mirror of
https://github.com/samba-team/samba.git
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afc93255d1
negotiation works.
Jeremy.
(This used to be commit d78045601a
)
637 lines
15 KiB
C
637 lines
15 KiB
C
/*
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Unix SMB/CIFS implementation.
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FS info functions
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Copyright (C) Stefan (metze) Metzmacher 2003
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Copyright (C) Jeremy Allison 2007
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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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/****************************************************************************
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Get UNIX extensions version info.
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****************************************************************************/
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bool cli_unix_extensions_version(struct cli_state *cli, uint16 *pmajor, uint16 *pminor,
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uint32 *pcaplow, uint32 *pcaphigh)
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{
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bool ret = False;
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uint16 setup;
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char param[2];
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char *rparam=NULL, *rdata=NULL;
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unsigned int rparam_count=0, rdata_count=0;
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setup = TRANSACT2_QFSINFO;
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SSVAL(param,0,SMB_QUERY_CIFS_UNIX_INFO);
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if (!cli_send_trans(cli, SMBtrans2,
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NULL,
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0, 0,
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&setup, 1, 0,
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param, 2, 0,
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NULL, 0, 560)) {
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goto cleanup;
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}
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if (!cli_receive_trans(cli, SMBtrans2,
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&rparam, &rparam_count,
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&rdata, &rdata_count)) {
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goto cleanup;
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}
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if (cli_is_error(cli)) {
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ret = False;
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goto cleanup;
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} else {
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ret = True;
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}
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if (rdata_count < 12) {
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goto cleanup;
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}
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*pmajor = SVAL(rdata,0);
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*pminor = SVAL(rdata,2);
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cli->posix_capabilities = *pcaplow = IVAL(rdata,4);
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*pcaphigh = IVAL(rdata,8);
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/* todo: but not yet needed
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* return the other stuff
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*/
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cleanup:
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SAFE_FREE(rparam);
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SAFE_FREE(rdata);
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return ret;
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}
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/****************************************************************************
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Set UNIX extensions capabilities.
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****************************************************************************/
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bool cli_set_unix_extensions_capabilities(struct cli_state *cli, uint16 major, uint16 minor,
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uint32 caplow, uint32 caphigh)
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{
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bool ret = False;
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uint16 setup;
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char param[4];
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char data[12];
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char *rparam=NULL, *rdata=NULL;
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unsigned int rparam_count=0, rdata_count=0;
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setup = TRANSACT2_SETFSINFO;
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SSVAL(param,0,0);
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SSVAL(param,2,SMB_SET_CIFS_UNIX_INFO);
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SSVAL(data,0,major);
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SSVAL(data,2,minor);
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SIVAL(data,4,caplow);
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SIVAL(data,8,caphigh);
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if (!cli_send_trans(cli, SMBtrans2,
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NULL,
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0, 0,
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&setup, 1, 0,
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param, 4, 0,
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data, 12, 560)) {
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goto cleanup;
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}
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if (!cli_receive_trans(cli, SMBtrans2,
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&rparam, &rparam_count,
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&rdata, &rdata_count)) {
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goto cleanup;
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}
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if (cli_is_error(cli)) {
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ret = False;
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goto cleanup;
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} else {
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ret = True;
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}
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cleanup:
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SAFE_FREE(rparam);
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SAFE_FREE(rdata);
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return ret;
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}
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bool cli_get_fs_attr_info(struct cli_state *cli, uint32 *fs_attr)
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{
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bool ret = False;
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uint16 setup;
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char param[2];
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char *rparam=NULL, *rdata=NULL;
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unsigned int rparam_count=0, rdata_count=0;
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if (!cli||!fs_attr)
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smb_panic("cli_get_fs_attr_info() called with NULL Pionter!");
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setup = TRANSACT2_QFSINFO;
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SSVAL(param,0,SMB_QUERY_FS_ATTRIBUTE_INFO);
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if (!cli_send_trans(cli, SMBtrans2,
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NULL,
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0, 0,
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&setup, 1, 0,
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param, 2, 0,
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NULL, 0, 560)) {
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goto cleanup;
