def verify_sig(sig):
'''The base function for verifying an ASCII-armored signature.'''
sig_info = parse_sig(sig)
if sig_info:
message = strip_armor(sig)
valid = bitcoinecdsa.verify(sig_info['signature_address'], message,
sig_info['signature'])
else:
valid = False
return {'valid': valid, 'info': sig_info}
def verify_sig(sig):
'''The base function for verifying an ASCII-armored signature.'''
sig_info = parse_sig(sig)
if sig_info:
message = strip_armor(sig)
valid = bitcoinecdsa.verify(
sig_info['signature_address'],
message,
sig_info['signature']
)
else:
valid = False
return {'valid': valid, 'info': sig_info}
def sign_and_store_document(rein,
doc_type,
document,
signature_address=None,
signature_key=None,
store=True):
"""
Save document if no signature key provided. Otherwise sign document, then validate and store it.
"""
validated = False
if signature_key is None: # signing will happen outside app
f = open(doc_type + '.txt', 'w')
f.write(document)
f.close()
click.echo("\n%s\n" % document)
done = False
while not done:
filename = click.prompt("File containing signed document",
type=str,
default=doc_type + '.sig.txt')
if os.path.isfile(filename):
done = True
f = open(filename, 'r')
signed = f.read()
res = validate_enrollment(signed)
if res:
validated = True
else: # sign with stored delegate key
signature = sign(signature_key, document)
validated = verify(signature_address, document, signature)
if validated:
# insert signed document into documents table
b = "-----BEGIN BITCOIN SIGNED MESSAGE-----"
c = "-----BEGIN SIGNATURE-----"
d = "-----END BITCOIN SIGNED MESSAGE-----"
signed = "%s\n%s\n%s\n%s\n%s\n%s" % (b, document, c, signature_address,
signature, d)
click.echo('\n' + signed + '\n')
if store:
d = Document(rein,
doc_type,
signed,
sig_verified=True,
testnet=rein.testnet)
rein.session.add(d)
rein.session.commit()
return d
return validated
def delete():
'''Delete a key-value pair.'''
# Validate JSON body w/ API params
try:
body = request.data.decode('utf-8')
in_obj = json.loads(body)
except:
return ("JSON Decode failed", 400, {'Content-Type': 'text/plain'})
k = in_obj['key']
d = in_obj['address']
n = in_obj['nonce']
s = in_obj['signature']
# check signature
owner = Owner.query.filter_by(delegate=d).first()
if owner.nonce not in n or verify(o, k + o + n, s):
body = json.dumps({'error': 'Incorrect signature.'})
code = 401
else:
# check if key already exists and is owned by the same owner
kv = db.session.query(Kv).filter_by(key=k).filter_by(owner=o).first()
if kv is None:
body = json.dumps(
{'error': 'Key not found or not owned by caller.'})
code = 404
else:
# free up storage quota and remove kv
size = len(kv.value)
sale_id = kv.sale
s = db.session.query(Sale).get(sale_id)
s.bytes_used = s.bytes_used - size
db.session.delete(kv)
db.session.commit()
body = json.dumps({'result': 'success'})
code = 200
return (body, code, {
'Content-length': len(body),
'Content-type': 'application/json',
})
def get_deposit_address():
'''Return new or unused deposit address for on-chain funding.'''
# check if user exists
o = db.session.query(Owner).get(request.args.get('address'))
if o is None:
return abort(500)
address = request.args.get('address')
message = request.args.get('contact') + "," + address
signature = request.args.get('signature')
print(len(signature))
if len(signature) == 88 and verify(address, message, signature):
body = json.dumps({'address': 'hereyago'})
else:
body = json.dumps({'error': 'Invalid signature'})
return (body, 200, {
'Content-length': len(body),
'Content-type': 'application/json',
})
def get_deposit_address():
'''Return new or unused deposit address for on-chain funding.'''
# check if user exists
o = db.session.query(Owner).get(request.args.get('address'))
if o is None:
return abort(500)
address = request.args.get('address')
message = request.args.get('contact') + "," + address
signature = request.args.get('signature')
print(len(signature))
if len(signature) == 88 and verify(address, message, signature):
body = json.dumps({'address': 'hereyago'})
else:
body = json.dumps({'error': 'Invalid signature'})
return (body, 200, {'Content-length': len(body),
'Content-type': 'application/json',
}
)
def delete():
'''Delete a key-value pair.'''
# Validate JSON body w/ API params
try:
body = request.data.decode('utf-8')
in_obj = json.loads(body)
except:
return ("JSON Decode failed", 400, {'Content-Type':'text/plain'})
k = in_obj['key']
d = in_obj['address']
n = in_obj['nonce']
s = in_obj['signature']
# check signature
owner = Owner.query.filter_by(delegate=d).first()
if owner.nonce not in n or verify(o, k + o + n, s):
body = json.dumps({'error': 'Incorrect signature.'})
code = 401
else:
# check if key already exists and is owned by the same owner
kv = db.session.query(Kv).filter_by(key=k).filter_by(owner=o).first()
if kv is None:
body = json.dumps({'error': 'Key not found or not owned by caller.'})
code = 404
else:
# free up storage quota and remove kv
size = len(kv.value)
sale_id = kv.sale
s = db.session.query(Sale).get(sale_id)
s.bytes_used = s.bytes_used - size
db.session.delete(kv)
db.session.commit()
body = json.dumps({'result': 'success'})
code = 200
return (body, code, {'Content-length': len(body),
'Content-type': 'application/json',
}
)
def sign_and_store_document(rein, doc_type, document, signature_address=None, signature_key=None, store=True):
"""
Save document if no signature key provided. Otherwise sign document, then validate and store it.
