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
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10 * notice, this list of conditions and the following disclaimer.
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14 * documentation and/or other materials provided with the distribution.
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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"
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23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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33 #include "gssapiP_eap.h"
36 gssEapAllocContext(OM_uint32 *minor,
42 assert(*pCtx == GSS_C_NO_CONTEXT);
44 ctx = (gss_ctx_id_t)GSSEAP_CALLOC(1, sizeof(*ctx));
50 if (GSSEAP_MUTEX_INIT(&ctx->mutex) != 0) {
52 gssEapReleaseContext(&tmpMinor, &ctx);
56 ctx->state = EAP_STATE_IDENTITY;
59 * Integrity, confidentiality, sequencing and replay detection are
60 * always available. Regardless of what flags are requested in
61 * GSS_Init_sec_context, implementations MUST set the flag corresponding
62 * to these services in the output of GSS_Init_sec_context and
63 * GSS_Accept_sec_context.
65 ctx->gssFlags = GSS_C_TRANS_FLAG | /* exporting contexts */
66 GSS_C_INTEG_FLAG | /* integrity */
67 GSS_C_CONF_FLAG | /* confidentiality */
68 GSS_C_SEQUENCE_FLAG | /* sequencing */
69 GSS_C_REPLAY_FLAG; /* replay detection */
73 return GSS_S_COMPLETE;
77 releaseInitiatorContext(struct gss_eap_initiator_ctx *ctx)
79 eap_peer_sm_deinit(ctx->eap);
83 releaseAcceptorContext(struct gss_eap_acceptor_ctx *ctx)
87 if (ctx->avps != NULL)
88 rc_avpair_free(ctx->avps);
89 if (ctx->radHandle != NULL)
90 rc_config_free(ctx->radHandle);
92 gss_release_buffer(&tmpMinor, &ctx->state);
96 gssEapReleaseContext(OM_uint32 *minor,
100 gss_ctx_id_t ctx = *pCtx;
101 krb5_context krbContext = NULL;
103 if (ctx == GSS_C_NO_CONTEXT) {
104 return GSS_S_COMPLETE;
107 gssEapKerberosInit(&tmpMinor, &krbContext);
109 #ifdef GSSEAP_ENABLE_REAUTH
110 if (ctx->flags & CTX_FLAG_KRB_REAUTH_GSS) {
111 gssDeleteSecContext(&tmpMinor, &ctx->kerberosCtx, GSS_C_NO_BUFFER);
114 if (CTX_IS_INITIATOR(ctx)) {
115 releaseInitiatorContext(&ctx->initiatorCtx);
117 releaseAcceptorContext(&ctx->acceptorCtx);
120 krb5_free_keyblock_contents(krbContext, &ctx->rfc3961Key);
121 gssEapReleaseName(&tmpMinor, &ctx->initiatorName);
122 gssEapReleaseName(&tmpMinor, &ctx->acceptorName);
123 gss_release_oid(&tmpMinor, &ctx->mechanismUsed);
124 sequenceFree(&tmpMinor, &ctx->seqState);
126 GSSEAP_MUTEX_DESTROY(&ctx->mutex);
128 memset(ctx, 0, sizeof(*ctx));
130 *pCtx = GSS_C_NO_CONTEXT;
133 return GSS_S_COMPLETE;
137 gssEapMakeToken(OM_uint32 *minor,
139 const gss_buffer_t innerToken,
140 enum gss_eap_token_type tokenType,
141 gss_buffer_t outputToken)
145 outputToken->length = tokenSize(ctx->mechanismUsed, innerToken->length);
146 outputToken->value = GSSEAP_MALLOC(outputToken->length);
147 if (outputToken->value == NULL) {
149 return GSS_S_FAILURE;
152 p = (unsigned char *)outputToken->value;
153 makeTokenHeader(ctx->mechanismUsed, innerToken->length, &p, tokenType);
154 memcpy(p, innerToken->value, innerToken->length);
157 return GSS_S_COMPLETE;
161 gssEapVerifyToken(OM_uint32 *minor,
163 const gss_buffer_t inputToken,
164 enum gss_eap_token_type *actualToken,
165 gss_buffer_t innerInputToken)
169 unsigned char *p = (unsigned char *)inputToken->value;
173 if (ctx->mechanismUsed != GSS_C_NO_OID) {
174 oid = ctx->mechanismUsed;
176 oidBuf.elements = NULL;
181 major = verifyTokenHeader(minor, oid, &bodySize, &p,
182 inputToken->length, actualToken);
183 if (GSS_ERROR(major))
186 if (ctx->mechanismUsed == GSS_C_NO_OID) {
187 if (!gssEapIsConcreteMechanismOid(oid))
188 return GSS_S_BAD_MECH;
190 if (!gssEapInternalizeOid(oid, &ctx->mechanismUsed)) {
191 major = duplicateOid(minor, oid, &ctx->mechanismUsed);
192 if (GSS_ERROR(major))
197 innerInputToken->length = bodySize;
198 innerInputToken->value = p;
201 return GSS_S_COMPLETE;
205 gssEapContextTime(OM_uint32 *minor,
206 gss_ctx_id_t context_handle,
209 if (context_handle == GSS_C_NO_CONTEXT) {
210 return GSS_S_NO_CONTEXT;
213 if (!CTX_IS_ESTABLISHED(context_handle)) {
214 return GSS_S_NO_CONTEXT;
219 if (context_handle->expiryTime == 0) {
220 *time_rec = GSS_C_INDEFINITE;
222 time_t now, lifetime;
225 lifetime = context_handle->expiryTime - now;
228 return GSS_S_CONTEXT_EXPIRED;
230 *time_rec = lifetime;
233 return GSS_S_COMPLETE;