Annotation of elwix/tools/mktplinkfw/mktplinkfw.c, revision 1.2
1.2 ! misho 1: /*
! 2: * Copyright (C) 2009 Gabor Juhos <juhosg@openwrt.org>
! 3: *
! 4: * This tool was based on:
! 5: * TP-Link WR941 V2 firmware checksum fixing tool.
! 6: * Copyright (C) 2008,2009 Wang Jian <lark@linux.net.cn>
! 7: *
! 8: * This program is free software; you can redistribute it and/or modify it
! 9: * under the terms of the GNU General Public License version 2 as published
! 10: * by the Free Software Foundation.
! 11: *
! 12: */
! 13:
! 14: #include <stdio.h>
! 15: #include <stdlib.h>
! 16: #include <stdint.h>
! 17: #include <string.h>
! 18: #include <unistd.h> /* for unlink() */
! 19: #include <libgen.h>
! 20: #include <getopt.h> /* for getopt() */
! 21: #include <stdarg.h>
! 22: #include <errno.h>
! 23: #include <sys/stat.h>
! 24: #include <arpa/inet.h>
! 25:
! 26: #include <openssl/md5.h>
! 27:
! 28: #define HOST_TO_BE32(x) htonl(x)
! 29: #define BE32_TO_HOST(x) ntohl(x)
! 30:
! 31: /*
! 32: * This is linux specific; it completely fails to get the endianness
! 33: * correct when building on FreeBSD.
! 34: */
! 35: #if 0
! 36: #if (__BYTE_ORDER == __BIG_ENDIAN)
! 37: # define HOST_TO_BE32(x) (x)
! 38: # define BE32_TO_HOST(x) (x)
! 39: #else
! 40: # define HOST_TO_BE32(x) bswap_32(x)
! 41: # define BE32_TO_HOST(x) bswap_32(x)
! 42: #endif
! 43: #endif
! 44:
! 45: #define HEADER_VERSION_V1 0x01000000
! 46: #define HWID_TL_MR3020_V1 0x30200001
! 47: #define HWID_TL_MR3220_V1 0x32200001
! 48: #define HWID_TL_MR3420_V1 0x34200001
! 49: #define HWID_TL_WA901ND_V1 0x09010001
! 50: #define HWID_TL_WA901ND_V2 0x09010002
! 51: #define HWID_TL_WR703N_V1 0x07030101
! 52: #define HWID_TL_WR741ND_V1 0x07410001
! 53: #define HWID_TL_WR740N_V1 0x07400001
! 54: #define HWID_TL_WR740N_V3 0x07400300
! 55: #define HWID_TL_WR743ND_V1 0x07430001
! 56: #define HWID_TL_WR841N_V1_5 0x08410002
! 57: #define HWID_TL_WR841ND_V3 0x08410003
! 58: #define HWID_TL_WR841ND_V5 0x08410005
! 59: #define HWID_TL_WR841ND_V7 0x08410007
! 60: #define HWID_TL_WR941ND_V2 0x09410002
! 61: #define HWID_TL_WR941ND_V4 0x09410004
! 62: #define HWID_TL_WR1043ND_V1 0x10430001
! 63:
! 64: #define MD5SUM_LEN 16
! 65:
! 66: struct file_info {
! 67: char *file_name; /* name of the file */
! 68: uint32_t file_size; /* length of the file */
! 69: };
! 70:
! 71: struct fw_header {
! 72: uint32_t version; /* header version */
! 73: char vendor_name[24];
! 74: char fw_version[36];
! 75: uint32_t hw_id; /* hardware id */
! 76: uint32_t hw_rev; /* hardware revision */
! 77: uint32_t unk1;
! 78: uint8_t md5sum1[MD5SUM_LEN];
! 79: uint32_t unk2;
! 80: uint8_t md5sum2[MD5SUM_LEN];
! 81: uint32_t unk3;
! 82: uint32_t kernel_la; /* kernel load address */
! 83: uint32_t kernel_ep; /* kernel entry point */
! 84: uint32_t fw_length; /* total length of the firmware */
! 85: uint32_t kernel_ofs; /* kernel data offset */
! 86: uint32_t kernel_len; /* kernel data length */
! 87: uint32_t rootfs_ofs; /* rootfs data offset */
! 88: uint32_t rootfs_len; /* rootfs data length */
! 89: uint32_t boot_ofs; /* bootloader data offset */
! 90: uint32_t boot_len; /* bootloader data length */
! 91: uint8_t pad[360];
