diff options
Diffstat (limited to 'tarlz.h')
| -rw-r--r-- | tarlz.h | 76 |
1 files changed, 49 insertions, 27 deletions
@@ -1,5 +1,5 @@ /* Tarlz - Archiver with multimember lzip compression - Copyright (C) 2013-2020 Antonio Diaz Diaz. + Copyright (C) 2013-2021 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 @@ -15,6 +15,8 @@ along with this program. If not, see <http://www.gnu.org/licenses/>. */ +#include <sys/types.h> + #define max_file_size ( LLONG_MAX - header_size ) enum { header_size = 512 }; typedef uint8_t Tar_header[header_size]; @@ -71,6 +73,14 @@ inline bool dotdot_at_i( const char * const filename, const int i ) } +inline bool contains_dotdot( const char * const filename ) + { + for( int i = 0; filename[i]; ++i ) + if( dotdot_at_i( filename, i ) ) return true; + return false; + } + + class Resizable_buffer { char * p; @@ -103,6 +113,7 @@ public: class Extended // stores metadata from/for extended records { + static std::vector< std::string > unknown_keywords; // already diagnosed std::string linkpath_; // these are the real metadata std::string path_; long long file_size_; // >= 0 && <= max_file_size @@ -119,6 +130,8 @@ class Extended // stores metadata from/for extended records mutable bool crc_present_; void calculate_sizes() const; + void unknown_keyword( const char * const buf, + const unsigned long long size ) const; public: static const std::string crc_record; @@ -189,6 +202,14 @@ public: crc = c; } + uint32_t compute_crc( const uint8_t * const buffer, const int size ) const + { + uint32_t crc = 0xFFFFFFFFU; + for( int i = 0; i < size; ++i ) + crc = data[(crc^buffer[i])&0xFF] ^ ( crc >> 8 ); + return crc ^ 0xFFFFFFFFU; + } + // Calculates the crc of size bytes except a window of 8 bytes at pos uint32_t windowed_crc( const uint8_t * const buffer, const int pos, const int size ) const @@ -380,6 +401,8 @@ bool show_member_name( const Extended & extended, const Tar_header header, bool check_skip_filename( const Cl_options & cl_opts, std::vector< char > & name_pending, const char * const filename ); +mode_t get_umask(); +bool make_path( const std::string & name ); // defined in create.cc bool copy_file( const int infd, const int outfd, const long long max_size = -1 ); @@ -406,29 +429,7 @@ int encode_lz( const Cl_options & cl_opts, const char * const archive_namep, const int dictionary_size, const int match_len_limit, const int outfd ); -// defined in delete.cc -class Lzip_index; -bool safe_seek( const int fd, const long long pos ); -int tail_copy( const char * const archive_namep, const Arg_parser & parser, - std::vector< char > & name_pending, - const Lzip_index & lzip_index, const long long istream_pos, - const int infd, const int outfd, int retval ); -int delete_members( const Cl_options & cl_opts ); - -// defined in delete_lz.cc -int delete_members_lz( const Cl_options & cl_opts, - const char * const archive_namep, - std::vector< char > & name_pending, - const Lzip_index & lzip_index, - const int infd, const int outfd ); - -// defined in exclude.cc -namespace Exclude { -void add_pattern( const std::string & arg ); -bool excluded( const char * const filename ); -} // end namespace Exclude - -// defined in extract.cc +// defined in decode.cc bool compare_file_type( std::string & estr, std::string & ostr, const Cl_options & cl_opts, const Extended & extended, const Tar_header header ); @@ -439,12 +440,32 @@ bool compare_file_contents( std::string & estr, std::string & ostr, int decode( const Cl_options & cl_opts ); // defined in decode_lz.cc -int preadblock( const int fd, uint8_t * const buf, const int size, - const long long pos ); struct Archive_descriptor; int decode_lz( const Cl_options & cl_opts, const Archive_descriptor & ad, std::vector< char > & name_pending ); +// defined in delete.cc +bool safe_seek( const int fd, const long long pos ); +int tail_copy( const Arg_parser & parser, const Archive_descriptor & ad, + std::vector< char > & name_pending, const long long istream_pos, + const int outfd, int retval ); +int delete_members( const Cl_options & cl_opts ); + +// defined in delete_lz.cc +int delete_members_lz( const Cl_options & cl_opts, + const Archive_descriptor & ad, + std::vector< char > & name_pending, const int outfd ); + +// defined in exclude.cc +namespace Exclude { +void add_pattern( const std::string & arg ); +void clear(); +bool excluded( const char * const filename ); +} // end namespace Exclude + +// defined in extended.cc +extern const CRC32 crc32c; + // defined in lzip_index.cc int seek_read( const int fd, uint8_t * const buf, const int size, const long long pos ); @@ -455,7 +476,8 @@ struct stat; int hstat( const char * const filename, struct stat * const st, const bool dereference ); int open_instream( const std::string & name ); -int open_outstream( const std::string & name, const bool create = true ); +int open_outstream( const std::string & name, const bool create = true, + Resizable_buffer * const rbufp = 0 ); void cleanup_and_fail( const int retval = 1 ); // terminate the program void show_error( const char * const msg, const int errcode = 0, const bool help = false ); |