]> nmode's Git Repositories - signal-cli/blobdiff - src/main/java/org/asamk/signal/dbus/DbusSignalImpl.java
Implement Dbus setPin and removePin (#733)
[signal-cli] / src / main / java / org / asamk / signal / dbus / DbusSignalImpl.java
index 6b22029b2fc0434f05c0465f383116aabc5a6f6e..44250d5b136ca4205602ca9643b2381f2b56fa4d 100644 (file)
@@ -4,32 +4,52 @@ import org.asamk.Signal;
 import org.asamk.signal.BaseConfig;
 import org.asamk.signal.manager.AttachmentInvalidException;
 import org.asamk.signal.manager.Manager;
+import org.asamk.signal.manager.NotMasterDeviceException;
+import org.asamk.signal.manager.UntrustedIdentityException;
+import org.asamk.signal.manager.api.Message;
+import org.asamk.signal.manager.api.RecipientIdentifier;
+import org.asamk.signal.manager.api.TypingAction;
 import org.asamk.signal.manager.groups.GroupId;
 import org.asamk.signal.manager.groups.GroupInviteLinkUrl;
 import org.asamk.signal.manager.groups.GroupNotFoundException;
+import org.asamk.signal.manager.groups.GroupSendingNotAllowedException;
+import org.asamk.signal.manager.groups.LastGroupAdminException;
 import org.asamk.signal.manager.groups.NotAGroupMemberException;
+import org.asamk.signal.manager.storage.identities.IdentityInfo;
 import org.asamk.signal.util.ErrorUtils;
+import org.asamk.signal.util.Util;
+
 import org.freedesktop.dbus.exceptions.DBusExecutionException;
+import org.whispersystems.libsignal.util.Pair;
 import org.whispersystems.libsignal.util.guava.Optional;
 import org.whispersystems.signalservice.api.groupsv2.GroupLinkNotActiveException;
 import org.whispersystems.signalservice.api.messages.SendMessageResult;
-import org.whispersystems.signalservice.api.push.SignalServiceAddress;
+import org.whispersystems.signalservice.api.push.exceptions.UnregisteredUserException;
 import org.whispersystems.signalservice.api.util.InvalidNumberException;
+import org.whispersystems.signalservice.internal.contacts.crypto.UnauthenticatedResponseException;
 
 import java.io.File;
 import java.io.IOException;
 import java.util.ArrayList;
+import java.util.Collection;
+import java.util.HashSet;
 import java.util.List;
+import java.util.Map;
 import java.util.Objects;
+import java.util.Set;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
 
+import static org.asamk.signal.util.Util.getLegacyIdentifier;
+
 public class DbusSignalImpl implements Signal {
 
     private final Manager m;
+    private final String objectPath;
 
-    public DbusSignalImpl(final Manager m) {
+    public DbusSignalImpl(final Manager m, final String objectPath) {
         this.m = m;
+        this.objectPath = objectPath;
     }
 
     @Override
@@ -39,7 +59,7 @@ public class DbusSignalImpl implements Signal {
 
     @Override
     public String getObjectPath() {
-        return null;
+        return objectPath;
     }
 
     @Override
@@ -49,57 +69,22 @@ public class DbusSignalImpl implements Signal {
         return sendMessage(message, attachments, recipients);
     }
 
