/// <summary>
/// Clears the cache of the web browser
/// </summary>
public static void ClearCache()
{
// Indicates that all of the cache groups in the user's system should be enumerated
const int CACHEGROUP_SEARCH_ALL = 0x0;
// Indicates that all the cache entries that are associated with the cache group
// should be deleted, unless the entry belongs to another cache group.
const int CACHEGROUP_FLAG_FLUSHURL_ONDELETE = 0x2;
const int ERROR_INSUFFICIENT_BUFFER = 0x7A;
// Delete the groups first.
// Groups may not always exist on the system.
// For more information, visit the following Microsoft Web site:
// http://msdn.microsoft.com/library/?url=/workshop/networking/wininet/overview/cache.asp
// By default, a URL does not belong to any group. Therefore, that cache may become
// empty even when the CacheGroup APIs are not used because the existing URL does not belong to any group.
long groupId = 0;
IntPtr enumHandle = FindFirstUrlCacheGroup(0, CACHEGROUP_SEARCH_ALL, IntPtr.Zero, 0, ref groupId, IntPtr.Zero);
if (enumHandle != IntPtr.Zero)
{
bool more;
do
{
// Delete a particular Cache Group.
DeleteUrlCacheGroup(groupId, CACHEGROUP_FLAG_FLUSHURL_ONDELETE, IntPtr.Zero);
more = FindNextUrlCacheGroup(enumHandle, ref groupId, IntPtr.Zero);
} while (more);
}
// Start to delete URLs that do not belong to any group.
int cacheEntryInfoBufferSizeInitial = 0;
FindFirstUrlCacheEntry(null, IntPtr.Zero,
ref cacheEntryInfoBufferSizeInitial); // should always fail because buffer is too small
if (Marshal.GetLastWin32Error() == ERROR_INSUFFICIENT_BUFFER)
{
int cacheEntryInfoBufferSize = cacheEntryInfoBufferSizeInitial;
IntPtr cacheEntryInfoBuffer = Marshal.AllocHGlobal(cacheEntryInfoBufferSize);
enumHandle = FindFirstUrlCacheEntry(null, cacheEntryInfoBuffer, ref cacheEntryInfoBufferSizeInitial);
if (enumHandle != IntPtr.Zero)
{
bool more;
do
{
INTERNET_CACHE_ENTRY_INFOA internetCacheEntry =
(INTERNET_CACHE_ENTRY_INFOA)Marshal.PtrToStructure(cacheEntryInfoBuffer, typeof(INTERNET_CACHE_ENTRY_INFOA));
cacheEntryInfoBufferSizeInitial = cacheEntryInfoBufferSize;
DeleteUrlCacheEntry(internetCacheEntry.lpszSourceUrlName);
more = FindNextUrlCacheEntry(enumHandle, cacheEntryInfoBuffer, ref cacheEntryInfoBufferSizeInitial);
if (!more && Marshal.GetLastWin32Error() == ERROR_INSUFFICIENT_BUFFER)
{
cacheEntryInfoBufferSize = cacheEntryInfoBufferSizeInitial;
cacheEntryInfoBuffer = Marshal.ReAllocHGlobal(cacheEntryInfoBuffer, (IntPtr)cacheEntryInfoBufferSize);
more = FindNextUrlCacheEntry(enumHandle, cacheEntryInfoBuffer, ref cacheEntryInfoBufferSizeInitial);
}
} while (more);
}
Marshal.FreeHGlobal(cacheEntryInfoBuffer);
}
}
public static void DeleteUrlCache(string url)
{
// Pointer to a GROUPID variable
long groupId = 0;
// Local variables
int cacheEntryInfoBufferSizeInitial = 0;
int cacheEntryInfoBufferSize = 0;
bool returnValue = false;
IntPtr enumHandle = FindFirstUrlCacheGroup(0, CACHEGROUP_SEARCH_ALL, IntPtr.Zero, 0, ref groupId, IntPtr.Zero);
//If there are no items in the Cache, you are finished.
if ((!enumHandle.Equals(IntPtr.Zero) & ERROR_NO_MORE_ITEMS.Equals(Marshal.GetLastWin32Error())))
{
return;
}
//Loop through Cache Group.
