diff options
| -rw-r--r-- | package/utils/oseama/src/Makefile | 2 | ||||
| -rw-r--r-- | package/utils/oseama/src/md5.c | 296 | ||||
| -rw-r--r-- | package/utils/oseama/src/md5.h | 45 | ||||
| -rw-r--r-- | package/utils/oseama/src/oseama.c | 185 |
4 files changed, 527 insertions, 1 deletions
diff --git a/package/utils/oseama/src/Makefile b/package/utils/oseama/src/Makefile index be2e17d3ad..ca35e6ee99 100644 --- a/package/utils/oseama/src/Makefile +++ b/package/utils/oseama/src/Makefile @@ -1,7 +1,7 @@ all: oseama oseama: - $(CC) $(CFLAGS) -o $@ oseama.c -Wall + $(CC) $(CFLAGS) -Wall oseama.c md5.c -o $@ $^ clean: rm -f oseama diff --git a/package/utils/oseama/src/md5.c b/package/utils/oseama/src/md5.c new file mode 100644 index 0000000000..52d96accd3 --- /dev/null +++ b/package/utils/oseama/src/md5.c @@ -0,0 +1,296 @@ +/* + * This is an OpenSSL-compatible implementation of the RSA Data Security, Inc. + * MD5 Message-Digest Algorithm (RFC 1321). + * + * Homepage: + * http://openwall.info/wiki/people/solar/software/public-domain-source-code/md5 + * + * Author: + * Alexander Peslyak, better known as Solar Designer <solar at openwall.com> + * + * This software was written by Alexander Peslyak in 2001. No copyright is + * claimed, and the software is hereby placed in the public domain. + * In case this attempt to disclaim copyright and place the software in the + * public domain is deemed null and void, then the software is + * Copyright (c) 2001 Alexander Peslyak and it is hereby released to the + * general public under the following terms: + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted. + * + * There's ABSOLUTELY NO WARRANTY, express or implied. + * + * (This is a heavily cut-down "BSD license".) + * + * This differs from Colin Plumb's older public domain implementation in that + * no exactly 32-bit integer data type is required (any 32-bit or wider + * unsigned integer data type will do), there's no compile-time endianness + * configuration, and the function prototypes match OpenSSL's. No code from + * Colin Plumb's implementation has been reused; this comment merely compares + * the properties of the two independent implementations. + * + * The primary goals of this implementation are portability and ease of use. + * It is meant to be fast, but not as fast as possible. Some known + * optimizations are not included to reduce source code size and avoid + * compile-time configuration. + */ + +#ifndef HAVE_OPENSSL + +#include <string.h> + +#include "md5.h" + +/* + * The basic MD5 functions. + * + * F and G are optimized compared to their RFC 1321 definitions for + * architectures that lack an AND-NOT instruction, just like in Colin Plumb's + * implementation. + */ +#define F(x, y, z) ((z) ^ ((x) & ((y) ^ (z)))) +#define G(x, y, z) ((y) ^ ((z) & ((x) ^ (y)))) +#define H(x, y, z) (((x) ^ (y)) ^ (z)) +#define H2(x, y, z) ((x) ^ ((y) ^ (z))) +#define I(x, y, z) ((y) ^ ((x) | ~(z))) + +/* + * The MD5 transformation for all four rounds. + */ +#define STEP(f, a, b, c, d, x, t, s) \ + (a) += f((b), (c), (d)) + (x) + (t); \ + (a) = (((a) << (s)) | (((a) & 0xffffffff) >> (32 - (s)))); \ + (a) += (b); + +/* + * SET reads 4 input bytes in little-endian byte order and stores them + * in a properly aligned word