libzypp: zypp::media::MediaBlockList Class Reference

libzypp 17.38.6

zypp::media::MediaBlockList Class Reference

`#include <zypp-curl/parser/mediablocklist.h>`

## Public Member Functions
| MediaBlockList (off_t filesize=off_t(-1))
bool | haveBlocks () const
| do we have a blocklist describing the file?
size_t | addBlock (off_t off, size_t size)
| add a block with offset off and size size to the block list.
const MediaBlock & | getBlock (size_t blkno) const
| return the offset/size of a block with number blkno
size_t | numBlocks () const
| return the number of blocks in the blocklist
void | setFilesize (off_t newfilesize=off_t(-1))
| set / return the size of the whole file
off_t | getFilesize () const
bool | haveFilesize () const
void | setFileChecksum (std::string ctype, int cl, unsigned char *c)
| set / verify the checksum over the whole file
std::string | fileChecksumType () const
const UByteArray & | getFileChecksum ()
bool | createFileDigest (Digest &digest) const
bool | verifyFileDigest (Digest &digest) const
bool | haveFileChecksum () const
void | setChecksum (size_t blkno, const std::string &cstype, int csl, unsigned char *cs, size_t cspad=0)
| set / verify the (strong) checksum over a single block
bool | checkChecksum (size_t blkno, const unsigned char *buf, size_t bufl) const
UByteArray | getChecksum (size_t blkno) const
std::string | getChecksumType () const
size_t | checksumPad () const
bool | createDigest (Digest &digest) const
bool | verifyDigest (size_t blkno, Digest &digest) const
bool | haveChecksum (size_t blkno) const
void | setRsum (size_t blkno, int rsl, unsigned int rs, size_t rspad=0)
| set / verify the (weak) rolling checksum over a single block
void | setRsumSequence (uint seq)
| how many blocks in sequence need to have the correct checksums to be considered a match
bool | checkRsum (size_t blkno, const unsigned char *buf, size_t bufl) const
unsigned int | updateRsum (unsigned int rs, const char *bytes, size_t len) const
bool | verifyRsum (size_t blkno, unsigned int rs) const
bool | haveRsum (size_t blkno) const
void | reuseBlocksOld (FILE *wfp, const std::string &filename)
| scan a file for blocks from our blocklist.
void | reuseBlocks (FILE *wfp, const std::string &filename)
std::string | asString () const
| return block list as string

## Private Member Functions
void | writeBlock (size_t blkno, FILE *fp, const unsigned char *buf, size_t bufl, size_t start, std::vector< bool > &found) const
bool | checkChecksumRotated (size_t blkno, const unsigned char *buf, size_t bufl, size_t start) const

## Private Attributes
off_t | filesize
std::string | fsumtype
UByteArray | fsum
bool | haveblocks
std::vector< MediaBlock > | blocks
std::string | chksumtype
int | chksumlen
size_t | chksumpad
std::vector< unsigned char > | chksums
int | rsumlen
uint | rsumseq
size_t | rsumpad
std::vector< unsigned int > | rsums

## Detailed Description

Definition at line 36 of file mediablocklist.h.

## Constructor & Destructor Documentation

## ◆ MediaBlockList()

zypp::media::MediaBlockList::MediaBlockList | ( | off_t | filesize = off_t(-1) | ) |

Definition at line 172 of file mediablocklist.cc.

## Member Function Documentation

## ◆ haveBlocks()

bool zypp::media::MediaBlockList::haveBlocks | ( |  | ) | const
| inline

do we have a blocklist describing the file?

set to true when addBlock() is called

Definition at line 44 of file mediablocklist.h.

## ◆ addBlock()

size_t zypp::media::MediaBlockList::addBlock | ( | off_t | off,
|  | size_t | size )

add a block with offset off and size size to the block list.

Note that blocks must be ordered and must not overlap. returns the block number.

Definition at line 183 of file mediablocklist.cc.

## ◆ getBlock()

const MediaBlock & zypp::media::MediaBlockList::getBlock | ( | size_t | blkno | ) | const
| inline

return the offset/size of a block with number blkno

Definition at line 57 of file mediablocklist.h.

