2 * Copyright (c) 2011, JANET(UK)
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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 */
74 GSS_C_MUTUAL_FLAG; /*xxx big hack */
78 return GSS_S_COMPLETE;
82 releaseInitiatorContext(struct gss_eap_initiator_ctx *ctx)
84 eap_peer_sm_deinit(ctx->eap);
87 #ifdef GSSEAP_ENABLE_ACCEPTOR
89 releaseAcceptorContext(struct gss_eap_acceptor_ctx *ctx)
93 if (ctx->radConn != NULL)
94 rs_conn_destroy(ctx->radConn);
95 if (ctx->radContext != NULL)
96 rs_context_destroy(ctx->radContext);
97 if (ctx->radServer != NULL)
98 GSSEAP_FREE(ctx->radServer);
99 gss_release_buffer(&tmpMinor, &ctx->state);
100 if (ctx->vps != NULL)
101 gssEapRadiusFreeAvps(&tmpMinor, &ctx->vps);
103 #endif /* GSSEAP_ENABLE_ACCEPTOR */
106 gssEapReleaseContext(OM_uint32 *minor,
110 gss_ctx_id_t ctx = *pCtx;
111 krb5_context krbContext = NULL;
113 if (ctx == GSS_C_NO_CONTEXT) {
114 return GSS_S_COMPLETE;
117 gssEapKerberosInit(&tmpMinor, &krbContext);
119 #ifdef GSSEAP_ENABLE_REAUTH
120 if (ctx->flags & CTX_FLAG_KRB_REAUTH) {
121 gssDeleteSecContext(&tmpMinor, &ctx->reauthCtx, GSS_C_NO_BUFFER);
124 if (CTX_IS_INITIATOR(ctx)) {
125 releaseInitiatorContext(&ctx->initiatorCtx);
127 #ifdef GSSEAP_ENABLE_ACCEPTOR
128 releaseAcceptorContext(&ctx->acceptorCtx);
132 krb5_free_keyblock_contents(krbContext, &ctx->rfc3961Key);
133 gssEapReleaseName(&tmpMinor, &ctx->initiatorName);
134 gssEapReleaseName(&tmpMinor, &ctx->acceptorName);
135 gssEapReleaseOid(&tmpMinor, &ctx->mechanismUsed);
136 sequenceFree(&tmpMinor, &ctx->seqState);
137 gssEapReleaseCred(&tmpMinor, &ctx->defaultCred);
139 GSSEAP_MUTEX_DESTROY(&ctx->mutex);
141 memset(ctx, 0, sizeof(*ctx));
143 *pCtx = GSS_C_NO_CONTEXT;
146 return GSS_S_COMPLETE;
150 gssEapMakeToken(OM_uint32 *minor,
152 const gss_buffer_t innerToken,
153 enum gss_eap_token_type tokenType,
154 gss_buffer_t outputToken)
158 outputToken->length = tokenSize(ctx->mechanismUsed, innerToken->length);
159 outputToken->value = GSSEAP_MALLOC(outputToken->length);
160 if (outputToken->value == NULL) {
162 return GSS_S_FAILURE;
165 p = (unsigned char *)outputToken->value;
166 makeTokenHeader(ctx->mechanismUsed, innerToken->length, &p, tokenType);
167 memcpy(p, innerToken->value, innerToken->length);
170 return GSS_S_COMPLETE;
174 gssEapVerifyToken(OM_uint32 *minor,
176 const gss_buffer_t inputToken,
177 enum gss_eap_token_type *actualToken,
178 gss_buffer_t innerInputToken)
182 unsigned char *p = (unsigned char *)inputToken->value;
186 if (ctx->mechanismUsed != GSS_C_NO_OID) {
187 oid = ctx->mechanismUsed;
189 oidBuf.elements = NULL;
194 major = verifyTokenHeader(minor, oid, &bodySize, &p,
195 inputToken->length, actualToken);
196 if (GSS_ERROR(major))
199 if (ctx->mechanismUsed == GSS_C_NO_OID) {
200 major = gssEapCanonicalizeOid(minor, oid, 0, &ctx->mechanismUsed);
201 if (GSS_ERROR(major))
205 innerInputToken->length = bodySize;
206 innerInputToken->value = p;
209 return GSS_S_COMPLETE;
213 gssEapContextTime(OM_uint32 *minor,
214 gss_ctx_id_t context_handle,
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;