345 lines
8.2 KiB
C
345 lines
8.2 KiB
C
/*++
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Copyright (c) 1992-1996 Microsoft Corporation
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Module Name:
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srvc_lm.c
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Abstract:
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This file contains MIB_srvc_lmget, which actually call lan manager
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for the srvce table, copies it into structures, and sorts it to
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return ready to use by the higher level functions.
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Environment:
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User Mode - Win32
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Revision History:
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10-May-1996 DonRyan
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Removed banner from Technology Dynamics, Inc.
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--*/
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//--------------------------- WINDOWS DEPENDENCIES --------------------------
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//--------------------------- STANDARD DEPENDENCIES -- #include<xxxxx.h> ----
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#ifdef WIN32
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#include <windows.h>
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#include <lm.h>
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#endif
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#include <tchar.h>
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#include <string.h>
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#include <search.h>
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#include <stdlib.h>
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#include <time.h>
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//--------------------------- MODULE DEPENDENCIES -- #include"xxxxx.h" ------
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#include "mib.h"
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#include "mibfuncs.h"
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#include "srvc_tbl.h"
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#include "lmcache.h"
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//--------------------------- SELF-DEPENDENCY -- ONE #include"module.h" -----
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//--------------------------- PUBLIC VARIABLES --(same as in module.h file)--
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//--------------------------- PRIVATE CONSTANTS -----------------------------
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#define SafeBufferFree(x) if(NULL != x) NetApiBufferFree( x )
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#define SafeFree(x) if(NULL != x) SnmpUtilMemFree( x )
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//--------------------------- PRIVATE STRUCTS -------------------------------
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//--------------------------- PRIVATE VARIABLES -----------------------------
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//--------------------------- PRIVATE PROTOTYPES ----------------------------
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int __cdecl srvc_entry_cmp(
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IN const SRVC_ENTRY *A,
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IN const SRVC_ENTRY *B
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) ;
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void build_srvc_entry_oids( );
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//--------------------------- PRIVATE PROCEDURES ----------------------------
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//--------------------------- PUBLIC PROCEDURES -----------------------------
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//
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// MIB_srvc_lmget
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// Retrieve srvcion table information from Lan Manager.
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// If not cached, sort it and then
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// cache it.
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//
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// Notes:
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//
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// Return Codes:
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// SNMPAPI_NOERROR
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// SNMPAPI_ERROR
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//
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// Error Codes:
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// None.
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//
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SNMPAPI MIB_srvcs_lmget(
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)
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{
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DWORD entriesread;
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DWORD totalentries;
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LPBYTE bufptr;
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unsigned lmCode;
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unsigned i;
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SERVICE_INFO_2 *DataTable;
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SRVC_ENTRY *MIB_SrvcTableElement ;
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int First_of_this_block;
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time_t curr_time ;
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SNMPAPI nResult = SNMPAPI_NOERROR;
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DWORD resumehandle=0;
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#ifdef UNICODE
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LPSTR stream;
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#endif
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time(&curr_time); // get the time
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//
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//
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// If cached, return piece of info.
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//
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//
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if((NULL != cache_table[C_SRVC_TABLE].bufptr) &&
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(curr_time <
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(cache_table[C_SRVC_TABLE].acquisition_time
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+ cache_expire[C_SRVC_TABLE] ) ) )
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{ // it has NOT expired!
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goto Exit ; // the global table is valid
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}
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//
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//
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// Do network call to gather information and put it in a nice array
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//
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//
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//
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// remember to free the existing data
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//
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MIB_SrvcTableElement = MIB_SrvcTable.Table ;
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// iterate over the whole table
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for(i=0; i<MIB_SrvcTable.Len ;i++)
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{
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// free any alloc'ed elements of the structure
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SnmpUtilOidFree(&(MIB_SrvcTableElement->Oid));
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SafeFree(MIB_SrvcTableElement->svSvcName.stream);
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MIB_SrvcTableElement ++ ; // increment table entry
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}
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SafeFree(MIB_SrvcTable.Table) ; // free the base Table
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MIB_SrvcTable.Table = NULL ; // just for safety
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MIB_SrvcTable.Len = 0 ; // just for safety
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First_of_this_block = 0;
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do { // as long as there is more data to process
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lmCode =
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NetServiceEnum( NULL, // local server
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2, // level 2
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&bufptr, // data structure to return
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MAX_PREFERRED_LENGTH,
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&entriesread,
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&totalentries,
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&resumehandle // resume handle
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);
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DataTable = (SERVICE_INFO_2 *) bufptr ;
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if((NERR_Success == lmCode) || (ERROR_MORE_DATA == lmCode))
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{ // valid so process it, otherwise error
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if(0 == MIB_SrvcTable.Len) { // 1st time, alloc the whole table
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// alloc the table space
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MIB_SrvcTable.Table = SnmpUtilMemAlloc(totalentries *
