From a9f7e3c05d7a1f40bfbcacc85fe3f785adac1fae Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Fri, 6 Nov 2015 14:15:19 +0100 Subject: Merging upstream version 1.1. Signed-off-by: Daniel Baumann --- main.c | 175 +++++++++++++++++++++++++++-------------------------------------- 1 file changed, 73 insertions(+), 102 deletions(-) (limited to 'main.c') diff --git a/main.c b/main.c index 0649d1d..97218de 100644 --- a/main.c +++ b/main.c @@ -1,5 +1,5 @@ /* Lunzip - Decompressor for lzip files - Copyright (C) 2010, 2011 Antonio Diaz Diaz. + Copyright (C) 2010, 2011, 2012 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 @@ -24,14 +24,14 @@ #define _FILE_OFFSET_BITS 64 #include +#include #include #include -#include #include +#include +#include #include #include -#include -#include #include #include #include @@ -63,7 +63,7 @@ long long int llabs( long long int number ); const char * const Program_name = "Lunzip"; const char * const program_name = "lunzip"; -const char * const program_year = "2011"; +const char * const program_year = "2012"; const char * invocation_name = 0; #ifdef O_BINARY @@ -80,11 +80,13 @@ struct { const char * from; const char * to; } const known_extensions[] = { char * output_filename = 0; int outfd = -1; int verbosity = 0; +const mode_t usr_rw = S_IRUSR | S_IWUSR; +const mode_t all_rw = S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH; mode_t outfd_mode = S_IRUSR | S_IWUSR; bool delete_output_on_interrupt = false; -/* assure at least a minimum size for buffer `buf' */ +/* assure at least a minimum size for buffer 'buf' */ static void * resize_buffer( void * buf, const int min_size ) { if( buf ) buf = realloc( buf, min_size ); @@ -102,21 +104,21 @@ static void show_help() { printf( "%s - Decompressor for lzip files.\n", Program_name ); printf( "\nUsage: %s [options] [files]\n", invocation_name ); - printf( "\nOptions:\n" ); - printf( " -h, --help display this help and exit\n" ); - printf( " -V, --version output version information and exit\n" ); - printf( " -c, --stdout send output to standard output\n" ); - printf( " -d, --decompress decompress (this is the default)\n" ); - printf( " -f, --force overwrite existing output files\n" ); - printf( " -k, --keep keep (don't delete) input files\n" ); - printf( " -o, --output= if reading stdin, place the output into \n" ); - printf( " -q, --quiet suppress all messages\n" ); - printf( " -t, --test test compressed file integrity\n" ); - printf( " -v, --verbose be verbose (a 2nd -v gives more)\n" ); - printf( "If no file names are given, %s decompresses from standard input to\n", program_name ); - printf( "standard output.\n" ); - printf( "\nReport bugs to lzip-bug@nongnu.org\n" ); - printf( "Lunzip home page: http://www.nongnu.org/lzip/lunzip.html\n" ); + printf( "\nOptions:\n" + " -h, --help display this help and exit\n" + " -V, --version output version information and exit\n" + " -c, --stdout send output to standard output\n" + " -d, --decompress decompress (this is the default)\n" + " -f, --force overwrite existing output files\n" + " -k, --keep keep (don't delete) input files\n" + " -o, --output= if reading stdin, place the output into \n" + " -q, --quiet suppress all messages\n" + " -t, --test test compressed file integrity\n" + " -v, --verbose be verbose (a 2nd -v gives more)\n" + "If no file names are given, lunzip decompresses from standard input to\n" + "standard output.\n" + "\nReport bugs to lzip-bug@nongnu.org\n" + "Lunzip home page: http://www.nongnu.org/lzip/lunzip.html\n" ); } @@ -124,9 +126,9 @@ static void show_version() { printf( "%s %s\n", Program_name, PROGVERSION ); printf( "Copyright (C) %s Antonio Diaz Diaz.\n", program_year ); - printf( "License GPLv3+: GNU GPL version 3 or later \n" ); - printf( "This is free software: you are free to change and redistribute it.\n" ); - printf( "There is NO WARRANTY, to the extent permitted by law.\n" ); + printf( "License GPLv3+: GNU GPL version 3 or later \n" + "This is free software: you are free to change and redistribute it.\n" + "There is NO WARRANTY, to the extent permitted by law.\n" ); } @@ -137,11 +139,12 @@ static const char * format_num( long long num ) enum { buf_size = 16, factor = 1024 }; static char buf[buf_size]; const char *p = ""; + bool exact = ( num % factor == 0 ); int i; for( i = 0; i < 8 && ( llabs( num ) > 9999 || - ( llabs( num ) >= factor && num % factor == 0 ) ); ++i ) - { num /= factor; p = prefix[i]; } + ( exact && llabs( num ) >= factor ) ); ++i ) + { num /= factor; if( num % factor != 0 ) exact = false; p = prefix[i]; } snprintf( buf, buf_size, "%lld %s", num, p ); return buf; } @@ -155,7 +158,7 @@ static int open_instream( const char * const name, if( infd < 0 ) { if( verbosity >= 0 ) - fprintf( stderr, "%s: Can't open input file `%s': %s.