/**
* Get the subject name (or the issuer) of a certificate.
*/
int asn1_name(const uint8_t *cert, int *offset, char *dn[])
{
int ret = X509_NOT_OK;
int dn_type;
char *tmp;
if (asn1_next_obj(cert, offset, ASN1_SEQUENCE) < 0)
goto end_name;
while (asn1_next_obj(cert, offset, ASN1_SET) >= 0)
{
int i, found = 0;
if (asn1_next_obj(cert, offset, ASN1_SEQUENCE) < 0 ||
(dn_type = asn1_get_oid_x520(cert, offset)) < 0)
goto end_name;
tmp = NULL;
if (asn1_get_printable_str(cert, offset, &tmp) < 0)
{
free(tmp);
goto end_name;
}
/* find the distinguished named type */
for (i = 0; i < X509_NUM_DN_TYPES; i++)
{
if (dn_type == g_dn_types[i])
{
if (dn[i] == NULL)
{
dn[i] = tmp;
found = 1;
break;
}
}
}
if (found == 0) /* not found so get rid of it */
{
free(tmp);
}
}
ret = X509_OK;
end_name:
return ret;
}
/**
* Get the subject name (or the issuer) of a certificate.
*/
int asn1_name(const uint8_t *cert, int *offset, char *dn[])
{
int ret = X509_NOT_OK;
int dn_type = 0;
char *name = NULL;
char* name_prefix = NULL; /* GBG */
if (asn1_next_obj(cert, offset, ASN1_SEQUENCE) < 0)
goto end_name;
while (asn1_next_obj(cert, offset, ASN1_SET) >= 0)
{
int i, found = 0;
if (asn1_next_obj(cert, offset, ASN1_SEQUENCE) < 0) { /* GBG */
goto end_name;
}
/* get the oid */
{
int len = asn1_next_obj(cert, offset, ASN1_OID);
int oid_offset = *offset;
if (len < 0) goto end_name;
if (len == 3 && cert[oid_offset] == 0x55 && cert[oid_offset+1] == 0x04) {
dn_type = cert[oid_offset+2];
} else {
/* convert the OID to a string */
name_prefix = asn1_oid_to_string(cert+oid_offset, len);
if (name_prefix == NULL) goto end_name;
}
*offset += len;
}
if (asn1_get_printable_str(cert, offset, &name) < 0) {
free(name);
if (name_prefix) free(name_prefix);
goto end_name;
}
/* add the prefix if there is one */
if (name_prefix) {
int name_prefix_len = (int)strlen(name_prefix);
int name_len = (int)strlen(name);
char* compound = malloc(name_prefix_len+name_len+2);
memcpy(compound, name_prefix, name_prefix_len);
compound[name_prefix_len] = '=';
memcpy(compound+name_prefix_len+1, name, name_len+1);
free(name);
free(name_prefix);
name = compound;
name_prefix = NULL;
}
/* find the distinguished named type */
for (i = 0; i < X509_NUM_DN_TYPES; i++)
{
if (dn_type == g_dn_types[i])
{
if (dn[i] == NULL)
{
dn[i] = name;
found = 1;
break;
}
}
}
if (found == 0) /* not found so get rid of it */
{
free(name);
}
}
ret = X509_OK;
end_name:
return ret;
}
