Rewrap some lines.

bramble-android/build.gradle

@@ -1,6 +1,7 @@
 import com.android.build.gradle.tasks.MergeResources
 
 apply plugin: 'com.android.library'
+apply plugin: 'checkstyle'
 apply plugin: 'witness'
 apply from: 'witness.gradle'
 

bramble-android/witness.gradle

@@ -1,5 +1,6 @@
 dependencyVerification {
     verify = [
+        'antlr:antlr:2.7.7:antlr-2.7.7.jar:88fbda4b912596b9f56e8e12e580cc954bacfb51776ecfddd3e18fc1cf56dc4c',
         'cglib:cglib:3.2.8:cglib-3.2.8.jar:3f64de999ecc5595dc84ca8ff0879d8a34c8623f9ef3c517a53ed59023fcb9db',
         'com.android.tools.analytics-library:protos:27.1.3:protos-27.1.3.jar:0d9e6cff60b318baac250b6f5bb076a8161103338bf2749cdf1db8a5a13a1f12',
         'com.android.tools.analytics-library:shared:27.1.3:shared-27.1.3.jar:10d2a51d8f89ff4ac849888e5a9c60b10e879c30d78545ec1da4d3df7bd56ae4',
@@ -51,13 +52,17 @@ dependencyVerification {
         'com.google.jimfs:jimfs:1.1:jimfs-1.1.jar:c4828e28d7c0a930af9387510b3bada7daa5c04d7c25a75c7b8b081f1c257ddd',
         'com.google.protobuf:protobuf-java:3.10.0:protobuf-java-3.10.0.jar:161d7d61a8cb3970891c299578702fd079646e032329d6c2cabf998d191437c9',
         'com.googlecode.json-simple:json-simple:1.1:json-simple-1.1.jar:2d9484f4c649f708f47f9a479465fc729770ee65617dca3011836602264f6439',
+        'com.puppycrawl.tools:checkstyle:8.27:checkstyle-8.27.jar:26c81958a112ebdfc5d7b40507bbfc8f15f606fea1e55ef5675609ddb41a6053',
         'com.squareup:javapoet:1.13.0:javapoet-1.13.0.jar:4c7517e848a71b36d069d12bb3bf46a70fd4cda3105d822b0ed2e19c00b69291',
         'com.squareup:javawriter:2.5.0:javawriter-2.5.0.jar:fcfb09fb0ea0aa97d3cfe7ea792398081348e468f126b3603cb3803f240197f0',
         'com.sun.activation:javax.activation:1.2.0:javax.activation-1.2.0.jar:993302b16cd7056f21e779cc577d175a810bb4900ef73cd8fbf2b50f928ba9ce',
         'com.sun.istack:istack-commons-runtime:3.0.7:istack-commons-runtime-3.0.7.jar:6443e10ba2e259fb821d9b6becf10db5316285fc30c53cec9d7b19a3877e7fdf',
         'com.sun.xml.fastinfoset:FastInfoset:1.2.15:FastInfoset-1.2.15.jar:785861db11ca1bd0d1956682b974ad73eb19cd3e01a4b3fa82d62eca97210aec',
+        'commons-beanutils:commons-beanutils:1.9.4:commons-beanutils-1.9.4.jar:7d938c81789028045c08c065e94be75fc280527620d5bd62b519d5838532368a',
         'commons-codec:commons-codec:1.10:commons-codec-1.10.jar:4241dfa94e711d435f29a4604a3e2de5c4aa3c165e23bd066be6fc1fc4309569',
+        'commons-collections:commons-collections:3.2.2:commons-collections-3.2.2.jar:eeeae917917144a68a741d4c0dff66aa5c5c5fd85593ff217bced3fc8ca783b8',
         'commons-logging:commons-logging:1.2:commons-logging-1.2.jar:daddea1ea0be0f56978ab3006b8ac92834afeefbd9b7e4e6316fca57df0fa636',
+        'info.picocli:picocli:4.1.1:picocli-4.1.1.jar:9238b6af4ded57dcfedf6f7dbcf2bdf334dae2f118ea2a0bd6d05066e63ee6fc',
         'it.unimi.dsi:fastutil:7.2.0:fastutil-7.2.0.jar:74fa208043740642f7e6eb09faba15965218ad2f50ce3020efb100136e4b591c',
         'javax.activation:javax.activation-api:1.2.0:javax.activation-api-1.2.0.jar:43fdef0b5b6ceb31b0424b208b930c74ab58fac2ceeb7b3f6fd3aeb8b5ca4393',
         'javax.annotation:jsr250-api:1.0:jsr250-api-1.0.jar:a1a922d0d9b6d183ed3800dfac01d1e1eb159f0e8c6f94736931c1def54a941f',
@@ -69,6 +74,8 @@ dependencyVerification {
         'net.ltgt.gradle.incap:incap:0.2:incap-0.2.jar:b625b9806b0f1e4bc7a2e3457119488de3cd57ea20feedd513db070a573a4ffd',
         'net.sf.jopt-simple:jopt-simple:4.9:jopt-simple-4.9.jar:26c5856e954b5f864db76f13b86919b59c6eecf9fd930b96baa8884626baf2f5',
         'net.sf.kxml:kxml2:2.3.0:kxml2-2.3.0.jar:f264dd9f79a1fde10ce5ecc53221eff24be4c9331c830b7d52f2f08a7b633de2',
+        'net.sf.saxon:Saxon-HE:9.9.1-5:Saxon-HE-9.9.1-5.jar:4b39a9e30d5b634b5e91db5f0c6937f176d4517543ababc9b5e01830b8c56620',
+        'org.antlr:antlr4-runtime:4.7.2:antlr4-runtime-4.7.2.jar:4c518b87d4bdff8b44cd8cbc1af816e944b62a3fe5b80b781501cf1f4759bbc4',
         'org.apache-extras.beanshell:bsh:2.0b6:bsh-2.0b6.jar:a17955976070c0573235ee662f2794a78082758b61accffce8d3f8aedcd91047',
         'org.apache.commons:commons-compress:1.12:commons-compress-1.12.jar:2c1542faf343185b7cab9c3d55c8ae5471d6d095d3887a4adefdbdf2984dc0b6',
         'org.apache.httpcomponents:httpclient:4.5.6:httpclient-4.5.6.jar:c03f813195e7a80e3608d0ddd8da80b21696a4c92a6a2298865bf149071551c7',

bramble-api/build.gradle

@@ -3,6 +3,7 @@ sourceCompatibility = 1.8
 targetCompatibility = 1.8
 
 apply plugin: 'ru.vyarus.animalsniffer'
+apply plugin: 'checkstyle'
 apply plugin: 'witness'
 apply from: 'witness.gradle'
 

bramble-api/src/main/java/org/briarproject/bramble/api/cleanup/CleanupHook.java

@@ -21,8 +21,9 @@ public interface CleanupHook {
 	 * <p>
 	 * The callee is not required to delete the messages, but the hook won't be
 	 * called again for these messages unless another cleanup timer is set (see
-	 * {@link DatabaseComponent#setCleanupTimerDuration(Transaction, MessageId, long)}
+	 * {@link DatabaseComponent#setCleanupTimerDuration(Transaction, MessageId,
-	 * and {@link DatabaseComponent#startCleanupTimer(Transaction, MessageId)}).
+	 * long)} and {@link DatabaseComponent#startCleanupTimer(Transaction,
+	 * MessageId)}).
 	 */
 	void deleteMessages(Transaction txn, GroupId g,
 			Collection<MessageId> messageIds) throws DbException;

bramble-api/src/main/java/org/briarproject/bramble/api/cleanup/CleanupManager.java

