pkinit_lib.c revision 159d09a20817016f09b3ea28d1bdada4a336bb91
/*
* COPYRIGHT (C) 2006,2007
* THE REGENTS OF THE UNIVERSITY OF MICHIGAN
* ALL RIGHTS RESERVED
*
* Permission is granted to use, copy, create derivative works
* and redistribute this software and such derivative works
* for any purpose, so long as the name of The University of
* Michigan is not used in any advertising or publicity
* pertaining to the use of distribution of this software
* without specific, written prior authorization. If the
* above copyright notice or any other identification of the
* University of Michigan is included in any copy of any
* portion of this software, then the disclaimer below must
* also be included.
*
* THIS SOFTWARE IS PROVIDED AS IS, WITHOUT REPRESENTATION
* FROM THE UNIVERSITY OF MICHIGAN AS TO ITS FITNESS FOR ANY
* PURPOSE, AND WITHOUT WARRANTY BY THE UNIVERSITY OF
* MICHIGAN OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING
* WITHOUT LIMITATION THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. THE
* REGENTS OF THE UNIVERSITY OF MICHIGAN SHALL NOT BE LIABLE
* FOR ANY DAMAGES, INCLUDING SPECIAL, INDIRECT, INCIDENTAL, OR
* CONSEQUENTIAL DAMAGES, WITH RESPECT TO ANY CLAIM ARISING
* OUT OF OR IN CONNECTION WITH THE USE OF THE SOFTWARE, EVEN
* IF IT HAS BEEN OR IS HEREAFTER ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGES.
*/
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <unistd.h>
#include <string.h>
#include <ctype.h>
#include <assert.h>
#include "pkinit.h"
#define FAKECERT
const krb5_octet_data
dh_oid = { 0, 7, (unsigned char *)"\x2A\x86\x48\xce\x3e\x02\x01" };
krb5_error_code
pkinit_init_req_opts(pkinit_req_opts **reqopts)
{
krb5_error_code retval = ENOMEM;
pkinit_req_opts *opts = NULL;
*reqopts = NULL;
opts = (pkinit_req_opts *) calloc(1, sizeof(pkinit_req_opts));
if (opts == NULL)
return retval;
opts->require_eku = 1;
opts->accept_secondary_eku = 0;
opts->allow_upn = 0;
opts->dh_or_rsa = DH_PROTOCOL;
opts->require_crl_checking = 0;
opts->dh_size = PKINIT_DEFAULT_DH_MIN_BITS;
opts->win2k_target = 0;
opts->win2k_require_cksum = 0;
*reqopts = opts;
return 0;
}
void
pkinit_fini_req_opts(pkinit_req_opts *opts)
{
if (opts != NULL)
free(opts);
return;
}
krb5_error_code
pkinit_init_plg_opts(pkinit_plg_opts **plgopts)
{
krb5_error_code retval = ENOMEM;
pkinit_plg_opts *opts = NULL;
*plgopts = NULL;
opts = (pkinit_plg_opts *) calloc(1, sizeof(pkinit_plg_opts));
if (opts == NULL)
return retval;
opts->require_eku = 1;
opts->accept_secondary_eku = 0;
opts->dh_or_rsa = DH_PROTOCOL;
opts->allow_upn = 0;
opts->require_crl_checking = 0;
opts->dh_min_bits = PKINIT_DEFAULT_DH_MIN_BITS;
*plgopts = opts;
return 0;
}
void
pkinit_fini_plg_opts(pkinit_plg_opts *opts)
{
if (opts != NULL)
free(opts);
return;
}
void
free_krb5_pa_pk_as_req(krb5_pa_pk_as_req **in)
{
if (*in == NULL) return;
if ((*in)->signedAuthPack.data != NULL)
free((*in)->signedAuthPack.data);
if ((*in)->trustedCertifiers != NULL)
free_krb5_external_principal_identifier(&(*in)->trustedCertifiers);
if ((*in)->kdcPkId.data != NULL)
free((*in)->kdcPkId.data);
free(*in);
}
void
free_krb5_pa_pk_as_req_draft9(krb5_pa_pk_as_req_draft9 **in)
{
if (*in == NULL) return;
if ((*in)->signedAuthPack.data != NULL)
free((*in)->signedAuthPack.data);
if ((*in)->kdcCert.data != NULL)
free((*in)->kdcCert.data);
if ((*in)->encryptionCert.data != NULL)
free((*in)->encryptionCert.data);
if ((*in)->trustedCertifiers != NULL)
free_krb5_trusted_ca(&(*in)->trustedCertifiers);
free(*in);
}
void
free_krb5_reply_key_pack(krb5_reply_key_pack **in)
{
if (*in == NULL) return;
if ((*in)->replyKey.contents != NULL)
free((*in)->replyKey.contents);
if ((*in)->asChecksum.contents != NULL)
