lib/asn1/der_copy.c

   1 /*
   2  * Copyright (c) 1997 - 2006 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Portions Copyright (c) 2009 Apple Inc. All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  *
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * 3. Neither the name of the Institute nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  */
  35
  36 #include "der_locl.h"
  37
  38 RCSID("$Id$");
  39
  40 int ASN1CALL
  41 der_copy_general_string (const heim_general_string *from,
  42                          heim_general_string *to)
  43 {
  44     *to = strdup(*from);
  45     if(*to == NULL)
  46         return ENOMEM;
  47     return 0;
  48 }
  49
  50 int ASN1CALL
  51 der_copy_integer (const int *from, int *to)
  52 {
  53     *to = *from;
  54     return 0;
  55 }
  56
  57 int ASN1CALL
  58 der_copy_integer64 (const int64_t *from, int64_t *to)
  59 {
  60     *to = *from;
  61     return 0;
  62 }
  63
  64 int ASN1CALL
  65 der_copy_unsigned (const unsigned *from, unsigned *to)
  66 {
  67     *to = *from;
  68     return 0;
  69 }
  70
  71 int ASN1CALL
  72 der_copy_unsigned64 (const uint64_t *from, uint64_t *to)
  73 {
  74     *to = *from;
  75     return 0;
  76 }
  77
  78 int ASN1CALL
  79 der_copy_generalized_time (const time_t *from, time_t *to)
  80 {
  81     *to = *from;
  82     return 0;
  83 }
  84
  85 int ASN1CALL
  86 der_copy_utctime (const time_t *from, time_t *to)
  87 {
  88     *to = *from;
  89     return 0;
  90 }
  91
  92 int ASN1CALL
  93 der_copy_utf8string (const heim_utf8_string *from, heim_utf8_string *to)
  94 {
  95     return der_copy_general_string(from, to);
  96 }
  97
  98 int ASN1CALL
  99 der_copy_printable_string (const heim_printable_string *from,
 100                        heim_printable_string *to)
 101 {
 102     assert(from->length == 0 || (from->length > 0 && from->data != NULL));
 103     to->data = malloc(from->length + 1);
 104     if (to->data == NULL) {
 105         to->length = 0;
 106         return ENOMEM;
 107     }
 108     to->length = from->length;
 109     if (to->length > 0)
 110         memcpy(to->data, from->data, to->length);
 111     ((char *)to->data)[to->length] = '\0';
 112     return 0;
 113 }
 114
 115 int ASN1CALL
 116 der_copy_ia5_string (const heim_ia5_string *from,
 117                      heim_ia5_string *to)
 118 {
 119     return der_copy_printable_string(from, to);
 120 }
 121
 122 int ASN1CALL
 123 der_copy_bmp_string (const heim_bmp_string *from, heim_bmp_string *to)
 124 {
 125     assert(from->length == 0 || (from->length > 0 && from->data != NULL));
 126     if (from->length == 0)
 127         to->data = calloc(1, sizeof(from->data[0]));
 128     else
 129         to->data = malloc(from->length * sizeof(from->data[0]));
 130     if (to->data == NULL) {
 131         to->length = 0;
 132         return ENOMEM;
 133     }
 134     to->length = from->length;
 135     if (to->length > 0)
 136         memcpy(to->data, from->data, to->length * sizeof(to->data[0]));
 137     return 0;
 138 }
 139
 140 int ASN1CALL
 141 der_copy_universal_string (const heim_universal_string *from,
 142                            heim_universal_string *to)
 143 {
 144     assert(from->length == 0 || (from->length > 0 && from->data != NULL));
 145     if (from->length == 0)
 146         to->data = calloc(1, sizeof(from->data[0]));
 147     else
 148         to->data = malloc(from->length * sizeof(from->data[0]));
 149     if (to->data == NULL) {
 150         to->length = 0;
 151         return ENOMEM;
 152     }
 153     to->length = from->length;
 154     if (to->length > 0)
 155         memcpy(to->data, from->data, to->length * sizeof(to->data[0]));
 156     return 0;
 157 }
 158
 159 int ASN1CALL
 160 der_copy_visible_string (const heim_visible_string *from,
 161                          heim_visible_string *to)
 162 {
 163     return der_copy_general_string(from, to);
 164 }
 165
 166 int ASN1CALL
 167 der_copy_octet_string (const heim_octet_string *from, heim_octet_string *to)
 168 {
 169     assert(from->length == 0 || (from->length > 0 && from->data != NULL));
 170     if (from->length == 0) {
 171         if (from->data == NULL) {
 172             *to = *from;
 173             return 0;
 174         }
 175         to->data = calloc(1, 1);
 176     } else
 177         to->data = malloc(from->length);
 178     if (to->data == NULL) {
 179         to->length = 0;
 180         return ENOMEM;
 181     }
 182     to->length = from->length;
 183     if (to->length > 0)
 184         memcpy(to->data, from->data, to->length);
 185     return 0;
 186 }
 187
 188 int ASN1CALL
 189 der_copy_heim_integer (const heim_integer *from, heim_integer *to)
 190 {
 191     assert(from->length == 0 || (from->length > 0 && from->data != NULL));
 192     if (from->length == 0)
 193         to->data = calloc(1, 1);
 194     else
 195         to->data = malloc(from->length);
 196     if (to->data == NULL) {
 197         to->length = 0;
 198         return ENOMEM;
 199     }
 200     to->length = from->length;
 201     if (to->length > 0)
 202         memcpy(to->data, from->data, to->length);
 203     to->negative = from->negative;
 204     return 0;
 205 }
 206
 207 int ASN1CALL
 208 der_copy_oid (const heim_oid *from, heim_oid *to)
 209 {
 210     if (from->length == 0) {
 211         to->length = 0;
 212         to->components = calloc(1, sizeof(*from->components));
 213         if (to->components == NULL)
 214             return ENOMEM;
 215         return 0;
 216     }
 217     assert(from->components != NULL);
 218     to->components = malloc(from->length * sizeof(*from->components));
 219     if (to->components == NULL) {
 220         to->length = 0;
 221         return ENOMEM;
 222     }
 223     to->length = from->length;
 224     memcpy(to->components, from->components,
 225            to->length * sizeof(*to->components));
 226     return 0;
 227 }
 228
 229 int ASN1CALL
 230 der_copy_bit_string (const heim_bit_string *from, heim_bit_string *to)
 231 {
 232     size_t len;
 233
 234     assert(from->length == 0 || (from->length > 0 && from->data != NULL));
 235
 236     len = (from->length + 7) / 8;
 237     if (len == 0)
 238         to->data = calloc(1, 1);
 239     else
 240         to->data = malloc(len);
 241     if (to->data == NULL) {
 242         to->length = 0;
 243         return ENOMEM;
 244     }
 245     to->length = from->length;
 246     if (len > 0)
 247         memcpy(to->data, from->data, len);
 248     return 0;
 249 }