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opensc/src/libopensc/pkcs15-cert.c

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/*
* pkcs15-cert.c: PKCS #15 certificate functions
*
* Copyright (C) 2001, 2002 Juha Yrjölä <juha.yrjola@iki.fi>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#if HAVE_CONFIG_H
#include "config.h"
#endif
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <sys/stat.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include <assert.h>
#include "internal.h"
#include "asn1.h"
#include "pkcs15.h"
static int
parse_x509_cert(sc_context_t *ctx, struct sc_pkcs15_der *der, struct sc_pkcs15_cert *cert)
{
int r;
struct sc_algorithm_id sig_alg;
struct sc_pkcs15_pubkey *pubkey = NULL;
unsigned char *serial = NULL, *issuer = NULL, *subject = NULL, *buf = der->value;
size_t serial_len = 0, issuer_len = 0, subject_len = 0, data_len = 0, buflen = der->len;
struct sc_asn1_entry asn1_version[] = {
{ "version", SC_ASN1_INTEGER, SC_ASN1_TAG_INTEGER, 0, &cert->version, NULL },
{ NULL, 0, 0, 0, NULL, NULL }
};
struct sc_asn1_entry asn1_extensions[] = {
{ "x509v3", SC_ASN1_OCTET_STRING, SC_ASN1_TAG_SEQUENCE | SC_ASN1_CONS, SC_ASN1_OPTIONAL| SC_ASN1_ALLOC, &cert->extensions, &cert->extensions_len },
{ NULL, 0, 0, 0, NULL, NULL }
};
struct sc_asn1_entry asn1_tbscert[] = {
{ "version", SC_ASN1_STRUCT, SC_ASN1_CTX | 0 | SC_ASN1_CONS, SC_ASN1_OPTIONAL, asn1_version, NULL },
{ "serialNumber", SC_ASN1_OCTET_STRING, SC_ASN1_TAG_INTEGER, SC_ASN1_ALLOC, &serial, &serial_len },
{ "signature", SC_ASN1_STRUCT, SC_ASN1_TAG_SEQUENCE | SC_ASN1_CONS, 0, NULL, NULL },
{ "issuer", SC_ASN1_OCTET_STRING, SC_ASN1_TAG_SEQUENCE | SC_ASN1_CONS, SC_ASN1_ALLOC, &issuer, &issuer_len },
{ "validity", SC_ASN1_STRUCT, SC_ASN1_TAG_SEQUENCE | SC_ASN1_CONS, 0, NULL, NULL },
{ "subject", SC_ASN1_OCTET_STRING, SC_ASN1_TAG_SEQUENCE | SC_ASN1_CONS, SC_ASN1_ALLOC, &subject, &subject_len },
/* Use a callback to get the algorithm, parameters and pubkey into sc_pkcs15_pubkey */
{ "subjectPublicKeyInfo",SC_ASN1_CALLBACK, SC_ASN1_TAG_SEQUENCE | SC_ASN1_CONS, 0, sc_pkcs15_pubkey_from_spki_fields, &pubkey },
{ "extensions", SC_ASN1_STRUCT, SC_ASN1_CTX | 3 | SC_ASN1_CONS, SC_ASN1_OPTIONAL, asn1_extensions, NULL },
{ NULL, 0, 0, 0, NULL, NULL }
};
struct sc_asn1_entry asn1_cert[] = {
{ "tbsCertificate", SC_ASN1_STRUCT, SC_ASN1_TAG_SEQUENCE | SC_ASN1_CONS, 0, asn1_tbscert, NULL },
{ "signatureAlgorithm", SC_ASN1_ALGORITHM_ID, SC_ASN1_TAG_SEQUENCE | SC_ASN1_CONS, 0, &sig_alg, NULL },
{ "signatureValue", SC_ASN1_BIT_STRING, SC_ASN1_TAG_BIT_STRING, 0, NULL, NULL },
{ NULL, 0, 0, 0, NULL, NULL }
};
