def DeleteAgreement(agreement_key):
"""
Method for the dApp owner to delete claimed or refunded agreements
:param agreement_key: agreement_key
:type agreement_key: str
:return: whether the deletion succeeded
:rtype: bool
"""
if not CheckWitness(OWNER):
Log("Must be owner to delete an agreement")
return False
context = GetContext
agreement_data = Get(context, agreement_key)
status = agreement_data[12]
if status == 'claimed':
Delete(context, agreement_key)
DispatchDeleteAgreementEvent(agreement_key)
elif status == 'refunded':
Delete(context, agreement_key)
DispatchDeleteAgreementEvent(agreement_key)
return False
def DeleteMilestone(milestone_key):
"""
Method for the dApp owner to delete claimed or refunded agreements
:param milestone_key: milestone_key
:type milestone_key: str
:return: whether the deletion succeeded
:rtype: bool
"""
if not CheckWitness(OWNER):
Notify("Must be owner to delete an agreement")
return False
context = GetContext
milestone_data_serialized = Get(context, milestone_key)
milestone_data = deserialize_bytearray(milestone_data_serialized)
status = milestone_data[11]
if status == 'reviewed':
Delete(context, milestone_key)
DispatchDeleteMilestoneEvent(milestone_key)
return True
elif status == 'refunded':
Delete(context, milestone_key)
DispatchDeleteMilestoneEvent(milestone_key)
return True
return False
def remove_offer(marketplace, offer_id):
"""
Helper method to remove an offer that exists on a marketplace.
:param marketplace:str The name of the marketplace to access.
:param offer_id:int The id of the offer to remove.
:return:
bool: Whether the offer was removed.
"""
context = GetContext()
# Concatenate an offer key for the specified marketplace.
marketplace_offers_key = concat(offers_key, marketplace)
# Get all the available offers of a marketplace.
offers_s = get_all_offers(marketplace)
offers = deserialize_bytearray(offers_s)
# Iterate through the offers, we must currently remove by index.
# TODO: Remove manually searching for the index once list method "indexOf" is added.
current_index = 0
for offer in offers:
# If the offer equals the offer_id remove at current_index.
if offer == offer_id:
offers.remove(current_index)
# Replace the list of offers currently in storage with the modified list.
offers_s = serialize_array(offers)
Delete(context, marketplace_offers_key)
Put(context, marketplace_offers_key, offers_s)
# Delete the offer from the storage.
Delete(context, offer_id)
return True
current_index += 1
return False
def Unregister(user):
"""
Unregister a user from the KRYPTON network
:param user: the public address of the user
:type user: str
:return: whether the registration was successful
:rtype: bool
"""
# Check if the user is validating the transaction
if not CheckWitness(user):
Log('FORBIDDEN')
return False
context = GetContext()
uuid = Get(context, user)
if not (uuid == 0):
# Remove registration
Delete(context, user)
Delete(context, uuid)
Log('UNREGISTER_SUCCESS')
return True
# No registration found
Log('UNREGISTER_FAILED')
return False
def Register(user, provider, uuid):
"""
Register a user with a provider and use the provided UUID as
authorization nonce
:param user: the public address of the user
:type user: str
:param provider: the public address of the provider
:type provider: str
:param uuid: the UUID supplied by provider and confirmed by user
:type uuid: str
:return: whether the registration was successful
:rtype: bool
"""
# Check if the UUID format is validating
if not (CheckUUID(uuid)):
return False
# Check if the user is validating the transaction
if not CheckWitness(user):
