/**
* gnutls_pkcs7_get_crl_count:
* @pkcs7: should contain a gnutls_pkcs7_t structure
*
* This function will return the number of certifcates in the PKCS7
* or RFC2630 crl set.
*
* Returns: On success, %GNUTLS_E_SUCCESS is returned, otherwise a
* negative error value.
**/
int
gnutls_pkcs7_get_crl_count (gnutls_pkcs7_t pkcs7)
{
ASN1_TYPE c2 = ASN1_TYPE_EMPTY;
int result, count;
if (pkcs7 == NULL)
return GNUTLS_E_INVALID_REQUEST;
/* Step 1. decode the signed data.
*/
result = _decode_pkcs7_signed_data (pkcs7->pkcs7, &c2, NULL);
if (result < 0)
{
gnutls_assert ();
return result;
}
/* Step 2. Count the CertificateSet */
result = asn1_number_of_elements (c2, "crls", &count);
asn1_delete_structure (&c2);
if (result != ASN1_SUCCESS)
{
gnutls_assert ();
return 0; /* no crls */
}
return count;
}
int
_gnutls_x509_get_dn(ASN1_TYPE asn1_struct,
const char *asn1_rdn_name, gnutls_datum_t * dn,
unsigned flags)
{
gnutls_buffer_st out_str;
int i, k1, result;
_gnutls_buffer_init(&out_str);
result = asn1_number_of_elements(asn1_struct, asn1_rdn_name, &k1);
if (result != ASN1_SUCCESS) {
if (result == ASN1_ELEMENT_NOT_FOUND || result == ASN1_VALUE_NOT_FOUND) {
result = gnutls_assert_val(GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE);
} else {
gnutls_assert();
result = _gnutls_asn2err(result);
}
goto cleanup;
}
if (k1 == 0) {
gnutls_assert();
result = GNUTLS_E_REQUESTED_DATA_NOT_AVAILABLE;
goto cleanup;
}
if (flags & GNUTLS_X509_DN_FLAG_COMPAT) {
for (i=0;i<k1;i++) {
result = append_elements(asn1_struct, asn1_rdn_name, &out_str, i+1, (i==(k1-1))?1:0);
if (result < 0) {
gnutls_assert();
goto cleanup;
}
}
} else {
while (k1 > 0) {
result = append_elements(asn1_struct, asn1_rdn_name, &out_str, k1, k1==1?1:0);
if (result < 0) {
gnutls_assert();
goto cleanup;
}
k1--;
}
}
return _gnutls_buffer_to_datum(&out_str, dn, 1);
cleanup:
_gnutls_buffer_clear(&out_str);
return result;
}
/**
* gnutls_x509_crl_get_crt_count:
* @crl: should contain a #gnutls_x509_crl_t structure
*
* This function will return the number of revoked certificates in the
* given CRL.
*
* Returns: number of certificates, a negative error code on failure.
**/
int gnutls_x509_crl_get_crt_count(gnutls_x509_crl_t crl)
{
int count, result;
if (crl == NULL) {
gnutls_assert();
return GNUTLS_E_INVALID_REQUEST;
}
result =
asn1_number_of_elements(crl->crl,
"tbsCertList.revokedCertificates",
&count);
if (result != ASN1_SUCCESS) {
gnutls_assert();
return 0; /* no certificates */
}
return count;
}
/* Decodes the SafeContents, and puts the output in
* the given bag.
*/
int
_pkcs12_decode_safe_contents (const gnutls_datum_t * content,
gnutls_pkcs12_bag_t bag)
{
char oid[MAX_OID_SIZE], root[ASN1_MAX_NAME_SIZE];
ASN1_TYPE c2 = ASN1_TYPE_EMPTY;
int len, result;
int bag_type;
gnutls_datum_t attr_val;
int count = 0, i, attributes, j;
size_t size;
/* Step 1. Extract the SEQUENCE.
