-
Notifications
You must be signed in to change notification settings - Fork 1
/
Copy pathcfe_edit.c
609 lines (515 loc) · 23.3 KB
/
cfe_edit.c
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
#include <stddef.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <arpa/inet.h>
#include <inttypes.h>
#include <getopt.h>
typedef struct bcm68380_nvram { // default offset in flash: 0x580
uint32_t version; // 0x6
char bootline[0x100]; /* "e=192.168.1.1:ffffff00 h=192.168.1.100 r=f f=vmlinux i=bcm963xx_fs_kernel d=1 p=0 " */
char board_id[0x10]; /* RV6699, NTU1402: 968380GERG; UFIBER NANO G: UBNT_SFU */
uint32_t main_thread; /* 0 (or 1) */
uint32_t psi_size; // 0x18
uint32_t mac_num; // 0x0A or 0x10
unsigned char basemac[6]; /* 0xA8F94B010203 */
char salign; // reserved?
uint8_t backup_psi; // Backup PSI: 0 disable, 1 - enable
uint32_t oldcksum; // old BROADCOM CRC (not used)
char gponsn[13]; // "ELTX02010203", null-terminated
char gponpass[11]; // "00000000" or " ", null-terminated
char wpspin[8];
char wlanparams[0xFF];
uint8_t wlan_feature; // default 0, only ubnt bootloader has this
uint32_t syslog_size; // 0
uint32_t nandpart_ofs[5]; // boot, rootfs1, rootfs2, data, bbt
uint32_t nandpart_size[5];
char voice_id[0x10]; // LE9530
char afe_id[8];
char salign1[65];
uint8_t aux_percent; // Auxilary filesystem size percent: 0
char salign1a[6];
uint8_t mem_tm; // TM memory allocation RV6699-MGTS, UFIBER NANO G: 0x14; RV6699-RT: 0x2C | flow memory allocation
uint8_t mem_mc; // MC memory allocation: 0x04 | buffer memory allocation
char salign2[10]; // Only UBNT has mappings?
uint8_t part0_size; // Partition 1 Size
uint8_t part1_size; // Partition 2 Size
uint8_t part2_size; // Partition 3 Size
uint8_t part3_size; // Partition 4 Size (DATA)
// Broadcom dongle host driver (dhd_linux.c)
uint8_t mem_dhd0; // DHD0 memory allocation RV6699-MGTS: 0; RV6699-RT: 14
uint8_t mem_dhd1; // DHD1 memory allocation
uint8_t mem_dhd2; // DHD2 memory allocation
char salign2a; // ??
char vendor_params[272];
uint32_t crc; /* common CRC */
} bcm68380_nvram_t;
#ifdef ENABLE_VENDOR_ELTX
#define VENDOR_TYPE_ELTX 1
typedef struct vendor_params_eltx {
char primary_version[12]; // Version of primary firmware in flash
char salign2b[52];
char backup_version[12]; // Version of backup firmware in flash
char salign2c[52];
uint32_t primary_crc; // CRC of primary
uint32_t backup_crc; // CRC of backup
char reserved[134];
} vendor_params_eltx_t;
#endif
#ifdef ENABLE_VENDOR_UBNT
#define VENDOR_TYPE_UBNT 2
typedef struct vendor_params_ubnt {
uint8_t olt_mode; // UFIBER: OLT Vendor ID: 1 - UBNT, 2 - HUAWEI
char salign2b;
uint8_t onu_mode; // UFIBER: ONU work mode: 0 - ENFORCE_BY_OLT, 1 - BRIDGE, 2 - ROUTER; default 0xFF
char reserved[269];
} vendor_params_ubnt_t;
#endif
void hexDump (char *desc, void *addr, int len) {
int i;
unsigned char buff[17];
unsigned char *pc = (unsigned char*)addr;
// Output description if given.
if (desc != NULL)
printf ("%s:\n", desc);
// Process every byte in the data.
for (i = 0; i < len; i++) {
// Multiple of 16 means new line (with line offset).
if ((i % 16) == 0) {
// Just don't print ASCII for the zeroth line.
if (i != 0)
printf (" %s\n", buff);
// Output the offset.
printf (" %04x ", i);
}
// Now the hex code for the specific character.
printf (" %02x", pc[i]);
// And store a printable ASCII character for later.
