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74eed8f3ed
There is no reason this can't be a normal constant string in the loadparm system, now that we have lp_set_cmdline() to handle overrides correctly. Andrew Bartlett
684 lines
18 KiB
C
684 lines
18 KiB
C
/*
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Unix SMB/CIFS implementation.
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NT Domain Authentication SMB / MSRPC client
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Copyright (C) Andrew Tridgell 1992-2000
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Copyright (C) Jeremy Allison 1998.
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Largely re-written by Jeremy Allison (C) 2005.
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Copyright (C) Guenther Deschner 2008.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "includes.h"
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#include "rpc_client/rpc_client.h"
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#include "../libcli/auth/libcli_auth.h"
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#include "../librpc/gen_ndr/ndr_netlogon_c.h"
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#include "rpc_client/cli_netlogon.h"
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#include "rpc_client/init_netlogon.h"
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#include "rpc_client/util_netlogon.h"
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#include "../libcli/security/security.h"
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/****************************************************************************
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Wrapper function that uses the auth and auth2 calls to set up a NETLOGON
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credentials chain. Stores the credentials in the struct dcinfo in the
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netlogon pipe struct.
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****************************************************************************/
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NTSTATUS rpccli_netlogon_setup_creds(struct rpc_pipe_client *cli,
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const char *server_name,
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const char *domain,
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const char *clnt_name,
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const char *machine_account,
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const unsigned char machine_pwd[16],
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enum netr_SchannelType sec_chan_type,
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uint32_t *neg_flags_inout)
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{
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NTSTATUS status;
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NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
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struct netr_Credential clnt_chal_send;
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struct netr_Credential srv_chal_recv;
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struct samr_Password password;
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bool retried = false;
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fstring mach_acct;
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uint32_t neg_flags = *neg_flags_inout;
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struct dcerpc_binding_handle *b = cli->binding_handle;
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if (!ndr_syntax_id_equal(&cli->abstract_syntax,
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&ndr_table_netlogon.syntax_id)) {
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return NT_STATUS_INVALID_PARAMETER;
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}
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TALLOC_FREE(cli->dc);
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/* Store the machine account password we're going to use. */
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memcpy(password.hash, machine_pwd, 16);
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fstr_sprintf( mach_acct, "%s$", machine_account);
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again:
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/* Create the client challenge. */
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generate_random_buffer(clnt_chal_send.data, 8);
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/* Get the server challenge. */
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status = dcerpc_netr_ServerReqChallenge(b, talloc_tos(),
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cli->srv_name_slash,
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clnt_name,
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&clnt_chal_send,
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&srv_chal_recv,
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&result);
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if (!NT_STATUS_IS_OK(status)) {
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return status;
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}
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if (!NT_STATUS_IS_OK(result)) {
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return result;
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}
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/* Calculate the session key and client credentials */
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cli->dc = netlogon_creds_client_init(cli,
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mach_acct,
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clnt_name,
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&clnt_chal_send,
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&srv_chal_recv,
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&password,
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&clnt_chal_send,
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neg_flags);
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if (!cli->dc) {
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return NT_STATUS_NO_MEMORY;
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}
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/*
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* Send client auth-2 challenge and receive server repy.
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*/
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status = dcerpc_netr_ServerAuthenticate2(b, talloc_tos(),
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cli->srv_name_slash,
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cli->dc->account_name,
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sec_chan_type,
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cli->dc->computer_name,
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&clnt_chal_send, /* input. */
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&srv_chal_recv, /* output. */
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&neg_flags,
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&result);
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if (!NT_STATUS_IS_OK(status)) {
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return status;
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}
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/* we might be talking to NT4, so let's downgrade in that case and retry
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* with the returned neg_flags - gd */
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if (NT_STATUS_EQUAL(result, NT_STATUS_ACCESS_DENIED) && !retried) {
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retried = true;
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TALLOC_FREE(cli->dc);
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goto again;
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}
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if (!NT_STATUS_IS_OK(result)) {
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return result;
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}
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/*
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* Check the returned value using the initial
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* server received challenge.
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*/
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if (!netlogon_creds_client_check(cli->dc, &srv_chal_recv)) {
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/*
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* Server replied with bad credential. Fail.