@@ -18,8 +18,8 @@ import org.briarproject.bramble.api.sync.MessageId;
  * {@link CleanupTimerStartedEvent CleanupTimerStartedEvents} broadcast by the
  * {@link DatabaseComponent}.
  * <p>
- * See {@link DatabaseComponent#setCleanupTimerDuration(Transaction, MessageId, long)},
+ * See {@link DatabaseComponent#setCleanupTimerDuration(Transaction, MessageId,
- * {@link DatabaseComponent#startCleanupTimer(Transaction, MessageId)},
+ * long)}, {@link DatabaseComponent#startCleanupTimer(Transaction, MessageId)},
  * {@link DatabaseComponent#stopCleanupTimer(Transaction, MessageId)}.
  */
 @NotNullByDefault

bramble-api/src/main/java/org/briarproject/bramble/api/system/TaskScheduler.java

@@ -35,8 +35,8 @@ public interface TaskScheduler {
 
 		/**
 		 * Cancels the task if it has not already started running. If the task
-		 * is {@link #scheduleWithFixedDelay(Runnable, Executor, long, long, TimeUnit) periodic},
+		 * is {@link #scheduleWithFixedDelay(Runnable, Executor, long, long,
-		 * all future executions of the task are cancelled.
+		 * TimeUnit) periodic}, all future executions of the task are cancelled.
 		 */
 		void cancel();
 	}

bramble-api/witness.gradle

@@ -1,15 +1,29 @@
 dependencyVerification {
     verify = [
+        'antlr:antlr:2.7.7:antlr-2.7.7.jar:88fbda4b912596b9f56e8e12e580cc954bacfb51776ecfddd3e18fc1cf56dc4c',
         'cglib:cglib:3.2.8:cglib-3.2.8.jar:3f64de999ecc5595dc84ca8ff0879d8a34c8623f9ef3c517a53ed59023fcb9db',
         'com.google.code.findbugs:annotations:3.0.1:annotations-3.0.1.jar:6b47ff0a6de0ce17cbedc3abb0828ca5bce3009d53ea47b3723ff023c4742f79',
         'com.google.code.findbugs:jsr305:3.0.2:jsr305-3.0.2.jar:766ad2a0783f2687962c8ad74ceecc38a28b9f72a2d085ee438b7813e928d0c7',
         'com.google.dagger:dagger:2.33:dagger-2.33.jar:d8798c5b8cf6b125234e33af5c6293bb9f2208ce29b57924c35b8c0be7b6bdcb',
+        'com.google.errorprone:error_prone_annotations:2.3.2:error_prone_annotations-2.3.2.jar:357cd6cfb067c969226c442451502aee13800a24e950fdfde77bcdb4565a668d',
+        'com.google.guava:failureaccess:1.0.1:failureaccess-1.0.1.jar:a171ee4c734dd2da837e4b16be9df4661afab72a41adaf31eb84dfdaf936ca26',
+        'com.google.guava:guava:28.1-jre:guava-28.1-jre.jar:30beb8b8527bd07c6e747e77f1a92122c2f29d57ce347461a4a55eb26e382da4',
+        'com.google.guava:listenablefuture:9999.0-empty-to-avoid-conflict-with-guava:listenablefuture-9999.0-empty-to-avoid-conflict-with-guava.jar:b372a037d4230aa57fbeffdef30fd6123f9c0c2db85d0aced00c91b974f33f99',
+        'com.google.j2objc:j2objc-annotations:1.3:j2objc-annotations-1.3.jar:21af30c92267bd6122c0e0b4d20cccb6641a37eaf956c6540ec471d584e64a7b',
+        'com.puppycrawl.tools:checkstyle:8.27:checkstyle-8.27.jar:26c81958a112ebdfc5d7b40507bbfc8f15f606fea1e55ef5675609ddb41a6053',
+        'commons-beanutils:commons-beanutils:1.9.4:commons-beanutils-1.9.4.jar:7d938c81789028045c08c065e94be75fc280527620d5bd62b519d5838532368a',
+        'commons-collections:commons-collections:3.2.2:commons-collections-3.2.2.jar:eeeae917917144a68a741d4c0dff66aa5c5c5fd85593ff217bced3fc8ca783b8',
+        'info.picocli:picocli:4.1.1:picocli-4.1.1.jar:9238b6af4ded57dcfedf6f7dbcf2bdf334dae2f118ea2a0bd6d05066e63ee6fc',
         'javax.inject:javax.inject:1:javax.inject-1.jar:91c77044a50c481636c32d916fd89c9118a72195390452c81065080f957de7ff',
         'junit:junit:4.13.2:junit-4.13.2.jar:8e495b634469d64fb8acfa3495a065cbacc8a0fff55ce1e31007be4c16dc57d3',
         'net.bytebuddy:byte-buddy:1.9.12:byte-buddy-1.9.12.jar:3688c3d434bebc3edc5516296a2ed0f47b65e451071b4afecad84f902f0efc11',
         'net.jcip:jcip-annotations:1.0:jcip-annotations-1.0.jar:be5805392060c71474bf6c9a67a099471274d30b83eef84bfc4e0889a4f1dcc0',
+        'net.sf.saxon:Saxon-HE:9.9.1-5:Saxon-HE-9.9.1-5.jar:4b39a9e30d5b634b5e91db5f0c6937f176d4517543ababc9b5e01830b8c56620',
+        'org.antlr:antlr4-runtime:4.7.2:antlr4-runtime-4.7.2.jar:4c518b87d4bdff8b44cd8cbc1af816e944b62a3fe5b80b781501cf1f4759bbc4',
         'org.apache-extras.beanshell:bsh:2.0b6:bsh-2.0b6.jar:a17955976070c0573235ee662f2794a78082758b61accffce8d3f8aedcd91047',
+        'org.checkerframework:checker-qual:2.8.1:checker-qual-2.8.1.jar:9103499008bcecd4e948da29b17864abb64304e15706444ae209d17ebe0575df',
         'org.codehaus.mojo.signature:java16:1.1:java16-1.1.signature:53799223a2c98dba2d0add810bed76315460df285c69e4f397ae6098f87dd619',
+        'org.codehaus.mojo:animal-sniffer-annotations:1.18:animal-sniffer-annotations-1.18.jar:47f05852b48ee9baefef80fa3d8cea60efa4753c0013121dd7fe5eef2e5c729d',
         'org.codehaus.mojo:animal-sniffer-ant-tasks:1.20:animal-sniffer-ant-tasks-1.20.jar:bb7d2498144118311d968bb08ff6fae3fc535fb1cb9cca8b8e9ea65b189422ac',
         'org.codehaus.mojo:animal-sniffer:1.20:animal-sniffer-1.20.jar:80c422523c38db91260c6d78e5ee4b012862ab61cc55020c9e243dd7b5c62249',
         'org.hamcrest:hamcrest-core:2.1:hamcrest-core-2.1.jar:e09109e54a289d88506b9bfec987ddd199f4217c9464132668351b9a4f00bee9',

bramble-core/build.gradle

@@ -3,6 +3,7 @@ sourceCompatibility = 1.8
 targetCompatibility = 1.8
 
 apply plugin: 'ru.vyarus.animalsniffer'
+apply plugin: 'checkstyle'
 apply plugin: 'idea'
 apply plugin: 'witness'
 apply from: 'witness.gradle'

bramble-core/src/main/java/org/briarproject/bramble/db/Database.java

@@ -845,8 +845,8 @@ interface Database<T> {
 	 * of the given message with respect to the given contact, using the latency
 	 * of the transport over which it was sent.
 	 */
-	void updateExpiryTimeAndEta(T txn, ContactId c, MessageId m, long maxLatency)
+	void updateExpiryTimeAndEta(T txn, ContactId c, MessageId m,
-			throws DbException;
+			long maxLatency) throws DbException;
 
 	/**
 	 * Stores the given transport keys, deleting any keys they have replaced.

bramble-core/src/main/java/org/briarproject/bramble/socks/SocksSocketFactory.java

@@ -22,7 +22,8 @@ class SocksSocketFactory extends SocketFactory {
 
 	@Override
 	public Socket createSocket() {
-		return new SocksSocket(proxy, connectToProxyTimeout, extraSocketTimeout);
+		return new SocksSocket(proxy, connectToProxyTimeout,
+				extraSocketTimeout);
 	}
 
