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[signal-cli] / lib / src / main / java / org / asamk / signal / manager / util / Utils.java
1 package org.asamk.signal.manager.util;
2
3 import com.fasterxml.jackson.databind.JsonNode;
4
5 import org.whispersystems.libsignal.IdentityKey;
6 import org.whispersystems.libsignal.fingerprint.Fingerprint;
7 import org.whispersystems.libsignal.fingerprint.NumericFingerprintGenerator;
8 import org.whispersystems.signalservice.api.push.SignalServiceAddress;
9 import org.whispersystems.signalservice.api.util.StreamDetails;
10 import org.whispersystems.signalservice.api.util.UuidUtil;
11
12 import java.io.BufferedInputStream;
13 import java.io.File;
14 import java.io.FileInputStream;
15 import java.io.IOException;
16 import java.io.InputStream;
17 import java.io.InvalidObjectException;
18 import java.net.URLConnection;
19 import java.nio.file.Files;
20
21 public class Utils {
22
23 public static String getFileMimeType(File file, String defaultMimeType) throws IOException {
24 String mime = Files.probeContentType(file.toPath());
25 if (mime == null) {
26 try (InputStream bufferedStream = new BufferedInputStream(new FileInputStream(file))) {
27 mime = URLConnection.guessContentTypeFromStream(bufferedStream);
28 }
29 }
30 if (mime == null) {
31 return defaultMimeType;
32 }
33 return mime;
34 }
35
36 public static StreamDetails createStreamDetailsFromFile(File file) throws IOException {
37 InputStream stream = new FileInputStream(file);
38 final long size = file.length();
39 final String mime = getFileMimeType(file, "application/octet-stream");
40 return new StreamDetails(stream, mime, size);
41 }
42
43 public static String computeSafetyNumber(
44 boolean isUuidCapable,
45 SignalServiceAddress ownAddress,
46 IdentityKey ownIdentityKey,
47 SignalServiceAddress theirAddress,
48 IdentityKey theirIdentityKey
49 ) {
50 int version;
51 byte[] ownId;
52 byte[] theirId;
53
54 if (isUuidCapable && ownAddress.getUuid().isPresent() && theirAddress.getUuid().isPresent()) {
55 // Version 2: UUID user
56 version = 2;
57 ownId = UuidUtil.toByteArray(ownAddress.getUuid().get());
58 theirId = UuidUtil.toByteArray(theirAddress.getUuid().get());
59 } else {
60 // Version 1: E164 user
61 version = 1;
62 if (!ownAddress.getNumber().isPresent() || !theirAddress.getNumber().isPresent()) {
63 return "INVALID ID";
64 }
65 ownId = ownAddress.getNumber().get().getBytes();
66 theirId = theirAddress.getNumber().get().getBytes();
67 }
68
69 Fingerprint fingerprint = new NumericFingerprintGenerator(5200).createFor(version,
70 ownId,
71 ownIdentityKey,
72 theirId,
73 theirIdentityKey);
74 return fingerprint.getDisplayableFingerprint().getDisplayText();
75 }
76
77 public static SignalServiceAddress getSignalServiceAddressFromIdentifier(final String identifier) {
78 if (UuidUtil.isUuid(identifier)) {
79 return new SignalServiceAddress(UuidUtil.parseOrNull(identifier), null);
80 } else {
81 return new SignalServiceAddress(null, identifier);
82 }
83 }
84
85 public static JsonNode getNotNullNode(JsonNode parent, String name) throws InvalidObjectException {
86 JsonNode node = parent.get(name);
87 if (node == null || node.isNull()) {
88 throw new InvalidObjectException(String.format("Incorrect file format: expected parameter %s not found ",
89 name));
90 }
91
92 return node;
93 }
94 }