source: branches/samba-3.5.x/source3/include/ntdomain.h@ 919

/* 
   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
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   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.
 */

#define prs_init_empty( _ps_, _ctx_, _io_ ) (void) prs_init((_ps_), 0, (_ctx_), (_io_))

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

#define RPC_PARSE_ALIGN 4

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 fragment being returned. This inclues
         * headers, data and authentication footer.
         */
        prs_struct frag;

        /* 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).
         */
        uint8_t *current_in_pdu;

        /*
         * 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;

struct handle_list;

typedef struct pipe_rpc_fns {

        struct pipe_rpc_fns *next, *prev;

        /* RPC function table associated with the current rpc_bind (associated by context) */

        const struct api_struct *cmds;
        int n_cmds;
        uint32 context_id;

} PIPE_RPC_FNS;

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

enum pipe_auth_type { PIPE_AUTH_TYPE_NONE = 0, PIPE_AUTH_TYPE_NTLMSSP, PIPE_AUTH_TYPE_SCHANNEL,
                        PIPE_AUTH_TYPE_SPNEGO_NTLMSSP, PIPE_AUTH_TYPE_KRB5, PIPE_AUTH_TYPE_SPNEGO_KRB5 };

/* 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 dcerpc_AuthLevel auth_level;
        union {
                struct schannel_state *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;

        char client_address[INET6_ADDRSTRLEN];

        struct auth_serversupplied_info *server_info;

        struct ndr_syntax_id syntax;

        /* 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. */

        struct pipe_auth_data auth;

        /*
         * 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;

        /* private data for the interface implementation */
        void *private_data;

} pipes_struct;

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

#endif /* _NT_DOMAIN_H */