if ((pc[i] < 0x20) || (pc[i] > 0x7e))
buff[i % 16] = '.';
else
buff[i % 16] = pc[i];
buff[(i % 16) + 1] = '\0';
}
// Pad out last line if not exactly 16 characters.
while ((i % 16) != 0) {
printf (" ");
i++;
}
// And print the final ASCII bit.
printf (" %s\n", buff);
}
void hexdump_nonempty(char *name, void *ptr, int size, uint8_t emptychar) {
void *emptyarray = malloc(size);
memset(emptyarray, emptychar, size);
if (memcmp(emptyarray, ptr, size)) {
hexDump(name, ptr, size);
} else {
printf("%s is empty! (0x%02x)\n", name, emptychar);
}
free (emptyarray);
}
/* реализация crc32 из openssh */
static const uint32_t crc32tab[] = {
0x00000000L, 0x77073096L, 0xee0e612cL, 0x990951baL,
0x076dc419L, 0x706af48fL, 0xe963a535L, 0x9e6495a3L,
0x0edb8832L, 0x79dcb8a4L, 0xe0d5e91eL, 0x97d2d988L,
0x09b64c2bL, 0x7eb17cbdL, 0xe7b82d07L, 0x90bf1d91L,
0x1db71064L, 0x6ab020f2L, 0xf3b97148L, 0x84be41deL,
0x1adad47dL, 0x6ddde4ebL, 0xf4d4b551L, 0x83d385c7L,
0x136c9856L, 0x646ba8c0L, 0xfd62f97aL, 0x8a65c9ecL,
0x14015c4fL, 0x63066cd9L, 0xfa0f3d63L, 0x8d080df5L,
0x3b6e20c8L, 0x4c69105eL, 0xd56041e4L, 0xa2677172L,
0x3c03e4d1L, 0x4b04d447L, 0xd20d85fdL, 0xa50ab56bL,
0x35b5a8faL, 0x42b2986cL, 0xdbbbc9d6L, 0xacbcf940L,
0x32d86ce3L, 0x45df5c75L, 0xdcd60dcfL, 0xabd13d59L,
0x26d930acL, 0x51de003aL, 0xc8d75180L, 0xbfd06116L,
0x21b4f4b5L, 0x56b3c423L, 0xcfba9599L, 0xb8bda50fL,
0x2802b89eL, 0x5f058808L, 0xc60cd9b2L, 0xb10be924L,
0x2f6f7c87L, 0x58684c11L, 0xc1611dabL, 0xb6662d3dL,
0x76dc4190L, 0x01db7106L, 0x98d220bcL, 0xefd5102aL,
0x71b18589L, 0x06b6b51fL, 0x9fbfe4a5L, 0xe8b8d433L,
0x7807c9a2L, 0x0f00f934L, 0x9609a88eL, 0xe10e9818L,
0x7f6a0dbbL, 0x086d3d2dL, 0x91646c97L, 0xe6635c01L,
0x6b6b51f4L, 0x1c6c6162L, 0x856530d8L, 0xf262004eL,
0x6c0695edL, 0x1b01a57bL, 0x8208f4c1L, 0xf50fc457L,
0x65b0d9c6L, 0x12b7e950L, 0x8bbeb8eaL, 0xfcb9887cL,
0x62dd1ddfL, 0x15da2d49L, 0x8cd37cf3L, 0xfbd44c65L,
0x4db26158L, 0x3ab551ceL, 0xa3bc0074L, 0xd4bb30e2L,
0x4adfa541L, 0x3dd895d7L, 0xa4d1c46dL, 0xd3d6f4fbL,
0x4369e96aL, 0x346ed9fcL, 0xad678846L, 0xda60b8d0L,
0x44042d73L, 0x33031de5L, 0xaa0a4c5fL, 0xdd0d7cc9L,
0x5005713cL, 0x270241aaL, 0xbe0b1010L, 0xc90c2086L,
0x5768b525L, 0x206f85b3L, 0xb966d409L, 0xce61e49fL,
0x5edef90eL, 0x29d9c998L, 0xb0d09822L, 0xc7d7a8b4L,
0x59b33d17L, 0x2eb40d81L, 0xb7bd5c3bL, 0xc0ba6cadL,
0xedb88320L, 0x9abfb3b6L, 0x03b6e20cL, 0x74b1d29aL,
0xead54739L, 0x9dd277afL, 0x04db2615L, 0x73dc1683L,
0xe3630b12L, 0x94643b84L, 0x0d6d6a3eL, 0x7a6a5aa8L,
0xe40ecf0bL, 0x9309ff9dL, 0x0a00ae27L, 0x7d079eb1L,
0xf00f9344L, 0x8708a3d2L, 0x1e01f268L, 0x6906c2feL,
0xf762575dL, 0x806567cbL, 0x196c3671L, 0x6e6b06e7L,
0xfed41b76L, 0x89d32be0L, 0x10da7a5aL, 0x67dd4accL,
0xf9b9df6fL, 0x8ebeeff9L, 0x17b7be43L, 0x60b08ed5L,
0xd6d6a3e8L, 0xa1d1937eL, 0x38d8c2c4L, 0x4fdff252L,
0xd1bb67f1L, 0xa6bc5767L, 0x3fb506ddL, 0x48b2364bL,