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}
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if (!cli_receive_trans(cli, SMBtrans2,
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&rparam, &rparam_count,
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&rdata, &rdata_count)) {
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goto cleanup;
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}
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if (cli_is_error(cli)) {
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ret = False;
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goto cleanup;
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} else {
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ret = True;
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}
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if (rdata_count < 12) {
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goto cleanup;
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}
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*fs_attr = IVAL(rdata,0);
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/* todo: but not yet needed
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* return the other stuff
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*/
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cleanup:
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SAFE_FREE(rparam);
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SAFE_FREE(rdata);
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return ret;
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}
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bool cli_get_fs_volume_info_old(struct cli_state *cli, fstring volume_name, uint32 *pserial_number)
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{
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bool ret = False;
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uint16 setup;
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char param[2];
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char *rparam=NULL, *rdata=NULL;
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unsigned int rparam_count=0, rdata_count=0;
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unsigned char nlen;
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setup = TRANSACT2_QFSINFO;
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SSVAL(param,0,SMB_INFO_VOLUME);
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if (!cli_send_trans(cli, SMBtrans2,
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NULL,
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0, 0,
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&setup, 1, 0,
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param, 2, 0,
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NULL, 0, 560)) {
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goto cleanup;
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}
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if (!cli_receive_trans(cli, SMBtrans2,
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&rparam, &rparam_count,
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&rdata, &rdata_count)) {
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goto cleanup;
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}
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if (cli_is_error(cli)) {
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ret = False;
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goto cleanup;
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} else {
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ret = True;
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}
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if (rdata_count < 5) {
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goto cleanup;
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}
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if (pserial_number) {
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*pserial_number = IVAL(rdata,0);
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}
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nlen = CVAL(rdata,l2_vol_cch);
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clistr_pull(cli, volume_name, rdata + l2_vol_szVolLabel, sizeof(fstring), nlen, STR_NOALIGN);
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/* todo: but not yet needed
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* return the other stuff
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*/
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cleanup:
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SAFE_FREE(rparam);
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SAFE_FREE(rdata);
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return ret;
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}
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bool cli_get_fs_volume_info(struct cli_state *cli, fstring volume_name, uint32 *pserial_number, time_t *pdate)
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{
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bool ret = False;
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uint16 setup;
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char param[2];
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char *rparam=NULL, *rdata=NULL;
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unsigned int rparam_count=0, rdata_count=0;
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unsigned int nlen;
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setup = TRANSACT2_QFSINFO;
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SSVAL(param,0,SMB_QUERY_FS_VOLUME_INFO);
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if (!cli_send_trans(cli, SMBtrans2,
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NULL,
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0, 0,
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&setup, 1, 0,
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param, 2, 0,
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NULL, 0, 560)) {
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goto cleanup;
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}
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if (!cli_receive_trans(cli, SMBtrans2,
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&rparam, &rparam_count,
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&rdata, &rdata_count)) {
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goto cleanup;
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}
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if (cli_is_error(cli)) {
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ret = False;
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goto cleanup;
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} else {
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ret = True;
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}
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if (rdata_count < 19) {
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goto cleanup;
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}
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if (pdate) {
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struct timespec ts;
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ts = interpret_long_date(rdata);
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*pdate = ts.tv_sec;
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}
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if (pserial_number) {
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*pserial_number = IVAL(rdata,8);
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}
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nlen = IVAL(rdata,12);
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clistr_pull(cli, volume_name, rdata + 18, sizeof(fstring), nlen, STR_UNICODE);
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/* todo: but not yet needed
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* return the other stuff
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*/
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cleanup:
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SAFE_FREE(rparam);
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SAFE_FREE(rdata);
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return ret;
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}
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/******************************************************************************
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Send/receive the request encryption blob.
