/
tool_metalink.h
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/
tool_metalink.h
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#ifndef HEADER_CURL_TOOL_METALINK_H
#define HEADER_CURL_TOOL_METALINK_H
/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2013, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at http://curl.haxx.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
***************************************************************************/
#include "tool_setup.h"
/* returns 1 for success, 0 otherwise (we use OpenSSL *_Init fncs directly) */
typedef int (* Curl_digest_init_func)(void *context);
typedef void (* Curl_digest_update_func)(void *context,
const unsigned char *data,
unsigned int len);
typedef void (* Curl_digest_final_func)(unsigned char *result, void *context);
typedef struct {
Curl_digest_init_func digest_init; /* Initialize context procedure */
Curl_digest_update_func digest_update; /* Update context with data */
Curl_digest_final_func digest_final; /* Get final result procedure */
unsigned int digest_ctxtsize; /* Context structure size */
unsigned int digest_resultlen; /* Result length (bytes) */
} digest_params;
typedef struct {
const digest_params *digest_hash; /* Hash function definition */
void *digest_hashctx; /* Hash function context */
} digest_context;
digest_context * Curl_digest_init(const digest_params *dparams);
int Curl_digest_update(digest_context *context,
const unsigned char *data,
unsigned int len);
int Curl_digest_final(digest_context *context, unsigned char *result);
typedef struct {
const char *hash_name;
const digest_params *dparams;
} metalink_digest_def;
typedef struct {
const char *alias_name;
const metalink_digest_def *digest_def;
} metalink_digest_alias;
typedef struct metalink_checksum {
const metalink_digest_def *digest_def;
/* raw digest value, not ascii hex digest */
unsigned char *digest;
} metalink_checksum;
typedef struct metalink_resource {
struct metalink_resource *next;
char *url;
} metalink_resource;
typedef struct metalinkfile {
struct metalinkfile *next;
char *filename;
metalink_checksum *checksum;
metalink_resource *resource;
} metalinkfile;
#ifdef USE_METALINK
/*
* curl requires libmetalink 0.1.0 or newer
*/
#define CURL_REQ_LIBMETALINK_MAJOR 0
#define CURL_REQ_LIBMETALINK_MINOR 1
#define CURL_REQ_LIBMETALINK_PATCH 0
#define CURL_REQ_LIBMETALINK_VERS ((CURL_REQ_LIBMETALINK_MAJOR * 10000) + \
(CURL_REQ_LIBMETALINK_MINOR * 100) + \
CURL_REQ_LIBMETALINK_PATCH)
extern const digest_params MD5_DIGEST_PARAMS[1];
extern const digest_params SHA1_DIGEST_PARAMS[1];
extern const digest_params SHA256_DIGEST_PARAMS[1];
#include <metalink/metalink.h>
/*
* Counts the resource in the metalinkfile.
*/
int count_next_metalink_resource(metalinkfile *mlfile);
void clean_metalink(struct Configurable *config);
/*
* Performs final parse operation and extracts information from
* Metalink and creates metalinkfile structs.
*
* This function returns 0 if it succeeds without warnings, or one of
* the following negative error codes:
*
* -1: Parsing failed; or no file is found
* -2: Parsing succeeded with some warnings.
*/
int parse_metalink(struct Configurable *config, struct OutStruct *outs,
const char *metalink_url);
/*
* Callback function for CURLOPT_WRITEFUNCTION
*/
size_t metalink_write_cb(void *buffer, size_t sz, size_t nmemb,
void *userdata);
/*
* Returns nonzero if content_type includes "application/metalink+xml"
* media-type. The check is done in case-insensitive manner.
*/
int check_metalink_content_type(const char *content_type);
/*
* Check checksum of file denoted by filename.
*
* This function returns 1 if the checksum matches or one of the
* following integers:
*
* 0:
* Checksum didn't match.
* -1:
* Could not open file; or could not read data from file.
* -2:
* No checksum in Metalink supported, hash algorithm not available, or
* Metalink does not contain checksum.
*/
int metalink_check_hash(struct Configurable *config,
metalinkfile *mlfile,
const char *filename);
/*
* Release resources allocated at global scope.
*/
void metalink_cleanup(void);
#else /* USE_METALINK */
#define count_next_metalink_resource(x) 0
#define clean_metalink(x) Curl_nop_stmt
/* metalink_cleanup() takes no arguments */
#define metalink_cleanup() Curl_nop_stmt
#endif /* USE_METALINK */
#endif /* HEADER_CURL_TOOL_METALINK_H */