[spetreolle] 45125: Add parameters check to ReadEventLog. Fixes last advapi32:eventlog crash

Author: spetreolle
Date: Sun Jan 17 22:40:39 2010
New Revision: 45125

URL: http://svn.reactos.org/svn/reactos?rev=45125&view=rev
Log:
Add parameters check to ReadEventLog.
Fixes last advapi32:eventlog crash

Modified:
    trunk/reactos/dll/win32/advapi32/service/eventlog.c

Modified: trunk/reactos/dll/win32/advapi32/service/eventlog.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/dll/win32/advapi32/service/...
==============================================================================
--- trunk/reactos/dll/win32/advapi32/service/eventlog.c [iso-8859-1] (original)
+++ trunk/reactos/dll/win32/advapi32/service/eventlog.c [iso-8859-1] Sun Jan 17 22:40:39 2010
@@ -672,6 +672,12 @@
     TRACE("%p, %lu, %lu, %p, %lu, %p, %p\n",
         hEventLog, dwReadFlags, dwRecordOffset, lpBuffer,
         nNumberOfBytesToRead, pnBytesRead, pnMinNumberOfBytesNeeded);
+
+    if(!pnBytesRead || !pnMinNumberOfBytesNeeded)
+    {
+        SetLastError(ERROR_INVALID_PARAMETER);
+        return FALSE;
+    }

/* If buffer is NULL set nNumberOfBytesToRead to 0 to prevent rpcrt4 from
        trying to access a null pointer */
@@ -736,6 +742,12 @@
     TRACE("%p, %lu, %lu, %p, %lu, %p, %p\n",
         hEventLog, dwReadFlags, dwRecordOffset, lpBuffer,
         nNumberOfBytesToRead, pnBytesRead, pnMinNumberOfBytesNeeded);
+
+    if(!pnBytesRead || !pnMinNumberOfBytesNeeded)
+    {
+        SetLastError(ERROR_INVALID_PARAMETER);
+        return FALSE;
+    }

/* If buffer is NULL set nNumberOfBytesToRead to 0 to prevent rpcrt4 from
        trying to access a null pointer */