! 92: } __attribute__ ((packed));
! 93:
! 94: struct board_info {
! 95: char *id;
! 96: uint32_t hw_id;
! 97: uint32_t hw_rev;
! 98: uint32_t fw_max_len;
! 99: uint32_t kernel_la;
! 100: uint32_t kernel_ep;
! 101: uint32_t rootfs_ofs;
! 102: };
! 103:
! 104: /*
! 105: * Globals
! 106: */
! 107: static char *ofname;
! 108: static char *progname;
! 109: static char *vendor = "TP-LINK Technologies";
! 110: static char *version = "ver. 1.0";
! 111:
! 112: static char *board_id;
! 113: static struct board_info *board;
! 114: static struct file_info kernel_info;
! 115: static uint32_t kernel_la = 0;
! 116: static uint32_t kernel_ep = 0;
! 117: static struct file_info rootfs_info;
! 118: static uint32_t rootfs_ofs = 0;
! 119: static struct file_info boot_info;
! 120: static int combined;
! 121: static int strip_padding;
! 122:
! 123: static struct file_info inspect_info;
! 124: static int extract = 0;
! 125:
! 126: char md5salt_normal[MD5SUM_LEN] = {
! 127: 0xdc, 0xd7, 0x3a, 0xa5, 0xc3, 0x95, 0x98, 0xfb,
! 128: 0xdd, 0xf9, 0xe7, 0xf4, 0x0e, 0xae, 0x47, 0x38,
! 129: };
! 130:
! 131: char md5salt_boot[MD5SUM_LEN] = {
! 132: 0x8c, 0xef, 0x33, 0x5b, 0xd5, 0xc5, 0xce, 0xfa,
! 133: 0xa7, 0x9c, 0x28, 0xda, 0xb2, 0xe9, 0x0f, 0x42,
! 134: };
! 135:
! 136: static struct board_info boards[] = {
! 137: {
! 138: .id = "TL-MR3020v1",
! 139: .hw_id = HWID_TL_MR3020_V1,
! 140: .hw_rev = 1,
! 141: /*
! 142: * Actual size of firmware is 3.8MB but for now, allow larger
! 143: * sizes until we work out a plan for this unit
! 144: * .fw_max_len = 0x3c0000,
! 145: */
! 146: .fw_max_len = 0x640000,
! 147: .kernel_la = 0x80060000,
! 148: .kernel_ep = 0x80060000,
! 149: .rootfs_ofs = 0x100000,
! 150: }, {
! 151: .id = "TL-MR3220v1",
! 152: .hw_id = HWID_TL_MR3220_V1,
! 153: .hw_rev = 1,
! 154: .fw_max_len = 0x3c0000,
! 155: .kernel_la = 0x80060000,
! 156: .kernel_ep = 0x80060000,
! 157: .rootfs_ofs = 0x140000,
! 158: }, {
! 159: .id = "TL-MR3420v1",
! 160: .hw_id = HWID_TL_MR3420_V1,
! 161: .hw_rev = 1,
! 162: .fw_max_len = 0x3c0000,
! 163: .kernel_la = 0x80060000,
! 164: .kernel_ep = 0x80060000,
! 165: .rootfs_ofs = 0x140000,
! 166: }, {
! 167: .id = "TL-WA901NDv1",
! 168: .hw_id = HWID_TL_WA901ND_V1,
! 169: .hw_rev = 1,
! 170: .fw_max_len = 0x3c0000,
! 171: .kernel_la = 0x80060000,
! 172: .kernel_ep = 0x80060000,
! 173: .rootfs_ofs = 0x140000,
! 174: }, {
! 175: .id = "TL-WA901NDv2",
! 176: .hw_id = HWID_TL_WA901ND_V2,
! 177: .hw_rev = 1,
! 178: .fw_max_len = 0x3c0000,
! 179: .kernel_la = 0x80060000,
! 180: .kernel_ep = 0x80060000,
! 181: .rootfs_ofs = 0x140000,
! 182: }, {
! 183: .id = "TL-WR741NDv1",
! 184: .hw_id = HWID_TL_WR741ND_V1,
! 185: .hw_rev = 1,
! 186: .fw_max_len = 0x3c0000,
! 187: .kernel_la = 0x80060000,
! 188: .kernel_ep = 0x80060000,
! 189: .rootfs_ofs = 0x140000,
! 190: }, {
! 191: .id = "TL-WR740Nv1",
! 192: .hw_id = HWID_TL_WR740N_V1,
! 193: .hw_rev = 1,
! 194: .fw_max_len = 0x3c0000,
! 195: .kernel_la = 0x80060000,
! 196: .kernel_ep = 0x80060000,
! 197: .rootfs_ofs = 0x140000,
! 198: }, {
! 199: .id = "TL-WR740Nv3",
! 200: .hw_id = HWID_TL_WR740N_V3,
! 201: .hw_rev = 1,
! 202: .fw_max_len = 0x3c0000,
! 203: .kernel_la = 0x80060000,
