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34 * Utility routines for credential handles.
37 #include "gssapiP_eap.h"
40 ///This didn't work for me when Visual Studio 2005 Express is used:
41 ///#include <Shlobj.h>
44 #if !defined(snprintf)
45 #define snprintf _snprintf
51 #include <stdio.h> /* for BUFSIZ */
54 gssEapAllocCred(OM_uint32 *minor, gss_cred_id_t *pCred)
59 *pCred = GSS_C_NO_CREDENTIAL;
61 cred = (gss_cred_id_t)GSSEAP_CALLOC(1, sizeof(*cred));
67 if (GSSEAP_MUTEX_INIT(&cred->mutex) != 0) {
69 gssEapReleaseCred(&tmpMinor, &cred);
76 return GSS_S_COMPLETE;
80 gssEapReleaseCred(OM_uint32 *minor, gss_cred_id_t *pCred)
83 gss_cred_id_t cred = *pCred;
84 krb5_context krbContext = NULL;
86 if (cred == GSS_C_NO_CREDENTIAL) {
87 return GSS_S_COMPLETE;
90 GSSEAP_KRB_INIT(&krbContext);
92 gssEapReleaseName(&tmpMinor, &cred->name);
94 if (cred->password.value != NULL) {
95 memset(cred->password.value, 0, cred->password.length);
96 GSSEAP_FREE(cred->password.value);
99 if (cred->radiusConfigFile != NULL)
100 GSSEAP_FREE(cred->radiusConfigFile);
101 if (cred->radiusConfigStanza != NULL)
102 GSSEAP_FREE(cred->radiusConfigStanza);
104 #ifdef GSSEAP_ENABLE_REAUTH
105 if (cred->krbCredCache != NULL) {
106 if (cred->flags & CRED_FLAG_DEFAULT_CCACHE)
107 krb5_cc_close(krbContext, cred->krbCredCache);
109 krb5_cc_destroy(krbContext, cred->krbCredCache);
111 if (cred->reauthCred != GSS_C_NO_CREDENTIAL)
112 gssReleaseCred(&tmpMinor, &cred->reauthCred);
115 GSSEAP_MUTEX_DESTROY(&cred->mutex);
116 memset(cred, 0, sizeof(*cred));
121 return GSS_S_COMPLETE;
125 readDefaultIdentityAndCreds(OM_uint32 *minor,
126 gss_buffer_t defaultIdentity,
127 gss_buffer_t defaultCreds)
129 OM_uint32 major, tmpMinor;
135 struct passwd *pw = NULL, pwd;
138 defaultIdentity->length = 0;
139 defaultIdentity->value = NULL;
141 defaultCreds->length = 0;
142 defaultCreds->value = NULL;
144 ccacheName = getenv("GSSEAP_IDENTITY");
145 if (ccacheName == NULL) {
147 if (getpwuid_r(getuid(), &pwd, pwbuf, sizeof(pwbuf), &pw) != 0 ||
148 pw == NULL || pw->pw_dir == NULL) {
149 major = GSS_S_CRED_UNAVAIL;
154 snprintf(buf, sizeof(buf), "%s/.gss_eap_id", pw->pw_dir);
157 TCHAR szPath[MAX_PATH];
159 if(!SUCCEEDED(SHGetFolderPath(NULL,
160 CSIDL_APPDATA, /* |CSIDL_FLAG_CREATE */
161 NULL, /* User access token */
162 0, /* == SHGFP_TYPE_CURRENT from ShlObj.h */
164 major = GSS_S_CRED_UNAVAIL;
165 ////Needs to be correctly converted from the GetLastError();
170 snprintf(buf, sizeof(buf), "%s/.gss_eap_id", szPath);
175 fp = fopen(ccacheName, "r");
177 major = GSS_S_CRED_UNAVAIL;
178 *minor = GSSEAP_NO_DEFAULT_CRED;
182 while (fgets(buf, sizeof(buf), fp) != NULL) {
183 gss_buffer_desc src, *dst;
185 src.length = strlen(buf);
191 if (buf[src.length - 1] == '\n') {
192 buf[src.length - 1] = '\0';
193 if (--src.length == 0)
197 if (defaultIdentity->value == NULL)
198 dst = defaultIdentity;