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*/
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DEBUG(0,("rpccli_netlogon_setup_creds: server %s "
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"replied with bad credential\n",
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cli->desthost ));
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return NT_STATUS_ACCESS_DENIED;
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}
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DEBUG(5,("rpccli_netlogon_setup_creds: server %s credential "
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"chain established.\n",
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cli->desthost ));
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cli->dc->negotiate_flags = neg_flags;
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*neg_flags_inout = neg_flags;
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return NT_STATUS_OK;
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}
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/* Logon domain user */
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NTSTATUS rpccli_netlogon_sam_logon(struct rpc_pipe_client *cli,
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TALLOC_CTX *mem_ctx,
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uint32 logon_parameters,
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const char *domain,
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const char *username,
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const char *password,
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const char *workstation,
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uint16_t validation_level,
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int logon_type)
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{
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NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
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NTSTATUS status;
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struct netr_Authenticator clnt_creds;
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struct netr_Authenticator ret_creds;
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union netr_LogonLevel *logon;
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union netr_Validation validation;
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uint8_t authoritative;
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fstring clnt_name_slash;
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struct dcerpc_binding_handle *b = cli->binding_handle;
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ZERO_STRUCT(ret_creds);
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logon = talloc_zero(mem_ctx, union netr_LogonLevel);
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if (!logon) {
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return NT_STATUS_NO_MEMORY;
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}
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if (workstation) {
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fstr_sprintf( clnt_name_slash, "\\\\%s", workstation );
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} else {
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fstr_sprintf( clnt_name_slash, "\\\\%s", lp_netbios_name() );
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}
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/* Initialise input parameters */
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netlogon_creds_client_authenticator(cli->dc, &clnt_creds);
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switch (logon_type) {
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case NetlogonInteractiveInformation: {
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struct netr_PasswordInfo *password_info;
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struct samr_Password lmpassword;
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struct samr_Password ntpassword;
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password_info = talloc_zero(mem_ctx, struct netr_PasswordInfo);
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if (!password_info) {
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return NT_STATUS_NO_MEMORY;
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}
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nt_lm_owf_gen(password, ntpassword.hash, lmpassword.hash);
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if (cli->dc->negotiate_flags & NETLOGON_NEG_ARCFOUR) {
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netlogon_creds_arcfour_crypt(cli->dc, lmpassword.hash, 16);
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netlogon_creds_arcfour_crypt(cli->dc, ntpassword.hash, 16);
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} else {
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netlogon_creds_des_encrypt(cli->dc, &lmpassword);
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netlogon_creds_des_encrypt(cli->dc, &ntpassword);
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}
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password_info->identity_info.domain_name.string = domain;
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password_info->identity_info.parameter_control = logon_parameters;
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password_info->identity_info.logon_id_low = 0xdead;
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password_info->identity_info.logon_id_high = 0xbeef;
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password_info->identity_info.account_name.string = username;
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password_info->identity_info.workstation.string = clnt_name_slash;
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password_info->lmpassword = lmpassword;
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password_info->ntpassword = ntpassword;
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logon->password = password_info;
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break;
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}
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case NetlogonNetworkInformation: {
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struct netr_NetworkInfo *network_info;
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uint8 chal[8];
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unsigned char local_lm_response[24];
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unsigned char local_nt_response[24];
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struct netr_ChallengeResponse lm;
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struct netr_ChallengeResponse nt;
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ZERO_STRUCT(lm);
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ZERO_STRUCT(nt);
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network_info = talloc_zero(mem_ctx, struct netr_NetworkInfo);
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if (!network_info) {
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return NT_STATUS_NO_MEMORY;
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}
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generate_random_buffer(chal, 8);
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SMBencrypt(password, chal, local_lm_response);
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SMBNTencrypt(password, chal, local_nt_response);
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lm.length = 24;
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lm.data = local_lm_response;
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nt.length = 24;
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nt.data = local_nt_response;
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network_info->identity_info.domain_name.string = domain;
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network_info->identity_info.parameter_control = logon_parameters;
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network_info->identity_info.logon_id_low = 0xdead;
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network_info->identity_info.logon_id_high = 0xbeef;
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network_info->identity_info.account_name.string = username;
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network_info->identity_info.workstation.string = clnt_name_slash;
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memcpy(network_info->challenge, chal, 8);
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network_info->nt = nt;
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network_info->lm = lm;
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logon->network = network_info;
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break;
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}
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default:
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DEBUG(0, ("switch value %d not supported\n",
