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Validate messages in MuSig mediation request service #4630

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Validate messages in MuSig mediation request service #4630

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17 changes: 17 additions & 0 deletions support/src/main/java/bisq/support/mediation/mu_sig/MuSigMediationRequestService.java
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Original file line number Diff line number Diff line change
Expand Up @@ -204,6 +204,23 @@ private int getDeterministicIndex(Set<AuthorizedBondedRole> mediators,
private void processMediationStateChangeMessage(MuSigMediationStateChangeMessage message) {
muSigOpenTradeChannelService.findChannelByTradeId(message.getTradeId())
.ifPresentOrElse(channel -> {
Optional<UserProfile> mediator = channel.getMediator();
if (mediator.isEmpty()) {
log.warn("Ignoring MuSigMediationStateChangeMessage for trade {} because mediator is missing in contract.",
message.getTradeId());
return;
}
if (!mediator.orElseThrow().getId().equals(message.getSenderUserProfile().getId())) {
log.warn("Ignoring MuSigMediationStateChangeMessage for trade {} with unexpected senderUserProfile {}.",
message.getTradeId(), message.getSenderUserProfile());
return;
}

if (bannedUserService.isUserProfileBanned(message.getSenderUserProfile())) {
log.warn("Ignoring MuSigMediationStateChangeMessage as sender is banned");
return;
}

MediationCaseState mediationCaseState = message.getMediationCaseState();
if (mediationCaseState == MediationCaseState.OPEN) {
// Requester had it activated at request time
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