FreeCalypso > hg > freecalypso-tools
view rvinterf/etmsync/fsmisc.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 | e434df27e4d9 |
children |
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/* * Miscellaneous (dangerous!) FFS2 operations */ #include <sys/types.h> #include <ctype.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <strings.h> #include "etm.h" #include "ffs.h" #include "ffserr.h" #include "tmffs2.h" #include "limits.h" #include "ffslimits.h" #include "localtypes.h" #include "localstruct.h" #include "exitcodes.h" extern u_char rvi_msg[]; extern int rvi_msg_len; cmd_format(argc, argv) char **argv; { u_char cmdpkt[MAX_PKT_TO_TARGET], *dp; int rc, slen; slen = strlen(argv[1]); if (slen >= TMFFS_STRING_SIZE) { printf("error: argument exceeds string length limit\n"); return(ERROR_USAGE); } dp = cmdpkt + 1; *dp++ = ETM_FFS2; *dp++ = TMFFS_FORMAT; *dp++ = slen + 1; strcpy(dp, argv[1]); dp += slen + 1; /* magic is 0x2BAD, 16-bit little-endian */ *dp++ = 0xAD; *dp++ = 0x2B; rc = etm_pkt_exch(cmdpkt, dp - cmdpkt - 1); if (rc) return(rc); if (rvi_msg_len != 5) { printf("error: TMFFS_FORMAT response has wrong length\n"); return(ERROR_TARGET); } if (rvi_msg[3]) { report_ffs_err("format", rvi_msg[3]); if (rvi_msg[3] == TMFFS_ERR_NOPREFORMAT) return(0); /* do not stop scripts */ else return(ERROR_TARGET); } return(0); } cmd_preformat() { u_char cmdpkt[6]; int rc; cmdpkt[1] = ETM_FFS2; cmdpkt[2] = TMFFS_PREFORMAT; /* magic is 0xDEAD, 16-bit little-endian */ cmdpkt[3] = 0xAD; cmdpkt[4] = 0xDE; rc = etm_pkt_exch(cmdpkt, 4); if (rc) return(rc); if (rvi_msg_len != 5) { printf("error: TMFFS_PREFORMAT response has wrong length\n"); return(ERROR_TARGET); } if (rvi_msg[3]) { report_ffs_err("preformat", rvi_msg[3]); return(ERROR_TARGET); } return(0); } cmd_set_imeisv(argc, argv) char **argv; { char *filename, *cp, digits[16]; u_char bytes[8]; int pcm_order, i; if (!strcmp(argv[1], "pcm")) { filename = "/pcm/IMEI"; pcm_order = 1; } else if (!strcmp(argv[1], "fc")) { filename = "/etc/IMEISV"; pcm_order = 0; } else { fprintf(stderr, "error: IMEISV storage type argument must be \"pcm\" or \"fc\"\n"); return(ERROR_USAGE); } cp = argv[2]; if (!isdigit(*cp)) { inv: fprintf(stderr, "error: 2nd argument must have 16 decimal digits\n"); return(ERROR_USAGE); } for (i = 0; i < 16; i++) { if (ispunct(*cp)) cp++; if (!isdigit(*cp)) goto inv; digits[i] = *cp++ - '0'; } if (*cp) goto inv; for (i = 0; i < 8; i++) bytes[i] = pcm_order ? digits[i*2+1] << 4 | digits[i*2] : digits[i*2] << 4 | digits[i*2+1]; printf("Writing \"%02X %02X %02X %02X %02X %02X %02X %02X\" into %s\n", bytes[0], bytes[1], bytes[2], bytes[3], bytes[4], bytes[5], bytes[6], bytes[7], filename); return do_short_fwrite(filename, bytes, 8); } cmd_set_pcm_string(argc, argv) char **argv; { char filename[16]; if (strcmp(argv[1], "CGMI") && strcmp(argv[1], "CGMM") && strcmp(argv[1], "CGMR") && strcmp(argv[1], "CGSN")) { fprintf(stderr, "error: \"%s\" is not a recognized PCM string file name\n", argv[1]); return(ERROR_USAGE); } sprintf(filename, "/pcm/%s", argv[1]); if (strlen(argv[2]) > 20) { fprintf(stderr, "error: %s string may not exceed 20 characters\n", filename); return(ERROR_USAGE); } return do_short_fwrite(filename, argv[2], strlen(argv[2])); } cmd_set_rfcap(argc, argv) char **argv; { return set_rfcap(argv[1]); }