enumHandle = FindFirstUrlCacheEntry("", IntPtr.Zero, ref cacheEntryInfoBufferSizeInitial);
if ((!enumHandle.Equals(IntPtr.Zero) & ERROR_NO_MORE_ITEMS.Equals(Marshal.GetLastWin32Error())))
{
return;
}
cacheEntryInfoBufferSize = cacheEntryInfoBufferSizeInitial;
IntPtr cacheEntryInfoBuffer = Marshal.AllocHGlobal(cacheEntryInfoBufferSize);
enumHandle = FindFirstUrlCacheEntry("", cacheEntryInfoBuffer, ref cacheEntryInfoBufferSizeInitial);
while (true)
{
INTERNET_CACHE_ENTRY_INFOA internetCacheEntry = (INTERNET_CACHE_ENTRY_INFOA)Marshal.PtrToStructure(cacheEntryInfoBuffer, typeof(INTERNET_CACHE_ENTRY_INFOA));
cacheEntryInfoBufferSizeInitial = cacheEntryInfoBufferSize;
string sourceUrlName = Marshal.PtrToStringAnsi(internetCacheEntry.lpszSourceUrlName);
if (sourceUrlName == url)
{
returnValue = DeleteUrlCacheEntry(internetCacheEntry.lpszSourceUrlName);
}
returnValue = FindNextUrlCacheEntry(enumHandle, cacheEntryInfoBuffer, ref cacheEntryInfoBufferSizeInitial);
if (!returnValue & Marshal.GetLastWin32Error() == ERROR_NO_MORE_ITEMS)
{
break;
}
if (!returnValue & cacheEntryInfoBufferSizeInitial > cacheEntryInfoBufferSize)
{
cacheEntryInfoBufferSize = cacheEntryInfoBufferSizeInitial;
IntPtr tempIntPtr = new IntPtr(cacheEntryInfoBufferSize);
cacheEntryInfoBuffer = Marshal.ReAllocHGlobal(cacheEntryInfoBuffer, tempIntPtr);
returnValue = FindNextUrlCacheEntry(enumHandle, cacheEntryInfoBuffer, ref cacheEntryInfoBufferSizeInitial);
}
}
Marshal.FreeHGlobal(cacheEntryInfoBuffer);
}
// Methods
public static void Purge()
{
Trace.WriteLine("CachePurger: Start");
long lpGroupId = 0L;
int lpdwFirstCacheEntryInfoBufferSize = 0;
IntPtr zero = IntPtr.Zero;
IntPtr hFind = NativeMethods.FindFirstUrlCacheGroup(0, 0, IntPtr.Zero, 0, ref lpGroupId, IntPtr.Zero);
if (!hFind.Equals(IntPtr.Zero) && Win32ErrorNoMoreItems())
{
return;
}
do
{
NativeMethods.DeleteUrlCacheGroup(lpGroupId, 2, IntPtr.Zero);
}while (NativeMethods.FindNextUrlCacheGroup(hFind, ref lpGroupId, IntPtr.Zero));
if (!NativeMethods.FindFirstUrlCacheEntry(null, IntPtr.Zero, ref lpdwFirstCacheEntryInfoBufferSize).Equals(IntPtr.Zero) && Win32ErrorNoMoreItems())
{
return;
}
try
{
int cb = lpdwFirstCacheEntryInfoBufferSize;
zero = Marshal.AllocHGlobal(cb);
hFind = NativeMethods.FindFirstUrlCacheEntry(null, zero, ref lpdwFirstCacheEntryInfoBufferSize);
while (true)
{
do
{
INTERNET_CACHE_ENTRY_INFOA internet_cache_entry_infoa = (INTERNET_CACHE_ENTRY_INFOA)Marshal.PtrToStructure(zero, typeof(INTERNET_CACHE_ENTRY_INFOA));
lpdwFirstCacheEntryInfoBufferSize = cb;
NativeMethods.DeleteUrlCacheEntry(internet_cache_entry_infoa.lpszSourceUrlName);
}while (NativeMethods.FindNextUrlCacheEntry(hFind, zero, ref lpdwFirstCacheEntryInfoBufferSize));
if (Win32ErrorNoMoreItems() || lpdwFirstCacheEntryInfoBufferSize.Equals(0))
{
goto Label_0137;
}
if (lpdwFirstCacheEntryInfoBufferSize > cb)
{
cb = lpdwFirstCacheEntryInfoBufferSize;