0xd80d2bdaL, 0xaf0a1b4cL, 0x36034af6L, 0x41047a60L,
0xdf60efc3L, 0xa867df55L, 0x316e8eefL, 0x4669be79L,
0xcb61b38cL, 0xbc66831aL, 0x256fd2a0L, 0x5268e236L,
0xcc0c7795L, 0xbb0b4703L, 0x220216b9L, 0x5505262fL,
0xc5ba3bbeL, 0xb2bd0b28L, 0x2bb45a92L, 0x5cb36a04L,
0xc2d7ffa7L, 0xb5d0cf31L, 0x2cd99e8bL, 0x5bdeae1dL,
0x9b64c2b0L, 0xec63f226L, 0x756aa39cL, 0x026d930aL,
0x9c0906a9L, 0xeb0e363fL, 0x72076785L, 0x05005713L,
0x95bf4a82L, 0xe2b87a14L, 0x7bb12baeL, 0x0cb61b38L,
0x92d28e9bL, 0xe5d5be0dL, 0x7cdcefb7L, 0x0bdbdf21L,
0x86d3d2d4L, 0xf1d4e242L, 0x68ddb3f8L, 0x1fda836eL,
0x81be16cdL, 0xf6b9265bL, 0x6fb077e1L, 0x18b74777L,
0x88085ae6L, 0xff0f6a70L, 0x66063bcaL, 0x11010b5cL,
0x8f659effL, 0xf862ae69L, 0x616bffd3L, 0x166ccf45L,
0xa00ae278L, 0xd70dd2eeL, 0x4e048354L, 0x3903b3c2L,
0xa7672661L, 0xd06016f7L, 0x4969474dL, 0x3e6e77dbL,
0xaed16a4aL, 0xd9d65adcL, 0x40df0b66L, 0x37d83bf0L,
0xa9bcae53L, 0xdebb9ec5L, 0x47b2cf7fL, 0x30b5ffe9L,
0xbdbdf21cL, 0xcabac28aL, 0x53b39330L, 0x24b4a3a6L,
0xbad03605L, 0xcdd70693L, 0x54de5729L, 0x23d967bfL,
0xb3667a2eL, 0xc4614ab8L, 0x5d681b02L, 0x2a6f2b94L,
0xb40bbe37L, 0xc30c8ea1L, 0x5a05df1bL, 0x2d02ef8dL
};
uint32_t ssh_crc32(const uint8_t *buf, uint32_t size, uint32_t crc)
{
uint32_t i;
for (i = 0; i < size; i++)
crc = crc32tab[(crc ^ buf[i]) & 0xff] ^ (crc >> 8);
return crc;
}
int verify_cfe_nvram(unsigned char *src_mem, int vendor_type)
{
uint32_t calc_crc;
bcm68380_nvram_t bcm_nvram;
int retcode = 0;
memcpy(&bcm_nvram, src_mem, sizeof(bcm_nvram));
printf("> broadcom nvram\n");
printf(">> header version : %#x ", ntohl(bcm_nvram.version));
if (ntohl(bcm_nvram.version) != 6) {
printf("UNKNOWN!!!\n");
retcode++;
} else {
printf("(OK)\n");
}
printf(">> main thread : %#x\n", ntohl(bcm_nvram.main_thread));
printf(">> psi size (KB) : %u\n", ntohl(bcm_nvram.psi_size));
printf(">> enable backup PSI : %u\n", bcm_nvram.backup_psi);
printf(">> wlan feature : %#x\n", bcm_nvram.wlan_feature);
printf(">> syslog size (KB) : %u\n", ntohl(bcm_nvram.syslog_size));
printf(">> AUX FS percent : %u\n", bcm_nvram.aux_percent);
if (memchr(&bcm_nvram.bootline, 0, sizeof(bcm_nvram.bootline))) {
printf(">> bootline : \"%s\"\n", bcm_nvram.bootline);
} else {
// string terminated with 0xFF
char *bootline_cleared = malloc(sizeof(bcm_nvram.bootline));
memcpy(bootline_cleared, &bcm_nvram.bootline, sizeof(bcm_nvram.bootline));
char *end_ptr = memchr(bootline_cleared, 0xFF, sizeof(bcm_nvram.bootline));
if (end_ptr) {
memset(end_ptr, 0, 1); //null-terminate
printf(">> bootline (0xFF end) : \"%s\"\n", bootline_cleared);
} else {
hexDump (">> bootline structure dump (unknown)", &bcm_nvram.bootline, sizeof(bcm_nvram.bootline));
retcode++;
}
free(bootline_cleared);
}
printf(">> board_id : \"%s\"\n", bcm_nvram.board_id);
printf(">> MAC num : %u\n", ntohl(bcm_nvram.mac_num));
printf(">> MAC base : %02X%02X%02X%02X%02X%02X\n",
