2 * Copyright (c) 2011, JANET(UK)
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6 * modification, are permitted provided that the following conditions
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29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * Utility routines for context handles.
37 #include "gssapiP_eap.h"
40 gssEapAllocContext(OM_uint32 *minor,
46 assert(*pCtx == GSS_C_NO_CONTEXT);
48 ctx = (gss_ctx_id_t)GSSEAP_CALLOC(1, sizeof(*ctx));
54 if (GSSEAP_MUTEX_INIT(&ctx->mutex) != 0) {
56 gssEapReleaseContext(&tmpMinor, &ctx);
60 ctx->state = GSSEAP_STATE_INITIAL;
63 * Integrity, confidentiality, sequencing and replay detection are
64 * always available. Regardless of what flags are requested in
65 * GSS_Init_sec_context, implementations MUST set the flag corresponding
66 * to these services in the output of GSS_Init_sec_context and
67 * GSS_Accept_sec_context.
69 ctx->gssFlags = GSS_C_TRANS_FLAG | /* exporting contexts */
70 GSS_C_INTEG_FLAG | /* integrity */
71 GSS_C_CONF_FLAG | /* confidentiality */
72 GSS_C_SEQUENCE_FLAG | /* sequencing */
73 GSS_C_REPLAY_FLAG; /* replay detection */
77 return GSS_S_COMPLETE;
81 releaseInitiatorContext(struct gss_eap_initiator_ctx *ctx)
83 eap_peer_sm_deinit(ctx->eap);
87 releaseAcceptorContext(struct gss_eap_acceptor_ctx *ctx)
91 if (ctx->radConn != NULL)
92 rs_conn_destroy(ctx->radConn);
93 if (ctx->radContext != NULL)
94 rs_context_destroy(ctx->radContext);
95 if (ctx->radServer != NULL)
96 GSSEAP_FREE(ctx->radServer);
97 gss_release_buffer(&tmpMinor, &ctx->state);
99 gssEapRadiusFreeAvps(&tmpMinor, &ctx->vps);
103 gssEapReleaseContext(OM_uint32 *minor,
107 gss_ctx_id_t ctx = *pCtx;
108 krb5_context krbContext = NULL;
110 if (ctx == GSS_C_NO_CONTEXT) {
111 return GSS_S_COMPLETE;
114 gssEapKerberosInit(&tmpMinor, &krbContext);
116 #ifdef GSSEAP_ENABLE_REAUTH
117 if (ctx->flags & CTX_FLAG_KRB_REAUTH) {
118 gssDeleteSecContext(&tmpMinor, &ctx->kerberosCtx, GSS_C_NO_BUFFER);
121 if (CTX_IS_INITIATOR(ctx)) {
122 releaseInitiatorContext(&ctx->initiatorCtx);
124 releaseAcceptorContext(&ctx->acceptorCtx);
127 krb5_free_keyblock_contents(krbContext, &ctx->rfc3961Key);
128 gssEapReleaseName(&tmpMinor, &ctx->initiatorName);
129 gssEapReleaseName(&tmpMinor, &ctx->acceptorName);
130 gssEapReleaseOid(&tmpMinor, &ctx->mechanismUsed);
131 sequenceFree(&tmpMinor, &ctx->seqState);
132 gssEapReleaseCred(&tmpMinor, &ctx->defaultCred);
134 GSSEAP_MUTEX_DESTROY(&ctx->mutex);
136 memset(ctx, 0, sizeof(*ctx));
138 *pCtx = GSS_C_NO_CONTEXT;
141 return GSS_S_COMPLETE;
145 gssEapMakeToken(OM_uint32 *minor,
147 const gss_buffer_t innerToken,
148 enum gss_eap_token_type tokenType,
149 gss_buffer_t outputToken)
153 outputToken->length = tokenSize(ctx->mechanismUsed, innerToken->length);
154 outputToken->value = GSSEAP_MALLOC(outputToken->length);
155 if (outputToken->value == NULL) {
157 return GSS_S_FAILURE;
160 p = (unsigned char *)outputToken->value;
161 makeTokenHeader(ctx->mechanismUsed, innerToken->length, &p, tokenType);
162 memcpy(p, innerToken->value, innerToken->length);
165 return GSS_S_COMPLETE;
169 gssEapVerifyToken(OM_uint32 *minor,
171 const gss_buffer_t inputToken,
172 enum gss_eap_token_type *actualToken,
173 gss_buffer_t innerInputToken)
177 unsigned char *p = (unsigned char *)inputToken->value;
181 if (ctx->mechanismUsed != GSS_C_NO_OID) {
182 oid = ctx->mechanismUsed;
184 oidBuf.elements = NULL;
189 major = verifyTokenHeader(minor, oid, &bodySize, &p,
190 inputToken->length, actualToken);
191 if (GSS_ERROR(major))
194 if (ctx->mechanismUsed == GSS_C_NO_OID) {
195 major = gssEapCanonicalizeOid(minor, oid, 0, &ctx->mechanismUsed);
196 if (GSS_ERROR(major))
200 innerInputToken->length = bodySize;
201 innerInputToken->value = p;
204 return GSS_S_COMPLETE;
208 gssEapContextTime(OM_uint32 *minor,
209 gss_ctx_id_t context_handle,
214 if (context_handle->expiryTime == 0) {
215 *time_rec = GSS_C_INDEFINITE;
217 time_t now, lifetime;
220 lifetime = context_handle->expiryTime - now;
223 return GSS_S_CONTEXT_EXPIRED;
225 *time_rec = lifetime;
228 return GSS_S_COMPLETE;