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Diffstat (limited to '')
| -rwxr-xr-x | project/src/lib-checksum.h | 196 |
1 files changed, 196 insertions, 0 deletions
diff --git a/project/src/lib-checksum.h b/project/src/lib-checksum.h new file mode 100755 index 0000000..088b2a1 --- /dev/null +++ b/project/src/lib-checksum.h @@ -0,0 +1,196 @@ + +/*************************************************************************** + * _______ _______ _______ * + * | ___ |____ | ___ | * + * | | |_| / /| | |_| * + * | |_____ / / | |_____ * + * |_____ | / / |_____ | * + * _ | | / / _ | | * + * | |___| |/ /____| |___| | * + * |_______|_______|_______| * + * * + * Wiimms SZS Tools * + * https://szs.wiimm.de/ * + * * + *************************************************************************** + * * + * This file is part of the SZS project. * + * Visit https://szs.wiimm.de/ for project details and sources. * + * * + * Copyright (c) 2011-2020 by Dirk Clemens <wiimm@wiimm.de> * + * * + *************************************************************************** + * * + * 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 * + * the Free Software Foundation; either version 2 of the License, or * + * (at your option) any later version. * + * * + * This program is distributed in the hope that it will be useful, * + * but WITHOUT ANY WARRANTY; without even the implied warranty of * + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * + * GNU General Public License for more details. * + * * + * See file gpl-2.0.txt or http://www.gnu.org/licenses/gpl-2.0.txt * + * * + ***************************************************************************/ + +#ifndef SZS_LIB_CHECKSUM_H +#define SZS_LIB_CHECKSUM_H 1 + +#define _GNU_SOURCE 1 + +#include "dclib-types.h" +#include "lib-szs.h" + +// +/////////////////////////////////////////////////////////////////////////////// +/////////////// struct sha1_size_t /////////////// +/////////////////////////////////////////////////////////////////////////////// +// [[sha1_size_t]] + +#define CHECKSUM_DB_SIZE 32 + +/////////////////////////////////////////////////////////////////////////////// + +typedef struct sha1_size_t +{ + sha1_hash_t hash; // SHA1 checksum (binary) + u32 size; // size of date (big endian) +} +__attribute__ ((packed)) sha1_size_t; + +/////////////////////////////////////////////////////////////////////////////// + +// bufsize should be >40 +void CreateSSChecksum ( char *buf, uint bufsize, const sha1_size_t *ss ); +void CreateSSChecksumBySZS ( char *buf, uint bufsize, const szs_file_t *szs ); + +// normed DB coding (independent of options) +void CreateSSChecksumDB ( char *buf, uint bufsize, const sha1_size_t *ss ); +void CreateSSChecksumDBByData ( char *buf, uint bufsize, cvp data, uint size ); +void CreateSSChecksumDBBySZS ( char *buf, uint bufsize, const szs_file_t *szs ); + +enumError GetSSByFile ( sha1_size_t *ss, ccp path1, ccp path2 ); + +// +/////////////////////////////////////////////////////////////////////////////// +/////////////// struct DistributionInfo_t /////////////// +/////////////////////////////////////////////////////////////////////////////// + +#define DISTRIB_MAGIC8 "#DISTRIB" +#define DISTRIB_MAGIC8_NUM 0x2344495354524942ull + +#define DISTRIBUTION_FILE_VERSION 1 +#define MIN_DISTRIBUTION_SLOT 10 // included +#define MAX_DISTRIBUTION_TRACK 10000 // excluded +#define MAX_DISTRIBUTION_ARENA 1000 // excluded +#define DISTRIBUTION_ARENA_DELTA 100000 + +#define DEFAULT_DISTIBUTION_FNAME "distribution.txt" + +//----------------------------------------------------------------------------- + +static inline bool IsValidDistribArena ( uint slot ) +{ + return slot == DISTRIBUTION_ARENA_DELTA + || slot >= DISTRIBUTION_ARENA_DELTA+MIN_DISTRIBUTION_SLOT + && slot < DISTRIBUTION_ARENA_DELTA+MAX_DISTRIBUTION_ARENA; +} + +static inline bool IsValidDistribTrack ( uint slot ) +{ + return !slot + || slot >= MIN_DISTRIBUTION_SLOT && slot < MAX_DISTRIBUTION_TRACK; +} + +static inline bool IsValidDistribSlot ( uint slot ) +{ + return !slot + || slot >= MIN_DISTRIBUTION_SLOT + && slot < MAX_DISTRIBUTION_TRACK + || slot == DISTRIBUTION_ARENA_DELTA + || slot >= DISTRIBUTION_ARENA_DELTA+MIN_DISTRIBUTION_SLOT + && slot < DISTRIBUTION_ARENA_DELTA+MAX_DISTRIBUTION_ARENA; +} + +//----------------------------------------------------------------------------- +// [[DistributionInfo_t]] + +typedef struct DistributionInfo_t +{ + ParamField_t translate; + ParamField_t param; + ParamField_t arena[MAX_DISTRIBUTION_ARENA]; + ParamField_t track[MAX_DISTRIBUTION_TRACK]; +} +DistributionInfo_t; + +//----------------------------------------------------------------------------- + +void InitializeDistributionInfo + ( DistributionInfo_t * dinf, bool add_default_param ); +void ResetDistributionInfo ( DistributionInfo_t *dinf ); +void AddParamDistributionInfo ( DistributionInfo_t * dinf, bool overwrite ); + +enumError ScanDistribFile + ( DistributionInfo_t *dinf, ccp fname, int ignore, bool assume_arena ); + +// +/////////////////////////////////////////////////////////////////////////////// +/////////////// slot translation /////////////// +/////////////////////////////////////////////////////////////////////////////// + +char * ScanSlot ( uint *res_slot, ccp source, bool need_point ); + +void NormalizeSlotTranslation ( char *buf, uint bufsize, ccp name, + char ** p_first_para, char ** p_first_brack ); + +uint DefineSlotTranslation + ( ParamField_t *translate, bool is_arena, uint slot, ccp name ); + +// 'sha1' can be NULL +int FindSlotByTranslation ( const ParamField_t *translate, ccp fname, ccp sha1 ); + +// 'param' not NULL: Scan "@PARAM = VALUE" lines and store result. +void ScanSlotTranslation + ( ParamField_t *translate, ParamField_t *param, ccp fname, bool ignore ); + +// +/////////////////////////////////////////////////////////////////////////////// +/////////////// szs cache support /////////////// +/////////////////////////////////////////////////////////////////////////////// + +#define SZS_CACHE_FNAME "cache-content.txt" + +extern ccp szs_cache_dir; +extern ParamField_t szs_cache; + +/////////////////////////////////////////////////////////////////////////////// + +static inline bool IsSZSCacheEnabled() + { return szs_cache_dir != 0; } + +void SetupSZSCache ( ccp dir_name, bool use_dirname ); + +void ScanSZSCache ( ccp dir_name, bool purge ); +enumError LoadSZSCache(); +enumError SaveSZSCache(); + +ParamFieldItem_t * StoreSZSCache +( + // return NULL or pointer to cache item + + ccp fname, // NULL or filename, only basename(fname) is used + ccp checksum, // DB checksum; if NULL: load file and calc checksum + bool rename_file, // true: rename existing file + bool *r_exists // not NULL: store a status here + // => true: file result->data exists +); + +// +/////////////////////////////////////////////////////////////////////////////// +/////////////// END /////////////// +/////////////////////////////////////////////////////////////////////////////// + +#endif // SZS_LIB_CHECKSUM_H |