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firmware-utils: mktplinkfw: add support for TP-Link's new region codes
[openwrt/openwrt.git] / tools / firmware-utils / src / mktplinkfw.c
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
25 #include <arpa/inet.h>
26 #include <netinet/in.h>
27
28 #include "md5.h"
29
30 #define ALIGN(x,a) ({ typeof(a) __a = (a); (((x) + __a - 1) & ~(__a - 1)); })
31 #define ARRAY_SIZE(a) (sizeof((a)) / sizeof((a)[0]))
32
33 #define HEADER_VERSION_V1 0x01000000
34 #define HEADER_VERSION_V2 0x02000000
35
36 #define MD5SUM_LEN 16
37
38 struct file_info {
39 char *file_name; /* name of the file */
40 uint32_t file_size; /* length of the file */
41 };
42
43 struct fw_header {
44 uint32_t version; /* header version */
45 char vendor_name[24];
46 char fw_version[36];
47 uint32_t hw_id; /* hardware id */
48 uint32_t hw_rev; /* hardware revision */
49 uint32_t region_code; /* region code */
50 uint8_t md5sum1[MD5SUM_LEN];
51 uint32_t unk2;
52 uint8_t md5sum2[MD5SUM_LEN];
53 uint32_t unk3;
54 uint32_t kernel_la; /* kernel load address */
55 uint32_t kernel_ep; /* kernel entry point */
56 uint32_t fw_length; /* total length of the firmware */
57 uint32_t kernel_ofs; /* kernel data offset */
58 uint32_t kernel_len; /* kernel data length */
59 uint32_t rootfs_ofs; /* rootfs data offset */
60 uint32_t rootfs_len; /* rootfs data length */
61 uint32_t boot_ofs; /* bootloader data offset */
62 uint32_t boot_len; /* bootloader data length */
63 uint16_t ver_hi;
64 uint16_t ver_mid;
65 uint16_t ver_lo;
66 uint8_t pad[130];
67 char region_str1[32];
68 char region_str2[32];
69 uint8_t pad2[160];
70 } __attribute__ ((packed));
71
72 struct flash_layout {
73 char *id;
74 uint32_t fw_max_len;
75 uint32_t kernel_la;
76 uint32_t kernel_ep;
77 uint32_t rootfs_ofs;
78 };
79
80 struct fw_region {
81 char name[4];
82 uint32_t code;
83 };
84
85
86 /*
87 * Globals
88 */
89 static char *ofname;
90 static char *progname;
91 static char *vendor = "TP-LINK Technologies";
92 static char *version = "ver. 1.0";
93 static char *fw_ver = "0.0.0";
94 static uint32_t hdr_ver = HEADER_VERSION_V1;
95
96 static char *layout_id;
97 static struct flash_layout *layout;
98 static char *opt_hw_id;
99 static uint32_t hw_id;
100 static char *opt_hw_rev;
101 static uint32_t hw_rev;
102 static uint32_t opt_hdr_ver = 1;
103 static char *country;
104 static const struct fw_region *region;
105 static int fw_ver_lo;
106 static int fw_ver_mid;
107 static int fw_ver_hi;
108 static struct file_info kernel_info;
109 static uint32_t kernel_la = 0;
110 static uint32_t kernel_ep = 0;
111 static uint32_t kernel_len = 0;
112 static struct file_info rootfs_info;
113 static uint32_t rootfs_ofs = 0;
114 static uint32_t rootfs_align;
115 static struct file_info boot_info;
116 static int combined;
117 static int strip_padding;
118 static int ignore_size;
119 static int add_jffs2_eof;
120 static unsigned char jffs2_eof_mark[4] = {0xde, 0xad, 0xc0, 0xde};
121 static uint32_t fw_max_len;
122 static uint32_t reserved_space;
123
124 static struct file_info inspect_info;