"""
validated = False
if signature_key is None: # signing will happen outside app
f = open(doc_type + '.txt', 'w')
f.write(document)
f.close()
click.echo("\n%s\n" % document)
done = False
while not done:
filename = click.prompt("File containing signed document", type=str, default=doc_type + '.sig.txt')
if os.path.isfile(filename):
done = True
f = open(filename, 'r')
signed = f.read()
res = validate_enrollment(signed)
if res:
validated = True
else: # sign with stored delegate key
signature = sign(signature_key, document)
validated = verify(signature_address, document, signature)
if validated:
# insert signed document into documents table
b = "-----BEGIN BITCOIN SIGNED MESSAGE-----"
c = "-----BEGIN SIGNATURE-----"
d = "-----END BITCOIN SIGNED MESSAGE-----"
signed = "%s\n%s\n%s\n%s\n%s\n%s" % (b, document, c, signature_address, signature, d)
click.echo('\n' + signed + '\n')
if store:
d = Document(rein, doc_type, signed, sig_verified=True, testnet=rein.testnet)
rein.session.add(d)
rein.session.commit()
return d
return validated
def put():
'''Store a key-value pair.'''
# get size of file sent
# Validate JSON body w/ API params
try:
body = request.data.decode('utf-8')
in_obj = json.loads(body)
except:
return ("JSON Decode failed", 400, {'Content-Type': 'text/plain'})
k = in_obj['key']
v = in_obj['value']
o = in_obj['owner']
n = in_obj['nonce']
s = in_obj['signature']
d = in_obj['signature_address']
if 'testnet' in in_obj:
testnet = in_obj['testnet']
else:
testnet = False
owner = Owner.query.filter_by(address=o).first()
if owner is None:
body = json.dumps({'error': 'User not found'})
code = 403
elif owner.nonce != n:
body = json.dumps({'error': 'Bad nonce'})
code = 401
elif not verify(d, k + v + d + n, s):
body = json.dumps({'error': 'Incorrect signature'})
code = 401
else:
size = len(k) + len(v)
# need to also check that we have an enrollment that makes this a delegate of this owner
# check if owner has enough free storage
# get free space from each of owner's buckets
result = db.engine.execute(
'select * from sale where julianday("now") - \
julianday(sale.created) < sale.term order by sale.created desc'
)
# choose newest bucket that has enough space
sale_id = None
for row in result:
if (row[7] + size) < (1024 * 1024):
sale_id = row[0]
if sale_id is None: # we couldn't find enough free space
body = json.dumps({'error': 'Insufficient storage space.'})
code = 403
else:
# check if key already exists and is owned by the same owner
kv = db.session.query(Kv).filter(and_(Kv.key == k,
Kv.owner == o)).first()
if kv is None:
kv = Kv(k, v, o, sale_id, testnet)
db.session.add(kv)
db.session.commit()
else:
kv.value = v
db.session.commit()
s = db.session.query(Sale).get(sale_id)
s.bytes_used = s.bytes_used + size
db.session.commit()
body = json.dumps({'result': 'success'})
code = 201
return (body, code, {
'Content-length': len(body),
'Content-type': 'application/json',
})
def put():
'''Store a key-value pair.'''
# get size of file sent
# Validate JSON body w/ API params
try:
body = request.data.decode('utf-8')
in_obj = json.loads(body)
except:
return ("JSON Decode failed", 400, {'Content-Type':'text/plain'})
k = in_obj['key']
v = in_obj['value']
o = in_obj['owner']
n = in_obj['nonce']
s = in_obj['signature']
d = in_obj['signature_address']
if 'testnet' in in_obj:
testnet = in_obj['testnet']
else:
testnet = False
owner = Owner.query.filter_by(address=o).first()
if owner is None:
body = json.dumps({'error': 'User not found'})
code = 403
elif owner.nonce != n:
body = json.dumps({'error': 'Bad nonce'})
code = 401
elif not verify(d, k + v + d + n, s) :
body = json.dumps({'error': 'Incorrect signature'})
code = 401
else:
size = len(k) + len(v)
# need to also check that we have an enrollment that makes this a delegate of this owner
# check if owner has enough free storage
# get free space from each of owner's buckets
result = db.engine.execute('select * from sale where julianday("now") - \
julianday(sale.created) < sale.term order by sale.created desc')
# choose newest bucket that has enough space
sale_id = None
for row in result:
if (row[7] + size) < (1024 * 1024):
sale_id = row[0]
if sale_id is None: # we couldn't find enough free space
body = json.dumps({'error': 'Insufficient storage space.'})
code = 403
else:
# check if key already exists and is owned by the same owner
kv = db.session.query(Kv).filter(and_(Kv.key == k, Kv.owner == o)).first()
if kv is None:
kv = Kv(k, v, o, sale_id, testnet)
db.session.add(kv)
db.session.commit()
else:
kv.value = v
db.session.commit()
s = db.session.query(Sale).get(sale_id)
s.bytes_used = s.bytes_used + size
db.session.commit()
body = json.dumps({'result': 'success'})
code = 201
return (body, code, {'Content-length': len(body),
'Content-type': 'application/json',
}
)