Log('FORBIDDEN')
return False
context = GetContext()
address = Get(context, provider)
# Check if provider exists
if (address == 0):
Log('PROVIDER_ABSENT')
return False
address = Get(context, user)
# Remove old registration before inserting new registration
if not (address == 0):
Delete(context, user)
Delete(context, uuid)
Log('UNREGISTER_SUCCESS')
# Store new registration
Put(context, user, uuid)
Put(context, uuid, provider)
Log('REGISTER_SUCCESS')
return True
def Undeploy(provider):
"""
Undeploy a provider from the KRYPTON network
:param provider: the address of the SIP provider wallet
:type provider: str
:return: whether the deploy was successful
:rtype: bool
"""
if not CheckWitness(provider):
Log('FORBIDDEN')
return False
context = GetContext()
address = Get(context, provider)
# Remove deployment
if not (address == 0):
Delete(context, provider)
Log('UNDEPLOY_SUCCESS')
return True
# No deployment found
Log('UNDEPLOY_FAILED')
return False
def DeletePendingWithdrawal(account):
context = GetContext()
account_pending = concat(account, 'pending')
Delete(context, account_pending)
return True
def DoTransfer(t_from, t_to, amount):
"""
Method to transfer NEP5 tokens of a specified amount from one account to another
:param t_from: the address to transfer from
:type t_from: bytearray
:param t_to: the address to transfer to
:type t_to: bytearray
:param amount: the amount of NEP5 tokens to transfer
:type amount: int
:return: whether the transfer was successful
:rtype: bool
"""
if amount <= 0:
print("cannot transfer zero or less")
return False
from_is_sender = CheckWitness(t_from)
if from_is_sender:
if t_from == t_to:
return True
context = GetContext()
from_val = Get(context, t_from)
if from_val < amount:
print("Insufficient funds")
return False
if from_val == amount:
print("Removing all funds!")
Delete(context, t_from)
else:
difference = from_val - amount
Put(context, t_from, difference)
to_value = Get(context, t_to)
to_total = to_value + amount
Put(context, t_to, to_total)
OnTransfer(t_from, t_to, amount)
return True
else:
print("from address is not the tx sender")
return False
def RefundPromo(buyer, promo_id):
"""
Refund all of buyer's purchased tickets for specified promo
Args:
buyer (str): buyer's public key
promo_id (str): promo unique id
Returns:
(bool): True if successfully refunded
"""
#
# Checks for if args are valid and refund conditions are met
#
promo = get_promo_storage_keys(promo_id)
promo_exists = IsPromoExist(promo_id)
expired = IsPromoExpired(promo_id)
context = GetContext()
min_count = Get(context, promo.min_count_key)
purchased_count = Get(context, promo.purchased_count_key)
count_met = purchased_count >= min_count
if promo_exists:
# Cannot issue refund if minimum number of tickets has been sold past deadline
if expired and count_met:
Log('Refund no longer allowed, promo refund deadline has passed and the minimum number of tickets has been sold'
)
return False
buyer_key = concat(promo_id, buyer)
refund_quantity = Get(context, buyer_key)
if not refund_quantity:
Log('No purchases found using given public key and promo_id')
return False
#
# Refund tickets
#
Delete(context, buyer_key)
price_per_person = Get(context, promo.price_per_person_key)
refund_amount = refund_quantity * price_per_person
refund_address = GetCallingScriptHash()
OnRefund(refund_address, refund_amount)
# update purchased_count
purchased_count -= refund_quantity
Put(context, promo.purchased_count_key, purchased_count)
return True
def do_delete():
"""
Delete the storage and reset back to its default state.
