diff options
Diffstat (limited to 'main.cc')
| -rw-r--r-- | main.cc | 389 |
1 files changed, 221 insertions, 168 deletions
@@ -1,24 +1,24 @@ -/* Tarlz - Archiver with multimember lzip compression - Copyright (C) 2013-2019 Antonio Diaz Diaz. +/* Tarlz - Archiver with multimember lzip compression + Copyright (C) 2013-2020 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 - the Free Software Foundation, either version 2 of the License, or - (at your option) any later version. + 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. + 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. - You should have received a copy of the GNU General Public License - along with this program. If not, see <http://www.gnu.org/licenses/>. + You should have received a copy of the GNU General Public License + along with this program. If not, see <http://www.gnu.org/licenses/>. */ /* - Exit status: 0 for a normal exit, 1 for environmental problems - (file not found, invalid flags, I/O errors, etc), 2 to indicate a - corrupt or invalid input file, 3 for an internal consistency error - (eg, bug) which caused tarlz to panic. + Exit status: 0 for a normal exit, 1 for environmental problems (file not + found, files differ, invalid flags, I/O errors, etc), 2 to indicate a + corrupt or invalid input file, 3 for an internal consistency error + (eg, bug) which caused tarlz to panic. */ #define _FILE_OFFSET_BITS 64 @@ -29,6 +29,7 @@ #include <cstdio> #include <cstdlib> #include <cstring> +#include <ctime> #include <string> #include <vector> #include <fcntl.h> @@ -59,9 +60,8 @@ int verbosity = 0; namespace { const char * const program_name = "tarlz"; -const char * const program_year = "2019"; +const char * const program_year = "2020"; const char * invocation_name = program_name; // default value -bool dereference = false; void show_help( const long num_online ) @@ -86,47 +86,49 @@ void show_help( const long num_online ) "can be used to recover some of the damaged members.\n" "\nUsage: %s [options] [files]\n", invocation_name ); std::printf( "\nOptions:\n" - " --help display this help and exit\n" - " -V, --version output version information and exit\n" - " -A, --concatenate append archives to the end of an archive\n" - " -B, --data-size=<bytes> set target size of input data blocks [2x8=16 MiB]\n" - " -c, --create create a new archive\n" - " -C, --directory=<dir> change to directory <dir>\n" - " -d, --diff find differences between archive and file system\n" - " --ignore-ids ignore differences in owner and group IDs\n" - " --delete delete files/directories from an archive\n" - " --exclude=<pattern> exclude files matching a shell pattern\n" - " -f, --file=<archive> use archive file <archive>\n" - " -h, --dereference follow symlinks; archive the files they point to\n" - " -n, --threads=<n> set number of (de)compression threads [%ld]\n" - " -q, --quiet suppress all messages\n" - " -r, --append append files to the end of an archive\n" - " -t, --list list the contents of an archive\n" - " -v, --verbose verbosely list files processed\n" - " -x, --extract extract files/directories from an archive\n" - " -0 .. -9 set compression level [default 6]\n" - " --uncompressed don't compress the archive created\n" - " --asolid create solidly compressed appendable archive\n" - " --bsolid create per block compressed archive (default)\n" - " --dsolid create per directory compressed archive\n" - " --no-solid create per file compressed archive\n" - " --solid create solidly compressed archive\n" - " --anonymous