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   Unix SMB/CIFS implementation.
   SMB parameters and setup
   Copyright (C) Andrew Tridgell 1992-1997
   Copyright (C) Luke Kenneth Casson Leighton 1996-1997
   Copyright (C) Paul Ashton 1997
   Copyright (C) Jeremy Allison 2000-2004
   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.
   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   GNU General Public License for more details.
   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.

#ifndef _NT_DOMAIN_H /* _NT_DOMAIN_H */
#define _NT_DOMAIN_H 

 * A bunch of stuff that was put into smb.h
 * in the NTDOM branch - it didn't belong there.
typedef struct _prs_struct {
      bool io; /* parsing in or out of data stream */
       * If the (incoming) data is big-endian. On output we are
       * always little-endian.
      bool bigendian_data;
      uint8 align; /* data alignment */
      bool is_dynamic; /* Do we own this memory or not ? */
      uint32 data_offset; /* Current working offset into data. */
      uint32 buffer_size; /* Current allocated size of the buffer. */
      uint32 grow_size; /* size requested via prs_grow() calls */
      char *data_p; /* The buffer itself. */
      TALLOC_CTX *mem_ctx; /* When unmarshalling, use this.... */
      const char *sess_key; /* If we have to do encrypt/decrypt on the fly. */
} prs_struct;

 * Defines for io member of prs_struct.

#define MARSHALL 0
#define UNMARSHALL 1

#define MARSHALLING(ps) (!(ps)->io)
#define UNMARSHALLING(ps) ((ps)->io)

#define RPC_BIG_ENDIAN        1
#define RPC_LITTLE_ENDIAN     0


typedef struct _output_data {
       * Raw RPC output data. This does not include RPC headers or footers.
      prs_struct rdata;

      /* The amount of data sent from the current rdata struct. */
      uint32 data_sent_length;

       * The current PDU being returned. This inclues
       * headers, data and authentication footer.
      unsigned char current_pdu[RPC_MAX_PDU_FRAG_LEN];

      /* The amount of data in the current_pdu buffer. */
      uint32 current_pdu_len;

      /* The amount of data sent from the current PDU. */
      uint32 current_pdu_sent;
} output_data;

typedef struct _input_data {
       * This is the current incoming pdu. The data here
       * is collected via multiple writes until a complete
       * pdu is seen, then the data is copied into the in_data
       * structure. The maximum size of this is 0x1630 (RPC_MAX_PDU_FRAG_LEN).
      unsigned char current_in_pdu[RPC_MAX_PDU_FRAG_LEN];

       * The amount of data needed to complete the in_pdu.
       * If this is zero, then we are at the start of a new
       * pdu.
      uint32 pdu_needed_len;

       * The amount of data received so far in the in_pdu.
       * If this is zero, then we are at the start of a new
       * pdu.
      uint32 pdu_received_len;

       * This is the collection of input data with all
       * the rpc headers and auth footers removed.
       * The maximum length of this (1Mb) is strictly enforced.
      prs_struct data;
} input_data;

 * Handle database - stored per pipe.

struct policy {
      struct policy *next, *prev;

      POLICY_HND pol_hnd;

      void *data_ptr;
      void (*free_fn)(void *);

struct handle_list {
      struct policy *Policy;  /* List of policies. */
      size_t count;                 /* Current number of handles. */
      size_t pipe_ref_count;  /* Number of pipe handles referring to this list. */

/* Domain controller authentication protocol info */
struct dcinfo {
      uint32 sequence; /* "timestamp" from client. */
      DOM_CHAL seed_chal; 
      DOM_CHAL clnt_chal; /* Client credential */
      DOM_CHAL srv_chal;  /* Server credential */
      unsigned char  sess_key[16]; /* Session key - 8 bytes followed by 8 zero bytes */
      unsigned char  mach_pw[16];   /* md4(machine password) */

      fstring mach_acct;  /* Machine name we've authenticated. */

      fstring remote_machine;  /* Machine name we've authenticated. */
      fstring domain;

      bool challenge_sent;
      bool authenticated;

typedef struct pipe_rpc_fns {

      struct pipe_rpc_fns *next, *prev;
      /* RPC function table associated with the current rpc_bind (associated by context) */
      struct api_struct *cmds;
      int n_cmds;
      uint32 context_id;

 * Different auth types we support.
 * Can't keep in sync with wire values as spnego wraps different auth methods.