-    private static void checkSendMessageResult(long timestamp, SendMessageResult result) throws DBusExecutionException {
-        var error = ErrorUtils.getErrorMessageFromSendMessageResult(result);
-
-        if (error == null) {
-            return;
-        }
-
-        final var message = timestamp + "\nFailed to send message:\n" + error + '\n';
-
-        if (result.getIdentityFailure() != null) {
-            throw new Error.UntrustedIdentity(message);
-        } else {
-            throw new Error.Failure(message);
-        }
-    }
-
-    private static void checkSendMessageResults(
-            long timestamp, List<SendMessageResult> results
-    ) throws DBusExecutionException {
-        if (results.size() == 1) {
-            checkSendMessageResult(timestamp, results.get(0));
-            return;
-        }
-
-        var errors = ErrorUtils.getErrorMessagesFromSendMessageResults(results);
-        if (errors.size() == 0) {
-            return;
-        }
-
-        var message = new StringBuilder();
-        message.append(timestamp).append('\n');
-        message.append("Failed to send (some) messages:\n");
-        for (var error : errors) {
-            message.append(error).append('\n');
-        }
-
-        throw new Error.Failure(message.toString());
-    }
-
     @Override
     public long sendMessage(final String message, final List<String> attachments, final List<String> recipients) {
         try {
-            final var results = m.sendMessage(message, attachments, recipients);
-            checkSendMessageResults(results.first(), results.second());
-            return results.first();
-        } catch (InvalidNumberException e) {
-            throw new Error.InvalidNumber(e.getMessage());
+            final var results = m.sendMessage(new Message(message, attachments),
+                    getSingleRecipientIdentifiers(recipients, m.getUsername()).stream()
+                            .map(RecipientIdentifier.class::cast)
+                            .collect(Collectors.toSet()));
+
+            checkSendMessageResults(results.getTimestamp(), results.getResults());
+            return results.getTimestamp();
         } catch (AttachmentInvalidException e) {
             throw new Error.AttachmentInvalid(e.getMessage());
         } catch (IOException e) {
             throw new Error.Failure(e.getMessage());
+        } catch (GroupNotFoundException | NotAGroupMemberException | GroupSendingNotAllowedException e) {
+            throw new Error.GroupNotFound(e.getMessage());
         }
     }
 
@@ -117,13 +102,16 @@ public class DbusSignalImpl implements Signal {
             final long targetSentTimestamp, final List<String> recipients
     ) {
         try {
-            final var results = m.sendRemoteDeleteMessage(targetSentTimestamp, recipients);
-            checkSendMessageResults(results.first(), results.second());
-            return results.first();
+            final var results = m.sendRemoteDeleteMessage(targetSentTimestamp,
+                    getSingleRecipientIdentifiers(recipients, m.getUsername()).stream()
+                            .map(RecipientIdentifier.class::cast)
+                            .collect(Collectors.toSet()));
+            checkSendMessageResults(results.getTimestamp(), results.getResults());
+            return results.getTimestamp();
         } catch (IOException e) {
             throw new Error.Failure(e.getMessage());
-        } catch (InvalidNumberException e) {
-            throw new Error.InvalidNumber(e.getMessage());
+        } catch (GroupNotFoundException | NotAGroupMemberException | GroupSendingNotAllowedException e) {
+            throw new Error.GroupNotFound(e.getMessage());
         }
     }
 
@@ -132,19 +120,24 @@ public class DbusSignalImpl implements Signal {
             final long targetSentTimestamp, final byte[] groupId
     ) {
         try {
-            final var results = m.sendGroupRemoteDeleteMessage(targetSentTimestamp, GroupId.unknownVersion(groupId));
-            checkSendMessageResults(results.first(), results.second());
-            return results.first();
+            final var results = m.sendRemoteDeleteMessage(targetSentTimestamp,
+                    Set.of(new RecipientIdentifier.Group(getGroupId(groupId))));
+            checkSendMessageResults(results.getTimestamp(), results.getResults());
+            return results.getTimestamp();
         } catch (IOException e) {
             throw new Error.Failure(e.getMessage());
-        } catch (GroupNotFoundException | NotAGroupMemberException e) {
+        } catch (GroupNotFoundException | NotAGroupMemberException | GroupSendingNotAllowedException e) {
             throw new Error.GroupNotFound(e.getMessage());
         }
     }
 
     @Override
     public long sendMessageReaction(
-            final String emoji, final boolean remove, final String targetAuthor, final long targetSentTimestamp, final String recipient
+            final String emoji,
+            final boolean remove,
+            final String targetAuthor,
+            final long targetSentTimestamp,
+            final String recipient
     ) {
         var recipients = new ArrayList<String>(1);
         recipients.add(recipient);
@@ -153,16 +146,59 @@ public class DbusSignalImpl implements Signal {
 