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******************************************************************************/
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static NTSTATUS enc_blob_send_receive(struct cli_state *cli, DATA_BLOB *in, DATA_BLOB *out, DATA_BLOB *param_out)
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{
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uint16 setup;
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char param[4];
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char *rparam=NULL, *rdata=NULL;
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unsigned int rparam_count=0, rdata_count=0;
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NTSTATUS status = NT_STATUS_OK;
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setup = TRANSACT2_SETFSINFO;
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SSVAL(param,0,0);
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SSVAL(param,2,SMB_REQUEST_TRANSPORT_ENCRYPTION);
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if (!cli_send_trans(cli, SMBtrans2,
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NULL,
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0, 0,
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&setup, 1, 0,
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param, 4, 0,
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(char *)in->data, in->length, CLI_BUFFER_SIZE)) {
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status = cli_nt_error(cli);
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goto out;
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}
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if (!cli_receive_trans(cli, SMBtrans2,
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&rparam, &rparam_count,
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&rdata, &rdata_count)) {
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status = cli_nt_error(cli);
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goto out;
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}
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if (cli_is_error(cli)) {
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status = cli_nt_error(cli);
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if (!NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED)) {
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goto out;
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}
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}
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*out = data_blob(rdata, rdata_count);
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*param_out = data_blob(rparam, rparam_count);
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out:
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SAFE_FREE(rparam);
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SAFE_FREE(rdata);
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return status;
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}
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/******************************************************************************
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Make a client state struct.
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******************************************************************************/
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static struct smb_trans_enc_state *make_cli_enc_state(enum smb_trans_enc_type smb_enc_type)
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{
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struct smb_trans_enc_state *es = NULL;
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es = SMB_MALLOC_P(struct smb_trans_enc_state);
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if (!es) {
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return NULL;
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}
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ZERO_STRUCTP(es);
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es->smb_enc_type = smb_enc_type;
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if (smb_enc_type == SMB_TRANS_ENC_GSS) {
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#if defined(HAVE_GSSAPI) && defined(HAVE_KRB5)
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es->s.gss_state = SMB_MALLOC_P(struct smb_tran_enc_state_gss);
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if (!es->s.gss_state) {
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SAFE_FREE(es);
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return NULL;
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}
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ZERO_STRUCTP(es->s.gss_state);
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#else
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DEBUG(0,("make_cli_enc_state: no krb5 compiled.\n"));
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SAFE_FREE(es);
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return NULL;
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#endif
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}
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return es;
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}
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/******************************************************************************
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Start a raw ntlmssp encryption.
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******************************************************************************/
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NTSTATUS cli_raw_ntlm_smb_encryption_start(struct cli_state *cli,
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const char *user,
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const char *pass,
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const char *domain)
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{
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DATA_BLOB blob_in = data_blob_null;
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DATA_BLOB blob_out = data_blob_null;
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DATA_BLOB param_out = data_blob_null;
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NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
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struct smb_trans_enc_state *es = make_cli_enc_state(SMB_TRANS_ENC_NTLM);
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if (!es) {
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return NT_STATUS_NO_MEMORY;
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}
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status = ntlmssp_client_start(&es->s.ntlmssp_state);
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if (!NT_STATUS_IS_OK(status)) {
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goto fail;
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}
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ntlmssp_want_feature(es->s.ntlmssp_state, NTLMSSP_FEATURE_SESSION_KEY);
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es->s.ntlmssp_state->neg_flags |= (NTLMSSP_NEGOTIATE_SIGN|NTLMSSP_NEGOTIATE_SEAL);
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if (!NT_STATUS_IS_OK(status = ntlmssp_set_username(es->s.ntlmssp_state, user))) {
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goto fail;
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}
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if (!NT_STATUS_IS_OK(status = ntlmssp_set_domain(es->s.ntlmssp_state, domain))) {
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goto fail;
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}
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if (!NT_STATUS_IS_OK(status = ntlmssp_set_password(es->s.ntlmssp_state, pass))) {
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goto fail;
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}
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do {
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status = ntlmssp_update(es->s.ntlmssp_state, blob_in, &blob_out);
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data_blob_free(&blob_in);
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data_blob_free(¶m_out);
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if (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED) || NT_STATUS_IS_OK(status)) {
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NTSTATUS trans_status = enc_blob_send_receive(cli,
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&blob_out,
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&blob_in,
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¶m_out);
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if (!NT_STATUS_EQUAL(trans_status,
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NT_STATUS_MORE_PROCESSING_REQUIRED) &&
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!NT_STATUS_IS_OK(trans_status)) {
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status = trans_status;
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} else {
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if (param_out.length == 2) {
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es->enc_ctx_num = SVAL(param_out.data, 0);
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}
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}
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}
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data_blob_free(&blob_out);
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} while (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED));
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data_blob_free(&blob_in);
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if (NT_STATUS_IS_OK(status)) {
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/* Replace the old state, if any. */
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if (cli->trans_enc_state) {
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common_free_encryption_state(&cli->trans_enc_state);
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}
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cli->trans_enc_state = es;
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cli->trans_enc_state->enc_on = True;
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es = NULL;
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}
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fail:
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common_free_encryption_state(&es);
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return status;
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}
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#if defined(HAVE_GSSAPI) && defined(HAVE_KRB5)
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#ifndef SMB_GSS_REQUIRED_FLAGS
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#define SMB_GSS_REQUIRED_FLAGS (GSS_C_CONF_FLAG|GSS_C_INTEG_FLAG|GSS_C_MUTUAL_FLAG|GSS_C_REPLAY_FLAG|GSS_C_SEQUENCE_FLAG)
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#endif
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/******************************************************************************
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Get client gss blob to send to a server.
