diff options
| -rw-r--r-- | utils/checkisomd5.c | 186 | ||||
| -rw-r--r-- | utils/implantisomd5.c | 187 | ||||
| -rw-r--r-- | utils/md5.c | 256 | ||||
| -rw-r--r-- | utils/md5.h | 25 |
4 files changed, 0 insertions, 654 deletions
diff --git a/utils/checkisomd5.c b/utils/checkisomd5.c deleted file mode 100644 index 28d6b8eaf..000000000 --- a/utils/checkisomd5.c +++ /dev/null @@ -1,186 +0,0 @@ -/* simple program to check implanted md5sum in an iso 9660 image */ -/* Copyright 2001 Red Hat, Inc. */ -/* Michael Fulbright msf@redhat.com */ - -#include <stdio.h> -#include <stdlib.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <fcntl.h> - -#include "md5.h" - - -/* number of sectors to ignore at end of iso when computing sum */ -#define SKIPSECTORS 150 - -#define APPDATA_OFFSET 883 -#define SIZE_OFFSET 84 - -#define MAX(x, y) ((x > y) ? x : y) -#define MIN(x, y) ((x < y) ? x : y) - - - -/* finds primary volume descriptor and returns info from it */ -/* mediasum must be a preallocated buffer at least 33 bytes long */ -int parsepvd(int isofd, char *mediasum, long long *isosize) { - unsigned char buf[2048]; - long long offset; - unsigned char *p; - - if (lseek(isofd, (off_t)(16L * 2048L), SEEK_SET) == -1) - return ((long long)-1); - - offset = (16L * 2048L); - for (;1;) { - read(isofd, buf, 2048); - if (buf[0] == 1) - /* found primary volume descriptor */ - break; - else if (buf[0] == 255) - /* hit end and didn't find primary volume descriptor */ - return ((long long)-1); - offset += 2048L; - } - - /* read out md5sum */ - memcpy(mediasum, buf + APPDATA_OFFSET + 13, 32); - mediasum[32] = '\0'; - - for (p=mediasum; *p; p++) - if (*p != ' ') - break; - - /* if the md5sum was all spaces, we didn't find md5sum */ - if (!*p) - return -1; - - /* get isosize */ - *isosize = (buf[SIZE_OFFSET]*0x1000000+buf[SIZE_OFFSET+1]*0x10000 + - buf[SIZE_OFFSET+2]*0x100 + buf[SIZE_OFFSET+3]) * 2048LL; - - return offset; -} - -/* returns -1 if no checksum encoded in media, 0 if no match, 1 if match */ -/* mediasum is the sum encoded in media, computedsum is one we compute */ -/* both strings must be pre-allocated at least 33 chars in length */ -int checkmd5sum(int isofd, char *mediasum, char *computedsum) { - int nread; - int i; - int appdata_start_offset, appdata_end_offset; - int nattempt; - unsigned int bufsize = 32768; - unsigned char md5sum[16]; - unsigned int len; - unsigned char *buf; - unsigned long tally_inc, tally; - long long isosize, offset, pvd_offset, apoff; - MD5_CTX md5ctx; - - if ((pvd_offset = parsepvd(isofd, mediasum, &isosize)) < 0) - return -1; - - /* printf("Mediasum = %s\n",mediasum); */ - - /* rewind, compute md5sum */ - lseek(isofd, 0L, SEEK_SET); - - MD5_Init(&md5ctx); - - offset = 0; - apoff = pvd_offset + APPDATA_OFFSET; - - buf = malloc(bufsize * sizeof(unsigned char)); - tally_inc = 50*1000*1000; - tally = 0; - while (offset < isosize - SKIPSECTORS*2048) { - nattempt = MIN(isosize - SKIPSECTORS*2048 - offset, bufsize); - - /* printf("%lld %lld %lld %d\n", offset, isosize, isosize-SKIPSECTORS*2048, nattempt); */ - - nread = read(isofd, buf, nattempt); - if (nread <= 0) - break; - - /* overwrite md5sum we implanted with original data */ - if (offset < apoff && offset+nread >= apoff) { - appdata_start_offset = apoff - offset; - appdata_end_offset = MIN(appdata_start_offset+MIN(nread, 512), - offset + nread - apoff); - len = appdata_end_offset - appdata_start_offset; - memset(buf+appdata_start_offset, ' ', len); - } else if (offset >= apoff && offset+nread < apoff + 512) { - appdata_start_offset = 0; - appdata_end_offset = nread; - len = appdata_end_offset - appdata_start_offset; - memset(buf+appdata_start_offset, ' ', len); - } else if (offset < apoff + 512 && offset+nread >= apoff + 512) { - appdata_start_offset = 0; - appdata_end_offset = apoff + 512 - offset; - len = appdata_end_offset - appdata_start_offset; - memset(buf+appdata_start_offset, ' ', len); - } - - MD5_Update(&md5ctx, buf, nread); - offset = offset + nread; - if (offset >= tally) { - printf("Read %5d MB\n", tally/1000/1000); - tally += tally_inc; - } - } - - sleep(1); - - free(buf); - - MD5_Final(md5sum, &md5ctx); - - *computedsum = '\0'; - for (i=0; i<16; i++) { - char tmpstr[4]; - snprintf (tmpstr, 4, "%02x", md5sum[i]); - strcat(computedsum, tmpstr); - } - - /* printf("mediasum, computedsum = %s %s\n", mediasum, computedsum); */ - - if (strcmp(mediasum, computedsum)) - return 0; - else - return 1; - } - - -int main(int argc, char **argv) { - int isofd; - int rc; - int retval; - unsigned char mediasum[33], computedsum[33]; - - if (argc < 2) { - printf("Usage: checkisomd5 <isofilename>\n\n"); - exit(1); - } - - isofd = open(argv[1], O_RDONLY); - - if (isofd < 0) { - fprintf(stderr, "Error - Unable to open file %s\n\n", argv[1]); - exit(1); - } - - rc = checkmd5sum(isofd, mediasum, computedsum); - printf("%s\n%s\n", mediasum, computedsum); - if ( rc == 0) - printf("Md5sums differ.\n"); - else if (rc > 0) - printf("Md5sums match.\n"); - else - printf("No checksum information in iso, check skipped.\n"); - - close(isofd); - exit(0); -} - diff --git a/utils/implantisomd5.c b/utils/implantisomd5.c deleted file mode 100644 index 173eddeae..000000000 --- a/utils/implantisomd5.c +++ /dev/null @@ -1,187 +0,0 @@ -/* simple program to insert a md5sum into application data area of */ -/* an iso9660 image */ -/* Copyright 2001 Red Hat, Inc. */ -/* Michael Fulbright msf@redhat.com */ - -#include <stdio.h> -#include <stdlib.h> -#include <sys/types.h> -#include <sys/stat.h> -#include <fcntl.h> - -#include "md5.h" - -#define APPDATA_OFFSET 883 -#define SIZE_OFFSET 84 - -/* number of sectors to ignore at end of iso when computing sum */ -#define SKIPSECTORS 150 - -#define MAX(x, y) ((x > y) ? x : y) -#define MIN(x, y) ((x < y) ? x : y) - -/* finds primary volume descriptor and returns info from it */ -/* mediasum must be a preallocated buffer at least 33 bytes long */ -int parsepvd(int isofd, char *mediasum, long long *isosize) { - unsigned char buf[2048]; - long long offset; - unsigned char *p; - - if (lseek(isofd, (off_t)(16L * 2048L), SEEK_SET) == -1) - return ((long long)-1); - - offset = (16L * 2048L); - for (;1;) { - read(isofd, buf, 2048); - if (buf[0] == 1) - /* found primary volume descriptor */ - break; - else if (buf[0] == 255) - /* hit end and didn't find primary volume descriptor */ - return ((long long)-1); - offset += 2048L; - } - - /* read out md5sum */ -#if 0 - memcpy(mediasum, buf + APPDATA_OFFSET + 13, 32); - mediasum[32] = '\0'; - - for (p=mediasum; *p; p++) - if (*p != ' ') - break; - - /* if the md5sum was all spaces, we didn't find md5sum */ - if (!*p) - return -1; -#endif - - /* get isosize */ - *isosize = (buf[SIZE_OFFSET]*0x1000000+buf[SIZE_OFFSET+1]*0x10000 + - buf[SIZE_OFFSET+2]*0x100 + buf[SIZE_OFFSET+3]) * 2048LL; - - return offset; -} - - - -int main(int argc, char **argv) { - int isofd; - int nread; - int i; - int dirty; - int pvd_offset; - int forceit; - long long isosize; - unsigned char md5sum[16]; - unsigned int total; - unsigned char *fname; - unsigned char buf[2048]; - unsigned char orig_appdata[512]; - unsigned char new_appdata[512]; - unsigned char mediasum[33], computedsum[33]; - unsigned long tally_inc, tally; - char md5str[40]; - MD5_CTX md5ctx; - - if (argc < 2) { - printf("Usage: implantisomd5 [-f] <isofilename>\n\n"); - exit(1); - } - - if (!strncmp(argv[1] , "-f", 3)) { - forceit = 1; - fname = argv[2]; - } else { - forceit = 0; - fname = argv[1]; - } - - isofd = open(fname, O_RDWR); - - if (isofd < 0) { - fprintf(stderr, "Error - Unable to open file %s\n\n", fname); - exit(1); - } - - pvd_offset = parsepvd(isofd, mediasum, &isosize); - if (pvd_offset < 0) { - fprintf(stderr, "Could not find primary volumne!