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34 * Serialise a security context. On the acceptor, this may be partially
38 #include "gssapiP_eap.h"
41 exportPartialRadiusContext(OM_uint32 *minor,
45 OM_uint32 major, tmpMinor;
46 size_t length, serverLen = 0;
48 char serverBuf[MAXHOSTNAMELEN];
50 if (ctx->acceptorCtx.radConn != NULL) {
51 if (rs_conn_get_current_peer(ctx->acceptorCtx.radConn,
52 serverBuf, sizeof(serverBuf)) != 0) {
53 return gssEapRadiusMapError(minor,
54 rs_err_conn_pop(ctx->acceptorCtx.radConn));
56 serverLen = strlen(serverBuf);
59 length = 4 + serverLen + 4 + ctx->acceptorCtx.state.length;
61 token->value = GSSEAP_MALLOC(length);
62 if (token->value == NULL) {
63 major = GSS_S_FAILURE;
67 token->length = length;
69 p = (unsigned char *)token->value;
71 store_uint32_be(serverLen, p);
74 memcpy(p, serverBuf, serverLen);
78 store_uint32_be(ctx->acceptorCtx.state.length, p);
80 if (ctx->acceptorCtx.state.length != 0) {
81 memcpy(p, ctx->acceptorCtx.state.value,
82 ctx->acceptorCtx.state.length);
83 p += ctx->acceptorCtx.state.length;
86 assert(p == (unsigned char *)token->value + token->length);
88 major = GSS_S_COMPLETE;
93 gss_release_buffer(&tmpMinor, token);
99 gssEapExportSecContext(OM_uint32 *minor,
103 OM_uint32 major, tmpMinor;
105 gss_buffer_desc initiatorName = GSS_C_EMPTY_BUFFER;
106 gss_buffer_desc acceptorName = GSS_C_EMPTY_BUFFER;
107 gss_buffer_desc partialCtx = GSS_C_EMPTY_BUFFER;
111 if ((CTX_IS_INITIATOR(ctx) && !CTX_IS_ESTABLISHED(ctx)) ||
112 ctx->mechanismUsed == GSS_C_NO_OID) {
113 *minor = GSSEAP_CONTEXT_INCOMPLETE;
114 return GSS_S_NO_CONTEXT;
117 key.length = KRB_KEY_LENGTH(&ctx->rfc3961Key);
118 key.value = KRB_KEY_DATA(&ctx->rfc3961Key);
120 if (ctx->initiatorName != GSS_C_NO_NAME) {
121 major = gssEapExportNameInternal(minor, ctx->initiatorName,
123 EXPORT_NAME_FLAG_COMPOSITE);
124 if (GSS_ERROR(major))
127 if (ctx->acceptorName != GSS_C_NO_NAME) {
128 major = gssEapExportNameInternal(minor, ctx->acceptorName,
130 EXPORT_NAME_FLAG_COMPOSITE);
131 if (GSS_ERROR(major))
136 * The partial context is only transmitted for unestablished acceptor
139 if (!CTX_IS_INITIATOR(ctx) &&
140 !CTX_IS_ESTABLISHED(ctx) &&
141 ((ctx->flags & CTX_FLAG_KRB_REAUTH) == 0)) {
142 major = exportPartialRadiusContext(minor, ctx, &partialCtx);
143 if (GSS_ERROR(major))
147 length = 16; /* version, state, flags, */
148 length += 4 + ctx->mechanismUsed->length; /* mechanismUsed */
149 length += 12 + key.length; /* rfc3961Key.value */
150 length += 4 + initiatorName.length; /* initiatorName.value */
151 length += 4 + acceptorName.length; /* acceptorName.value */
152 length += 24 + sequenceSize(ctx->seqState); /* seqState */
154 if (!CTX_IS_INITIATOR(ctx) && !CTX_IS_ESTABLISHED(ctx))
155 length += 4 + ctx->conversation.length;
157 if (partialCtx.value != NULL)
158 length += 4 + partialCtx.length; /* partialCtx.value */
160 token->value = GSSEAP_MALLOC(length);
161 if (token->value == NULL) {
162 major = GSS_S_FAILURE;
166 token->length = length;
168 p = (unsigned char *)token->value;
170 store_uint32_be(EAP_EXPORT_CONTEXT_V1, &p[0]); /* version */
171 store_uint32_be(GSSEAP_SM_STATE(ctx), &p[4]);
172 store_uint32_be(ctx->flags, &p[8]);
173 store_uint32_be(ctx->gssFlags, &p[12]);
174 p = store_oid(ctx->mechanismUsed, &p[16]);
176 store_uint32_be(ctx->checksumType, &p[0]);
177 store_uint32_be(ctx->encryptionType, &p[4]);
178 p = store_buffer(&key, &p[8], FALSE);
180 p = store_buffer(&initiatorName, p, FALSE);
181 p = store_buffer(&acceptorName, p, FALSE);
183 store_uint64_be(ctx->expiryTime, &p[0]);
184 store_uint64_be(ctx->sendSeq, &p[8]);
185 store_uint64_be(ctx->recvSeq, &p[16]);
188 major = sequenceExternalize(minor, ctx->seqState, &p, &length);
189 if (GSS_ERROR(major))
192 if (!CTX_IS_INITIATOR(ctx) && !CTX_IS_ESTABLISHED(ctx))
193 p = store_buffer(&ctx->conversation, &p, FALSE);
195 if (partialCtx.value != NULL)
196 p = store_buffer(&partialCtx, p, FALSE);
198 assert(p == (unsigned char *)token->value + token->length);
200 major = GSS_S_COMPLETE;
204 if (GSS_ERROR(major))
205 gss_release_buffer(&tmpMinor, token);
206 gss_release_buffer(&tmpMinor, &initiatorName);
207 gss_release_buffer(&tmpMinor, &acceptorName);
208 gss_release_buffer(&tmpMinor, &partialCtx);
214 gss_export_sec_context(OM_uint32 *minor,
215 gss_ctx_id_t *context_handle,
216 gss_buffer_t interprocess_token)
218 OM_uint32 major, tmpMinor;
219 gss_ctx_id_t ctx = *context_handle;
221 interprocess_token->length = 0;
222 interprocess_token->value = NULL;
224 if (ctx == GSS_C_NO_CONTEXT) {
226 return GSS_S_CALL_INACCESSIBLE_READ | GSS_S_NO_CONTEXT;
231 GSSEAP_MUTEX_LOCK(&ctx->mutex);
233 major = gssEapExportSecContext(minor, ctx, interprocess_token);
234 if (GSS_ERROR(major)) {
235 GSSEAP_MUTEX_UNLOCK(&ctx->mutex);
239 *context_handle = GSS_C_NO_CONTEXT;
241 GSSEAP_MUTEX_UNLOCK(&ctx->mutex);
243 gssEapReleaseContext(&tmpMinor, &ctx);
245 return GSS_S_COMPLETE;