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https://github.com/reactos/reactos.git
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9261110760
All the per-API message structure unpacking and console validation done with ConSrvGetConsole() is now automatically generated using the macros, so that the actual implementation of each API can be done independently of how the console object is obtained. This could also allow reusing these API implementations with a different mechanism for obtaining the console without changing anything in them.
656 lines
20 KiB
C
656 lines
20 KiB
C
/*
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* LICENSE: GPL - See COPYING in the top level directory
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* PROJECT: ReactOS Console Server DLL
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* FILE: win32ss/user/winsrv/consrv/history.c
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* PURPOSE: Console line input functions
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* PROGRAMMERS: Jeffrey Morlan
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*/
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/* INCLUDES *******************************************************************/
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#include "consrv.h"
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#include "popup.h"
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#define NDEBUG
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#include <debug.h>
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typedef struct _HISTORY_BUFFER
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{
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LIST_ENTRY ListEntry;
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ULONG Position;
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ULONG MaxEntries;
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ULONG NumEntries;
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UNICODE_STRING ExeName;
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PUNICODE_STRING Entries;
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} HISTORY_BUFFER, *PHISTORY_BUFFER;
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BOOLEAN
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ConvertInputAnsiToUnicode(PCONSRV_CONSOLE Console,
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PVOID Source,
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USHORT SourceLength,
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// BOOLEAN IsUnicode,
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PWCHAR* Target,
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PUSHORT TargetLength);
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BOOLEAN
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ConvertInputUnicodeToAnsi(PCONSRV_CONSOLE Console,
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PVOID Source,
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USHORT SourceLength,
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// BOOLEAN IsAnsi,
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PCHAR/* * */ Target,
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/*P*/USHORT TargetLength);
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/* PRIVATE FUNCTIONS **********************************************************/
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static PHISTORY_BUFFER
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HistoryCurrentBuffer(
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IN PCONSRV_CONSOLE Console,
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IN PUNICODE_STRING ExeName)
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{
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PLIST_ENTRY Entry;
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PHISTORY_BUFFER Hist;
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for (Entry = Console->HistoryBuffers.Flink;
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Entry != &Console->HistoryBuffers;
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Entry = Entry->Flink)
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{
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Hist = CONTAINING_RECORD(Entry, HISTORY_BUFFER, ListEntry);
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if (RtlEqualUnicodeString(ExeName, &Hist->ExeName, FALSE))
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return Hist;
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}
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/* Could not find the buffer, create a new one */
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if (Console->NumberOfHistoryBuffers < Console->MaxNumberOfHistoryBuffers)
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{
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Hist = ConsoleAllocHeap(0, sizeof(HISTORY_BUFFER) + ExeName->Length);
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if (!Hist) return NULL;
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Hist->MaxEntries = Console->HistoryBufferSize;
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Hist->NumEntries = 0;
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Hist->Entries = ConsoleAllocHeap(0, Hist->MaxEntries * sizeof(UNICODE_STRING));
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if (!Hist->Entries)
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{
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ConsoleFreeHeap(Hist);
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return NULL;
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}
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Hist->ExeName.Length = Hist->ExeName.MaximumLength = ExeName->Length;
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Hist->ExeName.Buffer = (PWCHAR)(Hist + 1);
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RtlCopyMemory(Hist->ExeName.Buffer, ExeName->Buffer, ExeName->Length);
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InsertHeadList(&Console->HistoryBuffers, &Hist->ListEntry);
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Console->NumberOfHistoryBuffers++;
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return Hist;
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}
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else
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{
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// FIXME: TODO !!!!!!!
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// Reuse an older history buffer, if possible with the same Exe name,
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// otherwise take the oldest one and reset its contents.
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// And move the history buffer back to the head of the list.
