diff options
Diffstat (limited to 'third_party/heimdal/lib/gssapi/krb5/creds.c')
-rw-r--r-- | third_party/heimdal/lib/gssapi/krb5/creds.c | 276 |
1 files changed, 276 insertions, 0 deletions
diff --git a/third_party/heimdal/lib/gssapi/krb5/creds.c b/third_party/heimdal/lib/gssapi/krb5/creds.c new file mode 100644 index 0000000..efb0a23 --- /dev/null +++ b/third_party/heimdal/lib/gssapi/krb5/creds.c @@ -0,0 +1,276 @@ +/* + * Copyright (c) 2009 Kungliga Tekniska Högskolan + * (Royal Institute of Technology, Stockholm, Sweden). + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ + +#include "gsskrb5_locl.h" + +OM_uint32 GSSAPI_CALLCONV +_gsskrb5_export_cred(OM_uint32 *minor_status, + gss_cred_id_t cred_handle, + gss_buffer_t cred_token) +{ + OM_uint32 major_status; + gsskrb5_cred handle = (gsskrb5_cred)cred_handle; + krb5_context context; + krb5_error_code ret; + krb5_storage *sp; + krb5_data data; + const char *type; + char *str; + + GSSAPI_KRB5_INIT (&context); + + if (handle->usage != GSS_C_INITIATE && handle->usage != GSS_C_BOTH) { + *minor_status = GSS_KRB5_S_G_BAD_USAGE; + return GSS_S_FAILURE; + } + + sp = krb5_storage_emem(); + if (sp == NULL) { + *minor_status = ENOMEM; + return GSS_S_FAILURE; + } + + type = krb5_cc_get_type(context, handle->ccache); + if (strcmp(type, "MEMORY") == 0) { + krb5_creds *creds; + krb5_data config_start_realm; + char *start_realm; + + ret = krb5_store_uint32(sp, 0); + if (ret) { + krb5_storage_free(sp); + *minor_status = ret; + return GSS_S_FAILURE; + } + + ret = krb5_cc_get_config(context, handle->ccache, NULL, "start_realm", + &config_start_realm); + if (ret == 0) { + start_realm = strndup(config_start_realm.data, + config_start_realm.length); + krb5_data_free(&config_start_realm); + } else { + start_realm = strdup(krb5_principal_get_realm(context, + handle->principal)); + } + if (start_realm == NULL) { + *minor_status = krb5_enomem(context); + krb5_storage_free(sp); + return GSS_S_FAILURE; + } + + ret = _krb5_get_krbtgt(context, handle->ccache, start_realm, &creds); + free(start_realm); + start_realm = NULL; + if (ret) { + krb5_storage_free(sp); + *minor_status = ret; + return GSS_S_FAILURE; + } + + ret = krb5_store_creds(sp, creds); + krb5_free_creds(context, creds); + if (ret) { + krb5_storage_free(sp); + *minor_status = ret; + return GSS_S_FAILURE; + } + + } else { + ret = krb5_store_uint32(sp, 1); + if (ret) { + krb5_storage_free(sp); + *minor_status = ret; + return GSS_S_FAILURE; + } + + ret = krb5_cc_get_full_name(context, handle->ccache, &str); + if (ret) { + krb5_storage_free(sp); + *minor_status = ret; + return GSS_S_FAILURE; + } + + ret = krb5_store_string(sp, str); + free(str); + if (ret) { + krb5_storage_free(sp); + *minor_status = ret; + return GSS_S_FAILURE; + } + } + ret = krb5_storage_to_data(sp, &data); + krb5_storage_free(sp); + if (ret) { + *minor_status = ret; + return GSS_S_FAILURE; + } + sp = krb5_storage_emem(); + if (sp == NULL) { + krb5_data_free(&data); + *minor_status = ENOMEM; + return GSS_S_FAILURE; + } + + major_status = _gss_mg_store_oid(minor_status, sp, GSS_KRB5_MECHANISM); + if (major_status != GSS_S_COMPLETE) { + krb5_data_free(&data); + krb5_storage_free(sp); + return major_status; + } + + ret = krb5_store_data(sp, data); + krb5_data_free(&data); + if (ret) { + krb5_storage_free(sp); + *minor_status = ret; + return GSS_S_FAILURE; + } + + ret = krb5_storage_to_data(sp, &data); + krb5_storage_free(sp); + if (ret) { + *minor_status = ret; + return GSS_S_FAILURE; + } + + cred_token->value = data.data; + cred_token->length = data.length; + + return GSS_S_COMPLETE; +} + +OM_uint32 GSSAPI_CALLCONV +_gsskrb5_import_cred(OM_uint32 * minor_status, + gss_buffer_t cred_token, + gss_cred_id_t * cred_handle) +{ + krb5_context context; + krb5_error_code ret; + gsskrb5_cred handle; + krb5_ccache id; + krb5_storage *sp; + char *str; + uint32_t type; + int flags = 0; + + *cred_handle = GSS_C_NO_CREDENTIAL; + + GSSAPI_KRB5_INIT (&context); + + sp = krb5_storage_from_mem(cred_token->value, cred_token->length); + if (sp == NULL) { + *minor_status = ENOMEM; + return GSS_S_FAILURE; + } + + ret = krb5_ret_uint32(sp, &type); + if (ret) { + krb5_storage_free(sp); + *minor_status = ret; + return GSS_S_FAILURE; + } + switch (type) { + case 0: { + krb5_creds creds; + + ret = krb5_ret_creds(sp, &creds); + krb5_storage_free(sp); + if (ret) { + *minor_status = ret; + return GSS_S_FAILURE; + } + + ret = krb5_cc_new_unique(context, "MEMORY", NULL, &id); + if (ret) { + *minor_status = ret; + return GSS_S_FAILURE; + } + + ret = krb5_cc_initialize(context, id, creds.client); + if (ret) { + krb5_cc_destroy(context, id); + *minor_status = ret; + return GSS_S_FAILURE; + } + + ret = krb5_cc_store_cred(context, id, &creds); + krb5_free_cred_contents(context, &creds); + if (ret) { + *minor_status = ret; + return GSS_S_FAILURE; + } + + flags |= GSS_CF_DESTROY_CRED_ON_RELEASE; + + break; + } + case 1: + ret = krb5_ret_string(sp, &str); + krb5_storage_free(sp); + if (ret) { + *minor_status = ret; + return GSS_S_FAILURE; + } + + ret = krb5_cc_resolve(context, str, &id); + krb5_xfree(str); + if (ret) { + *minor_status = ret; + return GSS_S_FAILURE; + } + break; + + default: + krb5_storage_free(sp); + *minor_status = 0; + return GSS_S_NO_CRED; + } + + handle = calloc(1, sizeof(*handle)); + if (handle == NULL) { + krb5_cc_close(context, id); + *minor_status = ENOMEM; + return GSS_S_FAILURE; + } + + handle->usage = GSS_C_INITIATE; + handle->destination_realm = NULL; + krb5_cc_get_principal(context, id, &handle->principal); + handle->ccache = id; + handle->cred_flags = flags; + + *cred_handle = (gss_cred_id_t)handle; + + return GSS_S_COMPLETE; +} |