Out of band data URI message handling module

Core/XMPPFramework.h

@@ -105,6 +105,7 @@
 #import "TURNSocket.h"
 #import "XMPPIQ+XEP_0066.h"
 #import "XMPPMessage+XEP_0066.h"
+#import "XMPPOutOfBandResourceMessaging.h"
 #import "XMPPRegistration.h"
 #import "NSDate+XMPPDateTimeProfiles.h"
 #import "XMPPDateTimeProfiles.h"

Extensions/XEP-0066/XMPPOutOfBandResourceMessaging.h

@@ -0,0 +1,28 @@
+#import "XMPPModule.h"
+
+@class XMPPMessage;
+
+NS_ASSUME_NONNULL_BEGIN
+
+/// A module that handles incoming XEP-0066 Out of Band Data URI messages.
+@interface XMPPOutOfBandResourceMessaging : XMPPModule
+
+/// @brief The set of URL schemes handled by the module.
+/// @discussion If set to @c nil (the default), URL filtering is disabled.
+@property (copy, nullable) NSSet<NSString *> *relevantURLSchemes;
+
+@end
+
+/// A protocol defining @c XMPPOutOfBandResourceMessagingDelegate module delegate API.
+@protocol XMPPOutOfBandResourceMessagingDelegate <NSObject>
+
+@optional
+
+/// Notifies the delegate that a message containing a relevant XEP-0066 Out of Band Data URI has been received in the stream.
+- (void)xmppOutOfBandResourceMessaging:(XMPPOutOfBandResourceMessaging *)xmppOutOfBandResourceMessaging
+    didReceiveOutOfBandResourceMessage:(XMPPMessage *)message
+NS_SWIFT_NAME(xmppOutOfBandResourceMessaging(_:didReceiveOutOfBandResourceMessage:));
+
+@end
+
+NS_ASSUME_NONNULL_END

Extensions/XEP-0066/XMPPOutOfBandResourceMessaging.m

@@ -0,0 +1,76 @@
+#import "XMPPOutOfBandResourceMessaging.h"
+#import "XMPPMessage+XEP_0066.h"
+#import "XMPPStream.h"
+#import "XMPPLogging.h"
+
+// Log levels: off, error, warn, info, verbose
+// Log flags: trace
+#if DEBUG
+static const int xmppLogLevel = XMPP_LOG_LEVEL_WARN; // | XMPP_LOG_FLAG_TRACE;
+#else
+static const int xmppLogLevel = XMPP_LOG_LEVEL_WARN;
+#endif
+
+@implementation XMPPOutOfBandResourceMessaging
+
+@synthesize relevantURLSchemes = _relevantURLSchemes;
+
+- (NSSet<NSString *> *)relevantURLSchemes
+{
+    __block NSSet *result;
+    dispatch_block_t block = ^{
+        result = _relevantURLSchemes;
+    };
+
+    if (dispatch_get_specific(moduleQueueTag))
+        block();
+    else
+        dispatch_sync(moduleQueue, block);
+
+    return result;
+}
+
+- (void)setRelevantURLSchemes:(NSSet<NSString *> *)relevantURLSchemes
+{
+    NSSet *newValue = [relevantURLSchemes copy];
+    dispatch_block_t block = ^{
+        _relevantURLSchemes = newValue;
+    };
+
+    if (dispatch_get_specific(moduleQueueTag))
+        block();
+    else
+        dispatch_async(moduleQueue, block);
+}
+
+- (void)didActivate
+{
+    XMPPLogTrace();
+}
+
+- (void)willDeactivate
+{
+    XMPPLogTrace();
+}
+
+- (void)xmppStream:(XMPPStream *)sender didReceiveMessage:(XMPPMessage *)message
+{
+    XMPPLogTrace();
+
+    if (![message hasOutOfBandData]) {
+        return;
+    }
+
+    NSString *resourceURIString = [message outOfBandURI];
+    if (self.relevantURLSchemes) {
+        NSURL *resourceURL = [NSURL URLWithString:resourceURIString];
+        if (!resourceURL.scheme || ![self.relevantURLSchemes containsObject:resourceURL.scheme]) {
+            return;
+        }
+    }
+
+    XMPPLogInfo(@"Received out of band resource message");
+    [multicastDelegate xmppOutOfBandResourceMessaging:self didReceiveOutOfBandResourceMessage:message];
+}
+
+@end

