diff options
Diffstat (limited to 'src/UTCTime.c')
| -rw-r--r-- | src/UTCTime.c | 173 |
1 files changed, 173 insertions, 0 deletions
diff --git a/src/UTCTime.c b/src/UTCTime.c new file mode 100644 index 0000000..2a27718 --- /dev/null +++ b/src/UTCTime.c @@ -0,0 +1,173 @@ +/*- + * Copyright (c) 2003, 2004 Lev Walkin <vlm@lionet.info>. All rights reserved. + * Redistribution and modifications are permitted subject to BSD license. + */ +#include <asn_internal.h> +#include <UTCTime.h> +#include <GeneralizedTime.h> +#include <errno.h> + +#ifdef __CYGWIN__ +#include "/usr/include/time.h" +#else +#include <time.h> +#endif /* __CYGWIN__ */ + +#ifndef __ASN_INTERNAL_TEST_MODE__ + +/* + * UTCTime basic type description. + */ +static ber_tlv_tag_t asn_DEF_UTCTime_tags[] = { + (ASN_TAG_CLASS_UNIVERSAL | (23 << 2)), /* [UNIVERSAL 23] IMPLICIT ...*/ + (ASN_TAG_CLASS_UNIVERSAL | (26 << 2)), /* [UNIVERSAL 26] IMPLICIT ...*/ + (ASN_TAG_CLASS_UNIVERSAL | (4 << 2)) /* ... OCTET STRING */ +}; +asn_TYPE_descriptor_t asn_DEF_UTCTime = { + "UTCTime", + "UTCTime", + OCTET_STRING_free, + UTCTime_print, + UTCTime_constraint, + OCTET_STRING_decode_ber, /* Implemented in terms of OCTET STRING */ + OCTET_STRING_encode_der, /* Implemented in terms of OCTET STRING */ + OCTET_STRING_decode_xer_utf8, + UTCTime_encode_xer, + 0, 0, + 0, /* Use generic outmost tag fetcher */ + asn_DEF_UTCTime_tags, + sizeof(asn_DEF_UTCTime_tags) + / sizeof(asn_DEF_UTCTime_tags[0]) - 2, + asn_DEF_UTCTime_tags, + sizeof(asn_DEF_UTCTime_tags) + / sizeof(asn_DEF_UTCTime_tags[0]), + 0, /* No PER visible constraints */ + 0, 0, /* No members */ + 0 /* No specifics */ +}; + +#endif /* __ASN_INTERNAL_TEST_MODE__ */ + +/* + * Check that the time looks like the time. + */ +int +UTCTime_constraint(asn_TYPE_descriptor_t *td, const void *sptr, + asn_app_constraint_failed_f *ctfailcb, void *app_key) { + const UTCTime_t *st = (const UTCTime_t *)sptr; + time_t tloc; + + errno = EPERM; /* Just an unlikely error code */ + tloc = asn_UT2time(st, 0, 0); + if(tloc == -1 && errno != EPERM) { + _ASN_CTFAIL(app_key, td, + "%s: Invalid time format: %s (%s:%d)", + td->name, strerror(errno), __FILE__, __LINE__); + return -1; + } + + return 0; +} + +#ifndef __ASN_INTERNAL_TEST_MODE__ + +asn_enc_rval_t +UTCTime_encode_xer(asn_TYPE_descriptor_t *td, void *sptr, + int ilevel, enum xer_encoder_flags_e flags, + asn_app_consume_bytes_f *cb, void *app_key) { + + if(flags & XER_F_CANONICAL) { + asn_enc_rval_t rv; + UTCTime_t *ut; + struct tm tm; + + errno = EPERM; + if(asn_UT2time((UTCTime_t *)sptr, &tm, 1) == -1 + && errno != EPERM) + _ASN_ENCODE_FAILED; + + /* Fractions are not allowed in UTCTime */ + ut = asn_time2GT(0, 0, 1); + if(!ut) _ASN_ENCODE_FAILED; + + rv = OCTET_STRING_encode_xer_utf8(td, sptr, ilevel, flags, + cb, app_key); + OCTET_STRING_free(&asn_DEF_UTCTime, ut, 0); + return rv; + } else { + return OCTET_STRING_encode_xer_utf8(td, sptr, ilevel, flags, + cb, app_key); + } +} + +#endif /* __ASN_INTERNAL_TEST_MODE__ */ + +int +UTCTime_print(asn_TYPE_descriptor_t *td, const void *sptr, int ilevel, + asn_app_consume_bytes_f *cb, void *app_key) { + const UTCTime_t *st = (const UTCTime_t *)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) == -1 && errno != EPERM) + return (cb("<bad-value>", 11, app_key) < 0) ? -1 : 0; + + ret = snprintf(buf, sizeof(buf), + "%04d-%02d-%02d %02d:%02d:%02d (GMT)", + 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) < 0) ? -1 : 0; + } else { + return (cb("<absent>", 8, app_key) < 0) ? -1 : 0; + } +} + +time_t +asn_UT2time(const UTCTime_t *st, struct tm *_tm, int as_gmt) { + char buf[24]; /* "AAMMJJhhmmss+hhmm" + cushion */ + GeneralizedTime_t gt; + + if(!st || !st->buf + || st->size < 11 || st->size >= ((int)sizeof(buf) - 2)) { + errno = EINVAL; + return -1; + } + + gt.buf = (unsigned char *)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, as_gmt); +} + +UTCTime_t * +asn_time2UT(UTCTime_t *opt_ut, const struct tm *tm, int force_gmt) { + GeneralizedTime_t *gt = (GeneralizedTime_t *)opt_ut; + + gt = asn_time2GT(gt, tm, force_gmt); + if(gt == 0) return 0; + + assert(gt->size >= 2); + gt->size -= 2; + memmove(gt->buf, gt->buf + 2, gt->size + 1); + + return (UTCTime_t *)gt; +} + |