zero = Marshal.ReAllocHGlobal(zero, (IntPtr)cb);
}
NativeMethods.FindNextUrlCacheEntry(hFind, zero, ref lpdwFirstCacheEntryInfoBufferSize);
}
}
finally
{
Marshal.FreeHGlobal(zero);
}
Label_0137:
Trace.WriteLine("CachePurger: End");
}
internal static string GetCacheItemInfo(string sURL)
{
int lpdwCacheEntryInfoBufferSize = 0;
int cb = 0;
IntPtr zero = IntPtr.Zero;
bool flag = GetUrlCacheEntryInfoA(sURL, zero, ref lpdwCacheEntryInfoBufferSize);
int num = Marshal.GetLastWin32Error();
if (flag || (num != 0x7a))
{
return(string.Format("This URL is not present in the WinINET cache. [Code: {0}]", num));
}
cb = lpdwCacheEntryInfoBufferSize;
zero = Marshal.AllocHGlobal(cb);
flag = GetUrlCacheEntryInfoA(sURL, zero, ref lpdwCacheEntryInfoBufferSize);
num = Marshal.GetLastWin32Error();
if (!flag)
{
Marshal.FreeHGlobal(zero);
return("GetUrlCacheEntryInfoA with buffer failed. 2=filenotfound 122=insufficient buffer, 259=nomoreitems. Last error: " + num.ToString() + "\n");
}
INTERNET_CACHE_ENTRY_INFOA internet_cache_entry_infoa = (INTERNET_CACHE_ENTRY_INFOA)Marshal.PtrToStructure(zero, typeof(INTERNET_CACHE_ENTRY_INFOA));
lpdwCacheEntryInfoBufferSize = cb;
long fileTime = (internet_cache_entry_infoa.LastModifiedTime.dwHighDateTime << 0x20) | ((long)((ulong)internet_cache_entry_infoa.LastModifiedTime.dwLowDateTime));
long num5 = (internet_cache_entry_infoa.LastAccessTime.dwHighDateTime << 0x20) | ((long)((ulong)internet_cache_entry_infoa.LastAccessTime.dwLowDateTime));
long num6 = (internet_cache_entry_infoa.LastSyncTime.dwHighDateTime << 0x20) | ((long)((ulong)internet_cache_entry_infoa.LastSyncTime.dwLowDateTime));
long num7 = (internet_cache_entry_infoa.ExpireTime.dwHighDateTime << 0x20) | ((long)((ulong)internet_cache_entry_infoa.ExpireTime.dwLowDateTime));
string[] strArray = new string[] {
"Url:\t\t", Marshal.PtrToStringAnsi(internet_cache_entry_infoa.lpszSourceUrlName), "\nCache File:\t", Marshal.PtrToStringAnsi(internet_cache_entry_infoa.lpszLocalFileName), "\nSize:\t\t", ((ulong)((internet_cache_entry_infoa.dwSizeHigh << 0x20) + internet_cache_entry_infoa.dwSizeLow)).ToString("0,0"), " bytes\nFile Extension:\t", Marshal.PtrToStringAnsi(internet_cache_entry_infoa.lpszFileExtension), "\nHit Rate:\t", internet_cache_entry_infoa.dwHitRate.ToString(), "\nUse Count:\t", internet_cache_entry_infoa.dwUseCount.ToString(), "\nDon't Scavenge for:\t", internet_cache_entry_infoa._Union.dwExemptDelta.ToString(), " seconds\nLast Modified:\t", DateTime.FromFileTime(fileTime).ToString(),
"\nLast Accessed:\t", DateTime.FromFileTime(num5).ToString(), "\nLast Synced: \t", DateTime.FromFileTime(num6).ToString(), "\nEntry Expires:\t", DateTime.FromFileTime(num7).ToString(), "\n"
};
string str = string.Concat(strArray);
Marshal.FreeHGlobal(zero);
return(str);
}
public static void ClearCache()
{
bool flag;
bool flag1;
long num = (long)0;
int num1 = 0;
