From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Zach Brown Date: Mon, 27 May 2019 03:40:05 -0500 Subject: [PATCH] Implement Paper VersionChecker diff --git a/src/main/java/com/destroystokyo/paper/PaperVersionFetcher.java b/src/main/java/com/destroystokyo/paper/PaperVersionFetcher.java new file mode 100644 index 0000000000000000000000000000000000000000..5deed3e25ff41ab0a4015a5fd0c1e952cdb16402 --- /dev/null +++ b/src/main/java/com/destroystokyo/paper/PaperVersionFetcher.java @@ -0,0 +1,115 @@ +package com.destroystokyo.paper; + +import com.destroystokyo.paper.util.VersionFetcher; +import com.google.common.base.Charsets; +import com.google.common.io.Resources; +import com.google.gson.*; + +import javax.annotation.Nonnull; +import javax.annotation.Nullable; +import java.io.*; +import java.net.HttpURLConnection; +import java.net.URL; + +public class PaperVersionFetcher implements VersionFetcher { + private static final java.util.regex.Pattern VER_PATTERN = java.util.regex.Pattern.compile("^([0-9\\.]*)\\-.*R"); // R is an anchor, will always give '-R' at end + private static final String GITHUB_BRANCH_NAME = "master"; + private static @Nullable String mcVer; + + @Override + public long getCacheTime() { + return 720000; + } + + @Nonnull + @Override + public String getVersionMessage(@Nonnull String serverVersion) { + String[] parts = serverVersion.substring("git-Paper-".length()).split("[-\\s]"); + return getUpdateStatusMessage("PaperMC/Paper", GITHUB_BRANCH_NAME, parts[0]); + } + + private static @Nullable String getMinecraftVersion() { + if (mcVer == null) { + java.util.regex.Matcher matcher = VER_PATTERN.matcher(org.bukkit.Bukkit.getBukkitVersion()); + if (matcher.find()) { + String result = matcher.group(); + mcVer = result.substring(0, result.length() - 2); // strip 'R' anchor and trailing '-' + } else { + org.bukkit.Bukkit.getLogger().warning("Unable to match version to pattern! Report to PaperMC!"); + org.bukkit.Bukkit.getLogger().warning("Pattern: " + VER_PATTERN.toString()); + org.bukkit.Bukkit.getLogger().warning("Version: " + org.bukkit.Bukkit.getBukkitVersion()); + } + } + + return mcVer; + } + + private static String getUpdateStatusMessage(@Nonnull String repo, @Nonnull String branch, @Nonnull String versionInfo) { + int distance; + try { + int jenkinsBuild = Integer.parseInt(versionInfo); + distance = fetchDistanceFromSiteApi(jenkinsBuild, getMinecraftVersion()); + } catch (NumberFormatException ignored) { + versionInfo = versionInfo.replace("\"", ""); + distance = fetchDistanceFromGitHub(repo, branch, versionInfo); + } + + switch (distance) { + case -1: + return "Error obtaining version information"; + case 0: + return "You are running the latest version"; + case -2: + return "Unknown version"; + default: + return "You are " + distance + " version(s) behind"; + } + } + + private static int fetchDistanceFromSiteApi(int jenkinsBuild, @Nullable String siteApiVersion) { + if (siteApiVersion == null) { return -1; } + try { + try (BufferedReader reader = Resources.asCharSource( + new URL("https://papermc.io/api/v1/paper/" + siteApiVersion + "/latest"), + Charsets.UTF_8 + ).openBufferedStream()) { + JsonObject json = new Gson().fromJson(reader, JsonObject.class); + int latest = json.get("build").getAsInt(); + return latest - jenkinsBuild; + } catch (JsonSyntaxException ex) { + ex.printStackTrace(); + return -1; + } + } catch (IOException e) { + e.printStackTrace(); + return -1; + } + } + + // Contributed by Techcable in GH-65 + private static int fetchDistanceFromGitHub(@Nonnull String repo, @Nonnull String branch, @Nonnull String hash) { + try { + HttpURLConnection connection = (HttpURLConnection) new URL("https://api.github.com/repos/" + repo + "/compare/" + branch + "..." + hash).openConnection(); + connection.connect(); + if (connection.getResponseCode() == HttpURLConnection.HTTP_NOT_FOUND) return -2; // Unknown commit + try (BufferedReader reader = new BufferedReader(new InputStreamReader(connection.getInputStream(), Charsets.UTF_8))) { + JsonObject obj = new Gson().fromJson(reader, JsonObject.class); + String status = obj.get("status").getAsString(); + switch (status) { + case "identical": + return 0; + case "behind": + return obj.get("behind_by").getAsInt(); + default: + return -1; + } + } catch (JsonSyntaxException | NumberFormatException e) { + e.printStackTrace(); + return -1; + } + } catch (IOException e) { + e.printStackTrace(); + return -1; + } + } +} diff --git a/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java b/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java index f647450b8c6977b4a6bb1819b34052c4ae2fe0f4..79ddf03c7f3afc868cb73ee4c000fc879ede90d8 100644 --- a/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java +++ b/src/main/java/org/bukkit/craftbukkit/util/CraftMagicNumbers.java @@ -309,6 +309,11 @@ public final class CraftMagicNumbers implements UnsafeValues { public String getTimingsServerName() { return com.destroystokyo.paper.PaperConfig.timingsServerName; } + + @Override + public com.destroystokyo.paper.util.VersionFetcher getVersionFetcher() { + return new com.destroystokyo.paper.PaperVersionFetcher(); + } // Paper end /**