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.signalservice.internal.util.Base64;
  20
  21 import java.io.DataInputStream;
  22 import java.io.DataOutputStream;
  23 import java.io.File;
  24 import java.io.FileInputStream;
  25 import java.io.FileNotFoundException;
  26 import java.io.FileOutputStream;
  27 import java.io.IOException;
  28 import java.io.InputStream;
  29 import java.io.OutputStream;
  30 import java.io.UnsupportedEncodingException;
  31 import java.net.URI;
  32 import java.net.URLDecoder;
  33 import java.net.URLEncoder;
  34 import java.nio.file.Files;
  35 import java.util.ArrayList;
  36 import java.util.Collection;
  37 import java.util.HashMap;
  38 import java.util.HashSet;
  39 import java.util.List;
  40 import java.util.Map;
  41 import java.util.Set;
  42
  43 import static org.whispersystems.signalservice.internal.util.Util.isEmpty;
  44
  45 class Utils {
  46
  47     static List<SignalServiceAttachment> getSignalServiceAttachments(List<String> attachments) throws AttachmentInvalidException {
  48         List<SignalServiceAttachment> SignalServiceAttachments = null;
  49         if (attachments != null) {
  50             SignalServiceAttachments = new ArrayList<>(attachments.size());
  51             for (String attachment : attachments) {
  52                 try {
  53                     SignalServiceAttachments.add(createAttachment(new File(attachment)));
  54                 } catch (IOException e) {
  55                     throw new AttachmentInvalidException(attachment, e);
  56                 }
  57             }
  58         }
  59         return SignalServiceAttachments;
  60     }
  61
  62     static SignalServiceAttachmentStream createAttachment(File attachmentFile) throws IOException {
  63         InputStream attachmentStream = new FileInputStream(attachmentFile);
  64         final long attachmentSize = attachmentFile.length();
  65         String mime = Files.probeContentType(attachmentFile.toPath());
  66         if (mime == null) {
  67             mime = "application/octet-stream";
  68         }
  69         // TODO mabybe add a parameter to set the voiceNote, preview, width, height and caption option
  70         Optional<byte[]> preview = Optional.absent();
  71         Optional<String> caption = Optional.absent();
  72         return new SignalServiceAttachmentStream(attachmentStream, mime, attachmentSize, Optional.of(attachmentFile.getName()), false, preview, 0, 0, caption, null);
  73     }
  74
  75     static StreamDetails createStreamDetailsFromFile(File file) throws IOException {
  76         InputStream stream = new FileInputStream(file);
  77         final long size = file.length();
  78         String mime = Files.probeContentType(file.toPath());
  79         if (mime == null) {
  80             mime = "application/octet-stream";
  81         }
  82         return new StreamDetails(stream, mime, size);
  83     }
  84
  85     static CertificateValidator getCertificateValidator() {
  86         try {
  87             ECPublicKey unidentifiedSenderTrustRoot = Curve.decodePoint(Base64.decode(BaseConfig.UNIDENTIFIED_SENDER_TRUST_ROOT), 0);
  88             return new CertificateValidator(unidentifiedSenderTrustRoot);
  89         } catch (InvalidKeyException | IOException e) {
  90             throw new AssertionError(e);
  91         }
  92     }
  93
  94     private static Map<String, String> getQueryMap(String query) {
  95         String[] params = query.split("&");
  96         Map<String, String> map = new HashMap<>();
  97         for (String param : params) {
  98             String name = null;
  99             final String[] paramParts = param.split("=");
 100             try {
 101                 name = URLDecoder.decode(paramParts[0], "utf-8");
 102             } catch (UnsupportedEncodingException e) {
 103                 // Impossible
 104             }
 105             String value = null;
 106             try {
 107                 value = URLDecoder.decode(paramParts[1], "utf-8");
 108             } catch (UnsupportedEncodingException e) {
 109                 // Impossible
 110             }
 111             map.put(name, value);
 112         }
 113         return map;
 114     }
 115
 116     static String createDeviceLinkUri(DeviceLinkInfo info) {
 117         try {
 118             return "tsdevice:/?uuid=" + URLEncoder.encode(info.deviceIdentifier, "utf-8") + "&pub_key=" + URLEncoder.encode(Base64.encodeBytesWithoutPadding(info.deviceKey.serialize()), "utf-8");
 119         } catch (UnsupportedEncodingException e) {
 120             // Shouldn't happen
 121             return null;
 122         }
 123     }
 124
 125     static DeviceLinkInfo parseDeviceLinkUri(URI linkUri) throws IOException, InvalidKeyException {
 126         Map<String, String> query = getQueryMap(linkUri.getRawQuery());
 127         String deviceIdentifier = query.get("uuid");
 128         String publicKeyEncoded = query.get("pub_key");
 129
 130         if (isEmpty(deviceIdentifier) || isEmpty(publicKeyEncoded)) {
 131             throw new RuntimeException("Invalid device link uri");
 132         }
 133
 134         ECPublicKey deviceKey = Curve.decodePoint(Base64.decode(publicKeyEncoded), 0);
 135
 136         return new DeviceLinkInfo(deviceIdentifier, deviceKey);
 137     }
 138
 139     static Set<SignalServiceAddress> getSignalServiceAddresses(Collection<String> recipients, String localNumber) {
