def getUserUploadedMd5Helper(courseId, assignmentId, username, strout):
"""Get the current MD5 sum submitted for a given username on a given assignment"""
try:
vmcfg = StorerCourseConfig(CourseList().course_config(courseId))
except:
traceback.print_exc(file = strout)
return json.dumps({'errorType' : ERR_EXCEPTION,
'errorMessage' : "",
'errorTrace' : strout.get()})
(_, account) = getAssignmentAccountName(courseId, assignmentId, username, strout)
vmpaths = paths.VmcheckerPaths(vmcfg.root_path())
submission_dir = vmpaths.dir_cur_submission_root(assignmentId, account)
md5_fpath = paths.submission_md5_file(submission_dir)
md5_result = {}
try:
if os.path.exists(paths.submission_config_file(submission_dir)) and os.path.isfile(md5_fpath):
sss = submissions.Submissions(vmpaths)
upload_time_str = sss.get_upload_time_str(assignmentId, account)
md5_result['fileExists'] = True
with open(md5_fpath, 'r') as f:
md5_result['md5Sum'] = f.read(32)
md5_result['uploadTime'] = upload_time_str
else:
md5_result['fileExists'] = False
return json.dumps(md5_result)
except:
traceback.print_exc(file = strout)
return json.dumps({'errorType' : ERR_EXCEPTION,
'errorMessage' : "",
'errorTrace' : strout.get()})
def getUserUploadedMd5(req, courseId, assignmentId, username):
"""Get the current MD5 sum submitted for a given username on a given assignment"""
req.content_type = 'text/html'
strout = OutputString()
try:
vmcfg = config.CourseConfig(CourseList().course_config(courseId))
except:
traceback.print_exc(file=strout)
return json.dumps({
'errorType': ERR_EXCEPTION,
'errorMessage': "",
'errorTrace': strout.get()
})
vmpaths = paths.VmcheckerPaths(vmcfg.root_path())
submission_dir = vmpaths.dir_cur_submission_root(assignmentId, username)
md5_fpath = paths.submission_md5_file(submission_dir)
strout = OutputString()
md5_result = {}
try:
if os.path.exists(paths.submission_config_file(
submission_dir)) and os.path.isfile(md5_fpath):
sss = submissions.Submissions(vmpaths)
upload_time_str = sss.get_upload_time_str(assignmentId, username)
md5_result['fileExists'] = True
with open(md5_fpath, 'r') as f:
md5_result['md5Sum'] = f.read(32)
md5_result['uploadTime'] = upload_time_str
else:
md5_result['fileExists'] = False
return json.dumps(md5_result)
except:
traceback.print_exc(file=strout)
return json.dumps({
'errorType': ERR_EXCEPTION,
'errorMessage': "",
'errorTrace': strout.get()
})
def getUserUploadedMd5(req, courseId, assignmentId, username):
"""Get the current MD5 sum submitted for a given username on a given assignment"""
req.content_type = 'text/html'
strout = websutil.OutputString()
try:
vmcfg = config.CourseConfig(CourseList().course_config(courseId))
except:
traceback.print_exc(file = strout)
return json.dumps({'errorType' : ERR_EXCEPTION,
'errorMessage' : "",
'errorTrace' : strout.get()})
vmpaths = paths.VmcheckerPaths(vmcfg.root_path())
submission_dir = vmpaths.dir_cur_submission_root(assignmentId, username)
md5_fpath = paths.submission_md5_file(submission_dir)
strout = websutil.OutputString()
md5_result = {}
try:
if os.path.exists(paths.submission_config_file(submission_dir)) and os.path.isfile(md5_fpath):
sss = submissions.Submissions(vmpaths)
upload_time_str = sss.get_upload_time_str(assignmentId, username)
md5_result['fileExists'] = True
with open(md5_fpath, 'r') as f:
md5_result['md5Sum'] = f.read(32)
md5_result['uploadTime'] = upload_time_str
else:
md5_result['fileExists'] = False
return json.dumps(md5_result)
except:
traceback.print_exc(file = strout)
return json.dumps({'errorType' : ERR_EXCEPTION,
'errorMessage' : "",
'errorTrace' : strout.get()})
def validate_md5_submission(courseId, assignmentId, username, archiveFileName):
"""Checks whether a MD5Submission is valid:
* checks that the uploaded md5 corresponds to the one of the machine
* checks that the archive uploaded by the student is a zip file
On success returns 'ok'.
On failure reports the source of the failure:
- 'md5' - the uploaded md5 does not match the one computed on the archive
- 'zip' - the uploaded archive is not zip.
