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456f51bcbe
the schannel code, but I've included that anyway. :-)
This patch revives the client-side NTLMSSP support for RPC named pipes
in Samba, and cleans up the client and server schannel code. The use of the
new code is enabled by the 'sign', 'seal' and 'schannel' commands in
rpcclient.
The aim was to prove that our separate NTLMSSP client library actually
implements NTLMSSP signing and sealing as per Microsoft's NTLMv1 implementation,
in the hope that knowing this will assist us in correctly implementing
NTLMSSP signing for SMB packets. (Still not yet functional)
This patch replaces the NTLMSSP implementation in rpc_client/cli_pipe.c with
calls to libsmb/ntlmssp.c. In the process, we have gained the ability to
use the more secure NT password, and the ability to sign-only, instead of
having to seal the pipe connection. (Previously we were limited to sealing,
and could only use the LM-password derived key).
Our new client-side NTLMSSP code also needed alteration to cope with our
comparatively simple server-side implementation. A future step is to replace
it with calls to the same NTLMSSP library.
Also included in this patch is the schannel 'sign only' patch I submitted to
the team earlier. While not enabled (and not functional, at this stage) the
work in this patch makes the code paths *much* easier to follow. I have also
included similar hooks in rpccleint to allow the use of schannel on *any* pipe.
rpcclient now defaults to not using schannel (or any other extra per-pipe
authenticiation) for any connection. The 'schannel' command enables schannel
for all pipes until disabled.
This code is also much more secure than the previous code, as changes to our
cli_pipe routines ensure that the authentication footer cannot be removed
by an attacker, and more error states are correctly handled.
(The same needs to be done to our server)
Andrew Bartlett
(This used to be commit 5472ddc9ea
)
182 lines
4.5 KiB
C
182 lines
4.5 KiB
C
/*
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Unix SMB/CIFS implementation.
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SMB parameters and setup
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Copyright (C) Andrew Tridgell 1992-1998
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Copyright (C) Luke Kenneth Casson Leighton 1996-1998
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Copyright (C) Jeremy Allison 1998
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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 2 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, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef _CLIENT_H
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#define _CLIENT_H
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/* the client asks for a smaller buffer to save ram and also to get more
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overlap on the wire. This size gives us a nice read/write size, which
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will be a multiple of the page size on almost any system */
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#define CLI_BUFFER_SIZE (0xFFFF)
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/*
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* These definitions depend on smb.h
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*/
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typedef struct file_info
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{
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SMB_BIG_UINT size;
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uint16 mode;
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uid_t uid;
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gid_t gid;
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/* these times are normally kept in GMT */
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time_t mtime;
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time_t atime;
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time_t ctime;
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pstring name;
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char short_name[13*3]; /* the *3 is to cope with multi-byte */
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} file_info;
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struct print_job_info
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{
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uint16 id;
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uint16 priority;
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size_t size;
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fstring user;
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fstring name;
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time_t t;
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};
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typedef struct smb_sign_info {
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void (*sign_outgoing_message)(struct cli_state *cli);
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BOOL (*check_incoming_message)(struct cli_state *cli);
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void (*free_signing_context)(struct cli_state *cli);
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void *signing_context;
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BOOL negotiated_smb_signing;
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BOOL allow_smb_signing;
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BOOL doing_signing;
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BOOL mandetory_signing;
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} smb_sign_info;
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struct cli_state {
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int port;
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int fd;
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int smb_rw_error; /* Copy of last read or write error. */
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uint16 cnum;
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uint16 pid;
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uint16 mid;
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uint16 vuid;
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int protocol;
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int sec_mode;
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int rap_error;
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int privileges;
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fstring desthost;
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fstring user_name;
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fstring domain;
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/*
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* The following strings are the
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* ones returned by the server if
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* the protocol > NT1.
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*/
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fstring server_type;
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fstring server_os;
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fstring server_domain;
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fstring share;
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fstring dev;
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struct nmb_name called;
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struct nmb_name calling;
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fstring full_dest_host_name;
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struct in_addr dest_ip;
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struct pwd_info pwd;
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DATA_BLOB secblob; /* cryptkey or negTokenInit */
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uint32 sesskey;
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int serverzone;
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uint32 servertime;
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int readbraw_supported;
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int writebraw_supported;
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int timeout; /* in milliseconds. */
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size_t max_xmit;
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size_t max_mux;
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char *outbuf;
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char *inbuf;
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unsigned int bufsize;
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int initialised;
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int win95;
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uint32 capabilities;
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TALLOC_CTX *mem_ctx;
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smb_sign_info sign_info;
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/* the session key for this CLI, outside
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any per-pipe authenticaion */
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unsigned char user_session_key[16];
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/*
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* Only used in NT domain calls.
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*/
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int pipe_idx; /* Index (into list of known pipes)
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of the pipe we're talking to,
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if any */
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uint16 nt_pipe_fnum; /* Pipe handle. */
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/* Secure pipe parameters */
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int pipe_auth_flags;
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uint16 saved_netlogon_pipe_fnum; /* The "first" pipe to get
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the session key for the
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schannel. */
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struct netsec_auth_struct auth_info;
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NTLMSSP_CLIENT_STATE *ntlmssp_pipe_state;
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unsigned char sess_key[16]; /* Current session key. */
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DOM_CRED clnt_cred; /* Client credential. */
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fstring mach_acct; /* MYNAME$. */
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fstring srv_name_slash; /* \\remote server. */
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fstring clnt_name_slash; /* \\local client. */
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uint16 max_xmit_frag;
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uint16 max_recv_frag;
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BOOL use_kerberos;
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BOOL use_spnego;
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BOOL use_oplocks; /* should we use oplocks? */
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BOOL use_level_II_oplocks; /* should we use level II oplocks? */
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/* a oplock break request handler */
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BOOL (*oplock_handler)(struct cli_state *cli, int fnum, unsigned char level);
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BOOL force_dos_errors;
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/* was this structure allocated by cli_initialise? If so, then
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free in cli_shutdown() */
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BOOL allocated;
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/* Name of the pipe we're talking to, if any */
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fstring pipe_name;
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};
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#define CLI_FULL_CONNECTION_DONT_SPNEGO 0x0001
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#define CLI_FULL_CONNECTION_USE_KERBEROS 0x0002
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#define CLI_FULL_CONNECTION_ANNONYMOUS_FALLBACK 0x0004
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#endif /* _CLIENT_H */
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