 140         Set<SignalServiceAddress> recipientsTS = new HashSet<>(recipients.size());
 141         for (String recipient : recipients) {
 142             try {
 143                 recipientsTS.add(getPushAddress(recipient, localNumber));
 144             } catch (InvalidNumberException e) {
 145                 System.err.println("Failed to add recipient \"" + recipient + "\": " + e.getMessage());
 146                 System.err.println("Aborting sending.");
 147                 return null;
 148             }
 149         }
 150         return recipientsTS;
 151     }
 152
 153     static String canonicalizeNumber(String number, String localNumber) throws InvalidNumberException {
 154         return PhoneNumberFormatter.formatNumber(number, localNumber);
 155     }
 156
 157     private static SignalServiceAddress getPushAddress(String number, String localNumber) throws InvalidNumberException {
 158         String e164number = canonicalizeNumber(number, localNumber);
 159         return new SignalServiceAddress(e164number);
 160     }
 161
 162     static SignalServiceEnvelope loadEnvelope(File file) throws IOException {
 163         try (FileInputStream f = new FileInputStream(file)) {
 164             DataInputStream in = new DataInputStream(f);
 165             int version = in.readInt();
 166             if (version > 2) {
 167                 return null;
 168             }
 169             int type = in.readInt();
 170             String source = in.readUTF();
 171             int sourceDevice = in.readInt();
 172             if (version == 1) {
 173                 // read legacy relay field
 174                 in.readUTF();
 175             }
 176             long timestamp = in.readLong();
 177             byte[] content = null;
 178             int contentLen = in.readInt();
 179             if (contentLen > 0) {
 180                 content = new byte[contentLen];
 181                 in.readFully(content);
 182             }
 183             byte[] legacyMessage = null;
 184             int legacyMessageLen = in.readInt();
 185             if (legacyMessageLen > 0) {
 186                 legacyMessage = new byte[legacyMessageLen];
 187                 in.readFully(legacyMessage);
 188             }
 189             long serverTimestamp = 0;
 190             String uuid = null;
 191             if (version == 2) {
 192                 serverTimestamp = in.readLong();
 193                 uuid = in.readUTF();
 194                 if ("".equals(uuid)) {
 195                     uuid = null;
 196                 }
 197             }
 198             return new SignalServiceEnvelope(type, source, sourceDevice, timestamp, legacyMessage, content, serverTimestamp, uuid);
 199         }
 200     }
 201
 202     static void storeEnvelope(SignalServiceEnvelope envelope, File file) throws IOException {
 203         try (FileOutputStream f = new FileOutputStream(file)) {
 204             try (DataOutputStream out = new DataOutputStream(f)) {
 205                 out.writeInt(2); // version
 206                 out.writeInt(envelope.getType());
 207                 out.writeUTF(envelope.getSource());
 208                 out.writeInt(envelope.getSourceDevice());
 209                 out.writeLong(envelope.getTimestamp());
 210                 if (envelope.hasContent()) {
 211                     out.writeInt(envelope.getContent().length);
 212                     out.write(envelope.getContent());
 213                 } else {
 214                     out.writeInt(0);
 215                 }
 216                 if (envelope.hasLegacyMessage()) {
 217                     out.writeInt(envelope.getLegacyMessage().length);
 218                     out.write(envelope.getLegacyMessage());
 219                 } else {
 220                     out.writeInt(0);
 221                 }
 222                 out.writeLong(envelope.getServerTimestamp());
 223                 String uuid = envelope.getUuid();
 224                 out.writeUTF(uuid == null ? "" : uuid);
 225             }
 226         }
 227     }
 228
 229     static File retrieveAttachment(SignalServiceAttachmentStream stream, File outputFile) throws IOException {
 230         InputStream input = stream.getInputStream();
 231
 232         try (OutputStream output = new FileOutputStream(outputFile)) {
 233             byte[] buffer = new byte[4096];
 234             int read;
 235
 236             while ((read = input.read(buffer)) != -1) {
 237                 output.write(buffer, 0, read);
 238             }
 239         } catch (FileNotFoundException e) {
 240             e.printStackTrace();
 241             return null;
 242         }
 243         return outputFile;
 244     }
 245
 246     static String computeSafetyNumber(String ownUsername, IdentityKey ownIdentityKey, String theirUsername, IdentityKey theirIdentityKey) {
 247         Fingerprint fingerprint = new NumericFingerprintGenerator(5200).createFor(ownUsername, ownIdentityKey, theirUsername, theirIdentityKey);
 248         return fingerprint.getDisplayableFingerprint().getDisplayText();
 249     }
 250
 251     static class DeviceLinkInfo {
 252
 253         final String deviceIdentifier;
 254         final ECPublicKey deviceKey;
 255
 256         DeviceLinkInfo(final String deviceIdentifier, final ECPublicKey deviceKey) {
 257             this.deviceIdentifier = deviceIdentifier;
 258             this.deviceKey = deviceKey;
 259         }
 260     }
 261 }