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UNIMPLEMENTED;
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return NULL;
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}
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}
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static PHISTORY_BUFFER
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HistoryFindBuffer(PCONSRV_CONSOLE Console,
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PVOID ExeName,
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USHORT ExeLength,
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BOOLEAN UnicodeExe)
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{
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UNICODE_STRING ExeNameU;
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PLIST_ENTRY Entry;
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PHISTORY_BUFFER Hist = NULL;
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if (ExeName == NULL) return NULL;
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if (UnicodeExe)
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{
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ExeNameU.Buffer = ExeName;
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/* Length is in bytes */
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ExeNameU.MaximumLength = ExeLength;
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}
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else
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{
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if (!ConvertInputAnsiToUnicode(Console,
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ExeName, ExeLength,
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&ExeNameU.Buffer, &ExeNameU.MaximumLength))
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{
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return NULL;
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}
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}
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ExeNameU.Length = ExeNameU.MaximumLength;
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for (Entry = Console->HistoryBuffers.Flink;
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Entry != &Console->HistoryBuffers;
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Entry = Entry->Flink)
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{
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Hist = CONTAINING_RECORD(Entry, HISTORY_BUFFER, ListEntry);
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/* For the history APIs, the caller is allowed to give only part of the name */
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if (RtlPrefixUnicodeString(&ExeNameU, &Hist->ExeName, TRUE))
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{
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if (!UnicodeExe) ConsoleFreeHeap(ExeNameU.Buffer);
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return Hist;
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}
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}
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if (!UnicodeExe) ConsoleFreeHeap(ExeNameU.Buffer);
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return NULL;
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}
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static VOID
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HistoryDeleteBuffer(PHISTORY_BUFFER Hist)
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{
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if (!Hist) return;
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while (Hist->NumEntries != 0)
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RtlFreeUnicodeString(&Hist->Entries[--Hist->NumEntries]);
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ConsoleFreeHeap(Hist->Entries);
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RemoveEntryList(&Hist->ListEntry);
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ConsoleFreeHeap(Hist);
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}
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static NTSTATUS
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HistoryResizeBuffer(
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IN PHISTORY_BUFFER Hist,
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IN ULONG NumCommands)
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{
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PUNICODE_STRING OldEntryList = Hist->Entries;
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PUNICODE_STRING NewEntryList;
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NewEntryList = ConsoleAllocHeap(0, NumCommands * sizeof(UNICODE_STRING));
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if (!NewEntryList)
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return STATUS_NO_MEMORY;
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/* If necessary, shrink by removing oldest entries */
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for (; Hist->NumEntries > NumCommands; Hist->NumEntries--)
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{
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RtlFreeUnicodeString(Hist->Entries++);
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Hist->Position += (Hist->Position == 0);
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}
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Hist->MaxEntries = NumCommands;
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RtlCopyMemory(NewEntryList, Hist->Entries,
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Hist->NumEntries * sizeof(UNICODE_STRING));
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Hist->Entries = NewEntryList;
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ConsoleFreeHeap(OldEntryList);
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return STATUS_SUCCESS;
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}
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VOID
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HistoryAddEntry(PCONSRV_CONSOLE Console,
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PUNICODE_STRING ExeName,
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PUNICODE_STRING Entry)
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{
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// UNICODE_STRING NewEntry;
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PHISTORY_BUFFER Hist = HistoryCurrentBuffer(Console, ExeName);
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if (!Hist) return;
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// NewEntry.Length = NewEntry.MaximumLength = Console->LineSize * sizeof(WCHAR);
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// NewEntry.Buffer = Console->LineBuffer;
