def UpdateSQPr(pr, sig=None):
if sig is None:
session['updatesqpr'] = pr
return pr
else:
orig = SHA256.new(session['updatesqpr'].encode())
if pkcs.new(RSA.importKey(session['pubkey'])).verify(orig, bytes.fromhex(sig)):
try:
api = mc.getApi()
txid = mc.publishItem(api, session['username'], 'updatesqlpr', session['updatesqpr'], sig)
except:
print("MultiChain Error")
return "D"
else:
session.pop('updatesqpr', None)
return "S"
def UpdatePk(uid, pubkey, sig=None):
if sig is None:
data = uid+','+pubkey+',updatepubkey'
session['updatepk'] = data
return data
else:
orig = SHA256.new(session['updatepk'].encode())
if pkcs.new(RSA.importKey(session['pubkey'])).verify(orig, bytes.fromhex(sig)):
try:
api = mc.getApi()
txid = mc.publishItem(api, session['username'], 'updatepubkey', session['updatepk'], sig)
except:
print("MultiChain Error")
return "D"
else:
session.pop('updatepk', None)
return "S"
def ExecFunc(func, param, sig=None):
if sig is None:
data = func+'||'+param
session['execfunc'] = data
return data
else:
orig = SHA256.new(session['execfunc'].encode())
if pkcs.new(RSA.importKey(session['pubkey'])).verify(orig, bytes.fromhex(sig)):
try:
api = mc.getApi()
txid = mc.publishItem(api, session['username'], session['execfunc'].split('||')[0], session['execfunc'], sig)
except:
print("MultiChain Error")
return "D"
else:
session.pop('execfunc', None)
return "S"
def InstrCourses(uid, courses, sig=None):
if sig is None:
data = uid+'||'+courses+'||instrcourses'
session['instrc'] = data
return data
else:
orig = SHA256.new(session['instrc'].encode())
if pkcs.new(RSA.importKey(session['pubkey'])).verify(orig, bytes.fromhex(sig)):
try:
api = mc.getApi()
txid = mc.publishItem(api, session['username'], 'instrcourses', session['instrc'], sig)
except:
print("MultiChain Error")
return "D"
else:
session.pop('instrc', None)
return "S"
def Update(uid, course, newGrade, sig=None):
data = uid + ',' + course + ',' + newGrade + ',gradeupdate'
if sig is None:
session['update'] = data
return data
else:
orig = SHA256.new(session['update'].encode())
if pkcs.new(RSA.importKey(session['pubkey'])).verify(
orig, bytes.fromhex(sig)):
import mc
try:
api = mc.getApi()
txid = mc.publishItem(api, session['username'], 'gradeupdate',
session['update'], sig)
except:
print("MultiChain Error")
return "D"
else:
session.pop('update', None)
return "S"
else:
return "D"
def Insert(data, count, sig=None):
if sig is None:
v = [tuple(i.values()) for i in data]
s = map(list, zip(*v))
dt = "||".join([",".join(i) for i in s]) + "||gradeinsert"
session['insert'] = dt
return dt
else:
orig = SHA256.new(session['insert'].encode())
if pkcs.new(RSA.importKey(session['pubkey'])).verify(
orig, bytes.fromhex(sig)):
import mc
try:
api = mc.getApi()
txid = mc.publishItem(api, session['username'], 'gradeinsert',
session['insert'], sig)
except:
print("MultiChain Error")
return jsonify({'status': 'D'})
else:
session.pop('insert', None)
return jsonify({'status': 'S'})
else:
return jsonify({'status': 'D'})