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34 * Serialise a security context. On the acceptor, this may be partially
38 #include "gssapiP_eap.h"
40 #ifdef GSSEAP_ENABLE_ACCEPTOR
42 gssEapExportPartialContext(OM_uint32 *minor,
46 OM_uint32 major, tmpMinor;
47 size_t length, serverLen = 0;
49 char serverBuf[MAXHOSTNAMELEN];
51 if (ctx->acceptorCtx.radConn != NULL) {
52 if (rs_conn_get_current_peer(ctx->acceptorCtx.radConn,
53 serverBuf, sizeof(serverBuf)) != 0) {
55 return gssEapRadiusMapError(minor,
56 rs_err_conn_pop(ctx->acceptorCtx.radConn));
58 serverBuf[0] = '\0'; /* not implemented yet */
61 serverLen = strlen(serverBuf);
64 length = 4 + serverLen + 4 + ctx->acceptorCtx.state.length;
66 token->value = GSSEAP_MALLOC(length);
67 if (token->value == NULL) {
68 major = GSS_S_FAILURE;
72 token->length = length;
74 p = (unsigned char *)token->value;
76 store_uint32_be(serverLen, p);
79 memcpy(p, serverBuf, serverLen);
83 store_uint32_be(ctx->acceptorCtx.state.length, p);
85 if (ctx->acceptorCtx.state.length != 0) {
86 memcpy(p, ctx->acceptorCtx.state.value,
87 ctx->acceptorCtx.state.length);
88 p += ctx->acceptorCtx.state.length;
91 assert(p == (unsigned char *)token->value + token->length);
93 major = GSS_S_COMPLETE;
98 gss_release_buffer(&tmpMinor, token);
102 #endif /* GSSEAP_ENABLE_ACCEPTOR */
105 gssEapExportSecContext(OM_uint32 *minor,
109 OM_uint32 major, tmpMinor;
111 gss_buffer_desc initiatorName = GSS_C_EMPTY_BUFFER;
112 gss_buffer_desc acceptorName = GSS_C_EMPTY_BUFFER;
113 gss_buffer_desc partialCtx = GSS_C_EMPTY_BUFFER;
117 if ((CTX_IS_INITIATOR(ctx) && !CTX_IS_ESTABLISHED(ctx)) ||
118 ctx->mechanismUsed == GSS_C_NO_OID) {
119 *minor = GSSEAP_CONTEXT_INCOMPLETE;
120 return GSS_S_NO_CONTEXT;
123 key.length = KRB_KEY_LENGTH(&ctx->rfc3961Key);
124 key.value = KRB_KEY_DATA(&ctx->rfc3961Key);
126 if (ctx->initiatorName != GSS_C_NO_NAME) {
127 major = gssEapExportNameInternal(minor, ctx->initiatorName,
129 EXPORT_NAME_FLAG_COMPOSITE);
130 if (GSS_ERROR(major))
134 if (ctx->acceptorName != GSS_C_NO_NAME) {
135 major = gssEapExportNameInternal(minor, ctx->acceptorName,
137 EXPORT_NAME_FLAG_COMPOSITE);
138 if (GSS_ERROR(major))
142 #ifdef GSSEAP_ENABLE_ACCEPTOR
144 * The partial context is only transmitted for unestablished acceptor
147 if (!CTX_IS_INITIATOR(ctx) && !CTX_IS_ESTABLISHED(ctx) &&
148 (ctx->flags & CTX_FLAG_KRB_REAUTH) == 0) {
149 major = gssEapExportPartialContext(minor, ctx, &partialCtx);
150 if (GSS_ERROR(major))
155 length = 16; /* version, state, flags, */
156 length += 4 + ctx->mechanismUsed->length; /* mechanismUsed */
157 length += 12 + key.length; /* rfc3961Key.value */
158 length += 4 + initiatorName.length; /* initiatorName.value */
159 length += 4 + acceptorName.length; /* acceptorName.value */
160 length += 24 + sequenceSize(ctx->seqState); /* seqState */
162 if (partialCtx.value != NULL)
163 length += 4 + partialCtx.length; /* partialCtx.value */
165 token->value = GSSEAP_MALLOC(length);
166 if (token->value == NULL) {
167 major = GSS_S_FAILURE;
171 token->length = length;
173 p = (unsigned char *)token->value;
175 store_uint32_be(EAP_EXPORT_CONTEXT_V1, &p[0]); /* version */
176 store_uint32_be(GSSEAP_SM_STATE(ctx), &p[4]);
177 store_uint32_be(ctx->flags, &p[8]);
178 store_uint32_be(ctx->gssFlags, &p[12]);
179 p = store_oid(ctx->mechanismUsed, &p[16]);
181 store_uint32_be(ctx->checksumType, &p[0]);
182 store_uint32_be(ctx->encryptionType, &p[4]);
183 p = store_buffer(&key, &p[8], FALSE);
185 p = store_buffer(&initiatorName, p, FALSE);
186 p = store_buffer(&acceptorName, p, FALSE);
188 store_uint64_be(ctx->expiryTime, &p[0]);
189 store_uint64_be(ctx->sendSeq, &p[8]);
190 store_uint64_be(ctx->recvSeq, &p[16]);
193 major = sequenceExternalize(minor, ctx->seqState, &p, &length);
194 if (GSS_ERROR(major))
197 if (partialCtx.value != NULL)
198 p = store_buffer(&partialCtx, p, FALSE);
200 assert(p == (unsigned char *)token->value + token->length);
202 major = GSS_S_COMPLETE;
206 if (GSS_ERROR(major))
207 gss_release_buffer(&tmpMinor, token);
208 gss_release_buffer(&tmpMinor, &initiatorName);
209 gss_release_buffer(&tmpMinor, &acceptorName);
210 gss_release_buffer(&tmpMinor, &partialCtx);
215 OM_uint32 GSSAPI_CALLCONV
216 gss_export_sec_context(OM_uint32 *minor,
217 gss_ctx_id_t *context_handle,
218 gss_buffer_t interprocess_token)
220 OM_uint32 major, tmpMinor;
221 gss_ctx_id_t ctx = *context_handle;
223 interprocess_token->length = 0;
224 interprocess_token->value = NULL;
226 if (ctx == GSS_C_NO_CONTEXT) {
228 return GSS_S_CALL_INACCESSIBLE_READ | GSS_S_NO_CONTEXT;
233 GSSEAP_MUTEX_LOCK(&ctx->mutex);
235 major = gssEapExportSecContext(minor, ctx, interprocess_token);
236 if (GSS_ERROR(major)) {
237 GSSEAP_MUTEX_UNLOCK(&ctx->mutex);
241 *context_handle = GSS_C_NO_CONTEXT;
243 GSSEAP_MUTEX_UNLOCK(&ctx->mutex);
245 gssEapReleaseContext(&tmpMinor, &ctx);
247 return GSS_S_COMPLETE;