XMPPFramework.xcodeproj/project.pbxproj

@@ -923,6 +923,12 @@
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+		DD855F911F74F2B000E12330 /* XMPPOutOfBandResourceMessaging.h in Headers */ = {isa = PBXBuildFile; fileRef = DD855F8F1F74F2B000E12330 /* XMPPOutOfBandResourceMessaging.h */; settings = {ATTRIBUTES = (Public, ); }; };
+		DD855F921F74F2B000E12330 /* XMPPOutOfBandResourceMessaging.h in Headers */ = {isa = PBXBuildFile; fileRef = DD855F8F1F74F2B000E12330 /* XMPPOutOfBandResourceMessaging.h */; settings = {ATTRIBUTES = (Public, ); }; };
+		DD855F931F74F2B000E12330 /* XMPPOutOfBandResourceMessaging.h in Headers */ = {isa = PBXBuildFile; fileRef = DD855F8F1F74F2B000E12330 /* XMPPOutOfBandResourceMessaging.h */; settings = {ATTRIBUTES = (Public, ); }; };
+		DD855F941F74F2B000E12330 /* XMPPOutOfBandResourceMessaging.m in Sources */ = {isa = PBXBuildFile; fileRef = DD855F901F74F2B000E12330 /* XMPPOutOfBandResourceMessaging.m */; };
+		DD855F951F74F2B000E12330 /* XMPPOutOfBandResourceMessaging.m in Sources */ = {isa = PBXBuildFile; fileRef = DD855F901F74F2B000E12330 /* XMPPOutOfBandResourceMessaging.m */; };
+		DD855F961F74F2B000E12330 /* XMPPOutOfBandResourceMessaging.m in Sources */ = {isa = PBXBuildFile; fileRef = DD855F901F74F2B000E12330 /* XMPPOutOfBandResourceMessaging.m */; };
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@@ -1514,6 +1520,8 @@
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+		DD855F8F1F74F2B000E12330 /* XMPPOutOfBandResourceMessaging.h */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.h; path = XMPPOutOfBandResourceMessaging.h; sourceTree = "<group>"; };
+		DD855F901F74F2B000E12330 /* XMPPOutOfBandResourceMessaging.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; path = XMPPOutOfBandResourceMessaging.m; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
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@@ -2107,6 +2115,8 @@
 				D9DCD1BF1E6250930010D1C7 /* XMPPIQ+XEP_0066.m */,
 				D9DCD1C01E6250930010D1C7 /* XMPPMessage+XEP_0066.h */,
 				D9DCD1C11E6250930010D1C7 /* XMPPMessage+XEP_0066.m */,
+				DD855F8F1F74F2B000E12330 /* XMPPOutOfBandResourceMessaging.h */,
+				DD855F901F74F2B000E12330 /* XMPPOutOfBandResourceMessaging.m */,
 			);
 			path = "XEP-0066";
 			sourceTree = "<group>";
@@ -2552,6 +2562,7 @@
 				0D44BB4A1E537105000930E0 /* XMPPDeprecatedDigestAuthentication.h in Headers */,
 				D9DCD3261E6250930010D1C7 /* NSXMLElement+XEP_0335.h in Headers */,
 				D9DCD2A41E6250930010D1C7 /* XMPPMessage+XEP0045.h in Headers */,
+				DD855F911F74F2B000E12330 /* XMPPOutOfBandResourceMessaging.h in Headers */,
 				D9DCD2EE1E6250930010D1C7 /* XMPPMessageArchiving_Message_CoreDataObject.h in Headers */,
 				D9DCD2791E6250930010D1C7 /* XMPPRosterMemoryStoragePrivate.h in Headers */,