! 204: .kernel_ep = 0x80060000,
! 205: .rootfs_ofs = 0x140000,
! 206: }, {
! 207: .id = "TL-WR743NDv1",
! 208: .hw_id = HWID_TL_WR743ND_V1,
! 209: .hw_rev = 1,
! 210: .fw_max_len = 0x3c0000,
! 211: .kernel_la = 0x80060000,
! 212: .kernel_ep = 0x80060000,
! 213: .rootfs_ofs = 0x140000,
! 214: }, {
! 215: .id = "TL-WR841Nv1.5",
! 216: .hw_id = HWID_TL_WR841N_V1_5,
! 217: .hw_rev = 2,
! 218: .fw_max_len = 0x3c0000,
! 219: .kernel_la = 0x80060000,
! 220: .kernel_ep = 0x80060000,
! 221: .rootfs_ofs = 0x140000,
! 222: }, {
! 223: .id = "TL-WR841NDv3",
! 224: .hw_id = HWID_TL_WR841ND_V3,
! 225: .hw_rev = 3,
! 226: .fw_max_len = 0x3c0000,
! 227: .kernel_la = 0x80060000,
! 228: .kernel_ep = 0x80060000,
! 229: .rootfs_ofs = 0x140000,
! 230: }, {
! 231: .id = "TL-WR841NDv5",
! 232: .hw_id = HWID_TL_WR841ND_V5,
! 233: .hw_rev = 1,
! 234: .fw_max_len = 0x3c0000,
! 235: .kernel_la = 0x80060000,
! 236: .kernel_ep = 0x80060000,
! 237: .rootfs_ofs = 0x140000,
! 238: }, {
! 239: .id = "TL-WR841NDv7",
! 240: .hw_id = HWID_TL_WR841ND_V7,
! 241: .hw_rev = 1,
! 242: .fw_max_len = 0x3c0000,
! 243: .kernel_la = 0x80060000,
! 244: .kernel_ep = 0x80060000,
! 245: .rootfs_ofs = 0x140000,
! 246: }, {
! 247: .id = "TL-WR941NDv2",
! 248: .hw_id = HWID_TL_WR941ND_V2,
! 249: .hw_rev = 2,
! 250: .fw_max_len = 0x3c0000,
! 251: .kernel_la = 0x80060000,
! 252: .kernel_ep = 0x80060000,
! 253: .rootfs_ofs = 0x140000,
! 254: }, {
! 255: .id = "TL-WR941NDv4",
! 256: .hw_id = HWID_TL_WR941ND_V4,
! 257: .hw_rev = 1,
! 258: .fw_max_len = 0x3c0000,
! 259: .kernel_la = 0x80060000,
! 260: .kernel_ep = 0x80060000,
! 261: .rootfs_ofs = 0x140000,
! 262: }, {
! 263: .id = "TL-WR1043NDv1",
! 264: .hw_id = HWID_TL_WR1043ND_V1,
! 265: .hw_rev = 1,
! 266: .fw_max_len = 0x7c0000,
! 267: .kernel_la = 0x80060000,
! 268: .kernel_ep = 0x80060000,
! 269: .rootfs_ofs = 0x140000,
! 270: }, {
! 271: .id = "TL-WR703Nv1",
! 272: .hw_id = HWID_TL_WR703N_V1,
! 273: .hw_rev = 1,
! 274: .fw_max_len = 0x3c0000,
! 275: .kernel_la = 0x80060000,
! 276: .kernel_ep = 0x80060000,
! 277: .rootfs_ofs = 0x100000,
! 278: }, {
! 279: /* terminating entry */
! 280: }
! 281: };
! 282:
! 283: /*
! 284: * Message macros
! 285: */
! 286: #define ERR(fmt, ...) do { \
! 287: fflush(0); \
! 288: fprintf(stderr, "[%s] *** error: " fmt "\n", \
! 289: progname, ## __VA_ARGS__ ); \
! 290: } while (0)
! 291:
! 292: #define ERRS(fmt, ...) do { \
! 293: int save = errno; \
! 294: fflush(0); \
! 295: fprintf(stderr, "[%s] *** error: " fmt " error:%s\n", \
! 296: progname, ## __VA_ARGS__, strerror(save)); \
! 297: } while (0)
! 298:
! 299: #define DBG(fmt, ...) do { \
! 300: fprintf(stderr, "[%s] " fmt "\n", progname, ## __VA_ARGS__ ); \
! 301: } while (0)
! 302:
! 303: static struct board_info *find_board(char *id)
! 304: {
! 305: struct board_info *ret;
! 306: struct board_info *board;
! 307:
! 308: ret = NULL;
! 309: for (board = boards; board->id != NULL; board++){
! 310: if (strcasecmp(id, board->id) == 0) {
! 311: ret = board;
! 312: break;
! 313: }
! 314: };
! 315:
! 316: return ret;
! 317: }
! 318:
! 319: static struct board_info *find_board_by_hwid(uint32_t hw_id)
! 320: {
! 321: struct board_info *board;
