diff options
Diffstat (limited to 'crypto/heimdal/lib/gssapi/decapsulate.c')
| -rw-r--r-- | crypto/heimdal/lib/gssapi/decapsulate.c | 184 |
1 files changed, 0 insertions, 184 deletions
diff --git a/crypto/heimdal/lib/gssapi/decapsulate.c b/crypto/heimdal/lib/gssapi/decapsulate.c deleted file mode 100644 index 2425453..0000000 --- a/crypto/heimdal/lib/gssapi/decapsulate.c +++ /dev/null @@ -1,184 +0,0 @@ -/* - * Copyright (c) 1997 - 2001 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 "gssapi_locl.h" - -RCSID("$Id: decapsulate.c,v 1.7.6.1 2003/09/18 22:00:41 lha Exp $"); - -OM_uint32 -gssapi_krb5_verify_header(u_char **str, - size_t total_len, - char *type) -{ - size_t len, len_len, mech_len, foo; - int e; - u_char *p = *str; - - if (total_len < 1) - return GSS_S_DEFECTIVE_TOKEN; - if (*p++ != 0x60) - return GSS_S_DEFECTIVE_TOKEN; - e = der_get_length (p, total_len - 1, &len, &len_len); - if (e || 1 + len_len + len != total_len) - return GSS_S_DEFECTIVE_TOKEN; - p += len_len; - if (*p++ != 0x06) - return GSS_S_DEFECTIVE_TOKEN; - e = der_get_length (p, total_len - 1 - len_len - 1, - &mech_len, &foo); - if (e) - return GSS_S_DEFECTIVE_TOKEN; - p += foo; - if (mech_len != GSS_KRB5_MECHANISM->length) - return GSS_S_BAD_MECH; - if (memcmp(p, - GSS_KRB5_MECHANISM->elements, - GSS_KRB5_MECHANISM->length) != 0) - return GSS_S_BAD_MECH; - p += mech_len; - if (memcmp (p, type, 2) != 0) - return GSS_S_DEFECTIVE_TOKEN; - p += 2; - *str = p; - return GSS_S_COMPLETE; -} - -static ssize_t -gssapi_krb5_get_mech (const u_char *ptr, - size_t total_len, - const u_char **mech_ret) -{ - size_t len, len_len, mech_len, foo; - const u_char *p = ptr; - int e; - - if (total_len < 1) - return -1; - if (*p++ != 0x60) - return -1; - e = der_get_length (p, total_len - 1, &len, &len_len); - if (e || 1 + len_len + len != total_len) - return -1; - p += len_len; - if (*p++ != 0x06) - return -1; - e = der_get_length (p, total_len - 1 - len_len - 1, - &mech_len, &foo); - if (e) - return -1; - p += foo; - *mech_ret = p; - return mech_len; -} - -OM_uint32 -_gssapi_verify_mech_header(u_char **str, - size_t total_len) -{ - const u_char *p; - ssize_t mech_len; - - mech_len = gssapi_krb5_get_mech (*str, total_len, &p); - if (mech_len < 0) - return GSS_S_DEFECTIVE_TOKEN; - - if (mech_len != GSS_KRB5_MECHANISM->length) - return GSS_S_BAD_MECH; - if (memcmp(p, - GSS_KRB5_MECHANISM->elements, - GSS_KRB5_MECHANISM->length) != 0) - return GSS_S_BAD_MECH; - p += mech_len; - *str = (char *)p; - return GSS_S_COMPLETE; -} - -/* - * Remove the GSS-API wrapping from `in_token' giving `out_data. - * Does not copy data, so just free `in_token'. - */ - -OM_uint32 -gssapi_krb5_decapsulate( - OM_uint32 *minor_status, - gss_buffer_t input_token_buffer, - krb5_data *out_data, - char *type -) -{ - u_char *p; - OM_uint32 ret; - - p = input_token_buffer->value; - ret = gssapi_krb5_verify_header(&p, - input_token_buffer->length, - type); - if (ret) { - *minor_status = 0; - return ret; - } - - out_data->length = input_token_buffer->length - - (p - (u_char *)input_token_buffer->value); - out_data->data = p; - return GSS_S_COMPLETE; -} - -/* - * Verify padding of a gss wrapped message and return its length. - */ - -OM_uint32 -_gssapi_verify_pad(gss_buffer_t wrapped_token, - size_t datalen, - size_t *padlen) -{ - u_char *pad; - size_t padlength; - int i; - - pad = (u_char *)wrapped_token->value + wrapped_token->length - 1; - padlength = *pad; - - if (padlength > datalen) - return GSS_S_BAD_MECH; - - for (i = padlength; i > 0 && *pad == padlength; i--, pad--) - ; - if (i != 0) - return GSS_S_BAD_MIC; - - *padlen = padlength; - - return 0; -} |
