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-rw-r--r--obfusc.c130
1 files changed, 0 insertions, 130 deletions
diff --git a/obfusc.c b/obfusc.c
deleted file mode 100644
index c62189c..0000000
--- a/obfusc.c
+++ /dev/null
@@ -1,130 +0,0 @@
-/*
- * Stand-alone tool to access the Puzzles obfuscation algorithm.
- *
- * To deobfuscate, use "obfusc -d":
- *
- * obfusc -d reads binary data from stdin, writes to stdout
- * obfusc -d <hex string> works on the given hex string instead of stdin
- * obfusc -d -h writes a hex string instead of binary to stdout
- *
- * To obfuscate, "obfusc -e":
- *
- * obfusc -e reads binary from stdin, writes hex to stdout
- * obfusc -e <hex string> works on the given hex string instead of stdin
- * obfusc -e -b writes binary instead of text to stdout
- *
- * The default output format is hex for -e and binary for -d
- * because that's the way obfuscation is generally used in
- * Puzzles. Either of -b and -h can always be specified to set it
- * explicitly.
- *
- * Data read from standard input is assumed always to be binary;
- * data provided on the command line is taken to be hex.
- */
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdarg.h>
-#include <string.h>
-#include <errno.h>
-
-#include "puzzles.h"
-
-int main(int argc, char **argv)
-{
- enum { BINARY, DEFAULT, HEX } outputmode = DEFAULT;
- char *inhex = NULL;
- unsigned char *data;
- int datalen;
- enum { UNKNOWN, DECODE, ENCODE } mode = UNKNOWN;
- bool doing_opts = true;
-
- while (--argc > 0) {
- char *p = *++argv;
-
- if (doing_opts && *p == '-') {
- if (!strcmp(p, "--")) {
- doing_opts = 0;
- continue;
- }
- p++;
- while (*p) {
- switch (*p) {
- case 'e':
- mode = ENCODE;
- break;
- case 'd':
- mode = DECODE;
- break;
- case 'b':
- outputmode = BINARY;
- break;
- case 'h':
- outputmode = HEX;
- break;
- default:
- fprintf(stderr, "obfusc: unrecognised option '-%c'\n",
- *p);
- return 1;
- }
- p++;
- }
- } else {
- if (!inhex) {
- inhex = p;
- } else {
- fprintf(stderr, "obfusc: expected at most one argument\n");
- return 1;
- }
- }
- }
-
- if (mode == UNKNOWN) {
- fprintf(stderr, "usage: obfusc < -e | -d > [ -b | -h ] [hex data]\n");
- return 0;
- }
-
- if (outputmode == DEFAULT)
- outputmode = (mode == DECODE ? BINARY : HEX);
-
- if (inhex) {
- datalen = strlen(inhex) / 2;
- data = hex2bin(inhex, datalen);
- } else {
- int datasize = 4096;
- datalen = 0;
- data = snewn(datasize, unsigned char);
- while (1) {
- int ret = fread(data + datalen, 1, datasize - datalen, stdin);
- if (ret < 0) {
- fprintf(stderr, "obfusc: read: %s\n", strerror(errno));
- return 1;
- } else if (ret == 0) {
- break;
- } else {
- datalen += ret;
- if (datasize - datalen < 4096) {
- datasize = datalen * 5 / 4 + 4096;
- data = sresize(data, datasize, unsigned char);
- }
- }
- }
- }
-
- obfuscate_bitmap(data, datalen * 8, mode == DECODE);
-
- if (outputmode == BINARY) {
- int ret = fwrite(data, 1, datalen, stdout);
- if (ret < 0) {
- fprintf(stderr, "obfusc: write: %s\n", strerror(errno));
- return 1;
- }
- } else {
- int i;
- for (i = 0; i < datalen; i++)
- printf("%02x", data[i]);
- printf("\n");
- }
-
- return 0;
-}