/* invoked from System.Web */
internal static IInternalConfigSystem ChangeConfigurationSystem(IInternalConfigSystem newSystem)
{
if (newSystem == null)
{
throw new ArgumentNullException("newSystem");
}
lock (lockobj)
{
// KLUDGE!! We need that when an assembly loaded inside an ASP.NET
// domain does OpenExeConfiguration ("") - we must return the path
// to web.config in that instance.
string t = newSystem.GetType().ToString();
if (String.Compare(t, "System.Web.Configuration.HttpConfigurationSystem", StringComparison.OrdinalIgnoreCase) == 0)
{
systemWebInUse = true;
}
else
{
systemWebInUse = false;
}
IInternalConfigSystem old = configSystem;
configSystem = newSystem;
return(old);
}
}
public override void SubstituteSystemConfiguration(IConfigurationFactory factory, IList <string> fileNames)
{
if (OriginalConfiguration != null)
{
throw new InvalidOperationException("Web system default configuration already substituted.");
}
IInternalConfigSystem originalConfigSystem = SubstituteConfigurationSystem(factory, fileNames);
// Web Part (10 level black magic starts here)
var httpConfigurationSystem = new ReflectionAccessor(originalConfigSystem.GetType());
// Get original values.
var configSystem = httpConfigurationSystem.GetField <IConfigSystem>("s_configSystem");
var replacingSystem = new NConfigSystemReplacement(configSystem, factory, fileNames);
// Substitute to decorated instances.
httpConfigurationSystem.SetField("s_configSystem", replacingSystem);
httpConfigurationSystem.SetField("s_configRoot", replacingSystem.Root);
// Refill system cache with new decorated records.
var systemWebAss = httpConfigurationSystem.AccessedType.Assembly;
var hostingEnviroment = new ReflectionAccessor(systemWebAss.GetType("System.Web.Hosting.HostingEnvironment"));
string siteId = hostingEnviroment.GetProperty <string>("SiteID");
string configPath = "dmachine/webroot/" + siteId;
var httpRuntime = new ReflectionAccessor(systemWebAss.GetType("System.Web.HttpRuntime"));
try
{
object cacheInternal = httpRuntime.GetProperty("CacheInternal");
var rootReplacement = replacingSystem.Root as NConfigRootReplacement;
// In case of single CPU internal caching uses CacheSingle.
if (cacheInternal.GetType().Name == "CacheSingle")
{
UpdateCacheSingle(rootReplacement, cacheInternal, configPath);
}
else
{
UpdateCacheMultiple(rootReplacement, configPath, cacheInternal);
}
}
catch (NullReferenceException)
{
// There is no CacheInternal in .Net 4.7.2
}
OriginalConfiguration = originalConfigSystem;
}
private static Configuration OpenExeConfigurationImpl(ConfigurationFileMap fileMap, bool isMachine, ConfigurationUserLevel userLevel, string exePath)
{
// exePath must be specified if not running inside ClientConfigurationSystem
if (!isMachine &&
(((fileMap == null) && (exePath == null)) ||
((fileMap != null) && ((( ExeConfigurationFileMap )fileMap).ExeConfigFilename == null))
)
)
{
if ((s_configSystem != null) &&
(s_configSystem.GetType() != typeof(ClientConfigurationSystem)))
{
throw new ArgumentException(SR.GetString(SR.Config_configmanager_open_noexe));
}
}
return(ClientConfigurationHost.OpenExeConfiguration(fileMap, isMachine, userLevel, exePath));
}
public override void SubstituteSystemConfiguration(IConfigurationFactory factory, IList <string> fileNames)
{
if (OriginalConfiguration != null)
{
throw new InvalidOperationException("Web system default configuration already substituted.");
}
IInternalConfigSystem originalConfigSystem = SubstituteConfigurationSystem(factory, fileNames);
// Web Part (10 level black magic starts here)
var httpConfigurationSystem = new ReflectionAccessor(originalConfigSystem.GetType());
// Get original values.
