public void Fields()
{
// fields are not available in iOS (at least up to 5.1.1)
// this test will fail if this ever change in the future
IntPtr lib = Dlfcn.dlopen(Constants.FoundationLibrary, 0);
try {
Assert.That(Dlfcn.dlsym(lib, "NSFontAttributeName"), Is.EqualTo(IntPtr.Zero), "NSFontAttributeName");
Assert.That(Dlfcn.dlsym(lib, "NSLinkAttributeName"), Is.EqualTo(IntPtr.Zero), "NSLinkAttributeName");
Assert.That(Dlfcn.dlsym(lib, "NSUnderlineStyleAttributeName"), Is.EqualTo(IntPtr.Zero), "NSUnderlineStyleAttributeName");
Assert.That(Dlfcn.dlsym(lib, "NSStrikethroughStyleAttributeName"), Is.EqualTo(IntPtr.Zero), "NSStrikethroughStyleAttributeName");
Assert.That(Dlfcn.dlsym(lib, "NSStrokeWidthAttributeName"), Is.EqualTo(IntPtr.Zero), "NSStrokeWidthAttributeName");
Assert.That(Dlfcn.dlsym(lib, "NSParagraphStyleAttributeName"), Is.EqualTo(IntPtr.Zero), "NSParagraphStyleAttributeName");
Assert.That(Dlfcn.dlsym(lib, "NSForegroundColorAttributeName"), Is.EqualTo(IntPtr.Zero), "NSForegroundColorAttributeName");
Assert.That(Dlfcn.dlsym(lib, "NSBackgroundColorAttributeName"), Is.EqualTo(IntPtr.Zero), "NSBackgroundColorAttributeName");
Assert.That(Dlfcn.dlsym(lib, "NSLigatureAttributeName"), Is.EqualTo(IntPtr.Zero), "NSLigatureAttributeName");
Assert.That(Dlfcn.dlsym(lib, "NSObliquenessAttributeName"), Is.EqualTo(IntPtr.Zero), "NSObliquenessAttributeName");
}
finally {
Dlfcn.dlclose(lib);
}
}
static CMTimeRange()
{
var lib = Libraries.CoreMedia.Handle;
var retZero = Dlfcn.dlsym(lib, "kCMTimeRangeZero");
Zero = (CMTimeRange)Marshal.PtrToStructure(retZero, typeof(CMTimeRange));
var retInvalid = Dlfcn.dlsym(lib, "kCMTimeRangeInvalid");
#if !XAMCORE_3_0
Invalid = (CMTimeRange)Marshal.PtrToStructure(retInvalid, typeof(CMTimeRange));
#endif
InvalidRange = (CMTimeRange)Marshal.PtrToStructure(retInvalid, typeof(CMTimeRange));
var retMappingInvalid = Dlfcn.dlsym(lib, "kCMTimeMappingInvalid");
if (retMappingInvalid != IntPtr.Zero)
{
InvalidMapping = (CMTimeRange)Marshal.PtrToStructure(retMappingInvalid, typeof(CMTimeRange));
}
TimeMappingSourceKey = Dlfcn.GetStringConstant(lib, "kCMTimeMappingSourceKey");
TimeMappingTargetKey = Dlfcn.GetStringConstant(lib, "kCMTimeMappingTargetKey");
}
public void Fields()
{
// documented as new in iOS 5.0 - https://developer.apple.com/library/ios/DOCUMENTATION/CoreLocation/Reference/CoreLocationConstantsRef/CoreLocationConstantsRef.pdf
// in PDF only, not in the HTML documentation - but it's also inside CLError.h
// this test will fail if Apple decide to include them in the future
IntPtr lib = Dlfcn.dlopen(Constants.CoreLocationLibrary, 0);
try {
string field = "kCLErrorUserInfoAlternateRegionKey";
var p = Dlfcn.dlsym(lib, field);
if (TestRuntime.CheckiOSSystemVersion(7, 1))
{
Assert.That(p, Is.Not.EqualTo(IntPtr.Zero), field);
}
else
{
Assert.That(p, Is.EqualTo(IntPtr.Zero), field);
}
}
finally {
Dlfcn.dlclose(lib);
}
}
public VnodeMonitor(string path, VnodeMonitorKind vnodeKind, DispatchQueue queue = null)
{
if (path == null)
{
throw new ArgumentNullException("path");
}
fd = open(path, O_EVTONLY);
if (fd == -1)
{
throw new IOException("Failure to open the file", Marshal.GetLastWin32Error());
}
if (type_vnode == IntPtr.Zero)
{
type_vnode = Dlfcn.dlsym(Libraries.System.Handle, "_dispatch_source_type_vnode");
}
this.queue = queue;
handle = dispatch_source_create(type_vnode,
handle: (IntPtr)fd,
mask: (IntPtr)vnodeKind,
queue: queue == null ? IntPtr.Zero : queue.Handle);
}
// we just want to confirm the symbol exists so `dlsym` can be disabled
protected void Check(Assembly a)
{
Errors = 0;
ErrorData.Clear();
int n = 0;
foreach (var t in a.GetTypes())
{
foreach (var m in t.GetMethods(BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Static))
{
if ((m.Attributes & MethodAttributes.PinvokeImpl) == 0)
{
continue;
}
var dllimport = m.GetCustomAttribute <DllImportAttribute> ();
string name = dllimport.EntryPoint ?? m.Name;
switch (name)
{
// known not to be present in ARM64
case "objc_msgSend_stret":
case "objc_msgSendSuper_stret":
// the linker normally removes them (IntPtr.Size optimization)
continue;
}
string path = dllimport.Value;
switch (path)
{
case "__Internal":
// load from executable
path = null;
break;
#if NET
case "QCall":
// Globalization hasn't been implemented yet: https://github.com/xamarin/xamarin-macios/issues/8906
if (name.StartsWith("GlobalizationNative_", StringComparison.Ordinal))
{
continue;
}
break;
case "libhostpolicy":
// There's no libhostpolicy library.
