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34 * Serialise a security context. On the acceptor, this may be partially
38 #include "gssapiP_eap.h"
41 gssEapExportPartialContext(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) {
54 return gssEapRadiusMapError(minor,
55 rs_err_conn_pop(ctx->acceptorCtx.radConn));
57 serverBuf[0] = '\0'; /* not implemented yet */
60 serverLen = strlen(serverBuf);
63 length = 4 + serverLen + 4 + ctx->acceptorCtx.state.length;
65 token->value = GSSEAP_MALLOC(length);
66 if (token->value == NULL) {
67 major = GSS_S_FAILURE;
71 token->length = length;
73 p = (unsigned char *)token->value;
75 store_uint32_be(serverLen, p);
78 memcpy(p, serverBuf, serverLen);
82 store_uint32_be(ctx->acceptorCtx.state.length, p);
84 if (ctx->acceptorCtx.state.length != 0) {
85 memcpy(p, ctx->acceptorCtx.state.value,
86 ctx->acceptorCtx.state.length);
87 p += ctx->acceptorCtx.state.length;
90 assert(p == (unsigned char *)token->value + token->length);
92 major = GSS_S_COMPLETE;
97 gss_release_buffer(&tmpMinor, token);
103 gssEapExportSecContext(OM_uint32 *minor,
107 OM_uint32 major, tmpMinor;
109 gss_buffer_desc initiatorName = GSS_C_EMPTY_BUFFER;
110 gss_buffer_desc acceptorName = GSS_C_EMPTY_BUFFER;
111 gss_buffer_desc partialCtx = GSS_C_EMPTY_BUFFER;
115 if ((CTX_IS_INITIATOR(ctx) && !CTX_IS_ESTABLISHED(ctx)) ||
116 ctx->mechanismUsed == GSS_C_NO_OID) {
117 *minor = GSSEAP_CONTEXT_INCOMPLETE;
118 return GSS_S_NO_CONTEXT;
121 key.length = KRB_KEY_LENGTH(&ctx->rfc3961Key);
122 key.value = KRB_KEY_DATA(&ctx->rfc3961Key);
124 if (ctx->initiatorName != GSS_C_NO_NAME) {
125 major = gssEapExportNameInternal(minor, ctx->initiatorName,
127 EXPORT_NAME_FLAG_COMPOSITE);
128 if (GSS_ERROR(major))
132 if (ctx->acceptorName != GSS_C_NO_NAME) {
133 major = gssEapExportNameInternal(minor, ctx->acceptorName,
135 EXPORT_NAME_FLAG_COMPOSITE);
136 if (GSS_ERROR(major))
141 * The partial context is only transmitted for unestablished acceptor
144 if (!CTX_IS_INITIATOR(ctx) && !CTX_IS_ESTABLISHED(ctx) &&
145 (ctx->flags & CTX_FLAG_KRB_REAUTH) == 0) {
146 major = gssEapExportPartialContext(minor, ctx, &partialCtx);
147 if (GSS_ERROR(major))
151 length = 16; /* version, state, flags, */
152 length += 4 + ctx->mechanismUsed->length; /* mechanismUsed */
153 length += 12 + key.length; /* rfc3961Key.value */
154 length += 4 + initiatorName.length; /* initiatorName.value */
155 length += 4 + acceptorName.length; /* acceptorName.value */
156 length += 24 + sequenceSize(ctx->seqState); /* seqState */
158 if (partialCtx.value != NULL)
159 length += 4 + partialCtx.length; /* partialCtx.value */
161 token->value = GSSEAP_MALLOC(length);
162 if (token->value == NULL) {
163 major = GSS_S_FAILURE;
167 token->length = length;
169 p = (unsigned char *)token->value;
171 store_uint32_be(EAP_EXPORT_CONTEXT_V1, &p[0]); /* version */
172 store_uint32_be(GSSEAP_SM_STATE(ctx), &p[4]);
173 store_uint32_be(ctx->flags, &p[8]);
174 store_uint32_be(ctx->gssFlags, &p[12]);
175 p = store_oid(ctx->mechanismUsed, &p[16]);
177 store_uint32_be(ctx->checksumType, &p[0]);
178 store_uint32_be(ctx->encryptionType, &p[4]);
179 p = store_buffer(&key, &p[8], FALSE);
181 p = store_buffer(&initiatorName, p, FALSE);
182 p = store_buffer(&acceptorName, p, FALSE);
184 store_uint64_be(ctx->expiryTime, &p[0]);
185 store_uint64_be(ctx->sendSeq, &p[8]);
186 store_uint64_be(ctx->recvSeq, &p[16]);
189 major = sequenceExternalize(minor, ctx->seqState, &p, &length);
190 if (GSS_ERROR(major))
193 if (partialCtx.value != NULL)
194 p = store_buffer(&partialCtx, p, FALSE);
196 assert(p == (unsigned char *)token->value + token->length);
198 major = GSS_S_COMPLETE;
202 if (GSS_ERROR(major))
203 gss_release_buffer(&tmpMinor, token);
204 gss_release_buffer(&tmpMinor, &initiatorName);
205 gss_release_buffer(&tmpMinor, &acceptorName);
206 gss_release_buffer(&tmpMinor, &partialCtx);
211 OM_uint32 GSSAPI_CALLCONV
212 gss_export_sec_context(OM_uint32 *minor,
213 gss_ctx_id_t *context_handle,
214 gss_buffer_t interprocess_token)
216 OM_uint32 major, tmpMinor;
217 gss_ctx_id_t ctx = *context_handle;
219 interprocess_token->length = 0;
220 interprocess_token->value = NULL;
222 if (ctx == GSS_C_NO_CONTEXT) {
224 return GSS_S_CALL_INACCESSIBLE_READ | GSS_S_NO_CONTEXT;
229 GSSEAP_MUTEX_LOCK(&ctx->mutex);
231 major = gssEapExportSecContext(minor, ctx, interprocess_token);
232 if (GSS_ERROR(major)) {
233 GSSEAP_MUTEX_UNLOCK(&ctx->mutex);
237 *context_handle = GSS_C_NO_CONTEXT;
239 GSSEAP_MUTEX_UNLOCK(&ctx->mutex);
241 gssEapReleaseContext(&tmpMinor, &ctx);
243 return GSS_S_COMPLETE;