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

   1 package org.asamk.signal.manager;
   2
   3 import org.asamk.signal.AttachmentInvalidException;
   4 import org.signal.libsignal.metadata.certificate.CertificateValidator;
   5 import org.whispersystems.libsignal.IdentityKey;
   6 import org.whispersystems.libsignal.InvalidKeyException;
   7 import org.whispersystems.libsignal.ecc.Curve;
   8 import org.whispersystems.libsignal.ecc.ECPublicKey;
   9 import org.whispersystems.libsignal.fingerprint.Fingerprint;
  10 import org.whispersystems.libsignal.fingerprint.NumericFingerprintGenerator;
  11 import org.whispersystems.libsignal.util.guava.Optional;
  12 import org.whispersystems.signalservice.api.messages.SignalServiceAttachment;
  13 import org.whispersystems.signalservice.api.messages.SignalServiceAttachmentStream;
  14 import org.whispersystems.signalservice.api.messages.SignalServiceEnvelope;
  15 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
  16 import org.whispersystems.signalservice.api.util.InvalidNumberException;
  17 import org.whispersystems.signalservice.api.util.PhoneNumberFormatter;
  18 import org.whispersystems.signalservice.api.util.StreamDetails;
  19 import org.whispersystems.util.Base64;
  20
  21 import java.io.BufferedInputStream;
  22 import java.io.DataInputStream;
  23 import java.io.DataOutputStream;
  24 import java.io.File;
  25 import java.io.FileInputStream;
  26 import java.io.FileNotFoundException;
  27 import java.io.FileOutputStream;
  28 import java.io.IOException;
  29 import java.io.InputStream;
  30 import java.io.OutputStream;
  31 import java.io.UnsupportedEncodingException;
  32 import java.net.URI;
  33 import java.net.URLConnection;
  34 import java.net.URLDecoder;
  35 import java.net.URLEncoder;
  36 import java.nio.file.Files;
  37 import java.util.ArrayList;
  38 import java.util.HashMap;
  39 import java.util.List;
  40 import java.util.Map;
  41
  42 import static org.whispersystems.signalservice.internal.util.Util.isEmpty;
  43
  44 class Utils {
  45
  46     static List<SignalServiceAttachment> getSignalServiceAttachments(List<String> attachments) throws AttachmentInvalidException {
  47         List<SignalServiceAttachment> signalServiceAttachments = null;
  48         if (attachments != null) {
  49             signalServiceAttachments = new ArrayList<>(attachments.size());
  50             for (String attachment : attachments) {
  51                 try {
  52                     signalServiceAttachments.add(createAttachment(new File(attachment)));
  53                 } catch (IOException e) {
  54                     throw new AttachmentInvalidException(attachment, e);
  55                 }
  56             }
  57         }
  58         return signalServiceAttachments;
  59     }
  60
  61     private static String getFileMimeType(File file) throws IOException {
  62         String mime = Files.probeContentType(file.toPath());
  63         if (mime == null) {
  64             try (InputStream bufferedStream = new BufferedInputStream(new FileInputStream(file))) {
  65                 mime = URLConnection.guessContentTypeFromStream(bufferedStream);
  66             }
  67         }
  68         if (mime == null) {
  69             mime = "application/octet-stream";
  70         }
  71         return mime;
  72     }
  73
  74     static SignalServiceAttachmentStream createAttachment(File attachmentFile) throws IOException {
  75         InputStream attachmentStream = new FileInputStream(attachmentFile);
  76         final long attachmentSize = attachmentFile.length();
  77         final String mime = getFileMimeType(attachmentFile);
  78         // TODO mabybe add a parameter to set the voiceNote, preview, width, height and caption option
  79         Optional<byte[]> preview = Optional.absent();
  80         Optional<String> caption = Optional.absent();
  81         Optional<String> blurHash = Optional.absent();
  82         return new SignalServiceAttachmentStream(attachmentStream, mime, attachmentSize, Optional.of(attachmentFile.getName()), false, preview, 0, 0, caption, blurHash, null, null);
  83     }
  84
  85     static StreamDetails createStreamDetailsFromFile(File file) throws IOException {
  86         InputStream stream = new FileInputStream(file);
  87         final long size = file.length();
  88         String mime = Files.probeContentType(file.toPath());
  89         if (mime == null) {
  90             mime = "application/octet-stream";
  91         }
  92         return new StreamDetails(stream, mime, size);
  93     }
  94
  95     static CertificateValidator getCertificateValidator() {
  96         try {
  97             ECPublicKey unidentifiedSenderTrustRoot = Curve.decodePoint(Base64.decode(BaseConfig.UNIDENTIFIED_SENDER_TRUST_ROOT), 0);
  98             return new CertificateValidator(unidentifiedSenderTrustRoot);
  99         } catch (InvalidKeyException | IOException e) {
 100             throw new AssertionError(e);
 101         }
 102     }
 103
 104     private static Map<String, String> getQueryMap(String query) {
 105         String[] params = query.split("&");
 106         Map<String, String> map = new HashMap<>();
 107         for (String param : params) {
 108             String name = null;
 109             final String[] paramParts = param.split("=");
 110             try {
 111                 name = URLDecoder.decode(paramParts[0], "utf-8");
 112             } catch (UnsupportedEncodingException e) {
 113                 // Impossible
 114             }
 115             String value = null;
 116             try {
 117                 value = URLDecoder.decode(paramParts[1], "utf-8");
 118             } catch (UnsupportedEncodingException e) {
 119                 // Impossible
 120             }
 121             map.put(name, value);
 122         }
 123         return map;
