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lambda_lookup.py
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lambda_lookup.py
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import boto3
dynamo_client = boto3.resource('dynamodb')
def lambda_handler(event, context):
body = event["Hash"]
table = dynamo_client.Table("hash_lookup")
# For every hash given to us
# Calculate the plaintext and reutrn it
response = {}
for i in body:
data = (table.get_item(Key={"Hash": i}))
if not "Item" in data:
continue
data = data["Item"]
if not data["Verified"]:
# Updates it if it's not verifie
non_verified = update_non_verified(data)
table.put_item(Item=non_verified)
# Remove TTL and Uses from data
if "Uses" in data:
data["Uses"] = data["Uses"] + 1
else:
data["Uses"] = 1
data["Plaintext"] = data["Plaintext"].strip()
table.put_item(Item=data)
data = remove_info(data)
response[i] = data
return {
'statusCode': 200,
'body': response
}
def update_non_verified(row):
# If used 5 times
if row["Uses"] >= 5:
# Don't delete from DB
if "TTL" in row:
del row["TTL"]
return row
def remove_info(row):
if "TTL" in row:
del row["TTL"]
if "Uses" in row:
del row["Uses"]
return row