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3292ba8b GB |
1 | /* |
2 | * viking -- GPS Data and Topo Analyzer, Explorer, and Manager | |
3 | * | |
a482007a GB |
4 | * Copyright (C) 2007, Guilhem Bonnefille <guilhem.bonnefille@gmail.com> |
5 | * Copyright (C) 2007, Quy Tonthat <qtonthat@gmail.com> | |
6 | * Copyright (C) 2009-2010, Jocelyn Jaubert <jocelyn.jaubert@gmail.com> | |
7 | * Copyright (C) 2010, Sven Wegener <sven.wegener@stealer.net> | |
3292ba8b GB |
8 | * |
9 | * This program is free software; you can redistribute it and/or modify | |
10 | * it under the terms of the GNU General Public License as published by | |
11 | * the Free Software Foundation; either version 2 of the License, or | |
12 | * (at your option) any later version. | |
13 | * | |
14 | * This program is distributed in the hope that it will be useful, | |
15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | * GNU General Public License for more details. | |
18 | * | |
19 | * You should have received a copy of the GNU General Public License | |
20 | * along with this program; if not, write to the Free Software | |
21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
22 | * | |
23 | */ | |
24 | ||
25 | #ifdef HAVE_CONFIG_H | |
26 | #include "config.h" | |
27 | #endif | |
28 | ||
8c060406 | 29 | #include <stdio.h> |
1aefc7eb | 30 | #include <string.h> |
8c060406 | 31 | |
6a4a29aa JJ |
32 | #ifdef HAVE_UNISTD_H |
33 | #include <unistd.h> | |
34 | #endif | |
35 | ||
45acf79e MA |
36 | #include <glib.h> |
37 | #include <glib/gstdio.h> | |
4c77d5e0 | 38 | #include <glib/gi18n.h> |
6a2692be | 39 | #include <glib/gprintf.h> |
3292ba8b GB |
40 | #include <gtk/gtk.h> |
41 | ||
3292ba8b | 42 | #include <curl/curl.h> |
3292ba8b | 43 | |
7711383f | 44 | #include "background.h" |
29f1598c | 45 | #include "dir.h" |
80d0ff2b | 46 | #include "file.h" |
2936913d | 47 | #include "globals.h" |
3292ba8b GB |
48 | #include "curl_download.h" |
49 | ||
d0b611d7 | 50 | gchar *curl_download_user_agent = NULL; |
6a2692be | 51 | |
3a0c074a MA |
52 | /* |
53 | * Even if writing to FILE* is supported by libcurl by default, | |
54 | * it seems that it is non-portable (win32 DLL specific). | |
55 | * | |
56 | * So, we provide our own trivial CURLOPT_WRITEFUNCTION. | |
57 | */ | |
58 | static size_t curl_write_func(void *ptr, size_t size, size_t nmemb, FILE *stream) | |
59 | { | |
60 | return fwrite(ptr, size, nmemb, stream); | |
61 | } | |
62 | ||
a8a3d5e0 | 63 | static size_t curl_get_etag_func(void *ptr, size_t size, size_t nmemb, void *stream) |
f039c5ff | 64 | { |
a6bf52f9 GB |
65 | #define ETAG_KEYWORD "ETag: " |
66 | #define ETAG_LEN (sizeof(ETAG_KEYWORD)-1) | |
686baff0 | 67 | CurlDownloadOptions *cdo = (CurlDownloadOptions*)stream; |
f039c5ff | 68 | size_t len = size*nmemb; |
fba991f6 | 69 | char *str = g_strstr_len((const char*)ptr, len, ETAG_KEYWORD); |
f039c5ff | 70 | if (str) { |
a6bf52f9 GB |
71 | char *etag_str = str + ETAG_LEN; |
72 | char *end_str = g_strstr_len(etag_str, len - ETAG_LEN, "\r\n"); | |
f039c5ff | 73 | if (etag_str && end_str) { |
686baff0 RN |
74 | cdo->new_etag = g_strndup(etag_str, end_str - etag_str); |
75 | g_debug("%s: ETAG found: %s", __FUNCTION__, cdo->new_etag); | |
f039c5ff JJ |
76 | } |
77 | } | |
78 | return nmemb; | |
79 | } | |
80 | ||
7711383f JJ |
81 | static int curl_progress_func(void *clientp, double dltotal, double dlnow, double ultotal, double ulnow) |