struct sc_asn1_entry asn1_serial_number[] = {
{ "serialNumber", SC_ASN1_OCTET_STRING, SC_ASN1_TAG_INTEGER, SC_ASN1_ALLOC, NULL, NULL },
{ NULL, 0, 0, 0, NULL, NULL }
};
struct sc_asn1_entry asn1_subject[] = {
{ "subject", SC_ASN1_OCTET_STRING, SC_ASN1_TAG_SEQUENCE | SC_ASN1_CONS, SC_ASN1_ALLOC, NULL, NULL },
{ NULL, 0, 0, 0, NULL, NULL }
};
struct sc_asn1_entry asn1_issuer[] = {
{ "issuer", SC_ASN1_OCTET_STRING, SC_ASN1_TAG_SEQUENCE | SC_ASN1_CONS, SC_ASN1_ALLOC, NULL, NULL },
{ NULL, 0, 0, 0, NULL, NULL }
};
const u8 *obj;
size_t objlen;
memset(cert, 0, sizeof(*cert));
obj = sc_asn1_verify_tag(ctx, buf, buflen, SC_ASN1_TAG_SEQUENCE | SC_ASN1_CONS, &objlen);
if (obj == NULL)
LOG_TEST_RET(ctx, SC_ERROR_INVALID_ASN1_OBJECT, "X.509 certificate not found");
data_len = objlen + (obj - buf);
cert->data.value = malloc(data_len);
if (!cert->data.value)
LOG_FUNC_RETURN(ctx, SC_ERROR_OUT_OF_MEMORY);
memcpy(cert->data.value, buf, data_len);
cert->data.len = data_len;
r = sc_asn1_decode(ctx, asn1_cert, obj, objlen, NULL, NULL);
cert->key = pubkey;
cert->version++;
LOG_TEST_GOTO_ERR(ctx, r, "ASN.1 parsing of certificate failed");
if (!pubkey)
LOG_TEST_GOTO_ERR(ctx, SC_ERROR_INVALID_ASN1_OBJECT, "Unable to decode subjectPublicKeyInfo from cert");
sc_asn1_clear_algorithm_id(&sig_alg);
if (serial && serial_len) {
sc_format_asn1_entry(asn1_serial_number + 0, serial, &serial_len, 1);
r = sc_asn1_encode(ctx, asn1_serial_number, &cert->serial, &cert->serial_len);
LOG_TEST_GOTO_ERR(ctx, r, "ASN.1 encoding of serial failed");
}
if (subject && subject_len) {
sc_format_asn1_entry(asn1_subject + 0, subject, &subject_len, 1);
r = sc_asn1_encode(ctx, asn1_subject, &cert->subject, &cert->subject_len);
LOG_TEST_GOTO_ERR(ctx, r, "ASN.1 encoding of subject");
}
if (issuer && issuer_len) {
sc_format_asn1_entry(asn1_issuer + 0, issuer, &issuer_len, 1);
r = sc_asn1_encode(ctx, asn1_issuer, &cert->issuer, &cert->issuer_len);
LOG_TEST_GOTO_ERR(ctx, r, "ASN.1 encoding of issuer");
}
err:
free(serial);
free(subject);
free(issuer);
return r;
}
/* Get a component of Distinguished Name (e.i. subject or issuer) USING the oid tag.
* dn can be either cert->subject or cert->issuer.
* dn_len would be cert->subject_len or cert->issuer_len.
*
* Common types:
* CN: struct sc_object_id type = {{2, 5, 4, 3, -1}};
* Country: struct sc_object_id type = {{2, 5, 4, 6, -1}};
* L: struct sc_object_id type = {{2, 5, 4, 7, -1}};
* S: struct sc_object_id type = {{2, 5, 4, 8, -1}};
* O: struct sc_object_id type = {{2, 5, 4, 10, -1}};
* OU: struct sc_object_id type = {{2, 5, 4, 11, -1}};
*
* if *name is NULL, sc_pkcs15_get_name_from_dn will allocate space for name.
