2 * Copyright (c) 2010, JANET(UK)
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of JANET(UK) nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 #include "gssapiP_eap.h"
36 gssEapExportPartialContext(OM_uint32 *minor,
40 return duplicateBuffer(minor, &ctx->acceptorCtx.state, token);
44 gssEapExportSecContext(OM_uint32 *minor,
48 OM_uint32 major, tmpMinor;
50 gss_buffer_desc initiatorName = GSS_C_EMPTY_BUFFER;
51 gss_buffer_desc acceptorName = GSS_C_EMPTY_BUFFER;
52 gss_buffer_desc partialCtx = GSS_C_EMPTY_BUFFER;
56 if ((CTX_IS_INITIATOR(ctx) && !CTX_IS_ESTABLISHED(ctx)) ||
57 ctx->mechanismUsed == GSS_C_NO_OID)
58 return GSS_S_NO_CONTEXT;
60 key.length = KRB_KEY_LENGTH(&ctx->rfc3961Key);
61 key.value = KRB_KEY_DATA(&ctx->rfc3961Key);
63 if (ctx->initiatorName != GSS_C_NO_NAME) {
64 major = gssEapExportNameInternal(minor, ctx->initiatorName,
66 EXPORT_NAME_FLAG_COMPOSITE);
70 if (ctx->acceptorName != GSS_C_NO_NAME) {
71 major = gssEapExportNameInternal(minor, ctx->acceptorName,
73 EXPORT_NAME_FLAG_COMPOSITE);
79 * The partial context is only transmitted for unestablished acceptor
82 if (!CTX_IS_INITIATOR(ctx) && !CTX_IS_ESTABLISHED(ctx)) {
83 major = gssEapExportPartialContext(minor, ctx, &partialCtx);
88 length = 16; /* version, state, flags, etc */
89 length += 4 + ctx->mechanismUsed->length; /* mechanismUsed */
90 length += 12 + key.length; /* rfc3961Key.value */
91 length += 4 + initiatorName.length; /* initiatorName.value */
92 length += 4 + acceptorName.length; /* acceptorName.value */
93 length += 24 + sequenceSize(ctx->seqState); /* seqState */
95 if (partialCtx.value != NULL)
96 length += 4 + partialCtx.length; /* partialCtx.value */
98 token->value = GSSEAP_MALLOC(length);
99 if (token->value == NULL) {
101 major = GSS_S_FAILURE;
104 token->length = length;
106 p = (unsigned char *)token->value;
108 store_uint32_be(EAP_EXPORT_CONTEXT_V1, &p[0]); /* version */
109 store_uint32_be(ctx->state, &p[4]);
110 store_uint32_be(ctx->flags, &p[8]);
111 store_uint32_be(ctx->gssFlags, &p[12]);
112 p = store_oid(ctx->mechanismUsed, &p[16]);
114 store_uint32_be(ctx->checksumType, &p[0]);
115 store_uint32_be(ctx->encryptionType, &p[4]);
116 p = store_buffer(&key, &p[8], FALSE);
118 p = store_buffer(&initiatorName, p, FALSE);
119 p = store_buffer(&acceptorName, p, FALSE);
121 store_uint64_be(ctx->expiryTime, &p[0]);
122 store_uint64_be(ctx->sendSeq, &p[8]);
123 store_uint64_be(ctx->recvSeq, &p[16]);
126 major = sequenceExternalize(minor, ctx->seqState, &p, &length);
127 if (GSS_ERROR(major))
130 if (partialCtx.value != NULL)
131 p = store_buffer(&partialCtx, p, FALSE);
133 assert(p == (unsigned char *)token->value + token->length);
135 major = GSS_S_COMPLETE;
139 if (GSS_ERROR(major))
140 gss_release_buffer(&tmpMinor, token);
141 gss_release_buffer(&tmpMinor, &initiatorName);
142 gss_release_buffer(&tmpMinor, &acceptorName);
143 gss_release_buffer(&tmpMinor, &partialCtx);
149 gss_export_sec_context(OM_uint32 *minor,
150 gss_ctx_id_t *context_handle,
151 gss_buffer_t interprocess_token)
153 OM_uint32 major, tmpMinor;
154 gss_ctx_id_t ctx = *context_handle;
156 interprocess_token->length = 0;
157 interprocess_token->value = NULL;
159 if (ctx == GSS_C_NO_CONTEXT)
160 return GSS_S_NO_CONTEXT;
162 GSSEAP_MUTEX_LOCK(&ctx->mutex);
164 major = gssEapExportSecContext(minor, ctx, interprocess_token);
165 if (GSS_ERROR(major)) {
166 GSSEAP_MUTEX_UNLOCK(&ctx->mutex);
170 *context_handle = GSS_C_NO_CONTEXT;
172 GSSEAP_MUTEX_UNLOCK(&ctx->mutex);
174 gssEapReleaseContext(&tmpMinor, &ctx);
176 return GSS_S_COMPLETE;