! 322:
! 323: for (board = boards; board->id != NULL; board++) {
! 324: if (hw_id == board->hw_id)
! 325: return board;
! 326: };
! 327:
! 328: return NULL;
! 329: }
! 330:
! 331:
! 332: static void usage(int status)
! 333: {
! 334: FILE *stream = (status != EXIT_SUCCESS) ? stderr : stdout;
! 335: struct board_info *board;
! 336:
! 337: fprintf(stream, "Usage: %s [OPTIONS...]\n", progname);
! 338: fprintf(stream,
! 339: "\n"
! 340: "Options:\n"
! 341: " -B <board> create image for the board specified with <board>\n"
! 342: " -c use combined kernel image\n"
! 343: " -E <ep> overwrite kernel entry point with <ep> (hexval prefixed with 0x)\n"
! 344: " -L <la> overwrite kernel load address with <la> (hexval prefixed with 0x)\n"
! 345: " -k <file> read kernel image from the file <file>\n"
! 346: " -r <file> read rootfs image from the file <file>\n"
! 347: " -R <offset> overwrite rootfs offset with <offset> (hexval prefixed with 0x)\n"
! 348: " -o <file> write output to the file <file>\n"
! 349: " -s strip padding from the end of the image\n"
! 350: " -N <vendor> set image vendor to <vendor>\n"
! 351: " -V <version> set image version to <version>\n"
! 352: " -i <file> inspect given firmware file <file>\n"
! 353: " -x extract kernel and rootfs while inspecting (requires -i)\n"
! 354: " -h show this screen\n"
! 355: );
! 356:
! 357: exit(status);
! 358: }
! 359:
! 360: static void get_md5(char *data, int size, uint8_t *md5)
! 361: {
! 362: MD5_CTX ctx;
! 363:
! 364: MD5_Init(&ctx);
! 365: MD5_Update(&ctx, data, size);
! 366: MD5_Final(md5, &ctx);
! 367: }
! 368:
! 369: static int get_file_stat(struct file_info *fdata)
! 370: {
! 371: struct stat st;
! 372: int res;
! 373:
! 374: if (fdata->file_name == NULL)
! 375: return 0;
! 376:
! 377: res = stat(fdata->file_name, &st);
! 378: if (res){
! 379: ERRS("stat failed on %s", fdata->file_name);
! 380: return res;
! 381: }
! 382:
! 383: fdata->file_size = st.st_size;
! 384: return 0;
! 385: }
! 386:
! 387: static int read_to_buf(struct file_info *fdata, char *buf)
! 388: {
! 389: FILE *f;
! 390: int ret = EXIT_FAILURE;
! 391:
! 392: f = fopen(fdata->file_name, "r");
! 393: if (f == NULL) {
! 394: ERRS("could not open \"%s\" for reading", fdata->file_name);
! 395: goto out;
! 396: }
! 397:
! 398: errno = 0;
! 399: fread(buf, fdata->file_size, 1, f);
! 400: if (errno != 0) {
! 401: ERRS("unable to read from file \"%s\"", fdata->file_name);
! 402: goto out_close;
! 403: }
! 404:
! 405: ret = EXIT_SUCCESS;
! 406:
! 407: out_close:
! 408: fclose(f);
! 409: out:
! 410: return ret;
! 411: }
! 412:
! 413: static int check_options(void)
! 414: {
! 415: int ret;
! 416:
! 417: if (inspect_info.file_name) {
! 418: ret = get_file_stat(&inspect_info);
! 419: if (ret)
! 420: return ret;
! 421:
! 422: return 0;
! 423: } else if (extract) {
! 424: ERR("no firmware for inspection specified");
! 425: return -1;
! 426: }
! 427:
! 428: if (board_id == NULL) {
! 429: ERR("no board specified");
! 430: return -1;
! 431: }
! 432:
! 433: board = find_board(board_id);
! 434: if (board == NULL) {
! 435: ERR("unknown/unsupported board id \"%s\"", board_id);
! 436: return -1;
! 437: }
! 438: if (!kernel_la)
