diff options
Diffstat (limited to 'fs/cifs/ntlmssp.c')
| -rw-r--r-- | fs/cifs/ntlmssp.c | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/fs/cifs/ntlmssp.c b/fs/cifs/ntlmssp.c new file mode 100644 index 000000000000..78866f925747 --- /dev/null +++ b/fs/cifs/ntlmssp.c @@ -0,0 +1,129 @@ +/* + * fs/cifs/ntlmssp.h + * + * Copyright (c) International Business Machines Corp., 2006 + * Author(s): Steve French (sfrench@us.ibm.com) + * + * This library is free software; you can redistribute it and/or modify + * it under the terms of the GNU Lesser General Public License as published + * by the Free Software Foundation; either version 2.1 of the License, or + * (at your option) any later version. + * + * This library is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See + * the GNU Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public License + * along with this library; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include "cifspdu.h" +#include "cifsglob.h" +#include "cifsproto.h" +#include "cifs_unicode.h" +#include "cifs_debug.h" +#include "ntlmssp.h" +#include "nterr.h" + +#ifdef CONFIG_CIFS_EXPERIMENTAL +static __u32 cifs_ssetup_hdr(struct cifsSesInfo *ses, SESSION_SETUP_ANDX *pSMB) +{ + __u32 capabilities = 0; + + /* init fields common to all four types of SessSetup */ + /* note that header is initialized to zero in header_assemble */ + pSMB->req.AndXCommand = 0xFF; + pSMB->req.MaxBufferSize = cpu_to_le16(ses->server->maxBuf); + pSMB->req.MaxMpxCount = cpu_to_le16(ses->server->maxReq); + + /* Now no need to set SMBFLG_CASELESS or obsolete CANONICAL PATH */ + + /* BB verify whether signing required on neg or just on auth frame + (and NTLM case) */ + + capabilities = CAP_LARGE_FILES | CAP_NT_SMBS | CAP_LEVEL_II_OPLOCKS | + CAP_LARGE_WRITE_X | CAP_LARGE_READ_X; + + if(ses->server->secMode & (SECMODE_SIGN_REQUIRED | SECMODE_SIGN_ENABLED)) + pSMB->req.hdr.Flags2 |= SMBFLG2_SECURITY_SIGNATURE; + + if (ses->capabilities & CAP_UNICODE) { + pSMB->req.hdr.Flags2 |= SMBFLG2_UNICODE; + capabilities |= CAP_UNICODE; + } + if (ses->capabilities & CAP_STATUS32) { + pSMB->req.hdr.Flags2 |= SMBFLG2_ERR_STATUS; + capabilities |= CAP_STATUS32; + } + if (ses->capabilities & CAP_DFS) { + pSMB->req.hdr.Flags2 |= SMBFLG2_DFS; + capabilities |= CAP_DFS; + } + + /* BB check whether to init vcnum BB */ + return capabilities; +} +int +CIFS_SessSetup(unsigned int xid, struct cifsSesInfo *ses, const int type, + int * pNTLMv2_flg, const struct nls_table *nls_cp) +{ + int rc = 0; + int wct; + struct smb_hdr *smb_buffer; + char *bcc_ptr; + SESSION_SETUP_ANDX *pSMB; + __u32 capabilities; + + if(ses == NULL) + return -EINVAL; + + cFYI(1,("SStp type: %d",type)); + if(type < CIFS_NTLM) { +#ifndef CONFIG_CIFS_WEAK_PW_HASH + /* LANMAN and plaintext are less secure and off by default. + So we make this explicitly be turned on in kconfig (in the + build) and turned on at runtime (changed from the default) + in proc/fs/cifs or via mount parm. Unfortunately this is + needed for old Win (e.g. Win95), some obscure NAS and OS/2 */ + return -EOPNOTSUPP; +#endif + wct = 10; /* lanman 2 style sessionsetup */ + } else if(type < CIFS_NTLMSSP_NEG) + wct = 13; /* old style NTLM sessionsetup */ + else /* same size for negotiate or auth, NTLMSSP or extended security */ + wct = 12; + + rc = small_smb_init_no_tc(SMB_COM_SESSION_SETUP_ANDX, wct, ses, + (void **)&smb_buffer); + if(rc) + return rc; + + pSMB = (SESSION_SETUP_ANDX *)smb_buffer; + + capabilities = cifs_ssetup_hdr(ses, pSMB); + bcc_ptr = pByteArea(smb_buffer); + if(type > CIFS_NTLM) { + pSMB->req.hdr.Flags2 |= SMBFLG2_EXT_SEC; + capabilities |= CAP_EXTENDED_SECURITY; + pSMB->req.Capabilities = cpu_to_le32(capabilities); + /* BB set password lengths */ + } else if(type < CIFS_NTLM) /* lanman */ { + /* no capabilities flags in old lanman negotiation */ + /* pSMB->old_req.PasswordLength = */ /* BB fixme BB */ + } else /* type CIFS_NTLM */ { + pSMB->req_no_secext.Capabilities = cpu_to_le32(capabilities); + pSMB->req_no_secext.CaseInsensitivePasswordLength = + cpu_to_le16(CIFS_SESSION_KEY_SIZE); + pSMB->req_no_secext.CaseSensitivePasswordLength = + cpu_to_le16(CIFS_SESSION_KEY_SIZE); + } + + +/* rc = SendReceive2(xid, ses, iov, num_iovecs, &resp_buf_type, 0); */ + /* SMB request buf freed in SendReceive2 */ + + return rc; +} +#endif /* CONFIG_CIFS_EXPERIMENTAL */ |