def request_mai_id():
"""Generate an unused mai_id."""
max_tries = 20
found = False
for i in range(max_tries):
mai_id = crypto.sha512_hash_hex(str(request.headers) + str(time.time()))
if MetaAppInstance.objects(mai_id=mai_id).count() == 0:
found = True
break
if not found:
abort(500)
return mai_id
def mai_pubkey(mai_id):
"""Process a public key uploaded for a MetaAppInstance."""
# pversion = request.args.get('pversion')
pubkeyfile = request.files["pubkeyfile"]
if not pubkeyfile:
return "No pubkeyfile uploaded -> key not uploaded.\n"
if not file_allowed(us_maipubkeys, pubkeyfile):
return "Filetype not allowed -> key not uploaded.\n"
if MetaAppInstance.objects(mai_id=mai_id).count() >= 1:
return ("This Meta App Instance (id=%s) already exists and has a key " "-> key not uploaded.\n") % mai_id
mai = MetaAppInstance(mai_id=mai_id, pubkey_ec=pubkeyfile.read())
mai.save()
return "Key saved.\n"
def ea_data(mai_id, name):
"""Process data uploaded by a MetaAppInstance for an ExpApp."""
# pversion = request.args.get('pversion')
datafile = request.files["datafile"]
sigfile = request.files["sigfile"]
if not datafile:
return "No datafile uploaded -> no data uploaded.\n"
if not file_allowed(us_eadata, datafile):
return "Filetype not allowed -> no data uploaded.\n"
if not sigfile:
return "No sigfile uploaded -> no data uploaded.\n"
if not file_allowed(us_maisignatures, sigfile):
return "Filetype not allowed -> no data uploaded.\n"
mai = MetaAppInstance.objects(mai_id=mai_id).first()
if not mai:
return ("Unknown MetaAppInstance (id=%s) -> no data " "uploaded.\n") % mai_id
ecv = crypto.ECVerifier(mai)
datastring = datafile.read()
if not ecv.verify(datastring, sigfile):
return "Signature invalid -> no data uploaded.\n"
ea = ExpApp.objects(name=name).first()
if not ea:
return ("Unknown ExpApp (name=%s) -> no data " "uploaded.\n") % name
r = Result(data=json.loads(datastring))
r.metaappinstance = mai
ea.results.append(r)
ea.save()
return "Data uploaded.\n"