\n", + fprintf( stderr, "%s: Can't open input file '%s': %s.\n", program_name, name, strerror( errno ) ); } else @@ -168,10 +171,10 @@ static int open_instream( const char * const name, if( i != 0 || ( !S_ISREG( mode ) && ( !to_stdout || !can_read ) ) ) { if( verbosity >= 0 ) - fprintf( stderr, "%s: Input file `%s' is not a regular file%s.\n", + fprintf( stderr, "%s: Input file '%s' is not a regular file%s.\n", program_name, name, ( can_read && !to_stdout ) ? - " and `--stdout' was not specified" : "" ); + " and '--stdout' was not specified" : "" ); close( infd ); infd = -1; } @@ -213,8 +216,8 @@ static void set_d_outname( const char * const name ) output_filename = resize_buffer( output_filename, strlen( name ) + 4 + 1 ); strcpy( output_filename, name ); strcat( output_filename, ".out" ); - if( verbosity >= 0 ) - fprintf( stderr, "%s: Can't guess original name for `%s' -- using `%s'.\n", + if( verbosity >= 1 ) + fprintf( stderr, "%s: Can't guess original name for '%s' -- using '%s'.\n", program_name, name, output_filename ); } @@ -228,10 +231,10 @@ static bool open_outstream( const bool force ) if( outfd < 0 && verbosity >= 0 ) { if( errno == EEXIST ) - fprintf( stderr, "%s: Output file %s already exists, skipping.\n", + fprintf( stderr, "%s: Output file '%s' already exists, skipping.\n", program_name, output_filename ); else - fprintf( stderr, "%s: Can't create output file `%s': %s.\n", + fprintf( stderr, "%s: Can't create output file '%s': %s.\n", program_name, output_filename, strerror( errno ) ); } return ( outfd >= 0 ); @@ -244,10 +247,10 @@ void cleanup_and_fail( const int retval ) { delete_output_on_interrupt = false; if( verbosity >= 0 ) - fprintf( stderr, "%s: Deleting output file `%s', if it exists.\n", + fprintf( stderr, "%s: Deleting output file '%s', if it exists.\n", program_name, output_filename ); if( outfd >= 0 ) { close( outfd ); outfd = -1; } - if( remove( output_filename ) != 0 ) + if( remove( output_filename ) != 0 && errno != ENOENT ) show_error( "WARNING: deletion of output file (apparently) failed.", 0, false ); } exit( retval ); @@ -257,31 +260,26 @@ void cleanup_and_fail( const int retval ) /* Set permissions, owner and times. */ static void close_and_set_permissions( const struct stat * const in_statsp ) { - bool error = false; + bool warning = false; if( in_statsp ) { + /* fchown will in many cases return with EPERM, which can be safely ignored. */ if( ( fchown( outfd, in_statsp->st_uid, in_statsp->st_gid ) != 0 && errno != EPERM ) || - fchmod( outfd, in_statsp->st_mode ) != 0 ) - error = true; - /* fchown will in many cases return with EPERM, which can be safely ignored. */ + fchmod( outfd, in_statsp->st_mode ) != 0 ) warning = true; } - if( close( outfd ) == 0 ) outfd = -1; - else cleanup_and_fail( 1 ); + if( close( outfd ) != 0 ) cleanup_and_fail( 1 ); + outfd = -1; delete_output_on_interrupt = false; - if( !in_statsp ) return; - if( !error ) + if( in_statsp ) { struct utimbuf t; t.actime = in_statsp->st_atime; t.modtime = in_statsp->st_mtime; - if( utime( output_filename, &t ) != 0 ) error = true; + if( utime( output_filename, &t ) != 0 ) warning = true; } - if( error ) - { + if( warning && verbosity >= 1 ) show_error( "Can't change output file attributes.", 0, false ); - cleanup_and_fail( 1 ); - } } @@ -290,17 +288,20 @@ static int decompress( const int infd, struct Pretty_print * const pp, { long long partial_file_pos = 0; struct Range_decoder rdec; - int retval = 0, i, result; + int retval = 0, result; bool first_member; - Rd_init( &rdec, infd ); + if( !Rd_init( &rdec, infd ) ) + { + show_error( "Not enough memory. Find a machine with more memory.", 0, false ); + cleanup_and_fail( 1 ); + } for( first_member = true; ; first_member = false, Pp_reset( pp ) ) { File_header header; struct LZ_decoder decoder; Rd_reset_member_position( &rdec ); - for( i = 0; i < Fh_size; ++i ) - header[i] = Rd_get_byte( &rdec ); + Rd_read_data( &rdec, header, Fh_size ); if( Rd_finished( &rdec ) ) /* End Of File */ { if( first_member ) @@ -326,7 +327,7 @@ static int decompress( const int infd, struct Pretty_print * const pp, { Pp_show_msg( pp, "Invalid dictionary size in member header" ); retval = 2; break; } - if( verbosity >= 1 ) + if( verbosity >= 2 || ( verbosity == 1 && first_member ) ) { Pp_show_msg( pp, 0 ); if( verbosity >= 2 ) @@ -334,8 +335,12 @@ static int decompress( const int infd, struct Pretty_print * const pp, Fh_version( header ), format_num( Fh_get_dictionary_size( header ) ) ); } - LZd_init( &decoder, header, &rdec, outfd ); + if( !LZd_init( &decoder, header, &rdec, outfd ) ) + { + show_error( "Not enough memory. Find a machine with more memory.", 0, false ); + cleanup_and_fail( 1 ); + } result = LZd_decode_member( &decoder, pp ); partial_file_pos += Rd_member_position( &rdec ); LZd_free( &decoder ); @@ -352,11 +357,14 @@ static int decompress( const int infd, struct Pretty_print * const pp, } retval = 2; break; } - if( verbosity >= 1 ) + if( verbosity >= 2 ) { if( testing ) fprintf( stderr, "ok\n" ); else fprintf( stderr, "done\n" ); } } Rd_free( &rdec ); + if( verbosity == 1 && retval == 0 ) + { if( testing ) fprintf( stderr, "ok\n" ); + else fprintf( stderr, "done\n" ); } return retval; } @@ -382,7 +390,7 @@ void Pp_init( struct Pretty_print * const pp, const char * const filenames[], { unsigned int stdin_name_len; int i; - pp->name_ = 0; + pp->name = 0; pp->stdin_name = "(stdin)"; pp->longest_name = 0; pp->verbosity = v; @@ -407,8 +415,8 @@ void Pp_show_msg( struct Pretty_print * const pp, const char * const msg ) { int i, len; pp->first_post = false; - fprintf( stderr, " %s: ", pp->name_ ); - len = pp->longest_name - strlen( pp->name_ ); + fprintf( stderr, " %s: ", pp->name ); + len = pp->longest_name - strlen( pp->name ); for( i = 0; i < len; ++i ) fprintf( stderr, " " ); if( !msg ) fflush( stderr ); } @@ -428,7 +436,7 @@ void show_error( const char * const msg, const int errcode, const bool help ) fprintf( stderr, "\n" ); } if( help && invocation_name && invocation_name[0] ) - fprintf( stderr, "Try `%s --help' for more information.\n", + fprintf( stderr, "Try '%s --help' for more information.\n", invocation_name ); } } @@ -442,45 +450,6 @@ void internal_error( const char * const msg ) } -/* Returns the number of bytes really read. - If (returned value < size) and (errno == 0), means EOF was reached. -*/ -int readblock( const int fd, uint8_t * const buf, const int size ) - { - int rest = size; - while( true ) - { - int n; - errno = 0; - if( rest <= 0 ) break; - n = read( fd, buf + size - rest, rest ); - if( n > 0 ) rest -= n; - else if( n == 0 ) break; - else if( errno != EINTR && errno != EAGAIN ) break; - } - return ( rest > 0 ) ? size - rest : size; - } - - -/* Returns the number of bytes really written. - If (returned value < size), it is always an error. -*/ -int writeblock( const int fd, const uint8_t * const buf, const int size ) - { - int rest = size; - while( true ) - { - int n; - errno = 0; - if( rest <= 0 ) break; - n = write( fd, buf + size - rest, rest ); - if( n > 0 ) rest -= n; - else if( errno && errno != EINTR && errno != EAGAIN ) break; - } - return ( rest > 0 ) ? size - rest : size; - } - - int main( const int argc, const char * const argv[] ) { const char * input_filename = ""; @@ -516,6 +485,7 @@ int main( const int argc, const char * const argv[] ) invocation_name = argv[0]; CRC32_init(); + if( !ap_init( &parser, argc, argv, options, 0 ) ) { show_error( "Memory exhausted.", 0, false ); return 1; } if( ap_error( &parser ) ) /* bad option */ @@ -547,6 +517,9 @@ int main( const int argc, const char * const argv[] ) _fsetmode( stdout, "b" ); #endif + if( testing ) + outfd = -1; + for( ; argind < ap_arguments( &parser ); ++argind ) { if( strcmp( ap_argument( &parser, argind ), "-" ) ) @@ -567,8 +540,6 @@ int main( const int argc, const char * const argv[] ) set_signals(); Pp_init( &pp, filenames, num_filenames, verbosity ); - if( testing ) - outfd = -1; output_filename = resize_buffer( output_filename, 1 ); for( i = 0; i < num_filenames; ++i ) @@ -591,7 +562,7 @@ int main( const int argc, const char * const argv[] ) output_filename = resize_buffer( output_filename, strlen( default_output_filename ) + 1 ); strcpy( output_filename, default_output_filename ); - outfd_mode = S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH | S_IWOTH; + outfd_mode = all_rw; if( !open_outstream( force ) ) { if( outfd == -1 && retval < 1 ) retval = 1; @@ -612,7 +583,7 @@ int main( const int argc, const char * const argv[] ) else { set_d_outname( input_filename ); - outfd_mode = S_IRUSR | S_IWUSR; + outfd_mode = usr_rw; if( !open_outstream( force ) ) { if( outfd == -1 && retval < 1 ) retval = 1; -- cgit v1.2.3