125 static int extract = 0;
126
127 static const char md5salt_normal[MD5SUM_LEN] = {
128 0xdc, 0xd7, 0x3a, 0xa5, 0xc3, 0x95, 0x98, 0xfb,
129 0xdd, 0xf9, 0xe7, 0xf4, 0x0e, 0xae, 0x47, 0x38,
130 };
131
132 static const char md5salt_boot[MD5SUM_LEN] = {
133 0x8c, 0xef, 0x33, 0x5b, 0xd5, 0xc5, 0xce, 0xfa,
134 0xa7, 0x9c, 0x28, 0xda, 0xb2, 0xe9, 0x0f, 0x42,
135 };
136
137 static struct flash_layout layouts[] = {
138 {
139 .id = "4M",
140 .fw_max_len = 0x3c0000,
141 .kernel_la = 0x80060000,
142 .kernel_ep = 0x80060000,
143 .rootfs_ofs = 0x140000,
144 }, {
145 .id = "4Mlzma",
146 .fw_max_len = 0x3c0000,
147 .kernel_la = 0x80060000,
148 .kernel_ep = 0x80060000,
149 .rootfs_ofs = 0x100000,
150 }, {
151 .id = "8M",
152 .fw_max_len = 0x7c0000,
153 .kernel_la = 0x80060000,
154 .kernel_ep = 0x80060000,
155 .rootfs_ofs = 0x140000,
156 }, {
157 .id = "8Mlzma",
158 .fw_max_len = 0x7c0000,
159 .kernel_la = 0x80060000,
160 .kernel_ep = 0x80060000,
161 .rootfs_ofs = 0x100000,
162 }, {
163 .id = "16M",
164 .fw_max_len = 0xf80000,
165 .kernel_la = 0x80060000,
166 .kernel_ep = 0x80060000,
167 .rootfs_ofs = 0x140000,
168 }, {
169 .id = "16Mlzma",
170 .fw_max_len = 0xf80000,
171 .kernel_la = 0x80060000,
172 .kernel_ep = 0x80060000,
173 .rootfs_ofs = 0x100000,
174 }, {
175 .id = "16Mppc",
176 .fw_max_len = 0xf80000,
177 .kernel_la = 0x00000000 ,
178 .kernel_ep = 0xc0000000,
179 .rootfs_ofs = 0x2a0000,
180 }, {
181 /* terminating entry */
182 }
183 };
184
185 static const struct fw_region regions[] = {
186 /* Default region (universal) uses code 0 as well */
187 {"US", 1},
188 {"EU", 0},
189 };
190
191 /*
192 * Message macros
193 */
194 #define ERR(fmt, ...) do { \
195 fflush(0); \
196 fprintf(stderr, "[%s] *** error: " fmt "\n", \
197 progname, ## __VA_ARGS__ ); \
198 } while (0)
199
200 #define ERRS(fmt, ...) do { \
201 int save = errno; \
202 fflush(0); \
203 fprintf(stderr, "[%s] *** error: " fmt ": %s\n", \
204 progname, ## __VA_ARGS__, strerror(save)); \
205 } while (0)
206
207 #define DBG(fmt, ...) do { \
208 fprintf(stderr, "[%s] " fmt "\n", progname, ## __VA_ARGS__ ); \
209 } while (0)
210
211 static struct flash_layout *find_layout(const char *id)
212 {
213 struct flash_layout *ret;
214 struct flash_layout *l;
215
216 ret = NULL;
217 for (l = layouts; l->id != NULL; l++){
218 if (strcasecmp(id, l->id) == 0) {
219 ret = l;
220 break;
221 }
222 };
223
224 return ret;
225 }
226
227 static const struct fw_region * find_region(const char *country) {
228 size_t i;
229
230 for (i = 0; i < ARRAY_SIZE(regions); i++) {
231 if (strcasecmp(regions[i].name, country) == 0)
232 return &regions[i];
233 }
234
235 return NULL;
236 }
237
238 static void usage(int status)
239 {
240 fprintf(stderr, "Usage: %s [OPTIONS...]\n", progname);
241 fprintf(stderr,
242 "\n"
243 "Options:\n"
244 " -c use combined kernel image\n"
245 " -E <ep> overwrite kernel entry point with <ep> (hexval prefixed with 0x)\n"
246 " -L <la> overwrite kernel load address with <la> (hexval prefixed with 0x)\n"
247 " -H <hwid> use hardware id specified with <hwid>\n"
248 " -W <hwrev> use hardware revision specified with <hwrev>\n"