\n\n"); - exit(1); - } - - lseek(isofd, pvd_offset + APPDATA_OFFSET, SEEK_SET); - nread = read(isofd, orig_appdata, 512); - - if (!forceit) { - dirty = 0; - for (i=0; i < 512; i++) - if (orig_appdata[i] != ' ') - dirty = 1; - - if (dirty) { - fprintf(stderr, "Application data has been used - not implanting md5sum!\n"); - exit(1); - } - } - - - lseek(isofd, 0L, SEEK_SET); - - MD5_Init(&md5ctx); - - total = 0; - /* read up to 15 sectors from end, due to problems reading last few */ - /* sectors on burned CDs */ - tally_inc = 64*1024*1024; - tally = 0; - while (total < isosize - SKIPSECTORS*2048) { - nread = read(isofd, buf, 2048); - if (nread <= 0) - break; - - MD5_Update(&md5ctx, buf, nread); - total = total + nread; - - if (total >= tally) { - printf("Read %5d MB\n", tally/1024/1024); - tally += tally_inc; - } - } - - MD5_Final(md5sum, &md5ctx); - - *md5str = '\0'; - for (i=0; i<16; i++) { - char tmpstr[4]; - snprintf (tmpstr, 4, "%02x", md5sum[i]); - strcat(md5str, tmpstr); - } - - printf("Inserting md5sum into iso image...\n"); - printf("md5 = %s\n", md5str); - /* memcpy(new_appdata, orig_appdata, 512); */ - memset(new_appdata, ' ', 512); - memcpy(new_appdata, "ISO MD5SUM = ", 13); - memcpy(new_appdata+13, md5str, 33); - memcpy(new_appdata+47, "THIS IS NOT THE SAME AS RUNNING MD5SUM ON THIS ISO!!", 51); - - i = lseek(isofd, pvd_offset + APPDATA_OFFSET, SEEK_SET); - if (i<0) { - printf("seek failed\n"); - perror(""); - exit(1); - } - - i = write(isofd, new_appdata, 512); - if (i<0) { - printf("write failed %d\n", i); - perror(""); - exit(1); - } - - close(isofd); - - printf("Done!\n"); - exit(0); -} diff --git a/utils/md5.c b/utils/md5.c deleted file mode 100644 index fe032ebba..000000000 --- a/utils/md5.c +++ /dev/null @@ -1,256 +0,0 @@ -/* - * $Id$ - * - * This code implements the MD5 message-digest algorithm. - * The algorithm is due to Ron Rivest. This code was - * written by Colin Plumb in 1993, no copyright is claimed. - * This code is in the public domain; do with it what you wish. - * - * Equivalent code is available from RSA Data Security, Inc. - * This code has been tested against that, and is equivalent, - * except that you don't need to include two pages of legalese - * with every copy. - * - * To compute the message digest of a chunk of bytes, declare an - * MD5Context structure, pass it to MD5Init, call MD5Update as - * needed on buffers full of bytes, and then call MD5Final, which - * will fill a supplied 16-byte array with the digest. - * - */ - -#include <string.h> -#include "md5.h" - -#ifndef HIGHFIRST -#define byteReverse(buf, len) /* Nothing */ -#else -static void byteReverse(unsigned char *buf, unsigned longs); - -#ifndef ASM_MD5 -/* - * Note: this code is harmless on little-endian machines. - */ -static void byteReverse(unsigned char *buf, unsigned longs) -{ - uint32 t; - do { - t = (uint32) ((unsigned) buf[3] << 8 | buf[2]) << 16 | - ((unsigned) buf[1] << 8 | buf[0]); - *(uint32 *) buf = t; - buf += 4; - } while (--longs); -} -#endif -#endif - -/* - * Start MD5 accumulation. Set bit count to 0 and buffer to mysterious - * initialization constants. - */ -void MD5_Init(struct MD5Context *ctx) -{ - ctx->buf[0] = 0x67452301U; - ctx->buf[1] = 0xefcdab89U; - ctx->buf[2] = 0x98badcfeU; - ctx->buf[3] = 0x10325476U; - - ctx->bits[0] = 0; - ctx->bits[1] = 0; -} - -/* - * Update context to reflect the concatenation of another buffer full - * of bytes. - */ -void MD5_Update(struct MD5Context *ctx, unsigned const char *buf, unsigned len) -{ - uint32 t; - - /* Update bitcount */ - - t = ctx->bits[0]; - if ((ctx->bits[0] = t + ((uint32) len << 3)) < t) - ctx->bits[1]++; /* Carry