in host byte order. + * + * The check for little-endian architectures that tolerate unaligned + * memory accesses is just an optimization. Nothing will break if it + * doesn't work. + */ +#if defined(__i386__) || defined(__x86_64__) || defined(__vax__) +#define SET(n) \ + (*(MD5_u32plus *)&ptr[(n) * 4]) +#define GET(n) \ + SET(n) +#else +#define SET(n) \ + (ctx->block[(n)] = \ + (MD5_u32plus)ptr[(n) * 4] | \ + ((MD5_u32plus)ptr[(n) * 4 + 1] << 8) | \ + ((MD5_u32plus)ptr[(n) * 4 + 2] << 16) | \ + ((MD5_u32plus)ptr[(n) * 4 + 3] << 24)) +#define GET(n) \ + (ctx->block[(n)]) +#endif + +/* + * This processes one or more 64-byte data blocks, but does NOT update + * the bit counters. There are no alignment requirements. + */ +static const void *body(MD5_CTX *ctx, const void *data, unsigned long size) +{ + const unsigned char *ptr; + MD5_u32plus a, b, c, d; + MD5_u32plus saved_a, saved_b, saved_c, saved_d; + + ptr = (const unsigned char *)data; + + a = ctx->a; + b = ctx->b; + c = ctx->c; + d = ctx->d; + + do { + saved_a = a; + saved_b = b; + saved_c = c; + saved_d = d; + +/* Round 1 */ + STEP(F, a, b, c, d, SET(0), 0xd76aa478, 7) + STEP(F, d, a, b, c, SET(1), 0xe8c7b756, 12) + STEP(F, c, d, a, b, SET(2), 0x242070db, 17) + STEP(F, b, c, d, a, SET(3), 0xc1bdceee, 22) + STEP(F, a, b, c, d, SET(4), 0xf57c0faf, 7) + STEP(F, d, a, b, c, SET(5), 0x4787c62a, 12) + STEP(F, c, d, a, b, SET(6), 0xa8304613, 17) + STEP(F, b, c, d, a, SET(7), 0xfd469501, 22) + STEP(F, a, b, c, d, SET(8), 0x698098d8, 7) + STEP(F, d, a, b, c, SET(9), 0x8b44f7af, 12) + STEP(F, c, d, a, b, SET(10), 0xffff5bb1, 17) + STEP(F, b, c, d, a, SET(11), 0x895cd7be, 22) + STEP(F, a, b, c, d, SET(12), 0x6b901122, 7) + STEP(F, d, a, b, c, SET(13), 0xfd987193, 12) + STEP(F, c, d, a, b, SET(14), 0xa679438e, 17) + STEP(F, b, c, d, a, SET(15), 0x49b40821, 22) + +/* Round 2 */ + STEP(G, a, b, c, d, GET(1), 0xf61e2562, 5) + STEP(G, d, a, b, c, GET(6), 0xc040b340, 9) + STEP(G, c, d, a, b, GET(11), 0x265e5a51, 14) + STEP(G, b, c, d, a, GET(0), 0xe9b6c7aa, 20) + STEP(G, a, b, c, d, GET(5), 0xd62f105d, 5) + STEP(G, d, a, b, c, GET(10), 0x02441453, 9) + STEP(G, c, d, a, b, GET(15), 0xd8a1e681, 14) + STEP(G, b, c, d, a, GET(4), 0xe7d3fbc8, 20) + STEP(G, a, b, c, d, GET(9), 0x21e1cde6, 5) + STEP(G, d, a, b, c, GET(14), 0xc33707d6, 9) + STEP(G, c, d, a, b, GET(3), 0xf4d50d87, 14) + STEP(G, b, c, d, a, GET(8), 0x455a14ed, 20) + STEP(G, a, b, c, d, GET(13), 0xa9e3e905, 5) + STEP(G, d, a, b, c, GET(2), 0xfcefa3f8, 9) + STEP(G, c, d, a, b, GET(7), 0x676f02d9, 14) + STEP(G, b, c, d, a, GET(12), 0x8d2a4c8a, 20) + +/* Round 3 */ + STEP(H, a, b, c, d, GET(5), 0xfffa3942, 4) + STEP(H2, d, a, b, c, GET(8), 0x8771f681, 11) + STEP(H, c, d, a, b, GET(11), 0x6d9d6122, 16) + STEP(H2, b, c, d, a, GET(14), 0xfde5380c, 23) + STEP(H, a, b, c, d, GET(1), 0xa4beea44, 4) + STEP(H2, d, a, b, c, GET(4), 0x4bdecfa9, 11) + STEP(H, c, d, a, b, GET(7), 0xf6bb4b60, 16) + STEP(H2, b, c, d, a, GET(10), 0xbebfbc70, 23) + STEP(H, a, b, c, d, GET(13), 0x289b7ec6, 4) + STEP(H2, d, a, b, c, GET(0), 0xeaa127fa, 11) + STEP(H, c, d, a, b, GET(3), 0xd4ef3085, 16) + STEP(H2, b, c, d, a, GET(6), 0x04881d05, 23) + STEP(H, a, b, c, d, GET(9), 0xd9d4d039, 4) + STEP(H2, d, a, b, c, GET(12), 0xe6db99e5, 