*/
int
sc_pkcs15_get_name_from_dn(struct sc_context *ctx, const u8 *dn, size_t dn_len,
const struct sc_object_id *type, u8 **name, size_t *name_len)
{
const u8 *rdn = NULL;
const u8 *next_ava = NULL;
size_t rdn_len = 0;
size_t next_ava_len = 0;
int rv;
rdn = sc_asn1_skip_tag(ctx, &dn, &dn_len, SC_ASN1_TAG_SEQUENCE | SC_ASN1_CONS, &rdn_len);
if (rdn == NULL)
LOG_TEST_RET(ctx, SC_ERROR_INVALID_ASN1_OBJECT, "ASN.1 decoding of Distinguished Name");
for (next_ava = rdn, next_ava_len = rdn_len; next_ava_len; ) {
const u8 *ava, *dummy, *oidp;
struct sc_object_id oid;
size_t ava_len, dummy_len, oid_len;
/* unwrap the set and point to the next ava */
ava = sc_asn1_skip_tag(ctx, &next_ava, &next_ava_len, SC_ASN1_TAG_SET | SC_ASN1_CONS, &ava_len);
if (ava == NULL)
LOG_TEST_RET(ctx, SC_ERROR_INVALID_ASN1_OBJECT, "ASN.1 decoding of AVA");
/* It would be nice to use sc_asn1_decode here to parse the entire AVA, but we are missing 1 critical
* function in the templates: the ability to accept any tag for value. This prevents us from just
* grabbing the value as is out of the template. AVA's can have tags of PRINTABLE_STRING,
* TELETEXSTRING, T61STRING or UTF8_STRING with PRINTABLE_STRING and UTF8_STRING being the most common.
* The other feature that would be nice is returning a pointer to our requested data using the space
* of the parent (basically what this code is doing here), rather than allocating and copying.
*/
/* unwrap the sequence */
dummy = ava; dummy_len = ava_len;
ava = sc_asn1_skip_tag(ctx, &dummy, &dummy_len, SC_ASN1_TAG_SEQUENCE | SC_ASN1_CONS, &ava_len);
if (ava == NULL)
LOG_TEST_RET(ctx, SC_ERROR_INVALID_ASN1_OBJECT, "ASN.1 decoding of AVA");
/* unwrap the oid */
oidp = sc_asn1_skip_tag(ctx, &ava, &ava_len, SC_ASN1_TAG_OBJECT, &oid_len);
if (ava == NULL)
LOG_TEST_RET(ctx, SC_ERROR_INVALID_ASN1_OBJECT, "ASN.1 decoding of AVA OID");
/* Convert to OID */
rv = sc_asn1_decode_object_id(oidp, oid_len, &oid);
if (rv != SC_SUCCESS)
LOG_TEST_RET(ctx, SC_ERROR_INVALID_ASN1_OBJECT, "ASN.1 decoding of AVA OID");
if (sc_compare_oid(&oid, type) == 0)
continue;
/* Yes, then return the name */
dummy = sc_asn1_skip_tag(ctx, &ava, &ava_len, ava[0] & SC_ASN1_TAG_PRIMITIVE, &dummy_len);
if (*name == NULL) {
*name = malloc(dummy_len);
if (*name == NULL)
LOG_FUNC_RETURN(ctx, SC_ERROR_OUT_OF_MEMORY);
*name_len = dummy_len;
}
*name_len = MIN(dummy_len, *name_len);
memcpy(*name, dummy, *name_len);
LOG_FUNC_RETURN(ctx, SC_SUCCESS);
}
LOG_FUNC_RETURN(ctx, SC_ERROR_ASN1_OBJECT_NOT_FOUND);
}
/* Get a specific extension from the cert.
* The extension is identified by it's oid value.
* NOTE: extensions can occur in any number or any order, which is why we
* can't parse them with a single pass of the asn1 decoder.
* If is_critical is supplied, then it is set to 1 if the extension is critical
* and 0 if it is not.
* The data in the extension is extension specific.