 	@Override

bramble-core/witness.gradle

@@ -1,5 +1,6 @@
 dependencyVerification {
     verify = [
+        'antlr:antlr:2.7.7:antlr-2.7.7.jar:88fbda4b912596b9f56e8e12e580cc954bacfb51776ecfddd3e18fc1cf56dc4c',
         'cglib:cglib:3.2.8:cglib-3.2.8.jar:3f64de999ecc5595dc84ca8ff0879d8a34c8623f9ef3c517a53ed59023fcb9db',
         'com.google.code.findbugs:annotations:3.0.1:annotations-3.0.1.jar:6b47ff0a6de0ce17cbedc3abb0828ca5bce3009d53ea47b3723ff023c4742f79',
         'com.google.code.findbugs:jsr305:3.0.2:jsr305-3.0.2.jar:766ad2a0783f2687962c8ad74ceecc38a28b9f72a2d085ee438b7813e928d0c7',
@@ -8,14 +9,21 @@ dependencyVerification {
         'com.google.dagger:dagger-spi:2.33:dagger-spi-2.33.jar:e2dcab2221b8afb9556ef0a1c83b0bd5f42552e254322a257330f754cdbbb9d4',
         'com.google.dagger:dagger:2.33:dagger-2.33.jar:d8798c5b8cf6b125234e33af5c6293bb9f2208ce29b57924c35b8c0be7b6bdcb',
         'com.google.errorprone:error_prone_annotations:2.2.0:error_prone_annotations-2.2.0.jar:6ebd22ca1b9d8ec06d41de8d64e0596981d9607b42035f9ed374f9de271a481a',
+        'com.google.errorprone:error_prone_annotations:2.3.2:error_prone_annotations-2.3.2.jar:357cd6cfb067c969226c442451502aee13800a24e950fdfde77bcdb4565a668d',
         'com.google.errorprone:javac-shaded:9-dev-r4023-3:javac-shaded-9-dev-r4023-3.jar:65bfccf60986c47fbc17c9ebab0be626afc41741e0a6ec7109e0768817a36f30',
         'com.google.googlejavaformat:google-java-format:1.5:google-java-format-1.5.jar:aa19ad7850fb85178aa22f2fddb163b84d6ce4d0035872f30d4408195ca1144e',
         'com.google.guava:failureaccess:1.0.1:failureaccess-1.0.1.jar:a171ee4c734dd2da837e4b16be9df4661afab72a41adaf31eb84dfdaf936ca26',
         'com.google.guava:guava:27.1-jre:guava-27.1-jre.jar:4a5aa70cc968a4d137e599ad37553e5cfeed2265e8c193476d7119036c536fe7',
+        'com.google.guava:guava:28.1-jre:guava-28.1-jre.jar:30beb8b8527bd07c6e747e77f1a92122c2f29d57ce347461a4a55eb26e382da4',
         'com.google.guava:listenablefuture:9999.0-empty-to-avoid-conflict-with-guava:listenablefuture-9999.0-empty-to-avoid-conflict-with-guava.jar:b372a037d4230aa57fbeffdef30fd6123f9c0c2db85d0aced00c91b974f33f99',
         'com.google.j2objc:j2objc-annotations:1.1:j2objc-annotations-1.1.jar:2994a7eb78f2710bd3d3bfb639b2c94e219cedac0d4d084d516e78c16dddecf6',
+        'com.google.j2objc:j2objc-annotations:1.3:j2objc-annotations-1.3.jar:21af30c92267bd6122c0e0b4d20cccb6641a37eaf956c6540ec471d584e64a7b',
         'com.h2database:h2:1.4.192:h2-1.4.192.jar:225b22e9857235c46c93861410b60b8c81c10dc8985f4faf188985ba5445126c',
+        'com.puppycrawl.tools:checkstyle:8.27:checkstyle-8.27.jar:26c81958a112ebdfc5d7b40507bbfc8f15f606fea1e55ef5675609ddb41a6053',
         'com.squareup:javapoet:1.13.0:javapoet-1.13.0.jar:4c7517e848a71b36d069d12bb3bf46a70fd4cda3105d822b0ed2e19c00b69291',
+        'commons-beanutils:commons-beanutils:1.9.4:commons-beanutils-1.9.4.jar:7d938c81789028045c08c065e94be75fc280527620d5bd62b519d5838532368a',
+        'commons-collections:commons-collections:3.2.2:commons-collections-3.2.2.jar:eeeae917917144a68a741d4c0dff66aa5c5c5fd85593ff217bced3fc8ca783b8',
+        'info.picocli:picocli:4.1.1:picocli-4.1.1.jar:9238b6af4ded57dcfedf6f7dbcf2bdf334dae2f118ea2a0bd6d05066e63ee6fc',
         'javax.annotation:jsr250-api:1.0:jsr250-api-1.0.jar:a1a922d0d9b6d183ed3800dfac01d1e1eb159f0e8c6f94736931c1def54a941f',
         'javax.inject:javax.inject:1:javax.inject-1.jar:91c77044a50c481636c32d916fd89c9118a72195390452c81065080f957de7ff',
         'junit:junit:4.13.2:junit-4.13.2.jar:8e495b634469d64fb8acfa3495a065cbacc8a0fff55ce1e31007be4c16dc57d3',
@@ -24,14 +32,18 @@ dependencyVerification {
         'net.jcip:jcip-annotations:1.0:jcip-annotations-1.0.jar:be5805392060c71474bf6c9a67a099471274d30b83eef84bfc4e0889a4f1dcc0',
         'net.jodah:concurrentunit:0.4.2:concurrentunit-0.4.2.jar:5583078e1acf91734939e985bc9e7ee947b0e93a8eef679da6bb07bbeb47ced3',
         'net.ltgt.gradle.incap:incap:0.2:incap-0.2.jar:b625b9806b0f1e4bc7a2e3457119488de3cd57ea20feedd513db070a573a4ffd',
+        'net.sf.saxon:Saxon-HE:9.9.1-5:Saxon-HE-9.9.1-5.jar:4b39a9e30d5b634b5e91db5f0c6937f176d4517543ababc9b5e01830b8c56620',
+        'org.antlr:antlr4-runtime:4.7.2:antlr4-runtime-4.7.2.jar:4c518b87d4bdff8b44cd8cbc1af816e944b62a3fe5b80b781501cf1f4759bbc4',
         'org.apache-extras.beanshell:bsh:2.0b6:bsh-2.0b6.jar:a17955976070c0573235ee662f2794a78082758b61accffce8d3f8aedcd91047',
         'org.bitlet:weupnp:0.1.4:weupnp-0.1.4.jar:88df7e6504929d00bdb832863761385c68ab92af945b04f0770b126270a444fb',
         'org.bouncycastle:bcprov-jdk15on:1.69:bcprov-jdk15on-1.69.jar:e469bd39f936999f256002631003ff022a22951da9d5bd9789c7abfa9763a292',
         'org.briarproject:jtorctl:0.3:jtorctl-0.3.jar:f2939238a097898998432effe93b0334d97a787972ab3a91a8973a1d309fc864',
         'org.checkerframework:checker-compat-qual:2.5.3:checker-compat-qual-2.5.3.jar:d76b9afea61c7c082908023f0cbc1427fab9abd2df915c8b8a3e7a509bccbc6d',
         'org.checkerframework:checker-qual:2.5.2:checker-qual-2.5.2.jar:64b02691c8b9d4e7700f8ee2e742dce7ea2c6e81e662b7522c9ee3bf568c040a',
+        'org.checkerframework:checker-qual:2.8.1:checker-qual-2.8.1.jar:9103499008bcecd4e948da29b17864abb64304e15706444ae209d17ebe0575df',
         'org.codehaus.mojo.signature:java16:1.1:java16-1.1.signature:53799223a2c98dba2d0add810bed76315460df285c69e4f397ae6098f87dd619',
         'org.codehaus.mojo:animal-sniffer-annotations:1.17:animal-sniffer-annotations-1.17.jar:92654f493ecfec52082e76354f0ebf87648dc3d5cec2e3c3cdb947c016747a53',
+        'org.codehaus.mojo:animal-sniffer-annotations:1.18:animal-sniffer-annotations-1.18.jar:47f05852b48ee9baefef80fa3d8cea60efa4753c0013121dd7fe5eef2e5c729d',
         'org.codehaus.mojo:animal-sniffer-ant-tasks:1.20:animal-sniffer-ant-tasks-1.20.jar:bb7d2498144118311d968bb08ff6fae3fc535fb1cb9cca8b8e9ea65b189422ac',
         'org.codehaus.mojo:animal-sniffer:1.20:animal-sniffer-1.20.jar:80c422523c38db91260c6d78e5ee4b012862ab61cc55020c9e243dd7b5c62249',
         'org.hamcrest:hamcrest-core:2.1:hamcrest-core-2.1.jar:e09109e54a289d88506b9bfec987ddd199f4217c9464132668351b9a4f00bee9',

bramble-java/build.gradle

@@ -2,6 +2,7 @@ apply plugin: 'java-library'
 sourceCompatibility = 1.8
 targetCompatibility = 1.8
 