int num2 = 0;
IntPtr zero = IntPtr.Zero;
IntPtr intPtr = IntPtr.Zero;
bool flag2 = false;
intPtr = FindFirstUrlCacheGroup(0, 0, IntPtr.Zero, 0, ref num, IntPtr.Zero);
if ((intPtr == IntPtr.Zero ? true : 259 != Marshal.GetLastWin32Error()))
{
while (true)
{
flag = true;
if ((259 == Marshal.GetLastWin32Error() ? false : 2 != Marshal.GetLastWin32Error()))
{
flag2 = DeleteUrlCacheGroup(num, 2, IntPtr.Zero);
if ((flag2 ? false : 2 == Marshal.GetLastWin32Error()))
{
flag2 = FindNextUrlCacheGroup(intPtr, ref num, IntPtr.Zero);
}
if (flag2)
{
flag1 = true;
}
else
{
flag1 = (259 == Marshal.GetLastWin32Error() ? false : 2 != Marshal.GetLastWin32Error());
}
if (!flag1)
{
break;
}
}
else
{
break;
}
}
intPtr = FindFirstUrlCacheEntry(null, IntPtr.Zero, ref num1);
if ((intPtr == IntPtr.Zero ? true : 259 != Marshal.GetLastWin32Error()))
{
num2 = num1;
zero = Marshal.AllocHGlobal(num2);
intPtr = FindFirstUrlCacheEntry(null, zero, ref num1);
while (true)
{
flag = true;
INTERNET_CACHE_ENTRY_INFOA structure = (INTERNET_CACHE_ENTRY_INFOA)Marshal.PtrToStructure(zero, typeof(INTERNET_CACHE_ENTRY_INFOA));
if (259 != Marshal.GetLastWin32Error())
{
num1 = num2;
flag2 = DeleteUrlCacheEntry(structure.lpszSourceUrlName);
if (!flag2)
{
flag2 = FindNextUrlCacheEntry(intPtr, zero, ref num1);
}
if (!(flag2 ? true : 259 != Marshal.GetLastWin32Error()))
{
break;
}
else if ((flag2 ? false : num1 > num2))
{
num2 = num1;
zero = Marshal.ReAllocHGlobal(zero, (IntPtr)num2);
flag2 = FindNextUrlCacheEntry(intPtr, zero, ref num1);
}
}
else
{
break;
}
}
Marshal.FreeHGlobal(zero);
}
}
}
public static void ClearCacheItems(bool bClearFiles, bool bClearCookies)
{
if (!bClearCookies && !bClearFiles)
{
throw new ArgumentException("You must call ClearCacheItems with at least one target");
}
if (Environment.OSVersion.Version.Major > 5)
{
VistaClearTracks(bClearFiles, bClearCookies);
}
else
{
if (bClearCookies)
{
ClearCookiesForHost("*");
}
if (bClearFiles)
{
long lpGroupId = 0L;
int lpdwFirstCacheEntryInfoBufferSize = 0;
int cb = 0;
IntPtr zero = IntPtr.Zero;
IntPtr hFind = IntPtr.Zero;
bool flag = false;
hFind = FindFirstUrlCacheGroup(0, 0, IntPtr.Zero, 0, ref lpGroupId, IntPtr.Zero);
int num4 = Marshal.GetLastWin32Error();
if (((hFind != IntPtr.Zero) && (0x103 != num4)) && (2 != num4))
{
do
{
flag = DeleteUrlCacheGroup(lpGroupId, 2, IntPtr.Zero);
num4 = Marshal.GetLastWin32Error();
if (!flag && (2 == num4))
{
flag = FindNextUrlCacheGroup(hFind, ref lpGroupId, IntPtr.Zero);
num4 = Marshal.GetLastWin32Error();
}
}while (flag || ((0x103 != num4) && (2 != num4)));
}
hFind = FindFirstUrlCacheEntryEx(null, 0, WININETCACHEENTRYTYPE.ALL, 0L, IntPtr.Zero, ref lpdwFirstCacheEntryInfoBufferSize, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero);
num4 = Marshal.GetLastWin32Error();
if ((IntPtr.Zero != hFind) || (0x103 != num4))
{
cb = lpdwFirstCacheEntryInfoBufferSize;
