78 lines
2.7 KiB
C
78 lines
2.7 KiB
C
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/*++
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Copyright (c) 1990 Microsoft Corporation
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Module Name:
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ALERT.C
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Abstract:
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This file contains the routine that sends the alert to the admin.
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Author:
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Rajen Shah (rajens) 28-Aug-1991
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--*/
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// INCLUDES
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#include <eventp.h>
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#include <string.h>
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#include <lmalert.h> // LAN Manager alert structures
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BOOL SendAdminAlert(ULONG MessageID, ULONG NumStrings, UNICODE_STRING* pStrings)
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/*++
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Routine Description:
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This routine raises an ADMIN alert with the message specified.
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Arguments:
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MessageID - Message ID.
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NumStrings - Number of replacement strings.
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pStrings - Array of UNICODE_STRING Replacement strings.
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Return Value:
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NONE
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Note:
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This routine dynamically links to netapi32.dll to avoid a build dependency.
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--*/
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{
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typedef DWORD(*ALERT_FNC_PTR)(IN LPTSTR AlertEventName, IN LPVOID VariableInfo, IN DWORD VariableInfoSize, IN LPTSTR ServiceName);
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NET_API_STATUS NetStatus;
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BYTE AlertBuffer[ELF_ADMIN_ALERT_BUFFER_SIZE + sizeof(ADMIN_OTHER_INFO)];
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ADMIN_OTHER_INFO UNALIGNED* VariableInfo = (PADMIN_OTHER_INFO)AlertBuffer;
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DWORD DataSize;
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DWORD i;
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LPWSTR pReplaceString;
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HANDLE dllHandle;
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ALERT_FNC_PTR AlertFunction;
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// Dynamically link to netapi.dll. If it's not there just return. Return TRUE so we won't try to send this alert again.
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dllHandle = LoadLibraryA("NetApi32.Dll");
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if (dllHandle == INVALID_HANDLE_VALUE) {
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ElfDbgPrint(("[ELF] Failed to load DLL NetApi32.Dll: %ld\n", GetLastError()));
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return(TRUE);
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}
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// Get the address of the service's main entry point. This entry point has a well-known name.
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AlertFunction = (ALERT_FNC_PTR)GetProcAddress(dllHandle, "NetAlertRaiseEx");
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if (AlertFunction == NULL) {
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ElfDbgPrint(("[ELF] Can't find entry NetAlertRaiseEx in NetApi32.Dll: %ld\n", GetLastError()));
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return(TRUE);
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}
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VariableInfo->alrtad_errcode = MessageID;
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VariableInfo->alrtad_numstrings = NumStrings;
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pReplaceString = (LPWSTR)(AlertBuffer + sizeof(ADMIN_OTHER_INFO));
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// Copy over the replacement strings
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for (i = 0; i < NumStrings; i++) {
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RtlMoveMemory(pReplaceString, pStrings[i].Buffer, pStrings[i].MaximumLength);
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pReplaceString = (LPWSTR)((PBYTE)pReplaceString + pStrings[i].MaximumLength);
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}
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DataSize = (DWORD)((PBYTE)pReplaceString - (PBYTE)AlertBuffer);
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NetStatus = (*AlertFunction)(ALERT_ADMIN_EVENT, AlertBuffer, DataSize, EVENTLOG_SVC_NAMEW);
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if (NetStatus != NERR_Success) {
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ElfDbgPrint(("[ELF] NetAlertRaiseEx failed with %d\n", NetStatus));
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ElfDbgPrint(("[ELF] Attempted to raise alert %d\n", MessageID));
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return(FALSE);// Probably just not started yet, try again later
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}
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return(TRUE);
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}
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