PermissionedDEXHelpers.cpp

#include <xrpl/ledger/helpers/CredentialHelpers.h>
#include <xrpl/tx/transactors/dex/PermissionedDEXHelpers.h>
 
namespace xrpl {
namespace permissioned_dex {
 
bool
accountInDomain(ReadView const& view, AccountID const& account, Domain const& domainID)
{
    auto const sleDomain = view.read(keylet::permissionedDomain(domainID));
    if (!sleDomain)
        return false;
 
    // domain owner is in the domain
    if (sleDomain->getAccountID(sfOwner) == account)
        return true;
 
    auto const& credentials = sleDomain->getFieldArray(sfAcceptedCredentials);
 
    bool const inDomain =
        std::any_of(credentials.begin(), credentials.end(), [&](auto const& credential) {
            auto const sleCred = view.read(
                keylet::credential(account, credential[sfIssuer], credential[sfCredentialType]));
            if (!sleCred || !sleCred->isFlag(lsfAccepted))
                return false;
 
            return !credentials::checkExpired(sleCred, view.header().parentCloseTime);
        });
 
    return inDomain;
}
 
bool
offerInDomain(
    ReadView const& view,
    uint256 const& offerID,
    Domain const& domainID,
    beast::Journal j)
{
    auto const sleOffer = view.read(keylet::offer(offerID));
 
    // The following are defensive checks that should never happen, since this
    // function is used to check against the order book offers, which should not
    // have any of the following wrong behavior
    if (!sleOffer)
        return false;  // LCOV_EXCL_LINE
    if (!sleOffer->isFieldPresent(sfDomainID))
        return false;  // LCOV_EXCL_LINE
    if (sleOffer->getFieldH256(sfDomainID) != domainID)
        return false;  // LCOV_EXCL_LINE
 
    if (sleOffer->isFlag(lsfHybrid) && !sleOffer->isFieldPresent(sfAdditionalBooks))
    {
        JLOG(j.error()) << "Hybrid offer " << offerID << " missing AdditionalBooks field";
        return false;  // LCOV_EXCL_LINE
    }
 
    return accountInDomain(view, sleOffer->getAccountID(sfAccount), domainID);
}
 
}  // namespace permissioned_dex
 
}  // namespace xrpl