2 * Copyright (c) 2010, JANET(UK)
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6 * modification, are permitted provided that the following conditions
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17 * may be used to endorse or promote products derived from this software
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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
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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_AUTHENTICATE;
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)
85 if (ctx->avps != NULL)
86 rc_avpair_free(ctx->avps);
87 if (ctx->radHandle != NULL)
88 rc_config_free(ctx->radHandle);
92 gssEapReleaseContext(OM_uint32 *minor,
96 gss_ctx_id_t ctx = *pCtx;
97 krb5_context krbContext = NULL;
99 if (ctx == GSS_C_NO_CONTEXT) {
100 return GSS_S_COMPLETE;
103 gssEapKerberosInit(&tmpMinor, &krbContext);
105 if (CTX_IS_INITIATOR(ctx)) {
106 releaseInitiatorContext(&ctx->initiatorCtx);
108 releaseAcceptorContext(&ctx->acceptorCtx);
111 krb5_free_keyblock_contents(krbContext, &ctx->rfc3961Key);
112 gssEapReleaseName(&tmpMinor, &ctx->initiatorName);
113 gssEapReleaseName(&tmpMinor, &ctx->acceptorName);
114 gss_release_oid(&tmpMinor, &ctx->mechanismUsed);
115 sequenceFree(&tmpMinor, &ctx->seqState);
117 GSSEAP_MUTEX_DESTROY(&ctx->mutex);
119 memset(ctx, 0, sizeof(*ctx));
121 *pCtx = GSS_C_NO_CONTEXT;
124 return GSS_S_COMPLETE;
128 gssEapMakeToken(OM_uint32 *minor,
130 const gss_buffer_t innerToken,
131 enum gss_eap_token_type tokenType,
132 gss_buffer_t outputToken)
136 outputToken->length = tokenSize(ctx->mechanismUsed, innerToken->length);
137 outputToken->value = GSSEAP_MALLOC(outputToken->length);
138 if (outputToken->value == NULL) {
140 return GSS_S_FAILURE;
143 p = (unsigned char *)outputToken->value;
144 makeTokenHeader(ctx->mechanismUsed, innerToken->length, &p, tokenType);
145 memcpy(p, innerToken->value, innerToken->length);
148 return GSS_S_COMPLETE;
152 gssEapVerifyToken(OM_uint32 *minor,
154 const gss_buffer_t inputToken,
155 enum gss_eap_token_type tokenType,
156 gss_buffer_t innerInputToken)
160 unsigned char *p = (unsigned char *)inputToken->value;
164 if (ctx->mechanismUsed != GSS_C_NO_OID) {
165 oid = ctx->mechanismUsed;
167 oidBuf.elements = NULL;
172 major = verifyTokenHeader(minor, oid, &bodySize, &p,
173 inputToken->length, tokenType);
174 if (GSS_ERROR(major))
175 return GSS_S_DEFECTIVE_TOKEN;
177 if (ctx->mechanismUsed == GSS_C_NO_OID) {
178 if (!gssEapIsConcreteMechanismOid(oid))
179 return GSS_S_BAD_MECH;
181 if (!gssEapInternalizeOid(oid, &ctx->mechanismUsed)) {
182 major = duplicateOid(minor, oid, &ctx->mechanismUsed);
183 if (GSS_ERROR(major))
188 innerInputToken->length = bodySize;
189 innerInputToken->value = p;
192 return GSS_S_COMPLETE;