*/
if ((result = asn1_create_element
(_gnutls_get_pkix (), "PKIX1.pkcs-12-SafeContents",
&c2)) != ASN1_SUCCESS)
{
gnutls_assert ();
result = _gnutls_asn2err (result);
goto cleanup;
}
result = asn1_der_decoding (&c2, content->data, content->size, NULL);
if (result != ASN1_SUCCESS)
{
gnutls_assert ();
result = _gnutls_asn2err (result);
goto cleanup;
}
/* Count the number of bags
*/
result = asn1_number_of_elements (c2, "", &count);
if (result != ASN1_SUCCESS)
{
gnutls_assert ();
result = _gnutls_asn2err (result);
goto cleanup;
}
bag->bag_elements = MIN (MAX_BAG_ELEMENTS, count);
for (i = 0; i < bag->bag_elements; i++)
{
snprintf (root, sizeof (root), "?%u.bagId", i + 1);
len = sizeof (oid);
result = asn1_read_value (c2, root, oid, &len);
if (result != ASN1_SUCCESS)
{
gnutls_assert ();
result = _gnutls_asn2err (result);
goto cleanup;
}
/* Read the Bag type
*/
bag_type = oid2bag (oid);
if (bag_type < 0)
{
gnutls_assert ();
goto cleanup;
}
/* Read the Bag Value
*/
snprintf (root, sizeof (root), "?%u.bagValue", i + 1);
result = _gnutls_x509_read_value (c2, root, &bag->element[i].data, 0);
if (result < 0)
{
gnutls_assert ();
goto cleanup;
}
if (bag_type == GNUTLS_BAG_CERTIFICATE || bag_type == GNUTLS_BAG_CRL
|| bag_type == GNUTLS_BAG_SECRET)
{
gnutls_datum_t tmp = bag->element[i].data;
result =
_pkcs12_decode_crt_bag (bag_type, &tmp, &bag->element[i].data);
if (result < 0)
{
gnutls_assert ();
goto cleanup;
}
_gnutls_free_datum (&tmp);
}
/* read the bag attributes
*/
snprintf (root, sizeof (root), "?%u.bagAttributes", i + 1);
result = asn1_number_of_elements (c2, root, &attributes);
if (result != ASN1_SUCCESS && result != ASN1_ELEMENT_NOT_FOUND)
{
gnutls_assert ();
result = _gnutls_asn2err (result);
goto cleanup;
}
if (attributes < 0)
attributes = 1;
if (result != ASN1_ELEMENT_NOT_FOUND)
for (j = 0; j < attributes; j++)
{
snprintf (root, sizeof (root), "?%u.bagAttributes.?%u", i + 1,
j + 1);
result =
_gnutls_x509_decode_and_read_attribute (c2, root, oid,
sizeof (oid), &attr_val,
1, 0);
if (result < 0)
{
gnutls_assert ();
continue; /* continue in case we find some known attributes */
}
if (strcmp (oid, KEY_ID_OID) == 0)
{
size = attr_val.size;
result =
_gnutls_x509_decode_octet_string (NULL, attr_val.data, size,
attr_val.data, &size);
attr_val.size = size;
if (result < 0)
{
_gnutls_free_datum (&attr_val);
gnutls_assert ();
_gnutls_x509_log
("Error decoding PKCS12 Bag Attribute OID '%s'\n", oid);
continue;
}
bag->element[i].local_key_id = attr_val;
}
else if (strcmp (oid, FRIENDLY_NAME_OID) == 0)
{
size = attr_val.size;
result =
_gnutls_x509_decode_octet_string ("BMPString",
attr_val.data, size,
attr_val.data, &size);
attr_val.size = size;
if (result < 0)
{
_gnutls_free_datum (&attr_val);
gnutls_assert ();
_gnutls_x509_log
("Error decoding PKCS12 Bag Attribute OID '%s'\n", oid);
continue;
}
bag->element[i].friendly_name =
ucs2_to_ascii (attr_val.data, attr_val.size);
}
else
{
_gnutls_free_datum (&attr_val);
_gnutls_x509_log
("Unknown PKCS12 Bag Attribute OID '%s'\n", oid);
}
}
bag->element[i].type = bag_type;
}
asn1_delete_structure (&c2);
return 0;
cleanup:
if (c2)
asn1_delete_structure (&c2);
return result;
