Document building of macOS headless jars and fix included native binaries on macOS

briar-headless/README.md

@@ -9,7 +9,7 @@ or to develop your own user interface for it.
 
 The REST API peer comes as a `jar` file
 and needs a Java Runtime Environment (JRE) that supports at least Java 8.
-It currently works only on GNU/Linux operating systems and on Windows.
+It currently works on GNU/Linux operating systems, on Windows and on macOS.
 
 To build the `jar` file, you need to specify the combination of architecture and platform:
 
@@ -17,6 +17,8 @@ To build the `jar` file, you need to specify the combination of architecture and
     $ ./gradlew --configure-on-demand briar-headless:aarch64LinuxJar
     $ ./gradlew --configure-on-demand briar-headless:armhfLinuxJar
     $ ./gradlew --configure-on-demand briar-headless:windowsJar
+    $ ./gradlew --configure-on-demand briar-headless:x86MacOsJar
+    $ ./gradlew --configure-on-demand briar-headless:aarch64MacOsJar
 
 You can start the peer (and its API server) like this:
 
@@ -51,6 +53,11 @@ The answer is an empty JSON array, because you don't have any contacts.
 Note that the HTTP request sets an `Authorization` header with the bearer token.
 A missing or wrong token will result in a `401` response.
 
+To run on macOS you will need to sign the native tor binaries included in the
+jar file. To do so, extract the files in `aarch64` or `x86_64` depending on your
+system architecture, sign them using `codesign` and replace the original files
+in the jar files with the signed ones.
+
 ## REST API
 
 ### Listing all contacts

briar-headless/build.gradle

@@ -96,7 +96,7 @@ void jarFactory(Jar jarTask, os, architecture, configuration) {
 	}
 			{
 				it.duplicatesStrategy(DuplicatesStrategy.EXCLUDE)
-				if (os == "linux") {
+				if (os == "linux" || os == "macos") {
 					String[] architectures = [
 							"aarch64",
 							"armhf",
@@ -107,6 +107,7 @@ void jarFactory(Jar jarTask, os, architecture, configuration) {
 							exclude arch + "/obfs4proxy"
 							exclude arch + "/tor"
 							exclude arch + "/snowflake"
+							exclude arch + "/libevent-*.dylib"
 						}
 					}
 				}

briar-headless/src/main/java/org/briarproject/briar/headless/Main.kt

@@ -28,7 +28,7 @@ import java.util.logging.Level.INFO
 import java.util.logging.Level.WARNING
 import java.util.logging.LogManager
 
-private const val DEFAULT_PORT = 7000
+private val DEFAULT_PORT = if (isMac()) 7001 else 7000
 private val DEFAULT_DATA_DIR = getProperty("user.home") + separator + ".briar"
 
 private class Main : CliktCommand(