/* Possible auth levels - keep these in sync with the wire values. */
enum pipe_auth_level { PIPE_AUTH_LEVEL_NONE = 0,
                  PIPE_AUTH_LEVEL_CONNECT = 1,  /* We treat as NONE. */
                  PIPE_AUTH_LEVEL_INTEGRITY = 5,      /* Sign. */
                  PIPE_AUTH_LEVEL_PRIVACY = 6   /* Seal. */

/* auth state for krb5. */
struct kerberos_auth_struct {
      const char *service_principal;
      DATA_BLOB session_key;

/* auth state for schannel. */
struct schannel_auth_struct {
      unsigned char sess_key[16];
      uint32 seq_num;

/* auth state for all bind types. */

struct pipe_auth_data {
      enum pipe_auth_type auth_type; /* switch for union below. */
      enum pipe_auth_level auth_level;
      union {
            struct schannel_auth_struct *schannel_auth;
            AUTH_NTLMSSP_STATE *auth_ntlmssp_state;
/*          struct kerberos_auth_struct *kerberos_auth; TO BE ADDED... */
      } a_u;
      void (*auth_data_free_func)(struct pipe_auth_data *);

 * DCE/RPC-specific samba-internal-specific handling of data on
 * NamedPipes.

typedef struct pipes_struct {
      struct pipes_struct *next, *prev;

      connection_struct *conn;
      uint16 vuid; /* points to the unauthenticated user that opened this pipe. */

      fstring name;
      fstring pipe_srv_name;
      /* linked list of rpc dispatch tables associated 
         with the open rpc contexts */
      PIPE_RPC_FNS *contexts;
      RPC_HDR hdr; /* Incoming RPC header. */
      RPC_HDR_REQ hdr_req; /* Incoming request header. */

      /* This context is used for pipe state storage and is freed when the pipe is closed. */
      TALLOC_CTX *pipe_state_mem_ctx;

      struct pipe_auth_data auth;

      struct dcinfo *dc; /* Keeps the creds data from netlogon. */

       * Windows user info.
      fstring user_name;
      fstring domain;
      fstring wks;

       * Unix user name and credentials used when a pipe is authenticated.

      fstring pipe_user_name;
      struct current_user pipe_user;
      DATA_BLOB session_key;
       * Set to true when an RPC bind has been done on this pipe.
      bool pipe_bound;
       * Set to true when we should return fault PDU's for everything.
      bool fault_state;

       * Set to true when we should return fault PDU's for a bad handle.

      bool bad_handle_fault_state;

       * Set to true when the backend does not support a call.

      bool rng_fault_state;
       * Set to RPC_BIG_ENDIAN when dealing with big-endian PDU's
      bool endian;
       * Struct to deal with multiple pdu inputs.

      input_data in_data;

       * Struct to deal with multiple pdu outputs.

      output_data out_data;

      /* This context is used for PDU data and is freed between each pdu.
            Don't use for pipe state storage. */
      TALLOC_CTX *mem_ctx;

      /* handle database to use on this pipe. */
      struct handle_list *pipe_handles;

} pipes_struct;

typedef struct smb_np_struct {
      struct smb_np_struct *next, *prev;
      int pnum;
      connection_struct *conn;
      uint16 vuid; /* points to the unauthenticated user that opened this pipe. */
      bool open; /* open connection */
      uint16 device_state;
      uint16 priority;
      char *name;

      /* When replying to an SMBtrans, this is the maximum amount of
           data that can be sent in the initial reply. */
      int max_trans_reply;

       * NamedPipe state information.
       * (e.g. typecast a np_struct, above).
      void *np_state;

       * NamedPipe functions, to be called to perform
       * Named Pipe transactions on request from an
       * SMB client.

      /* call to create a named pipe connection.
       * returns: state information representing the connection.
       *          is stored in np_state, above.
      void *   (*namedpipe_create)(const char *pipe_name, 
                                connection_struct *conn, uint16 vuid);

      /* call to perform a write / read namedpipe transaction.
       * TransactNamedPipe is weird: it returns whether there
       * is more data outstanding to be read, and the
       * caller is expected to take note and follow up with
       * read requests.
      ssize_t  (*namedpipe_transact)(void *np_state,
                                     char *data, int len,
                                     char *rdata, int rlen,
                                     bool *pipe_outstanding);

      /* call to perform a write namedpipe operation
      ssize_t  (*namedpipe_write)(void * np_state,
                                  char *data, size_t n);

      /* call to perform a read namedpipe operation.
       * NOTE: the only reason that the pipe_outstanding
       * argument is here is because samba does not use
       * the namedpipe_transact function yet: instead,
       * it performs the same as what namedpipe_transact
       * does - a write, followed by a read.
       * when samba is modified to use namedpipe_transact,
       * the pipe_outstanding argument may be removed.
      ssize_t  (*namedpipe_read)(void * np_state,
                                 char *data, size_t max_len,
                                 bool *pipe_outstanding);

      /* call to close a namedpipe.
       * function is expected to perform all cleanups
       * necessary, free all memory etc.
       * returns True if cleanup was successful (not that
       * we particularly care).
      bool     (*namedpipe_close)(void * np_state);

} smb_np_struct;

struct api_struct {  
      const char *name;
      uint8 opnum;
      bool (*fn) (pipes_struct *);

typedef struct {  
      uint32 rid;
      const char *name;
} rid_name;

 * higher order functions for use with msrpc client code

#define PRINT_INFO_FN(fn)\
        void (*fn)(const char*, uint32, uint32, void  *const *const)
#define JOB_INFO_FN(fn)\
        void (*fn)(const char*, const char*, uint32, uint32, void *const *const)

/* end higher order functions */

typedef struct {
      uint32 size;
      prs_struct prs;
      uint32 struct_start;
      uint32 string_at_end;

#endif /* _NT_DOMAIN_H */

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