* viking -- GPS Data and Topo Analyzer, Explorer, and Manager
*
* Copyright (C) 2003-2005, Evan Battaglia <gtoevan@gmx.net>
+ * Copyright (C) 2007, Guilhem Bonnefille <guilhem.bonnefille@gmail.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
#ifndef _VIKING_DOWNLOAD_H
#define _VIKING_DOWNLOAD_H
+#include <stdio.h>
+
+G_BEGIN_DECLS
+
+/* File content check */
+typedef gboolean (*VikFileContentCheckerFunc) (FILE*);
+gboolean a_check_map_file(FILE*);
+gboolean a_check_html_file(FILE*);
+gboolean a_check_kml_file(FILE*);
+// Convert
+void a_try_decompress_file (gchar *name);
+typedef void (*VikFileContentConvertFunc) (gchar*); // filename (temporary)
+
typedef struct {
+ /**
+ * Check if the server has a more recent file than the one we have before downloading it
+ * This uses http header If-Modified-Since
+ */
+ gboolean check_file_server_time;
+
+ /**
+ * Set if the server handle ETag
+ */
+ gboolean use_etag;
+
/**
* The REFERER string to use.
* Could be NULL.
*/
gchar *referer;
-} DownloadOptions;
+
+ /**
+ * follow_location specifies the number of retries
+ * to follow a redirect while downloading a page.
+ */
+ glong follow_location;
+
+ /**
+ * File content checker.
+ */
+ VikFileContentCheckerFunc check_file;
+
+ /**
+ * If need to authenticate on download
+ * format: 'username:password'
+ */
+ gchar *user_pass;
+
+ /**
+ * File manipulation if necessary such as uncompressing the downloaded file.
+ */
+ VikFileContentConvertFunc convert_file;
+
+} DownloadMapOptions;
+
+typedef struct {
+ /**
+ * Time sent to server on header If-Modified-Since
+ */
+ time_t time_condition;
+ /**
+ * Etag sent by server on previous download
+ */
+ char *etag;
+ /**
+ * Etag sent by server on this download
+ */
+ char *new_etag;
+
+} DownloadFileOptions;
+
+void a_download_init(void);
+
+typedef enum {
+ DOWNLOAD_FILE_WRITE_ERROR = -4, // Can't write downloaded file :(
+ DOWNLOAD_HTTP_ERROR = -2,
+ DOWNLOAD_CONTENT_ERROR = -1,
+ DOWNLOAD_SUCCESS = 0,
+ DOWNLOAD_NOT_REQUIRED = 1, // Also 'successful'. e.g. Because file already exists and no time checks used
+} DownloadResult_t;
/* TODO: convert to Glib */
-int a_http_download_get_url ( const char *hostname, const char *uri, const char *fn, DownloadOptions *opt );
+DownloadResult_t a_http_download_get_url ( const char *hostname, const char *uri, const char *fn, DownloadMapOptions *opt, void *handle );
+DownloadResult_t a_ftp_download_get_url ( const char *hostname, const char *uri, const char *fn, DownloadMapOptions *opt, void *handle );
+void *a_download_handle_init ();
+void a_download_handle_cleanup ( void *handle );
+
+gchar *a_download_uri_to_tmp_file ( const gchar *uri, DownloadMapOptions *options );
+
+G_END_DECLS
#endif