     @Override
     public long sendMessageReaction(
-            final String emoji, final boolean remove, final String targetAuthor, final long targetSentTimestamp, final List<String> recipients
+            final String emoji,
+            final boolean remove,
+            final String targetAuthor,
+            final long targetSentTimestamp,
+            final List<String> recipients
     ) {
         try {
-            final var results = m.sendMessageReaction(emoji, remove, targetAuthor, targetSentTimestamp, recipients);
-            checkSendMessageResults(results.first(), results.second());
-            return results.first();
-        } catch (InvalidNumberException e) {
-            throw new Error.InvalidNumber(e.getMessage());
+            final var results = m.sendMessageReaction(emoji,
+                    remove,
+                    getSingleRecipientIdentifier(targetAuthor, m.getUsername()),
+                    targetSentTimestamp,
+                    getSingleRecipientIdentifiers(recipients, m.getUsername()).stream()
+                            .map(RecipientIdentifier.class::cast)
+                            .collect(Collectors.toSet()));
+            checkSendMessageResults(results.getTimestamp(), results.getResults());
+            return results.getTimestamp();
         } catch (IOException e) {
             throw new Error.Failure(e.getMessage());
+        } catch (GroupNotFoundException | NotAGroupMemberException | GroupSendingNotAllowedException e) {
+            throw new Error.GroupNotFound(e.getMessage());
+        }
+    }
+
+    @Override
+    public void sendTyping(
+            final String recipient, final boolean stop
+    ) throws Error.Failure, Error.GroupNotFound, Error.UntrustedIdentity {
+        try {
+            var recipients = new ArrayList<String>(1);
+            recipients.add(recipient);
+            m.sendTypingMessage(stop ? TypingAction.STOP : TypingAction.START,
+                    getSingleRecipientIdentifiers(recipients, m.getUsername()).stream()
+                            .map(RecipientIdentifier.class::cast)
+                            .collect(Collectors.toSet()));
+        } catch (IOException e) {
+            throw new Error.Failure(e.getMessage());
+        } catch (GroupNotFoundException | NotAGroupMemberException | GroupSendingNotAllowedException e) {
+            throw new Error.GroupNotFound(e.getMessage());
+        } catch (UntrustedIdentityException e) {
+            throw new Error.UntrustedIdentity(e.getMessage());
+        }
+    }
+
+    @Override
+    public void sendReadReceipt(
+            final String recipient, final List<Long> timestamps
+    ) throws Error.Failure, Error.UntrustedIdentity {
+        try {
+            m.sendReadReceipt(getSingleRecipientIdentifier(recipient, m.getUsername()), timestamps);
+        } catch (IOException e) {
+            throw new Error.Failure(e.getMessage());
+        } catch (UntrustedIdentityException e) {
+            throw new Error.UntrustedIdentity(e.getMessage());
         }
     }
 
@@ -171,37 +207,39 @@ public class DbusSignalImpl implements Signal {
             final String message, final List<String> attachments
     ) throws Error.AttachmentInvalid, Error.Failure, Error.UntrustedIdentity {
         try {
-            final var results = m.sendSelfMessage(message, attachments);
-            checkSendMessageResult(results.first(), results.second());
-            return results.first();
+            final var results = m.sendMessage(new Message(message, attachments),
+                    Set.of(new RecipientIdentifier.NoteToSelf()));
+            checkSendMessageResults(results.getTimestamp(), results.getResults());
+            return results.getTimestamp();
         } catch (AttachmentInvalidException e) {
             throw new Error.AttachmentInvalid(e.getMessage());
         } catch (IOException e) {
             throw new Error.Failure(e.getMessage());
+        } catch (GroupNotFoundException | NotAGroupMemberException | GroupSendingNotAllowedException e) {
+            throw new Error.GroupNotFound(e.getMessage());
         }
     }
 
     @Override
     public void sendEndSessionMessage(final List<String> recipients) {
         try {
-            final var results = m.sendEndSessionMessage(recipients);
-            checkSendMessageResults(results.first(), results.second());
+            final var results = m.sendEndSessionMessage(getSingleRecipientIdentifiers(recipients, m.getUsername()));
+            checkSendMessageResults(results.getTimestamp(), results.getResults());
         } catch (IOException e) {
             throw new Error.Failure(e.getMessage());
-        } catch (InvalidNumberException e) {
-            throw new Error.InvalidNumber(e.getMessage());
         }
     }
 
