forked from Minki/linux
130 lines
4.2 KiB
C
130 lines
4.2 KiB
C
/*
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* fs/cifs/ntlmssp.h
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*
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* Copyright (c) International Business Machines Corp., 2006
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* Author(s): Steve French (sfrench@us.ibm.com)
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*
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* This library is free software; you can redistribute it and/or modify
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* it under the terms of the GNU Lesser General Public License as published
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* by the Free Software Foundation; either version 2.1 of the License, or
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* (at your option) any later version.
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*
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* This library 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
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* the GNU Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "cifspdu.h"
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#include "cifsglob.h"
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#include "cifsproto.h"
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#include "cifs_unicode.h"
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#include "cifs_debug.h"
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#include "ntlmssp.h"
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#include "nterr.h"
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#ifdef CONFIG_CIFS_EXPERIMENTAL
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static __u32 cifs_ssetup_hdr(struct cifsSesInfo *ses, SESSION_SETUP_ANDX *pSMB)
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{
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__u32 capabilities = 0;
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/* init fields common to all four types of SessSetup */
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/* note that header is initialized to zero in header_assemble */
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pSMB->req.AndXCommand = 0xFF;
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pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf);
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pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq);
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/* Now no need to set SMBFLG_CASELESS or obsolete CANONICAL PATH */
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/* BB verify whether signing required on neg or just on auth frame
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(and NTLM case) */
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capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS |
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CAP_LARGE_WRITE_X | CAP_LARGE_READ_X;
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if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED))
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pSMB->req.hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE;
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if (ses->capabilities & CAP_UNICODE) {
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pSMB->req.hdr.Flags2 |= SMBFLG2_UNICODE;
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capabilities |= CAP_UNICODE;
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}
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if (ses->capabilities & CAP_STATUS32) {
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pSMB->req.hdr.Flags2 |= SMBFLG2_ERR_STATUS;
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capabilities |= CAP_STATUS32;
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}
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if (ses->capabilities & CAP_DFS) {
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pSMB->req.hdr.Flags2 |= SMBFLG2_DFS;
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capabilities |= CAP_DFS;
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}
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/* BB check whether to init vcnum BB */
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return capabilities;
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}
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int
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CIFS_SessSetup(unsigned int xid, struct cifsSesInfo *ses, const int type,
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int * pNTLMv2_flg, const struct nls_table *nls_cp)
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{
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int rc = 0;
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int wct;
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struct smb_hdr *smb_buffer;
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char *bcc_ptr;
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SESSION_SETUP_ANDX *pSMB;
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__u32 capabilities;
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if(ses == NULL)
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return -EINVAL;
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cFYI(1,("SStp type: %d",type));
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if(type < CIFS_NTLM) {
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#ifndef CONFIG_CIFS_WEAK_PW_HASH
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/* LANMAN and plaintext are less secure and off by default.
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So we make this explicitly be turned on in kconfig (in the
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build) and turned on at runtime (changed from the default)
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in proc/fs/cifs or via mount parm. Unfortunately this is
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needed for old Win (e.g. Win95), some obscure NAS and OS/2 */
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return -EOPNOTSUPP;
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#endif
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wct = 10; /* lanman 2 style sessionsetup */
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} else if(type < CIFS_NTLMSSP_NEG)
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wct = 13; /* old style NTLM sessionsetup */
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else /* same size for negotiate or auth, NTLMSSP or extended security */
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wct = 12;
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rc = small_smb_init_no_tc(SMB_COM_SESSION_SETUP_ANDX, wct, ses,
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(void **)&smb_buffer);
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if(rc)
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return rc;
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pSMB = (SESSION_SETUP_ANDX *)smb_buffer;
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capabilities = cifs_ssetup_hdr(ses, pSMB);
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bcc_ptr = pByteArea(smb_buffer);
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if(type > CIFS_NTLM) {
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pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC;
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capabilities |= CAP_EXTENDED_SECURITY;
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pSMB->req.Capabilities = cpu_to_le32(capabilities);
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/* BB set password lengths */
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} else if(type < CIFS_NTLM) /* lanman */ {
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/* no capabilities flags in old lanman negotiation */
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/* pSMB->old_req.PasswordLength = */ /* BB fixme BB */
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} else /* type CIFS_NTLM */ {
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pSMB->req_no_secext.Capabilities = cpu_to_le32(capabilities);
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pSMB->req_no_secext.CaseInsensitivePasswordLength =
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cpu_to_le16(CIFS_SESSION_KEY_SIZE);
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pSMB->req_no_secext.CaseSensitivePasswordLength =
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cpu_to_le16(CIFS_SESSION_KEY_SIZE);
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}
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/* rc = SendReceive2(xid, ses, iov, num_iovecs, &resp_buf_type, 0); */
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/* SMB request buf freed in SendReceive2 */
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return rc;
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}
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#endif /* CONFIG_CIFS_EXPERIMENTAL */
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