Paper/patches/server/0003-Build-system-changes.patch

From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Zach Brown <zach.brown@destroystokyo.com>
Date: Mon, 29 Feb 2016 20:40:33 -0600
Subject: [PATCH] Build system changes

== AT ==
public net.minecraft.server.packs.VanillaPackResourcesBuilder safeGetPath(Ljava/net/URI;)Ljava/nio/file/Path;

Co-authored-by: Jake Potrebic <jake.m.potrebic@gmail.com>

diff --git a/build.gradle.kts b/build.gradle.kts
index a457cf30d37037ce09fbe5d26e051b9555ce9982..9ca8ddea1d53076e0f23c6e3bf3e3eca5cceb393 100644
--- a/build.gradle.kts
+++ b/build.gradle.kts
@@ -8,9 +8,7 @@ plugins {
 dependencies {
     implementation(project(":paper-api"))
     implementation("jline:jline:2.12.1")
-    implementation("org.apache.logging.log4j:log4j-iostreams:2.22.1") {
-        exclude(group = "org.apache.logging.log4j", module = "log4j-api")
-    }
+    implementation("org.apache.logging.log4j:log4j-iostreams:2.22.1") // Paper - remove exclusion
     implementation("org.ow2.asm:asm-commons:9.7")
     implementation("commons-lang:commons-lang:2.6")
     runtimeOnly("org.xerial:sqlite-jdbc:3.45.3.0")
@@ -38,6 +36,7 @@ tasks.jar {
         val gitHash = git("rev-parse", "--short=7", "HEAD").getText().trim()
         val implementationVersion = System.getenv("BUILD_NUMBER") ?: "\"$gitHash\""
         val date = git("show", "-s", "--format=%ci", gitHash).getText().trim() // Paper
+        val gitBranch = git("rev-parse", "--abbrev-ref", "HEAD").getText().trim() // Paper
         attributes(
             "Main-Class" to "org.bukkit.craftbukkit.Main",
             "Implementation-Title" to "CraftBukkit",
@@ -46,6 +45,9 @@ tasks.jar {
             "Specification-Title" to "Bukkit",
             "Specification-Version" to project.version,
             "Specification-Vendor" to "Bukkit Team",
+            "Git-Branch" to gitBranch, // Paper
+            "Git-Commit" to gitHash, // Paper
+            "CraftBukkit-Package-Version" to paperweight.craftBukkitPackageVersion.get(), // Paper
         )
         for (tld in setOf("net", "com", "org")) {
             attributes("$tld/bukkit", "Sealed" to true)
@@ -58,6 +60,17 @@ publishing {
     }
 }
 
+// Paper start
+val scanJar = tasks.register("scanJarForBadCalls", io.papermc.paperweight.tasks.ScanJarForBadCalls::class) {
+    badAnnotations.add("Lio/papermc/paper/annotation/DoNotUse;")
+    jarToScan.set(tasks.serverJar.flatMap { it.archiveFile })
+    classpath.from(configurations.compileClasspath)
+}
+tasks.check {
+    dependsOn(scanJar)
+}
+// Paper end
+
 tasks.test {
     exclude("org/bukkit/craftbukkit/inventory/ItemStack*Test.class")
     useJUnitPlatform()
@@ -123,4 +136,5 @@ tasks.registerRunTask("runReobf") {
 tasks.registerRunTask("runDev") {
     description = "Spin up a non-relocated Mojang-mapped test server"
     classpath(sourceSets.main.map { it.runtimeClasspath })
+    jvmArgs("-DPaper.pushPaperAssetsRoot=true")
 }
diff --git a/src/main/java/net/minecraft/resources/ResourceLocation.java b/src/main/java/net/minecraft/resources/ResourceLocation.java
index 0e93817621bad5d69cf0f9f839d033c47c861457..0ad6d9d417193248f6a9df67f1d1a66cef3ff122 100644
--- a/src/main/java/net/minecraft/resources/ResourceLocation.java
+++ b/src/main/java/net/minecraft/resources/ResourceLocation.java
@@ -32,6 +32,7 @@ public class ResourceLocation implements Comparable<ResourceLocation> {
     public static final char NAMESPACE_SEPARATOR = ':';
     public static final String DEFAULT_NAMESPACE = "minecraft";
     public static final String REALMS_NAMESPACE = "realms";
+    public static final String PAPER_NAMESPACE = "paper"; // Paper
     private final String namespace;
     private final String path;
 