     @Override
     public long sendGroupMessage(final String message, final List<String> attachments, final byte[] groupId) {
         try {
-            var results = m.sendGroupMessage(message, attachments, GroupId.unknownVersion(groupId));
-            checkSendMessageResults(results.first(), results.second());
-            return results.first();
+            var results = m.sendMessage(new Message(message, attachments),
+                    Set.of(new RecipientIdentifier.Group(getGroupId(groupId))));
+            checkSendMessageResults(results.getTimestamp(), results.getResults());
+            return results.getTimestamp();
         } catch (IOException e) {
             throw new Error.Failure(e.getMessage());
-        } catch (GroupNotFoundException | NotAGroupMemberException e) {
+        } catch (GroupNotFoundException | NotAGroupMemberException | GroupSendingNotAllowedException e) {
             throw new Error.GroupNotFound(e.getMessage());
         } catch (AttachmentInvalidException e) {
             throw new Error.AttachmentInvalid(e.getMessage());
@@ -210,17 +248,23 @@ public class DbusSignalImpl implements Signal {
 
     @Override
     public long sendGroupMessageReaction(
-            final String emoji, final boolean remove, final String targetAuthor, final long targetSentTimestamp, final byte[] groupId
+            final String emoji,
+            final boolean remove,
+            final String targetAuthor,
+            final long targetSentTimestamp,
+            final byte[] groupId
     ) {
         try {
-            final var results = m.sendGroupMessageReaction(emoji, remove, targetAuthor, targetSentTimestamp, GroupId.unknownVersion(groupId));
-            checkSendMessageResults(results.first(), results.second());
-            return results.first();
+            final var results = m.sendMessageReaction(emoji,
+                    remove,
+                    getSingleRecipientIdentifier(targetAuthor, m.getUsername()),
+                    targetSentTimestamp,
+                    Set.of(new RecipientIdentifier.Group(getGroupId(groupId))));
+            checkSendMessageResults(results.getTimestamp(), results.getResults());
+            return results.getTimestamp();
         } catch (IOException e) {
             throw new Error.Failure(e.getMessage());
-        } catch (InvalidNumberException e) {
-            throw new Error.InvalidNumber(e.getMessage());
-        } catch (GroupNotFoundException | NotAGroupMemberException e) {
+        } catch (GroupNotFoundException | NotAGroupMemberException | GroupSendingNotAllowedException e) {
             throw new Error.GroupNotFound(e.getMessage());
         }
     }
@@ -229,37 +273,39 @@ public class DbusSignalImpl implements Signal {
     // the profile name
     @Override
     public String getContactName(final String number) {
-        try {
-            return m.getContactOrProfileName(number);
-        } catch (Exception e) {
-            throw new Error.InvalidNumber(e.getMessage());
-        }
+        return m.getContactOrProfileName(getSingleRecipientIdentifier(number, m.getUsername()));
     }
 
     @Override
     public void setContactName(final String number, final String name) {
         try {
-            m.setContactName(number, name);
-        } catch (InvalidNumberException e) {
-            throw new Error.InvalidNumber(e.getMessage());
+            m.setContactName(getSingleRecipientIdentifier(number, m.getUsername()), name);
+        } catch (NotMasterDeviceException e) {
+            throw new Error.Failure("This command doesn't work on linked devices.");
+        } catch (UnregisteredUserException e) {
+            throw new Error.Failure("Contact is not registered.");
         }
     }
 
     @Override
     public void setContactBlocked(final String number, final boolean blocked) {
         try {
-            m.setContactBlocked(number, blocked);
-        } catch (InvalidNumberException e) {
-            throw new Error.InvalidNumber(e.getMessage());
+            m.setContactBlocked(getSingleRecipientIdentifier(number, m.getUsername()), blocked);
+        } catch (NotMasterDeviceException e) {
+            throw new Error.Failure("This command doesn't work on linked devices.");
+        } catch (IOException e) {
+            throw new Error.Failure(e.getMessage());
         }
     }
 