:return: indication success execution of the command
:rtype: bool
"""
context = GetContext()
Delete(context, KEY)
return True
def deleteOperation(key):
print('delete attempt')
if key == None:
print('no key to delete')
return False
Delete(GetContext, key)
print('delete successful')
return True
def DoTransfer(t_from, t_to, amount):
"""
Method to transfer NEP5 tokens of a specified amount from one account to another
:param t_from: the address to transfer from
:type t_from: bytearray
:param t_to: the address to transfer to
:type t_to: bytearray
:param amount: the amount of NEP5 tokens to transfer
:type amount: int
:return: whether the transfer was successful
:rtype: bool
"""
if amount <= 0:
Log("Cannot transfer negative amount")
return False
from_is_sender = CheckWitness(t_from)
if not from_is_sender:
Log("Not owner of funds to be transferred")
return False
if t_from == t_to:
Log("Sending funds to self")
return True
context = GetContext()
from_val = Get(context, t_from)
if from_val < amount:
Log("Insufficient funds to transfer")
return False
if from_val == amount:
Delete(context, t_from)
else:
difference = from_val - amount
Put(context, t_from, difference)
to_value = Get(context, t_to)
to_total = to_value + amount
Put(context, t_to, to_total)
OnTransfer(t_from, t_to, amount)
return True
def DoTransfer(sender, receiver, amount):
"""
Method to transfer tokens from one account to another
:param sender: the address to transfer from
:type sender: bytearray
:param receiver: the address to transfer to
:type receiver: bytearray
:param amount: the amount of tokens to transfer
:type amount: int
:return: whether the transfer was successful
:rtype: bool
"""
if amount <= 0:
Log("Cannot transfer negative amount")
return False
from_is_sender = CheckWitness(sender)
if not from_is_sender:
Log("Not owner of funds to be transferred")
return False
if sender == receiver:
Log("Sending funds to self")
return True
context = GetContext()
from_val = Get(context, sender)
if from_val < amount:
Log("Insufficient funds to transfer")
return False
if from_val == amount:
Delete(context, sender)
else:
difference = from_val - amount
Put(context, sender, difference)
to_value = Get(context, receiver)
to_total = to_value + amount
Put(context, receiver, to_total)
DispatchTransferEvent(sender, receiver, amount)
return True
def put_cert(domain, cert):
curr_domains = Get(GetContext, "all_domains")
if curr_domains:
Delete(GetContext, "all_domains")
curr_domains = concat(curr_domains, ",")
new_curr_domains = concat(curr_domains, domain)
Put(GetContext, "all_domains", new_curr_domains)
else:
Put(GetContext, "all_domains", domain)
Put(GetContext, domain, cert)
return "ok"
def transfer_token(address_from, address_to, amount):
"""
Transfer the specified amount of LOOT from an address, to an address.
:param address_from:str The address sending the LOOT.
:param address_to:str The address receiving the LOOT.
:param amount:int The amount of LOOT being sent.
:return:
bool: Whether the transfer of LOOT was successful.
"""
context = GetContext()
# The amount being transferred must be > 0.
if amount <= 0:
return False
# If the address is sending LOOT to itself, save on gas and return True.
if address_from == address_to:
return True
# If the balance of the address sending the LOOT does not have enough, return False.
balance_from = balance_of(address_from)
if balance_from < amount:
return False
# Subtract the amount from the address sending the LOOT and save it to storage.
balance_from -= amount
Delete(context, address_from)
Put(context, address_from, balance_from)
# Add the LOOT to the address receiving the tokens and save it to storage.
balance_to = balance_of(address_to)
balance_to += amount
Delete(context, address_to)
Put(context, address_to, balance_to)