* The following are common extension values:
* Subject Key ID: struct sc_object_id type = {{2, 5, 29, 14, -1}};
* Key Usage: struct sc_object_id type = {{2, 5, 29, 15, -1}};
* Subject Alt Name: struct sc_object_id type = {{2, 5, 29, 17, -1}};
* Basic Constraints: struct sc_object_id type = {{2, 5, 29, 19, -1}};
* CRL Distribution Points: struct sc_object_id type = {{2, 5, 29, 31, -1}};
* Certificate Policies: struct sc_object_id type = {{2, 5, 29, 32, -1}};
* Extended Key Usage: struct sc_object_id type = {{2, 5, 29, 37, -1}};
*
* if *ext_val is NULL, sc_pkcs15_get_extension will allocate space for ext_val.
*/
int
sc_pkcs15_get_extension(struct sc_context *ctx, struct sc_pkcs15_cert *cert,
const struct sc_object_id *type, u8 **ext_val,
size_t *ext_val_len, int *is_critical)
{
const u8 *ext = NULL;
const u8 *next_ext = NULL;
size_t ext_len = 0;
size_t next_ext_len = 0;
struct sc_object_id oid;
u8 *val = NULL;
size_t val_len = 0;
int critical;
int r;
struct sc_asn1_entry asn1_cert_ext[] = {
{ "x509v3 entry OID", SC_ASN1_OBJECT, SC_ASN1_TAG_OBJECT, 0, &oid, 0 },
{ "criticalFlag", SC_ASN1_BOOLEAN, SC_ASN1_TAG_BOOLEAN, SC_ASN1_OPTIONAL, &critical, NULL },
{ "extensionValue",SC_ASN1_OCTET_STRING, SC_ASN1_TAG_OCTET_STRING, SC_ASN1_ALLOC, &val, &val_len },
{ NULL, 0, 0, 0, NULL, NULL }
};
for (next_ext = cert->extensions, next_ext_len = cert->extensions_len; next_ext_len; ) {
/* unwrap the set and point to the next ava */
ext = sc_asn1_skip_tag(ctx, &next_ext, &next_ext_len,
SC_ASN1_TAG_SEQUENCE | SC_ASN1_CONS, &ext_len);
if (ext == NULL)
LOG_TEST_RET(ctx, SC_ERROR_INVALID_ASN1_OBJECT, "ASN.1 decoding of AVA");
/*
* use the sc_asn1_decoder for clarity. NOTE it would be more efficient to do this by hand
* so we avoid the many malloc/frees here, but one hopes that one day the asn1_decode will allow
* a 'static pointer' flag that returns a const pointer to the actual asn1 space so we only need
* to make a final copy of the extension value before we return */
critical = 0;
r = sc_asn1_decode(ctx, asn1_cert_ext, ext, ext_len, NULL, NULL);
if (r < 0)
LOG_FUNC_RETURN(ctx, r);
/* is it the RN we are looking for */
if (sc_compare_oid(&oid, type) != 0) {
if (*ext_val == NULL) {
*ext_val = val;
val = NULL;
*ext_val_len = val_len;
/* do not free here -- return the allocated value to caller */
}
else {
*ext_val_len = MIN(*ext_val_len, val_len);
memcpy(*ext_val, val, *ext_val_len);
free(val);
}
if (is_critical)
*is_critical = critical;
r = val_len;
LOG_FUNC_RETURN(ctx, r);
}
if (val) {
free(val);
val = NULL;
}
}
if (val)
free(val);
LOG_FUNC_RETURN(ctx, SC_ERROR_ASN1_OBJECT_NOT_FOUND);
}
/*
* Get an extension whose value is a bit string. These include keyUsage and extendedKeyUsage.
* See above for the other parameters.