## ◆ numBlocks()

size_t zypp::media::MediaBlockList::numBlocks | ( |  | ) | const
| inline

return the number of blocks in the blocklist

Definition at line 63 of file mediablocklist.h.

## ◆ setFilesize()

void zypp::media::MediaBlockList::setFilesize | ( | off_t | newfilesize = off_t(-1) | ) |
| inline

set / return the size of the whole file

Definition at line 70 of file mediablocklist.h.

## ◆ getFilesize()

off_t zypp::media::MediaBlockList::getFilesize | ( |  | ) | const
| inline

Definition at line 73 of file mediablocklist.h.

## ◆ haveFilesize()

bool zypp::media::MediaBlockList::haveFilesize | ( |  | ) | const
| inline

Definition at line 76 of file mediablocklist.h.

## ◆ setFileChecksum()

void zypp::media::MediaBlockList::setFileChecksum | ( | std::string | ctype,
|  | int | cl,
|  | unsigned char * | c )

set / verify the checksum over the whole file

Definition at line 191 of file mediablocklist.cc.

## ◆ fileChecksumType()

std::string zypp::media::MediaBlockList::fileChecksumType | ( |  | ) | const

Definition at line 200 of file mediablocklist.cc.

## ◆ getFileChecksum()

const UByteArray & zypp::media::MediaBlockList::getFileChecksum | ( |  | ) |

Definition at line 205 of file mediablocklist.cc.

## ◆ createFileDigest()

bool zypp::media::MediaBlockList::createFileDigest | ( | Digest & | digest | ) | const

Definition at line 211 of file mediablocklist.cc.

## ◆ verifyFileDigest()

bool zypp::media::MediaBlockList::verifyFileDigest | ( | Digest & | digest | ) | const

Definition at line 217 of file mediablocklist.cc.

## ◆ haveFileChecksum()

bool zypp::media::MediaBlockList::haveFileChecksum | ( |  | ) | const
| inline

Definition at line 89 of file mediablocklist.h.

## ◆ setChecksum()

void zypp::media::MediaBlockList::setChecksum | ( | size_t | blkno,
|  | const std::string & | cstype,
|  | int | csl,
|  | unsigned char * | cs,
|  | size_t | cspad = 0 )

set / verify the (strong) checksum over a single block

Definition at line 228 of file mediablocklist.cc.

## ◆ checkChecksum()

bool zypp::media::MediaBlockList::checkChecksum | ( | size_t | blkno,
|  | const unsigned char * | buf,
|  | size_t | bufl ) const

Definition at line 343 of file mediablocklist.cc.

## ◆ getChecksum()

UByteArray zypp::media::MediaBlockList::getChecksum | ( | size_t | blkno | ) | const

Definition at line 354 of file mediablocklist.cc.

## ◆ getChecksumType()

std::string zypp::media::MediaBlockList::getChecksumType | ( |  | ) | const

Definition at line 364 of file mediablocklist.cc.

## ◆ checksumPad()

size_t zypp::media::MediaBlockList::checksumPad | ( |  | ) | const

Definition at line 369 of file mediablocklist.cc.

## ◆ createDigest()

bool zypp::media::MediaBlockList::createDigest | ( | Digest & | digest | ) | const

Definition at line 270 of file mediablocklist.cc.

## ◆ verifyDigest()

bool zypp::media::MediaBlockList::verifyDigest | ( | size_t | blkno,
|  | Digest & | digest ) const

Definition at line 276 of file mediablocklist.cc.

## ◆ haveChecksum()

bool zypp::media::MediaBlockList::haveChecksum | ( | size_t | blkno | ) | const
| inline

Definition at line 103 of file mediablocklist.h.

## ◆ setRsum()

void zypp::media::MediaBlockList::setRsum | ( | size_t | blkno,
|  | int | rsl,
|  | unsigned int | rs,
|  | size_t | rspad = 0 )

set / verify the (weak) rolling checksum over a single block

Definition at line 247 of file mediablocklist.cc.

## ◆ setRsumSequence()

void zypp::media::MediaBlockList::setRsumSequence | ( | uint | seq | ) |

how many blocks in sequence need to have the correct checksums to be considered a match

Definition at line 264 of file mediablocklist.cc.

