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, method, params),
  74                             response -> logger.debug("Received unexpected response for id {}", response.getId()));
  75
  76                     if (result[0] !=null) {
  77                         sendResponse(200, result[0], httpExchange);
  78                     } else {
  79                         sendResponse(201, null, httpExchange);
  80                     }
  81
  82                 }
  83                 catch (Throwable aEx) {
  84                     logger.error("Failed to process request.", aEx);
  85                     sendResponse(200, JsonRpcResponse.forError(
  86                             new JsonRpcResponse.Error(JsonRpcResponse.Error.INTERNAL_ERROR,
  87                             "An internal server error has occurred.", null), null), httpExchange);
  88                 }
  89             });
  90
  91             server.start();
  92
  93     }
  94
  95     private void sendResponse(int status, Object response, HttpExchange httpExchange) throws IOException {
  96         if (response != null) {
  97             final var byteResponse = objectMapper.writeValueAsBytes(response);
  98
  99             httpExchange.getResponseHeaders().add("Content-Type", "application/json");
 100             httpExchange.sendResponseHeaders(status, byteResponse.length);
 101
 102             httpExchange.getResponseBody().write(byteResponse);
 103         } else {
 104             httpExchange.sendResponseHeaders(status, 0);
 105         }
 106
 107         httpExchange.getResponseBody().close();
 108     }
 109
 110 }