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Diffstat (limited to 'Build/source/libs/zziplib/zziplib-0.13.59/bins/zzxorcat.c')
-rw-r--r-- | Build/source/libs/zziplib/zziplib-0.13.59/bins/zzxorcat.c | 113 |
1 files changed, 113 insertions, 0 deletions
diff --git a/Build/source/libs/zziplib/zziplib-0.13.59/bins/zzxorcat.c b/Build/source/libs/zziplib/zziplib-0.13.59/bins/zzxorcat.c new file mode 100644 index 00000000000..97fcd51fd32 --- /dev/null +++ b/Build/source/libs/zziplib/zziplib-0.13.59/bins/zzxorcat.c @@ -0,0 +1,113 @@ +/* + * Copyright (c) 2000,2001,2002 Guido Draheim <guidod@gmx.de> + * Use freely under the restrictions of the ZLIB License + * + * show zip-reading with xor-obfuscation. + * Note that the difference to the standard zzcat.c is quite small. + */ + +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <ctype.h> +#include <zzip/zzip.h> +#include <zzip/plugin.h> + +#if defined ZZIP_HAVE_UNISTD_H +#include <unistd.h> +#elif defined ZZIP_HAVE_IO_H +#include <io.h> +#else +#error need posix io for this example +#endif + +#ifndef O_BINARY +#define O_BINARY 0 +#endif + +static const char usage[] = +{ + " zzxorcat [-#] <file>... \n" + " - prints the file to stdout, so you may want to redirect the output; \n" + " the file is part of an inflated zip-archive obfuscated with xor value,\n" + " given by the numeric option (default is 0x55). \n" + " to get 'README' from dist.dat you may write \n" + " zzcat dist/README \n" +}; + +static int xor_value; + +static zzip_ssize_t xor_read (int f, void* p, zzip_size_t l) +{ + zzip_ssize_t r = read(f, p, l); + zzip_ssize_t x; char* q; for (x=0, q=p; x < r; x++) q[x] ^= xor_value; + return r; +} + +static zzip_plugin_io_handlers xor_handlers; +static zzip_strings_t xor_fileext[] = { ".dat", "", 0 }; + +int +main (int argc, char ** argv) +{ + int argn; + xor_value = 0x55; + + if (argc <= 1 || ! strcmp (argv[1], "--help")) + { + printf (usage); + return 0; + } + if (! strcmp (argv[1], "--version")) + { + printf (__FILE__" version "ZZIP_PACKAGE" "ZZIP_VERSION"\n"); + return 0; + } + + zzip_init_io (&xor_handlers, 0); xor_handlers.fd.read = &xor_read; + + for (argn=1; argn < argc; argn++) + { + ZZIP_FILE* fp; + + if (argv[argn][0] == '-') + { + if (isdigit(argv[argn][1])) xor_value = atoi (argv[argn]+1); + continue; + } + + fp = zzip_open_ext_io (argv[argn], O_RDONLY|O_BINARY, + ZZIP_CASELESS|ZZIP_ONLYZIP, + xor_fileext, &xor_handlers); + if (! fp) + { + perror (argv[argn]); + continue; + }else{ + char buf[17]; + zzip_ssize_t n; + + /* read chunks of 16 bytes into buf and print them to stdout */ + while (0 < (n = zzip_read(fp, buf, 16))) + { + buf[n] = '\0'; +# ifdef STDOUT_FILENO + write (STDOUT_FILENO, buf, n); +# else + fwrite (buf, 1, n, stdout); +# endif + } + + if (n == -1) + perror (argv[n]); + } + } + + return 0; +} + +/* + * Local variables: + * c-file-style: "stroustrup" + * End: + */ |