277 lines
6 KiB
C
277 lines
6 KiB
C
/*++
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Copyright (c) 1991 Microsoft Corporation
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Module Name:
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lmhosts.h
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Abstract:
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This is the header file for the lmhosts facility of the nbt driver.
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Author:
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Eric Chin (ericc) April 28, 1992
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Revision History:
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--*/
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#ifndef _LMHOSTS_H_
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#define _LMHOSTS_H_
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//
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// Configuration Defaults
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//
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// Only the first MAX_PARSE_BYTES of each line in the lmhosts file is
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// examined.
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//
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#define DATABASEPATH "\\SystemRoot\\nt\\system32\\drivers\\etc"
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#define LMHOSTSFILE "lmhosts" // name of lmhosts file
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#define MAX_FILE_IO_THREADS 1 // threads to read
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// lmhosts file
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#ifdef VXD
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#define DEF_PRELOAD 100 // Default entries to preload
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#define MAX_PRELOAD 500 // Max cache entries to preload
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#else
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#define DEF_PRELOAD 1000 // Default entries to preload
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#define MAX_PRELOAD 2000 // max cache entries to preload
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#endif
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#define MAX_MEMBERS_INTERNET_GROUP 50 // max size of internet group
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//
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// Reserved Keywords in the lmhosts File
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//
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#define BEG_ALT_TOKEN "#BEGIN_ALTERNATE" // alternate block
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#define DOMAIN_TOKEN "#DOM:" // specifies LM domain
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#define END_ALT_TOKEN "#END_ALTERNATE" // alternate block
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#define INCLUDE_TOKEN "#INCLUDE" // include a file
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#define PRELOAD_TOKEN "#PRE" // preload this entry
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#define NOFNR_TOKEN "#NOFNR" // no find name request
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//
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// Macro Definitions
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//
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//#define min(x, y) ((x) < (y) ? (x) : (y))
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//
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// Public Definitions
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//
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//
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// For each file that is opened, a LM_FILE object is created.
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//
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typedef struct _LM_FILE
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{
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#ifndef VXD
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KSPIN_LOCK f_lock; // protects this object
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LONG f_refcount; // current no of references
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#endif
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HANDLE f_handle; // handle from ZwOpenFile()
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LONG f_lineno; // current line number
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#ifndef VXD
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LARGE_INTEGER f_fileOffset; // current offset into file
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PUCHAR f_current; // buffer position to read
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PUCHAR f_limit; // last byte + 1 of buffer
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PUCHAR f_buffer; // start of buffer
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#else
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PUCHAR f_linebuffer; // line buffer
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PUCHAR f_buffer; // file buffer
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BOOL f_EOF ; // TRUE if EOF
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ULONG f_CurPos ; // Current Pos. in File Buffer
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ULONG f_EndOfData ; // Last valid data in File Buffer
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PUCHAR f_BackUp; // copy here In case of #INCLUDE
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#endif
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} LM_FILE, *PLM_FILE;
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//
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// The LM_IPADDRESS_LIST object contains pertinent information about a
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// group of ip addresses.
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//
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//
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typedef struct _LM_IPADDRESS_LIST
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{
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KSPIN_LOCK i_rcntlock; // protects i_refcount
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LONG i_refcount; // current no of references
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KSPIN_LOCK i_lock; // only when adding to i_addrs[]
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int i_maxaddrs; // max capacity of i_addrs[]
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int i_numaddrs; // current no of ip addresses
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unsigned long i_addrs[1]; // the array of ip addresses
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} LM_IPADDRESS_LIST, *PLM_IPADDRESS_LIST;
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//
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// An LM_PARSE_FUNCTION may be called recursively to handle #INCLUDE
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// directives in an lmhosts file.
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//
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//
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typedef unsigned long (* LM_PARSE_FUNCTION) (
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IN PUCHAR path, // file to parse
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IN PUCHAR target OPTIONAL, // NetBIOS name
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IN CHAR RecurseLevel, // process #INCLUDE's ?
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OUT BOOLEAN *NoFindName // do not do find name
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);
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//
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// The LM_WORK_ITEM object is the interface between lm_lookup() and
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// LmFindName().
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//
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//
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typedef struct _LM_WORK_ITEM
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{ // work for io thread(s)
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LIST_ENTRY w_list; // links to other items
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// mblk_t *w_mp; // STREAMS buffer
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} LM_WORK_ITEM, *PLM_WORK_ITEM;
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//
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// Private Function Prototypes
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//
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int
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LmAddToDomAddrList (
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IN PUCHAR name,
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IN unsigned long inaddr
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);
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NTSTATUS
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LmCloseFile (
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IN PLM_FILE handle
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);
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NTSTATUS
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LmCreateThreads (
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IN int nthreads
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);
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NTSTATUS
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LmDeleteAllDomAddrLists (
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VOID
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);
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VOID
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LmDerefDomAddrList(
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PLM_IPADDRESS_LIST arrayp
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);
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char *
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LmExpandName (
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OUT PUCHAR dest,
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IN PUCHAR source,
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IN UCHAR last
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);
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PUCHAR
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LmFgets (
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IN PLM_FILE pfile,
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OUT int *nbytes
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);
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NTSTATUS
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LmFindName (
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VOID
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);
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PLM_IPADDRESS_LIST
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LmGetDomAddrList (
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PUCHAR name
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);
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unsigned long
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LmGetIpAddr (
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IN PUCHAR path,
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IN PUCHAR target,
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IN CHAR RecurseDepth,
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OUT BOOLEAN *NoFindName
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);
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NTSTATUS
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LmGetFullPath (
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IN PUCHAR target,
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OUT PUCHAR *path
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);
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unsigned long
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LmInclude(
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IN PUCHAR file,
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IN LM_PARSE_FUNCTION function,
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IN PUCHAR argument,
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IN CHAR RecurseDepth,
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OUT BOOLEAN *NoFindName
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);
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NTSTATUS
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LmInitDomAddrLists (
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VOID
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);
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VOID
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LmLogOpenError (
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IN PUCHAR path,
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IN NTSTATUS unused
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);
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VOID
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LmLogSyntaxError (
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IN LONG lineno
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);
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PLM_FILE
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LmOpenFile (
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IN PUCHAR path
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);
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int
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LmPreloadEntry (
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IN PUCHAR name,
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IN unsigned long inaddr,
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IN unsigned int NoFNR
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);
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BOOLEAN
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LmPutCacheEntry (
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// IN mblk_t *mp,
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IN unsigned char *name,
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IN unsigned long inaddr,
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IN unsigned int ttl,
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IN LONG nb_flags,
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IN unsigned int NoFNR
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);
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NTSTATUS
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LmTerminateThreads(
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VOID
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);
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//
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// Functions Imported from ..\common
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//
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extern unsigned long
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inet_addr(
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IN char *cp
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);
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#endif // _LMHOSTS_H_
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