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cfe_edit.c
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cfe_edit.c
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#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;
}