#ifndef HEADER_CURL_TOOL_METALINK_H #define HEADER_CURL_TOOL_METALINK_H /*************************************************************************** * _ _ ____ _ * Project ___| | | | _ \| | * / __| | | | |_) | | * | (__| |_| | _ <| |___ * \___|\___/|_| \_\_____| * * Copyright (C) 1998 - 2014, 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" struct GlobalConfig; struct OperationConfig; /* 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 OperationConfig *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 OperationConfig *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 GlobalConfig *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) (void)x /* metalink_cleanup() takes no arguments */ #define metalink_cleanup() Curl_nop_stmt #endif /* USE_METALINK */ #endif /* HEADER_CURL_TOOL_METALINK_H */