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logon_type));
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return NT_STATUS_INVALID_INFO_CLASS;
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}
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status = dcerpc_netr_LogonSamLogon(b, mem_ctx,
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cli->srv_name_slash,
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lp_netbios_name(),
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&clnt_creds,
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&ret_creds,
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logon_type,
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logon,
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validation_level,
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&validation,
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&authoritative,
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&result);
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if (!NT_STATUS_IS_OK(status)) {
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return status;
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}
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/* Always check returned credentials */
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if (!netlogon_creds_client_check(cli->dc, &ret_creds.cred)) {
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DEBUG(0,("rpccli_netlogon_sam_logon: credentials chain check failed\n"));
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return NT_STATUS_ACCESS_DENIED;
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}
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return result;
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}
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static NTSTATUS map_validation_to_info3(TALLOC_CTX *mem_ctx,
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uint16_t validation_level,
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union netr_Validation *validation,
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struct netr_SamInfo3 **info3_p)
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{
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struct netr_SamInfo3 *info3;
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NTSTATUS status;
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if (validation == NULL) {
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return NT_STATUS_INVALID_PARAMETER;
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}
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switch (validation_level) {
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case 3:
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if (validation->sam3 == NULL) {
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return NT_STATUS_INVALID_PARAMETER;
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}
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info3 = talloc_move(mem_ctx, &validation->sam3);
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break;
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case 6:
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if (validation->sam6 == NULL) {
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return NT_STATUS_INVALID_PARAMETER;
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}
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info3 = talloc_zero(mem_ctx, struct netr_SamInfo3);
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if (info3 == NULL) {
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return NT_STATUS_NO_MEMORY;
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}
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status = copy_netr_SamBaseInfo(info3, &validation->sam6->base, &info3->base);
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if (!NT_STATUS_IS_OK(status)) {
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TALLOC_FREE(info3);
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return status;
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}
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info3->sidcount = validation->sam6->sidcount;
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info3->sids = talloc_move(info3, &validation->sam6->sids);
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break;
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default:
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return NT_STATUS_BAD_VALIDATION_CLASS;
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}
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*info3_p = info3;
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return NT_STATUS_OK;
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}
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/**
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* Logon domain user with an 'network' SAM logon
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*
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* @param info3 Pointer to a NET_USER_INFO_3 already allocated by the caller.
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**/
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NTSTATUS rpccli_netlogon_sam_network_logon(struct rpc_pipe_client *cli,
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TALLOC_CTX *mem_ctx,
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uint32 logon_parameters,
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const char *server,
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const char *username,
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const char *domain,
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const char *workstation,
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const uint8 chal[8],
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uint16_t validation_level,
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DATA_BLOB lm_response,
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DATA_BLOB nt_response,
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struct netr_SamInfo3 **info3)
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{
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NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
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NTSTATUS status;
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const char *workstation_name_slash;
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const char *server_name_slash;
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struct netr_Authenticator clnt_creds;
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struct netr_Authenticator ret_creds;
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union netr_LogonLevel *logon = NULL;
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struct netr_NetworkInfo *network_info;
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uint8_t authoritative;
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union netr_Validation validation;
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struct netr_ChallengeResponse lm;
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struct netr_ChallengeResponse nt;
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struct dcerpc_binding_handle *b = cli->binding_handle;
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*info3 = NULL;
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ZERO_STRUCT(ret_creds);
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ZERO_STRUCT(lm);
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ZERO_STRUCT(nt);
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logon = talloc_zero(mem_ctx, union netr_LogonLevel);
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if (!logon) {
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return NT_STATUS_NO_MEMORY;
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}
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network_info = talloc_zero(mem_ctx, struct netr_NetworkInfo);
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if (!network_info) {
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return NT_STATUS_NO_MEMORY;
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}
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netlogon_creds_client_authenticator(cli->dc, &clnt_creds);
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if (server[0] != '\\' && server[1] != '\\') {
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server_name_slash = talloc_asprintf(mem_ctx, "\\\\%s", server);
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} else {
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server_name_slash = server;
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}
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if (workstation[0] != '\\' && workstation[1] != '\\') {
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workstation_name_slash = talloc_asprintf(mem_ctx, "\\\\%s", workstation);
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} else {
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workstation_name_slash = workstation;
