| /*- |
| * Copyright (c) 2003, 2004 Lev Walkin <vlm@lionet.info>. All rights reserved. |
| * Redistribution and modifications are permitted subject to BSD license. |
| */ |
| #include <UTCTime.h> |
| #include <GeneralizedTime.h> |
| #include <time.h> |
| #include <errno.h> |
| #include <assert.h> |
| |
| #ifndef __NO_ASN_TABLE__ |
| |
| /* |
| * UTCTime basic type description. |
| */ |
| static ber_tlv_tag_t asn1_DEF_UTCTime_tags[] = { |
| (ASN_TAG_CLASS_UNIVERSAL | (23 << 2)) |
| }; |
| asn1_TYPE_descriptor_t asn1_DEF_UTCTime = { |
| "UTCTime", |
| UTCTime_constraint, |
| OCTET_STRING_decode_ber, /* Implemented in terms of OCTET STRING */ |
| OCTET_STRING_encode_der, /* Implemented in terms of OCTET STRING */ |
| UTCTime_print, |
| OCTET_STRING_free, |
| 0, /* Use generic outmost tag fetcher */ |
| asn1_DEF_UTCTime_tags, |
| sizeof(asn1_DEF_UTCTime_tags) |
| / sizeof(asn1_DEF_UTCTime_tags[0]), |
| 1, /* Single UNIVERSAL tag may be implicitly overriden */ |
| -1, /* Both ways are fine */ |
| 0 /* No specifics */ |
| }; |
| |
| #endif /* __NO_ASN_TABLE__ */ |
| |
| /* |
| * Check that the time looks like the time. |
| */ |
| int |
| UTCTime_constraint(asn1_TYPE_descriptor_t *td, const void *sptr, |
| asn_app_consume_bytes_f *app_errlog, void *app_key) { |
| const UTCTime_t *st = sptr; |
| time_t tloc; |
| |
| errno = EPERM; /* Just an unlikely error code */ |
| tloc = asn_UT2time(st, 0); |
| if(tloc == -1 && errno != EPERM) { |
| _ASN_ERRLOG("%s: Invalid time format: %s", |
| td->name, strerror(errno)); |
| return -1; |
| } |
| |
| return 0; |
| } |
| |
| int |
| UTCTime_print(asn1_TYPE_descriptor_t *td, const void *sptr, int ilevel, |
| asn_app_consume_bytes_f *cb, void *app_key) { |
| const UTCTime_t *st = sptr; |
| |
| (void)td; /* Unused argument */ |
| (void)ilevel; /* Unused argument */ |
| |
| if(st && st->buf) { |
| char buf[32]; |
| struct tm tm; |
| int ret; |
| |
| errno = EPERM; |
| if(asn_UT2time(st, &tm) == -1 && errno != EPERM) |
| return cb("<bad-value>", 11, app_key); |
| |
| ret = snprintf(buf, sizeof(buf), |
| "%04d-%02d-%02d %02d:%02d%02d", |
| tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday, |
| tm.tm_hour, tm.tm_min, tm.tm_sec); |
| assert(ret > 0 && ret < (int)sizeof(buf)); |
| return cb(buf, ret, app_key); |
| } else { |
| return cb("<absent>", 8, app_key); |
| } |
| } |
| |
| time_t |
| asn_UT2time(const UTCTime_t *st, struct tm *_tm) { |
| char buf[17+2]; /* "AAMMJJhhmmss+hhmm" = 17, + 2 = 19 */ |
| GeneralizedTime_t gt; |
| |
| if(!st || !st->buf |
| || st->size < 11 || st->size > ((int)sizeof(buf) - 2)) { |
| errno = EINVAL; |
| return -1; |
| } |
| |
| gt.buf = buf; |
| gt.size = st->size + 2; |
| memcpy(gt.buf + 2, st->buf, st->size); |
| if(st->buf[0] > 0x35) { |
| /* 19xx */ |
| gt.buf[0] = 0x31; |
| gt.buf[1] = 0x39; |
| } else { |
| /* 20xx */ |
| gt.buf[0] = 0x32; |
| gt.buf[1] = 0x30; |
| } |
| |
| return asn_GT2time(>, _tm); |
| } |