free((*in)->asChecksum.contents);
free(*in);
}
void
free_krb5_reply_key_pack_draft9(krb5_reply_key_pack_draft9 **in)
{
if (*in == NULL) return;
if ((*in)->replyKey.contents != NULL)
free((*in)->replyKey.contents);
free(*in);
}
void
free_krb5_auth_pack(krb5_auth_pack **in)
{
if ((*in) == NULL) return;
if ((*in)->clientPublicValue != NULL) {
if ((*in)->clientPublicValue->algorithm.algorithm.data != NULL)
free((*in)->clientPublicValue->algorithm.algorithm.data);
if ((*in)->clientPublicValue->algorithm.parameters.data != NULL)
free((*in)->clientPublicValue->algorithm.parameters.data);
if ((*in)->clientPublicValue->subjectPublicKey.data != NULL)
free((*in)->clientPublicValue->subjectPublicKey.data);
free((*in)->clientPublicValue);
}
if ((*in)->pkAuthenticator.paChecksum.contents != NULL)
free((*in)->pkAuthenticator.paChecksum.contents);
if ((*in)->supportedCMSTypes != NULL)
free_krb5_algorithm_identifiers(&((*in)->supportedCMSTypes));
free(*in);
}
void
free_krb5_auth_pack_draft9(krb5_context context,
krb5_auth_pack_draft9 **in)
{
if ((*in) == NULL) return;
krb5_free_principal(context, (*in)->pkAuthenticator.kdcName);
free(*in);
}
void
free_krb5_pa_pk_as_rep(krb5_pa_pk_as_rep **in)
{
if (*in == NULL) return;
switch ((*in)->choice) {
case choice_pa_pk_as_rep_dhInfo:
if ((*in)->u.dh_Info.dhSignedData.data != NULL)
free((*in)->u.dh_Info.dhSignedData.data);
break;
case choice_pa_pk_as_rep_encKeyPack:
if ((*in)->u.encKeyPack.data != NULL)
free((*in)->u.encKeyPack.data);
break;
default:
break;
}
free(*in);
}
void
free_krb5_pa_pk_as_rep_draft9(krb5_pa_pk_as_rep_draft9 **in)
{
if (*in == NULL) return;
if ((*in)->u.encKeyPack.data != NULL)
free((*in)->u.encKeyPack.data);
free(*in);
}
void
free_krb5_external_principal_identifier(krb5_external_principal_identifier ***in)
{
int i = 0;
if (*in == NULL) return;
while ((*in)[i] != NULL) {
if ((*in)[i]->subjectName.data != NULL)
free((*in)[i]->subjectName.data);
if ((*in)[i]->issuerAndSerialNumber.data != NULL)
free((*in)[i]->issuerAndSerialNumber.data);
if ((*in)[i]->subjectKeyIdentifier.data != NULL)
free((*in)[i]->subjectKeyIdentifier.data);
free((*in)[i]);
i++;
}
free(*in);
}
void
free_krb5_trusted_ca(krb5_trusted_ca ***in)
{
int i = 0;
if (*in == NULL) return;
while ((*in)[i] != NULL) {
switch((*in)[i]->choice) {
case choice_trusted_cas_principalName:
break;
case choice_trusted_cas_caName:
if ((*in)[i]->u.caName.data != NULL)
free((*in)[i]->u.caName.data);
break;
case choice_trusted_cas_issuerAndSerial:
if ((*in)[i]->u.issuerAndSerial.data != NULL)
free((*in)[i]->u.issuerAndSerial.data);
break;
case choice_trusted_cas_UNKNOWN:
break;
}
free((*in)[i]);
i++;
}
free(*in);
}
void
free_krb5_typed_data(krb5_typed_data ***in)
{
int i = 0;
if (*in == NULL) return;
while ((*in)[i] != NULL) {
if ((*in)[i]->data != NULL)
free((*in)[i]->data);
free((*in)[i]);
i++;
}
free(*in);
}
void
free_krb5_algorithm_identifier(krb5_algorithm_identifier *in)
{
if (in == NULL)
return;
if (in->algorithm.data != NULL)
free(in->algorithm.data);
if (in->parameters.data != NULL)
free(in->parameters.data);
free(in);
}
void
free_krb5_algorithm_identifiers(krb5_algorithm_identifier ***in)
{
int i;
if (in == NULL || *in == NULL)
return;
for (i = 0; (*in)[i] != NULL; i++) {
free_krb5_algorithm_identifier((*in)[i]);
}
free(*in);
}
void
free_krb5_subject_pk_info(krb5_subject_pk_info **in)
{
if ((*in) == NULL) return;
if ((*in)->algorithm.parameters.data != NULL)
free((*in)->algorithm.parameters.data);
if ((*in)->subjectPublicKey.data != NULL)
free((*in)->subjectPublicKey.data);
free(*in);
}
void
free_krb5_kdc_dh_key_info(krb5_kdc_dh_key_info **in)
{
if (*in == NULL) return;
if ((*in)->subjectPublicKey.data != NULL)
