From 3c1e780ec7e16dc6667402bbc65708bf9a5c062f Mon Sep 17 00:00:00 2001 From: Andrew Bartlett Date: Tue, 7 Nov 2006 06:59:56 +0000 Subject: r19604: This is a massive commit, and I appologise in advance for it's size. This merges Samba4 with lorikeet-heimdal, which itself has been tracking Heimdal CVS for the past couple of weeks. This is such a big change because Heimdal reorganised it's internal structures, with the mechglue merge, and because many of our 'wishes' have been granted: we now have DCE_STYLE GSSAPI, send_to_kdc hooks and many other features merged into the mainline code. We have adapted to upstream's choice of API in these cases. In gensec_gssapi and gensec_krb5, we either expect a valid PAC, or NO PAC. This matches windows behavour. We also have an option to require the PAC to be present (which allows us to automate the testing of this code). This also includes a restructure of how the kerberos dependencies are handled, due to the fallout of the merge. Andrew Bartlett (This used to be commit 4826f1735197c2a471d771495e6d4c1051b4c471) --- source4/heimdal/lib/gssapi/krb5/decapsulate.c | 209 ++++++++++++++++++++++++++ 1 file changed, 209 insertions(+) create mode 100644 source4/heimdal/lib/gssapi/krb5/decapsulate.c (limited to 'source4/heimdal/lib/gssapi/krb5/decapsulate.c') diff --git a/source4/heimdal/lib/gssapi/krb5/decapsulate.c b/source4/heimdal/lib/gssapi/krb5/decapsulate.c new file mode 100644 index 0000000000..eadec1ef03 --- /dev/null +++ b/source4/heimdal/lib/gssapi/krb5/decapsulate.c @@ -0,0 +1,209 @@ +/* + * 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 "krb5/gsskrb5_locl.h" + +RCSID("$Id: decapsulate.c,v 1.16 2006/10/07 22:14:26 lha Exp $"); + +/* + * return the length of the mechanism in token or -1 + * (which implies that the token was bad - GSS_S_DEFECTIVE_TOKEN + */ + +ssize_t +_gsskrb5_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, + gss_OID mech) +{ + const u_char *p; + ssize_t mech_len; + + mech_len = _gsskrb5_get_mech (*str, total_len, &p); + if (mech_len < 0) + return GSS_S_DEFECTIVE_TOKEN; + + if (mech_len != mech->length) + return GSS_S_BAD_MECH; + if (memcmp(p, + mech->elements, + mech->length) != 0) + return GSS_S_BAD_MECH; + p += mech_len; + *str = rk_UNCONST(p); + return GSS_S_COMPLETE; +} + +OM_uint32 +_gsskrb5_verify_header(u_char **str, + size_t total_len, + const void *type, + gss_OID oid) +{ + OM_uint32 ret; + size_t len; + u_char *p = *str; + + ret = _gssapi_verify_mech_header(str, total_len, oid); + if (ret) + return ret; + + len = total_len - (*str - p); + + if (len < 2) + return GSS_S_DEFECTIVE_TOKEN; + + if (memcmp (*str, type, 2) != 0) + return GSS_S_DEFECTIVE_TOKEN; + *str += 2; + + return 0; +} + +/* + * Remove the GSS-API wrapping from `in_token' giving `out_data. + * Does not copy data, so just free `in_token'. + */ + +OM_uint32 +_gssapi_decapsulate( + OM_uint32 *minor_status, + gss_buffer_t input_token_buffer, + krb5_data *out_data, + const gss_OID mech +) +{ + u_char *p; + OM_uint32 ret; + + p = input_token_buffer->value; + ret = _gssapi_verify_mech_header(&p, + input_token_buffer->length, + mech); + 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; +} + +/* + * Remove the GSS-API wrapping from `in_token' giving `out_data. + * Does not copy data, so just free `in_token'. + */ + +OM_uint32 +_gsskrb5_decapsulate(OM_uint32 *minor_status, + gss_buffer_t input_token_buffer, + krb5_data *out_data, + const void *type, + gss_OID oid) +{ + u_char *p; + OM_uint32 ret; + + p = input_token_buffer->value; + ret = _gsskrb5_verify_header(&p, + input_token_buffer->length, + type, + oid); + 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; +} -- cgit From 91adebe749beb0dc23cacaea316cb2b724776aad Mon Sep 17 00:00:00 2001 From: Andrew Bartlett Date: Wed, 13 Jun 2007 05:44:24 +0000 Subject: r23456: Update Samba4 to current lorikeet-heimdal. Andrew Bartlett (This used to be commit ae0f81ab235c72cceb120bcdeb051a483cf3cc4f) --- source4/heimdal/lib/gssapi/krb5/decapsulate.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'source4/heimdal/lib/gssapi/krb5/decapsulate.c') diff --git a/source4/heimdal/lib/gssapi/krb5/decapsulate.c b/source4/heimdal/lib/gssapi/krb5/decapsulate.c index eadec1ef03..39176faff4 100644 --- a/source4/heimdal/lib/gssapi/krb5/decapsulate.c +++ b/source4/heimdal/lib/gssapi/krb5/decapsulate.c @@ -33,7 +33,7 @@ #include "krb5/gsskrb5_locl.h" -RCSID("$Id: decapsulate.c,v 1.16 2006/10/07 22:14:26 lha Exp $"); +RCSID("$Id: decapsulate.c 18334 2006-10-07 22:16:04Z lha $"); /* * return the length of the mechanism in token or -1 -- cgit From 243321b4bbe273cf3a9105ca132caa2b53e2f263 Mon Sep 17 00:00:00 2001 From: Stefan Metzmacher Date: Tue, 26 Aug 2008 19:35:52 +0200 Subject: heimdal: import heimdal's trunk svn rev 23697 + lorikeet-heimdal patches This is based on f56a3b1846c7d462542f2e9527f4d0ed8a34748d in my heimdal-wip repo. metze (This used to be commit 467a1f2163a63cdf1a4c83a69473db50e8794f53) --- source4/heimdal/lib/gssapi/krb5/decapsulate.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'source4/heimdal/lib/gssapi/krb5/decapsulate.c') diff --git a/source4/heimdal/lib/gssapi/krb5/decapsulate.c b/source4/heimdal/lib/gssapi/krb5/decapsulate.c index 39176faff4..419e61a436 100644 --- a/source4/heimdal/lib/gssapi/krb5/decapsulate.c +++ b/source4/heimdal/lib/gssapi/krb5/decapsulate.c @@ -33,7 +33,7 @@ #include "krb5/gsskrb5_locl.h" -RCSID("$Id: decapsulate.c 18334 2006-10-07 22:16:04Z lha $"); +RCSID("$Id$"); /* * return the length of the mechanism in token or -1 -- cgit