 				D9DCD3241E6250930010D1C7 /* XMPPMessage+XEP_0334.h in Headers */,
@@ -2713,6 +2724,7 @@
 				D9DCD4A01E6256D90010D1C7 /* XMPPDeprecatedDigestAuthentication.h in Headers */,
 				D9DCD4A11E6256D90010D1C7 /* NSXMLElement+XEP_0335.h in Headers */,
 				D9DCD4A21E6256D90010D1C7 /* XMPPMessage+XEP0045.h in Headers */,
+				DD855F921F74F2B000E12330 /* XMPPOutOfBandResourceMessaging.h in Headers */,
 				D9DCD4A31E6256D90010D1C7 /* XMPPMessageArchiving_Message_CoreDataObject.h in Headers */,
 				D9DCD4A41E6256D90010D1C7 /* XMPPRosterMemoryStoragePrivate.h in Headers */,
 				D9DCD4A51E6256D90010D1C7 /* XMPPMessage+XEP_0334.h in Headers */,
@@ -2874,6 +2886,7 @@
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 				D9DCD6041E6258CF0010D1C7 /* NSXMLElement+XEP_0335.h in Headers */,
 				D9DCD6051E6258CF0010D1C7 /* XMPPMessage+XEP0045.h in Headers */,
+				DD855F931F74F2B000E12330 /* XMPPOutOfBandResourceMessaging.h in Headers */,
 				D9DCD6061E6258CF0010D1C7 /* XMPPMessageArchiving_Message_CoreDataObject.h in Headers */,
 				D9DCD6071E6258CF0010D1C7 /* XMPPRosterMemoryStoragePrivate.h in Headers */,
 				D9DCD6081E6258CF0010D1C7 /* XMPPMessage+XEP_0334.h in Headers */,
@@ -3455,6 +3468,7 @@
 				D9DCD2531E6250930010D1C7 /* XMPPIncomingFileTransfer.m in Sources */,
 				0D44BB531E537105000930E0 /* XMPPSCRAMSHA1Authentication.m in Sources */,
 				D9DCD32B1E6250930010D1C7 /* XMPPIQ+XEP_0357.m in Sources */,
+				DD855F941F74F2B000E12330 /* XMPPOutOfBandResourceMessaging.m in Sources */,
 				D9DCD2F71E6250930010D1C7 /* XMPPvCardAvatarModule.m in Sources */,
 				D9DCD26B1E6250930010D1C7 /* XMPPReconnect.m in Sources */,
 				D9DCD2B91E6250930010D1C7 /* XMPPvCardTempAdr.m in Sources */,
@@ -3607,6 +3621,7 @@
 				D9DCD45B1E6256D90010D1C7 /* XMPPIncomingFileTransfer.m in Sources */,
 				D9DCD45C1E6256D90010D1C7 /* XMPPSCRAMSHA1Authentication.m in Sources */,
 				D9DCD45D1E6256D90010D1C7 /* XMPPIQ+XEP_0357.m in Sources */,
+				DD855F951F74F2B000E12330 /* XMPPOutOfBandResourceMessaging.m in Sources */,
 				D9DCD45E1E6256D90010D1C7 /* XMPPvCardAvatarModule.m in Sources */,
 				D9DCD45F1E6256D90010D1C7 /* XMPPReconnect.m in Sources */,
 				D9DCD4601E6256D90010D1C7 /* XMPPvCardTempAdr.m in Sources */,
@@ -3759,6 +3774,7 @@
 				D9DCD5BE1E6258CF0010D1C7 /* XMPPIncomingFileTransfer.m in Sources */,
 				D9DCD5BF1E6258CF0010D1C7 /* XMPPSCRAMSHA1Authentication.m in Sources */,
 				D9DCD5C01E6258CF0010D1C7 /* XMPPIQ+XEP_0357.m in Sources */,
+				DD855F961F74F2B000E12330 /* XMPPOutOfBandResourceMessaging.m in Sources */,
 				D9DCD5C11E6258CF0010D1C7 /* XMPPvCardAvatarModule.m in Sources */,
 				D9DCD5C21E6258CF0010D1C7 /* XMPPReconnect.m in Sources */,
 				D9DCD5C31E6258CF0010D1C7 /* XMPPvCardTempAdr.m in Sources */,