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/* Don't add blank or duplicate entries */
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if (Entry->Length == 0 || Hist->MaxEntries == 0 ||
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(Hist->NumEntries > 0 &&
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RtlEqualUnicodeString(&Hist->Entries[Hist->NumEntries - 1], Entry, FALSE)))
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{
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return;
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}
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if (Console->HistoryNoDup)
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{
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INT i;
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/* Check if this line has been entered before */
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for (i = Hist->NumEntries - 1; i >= 0; i--)
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{
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if (RtlEqualUnicodeString(&Hist->Entries[i], Entry, FALSE))
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{
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UNICODE_STRING NewEntry;
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/* Just rotate the list to bring this entry to the end */
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NewEntry = Hist->Entries[i];
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RtlMoveMemory(&Hist->Entries[i], &Hist->Entries[i + 1],
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(Hist->NumEntries - (i + 1)) * sizeof(UNICODE_STRING));
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Hist->Entries[Hist->NumEntries - 1] = NewEntry;
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Hist->Position = Hist->NumEntries - 1;
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return;
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}
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}
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}
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if (Hist->NumEntries == Hist->MaxEntries)
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{
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/* List is full, remove oldest entry */
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RtlFreeUnicodeString(&Hist->Entries[0]);
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RtlMoveMemory(&Hist->Entries[0], &Hist->Entries[1],
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--Hist->NumEntries * sizeof(UNICODE_STRING));
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}
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if (NT_SUCCESS(RtlDuplicateUnicodeString(0, Entry, &Hist->Entries[Hist->NumEntries])))
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Hist->NumEntries++;
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Hist->Position = Hist->NumEntries - 1;
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}
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VOID
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HistoryGetCurrentEntry(PCONSRV_CONSOLE Console,
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PUNICODE_STRING ExeName,
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PUNICODE_STRING Entry)
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{
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PHISTORY_BUFFER Hist = HistoryCurrentBuffer(Console, ExeName);
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if (!Hist || Hist->NumEntries == 0)
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Entry->Length = 0;
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else
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*Entry = Hist->Entries[Hist->Position];
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}
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BOOL
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HistoryRecallHistory(PCONSRV_CONSOLE Console,
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PUNICODE_STRING ExeName,
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INT Offset,
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PUNICODE_STRING Entry)
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{
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PHISTORY_BUFFER Hist = HistoryCurrentBuffer(Console, ExeName);
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ULONG Position = 0;
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if (!Hist || Hist->NumEntries == 0) return FALSE;
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Position = Hist->Position + Offset;
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Position = min(max(Position, 0), Hist->NumEntries - 1);
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Hist->Position = Position;
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*Entry = Hist->Entries[Hist->Position];
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return TRUE;
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}
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BOOL
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HistoryFindEntryByPrefix(PCONSRV_CONSOLE Console,
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PUNICODE_STRING ExeName,
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PUNICODE_STRING Prefix,
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PUNICODE_STRING Entry)
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{
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INT HistPos;
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/* Search for history entries starting with input. */
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PHISTORY_BUFFER Hist = HistoryCurrentBuffer(Console, ExeName);
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if (!Hist || Hist->NumEntries == 0) return FALSE;
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/*
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* Like Up/F5, on first time start from current (usually last) entry,
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* but on subsequent times start at previous entry.
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*/
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if (Console->LineUpPressed)
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Hist->Position = (Hist->Position ? Hist->Position : Hist->NumEntries) - 1;
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Console->LineUpPressed = TRUE;
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// Entry.Length = Console->LinePos * sizeof(WCHAR); // == Pos * sizeof(WCHAR)
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// Entry.Buffer = Console->LineBuffer;
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/*
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* Keep going backwards, even wrapping around to the end,
