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