# Dispatch the transfer event.
# This event causes the "buy_offer" method to not work with the API.
# OnTransfer(address_from, address_to, amount)
return True
def Review(milestone_key, review_score):
"""
Method to signal result by SC owner or oracle
:param milestone_key: the key of the milestone
:type milestone_key: bytearray
:param review_score: score that the reviewer assigned to this milestone
:type review_score: int
:return: whether a pay out to the assignee is done
:rtype: bool
"""
# Check if the method is triggered by the SC owner or oracle
context = GetContext()
milestone_data_serialized = Get(context, milestone_key)
milestone_data = deserialize_bytearray(milestone_data_serialized)
oracle = milestone_data[6]
if not CheckWitness(OWNER) and not CheckWitness(oracle):
Notify("Must be SC owner or oracle to submit review")
return False
status = milestone_data[11]
if not status == 'initialized':
Notify("Contract has incorrect status to do a review")
return False
elif status == 'refunded':
Notify("Contract is already refunded")
return False
milestone_data[11] = 'reviewed'
milestone_data[12] = review_score
assignee = milestone_data[2]
threshold = milestone_data[10]
pay_out = milestone_data[7]
# Update storage
Delete(context, milestone_key)
milestone_data_serialized = serialize_array(milestone_data)
Put(context, milestone_key, milestone_data_serialized)
DispatchReviewEvent(milestone_key, review_score)
if review_score >= threshold:
Notify("Review score was above threshold, processing pay out")
DoTransfer(OWNER, assignee, pay_out)
DispatchTransferEvent(OWNER, assignee, pay_out)
return True
def spend(context, amount, src, dest, tag):
context = GetContext()
org_tag = concat(src, tag)
total = Get(context, org_tag)
if not total:
return False
if amount > total:
return False
Delete(context, org_tag)
new_total = total - amount
Put(context, org_tag, new_total)
receiver = GetExecutingScriptHash()
OnSpend(dest, amount, receiver)
return True
def SetPendingWithdrawal(account, value):
context = GetContext()
account_has_pending = concat(account, 'pending')
if value == 0:
Delete(context, account_has_pending)
else:
Put(context, account_has_pending, value)
return True
def DeleteRenter(renter_wallet_address):
msg = concat("DeleteRenter: ", renter_wallet_address)
Notify(msg)
context = GetContext()
owner = Get(context, renter_wallet_address)
if not owner:
Notify("Domain is not yet registered")
return False
if not CheckWitness(owner):
Notify("Sender is not the owner, cannot transfer")
return False
Delete(context, renter_wallet_address)
return True
def DeleteDomain(domain_name):
msg = concat("DeleteDomain: ", domain_name)
Notify(msg)
context = GetContext()
owner = Get(context, domain_name)
if not owner:
Notify("Domain is not yet registered")
return False
if not CheckWitness(owner):
Notify("Sender is not the owner, cannot transfer")
return False
Delete(context, domain_name)
return True
def Refund(milestone_key, fee_refund):
"""
Method for the contract owner to refund payments
:param milestone_key: milestone_key
:type milestone_key: bytearray
:param fee_refund: fee_refund
:type fee_refund: bool
:return: whether the refund was successful
:rtype: bool
"""
if not CheckWitness(OWNER):
Notify("Must be owner to do a refund to all")
return False
context = GetContext()
milestone_data_serialized = Get(context, milestone_key)
milestone_data = deserialize_bytearray(milestone_data_serialized)
customer = milestone_data[1]
status = milestone_data[11]
pay_out = milestone_data[7]
fee = milestone_data[9]
if status == 'refunded':
Notify("A refund already took place")
return False
# Perform refund
if fee_refund:
refund_amount = pay_out + fee
else:
refund_amount = pay_out
DoTransfer(OWNER, customer, refund_amount)
DispatchTransferEvent(OWNER, customer, refund_amount)
milestone_data[11] = 'refunded'
milestone_data_serialized = serialize_array(milestone_data)
Delete(context, milestone_key)
Put(context, milestone_key, milestone_data_serialized)
DispatchRefundEvent(milestone_key)
return True
def DeleteBuyer(Buyer_name):
msg = concat("DeleteBuyer: ", Buyer_name)
Notify(msg)
context = GetContext()
owner = Get(context, Buyer_name)
if not owner:
Notify("Buyer is not yet registered")
return False
if not CheckWitness(owner):
Notify(
"This person is not the owner of the name, the Buyer cannot be deleted"
)
return False
Delete(context, Buyer_name)
return True
def DeleteFarm(Farm_name):
msg = concat("DeleteFarm: ", Farm_name)
Notify(msg)
context = GetContext()
owner = Get(context, Farm_name)
if not owner:
Notify("Farm is not yet registered")
return False
if not CheckWitness(owner):
Notify(
"This person is not the owner of the farm, the farm cannot be deleted"
)
return False
Delete(context, Farm_name)
return True
def save_inventory(marketplace, address, inventory):
"""
Helper method for inventory operations, saves a serialized list of items to storage.