}
bool
p11_openssl_canon_name_der (p11_dict *asn1_defs,
p11_buffer *der)
{
p11_buffer value;
char outer[64];
char field[64];
node_asn *name;
void *at;
int value_len;
bool failed;
size_t offset;
int ret;
int num;
int len;
int i, j;
name = p11_asn1_decode (asn1_defs, "PKIX1.Name", der->data, der->len, NULL);
return_val_if_fail (name != NULL, false);
ret = asn1_number_of_elements (name, "rdnSequence", &num);
return_val_if_fail (ret == ASN1_SUCCESS, false);
p11_buffer_init (&value, 0);
p11_buffer_reset (der, 0);
for (i = 1, failed = false; !failed && i < num + 1; i++) {
snprintf (outer, sizeof (outer), "rdnSequence.?%d", i);
for (j = 1; !failed; j++) {
snprintf (field, sizeof (field), "%s.?%d.value", outer, j);
value_len = 0;
ret = asn1_read_value (name, field, NULL, &value_len);
if (ret == ASN1_ELEMENT_NOT_FOUND)
break;
return_val_if_fail (ret == ASN1_MEM_ERROR, false);
if (!p11_buffer_reset (&value, value_len))
return_val_if_reached (false);
ret = asn1_read_value (name, field, value.data, &value_len);
return_val_if_fail (ret == ASN1_SUCCESS, false);
value.len = value_len;
if (p11_openssl_canon_string_der (&value)) {
ret = asn1_write_value (name, field, value.data, value.len);
return_val_if_fail (ret == ASN1_SUCCESS, false);
} else {
failed = true;
}
}
/*
* Yes the OpenSSL canon strangeness, is a concatenation
* of all the RelativeDistinguishedName DER encodings, without
* an outside wrapper.
*/
if (!failed) {
len = -1;
ret = asn1_der_coding (name, outer, NULL, &len, NULL);
return_val_if_fail (ret == ASN1_MEM_ERROR, false);
offset = der->len;
at = p11_buffer_append (der, len);
return_val_if_fail (at != NULL, false);
ret = asn1_der_coding (name, outer, at, &len, NULL);
return_val_if_fail (ret == ASN1_SUCCESS, false);
der->len = offset + len;
}
}
asn1_delete_structure (&name);
p11_buffer_uninit (&value);
return !failed;
}
static int append_elements(ASN1_TYPE asn1_struct, const char *asn1_rdn_name, gnutls_buffer_st *str, int k1, unsigned last)
{
int k2, result, max_k2;
int len;
uint8_t value[MAX_STRING_LEN];
char tmpbuffer1[ASN1_MAX_NAME_SIZE];
char tmpbuffer2[ASN1_MAX_NAME_SIZE];
char tmpbuffer3[ASN1_MAX_NAME_SIZE];
const char *ldap_desc;
char oid[MAX_OID_SIZE];
gnutls_datum_t td = { NULL, 0 };
gnutls_datum_t tvd = { NULL, 0 };
/* create a string like "tbsCertList.issuer.rdnSequence.?1"
*/
if (asn1_rdn_name[0] != 0)
snprintf(tmpbuffer1, sizeof(tmpbuffer1), "%s.?%u",
asn1_rdn_name, k1);
else
snprintf(tmpbuffer1, sizeof(tmpbuffer1), "?%u",
k1);
len = sizeof(value) - 1;
result =
asn1_read_value(asn1_struct, tmpbuffer1, value, &len);
if (result != ASN1_VALUE_NOT_FOUND && result != ASN1_SUCCESS) { /* expected */
gnutls_assert();
result = _gnutls_asn2err(result);
goto cleanup;
}
k2 = 0;
result = asn1_number_of_elements(asn1_struct, tmpbuffer1, &max_k2);
if (result != ASN1_SUCCESS) {
gnutls_assert();
result = _gnutls_asn2err(result);
goto cleanup;
}
do { /* Move to the attibute type and values
*/
k2++;
if (tmpbuffer1[0] != 0)
snprintf(tmpbuffer2, sizeof(tmpbuffer2),
"%s.?%u", tmpbuffer1, k2);
else
snprintf(tmpbuffer2, sizeof(tmpbuffer2),
"?%u", k2);
/* Try to read the RelativeDistinguishedName attributes.