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* until we get back to starting point.
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*/
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HistPos = Hist->Position;
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do
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{
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if (RtlPrefixUnicodeString(Prefix, &Hist->Entries[HistPos], FALSE))
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{
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Hist->Position = HistPos;
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*Entry = Hist->Entries[HistPos];
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return TRUE;
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}
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if (--HistPos < 0) HistPos += Hist->NumEntries;
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} while (HistPos != Hist->Position);
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return FALSE;
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}
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PPOPUP_WINDOW
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HistoryDisplayCurrentHistory(PCONSRV_CONSOLE Console,
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PUNICODE_STRING ExeName)
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{
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PCONSOLE_SCREEN_BUFFER ActiveBuffer;
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PPOPUP_WINDOW Popup;
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SHORT xLeft, yTop;
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SHORT Width, Height;
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PHISTORY_BUFFER Hist = HistoryCurrentBuffer(Console, ExeName);
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if (!Hist) return NULL;
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if (Hist->NumEntries == 0) return NULL;
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if (GetType(Console->ActiveBuffer) != TEXTMODE_BUFFER) return NULL;
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ActiveBuffer = Console->ActiveBuffer;
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Width = 40;
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Height = 10;
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/* Center the popup window on the screen */
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xLeft = ActiveBuffer->ViewOrigin.X + (ActiveBuffer->ViewSize.X - Width ) / 2;
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yTop = ActiveBuffer->ViewOrigin.Y + (ActiveBuffer->ViewSize.Y - Height) / 2;
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/* Create the popup */
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Popup = CreatePopupWindow(Console, ActiveBuffer,
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xLeft, yTop, Width, Height);
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if (Popup == NULL) return NULL;
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Popup->PopupInputRoutine = NULL;
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return Popup;
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}
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VOID
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HistoryDeleteCurrentBuffer(PCONSRV_CONSOLE Console,
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PUNICODE_STRING ExeName)
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{
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HistoryDeleteBuffer(HistoryCurrentBuffer(Console, ExeName));
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}
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VOID
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HistoryDeleteBuffers(PCONSRV_CONSOLE Console)
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{
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PLIST_ENTRY CurrentEntry;
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PHISTORY_BUFFER HistoryBuffer;
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while (!IsListEmpty(&Console->HistoryBuffers))
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{
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CurrentEntry = RemoveHeadList(&Console->HistoryBuffers);
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HistoryBuffer = CONTAINING_RECORD(CurrentEntry, HISTORY_BUFFER, ListEntry);
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HistoryDeleteBuffer(HistoryBuffer);
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}
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}
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VOID
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HistoryReshapeAllBuffers(
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IN PCONSRV_CONSOLE Console,
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IN ULONG HistoryBufferSize,
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IN ULONG MaxNumberOfHistoryBuffers,
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IN BOOLEAN HistoryNoDup)
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{
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PLIST_ENTRY Entry;
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PHISTORY_BUFFER Hist;
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NTSTATUS Status;
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// ASSERT(Console->NumberOfHistoryBuffers <= Console->MaxNumberOfHistoryBuffers);
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if (MaxNumberOfHistoryBuffers < Console->NumberOfHistoryBuffers)
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{
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/*
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* Trim the history buffers list and reduce it up to MaxNumberOfHistoryBuffers.
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* We loop the history buffers list backwards so as to trim the oldest
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* buffers first.
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*/
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while (!IsListEmpty(&Console->HistoryBuffers) &&
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(Console->NumberOfHistoryBuffers > MaxNumberOfHistoryBuffers))
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{
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Entry = RemoveTailList(&Console->HistoryBuffers);
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Hist = CONTAINING_RECORD(Entry, HISTORY_BUFFER, ListEntry);
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HistoryDeleteBuffer(Hist);
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Console->NumberOfHistoryBuffers--;
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}
