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.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.HashMap;
  23 import java.util.Locale;
  24 import java.util.Map;
  25 import java.util.Optional;
  26 import java.util.Spliterator;
  27 import java.util.Spliterators;
  28 import java.util.function.BiFunction;
  29 import java.util.function.Consumer;
  30 import java.util.stream.Stream;
  31 import java.util.stream.StreamSupport;
  32
  33 public class Utils {
  34
  35     private final static Logger logger = LoggerFactory.getLogger(Utils.class);
  36
  37     public static String getFileMimeType(final File file, final String defaultMimeType) throws IOException {
  38         var mime = Files.probeContentType(file.toPath());
  39         if (mime == null) {
  40             try (final InputStream bufferedStream = new BufferedInputStream(new FileInputStream(file))) {
  41                 mime = URLConnection.guessContentTypeFromStream(bufferedStream);
  42             }
  43         }
  44         if (mime == null) {
  45             return defaultMimeType;
  46         }
  47         return mime;
  48     }
  49
  50     public static Pair<StreamDetails, Optional<String>> createStreamDetailsFromDataURI(final String dataURI) {
  51         final DataURI uri = DataURI.of(dataURI);
  52
  53         return new Pair<>(new StreamDetails(new ByteArrayInputStream(uri.data()), uri.mediaType(), uri.data().length),
  54                 Optional.ofNullable(uri.parameter().get("filename")));
  55     }
  56
  57     public static StreamDetails createStreamDetailsFromFile(final File file) throws IOException {
  58         final InputStream stream = new FileInputStream(file);
  59         final var size = file.length();
  60         final var mime = getFileMimeType(file, "application/octet-stream");
  61         return new StreamDetails(stream, mime, size);
  62     }
  63
  64     public static Pair<StreamDetails, Optional<String>> createStreamDetails(final String value) throws IOException {
  65         try {
  66             return createStreamDetailsFromDataURI(value);
  67         } catch (final IllegalArgumentException e) {
  68             final File f = new File(value);
  69
  70             return new Pair<>(createStreamDetailsFromFile(f), Optional.of(f.getName()));
  71         }
  72     }
  73
  74     public static Fingerprint computeSafetyNumber(
  75             boolean isUuidCapable,
  76             RecipientAddress ownAddress,
  77             IdentityKey ownIdentityKey,
  78             RecipientAddress theirAddress,
  79             IdentityKey theirIdentityKey
  80     ) {
  81         int version;
  82         byte[] ownId;
  83         byte[] theirId;
  84
  85         if (!isUuidCapable && ownAddress.number().isPresent() && theirAddress.number().isPresent()) {
  86             // Version 1: E164 user
  87             version = 1;
  88             ownId = ownAddress.number().get().getBytes();
  89             theirId = theirAddress.number().get().getBytes();
  90         } else if (isUuidCapable && theirAddress.serviceId().isPresent()) {
  91             // Version 2: UUID user
  92             version = 2;
  93             ownId = ownAddress.getServiceId().toByteArray();
  94             theirId = theirAddress.getServiceId().toByteArray();
  95         } else {
  96             return null;
  97         }
  98
  99         return new NumericFingerprintGenerator(5200).createFor(version,
 100                 ownId,
 101                 ownIdentityKey,
 102                 theirId,
 103                 theirIdentityKey);
 104     }
 105
 106     public static Locale getDefaultLocale(Locale fallback) {
 107         final var locale = Locale.getDefault();
 108         if (locale == null) {
 109             logger.debug("No default locale found, using fallback: {}", fallback);
 110             return fallback;
 111         }
 112         final var localeString = locale.getLanguage() + "-" + locale.getCountry();
 113         try {
 114             Locale.LanguageRange.parse(localeString);
 115         } catch (IllegalArgumentException e) {
 116             logger.debug("Invalid locale '{}', using fallback: {}", locale, fallback);
 117             return fallback;
 118         }
 119
 120         logger.trace("Using default locale: {} ({})", locale, localeString);
 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 }