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******************************************************************************/
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static NTSTATUS make_cli_gss_blob(struct smb_trans_enc_state *es,
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const char *service,
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const char *host,
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NTSTATUS status_in,
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DATA_BLOB spnego_blob_in,
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DATA_BLOB *p_blob_out)
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{
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const char *krb_mechs[] = {OID_KERBEROS5, NULL};
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OM_uint32 ret;
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OM_uint32 min;
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gss_name_t srv_name;
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gss_buffer_desc input_name;
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gss_buffer_desc *p_tok_in;
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gss_buffer_desc tok_out, tok_in;
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DATA_BLOB blob_out = data_blob_null;
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DATA_BLOB blob_in = data_blob_null;
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char *host_princ_s = NULL;
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OM_uint32 ret_flags = 0;
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NTSTATUS status = NT_STATUS_OK;
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gss_OID_desc nt_hostbased_service =
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{10, CONST_DISCARD(char *,"\x2a\x86\x48\x86\xf7\x12\x01\x02\x01\x04")};
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memset(&tok_out, '\0', sizeof(tok_out));
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/* Get a ticket for the service@host */
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asprintf(&host_princ_s, "%s@%s", service, host);
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if (host_princ_s == NULL) {
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return NT_STATUS_NO_MEMORY;
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}
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input_name.value = host_princ_s;
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input_name.length = strlen(host_princ_s) + 1;
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ret = gss_import_name(&min,
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&input_name,
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&nt_hostbased_service,
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&srv_name);
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if (ret != GSS_S_COMPLETE) {
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SAFE_FREE(host_princ_s);
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return map_nt_error_from_gss(ret, min);
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}
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if (spnego_blob_in.length == 0) {
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p_tok_in = GSS_C_NO_BUFFER;
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} else {
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/* Remove the SPNEGO wrapper */
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if (!spnego_parse_auth_response(spnego_blob_in, status_in, OID_KERBEROS5, &blob_in)) {
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status = NT_STATUS_UNSUCCESSFUL;
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goto fail;
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}