199 else if (defaultCreds->value == NULL)
204 major = duplicateBuffer(minor, &src, dst);
205 if (GSS_ERROR(major))
209 if (defaultIdentity->length == 0) {
210 major = GSS_S_CRED_UNAVAIL;
211 *minor = GSSEAP_NO_DEFAULT_CRED;
215 major = GSS_S_COMPLETE;
222 if (GSS_ERROR(major)) {
223 gss_release_buffer(&tmpMinor, defaultIdentity);
224 gss_release_buffer(&tmpMinor, defaultCreds);
231 gssEapAcquireCred(OM_uint32 *minor,
232 const gss_name_t desiredName,
233 const gss_buffer_t password,
234 OM_uint32 timeReq GSSEAP_UNUSED,
235 const gss_OID_set desiredMechs,
237 gss_cred_id_t *pCred,
238 gss_OID_set *pActualMechs,
241 OM_uint32 major, tmpMinor;
243 gss_buffer_desc defaultIdentity = GSS_C_EMPTY_BUFFER;
244 gss_name_t defaultIdentityName = GSS_C_NO_NAME;
245 gss_buffer_desc defaultCreds = GSS_C_EMPTY_BUFFER;
246 gss_OID nameMech = GSS_C_NO_OID;
248 /* XXX TODO validate with changed set_cred_option API */
249 *pCred = GSS_C_NO_CREDENTIAL;
251 major = gssEapAllocCred(minor, &cred);
252 if (GSS_ERROR(major))
257 cred->flags |= CRED_FLAG_INITIATE | CRED_FLAG_ACCEPT;
260 cred->flags |= CRED_FLAG_INITIATE;
263 cred->flags |= CRED_FLAG_ACCEPT;
266 major = GSS_S_FAILURE;
267 *minor = GSSEAP_BAD_USAGE;
272 major = gssEapValidateMechs(minor, desiredMechs);
273 if (GSS_ERROR(major))
276 major = duplicateOidSet(minor, desiredMechs, &cred->mechanisms);
277 if (GSS_ERROR(major))
280 if (cred->mechanisms != GSS_C_NO_OID_SET &&
281 cred->mechanisms->count == 1)
282 nameMech = &cred->mechanisms->elements[0];
284 if (cred->flags & CRED_FLAG_INITIATE) {
285 major = readDefaultIdentityAndCreds(minor, &defaultIdentity, &defaultCreds);
286 if (major == GSS_S_COMPLETE) {
287 major = gssEapImportName(minor, &defaultIdentity, GSS_C_NT_USER_NAME,
288 nameMech, &defaultIdentityName);
289 if (GSS_ERROR(major))
291 } else if (major != GSS_S_CRED_UNAVAIL)
295 if (desiredName != GSS_C_NO_NAME) {
296 GSSEAP_MUTEX_LOCK(&desiredName->mutex);
298 major = gssEapDuplicateName(minor, desiredName, &cred->name);
299 if (GSS_ERROR(major)) {
300 GSSEAP_MUTEX_UNLOCK(&desiredName->mutex);
304 GSSEAP_MUTEX_UNLOCK(&desiredName->mutex);
306 if (defaultIdentityName != GSS_C_NO_NAME) {
309 major = gssEapCompareName(minor, desiredName,
310 defaultIdentityName, &nameEqual);
311 if (GSS_ERROR(major))
314 cred->flags |= CRED_FLAG_DEFAULT_IDENTITY;
317 if (cred->flags & CRED_FLAG_ACCEPT) {
318 gss_buffer_desc nameBuf = GSS_C_EMPTY_BUFFER;
319 char serviceName[5 + MAXHOSTNAMELEN];
321 /* default host-based service is host@localhost */
322 memcpy(serviceName, "host@", 5);
323 if (gethostname(&serviceName[5], MAXHOSTNAMELEN) != 0) {
324 major = GSS_S_FAILURE;
325 *minor = GSSEAP_NO_HOSTNAME;
329 nameBuf.value = serviceName;
330 nameBuf.length = strlen((char *)nameBuf.value);
332 major = gssEapImportName(minor, &nameBuf, GSS_C_NT_HOSTBASED_SERVICE,
333 nameMech, &cred->name);
334 if (GSS_ERROR(major))