// https://github.com/dotnet/runtime/issues/38543
continue;
case "libSystem.Native":
path += ".dylib";
break;
#endif
case "libc":
// we still have some rogue/not-fully-qualified DllImport
path = "/usr/lib/libSystem.dylib";
break;
case "System.Native":
case "System.Security.Cryptography.Native.Apple":
case "System.Net.Security.Native":
if (MonoNativeConfig.LinkMode == MonoNativeLinkMode.None)
{
continue;
}
#if __IOS__
path = MonoNativeConfig.GetPInvokeLibraryName(MonoNativeFlavor.Compat, MonoNativeConfig.LinkMode);
#else
path = null;
#endif
break;
}
var lib = Dlfcn.dlopen(path, 0);
var h = Dlfcn.dlsym(lib, name);
if (h == IntPtr.Zero)
{
ReportError("Could not find the symbol '{0}' in {1}", name, path);
}
Dlfcn.dlclose(lib);
n++;
}
}
Assert.AreEqual(0, Errors, "{0} errors found in {1} symbol lookups{2}", Errors, n, Errors == 0 ? string.Empty : ":\n" + ErrorData.ToString() + "\n");
}
static DispatchData()
{
free = Marshal.ReadIntPtr(Dlfcn.dlsym(Libraries.LibC.Handle, "_dispatch_data_destructor_free"));
}
static DispatchData()
{
lib = Dlfcn.dlopen(Constants.libcLibrary, 0);
free = Marshal.ReadIntPtr(Dlfcn.dlsym(lib, "_dispatch_data_destructor_free"));
}
// we just want to confirm the symbol exists so `dlsym` can be disabled
protected void Check(Assembly a)
{
Errors = 0;
ErrorData.Clear();
int n = 0;
foreach (var t in a.GetTypes())
{
foreach (var m in t.GetMethods(BindingFlags.NonPublic | BindingFlags.Public | BindingFlags.Static))
{
if ((m.Attributes & MethodAttributes.PinvokeImpl) == 0)
{
continue;
}
var dllimport = m.GetCustomAttribute <DllImportAttribute> ();
string name = dllimport.EntryPoint ?? m.Name;
switch (name)
{
// known not to be present in ARM64
case "objc_msgSend_stret":
case "objc_msgSendSuper_stret":
// the linker normally removes them (IntPtr.Size optimization)
continue;
}
string path = dllimport.Value;
switch (path)
{
case "__Internal":
// load from executable
path = null;
break;
#if NET
case "libSystem.Globalization.Native":
// load from executable (like __Internal above since it's part of the static library)
path = null;
break;
case "libSystem.Native":
path += ".dylib";
break;
#endif
case "libc":
// we still have some rogue/not-fully-qualified DllImport
path = "/usr/lib/libSystem.dylib";
break;
case "System.Native":
case "System.Security.Cryptography.Native.Apple":
case "System.Net.Security.Native":
if (MonoNativeConfig.LinkMode == MonoNativeLinkMode.None)
{
continue;
}
#if __IOS__
path = MonoNativeConfig.GetPInvokeLibraryName(MonoNativeFlavor.Compat, MonoNativeConfig.LinkMode);
#else
path = null;
#endif
break;
}
var lib = Dlfcn.dlopen(path, 0);
var h = Dlfcn.dlsym(lib, name);
if (h == IntPtr.Zero)
{
ReportError("Could not find the symbol '{0}' in {1} for the P/Invoke {2}.{3} in {4}", name, path, t.FullName, m.Name, a.GetName().Name);
}
else if (path != null)
{
// Verify that the P/Invoke points to the right library.
Dl_info info = default(Dl_info);
var found = dladdr(h, out info);
if (found != 0)
{
// Resolve symlinks in both cases
var dllImportPath = ResolveLibrarySymlinks(path);
var foundLibrary = ResolveLibrarySymlinks(Marshal.PtrToStringAuto(info.dli_fname));
if (Skip(name, ref dllImportPath, ref foundLibrary))
{
// Skipped
}
else if (foundLibrary != dllImportPath)
{
ReportError($"Found the symbol '{name}' in the library '{foundLibrary}', but the P/Invoke {t.FullName}.{m.Name} in {a.GetName ().Name} claims it's in '{dllimport.Value}'.");
}
}
else
{
Console.WriteLine($"Unable to find the library for the symbol '{name}' claimed to be in {path} for the P/Invoke {t.FullName}.{m.Name} in {a.GetName ().Name} (rv: {found})");
}
}
Dlfcn.dlclose(lib);
n++;
}
}
Assert.AreEqual(0, Errors, "{0} errors found in {1} symbol lookups{2}", Errors, n, Errors == 0 ? string.Empty : ":\n" + ErrorData.ToString() + "\n");
}