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}
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if (!workstation_name_slash || !server_name_slash) {
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DEBUG(0, ("talloc_asprintf failed!\n"));
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return NT_STATUS_NO_MEMORY;
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}
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/* Initialise input parameters */
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lm.data = lm_response.data;
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lm.length = lm_response.length;
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nt.data = nt_response.data;
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nt.length = nt_response.length;
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network_info->identity_info.domain_name.string = domain;
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network_info->identity_info.parameter_control = logon_parameters;
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network_info->identity_info.logon_id_low = 0xdead;
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network_info->identity_info.logon_id_high = 0xbeef;
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network_info->identity_info.account_name.string = username;
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network_info->identity_info.workstation.string = workstation_name_slash;
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memcpy(network_info->challenge, chal, 8);
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network_info->nt = nt;
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network_info->lm = lm;
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logon->network = network_info;
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/* Marshall data and send request */
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status = dcerpc_netr_LogonSamLogon(b, mem_ctx,
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server_name_slash,
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lp_netbios_name(),
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&clnt_creds,
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&ret_creds,
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NetlogonNetworkInformation,
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logon,
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validation_level,
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&validation,
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&authoritative,
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&result);
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if (!NT_STATUS_IS_OK(status)) {
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return status;
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}
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/* Always check returned credentials. */
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if (!netlogon_creds_client_check(cli->dc, &ret_creds.cred)) {
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DEBUG(0,("rpccli_netlogon_sam_network_logon: credentials chain check failed\n"));
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return NT_STATUS_ACCESS_DENIED;
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}
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if (!NT_STATUS_IS_OK(result)) {
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return result;
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}
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netlogon_creds_decrypt_samlogon(cli->dc, validation_level, &validation);
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result = map_validation_to_info3(mem_ctx, validation_level, &validation, info3);
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if (!NT_STATUS_IS_OK(result)) {
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return result;
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}
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return result;
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}
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NTSTATUS rpccli_netlogon_sam_network_logon_ex(struct rpc_pipe_client *cli,
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TALLOC_CTX *mem_ctx,
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uint32 logon_parameters,
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const char *server,
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const char *username,
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const char *domain,
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const char *workstation,
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const uint8 chal[8],
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uint16_t validation_level,
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DATA_BLOB lm_response,
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DATA_BLOB nt_response,
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struct netr_SamInfo3 **info3)
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{
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NTSTATUS result = NT_STATUS_UNSUCCESSFUL;
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NTSTATUS status;
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const char *workstation_name_slash;
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const char *server_name_slash;
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union netr_LogonLevel *logon = NULL;
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struct netr_NetworkInfo *network_info;
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uint8_t authoritative;
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union netr_Validation validation;
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struct netr_ChallengeResponse lm;
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struct netr_ChallengeResponse nt;
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uint32_t flags = 0;
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struct dcerpc_binding_handle *b = cli->binding_handle;
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*info3 = NULL;
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ZERO_STRUCT(lm);
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ZERO_STRUCT(nt);
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logon = talloc_zero(mem_ctx, union netr_LogonLevel);
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if (!logon) {
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return NT_STATUS_NO_MEMORY;
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}
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network_info = talloc_zero(mem_ctx, struct netr_NetworkInfo);
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if (!network_info) {
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return NT_STATUS_NO_MEMORY;
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}
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|
|
if (server[0] != '\\' && server[1] != '\\') {
|
|
server_name_slash = talloc_asprintf(mem_ctx, "\\\\%s", server);
|
|
} else {
|
|
server_name_slash = server;
|
|
}
|
|
|
|
if (workstation[0] != '\\' && workstation[1] != '\\') {
|
|
workstation_name_slash = talloc_asprintf(mem_ctx, "\\\\%s", workstation);
|
|
} else {
|
|
workstation_name_slash = workstation;
|
|
}
|
|
|
|
if (!workstation_name_slash || !server_name_slash) {
|
|
DEBUG(0, ("talloc_asprintf failed!\n"));
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
/* Initialise input parameters */
|
|
|
|
lm.data = lm_response.data;
|
|
lm.length = lm_response.length;
|
|
nt.data = nt_response.data;
|
|
nt.length = nt_response.length;
|
|
|
|
network_info->identity_info.domain_name.string = domain;
|
|
network_info->identity_info.parameter_control = logon_parameters;
|
|
network_info->identity_info.logon_id_low = 0xdead;
|
|
network_info->identity_info.logon_id_high = 0xbeef;
|
|
network_info->identity_info.account_name.string = username;
|
|
network_info->identity_info.workstation.string = workstation_name_slash;
|
|
|
|
memcpy(network_info->challenge, chal, 8);
|
|
network_info->nt = nt;
|
|
network_info->lm = lm;
|
|
|
|
logon->network = network_info;
|
|
|
|
/* Marshall data and send request */
|
|
|
|
status = dcerpc_netr_LogonSamLogonEx(b, mem_ctx,
|
|
server_name_slash,
|
|
lp_netbios_name(),
|
|
NetlogonNetworkInformation,
|
|
logon,
|
|
validation_level,
|
|
&validation,
|
|
&authoritative,
|
|
&flags,
|
|
&result);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
return status;
|
|
}
|
|
|
|
if (!NT_STATUS_IS_OK(result)) {
|
|
return result;
|
|
}
|
|
|
|
netlogon_creds_decrypt_samlogon(cli->dc, validation_level, &validation);
|
|
|
|
result = map_validation_to_info3(mem_ctx, validation_level, &validation, info3);
|
|
if (!NT_STATUS_IS_OK(result)) {
|
|
return result;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/*********************************************************
|
|
Change the domain password on the PDC.