! 439: kernel_la = board->kernel_la;
! 440: if (!kernel_ep)
! 441: kernel_ep = board->kernel_ep;
! 442: if (!rootfs_ofs)
! 443: rootfs_ofs = board->rootfs_ofs;
! 444:
! 445: if (kernel_info.file_name == NULL) {
! 446: ERR("no kernel image specified");
! 447: return -1;
! 448: }
! 449:
! 450: ret = get_file_stat(&kernel_info);
! 451: if (ret)
! 452: return ret;
! 453:
! 454: if (combined) {
! 455: if (kernel_info.file_size >
! 456: board->fw_max_len - sizeof(struct fw_header)) {
! 457: ERR("Combined kernel image is too big. Max[%lu] kernel img [%d]",
! 458: board->fw_max_len - sizeof(struct fw_header), kernel_info.file_size);
! 459: return -1;
! 460: }
! 461: } else {
! 462: if (kernel_info.file_size >
! 463: (rootfs_ofs - sizeof(struct fw_header))) {
! 464: ERR("kernel image is too big. Max[%lu] kernel img [%d]",
! 465: rootfs_ofs - sizeof(struct fw_header), kernel_info.file_size);
! 466: return -1;
! 467: }
! 468: if (rootfs_info.file_name == NULL) {
! 469: ERR("no rootfs image specified");
! 470: return -1;
! 471: }
! 472:
! 473: ret = get_file_stat(&rootfs_info);
! 474: if (ret)
! 475: return ret;
! 476:
! 477: if (rootfs_info.file_size >
! 478: (board->fw_max_len - rootfs_ofs)) {
! 479: ERR("rootfs image is too big. Max[%d] fs img [%d]",
! 480: board->fw_max_len - rootfs_ofs, rootfs_info.file_size);
! 481: return -1;
! 482: }
! 483: }
! 484:
! 485: if (ofname == NULL) {
! 486: ERR("no output file specified");
! 487: return -1;
! 488: }
! 489:
! 490: return 0;
! 491: }
! 492:
! 493: static void fill_header(char *buf, int len)
! 494: {
! 495: struct fw_header *hdr = (struct fw_header *)buf;
! 496:
! 497: memset(hdr, 0, sizeof(struct fw_header));
! 498:
! 499: hdr->version = HOST_TO_BE32(HEADER_VERSION_V1);
! 500: strncpy(hdr->vendor_name, vendor, sizeof(hdr->vendor_name));
! 501: strncpy(hdr->fw_version, version, sizeof(hdr->fw_version));
! 502: hdr->hw_id = HOST_TO_BE32(board->hw_id);
! 503: hdr->hw_rev = HOST_TO_BE32(board->hw_rev);
! 504:
! 505: if (boot_info.file_size == 0)
! 506: memcpy(hdr->md5sum1, md5salt_normal, sizeof(hdr->md5sum1));
! 507: else
! 508: memcpy(hdr->md5sum1, md5salt_boot, sizeof(hdr->md5sum1));
! 509:
! 510: hdr->kernel_la = HOST_TO_BE32(kernel_la);
! 511: hdr->kernel_ep = HOST_TO_BE32(kernel_ep);
! 512: hdr->fw_length = HOST_TO_BE32(board->fw_max_len);
! 513: hdr->kernel_ofs = HOST_TO_BE32(sizeof(struct fw_header));
! 514: hdr->kernel_len = HOST_TO_BE32(kernel_info.file_size);
! 515: if (!combined) {
! 516: hdr->rootfs_ofs = HOST_TO_BE32(rootfs_ofs);
! 517: hdr->rootfs_len = HOST_TO_BE32(rootfs_info.file_size);
! 518: }
! 519:
! 520: get_md5(buf, len, hdr->md5sum1);
! 521: }
! 522:
! 523: static int write_fw(char *data, int len)
! 524: {
! 525: FILE *f;
! 526: int ret = EXIT_FAILURE;
! 527:
! 528: f = fopen(ofname, "w");
! 529: if (f == NULL) {
! 530: ERRS("could not open \"%s\" for writing", ofname);
! 531: goto out;
! 532: }
! 533:
! 534: errno = 0;
! 535: fwrite(data, len, 1, f);
! 536: if (errno) {
! 537: ERRS("unable to write output file \"%s\"", ofname);
! 538: goto out_flush;
! 539: }
! 540:
! 541: DBG("firmware file \"%s\" completed", ofname);
! 542:
! 543: ret = EXIT_SUCCESS;
! 544:
! 545: out_flush:
! 546: fflush(f);
! 547: fclose(f);
! 548: if (ret != EXIT_SUCCESS) {
! 549: unlink(ofname);
! 550: }
! 551: out:
! 552: return ret;
! 553: }
! 554:
! 555: static int build_fw(void)
! 556: {
! 557: int buflen;
! 558: char *buf;
! 559: char *p;
! 560: int ret = EXIT_FAILURE;
! 561: int writelen = 0;
! 562:
! 563: buflen = board->fw_max_len;
! 564:
! 565: buf = malloc(buflen);
! 566: if (!buf) {
! 567: ERR("no memory for buffer\n");
! 568: goto out;
! 569: }
! 570:
! 571: memset(buf, 0xff, buflen);
! 572: p = buf + sizeof(struct fw_header);
! 573: ret = read_to_buf(&kernel_info, p);
! 574: if (ret)
! 575: goto out_free_buf;
! 576:
! 577: writelen = kernel_info.file_size;
! 578:
! 579: if (!combined) {
! 580: p = buf + rootfs_ofs;
! 581: ret = read_to_buf(&rootfs_info, p);
! 582: if (ret)
! 583: goto out_free_buf;
! 584:
! 585: writelen = rootfs_ofs + rootfs_info.file_size;
! 586: }
! 587:
! 588: if (!strip_padding)
! 589: writelen = buflen;
! 590:
! 591: fill_header(buf, writelen);
! 592: ret = write_fw(buf, writelen);
! 593: if (ret)
! 594: goto out_free_buf;
! 595:
! 596: ret = EXIT_SUCCESS;
! 597:
! 598: out_free_buf:
! 599: free(buf);
! 600: out:
! 601: return ret;
! 602: }
! 603:
! 604: /* Helper functions to inspect_fw() representing different output formats */
! 605: static inline void inspect_fw_pstr(char *label, char *str)
! 606: {
! 607: printf("%-23s: %s\n", label, str);
! 608: }
! 609:
! 610: static inline void inspect_fw_phex(char *label, uint32_t val)
! 611: {
! 612: printf("%-23s: 0x%08x\n", label, val);
! 613: }
! 614:
! 615: static inline void inspect_fw_phexpost(char *label,
! 616: uint32_t val, char *post)
! 617: {
! 618: printf("%-23s: 0x%08x (%s)\n", label, val, post);
! 619: }
! 620:
! 621: static inline void inspect_fw_phexdef(char *label,
! 622: uint32_t val, uint32_t defval)
! 623: {
! 624: printf("%-23s: 0x%08x ", label, val);
! 625:
! 626: if (val == defval)
! 627: printf("(== OpenWrt default)\n");
! 628: else
! 629: printf("(OpenWrt default: 0x%08x)\n", defval);
! 630: }
! 631:
! 632: static inline void inspect_fw_phexexp(char *label,
! 633: uint32_t val, uint32_t expval)
! 634: {
! 635: printf("%-23s: 0x%08x ", label, val);
! 636:
! 637: if (val == expval)
! 638: printf("(ok)\n");
! 639: else
! 640: printf("(expected: 0x%08x)\n", expval);
! 641: }
! 642:
! 643: static inline void inspect_fw_phexdec(char *label, uint32_t val)
! 644: {
! 645: printf("%-23s: 0x%08x / %8u bytes\n", label, val, val);
! 646: }
! 647:
! 648: static inline void inspect_fw_phexdecdef(char *label,
! 649: uint32_t val, uint32_t defval)
! 650: {
! 651: printf("%-23s: 0x%08x / %8u bytes ", label, val, val);
! 652:
! 653: if (val == defval)
! 654: printf("(== OpenWrt default)\n");
! 655: else
! 656: printf("(OpenWrt default: 0x%08x)\n", defval);
! 657: }
! 658:
! 659: static inline void inspect_fw_pmd5sum(char *label, uint8_t *val, char *text)
! 660: {
! 661: int i;
! 662:
! 663: printf("%-23s:", label);
! 664: for (i=0; i<MD5SUM_LEN; i++)
! 665: printf(" %02x", val[i]);
! 666: printf(" %s\n", text);
! 667: }
! 668:
! 669: static int inspect_fw(void)
! 670: {
! 671: char *buf;
! 672: struct fw_header *hdr;
