def ipfs_ledger_deconstruct():
data, nhash = ipfs_ledger_getter()
#generate.initailize_new_genesis_chain(nhash)
ledger = writer.Ledger(nhash)
with open(ledger.filename, 'wb') as file:
file.write(data)
writer.ledger_parse(ledger.filename)
print(chain.c_hash)
def initailize_genesis_chain(ledgername):
###### DANGER THIS FUNCTION WILL CREATE A NEW GENESIS BLOCK ON THE SELECTED LEDGER
#### USE ONLY FOR FRESH LEDGER OR USE initailize_new_genesis_chain()
ledger = writer.Ledger(ledgername) # create ledger object for filename reference
genesis_block = g_g_block() # generate the genesis block
chain.blockchain.append(genesis_block) # add genesis block to the block chain list
print_block(chain.blockchain,0) # print genesis block info
gblocklist = [genesis_block.previous_hash, genesis_block.current_hash, genesis_block.next_hash] # generate genesis block value list
writer.ledger_constructor(ledger.filename, gblocklist) # write genesis block to ledger
def new_block(ledgerfilename):
# ledger class instance for file name reference
ledger = writer.Ledger(ledgerfilename)
# parse the selected ledger
writer.ledger_parse(ledger.filename)
# data gets stored in lists in module chain.py
l = bc_l() # blockchain length calc
l -= 1
# generate the next block in the chain
newblock = Block(chain.c_hash[l], chain.n_hash[l])
chain.blockchain.append(newblock)
nblocklist = [
newblock.previous_hash, newblock.current_hash, newblock.next_hash
]
#TODO: concensus check to eliminate duplicate blocks
# add new block to the ledger
writer.ledger_constructor(ledger.filename, nblocklist)
def chash_analyzer(incoming_chash):
# check if incoming client hash is a trusted hash
# create file abject TODO: make this object in the setup script
thfile = writer.Ledger('trustedhashes')
# parse trusted hash file and append trusted hashes to dynamic list
writer.ledger_parse(thfile.filename)
log('BEGIN HASH CHECK')
for i in range(0, len(trusted_hashes)):
if incoming_chash != trusted_hashes[i]:
log('CHASH CHECK FAIL')
handshake.clear()
handshake.append(0)
return 'fail'
elif incoming_chash == trusted_hashes[i]:
log('CHASH CHECK PASS')
# hs_key is setup function contained in the setup script
handshake.clear()
handshake.append(hs_key)
return hs_key
else:
log('CHASH CHECK COMPLETELY FAILED')
handshake.clear()
handshake.append(0)
return 'fail'
def upload_g_chain():
name = input('ledger>\t')
ledger = writer.Ledger(name)
add_file(ledger.filename)