|
|
|
|
Just changes the password betwen the two values specified.
|
|
|
|
Caller must have the cli connected to the netlogon pipe
|
|
already.
|
|
**********************************************************/
|
|
|
|
NTSTATUS rpccli_netlogon_set_trust_password(struct rpc_pipe_client *cli,
|
|
TALLOC_CTX *mem_ctx,
|
|
const char *account_name,
|
|
const unsigned char orig_trust_passwd_hash[16],
|
|
const char *new_trust_pwd_cleartext,
|
|
const unsigned char new_trust_passwd_hash[16],
|
|
enum netr_SchannelType sec_channel_type)
|
|
{
|
|
NTSTATUS result, status;
|
|
struct netr_Authenticator clnt_creds, srv_cred;
|
|
struct dcerpc_binding_handle *b = cli->binding_handle;
|
|
|
|
if (!cli->dc) {
|
|
uint32_t neg_flags = NETLOGON_NEG_AUTH2_ADS_FLAGS;
|
|
result = rpccli_netlogon_setup_creds(cli,
|
|
cli->desthost, /* server name */
|
|
lp_workgroup(), /* domain */
|
|
lp_netbios_name(), /* client name */
|
|
account_name, /* machine account name */
|
|
orig_trust_passwd_hash,
|
|
sec_channel_type,
|
|
&neg_flags);
|
|
if (!NT_STATUS_IS_OK(result)) {
|
|
DEBUG(3,("rpccli_netlogon_set_trust_password: unable to setup creds (%s)!\n",
|
|
nt_errstr(result)));
|
|
return result;
|
|
}
|
|
}
|
|
|
|
netlogon_creds_client_authenticator(cli->dc, &clnt_creds);
|
|
|
|
if (cli->dc->negotiate_flags & NETLOGON_NEG_PASSWORD_SET2) {
|
|
|
|
struct netr_CryptPassword new_password;
|
|
|
|
init_netr_CryptPassword(new_trust_pwd_cleartext,
|
|
cli->dc->session_key,
|
|
&new_password);
|
|
|
|
status = dcerpc_netr_ServerPasswordSet2(b, mem_ctx,
|
|
cli->srv_name_slash,
|
|
cli->dc->account_name,
|
|
sec_channel_type,
|
|
cli->dc->computer_name,
|
|
&clnt_creds,
|
|
&srv_cred,
|
|
&new_password,
|
|
&result);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(0,("dcerpc_netr_ServerPasswordSet2 failed: %s\n",
|
|
nt_errstr(status)));
|
|
return status;
|
|
}
|
|
} else {
|
|
|
|
struct samr_Password new_password;
|
|
memcpy(new_password.hash, new_trust_passwd_hash, sizeof(new_password.hash));
|
|
netlogon_creds_des_encrypt(cli->dc, &new_password);
|
|
|
|
status = dcerpc_netr_ServerPasswordSet(b, mem_ctx,
|
|
cli->srv_name_slash,
|
|
cli->dc->account_name,
|
|
sec_channel_type,
|
|
cli->dc->computer_name,
|
|
&clnt_creds,
|
|
&srv_cred,
|
|
&new_password,
|
|
&result);
|
|
if (!NT_STATUS_IS_OK(status)) {
|
|
DEBUG(0,("dcerpc_netr_ServerPasswordSet failed: %s\n",
|
|
nt_errstr(status)));
|
|
return status;
|
|
}
|
|
}
|
|
|
|
/* Always check returned credentials. */
|
|
if (!netlogon_creds_client_check(cli->dc, &srv_cred.cred)) {
|
|
DEBUG(0,("credentials chain check failed\n"));
|
|
return NT_STATUS_ACCESS_DENIED;
|
|
}
|
|
|
|
if (!NT_STATUS_IS_OK(result)) {
|
|
DEBUG(0,("dcerpc_netr_ServerPasswordSet{2} failed: %s\n",
|
|
nt_errstr(result)));
|
|
return result;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|