2 * Copyright (c) 1997 - 2005 Kungliga Tekniska Högskolan
3 * (Royal Institute of Technology, Stockholm, Sweden).
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7 * modification, are permitted provided that the following conditions
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34 #include "gsskrb5_locl.h"
37 __gsskrb5_ccache_lifetime(OM_uint32 *minor_status,
40 krb5_principal principal,
43 krb5_creds in_cred, out_cred;
44 krb5_const_realm realm;
47 memset(&in_cred, 0, sizeof(in_cred));
48 in_cred.client = principal;
50 realm = krb5_principal_get_realm(context, principal);
52 _gsskrb5_clear_status ();
53 *minor_status = KRB5_PRINC_NOMATCH; /* XXX */
57 kret = krb5_make_principal(context, &in_cred.server,
58 realm, KRB5_TGS_NAME, realm, NULL);
64 kret = krb5_cc_retrieve_cred(context, id, 0, &in_cred, &out_cred);
65 krb5_free_principal(context, in_cred.server);
69 return GSS_S_COMPLETE;
72 *lifetime = out_cred.times.endtime;
73 krb5_free_cred_contents(context, &out_cred);
75 return GSS_S_COMPLETE;
81 static krb5_error_code
82 get_keytab(krb5_context context, krb5_keytab *keytab)
86 HEIMDAL_MUTEX_lock(&gssapi_keytab_mutex);
88 if (_gsskrb5_keytab != NULL) {
91 kret = krb5_kt_get_full_name(context, _gsskrb5_keytab, &name);
93 kret = krb5_kt_resolve(context, name, keytab);
97 kret = krb5_kt_default(context, keytab);
99 HEIMDAL_MUTEX_unlock(&gssapi_keytab_mutex);
104 static OM_uint32 acquire_initiator_cred
105 (OM_uint32 * minor_status,
106 krb5_context context,
107 gss_const_OID credential_type,
108 const void *credential_data,
109 const gss_name_t desired_name,
111 gss_const_OID desired_mech,
112 gss_cred_usage_t cred_usage,
118 krb5_principal def_princ;
119 krb5_get_init_creds_opt *opt;
122 krb5_error_code kret;
128 memset(&cred, 0, sizeof(cred));
131 * If we have a preferred principal, lets try to find it in all
132 * caches, otherwise, fall back to default cache, ignore all
133 * errors while searching.
136 if (credential_type != GSS_C_NO_OID &&
137 !gss_oid_equal(credential_type, GSS_C_CRED_PASSWORD)) {
138 kret = KRB5_NOCREDS_SUPPLIED; /* XXX */
142 if (handle->principal) {
143 kret = krb5_cc_cache_match (context,
147 ret = GSS_S_COMPLETE;
152 if (ccache == NULL) {
153 kret = krb5_cc_default(context, &ccache);
157 kret = krb5_cc_get_principal(context, ccache, &def_princ);
159 /* we'll try to use a keytab below */
160 krb5_cc_close(context, ccache);
163 } else if (handle->principal == NULL) {
164 kret = krb5_copy_principal(context, def_princ, &handle->principal);
167 } else if (handle->principal != NULL &&
168 krb5_principal_compare(context, handle->principal,
169 def_princ) == FALSE) {
170 krb5_free_principal(context, def_princ);
172 krb5_cc_close(context, ccache);
175 if (def_princ == NULL) {
176 /* We have no existing credentials cache,
177 * so attempt to get a TGT using a keytab.
179 if (handle->principal == NULL) {
180 kret = krb5_get_default_principal(context, &handle->principal);
184 kret = krb5_get_init_creds_opt_alloc(context, &opt);
187 if (credential_type != GSS_C_NO_OID &&
188 gss_oid_equal(credential_type, GSS_C_CRED_PASSWORD)) {
189 gss_buffer_t password = (gss_buffer_t)credential_data;
191 /* XXX are we requiring password to be NUL terminated? */
193 kret = krb5_get_init_creds_password(context, &cred,
196 NULL, NULL, 0, NULL, opt);
198 kret = get_keytab(context, &keytab);
200 krb5_get_init_creds_opt_free(context, opt);
203 kret = krb5_get_init_creds_keytab(context, &cred,
204 handle->principal, keytab,
207 krb5_get_init_creds_opt_free(context, opt);
210 kret = krb5_cc_new_unique(context, krb5_cc_type_memory,
214 kret = krb5_cc_initialize(context, ccache, cred.client);
216 krb5_cc_destroy(context, ccache);
219 kret = krb5_cc_store_cred(context, ccache, &cred);
221 krb5_cc_destroy(context, ccache);
224 handle->lifetime = cred.times.endtime;
225 handle->cred_flags |= GSS_CF_DESTROY_CRED_ON_RELEASE;
228 ret = __gsskrb5_ccache_lifetime(minor_status,
233 if (ret != GSS_S_COMPLETE) {
234 krb5_cc_close(context, ccache);
240 handle->ccache = ccache;
241 ret = GSS_S_COMPLETE;
244 if (cred.client != NULL)
245 krb5_free_cred_contents(context, &cred);
246 if (def_princ != NULL)
247 krb5_free_principal(context, def_princ);
249 krb5_kt_close(context, keytab);
250 if (ret != GSS_S_COMPLETE && kret != 0)
251 *minor_status = kret;
255 static OM_uint32 acquire_acceptor_cred
256 (OM_uint32 * minor_status,
257 krb5_context context,
258 gss_const_OID credential_type,
259 const void *credential_data,
260 const gss_name_t desired_name,
262 gss_const_OID desired_mech,
263 gss_cred_usage_t cred_usage,
268 krb5_error_code kret;
272 if (credential_type != GSS_C_NO_OID) {
277 kret = get_keytab(context, &handle->keytab);
281 /* check that the requested principal exists in the keytab */
282 if (handle->principal) {
283 krb5_keytab_entry entry;
285 kret = krb5_kt_get_entry(context, handle->keytab,
286 handle->principal, 0, 0, &entry);
289 krb5_kt_free_entry(context, &entry);
290 ret = GSS_S_COMPLETE;
293 * Check if there is at least one entry in the keytab before
294 * declaring it as an useful keytab.
