diff options
Diffstat (limited to 'crypto/heimdal/lib/gssapi/krb5/8003.c')
| -rw-r--r-- | crypto/heimdal/lib/gssapi/krb5/8003.c | 248 |
1 files changed, 0 insertions, 248 deletions
diff --git a/crypto/heimdal/lib/gssapi/krb5/8003.c b/crypto/heimdal/lib/gssapi/krb5/8003.c deleted file mode 100644 index 619cbf9..0000000 --- a/crypto/heimdal/lib/gssapi/krb5/8003.c +++ /dev/null @@ -1,248 +0,0 @@ -/* - * Copyright (c) 1997 - 2003 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 "krb5/gsskrb5_locl.h" - -RCSID("$Id: 8003.c 18334 2006-10-07 22:16:04Z lha $"); - -krb5_error_code -_gsskrb5_encode_om_uint32(OM_uint32 n, u_char *p) -{ - p[0] = (n >> 0) & 0xFF; - p[1] = (n >> 8) & 0xFF; - p[2] = (n >> 16) & 0xFF; - p[3] = (n >> 24) & 0xFF; - return 0; -} - -krb5_error_code -_gsskrb5_encode_be_om_uint32(OM_uint32 n, u_char *p) -{ - p[0] = (n >> 24) & 0xFF; - p[1] = (n >> 16) & 0xFF; - p[2] = (n >> 8) & 0xFF; - p[3] = (n >> 0) & 0xFF; - return 0; -} - -krb5_error_code -_gsskrb5_decode_om_uint32(const void *ptr, OM_uint32 *n) -{ - const u_char *p = ptr; - *n = (p[0] << 0) | (p[1] << 8) | (p[2] << 16) | (p[3] << 24); - return 0; -} - -krb5_error_code -_gsskrb5_decode_be_om_uint32(const void *ptr, OM_uint32 *n) -{ - const u_char *p = ptr; - *n = (p[0] <<24) | (p[1] << 16) | (p[2] << 8) | (p[3] << 0); - return 0; -} - -static krb5_error_code -hash_input_chan_bindings (const gss_channel_bindings_t b, - u_char *p) -{ - u_char num[4]; - MD5_CTX md5; - - MD5_Init(&md5); - _gsskrb5_encode_om_uint32 (b->initiator_addrtype, num); - MD5_Update (&md5, num, sizeof(num)); - _gsskrb5_encode_om_uint32 (b->initiator_address.length, num); - MD5_Update (&md5, num, sizeof(num)); - if (b->initiator_address.length) - MD5_Update (&md5, - b->initiator_address.value, - b->initiator_address.length); - _gsskrb5_encode_om_uint32 (b->acceptor_addrtype, num); - MD5_Update (&md5, num, sizeof(num)); - _gsskrb5_encode_om_uint32 (b->acceptor_address.length, num); - MD5_Update (&md5, num, sizeof(num)); - if (b->acceptor_address.length) - MD5_Update (&md5, - b->acceptor_address.value, - b->acceptor_address.length); - _gsskrb5_encode_om_uint32 (b->application_data.length, num); - MD5_Update (&md5, num, sizeof(num)); - if (b->application_data.length) - MD5_Update (&md5, - b->application_data.value, - b->application_data.length); - MD5_Final (p, &md5); - return 0; -} - -/* - * create a checksum over the chanel bindings in - * `input_chan_bindings', `flags' and `fwd_data' and return it in - * `result' - */ - -OM_uint32 -_gsskrb5_create_8003_checksum ( - OM_uint32 *minor_status, - const gss_channel_bindings_t input_chan_bindings, - OM_uint32 flags, - const krb5_data *fwd_data, - Checksum *result) -{ - u_char *p; - - /* - * see rfc1964 (section 1.1.1 (Initial Token), and the checksum value - * field's format) */ - result->cksumtype = CKSUMTYPE_GSSAPI; - if (fwd_data->length > 0 && (flags & GSS_C_DELEG_FLAG)) - result->checksum.length = 24 + 4 + fwd_data->length; - else - result->checksum.length = 24; - result->checksum.data = malloc (result->checksum.length); - if (result->checksum.data == NULL) { - *minor_status = ENOMEM; - return GSS_S_FAILURE; - } - - p = result->checksum.data; - _gsskrb5_encode_om_uint32 (16, p); - p += 4; - if (input_chan_bindings == GSS_C_NO_CHANNEL_BINDINGS) { - memset (p, 0, 16); - } else { - hash_input_chan_bindings (input_chan_bindings, p); - } - p += 16; - _gsskrb5_encode_om_uint32 (flags, p); - p += 4; - - if (fwd_data->length > 0 && (flags & GSS_C_DELEG_FLAG)) { - - *p++ = (1 >> 0) & 0xFF; /* DlgOpt */ /* == 1 */ - *p++ = (1 >> 8) & 0xFF; /* DlgOpt */ /* == 0 */ - *p++ = (fwd_data->length >> 0) & 0xFF; /* Dlgth */ - *p++ = (fwd_data->length >> 8) & 0xFF; /* Dlgth */ - memcpy(p, (unsigned char *) fwd_data->data, fwd_data->length); - - p += fwd_data->length; - } - - return GSS_S_COMPLETE; -} - -/* - * verify the checksum in `cksum' over `input_chan_bindings' - * returning `flags' and `fwd_data' - */ - -OM_uint32 -_gsskrb5_verify_8003_checksum( - OM_uint32 *minor_status, - const gss_channel_bindings_t input_chan_bindings, - const Checksum *cksum, - OM_uint32 *flags, - krb5_data *fwd_data) -{ - unsigned char hash[16]; - unsigned char *p; - OM_uint32 length; - int DlgOpt; - static unsigned char zeros[16]; - - if (cksum == NULL) { - *minor_status = 0; - return GSS_S_BAD_BINDINGS; - } - - /* XXX should handle checksums > 24 bytes */ - if(cksum->cksumtype != CKSUMTYPE_GSSAPI || cksum->checksum.length < 24) { - *minor_status = 0; - return GSS_S_BAD_BINDINGS; - } - - p = cksum->checksum.data; - _gsskrb5_decode_om_uint32(p, &length); - if(length != sizeof(hash)) { - *minor_status = 0; - return GSS_S_BAD_BINDINGS; - } - - p += 4; - - if (input_chan_bindings != GSS_C_NO_CHANNEL_BINDINGS - && memcmp(p, zeros, sizeof(zeros)) != 0) { - if(hash_input_chan_bindings(input_chan_bindings, hash) != 0) { - *minor_status = 0; - return GSS_S_BAD_BINDINGS; - } - if(memcmp(hash, p, sizeof(hash)) != 0) { - *minor_status = 0; - return GSS_S_BAD_BINDINGS; - } - } - - p += sizeof(hash); - - _gsskrb5_decode_om_uint32(p, flags); - p += 4; - - if (cksum->checksum.length > 24 && (*flags & GSS_C_DELEG_FLAG)) { - if(cksum->checksum.length < 28) { - *minor_status = 0; - return GSS_S_BAD_BINDINGS; - } - - DlgOpt = (p[0] << 0) | (p[1] << 8); - p += 2; - if (DlgOpt != 1) { - *minor_status = 0; - return GSS_S_BAD_BINDINGS; - } - - fwd_data->length = (p[0] << 0) | (p[1] << 8); - p += 2; - if(cksum->checksum.length < 28 + fwd_data->length) { - *minor_status = 0; - return GSS_S_BAD_BINDINGS; - } - fwd_data->data = malloc(fwd_data->length); - if (fwd_data->data == NULL) { - *minor_status = ENOMEM; - return GSS_S_FAILURE; - } - memcpy(fwd_data->data, p, fwd_data->length); - } - - return GSS_S_COMPLETE; -} |
