def start(self, start_daemon=False):
daemon_started = False
while True:
try:
self.socket.connect(('', self.daemon_port))
threading.Thread.start(self)
return True
except socket.error:
if not start_daemon:
return False
elif not daemon_started:
print_stderr("Starting daemon [%s]" %
self.config.get('server'))
daemon_started = True
pid = os.fork()
if (pid == 0): # The first child.
os.chdir("/")
os.setsid()
os.umask(0)
pid2 = os.fork()
if (pid2 == 0): # Second child
server = NetworkServer(self.config)
try:
server.main_loop()
except KeyboardInterrupt:
print "Ctrl C - Stopping server"
sys.exit(1)
sys.exit(0)
else:
time.sleep(0.1)
def do_start_daemon(config):
"""Start a subprocess running this file."""
import subprocess
args = [sys.executable, __file__, config.path]
logfile = open(os.path.join(config.path, 'daemon.log'),'w')
p = subprocess.Popen(args, stderr=logfile, stdout=logfile, close_fds=(os.name=="posix"))
print_stderr("starting daemon (PID %d)"%p.pid)
def start(self, start_daemon=False):
daemon_started = False
while True:
try:
self.socket.connect(('', self.daemon_port))
threading.Thread.start(self)
return True
except socket.error:
if not start_daemon:
return False
elif not daemon_started:
print_stderr( "Starting daemon [%s]"%self.config.get('server'))
daemon_started = True
pid = os.fork()
if (pid == 0): # The first child.
os.chdir("/")
os.setsid()
os.umask(0)
pid2 = os.fork()
if (pid2 == 0): # Second child
server = NetworkServer(self.config)
try:
server.main_loop()
except KeyboardInterrupt:
print "Ctrl C - Stopping server"
sys.exit(1)
sys.exit(0)
else:
time.sleep(0.1)
def do_start_daemon(config):
import subprocess
args = ["python", __file__, config.path]
logfile = open(os.path.join(config.path, 'daemon.log'), 'w')
if config.get('portable', False):
args.append('--portable')
p = subprocess.Popen(args, stderr=logfile, stdout=logfile, close_fds=True)
print_stderr("starting daemon (PID %d)" % p.pid)
def do_start_daemon(config):
import subprocess
logfile = open(os.path.join(config.path, 'daemon.log'), 'w')
p = subprocess.Popen([sys.executable, __file__],
stderr=logfile,
stdout=logfile,
close_fds=(os.name == "posix"))
print_stderr("starting daemon (PID %d)" % p.pid)
def do_start_daemon(config):
import subprocess
logfile = open(os.path.join(config.path, 'daemon.log'), 'w')
p = subprocess.Popen(["python", __file__],
stderr=logfile,
stdout=logfile,
close_fds=True)
print_stderr("starting daemon (PID %d)" % p.pid)
def do_start_daemon(config):
import subprocess
args = ["python", __file__, config.path]
logfile = open(os.path.join(config.path, 'daemon.log'),'w')
if config.get('portable', False):
args.append('--portable')
p = subprocess.Popen(args, stderr=logfile, stdout=logfile, close_fds=True)
print_stderr("starting daemon (PID %d)"%p.pid)
def do_start_daemon(config):
"""Start a subprocess running this file."""
