nmode's Git Repositories - signal-cli/blob - lib/src/main/java/org/asamk/signal/manager/util/Utils.java

   1 package org.asamk.signal.manager.util;
   2
   3 import org.slf4j.Logger;
   4 import org.slf4j.LoggerFactory;
   5 import org.whispersystems.libsignal.IdentityKey;
   6 import org.whispersystems.libsignal.fingerprint.Fingerprint;
   7 import org.whispersystems.libsignal.fingerprint.NumericFingerprintGenerator;
   8 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
   9 import org.whispersystems.signalservice.api.util.StreamDetails;
  10
  11 import java.io.BufferedInputStream;
  12 import java.io.File;
  13 import java.io.FileInputStream;
  14 import java.io.IOException;
  15 import java.io.InputStream;
  16 import java.net.URLConnection;
  17 import java.net.URLDecoder;
  18 import java.nio.charset.StandardCharsets;
  19 import java.nio.file.Files;
  20 import java.util.HashMap;
  21 import java.util.Locale;
  22 import java.util.Map;
  23 import java.util.Spliterator;
  24 import java.util.Spliterators;
  25 import java.util.function.BiFunction;
  26 import java.util.function.Consumer;
  27 import java.util.stream.Stream;
  28 import java.util.stream.StreamSupport;
  29
  30 public class Utils {
  31
  32     private final static Logger logger = LoggerFactory.getLogger(Utils.class);
  33
  34     public static String getFileMimeType(File file, String defaultMimeType) throws IOException {
  35         var mime = Files.probeContentType(file.toPath());
  36         if (mime == null) {
  37             try (InputStream bufferedStream = new BufferedInputStream(new FileInputStream(file))) {
  38                 mime = URLConnection.guessContentTypeFromStream(bufferedStream);
  39             }
  40         }
  41         if (mime == null) {
  42             return defaultMimeType;
  43         }
  44         return mime;
  45     }
  46
  47     public static StreamDetails createStreamDetailsFromFile(File file) throws IOException {
  48         InputStream stream = new FileInputStream(file);
  49         final var size = file.length();
  50         final var mime = getFileMimeType(file, "application/octet-stream");
  51         return new StreamDetails(stream, mime, size);
  52     }
  53
  54     public static Fingerprint computeSafetyNumber(
  55             boolean isUuidCapable,
  56             SignalServiceAddress ownAddress,
  57             IdentityKey ownIdentityKey,
  58             SignalServiceAddress theirAddress,
  59             IdentityKey theirIdentityKey
  60     ) {
  61         int version;
  62         byte[] ownId;
  63         byte[] theirId;
  64
  65         if (isUuidCapable) {
  66             // Version 2: UUID user
  67             version = 2;
  68             ownId = ownAddress.getAci().toByteArray();
  69             theirId = theirAddress.getAci().toByteArray();
  70         } else {
  71             // Version 1: E164 user
  72             version = 1;
  73             if (!ownAddress.getNumber().isPresent() || !theirAddress.getNumber().isPresent()) {
  74                 return null;
  75             }
  76             ownId = ownAddress.getNumber().get().getBytes();
  77             theirId = theirAddress.getNumber().get().getBytes();
  78         }
  79
  80         return new NumericFingerprintGenerator(5200).createFor(version,
  81                 ownId,
  82                 ownIdentityKey,
  83                 theirId,
  84                 theirIdentityKey);
  85     }
  86
  87     public static Locale getDefaultLocale(Locale fallback) {
  88         final var locale = Locale.getDefault();
  89         if (locale == null) {
  90             return fallback;
  91         }
  92         try {
  93             Locale.LanguageRange.parse(locale.getLanguage() + "-" + locale.getCountry());
  94         } catch (IllegalArgumentException e) {
  95             logger.debug("Invalid locale, ignoring: {}", locale);
  96             return fallback;
  97         }
  98
  99         return locale;
 100     }
 101
 102     public static <L, R, T> Stream<T> zip(Stream<L> leftStream, Stream<R> rightStream, BiFunction<L, R, T> combiner) {
 103         Spliterator<L> lefts = leftStream.spliterator();
 104         Spliterator<R> rights = rightStream.spliterator();
 105         return StreamSupport.stream(new Spliterators.AbstractSpliterator<T>(Long.min(lefts.estimateSize(),
 106                 rights.estimateSize()), lefts.characteristics() & rights.characteristics()) {
 107             @Override
 108             public boolean tryAdvance(Consumer<? super T> action) {
 109                 return lefts.tryAdvance(left -> rights.tryAdvance(right -> action.accept(combiner.apply(left, right))));
 110             }
 111         }, leftStream.isParallel() || rightStream.isParallel());
 112     }
 113
 114     public static Map<String, String> getQueryMap(String query) {
 115         var params = query.split("&");
 116         var map = new HashMap<String, String>();
 117         for (var param : params) {
 118             final var paramParts = param.split("=");
 119             var name = URLDecoder.decode(paramParts[0], StandardCharsets.UTF_8);
 120             var value = URLDecoder.decode(paramParts[1], StandardCharsets.UTF_8);
 121             map.put(name, value);
 122         }
 123         return map;
 124     }
 125 }