296 krb5_keytab_entry tmp;
299 kret = krb5_kt_start_seq_get (context, handle->keytab, &c);
302 if (krb5_kt_next_entry(context, handle->keytab, &tmp, &c) == 0) {
303 krb5_kt_free_entry(context, &tmp);
304 ret = GSS_S_COMPLETE; /* ok found one entry */
306 krb5_kt_end_seq_get (context, handle->keytab, &c);
309 if (ret != GSS_S_COMPLETE) {
310 if (handle->keytab != NULL)
311 krb5_kt_close(context, handle->keytab);
313 *minor_status = kret;
319 OM_uint32 GSSAPI_CALLCONV _gsskrb5_acquire_cred
320 (OM_uint32 * minor_status,
321 const gss_name_t desired_name,
323 const gss_OID_set desired_mechs,
324 gss_cred_usage_t cred_usage,
325 gss_cred_id_t * output_cred_handle,
326 gss_OID_set * actual_mechs,
335 ret = gss_test_oid_set_member(minor_status, GSS_KRB5_MECHANISM,
336 desired_mechs, &present);
341 return GSS_S_BAD_MECH;
345 ret = _gsskrb5_acquire_cred_ext(minor_status,
357 ret = _gsskrb5_inquire_cred(minor_status, *output_cred_handle,
358 NULL, time_rec, NULL, actual_mechs);
361 _gsskrb5_release_cred(&tmp, output_cred_handle);
367 OM_uint32 GSSAPI_CALLCONV _gsskrb5_acquire_cred_ext
368 (OM_uint32 * minor_status,
369 const gss_name_t desired_name,
370 gss_const_OID credential_type,
371 const void *credential_data,
373 gss_const_OID desired_mech,
374 gss_cred_usage_t cred_usage,
375 gss_cred_id_t * output_cred_handle
378 krb5_context context;
382 cred_usage &= GSS_C_OPTION_MASK;
384 if (cred_usage != GSS_C_ACCEPT && cred_usage != GSS_C_INITIATE && cred_usage != GSS_C_BOTH) {
385 *minor_status = GSS_KRB5_S_G_BAD_USAGE;
386 return GSS_S_FAILURE;
389 GSSAPI_KRB5_INIT(&context);
391 *output_cred_handle = NULL;
393 handle = calloc(1, sizeof(*handle));
394 if (handle == NULL) {
395 *minor_status = ENOMEM;
396 return (GSS_S_FAILURE);
399 HEIMDAL_MUTEX_init(&handle->cred_id_mutex);
401 if (desired_name != GSS_C_NO_NAME) {
402 ret = _gsskrb5_canon_name(minor_status, context, 1, NULL,
403 desired_name, &handle->principal);
405 HEIMDAL_MUTEX_destroy(&handle->cred_id_mutex);
410 if (cred_usage == GSS_C_INITIATE || cred_usage == GSS_C_BOTH) {
411 ret = acquire_initiator_cred(minor_status, context,
412 credential_type, credential_data,
413 desired_name, time_req,
414 desired_mech, cred_usage, handle);
415 if (ret != GSS_S_COMPLETE) {
416 HEIMDAL_MUTEX_destroy(&handle->cred_id_mutex);
417 krb5_free_principal(context, handle->principal);
422 if (cred_usage == GSS_C_ACCEPT || cred_usage == GSS_C_BOTH) {
423 ret = acquire_acceptor_cred(minor_status, context,
424 credential_type, credential_data,
425 desired_name, time_req,
426 desired_mech, cred_usage, handle);
427 if (ret != GSS_S_COMPLETE) {
428 HEIMDAL_MUTEX_destroy(&handle->cred_id_mutex);
429 krb5_free_principal(context, handle->principal);
434 ret = gss_create_empty_oid_set(minor_status, &handle->mechanisms);
435 if (ret == GSS_S_COMPLETE)
436 ret = gss_add_oid_set_member(minor_status, GSS_KRB5_MECHANISM,
437 &handle->mechanisms);
438 if (ret != GSS_S_COMPLETE) {
439 if (handle->mechanisms != NULL)
440 gss_release_oid_set(NULL, &handle->mechanisms);
441 HEIMDAL_MUTEX_destroy(&handle->cred_id_mutex);
442 krb5_free_principal(context, handle->principal);
446 handle->usage = cred_usage;
448 *output_cred_handle = (gss_cred_id_t)handle;
449 return (GSS_S_COMPLETE);