nmode's Git Repositories - signal-cli/blob - lib/src/main/java/org/asamk/signal/manager/storage/recipients/MergeRecipientHelper.java

   1 package org.asamk.signal.manager.storage.recipients;
   2
   3 import org.asamk.signal.manager.api.Pair;
   4 import org.slf4j.Logger;
   5 import org.slf4j.LoggerFactory;
   6
   7 import java.sql.SQLException;
   8 import java.util.HashSet;
   9 import java.util.List;
  10 import java.util.Set;
  11 import java.util.stream.Collectors;
  12
  13 public class MergeRecipientHelper {
  14
  15     private static final Logger logger = LoggerFactory.getLogger(MergeRecipientHelper.class);
  16
  17     static Pair<RecipientId, List<RecipientId>> resolveRecipientTrustedLocked(
  18             Store store,
  19             RecipientAddress address
  20     ) throws SQLException {
  21         // address has at least one of serviceId/pni and optionally number/username
  22
  23         final var recipients = store.findAllByAddress(address);
  24
  25         if (recipients.isEmpty()) {
  26             logger.debug("Got new recipient, serviceId, PNI, number, username are unknown");
  27             return new Pair<>(store.addNewRecipient(address), List.of());
  28         }
  29
  30         if (recipients.size() == 1) {
  31             final var recipient = recipients.stream().findFirst().get();
  32             if (recipient.address().hasIdentifiersOf(address)) {
  33                 return new Pair<>(recipient.id(), List.of());
  34             }
  35
  36             if (recipient.address().aci().isEmpty() || (
  37                     address.aci().isEmpty() && (
  38                             address.pni().isEmpty() || recipient.address().pni().equals(address.pni())
  39                     )
  40             ) || recipient.address().aci().equals(address.aci())) {
  41                 logger.debug("Got existing recipient {}, updating with high trust address", recipient.id());
  42                 store.updateRecipientAddress(recipient.id(), address.withOtherIdentifiersFrom(recipient.address()));
  43                 return new Pair<>(recipient.id(), List.of());
  44             }
  45
  46             logger.debug(
  47                     "Got recipient {} existing with number/pni/username, but different aci, so stripping its number and adding new recipient",
  48                     recipient.id());
  49             store.updateRecipientAddress(recipient.id(), recipient.address().removeIdentifiersFrom(address));
  50
  51             return new Pair<>(store.addNewRecipient(address), List.of());
  52         }
  53
  54         var resultingRecipient = recipients.stream()
  55                 .filter(r -> r.address().aci().isPresent() && r.address().aci().equals(address.aci()))
  56                 .findFirst();
  57         if (resultingRecipient.isEmpty() && address.pni().isPresent()) {
  58             resultingRecipient = recipients.stream().filter(r -> r.address().pni().equals(address.pni())).findFirst();
  59         }
  60
  61         final Set<RecipientWithAddress> remainingRecipients;
  62         if (resultingRecipient.isEmpty()) {
  63             remainingRecipients = recipients;
  64         } else {
  65             remainingRecipients = new HashSet<>(recipients);
  66             remainingRecipients.remove(resultingRecipient.get());
  67         }
  68
  69         final var recipientsToBeMerged = new HashSet<RecipientWithAddress>();
  70         final var recipientsToBeStripped = new HashSet<RecipientWithAddress>();
  71         for (final var recipient : remainingRecipients) {
  72             if (!recipient.address().hasAdditionalIdentifiersThan(address)) {
  73                 recipientsToBeMerged.add(recipient);
  74                 continue;
  75             }
  76
  77             if (recipient.address().hasOnlyPniAndNumber()) {
  78                 // PNI and phone number are linked by the server
  79                 recipientsToBeMerged.add(recipient);
  80                 continue;
  81             }
  82
  83             recipientsToBeStripped.add(recipient);
  84         }
  85
  86         logger.debug("Got separate recipients for high trust identifiers {}, need to merge ({}) and strip ({})",
  87                 address,
  88                 recipientsToBeMerged.stream().map(r -> r.id().toString()).collect(Collectors.joining(", ")),
  89                 recipientsToBeStripped.stream().map(r -> r.id().toString()).collect(Collectors.joining(", ")));
  90
  91         RecipientAddress finalAddress = resultingRecipient.map(RecipientWithAddress::address).orElse(null);
  92         for (final var recipient : recipientsToBeMerged) {
  93             if (finalAddress == null) {
  94                 finalAddress = recipient.address();
  95             } else {
  96                 finalAddress = finalAddress.withOtherIdentifiersFrom(recipient.address());
  97             }
  98             store.removeRecipientAddress(recipient.id());
  99         }
 100         if (finalAddress == null) {
 101             finalAddress = address;
 102         } else {
 103             finalAddress = address.withOtherIdentifiersFrom(finalAddress);
 104         }
 105
 106         for (final var recipient : recipientsToBeStripped) {
 107             store.updateRecipientAddress(recipient.id(), recipient.address().removeIdentifiersFrom(finalAddress));
 108         }
 109
 110         // Create fixed RecipientIds that won't update its id after merged
 111         final var toBeMergedRecipientIds = recipientsToBeMerged.stream()
 112                 .map(r -> new RecipientId(r.id().id(), null))
 113                 .toList();
 114
 115         if (resultingRecipient.isPresent()) {
 116             store.updateRecipientAddress(resultingRecipient.get().id(), finalAddress);
 117             return new Pair<>(resultingRecipient.get().id(), toBeMergedRecipientIds);
 118         }
 119
 120         return new Pair<>(store.addNewRecipient(finalAddress), toBeMergedRecipientIds);
 121     }
 122
 123     public interface Store {
 124
 125         Set<RecipientWithAddress> findAllByAddress(final RecipientAddress address) throws SQLException;
 126
 127         RecipientId addNewRecipient(final RecipientAddress address) throws SQLException;
 128
 129         void updateRecipientAddress(RecipientId recipientId, final RecipientAddress address) throws SQLException;
 130
 131         void removeRecipientAddress(RecipientId recipientId) throws SQLException;
 132     }
 133 }