[ros-diffs] [jmorlan] 47581: add missing file

Author: jmorlan
Date: Sat Jun  5 05:12:51 2010
New Revision: 47581

URL: http://svn.reactos.org/svn/reactos?rev=47581&view=rev
Log:
add missing file

Added:
    trunk/reactos/subsystems/win32/csrss/win32csr/history.c   (with props)

Added: trunk/reactos/subsystems/win32/csrss/win32csr/history.c
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/subsystems/win32/csrss/win…
==============================================================================
--- trunk/reactos/subsystems/win32/csrss/win32csr/history.c (added)
+++ trunk/reactos/subsystems/win32/csrss/win32csr/history.c [iso-8859-1] Sat Jun  5
05:12:51 2010
@@ -1,0 +1,304 @@
+/*
+ * PROJECT:         ReactOS CSRSS
+ * LICENSE:         GPL - See COPYING in the top level directory
+ * FILE:            subsystems/win32/csrss/win32csr/history.c
+ * PURPOSE:         Console input history functions
+ * PROGRAMMERS:     Jeffrey Morlan
+ */
+
+/* INCLUDES ******************************************************************/
+
+#define NDEBUG
+#include "w32csr.h"
+#include <debug.h>
+
+typedef struct tagHISTORY_BUFFER
+{
+    LIST_ENTRY ListEntry;
+    WORD MaxEntries;
+    WORD NumEntries;
+    PUNICODE_STRING Entries;
+    UNICODE_STRING ExeName;
+} HISTORY_BUFFER, *PHISTORY_BUFFER;
+
+/* FUNCTIONS *****************************************************************/
+
+static PHISTORY_BUFFER
+HistoryGetBuffer(PCSRSS_CONSOLE Console)
+{
+    /* TODO: use actual EXE name sent from process that called ReadConsole */
+    UNICODE_STRING ExeName = { 14, 14, L"cmd.exe" };
+    PLIST_ENTRY Entry = Console->HistoryBuffers.Flink;
+    PHISTORY_BUFFER Hist;
+
+    for (; Entry != &Console->HistoryBuffers; Entry = Entry->Flink)
+    {
+        Hist = CONTAINING_RECORD(Entry, HISTORY_BUFFER, ListEntry);
+        if (RtlEqualUnicodeString(&ExeName, &Hist->ExeName, FALSE))
+            return Hist;
+    }
+
+    /* Couldn't find the buffer, create a new one */
+    Hist = HeapAlloc(Win32CsrApiHeap, 0, sizeof(HISTORY_BUFFER) + ExeName.Length);
+    if (!Hist)
+        return NULL;
+    Hist->MaxEntries = Console->HistoryBufferSize;
+    Hist->NumEntries = 0;
+    Hist->Entries = HeapAlloc(Win32CsrApiHeap, 0, Hist->MaxEntries *
sizeof(UNICODE_STRING));
+    if (!Hist->Entries)
+    {
+        HeapFree(Win32CsrApiHeap, 0, Hist);
+        return NULL;
+    }
+    Hist->ExeName.Length = Hist->ExeName.MaximumLength = ExeName.Length;
+    Hist->ExeName.Buffer = (PWCHAR)(Hist + 1);
+    memcpy(Hist->ExeName.Buffer, ExeName.Buffer, ExeName.Length);
+    InsertHeadList(&Console->HistoryBuffers, &Hist->ListEntry);
+    return Hist;
+}
+
+VOID FASTCALL
+HistoryAddEntry(PCSRSS_CONSOLE Console)
+{
+    UNICODE_STRING NewEntry;
+    PHISTORY_BUFFER Hist;
+    INT i;
+
+    NewEntry.Length = NewEntry.MaximumLength = Console->LineSize * sizeof(WCHAR);
+    NewEntry.Buffer = Console->LineBuffer;
+
+    if (!(Hist = HistoryGetBuffer(Console)))
+        return;
+
+    /* Don't add blank or duplicate entries */
+    if (NewEntry.Length == 0 || Hist->MaxEntries == 0 ||
+        (Hist->NumEntries > 0 &&
+         RtlEqualUnicodeString(&Hist->Entries[Hist->NumEntries - 1],
&NewEntry, FALSE)))
+    {
+        return;
+    }
+
+    if (Console->HistoryNoDup)
+    {
+        /* Check if this line has been entered before */
+        for (i = Hist->NumEntries - 1; i >= 0; i--)
+        {
+            if (RtlEqualUnicodeString(&Hist->Entries[i], &NewEntry, FALSE))
+            {
+                /* Just rotate the list to bring this entry to the end */
+                NewEntry = Hist->Entries[i];
+                memmove(&Hist->Entries[i], &Hist->Entries[i + 1],