336 } else if (cred->flags & CRED_FLAG_INITIATE) {
337 if (defaultIdentityName == GSS_C_NO_NAME) {
338 major = GSS_S_CRED_UNAVAIL;
339 *minor = GSSEAP_NO_DEFAULT_IDENTITY;
343 cred->name = defaultIdentityName;
344 defaultIdentityName = GSS_C_NO_NAME;
346 cred->flags |= CRED_FLAG_DEFAULT_IDENTITY;
349 assert(cred->name != GSS_C_NO_NAME);
351 if (password != GSS_C_NO_BUFFER) {
352 major = duplicateBuffer(minor, password, &cred->password);
353 if (GSS_ERROR(major))
356 cred->flags |= CRED_FLAG_PASSWORD;
357 } else if (defaultCreds.value != NULL &&
358 (cred->flags & CRED_FLAG_DEFAULT_IDENTITY)) {
359 cred->password = defaultCreds;
361 defaultCreds.length = 0;
362 defaultCreds.value = NULL;
364 cred->flags |= CRED_FLAG_PASSWORD;
365 } else if (cred->flags & CRED_FLAG_INITIATE) {
367 * OK, here we need to ask the supplicant if we have creds or it
368 * will acquire them, so GS2 can know whether to prompt for a
372 && !gssEapCanReauthP(cred, GSS_C_NO_NAME, timeReq)
374 major = GSS_S_CRED_UNAVAIL;
375 *minor = GSSEAP_NO_DEFAULT_CRED;
379 if (pActualMechs != NULL) {
380 major = duplicateOidSet(minor, cred->mechanisms, pActualMechs);
381 if (GSS_ERROR(major))
386 *timeRec = GSS_C_INDEFINITE;
390 major = GSS_S_COMPLETE;
394 if (GSS_ERROR(major))
395 gssEapReleaseCred(&tmpMinor, &cred);
396 gssEapReleaseName(&tmpMinor, &defaultIdentityName);
397 gss_release_buffer(&tmpMinor, &defaultIdentity);
398 if (defaultCreds.value != NULL) {
399 memset(defaultCreds.value, 0, defaultCreds.length);
400 gss_release_buffer(&tmpMinor, &defaultCreds);
407 * Return TRUE if cred available for mechanism. Caller need no acquire
408 * lock because mechanisms list is immutable.
411 gssEapCredAvailable(gss_cred_id_t cred, gss_OID mech)
416 assert(mech != GSS_C_NO_OID);
418 if (cred == GSS_C_NO_CREDENTIAL || cred->mechanisms == GSS_C_NO_OID_SET)
421 gss_test_oid_set_member(&minor, mech, cred->mechanisms, &present);
427 gssEapInquireCred(OM_uint32 *minor,
430 OM_uint32 *pLifetime,
431 gss_cred_usage_t *cred_usage,
432 gss_OID_set *mechanisms)
435 time_t now, lifetime;
438 major = gssEapDuplicateName(minor, cred->name, name);
439 if (GSS_ERROR(major))
443 if (cred_usage != NULL) {
444 OM_uint32 flags = (cred->flags & (CRED_FLAG_INITIATE | CRED_FLAG_ACCEPT));
447 case CRED_FLAG_INITIATE:
448 *cred_usage = GSS_C_INITIATE;
450 case CRED_FLAG_ACCEPT:
451 *cred_usage = GSS_C_ACCEPT;
454 *cred_usage = GSS_C_BOTH;
459 if (mechanisms != NULL) {
460 if (cred->mechanisms != GSS_C_NO_OID_SET)
461 major = duplicateOidSet(minor, cred->mechanisms, mechanisms);
463 major = gssEapIndicateMechs(minor, mechanisms);
464 if (GSS_ERROR(major))
468 if (cred->expiryTime == 0) {
469 lifetime = GSS_C_INDEFINITE;
472 lifetime = now - cred->expiryTime;
477 if (pLifetime != NULL) {
478 *pLifetime = lifetime;
482 *minor = GSSEAP_CRED_EXPIRED;
483 return GSS_S_CREDENTIALS_EXPIRED;
486 major = GSS_S_COMPLETE;