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| 1 | +/* |
| 2 | + * Copyright 2025 The Sigstore Authors. |
| 3 | + * |
| 4 | + * Licensed under the Apache License, Version 2.0 (the "License"); |
| 5 | + * you may not use this file except in compliance with the License. |
| 6 | + * You may obtain a copy of the License at |
| 7 | + * |
| 8 | + * http://www.apache.org/licenses/LICENSE-2.0 |
| 9 | + * |
| 10 | + * Unless required by applicable law or agreed to in writing, software |
| 11 | + * distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | + * See the License for the specific language governing permissions and |
| 14 | + * limitations under the License. |
| 15 | + */ |
| 16 | +package dev.sigstore.tuf.cli; |
| 17 | + |
| 18 | +import com.google.gson.Gson; |
| 19 | +import jakarta.servlet.ServletException; |
| 20 | +import jakarta.servlet.http.HttpServletRequest; |
| 21 | +import jakarta.servlet.http.HttpServletResponse; |
| 22 | +import java.io.ByteArrayOutputStream; |
| 23 | +import java.io.IOException; |
| 24 | +import java.io.InputStream; |
| 25 | +import java.io.OutputStream; |
| 26 | +import java.io.PrintStream; |
| 27 | +import java.nio.charset.StandardCharsets; |
| 28 | +import java.util.Arrays; |
| 29 | +import java.util.List; |
| 30 | +import java.util.Map; |
| 31 | +import org.eclipse.jetty.server.Request; |
| 32 | +import org.eclipse.jetty.server.Server; |
| 33 | +import org.eclipse.jetty.server.handler.AbstractHandler; |
| 34 | + |
| 35 | +public class TufConformanceServer { |
| 36 | + |
| 37 | + private static final Gson GSON = new Gson(); |
| 38 | + private static boolean debug = false; |
| 39 | + |
| 40 | + private static class ExecuteRequest { |
| 41 | + String[] args; |
| 42 | + String faketime; |
| 43 | + } |
| 44 | + |
| 45 | + public static void main(String[] args) throws Exception { |
| 46 | + if (args.length > 0 && "--debug".equals(args[0])) { |
| 47 | + debug = true; |
| 48 | + } |
| 49 | + int port = 8080; |
| 50 | + Server server = new Server(port); |
| 51 | + server.setHandler(new TufConformanceHandler()); |
| 52 | + server.start(); |
| 53 | + server.join(); |
| 54 | + } |
| 55 | + |
| 56 | + public static class TufConformanceHandler extends AbstractHandler { |
| 57 | + @Override |
| 58 | + public void handle( |
| 59 | + String target, |
| 60 | + Request baseRequest, |
| 61 | + HttpServletRequest request, |
| 62 | + HttpServletResponse response) |
| 63 | + throws IOException, ServletException { |
| 64 | + if ("/".equals(target)) { |
| 65 | + handleHealthCheck(response); |
| 66 | + } else if ("/execute".equals(target) && "POST".equals(request.getMethod())) { |
| 67 | + handleExecute(request, response); |
| 68 | + } |
| 69 | + baseRequest.setHandled(true); |
| 70 | + } |
| 71 | + } |
| 72 | + |
| 73 | + private static void handleExecute(HttpServletRequest request, HttpServletResponse response) |
| 74 | + throws IOException { |
| 75 | + ExecuteRequest executeRequest; |
| 76 | + try (InputStream is = request.getInputStream()) { |
| 77 | + String requestBody = new String(is.readAllBytes(), StandardCharsets.UTF_8); |
| 78 | + executeRequest = GSON.fromJson(requestBody, ExecuteRequest.class); |
| 79 | + } |
| 80 | + |
| 81 | + // Tests should not be run in parallel, to ensure orderly input/output |
| 82 | + PrintStream originalOut = System.out; |
| 83 | + PrintStream originalErr = System.err; |
| 84 | + |
| 85 | + ByteArrayOutputStream outContent = new ByteArrayOutputStream(); |
| 86 | + ByteArrayOutputStream errContent = new ByteArrayOutputStream(); |
| 87 | + |
| 88 | + try (PrintStream outPs = new PrintStream(outContent, true, StandardCharsets.UTF_8); |
| 89 | + PrintStream errPs = new PrintStream(errContent, true, StandardCharsets.UTF_8)) { |
| 90 | + if (!debug) { |
| 91 | + System.setOut(outPs); |
| 92 | + System.setErr(errPs); |
| 93 | + } |
| 94 | + |
| 95 | + List<String> args = new java.util.ArrayList<>(); |
| 96 | + args.add("--time"); |
| 97 | + args.add(executeRequest.faketime); |
| 98 | + args.addAll(Arrays.asList(executeRequest.args)); |
| 99 | + |
| 100 | + int exitCode = new picocli.CommandLine(new Tuf()).execute(args.toArray(String[]::new)); |
| 101 | + |
| 102 | + Map<String, Object> responseMap = |
| 103 | + Map.of( |
| 104 | + "stdout", outContent.toString(StandardCharsets.UTF_8), |
| 105 | + "stderr", errContent.toString(StandardCharsets.UTF_8), |
| 106 | + "exitCode", exitCode); |
| 107 | + String jsonResponse = GSON.toJson(responseMap); |
| 108 | + |
| 109 | + response.setStatus(HttpServletResponse.SC_OK); |
| 110 | + response.setContentType("application/json"); |
| 111 | + byte[] responseBytes = jsonResponse.getBytes(StandardCharsets.UTF_8); |
| 112 | + response.setContentLength(responseBytes.length); |
| 113 | + |
| 114 | + try (OutputStream os = response.getOutputStream()) { |
| 115 | + os.write(responseBytes); |
| 116 | + } |
| 117 | + } finally { |
| 118 | + if (!debug) { |
| 119 | + System.setOut(originalOut); |
| 120 | + System.setErr(originalErr); |
| 121 | + } |
| 122 | + } |
| 123 | + } |
| 124 | + |
| 125 | + private static void handleHealthCheck(HttpServletResponse response) throws IOException { |
| 126 | + response.setStatus(HttpServletResponse.SC_OK); |
| 127 | + response.getWriter().println("OK"); |
| 128 | + } |
| 129 | +} |
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