249 " -C <country> set region code to <country>\n"
250 " -F <id> use flash layout specified with <id>\n"
251 " -k <file> read kernel image from the file <file>\n"
252 " -r <file> read rootfs image from the file <file>\n"
253 " -a <align> align the rootfs start on an <align> bytes boundary\n"
254 " -R <offset> overwrite rootfs offset with <offset> (hexval prefixed with 0x)\n"
255 " -o <file> write output to the file <file>\n"
256 " -s strip padding from the end of the image\n"
257 " -S ignore firmware size limit (only for combined images)\n"
258 " -j add jffs2 end-of-filesystem markers\n"
259 " -N <vendor> set image vendor to <vendor>\n"
260 " -V <version> set image version to <version>\n"
261 " -v <version> set firmware version to <version>\n"
262 " -m <version> set header version to <version>\n"
263 " -i <file> inspect given firmware file <file>\n"
264 " -x extract kernel and rootfs while inspecting (requires -i)\n"
265 " -X <size> reserve <size> bytes in the firmware image (hexval prefixed with 0x)\n"
266 " -h show this screen\n"
267 );
268
269 exit(status);
270 }
271
272 static void get_md5(const char *data, int size, uint8_t *md5)
273 {
274 MD5_CTX ctx;
275
276 MD5_Init(&ctx);
277 MD5_Update(&ctx, data, size);
278 MD5_Final(md5, &ctx);
279 }
280
281 static int get_file_stat(struct file_info *fdata)
282 {
283 struct stat st;
284 int res;
285
286 if (fdata->file_name == NULL)
287 return 0;
288
289 res = stat(fdata->file_name, &st);
290 if (res){
291 ERRS("stat failed on %s", fdata->file_name);
292 return res;
293 }
294
295 fdata->file_size = st.st_size;
296 return 0;
297 }
298
299 static int read_to_buf(const struct file_info *fdata, char *buf)
300 {
301 FILE *f;
302 int ret = EXIT_FAILURE;
303
304 f = fopen(fdata->file_name, "r");
305 if (f == NULL) {
306 ERRS("could not open \"%s\" for reading", fdata->file_name);
307 goto out;
308 }
309
310 errno = 0;
311 fread(buf, fdata->file_size, 1, f);
312 if (errno != 0) {
313 ERRS("unable to read from file \"%s\"", fdata->file_name);
314 goto out_close;
315 }
316
317 ret = EXIT_SUCCESS;
318
319 out_close:
320 fclose(f);
321 out:
322 return ret;
323 }
324
325 static int check_options(void)
326 {
327 int ret;
328 int exceed_bytes;
329
330 if (inspect_info.file_name) {
331 ret = get_file_stat(&inspect_info);
332 if (ret)
333 return ret;
334
335 return 0;
336 } else if (extract) {
337 ERR("no firmware for inspection specified");
338 return -1;
339 }
340
341 if (opt_hw_id == NULL) {
342 ERR("hardware id not specified");
343 return -1;
344 }
345 hw_id = strtoul(opt_hw_id, NULL, 0);
346
347 if (layout_id == NULL) {
348 ERR("flash layout is not specified");
349 return -1;
350 }
351
352 if (opt_hw_rev)
353 hw_rev = strtoul(opt_hw_rev, NULL, 0);
354 else
355 hw_rev = 1;
356
357 if (country) {
358 region = find_region(country);
359 if (!region) {
360 ERR("unknown region code \"%s\"", country);
361 return -1;
362 }
363 }
364
365 layout = find_layout(layout_id);
366 if (layout == NULL) {
367 ERR("unknown flash layout \"%s\"", layout_id);
368 return -1;
369 }
370
371 if (!kernel_la)
372 kernel_la = layout->kernel_la;