11) + STEP(H, c, d, a, b, GET(15), 0x1fa27cf8, 16) + STEP(H2, b, c, d, a, GET(2), 0xc4ac5665, 23) + +/* Round 4 */ + STEP(I, a, b, c, d, GET(0), 0xf4292244, 6) + STEP(I, d, a, b, c, GET(7), 0x432aff97, 10) + STEP(I, c, d, a, b, GET(14), 0xab9423a7, 15) + STEP(I, b, c, d, a, GET(5), 0xfc93a039, 21) + STEP(I, a, b, c, d, GET(12), 0x655b59c3, 6) + STEP(I, d, a, b, c, GET(3), 0x8f0ccc92, 10) + STEP(I, c, d, a, b, GET(10), 0xffeff47d, 15) + STEP(I, b, c, d, a, GET(1), 0x85845dd1, 21) + STEP(I, a, b, c, d, GET(8), 0x6fa87e4f, 6) + STEP(I, d, a, b, c, GET(15), 0xfe2ce6e0, 10) + STEP(I, c, d, a, b, GET(6), 0xa3014314, 15) + STEP(I, b, c, d, a, GET(13), 0x4e0811a1, 21) + STEP(I, a, b, c, d, GET(4), 0xf7537e82, 6) + STEP(I, d, a, b, c, GET(11), 0xbd3af235, 10) + STEP(I, c, d, a, b, GET(2), 0x2ad7d2bb, 15) + STEP(I, b, c, d, a, GET(9), 0xeb86d391, 21) + + a += saved_a; + b += saved_b; + c += saved_c; + d += saved_d; + + ptr += 64; + } while (size -= 64); + + ctx->a = a; + ctx->b = b; + ctx->c = c; + ctx->d = d; + + return ptr; +} + +void MD5_Init(MD5_CTX *ctx) +{ + ctx->a = 0x67452301; + ctx->b = 0xefcdab89; + ctx->c = 0x98badcfe; + ctx->d = 0x10325476; + + ctx->lo = 0; + ctx->hi = 0; +} + +void MD5_Update(MD5_CTX *ctx, const void *data, unsigned long size) +{ + MD5_u32plus saved_lo; + unsigned long used, available; + + saved_lo = ctx->lo; + if ((ctx->lo = (saved_lo + size) & 0x1fffffff) < saved_lo) + ctx->hi++; + ctx->hi += size >> 29; + + used = saved_lo & 0x3f; + + if (used) { + available = 64 - used; + + if (size < available) { + memcpy(&ctx->buffer[used], data, size); + return; + } + + memcpy(&ctx->buffer[used], data, available); + data = (const unsigned char *)data + available; + size -= available; + body(ctx, ctx->buffer, 64); + } + + if (size >= 64) { + data = body(ctx, data, size & ~(unsigned long)0x3f); + size &= 0x3f; + } + + memcpy(ctx->buffer, data, size); +} + +void MD5_Final(unsigned char *result, MD5_CTX *ctx) +{ + unsigned long used, available; + + used = ctx->lo & 0x3f; + + ctx->buffer[used++] = 0x80; + + available = 64 - used; + + if (available < 8) { + memset(&ctx->buffer[used], 0, available); + body(ctx, ctx->buffer, 64); + used = 0; + available = 64; + } + + memset(&ctx->buffer[used], 0, available - 8); + + ctx->lo <<= 3; + ctx->buffer[56] = ctx->lo; + ctx->buffer[57] = ctx->lo >> 8; + ctx->buffer[58] = ctx->lo >> 16; + ctx->buffer[59] = ctx->lo >> 24; + ctx->buffer[60] = ctx->hi; + ctx->buffer[61] = ctx->hi >> 8; + ctx->buffer[62] = ctx->hi >> 16; + ctx->buffer[63] = ctx->hi >> 24; + + body(ctx, ctx->buffer, 64); + + result[0] = ctx->a; + result[1] = ctx->a >> 8; + result[2] = ctx->a >> 16; + result[3] = ctx->a >> 24; + result[4] = ctx->b; + result[5] = ctx->b >> 8; + result[6] = ctx->b >> 16; + result[7] = ctx->b >> 24; + result[8] = ctx->c; + result[9] = ctx->c >> 8; + result[10] = ctx->c >> 16; + result[11] = ctx->c >> 24; + result[12] = ctx->d; + result[13] = ctx->d >> 8; + result[14] = ctx->d >> 16; + result[15] = ctx->d >> 24; + + memset(ctx, 0, sizeof(*ctx)); +} + +#endif diff --git a/package/utils/oseama/src/md5.h b/package/utils/oseama/src/md5.h new file mode 100644 index 0000000000..2da44bf355 --- /dev/null +++ b/package/utils/oseama/src/md5.h @@ -0,0 +1,45 @@ +/* + * This is an OpenSSL-compatible