:param marketplace:str The name of the marketplace to access.
:param address:str The address of the inventory to save.
:param inventory:bytearray A serialized list containing the items an address owns.
:return:
bool: Whether the operation completed.
"""
context = GetContext()
# Concatenate the specific storage key, delete the old storage
# and add the updated inventory into storage.
inventory_marketplace_key = concat(inventory_key, marketplace)
storage_key = concat(inventory_marketplace_key, address)
Delete(context, storage_key)
Put(context, storage_key, inventory)
return True
def increment_cln(product_id):
"""
:param product_id:
:return: bool
"""
if not is_owner(product_id):
return False
product = init_product(product_id)
# increment the cln
current_cln = product.cln
new_cln = current_cln + 1
all_product_data = get_all_product(product)
all_product_data[7] = new_cln
Delete(GetContext, product_id)
Put(GetContext, product_id, all_product_data)
return True
def Main(operation, args):
if operation == 'Query':
domain = args[0]
return Query(domain)
if operation == 'Register':
domain = args[0]
owner = args[1]
return Register(domain, owner)
if operation == 'Transfer':
domain = args[0]
to = args[1]
return Transfer(domain, to)
if operation == 'Delete':
domain = args[0]
return Delete(domain)
return False
def DeletePromo(promo_id):
"""
Delete promo identified by promo_id
Args:
promo_id (str): promo unique id
Returns:
(bool): True if promo deleted successfully
"""
expired = IsPromoExpired(promo_id)
if expired:
Log('Promo has already finished, can no longer delete it!')
return False
context = GetContext()
Delete(context, promo_id) # delete promo_exists
return True
def testAll():
Put(GetContext, 'original', 1)
amount = Get(GetContext, 'original')
amount += 20
Put(GetContext, 'original', amount)
Put(GetContext, 'copy', amount)
Delete(GetContext, 'copy')
copy = Get(GetContext, 'copy')
original = Get(GetContext, 'original')
Put(GetContext, 'storeString', 'this is a string')
storeString = Get(GetContext, 'storeString')
test = [original, copy, amount, storeString]
Notify(test)
return original
def donate(context, dest_tag, dest_tag_users, dest_tag_src, src, amount):
total = Get(context, dest_tag)
# This destination + tag already have donations
if total:
new_total = total + amount
Put(context, dest_tag, new_total)
donors = Get(context, dest_tag_users)
# Donor has already donated previously
if contains(donors, src):
amount_donated = Get(context, dest_tag_src)
amount_donated = amount_donated + amount
# New donor, need to add to list
else:
donors = concat(donors, ",")
donors = concat(donors, src)
Delete(context, dest_tag_users)
Put(context, dest_tag_users, donors)
Put(context, dest_tag_src, amount)
# First donation to this destination + tag
else:
Put(context, dest_tag, amount)
Put(context, dest_tag_users, src)
Put(context, dest_tag_src, amount)
def transfer_license(license_id, new_owner):
"""
transfer license from one user to the other
:param license_id:
:param new_owner:
:return: bool
"""
if not is_owner(license_id):
return False
license = init_license(license_id)
product_id = license.product_id
product = init_product(product_id)
transferable = product.trans
# check if the license is still valid
license_expiration_height = license.expir
height = GetHeight()
if height > license_expiration_height:
print("This license has already expired!")
return False
if not transferable:
print("This product does not support transfers")
return False
Delete(GetContext, license_id)
all_license_data = get_all_license_data(license)
all_license_data[0] = new_owner
Put(GetContext, license_id, all_license_data)
return True