1 #ifndef HEADER_CURL_TOOL_METALINK_H
2 #define HEADER_CURL_TOOL_METALINK_H
3 /***************************************************************************
5 * Project ___| | | | _ \| |
7 * | (__| |_| | _ <| |___
8 * \___|\___/|_| \_\_____|
10 * Copyright (C) 1998 - 2013, Daniel Stenberg, <daniel@haxx.se>, et al.
12 * This software is licensed as described in the file COPYING, which
13 * you should have received as part of this distribution. The terms
14 * are also available at http://curl.haxx.se/docs/copyright.html.
16 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
17 * copies of the Software, and permit persons to whom the Software is
18 * furnished to do so, under the terms of the COPYING file.
20 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
21 * KIND, either express or implied.
23 ***************************************************************************/
24 #include "tool_setup.h"
26 /* returns 1 for success, 0 otherwise (we use OpenSSL *_Init fncs directly) */
27 typedef int (* Curl_digest_init_func)(void *context);
29 typedef void (* Curl_digest_update_func)(void *context,
30 const unsigned char *data,
32 typedef void (* Curl_digest_final_func)(unsigned char *result, void *context);
35 Curl_digest_init_func digest_init; /* Initialize context procedure */
36 Curl_digest_update_func digest_update; /* Update context with data */
37 Curl_digest_final_func digest_final; /* Get final result procedure */
38 unsigned int digest_ctxtsize; /* Context structure size */
39 unsigned int digest_resultlen; /* Result length (bytes) */
43 const digest_params *digest_hash; /* Hash function definition */
44 void *digest_hashctx; /* Hash function context */
47 digest_context * Curl_digest_init(const digest_params *dparams);
48 int Curl_digest_update(digest_context *context,
49 const unsigned char *data,
51 int Curl_digest_final(digest_context *context, unsigned char *result);
54 const char *hash_name;
55 const digest_params *dparams;
56 } metalink_digest_def;
59 const char *alias_name;
60 const metalink_digest_def *digest_def;
61 } metalink_digest_alias;
63 typedef struct metalink_checksum {
64 const metalink_digest_def *digest_def;
65 /* raw digest value, not ascii hex digest */
66 unsigned char *digest;
69 typedef struct metalink_resource {
70 struct metalink_resource *next;
74 typedef struct metalinkfile {
75 struct metalinkfile *next;
77 metalink_checksum *checksum;
78 metalink_resource *resource;
84 * curl requires libmetalink 0.1.0 or newer
86 #define CURL_REQ_LIBMETALINK_MAJOR 0
87 #define CURL_REQ_LIBMETALINK_MINOR 1
88 #define CURL_REQ_LIBMETALINK_PATCH 0
90 #define CURL_REQ_LIBMETALINK_VERS ((CURL_REQ_LIBMETALINK_MAJOR * 10000) + \
91 (CURL_REQ_LIBMETALINK_MINOR * 100) + \
92 CURL_REQ_LIBMETALINK_PATCH)
94 extern const digest_params MD5_DIGEST_PARAMS[1];
95 extern const digest_params SHA1_DIGEST_PARAMS[1];
96 extern const digest_params SHA256_DIGEST_PARAMS[1];
98 #include <metalink/metalink.h>
101 * Counts the resource in the metalinkfile.
103 int count_next_metalink_resource(metalinkfile *mlfile);
104 void clean_metalink(struct Configurable *config);
107 * Performs final parse operation and extracts information from
108 * Metalink and creates metalinkfile structs.
110 * This function returns 0 if it succeeds without warnings, or one of
111 * the following negative error codes:
113 * -1: Parsing failed; or no file is found
114 * -2: Parsing succeeded with some warnings.
116 int parse_metalink(struct Configurable *config, struct OutStruct *outs,
117 const char *metalink_url);
120 * Callback function for CURLOPT_WRITEFUNCTION
122 size_t metalink_write_cb(void *buffer, size_t sz, size_t nmemb,
126 * Returns nonzero if content_type includes "application/metalink+xml"
127 * media-type. The check is done in case-insensitive manner.
129 int check_metalink_content_type(const char *content_type);
132 * Check checksum of file denoted by filename.
134 * This function returns 1 if the checksum matches or one of the
135 * following integers:
138 * Checksum didn't match.
140 * Could not open file; or could not read data from file.
142 * No checksum in Metalink supported, hash algorithm not available, or
143 * Metalink does not contain checksum.
145 int metalink_check_hash(struct Configurable *config,
146 metalinkfile *mlfile,
147 const char *filename);
150 * Release resources allocated at global scope.
152 void metalink_cleanup(void);
154 #else /* USE_METALINK */
156 #define count_next_metalink_resource(x) 0
157 #define clean_metalink(x) Curl_nop_stmt
159 /* metalink_cleanup() takes no arguments */
160 #define metalink_cleanup() Curl_nop_stmt
162 #endif /* USE_METALINK */
164 #endif /* HEADER_CURL_TOOL_METALINK_H */