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.signal.libsignal.protocol.IdentityKey;
   5 import org.signal.libsignal.protocol.fingerprint.Fingerprint;
   6 import org.signal.libsignal.protocol.fingerprint.NumericFingerprintGenerator;
   7 import org.slf4j.Logger;
   8 import org.slf4j.LoggerFactory;
   9 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
  10 import org.whispersystems.signalservice.api.util.StreamDetails;
  11
  12 import java.io.BufferedInputStream;
  13 import java.io.ByteArrayInputStream;
  14 import java.io.File;
  15 import java.io.FileInputStream;
  16 import java.io.IOException;
  17 import java.io.InputStream;
  18 import java.net.URLConnection;
  19 import java.net.URLDecoder;
  20 import java.nio.charset.StandardCharsets;
  21 import java.nio.file.Files;
  22 import java.util.Base64;
  23 import java.util.HashMap;
  24 import java.util.Locale;
  25 import java.util.Map;
  26 import java.util.Optional;
  27 import java.util.Spliterator;
  28 import java.util.Spliterators;
  29 import java.util.function.BiFunction;
  30 import java.util.function.Consumer;
  31 import java.util.stream.Stream;
  32 import java.util.stream.StreamSupport;
  33
  34 public class Utils {
  35
  36     private final static Logger logger = LoggerFactory.getLogger(Utils.class);
  37
  38     public static String getFileMimeType(final File file, final String defaultMimeType) throws IOException {
  39         var mime = Files.probeContentType(file.toPath());
  40         if (mime == null) {
  41             try (final InputStream bufferedStream = new BufferedInputStream(new FileInputStream(file))) {
  42                 mime = URLConnection.guessContentTypeFromStream(bufferedStream);
  43             }
  44         }
  45         if (mime == null) {
  46             return defaultMimeType;
  47         }
  48         return mime;
  49     }
  50
  51     public static Pair<StreamDetails, Optional<String>> createStreamDetailsFromDataURI(final String dataURI) {
  52         final DataURI uri = DataURI.of(dataURI);
  53
  54         return new Pair<>(new StreamDetails(
  55                 new ByteArrayInputStream(uri.data()), uri.mediaType(), uri.data().length),
  56                 Optional.ofNullable(uri.parameter().get("filename")));
  57     }
  58
  59     public static StreamDetails createStreamDetailsFromFile(final File file) throws IOException {
  60         final InputStream stream = new FileInputStream(file);
  61         final var size = file.length();
  62         final var mime = getFileMimeType(file, "application/octet-stream");
  63         return new StreamDetails(stream, mime, size);
  64     }
  65
  66     public static Pair<StreamDetails, Optional<String>> createStreamDetails(final String value) throws IOException {
  67         try {
  68             return createStreamDetailsFromDataURI(value);
  69         } catch (final IllegalArgumentException e) {
  70             final File f = new File(value);
  71
  72             return new Pair<>(createStreamDetailsFromFile(f), Optional.of(f.getName()));
  73         }
  74     }
  75
  76     public static Fingerprint computeSafetyNumber(
  77             boolean isUuidCapable,
  78             SignalServiceAddress ownAddress,
  79             IdentityKey ownIdentityKey,
  80             SignalServiceAddress theirAddress,
  81             IdentityKey theirIdentityKey
  82     ) {
  83         int version;
  84         byte[] ownId;
  85         byte[] theirId;
  86
  87         if (isUuidCapable) {
  88             // Version 2: UUID user
  89             version = 2;
  90             ownId = ownAddress.getServiceId().toByteArray();
  91             theirId = theirAddress.getServiceId().toByteArray();
  92         } else {
  93             // Version 1: E164 user
  94             version = 1;
  95             if (ownAddress.getNumber().isEmpty() || theirAddress.getNumber().isEmpty()) {
  96                 return null;
  97             }
  98             ownId = ownAddress.getNumber().get().getBytes();
  99             theirId = theirAddress.getNumber().get().getBytes();
 100         }
 101
 102         return new NumericFingerprintGenerator(5200).createFor(version,
 103                 ownId,
 104                 ownIdentityKey,
 105                 theirId,
 106                 theirIdentityKey);
 107     }
 108
 109     public static Locale getDefaultLocale(Locale fallback) {
 110         final var locale = Locale.getDefault();
 111         if (locale == null) {
 112             return fallback;
 113         }
 114         try {
 115             Locale.LanguageRange.parse(locale.getLanguage() + "-" + locale.getCountry());
 116         } catch (IllegalArgumentException e) {
 117             logger.debug("Invalid locale, ignoring: {}", locale);
 118             return fallback;
 119         }
 120
 121         return locale;
 122     }
 123
 124     public static <L, R, T> Stream<T> zip(Stream<L> leftStream, Stream<R> rightStream, BiFunction<L, R, T> combiner) {
 125         Spliterator<L> lefts = leftStream.spliterator();
 126         Spliterator<R> rights = rightStream.spliterator();
 127         return StreamSupport.stream(new Spliterators.AbstractSpliterator<>(Long.min(lefts.estimateSize(),
 128                 rights.estimateSize()), lefts.characteristics() & rights.characteristics()) {
 129             @Override
 130             public boolean tryAdvance(Consumer<? super T> action) {
 131                 return lefts.tryAdvance(left -> rights.tryAdvance(right -> action.accept(combiner.apply(left, right))));
 132             }
 133         }, leftStream.isParallel() || rightStream.isParallel());
 134     }
 135
 136     public static Map<String, String> getQueryMap(String query) {
 137         var params = query.split("&");
 138         var map = new HashMap<String, String>();
 139         for (var param : params) {
 140             final var paramParts = param.split("=");
 141             var name = URLDecoder.decode(paramParts[0], StandardCharsets.UTF_8);
 142             var value = URLDecoder.decode(paramParts[1], StandardCharsets.UTF_8);
 143             map.put(name, value);
 144         }
 145         return map;
 146     }
 147 }