+apply plugin: 'checkstyle'
 apply plugin: 'idea'
 apply plugin: 'witness'
 apply from: 'witness.gradle'

bramble-java/src/main/java/org/briarproject/bramble/plugin/modem/CountryCodes.java

@@ -81,33 +81,36 @@ class CountryCodes {
 		new Country("GA", "Gabonese Republic", "241", "00", ""),
 		new Country("GB", "United Kingdom", "44", "00", "0"),
 		new Country("GD", "Grenada", "1", "011", "4"),
-		new Country("GE", "Georgia", "995", "8**10", "8"),
+			new Country("GE", "Georgia", "995", "8**10", "8"),
-		new Country("GF", "French Guiana", "594", "00", ""),
+			new Country("GF", "French Guiana", "594", "00", ""),
-		new Country("GH", "Ghana", "233", "00", ""),
+			new Country("GH", "Ghana", "233", "00", ""),
-		new Country("GI", "Gibraltar", "350", "00", ""),
+			new Country("GI", "Gibraltar", "350", "00", ""),
-		new Country("GL", "Greenland", "299", "00", ""),
+			new Country("GL", "Greenland", "299", "00", ""),
-		new Country("GM", "Gambia", "220", "00", ""),
+			new Country("GM", "Gambia", "220", "00", ""),
-		new Country("GN", "Guinea", "224", "00", "0"),
+			new Country("GN", "Guinea", "224", "00", "0"),
-		new Country("GP", "Guadeloupe", "590", "00", ""),
+			new Country("GP", "Guadeloupe", "590", "00", ""),
-		new Country("GQ", "Equatorial Guinea", "240", "00", ""),
+			new Country("GQ", "Equatorial Guinea", "240", "00", ""),
-		new Country("GR", "Greece", "30", "00", ""),
+			new Country("GR", "Greece", "30", "00", ""),
-		new Country("GS", "South Georgia and the South Sandwich Islands", "995", "8**10", "8"),
+			new Country("GS", "South Georgia and the South Sandwich Islands",
-		new Country("GT", "Guatemala", "502", "00", ""),
+					"995", "8**10", "8"),
-		new Country("GU", "Guam", "1", "011", "1"),
+			new Country("GT", "Guatemala", "502", "00", ""),
-		new Country("GW", "Guinea-Bissau", "245", "00", ""),
+			new Country("GU", "Guam", "1", "011", "1"),
-		new Country("GY", "Guyana", "592", "001", "0"),
+			new Country("GW", "Guinea-Bissau", "245", "00", ""),
-		new Country("HK", "Hong Kong", "852", "001", ""),
+			new Country("GY", "Guyana", "592", "001", "0"),
-		new Country("HM", "Heard Island and McDonald Islands", "692", "00", "0"),
+			new Country("HK", "Hong Kong", "852", "001", ""),
-		new Country("HN", "Honduras", "504", "00", "0"),
+			new Country("HM", "Heard Island and McDonald Islands",
-		new Country("HR", "Croatia", "385", "00", "0"),
+					"692", "00", "0"),
-		new Country("HT", "Haiti", "509", "00", "0"),
+			new Country("HN", "Honduras", "504", "00", "0"),
-		new Country("HU", "Hungary", "36", "00", "06"),
+			new Country("HR", "Croatia", "385", "00", "0"),
-		new Country("ID", "Indonesia", "62", "001", "0"),
+			new Country("HT", "Haiti", "509", "00", "0"),
-		new Country("IE", "Ireland", "353", "00", "0"),
+			new Country("HU", "Hungary", "36", "00", "06"),
-		new Country("IL", "Israel", "972", "00", "0"),
+			new Country("ID", "Indonesia", "62", "001", "0"),
-		new Country("IN", "India", "91", "00", "0"),
+			new Country("IE", "Ireland", "353", "00", "0"),
-		new Country("IO", "British Indian Ocean Territory", "246", "00", ""),
+			new Country("IL", "Israel", "972", "00", "0"),
-		new Country("IQ", "Iraq", "964", "00", "0"),
+			new Country("IN", "India", "91", "00", "0"),
+			new Country("IO", "British Indian Ocean Territory", "246", "00",
+					""),
+			new Country("IQ", "Iraq", "964", "00", "0"),
 		new Country("IR", "Iran", "98", "00", "0"),
 		new Country("IS", "Iceland", "354", "00", "0"),
 		new Country("IT", "Italy", "39", "00", ""),

bramble-java/src/main/java/org/briarproject/bramble/plugin/modem/SerialPortImpl.java

@@ -28,7 +28,8 @@ class SerialPortImpl implements SerialPort {
 	@Override
 	public void closePort() throws IOException {
 		try {
-			if (!port.closePort()) throw new IOException("Failed to close port");
+			if (!port.closePort())
+				throw new IOException("Failed to close port");
 		} catch (SerialPortException e) {
 			throw new IOException(e);
 		}