free((*in)->subjectPublicKey.data);
free(*in);
}
void
init_krb5_pa_pk_as_req(krb5_pa_pk_as_req **in)
{
(*in) = malloc(sizeof(krb5_pa_pk_as_req));
if ((*in) == NULL) return;
(*in)->signedAuthPack.data = NULL;
(*in)->signedAuthPack.length = 0;
(*in)->trustedCertifiers = NULL;
(*in)->kdcPkId.data = NULL;
(*in)->kdcPkId.length = 0;
}
void
init_krb5_pa_pk_as_req_draft9(krb5_pa_pk_as_req_draft9 **in)
{
(*in) = malloc(sizeof(krb5_pa_pk_as_req_draft9));
if ((*in) == NULL) return;
(*in)->signedAuthPack.data = NULL;
(*in)->signedAuthPack.length = 0;
(*in)->trustedCertifiers = NULL;
(*in)->kdcCert.data = NULL;
(*in)->kdcCert.length = 0;
(*in)->encryptionCert.data = NULL;
(*in)->encryptionCert.length = 0;
}
void
init_krb5_reply_key_pack(krb5_reply_key_pack **in)
{
(*in) = malloc(sizeof(krb5_reply_key_pack));
if ((*in) == NULL) return;
(*in)->replyKey.contents = NULL;
(*in)->replyKey.length = 0;
(*in)->asChecksum.contents = NULL;
(*in)->asChecksum.length = 0;
}
void
init_krb5_reply_key_pack_draft9(krb5_reply_key_pack_draft9 **in)
{
(*in) = malloc(sizeof(krb5_reply_key_pack_draft9));
if ((*in) == NULL) return;
(*in)->replyKey.contents = NULL;
(*in)->replyKey.length = 0;
}
void
init_krb5_auth_pack(krb5_auth_pack **in)
{
(*in) = malloc(sizeof(krb5_auth_pack));
if ((*in) == NULL) return;
(*in)->clientPublicValue = NULL;
(*in)->supportedCMSTypes = NULL;
(*in)->clientDHNonce.length = 0;
(*in)->clientDHNonce.data = NULL;
(*in)->pkAuthenticator.paChecksum.contents = NULL;
}
void
init_krb5_auth_pack_draft9(krb5_auth_pack_draft9 **in)
{
(*in) = malloc(sizeof(krb5_auth_pack_draft9));
if ((*in) == NULL) return;
(*in)->clientPublicValue = NULL;
}
void
init_krb5_pa_pk_as_rep(krb5_pa_pk_as_rep **in)
{
(*in) = malloc(sizeof(krb5_pa_pk_as_rep));
if ((*in) == NULL) return;
(*in)->u.dh_Info.serverDHNonce.length = 0;
(*in)->u.dh_Info.serverDHNonce.data = NULL;
(*in)->u.dh_Info.dhSignedData.length = 0;
(*in)->u.dh_Info.dhSignedData.data = NULL;
(*in)->u.encKeyPack.length = 0;
(*in)->u.encKeyPack.data = NULL;
}
void
init_krb5_pa_pk_as_rep_draft9(krb5_pa_pk_as_rep_draft9 **in)
{
(*in) = malloc(sizeof(krb5_pa_pk_as_rep_draft9));
if ((*in) == NULL) return;
(*in)->u.dhSignedData.length = 0;
(*in)->u.dhSignedData.data = NULL;
(*in)->u.encKeyPack.length = 0;
(*in)->u.encKeyPack.data = NULL;
}
void
init_krb5_typed_data(krb5_typed_data **in)
{
(*in) = malloc(sizeof(krb5_typed_data));
if ((*in) == NULL) return;
(*in)->type = 0;
(*in)->length = 0;
(*in)->data = NULL;
}
void
init_krb5_subject_pk_info(krb5_subject_pk_info **in)
{
(*in) = malloc(sizeof(krb5_subject_pk_info));
if ((*in) == NULL) return;
(*in)->algorithm.parameters.data = NULL;
(*in)->algorithm.parameters.length = 0;
(*in)->subjectPublicKey.data = NULL;
(*in)->subjectPublicKey.length = 0;
}
krb5_error_code
pkinit_copy_krb5_octet_data(krb5_octet_data *dst, const krb5_octet_data *src)
{
if (dst == NULL || src == NULL)
return EINVAL;
if (src->data == NULL) {
dst->data = NULL;
dst->length = 0;
return 0;
}
dst->data = malloc(src->length);
if (dst->data == NULL)
return ENOMEM;
(void) memcpy(dst->data, src->data, src->length);
dst->length = src->length;
return 0;
}
/* debugging functions */
void
print_buffer(unsigned char *buf, unsigned int len)
{
int i = 0;
/* Solaris Kerberos: len is unsigned (lint) */
if (len == 0)
return;
for (i = 0; i < len; i++)
pkiDebug("%02x ", buf[i]);
pkiDebug("\n");
}
void
print_buffer_bin(unsigned char *buf, unsigned int len, char *filename)
{
FILE *f = NULL;
int i = 0;
/* Solaris Kerberos: len is unsigned (lint) */
if (len == 0 || filename == NULL)
return;
if ((f = fopen(filename, "w")) == NULL)
return;
for (i = 0; i < len; i++)
(void) fputc(buf[i], f);
(void) fclose(f);
}