diff options
Diffstat (limited to 'tarlz.h')
| -rw-r--r-- | tarlz.h | 68 |
1 files changed, 55 insertions, 13 deletions
@@ -1,5 +1,5 @@ /* Tarlz - Archiver with multimember lzip compression - Copyright (C) 2013-2018 Antonio Diaz Diaz. + Copyright (C) 2013-2019 Antonio Diaz Diaz. 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 @@ -16,7 +16,7 @@ */ enum { header_size = 512 }; -typedef char Tar_header[header_size]; +typedef uint8_t Tar_header[header_size]; enum Offsets { name_o = 0, mode_o = 100, uid_o = 108, gid_o = 116, size_o = 124, @@ -33,13 +33,13 @@ enum Lengths { enum Typeflag { tf_regular = '0', tf_link = '1', tf_symlink = '2', tf_chardev = '3', tf_blockdev = '4', tf_directory = '5', tf_fifo = '6', tf_hiperf = '7', - tf_extended = 'x' }; + tf_global = 'g', tf_extended = 'x' }; const uint8_t ustar_magic[magic_l] = { 0x75, 0x73, 0x74, 0x61, 0x72, 0 }; // "ustar\0" -inline bool verify_ustar_magic( const uint8_t * const buf ) - { return std::memcmp( buf + magic_o, ustar_magic, magic_l ) == 0; } +inline bool verify_ustar_magic( const uint8_t * const header ) + { return std::memcmp( header + magic_o, ustar_magic, magic_l ) == 0; } class CRC32C // Uses CRC32-C (Castagnoli) polynomial. @@ -101,15 +101,44 @@ struct Extended // stores metadata from/for extended records void reset() { linkpath.clear(); path.clear(); size = 0; crc_present = false; } bool empty() { return linkpath.empty() && path.empty() && size == 0; } - bool parse( const int infd, const Tar_header header, const bool permissive ); + bool parse( const char * const buf, const unsigned long long edsize, + const bool permissive ); + }; + + +enum { initial_line_length = 1000 }; // must be >= 77 + +class Resizable_buffer + { + char * p; + unsigned size_; + +public: + explicit Resizable_buffer( const unsigned initial_size ) + : p( (char *)std::malloc( initial_size ) ), size_( p ? initial_size : 0 ) {} + ~Resizable_buffer() { if( p ) std::free( p ); p = 0; size_ = 0; } + + bool resize( const unsigned new_size ) + { + if( size_ < new_size ) + { + char * const tmp = (char *)std::realloc( p, new_size ); + if( !tmp ) return false; + p = tmp; size_ = new_size; + } + return true; + } + char * operator()() const { return p; } + unsigned size() const { return size_; } }; // defined in create.cc +enum Solidity { no_solid, dsolid, asolid, solid }; extern int cl_owner; extern int cl_group; -extern int cl_solid; -unsigned ustar_chksum( const uint8_t * const buf ); -bool verify_ustar_chksum( const uint8_t * const buf ); +extern Solidity solidity; +unsigned ustar_chksum( const uint8_t * const header ); +bool verify_ustar_chksum( const uint8_t * const header ); class Arg_parser; int concatenate( const std::string & archive_name, const Arg_parser & parser, const int filenames ); @@ -117,16 +146,29 @@ int encode( const std::string & archive_name, const Arg_parser & parser, const int filenames, const int level, const bool append ); // defined in extract.cc +bool block_is_zero( const uint8_t * const buf, const int size ); +void format_member_name( const Extended & extended, const Tar_header header, + Resizable_buffer & rbuf, const bool long_format ); +const char * remove_leading_slash( const char * const filename ); +bool compare_prefix_dir( const char * const dir, const char * const name ); +bool compare_tslash( const char * const name1, const char * const name2 ); +unsigned long long parse_octal( const uint8_t * const ptr, const int size ); int decode( const std::string & archive_name, const Arg_parser & parser, - const int filenames, const bool keep_damaged, const bool listing, - const bool missing_crc, const bool permissive ); + const int filenames, const int num_workers, const int debug_level, + const bool keep_damaged, const bool listing, const bool missing_crc, + const bool permissive ); + +// defined in list_lz.cc +class Lzip_index; +int list_lz( const Arg_parser & parser, std::vector< char > & name_pending, + const Lzip_index & lzip_index, const int filenames, + const int debug_level, const int infd, const int num_workers, + const bool missing_crc, const bool permissive ); // defined in main.cc extern int verbosity; int open_instream( const std::string & name ); int open_outstream( const std::string & name, const bool create = true ); -int readblock( const int fd, uint8_t * const buf, const int size ); -int writeblock( const int fd, const uint8_t * const buf, const int size ); void show_error( const char * const msg, const int errcode = 0, const bool help = false ); void show_file_error( const char * const filename, const char * const msg, |