diff options
Diffstat (limited to 'third_party/heimdal/lib/gssapi/krb5/set_cred_option.c')
| -rw-r--r-- | third_party/heimdal/lib/gssapi/krb5/set_cred_option.c | 249 |
1 files changed, 249 insertions, 0 deletions
diff --git a/third_party/heimdal/lib/gssapi/krb5/set_cred_option.c b/third_party/heimdal/lib/gssapi/krb5/set_cred_option.c new file mode 100644 index 0000000..ef177a0 --- /dev/null +++ b/third_party/heimdal/lib/gssapi/krb5/set_cred_option.c @@ -0,0 +1,249 @@ +/* + * Copyright (c) 2004, PADL Software Pty Ltd. + * 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 PADL Software 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 PADL SOFTWARE 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 PADL SOFTWARE 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" + +static OM_uint32 +import_cred(OM_uint32 *minor_status, + krb5_context context, + gss_cred_id_t *cred_handle, + const gss_buffer_t value) +{ + OM_uint32 major_stat; + krb5_error_code ret; + krb5_principal keytab_principal = NULL; + krb5_keytab keytab = NULL; + krb5_storage *sp = NULL; + krb5_ccache id = NULL; + char *str; + + if (cred_handle == NULL || *cred_handle != GSS_C_NO_CREDENTIAL) { + *minor_status = 0; + return GSS_S_FAILURE; + } + + sp = krb5_storage_from_mem(value->value, value->length); + if (sp == NULL) { + *minor_status = 0; + return GSS_S_FAILURE; + } + + /* credential cache name */ + ret = krb5_ret_string(sp, &str); + if (ret) { + *minor_status = ret; + major_stat = GSS_S_FAILURE; + goto out; + } + if (str[0]) { + ret = krb5_cc_resolve(context, str, &id); + if (ret) { + *minor_status = ret; + major_stat = GSS_S_FAILURE; + goto out; + } + } + free(str); + str = NULL; + + /* keytab principal name */ + ret = krb5_ret_string(sp, &str); + if (ret == 0 && str[0]) + ret = krb5_parse_name(context, str, &keytab_principal); + if (ret) { + *minor_status = ret; + major_stat = GSS_S_FAILURE; + goto out; + } + free(str); + str = NULL; + + /* keytab principal */ + ret = krb5_ret_string(sp, &str); + if (ret) { + *minor_status = ret; + major_stat = GSS_S_FAILURE; + goto out; + } + if (str[0]) { + ret = krb5_kt_resolve(context, str, &keytab); + if (ret) { + *minor_status = ret; + major_stat = GSS_S_FAILURE; + goto out; + } + } + free(str); + str = NULL; + + major_stat = _gsskrb5_krb5_import_cred(minor_status, &id, keytab_principal, + keytab, cred_handle); +out: + if (id) + krb5_cc_close(context, id); + if (keytab_principal) + krb5_free_principal(context, keytab_principal); + if (keytab) + krb5_kt_close(context, keytab); + if (str) + free(str); + if (sp) + krb5_storage_free(sp); + + return major_stat; +} + + +static OM_uint32 +allowed_enctypes(OM_uint32 *minor_status, + krb5_context context, + gss_cred_id_t *cred_handle, + const gss_buffer_t value) +{ + OM_uint32 major_stat; + krb5_error_code ret; + size_t len, i; + krb5_enctype *enctypes = NULL; + krb5_storage *sp = NULL; + gsskrb5_cred cred; + + if (cred_handle == NULL || *cred_handle == GSS_C_NO_CREDENTIAL) { + *minor_status = 0; + return GSS_S_FAILURE; + } + + cred = (gsskrb5_cred)*cred_handle; + + if ((value->length % 4) != 0) { + *minor_status = 0; + major_stat = GSS_S_FAILURE; + goto out; + } + + /* serialized as int32_t[], but stored as krb5_enctype[] */ + len = value->length / 4; + enctypes = malloc((len + 1) * sizeof(krb5_enctype)); + if (enctypes == NULL) { + *minor_status = ENOMEM; + major_stat = GSS_S_FAILURE; + goto out; + } + + sp = krb5_storage_from_mem(value->value, value->length); + if (sp == NULL) { + *minor_status = ENOMEM; + major_stat = GSS_S_FAILURE; + goto out; + } + + for (i = 0; i < len; i++) { + int32_t e; + + ret = krb5_ret_int32(sp, &e); + if (ret) { + *minor_status = ret; + major_stat = GSS_S_FAILURE; + goto out; + } + enctypes[i] = e; + } + enctypes[i] = KRB5_ENCTYPE_NULL; + + if (cred->enctypes) + free(cred->enctypes); + cred->enctypes = enctypes; + + krb5_storage_free(sp); + + return GSS_S_COMPLETE; + +out: + if (sp) + krb5_storage_free(sp); + if (enctypes) + free(enctypes); + + return major_stat; +} + +static OM_uint32 +no_ci_flags(OM_uint32 *minor_status, + krb5_context context, + gss_cred_id_t *cred_handle, + const gss_buffer_t value) +{ + gsskrb5_cred cred; + + if (cred_handle == NULL || *cred_handle == GSS_C_NO_CREDENTIAL) { + *minor_status = 0; + return GSS_S_FAILURE; + } + + cred = (gsskrb5_cred)*cred_handle; + cred->cred_flags |= GSS_CF_NO_CI_FLAGS; + + *minor_status = 0; + return GSS_S_COMPLETE; + +} + + +OM_uint32 GSSAPI_CALLCONV +_gsskrb5_set_cred_option + (OM_uint32 *minor_status, + gss_cred_id_t *cred_handle, + const gss_OID desired_object, + const gss_buffer_t value) +{ + krb5_context context; + + GSSAPI_KRB5_INIT (&context); + + if (value == GSS_C_NO_BUFFER) { + *minor_status = EINVAL; + return GSS_S_FAILURE; + } + + if (gss_oid_equal(desired_object, GSS_KRB5_IMPORT_CRED_X)) + return import_cred(minor_status, context, cred_handle, value); + + if (gss_oid_equal(desired_object, GSS_KRB5_SET_ALLOWABLE_ENCTYPES_X)) + return allowed_enctypes(minor_status, context, cred_handle, value); + + if (gss_oid_equal(desired_object, GSS_KRB5_CRED_NO_CI_FLAGS_X)) { + return no_ci_flags(minor_status, context, cred_handle, value); + } + + + *minor_status = EINVAL; + return GSS_S_FAILURE; +} |