     @Override
     public void setGroupBlocked(final byte[] groupId, final boolean blocked) {
         try {
-            m.setGroupBlocked(GroupId.unknownVersion(groupId), blocked);
+            m.setGroupBlocked(getGroupId(groupId), blocked);
         } catch (GroupNotFoundException e) {
             throw new Error.GroupNotFound(e.getMessage());
+        } catch (IOException e) {
+            throw new Error.Failure(e.getMessage());
         }
     }
 
@@ -275,7 +321,7 @@ public class DbusSignalImpl implements Signal {
 
     @Override
     public String getGroupName(final byte[] groupId) {
-        var group = m.getGroup(GroupId.unknownVersion(groupId));
+        var group = m.getGroup(getGroupId(groupId));
         if (group == null) {
             return "";
         } else {
@@ -285,14 +331,14 @@ public class DbusSignalImpl implements Signal {
 
     @Override
     public List<String> getGroupMembers(final byte[] groupId) {
-        var group = m.getGroup(GroupId.unknownVersion(groupId));
+        var group = m.getGroup(getGroupId(groupId));
         if (group == null) {
             return List.of();
         } else {
             return group.getMembers()
                     .stream()
                     .map(m::resolveSignalServiceAddress)
-                    .map(SignalServiceAddress::getLegacyIdentifier)
+                    .map(Util::getLegacyIdentifier)
                     .collect(Collectors.toList());
         }
     }
@@ -306,24 +352,38 @@ public class DbusSignalImpl implements Signal {
             if (name.isEmpty()) {
                 name = null;
             }
-            if (members.isEmpty()) {
-                members = null;
-            }
             if (avatar.isEmpty()) {
                 avatar = null;
             }
-            final var results = m.updateGroup(groupId == null ? null : GroupId.unknownVersion(groupId),
-                    name,
-                    members,
-                    avatar == null ? null : new File(avatar));
-            checkSendMessageResults(0, results.second());
-            return results.first().serialize();
+            final var memberIdentifiers = getSingleRecipientIdentifiers(members, m.getUsername());
+            if (groupId == null) {
+                final var results = m.createGroup(name, memberIdentifiers, avatar == null ? null : new File(avatar));
+                checkSendMessageResults(results.second().getTimestamp(), results.second().getResults());
+                return results.first().serialize();
+            } else {
+                final var results = m.updateGroup(getGroupId(groupId),
+                        name,
+                        null,
+                        memberIdentifiers,
+                        null,
+                        null,
+                        null,
+                        false,
+                        null,
+                        null,
+                        null,
+                        avatar == null ? null : new File(avatar),
+                        null,
+                        null);
+                if (results != null) {
+                    checkSendMessageResults(results.getTimestamp(), results.getResults());
+                }
+                return groupId;
+            }
         } catch (IOException e) {
             throw new Error.Failure(e.getMessage());
-        } catch (GroupNotFoundException | NotAGroupMemberException e) {
+        } catch (GroupNotFoundException | NotAGroupMemberException | GroupSendingNotAllowedException e) {
             throw new Error.GroupNotFound(e.getMessage());
-        } catch (InvalidNumberException e) {
-            throw new Error.InvalidNumber(e.getMessage());
         } catch (AttachmentInvalidException e) {
             throw new Error.AttachmentInvalid(e.getMessage());
         }
@@ -349,12 +409,34 @@ public class DbusSignalImpl implements Signal {
             Optional<File> avatarFile = removeAvatar
                     ? Optional.absent()
                     : avatarPath == null ? null : Optional.of(new File(avatarPath));
-            m.setProfile(name, about, aboutEmoji, avatarFile);
+            m.setProfile(name, null, about, aboutEmoji, avatarFile);
         } catch (IOException e) {
             throw new Error.Failure(e.getMessage());
         }
     }
 