## ◆ checkRsum()

bool zypp::media::MediaBlockList::checkRsum | ( | size_t | blkno,
|  | const unsigned char * | buf,
|  | size_t | bufl ) const

Definition at line 334 of file mediablocklist.cc.

## ◆ updateRsum()

unsigned int zypp::media::MediaBlockList::updateRsum | ( | unsigned int | rs,
|  | const char * | bytes,
|  | size_t | len ) const

Definition at line 296 of file mediablocklist.cc.

## ◆ verifyRsum()

bool zypp::media::MediaBlockList::verifyRsum | ( | size_t | blkno,
|  | unsigned int | rs ) const

Definition at line 314 of file mediablocklist.cc.

## ◆ haveRsum()

bool zypp::media::MediaBlockList::haveRsum | ( | size_t | blkno | ) | const
| inline

Definition at line 120 of file mediablocklist.h.

## ◆ reuseBlocksOld()

void zypp::media::MediaBlockList::reuseBlocksOld | ( | FILE * | wfp,
|  | const std::string & | filename )

scan a file for blocks from our blocklist.

if we find a suitable block, it is removed from the list

Definition at line 769 of file mediablocklist.cc.

## ◆ reuseBlocks()

void zypp::media::MediaBlockList::reuseBlocks | ( | FILE * | wfp,
|  | const std::string & | filename )

Definition at line 439 of file mediablocklist.cc.

## ◆ asString()

std::string zypp::media::MediaBlockList::asString | ( |  | ) | const

return block list as string

Definition at line 1062 of file mediablocklist.cc.

## ◆ writeBlock()

void zypp::media::MediaBlockList::writeBlock | ( | size_t | blkno,
|  | FILE * | fp,
|  | const unsigned char * | buf,
|  | size_t | bufl,
|  | size_t | start,
|  | std::vector< bool > & | found ) const
| private

Definition at line 395 of file mediablocklist.cc.

## ◆ checkChecksumRotated()

bool zypp::media::MediaBlockList::checkChecksumRotated | ( | size_t | blkno,
|  | const unsigned char * | buf,
|  | size_t | bufl,
|  | size_t | start ) const
| private

Definition at line 376 of file mediablocklist.cc.

## Member Data Documentation

## ◆ filesize

off_t zypp::media::MediaBlockList::filesize
| private

Definition at line 140 of file mediablocklist.h.

## ◆ fsumtype

std::string zypp::media::MediaBlockList::fsumtype
| private

Definition at line 141 of file mediablocklist.h.

## ◆ fsum

UByteArray zypp::media::MediaBlockList::fsum
| private

Definition at line 142 of file mediablocklist.h.

## ◆ haveblocks

bool zypp::media::MediaBlockList::haveblocks
| private

Definition at line 144 of file mediablocklist.h.

## ◆ blocks

std::vector<MediaBlock> zypp::media::MediaBlockList::blocks
| private

Definition at line 145 of file mediablocklist.h.

## ◆ chksumtype

std::string zypp::media::MediaBlockList::chksumtype
| private

Definition at line 147 of file mediablocklist.h.

## ◆ chksumlen

int zypp::media::MediaBlockList::chksumlen
| private

Definition at line 148 of file mediablocklist.h.

## ◆ chksumpad

size_t zypp::media::MediaBlockList::chksumpad
| private

Definition at line 149 of file mediablocklist.h.

## ◆ chksums

std::vector<unsigned char> zypp::media::MediaBlockList::chksums
| private

Definition at line 150 of file mediablocklist.h.

## ◆ rsumlen

int zypp::media::MediaBlockList::rsumlen
| private

Definition at line 152 of file mediablocklist.h.

## ◆ rsumseq

uint zypp::media::MediaBlockList::rsumseq
| private

Definition at line 153 of file mediablocklist.h.

## ◆ rsumpad

size_t zypp::media::MediaBlockList::rsumpad
| private

Definition at line 154 of file mediablocklist.h.

## ◆ rsums

std::vector<unsigned int> zypp::media::MediaBlockList::rsums
| private

Definition at line 155 of file mediablocklist.h.

The documentation for this class was generated from the following files:

- zypp-curl/parser/mediablocklist.h
- zypp-curl/parser/mediablocklist.cc