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tok_in.value = blob_in.data;
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tok_in.length = blob_in.length;
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p_tok_in = &tok_in;
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}
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ret = gss_init_sec_context(&min,
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GSS_C_NO_CREDENTIAL, /* Use our default cred. */
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|
&es->s.gss_state->gss_ctx,
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srv_name,
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GSS_C_NO_OID, /* default OID. */
|
|
GSS_C_MUTUAL_FLAG | GSS_C_REPLAY_FLAG | GSS_C_SEQUENCE_FLAG,
|
|
GSS_C_INDEFINITE, /* requested ticket lifetime. */
|
|
NULL, /* no channel bindings */
|
|
p_tok_in,
|
|
NULL, /* ignore mech type */
|
|
&tok_out,
|
|
&ret_flags,
|
|
NULL); /* ignore time_rec */
|
|
|
|
status = map_nt_error_from_gss(ret, min);
|
|
if (!NT_STATUS_IS_OK(status) && !NT_STATUS_EQUAL(status,NT_STATUS_MORE_PROCESSING_REQUIRED)) {
|
|
ADS_STATUS adss = ADS_ERROR_GSS(ret, min);
|
|
DEBUG(10,("make_cli_gss_blob: gss_init_sec_context failed with %s\n",
|
|
ads_errstr(adss)));
|
|
goto fail;
|
|
}
|
|
|
|
if ((ret_flags & SMB_GSS_REQUIRED_FLAGS) != SMB_GSS_REQUIRED_FLAGS) {
|
|
status = NT_STATUS_ACCESS_DENIED;
|
|
}
|
|
|
|
blob_out = data_blob(tok_out.value, tok_out.length);
|
|
|
|
/* Wrap in an SPNEGO wrapper */
|
|
*p_blob_out = gen_negTokenTarg(krb_mechs, blob_out);
|
|
|
|
fail:
|
|
|
|
data_blob_free(&blob_out);
|
|
data_blob_free(&blob_in);
|
|
SAFE_FREE(host_princ_s);
|
|
gss_release_name(&min, &srv_name);
|
|
if (tok_out.value) {
|
|
gss_release_buffer(&min, &tok_out);
|
|
}
|
|
return status;
|
|
}
|
|
|
|
/******************************************************************************
|
|
Start a SPNEGO gssapi encryption context.
|
|
******************************************************************************/
|
|
|
|
NTSTATUS cli_gss_smb_encryption_start(struct cli_state *cli)
|
|
{
|
|
DATA_BLOB blob_recv = data_blob_null;
|
|
DATA_BLOB blob_send = data_blob_null;
|
|
DATA_BLOB param_out = data_blob_null;
|
|
NTSTATUS status = NT_STATUS_UNSUCCESSFUL;
|
|
fstring fqdn;
|
|
const char *servicename;
|
|
struct smb_trans_enc_state *es = make_cli_enc_state(SMB_TRANS_ENC_GSS);
|
|
|
|
if (!es) {
|
|
return NT_STATUS_NO_MEMORY;
|
|
}
|
|
|
|
name_to_fqdn(fqdn, cli->desthost);
|
|
strlower_m(fqdn);
|
|
|
|
servicename = "cifs";
|
|
status = make_cli_gss_blob(es, servicename, fqdn, NT_STATUS_OK, blob_recv, &blob_send);
|
|
if (!NT_STATUS_EQUAL(status,NT_STATUS_MORE_PROCESSING_REQUIRED)) {
|
|
servicename = "host";
|
|
status = make_cli_gss_blob(es, servicename, fqdn, NT_STATUS_OK, blob_recv, &blob_send);
|
|
if (!NT_STATUS_EQUAL(status,NT_STATUS_MORE_PROCESSING_REQUIRED)) {
|
|
goto fail;
|
|
}
|
|
}
|
|
|
|
do {
|
|
data_blob_free(&blob_recv);
|
|
status = enc_blob_send_receive(cli, &blob_send, &blob_recv, ¶m_out);
|
|
if (param_out.length == 2) {
|
|
es->enc_ctx_num = SVAL(param_out.data, 0);
|
|
}
|
|
data_blob_free(&blob_send);
|
|
status = make_cli_gss_blob(es, servicename, fqdn, status, blob_recv, &blob_send);
|
|
} while (NT_STATUS_EQUAL(status, NT_STATUS_MORE_PROCESSING_REQUIRED));
|
|
data_blob_free(&blob_recv);
|
|
|
|
if (NT_STATUS_IS_OK(status)) {
|
|
/* Replace the old state, if any. */
|
|
if (cli->trans_enc_state) {
|
|
common_free_encryption_state(&cli->trans_enc_state);
|
|
}
|
|
cli->trans_enc_state = es;
|
|
cli->trans_enc_state->enc_on = True;
|
|
es = NULL;
|
|
}
|
|
|
|
fail:
|
|
|
|
common_free_encryption_state(&es);
|
|
return status;
|
|
}
|
|
#else
|
|
NTSTATUS cli_gss_smb_encryption_start(struct cli_state *cli)
|
|
{
|
|
return NT_STATUS_NOT_SUPPORTED;
|
|
}
|
|
#endif
|