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/*++
Copyright (c) 1991 Microsoft Corporation
Module Name:
lmhosts.h
Abstract:
This is the header file for the lmhosts facility of the nbt driver.
Author:
Eric Chin (ericc) April 28, 1992
Revision History:
--*/
#ifndef _LMHOSTS_H_
#define _LMHOSTS_H_
//
// Configuration Defaults
//
// Only the first MAX_PARSE_BYTES of each line in the lmhosts file is
// examined.
//
#define DATABASEPATH "\\SystemRoot\\nt\\system32\\drivers\\etc"
#define LMHOSTSFILE "lmhosts" // name of lmhosts file
#define MAX_FILE_IO_THREADS 1 // threads to read
// lmhosts file
#ifdef VXD
#define MAX_PRELOAD 100 // max cache entries
// to preload
#else
#define MAX_PRELOAD 1000 // max cache entries
// to preload
#endif
#define SPECIAL_GROUP_SUFFIX 0x1C // for netlogon and
// the browser
#define SPECIAL_BROWSER_SUFFIX 0x1D // for the browser
#define MAX_MEMBERS_INTERNET_GROUP 50 // max size of internet group
//
// Reserved Keywords in the lmhosts File
//
#define BEG_ALT_TOKEN "#BEGIN_ALTERNATE" // alternate block
#define DOMAIN_TOKEN "#DOM:" // specifies LM domain
#define END_ALT_TOKEN "#END_ALTERNATE" // alternate block
#define INCLUDE_TOKEN "#INCLUDE" // include a file
#define PRELOAD_TOKEN "#PRE" // preload this entry
#define NOFNR_TOKEN "#NOFNR" // no find name request
//
// Macro Definitions
//
//#define min(x, y) ((x) < (y) ? (x) : (y))
//
// Public Definitions
//
//
// For each file that is opened, a LM_FILE object is created.
//
typedef struct _LM_FILE
{
#ifndef VXD
KSPIN_LOCK f_lock; // protects this object
LONG f_refcount; // current no of references
#endif
HANDLE f_handle; // handle from ZwOpenFile()
LONG f_lineno; // current line number
#ifndef VXD
LARGE_INTEGER f_fileOffset; // current offset into file
PUCHAR f_current; // buffer position to read
PUCHAR f_limit; // last byte + 1 of buffer
PUCHAR f_buffer; // start of buffer
#else
PUCHAR f_linebuffer; // line buffer
PUCHAR f_buffer; // file buffer
BOOL f_EOF ; // TRUE if EOF
ULONG f_CurPos ; // Current Pos. in File Buffer
ULONG f_EndOfData ; // Last valid data in File Buffer
PUCHAR f_BackUp; // copy here In case of #INCLUDE
#endif
} LM_FILE, *PLM_FILE;
//
// The LM_IPADDRESS_LIST object contains pertinent information about a
// group of ip addresses.
//
//
typedef struct _LM_IPADDRESS_LIST
{
KSPIN_LOCK i_rcntlock; // protects i_refcount
LONG i_refcount; // current no of references
KSPIN_LOCK i_lock; // only when adding to i_addrs[]
int i_maxaddrs; // max capacity of i_addrs[]
int i_numaddrs; // current no of ip addresses
unsigned long i_addrs[1]; // the array of ip addresses
} LM_IPADDRESS_LIST, *PLM_IPADDRESS_LIST;
//
// An LM_PARSE_FUNCTION may be called recursively to handle #INCLUDE
// directives in an lmhosts file.
//
//
typedef unsigned long (* LM_PARSE_FUNCTION) (
IN PUCHAR path, // file to parse
IN PUCHAR target OPTIONAL, // NetBIOS name
IN BOOLEAN recurse, // process #INCLUDE's ?
OUT BOOLEAN *NoFindName // do not do find name
);
//
// The LM_WORK_ITEM object is the interface between lm_lookup() and
// LmFindName().
//
//
typedef struct _LM_WORK_ITEM
{ // work for io thread(s)
LIST_ENTRY w_list; // links to other items
// mblk_t *w_mp; // STREAMS buffer
} LM_WORK_ITEM, *PLM_WORK_ITEM;
//
// Private Function Prototypes
//
int
LmAddToDomAddrList (
IN PUCHAR name,
IN unsigned long inaddr
);
NTSTATUS
LmCloseFile (
IN PLM_FILE handle
);
NTSTATUS
LmCreateThreads (
IN int nthreads
);
NTSTATUS
LmDeleteAllDomAddrLists (
VOID
);
VOID
LmDerefDomAddrList(
PLM_IPADDRESS_LIST arrayp
);
char *
LmExpandName (
OUT PUCHAR dest,
IN PUCHAR source,
IN UCHAR last
);
PUCHAR
LmFgets (
IN PLM_FILE pfile,
OUT int *nbytes
);
NTSTATUS
LmFindName (
VOID
);
PLM_IPADDRESS_LIST
LmGetDomAddrList (
PUCHAR name
);
unsigned long
LmGetIpAddr (
IN PUCHAR path,
IN PUCHAR target,
IN BOOLEAN recurse,
OUT BOOLEAN *NoFindName
);
NTSTATUS
LmGetFullPath (
IN PUCHAR target,
OUT PUCHAR *path
);
unsigned long
LmInclude(
IN PUCHAR file,
IN LM_PARSE_FUNCTION function,
IN PUCHAR argument,
OUT BOOLEAN *NoFindName
);
NTSTATUS
LmInitDomAddrLists (
VOID
);
VOID
LmLogOpenError (
IN PUCHAR path,
IN NTSTATUS unused
);
VOID
LmLogSyntaxError (
IN LONG lineno
);
PLM_FILE
LmOpenFile (
IN PUCHAR path
);
int
LmPreloadEntry (
IN PUCHAR name,
IN unsigned long inaddr,
IN unsigned int NoFNR
);
BOOLEAN
LmPutCacheEntry (
// IN mblk_t *mp,
IN unsigned char *name,
IN unsigned long inaddr,
IN unsigned int ttl,
IN LONG nb_flags,
IN unsigned int NoFNR
);
NTSTATUS
LmTerminateThreads(
VOID
);
//
// Functions Imported from ..\common
//
extern unsigned long
inet_addr(
IN char *cp
);
#endif // _LMHOSTS_H_
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