diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/export/extract_version_3.c | 24 |
1 files changed, 14 insertions, 10 deletions
diff --git a/src/export/extract_version_3.c b/src/export/extract_version_3.c index ffb6ad9..8e159c4 100644 --- a/src/export/extract_version_3.c +++ b/src/export/extract_version_3.c | |||
| @@ -10,30 +10,30 @@ | |||
| 10 | #define HUGEBLOCK (1024*1024) | 10 | #define HUGEBLOCK (1024*1024) |
| 11 | 11 | ||
| 12 | int main(int argc, char **argv) { | 12 | int main(int argc, char **argv) { |
| 13 | MAP in; | ||
| 14 | |||
| 15 | if( argc != 2 ) exit(111); | ||
| 16 | in = map_file( argv[1], 1 ); | ||
| 17 | |||
| 18 | unsigned const char xorkey [XORLEN] = "Just for Fun. Linus Torvalds."; | 13 | unsigned const char xorkey [XORLEN] = "Just for Fun. Linus Torvalds."; |
| 19 | unsigned char input [XORLEN]; | 14 | unsigned char input [XORLEN]; |
| 20 | unsigned char output [HUGEBLOCK]; | 15 | unsigned char output [HUGEBLOCK]; |
| 21 | char respath[32]; /* file_XXXXX\0 */ | 16 | char respath[32]; /* file_XXXXX\0 */ |
| 22 | int zres = 0, filenum = 0, resfile; | 17 | int zres = 0, filenum = 0, resfile; |
| 23 | size_t i, offs = 0, reported = 0; | 18 | size_t i, offs = 0, reported = 0; |
| 19 | MAP in; | ||
| 20 | |||
| 21 | if( argc != 2 ) exit(111); | ||
| 22 | in = map_file( argv[1], 1 ); | ||
| 24 | 23 | ||
| 25 | z_stream z; memset( &z, 0, sizeof(z)); | 24 | z_stream z; memset( &z, 0, sizeof(z)); |
| 26 | 25 | ||
| 27 | while( offs < in->size - XORLEN ) { | 26 | while( offs < in->size ) { |
| 28 | for( i=0; i<XORLEN; ++i ) input[i] = in->addr[offs+i] ^ xorkey[i]; | 27 | size_t inlen = offs + XORLEN < in->size ? XORLEN : in->size - offs; |
| 29 | z.next_in = input; z.avail_in = XORLEN; | 28 | for( i=0; i<inlen; ++i ) input[i] = in->addr[offs+i] ^ xorkey[i]; |
| 29 | z.next_in = input; z.avail_in = inlen; | ||
| 30 | z.next_out = output; z.avail_out = HUGEBLOCK; | 30 | z.next_out = output; z.avail_out = HUGEBLOCK; |
| 31 | inflateInit( &z ); zres = inflate( &z, Z_NO_FLUSH ); | 31 | inflateInit( &z ); zres = inflate( &z, Z_NO_FLUSH ); |
| 32 | if( (zres != Z_OK) && (zres != Z_STREAM_END) ) | 32 | if( (zres != Z_OK) && (zres != Z_STREAM_END) ) |
| 33 | goto error_continue; | 33 | goto error_continue; |
| 34 | 34 | ||
| 35 | z.next_in = in->addr + offs + XORLEN; | 35 | z.next_in = in->addr + offs + inlen; |
| 36 | z.avail_in = (unsigned int)(in->size - offs - XORLEN); | 36 | z.avail_in = (unsigned int)(in->size - offs - inlen); |
| 37 | while( zres == Z_OK ) zres = inflate( &z, Z_NO_FLUSH ); | 37 | while( zres == Z_OK ) zres = inflate( &z, Z_NO_FLUSH ); |
| 38 | 38 | ||
| 39 | if( zres != Z_STREAM_END ) { | 39 | if( zres != Z_STREAM_END ) { |
| @@ -44,6 +44,7 @@ error_continue: | |||
| 44 | } | 44 | } |
| 45 | 45 | ||
| 46 | sprintf( respath, "file_%05X", filenum++ ); | 46 | sprintf( respath, "file_%05X", filenum++ ); |
| 47 | |||
| 47 | resfile = open( respath, O_RDWR | O_CREAT, 0644 ); | 48 | resfile = open( respath, O_RDWR | O_CREAT, 0644 ); |
| 48 | if( resfile < 0 ) { | 49 | if( resfile < 0 ) { |
| 49 | fprintf( stderr, "Could not open output file %s\n", respath ); | 50 | fprintf( stderr, "Could not open output file %s\n", respath ); |
| @@ -62,5 +63,8 @@ error_continue: | |||
| 62 | inflateEnd(&z); memset( &z, 0, sizeof(z)); | 63 | inflateEnd(&z); memset( &z, 0, sizeof(z)); |
| 63 | } | 64 | } |
| 64 | unmap_file(&in); | 65 | unmap_file(&in); |
| 66 | if( reported < 10 ) | ||
| 67 | printf( "100%% " ); | ||
| 68 | fflush( stdout ); | ||
| 65 | return 0; | 69 | return 0; |
| 66 | } | 70 | } |