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ASSERT(Console->NumberOfHistoryBuffers == MaxNumberOfHistoryBuffers);
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ASSERT(((Console->NumberOfHistoryBuffers == 0) && IsListEmpty(&Console->HistoryBuffers)) ||
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((Console->NumberOfHistoryBuffers > 0) && !IsListEmpty(&Console->HistoryBuffers)));
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}
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Console->MaxNumberOfHistoryBuffers = MaxNumberOfHistoryBuffers;
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/* Resize each history buffer */
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for (Entry = Console->HistoryBuffers.Flink;
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Entry != &Console->HistoryBuffers;
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Entry = Entry->Flink)
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{
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Hist = CONTAINING_RECORD(Entry, HISTORY_BUFFER, ListEntry);
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Status = HistoryResizeBuffer(Hist, HistoryBufferSize);
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if (!NT_SUCCESS(Status))
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{
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DPRINT1("HistoryResizeBuffer(0x%p, %lu) failed, Status 0x%08lx\n",
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Hist, HistoryBufferSize, Status);
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}
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}
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Console->HistoryBufferSize = HistoryBufferSize;
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/* No duplicates */
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Console->HistoryNoDup = !!HistoryNoDup;
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}
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/* PUBLIC SERVER APIS *********************************************************/
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/* API_NUMBER: ConsolepGetCommandHistory */
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CON_API(SrvGetConsoleCommandHistory,
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CONSOLE_GETCOMMANDHISTORY, GetCommandHistoryRequest)
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{
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NTSTATUS Status = STATUS_SUCCESS;
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ULONG BytesWritten = 0;
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PHISTORY_BUFFER Hist;
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if ( !CsrValidateMessageBuffer(ApiMessage,
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(PVOID*)&GetCommandHistoryRequest->History,
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GetCommandHistoryRequest->HistoryLength,
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sizeof(BYTE)) ||
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!CsrValidateMessageBuffer(ApiMessage,
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(PVOID*)&GetCommandHistoryRequest->ExeName,
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GetCommandHistoryRequest->ExeLength,
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sizeof(BYTE)) )
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{
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return STATUS_INVALID_PARAMETER;
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}
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Hist = HistoryFindBuffer(Console,
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GetCommandHistoryRequest->ExeName,
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GetCommandHistoryRequest->ExeLength,
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GetCommandHistoryRequest->Unicode2);
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if (Hist)
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{
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ULONG i;
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LPSTR TargetBufferA;
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LPWSTR TargetBufferW;
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ULONG BufferSize = GetCommandHistoryRequest->HistoryLength;
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ULONG Offset = 0;
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ULONG SourceLength;
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if (GetCommandHistoryRequest->Unicode)
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{
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TargetBufferW = GetCommandHistoryRequest->History;
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BufferSize /= sizeof(WCHAR);
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}
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else
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{
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TargetBufferA = GetCommandHistoryRequest->History;
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}
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for (i = 0; i < Hist->NumEntries; i++)
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{
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SourceLength = Hist->Entries[i].Length / sizeof(WCHAR);
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if (Offset + SourceLength + 1 > BufferSize)
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{
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Status = STATUS_BUFFER_OVERFLOW;
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break;
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}
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if (GetCommandHistoryRequest->Unicode)
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{
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RtlCopyMemory(&TargetBufferW[Offset], Hist->Entries[i].Buffer, SourceLength * sizeof(WCHAR));
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Offset += SourceLength;
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TargetBufferW[Offset++] = L'\0';
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}
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else
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{
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ConvertInputUnicodeToAnsi(Console,
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Hist->Entries[i].Buffer, SourceLength * sizeof(WCHAR),
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&TargetBufferA[Offset], SourceLength);
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Offset += SourceLength;
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TargetBufferA[Offset++] = '\0';
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}
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}