*/
len = sizeof(value) - 1;
result =
asn1_read_value(asn1_struct, tmpbuffer2, value,
&len);
if (result == ASN1_ELEMENT_NOT_FOUND)
break;
if (result != ASN1_VALUE_NOT_FOUND && result != ASN1_SUCCESS) { /* expected */
gnutls_assert();
result = _gnutls_asn2err(result);
goto cleanup;
}
/* Read the OID
*/
_gnutls_str_cpy(tmpbuffer3, sizeof(tmpbuffer3),
tmpbuffer2);
_gnutls_str_cat(tmpbuffer3, sizeof(tmpbuffer3),
".type");
len = sizeof(oid) - 1;
result =
asn1_read_value(asn1_struct, tmpbuffer3, oid,
&len);
if (result == ASN1_ELEMENT_NOT_FOUND)
break;
else if (result != ASN1_SUCCESS) {
gnutls_assert();
result = _gnutls_asn2err(result);
goto cleanup;
}
/* Read the Value
*/
_gnutls_str_cpy(tmpbuffer3, sizeof(tmpbuffer3),
tmpbuffer2);
_gnutls_str_cat(tmpbuffer3, sizeof(tmpbuffer3),
".value");
len = 0;
result =
_gnutls_x509_read_value(asn1_struct,
tmpbuffer3, &tvd);
if (result < 0) {
gnutls_assert();
goto cleanup;
}
#define STR_APPEND(y) if ((result=_gnutls_buffer_append_str( str, y)) < 0) { \
gnutls_assert(); \
goto cleanup; \
}
#define DATA_APPEND(x,y) if ((result=_gnutls_buffer_append_data( str, x,y)) < 0) { \
gnutls_assert(); \
goto cleanup; \
}
/* The encodings of adjoining RelativeDistinguishedNames are separated
* by a comma character (',' ASCII 44).
*/
ldap_desc =
gnutls_x509_dn_oid_name(oid,
GNUTLS_X509_DN_OID_RETURN_OID);
STR_APPEND(ldap_desc);
STR_APPEND("=");
result =
_gnutls_x509_dn_to_string(oid, tvd.data,
tvd.size, &td);
if (result < 0) {
gnutls_assert();
_gnutls_debug_log
("Cannot parse OID: '%s' with value '%s'\n",
oid, _gnutls_bin2hex(tvd.data,
tvd.size,
tmpbuffer3,
sizeof
(tmpbuffer3),
NULL));
goto cleanup;
}
DATA_APPEND(td.data, td.size);
_gnutls_free_datum(&td);
_gnutls_free_datum(&tvd);
/* Where there is a multi-valued RDN, the outputs from adjoining
* AttributeTypeAndValues are separated by a plus ('+' ASCII 43)
* character.
*/
if (k2 < max_k2) {
STR_APPEND("+");
} else if (!last) {
STR_APPEND(",");
}
}
while (1);
result = 0;
cleanup:
_gnutls_free_datum(&td);
_gnutls_free_datum(&tvd);
return result;
}