equivalent to '--owner=root --group=root'\n" - " --owner=<owner> use <owner> name/ID for files added\n" - " --group=<group> use <group> name/ID for files added\n" - " --keep-damaged don't delete partially extracted files\n" - " --missing-crc exit with error status if missing extended CRC\n" - " --out-slots=<n> number of 1 MiB output packets buffered [64]\n" -/* " --permissive allow repeated extended headers and records\n"*/, + " --help display this help and exit\n" + " -V, --version output version information and exit\n" + " -A, --concatenate append archives to the end of an archive\n" + " -B, --data-size=<bytes> set target size of input data blocks [2x8=16 MiB]\n" + " -c, --create create a new archive\n" + " -C, --directory=<dir> change to directory <dir>\n" + " -d, --diff find differences between archive and file system\n" + " --ignore-ids ignore differences in owner and group IDs\n" + " --delete delete files/directories from an archive\n" + " --exclude=<pattern> exclude files matching a shell pattern\n" + " -f, --file=<archive> use archive file <archive>\n" + " -h, --dereference follow symlinks; archive the files they point to\n" + " --mtime=<date> use <date> as mtime for files added to archive\n" + " -n, --threads=<n> set number of (de)compression threads [%ld]\n" + " -p, --preserve-permissions don't subtract the umask on extraction\n" + " -q, --quiet suppress all messages\n" + " -r, --append append files to the end of an archive\n" + " -t, --list list the contents of an archive\n" + " -v, --verbose verbosely list files processed\n" + " -x, --extract extract files/directories from an archive\n" + " -0 .. -9 set compression level [default 6]\n" + " --uncompressed don't compress the archive created\n" + " --asolid create solidly compressed appendable archive\n" + " --bsolid create per block compressed archive (default)\n" + " --dsolid create per directory compressed archive\n" + " --no-solid create per file compressed archive\n" + " --solid create solidly compressed archive\n" + " --anonymous equivalent to '--owner=root --group=root'\n" + " --owner=<owner> use <owner> name/ID for files added to archive\n" + " --group=<group> use <group> name/ID for files added to archive\n" + " --keep-damaged don't delete partially extracted files\n" + " --missing-crc exit with error status if missing extended CRC\n" + " --out-slots=<n> number of 1 MiB output packets buffered [64]\n" +/* " --permissive allow repeated extended headers and records\n"*/, num_online ); if( verbosity >= 1 ) { - std::printf( " --debug=<level> (0-1) print debug statistics to stderr\n" ); + std::printf( " --debug=<level> (0-1) print debug statistics to stderr\n" ); } - std::printf( "\nExit status: 0 for a normal exit, 1 for environmental problems (file\n" - "not found, invalid flags, I/O errors, etc), 2 to indicate a corrupt or\n" - "invalid input file, 3 for an internal consistency error (eg, bug) which\n" - "caused tarlz to panic.\n" + std::printf( "\nExit status: 0 for a normal exit, 1 for environmental problems (file not\n" + "found, files differ, invalid flags, I/O errors, etc), 2 to indicate a\n" + "corrupt or invalid input file, 3 for an internal consistency error (eg, bug)\n" + "which caused tarlz to panic.