373 if (!kernel_ep)
374 kernel_ep = layout->kernel_ep;
375 if (!rootfs_ofs)
376 rootfs_ofs = layout->rootfs_ofs;
377
378 if (reserved_space > layout->fw_max_len) {
379 ERR("reserved space is not valid");
380 return -1;
381 }
382
383 fw_max_len = layout->fw_max_len - reserved_space;
384
385 if (kernel_info.file_name == NULL) {
386 ERR("no kernel image specified");
387 return -1;
388 }
389
390 ret = get_file_stat(&kernel_info);
391 if (ret)
392 return ret;
393
394 kernel_len = kernel_info.file_size;
395
396 if (combined) {
397 exceed_bytes = kernel_info.file_size - (fw_max_len - sizeof(struct fw_header));
398 if (exceed_bytes > 0) {
399 if (!ignore_size) {
400 ERR("kernel image is too big by %i bytes", exceed_bytes);
401 return -1;
402 }
403 layout->fw_max_len = sizeof(struct fw_header) +
404 kernel_info.file_size +
405 reserved_space;
406 }
407 } else {
408 if (rootfs_info.file_name == NULL) {
409 ERR("no rootfs image specified");
410 return -1;
411 }
412
413 ret = get_file_stat(&rootfs_info);
414 if (ret)
415 return ret;
416
417 if (rootfs_align) {
418 kernel_len += sizeof(struct fw_header);
419 kernel_len = ALIGN(kernel_len, rootfs_align);
420 kernel_len -= sizeof(struct fw_header);
421
422 DBG("kernel length aligned to %u", kernel_len);
423
424 exceed_bytes = kernel_len + rootfs_info.file_size - (fw_max_len - sizeof(struct fw_header));
425 if (exceed_bytes > 0) {
426 ERR("images are too big by %i bytes", exceed_bytes);
427 return -1;
428 }
429 } else {
430 exceed_bytes = kernel_info.file_size - (rootfs_ofs - sizeof(struct fw_header));
431 if (exceed_bytes > 0) {
432 ERR("kernel image is too big by %i bytes", exceed_bytes);
433 return -1;
434 }
435
436 exceed_bytes = rootfs_info.file_size - (fw_max_len - rootfs_ofs);
437 if (exceed_bytes > 0) {
438 ERR("rootfs image is too big by %i bytes", exceed_bytes);
439 return -1;
440 }
441 }
442 }
443
444 if (ofname == NULL) {
445 ERR("no output file specified");
446 return -1;
447 }
448
449 ret = sscanf(fw_ver, "%d.%d.%d", &fw_ver_hi, &fw_ver_mid, &fw_ver_lo);
450 if (ret != 3) {
451 ERR("invalid firmware version '%s'", fw_ver);
452 return -1;
453 }
454
455 if (opt_hdr_ver == 1) {
456 hdr_ver = HEADER_VERSION_V1;
457 } else if (opt_hdr_ver == 2) {
458 hdr_ver = HEADER_VERSION_V2;
459 } else {
460 ERR("invalid header version '%u'", opt_hdr_ver);
461 return -1;
462 }
463
464 return 0;
465 }
466
467 static void fill_header(char *buf, int len)
468 {
469 struct fw_header *hdr = (struct fw_header *)buf;
470
471 memset(hdr, 0, sizeof(struct fw_header));
472
473 hdr->version = htonl(hdr_ver);
474 strncpy(hdr->vendor_name, vendor, sizeof(hdr->vendor_name));
475 strncpy(hdr->fw_version, version, sizeof(hdr->fw_version));
476 hdr->hw_id = htonl(hw_id);
477 hdr->hw_rev = htonl(hw_rev);
478
479 if (boot_info.file_size == 0)
480 memcpy(hdr->md5sum1, md5salt_normal, sizeof(hdr->md5sum1));
481 else
482 memcpy(hdr->md5sum1, md5salt_boot, sizeof(hdr->md5sum1));
483
484 hdr->kernel_la = htonl(kernel_la);
485 hdr->kernel_ep = htonl(kernel_ep);
486 hdr->fw_length = htonl(layout->fw_max_len);