bramble-java/witness.gradle

@@ -1,5 +1,6 @@
 dependencyVerification {
     verify = [
+        'antlr:antlr:2.7.7:antlr-2.7.7.jar:88fbda4b912596b9f56e8e12e580cc954bacfb51776ecfddd3e18fc1cf56dc4c',
         'cglib:cglib:3.2.8:cglib-3.2.8.jar:3f64de999ecc5595dc84ca8ff0879d8a34c8623f9ef3c517a53ed59023fcb9db',
         'com.google.code.findbugs:annotations:3.0.1:annotations-3.0.1.jar:6b47ff0a6de0ce17cbedc3abb0828ca5bce3009d53ea47b3723ff023c4742f79',
         'com.google.code.findbugs:jsr305:3.0.2:jsr305-3.0.2.jar:766ad2a0783f2687962c8ad74ceecc38a28b9f72a2d085ee438b7813e928d0c7',
@@ -8,13 +9,20 @@ dependencyVerification {
         'com.google.dagger:dagger-spi:2.33:dagger-spi-2.33.jar:e2dcab2221b8afb9556ef0a1c83b0bd5f42552e254322a257330f754cdbbb9d4',
         'com.google.dagger:dagger:2.33:dagger-2.33.jar:d8798c5b8cf6b125234e33af5c6293bb9f2208ce29b57924c35b8c0be7b6bdcb',
         'com.google.errorprone:error_prone_annotations:2.2.0:error_prone_annotations-2.2.0.jar:6ebd22ca1b9d8ec06d41de8d64e0596981d9607b42035f9ed374f9de271a481a',
+        'com.google.errorprone:error_prone_annotations:2.3.2:error_prone_annotations-2.3.2.jar:357cd6cfb067c969226c442451502aee13800a24e950fdfde77bcdb4565a668d',
         'com.google.errorprone:javac-shaded:9-dev-r4023-3:javac-shaded-9-dev-r4023-3.jar:65bfccf60986c47fbc17c9ebab0be626afc41741e0a6ec7109e0768817a36f30',
         'com.google.googlejavaformat:google-java-format:1.5:google-java-format-1.5.jar:aa19ad7850fb85178aa22f2fddb163b84d6ce4d0035872f30d4408195ca1144e',
         'com.google.guava:failureaccess:1.0.1:failureaccess-1.0.1.jar:a171ee4c734dd2da837e4b16be9df4661afab72a41adaf31eb84dfdaf936ca26',
         'com.google.guava:guava:27.1-jre:guava-27.1-jre.jar:4a5aa70cc968a4d137e599ad37553e5cfeed2265e8c193476d7119036c536fe7',
+        'com.google.guava:guava:28.1-jre:guava-28.1-jre.jar:30beb8b8527bd07c6e747e77f1a92122c2f29d57ce347461a4a55eb26e382da4',
         'com.google.guava:listenablefuture:9999.0-empty-to-avoid-conflict-with-guava:listenablefuture-9999.0-empty-to-avoid-conflict-with-guava.jar:b372a037d4230aa57fbeffdef30fd6123f9c0c2db85d0aced00c91b974f33f99',
         'com.google.j2objc:j2objc-annotations:1.1:j2objc-annotations-1.1.jar:2994a7eb78f2710bd3d3bfb639b2c94e219cedac0d4d084d516e78c16dddecf6',
+        'com.google.j2objc:j2objc-annotations:1.3:j2objc-annotations-1.3.jar:21af30c92267bd6122c0e0b4d20cccb6641a37eaf956c6540ec471d584e64a7b',
+        'com.puppycrawl.tools:checkstyle:8.27:checkstyle-8.27.jar:26c81958a112ebdfc5d7b40507bbfc8f15f606fea1e55ef5675609ddb41a6053',
         'com.squareup:javapoet:1.13.0:javapoet-1.13.0.jar:4c7517e848a71b36d069d12bb3bf46a70fd4cda3105d822b0ed2e19c00b69291',
+        'commons-beanutils:commons-beanutils:1.9.4:commons-beanutils-1.9.4.jar:7d938c81789028045c08c065e94be75fc280527620d5bd62b519d5838532368a',
+        'commons-collections:commons-collections:3.2.2:commons-collections-3.2.2.jar:eeeae917917144a68a741d4c0dff66aa5c5c5fd85593ff217bced3fc8ca783b8',
+        'info.picocli:picocli:4.1.1:picocli-4.1.1.jar:9238b6af4ded57dcfedf6f7dbcf2bdf334dae2f118ea2a0bd6d05066e63ee6fc',
         'javax.annotation:jsr250-api:1.0:jsr250-api-1.0.jar:a1a922d0d9b6d183ed3800dfac01d1e1eb159f0e8c6f94736931c1def54a941f',
         'javax.inject:javax.inject:1:javax.inject-1.jar:91c77044a50c481636c32d916fd89c9118a72195390452c81065080f957de7ff',
         'junit:junit:4.13.2:junit-4.13.2.jar:8e495b634469d64fb8acfa3495a065cbacc8a0fff55ce1e31007be4c16dc57d3',
@@ -23,12 +31,16 @@ dependencyVerification {
         'net.java.dev.jna:jna:4.5.2:jna-4.5.2.jar:0c8eb7acf67261656d79005191debaba3b6bf5dd60a43735a245429381dbecff',
         'net.jcip:jcip-annotations:1.0:jcip-annotations-1.0.jar:be5805392060c71474bf6c9a67a099471274d30b83eef84bfc4e0889a4f1dcc0',
         'net.ltgt.gradle.incap:incap:0.2:incap-0.2.jar:b625b9806b0f1e4bc7a2e3457119488de3cd57ea20feedd513db070a573a4ffd',
+        'net.sf.saxon:Saxon-HE:9.9.1-5:Saxon-HE-9.9.1-5.jar:4b39a9e30d5b634b5e91db5f0c6937f176d4517543ababc9b5e01830b8c56620',
+        'org.antlr:antlr4-runtime:4.7.2:antlr4-runtime-4.7.2.jar:4c518b87d4bdff8b44cd8cbc1af816e944b62a3fe5b80b781501cf1f4759bbc4',
         'org.apache-extras.beanshell:bsh:2.0b6:bsh-2.0b6.jar:a17955976070c0573235ee662f2794a78082758b61accffce8d3f8aedcd91047',
         'org.briarproject:obfs4proxy:0.0.12-dev-40245c4a:obfs4proxy-0.0.12-dev-40245c4a.zip:172029e7058b3a83ac93ac4991a44bf76e16ce8d46f558f5836d57da3cb3a766',
         'org.briarproject:tor:0.3.5.15:tor-0.3.5.15.jar:2ff5b5a3b5eaa97d699629ad24ba9584b3199d0ffdb1ea7d8a02de3016b80e7a',
         'org.checkerframework:checker-compat-qual:2.5.3:checker-compat-qual-2.5.3.jar:d76b9afea61c7c082908023f0cbc1427fab9abd2df915c8b8a3e7a509bccbc6d',
         'org.checkerframework:checker-qual:2.5.2:checker-qual-2.5.2.jar:64b02691c8b9d4e7700f8ee2e742dce7ea2c6e81e662b7522c9ee3bf568c040a',
+        'org.checkerframework:checker-qual:2.8.1:checker-qual-2.8.1.jar:9103499008bcecd4e948da29b17864abb64304e15706444ae209d17ebe0575df',
         'org.codehaus.mojo:animal-sniffer-annotations:1.17:animal-sniffer-annotations-1.17.jar:92654f493ecfec52082e76354f0ebf87648dc3d5cec2e3c3cdb947c016747a53',
+        'org.codehaus.mojo:animal-sniffer-annotations:1.18:animal-sniffer-annotations-1.18.jar:47f05852b48ee9baefef80fa3d8cea60efa4753c0013121dd7fe5eef2e5c729d',
         'org.hamcrest:hamcrest-core:2.1:hamcrest-core-2.1.jar:e09109e54a289d88506b9bfec987ddd199f4217c9464132668351b9a4f00bee9',
         'org.hamcrest:hamcrest-library:2.1:hamcrest-library-2.1.jar:b7e2b6895b3b679f0e47b6380fda391b225e9b78505db9d8bdde8d3cc8d52a21',
         'org.hamcrest:hamcrest:2.1:hamcrest-2.1.jar:ba93b2e3a562322ba432f0a1b53addcc55cb188253319a020ed77f824e692050',

briar-android/build.gradle

@@ -1,4 +1,5 @@
 apply plugin: 'com.android.application'
+apply plugin: 'checkstyle'
 apply plugin: 'witness'
 apply from: 'witness.gradle'
 