import subprocess
args = [sys.executable, __file__, config.path]
logfile = open(os.path.join(config.path, 'daemon.log'), 'w')
p = subprocess.Popen(args,
stderr=logfile,
stdout=logfile,
close_fds=(os.name == "posix"))
print_stderr("starting daemon (PID %d)" % p.pid)
def set_key(self, key, value, save = True):
if not self.is_modifiable(key):
print_stderr("Warning: not changing config key '%s' set on the command line" % key)
return
with self.lock:
self.user_config[key] = value
if save:
self.save_user_config()
return
def set_key(self, key, value, save = True):
if not self.is_modifiable(key):
print_stderr("Warning: not changing config key '%s' set on the command line" % key)
return
with self.lock:
self.user_config[key] = value
if save:
self.save_user_config()
return
def do_monkey_patching_of_python_ecdsa_internals_with_libsecp256k1():
if not _libsecp256k1:
print_stderr(
'[ecc] warning: libsecp256k1 library not available, falling back to python-ecdsa'
)
return
if not _patched_functions.prepared_to_patch:
raise Exception("can't patch python-ecdsa without preparations")
ecdsa.ecdsa.Private_key.sign = _patched_functions.fast_sign
ecdsa.ecdsa.Public_key.verifies = _patched_functions.fast_verify
ecdsa.ellipticcurve.Point.__mul__ = _patched_functions.fast_mul
# ecdsa.ellipticcurve.Point.__add__ = ... # TODO??
_patched_functions.monkey_patching_active = True
def get_rpc_credentials(config):
rpc_user = config.get('rpcuser', None)
rpc_password = config.get('rpcpassword', None)
if rpc_user is None or rpc_password is None:
rpc_user = '******'
import ecdsa, base64
bits = 128
nbytes = bits // 8 + (bits % 8 > 0)
pw_int = ecdsa.util.randrange(pow(2, bits))
pw_b64 = base64.b64encode(int_to_bytes(pw_int, nbytes, 'big'), b'-_')
rpc_password = to_string(pw_b64, 'ascii')
config.set_key('rpcuser', rpc_user)
config.set_key('rpcpassword', rpc_password, save=True)
elif rpc_password == '':
from .util import print_stderr
print_stderr('WARNING: RPC authentication is disabled.')
return rpc_user, rpc_password
def get_daemon(config, start_daemon=True):
import socket
daemon_port = config.get('daemon_port', DAEMON_PORT)
daemon_started = False
while True:
try:
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect(('', daemon_port))
if not daemon_started:
print_stderr("Connected to daemon on port %d" % daemon_port)
return s
except socket.error:
if not start_daemon:
return False
elif not daemon_started:
do_start_daemon(config)
daemon_started = True
else:
time.sleep(0.1)
def get_daemon(config, start_daemon=True):
import socket
daemon_port = config.get('daemon_port', DAEMON_PORT)
daemon_started = False
while True:
try:
s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
s.connect(('localhost', daemon_port))
if not daemon_started:
print_stderr("Connected to daemon on port %d"%daemon_port)
return s
except socket.error:
if not start_daemon:
return False
elif not daemon_started:
do_start_daemon(config)
daemon_started = True
else:
time.sleep(0.1)
def print_log_msg(log_level, msg):
import log
ll = getattr(log, "LOG_%s" % log_level.upper())
file_called_from = inspect.stack()[2][1]
line_called_from = inspect.stack()[2][2]
method_called_from = inspect.stack()[2][3]
debug_info = "%s:%s:%s" % (os.path.basename(file_called_from),
method_called_from, line_called_from)
try:
for l in msg.split("\n"):
if ll in log.LOG_TO_STDOUT:
print "%s: %s" % (log_level, l)
else:
util.print_stderr("%s[%s]: %s\n" % (log_level, debug_info, l))
except Exception as e:
# A logging mechanism should never cause a script to abort if
# you can't expand all formatting markers
util.print_stderr("Error while processing %s message:\n%s\n" %
(log_level.upper(), e))