487 hdr->kernel_ofs = htonl(sizeof(struct fw_header));
488 hdr->kernel_len = htonl(kernel_len);
489 if (!combined) {
490 hdr->rootfs_ofs = htonl(rootfs_ofs);
491 hdr->rootfs_len = htonl(rootfs_info.file_size);
492 }
493
494 hdr->ver_hi = htons(fw_ver_hi);
495 hdr->ver_mid = htons(fw_ver_mid);
496 hdr->ver_lo = htons(fw_ver_lo);
497
498 if (region) {
499 hdr->region_code = htonl(region->code);
500 snprintf(
501 hdr->region_str1, sizeof(hdr->region_str1), "00000000;%02X%02X%02X%02X;",
502 region->name[0], region->name[1], region->name[2], region->name[3]
503 );
504 snprintf(
505 hdr->region_str2, sizeof(hdr->region_str2), "%02X%02X%02X%02X",
506 region->name[0], region->name[1], region->name[2], region->name[3]
507 );
508 }
509
510 get_md5(buf, len, hdr->md5sum1);
511 }
512
513 static int pad_jffs2(char *buf, int currlen)
514 {
515 int len;
516 uint32_t pad_mask;
517
518 len = currlen;
519 pad_mask = (64 * 1024);
520 while ((len < layout->fw_max_len) && (pad_mask != 0)) {
521 uint32_t mask;
522 int i;
523
524 for (i = 10; i < 32; i++) {
525 mask = 1 << i;
526 if (pad_mask & mask)
527 break;
528 }
529
530 len = ALIGN(len, mask);
531
532 for (i = 10; i < 32; i++) {
533 mask = 1 << i;
534 if ((len & (mask - 1)) == 0)
535 pad_mask &= ~mask;
536 }
537
538 for (i = 0; i < sizeof(jffs2_eof_mark); i++)
539 buf[len + i] = jffs2_eof_mark[i];
540
541 len += sizeof(jffs2_eof_mark);
542 }
543
544 return len;
545 }
546
547 static int write_fw(const char *data, int len)
548 {
549 FILE *f;
550 int ret = EXIT_FAILURE;
551
552 f = fopen(ofname, "w");
553 if (f == NULL) {
554 ERRS("could not open \"%s\" for writing", ofname);
555 goto out;
556 }
557
558 errno = 0;
559 fwrite(data, len, 1, f);
560 if (errno) {
561 ERRS("unable to write output file");
562 goto out_flush;
563 }
564
565 DBG("firmware file \"%s\" completed", ofname);
566
567 ret = EXIT_SUCCESS;
568
569 out_flush:
570 fflush(f);
571 fclose(f);
572 if (ret != EXIT_SUCCESS) {
573 unlink(ofname);
574 }
575 out:
576 return ret;
577 }
578
579 static int build_fw(void)
580 {
581 int buflen;
582 char *buf;
583 char *p;
584 int ret = EXIT_FAILURE;
585 int writelen = 0;
586
587 buflen = layout->fw_max_len;
588
589 buf = malloc(buflen);
590 if (!buf) {
591 ERR("no memory for buffer\n");
592 goto out;
593 }
594
595 memset(buf, 0xff, buflen);
596 p = buf + sizeof(struct fw_header);
597 ret = read_to_buf(&kernel_info, p);
598 if (ret)
599 goto out_free_buf;
600
601 writelen = sizeof(struct fw_header) + kernel_len;
602
603 if (!combined) {
604 if (rootfs_align)
605 p = buf + writelen;
606 else
607 p = buf + rootfs_ofs;
608
609 ret = read_to_buf(&rootfs_info, p);
610 if (ret)
611 goto out_free_buf;
612
613 if (rootfs_align)
614 writelen += rootfs_info.file_size;
615 else
616 writelen = rootfs_ofs + rootfs_info.file_size;
617
618 if (add_jffs2_eof)
619 writelen = pad_jffs2(buf, writelen);
620 }
621
622 if (!strip_padding)
623 writelen = buflen;
624
625 fill_header(buf, writelen);
626 ret = write_fw(buf, writelen);
627 if (ret)
628 goto out_free_buf;
629
630 ret = EXIT_SUCCESS;
631
632 out_free_buf:
633 free(buf);
634 out:
635 return ret;
