nmode's Git Repositories - signal-cli/blob - src/main/java/org/asamk/signal/http/HttpServerHandler.java

   1 package org.asamk.signal.http;
   2
   3 import com.fasterxml.jackson.databind.ObjectMapper;
   4 import com.sun.net.httpserver.HttpExchange;
   5 import com.sun.net.httpserver.HttpServer;
   6
   7 import org.asamk.signal.commands.Commands;
   8 import org.asamk.signal.jsonrpc.JsonRpcReader;
   9 import org.asamk.signal.jsonrpc.JsonRpcResponse;
  10 import org.asamk.signal.jsonrpc.JsonRpcSender;
  11 import org.asamk.signal.jsonrpc.SignalJsonRpcCommandHandler;
  12 import org.asamk.signal.manager.Manager;
  13 import org.asamk.signal.manager.MultiAccountManager;
  14 import org.asamk.signal.util.Util;
  15 import org.slf4j.Logger;
  16 import org.slf4j.LoggerFactory;
  17
  18 import java.io.IOException;
  19 import java.net.InetSocketAddress;
  20 import java.util.concurrent.Executors;
  21
  22 public class HttpServerHandler {
  23
  24     private final static Logger logger = LoggerFactory.getLogger(HttpServerHandler.class);
  25
  26     private final ObjectMapper objectMapper = Util.createJsonObjectMapper();
  27
  28     private final InetSocketAddress address;
  29
  30     private final SignalJsonRpcCommandHandler commandHandler;
  31
  32     public HttpServerHandler(final InetSocketAddress address, final Manager m) {
  33         this.address = address;
  34         commandHandler = new SignalJsonRpcCommandHandler(m, Commands::getCommand);
  35     }
  36
  37     public HttpServerHandler(final InetSocketAddress address, final MultiAccountManager c) {
  38         this.address = address;
  39         commandHandler = new SignalJsonRpcCommandHandler(c, Commands::getCommand);
  40     }
  41
  42     public void init() throws IOException {
  43
  44         logger.info("Starting server on " + address.toString());
  45
  46         final var server = HttpServer.create(address, 0);
  47         server.setExecutor(Executors.newFixedThreadPool(10));
  48
  49         server.createContext("/api/v1/rpc", httpExchange -> {
  50
  51             if (!"POST".equals(httpExchange.getRequestMethod())) {
  52                 sendResponse(405, null, httpExchange);
  53                 return;
  54             }
  55
  56             if (!"application/json".equals(httpExchange.getRequestHeaders().getFirst("Content-Type"))) {
  57                 sendResponse(415, null, httpExchange);
  58                 return;
  59             }
  60
  61             try {
  62
  63                 final Object[] result = {null};
  64                 final var jsonRpcSender = new JsonRpcSender(s -> {
  65                     if (result[0] != null) {
  66                         throw new AssertionError("There should only be a single JSON-RPC response");
  67                     }
  68
  69                     result[0] = s;
  70                 });
  71
  72                 final var jsonRpcReader = new JsonRpcReader(jsonRpcSender, httpExchange.getRequestBody());
  73                 jsonRpcReader.readMessages((method, params) -> commandHandler.handleRequest(objectMapper,
  74                         method,
  75                         params), response -> logger.debug("Received unexpected response for id {}", response.getId()));
  76
  77                 if (result[0] != null) {
  78                     sendResponse(200, result[0], httpExchange);
  79                 } else {
  80                     sendResponse(201, null, httpExchange);
  81                 }
  82
  83             } catch (Throwable aEx) {
  84                 logger.error("Failed to process request.", aEx);
  85                 sendResponse(200,
  86                         JsonRpcResponse.forError(new JsonRpcResponse.Error(JsonRpcResponse.Error.INTERNAL_ERROR,
  87                                 "An internal server error has occurred.",
  88                                 null), null),
  89                         httpExchange);
  90             }
  91         });
  92
  93         server.start();
  94
  95     }
  96
  97     private void sendResponse(int status, Object response, HttpExchange httpExchange) throws IOException {
  98         if (response != null) {
  99             final var byteResponse = objectMapper.writeValueAsBytes(response);
 100
 101             httpExchange.getResponseHeaders().add("Content-Type", "application/json");
 102             httpExchange.sendResponseHeaders(status, byteResponse.length);
 103
 104             httpExchange.getResponseBody().write(byteResponse);
 105         } else {
 106             httpExchange.sendResponseHeaders(status, 0);
 107         }
 108
 109         httpExchange.getResponseBody().close();
 110     }
 111
 112 }