/* zip_string.c -- string handling (with encoding) Copyright (C) 2012-2014 Dieter Baron and Thomas Klausner This file is part of libzip, a library to manipulate ZIP archives. The authors can be contacted at Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met: 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer. 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution. 3. The names of the authors may not be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #include #include #include "zipint.h" zip_uint32_t _zip_string_crc32(const zip_string_t *s) { zip_uint32_t crc; crc = (zip_uint32_t)crc32(0L, Z_NULL, 0); if (s != NULL) crc = (zip_uint32_t)crc32(crc, s->raw, s->length); return crc; } int _zip_string_equal(const zip_string_t *a, const zip_string_t *b) { if (a == NULL || b == NULL) return a == b; if (a->length != b->length) return 0; /* TODO: encoding */ return (memcmp(a->raw, b->raw, a->length) == 0); } void _zip_string_free(zip_string_t *s) { if (s == NULL) return; free(s->raw); free(s->converted); free(s); } const zip_uint8_t * _zip_string_get(zip_string_t *string, zip_uint32_t *lenp, zip_flags_t flags, zip_error_t *error) { static const zip_uint8_t empty[1] = ""; if (string == NULL) { if (lenp) *lenp = 0; return empty; } if ((flags & ZIP_FL_ENC_RAW) == 0) { /* start guessing */ if (string->encoding == ZIP_ENCODING_UNKNOWN) _zip_guess_encoding(string, ZIP_ENCODING_UNKNOWN); if (((flags & ZIP_FL_ENC_STRICT) && string->encoding != ZIP_ENCODING_ASCII && string->encoding != ZIP_ENCODING_UTF8_KNOWN) || (string->encoding == ZIP_ENCODING_CP437)) { if (string->converted == NULL) { if ((string->converted = _zip_cp437_to_utf8(string->raw, string->length, &string->converted_length, error)) == NULL) return NULL; } if (lenp) *lenp = string->converted_length; return string->converted; } } if (lenp) *lenp = string->length; return string->raw; } zip_uint16_t _zip_string_length(const zip_string_t *s) { if (s == NULL) return 0; return s->length; } zip_string_t * _zip_string_new(const zip_uint8_t *raw, zip_uint16_t length, zip_flags_t flags, zip_error_t *error) { zip_string_t *s; zip_encoding_type_t expected_encoding; if (length == 0) return NULL; switch (flags & ZIP_FL_ENCODING_ALL) { case ZIP_FL_ENC_GUESS: expected_encoding = ZIP_ENCODING_UNKNOWN; break; case ZIP_FL_ENC_UTF_8: expected_encoding = ZIP_ENCODING_UTF8_KNOWN; break; case ZIP_FL_ENC_CP437: expected_encoding = ZIP_ENCODING_CP437; break; default: zip_error_set(error, ZIP_ER_INVAL, 0); return NULL; } if ((s = (zip_string_t *)malloc(sizeof(*s))) == NULL) { zip_error_set(error, ZIP_ER_MEMORY, 0); return NULL; } if ((s->raw = (zip_uint8_t *)malloc((size_t)(length + 1))) == NULL) { free(s); return NULL; } memcpy(s->raw, raw, length); s->raw[length] = '\0'; s->length = length; s->encoding = ZIP_ENCODING_UNKNOWN; s->converted = NULL; s->converted_length = 0; if (expected_encoding != ZIP_ENCODING_UNKNOWN) { if (_zip_guess_encoding(s, expected_encoding) == ZIP_ENCODING_ERROR) { _zip_string_free(s); zip_error_set(error, ZIP_ER_INVAL, 0); return NULL; } } return s; } int _zip_string_write(zip_t *za, const zip_string_t *s) { if (s == NULL) return 0; return _zip_write(za, s->raw, s->length); } >35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 
/*
 Derived from source code of TrueCrypt 7.1a, which is
 Copyright (c) 2008-2012 TrueCrypt Developers Association and which is governed
 by the TrueCrypt License 3.0.