636 }
637
638 /* Helper functions to inspect_fw() representing different output formats */
639 static inline void inspect_fw_pstr(const char *label, const char *str)
640 {
641 printf("%-23s: %s\n", label, str);
642 }
643
644 static inline void inspect_fw_phex(const char *label, uint32_t val)
645 {
646 printf("%-23s: 0x%08x\n", label, val);
647 }
648
649 static inline void inspect_fw_phexdec(const char *label, uint32_t val)
650 {
651 printf("%-23s: 0x%08x / %8u bytes\n", label, val, val);
652 }
653
654 static inline void inspect_fw_pmd5sum(const char *label, const uint8_t *val, const char *text)
655 {
656 int i;
657
658 printf("%-23s:", label);
659 for (i=0; i<MD5SUM_LEN; i++)
660 printf(" %02x", val[i]);
661 printf(" %s\n", text);
662 }
663
664 static int inspect_fw(void)
665 {
666 char *buf;
667 struct fw_header *hdr;
668 uint8_t md5sum[MD5SUM_LEN];
669 int ret = EXIT_FAILURE;
670
671 buf = malloc(inspect_info.file_size);
672 if (!buf) {
673 ERR("no memory for buffer!\n");
674 goto out;
675 }
676
677 ret = read_to_buf(&inspect_info, buf);
678 if (ret)
679 goto out_free_buf;
680 hdr = (struct fw_header *)buf;
681
682 inspect_fw_pstr("File name", inspect_info.file_name);
683 inspect_fw_phexdec("File size", inspect_info.file_size);
684
685 if ((ntohl(hdr->version) != HEADER_VERSION_V1) &&
686 (ntohl(hdr->version) != HEADER_VERSION_V2)) {
687 ERR("file does not seem to have V1/V2 header!\n");
688 goto out_free_buf;
689 }
690
691 inspect_fw_phexdec("Version 1 Header size", sizeof(struct fw_header));
692
693 memcpy(md5sum, hdr->md5sum1, sizeof(md5sum));
694 if (ntohl(hdr->boot_len) == 0)
695 memcpy(hdr->md5sum1, md5salt_normal, sizeof(md5sum));
696 else
697 memcpy(hdr->md5sum1, md5salt_boot, sizeof(md5sum));
698 get_md5(buf, inspect_info.file_size, hdr->md5sum1);
699
700 if (memcmp(md5sum, hdr->md5sum1, sizeof(md5sum))) {
701 inspect_fw_pmd5sum("Header MD5Sum1", md5sum, "(*ERROR*)");
702 inspect_fw_pmd5sum(" --> expected", hdr->md5sum1, "");
703 } else {
704 inspect_fw_pmd5sum("Header MD5Sum1", md5sum, "(ok)");
705 }
706 if (ntohl(hdr->unk2) != 0)
707 inspect_fw_phexdec("Unknown value 2", hdr->unk2);
708 inspect_fw_pmd5sum("Header MD5Sum2", hdr->md5sum2,
709 "(purpose yet unknown, unchecked here)");
710 if (ntohl(hdr->unk3) != 0)
711 inspect_fw_phexdec("Unknown value 3", hdr->unk3);
712
713 printf("\n");
714
715 inspect_fw_pstr("Vendor name", hdr->vendor_name);
716 inspect_fw_pstr("Firmware version", hdr->fw_version);
717 inspect_fw_phex("Hardware ID", ntohl(hdr->hw_id));
718 inspect_fw_phex("Hardware Revision", ntohl(hdr->hw_rev));
719 inspect_fw_phex("Region code", ntohl(hdr->region_code));
720
721 printf("\n");
722
723 inspect_fw_phexdec("Kernel data offset",
724 ntohl(hdr->kernel_ofs));
725 inspect_fw_phexdec("Kernel data length",
726 ntohl(hdr->kernel_len));
727 inspect_fw_phex("Kernel load address",
728 ntohl(hdr->kernel_la));
729 inspect_fw_phex("Kernel entry point",
730 ntohl(hdr->kernel_ep));
731 inspect_fw_phexdec("Rootfs data offset",
732 ntohl(hdr->rootfs_ofs));
733 inspect_fw_phexdec("Rootfs data length",
734 ntohl(hdr->rootfs_len));