bcm_nvram.basemac[0], bcm_nvram.basemac[1], bcm_nvram.basemac[2], bcm_nvram.basemac[3], bcm_nvram.basemac[4], bcm_nvram.basemac[5]);
printf(">> PON SN : \"%s\"\n", bcm_nvram.gponsn);
printf(">> PON PASS : \"%s\"\n", bcm_nvram.gponpass);
printf(">> voice_id : \"%s\"\n", bcm_nvram.voice_id);
printf(">> TM memory (MB) : %u\n", bcm_nvram.mem_tm);
printf(">> MC memory (MB) : %u\n", bcm_nvram.mem_mc);
printf(">> DHD0 memory (MB) : %u\n", bcm_nvram.mem_dhd0);
printf(">> DHD1 memory (MB) : %u\n", bcm_nvram.mem_dhd1);
printf(">> DHD2 memory (MB) : %u\n", bcm_nvram.mem_dhd2);
// TODO: check offsets
printf(">>> Nand partitions list (size in kilobytes):\n");
printf(">>> boot, offset: %#x,\tsize: %#x\n", ntohl(bcm_nvram.nandpart_ofs[0]), ntohl(bcm_nvram.nandpart_size[0]));
printf(">>> rootfs1, offset: %#x,\tsize: %#x\n", ntohl(bcm_nvram.nandpart_ofs[1]), ntohl(bcm_nvram.nandpart_size[1]));
printf(">>> rootfs2, offset: %#x,\tsize: %#x\n", ntohl(bcm_nvram.nandpart_ofs[2]), ntohl(bcm_nvram.nandpart_size[2]));
printf(">>> data, offset: %#x,\tsize: %#x\n", ntohl(bcm_nvram.nandpart_ofs[3]), ntohl(bcm_nvram.nandpart_size[3]));
printf(">>> bbt, offset: %#x,\tsize: %#x\n", ntohl(bcm_nvram.nandpart_ofs[4]), ntohl(bcm_nvram.nandpart_size[4]));
switch (vendor_type) {
#ifdef ENABLE_VENDOR_ELTX
case VENDOR_TYPE_ELTX:;
vendor_params_eltx_t vendor_params_eltx;
memcpy(&vendor_params_eltx, &bcm_nvram.vendor_params, sizeof(vendor_params_eltx));
printf(">> Parsed vendor parameters\n");
printf(">>> Primary firmware ver : \"%s\"\n", vendor_params_eltx.primary_version);
printf(">>> Backup firmware ver : \"%s\"\n", vendor_params_eltx.backup_version);
printf(">>> Primary firmware CRC : %#08x\n", vendor_params_eltx.primary_crc);
printf(">>> Backup firmware CRC : %#08x\n", vendor_params_eltx.backup_crc);
hexdump_nonempty(">> salign2c structure", &vendor_params_eltx.salign2b, sizeof(vendor_params_eltx.salign2b), 0xFF);
hexdump_nonempty(">> salign2b structure", &vendor_params_eltx.salign2c, sizeof(vendor_params_eltx.salign2c), 0xFF);
hexdump_nonempty(">> reserved space of vendor_params", &vendor_params_eltx.reserved, sizeof(vendor_params_eltx.reserved), 0xFF);
break;
#endif
#ifdef ENABLE_VENDOR_UBNT
case VENDOR_TYPE_UBNT:;
vendor_params_ubnt_t vendor_params_ubnt;
memcpy(&vendor_params_ubnt, &bcm_nvram.vendor_params, sizeof(vendor_params_ubnt));
printf(">> Parsed vendor parameters\n");
printf(">>> ONU work mode : %#x\n", vendor_params_ubnt.onu_mode);
printf(">>> OLT vendor ID : %#x\n", vendor_params_ubnt.olt_mode);
printf(">>> Partition 0 size (MB) : %u\n", bcm_nvram.part0_size);
printf(">>> Partition 1 size (MB) : %u\n", bcm_nvram.part1_size);
printf(">>> Partition 2 size (MB) : %u\n", bcm_nvram.part2_size);
printf(">>> Partition 3 size (MB) : %u\n", bcm_nvram.part3_size);
