mirror of
https://github.com/moparisthebest/curl
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168 lines
5.4 KiB
C
168 lines
5.4 KiB
C
#ifndef HEADER_CURL_TOOL_METALINK_H
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#define HEADER_CURL_TOOL_METALINK_H
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/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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* Copyright (C) 1998 - 2014, Daniel Stenberg, <daniel@haxx.se>, et al.
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at https://curl.haxx.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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***************************************************************************/
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#include "tool_setup.h"
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struct GlobalConfig;
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struct OperationConfig;
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/* returns 1 for success, 0 otherwise (we use OpenSSL *_Init fncs directly) */
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typedef int (* Curl_digest_init_func)(void *context);
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typedef void (* Curl_digest_update_func)(void *context,
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const unsigned char *data,
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unsigned int len);
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typedef void (* Curl_digest_final_func)(unsigned char *result, void *context);
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typedef struct {
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Curl_digest_init_func digest_init; /* Initialize context procedure */
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Curl_digest_update_func digest_update; /* Update context with data */
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Curl_digest_final_func digest_final; /* Get final result procedure */
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unsigned int digest_ctxtsize; /* Context structure size */
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unsigned int digest_resultlen; /* Result length (bytes) */
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} digest_params;
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typedef struct {
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const digest_params *digest_hash; /* Hash function definition */
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void *digest_hashctx; /* Hash function context */
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} digest_context;
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digest_context * Curl_digest_init(const digest_params *dparams);
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int Curl_digest_update(digest_context *context,
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const unsigned char *data,
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unsigned int len);
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int Curl_digest_final(digest_context *context, unsigned char *result);
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typedef struct {
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const char *hash_name;
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const digest_params *dparams;
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} metalink_digest_def;
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typedef struct {
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const char *alias_name;
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const metalink_digest_def *digest_def;
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} metalink_digest_alias;
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typedef struct metalink_checksum {
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const metalink_digest_def *digest_def;
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/* raw digest value, not ascii hex digest */
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unsigned char *digest;
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} metalink_checksum;
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typedef struct metalink_resource {
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struct metalink_resource *next;
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char *url;
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} metalink_resource;
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typedef struct metalinkfile {
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struct metalinkfile *next;
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char *filename;
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metalink_checksum *checksum;
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metalink_resource *resource;
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} metalinkfile;
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#ifdef USE_METALINK
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/*
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* curl requires libmetalink 0.1.0 or newer
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*/
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#define CURL_REQ_LIBMETALINK_MAJOR 0
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#define CURL_REQ_LIBMETALINK_MINOR 1
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#define CURL_REQ_LIBMETALINK_PATCH 0
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#define CURL_REQ_LIBMETALINK_VERS ((CURL_REQ_LIBMETALINK_MAJOR * 10000) + \
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(CURL_REQ_LIBMETALINK_MINOR * 100) + \
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CURL_REQ_LIBMETALINK_PATCH)
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extern const digest_params MD5_DIGEST_PARAMS[1];
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extern const digest_params SHA1_DIGEST_PARAMS[1];
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extern const digest_params SHA256_DIGEST_PARAMS[1];
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#include <metalink/metalink.h>
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/*
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* Counts the resource in the metalinkfile.
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*/
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int count_next_metalink_resource(metalinkfile *mlfile);
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void clean_metalink(struct OperationConfig *config);
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/*
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* Performs final parse operation and extracts information from
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* Metalink and creates metalinkfile structs.
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*
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* This function returns 0 if it succeeds without warnings, or one of
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* the following negative error codes:
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*
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* -1: Parsing failed; or no file is found
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* -2: Parsing succeeded with some warnings.
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*/
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int parse_metalink(struct OperationConfig *config, struct OutStruct *outs,
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const char *metalink_url);
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/*
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* Callback function for CURLOPT_WRITEFUNCTION
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*/
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size_t metalink_write_cb(void *buffer, size_t sz, size_t nmemb,
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void *userdata);
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/*
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* Returns nonzero if content_type includes "application/metalink+xml"
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* media-type. The check is done in case-insensitive manner.
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*/
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int check_metalink_content_type(const char *content_type);
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/*
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* Check checksum of file denoted by filename.
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*
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* This function returns 1 if the checksum matches or one of the
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* following integers:
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*
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* 0:
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* Checksum didn't match.
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* -1:
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* Could not open file; or could not read data from file.
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* -2:
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* No checksum in Metalink supported, hash algorithm not available, or
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* Metalink does not contain checksum.
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*/
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int metalink_check_hash(struct GlobalConfig *config,
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metalinkfile *mlfile,
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const char *filename);
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/*
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* Release resources allocated at global scope.
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*/
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void metalink_cleanup(void);
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#else /* USE_METALINK */
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#define count_next_metalink_resource(x) 0
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#define clean_metalink(x) (void)x
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/* metalink_cleanup() takes no arguments */
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#define metalink_cleanup() Curl_nop_stmt
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#endif /* USE_METALINK */
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#endif /* HEADER_CURL_TOOL_METALINK_H */
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