735 inspect_fw_phexdec("Boot loader data offset",
736 ntohl(hdr->boot_ofs));
737 inspect_fw_phexdec("Boot loader data length",
738 ntohl(hdr->boot_len));
739 inspect_fw_phexdec("Total firmware length",
740 ntohl(hdr->fw_length));
741
742 if (extract) {
743 FILE *fp;
744 char *filename;
745
746 printf("\n");
747
748 filename = malloc(strlen(inspect_info.file_name) + 8);
749 sprintf(filename, "%s-kernel", inspect_info.file_name);
750 printf("Extracting kernel to \"%s\"...\n", filename);
751 fp = fopen(filename, "w");
752 if (fp) {
753 if (!fwrite(buf + ntohl(hdr->kernel_ofs),
754 ntohl(hdr->kernel_len), 1, fp)) {
755 ERR("error in fwrite(): %s", strerror(errno));
756 }
757 fclose(fp);
758 } else {
759 ERR("error in fopen(): %s", strerror(errno));
760 }
761 free(filename);
762
763 filename = malloc(strlen(inspect_info.file_name) + 8);
764 sprintf(filename, "%s-rootfs", inspect_info.file_name);
765 printf("Extracting rootfs to \"%s\"...\n", filename);
766 fp = fopen(filename, "w");
767 if (fp) {
768 if (!fwrite(buf + ntohl(hdr->rootfs_ofs),
769 ntohl(hdr->rootfs_len), 1, fp)) {
770 ERR("error in fwrite(): %s", strerror(errno));
771 }
772 fclose(fp);
773 } else {
774 ERR("error in fopen(): %s", strerror(errno));
775 }
776 free(filename);
777 }
778
779 out_free_buf:
780 free(buf);
781 out:
782 return ret;
783 }
784
785 int main(int argc, char *argv[])
786 {
787 int ret = EXIT_FAILURE;
788
789 progname = basename(argv[0]);
790
791 while ( 1 ) {
792 int c;
793
794 c = getopt(argc, argv, "a:H:E:F:L:m:V:N:W:C:ci:k:r:R:o:xX:hsSjv:");
795 if (c == -1)
796 break;
797
798 switch (c) {
799 case 'a':
800 sscanf(optarg, "0x%x", &rootfs_align);
801 break;
802 case 'H':
803 opt_hw_id = optarg;
804 break;
805 case 'E':
806 sscanf(optarg, "0x%x", &kernel_ep);
807 break;
808 case 'F':
809 layout_id = optarg;
810 break;
811 case 'W':
812 opt_hw_rev = optarg;
813 break;
814 case 'C':
815 country = optarg;
816 break;
817 case 'L':
818 sscanf(optarg, "0x%x", &kernel_la);
819 break;
820 case 'm':
821 sscanf(optarg, "%u", &opt_hdr_ver);
822 break;
823 case 'V':
824 version = optarg;
825 break;
826 case 'v':
827 fw_ver = optarg;
828 break;
829 case 'N':
830 vendor = optarg;
831 break;
832 case 'c':
833 combined++;
834 break;
835 case 'k':
836 kernel_info.file_name = optarg;
837 break;
838 case 'r':
839 rootfs_info.file_name = optarg;
840 break;
841 case 'R':
842 sscanf(optarg, "0x%x", &rootfs_ofs);
843 break;
844 case 'o':
845 ofname = optarg;
846 break;
847 case 's':
848 strip_padding = 1;
849 break;
850 case 'S':
851 ignore_size = 1;
852 break;
853 case 'i':
854 inspect_info.file_name = optarg;
855 break;
856 case 'j':
857 add_jffs2_eof = 1;
858 break;
859 case 'x':
860 extract = 1;
861 break;
862 case 'h':
863 usage(EXIT_SUCCESS);
864 break;
865 case 'X':
866 sscanf(optarg, "0x%x", &reserved_space);
867 break;
868 default:
869 usage(EXIT_FAILURE);
870 break;
871 }
872 }
873
874 ret = check_options();
875 if (ret)
876 goto out;
877
878 if (!inspect_info.file_name)
879 ret = build_fw();
880 else
881 ret = inspect_fw();
882
883 out:
884 return ret;
885 }
OpenWrt Source Repository