diff options
Diffstat (limited to 'third_party/heimdal/lib/asn1/der_length.c')
| -rw-r--r-- | third_party/heimdal/lib/asn1/der_length.c | 305 |
1 files changed, 305 insertions, 0 deletions
diff --git a/third_party/heimdal/lib/asn1/der_length.c b/third_party/heimdal/lib/asn1/der_length.c new file mode 100644 index 00000000000..9a9913311d6 --- /dev/null +++ b/third_party/heimdal/lib/asn1/der_length.c @@ -0,0 +1,305 @@ +/* + * Copyright (c) 1997-2005 Kungliga Tekniska Högskolan + * (Royal Institute of Technology, Stockholm, Sweden). + * All rights reserved. + * + * Portions Copyright (c) 2009 Apple Inc. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include "der_locl.h" + +RCSID("$Id$"); + +size_t +_heim_len_unsigned (unsigned val) +{ + size_t ret = 0; + int last_val_gt_128; + + do { + ++ret; + last_val_gt_128 = (val >= 128); + val /= 256; + } while (val); + + if(last_val_gt_128) + ret++; + + return ret; +} + +size_t +_heim_len_unsigned64 (uint64_t val) +{ + size_t ret = 0; + int last_val_gt_128; + + do { + ++ret; + last_val_gt_128 = (val >= 128); + val /= 256; + } while (val); + + if(last_val_gt_128) + ret++; + + return ret; +} + +size_t +_heim_len_int (int val) +{ + unsigned char q; + size_t ret = 0; + + if (val >= 0) { + do { + q = val % 256; + ret++; + val /= 256; + } while(val); + if(q >= 128) + ret++; + } else { + val = ~val; + do { + q = ~(val % 256); + ret++; + val /= 256; + } while(val); + if(q < 128) + ret++; + } + return ret; +} + +size_t +_heim_len_int64 (int64_t val) +{ + unsigned char q; + size_t ret = 0; + + if (val >= 0) { + do { + q = val % 256; + ret++; + val /= 256; + } while(val); + if(q >= 128) + ret++; + } else { + val = ~val; + do { + q = ~(val % 256); + ret++; + val /= 256; + } while(val); + if(q < 128) + ret++; + } + return ret; +} + +static size_t +len_oid (const heim_oid *oid) +{ + size_t ret = 1; + size_t n; + + for (n = 2; n < oid->length; ++n) { + unsigned u = oid->components[n]; + + do { + ++ret; + u /= 128; + } while(u > 0); + } + return ret; +} + +size_t ASN1CALL +der_length_len (size_t len) +{ + if (len < 128) + return 1; + else { + int ret = 0; + do { + ++ret; + len /= 256; + } while (len); + return ret + 1; + } +} + +size_t ASN1CALL +der_length_tag(unsigned int tag) +{ + size_t len = 0; + + if(tag <= 30) + return 1; + while(tag) { + tag /= 128; + len++; + } + return len + 1; +} + +size_t ASN1CALL +der_length_integer (const int *data) +{ + return _heim_len_int (*data); +} + +size_t ASN1CALL +der_length_integer64 (const int64_t *data) +{ + return _heim_len_int64 (*data); +} + +size_t ASN1CALL +der_length_unsigned (const unsigned *data) +{ + return _heim_len_unsigned(*data); +} + +size_t ASN1CALL +der_length_unsigned64 (const uint64_t *data) +{ + return _heim_len_unsigned64(*data); +} + +size_t ASN1CALL +der_length_enumerated (const unsigned *data) +{ + return _heim_len_int (*data); +} + +size_t ASN1CALL +der_length_general_string (const heim_general_string *data) +{ + return strlen(*data); +} + +size_t ASN1CALL +der_length_utf8string (const heim_utf8_string *data) +{ + return strlen(*data); +} + +size_t ASN1CALL +der_length_printable_string (const heim_printable_string *data) +{ + return data->length; +} + +size_t ASN1CALL +der_length_ia5_string (const heim_ia5_string *data) +{ + return data->length; +} + +size_t ASN1CALL +der_length_bmp_string (const heim_bmp_string *data) +{ + return data->length * 2; +} + +size_t ASN1CALL +der_length_universal_string (const heim_universal_string *data) +{ + return data->length * 4; +} + +size_t ASN1CALL +der_length_visible_string (const heim_visible_string *data) +{ + return strlen(*data); +} + +size_t ASN1CALL +der_length_octet_string (const heim_octet_string *k) +{ + return k->length; +} + +size_t ASN1CALL +der_length_heim_integer (const heim_integer *k) +{ + if (k->length == 0) + return 1; + if (k->negative) + return k->length + (((~(((unsigned char *)k->data)[0])) & 0x80) ? 0 : 1); + else + return k->length + ((((unsigned char *)k->data)[0] & 0x80) ? 1 : 0); +} + +size_t ASN1CALL +der_length_oid (const heim_oid *k) +{ + return len_oid (k); +} + +size_t ASN1CALL +der_length_generalized_time (const time_t *t) +{ + heim_octet_string k; + size_t ret; + + _heim_time2generalizedtime (*t, &k, 1); + ret = k.length; + free(k.data); + return ret; +} + +size_t ASN1CALL +der_length_utctime (const time_t *t) +{ + heim_octet_string k; + size_t ret; + + _heim_time2generalizedtime (*t, &k, 0); + ret = k.length; + free(k.data); + return ret; +} + +size_t ASN1CALL +der_length_boolean (const int *k) +{ + return 1; +} + +size_t ASN1CALL +der_length_bit_string (const heim_bit_string *k) +{ + return (k->length + 7) / 8 + 1; +} |