82 | { | |
83 | return a_background_testcancel(NULL); | |
84 | } | |
85 | ||
80d0ff2b QT |
86 | /* This should to be called from main() to make sure thread safe */ |
87 | void curl_download_init() | |
88 | { | |
89 | curl_global_init(CURL_GLOBAL_ALL); | |
6a2692be | 90 | curl_download_user_agent = g_strdup_printf ("%s/%s %s", PACKAGE, VERSION, curl_version()); |
80d0ff2b QT |
91 | } |
92 | ||
3eba9bbf RN |
93 | /* This should to be called from main() to make sure thread safe */ |
94 | void curl_download_uninit() | |
95 | { | |
96 | curl_global_cleanup(); | |
97 | } | |
98 | ||
4dc72a1d RN |
99 | /** |
100 | * | |
101 | */ | |
102 | CURL_download_t curl_download_uri ( const char *uri, FILE *f, DownloadFileOptions *options, CurlDownloadOptions *cdo, void *handle ) | |
3292ba8b | 103 | { |
3292ba8b | 104 | CURL *curl; |
f039c5ff | 105 | struct curl_slist *curl_send_headers = NULL; |
11f88b69 | 106 | CURLcode res = CURLE_FAILED_INIT; |
3292ba8b | 107 | |
2936913d GB |
108 | g_debug("%s: uri=%s", __PRETTY_FUNCTION__, uri); |
109 | ||
825413ba | 110 | curl = handle ? handle : curl_easy_init (); |
6a4a29aa | 111 | if ( !curl ) { |
4e815e90 | 112 | return CURL_DOWNLOAD_ERROR; |
6a4a29aa JJ |
113 | } |
114 | if (vik_verbose) | |
115 | curl_easy_setopt ( curl, CURLOPT_VERBOSE, 1 ); | |
8cd9c991 | 116 | curl_easy_setopt ( curl, CURLOPT_NOSIGNAL, 1 ); // Yep, we're a multi-threaded program so don't let signals mess it up! |
0807f24b RN |
117 | if ( options != NULL && options->user_pass ) { |
118 | curl_easy_setopt ( curl, CURLOPT_HTTPAUTH, CURLAUTH_ANY ); | |
119 | curl_easy_setopt ( curl, CURLOPT_USERPWD, options->user_pass ); | |
120 | } | |
6a4a29aa JJ |
121 | curl_easy_setopt ( curl, CURLOPT_URL, uri ); |
122 | curl_easy_setopt ( curl, CURLOPT_WRITEDATA, f ); | |
123 | curl_easy_setopt ( curl, CURLOPT_WRITEFUNCTION, curl_write_func); | |
124 | curl_easy_setopt ( curl, CURLOPT_NOPROGRESS, 0 ); | |
125 | curl_easy_setopt ( curl, CURLOPT_PROGRESSDATA, NULL ); | |
126 | curl_easy_setopt ( curl, CURLOPT_PROGRESSFUNCTION, curl_progress_func); | |
127 | if (options != NULL) { | |
128 | if(options->referer != NULL) | |
129 | curl_easy_setopt ( curl, CURLOPT_REFERER, options->referer); | |
130 | if(options->follow_location != 0) { | |
131 | curl_easy_setopt ( curl, CURLOPT_FOLLOWLOCATION, 1); | |
132 | curl_easy_setopt ( curl, CURLOPT_MAXREDIRS, options->follow_location); | |
133 | } | |
686baff0 RN |
134 | if (cdo != NULL) { |
135 | if(options->check_file_server_time && cdo->time_condition != 0) { | |
9a021e4f JJ |
136 | /* if file exists, check against server if file is recent enough */ |
137 | curl_easy_setopt ( curl, CURLOPT_TIMECONDITION, CURL_TIMECOND_IFMODSINCE); | |
686baff0 | 138 | curl_easy_setopt ( curl, CURLOPT_TIMEVALUE, cdo->time_condition); |
9a021e4f | 139 | } |
f039c5ff | 140 | if (options->use_etag) { |
686baff0 | 141 | if (cdo->etag != NULL) { |
f039c5ff | 142 | /* add an header on the HTTP request */ |
9004d4ed | 143 | char str[60]; |
686baff0 | 144 | g_snprintf(str, 60, "If-None-Match: %s", cdo->etag); |
f039c5ff JJ |
145 | curl_send_headers = curl_slist_append(curl_send_headers, str); |
146 | curl_easy_setopt ( curl, CURLOPT_HTTPHEADER , curl_send_headers); | |
147 | } | |
148 | /* store the new etag from the server in an option value */ | |
