/// <summary>
/// Determines whether the GAC contains the specified code base URI.
/// </summary>
/// <param name="codeBaseUri">The code base URI.</param>
public static bool Contains(Uri codeBaseUri) {
Contract.Requires(codeBaseUri != null);
lock (GlobalLock.LockingObject) {
#if COMPACTFX
var gacKey = Microsoft.Win32.Registry.LocalMachine.OpenSubKey(@"\Software\Microsoft\.NETCompactFramework\Installer\Assemblies\Global");
if (gacKey == null) return false;
var codeBase = codeBaseUri.AbsoluteUri;
foreach (var gacName in gacKey.GetValueNames()) {
var values = gacKey.GetValue(gacName) as string[];
if (values == null || values.Length == 0) continue;
if (string.Equals(values[0], codeBase, StringComparison.OrdinalIgnoreCase)) return true;
if (values.Length > 1 && string.Equals(values[1], codeBase, StringComparison.OrdinalIgnoreCase)) return true;
}
return false;
#else
#if __MonoCS__
IAssemblyEnum assemblyEnum = new MonoAssemblyEnum();
#else
if (!GlobalAssemblyCache.FusionLoaded) {
GlobalAssemblyCache.FusionLoaded = true;
var systemAssembly = typeof(object).Assembly;
var systemAssemblyLocation = systemAssembly.Location;
string dir = Path.GetDirectoryName(systemAssemblyLocation)??"";
GlobalAssemblyCache.LoadLibrary(Path.Combine(dir, "fusion.dll"));
}
IAssemblyEnum assemblyEnum;
int rc = GlobalAssemblyCache.CreateAssemblyEnum(out assemblyEnum, null, null, ASM_CACHE.GAC, 0);
if (rc < 0 || assemblyEnum == null) return false;
#endif
IApplicationContext applicationContext;
IAssemblyName currentName;
while (assemblyEnum.GetNextAssembly(out applicationContext, out currentName, 0) == 0) {
//^ assume currentName != null;
AssemblyName assemblyName = new AssemblyName(currentName);
string/*?*/ scheme = codeBaseUri.Scheme;
if (scheme != null && assemblyName.CodeBase.StartsWith(scheme, StringComparison.OrdinalIgnoreCase)) {
try {
Uri foundUri = new Uri(assemblyName.CodeBase);
if (codeBaseUri.Equals(foundUri)) return true;
} catch (System.ArgumentNullException) {
} catch (System.UriFormatException) {
}
}
}
return false;
#endif
}
}
/// <summary>
/// Returns the original location of the corresponding assembly if available, otherwise returns the location of the shadow copy.
/// If the corresponding assembly is not in the GAC, null is returned.
/// </summary>
public static string/*?*/ GetLocation(AssemblyIdentity assemblyIdentity, IMetadataHost metadataHost) {
lock (GlobalLock.LockingObject) {
#if COMPACTFX
var gacKey = Microsoft.Win32.Registry.LocalMachine.OpenSubKey(@"\Software\Microsoft\.NETCompactFramework\Installer\Assemblies\Global");
foreach (var gacName in gacKey.GetValueNames()) {
if (IdentityMatchesString(assemblyIdentity, gacName)) {
var values = gacKey.GetValue(gacName) as string[];
if (values == null || values.Length == 0) continue;
return values[0];
}
}
return null;
#else
#if __MonoCS__
IAssemblyEnum assemblyEnum = new MonoAssemblyEnum();
#else
if (!GlobalAssemblyCache.FusionLoaded) {
GlobalAssemblyCache.FusionLoaded = true;
var systemAssembly = typeof(object).Assembly;
var systemAssemblyLocation = systemAssembly.Location;
var dir = Path.GetDirectoryName(systemAssemblyLocation)??"";
GlobalAssemblyCache.LoadLibrary(Path.Combine(dir, "fusion.dll"));
}
IAssemblyEnum assemblyEnum;
int rc = CreateAssemblyEnum(out assemblyEnum, null, null, ASM_CACHE.GAC, 0);
if (rc < 0 || assemblyEnum == null) return null;
#endif
IApplicationContext applicationContext;
IAssemblyName currentName;
while (assemblyEnum.GetNextAssembly(out applicationContext, out currentName, 0) == 0) {
//^ assume currentName != null;
AssemblyName cn = new AssemblyName(currentName);
if (assemblyIdentity.Equals(new AssemblyIdentity(metadataHost.NameTable.GetNameFor(cn.Name), cn.Culture, cn.Version, cn.PublicKeyToken, ""))) {
string codeBase = cn.CodeBase;
if (codeBase != null && codeBase.StartsWith("file://", StringComparison.OrdinalIgnoreCase)) {
Uri u = new Uri(codeBase, UriKind.Absolute);
return u.LocalPath;
}
return cn.GetLocation();
}
}
return null;
#endif
}
}