zero = Marshal.AllocHGlobal(cb);
hFind = FindFirstUrlCacheEntryEx(null, 0, WININETCACHEENTRYTYPE.ALL, 0L, zero, ref lpdwFirstCacheEntryInfoBufferSize, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero);
num4 = Marshal.GetLastWin32Error();
do
{
INTERNET_CACHE_ENTRY_INFOA internet_cache_entry_infoa = (INTERNET_CACHE_ENTRY_INFOA)Marshal.PtrToStructure(zero, typeof(INTERNET_CACHE_ENTRY_INFOA));
lpdwFirstCacheEntryInfoBufferSize = cb;
if (WININETCACHEENTRYTYPE.COOKIE_CACHE_ENTRY != (internet_cache_entry_infoa.CacheEntryType & WININETCACHEENTRYTYPE.COOKIE_CACHE_ENTRY))
{
flag = DeleteUrlCacheEntry(internet_cache_entry_infoa.lpszSourceUrlName);
}
flag = FindNextUrlCacheEntryEx(hFind, zero, ref lpdwFirstCacheEntryInfoBufferSize, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero);
num4 = Marshal.GetLastWin32Error();
if (!flag && (0x103 == num4))
{
break;
}
if (!flag && (lpdwFirstCacheEntryInfoBufferSize > cb))
{
cb = lpdwFirstCacheEntryInfoBufferSize;
zero = Marshal.ReAllocHGlobal(zero, (IntPtr)cb);
flag = FindNextUrlCacheEntryEx(hFind, zero, ref lpdwFirstCacheEntryInfoBufferSize, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero);
}
}while (flag);
Marshal.FreeHGlobal(zero);
}
}
}
}
public static Dictionary <string, IeHistoryEntry> GetURLCache()
{
// Pointer to a GROUPID variable.
long groupId = 0;
// Local variables.
int cacheEntryInfoBufferSizeInitial = 0;
int cacheEntryInfoBufferSize = 0;
bool returnValue = false;
IntPtr enumHandle = FindFirstUrlCacheGroup(0, CACHEGROUP_SEARCH_ALL, IntPtr.Zero, 0, ref groupId, IntPtr.Zero);
//If there are no items in the Cache, you are finished.
if ((!enumHandle.Equals(IntPtr.Zero) & ERROR_NO_MORE_ITEMS.Equals(Marshal.GetLastWin32Error())))
{
return(null);
}
//Loop through Cache Group.
enumHandle = FindFirstUrlCacheEntry(null, IntPtr.Zero, ref cacheEntryInfoBufferSizeInitial);
if ((!enumHandle.Equals(IntPtr.Zero) & ERROR_NO_MORE_ITEMS.Equals(Marshal.GetLastWin32Error())))
{
return(null);
}
cacheEntryInfoBufferSize = cacheEntryInfoBufferSizeInitial;
IntPtr cacheEntryInfoBuffer = Marshal.AllocHGlobal(cacheEntryInfoBufferSize);
enumHandle = FindFirstUrlCacheEntry(null, cacheEntryInfoBuffer, ref cacheEntryInfoBufferSizeInitial);
Dictionary <string, IeHistoryEntry> list = new Dictionary <string, IeHistoryEntry>();
while (true)
{
INTERNET_CACHE_ENTRY_INFOA internetCacheEntry = (INTERNET_CACHE_ENTRY_INFOA)Marshal.PtrToStructure(cacheEntryInfoBuffer, typeof(INTERNET_CACHE_ENTRY_INFOA));
cacheEntryInfoBufferSizeInitial = cacheEntryInfoBufferSize;
IeHistoryEntry entry = new IeHistoryEntry();
entry.SourceUrlName = Marshal.PtrToStringAnsi(internetCacheEntry.lpszSourceUrlName);
entry.LastAccessDate = FileTime2SystemTime(ref internetCacheEntry.LastAccessTime).ToString();
entry.Type = (EntryType)Enum.Parse(typeof(EntryType), internetCacheEntry.CacheEntryType.ToString());
entry.Url = Marshal.PtrToStringAnsi(internetCacheEntry.lpszLocalFileName);
