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.asamk.signal.manager.api.Pair;
   4 import org.asamk.signal.manager.storage.recipients.RecipientAddress;
   5 import org.signal.libsignal.protocol.IdentityKey;
   6 import org.signal.libsignal.protocol.fingerprint.Fingerprint;
   7 import org.signal.libsignal.protocol.fingerprint.NumericFingerprintGenerator;
   8 import org.slf4j.Logger;
   9 import org.slf4j.LoggerFactory;
  10 import org.whispersystems.signalservice.api.util.StreamDetails;
  11
  12 import java.io.ByteArrayInputStream;
  13 import java.io.File;
  14 import java.io.FileInputStream;
  15 import java.io.IOException;
  16 import java.io.InputStream;
  17 import java.net.URLDecoder;
  18 import java.nio.charset.StandardCharsets;
  19 import java.util.HashMap;
  20 import java.util.Locale;
  21 import java.util.Map;
  22 import java.util.Optional;
  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 Pair<StreamDetails, Optional<String>> createStreamDetailsFromDataURI(final String dataURI) {
  35         final DataURI uri = DataURI.of(dataURI);
  36
  37         return new Pair<>(new StreamDetails(new ByteArrayInputStream(uri.data()), uri.mediaType(), uri.data().length),
  38                 Optional.ofNullable(uri.parameter().get("filename")));
  39     }
  40
  41     public static StreamDetails createStreamDetailsFromFile(final File file) throws IOException {
  42         final InputStream stream = new FileInputStream(file);
  43         final var size = file.length();
  44         final var mime = MimeUtils.getFileMimeType(file).orElse(MimeUtils.OCTET_STREAM);
  45         return new StreamDetails(stream, mime, size);
  46     }
  47
  48     public static Pair<StreamDetails, Optional<String>> createStreamDetails(final String value) throws IOException {
  49         try {
  50             return createStreamDetailsFromDataURI(value);
  51         } catch (final IllegalArgumentException e) {
  52             final File f = new File(value);
  53
  54             return new Pair<>(createStreamDetailsFromFile(f), Optional.of(f.getName()));
  55         }
  56     }
  57
  58     public static Fingerprint computeSafetyNumber(
  59             boolean isUuidCapable,
  60             RecipientAddress ownAddress,
  61             IdentityKey ownIdentityKey,
  62             RecipientAddress theirAddress,
  63             IdentityKey theirIdentityKey
  64     ) {
  65         int version;
  66         byte[] ownId;
  67         byte[] theirId;
  68
  69         if (!isUuidCapable && ownAddress.number().isPresent() && theirAddress.number().isPresent()) {
  70             // Version 1: E164 user
  71             version = 1;
  72             ownId = ownAddress.number().get().getBytes();
  73             theirId = theirAddress.number().get().getBytes();
  74         } else if (isUuidCapable && theirAddress.serviceId().isPresent()) {
  75             // Version 2: UUID user
  76             version = 2;
  77             ownId = ownAddress.getServiceId().toByteArray();
  78             theirId = theirAddress.getServiceId().toByteArray();
  79         } else {
  80             return null;
  81         }
  82
  83         return new NumericFingerprintGenerator(5200).createFor(version,
  84                 ownId,
  85                 ownIdentityKey,
  86                 theirId,
  87                 theirIdentityKey);
  88     }
  89
  90     public static Locale getDefaultLocale(Locale fallback) {
  91         final var locale = Locale.getDefault();
  92         if (locale == null) {
  93             logger.debug("No default locale found, using fallback: {}", fallback);
  94             return fallback;
  95         }
  96         final var localeString = locale.getLanguage() + "-" + locale.getCountry();
  97         try {
  98             Locale.LanguageRange.parse(localeString);
  99         } catch (IllegalArgumentException e) {
 100             logger.debug("Invalid locale '{}', using fallback: {}", locale, fallback);
 101             return fallback;
 102         }
 103
 104         logger.trace("Using default locale: {} ({})", locale, localeString);
 105         return locale;
 106     }
 107
 108     public static <L, R, T> Stream<T> zip(Stream<L> leftStream, Stream<R> rightStream, BiFunction<L, R, T> combiner) {
 109         Spliterator<L> lefts = leftStream.spliterator();
 110         Spliterator<R> rights = rightStream.spliterator();
 111         return StreamSupport.stream(new Spliterators.AbstractSpliterator<>(Long.min(lefts.estimateSize(),
 112                 rights.estimateSize()), lefts.characteristics() & rights.characteristics()) {
 113             @Override
 114             public boolean tryAdvance(Consumer<? super T> action) {
 115                 return lefts.tryAdvance(left -> rights.tryAdvance(right -> action.accept(combiner.apply(left, right))));
 116             }
 117         }, leftStream.isParallel() || rightStream.isParallel());
 118     }
 119
 120     public static Map<String, String> getQueryMap(String query) {
 121         var params = query.split("&");
 122         var map = new HashMap<String, String>();
 123         for (var param : params) {
 124             final var paramParts = param.split("=");
 125             var name = URLDecoder.decode(paramParts[0], StandardCharsets.UTF_8);
 126             var value = paramParts.length == 1 ? null : URLDecoder.decode(paramParts[1], StandardCharsets.UTF_8);
 127             map.put(name, value);
 128         }
 129         return map;
 130     }
 131 }