+                        (Hist->NumEntries - (i + 1)) * sizeof(UNICODE_STRING));
+                Hist->Entries[Hist->NumEntries - 1] = NewEntry;
+                return;
+            }
+        }
+    }
+
+    if (Hist->NumEntries == Hist->MaxEntries)
+    {
+        /* List is full, remove oldest entry */
+        RtlFreeUnicodeString(&Hist->Entries[0]);
+        memmove(&Hist->Entries[0], &Hist->Entries[1],
+                --Hist->NumEntries * sizeof(UNICODE_STRING));
+    }
+
+    if (NT_SUCCESS(RtlDuplicateUnicodeString(0, &NewEntry,
&Hist->Entries[Hist->NumEntries])))
+        Hist->NumEntries++;
+}
+
+static PHISTORY_BUFFER
+HistoryFindBuffer(PCSRSS_CONSOLE Console, PUNICODE_STRING ExeName)
+{
+    PLIST_ENTRY Entry = Console->HistoryBuffers.Flink;
+    while (Entry != &Console->HistoryBuffers)
+    {
+        /* For the history APIs, the caller is allowed to give only part of the name */
+        PHISTORY_BUFFER Hist = CONTAINING_RECORD(Entry, HISTORY_BUFFER, ListEntry);
+        if (RtlPrefixUnicodeString(ExeName, &Hist->ExeName, TRUE))
+            return Hist;
+        Entry = Entry->Flink;
+    }
+    return NULL;
+}
+
+VOID FASTCALL
+HistoryDeleteBuffer(PHISTORY_BUFFER Hist)
+{
+    while (Hist->NumEntries != 0)
+        RtlFreeUnicodeString(&Hist->Entries[--Hist->NumEntries]);
+    HeapFree(Win32CsrApiHeap, 0, Hist->Entries);
+    RemoveEntryList(&Hist->ListEntry);
+    HeapFree(Win32CsrApiHeap, 0, Hist);
+}
+
+CSR_API(CsrGetCommandHistoryLength)
+{
+    PCSRSS_CONSOLE Console;
+    NTSTATUS Status;
+    PHISTORY_BUFFER Hist;
+    ULONG Length = 0;
+    INT i;
+
+    if (!Win32CsrValidateBuffer(ProcessData,
+                                Request->Data.GetCommandHistoryLength.ExeName.Buffer,
+                                Request->Data.GetCommandHistoryLength.ExeName.Length,
1))
+    {
+        return STATUS_ACCESS_VIOLATION;
+    }
+
+    Status = ConioConsoleFromProcessData(ProcessData, &Console);
+    if (NT_SUCCESS(Status))
+    {
+        Hist = HistoryFindBuffer(Console,
&Request->Data.GetCommandHistory.ExeName);
+        if (Hist)
+        {
+            for (i = 0; i < Hist->NumEntries; i++)
+                Length += Hist->Entries[i].Length + sizeof(WCHAR);
+        }
+        Request->Data.GetCommandHistoryLength.Length = Length;
+        ConioUnlockConsole(Console);
+    }
+    return Status;
+}
+
+CSR_API(CsrGetCommandHistory)
+{
+    PCSRSS_CONSOLE Console;
+    NTSTATUS Status;
+    PHISTORY_BUFFER Hist;
+    PBYTE Buffer = (PBYTE)Request->Data.GetCommandHistory.History;
+    ULONG BufferSize = Request->Data.GetCommandHistory.Length;
+    INT i;
+
+    if (!Win32CsrValidateBuffer(ProcessData, Buffer, BufferSize, 1) ||
+        !Win32CsrValidateBuffer(ProcessData,
+                                Request->Data.GetCommandHistory.ExeName.Buffer,
+                                Request->Data.GetCommandHistory.ExeName.Length, 1))
+    {
+        return STATUS_ACCESS_VIOLATION;
+    }
+
+    Status = ConioConsoleFromProcessData(ProcessData, &Console);
+    if (NT_SUCCESS(Status))
+    {
+        Hist = HistoryFindBuffer(Console,
&Request->Data.GetCommandHistory.ExeName);
+        if (Hist)
+        {
+            for (i = 0; i < Hist->NumEntries; i++)
+            {
+                if (BufferSize < (Hist->Entries[i].Length + sizeof(WCHAR)))
+                {
+                    Status = STATUS_BUFFER_OVERFLOW;
+                    break;
+                }
+                memcpy(Buffer, Hist->Entries[i].Buffer, Hist->Entries[i].Length);
+                Buffer += Hist->Entries[i].Length;
+                *(PWCHAR)Buffer = L'\0';
+                Buffer += sizeof(WCHAR);
+            }
+        }
+        Request->Data.GetCommandHistory.Length = Buffer -