briar-android/witness.gradle

@@ -67,6 +67,7 @@ dependencyVerification {
         'androidx.versionedparcelable:versionedparcelable:1.1.0:versionedparcelable-1.1.0.aar:9a1d77140ac222b7866b5054ee7d159bc1800987ed2d46dd6afdd145abb710c1',
         'androidx.viewpager2:viewpager2:1.0.0:viewpager2-1.0.0.aar:e95c0031d4cc247cd48196c6287e58d2cee54d9c79b85afea7c90920330275af',
         'androidx.viewpager:viewpager:1.0.0:viewpager-1.0.0.aar:147af4e14a1984010d8f155e5e19d781f03c1d70dfed02a8e0d18428b8fc8682',
+        'antlr:antlr:2.7.7:antlr-2.7.7.jar:88fbda4b912596b9f56e8e12e580cc954bacfb51776ecfddd3e18fc1cf56dc4c',
         'backport-util-concurrent:backport-util-concurrent:3.1:backport-util-concurrent-3.1.jar:f5759b7fcdfc83a525a036deedcbd32e5b536b625ebc282426f16ca137eb5902',
         'cglib:cglib:3.2.8:cglib-3.2.8.jar:3f64de999ecc5595dc84ca8ff0879d8a34c8623f9ef3c517a53ed59023fcb9db',
         'classworlds:classworlds:1.1-alpha-2:classworlds-1.1-alpha-2.jar:2bf4e59f3acd106fea6145a9a88fe8956509f8b9c0fdd11eb96fee757269e3f3',
@@ -137,6 +138,7 @@ dependencyVerification {
         'com.googlecode.json-simple:json-simple:1.1:json-simple-1.1.jar:2d9484f4c649f708f47f9a479465fc729770ee65617dca3011836602264f6439',
         'com.ibm.icu:icu4j:53.1:icu4j-53.1.jar:e37a4467bac5cdeb02c5c4b8e5063d2f4e67b69e3c7df6d6b610f13185572bab',
         'com.jraska:falcon:2.1.1:falcon-2.1.1.aar:827f06556b7fa599f29a48a5277df39ca3dce5080d4ea6f9ea1f9c7b6b78bb7a',
+        'com.puppycrawl.tools:checkstyle:8.27:checkstyle-8.27.jar:26c81958a112ebdfc5d7b40507bbfc8f15f606fea1e55ef5675609ddb41a6053',
         'com.squareup:javapoet:1.13.0:javapoet-1.13.0.jar:4c7517e848a71b36d069d12bb3bf46a70fd4cda3105d822b0ed2e19c00b69291',
         'com.squareup:javawriter:2.1.1:javawriter-2.1.1.jar:f699823d0081f69cbb676c1845ea222e0ada79bc88a53e5d22d8bd02d328f57e',
         'com.squareup:javawriter:2.5.0:javawriter-2.5.0.jar:fcfb09fb0ea0aa97d3cfe7ea792398081348e468f126b3603cb3803f240197f0',
@@ -145,11 +147,14 @@ dependencyVerification {
         'com.sun.xml.fastinfoset:FastInfoset:1.2.15:FastInfoset-1.2.15.jar:785861db11ca1bd0d1956682b974ad73eb19cd3e01a4b3fa82d62eca97210aec',
         'com.vanniktech:emoji-google:0.6.0:emoji-google-0.6.0.aar:029d6a954cebfe3f0a5bac0c9539a054fa7db2e1272d006a8f0e850f3794d44b',
         'com.vanniktech:emoji:0.6.0:emoji-0.6.0.aar:a5fcde58902305c004f03c6dc2241e718400ac4162226079791d87fac83ef639',
+        'commons-beanutils:commons-beanutils:1.9.4:commons-beanutils-1.9.4.jar:7d938c81789028045c08c065e94be75fc280527620d5bd62b519d5838532368a',
         'commons-codec:commons-codec:1.10:commons-codec-1.10.jar:4241dfa94e711d435f29a4604a3e2de5c4aa3c165e23bd066be6fc1fc4309569',
+        'commons-collections:commons-collections:3.2.2:commons-collections-3.2.2.jar:eeeae917917144a68a741d4c0dff66aa5c5c5fd85593ff217bced3fc8ca783b8',
         'commons-logging:commons-logging:1.2:commons-logging-1.2.jar:daddea1ea0be0f56978ab3006b8ac92834afeefbd9b7e4e6316fca57df0fa636',
         'de.hdodenhof:circleimageview:3.1.0:circleimageview-3.1.0.aar:8e9965b54072ee159074a55df216e17d5a622c94ce915ef311b1a1f32660c7fb',
         'info.guardianproject.panic:panic:1.0:panic-1.0.jar:35116ab95212e67f94577faf67b88c11a6b21cbf9178b3f5b51d3dff45203ffd',
         'info.guardianproject.trustedintents:trustedintents:0.2:trustedintents-0.2.jar:6221456d8821a8d974c2acf86306900237cf6afaaa94a4c9c44e161350f80f3e',
+        'info.picocli:picocli:4.1.1:picocli-4.1.1.jar:9238b6af4ded57dcfedf6f7dbcf2bdf334dae2f118ea2a0bd6d05066e63ee6fc',
         'it.unimi.dsi:fastutil:7.2.0:fastutil-7.2.0.jar:74fa208043740642f7e6eb09faba15965218ad2f50ce3020efb100136e4b591c',
         'javax.activation:javax.activation-api:1.2.0:javax.activation-api-1.2.0.jar:43fdef0b5b6ceb31b0424b208b930c74ab58fac2ceeb7b3f6fd3aeb8b5ca4393',
         'javax.annotation:javax.annotation-api:1.3.2:javax.annotation-api-1.3.2.jar:e04ba5195bcd555dc95650f7cc614d151e4bcd52d29a10b8aa2197f3ab89ab9b',
@@ -165,6 +170,8 @@ dependencyVerification {
         'net.ltgt.gradle.incap:incap:0.2:incap-0.2.jar:b625b9806b0f1e4bc7a2e3457119488de3cd57ea20feedd513db070a573a4ffd',
         'net.sf.jopt-simple:jopt-simple:4.9:jopt-simple-4.9.jar:26c5856e954b5f864db76f13b86919b59c6eecf9fd930b96baa8884626baf2f5',
         'net.sf.kxml:kxml2:2.3.0:kxml2-2.3.0.jar:f264dd9f79a1fde10ce5ecc53221eff24be4c9331c830b7d52f2f08a7b633de2',
+        'net.sf.saxon:Saxon-HE:9.9.1-5:Saxon-HE-9.9.1-5.jar:4b39a9e30d5b634b5e91db5f0c6937f176d4517543ababc9b5e01830b8c56620',
+        'org.antlr:antlr4-runtime:4.7.2:antlr4-runtime-4.7.2.jar:4c518b87d4bdff8b44cd8cbc1af816e944b62a3fe5b80b781501cf1f4759bbc4',
         'org.apache-extras.beanshell:bsh:2.0b6:bsh-2.0b6.jar:a17955976070c0573235ee662f2794a78082758b61accffce8d3f8aedcd91047',
         'org.apache.ant:ant-launcher:1.8.0:ant-launcher-1.8.0.jar:da9fd92eacdf63daf0be52eb71accc10ff7943a85d7aac9ea96cf7e03ee3d3cc',
         'org.apache.ant:ant:1.8.0:ant-1.8.0.jar:0251dbb938740ace07a53675113eee753ba389db65aebc814b175af50321620e',

briar-api/build.gradle

@@ -3,6 +3,7 @@ sourceCompatibility = 1.8
 targetCompatibility = 1.8
 
 apply plugin: 'ru.vyarus.animalsniffer'
+apply plugin: 'checkstyle'
 apply plugin: 'witness'
 apply from: 'witness.gradle'
 

briar-api/src/main/java/org/briarproject/briar/api/blog/BlogPostHeader.java

@@ -1,11 +1,11 @@
 package org.briarproject.briar.api.blog;
 
 import org.briarproject.bramble.api.identity.Author;
-import org.briarproject.briar.api.identity.AuthorInfo;
 import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.sync.GroupId;
 import org.briarproject.bramble.api.sync.MessageId;
 import org.briarproject.briar.api.client.PostHeader;
+import org.briarproject.briar.api.identity.AuthorInfo;
 
 import javax.annotation.Nullable;
 import javax.annotation.concurrent.Immutable;
@@ -21,7 +21,8 @@ public class BlogPostHeader extends PostHeader {
 
 	public BlogPostHeader(MessageType type, GroupId groupId, MessageId id,
 			@Nullable MessageId parentId, long timestamp, long timeReceived,
-			Author author, AuthorInfo authorInfo, boolean rssFeed, boolean read) {
+			Author author, AuthorInfo authorInfo, boolean rssFeed,
+			boolean read) {
 		super(id, parentId, timestamp, author, authorInfo, read);
 		this.type = type;
 		this.groupId = groupId;

briar-api/src/main/java/org/briarproject/briar/api/client/PostHeader.java

@@ -1,10 +1,10 @@
 package org.briarproject.briar.api.client;
 
 import org.briarproject.bramble.api.identity.Author;
-import org.briarproject.briar.api.identity.AuthorInfo;
-import org.briarproject.briar.api.identity.AuthorInfo.Status;
 import org.briarproject.bramble.api.nullsafety.NotNullByDefault;
 import org.briarproject.bramble.api.sync.MessageId;
+import org.briarproject.briar.api.identity.AuthorInfo;
+import org.briarproject.briar.api.identity.AuthorInfo.Status;
 
 import javax.annotation.Nullable;
 import javax.annotation.concurrent.Immutable;
@@ -22,7 +22,8 @@ public abstract class PostHeader {
 	private final boolean read;
 
 	public PostHeader(MessageId id, @Nullable MessageId parentId,
-			long timestamp, Author author, AuthorInfo authorInfo, boolean read) {
+			long timestamp, Author author, AuthorInfo authorInfo,
+			boolean read) {
 		this.id = id;
 		this.parentId = parentId;
 		this.timestamp = timestamp;

briar-api/src/main/java/org/briarproject/briar/api/forum/event/ForumInvitationRequestReceivedEvent.java

@@ -13,8 +13,8 @@ import javax.annotation.concurrent.Immutable;
 public class ForumInvitationRequestReceivedEvent extends
 		ConversationMessageReceivedEvent<ConversationRequest<Forum>> {
 
