3 * DCERPC Server functions
4 * Copyright (C) Simo Sorce 2010.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 3 of the License, or
9 * (at your option) any later version.
11 * This program is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14 * GNU General Public License for more details.
16 * You should have received a copy of the GNU General Public License
17 * along with this program; if not, see <http://www.gnu.org/licenses/>.
22 #include "rpc_server/dcesrv_gssapi.h"
23 #include "../librpc/gen_ndr/ndr_krb5pac.h"
24 #include "librpc/crypto/gse.h"
27 #include "libcli/auth/krb5_wrap.h"
29 NTSTATUS gssapi_server_auth_start(TALLOC_CTX *mem_ctx,
35 struct gse_context **ctx)
37 struct gse_context *gse_ctx = NULL;
38 uint32_t add_flags = 0;
42 add_flags = GSS_C_DCE_STYLE;
45 /* Let's init the gssapi machinery for this connection */
46 /* passing a NULL server name means the server will try
47 * to accept any connection regardless of the name used as
48 * long as it can find a decryption key */
49 /* by passing NULL, the code will attempt to set a default
50 * keytab based on configuration options */
51 status = gse_init_server(mem_ctx, do_sign, do_seal,
53 if (!NT_STATUS_IS_OK(status)) {
54 DEBUG(0, ("Failed to init dcerpc gssapi server (%s)\n",
59 status = gse_get_server_auth_token(mem_ctx, gse_ctx,
61 if (!NT_STATUS_IS_OK(status)) {
62 DEBUG(0, ("Failed to parse initial client token (%s)\n",
68 status = NT_STATUS_OK;
71 if (!NT_STATUS_IS_OK(status)) {
78 NTSTATUS gssapi_server_step(struct gse_context *gse_ctx,
85 status = gse_get_server_auth_token(mem_ctx, gse_ctx,
87 if (!NT_STATUS_IS_OK(status)) {
91 if (gse_require_more_processing(gse_ctx)) {
92 /* ask for next leg */
93 return NT_STATUS_MORE_PROCESSING_REQUIRED;
99 NTSTATUS gssapi_server_check_flags(struct gse_context *gse_ctx)
101 return gse_verify_server_auth_flags(gse_ctx);
104 NTSTATUS gssapi_server_get_user_info(struct gse_context *gse_ctx,
106 struct client_address *client_id,
107 struct auth_serversupplied_info **server_info)
111 struct PAC_DATA *pac_data = NULL;
112 struct PAC_LOGON_INFO *logon_info = NULL;
123 tmp_ctx = talloc_new(mem_ctx);
125 return NT_STATUS_NO_MEMORY;
128 status = gse_get_pac_blob(gse_ctx, tmp_ctx, &pac_blob);
129 if (NT_STATUS_EQUAL(status, NT_STATUS_NOT_FOUND)) {
130 /* TODO: Fetch user by principal name ? */
131 status = NT_STATUS_ACCESS_DENIED;
134 if (!NT_STATUS_IS_OK(status)) {
139 status = kerberos_decode_pac(tmp_ctx,
141 NULL, NULL, NULL, NULL, 0, &pac_data);
143 status = NT_STATUS_ACCESS_DENIED;
145 data_blob_free(&pac_blob);
146 if (!NT_STATUS_IS_OK(status)) {
150 status = gse_get_client_name(gse_ctx, tmp_ctx, &princ_name);
151 if (!NT_STATUS_IS_OK(status)) {
155 /* get logon name and logon info */
156 for (i = 0; i < pac_data->num_buffers; i++) {
157 struct PAC_BUFFER *data_buf = &pac_data->buffers[i];
159 switch (data_buf->type) {
160 case PAC_TYPE_LOGON_INFO:
161 if (!data_buf->info) {
164 logon_info = data_buf->info->logon_info.info;
171 DEBUG(1, ("Invalid PAC data, missing logon info!\n"));
172 status = NT_STATUS_NOT_FOUND;
176 status = get_user_from_kerberos_info(tmp_ctx, client_id->name,
177 princ_name, logon_info,
178 &is_mapped, &is_guest,
181 if (!NT_STATUS_IS_OK(status)) {
182 DEBUG(1, ("Failed to map kerberos principal to system user "
183 "(%s)\n", nt_errstr(status)));
184 status = NT_STATUS_ACCESS_DENIED;
188 /* TODO: save PAC data in netsamlogon cache ? */
190 status = make_session_info_krb5(mem_ctx,
191 ntuser, ntdomain, username, pw,
192 logon_info, is_guest, is_mapped, NULL /* No session key for now */,
194 if (!NT_STATUS_IS_OK(status)) {
195 DEBUG(1, ("Failed to map kerberos pac to server info (%s)\n",
197 status = NT_STATUS_ACCESS_DENIED;
201 DEBUG(5, (__location__ "OK: user: %s domain: %s client: %s\n",
202 ntuser, ntdomain, client_id->name));
204 status = NT_STATUS_OK;
207 TALLOC_FREE(tmp_ctx);