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 NTSTATUS gssapi_server_auth_start(TALLOC_CTX *mem_ctx,
33 struct gse_context **ctx)
35 struct gse_context *gse_ctx = NULL;
36 uint32_t add_flags = 0;
40 add_flags = GSS_C_DCE_STYLE;
43 /* Let's init the gssapi machinery for this connection */
44 /* passing a NULL server name means the server will try
45 * to accept any connection regardless of the name used as
46 * long as it can find a decryption key */
47 /* by passing NULL, the code will attempt to set a default
48 * keytab based on configuration options */
49 status = gse_init_server(mem_ctx, do_sign, do_seal,
50 add_flags, NULL, &gse_ctx);
51 if (!NT_STATUS_IS_OK(status)) {
52 DEBUG(0, ("Failed to init dcerpc gssapi server (%s)\n",
57 status = gse_get_server_auth_token(mem_ctx, gse_ctx,
59 if (!NT_STATUS_IS_OK(status)) {
60 DEBUG(0, ("Failed to parse initial client token (%s)\n",
66 status = NT_STATUS_OK;
69 if (!NT_STATUS_IS_OK(status)) {
76 NTSTATUS gssapi_server_step(struct gse_context *gse_ctx,
83 status = gse_get_server_auth_token(mem_ctx, gse_ctx,
85 if (!NT_STATUS_IS_OK(status)) {
89 if (gse_require_more_processing(gse_ctx)) {
90 /* ask for next leg */
91 return NT_STATUS_MORE_PROCESSING_REQUIRED;
97 NTSTATUS gssapi_server_check_flags(struct gse_context *gse_ctx)
99 return gse_verify_server_auth_flags(gse_ctx);
102 NTSTATUS gssapi_server_get_user_info(struct gse_context *gse_ctx,
104 struct client_address *client_id,
105 struct auth_serversupplied_info **server_info)
110 struct PAC_DATA *pac_data;
111 struct PAC_LOGON_INFO *logon_info = NULL;
112 enum ndr_err_code ndr_err;
123 tmp_ctx = talloc_new(mem_ctx);
125 return NT_STATUS_NO_MEMORY;
128 status = gse_get_pac_blob(gse_ctx, tmp_ctx, &pac);
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)) {
138 pac_data = talloc_zero(tmp_ctx, struct PAC_DATA);
140 status = NT_STATUS_NO_MEMORY;
144 ndr_err = ndr_pull_struct_blob(&pac, pac_data, pac_data,
145 (ndr_pull_flags_fn_t)ndr_pull_PAC_DATA);
146 if (!NDR_ERR_CODE_IS_SUCCESS(ndr_err)) {
147 DEBUG(1, ("Failed to parse the PAC for %s\n", princ_name));
148 status = ndr_map_error2ntstatus(ndr_err);
152 /* get logon name and logon info */
153 for (i = 0; i < pac_data->num_buffers; i++) {
154 struct PAC_BUFFER *data_buf = &pac_data->buffers[i];
156 switch (data_buf->type) {
157 case PAC_TYPE_LOGON_INFO:
158 if (!data_buf->info) {
161 logon_info = data_buf->info->logon_info.info;
168 DEBUG(1, ("Invalid PAC data, missing logon info!\n"));
169 status = NT_STATUS_NOT_FOUND;
173 /* TODO: Should we check princ_name against account_name in
174 * logon_name ? Are they supposed to be identical, or can an
175 * account_name be different from the UPN ? */
177 status = get_user_from_kerberos_info(tmp_ctx, client_id->name,
178 princ_name, logon_info,
179 &is_mapped, &is_guest,
182 if (!NT_STATUS_IS_OK(status)) {
183 DEBUG(1, ("Failed to map kerberos principal to system user "
184 "(%s)\n", nt_errstr(status)));
185 status = NT_STATUS_ACCESS_DENIED;
189 /* TODO: save PAC data in netsamlogon cache ? */
191 status = make_server_info_krb5(mem_ctx,
192 ntuser, ntdomain, username, pw,
193 logon_info, is_guest, server_info);
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);