def get_daemon(config, start_daemon=True):
import socket
daemon_socket = os.path.join(config.path, DAEMON_SOCKET)
daemon_started = False
while True:
try:
s = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
s.connect(daemon_socket)
if not daemon_started:
print_stderr("Connected to daemon")
return s
except socket.error:
if not start_daemon:
return False
elif not daemon_started:
do_start_daemon(config)
daemon_started = True
else:
time.sleep(0.1)
except:
# do not use daemon if AF_UNIX is not available (windows)
return False
def load_library():
if sys.platform == 'darwin':
library_path = 'libsecp256k1.0.dylib'
elif sys.platform in ('windows', 'win32'):
library_path = 'libsecp256k1.dll'
elif 'ANDROID_DATA' in os.environ:
library_path = 'libsecp256k1.so'
else:
library_path = 'libsecp256k1.so.0'
secp256k1 = ctypes.cdll.LoadLibrary(library_path)
if not secp256k1:
print_stderr('[ecc] warning: libsecp256k1 library failed to load')
return None
try:
secp256k1.secp256k1_context_create.argtypes = [c_uint]
secp256k1.secp256k1_context_create.restype = c_void_p
secp256k1.secp256k1_context_randomize.argtypes = [c_void_p, c_char_p]
secp256k1.secp256k1_context_randomize.restype = c_int
secp256k1.secp256k1_ec_pubkey_create.argtypes = [
c_void_p, c_void_p, c_char_p
]
secp256k1.secp256k1_ec_pubkey_create.restype = c_int
secp256k1.secp256k1_ecdsa_sign.argtypes = [
c_void_p, c_char_p, c_char_p, c_char_p, c_void_p, c_void_p
]
secp256k1.secp256k1_ecdsa_sign.restype = c_int
secp256k1.secp256k1_ecdsa_verify.argtypes = [
c_void_p, c_char_p, c_char_p, c_char_p
]
secp256k1.secp256k1_ecdsa_verify.restype = c_int
secp256k1.secp256k1_ec_pubkey_parse.argtypes = [
c_void_p, c_char_p, c_char_p, c_size_t
]
secp256k1.secp256k1_ec_pubkey_parse.restype = c_int
secp256k1.secp256k1_ec_pubkey_serialize.argtypes = [
c_void_p, c_char_p, c_void_p, c_char_p, c_uint
]
secp256k1.secp256k1_ec_pubkey_serialize.restype = c_int
secp256k1.secp256k1_ecdsa_signature_parse_compact.argtypes = [
c_void_p, c_char_p, c_char_p
]
secp256k1.secp256k1_ecdsa_signature_parse_compact.restype = c_int
secp256k1.secp256k1_ecdsa_signature_serialize_compact.argtypes = [
c_void_p, c_char_p, c_char_p
]
secp256k1.secp256k1_ecdsa_signature_serialize_compact.restype = c_int
secp256k1.secp256k1_ec_pubkey_tweak_mul.argtypes = [
c_void_p, c_char_p, c_char_p
]
secp256k1.secp256k1_ec_pubkey_tweak_mul.restype = c_int
secp256k1.ctx = secp256k1.secp256k1_context_create(
SECP256K1_CONTEXT_SIGN | SECP256K1_CONTEXT_VERIFY)
r = secp256k1.secp256k1_context_randomize(secp256k1.ctx,
os.urandom(32))
if r:
return secp256k1
else:
print_stderr('[ecc] warning: secp256k1_context_randomize failed')
return None
except (OSError, AttributeError):
#traceback.print_exc(file=sys.stderr)
print_stderr(
'[ecc] warning: libsecp256k1 library was found and loaded but there was an error when using it'
)
return None
learnerOutput = [submission.main(x) for x in testCase["input"]]
except Exception as e:
send_feedback(0.0, "Your code returned this error: " + str(e))
return
for i in range(0, numTestCases):
if testCase["output"][i] != learnerOutput[i]:
numTestCasesFailed += 1
# Calculate score and send feedback ----------------------------------------
totalPenalty = min(1.0, (testCasePenalty * numTestCasesFailed))
finalFractionalScore = 1.0 - totalPenalty
if numTestCasesFailed > 0:
feedback = "Your solution failed " + str(
numTestCasesFailed) + " out of " + str(
numTestCases) + " test cases. Please try again!"
else:
feedback = "Great job! You passed all test cases."
send_feedback(finalFractionalScore, feedback)
if __name__ == '__main__':
try:
partid = os.environ['partId']
except Exception as e:
print_stderr("Please provide the partId.")
