2 * viking -- GPS Data and Topo Analyzer, Explorer, and Manager
4 * Copyright (C) 2003-2005, Evan Battaglia <gtoevan@gmx.net>
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.
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.
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
30 #include <glib/gstdio.h>
31 #include <glib/gi18n.h>
35 #include "curl_download.h"
37 gboolean a_check_html_file(FILE* f)
44 gchar * html_str[] = {
52 memset(buf, 0, sizeof(buf));
55 nr = fread(buf, 1, sizeof(buf) - 1, f);
57 for (bp = buf; (bp < (buf + sizeof(buf) - 1)) && (nr > (bp - buf)); bp++) {
61 if ((bp >= (buf + sizeof(buf) -1)) || ((bp - buf) >= nr))
63 for (s = html_str; *s; s++) {
64 if (strncasecmp(*s, bp, strlen(*s)) == 0)
70 gboolean a_check_map_file(FILE* f)
72 return !a_check_html_file(f);
75 gboolean a_check_kml_file(FILE* f)
82 gchar * html_str[] = {
87 memset(buf, 0, sizeof(buf));
90 nr = fread(buf, 1, sizeof(buf) - 1, f);
92 for (bp = buf; (bp < (buf + sizeof(buf) - 1)) && (nr > (bp - buf)); bp++) {
96 if ((bp >= (buf + sizeof(buf) -1)) || ((bp - buf) >= nr))
98 for (s = html_str; *s; s++) {
99 if (strncasecmp(*s, bp, strlen(*s)) == 0)
105 static int download( const char *hostname, const char *uri, const char *fn, DownloadOptions *options, gboolean ftp)
110 gboolean failure = FALSE;
113 if ( g_file_test ( fn, G_FILE_TEST_EXISTS ) == TRUE )
115 /* File exists: return */
118 gchar *dir = g_path_get_dirname ( fn );
119 g_mkdir_with_parents ( dir , 0777 );
122 /* create placeholder file */
123 if ( ! (f = g_fopen ( fn, "w+b" )) ) /* immediately open file so other threads won't -- prevents race condition */
129 tmpfilename = g_strdup_printf("%s.tmp", fn);
130 f = g_fopen ( tmpfilename, "w+b" );
132 g_free ( tmpfilename );
133 g_remove ( fn ); /* couldn't create temporary. delete 0-byte file. */
137 /* Call the backend function */
138 ret = curl_download_get_url ( hostname, uri, f, options, ftp );
139 if (ret == -1 || ret == 1 || ret == -2) {
140 g_debug("%s: download failed: curl_download_get_url=%d", __FUNCTION__, ret);
144 if (!failure && options != NULL && options->check_file != NULL && ! options->check_file(f)) {
145 g_debug("%s: file content checking failed", __FUNCTION__);
151 g_warning(_("Download error: %s"), fn);
154 g_remove ( tmpfilename );
155 g_free ( tmpfilename );
156 g_remove ( fn ); /* couldn't create temporary. delete 0-byte file. */
162 g_rename ( tmpfilename, fn ); /* move completely-downloaded file to permanent location */
163 g_free ( tmpfilename );
167 /* success = 0, -1 = couldn't connect, -2 HTTP error, -3 file exists, -4 couldn't write to file... */
168 /* uri: like "/uri.html?whatever" */
169 /* only reason for the "wrapper" is so we can do redirects. */
170 int a_http_download_get_url ( const char *hostname, const char *uri, const char *fn, DownloadOptions *opt )
172 return download ( hostname, uri, fn, opt, FALSE );
175 int a_ftp_download_get_url ( const char *hostname, const char *uri, const char *fn, DownloadOptions *opt )
177 return download ( hostname, uri, fn, opt, TRUE );