(PBYTE)Request->Data.GetCommandHistory.History;
+        ConioUnlockConsole(Console);
+    }
+    return Status;
+}
+
+CSR_API(CsrExpungeCommandHistory)
+{
+    PCSRSS_CONSOLE Console;
+    PHISTORY_BUFFER Hist;
+    NTSTATUS Status;
+
+    if (!Win32CsrValidateBuffer(ProcessData,
+                                Request->Data.ExpungeCommandHistory.ExeName.Buffer,
+                                Request->Data.ExpungeCommandHistory.ExeName.Length,
1))
+    {
+        return STATUS_ACCESS_VIOLATION;
+    }
+
+    Status = ConioConsoleFromProcessData(ProcessData, &Console);
+    if (NT_SUCCESS(Status))
+    {
+        Hist = HistoryFindBuffer(Console,
&Request->Data.ExpungeCommandHistory.ExeName);
+        if (Hist)
+            HistoryDeleteBuffer(Hist);
+        ConioUnlockConsole(Console);
+    }
+    return Status;
+}
+
+CSR_API(CsrSetHistoryNumberCommands)
+{
+    PCSRSS_CONSOLE Console;
+    PHISTORY_BUFFER Hist;
+    NTSTATUS Status;
+    WORD MaxEntries = Request->Data.SetHistoryNumberCommands.NumCommands;
+    PUNICODE_STRING OldEntryList, NewEntryList;
+
+    if (!Win32CsrValidateBuffer(ProcessData,
+                               
Request->Data.SetHistoryNumberCommands.ExeName.Buffer,
+                                Request->Data.SetHistoryNumberCommands.ExeName.Length,
1))
+    {
+        return STATUS_ACCESS_VIOLATION;
+    }
+
+    Status = ConioConsoleFromProcessData(ProcessData, &Console);
+    if (NT_SUCCESS(Status))
+    {
+        Hist = HistoryFindBuffer(Console,
&Request->Data.SetHistoryNumberCommands.ExeName);
+        if (Hist)
+        {
+            OldEntryList = Hist->Entries;
+            NewEntryList = HeapAlloc(Win32CsrApiHeap, 0,
+                                     MaxEntries * sizeof(UNICODE_STRING));
+            if (!NewEntryList)
+            {
+                Status = STATUS_NO_MEMORY;
+            }
+            else
+            {
+                /* If necessary, shrink by removing oldest entries */
+                for (; Hist->NumEntries > MaxEntries; Hist->NumEntries--)
+                    RtlFreeUnicodeString(Hist->Entries++);
+
+                Hist->MaxEntries = MaxEntries;
+                Hist->Entries = memcpy(NewEntryList, Hist->Entries,
+                                       Hist->NumEntries * sizeof(UNICODE_STRING));
+                HeapFree(Win32CsrApiHeap, 0, OldEntryList);
+            }
+        }
+        ConioUnlockConsole(Console);
+    }
+    return Status;
+}
+
+CSR_API(CsrGetHistoryInfo)
+{
+    PCSRSS_CONSOLE Console;
+    NTSTATUS Status = ConioConsoleFromProcessData(ProcessData, &Console);
+    if (NT_SUCCESS(Status))
+    {
+        Request->Data.SetHistoryInfo.HistoryBufferSize      =
Console->HistoryBufferSize;
+        Request->Data.SetHistoryInfo.NumberOfHistoryBuffers =
Console->NumberOfHistoryBuffers;
+        Request->Data.SetHistoryInfo.dwFlags                =
Console->HistoryNoDup;
+        ConioUnlockConsole(Console);
+    }
+    return Status;
+}
+
+CSR_API(CsrSetHistoryInfo)
+{
+    PCSRSS_CONSOLE Console;
+    NTSTATUS Status = ConioConsoleFromProcessData(ProcessData, &Console);
+    if (NT_SUCCESS(Status))
+    {
+        Console->HistoryBufferSize      =
(WORD)Request->Data.SetHistoryInfo.HistoryBufferSize;
+        Console->NumberOfHistoryBuffers =
(WORD)Request->Data.SetHistoryInfo.NumberOfHistoryBuffers;
+        Console->HistoryNoDup           = Request->Data.SetHistoryInfo.dwFlags
& HISTORY_NO_DUP_FLAG;
+        ConioUnlockConsole(Console);
+    }
+    return Status;
+}
+
+/* EOF */

Propchange: trunk/reactos/subsystems/win32/csrss/win32csr/history.c
------------------------------------------------------------------------------
    svn:eol-style = native