send_feedback(0.0, "Please provide the partId.")
else:
main(partid)
def do_start_daemon(config):
import subprocess
logfile = open(os.path.join(config.path, 'daemon.log'),'w')
p = subprocess.Popen([sys.executable,__file__], stderr=logfile, stdout=logfile, close_fds=(os.name=="posix"))
print_stderr("starting daemon (PID %d)"%p.pid)
def do_start_daemon(config):
import subprocess
logfile = open(os.path.join(config.path, 'daemon.log'),'w')
p = subprocess.Popen(["python",__file__], stderr=logfile, stdout=logfile, close_fds=True)
print_stderr("starting daemon (PID %d)"%p.pid)
def main(partId):
# Define # of test cases ---------------------------------------------------
# Please ensure that the numTestCases is an integer >= 1.
numTestCases = 5
if numTestCases > 1 and float(numTestCases).is_integer():
testCasePenalty = 1.0 / numTestCases
else:
print_stderr(
"Please update your testCase value to be a whole integer greater than 0."
)
send_feedback(
0.0,
"Please reach out to course staff via discussion forums, to report a grader error."
)
return
# Find the learner's submission ----------------------------------------------
# The directory /shared/submission/ is the standard submission directory across all courses.
# This is a readonly directory. If you'd like the students to submit a zip with multiple files,
# please ensure that the grader first moves the files to a folder with the correct permissions to unzip.
submission_location = "/shared/submission/"
# Each partId is evaluated one at a time; thus, only one submission file will be stored
# at a time in the /shared/submission/ directory.
for file in os.listdir(submission_location):
if file.endswith(".py"):
learnerFile = file
else:
learnerFile = None
if learnerFile is None:
send_feedback(0.0, "Your file may not have the right extension.")
return
# Save the submission to /grader/ folder, which has executable permissions
sub_source = submission_location + learnerFile
sub_destination = '/grader/submission.py'
shutil.copyfile(sub_source, sub_destination)
import submission
# Generate test cases ------------------------------------------------------
try:
testCases = createTests(numTestCases)
except Exception as e:
print_stderr("createTests returned this error: " + str(e))
send_feedback(
0.0,
"Please reach out to course staff via discussion forums, to report a grader error."
)
return
# Find matching part Id and corresponding test case ------------------------
testCase = match_partId(partId, testCases)
if testCase is None:
print_stderr(
"Cannot find matching partId. Please double check your partId's")
send_feedback(
0.0,
"Please verify that you have submitted to the proper part of the assignment."
)
return
# Run the learner submission -----------------------------------------------
# Number of test cases failed.
numTestCasesFailed = 0
try:
learnerOutput = [submission.main(x) for x in testCase["input"]]
except Exception as e:
send_feedback(0.0, "Your code returned this error: " + str(e))
return
for i in range(0, numTestCases):
if testCase["output"][i] != learnerOutput[i]:
numTestCasesFailed += 1
# Calculate score and send feedback ----------------------------------------
totalPenalty = min(1.0, (testCasePenalty * numTestCasesFailed))
finalFractionalScore = 1.0 - totalPenalty
if numTestCasesFailed > 0:
feedback = "Your solution failed " + str(
numTestCasesFailed) + " out of " + str(
numTestCases) + " test cases. Please try again!"
else:
feedback = "Great job! You passed all test cases."
send_feedback(finalFractionalScore, feedback)
def main():
# Define # of test cases per code block and # of graded code blocks -------------------------------------
# Please ensure that the numTestCases and numGradedFuncs are integers >= 1.
numTestCases = 5
numGradedFuncs = 2
if numTestCases >= 1 and float(numTestCases).is_integer(
) and numGradedFuncs >= 1 and float(numGradedFuncs).is_integer():
testCasePenalty = 1.0 / (numTestCases * numGradedFuncs)
else:
print_stderr(
"Please check that numTestCases and numGradedFuncs are whole integers greater than 0."
