string[] IServerConfig.GetVirtualSubdirs(VirtualPath path, bool inApp)
{
// WOS 1956227: PERF: inactive applications on the web server degrade Working Set by 10%
// It is very expensive to get a list of subdirs not in the application if there are a lot of applications,
// so instead, use ProcessHostServerConfig.IsWithinApp to check if a particular path is in the app.
if (inApp == false)
{
throw new NotSupportedException();
}
string vpath = path.VirtualPathString;
string [] dirList = null;
int dirListCount = 0;
IntPtr pAppCollection = IntPtr.Zero;
IntPtr pBstr = IntPtr.Zero;
int cBstr = 0;
try {
int count = 0;
int result = _nativeConfig.MgdGetAppCollection(CurrentAppSiteName, vpath, out pBstr, out cBstr, out pAppCollection, out count);
if (result < 0 || pBstr == IntPtr.Zero)
{
throw new InvalidOperationException(SR.GetString(SR.Cant_Enumerate_NativeDirs, result));
}
string appRoot = StringUtil.StringFromWCharPtr(pBstr, cBstr);
Marshal.FreeBSTR(pBstr);
pBstr = IntPtr.Zero;
cBstr = 0;
dirList = new string[count];
int lenNoTrailingSlash = vpath.Length;
if (vpath[lenNoTrailingSlash - 1] == '/')
{
lenNoTrailingSlash--;
}
int lenAppRoot = appRoot.Length;
string appRootRelativePath = (lenNoTrailingSlash > lenAppRoot) ? vpath.Substring(lenAppRoot, lenNoTrailingSlash - lenAppRoot) : String.Empty;
for (uint index = 0; index < count; index++)
{
result = UnsafeIISMethods.MgdGetNextVPath(pAppCollection, index, out pBstr, out cBstr);
if (result < 0 || pBstr == IntPtr.Zero)
{
throw new InvalidOperationException(SR.GetString(SR.Cant_Enumerate_NativeDirs, result));
}
// if cBstr = 1, then pBstr = "/" and can be ignored
string subVdir = (cBstr > 1) ? StringUtil.StringFromWCharPtr(pBstr, cBstr) : null;
Marshal.FreeBSTR(pBstr);
pBstr = IntPtr.Zero;
cBstr = 0;
// only put the subVdir in our list if it is a subdirectory of the specified vpath
if (subVdir != null && subVdir.Length > appRootRelativePath.Length)
{
if (appRootRelativePath.Length == 0)
{
if (subVdir.IndexOf('/', 1) == -1)
{
dirList[dirListCount++] = subVdir.Substring(1);
}
}
else if (StringUtil.EqualsIgnoreCase(appRootRelativePath, 0, subVdir, 0, appRootRelativePath.Length))
{
int nextSlashIndex = subVdir.IndexOf('/', 1 + appRootRelativePath.Length);
if (nextSlashIndex > -1)
{
dirList[dirListCount++] = subVdir.Substring(appRootRelativePath.Length + 1, nextSlashIndex - appRootRelativePath.Length);
}
else
{
dirList[dirListCount++] = subVdir.Substring(appRootRelativePath.Length + 1);
}
}
}
}
}
finally {
if (pAppCollection != IntPtr.Zero)
{
Marshal.Release(pAppCollection);
pAppCollection = IntPtr.Zero;
}
if (pBstr != IntPtr.Zero)
{
Marshal.FreeBSTR(pBstr);
pBstr = IntPtr.Zero;
}
}
string[] subdirs = null;
if (dirListCount > 0)
{
subdirs = new string[dirListCount];
for (int i = 0; i < subdirs.Length; i++)
{
subdirs[i] = dirList[i];
}
}
return(subdirs);
}