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sizeof(SRVC_ENTRY) );
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// prefix bugs 445185 and 445186
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if (MIB_SrvcTable.Table == NULL) {
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// free all of the lan man data
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SafeBufferFree( bufptr ) ;
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// Signal error
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nResult = SNMPAPI_ERROR;
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goto Exit;
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}
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}
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MIB_SrvcTableElement = MIB_SrvcTable.Table + First_of_this_block ;
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for(i=0; i<entriesread; i++) { // once for each entry in the buffer
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// increment the entry number
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MIB_SrvcTable.Len ++;
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// Stuff the data into each item in the table
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MIB_SrvcTableElement->svSvcName.dynamic = TRUE;
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#ifdef UNICODE
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if (SnmpUtilUnicodeToUTF8(
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&MIB_SrvcTableElement->svSvcName.stream,
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DataTable->svci2_display_name,
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TRUE))
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{
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MIB_SrvcTableElement->svSvcName.length = 0;
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MIB_SrvcTableElement->svSvcName.stream = NULL;
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}
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else
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{
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MIB_SrvcTableElement->svSvcName.length =
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strlen(MIB_SrvcTableElement->svSvcName.stream);
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}
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#else
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// service name
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MIB_SrvcTableElement->svSvcName.stream = SnmpUtilMemAlloc (
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strlen( DataTable->svci2_display_name ) + 1) ;
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memcpy( MIB_SrvcTableElement->svSvcName.stream,
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DataTable->svci2_display_name,
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strlen( DataTable->svci2_display_name ) + 1) ;
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MIB_SrvcTableElement->svSvcName.length =
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strlen( MIB_SrvcTableElement->svSvcName.stream )) ;
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#endif
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MIB_SrvcTableElement->svSvcInstalledState =
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(DataTable->svci2_status & 0x03) + 1;
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MIB_SrvcTableElement->svSvcOperatingState =
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((DataTable->svci2_status>>2) & 0x03) + 1;
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MIB_SrvcTableElement->svSvcCanBeUninstalled =
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((DataTable->svci2_status>>4) & 0x01) + 1;
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MIB_SrvcTableElement->svSvcCanBePaused =
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((DataTable->svci2_status>>5) & 0x01) + 1;
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DataTable ++ ; // advance pointer to next srvc entry in buffer
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MIB_SrvcTableElement ++ ; // and table entry
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} // for each entry in the data table
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// free all of the lan man data
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SafeBufferFree( bufptr ) ;
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// indicate where to start adding on next pass, if any
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First_of_this_block = i ;
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} // if data is valid to process
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else
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{
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// Signal error
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nResult = SNMPAPI_ERROR;
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goto Exit;
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}
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} while (ERROR_MORE_DATA == lmCode) ;
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// iterate over the table populating the Oid field
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build_srvc_entry_oids();
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// Sort the table information using MSC QuickSort routine
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qsort( &MIB_SrvcTable.Table[0], MIB_SrvcTable.Len,
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sizeof(SRVC_ENTRY), srvc_entry_cmp );
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//
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//
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// Cache table
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//
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//
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if(0 != MIB_SrvcTable.Len) {
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cache_table[C_SRVC_TABLE].acquisition_time = curr_time ;
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cache_table[C_SRVC_TABLE].bufptr = bufptr ;
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}
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//
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//
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// Return piece of information requested
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//
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//
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Exit:
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return nResult;
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} // MIB_srvc_get
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//
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// MIB_srvc_cmp
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// Routine for sorting the srvcion table.
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//
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// Notes:
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//
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// Return Codes:
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// SNMPAPI_NOERROR
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// SNMPAPI_ERROR
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//
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// Error Codes:
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// None.
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//
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int __cdecl srvc_entry_cmp(
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IN const SRVC_ENTRY *A,
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IN const SRVC_ENTRY *B
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)
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{
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// Compare the OID's
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return SnmpUtilOidCmp( (AsnObjectIdentifier *)&A->Oid,
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(AsnObjectIdentifier *)&B->Oid );
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} // MIB_srvc_cmp
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//
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// None.
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//
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void build_srvc_entry_oids(
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)
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{
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AsnOctetString OSA ;
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SRVC_ENTRY *SrvcEntry ;
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unsigned i;
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// start pointer at 1st guy in the table
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SrvcEntry = MIB_SrvcTable.Table ;
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// now iterate over the table, creating an oid for each entry
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for( i=0; i<MIB_SrvcTable.Len ; i++) {
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// for each entry in the srvc table
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OSA.stream = SrvcEntry->svSvcName.stream;
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OSA.length = SrvcEntry->svSvcName.length;
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OSA.dynamic = FALSE;
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// Make the entry's OID from string index
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MakeOidFromStr( &OSA, &SrvcEntry->Oid );
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SrvcEntry++; // point to the next guy in the table
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} // for
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} // build_srvc_entry_oids
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//-------------------------------- END --------------------------------------
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