-	public ForumInvitationRequestReceivedEvent(ConversationRequest<Forum> request,
+	public ForumInvitationRequestReceivedEvent(
-			ContactId contactId) {
+			ConversationRequest<Forum> request, ContactId contactId) {
 		super(request, contactId);
 	}
 

briar-api/src/main/java/org/briarproject/briar/api/messaging/PrivateMessage.java

@@ -51,8 +51,8 @@ public class PrivateMessage {
 
 	/**
 	 * Constructor for private messages in the
-	 * {@link PrivateMessageFormat#TEXT_IMAGES_AUTO_DELETE TEXT_IMAGES_AUTO_DELETE}
+	 * {@link PrivateMessageFormat#TEXT_IMAGES_AUTO_DELETE
-	 * format.
+	 * TEXT_IMAGES_AUTO_DELETE} format.
 	 */
 	public PrivateMessage(Message message, boolean hasText,
 			List<AttachmentHeader> headers, long autoDeleteTimer) {

briar-api/src/main/java/org/briarproject/briar/api/messaging/PrivateMessageFactory.java

@@ -30,9 +30,9 @@ public interface PrivateMessageFactory {
 
 	/**
 	 * Creates a private message in the
-	 * {@link PrivateMessageFormat#TEXT_IMAGES_AUTO_DELETE TEXT_IMAGES_AUTO_DELETE}
+	 * {@link PrivateMessageFormat#TEXT_IMAGES_AUTO_DELETE
-	 * format. This format requires the contact to support client version 0.3
+	 * TEXT_IMAGES_AUTO_DELETE} format. This format requires the contact to
-	 * or higher.
+	 * support client version 0.3 or higher.
 	 */
 	PrivateMessage createPrivateMessage(GroupId groupId, long timestamp,
 			@Nullable String text, List<AttachmentHeader> headers,

briar-api/witness.gradle

@@ -1,7 +1,22 @@
 dependencyVerification {
     verify = [
+        'antlr:antlr:2.7.7:antlr-2.7.7.jar:88fbda4b912596b9f56e8e12e580cc954bacfb51776ecfddd3e18fc1cf56dc4c',
+        'com.google.code.findbugs:jsr305:3.0.2:jsr305-3.0.2.jar:766ad2a0783f2687962c8ad74ceecc38a28b9f72a2d085ee438b7813e928d0c7',
+        'com.google.errorprone:error_prone_annotations:2.3.2:error_prone_annotations-2.3.2.jar:357cd6cfb067c969226c442451502aee13800a24e950fdfde77bcdb4565a668d',
+        'com.google.guava:failureaccess:1.0.1:failureaccess-1.0.1.jar:a171ee4c734dd2da837e4b16be9df4661afab72a41adaf31eb84dfdaf936ca26',
+        'com.google.guava:guava:28.1-jre:guava-28.1-jre.jar:30beb8b8527bd07c6e747e77f1a92122c2f29d57ce347461a4a55eb26e382da4',
+        'com.google.guava:listenablefuture:9999.0-empty-to-avoid-conflict-with-guava:listenablefuture-9999.0-empty-to-avoid-conflict-with-guava.jar:b372a037d4230aa57fbeffdef30fd6123f9c0c2db85d0aced00c91b974f33f99',
+        'com.google.j2objc:j2objc-annotations:1.3:j2objc-annotations-1.3.jar:21af30c92267bd6122c0e0b4d20cccb6641a37eaf956c6540ec471d584e64a7b',
+        'com.puppycrawl.tools:checkstyle:8.27:checkstyle-8.27.jar:26c81958a112ebdfc5d7b40507bbfc8f15f606fea1e55ef5675609ddb41a6053',
+        'commons-beanutils:commons-beanutils:1.9.4:commons-beanutils-1.9.4.jar:7d938c81789028045c08c065e94be75fc280527620d5bd62b519d5838532368a',
+        'commons-collections:commons-collections:3.2.2:commons-collections-3.2.2.jar:eeeae917917144a68a741d4c0dff66aa5c5c5fd85593ff217bced3fc8ca783b8',
+        'info.picocli:picocli:4.1.1:picocli-4.1.1.jar:9238b6af4ded57dcfedf6f7dbcf2bdf334dae2f118ea2a0bd6d05066e63ee6fc',
         'junit:junit:4.13.2:junit-4.13.2.jar:8e495b634469d64fb8acfa3495a065cbacc8a0fff55ce1e31007be4c16dc57d3',
+        'net.sf.saxon:Saxon-HE:9.9.1-5:Saxon-HE-9.9.1-5.jar:4b39a9e30d5b634b5e91db5f0c6937f176d4517543ababc9b5e01830b8c56620',
+        'org.antlr:antlr4-runtime:4.7.2:antlr4-runtime-4.7.2.jar:4c518b87d4bdff8b44cd8cbc1af816e944b62a3fe5b80b781501cf1f4759bbc4',
+        'org.checkerframework:checker-qual:2.8.1:checker-qual-2.8.1.jar:9103499008bcecd4e948da29b17864abb64304e15706444ae209d17ebe0575df',
         'org.codehaus.mojo.signature:java16:1.1:java16-1.1.signature:53799223a2c98dba2d0add810bed76315460df285c69e4f397ae6098f87dd619',
+        'org.codehaus.mojo:animal-sniffer-annotations:1.18:animal-sniffer-annotations-1.18.jar:47f05852b48ee9baefef80fa3d8cea60efa4753c0013121dd7fe5eef2e5c729d',
         'org.codehaus.mojo:animal-sniffer-ant-tasks:1.20:animal-sniffer-ant-tasks-1.20.jar:bb7d2498144118311d968bb08ff6fae3fc535fb1cb9cca8b8e9ea65b189422ac',
         'org.codehaus.mojo:animal-sniffer:1.20:animal-sniffer-1.20.jar:80c422523c38db91260c6d78e5ee4b012862ab61cc55020c9e243dd7b5c62249',
         'org.hamcrest:hamcrest-core:1.3:hamcrest-core-1.3.jar:66fdef91e9739348df7a096aa384a5685f4e875584cce89386a7a47251c4d8e9',

briar-core/build.gradle

@@ -3,6 +3,7 @@ sourceCompatibility = 1.8
 targetCompatibility = 1.8
 
 apply plugin: 'ru.vyarus.animalsniffer'
+apply plugin: 'checkstyle'
 apply plugin: 'idea'
 apply plugin: 'witness'
 apply from: 'witness.gradle'

briar-core/src/main/java/org/briarproject/briar/introduction/IntroducerProtocolEngine.java

@@ -653,8 +653,8 @@ class IntroducerProtocolEngine
 
 	/**
 	 * Returns a timestamp for an invisible outgoing message. The timestamp is
-	 * later than the {@link #getSessionTimestamp(IntroducerSession, PeerSession)
+	 * later than the {@link #getSessionTimestamp(IntroducerSession,
-	 * session timestamp}.
+	 * PeerSession) session timestamp}.
 	 */
 	private long getTimestampForInvisibleMessage(IntroducerSession s,
 			PeerSession p) {