entry.Extension = Marshal.PtrToStringAnsi(internetCacheEntry.lpszFileExtension);
entry.HeaderInfo = Marshal.PtrToStringAnsi(internetCacheEntry.lpHeaderInfo);
entry.HitRate = internetCacheEntry.dwHitRate.ToString();
entry.LastModifiedTime = FileTime2SystemTime(ref internetCacheEntry.LastModifiedTime).ToString();
entry.LastSyncTime = FileTime2SystemTime(ref internetCacheEntry.LastSyncTime).ToString();
entry.UseCount = internetCacheEntry.dwUseCount.ToString();
string url = entry.SourceUrlName;
int position = url.IndexOf("@");
if (position != -1)
{
url = url.Substring(position + 1);
}
if (!list.ContainsKey(url))
{
list.Add(url, entry);
}
returnValue = FindNextUrlCacheEntry(enumHandle, cacheEntryInfoBuffer, ref cacheEntryInfoBufferSizeInitial);
if (!returnValue & ERROR_NO_MORE_ITEMS.Equals(Marshal.GetLastWin32Error()))
{
break;
}
if (!returnValue & cacheEntryInfoBufferSizeInitial > cacheEntryInfoBufferSize)
{
cacheEntryInfoBufferSize = cacheEntryInfoBufferSizeInitial;
IntPtr tempIntPtr = new IntPtr(cacheEntryInfoBufferSize);
cacheEntryInfoBuffer = Marshal.ReAllocHGlobal(cacheEntryInfoBuffer, tempIntPtr);
returnValue = FindNextUrlCacheEntry(enumHandle, cacheEntryInfoBuffer, ref cacheEntryInfoBufferSizeInitial);
}
}
Marshal.FreeHGlobal(cacheEntryInfoBuffer);
return(list);
}
public static void ClearCache(bool includeCookies)
{
if (Environment.OSVersion.Version.Major > 5)
{
InetCplClearTracks(true, includeCookies);
}
else
{
if (includeCookies)
{
ClearCookies("*");
}
long lpGroupId = 0L;
int num1 = 0;
IntPtr num2 = IntPtr.Zero;
IntPtr num3 = IntPtr.Zero;
bool flag1 = false;
IntPtr firstUrlCacheGroup = FindFirstUrlCacheGroup(0, 0, IntPtr.Zero, 0, ref lpGroupId, IntPtr.Zero);
int lastWin32Error1 = Marshal.GetLastWin32Error();
if (firstUrlCacheGroup != IntPtr.Zero && 259 != lastWin32Error1 && 2 != lastWin32Error1)
{
bool flag2;
int lastWin32Error2;
do
{
flag2 = DeleteUrlCacheGroup(lpGroupId, 2, IntPtr.Zero);
lastWin32Error2 = Marshal.GetLastWin32Error();
if (!flag2 && 2 == lastWin32Error2)
{
flag2 = FindNextUrlCacheGroup(firstUrlCacheGroup, ref lpGroupId, IntPtr.Zero);
lastWin32Error2 = Marshal.GetLastWin32Error();
}
}while (flag2 || 259 != lastWin32Error2 && 2 != lastWin32Error2);
}
IntPtr firstUrlCacheEntryEx1 = FindFirstUrlCacheEntryEx((string)null, 0, WININETCACHEENTRYTYPE.ALL, 0L, IntPtr.Zero, ref num1, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero);
int lastWin32Error3 = Marshal.GetLastWin32Error();
if (IntPtr.Zero == firstUrlCacheEntryEx1 && 259 == lastWin32Error3)
{
return;
}
int cb = num1;
IntPtr num4 = Marshal.AllocHGlobal(cb);
IntPtr firstUrlCacheEntryEx2 = FindFirstUrlCacheEntryEx((string)null, 0, WININETCACHEENTRYTYPE.ALL, 0L, num4, ref num1, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero);
Marshal.GetLastWin32Error();
bool nextUrlCacheEntryEx;
do
{
