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emrtd: Validate date further

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Ave 2020-12-18 03:29:21 +03:00
commit 79e9875b43
1 changed files with 24 additions and 8 deletions
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32
client/src/cmdhfemrtd.c
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@ -1298,6 +1298,22 @@ static void text_to_upper(uint8_t *data, int datalen) {
} }
} }
static bool validate_date(uint8_t *data, int datalen) {
// Date has to be 6 chars
if (datalen != 6) {
return false;
}
// Check for valid date and month numbers
char temp[4] = { 0x00 };
memcpy(temp, data + 2, 2);
int month = (int) strtol(temp, NULL, 10);
memcpy(temp, data + 4, 2);
int day = (int) strtol(temp, NULL, 10);
return !(day <= 0 || day > 31 || month <= 0 || month > 12);
}
static int cmd_hf_emrtd_dump(const char *Cmd) { static int cmd_hf_emrtd_dump(const char *Cmd) {
CLIParserContext *ctx; CLIParserContext *ctx;
CLIParserInit(&ctx, "hf emrtd dump", CLIParserInit(&ctx, "hf emrtd dump",
@ -1333,8 +1349,8 @@ static int cmd_hf_emrtd_dump(const char *Cmd) {
if (CLIParamStrToBuf(arg_get_str(ctx, 2), dob, 6, &slen) != 0 || slen == 0) { if (CLIParamStrToBuf(arg_get_str(ctx, 2), dob, 6, &slen) != 0 || slen == 0) {
BAC = false; BAC = false;
} else { } else {
if (slen != 6) { if (!validate_date(dob, slen)) {
PrintAndLogEx(ERR, "Date of Birth length is incorrect, cannot continue."); PrintAndLogEx(ERR, "Date of birth date format is incorrect, cannot continue.");
PrintAndLogEx(HINT, "Use the format YYMMDD."); PrintAndLogEx(HINT, "Use the format YYMMDD.");
return PM3_ESOFT; return PM3_ESOFT;
} }
@ -1343,8 +1359,8 @@ static int cmd_hf_emrtd_dump(const char *Cmd) {
if (CLIParamStrToBuf(arg_get_str(ctx, 3), expiry, 6, &slen) != 0 || slen == 0) { if (CLIParamStrToBuf(arg_get_str(ctx, 3), expiry, 6, &slen) != 0 || slen == 0) {
BAC = false; BAC = false;
} else { } else {
if (slen != 6) { if (!validate_date(expiry, slen)) {
PrintAndLogEx(ERR, "Document expiry length is incorrect, cannot continue."); PrintAndLogEx(ERR, "Expiry date format is incorrect, cannot continue.");
PrintAndLogEx(HINT, "Use the format YYMMDD."); PrintAndLogEx(HINT, "Use the format YYMMDD.");
return PM3_ESOFT; return PM3_ESOFT;
} }
@ -1388,8 +1404,8 @@ static int cmd_hf_emrtd_info(const char *Cmd) {
if (CLIParamStrToBuf(arg_get_str(ctx, 2), dob, 6, &slen) != 0 || slen == 0) { if (CLIParamStrToBuf(arg_get_str(ctx, 2), dob, 6, &slen) != 0 || slen == 0) {
BAC = false; BAC = false;
} else { } else {
if (slen != 6) { if (!validate_date(dob, slen)) {
PrintAndLogEx(ERR, "Date of Birth length is incorrect, cannot continue."); PrintAndLogEx(ERR, "Date of birth date format is incorrect, cannot continue.");
PrintAndLogEx(HINT, "Use the format YYMMDD."); PrintAndLogEx(HINT, "Use the format YYMMDD.");
return PM3_ESOFT; return PM3_ESOFT;
} }
@ -1398,8 +1414,8 @@ static int cmd_hf_emrtd_info(const char *Cmd) {
if (CLIParamStrToBuf(arg_get_str(ctx, 3), expiry, 6, &slen) != 0 || slen == 0) { if (CLIParamStrToBuf(arg_get_str(ctx, 3), expiry, 6, &slen) != 0 || slen == 0) {
BAC = false; BAC = false;
} else { } else {
if (slen != 6) { if (!validate_date(expiry, slen)) {
PrintAndLogEx(ERR, "Document expiry length is incorrect, cannot continue."); PrintAndLogEx(ERR, "Expiry date format is incorrect, cannot continue.");
PrintAndLogEx(HINT, "Use the format YYMMDD."); PrintAndLogEx(HINT, "Use the format YYMMDD.");
return PM3_ESOFT; return PM3_ESOFT;
} }