"""
md5_calculated = ""
md5_uploaded = ""
archive_file_type = ""
client = paramiko.SSHClient()
try:
vmcfg = CourseConfig(CourseList().course_config(courseId))
assignments = vmcfg.assignments()
storage_hostname = assignments.get(assignmentId,
'AssignmentStorageHost')
storage_username = assignments.get(assignmentId,
'AssignmentStorageQueryUser')
storage_basepath = assignments.storage_basepath(assignmentId, username)
client.load_system_host_keys(vmcfg.known_hosts_file())
client.connect(storage_hostname,
username=storage_username,
key_filename=vmcfg.storer_sshid(),
look_for_keys=False)
archive_abs = os.path.join(storage_basepath, username, archiveFileName)
# XXX: This will take ages to compute! I wonder how many
# connections will Apache hold.
stdin, stdout, stderr = client.exec_command("md5sum " +
QuoteForPOSIX(archive_abs))
md5_calculated = stdout.readline().split()[0]
for f in [stdin, stdout, stderr]:
f.close()
stdin, stdout, stderr = client.exec_command("file " +
QuoteForPOSIX(archive_abs))
archive_file_type = stdout.readline()[len(archive_abs):].split(
)[1].lower()
for f in [stdin, stdout, stderr]:
f.close()
vmpaths = paths.VmcheckerPaths(vmcfg.root_path())
submission_dir = vmpaths.dir_cur_submission_root(
assignmentId, username)
md5_fpath = paths.submission_md5_file(submission_dir)
if os.path.isfile(md5_fpath):
with open(md5_fpath, 'r') as f:
md5_uploaded = f.read(32)
except:
strout = OutputString()
traceback.print_exc(file=strout)
return json.dumps({'errorTrace': strout.get()}, indent=4)
finally:
client.close()
if not md5_calculated == md5_uploaded:
return "md5" # report the type of the problem
if not archive_file_type == "zip":
return "zip" # report the type of the problem
return "ok" # no problemo
def validate_md5_submission(courseId, assignmentId, account, archiveFileName):
"""Checks whether a MD5Submission is valid:
* checks that the uploaded md5 corresponds to the one of the machine
* checks that the archive uploaded by the student is a zip file
On success returns (True,).
On failure reports the source of the failure:
- (False, 'md5') - the uploaded md5 does not match the one computed on the archive
- (False, 'zip') - the uploaded archive is not zip.
"""
md5_calculated = ""
md5_uploaded = ""
archive_file_type = ""
client = paramiko.SSHClient()
try:
vmcfg = StorerCourseConfig(CourseList().course_config(courseId))
assignments = vmcfg.assignments()
storage_hostname = assignments.get(assignmentId, 'AssignmentStorageHost')
storage_username = assignments.get(assignmentId, 'AssignmentStorageQueryUser')
storage_basepath = assignments.storage_basepath( \
assignments.get(assignmentId, 'AssignmentStorageBasepath'), account)
client.load_system_host_keys(vmcfg.known_hosts_file())
client.connect(storage_hostname,
username=storage_username,
key_filename=vmcfg.storer_sshid(),
look_for_keys=False)
archive_abs = os.path.join(storage_basepath, account, archiveFileName)
# XXX: This will take ages to compute! I wonder how many
# connections will Apache hold.
stdin, stdout, stderr = client.exec_command("md5sum " + QuoteForPOSIX(archive_abs))
md5_calculated = stdout.readline().split()[0]
for f in [stdin, stdout, stderr]: f.close()
stdin, stdout, stderr = client.exec_command("file " + QuoteForPOSIX(archive_abs))
archive_file_type = stdout.readline()[len(archive_abs):].split()[1].lower()
for f in [stdin, stdout, stderr]: f.close()
vmpaths = paths.VmcheckerPaths(vmcfg.root_path())
submission_dir = vmpaths.dir_cur_submission_root(assignmentId, account)
md5_fpath = paths.submission_md5_file(submission_dir)
if os.path.isfile(md5_fpath):
with open(md5_fpath, 'r') as f:
md5_uploaded = f.read(32)
except:
strout = OutputString()
traceback.print_exc(file = strout)
return json.dumps({'errorTrace' : strout.get()}, indent=4)
finally:
client.close()
if not md5_calculated == md5_uploaded:
return (False, MD5_ERR_BAD_MD5) # report the type of the problem
if not archive_file_type == "zip":
return (False, MD5_ERR_BAD_ZIP) # report the type of the problem
return (True,) # no problemo