*/
int
sc_pkcs15_get_bitstring_extension(struct sc_context *ctx,
struct sc_pkcs15_cert *cert, const struct sc_object_id *type,
unsigned int *value, int *is_critical)
{
int r;
u8 *bit_string = NULL;
size_t bit_string_len=0, val_len = sizeof(*value);
struct sc_asn1_entry asn1_bit_string[] = {
{ "bitString", SC_ASN1_BIT_FIELD, SC_ASN1_TAG_BIT_STRING, 0, value, &val_len },
{ NULL, 0, 0, 0, NULL, NULL }
};
r = sc_pkcs15_get_extension(ctx, cert, type, &bit_string, &bit_string_len, is_critical);
LOG_TEST_RET(ctx, r, "Get extension error");
r = sc_asn1_decode(ctx, asn1_bit_string, bit_string, bit_string_len, NULL, NULL);
LOG_TEST_RET(ctx, r, "Decoding extension bit string");
free(bit_string);
LOG_FUNC_RETURN(ctx, SC_SUCCESS);
}
int
sc_pkcs15_pubkey_from_cert(struct sc_context *ctx,
struct sc_pkcs15_der *cert_blob, struct sc_pkcs15_pubkey **out)
{
int rv;
struct sc_pkcs15_cert * cert;
cert = calloc(1, sizeof(struct sc_pkcs15_cert));
if (cert == NULL)
return SC_ERROR_OUT_OF_MEMORY;
rv = parse_x509_cert(ctx, cert_blob, cert);
*out = cert->key;
cert->key = NULL;
sc_pkcs15_free_certificate(cert);
LOG_FUNC_RETURN(ctx, rv);
}
int
sc_pkcs15_read_certificate(struct sc_pkcs15_card *p15card, const struct sc_pkcs15_cert_info *info,
struct sc_pkcs15_cert **cert_out)
{
struct sc_context *ctx = NULL;
struct sc_pkcs15_cert *cert = NULL;
struct sc_pkcs15_der der;
int r;
if (p15card == NULL || info == NULL || cert_out == NULL) {
return SC_ERROR_INVALID_ARGUMENTS;
}
ctx = p15card->card->ctx;
LOG_FUNC_CALLED(ctx);
if (info->value.len && info->value.value) {
sc_der_copy(&der, &info->value);
}
else if (info->path.len) {
r = sc_pkcs15_read_file(p15card, &info->path, &der.value, &der.len);
LOG_TEST_RET(ctx, r, "Unable to read certificate file.");
}
else {
LOG_FUNC_RETURN(ctx, SC_ERROR_OBJECT_NOT_FOUND);
}
cert = malloc(sizeof(struct sc_pkcs15_cert));
if (cert == NULL) {
free(der.value);
LOG_FUNC_RETURN(ctx, SC_ERROR_OUT_OF_MEMORY);
}
memset(cert, 0, sizeof(struct sc_pkcs15_cert));
if (parse_x509_cert(ctx, &der, cert)) {
free(der.value);
sc_pkcs15_free_certificate(cert);
LOG_FUNC_RETURN(ctx, SC_ERROR_INVALID_ASN1_OBJECT);
}
free(der.value);
*cert_out = cert;
LOG_FUNC_RETURN(ctx, SC_SUCCESS);
}
static const struct sc_asn1_entry c_asn1_cred_ident[] = {
{ "idType", SC_ASN1_INTEGER, SC_ASN1_TAG_INTEGER, 0, NULL, NULL },
{ "idValue", SC_ASN1_OCTET_STRING, SC_ASN1_TAG_OCTET_STRING, 0, NULL, NULL },
{ NULL, 0, 0, 0, NULL, NULL }
};
static const struct sc_asn1_entry c_asn1_com_cert_attr[] = {
{ "iD", SC_ASN1_PKCS15_ID, SC_ASN1_TAG_OCTET_STRING, 0, NULL, NULL },
{ "authority", SC_ASN1_BOOLEAN, SC_ASN1_TAG_BOOLEAN, SC_ASN1_OPTIONAL, NULL, NULL },