hexdump_nonempty(">> salign2b structure", &vendor_params_ubnt.salign2b, sizeof(vendor_params_ubnt.salign2b), 0xFF);
hexdump_nonempty(">> reserved space of vendor_params", &vendor_params_ubnt.reserved, sizeof(vendor_params_ubnt.reserved), 0xFF);
break;
#endif
default:;
hexdump_nonempty(">> reserved space of vendor_params", &bcm_nvram.vendor_params, sizeof(bcm_nvram.vendor_params), 0xFF);
break;
}
// old broadcom CRC (not used in V6, but need to check)
if (bcm_nvram.oldcksum == 0xFFFFFFFF) {
printf(">> oldcksum: %#08x (empty, not verified)\n", bcm_nvram.oldcksum);
} else {
calc_crc = htonl(ssh_crc32(src_mem, 0x126, 0xFFFFFFFF));
if (calc_crc == bcm_nvram.oldcksum) {
printf(">> oldcksum: %#08x (no mismatch)\n", bcm_nvram.oldcksum);
} else {
printf("***!!!*** calculated oldcksum mismatch: %#08x, %#08x\n", bcm_nvram.oldcksum, calc_crc);
retcode++;
}
}
// new CRC
memset(src_mem + sizeof(bcm_nvram) - sizeof(bcm_nvram.crc), 0, sizeof(bcm_nvram.crc));
calc_crc = htonl(ssh_crc32(src_mem, sizeof(bcm_nvram), 0xFFFFFFFF));
if (calc_crc == bcm_nvram.crc) {
printf(">> CRC : %#08x (no mismatch)\n", bcm_nvram.crc);
} else {
printf("***!!!*** calculated CRC mismatch: %#08x, %#08x\n", bcm_nvram.crc, calc_crc);
retcode++;
}
hexdump_nonempty(">> afe_id", &bcm_nvram.afe_id, sizeof(bcm_nvram.afe_id), 0xFF);
hexdump_nonempty(">> wpspin", &bcm_nvram.wpspin, sizeof(bcm_nvram.wpspin), 0xFF);
// do not print empty large arrays
hexdump_nonempty(">> wlanparams structure", &bcm_nvram.wlanparams, sizeof(bcm_nvram.wlanparams), 0xFF);
hexdump_nonempty(">> salign structure", &bcm_nvram.salign, sizeof(bcm_nvram.salign), 0xFF);
int salign2_extra = sizeof(bcm_nvram.part0_size) + sizeof(bcm_nvram.part1_size) + sizeof(bcm_nvram.part2_size) + sizeof(bcm_nvram.part3_size);
#ifdef ENABLE_VENDOR_UBNT
if (vendor_type == VENDOR_TYPE_UBNT) salign2_extra = 0;
#endif
hexdump_nonempty(">> salign1 structure", &bcm_nvram.salign1, sizeof(bcm_nvram.salign1), 0xFF);
hexdump_nonempty(">> salign1a structure", &bcm_nvram.salign1a, sizeof(bcm_nvram.salign1a), 0xFF);
hexdump_nonempty(">> salign2 structure", &bcm_nvram.salign2, sizeof(bcm_nvram.salign2) + salign2_extra, 0xFF);
hexdump_nonempty(">> salign2a structure", &bcm_nvram.salign2a, sizeof(bcm_nvram.salign2a), 0xFF);
return retcode;
}
int replace_cfe_nvram_crc(unsigned char *src_mem)
{
uint32_t calc_crc;
bcm68380_nvram_t bcm_nvram;
int retcode = 0;
memcpy(&bcm_nvram, src_mem, sizeof(bcm_nvram));
if (ntohl(bcm_nvram.version) != 6) {
fprintf(stderr, "NVRAM version is wrong, dont know how to handle CRC!\n");
retcode++;
goto exit;
}
memset(src_mem + sizeof(bcm_nvram) - sizeof(bcm_nvram.crc), 0, sizeof(bcm_nvram.crc));
calc_crc = htonl(ssh_crc32(src_mem, sizeof(bcm_nvram), 0xFFFFFFFF));
printf(">> OLD CRC : %#08x\n", bcm_nvram.crc);
printf(">> NEW CRC : %#08x\n", calc_crc);
bcm_nvram.crc = calc_crc;
memcpy(src_mem, &bcm_nvram, sizeof(bcm_nvram)); // store CRC
