asn1_error_code asn1_decode_generalstring(asn1buf *buf, unsigned int *retlen, char **val)
{
setup();
tag(ASN1_GENERALSTRING);
retval = asn1buf_remove_charstring(buf,length,val);
if (retval) return retval;
*retlen = length;
cleanup();
}
asn1_error_code asn1_decode_ia5string(asn1buf *buf, int *retlen, char **val)
{
setup();
tag(ASN1_IA5STRING);
retval = asn1buf_remove_charstring(buf,length,val);
if (retval) return retval;
*retlen = length;
cleanup();
}
asn1_error_code
asn1_decode_generaltime(asn1buf *buf, time_t *val)
{
setup();
char *s;
struct tm ts;
time_t t;
tag(ASN1_GENERALTIME);
if (length != 15) return ASN1_BAD_LENGTH;
retval = asn1buf_remove_charstring(buf,15,&s);
if (retval) return retval;
/* Time encoding: YYYYMMDDhhmmssZ */
if (s[14] != 'Z') {
free(s);
return ASN1_BAD_FORMAT;
}
if (s[0] == '1' && !memcmp("19700101000000Z", s, 15)) {
t = 0;
free(s);
goto done;
}
#define c2i(c) ((c)-'0')
ts.tm_year = 1000*c2i(s[0]) + 100*c2i(s[1]) + 10*c2i(s[2]) + c2i(s[3])
- 1900;
ts.tm_mon = 10*c2i(s[4]) + c2i(s[5]) - 1;
ts.tm_mday = 10*c2i(s[6]) + c2i(s[7]);
ts.tm_hour = 10*c2i(s[8]) + c2i(s[9]);
ts.tm_min = 10*c2i(s[10]) + c2i(s[11]);
ts.tm_sec = 10*c2i(s[12]) + c2i(s[13]);
ts.tm_isdst = -1;
t = krb5int_gmt_mktime(&ts);
free(s);
if (t == -1) return ASN1_BAD_TIMEFORMAT;
done:
*val = t;
cleanup();
}