diff --git a/src/main/java/net/minecraft/server/packs/VanillaPackResourcesBuilder.java b/src/main/java/net/minecraft/server/packs/VanillaPackResourcesBuilder.java
index 14fc03563daea531314c7ceba56dbb47884010ee..fcf95958ef659c7aa8e28026961fa1d6a5f8b28c 100644
--- a/src/main/java/net/minecraft/server/packs/VanillaPackResourcesBuilder.java
+++ b/src/main/java/net/minecraft/server/packs/VanillaPackResourcesBuilder.java
@@ -138,6 +138,15 @@ public class VanillaPackResourcesBuilder {
 
     public VanillaPackResourcesBuilder applyDevelopmentConfig() {
         developmentConfig.accept(this);
+        if (Boolean.getBoolean("Paper.pushPaperAssetsRoot")) {
+            try {
+                this.pushAssetPath(net.minecraft.server.packs.PackType.SERVER_DATA, net.minecraft.server.packs.VanillaPackResourcesBuilder.safeGetPath(java.util.Objects.requireNonNull(
+                    // Important that this is a patched class
+                    VanillaPackResourcesBuilder.class.getResource("/data/.paperassetsroot"), "Missing required .paperassetsroot file").toURI()).getParent());
+            } catch (java.net.URISyntaxException | IOException ex) {
+                throw new RuntimeException(ex);
+            }
+        }
         return this;
     }
 
diff --git a/src/main/java/net/minecraft/server/packs/repository/ServerPacksSource.java b/src/main/java/net/minecraft/server/packs/repository/ServerPacksSource.java
index a5e8713bc0fefae455b666ebf13c9529e7ba94e6..def8ed40ef732b512a07fe50449c77a860b97462 100644
--- a/src/main/java/net/minecraft/server/packs/repository/ServerPacksSource.java
+++ b/src/main/java/net/minecraft/server/packs/repository/ServerPacksSource.java
@@ -48,7 +48,7 @@ public class ServerPacksSource extends BuiltInPackSource {
     public static VanillaPackResources createVanillaPackSource() {
         return new VanillaPackResourcesBuilder()
             .setMetadata(BUILT_IN_METADATA)
-            .exposeNamespace("minecraft")
+            .exposeNamespace("minecraft", ResourceLocation.PAPER_NAMESPACE) // Paper
             .applyDevelopmentConfig()
             .pushJarResources()
             .build(VANILLA_PACK_INFO);
@@ -68,7 +68,15 @@ public class ServerPacksSource extends BuiltInPackSource {
     @Nullable
     @Override
     protected Pack createBuiltinPack(String fileName, Pack.ResourcesSupplier packFactory, Component displayName) {
-        return Pack.readMetaAndCreate(createBuiltInPackLocation(fileName, displayName), packFactory, PackType.SERVER_DATA, FEATURE_SELECTION_CONFIG);
+        // Paper start - custom built-in pack
+        final PackLocationInfo info;
+        if ("paper".equals(fileName)) {
+            info = new PackLocationInfo(fileName, displayName, PackSource.BUILT_IN, Optional.empty());
+        } else {
+            info = createBuiltInPackLocation(fileName, displayName);
+        }
+        return Pack.readMetaAndCreate(info, packFactory, PackType.SERVER_DATA, FEATURE_SELECTION_CONFIG);
+        // Paper end - custom built-in pack
     }
 
     public static PackRepository createPackRepository(Path dataPacksPath, DirectoryValidator symlinkFinder) {
diff --git a/src/main/java/net/minecraft/world/level/DataPackConfig.java b/src/main/java/net/minecraft/world/level/DataPackConfig.java
index 3338a2423275ffff000a61d49167bb631bac3e32..72b5095b286009e95c7cbc0a579d3527d4b88866 100644
--- a/src/main/java/net/minecraft/world/level/DataPackConfig.java
+++ b/src/main/java/net/minecraft/world/level/DataPackConfig.java
@@ -9,8 +9,8 @@ public class DataPackConfig {
     public static final DataPackConfig DEFAULT = new DataPackConfig(ImmutableList.of("vanilla"), ImmutableList.of());
     public static final Codec<DataPackConfig> CODEC = RecordCodecBuilder.create(
         instance -> instance.group(
-                    Codec.STRING.listOf().fieldOf("Enabled").forGetter(settings -> settings.enabled),
-                    Codec.STRING.listOf().fieldOf("Disabled").forGetter(settings -> settings.disabled)
+                    Codec.STRING.listOf().validate(DataPackConfig::ensureEnabled).fieldOf("Enabled").forGetter(settings -> settings.enabled), // Paper - ensure "paper" is always enabled
+                    Codec.STRING.listOf().validate(DataPackConfig::ensureNotDisabled).fieldOf("Disabled").forGetter(settings -> settings.disabled) // Paper - ensure "paper" is always enabled
                 )
                 .apply(instance, DataPackConfig::new)
     );
@@ -29,4 +29,13 @@ public class DataPackConfig {
     public List<String> getDisabled() {
         return this.disabled;
     }
+    // Paper start - ensure "paper" datapack is always enabled
+    private static com.mojang.serialization.DataResult<List<String>> ensureEnabled(final List<String> enabled) {
+        return com.mojang.serialization.DataResult.success(enabled.contains("paper") ? enabled:  io.papermc.paper.util.MCUtil.copyListAndAdd(enabled, "paper"));
+    }
+
+    private static com.mojang.serialization.DataResult<List<String>> ensureNotDisabled(final List<String> disabled) {
+        return com.mojang.serialization.DataResult.success(io.papermc.paper.util.MCUtil.copyListAndRemoveIf(disabled, "paper"::equals));
+    }
+    // Paper end - ensure "paper" datapack is always enabled
 }
diff --git a/src/main/java/org/bukkit/craftbukkit/Main.java b/src/main/java/org/bukkit/craftbukkit/Main.java
index 5595eb892fa868508c45448942da65d7c11d49fd..4b8602b168f9dd386aa72b4e5d189c441c93542e 100644
--- a/src/main/java/org/bukkit/craftbukkit/Main.java
+++ b/src/main/java/org/bukkit/craftbukkit/Main.java
@@ -210,7 +210,7 @@ public class Main {
                 }
 