! 673: uint8_t md5sum[MD5SUM_LEN];
! 674: struct board_info *board;
! 675: int ret = EXIT_FAILURE;
! 676:
! 677: buf = malloc(inspect_info.file_size);
! 678: if (!buf) {
! 679: ERR("no memory for buffer!\n");
! 680: goto out;
! 681: }
! 682:
! 683: ret = read_to_buf(&inspect_info, buf);
! 684: if (ret)
! 685: goto out_free_buf;
! 686: hdr = (struct fw_header *)buf;
! 687:
! 688: inspect_fw_pstr("File name", inspect_info.file_name);
! 689: inspect_fw_phexdec("File size", inspect_info.file_size);
! 690:
! 691: if (BE32_TO_HOST(hdr->version) != HEADER_VERSION_V1) {
! 692: ERR("file does not seem to have V1 header!\n");
! 693: goto out_free_buf;
! 694: }
! 695:
! 696: inspect_fw_phexdec("Version 1 Header size", sizeof(struct fw_header));
! 697:
! 698: if (BE32_TO_HOST(hdr->unk1) != 0)
! 699: inspect_fw_phexdec("Unknown value 1", hdr->unk1);
! 700:
! 701: memcpy(md5sum, hdr->md5sum1, sizeof(md5sum));
! 702: if (BE32_TO_HOST(hdr->boot_len) == 0)
! 703: memcpy(hdr->md5sum1, md5salt_normal, sizeof(md5sum));
! 704: else
! 705: memcpy(hdr->md5sum1, md5salt_boot, sizeof(md5sum));
! 706: get_md5(buf, inspect_info.file_size, hdr->md5sum1);
! 707:
! 708: if (memcmp(md5sum, hdr->md5sum1, sizeof(md5sum))) {
! 709: inspect_fw_pmd5sum("Header MD5Sum1", md5sum, "(*ERROR*)");
! 710: inspect_fw_pmd5sum(" --> expected", hdr->md5sum1, "");
! 711: } else {
! 712: inspect_fw_pmd5sum("Header MD5Sum1", md5sum, "(ok)");
! 713: }
! 714: if (BE32_TO_HOST(hdr->unk2) != 0)
! 715: inspect_fw_phexdec("Unknown value 2", hdr->unk2);
! 716: inspect_fw_pmd5sum("Header MD5Sum2", hdr->md5sum2,
! 717: "(purpose yet unknown, unchecked here)");
! 718: if (BE32_TO_HOST(hdr->unk3) != 0)
! 719: inspect_fw_phexdec("Unknown value 3", hdr->unk3);
! 720:
! 721: printf("\n");
! 722:
! 723: inspect_fw_pstr("Vendor name", hdr->vendor_name);
! 724: inspect_fw_pstr("Firmware version", hdr->fw_version);
! 725: board = find_board_by_hwid(BE32_TO_HOST(hdr->hw_id));
! 726: if (board) {
! 727: inspect_fw_phexpost("Hardware ID",
! 728: BE32_TO_HOST(hdr->hw_id), board->id);
! 729: inspect_fw_phexexp("Hardware Revision",
! 730: BE32_TO_HOST(hdr->hw_rev), board->hw_rev);
! 731: } else {
! 732: inspect_fw_phexpost("Hardware ID",
! 733: BE32_TO_HOST(hdr->hw_id), "unknown");
! 734: inspect_fw_phex("Hardware Revision",
! 735: BE32_TO_HOST(hdr->hw_rev));
! 736: }
! 737:
! 738: printf("\n");
! 739:
! 740: inspect_fw_phexdec("Kernel data offset",
! 741: BE32_TO_HOST(hdr->kernel_ofs));
! 742: inspect_fw_phexdec("Kernel data length",
! 743: BE32_TO_HOST(hdr->kernel_len));
! 744: if (board) {
! 745: inspect_fw_phexdef("Kernel load address",
! 746: BE32_TO_HOST(hdr->kernel_la),
! 747: board->kernel_la);
! 748: inspect_fw_phexdef("Kernel entry point",
! 749: BE32_TO_HOST(hdr->kernel_ep),
! 750: board->kernel_ep);
! 751: inspect_fw_phexdecdef("Rootfs data offset",
! 752: BE32_TO_HOST(hdr->rootfs_ofs),
! 753: board->rootfs_ofs);
! 754: } else {
! 755: inspect_fw_phex("Kernel load address",
! 756: BE32_TO_HOST(hdr->kernel_la));
! 757: inspect_fw_phex("Kernel entry point",
! 758: BE32_TO_HOST(hdr->kernel_ep));
! 759: inspect_fw_phexdec("Rootfs data offset",
! 760: BE32_TO_HOST(hdr->rootfs_ofs));
! 761: }