INTERNET_CACHE_ENTRY_INFOA internetCacheEntryInfoa = (INTERNET_CACHE_ENTRY_INFOA)Marshal.PtrToStructure(num4, typeof(INTERNET_CACHE_ENTRY_INFOA));
num1 = cb;
if (WININETCACHEENTRYTYPE.COOKIE_CACHE_ENTRY != (internetCacheEntryInfoa.CacheEntryType & WININETCACHEENTRYTYPE.COOKIE_CACHE_ENTRY))
{
flag1 = DeleteUrlCacheEntry(internetCacheEntryInfoa.lpszSourceUrlName);
}
nextUrlCacheEntryEx = FindNextUrlCacheEntryEx(firstUrlCacheEntryEx2, num4, ref num1, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero);
int lastWin32Error2 = Marshal.GetLastWin32Error();
if (nextUrlCacheEntryEx || 259 != lastWin32Error2)
{
if (!nextUrlCacheEntryEx && num1 > cb)
{
cb = num1;
num4 = Marshal.ReAllocHGlobal(num4, (IntPtr)cb);
nextUrlCacheEntryEx = FindNextUrlCacheEntryEx(firstUrlCacheEntryEx2, num4, ref num1, IntPtr.Zero, IntPtr.Zero, IntPtr.Zero);
}
}
else
{
break;
}
}while (nextUrlCacheEntryEx);
Marshal.FreeHGlobal(num4);
}
}
/// <summary>
/// Delete all permanent WinINET cookies for host; won't clear memory-only session cookies.
/// Supports hostnames with an optional leading wildcard, e.g. *example.com.
/// NOTE: Will not work on VistaIE Protected Mode cookies.
/// </summary>
/// <param name="host">The hostname whose cookies should be cleared</param>
public static void ClearCookies(string host)
{
host = host.Trim();
if (host.Length < 1)
{
return;
}
string str1;
if (host == "*")
{
str1 = string.Empty;
if (Environment.OSVersion.Version.Major > 5)
{
InetCplClearTracks(false, true);
return;
}
}
else
{
str1 = host.StartsWith("*") ? host.Substring(1).ToLower() : "@" + host.ToLower();
}
int num1 = 0;
IntPtr num2 = IntPtr.Zero;
IntPtr num3 = IntPtr.Zero;
if (FindFirstUrlCacheEntry("cookie:", IntPtr.Zero, ref num1) == IntPtr.Zero && 259 == Marshal.GetLastWin32Error())
{
return;
}
int cb = num1;
IntPtr num4 = Marshal.AllocHGlobal(cb);
IntPtr firstUrlCacheEntry = FindFirstUrlCacheEntry("cookie:", num4, ref num1);
label_8:
INTERNET_CACHE_ENTRY_INFOA internetCacheEntryInfoa = (INTERNET_CACHE_ENTRY_INFOA)Marshal.PtrToStructure(num4, typeof(INTERNET_CACHE_ENTRY_INFOA));
num1 = cb;
if (WININETCACHEENTRYTYPE.COOKIE_CACHE_ENTRY == (internetCacheEntryInfoa.CacheEntryType & WININETCACHEENTRYTYPE.COOKIE_CACHE_ENTRY))
{
bool flag;
if (str1.Length == 0)
{
flag = true;
}
else
{
string str2 = Marshal.PtrToStringAnsi(internetCacheEntryInfoa.lpszSourceUrlName);
int startIndex = str2.IndexOf('/');
if (startIndex > 0)
{
str2 = str2.Remove(startIndex);
}
flag = str2.ToLower().EndsWith(str1);
}
if (flag)
{
DeleteUrlCacheEntry(internetCacheEntryInfoa.lpszSourceUrlName);
}
}
while (true)
{
bool nextUrlCacheEntry = FindNextUrlCacheEntry(firstUrlCacheEntry, num4, ref num1);
if (nextUrlCacheEntry || 259 != Marshal.GetLastWin32Error())
{
if (!nextUrlCacheEntry && num1 > cb)
{
cb = num1;
num4 = Marshal.ReAllocHGlobal(num4, (IntPtr)cb);
}
else
{
goto label_8;
}
}
else
{
break;
}
}
Marshal.FreeHGlobal(num4);
}