+    @Override
+    public void removePin() {
+        try {
+            m.setRegistrationLockPin(Optional.absent());
+        } catch (UnauthenticatedResponseException e) {
+            throw new Error.Failure("Remove pin failed with unauthenticated response: " + e.getMessage());
+        } catch (IOException e) {
+            throw new Error.Failure("Remove pin error: " + e.getMessage());
+        }
+    }
+
+    @Override
+    public void setPin(String registrationLockPin)  {
+        try {
+            m.setRegistrationLockPin(Optional.of(registrationLockPin));
+        } catch (UnauthenticatedResponseException e) {
+            throw new Error.Failure("Set pin error failed with unauthenticated response: " + e.getMessage());
+        } catch (IOException e) {
+            throw new Error.Failure("Set pin error: " + e.getMessage());
+        }
+    }
+
     // Provide option to query a version string in order to react on potential
     // future interface changes
     @Override
@@ -366,8 +448,10 @@ public class DbusSignalImpl implements Signal {
     // all numbers the system knows
     @Override
     public List<String> listNumbers() {
-        return Stream.concat(m.getIdentities().stream().map(i -> i.getAddress().getNumber().orNull()),
-                m.getContacts().stream().map(c -> c.number))
+        return Stream.concat(m.getIdentities().stream().map(IdentityInfo::getRecipientId),
+                m.getContacts().stream().map(Pair::first))
+                .map(m::resolveSignalServiceAddress)
+                .map(a -> a.getNumber().orNull())
                 .filter(Objects::nonNull)
                 .distinct()
                 .collect(Collectors.toList());
@@ -379,16 +463,17 @@ public class DbusSignalImpl implements Signal {
         var numbers = new ArrayList<String>();
         var contacts = m.getContacts();
         for (var c : contacts) {
-            if (c.name != null && c.name.equals(name)) {
-                numbers.add(c.number);
+            if (name.equals(c.second().getName())) {
+                numbers.add(getLegacyIdentifier(m.resolveSignalServiceAddress(c.first())));
             }
         }
         // Try profiles if no contact name was found
         for (var identity : m.getIdentities()) {
-            final var address = identity.getAddress();
+            final var recipientId = identity.getRecipientId();
+            final var address = m.resolveSignalServiceAddress(recipientId);
             var number = address.getNumber().orNull();
             if (number != null) {
-                var profile = m.getRecipientProfile(address);
+                var profile = m.getRecipientProfile(recipientId);
                 if (profile != null && profile.getDisplayName().equals(name)) {
                     numbers.add(number);
                 }
@@ -399,24 +484,25 @@ public class DbusSignalImpl implements Signal {
 
     @Override
     public void quitGroup(final byte[] groupId) {
-        var group = GroupId.unknownVersion(groupId);
+        var group = getGroupId(groupId);
         try {
-            m.sendQuitGroupMessage(group);
+            m.quitGroup(group, Set.of());
         } catch (GroupNotFoundException | NotAGroupMemberException e) {
             throw new Error.GroupNotFound(e.getMessage());
-        } catch (IOException e) {
+        } catch (IOException | LastGroupAdminException e) {
             throw new Error.Failure(e.getMessage());
         }
     }
 
     @Override
-    public void joinGroup(final String groupLink) {
+    public byte[] joinGroup(final String groupLink) {
         try {
             final var linkUrl = GroupInviteLinkUrl.fromUri(groupLink);
             if (linkUrl == null) {
                 throw new Error.Failure("Group link is invalid:");
             }
-            m.joinGroup(linkUrl);
+            final var result = m.joinGroup(linkUrl);
+            return result.first().serialize();
         } catch (GroupInviteLinkUrl.InvalidGroupLinkException | GroupLinkNotActiveException e) {
             throw new Error.Failure("Group link is invalid: " + e.getMessage());
         } catch (GroupInviteLinkUrl.UnknownGroupLinkVersionException e) {
@@ -428,18 +514,12 @@ public class DbusSignalImpl implements Signal {
 