\n" "\nReport bugs to lzip-bug@nongnu.org\n" "Tarlz home page: http://www.nongnu.org/lzip/tarlz.html\n" ); } @@ -193,6 +195,17 @@ unsigned long long getnum( const char * const ptr, } +void set_archive_name( std::string & archive_name, const std::string & new_name ) + { + static bool first_call = true; + + if( first_call ) { if( new_name != "-" ) archive_name = new_name; + first_call = false; return; } + show_error( "Only one archive can be specified.", 0, true ); + std::exit( 1 ); + } + + void set_mode( Program_mode & program_mode, const Program_mode new_mode ) { if( program_mode != m_none && program_mode != new_mode ) @@ -204,28 +217,58 @@ void set_mode( Program_mode & program_mode, const Program_mode new_mode ) } -void set_owner( const char * const arg ) +void set_mtime( long long & mtime, const char * arg ) + { + if( *arg == '@' ) + { mtime = getnum( arg + 1, 0, ( 1ULL << 33 ) - 1 ); return; } + else if( *arg == '.' || *arg == '/' ) + { + struct stat st; + if( stat( arg, &st ) == 0 ) { mtime = st.st_mtime; return; } + show_file_error( arg, "Can't stat", errno ); std::exit( 1 ); + } + else // format 'YYYY-MM-DD HH:MM:SS' + { + unsigned y, mo, d, h, m, s; + const int n = std::sscanf( arg, "%u-%u-%u %u:%u:%u", + &y, &mo, &d, &h, &m, &s ); + if( n == 6 && y >= 1970 && mo >= 1 ) + { + struct tm t; + t.tm_year = y - 1900; t.tm_mon = mo - 1; t.tm_mday = d; + t.tm_hour = h; t.tm_min = m; t.tm_sec = s; t.tm_isdst = -1; + mtime = std::mktime( &t ); if( mtime >= 0 ) return; + } + } + show_error( "Invalid mtime.", 0, true ); std::exit( 1 ); + } + + +void set_owner( int & owner, const char * const arg ) { const struct passwd * const pw = getpwnam( arg ); - if( pw ) cl_owner = pw->pw_uid; + if( pw ) owner = pw->pw_uid; else if( std::isdigit( (unsigned char)arg[0] ) ) - cl_owner = getnum( arg, 0, INT_MAX ); + owner = getnum( arg, 0, INT_MAX ); + else if( std::strcmp( arg, "root" ) == 0 ) owner = 0; else { show_file_error( arg, "Invalid owner" ); std::exit( 1 ); } } -void set_group( const char * const arg ) +void set_group( int & group, const char * const arg ) { const struct group * const gr = getgrnam( arg ); - if( gr ) cl_group = gr->gr_gid; + if( gr ) group = gr->gr_gid; else if( std::isdigit( (unsigned char)arg[0] ) ) - cl_group = getnum( arg, 0, INT_MAX ); + group = getnum( arg, 0, INT_MAX ); + else if( std::strcmp( arg, "root" ) == 0 ) group = 0; else { show_file_error( arg, "Invalid group" ); std::exit( 1 ); } } } // end namespace -int hstat( const char * const filename, struct stat * const st ) +int hstat( const char * const filename, struct stat * const st, + const bool dereference ) { return dereference ? stat( filename, st ) : lstat( filename, st ); } @@ -251,10 +294,10 @@ int open_outstream( const std::string & name, const bool create ) } -// This can be called from any thread, main thread or sub-threads alike, -// since they all call common helper functions that call cleanup_and_fail() -// in case of an error. -// +/* This can be called from any thread, main thread or sub-threads alike, + since they all call common helper functions that call cleanup_and_fail() + in case of an error. +*/ void cleanup_and_fail( const int retval ) { // calling 'exit' more than once results in undefined behavior @@ -278,10 +321,21 @@ void show_error( const char * const msg, const int errcode, const bool help ) } +void format_file_error( std::string & estr, const char * const filename, + const char * const msg, const int errcode ) + { + if( verbosity < 0 ) return; + estr += program_name; estr += ": "; estr += filename; estr += ": "; + estr += msg; + if( errcode > 0 ) { estr += ": "; estr += std::strerror( errcode ); } + estr += '\n'; + } + + void show_file_error( const char * const filename, const char * const msg, const int errcode ) { - if( verbosity >= 0 ) + if( verbosity >= 0 && msg && msg[0] ) std::fprintf( stderr, "%s: %s: %s%s%s\n", program_name, filename, msg, ( errcode > 0 ) ? ": " : "", ( errcode > 0 ) ? std::strerror( errcode ) : "" ); @@ -298,128 +352,131 @@ void internal_error( const char * const msg ) int main( const int argc, const char * const argv[] ) { - std::string archive_name; - int debug_level = 0; - int level = 6; // compression level, < 0 means uncompressed - int num_workers = -1; // start this many worker threads - int out_slots = 64; - Program_mode program_mode = m_none; - bool ignore_ids = false; - bool keep_damaged = false; - bool missing_crc = false; - bool permissive = false; if( argc > 0 ) invocation_name = argv[0]; - if( LZ_version()[0] < '1' ) - { show_error( "Bad library version. At least lzlib 1.0 is required." ); +#if !defined LZ_API_VERSION || LZ_API_VERSION < 1 // compile-time test +#error "lzlib 1.8 or newer needed." +#elif LZ_API_VERSION >= 2 + if( LZ_api_version() < 1 ) // runtime test + { show_error( "Wrong library version. At least lzlib 1.8 is required." ); return 1; } +#endif enum { opt_ano = 256, opt_aso, opt_bso, opt_crc, opt_dbg, opt_del, opt_dso, - opt_exc, opt_grp, opt_hlp, opt_id, opt_kd, opt_nso, opt_out, opt_own, - opt_per, opt_sol, opt_un }; + opt_exc, opt_grp, opt_hlp, opt_id, opt_kd, opt_mti, opt_nso, opt_out, + opt_own, opt_per, opt_sol, opt_un }; const Arg_parser::Option options[] = { - { '0', 0, Arg_parser::no }, - { '1', 0, Arg_parser::no }, - { '2', 0, Arg_parser::no }, - { '3', 0, Arg_parser::no }, - { '4', 0, Arg_parser::no }, - { '5', 0, Arg_parser::no }, - { '6', 0, Arg_parser::no }, - { '7', 0, Arg_parser::no }, - { '8', 0, Arg_parser::no }, - { '9', 0, Arg_parser::no }, - { 'A', "concatenate", Arg_parser::no }, - { 'B', "data-size", Arg_parser::yes }, - { 'c', "create", Arg_parser::no }, - { 'C', "directory", Arg_parser::yes }, - { 'd', "diff", Arg_parser::no }, - { 'f', "file", Arg_parser::yes }, - { 'h', "dereference", Arg_parser::no }, - { 'H', "format", Arg_parser::yes }, - { 'n', "threads", Arg_parser::yes }, - { 'q', "quiet", Arg_parser::no }, - { 'r', "append", Arg_parser::no }, - { 't', "list", Arg_parser::no }, - { 'v', "verbose", Arg_parser::no }, - { 'V', "version", Arg_parser::no }, - { 'x', "extract", Arg_parser::no }, - { opt_ano, "anonymous", Arg_parser::no }, - { opt_aso, "asolid", Arg_parser::no }, - { opt_bso, "bsolid", Arg_parser::no }, - { opt_dbg, "debug", Arg_parser::yes }, - { opt_del, "delete", Arg_parser::no }, - { opt_dso, "dsolid", Arg_parser::no }, - { opt_exc, "exclude", Arg_parser::yes }, - { opt_grp, "group", Arg_parser::yes }, - { opt_hlp, "help", Arg_parser::no }, - { opt_id, "ignore-ids", Arg_parser::no }, - { opt_kd, "keep-damaged", Arg_parser::no }, - { opt_crc, "missing-crc", Arg_parser::no }, - { opt_nso, "no-solid", Arg_parser::no }, - { opt_out, "out-slots", Arg_parser::yes }, - { opt_own, "owner", Arg_parser::yes }, - { opt_per, "permissive", Arg_parser::no }, - { opt_sol, "solid", Arg_parser::no }, - { opt_un, "uncompressed", Arg_parser::no }, - { 0 , 0, Arg_parser::no } }; - - const Arg_parser parser( argc, argv, options, true ); + { '0', 0, Arg_parser::no }, + { '1', 0, Arg_parser::no }, + { '2', 0, Arg_parser::no }, + { '3', 0, Arg_parser::no }, + { '4', 0, Arg_parser::no }, + { '5', 0, Arg_parser::no }, + { '6', 0, Arg_parser::no }, + { '7', 0, Arg_parser::no }, + { '8', 0, Arg_parser::no }, + { '9', 0, Arg_parser::no }, + { 'A', "concatenate", Arg_parser::no }, + { 'B', "data-size", Arg_parser::yes }, + { 'c', "create", Arg_parser::no }, + { 'C', "directory", Arg_parser::yes }, + { 'd', "diff", Arg_parser::no }, + { 'f', "file", Arg_parser::yes }, + { 'h', "dereference", Arg_parser::no }, + { 'H', "format", Arg_parser::yes }, + { 'n', "threads", Arg_parser::yes }, + { 'p', "preserve-permissions", Arg_parser::no }, + { 'q', "quiet", Arg_parser::no }, + { 'r', "append", Arg_parser::no }, + { 't', "list", Arg_parser::no }, + { 'v', "verbose", Arg_parser::no }, + { 'V', "version", Arg_parser::no }, + { 'x', "extract", Arg_parser::no }, + { opt_ano, "anonymous", Arg_parser::no }, + { opt_aso, "asolid", Arg_parser::no }, + { opt_bso, "bsolid", Arg_parser::no }, + { opt_dbg, "debug", Arg_parser::yes }, + { opt_del, "delete", Arg_parser::no }, + { opt_dso, "dsolid", Arg_parser::no }, + { opt_exc, "exclude", Arg_parser::yes }, + { opt_grp, "group", Arg_parser::yes }, + { opt_hlp, "help", Arg_parser::no }, + { opt_id, "ignore-ids", Arg_parser::no }, + { opt_kd, "keep-damaged", Arg_parser::no }, + { opt_crc, "missing-crc", Arg_parser::no }, + { opt_mti, "mtime", Arg_parser::yes }, + { opt_nso, "no-solid", Arg_parser::no }, + { opt_out, "out-slots", Arg_parser::yes }, + { opt_own, "owner", Arg_parser::yes }, + { opt_per, "permissive", Arg_parser::no }, + { opt_sol, "solid", Arg_parser::no }, + { opt_un, "uncompressed", Arg_parser::no }, + { 0, 0, Arg_parser::no } }; + + const Arg_parser parser( argc, argv, options, true ); // in_order if( parser.error().size() ) // bad option { show_error( parser.error().c_str(), 0, true ); return 1; } + Cl_options cl_opts( parser ); const long num_online = std::max( 1L, sysconf( _SC_NPROCESSORS_ONLN ) ); long max_workers = sysconf( _SC_THREAD_THREADS_MAX ); if( max_workers < 1 || max_workers > INT_MAX / (int)sizeof (pthread_t) ) max_workers = INT_MAX / sizeof (pthread_t); - int filenames = 0; for( int argind = 0; argind < parser.arguments(); ++argind ) { const int code = parser.code( argind ); if( !code ) // skip non-options - { if( parser.argument( argind ).size() ) ++filenames; continue; } + { + if( parser.argument( argind ).empty() ) + { show_error( "Empty non-option argument." ); return 1; } + ++cl_opts.filenames; continue; + } const std::string & sarg = parser.argument( argind ); const char * const arg = sarg.c_str(); switch( code ) { case '0': case '1': case '2': case '3': case '4': case '5': case '6': case '7': case '8': case '9': - level = code - '0'; break; - case 'A': set_mode( program_mode, m_concatenate ); break; - case 'B': cl_data_size = getnum( arg, min_data_size, max_data_size ); + cl_opts.level = code - '0'; break; + case 'A': set_mode( cl_opts.program_mode, m_concatenate ); break; + case 'B': cl_opts.data_size = getnum( arg, min_data_size, max_data_size ); break; - case 'c': set_mode( program_mode, m_create ); break; + case 'c': set_mode( cl_opts.program_mode, m_create ); break; case 'C': break; // skip chdir - case 'd': set_mode( program_mode, m_diff ); break; - case 'f': if( sarg != "-" ) archive_name = sarg; break; - case 'h': dereference = true; break; + case 'd': set_mode( cl_opts.program_mode, m_diff ); break; + case 'f': set_archive_name( cl_opts.archive_name, sarg ); break; + case 'h': cl_opts.dereference = true; break; case 'H': break; // ignore format - case 'n': num_workers = getnum( arg, 0, max_workers ); break; + case 'n': cl_opts.num_workers = getnum( arg, 0, max_workers ); break; + case 'p': cl_opts.preserve_permissions = true; break; case 'q': verbosity = -1; break; - case 'r': set_mode( program_mode, m_append ); break; - case 't': set_mode( program_mode, m_list ); break; + case 'r': set_mode( cl_opts.program_mode, m_append ); break; + case 't': set_mode( cl_opts.program_mode, m_list ); break; case 'v': if( verbosity < 4 ) ++verbosity; break; case 'V': show_version(); return 0; - case 'x': set_mode( program_mode, m_extract ); break; - case opt_ano: set_owner( "root" ); set_group( "root" ); break; - case opt_aso: solidity = asolid; break; - case opt_bso: solidity = bsolid; break; - case opt_crc: missing_crc = true; break; - case opt_dbg: debug_level = getnum( arg, 0, 3 ); break; - case opt_del: set_mode( program_mode, m_delete ); break; - case opt_dso: solidity = dsolid; break; + case 'x': set_mode( cl_opts.program_mode, m_extract ); break; + case opt_ano: set_owner( cl_opts.owner, "root" ); + set_group( cl_opts.group, "root" ); break; + case opt_aso: cl_opts.solidity = asolid; break; + case opt_bso: cl_opts.solidity = bsolid; break; + case opt_crc: cl_opts.missing_crc = true; break; + case opt_dbg: cl_opts.debug_level = getnum( arg, 0, 3 ); break; + case opt_del: set_mode( cl_opts.program_mode, m_delete ); break; + case opt_dso: cl_opts.solidity = dsolid; break; case opt_exc: Exclude::add_pattern( sarg ); break; - case opt_grp: set_group( arg ); break; + case opt_grp: set_group( cl_opts.group, arg ); break; case opt_hlp: show_help( num_online ); return 0; - case opt_id: ignore_ids = true; break; - case opt_kd: keep_damaged = true; break; - case opt_nso: solidity = no_solid; break; - case opt_out: out_slots = getnum( arg, 1, 1024 ); break; - case opt_own: set_owner( arg ); break; - case opt_per: permissive = true; break; - case opt_sol: solidity = solid; break; - case opt_un: level = -1; break; + case opt_id: cl_opts.ignore_ids = true; break; + case opt_kd: cl_opts.keep_damaged = true; break; + case opt_mti: set_mtime( cl_opts.mtime, arg ); break; + case opt_nso: cl_opts.solidity = no_solid; break; + case opt_out: cl_opts.out_slots = getnum( arg, 1, 1024 ); break; + case opt_own: set_owner( cl_opts.owner, arg ); break; + case opt_per: cl_opts.permissive = true; break; + case opt_sol: cl_opts.solidity = solid; break; + case opt_un: cl_opts.level = -1; break; default : internal_error( "uncaught option" ); } } // end process options @@ -429,22 +486,18 @@ int main( const int argc, const char * const argv[] ) setmode( STDOUT_FILENO, O_BINARY ); #endif - if( num_workers < 0 ) num_workers = std::min( num_online, max_workers ); + if( cl_opts.num_workers < 0 ) // 0 disables multi-threading + cl_opts.num_workers = std::min( num_online, max_workers ); - switch( program_mode ) + switch( cl_opts.program_mode ) { - case m_none: show_error( "Missing operation.", 0, true ); return 2; + case m_none: show_error( "Missing operation.", 0, true ); return 1; case m_append: - case m_create: return encode( archive_name, parser, filenames, level, - num_workers, out_slots, debug_level, - program_mode == m_append, dereference ); - case m_concatenate: return concatenate( archive_name, parser, filenames ); - case m_delete: return delete_members( archive_name, parser, filenames, - missing_crc, permissive ); + case m_create: return encode( cl_opts ); + case m_concatenate: return concatenate( cl_opts ); + case m_delete: return delete_members( cl_opts ); case m_diff: case m_extract: - case m_list: return decode( archive_name, parser, filenames, - num_workers, debug_level, program_mode, - ignore_ids, keep_damaged, missing_crc, permissive ); + case m_list: return decode( cl_opts ); } } |