{ "identifier", SC_ASN1_STRUCT, SC_ASN1_TAG_SEQUENCE | SC_ASN1_CONS, SC_ASN1_OPTIONAL, NULL, NULL },
/* FIXME: Add rest of the optional fields */
{ NULL, 0, 0, 0, NULL, NULL }
};
static const struct sc_asn1_entry c_asn1_x509_cert_value_choice[] = {
{ "path", SC_ASN1_PATH, SC_ASN1_TAG_SEQUENCE | SC_ASN1_CONS, SC_ASN1_OPTIONAL, NULL, NULL },
{ "direct", SC_ASN1_OCTET_STRING, SC_ASN1_CTX | 0 | SC_ASN1_CONS, SC_ASN1_OPTIONAL | SC_ASN1_ALLOC, NULL, NULL },
{ NULL, 0, 0, 0, NULL, NULL }
};
static const struct sc_asn1_entry c_asn1_x509_cert_attr[] = {
{ "value", SC_ASN1_CHOICE, 0, 0, NULL, NULL },
{ NULL, 0, 0, 0, NULL, NULL }
};
static const struct sc_asn1_entry c_asn1_type_cert_attr[] = {
{ "x509CertificateAttributes", SC_ASN1_STRUCT, SC_ASN1_TAG_SEQUENCE | SC_ASN1_CONS, 0, NULL, NULL },
{ NULL, 0, 0, 0, NULL, NULL }
};
static const struct sc_asn1_entry c_asn1_cert[] = {
{ "x509Certificate", SC_ASN1_PKCS15_OBJECT, SC_ASN1_TAG_SEQUENCE | SC_ASN1_CONS, 0, NULL, NULL },
{ NULL, 0, 0, 0, NULL, NULL }
};
int
sc_pkcs15_decode_cdf_entry(struct sc_pkcs15_card *p15card, struct sc_pkcs15_object *obj,
const u8 ** buf, size_t *buflen)
{
sc_context_t *ctx = p15card->card->ctx;
struct sc_pkcs15_cert_info info;
struct sc_asn1_entry asn1_cred_ident[3], asn1_com_cert_attr[4],
asn1_x509_cert_attr[2], asn1_type_cert_attr[2],
asn1_cert[2], asn1_x509_cert_value_choice[3];
struct sc_asn1_pkcs15_object cert_obj = {
obj, asn1_com_cert_attr, NULL,
asn1_type_cert_attr };
sc_pkcs15_der_t *der = &info.value;
u8 id_value[128];
int id_type;
size_t id_value_len = sizeof(id_value);
int r;
sc_copy_asn1_entry(c_asn1_cred_ident, asn1_cred_ident);
sc_copy_asn1_entry(c_asn1_com_cert_attr, asn1_com_cert_attr);
sc_copy_asn1_entry(c_asn1_x509_cert_attr, asn1_x509_cert_attr);
sc_copy_asn1_entry(c_asn1_x509_cert_value_choice, asn1_x509_cert_value_choice);
sc_copy_asn1_entry(c_asn1_type_cert_attr, asn1_type_cert_attr);
sc_copy_asn1_entry(c_asn1_cert, asn1_cert);
sc_format_asn1_entry(asn1_cred_ident + 0, &id_type, NULL, 0);
sc_format_asn1_entry(asn1_cred_ident + 1, &id_value, &id_value_len, 0);
sc_format_asn1_entry(asn1_com_cert_attr + 0, &info.id, NULL, 0);
sc_format_asn1_entry(asn1_com_cert_attr + 1, &info.authority, NULL, 0);
sc_format_asn1_entry(asn1_com_cert_attr + 2, asn1_cred_ident, NULL, 0);
sc_format_asn1_entry(asn1_x509_cert_attr + 0, asn1_x509_cert_value_choice, NULL, 0);
sc_format_asn1_entry(asn1_x509_cert_value_choice + 0, &info.path, NULL, 0);
sc_format_asn1_entry(asn1_x509_cert_value_choice + 1, &der->value, &der->len, 0);
sc_format_asn1_entry(asn1_type_cert_attr + 0, asn1_x509_cert_attr, NULL, 0);
sc_format_asn1_entry(asn1_cert + 0, &cert_obj, NULL, 0);
/* Fill in defaults */
memset(&info, 0, sizeof(info));