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if (GetCommandHistoryRequest->Unicode)
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BytesWritten = Offset * sizeof(WCHAR);
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else
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BytesWritten = Offset;
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}
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// GetCommandHistoryRequest->HistoryLength = TargetBuffer - (PBYTE)GetCommandHistoryRequest->History;
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GetCommandHistoryRequest->HistoryLength = BytesWritten;
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return Status;
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}
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/* API_NUMBER: ConsolepGetCommandHistoryLength */
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CON_API(SrvGetConsoleCommandHistoryLength,
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CONSOLE_GETCOMMANDHISTORYLENGTH, GetCommandHistoryLengthRequest)
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{
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PHISTORY_BUFFER Hist;
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ULONG Length = 0;
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if (!CsrValidateMessageBuffer(ApiMessage,
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(PVOID*)&GetCommandHistoryLengthRequest->ExeName,
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GetCommandHistoryLengthRequest->ExeLength,
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sizeof(BYTE)))
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{
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return STATUS_INVALID_PARAMETER;
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}
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Hist = HistoryFindBuffer(Console,
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GetCommandHistoryLengthRequest->ExeName,
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GetCommandHistoryLengthRequest->ExeLength,
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GetCommandHistoryLengthRequest->Unicode2);
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if (Hist)
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{
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ULONG i;
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for (i = 0; i < Hist->NumEntries; i++)
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Length += Hist->Entries[i].Length + sizeof(WCHAR); // Each entry is returned NULL-terminated
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}
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/*
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* Quick and dirty way of getting the number of bytes of the
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* corresponding ANSI string from the one in UNICODE.
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*/
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if (!GetCommandHistoryLengthRequest->Unicode)
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Length /= sizeof(WCHAR);
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GetCommandHistoryLengthRequest->HistoryLength = Length;
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return STATUS_SUCCESS;
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}
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/* API_NUMBER: ConsolepExpungeCommandHistory */
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CON_API(SrvExpungeConsoleCommandHistory,
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CONSOLE_EXPUNGECOMMANDHISTORY, ExpungeCommandHistoryRequest)
|
|
{
|
|
PHISTORY_BUFFER Hist;
|
|
|
|
if (!CsrValidateMessageBuffer(ApiMessage,
|
|
(PVOID*)&ExpungeCommandHistoryRequest->ExeName,
|
|
ExpungeCommandHistoryRequest->ExeLength,
|
|
sizeof(BYTE)))
|
|
{
|
|
return STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
Hist = HistoryFindBuffer(Console,
|
|
ExpungeCommandHistoryRequest->ExeName,
|
|
ExpungeCommandHistoryRequest->ExeLength,
|
|
ExpungeCommandHistoryRequest->Unicode2);
|
|
HistoryDeleteBuffer(Hist);
|
|
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
/* API_NUMBER: ConsolepSetNumberOfCommands */
|
|
CON_API(SrvSetConsoleNumberOfCommands,
|
|
CONSOLE_SETHISTORYNUMBERCOMMANDS, SetHistoryNumberCommandsRequest)
|
|
{
|
|
NTSTATUS Status = STATUS_SUCCESS;
|
|
PHISTORY_BUFFER Hist;
|
|
|
|
if (!CsrValidateMessageBuffer(ApiMessage,
|
|
(PVOID*)&SetHistoryNumberCommandsRequest->ExeName,
|
|
SetHistoryNumberCommandsRequest->ExeLength,
|
|
sizeof(BYTE)))
|
|
{
|
|
return STATUS_INVALID_PARAMETER;
|
|
}
|
|
|
|
Hist = HistoryFindBuffer(Console,
|
|
SetHistoryNumberCommandsRequest->ExeName,
|
|
SetHistoryNumberCommandsRequest->ExeLength,
|
|
SetHistoryNumberCommandsRequest->Unicode2);
|
|
if (Hist)
|
|
{
|
|
Status = HistoryResizeBuffer(Hist, SetHistoryNumberCommandsRequest->NumCommands);
|
|
}
|
|
|
|
return Status;
|
|
}
|
|
|
|
/* API_NUMBER: ConsolepGetHistory */
|
|
CON_API_NOCONSOLE(SrvGetConsoleHistory,
|
|
CONSOLE_GETSETHISTORYINFO, HistoryInfoRequest)
|
|
{
|
|
#if (_WIN32_WINNT >= _WIN32_WINNT_VISTA)
|
|
NTSTATUS Status;
|
|
PCONSRV_CONSOLE Console;
|
|
|
|
Status = ConSrvGetConsole(ProcessData,
|
|
&Console, TRUE);
|
|
if (!NT_SUCCESS(Status))
|
|
return Status;
|
|
|
|
HistoryInfoRequest->HistoryBufferSize = Console->HistoryBufferSize;
|
|
HistoryInfoRequest->NumberOfHistoryBuffers = Console->MaxNumberOfHistoryBuffers;
|
|
HistoryInfoRequest->dwFlags = (Console->HistoryNoDup ? HISTORY_NO_DUP_FLAG : 0);
|
|
|
|
ConSrvReleaseConsole(Console, TRUE);
|
|
return Status;
|
|
#else
|
|
DPRINT1("%s not yet implemented\n", __FUNCTION__);
|
|
return STATUS_NOT_IMPLEMENTED;
|
|
#endif
|
|
}
|
|
|
|
/* API_NUMBER: ConsolepSetHistory */
|
|
CON_API_NOCONSOLE(SrvSetConsoleHistory,
|
|
CONSOLE_GETSETHISTORYINFO, HistoryInfoRequest)
|
|
{
|
|
#if (_WIN32_WINNT >= _WIN32_WINNT_VISTA)
|
|
NTSTATUS Status;
|
|
PCONSRV_CONSOLE Console;
|
|
|
|
Status = ConSrvGetConsole(ProcessData,
|
|
&Console, TRUE);
|
|
if (!NT_SUCCESS(Status))
|
|
return Status;
|
|
|
|
HistoryReshapeAllBuffers(Console,
|
|
HistoryInfoRequest->HistoryBufferSize,
|
|
HistoryInfoRequest->NumberOfHistoryBuffers,
|
|
!!(HistoryInfoRequest->dwFlags & HISTORY_NO_DUP_FLAG));
|
|
|
|
ConSrvReleaseConsole(Console, TRUE);
|
|
return STATUS_SUCCESS;
|
|
#else
|
|
DPRINT1("%s not yet implemented\n", __FUNCTION__);
|
|
return STATUS_NOT_IMPLEMENTED;
|
|
#endif
|
|
}
|
|
|
|
/* API_NUMBER: ConsolepSetCommandHistoryMode */
|
|
CON_API(SrvSetConsoleCommandHistoryMode,
|
|
CONSOLE_SETHISTORYMODE, SetHistoryModeRequest)
|
|
{
|
|
DPRINT("SrvSetConsoleCommandHistoryMode(Mode = %d) is not yet implemented\n",
|
|
SetHistoryModeRequest->Mode);
|
|
|
|
Console->InsertMode = !!(SetHistoryModeRequest->Mode & CONSOLE_OVERSTRIKE);
|
|
return STATUS_SUCCESS;
|
|
}
|
|
|
|
/* EOF */
|