diff options
Diffstat (limited to 'crypto/heimdal/lib/asn1/der_format.c')
| -rw-r--r-- | crypto/heimdal/lib/asn1/der_format.c | 170 |
1 files changed, 170 insertions, 0 deletions
diff --git a/crypto/heimdal/lib/asn1/der_format.c b/crypto/heimdal/lib/asn1/der_format.c new file mode 100644 index 0000000..6908bdd --- /dev/null +++ b/crypto/heimdal/lib/asn1/der_format.c @@ -0,0 +1,170 @@ +/* + * Copyright (c) 2005 Kungliga Tekniska Högskolan + * (Royal Institute of Technology, Stockholm, Sweden). + * 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" +#include <hex.h> + +RCSID("$Id: der_format.c 20861 2007-06-03 20:18:29Z lha $"); + +int +der_parse_hex_heim_integer (const char *p, heim_integer *data) +{ + ssize_t len; + + data->length = 0; + data->negative = 0; + data->data = NULL; + + if (*p == '-') { + p++; + data->negative = 1; + } + + len = strlen(p); + if (len <= 0) { + data->data = NULL; + data->length = 0; + return EINVAL; + } + + data->length = (len / 2) + 1; + data->data = malloc(data->length); + if (data->data == NULL) { + data->length = 0; + return ENOMEM; + } + + len = hex_decode(p, data->data, data->length); + if (len < 0) { + free(data->data); + data->data = NULL; + data->length = 0; + return EINVAL; + } + + { + unsigned char *q = data->data; + while(len > 0 && *q == 0) { + q++; + len--; + } + data->length = len; + memmove(data->data, q, len); + } + return 0; +} + +int +der_print_hex_heim_integer (const heim_integer *data, char **p) +{ + ssize_t len; + char *q; + + len = hex_encode(data->data, data->length, p); + if (len < 0) + return ENOMEM; + + if (data->negative) { + len = asprintf(&q, "-%s", *p); + free(*p); + if (len < 0) + return ENOMEM; + *p = q; + } + return 0; +} + +int +der_print_heim_oid (const heim_oid *oid, char delim, char **str) +{ + struct rk_strpool *p = NULL; + int i; + + if (oid->length == 0) + return EINVAL; + + for (i = 0; i < oid->length ; i++) { + p = rk_strpoolprintf(p, "%d", oid->components[i]); + if (p && i < oid->length - 1) + p = rk_strpoolprintf(p, "%c", delim); + if (p == NULL) { + *str = NULL; + return ENOMEM; + } + } + + *str = rk_strpoolcollect(p); + if (*str == NULL) + return ENOMEM; + return 0; +} + +int +der_parse_heim_oid (const char *str, const char *sep, heim_oid *data) +{ + char *s, *w, *brkt, *endptr; + unsigned int *c; + long l; + + data->length = 0; + data->components = NULL; + + if (sep == NULL) + sep = "."; + + s = strdup(str); + + for (w = strtok_r(s, sep, &brkt); + w != NULL; + w = strtok_r(NULL, sep, &brkt)) { + + c = realloc(data->components, + (data->length + 1) * sizeof(data->components[0])); + if (c == NULL) { + der_free_oid(data); + free(s); + return ENOMEM; + } + data->components = c; + + l = strtol(w, &endptr, 10); + if (*endptr != '\0' || l < 0 || l > INT_MAX) { + der_free_oid(data); + free(s); + return EINVAL; + } + data->components[data->length++] = l; + } + free(s); + return 0; +} |