686baff0 | 149 | curl_easy_setopt ( curl, CURLOPT_WRITEHEADER, cdo); |
f039c5ff JJ |
150 | curl_easy_setopt ( curl, CURLOPT_HEADERFUNCTION, curl_get_etag_func); |
151 | } | |
3292ba8b | 152 | } |
6a4a29aa JJ |
153 | } |
154 | curl_easy_setopt ( curl, CURLOPT_USERAGENT, curl_download_user_agent ); | |
6a4a29aa | 155 | res = curl_easy_perform ( curl ); |
f039c5ff | 156 | |
6a4a29aa JJ |
157 | if (res == 0) { |
158 | glong response; | |
159 | curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &response); | |
160 | if (response == 304) { // 304 = Not Modified | |
4e815e90 | 161 | res = CURL_DOWNLOAD_NO_NEWER_FILE; |
6304fa62 JJ |
162 | } else if (response == 200 || // http: 200 = Ok |
163 | response == 226) { // ftp: 226 = sucess | |
6a4a29aa JJ |
164 | gdouble size; |
165 | /* verify if curl sends us any data - this is a workaround on using CURLOPT_TIMECONDITION | |
166 | when the server has a (incorrect) time earlier than the time on the file we already have */ | |
167 | curl_easy_getinfo(curl, CURLINFO_SIZE_DOWNLOAD, &size); | |
168 | if (size == 0) | |
4e815e90 | 169 | res = CURL_DOWNLOAD_ERROR; |
6a4a29aa | 170 | else |
4e815e90 | 171 | res = CURL_DOWNLOAD_NO_ERROR; |
6a4a29aa | 172 | } else { |
bda3c239 | 173 | g_warning("%s: http response: %ld for uri %s\n", __FUNCTION__, response, uri); |
4e815e90 | 174 | res = CURL_DOWNLOAD_ERROR; |
6a4a29aa JJ |
175 | } |
176 | } else { | |
4e815e90 | 177 | res = CURL_DOWNLOAD_ERROR; |
6a4a29aa | 178 | } |
825413ba SW |
179 | if (!handle) |
180 | curl_easy_cleanup ( curl ); | |
dea59045 | 181 | if (curl_send_headers) { |
f039c5ff | 182 | curl_slist_free_all(curl_send_headers); |
d0b611d7 | 183 | curl_send_headers = NULL; |
dea59045 JB |
184 | curl_easy_setopt ( curl, CURLOPT_HTTPHEADER , NULL); |
185 | } | |
6a4a29aa | 186 | return res; |
3292ba8b GB |
187 | } |
188 | ||
4dc72a1d RN |
189 | /** |
190 | * curl_download_get_url: | |
ee2a6715 | 191 | * Either hostname and/or uri should be defined |
4dc72a1d RN |
192 | * |
193 | */ | |
194 | CURL_download_t curl_download_get_url ( const char *hostname, const char *uri, FILE *f, DownloadFileOptions *options, gboolean ftp, CurlDownloadOptions *cdo, void *handle ) | |
3292ba8b | 195 | { |
3292ba8b GB |
196 | gchar *full = NULL; |
197 | ||
4dc72a1d | 198 | if ( hostname && strstr ( hostname, "://" ) != NULL ) |
1aefc7eb GB |
199 | /* Already full url */ |
200 | full = (gchar *) hostname; | |
4dc72a1d | 201 | else if ( uri && strstr ( uri, "://" ) != NULL ) |
1aefc7eb GB |
202 | /* Already full url */ |
203 | full = (gchar *) uri; | |
4dc72a1d | 204 | else if ( hostname && uri ) |
1aefc7eb GB |
205 | /* Compose the full url */ |
206 | full = g_strdup_printf ( "%s://%s%s", (ftp?"ftp":"http"), hostname, uri ); | |
4dc72a1d RN |
207 | else { |
208 | return CURL_DOWNLOAD_ERROR; | |
209 | } | |
210 | ||
211 | CURL_download_t ret = curl_download_uri ( full, f, options, cdo, handle ); | |
ee2a6715 RN |
212 | // Only free newly allocated memory |
213 | if ( hostname != full && uri != full ) | |
214 | g_free ( full ); | |
3292ba8b | 215 | |
6a4a29aa | 216 | return ret; |
3292ba8b | 217 | } |
825413ba SW |
218 | |
219 | void * curl_download_handle_init () | |
220 | { | |
221 | return curl_easy_init(); | |
222 | } | |
223 | ||
224 | void curl_download_handle_cleanup ( void *handle ) | |
225 | { | |
226 | curl_easy_cleanup(handle); | |
227 | } |