 Modifications and additions to the original source code (contained in this file)
 and all other portions of this file are Copyright (c) 2013-2016 IDRIX
 and are governed by the Apache License 2.0 the full text of which is
 contained in the file License.txt included in VeraCrypt binary and source
 code distribution packages.
*/

#ifndef TC_HEADER_Boot_BootDiskIo
#define TC_HEADER_Boot_BootDiskIo

#include "Bios.h"
#include "BootDebug.h"
#include "BootDefs.h"

#define TC_MAX_BIOS_DISK_IO_RETRIES 5

enum
{
	BiosResultEccCorrected = 0x11
};

#pragma pack(1)

struct PartitionEntryMBR
{
	byte BootIndicator;

	byte StartHead;
	byte StartCylSector;
	byte StartCylinder;

	byte Type;

	byte EndHead;
	byte EndSector;
	byte EndCylinder;

	uint32 StartLBA;
	uint32 SectorCountLBA;
};

struct MBR
{
	byte Code[446];
	PartitionEntryMBR Partitions[4];
	uint16 Signature;
};

struct BiosLbaPacket
{
	byte Size;
	byte Reserved;
	uint16 SectorCount;
	uint32 Buffer;
	uint64 Sector;
};

#pragma pack()


struct ChsAddress
{
	uint16 Cylinder;
	byte Head;
	byte Sector;
};

struct Partition
{
	byte Number;
	byte Drive;
	bool Active;
	uint64 EndSector;
	bool Primary;
	uint64 SectorCount;
	uint64 StartSector;
	byte Type;
};

struct DriveGeometry
{
	uint16 Cylinders;
	byte Heads;
	byte Sectors;
};


#ifdef TC_BOOT_DEBUG_ENABLED
void AcquireSectorBuffer ();
void ReleaseSectorBuffer ();
#else
#	define AcquireSectorBuffer()
#	define ReleaseSectorBuffer()
#endif

void ChsToLba (const DriveGeometry &geometry, const ChsAddress &chs, uint64 &lba);
bool GetActivePartition (byte drive);
BiosResult GetDriveGeometry (byte drive, DriveGeometry &geometry, bool silent = false);
BiosResult GetDrivePartitions (byte drive, Partition *partitionArray, size_t partitionArrayCapacity, size_t &partitionCount, bool activeOnly = false, Partition *findPartitionFollowingThis = nullptr, bool silent = false);
bool IsLbaSupported (byte drive);
void LbaToChs (const DriveGeometry &geometry, const uint64 &lba, ChsAddress &chs);
void Print (const ChsAddress &chs);
void PrintDiskError (BiosResult error, bool write, byte drive, const uint64 *sector, const ChsAddress *chs = nullptr);
void PrintSectorCountInMB (const uint64 &sectorCount);
BiosResult ReadWriteMBR (bool write, byte drive, bool silent = false);
BiosResult ReadSectors (uint16 bufferSegment, uint16 bufferOffset, byte drive, const uint64 &sector, uint16 sectorCount, bool silent = false);
BiosResult ReadSectors (byte *buffer, byte drive, const uint64 &sector, uint16 sectorCount, bool silent = false);
BiosResult ReadSectors (byte *buffer, byte drive, const ChsAddress &chs, byte sectorCount, bool silent = false);
BiosResult ReadWriteSectors (bool write, uint16 bufferSegment, uint16 bufferOffset, byte drive, const uint64 &sector, uint16 sectorCount, bool silent);
BiosResult WriteSectors (byte *buffer, byte drive, const uint64 &sector, uint16 sectorCount, bool silent = false);
BiosResult WriteSectors (byte *buffer, byte drive, const ChsAddress &chs, byte sectorCount, bool silent = false);

extern byte SectorBuffer[TC_LB_SIZE];

#endif // TC_HEADER_Boot_BootDiskIo