var configSystem = httpConfigurationSystem.GetField <IConfigSystem>("s_configSystem");
var replacingSystem = new NConfigSystemReplacement(configSystem, factory, fileNames);
// Substitute to decorated instances.
httpConfigurationSystem.SetField("s_configSystem", replacingSystem);
httpConfigurationSystem.SetField("s_configRoot", replacingSystem.Root);
// Refill system cache with new decorated records.
var systemWebAss = httpConfigurationSystem.AccessedType.Assembly;
var hostingEnviroment = new ReflectionAccessor(systemWebAss.GetType("System.Web.Hosting.HostingEnvironment"));
string siteId = hostingEnviroment.GetProperty <string>("SiteID");
string configPath = "dmachine/webroot/" + siteId;
var httpRuntime = new ReflectionAccessor(systemWebAss.GetType("System.Web.HttpRuntime"));
var internalCache = new ReflectionAccessor(httpRuntime.GetProperty("CacheInternal"));
var caches = internalCache.GetField("_caches") as IEnumerable ?? Enumerable.Empty <object>();
// Get all site specific configuration records keys for internal cache.
var rootReplacement = replacingSystem.Root as NConfigRootReplacement;
foreach (var cache in caches)
{
// Caches stored in array ala hash, so there is could be gaps.
if (cache == null)
{
continue;
}
var cacheAcessor = new ReflectionAccessor(cache);
lock (cacheAcessor.GetField("_lock"))
{
var entries = cacheAcessor.GetField("_entries") as IEnumerable ?? Enumerable.Empty <object>();
// entries is HashTable, so just iterate through
foreach (DictionaryEntry entry in entries)
{
var keyAccessor = new ReflectionAccessor(entry.Key);
// Only configuration cache entries replaced.
if (!keyAccessor.GetProperty("Key").ToString().StartsWith(configPath))
{
continue;
}
// Key and Value is the same object in the configuration cache entry.
var entryValueAccesor = new ReflectionAccessor(keyAccessor.GetField("_value"));
var runtimeConfigAccessor = new ReflectionAccessor(entryValueAccesor.GetField("_runtimeConfig"));
IInternalConfigRecord replacingRecord = rootReplacement.CreateConfigRecord(runtimeConfigAccessor.GetField <IInternalConfigRecord>("_configRecord"));
runtimeConfigAccessor.SetField("_configRecord", replacingRecord);
runtimeConfigAccessor.SetField("_runtimeConfigLKG", null);
}
}
}
OriginalConfiguration = originalConfigSystem;
}
private static System.Configuration.Configuration OpenExeConfigurationImpl(ConfigurationFileMap fileMap, bool isMachine, ConfigurationUserLevel userLevel, string exePath)
{
if ((!isMachine && (((fileMap == null) && (exePath == null)) || ((fileMap != null) && (((ExeConfigurationFileMap)fileMap).ExeConfigFilename == null)))) && ((s_configSystem != null) && (s_configSystem.GetType() != typeof(ClientConfigurationSystem))))
{
throw new ArgumentException(System.Configuration.SR.GetString("Config_configmanager_open_noexe"));
}
return(ClientConfigurationHost.OpenExeConfiguration(fileMap, isMachine, userLevel, exePath));
}
/* invoked from System.Web */
internal static IInternalConfigSystem ChangeConfigurationSystem (IInternalConfigSystem newSystem)
{
if (newSystem == null)
throw new ArgumentNullException ("newSystem");
lock (lockobj) {
// KLUDGE!! We need that when an assembly loaded inside an ASP.NET
// domain does OpenExeConfiguration ("") - we must return the path
// to web.config in that instance.
string t = newSystem.GetType ().ToString ();
if (String.Compare (t, "System.Web.Configuration.HttpConfigurationSystem", StringComparison.OrdinalIgnoreCase) == 0)
systemWebInUse = true;
else
systemWebInUse = false;
IInternalConfigSystem old = configSystem;
configSystem = newSystem;
return old;
}
}