                 if (Main.class.getPackage().getImplementationVendor() != null && System.getProperty("IReallyKnowWhatIAmDoingISwear") == null) {
-                    Date buildDate = new Date(Integer.parseInt(Main.class.getPackage().getImplementationVendor()) * 1000L);
+                    Date buildDate = new java.text.SimpleDateFormat("yyyy-MM-dd HH:mm:ss Z").parse(Main.class.getPackage().getImplementationVendor()); // Paper
 
                     Calendar deadline = Calendar.getInstance();
                     deadline.add(Calendar.DAY_OF_YEAR, -3);
diff --git a/src/main/java/org/bukkit/craftbukkit/util/Versioning.java b/src/main/java/org/bukkit/craftbukkit/util/Versioning.java
index 93046379d0cefd5d3236fc59e698809acdc18f80..774556a62eb240da42e84db4502e2ed43495be17 100644
--- a/src/main/java/org/bukkit/craftbukkit/util/Versioning.java
+++ b/src/main/java/org/bukkit/craftbukkit/util/Versioning.java
@@ -11,7 +11,7 @@ public final class Versioning {
     public static String getBukkitVersion() {
         String result = "Unknown-Version";
 
-        InputStream stream = Bukkit.class.getClassLoader().getResourceAsStream("META-INF/maven/org.spigotmc/spigot-api/pom.properties");
+        InputStream stream = Bukkit.class.getClassLoader().getResourceAsStream("META-INF/maven/io.papermc.paper/paper-api/pom.properties");
         Properties properties = new Properties();
 
         if (stream != null) {
diff --git a/src/main/resources/data/.paperassetsroot b/src/main/resources/data/.paperassetsroot
new file mode 100644
index 0000000000000000000000000000000000000000..e69de29bb2d1d6434b8b29ae775ad8c2e48c5391
diff --git a/src/main/resources/data/minecraft/datapacks/paper/pack.mcmeta b/src/main/resources/data/minecraft/datapacks/paper/pack.mcmeta
new file mode 100644
index 0000000000000000000000000000000000000000..288fbe68c6053f40e72f0feedef0ae0fed10fa67
--- /dev/null
+++ b/src/main/resources/data/minecraft/datapacks/paper/pack.mcmeta
@@ -0,0 +1,6 @@
+{
+    "pack": {
+        "description": "Built-in Paper Datapack",
+        "pack_format": 41
+    }
+}
diff --git a/src/test/java/org/bukkit/support/AbstractTestingBase.java b/src/test/java/org/bukkit/support/AbstractTestingBase.java
index 1bdf0b2b8f8e6dace403695fece80ebb3dc9e039..544307fe34cbcfa286a7d7b30900ebea127d189e 100644
--- a/src/test/java/org/bukkit/support/AbstractTestingBase.java
+++ b/src/test/java/org/bukkit/support/AbstractTestingBase.java
@@ -43,6 +43,7 @@ public abstract class AbstractTestingBase {
     public static final Registry<Biome> BIOMES;
 
     static {
+        System.setProperty("Paper.pushPaperAssetsRoot", "true"); // Paper
         SharedConstants.tryDetectVersion();
         Bootstrap.bootStrap();
         // Populate available packs