exit:
return retcode;
}
int edit_cfe_nvram(void *src_mem, int argc, char ** argv, char *options_exist) {
bcm68380_nvram_t bcm_nvram;
int retcode = 0;
memcpy(&bcm_nvram, src_mem, sizeof(bcm_nvram));
optind = 1; // reset getopt counter
int c;
while ( 1 ) {
c = getopt(argc, argv, options_exist);
if (c == -1)
break;
switch (c) {
case 'L': // bootline
memset(bcm_nvram.bootline, 0, sizeof(bcm_nvram.bootline));
strncpy((char *)&bcm_nvram.bootline, optarg, 255);
break;
case 'B': // board id
memset(bcm_nvram.board_id, 0, sizeof(bcm_nvram.board_id));
if (!sscanf(optarg, "%15s", (char *)&bcm_nvram.board_id)) retcode++;
break;
case 'M': // base MAC
if (sscanf(optarg, "%2hhx%2hhx%2hhx%2hhx%2hhx%2hhx",
&bcm_nvram.basemac[0], &bcm_nvram.basemac[1], &bcm_nvram.basemac[2], &bcm_nvram.basemac[3], &bcm_nvram.basemac[4], &bcm_nvram.basemac[5]) != 6) retcode++;
break;
case 'S': // GPON SN
if (!sscanf(optarg, "%12s", (char *)&bcm_nvram.gponsn)) retcode++;
if (strlen(bcm_nvram.gponsn) != (sizeof(bcm_nvram.gponsn) - 1)) retcode++; // check resulting length
break;
case 'P': // GPON PASS
if (!sscanf(optarg, "%10s", (char *)&bcm_nvram.gponpass)) retcode++;
break;
case 'V': // VOICE ID
if (!sscanf(optarg, "%15s", (char *)&bcm_nvram.voice_id)) retcode++;
break;
case 'W': // WPS PIN
if (!sscanf(optarg, "%7s", (char *)&bcm_nvram.wpspin)) retcode++;
break;
case 'I': // psI_size
if (!sscanf(optarg, "0x%2hhx", (char *)&bcm_nvram.psi_size)) { retcode++; } else { bcm_nvram.psi_size = htonl(bcm_nvram.psi_size); }
break;
case 'N': // mac_Num
if (!sscanf(optarg, "0x%2hhx", (char *)&bcm_nvram.mac_num)) { retcode++; } else { bcm_nvram.mac_num = htonl(bcm_nvram.mac_num); }
break;
case 'A': // bAckup_psi
if (!sscanf(optarg, "0x%2hhx", (char *)&bcm_nvram.backup_psi)) retcode++;
break;
case 'Y': // sYslog_size
if (!sscanf(optarg, "0x%2hhx", (char *)&bcm_nvram.syslog_size)) { retcode++; } else { bcm_nvram.syslog_size = htonl(bcm_nvram.syslog_size); }
break;
case 'F': // wlan_Feature
if (!sscanf(optarg, "0x%2hhx", (char *)&bcm_nvram.wlan_feature)) retcode++;
break;
default:
break;
}
}
memcpy(src_mem, &bcm_nvram, sizeof(bcm_nvram)); // store changes
return retcode;
}
int main(int argc, char ** argv)
{
int opt_input = 0, opt_output = 0, opt_verify = 0, opt_edit = 0;
char *input_name = NULL, *output_name = NULL;
int nvram_offset = 0x580; // offset in cferom mtd or fullflash (0x580 - sercomm, 0x540 - ubnt)
int vendor_type = 0;
static char options_exist[] = "vei:o:p:t:L:B:M:S:P:V:W:I:N:A:Y:F:"; // common options set for both getopt()
int c;
while ( 1 ) {
c = getopt(argc, argv, options_exist);
if (c == -1)
break;
switch (c) {
case 'v': // verify nvram
opt_verify++;
break;
case 'e': // edit nvram
opt_edit++;
break;
case 'i': // input file
input_name = optarg;
opt_input++;
break;
case 'o': // output_file
output_name = optarg;
opt_output++;