implementation of the RSA Data Security, Inc. + * MD5 Message-Digest Algorithm (RFC 1321). + * + * Homepage: + * http://openwall.info/wiki/people/solar/software/public-domain-source-code/md5 + * + * Author: + * Alexander Peslyak, better known as Solar Designer <solar at openwall.com> + * + * This software was written by Alexander Peslyak in 2001. No copyright is + * claimed, and the software is hereby placed in the public domain. + * In case this attempt to disclaim copyright and place the software in the + * public domain is deemed null and void, then the software is + * Copyright (c) 2001 Alexander Peslyak and it is hereby released to the + * general public under the following terms: + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted. + * + * There's ABSOLUTELY NO WARRANTY, express or implied. + * + * See md5.c for more information. + */ + +#ifdef HAVE_OPENSSL +#include <openssl/md5.h> +#elif !defined(_MD5_H) +#define _MD5_H + +/* Any 32-bit or wider unsigned integer data type will do */ +typedef unsigned int MD5_u32plus; + +typedef struct { + MD5_u32plus lo, hi; + MD5_u32plus a, b, c, d; + unsigned char buffer[64]; + MD5_u32plus block[16]; +} MD5_CTX; + +extern void MD5_Init(MD5_CTX *ctx); +extern void MD5_Update(MD5_CTX *ctx, const void *data, unsigned long size); +extern void MD5_Final(unsigned char *result, MD5_CTX *ctx); + +#endif diff --git a/package/utils/oseama/src/oseama.c b/package/utils/oseama/src/oseama.c index 81a73d5e2b..37a2171574 100644 --- a/package/utils/oseama/src/oseama.c +++ b/package/utils/oseama/src/oseama.c @@ -18,6 +18,8 @@ #include <string.h> #include <unistd.h> +#include "md5.h" + #if !defined(__BYTE_ORDER) #error "Unknown byte order" #endif @@ -215,6 +217,181 @@ out: } /************************************************** + * Create + **************************************************/ + +static ssize_t oseama_entity_append_file(FILE *seama, const char *in_path) { + FILE *in; + size_t bytes; + ssize_t length = 0; + uint8_t buf[128]; + + in = fopen(in_path, "r"); + if (!in) { + fprintf(stderr, "Couldn't open %s\n", in_path); + return -EACCES; + } + + while ((bytes = fread(buf, 1, sizeof(buf), in)) > 0) { + if (fwrite(buf, 1, bytes, seama) != bytes) { + fprintf(stderr, "Couldn't write %zu B to %s\n", bytes, seama_path); + length = -EIO; + break; + } + length += bytes; + } + + fclose(in); + + return length; +} + +static ssize_t oseama_entity_append_zeros(FILE *seama, size_t length) { + uint8_t *buf; + + buf = malloc(length); + if (!buf) + return -ENOMEM; + memset(buf, 0, length); + + if (fwrite(buf, 1, length, seama) != length) { + fprintf(stderr, "Couldn't write %zu B to %s\n", length, seama_path); + return -EIO; + } + + return length; +} + +static ssize_t oseama_entity_align(FILE *seama, size_t curr_offset, size_t alignment) { + if (curr_offset & (alignment - 1)) { + size_t length = alignment - (curr_offset % alignment); + + return oseama_entity_append_zeros(seama, length); + } + + return 0; +} + +static int oseama_entity_write_hdr(FILE *seama, size_t metasize, size_t imagesize) { + struct seama_entity_header hdr = {}; + uint8_t buf[128]; + size_t length = imagesize; + size_t bytes; + MD5_CTX ctx; + + fseek(seama, sizeof(hdr) + metasize, SEEK_SET); + MD5_Init(&ctx); + while ((bytes = fread(buf, 1, oseama_min(sizeof(buf), length), seama)) > 0) { + MD5_Update(&ctx, buf, bytes); + length -= bytes; + } + MD5_Final(hdr.md5, &ctx); + + hdr.magic = cpu_to_be32(SEAMA_MAGIC); + hdr.metasize = cpu_to_be16(metasize); + hdr.imagesize = cpu_to_be32(imagesize); + + fseek(seama, 0, SEEK_SET); + bytes = fwrite(&hdr, 1, sizeof(hdr), seama); + if (bytes != sizeof(hdr)) { + fprintf(stderr, "Couldn't write Seama entity header to %s\n", seama_path); + return -EIO; + } + + return 0; +} + +static int oseama_entity(int argc, char **argv) { + FILE *seama; + ssize_t sbytes; + size_t curr_offset = sizeof(struct seama_entity_header); + size_t metasize = 0, imagesize = 0; + int c; + int err = 0; + + if (argc < 3) { + fprintf(stderr, "No Seama file passed\n"); + err = -EINVAL; + goto out; + } + seama_path = argv[2]; + + seama = fopen(seama_path, "w+"); + if (!seama) { + fprintf(stderr, "Couldn't open %s\n", seama_path); + err = -EACCES; + goto out; + } + fseek(seama, curr_offset, SEEK_SET); + + optind = 3; + while ((c = getopt(argc, argv, "m:f:b:")) != -1) { + switch (c) { + case 'm': + sbytes = fwrite(optarg, 1, strlen(optarg) + 1, seama); + if (sbytes < 0) { + fprintf(stderr, "Failed to write meta %s\n", optarg); + } else { + curr_offset += sbytes; + metasize += sbytes; + } + + sbytes = oseama_entity_align(seama, curr_offset, 4); + if (sbytes < 0) { + fprintf(stderr, "Failed to append zeros\n"); + } else { + curr_offset += sbytes; + metasize += sbytes; + } + + break; + case 'f': + case 'b': + break; + } + } + + optind = 3; + while ((c = getopt(argc, argv, "m:f:b:")) != -1) { + switch (c) { + case 'm': + break; + case 'f': + sbytes = oseama_entity_append_file(seama, optarg); + if (sbytes < 0) { + fprintf(stderr, "Failed to append file %s\n", optarg); + } else { + curr_offset += sbytes; + imagesize += sbytes; + } + break; + case 'b': + sbytes = strtol(optarg, NULL, 0) - curr_offset; + if (sbytes < 0) { + fprintf(stderr, "Current Seama entity length is 0x%zx, can't pad it with zeros to 0x%lx\n", curr_offset, strtol(optarg, NULL, 0)); + } else { + sbytes = oseama_entity_append_zeros(seama, sbytes); + if (sbytes < 0) { + fprintf(stderr, "Failed to append zeros\n"); + } else { + curr_offset += sbytes; + imagesize += sbytes; + } + } + break; + } + if (err) + break; + } + + oseama_entity_write_hdr(seama, metasize, imagesize); + + fclose(seama); +out: + return err; +} + +/************************************************** * Start **************************************************/ @@ -224,12 +401,20 @@ static void usage() { printf("Info about Seama seal (container):\n"); printf("\toseama info <file> [options]\n"); printf("\t-e\t\t\t\tprint info about specified entity only\n"); + printf("\n"); + printf("Create Seama entity:\n"); + printf("\toseama entity <file> [options]\n"); + printf("\t-m meta\t\t\t\tmeta into to put in header\n"); + printf("\t-f file\t\t\t\tappend content from file\n"); + printf("\t-b offset\t\t\tappend zeros till reaching absolute offset\n"); } int main(int argc, char **argv) { if (argc > 1) { if (!strcmp(argv[1], "info")) return oseama_info(argc, argv); + else if (!strcmp(argv[1], "entity")) + return oseama_entity(argc, argv); } usage(); 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