Xcode/Testing-Carthage/XMPPFrameworkTests.xcodeproj/project.pbxproj

@@ -61,6 +61,9 @@
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+		DD4003E81F75283D0078D144 /* XMPPOutOfBandResourceMessagingTests.m in Sources */ = {isa = PBXBuildFile; fileRef = DDB40BAA1F75255100B82A93 /* XMPPOutOfBandResourceMessagingTests.m */; };
+		DD4003E91F75283E0078D144 /* XMPPOutOfBandResourceMessagingTests.m in Sources */ = {isa = PBXBuildFile; fileRef = DDB40BAA1F75255100B82A93 /* XMPPOutOfBandResourceMessagingTests.m */; };
+		DDB40BAB1F75255100B82A93 /* XMPPOutOfBandResourceMessagingTests.m in Sources */ = {isa = PBXBuildFile; fileRef = DDB40BAA1F75255100B82A93 /* XMPPOutOfBandResourceMessagingTests.m */; };
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@@ -133,6 +136,7 @@
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+		DDB40BAA1F75255100B82A93 /* XMPPOutOfBandResourceMessagingTests.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; path = XMPPOutOfBandResourceMessagingTests.m; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -202,6 +206,7 @@
 				D973A0791D2F18040096F3ED /* XMPPStorageHintTests.m */,
 				D973A07A1D2F18040096F3ED /* XMPPURITests.m */,
 				D973A07B1D2F18040096F3ED /* XMPPvCardTests.m */,
+				DDB40BAA1F75255100B82A93 /* XMPPOutOfBandResourceMessagingTests.m */,
 				63F50D971C60208200CA0201 /* Info.plist */,
 			);
 			name = XMPPFrameworkTests;
@@ -390,6 +395,7 @@
 				D99C5E0D1D99C48100FB068A /* OMEMOModuleTests.m in Sources */,
 				D973A0861D2F18040096F3ED /* XMPPURITests.m in Sources */,
 				D973A07F1D2F18040096F3ED /* XMPPMessageArchiveManagementTests.m in Sources */,
+				DDB40BAB1F75255100B82A93 /* XMPPOutOfBandResourceMessagingTests.m in Sources */,
 				D973A07E1D2F18040096F3ED /* XMPPHTTPFileUploadTests.m in Sources */,
 				D973A0821D2F18040096F3ED /* XMPPPushTests.swift in Sources */,
 				D9E35E701D90B894002E7CF7 /* OMEMOElementTests.m in Sources */,
@@ -414,6 +420,7 @@
 				D9DCD3DC1E6255E10010D1C7 /* OMEMOModuleTests.m in Sources */,
 				D9DCD3DD1E6255E10010D1C7 /* XMPPURITests.m in Sources */,
 				D9DCD3DE1E6255E10010D1C7 /* XMPPMessageArchiveManagementTests.m in Sources */,
+				DD4003E81F75283D0078D144 /* XMPPOutOfBandResourceMessagingTests.m in Sources */,
 				D9DCD3DF1E6255E10010D1C7 /* XMPPHTTPFileUploadTests.m in Sources */,
 				D9DCD3E01E6255E10010D1C7 /* XMPPPushTests.swift in Sources */,
 				D9DCD3E11E6255E10010D1C7 /* OMEMOElementTests.m in Sources */,
@@ -438,6 +445,7 @@
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 				D9DCD7061E625C560010D1C7 /* XMPPURITests.m in Sources */,
 				D9DCD7071E625C560010D1C7 /* XMPPMessageArchiveManagementTests.m in Sources */,
+				DD4003E91F75283E0078D144 /* XMPPOutOfBandResourceMessagingTests.m in Sources */,
 				D9DCD7081E625C560010D1C7 /* XMPPHTTPFileUploadTests.m in Sources */,
 				D9DCD7091E625C560010D1C7 /* XMPPPushTests.swift in Sources */,
 				D9DCD70A1E625C560010D1C7 /* OMEMOElementTests.m in Sources */,