! 762: inspect_fw_phexdec("Rootfs data length",
! 763: BE32_TO_HOST(hdr->rootfs_len));
! 764: inspect_fw_phexdec("Boot loader data offset",
! 765: BE32_TO_HOST(hdr->boot_ofs));
! 766: inspect_fw_phexdec("Boot loader data length",
! 767: BE32_TO_HOST(hdr->boot_len));
! 768: inspect_fw_phexdec("Total firmware length",
! 769: BE32_TO_HOST(hdr->fw_length));
! 770:
! 771: if (extract) {
! 772: FILE *fp;
! 773: char *filename;
! 774:
! 775: printf("\n");
! 776:
! 777: filename = malloc(strlen(inspect_info.file_name) + 8);
! 778: sprintf(filename, "%s-kernel", inspect_info.file_name);
! 779: printf("Extracting kernel to \"%s\"...\n", filename);
! 780: fp = fopen(filename, "w");
! 781: if (fp) {
! 782: if (!fwrite(buf + BE32_TO_HOST(hdr->kernel_ofs),
! 783: BE32_TO_HOST(hdr->kernel_len), 1, fp)) {
! 784: ERR("error in fwrite(): %s", strerror(errno));
! 785: }
! 786: fclose(fp);
! 787: } else {
! 788: ERR("error in fopen(): %s", strerror(errno));
! 789: }
! 790: free(filename);
! 791:
! 792: filename = malloc(strlen(inspect_info.file_name) + 8);
! 793: sprintf(filename, "%s-rootfs", inspect_info.file_name);
! 794: printf("Extracting rootfs to \"%s\"...\n", filename);
! 795: fp = fopen(filename, "w");
! 796: if (fp) {
! 797: if (!fwrite(buf + BE32_TO_HOST(hdr->rootfs_ofs),
! 798: BE32_TO_HOST(hdr->rootfs_len), 1, fp)) {
! 799: ERR("error in fwrite(): %s", strerror(errno));
! 800: }
! 801: fclose(fp);
! 802: } else {
! 803: ERR("error in fopen(): %s", strerror(errno));
! 804: }
! 805: free(filename);
! 806: }
! 807:
! 808: out_free_buf:
! 809: free(buf);
! 810: out:
! 811: return ret;
! 812: }
! 813:
! 814: int main(int argc, char *argv[])
! 815: {
! 816: int ret = EXIT_FAILURE;
! 817: int err;
! 818:
! 819: FILE *outfile;
! 820:
! 821: progname = basename(argv[0]);
! 822:
! 823: while ( 1 ) {
! 824: int c;
! 825:
! 826: c = getopt(argc, argv, "B:E:L:V:N:ci:k:r:R:o:xhs");
! 827: if (c == -1)
! 828: break;
! 829:
! 830: switch (c) {
! 831: case 'B':
! 832: board_id = optarg;
! 833: break;
! 834: case 'E':
! 835: sscanf(optarg, "0x%x", &kernel_ep);
! 836: break;
! 837: case 'L':
! 838: sscanf(optarg, "0x%x", &kernel_la);
! 839: break;
! 840: case 'V':
! 841: version = optarg;
! 842: break;
! 843: case 'N':
! 844: vendor = optarg;
! 845: break;
! 846: case 'c':
! 847: combined++;
! 848: break;
! 849: case 'k':
! 850: kernel_info.file_name = optarg;
! 851: break;
! 852: case 'r':
! 853: rootfs_info.file_name = optarg;
! 854: break;
! 855: case 'R':
! 856: sscanf(optarg, "0x%x", &rootfs_ofs);
! 857: break;
! 858: case 'o':
! 859: ofname = optarg;
! 860: break;
! 861: case 's':
! 862: strip_padding = 1;
! 863: break;
! 864: case 'i':
! 865: inspect_info.file_name = optarg;
! 866: break;
! 867: case 'x':
! 868: extract = 1;
! 869: break;
! 870: case 'h':
! 871: usage(EXIT_SUCCESS);
! 872: break;
! 873: default:
! 874: usage(EXIT_FAILURE);
! 875: break;
! 876: }
! 877: }
! 878:
! 879: ret = check_options();
! 880: if (ret)
! 881: goto out;
! 882:
! 883: if (!inspect_info.file_name)
! 884: ret = build_fw();
! 885: else
! 886: ret = inspect_fw();
! 887:
! 888: out:
! 889: return ret;
! 890: }
! 891:
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