
28 | #include <glib.h> | |
29 | #include <glib/gstdio.h> | |
30 | #include <glib/gi18n.h> | |
31 | #include <gtk/gtk.h> | |
32 | ||
33 | #include <curl/curl.h> | |
34 | ||
35 | #include "file.h" | |
36 | #include "globals.h" | |
37 | #include "curl_download.h" | |
38 | ||
39 | /* | |
40 | * Even if writing to FILE* is supported by libcurl by default, | |
41 | * it seems that it is non-portable (win32 DLL specific). | |
42 | * | |
43 | * So, we provide our own trivial CURLOPT_WRITEFUNCTION. | |
44 | */ | |
45 | static size_t curl_write_func(void *ptr, size_t size, size_t nmemb, FILE *stream) | |
46 | { | |
47 | return fwrite(ptr, size, nmemb, stream); | |
48 | } | |
49 | ||
50 | static gchar *get_cookie_file(gboolean init) | |
51 | { | |
52 | static gchar *cookie_file = NULL; | |
53 | static GMutex *mutex = NULL; | |
54 | ||
55 | if (init) { /* to make sure it's thread safe */ | |
56 | mutex = g_mutex_new(); | |
57 | static gchar *cookie_fn = "cookies.txt"; | |
58 | const gchar *viking_dir = a_get_viking_dir(); | |
59 | cookie_file = g_build_filename(viking_dir, cookie_fn, NULL); | |
60 | g_unlink(cookie_file); | |
61 | return NULL; | |
62 | } | |
63 | ||
64 | g_assert(cookie_file != NULL); | |
65 | ||
66 | g_mutex_lock(mutex); | |
67 | if (g_file_test(cookie_file, G_FILE_TEST_EXISTS) == FALSE) { /* file not there */ | |
68 | gchar * name_tmp = NULL; | |
69 | FILE * out_file = tmpfile(); | |
70 | if (out_file == NULL) { | |
71 | // Something wrong with previous call (unsuported?) | |
72 | name_tmp = g_strdup_printf("%s.tmp", cookie_file); | |
73 | out_file = g_fopen(name_tmp, "w+b"); | |
74 | } | |
75 | CURLcode res; | |
76 | CURL *curl = curl_easy_init(); | |
77 | if (vik_verbose) | |
78 | curl_easy_setopt ( curl, CURLOPT_VERBOSE, 1 ); | |
79 | curl_easy_setopt(curl, CURLOPT_URL, "http://maps.google.com/"); /* google.com sets "PREF" cookie */ | |
80 | curl_easy_setopt ( curl, CURLOPT_FILE, out_file ); | |
81 | curl_easy_setopt ( curl, CURLOPT_WRITEFUNCTION, curl_write_func); | |
82 | curl_easy_setopt(curl, CURLOPT_COOKIEJAR, cookie_file); | |
83 | res = curl_easy_perform(curl); | |
84 | if (res != CURLE_OK) { | |
85 | g_warning(_("%s() Curl perform failed: %s"), __PRETTY_FUNCTION__, | |
86 | curl_easy_strerror(res)); | |
87 | g_unlink(cookie_file); | |
88 | } | |
89 | curl_easy_cleanup(curl); | |
90 | fclose(out_file); | |
91 | out_file = NULL; | |
92 | if (name_tmp != NULL) { | |
93 | g_remove(name_tmp); | |
94 | g_free(name_tmp); | |
95 | name_tmp = NULL; | |
96 | } | |
97 | } | |
98 | g_mutex_unlock(mutex); | |
99 | ||
100 | return(cookie_file); | |
101 | } | |
102 | ||
103 | /* This should to be called from main() to make sure thread safe */ | |
104 | void curl_download_init() | |
105 | { | |
106 | curl_global_init(CURL_GLOBAL_ALL); | |
107 | get_cookie_file(TRUE); | |
108 | } | |
109 | ||
110 | int curl_download_uri ( const char *uri, FILE *f, DownloadOptions *options ) | |
111 | { | |
112 | CURL *curl; | |
113 | CURLcode res = CURLE_FAILED_INIT; | |
114 | const gchar *cookie_file; | |
115 | ||
116 | g_debug("%s: uri=%s", __PRETTY_FUNCTION__, uri); | |
117 | ||
118 | curl = curl_easy_init (); | |
119 | if ( curl ) | |
120 | { | |
121 | if (vik_verbose) | |
122 | curl_easy_setopt ( curl, CURLOPT_VERBOSE, 1 ); | |
123 | curl_easy_setopt ( curl, CURLOPT_URL, uri ); | |
124 | curl_easy_setopt ( curl, CURLOPT_FILE, f ); | |
125 | curl_easy_setopt ( curl, CURLOPT_WRITEFUNCTION, curl_write_func); | |
126 | if (options != NULL) { | |
127 | if(options->referer != NULL) | |
128 | curl_easy_setopt ( curl, CURLOPT_REFERER, options->referer); | |
129 | if(options->follow_location != 0) { | |
130 | curl_easy_setopt ( curl, CURLOPT_FOLLOWLOCATION, 1); | |
131 | curl_easy_setopt ( curl, CURLOPT_MAXREDIRS, options->follow_location); | |
132 | } | |
133 | } | |
134 | curl_easy_setopt ( curl, CURLOPT_USERAGENT, PACKAGE "/" VERSION " libcurl/7.15.4" ); | |
135 | if ((cookie_file = get_cookie_file(FALSE)) != NULL) | |
136 | curl_easy_setopt(curl, CURLOPT_COOKIEFILE, cookie_file); | |
137 | res = curl_easy_perform ( curl ); | |
138 | curl_easy_cleanup ( curl ); | |
139 | } | |
140 | return(res); | |
141 | } | |
142 | ||
143 | int curl_download_get_url ( const char *hostname, const char *uri, FILE *f, DownloadOptions *options, gboolean ftp ) | |
144 | { | |
145 | int ret; | |
146 | gchar *full = NULL; | |
147 | ||
148 | /* Compose the full url */ | |
149 | full = g_strdup_printf ( "%s://%s%s", (ftp?"ftp":"http"), hostname, uri ); | |
150 | ret = curl_download_uri ( full, f, options ); | |
151 | g_free ( full ); | |
152 | full = NULL; | |
153 | ||
154 | return (ret ? -2 : 0); /* -2 HTTP error */ | |
155 | } |