info.authority = 0;
r = sc_asn1_decode(ctx, asn1_cert, *buf, *buflen, buf, buflen);
/* In case of error, trash the cert value (direct coding) */
if (r < 0 && der->value)
free(der->value);
if (r == SC_ERROR_ASN1_END_OF_CONTENTS)
return r;
LOG_TEST_RET(ctx, r, "ASN.1 decoding failed");
if (!p15card->app || !p15card->app->ddo.aid.len) {
r = sc_pkcs15_make_absolute_path(&p15card->file_app->path, &info.path);
LOG_TEST_RET(ctx, r, "Cannot make absolute path");
}
else {
info.path.aid = p15card->app->ddo.aid;
}
sc_log(ctx, "Certificate path '%s'", sc_print_path(&info.path));
obj->type = SC_PKCS15_TYPE_CERT_X509;
obj->data = malloc(sizeof(info));
if (obj->data == NULL)
LOG_FUNC_RETURN(ctx, SC_ERROR_OUT_OF_MEMORY);
memcpy(obj->data, &info, sizeof(info));
return 0;
}
int
sc_pkcs15_encode_cdf_entry(sc_context_t *ctx, const struct sc_pkcs15_object *obj,
u8 **buf, size_t *bufsize)
{
struct sc_asn1_entry asn1_cred_ident[3], asn1_com_cert_attr[4],
asn1_x509_cert_attr[2], asn1_type_cert_attr[2],
asn1_cert[2], asn1_x509_cert_value_choice[3];
struct sc_pkcs15_cert_info *infop = (sc_pkcs15_cert_info_t *) obj->data;
sc_pkcs15_der_t *der = &infop->value;
struct sc_asn1_pkcs15_object cert_obj = { (struct sc_pkcs15_object *) obj,
asn1_com_cert_attr, NULL,
asn1_type_cert_attr };
int r;
sc_copy_asn1_entry(c_asn1_cred_ident, asn1_cred_ident);
sc_copy_asn1_entry(c_asn1_com_cert_attr, asn1_com_cert_attr);
sc_copy_asn1_entry(c_asn1_x509_cert_attr, asn1_x509_cert_attr);
sc_copy_asn1_entry(c_asn1_x509_cert_value_choice, asn1_x509_cert_value_choice);
sc_copy_asn1_entry(c_asn1_type_cert_attr, asn1_type_cert_attr);
sc_copy_asn1_entry(c_asn1_cert, asn1_cert);
sc_format_asn1_entry(asn1_com_cert_attr + 0, (void *) &infop->id, NULL, 1);
if (infop->authority)
sc_format_asn1_entry(asn1_com_cert_attr + 1, (void *) &infop->authority, NULL, 1);
if (infop->path.len || !der->value) {
sc_format_asn1_entry(asn1_x509_cert_value_choice + 0, &infop->path, NULL, 1);
} else {
sc_format_asn1_entry(asn1_x509_cert_value_choice + 1, der->value, &der->len, 1);
}
sc_format_asn1_entry(asn1_type_cert_attr + 0, &asn1_x509_cert_value_choice, NULL, 1);
sc_format_asn1_entry(asn1_cert + 0, (void *) &cert_obj, NULL, 1);
r = sc_asn1_encode(ctx, asn1_cert, buf, bufsize);
return r;
}
void
sc_pkcs15_free_certificate(struct sc_pkcs15_cert *cert)
{
if (cert == NULL) {
return;
}
sc_pkcs15_free_pubkey(cert->key);
free(cert->subject);
free(cert->issuer);
free(cert->serial);
free(cert->data.value);
free(cert->extensions);
free(cert);
}
void
sc_pkcs15_free_cert_info(sc_pkcs15_cert_info_t *cert)
{
if (!cert)
return;
free(cert->value.value);
free(cert);
}
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