 124     }
 125
 126     static String createDeviceLinkUri(DeviceLinkInfo info) {
 127         try {
 128             return "tsdevice:/?uuid=" + URLEncoder.encode(info.deviceIdentifier, "utf-8") + "&pub_key=" + URLEncoder.encode(Base64.encodeBytesWithoutPadding(info.deviceKey.serialize()), "utf-8");
 129         } catch (UnsupportedEncodingException e) {
 130             // Shouldn't happen
 131             return null;
 132         }
 133     }
 134
 135     static DeviceLinkInfo parseDeviceLinkUri(URI linkUri) throws IOException, InvalidKeyException {
 136         Map<String, String> query = getQueryMap(linkUri.getRawQuery());
 137         String deviceIdentifier = query.get("uuid");
 138         String publicKeyEncoded = query.get("pub_key");
 139
 140         if (isEmpty(deviceIdentifier) || isEmpty(publicKeyEncoded)) {
 141             throw new RuntimeException("Invalid device link uri");
 142         }
 143
 144         ECPublicKey deviceKey = Curve.decodePoint(Base64.decode(publicKeyEncoded), 0);
 145
 146         return new DeviceLinkInfo(deviceIdentifier, deviceKey);
 147     }
 148
 149     static String canonicalizeNumber(String number, String localNumber) throws InvalidNumberException {
 150         return PhoneNumberFormatter.formatNumber(number, localNumber);
 151     }
 152
 153     static SignalServiceEnvelope loadEnvelope(File file) throws IOException {
 154         try (FileInputStream f = new FileInputStream(file)) {
 155             DataInputStream in = new DataInputStream(f);
 156             int version = in.readInt();
 157             if (version > 2) {
 158                 return null;
 159             }
 160             int type = in.readInt();
 161             String source = in.readUTF();
 162             int sourceDevice = in.readInt();
 163             if (version == 1) {
 164                 // read legacy relay field
 165                 in.readUTF();
 166             }
 167             long timestamp = in.readLong();
 168             byte[] content = null;
 169             int contentLen = in.readInt();
 170             if (contentLen > 0) {
 171                 content = new byte[contentLen];
 172                 in.readFully(content);
 173             }
 174             byte[] legacyMessage = null;
 175             int legacyMessageLen = in.readInt();
 176             if (legacyMessageLen > 0) {
 177                 legacyMessage = new byte[legacyMessageLen];
 178                 in.readFully(legacyMessage);
 179             }
 180             long serverTimestamp = 0;
 181             String uuid = null;
 182             if (version == 2) {
 183                 serverTimestamp = in.readLong();
 184                 uuid = in.readUTF();
 185                 if ("".equals(uuid)) {
 186                     uuid = null;
 187                 }
 188             }
 189             return new SignalServiceEnvelope(type, Optional.of(new SignalServiceAddress(null, source)), sourceDevice, timestamp, legacyMessage, content, serverTimestamp, uuid);
 190         }
 191     }
 192
 193     static void storeEnvelope(SignalServiceEnvelope envelope, File file) throws IOException {
 194         try (FileOutputStream f = new FileOutputStream(file)) {
 195             try (DataOutputStream out = new DataOutputStream(f)) {
 196                 out.writeInt(2); // version
 197                 out.writeInt(envelope.getType());
 198                 out.writeUTF(envelope.getSourceE164().get());
 199                 out.writeInt(envelope.getSourceDevice());
 200                 out.writeLong(envelope.getTimestamp());
 201                 if (envelope.hasContent()) {
 202                     out.writeInt(envelope.getContent().length);
 203                     out.write(envelope.getContent());
 204                 } else {
 205                     out.writeInt(0);
 206                 }
 207                 if (envelope.hasLegacyMessage()) {
 208                     out.writeInt(envelope.getLegacyMessage().length);
 209                     out.write(envelope.getLegacyMessage());
 210                 } else {
 211                     out.writeInt(0);
 212                 }
 213                 out.writeLong(envelope.getServerTimestamp());
 214                 String uuid = envelope.getUuid();
 215                 out.writeUTF(uuid == null ? "" : uuid);
 216             }
 217         }
 218     }
 219
 220     static File retrieveAttachment(SignalServiceAttachmentStream stream, File outputFile) throws IOException {
 221         InputStream input = stream.getInputStream();
 222
 223         try (OutputStream output = new FileOutputStream(outputFile)) {
 224             byte[] buffer = new byte[4096];
 225             int read;
 226
 227             while ((read = input.read(buffer)) != -1) {
 228                 output.write(buffer, 0, read);
 229             }
 230         } catch (FileNotFoundException e) {
 231             e.printStackTrace();
 232             return null;
 233         }
 234         return outputFile;
 235     }
 236
 237     static String computeSafetyNumber(String ownUsername, IdentityKey ownIdentityKey, String theirUsername, IdentityKey theirIdentityKey) {
 238         // Version 1: E164 user
 239         // Version 2: UUID user
 240         Fingerprint fingerprint = new NumericFingerprintGenerator(5200).createFor(1, ownUsername.getBytes(), ownIdentityKey, theirUsername.getBytes(), theirIdentityKey);
 241         return fingerprint.getDisplayableFingerprint().getDisplayText();
 242     }
 243
 244     static class DeviceLinkInfo {
 245
 246         final String deviceIdentifier;
 247         final ECPublicKey deviceKey;
 248
 249         DeviceLinkInfo(final String deviceIdentifier, final ECPublicKey deviceKey) {
 250             this.deviceIdentifier = deviceIdentifier;
 251             this.deviceKey = deviceKey;
 252         }
 253     }
 254 }