Xcode/Testing-Shared/XMPPOutOfBandResourceMessagingTests.m

@@ -0,0 +1,65 @@
+#import <XCTest/XCTest.h>
+#import "XMPPMockStream.h"
+
+@interface XMPPOutOfBandResourceMessagingTests : XCTestCase <XMPPOutOfBandResourceMessagingDelegate>
+
+@property (strong, nonatomic) XMPPMockStream *mockStream;
+@property (strong, nonatomic) XMPPOutOfBandResourceMessaging *outOfBandResourceMessaging;
+@property (strong, nonatomic) XCTestExpectation *delegateCallbackExpectation;
+
+@end
+
+@implementation XMPPOutOfBandResourceMessagingTests
+
+- (void)setUp
+{
+    [super setUp];
+    self.mockStream = [[XMPPMockStream alloc] init];
+    self.outOfBandResourceMessaging = [[XMPPOutOfBandResourceMessaging alloc] init];
+    [self.outOfBandResourceMessaging addDelegate:self delegateQueue:dispatch_get_main_queue()];
+    [self.outOfBandResourceMessaging activate:self.mockStream];
+}
+
+- (void)testDelegateCallback
+{
+    self.delegateCallbackExpectation = [self expectationWithDescription:@"Delegate callback received"];
+
+    [self fakeOutOfBandResourceMessage];
+
+    [self waitForExpectationsWithTimeout:1 handler:nil];
+}
+
+- (void)testURLSchemeFiltering
+{
+    self.outOfBandResourceMessaging.relevantURLSchemes = [NSSet setWithObject:@"ftp"];
+    self.delegateCallbackExpectation = [self expectationWithDescription:@"Delegate callback not received"];
+    self.delegateCallbackExpectation.inverted = YES;
+
+    [self fakeOutOfBandResourceMessage];
+
+    [self waitForExpectationsWithTimeout:1 handler:nil];
+}
+
+- (void)xmppOutOfBandResourceMessaging:(XMPPOutOfBandResourceMessaging *)xmppOutOfBandResourceMessaging didReceiveOutOfBandResourceMessage:(XMPPMessage *)message
+{
+    if ([[message body] isEqualToString:@"Yeah, but do you have a license to Jabber?"]) {
+        [self.delegateCallbackExpectation fulfill];
+    }
+}
+
+- (void)fakeOutOfBandResourceMessage
+{
+    [self.mockStream fakeMessageResponse:
+     [[XMPPMessage alloc] initWithXMLString:
+      @"<message from='[email protected]/work'"
+      @"           to='[email protected]/home'>"
+      @"  <body>Yeah, but do you have a license to Jabber?</body>"
+      @"  <x xmlns='jabber:x:oob'>"
+      @"    <url>http://www.jabber.org/images/psa-license.jpg</url>"
+      @"    <desc>A license to Jabber!</desc>"
+      @"  </x>"
+      @"</message>"
+                                      error:nil]];
+}
+
+@end

Xcode/Testing-iOS/XMPPFrameworkTests.xcodeproj/project.pbxproj

@@ -25,6 +25,7 @@
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+		DDB40BA81F750B0800B82A93 /* XMPPOutOfBandResourceMessagingTests.m in Sources */ = {isa = PBXBuildFile; fileRef = DDB40BA71F750B0800B82A93 /* XMPPOutOfBandResourceMessagingTests.m */; };
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@@ -55,6 +56,7 @@
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 		DD1E732B1ED86B7D009B529B /* XMPPPubSubTests.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = XMPPPubSubTests.m; path = "../../Testing-Shared/XMPPPubSubTests.m"; sourceTree = "<group>"; };
+		DDB40BA71F750B0800B82A93 /* XMPPOutOfBandResourceMessagingTests.m */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.c.objc; name = XMPPOutOfBandResourceMessagingTests.m; path = "../../Testing-Shared/XMPPOutOfBandResourceMessagingTests.m"; sourceTree = "<group>"; };
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 /* Begin PBXFrameworksBuildPhase section */
@@ -108,6 +110,7 @@
 				D973A07A1D2F18040096F3ED /* XMPPURITests.m */,
 				D973A07B1D2F18040096F3ED /* XMPPvCardTests.m */,
 				DD1E732B1ED86B7D009B529B /* XMPPPubSubTests.m */,
+				DDB40BA71F750B0800B82A93 /* XMPPOutOfBandResourceMessagingTests.m */,
 				63F50D971C60208200CA0201 /* Info.plist */,
 				D973A06E1D2F18030096F3ED /* XMPPFrameworkTests-Bridging-Header.h */,
 			);
@@ -250,6 +253,7 @@
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 			buildActionMask = 2147483647;
 			files = (
+				DDB40BA81F750B0800B82A93 /* XMPPOutOfBandResourceMessagingTests.m in Sources */,
 				D973A07C1D2F18040096F3ED /* CapabilitiesHashingTest.m in Sources */,
 				D973A0811D2F18040096F3ED /* XMPPMUCLightTests.m in Sources */,
 				D973A07D1D2F18040096F3ED /* EncodeDecodeTest.m in Sources */,