FreeCalypso > hg > freecalypso-tools
view loadtools/flprotreg.c @ 921:74d284add54d
fc-fsio: guard against bogus readdir results from the target
If the FFS being operated on contains SE K2x0 extended filenames,
readdir will return strings that are bad for printing. We need to
guard against this possibility, and also against possible other
bogosity that could be sent by other alien firmwares.
author | Mychaela Falconia <falcon@freecalypso.org> |
---|---|
date | Sat, 31 Dec 2022 22:55:23 +0000 |
parents | cf7bd5e705ed |
children |
line wrap: on
line source
/* * This module implements commands dealing with Intel flash protection * register, which holds the IMEI on Compal phones. */ #include <sys/types.h> #include <stdio.h> #include <stdint.h> #include <string.h> #include <strings.h> #include <stdlib.h> #include "flash.h" extern struct flash_bank_info flash_bank_info[2]; flashcmd_protreg(argc, argv, bank) char **argv; { struct flash_bank_info *bi; uint16_t data[9]; int rc; if (argc > 2) { fprintf(stderr, "error: too many arguments\n"); return(-1); } if (flash_detect(bank, 0) < 0) return(-1); bi = flash_bank_info + bank; rc = bi->ops->read_prot_reg(bi, data); if (rc) return(rc); printf("Lock word: %04X\n", data[0]); printf("Factory words: %04X %04X %04X %04X\n", data[1], data[2], data[3], data[4]); printf("User words: %04X %04X %04X %04X\n", data[5], data[6], data[7], data[8]); return(0); } static int compute_cd(digits) u_char *digits; { int i, dig, sum; sum = 0; for (i = 0; i < 14; i++) { dig = digits[i]; if (i & 1) { dig *= 2; if (dig > 9) dig -= 9; } sum += dig; } dig = sum % 10; if (dig) dig = 10 - dig; return dig; } static void format_imei(digits, strout) u_char *digits; char *strout; { int i; char *dp; dp = strout; for (i = 0; i < 15; i++) { if (i == 8 || i == 14) *dp++ = '-'; *dp++ = digits[i] + '0'; } *dp = '\0'; } flashcmd_compal_imei(argc, argv, bank) char **argv; { struct flash_bank_info *bi; uint16_t data[9]; u_char nibbles[16], *dp; char imei_str[18]; int rc, i, j; FILE *of; if (argc > 3) { fprintf(stderr, "error: too many arguments\n"); return(-1); } if (flash_detect(bank, 0) < 0) return(-1); bi = flash_bank_info + bank; rc = bi->ops->read_prot_reg(bi, data); if (rc) return(rc); dp = nibbles; for (i = 0; i < 4; i++) { rc = data[i + 5]; for (j = 0; j < 4; j++) { *dp++ = rc & 0xF; rc >>= 4; } } for (i = 1; i < 16; i++) { if (nibbles[i] > 9) { bad_imei: fprintf(stderr, "No Compal IMEI found\n"); return(-1); } } if (compute_cd(nibbles+1) != nibbles[15]) goto bad_imei; format_imei(nibbles+1, imei_str); puts(imei_str); if (argc < 3) return(0); of = fopen(argv[2], "w"); if (!of) { perror(argv[2]); return(-1); } fprintf(of, "%s\n", imei_str); fclose(of); printf("Saved to %s\n", argv[2]); return(0); }