)
send_feedback(
0.0,
"Please reach out to course staff via discussion forums, to report a grader error."
)
return
# Find the learner's submission and create appropriate file ----------------------------------------------
# The directory /shared/submission/ is the standard submission directory across all courses.
# This is a readonly directory. If you'd like the students to submit a zip with multiple files,
# please ensure that the grader first moves the files to a folder with the correct permissions to unzip.
submission_location = "/shared/submission/"
# Set identifier for output file and graded code
graded_id = "# GRADED FUNCTION:"
submission_destination = "/grader/" #"submissions/"
for file in os.listdir(submission_location):
if file.endswith(".json"):
nb_output = file
else:
nb_output = None
if nb_output is None:
send_feedback(
0.0,
"Please reach out to course staff via discussion forums, to report a grader error."
)
return
# Converts notebook output to submission.<extension> and saves in /grader/ folder, which has executable permissions
try:
make_submission(submission_location + nb_output, graded_id,
submission_destination)
except Exception as e:
print_stderr("make_submission returned this error: " + str(e))
send_feedback(
0.0,
"Please reach out to course staff via discussion forums, to report a grader error."
)
return
# Generate test cases ------------------------------------------------------
try:
testCases = createTests(numTestCases)
except Exception as e:
print_stderr("createTests returned this error: " + str(e))
send_feedback(
0.0,
"Please reach out to course staff via discussion forums, to report a grader error."
)
return
# Run the learner submission -----------------------------------------------
# import learner graded functions
sys.path.append(submission_destination)
try:
from submission import factors1, factors2
except Exception as e:
send_feedback(0.0, "Your code returned this error: " + str(e))
return
# Number of test cases failed.
numTestCasesFailed = 0
# Specific feedback flags
factors1_feedback = 0
factors2_feedback = 0
try:
#stdout_redirected prevents print statements from learner submission
#from being stored in stdout
with stdout_redirected():
learnerOutput = [
factors1(x) for x in testCases["factors1"]["input"]
]
except Exception as e:
send_feedback(0.0, "Your code returned this error: " + str(e))
return
for j in range(0, numTestCases):
if testCases["factors1"]["output"][j] != learnerOutput[j]:
numTestCasesFailed += 1
factors1_feedback = 1
try:
#stdout_redirected prevents print statements from learner submission
#from being stored in stdout
with stdout_redirected():
learnerOutput = [
factors2(x) for x in testCases["factors2"]["input"]
]
except Exception as e:
send_feedback(0.0, "Your code returned this error: " + str(e))
return
for j in range(0, numTestCases):
if testCases["factors2"]["output"][j] != learnerOutput[j]:
numTestCasesFailed += 1
factors2_feedback = 1
# Calculate score and send feedback ----------------------------------------
totalPenalty = min(1.0, (testCasePenalty * numTestCasesFailed))
finalFractionalScore = 1.0 - totalPenalty
if numTestCasesFailed > 0:
feedback = "Your solution failed " + str(
numTestCasesFailed) + " out of " + str(
numGradedFuncs * numTestCases) + " test cases."
if factors1_feedback:
feedback += " Test case(s) failed in factors1."
if factors2_feedback:
feedback += " Test case(s) failed in factors2."
feedback += " Please try again!"
else:
feedback = "Great job! You passed all test cases."
send_feedback(finalFractionalScore, feedback)
import base64
import os
import hashlib
import hmac
import pyaes
from util import assert_bytes, InvalidPassword, to_bytes, to_string
from util import print_stderr
#from x11hash import getPoWHash
try:
from Cryptodome.Cipher import AES
except:
print_stderr('[crypto] warning: Cryptodome library not available,'
' falling back to pyaes')
AES = None
class InvalidPadding(Exception):
pass
def append_PKCS7_padding(data):
assert_bytes(data)
padlen = 16 - (len(data) % 16)
return data + bytes([padlen]) * padlen
def strip_PKCS7_padding(data):
assert_bytes(data)