break;
case 'p': // file position
if (!sscanf(optarg, "0x%8x", &nvram_offset)) goto print_usage;
break;
case 't': // vendor type
if (!sscanf(optarg, "%2d", &vendor_type)) goto print_usage;
break;
case 'L':
case 'B':
case 'M':
case 'S':
case 'P':
case 'V':
case 'W':
case 'I':
case 'N':
case 'A':
case 'Y':
case 'F':
break; // skip options, used in edit function
default:
goto print_usage;
}
}
if (!opt_input) goto print_usage;
if (opt_verify && opt_edit) goto print_usage;
if (opt_verify && !opt_input) goto print_usage;
if (opt_edit && !(opt_input && opt_output)) goto print_usage;
size_t input_size;
int retcode = 0;
FILE* source_file = fopen(input_name,"r");
if (source_file == 0) {
perror("Cannot open file for read");
return 1;
}
/* будет ли fstat тут более хорош? */
fseek(source_file, 0, SEEK_END);
input_size = ftell(source_file);
unsigned char *src_mem = malloc(input_size);
memset(src_mem, 0, input_size);
fseek(source_file, 0, SEEK_SET);
fread(src_mem, input_size, 1, source_file);
fclose(source_file);
if (opt_verify) {
retcode += verify_cfe_nvram(src_mem + nvram_offset, vendor_type);
} else if (opt_edit) {
retcode += edit_cfe_nvram(src_mem + nvram_offset, argc, argv, options_exist);
if (retcode) {
fprintf(stderr, "Error processing input options!\n");
goto exit;
}
retcode += replace_cfe_nvram_crc(src_mem + nvram_offset);
retcode += verify_cfe_nvram(src_mem + nvram_offset, vendor_type);
if (!retcode) {
FILE* target_file = fopen(output_name,"w");
if (target_file == 0) {
perror("Cannot open file for write");
free(src_mem);
return 1;
}
fseek(target_file, 0, SEEK_SET);
fwrite(src_mem, input_size, 1, target_file);
fclose(target_file);
}
}
exit:
free(src_mem);
if (retcode) fprintf(stderr, "Some errors happen.\n");
return retcode;
print_usage:
fprintf(stderr, "Usage for %s:\n"
" -v nvram verify\n"
" -e nvram edit (if no edit option given, just recalculate checksum)\n"
" -i <input file>\n"
" -o <output file> (for edit or recalculate options)\n"
" -p <nvram offset> (hex nvram offset in input cferom or fullflash, default 0x580)\n"
" -t <vendor_structure_type>\n"
" 0: common (default)\n"
#ifdef ENABLE_VENDOR_ELTX
" 1: eltex\n"
#endif
#ifdef ENABLE_VENDOR_UBNT
" 2: ubiquiti\n"
#endif
" -L <bootline> \"e=192.168.1.1:ffffff00 h=192.168.1.100 g= r=f f=vmlinux i=bcm963xx_fs_kernel d=1 p=0 c= a= \" (255 chars max)\n"
" -B <board id> \"968380GERG\"\n"
" -M <MAC base> \"3C9872010203\"\n"
" -S <GPON SN> \"ELTX556677AA\"\n"
" -P <GPON PASS> \" \" (10 chars max)\n"
" -V <VOICE ID> \"LE9540\"\n"
" -W <WPS PIN> \"1234567\" (7 chars max)\n"
" -I <PSI size> \"0x18\"\n"
" -N <MAC num> \"0x10\"\n"
" -A <backup PSI> \"0x0\" or \"0x1\"\n"
" -Y <syslog size> \"0x0\"\n"
" -F <WLAN enable> \"0x0\" or \"0x1\"\n"
"\n (C) [anp/hsw] 2019, GPLv2 license applied\n"
" crc32 code (C) openssh team\n"
"\n", argv[0]);
return 1;
}