briar-core/witness.gradle

@@ -1,5 +1,6 @@
 dependencyVerification {
     verify = [
+        'antlr:antlr:2.7.7:antlr-2.7.7.jar:88fbda4b912596b9f56e8e12e580cc954bacfb51776ecfddd3e18fc1cf56dc4c',
         'cglib:cglib:3.2.8:cglib-3.2.8.jar:3f64de999ecc5595dc84ca8ff0879d8a34c8623f9ef3c517a53ed59023fcb9db',
         'com.google.code.findbugs:annotations:3.0.1:annotations-3.0.1.jar:6b47ff0a6de0ce17cbedc3abb0828ca5bce3009d53ea47b3723ff023c4742f79',
         'com.google.code.findbugs:jsr305:3.0.2:jsr305-3.0.2.jar:766ad2a0783f2687962c8ad74ceecc38a28b9f72a2d085ee438b7813e928d0c7',
@@ -8,17 +9,24 @@ dependencyVerification {
         'com.google.dagger:dagger-spi:2.33:dagger-spi-2.33.jar:e2dcab2221b8afb9556ef0a1c83b0bd5f42552e254322a257330f754cdbbb9d4',
         'com.google.dagger:dagger:2.33:dagger-2.33.jar:d8798c5b8cf6b125234e33af5c6293bb9f2208ce29b57924c35b8c0be7b6bdcb',
         'com.google.errorprone:error_prone_annotations:2.2.0:error_prone_annotations-2.2.0.jar:6ebd22ca1b9d8ec06d41de8d64e0596981d9607b42035f9ed374f9de271a481a',
+        'com.google.errorprone:error_prone_annotations:2.3.2:error_prone_annotations-2.3.2.jar:357cd6cfb067c969226c442451502aee13800a24e950fdfde77bcdb4565a668d',
         'com.google.errorprone:javac-shaded:9-dev-r4023-3:javac-shaded-9-dev-r4023-3.jar:65bfccf60986c47fbc17c9ebab0be626afc41741e0a6ec7109e0768817a36f30',
         'com.google.googlejavaformat:google-java-format:1.5:google-java-format-1.5.jar:aa19ad7850fb85178aa22f2fddb163b84d6ce4d0035872f30d4408195ca1144e',
         'com.google.guava:failureaccess:1.0.1:failureaccess-1.0.1.jar:a171ee4c734dd2da837e4b16be9df4661afab72a41adaf31eb84dfdaf936ca26',
         'com.google.guava:guava:27.1-jre:guava-27.1-jre.jar:4a5aa70cc968a4d137e599ad37553e5cfeed2265e8c193476d7119036c536fe7',
+        'com.google.guava:guava:28.1-jre:guava-28.1-jre.jar:30beb8b8527bd07c6e747e77f1a92122c2f29d57ce347461a4a55eb26e382da4',
         'com.google.guava:listenablefuture:9999.0-empty-to-avoid-conflict-with-guava:listenablefuture-9999.0-empty-to-avoid-conflict-with-guava.jar:b372a037d4230aa57fbeffdef30fd6123f9c0c2db85d0aced00c91b974f33f99',
         'com.google.j2objc:j2objc-annotations:1.1:j2objc-annotations-1.1.jar:2994a7eb78f2710bd3d3bfb639b2c94e219cedac0d4d084d516e78c16dddecf6',
+        'com.google.j2objc:j2objc-annotations:1.3:j2objc-annotations-1.3.jar:21af30c92267bd6122c0e0b4d20cccb6641a37eaf956c6540ec471d584e64a7b',
+        'com.puppycrawl.tools:checkstyle:8.27:checkstyle-8.27.jar:26c81958a112ebdfc5d7b40507bbfc8f15f606fea1e55ef5675609ddb41a6053',
         'com.rometools:rome-utils:1.15.0:rome-utils-1.15.0.jar:2aaa1e95e0630ba5f4c183201f5ca6af8cecebcbf3494e7d11b903c9d1277cb8',
         'com.rometools:rome:1.15.0:rome-1.15.0.jar:51cbcedae56ee0c32f25f3a367a6a9dadeef0f591d2f23d03486aec272e4d3f9',
         'com.squareup.okhttp3:okhttp:3.12.13:okhttp-3.12.13.jar:508234e024ef7e270ab1a6d5b356f5b98e786511239ca986d684fd1e2cf7bc82',
         'com.squareup.okio:okio:1.15.0:okio-1.15.0.jar:693fa319a7e8843300602b204023b7674f106ebcb577f2dd5807212b66118bd2',
         'com.squareup:javapoet:1.13.0:javapoet-1.13.0.jar:4c7517e848a71b36d069d12bb3bf46a70fd4cda3105d822b0ed2e19c00b69291',
+        'commons-beanutils:commons-beanutils:1.9.4:commons-beanutils-1.9.4.jar:7d938c81789028045c08c065e94be75fc280527620d5bd62b519d5838532368a',
+        'commons-collections:commons-collections:3.2.2:commons-collections-3.2.2.jar:eeeae917917144a68a741d4c0dff66aa5c5c5fd85593ff217bced3fc8ca783b8',
+        'info.picocli:picocli:4.1.1:picocli-4.1.1.jar:9238b6af4ded57dcfedf6f7dbcf2bdf334dae2f118ea2a0bd6d05066e63ee6fc',
         'javax.annotation:jsr250-api:1.0:jsr250-api-1.0.jar:a1a922d0d9b6d183ed3800dfac01d1e1eb159f0e8c6f94736931c1def54a941f',
         'javax.inject:javax.inject:1:javax.inject-1.jar:91c77044a50c481636c32d916fd89c9118a72195390452c81065080f957de7ff',
         'junit:junit:4.13.2:junit-4.13.2.jar:8e495b634469d64fb8acfa3495a065cbacc8a0fff55ce1e31007be4c16dc57d3',
@@ -26,11 +34,15 @@ dependencyVerification {
         'net.jcip:jcip-annotations:1.0:jcip-annotations-1.0.jar:be5805392060c71474bf6c9a67a099471274d30b83eef84bfc4e0889a4f1dcc0',
         'net.jodah:concurrentunit:0.4.2:concurrentunit-0.4.2.jar:5583078e1acf91734939e985bc9e7ee947b0e93a8eef679da6bb07bbeb47ced3',
         'net.ltgt.gradle.incap:incap:0.2:incap-0.2.jar:b625b9806b0f1e4bc7a2e3457119488de3cd57ea20feedd513db070a573a4ffd',
+        'net.sf.saxon:Saxon-HE:9.9.1-5:Saxon-HE-9.9.1-5.jar:4b39a9e30d5b634b5e91db5f0c6937f176d4517543ababc9b5e01830b8c56620',
+        'org.antlr:antlr4-runtime:4.7.2:antlr4-runtime-4.7.2.jar:4c518b87d4bdff8b44cd8cbc1af816e944b62a3fe5b80b781501cf1f4759bbc4',
         'org.apache-extras.beanshell:bsh:2.0b6:bsh-2.0b6.jar:a17955976070c0573235ee662f2794a78082758b61accffce8d3f8aedcd91047',
         'org.checkerframework:checker-compat-qual:2.5.3:checker-compat-qual-2.5.3.jar:d76b9afea61c7c082908023f0cbc1427fab9abd2df915c8b8a3e7a509bccbc6d',
         'org.checkerframework:checker-qual:2.5.2:checker-qual-2.5.2.jar:64b02691c8b9d4e7700f8ee2e742dce7ea2c6e81e662b7522c9ee3bf568c040a',
+        'org.checkerframework:checker-qual:2.8.1:checker-qual-2.8.1.jar:9103499008bcecd4e948da29b17864abb64304e15706444ae209d17ebe0575df',
         'org.codehaus.mojo.signature:java16:1.1:java16-1.1.signature:53799223a2c98dba2d0add810bed76315460df285c69e4f397ae6098f87dd619',
         'org.codehaus.mojo:animal-sniffer-annotations:1.17:animal-sniffer-annotations-1.17.jar:92654f493ecfec52082e76354f0ebf87648dc3d5cec2e3c3cdb947c016747a53',
+        'org.codehaus.mojo:animal-sniffer-annotations:1.18:animal-sniffer-annotations-1.18.jar:47f05852b48ee9baefef80fa3d8cea60efa4753c0013121dd7fe5eef2e5c729d',
         'org.codehaus.mojo:animal-sniffer-ant-tasks:1.20:animal-sniffer-ant-tasks-1.20.jar:bb7d2498144118311d968bb08ff6fae3fc535fb1cb9cca8b8e9ea65b189422ac',
         'org.codehaus.mojo:animal-sniffer:1.20:animal-sniffer-1.20.jar:80c422523c38db91260c6d78e5ee4b012862ab61cc55020c9e243dd7b5c62249',
         'org.hamcrest:hamcrest-core:2.1:hamcrest-core-2.1.jar:e09109e54a289d88506b9bfec987ddd199f4217c9464132668351b9a4f00bee9',

config/checkstyle/checkstyle.xml

@@ -0,0 +1,21 @@
+<!DOCTYPE module PUBLIC
+	"-//Checkstyle//DTD Checkstyle Configuration 1.3//EN"
+	"https://checkstyle.org/dtds/configuration_1_3.dtd">
+<module name="Checker">
+	<property name="tabWidth" value="4" />
+	<property name="charset" value="UTF-8" />
+	<module name="LineLength">
+		<property name="fileExtensions" value="java" />
+		<property name="max" value="100" />
+		<property name="ignorePattern"
+			value="^package.*|^import.*|a href|href|http://|https://|ftp://" />
+	</module>
+	<module name="TreeWalker">
+		<module name="RegexpSinglelineJava">
+			<property name="format" value="^\t* +\t*\S" />
+			<property name="message"
+				value="Line has leading space characters; indentation should be performed with tabs only." />
+			<property name="ignoreComments" value="true" />
+		</module>
+	</module>
+</module>