from low to high */ - ctx->bits[1] += len >> 29; - - t = (t >> 3) & 0x3f; /* Bytes already in shsInfo->data */ - - /* Handle any leading odd-sized chunks */ - - if (t) { - unsigned char *p = (unsigned char *) ctx->in + t; - - t = 64 - t; - if (len < t) { - memcpy(p, buf, len); - return; - } - memcpy(p, buf, t); - byteReverse(ctx->in, 16); - MD5_Transform(ctx->buf, (uint32 *) ctx->in); - buf += t; - len -= t; - } - /* Process data in 64-byte chunks */ - - while (len >= 64) { - memcpy(ctx->in, buf, 64); - byteReverse(ctx->in, 16); - MD5_Transform(ctx->buf, (uint32 *) ctx->in); - buf += 64; - len -= 64; - } - - /* Handle any remaining bytes of data. */ - - memcpy(ctx->in, buf, len); -} - -/* - * Final wrapup - pad to 64-byte boundary with the bit pattern - * 1 0* (64-bit count of bits processed, MSB-first) - */ -void MD5_Final(unsigned char digest[16], struct MD5Context *ctx) -{ - unsigned count; - unsigned char *p; - - /* Compute number of bytes mod 64 */ - count = (ctx->bits[0] >> 3) & 0x3F; - - /* Set the first char of padding to 0x80. This is safe since there is - always at least one byte free */ - p = ctx->in + count; - *p++ = 0x80; - - /* Bytes of padding needed to make 64 bytes */ - count = 64 - 1 - count; - - /* Pad out to 56 mod 64 */ - if (count < 8) { - /* Two lots of padding: Pad the first block to 64 bytes */ - memset(p, 0, count); - byteReverse(ctx->in, 16); - MD5_Transform(ctx->buf, (uint32 *) ctx->in); - - /* Now fill the next block with 56 bytes */ - memset(ctx->in, 0, 56); - } else { - /* Pad block to 56 bytes */ - memset(p, 0, count - 8); - } - byteReverse(ctx->in, 14); - - /* Append length in bits and transform */ - ((uint32 *) ctx->in)[14] = ctx->bits[0]; - ((uint32 *) ctx->in)[15] = ctx->bits[1]; - - MD5_Transform(ctx->buf, (uint32 *) ctx->in); - byteReverse((unsigned char *) ctx->buf, 4); - memcpy(digest, ctx->buf, 16); - memset(ctx, 0, sizeof(ctx)); /* In case it's sensitive */ -} - -#ifndef ASM_MD5 - -/* The four core functions - F1 is optimized somewhat */ - -/* #define F1(x, y, z) (x & y | ~x & z) */ -#define F1(x, y, z) (z ^ (x & (y ^ z))) -#define F2(x, y, z) F1(z, x, y) -#define F3(x, y, z) (x ^ y ^ z) -#define F4(x, y, z) (y ^ (x | ~z)) - -/* This is the central step in the MD5 algorithm. */ -#define MD5STEP(f, w, x, y, z, data, s) \ - ( w += f(x, y, z) + data, w = w<<s | w>>(32-s), w += x ) - -/* - * The core of the MD5 algorithm, this alters an existing MD5 hash to - * reflect the addition of 16 longwords of new data. MD5Update blocks - * the data and converts bytes into longwords for this routine. - */ -void MD5_Transform(uint32 buf[4], uint32 const in[16]) -{ - register uint32 a, b, c, d; - - a = buf[0]; - b = buf[1]; - c = buf[2]; - d = buf[3]; - - MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478U, 7); - MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756U, 12); - MD5STEP(F1, c, d, a, b, in[2] + 0x242070dbU, 17); - MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceeeU, 22); - MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0fafU, 7); - MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62aU, 12); - MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613U, 17); - MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501U, 22); - MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8U, 7); - MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7afU, 12); - MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1U, 17); - MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7beU, 22); - MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122U, 7); - MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193U, 12); - MD5STEP(F1, c, d, a, b, in[14] + 0xa679438eU, 17); - MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821U, 22); - - MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562U, 5); - MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340U, 9); - MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51U, 14); - MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aaU, 20); - MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105dU, 5); - MD5STEP(F2, d, a, b, c, in[10] + 0x02441453U, 9); - MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681U, 14); - MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8U, 20); - MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6U, 5); - MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6U, 9); - MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87U, 14); - MD5STEP(F2, b, c, d, a, in[8] + 0x455a14edU, 20); - MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905U, 5); - MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8U, 9); - MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9U, 14); - MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8aU, 20); - - MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942U, 4); - MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681U, 11); - MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122U, 16); - MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380cU, 23); - MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44U, 4); - MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9U, 11); - MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60U, 16); - MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70U, 23); - MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6U, 4); - MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127faU, 11); - MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085U, 16); - MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05U, 23); - MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039U, 4); - MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5U, 11); - MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8U, 16); - MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665U, 23); - - MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244U, 6); - MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97U, 10); - MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7U, 15); - MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039U, 21); - MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3U, 6); - MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92U, 10); - MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47dU, 15); - MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1U, 21); - MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4fU, 6); - MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0U, 10); - MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314U, 15); - MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1U, 21); - MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82U, 6); - MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235U, 10); - MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bbU, 15); - MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391U, 21); - - buf[0] += a; - buf[1] += b; - buf[2] += c; - buf[3] += d; -} - -#endif diff --git a/utils/md5.h b/utils/md5.h deleted file mode 100644 index bacfb534a..000000000 --- a/utils/md5.h +++ /dev/null @@ -1,25 +0,0 @@ - -#ifndef MD5_H -#define MD5_H - -#include <sys/types.h> - -typedef u_int32_t uint32; - -struct MD5Context { - uint32 buf[4]; - uint32 bits[2]; - unsigned char in[64]; -}; - -void MD5_Init(struct MD5Context *); -void MD5_Update(struct MD5Context *, unsigned const char *, unsigned); -void MD5_Final(unsigned char digest[16], struct MD5Context *); - -/* - * This is needed to make RSAREF happy on some MS-DOS compilers. - */ - -typedef struct MD5Context MD5_CTX; - -#endif /* MD5_H */ |