     @Override
     public boolean isContactBlocked(final String number) {
-        var contacts = m.getContacts();
-        for (var c : contacts) {
-            if (c.number.equals(number)) {
-                return c.blocked;
-            }
-        }
-        return false;
+        return m.isContactBlocked(getSingleRecipientIdentifier(number, m.getUsername()));
     }
 
     @Override
     public boolean isGroupBlocked(final byte[] groupId) {
-        var group = m.getGroup(GroupId.unknownVersion(groupId));
+        var group = m.getGroup(getGroupId(groupId));
         if (group == null) {
             return false;
         } else {
@@ -449,11 +529,102 @@ public class DbusSignalImpl implements Signal {
 
     @Override
     public boolean isMember(final byte[] groupId) {
-        var group = m.getGroup(GroupId.unknownVersion(groupId));
+        var group = m.getGroup(getGroupId(groupId));
         if (group == null) {
             return false;
         } else {
-            return group.isMember(m.getSelfAddress());
+            return group.isMember(m.getSelfRecipientId());
+        }
+    }
+
+    private static void checkSendMessageResult(long timestamp, SendMessageResult result) throws DBusExecutionException {
+        var error = ErrorUtils.getErrorMessageFromSendMessageResult(result);
+
+        if (error == null) {
+            return;
+        }
+
+        final var message = timestamp + "\nFailed to send message:\n" + error + '\n';
+
+        if (result.getIdentityFailure() != null) {
+            throw new Error.UntrustedIdentity(message);
+        } else {
+            throw new Error.Failure(message);
+        }
+    }
+
+    private static void checkSendMessageResults(
+            long timestamp, Map<RecipientIdentifier, List<SendMessageResult>> results
+    ) throws DBusExecutionException {
+        final var sendMessageResults = results.values().stream().findFirst();
+        if (results.size() == 1 && sendMessageResults.get().size() == 1) {
+            checkSendMessageResult(timestamp, sendMessageResults.get().stream().findFirst().get());
+            return;
+        }
+
+        var errors = ErrorUtils.getErrorMessagesFromSendMessageResults(results);
+        if (errors.size() == 0) {
+            return;
+        }
+
+        var message = new StringBuilder();
+        message.append(timestamp).append('\n');
+        message.append("Failed to send (some) messages:\n");
+        for (var error : errors) {
+            message.append(error).append('\n');
+        }
+
+        throw new Error.Failure(message.toString());
+    }
+
+    private static void checkSendMessageResults(
+            long timestamp, Collection<SendMessageResult> results
+    ) throws DBusExecutionException {
+        if (results.size() == 1) {
+            checkSendMessageResult(timestamp, results.stream().findFirst().get());
+            return;
+        }
+
+        var errors = ErrorUtils.getErrorMessagesFromSendMessageResults(results);
+        if (errors.size() == 0) {
+            return;
+        }
+
+        var message = new StringBuilder();
+        message.append(timestamp).append('\n');
+        message.append("Failed to send (some) messages:\n");
+        for (var error : errors) {
+            message.append(error).append('\n');
+        }
+
+        throw new Error.Failure(message.toString());
+    }
+
+    private static Set<RecipientIdentifier.Single> getSingleRecipientIdentifiers(
+            final Collection<String> recipientStrings, final String localNumber
+    ) throws DBusExecutionException {
+        final var identifiers = new HashSet<RecipientIdentifier.Single>();
+        for (var recipientString : recipientStrings) {
+            identifiers.add(getSingleRecipientIdentifier(recipientString, localNumber));
+        }
+        return identifiers;
+    }
+
+    private static RecipientIdentifier.Single getSingleRecipientIdentifier(
+            final String recipientString, final String localNumber
+    ) throws DBusExecutionException {
+        try {
+            return RecipientIdentifier.Single.fromString(recipientString, localNumber);
+        } catch (InvalidNumberException e) {
+            throw new Error.InvalidNumber(e.getMessage());
+        }
+    }
+
+    private static GroupId getGroupId(byte[] groupId) throws DBusExecutionException {
+        try {
+            return GroupId.unknownVersion(groupId);
+        } catch (Throwable e) {
+            throw new Error.InvalidGroupId("Invalid group id: " + e.getMessage());
         }
     }
 }