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faber.py
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faber.py
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import asyncio
import json
import logging
import os
import sys
import time
import datetime
from aiohttp import ClientError
from qrcode import QRCode
sys.path.append(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
from runners.agent_container import ( # noqa:E402
arg_parser,
create_agent_with_args,
AriesAgent,
)
from runners.support.agent import ( # noqa:E402
CRED_FORMAT_INDY,
CRED_FORMAT_JSON_LD,
SIG_TYPE_BLS,
)
from runners.support.utils import ( # noqa:E402
log_msg,
log_status,
prompt,
prompt_loop,
)
CRED_PREVIEW_TYPE = "https://didcomm.org/issue-credential/2.0/credential-preview"
SELF_ATTESTED = os.getenv("SELF_ATTESTED")
TAILS_FILE_COUNT = int(os.getenv("TAILS_FILE_COUNT", 100))
logging.basicConfig(level=logging.WARNING)
LOGGER = logging.getLogger(__name__)
class FaberAgent(AriesAgent):
def __init__(
self,
ident: str,
http_port: int,
admin_port: int,
no_auto: bool = False,
endorser_role: str = None,
revocation: bool = False,
**kwargs,
):
super().__init__(
ident,
http_port,
admin_port,
prefix="Faber",
no_auto=no_auto,
endorser_role=endorser_role,
revocation=revocation,
**kwargs,
)
self.connection_id = None
self._connection_ready = None
self.cred_state = {}
# TODO define a dict to hold credential attributes
# based on cred_def_id
self.cred_attrs = {}
async def detect_connection(self):
await self._connection_ready
self._connection_ready = None
@property
def connection_ready(self):
return self._connection_ready.done() and self._connection_ready.result()
def generate_credential_offer(self, aip, cred_type, cred_def_id, exchange_tracing):
age = 24
d = datetime.date.today()
birth_date = datetime.date(d.year - age, d.month, d.day)
birth_date_format = "%Y%m%d"
if aip == 10:
# define attributes to send for credential
self.cred_attrs[cred_def_id] = {
"name": "Alice Smith",
"date": "2018-05-28",
"degree": "Maths",
"birthdate_dateint": birth_date.strftime(birth_date_format),
"timestamp": str(int(time.time())),
}
cred_preview = {
"@type": CRED_PREVIEW_TYPE,
"attributes": [
{"name": n, "value": v}
for (n, v) in self.cred_attrs[cred_def_id].items()
],
}
offer_request = {
"connection_id": self.connection_id,
"cred_def_id": cred_def_id,
"comment": f"Offer on cred def id {cred_def_id}",
"auto_remove": False,
"credential_preview": cred_preview,
"trace": exchange_tracing,
}
return offer_request
elif aip == 20:
if cred_type == CRED_FORMAT_INDY:
self.cred_attrs[cred_def_id] = {
"name": "Alice Smith",
"date": "2018-05-28",
"degree": "Maths",
"birthdate_dateint": birth_date.strftime(birth_date_format),
"timestamp": str(int(time.time())),
}
cred_preview = {
"@type": CRED_PREVIEW_TYPE,
"attributes": [
{"name": n, "value": v}
for (n, v) in self.cred_attrs[cred_def_id].items()
],
}
offer_request = {
"connection_id": self.connection_id,
"comment": f"Offer on cred def id {cred_def_id}",
"auto_remove": False,
"credential_preview": cred_preview,
"filter": {"indy": {"cred_def_id": cred_def_id}},
"trace": exchange_tracing,
}
return offer_request
elif cred_type == CRED_FORMAT_JSON_LD:
offer_request = {
"connection_id": self.connection_id,
"filter": {
"ld_proof": {
"credential": {
"@context": [
"https://www.w3.org/2018/credentials/v1",
"https://w3id.org/citizenship/v1",
"https://w3id.org/security/bbs/v1",
],
"type": [
"VerifiableCredential",
"PermanentResident",
],
"id": "https://credential.example.com/residents/1234567890",
"issuer": self.did,
"issuanceDate": "2020-01-01T12:00:00Z",
"credentialSubject": {
"type": ["PermanentResident"],
"givenName": "ALICE",
"familyName": "SMITH",
"gender": "Female",
"birthCountry": "Bahamas",
"birthDate": "1958-07-17",
},
},
"options": {"proofType": SIG_TYPE_BLS},
}
},
}
return offer_request
else:
raise Exception(f"Error invalid credential type: {self.cred_type}")
else:
raise Exception(f"Error invalid AIP level: {self.aip}")
def generate_proof_request_web_request(
self, aip, cred_type, revocation, exchange_tracing, connectionless=False
):
age = 18
d = datetime.date.today()
birth_date = datetime.date(d.year - age, d.month, d.day)
birth_date_format = "%Y%m%d"
if aip == 10:
req_attrs = [
{
"name": "name",
"restrictions": [{"schema_name": "degree schema"}],
},
{
"name": "date",
"restrictions": [{"schema_name": "degree schema"}],
},
]
if revocation:
req_attrs.append(
{
"name": "degree",
"restrictions": [{"schema_name": "degree schema"}],
"non_revoked": {"to": int(time.time() - 1)},
},
)
else:
req_attrs.append(
{
"name": "degree",
"restrictions": [{"schema_name": "degree schema"}],
}
)
if SELF_ATTESTED:
# test self-attested claims
req_attrs.append(
{"name": "self_attested_thing"},
)
req_preds = [
# test zero-knowledge proofs
{
"name": "birthdate_dateint",
"p_type": "<=",
"p_value": int(birth_date.strftime(birth_date_format)),
"restrictions": [{"schema_name": "degree schema"}],
}
]
indy_proof_request = {
"name": "Proof of Education",
"version": "1.0",
"requested_attributes": {
f"0_{req_attr['name']}_uuid": req_attr for req_attr in req_attrs
},
"requested_predicates": {
f"0_{req_pred['name']}_GE_uuid": req_pred for req_pred in req_preds
},
}
if revocation:
indy_proof_request["non_revoked"] = {"to": int(time.time())}
proof_request_web_request = {
"proof_request": indy_proof_request,
"trace": exchange_tracing,
}
if not connectionless:
proof_request_web_request["connection_id"] = self.connection_id
return proof_request_web_request
elif aip == 20:
if cred_type == CRED_FORMAT_INDY:
req_attrs = [
{
"name": "name",
"restrictions": [{"schema_name": "degree schema"}],
},
{
"name": "date",
"restrictions": [{"schema_name": "degree schema"}],
},
]
if revocation:
req_attrs.append(
{
"name": "degree",
"restrictions": [{"schema_name": "degree schema"}],
"non_revoked": {"to": int(time.time() - 1)},
},
)
else:
req_attrs.append(
{
"name": "degree",
"restrictions": [{"schema_name": "degree schema"}],
}
)
if SELF_ATTESTED:
# test self-attested claims
req_attrs.append(
{"name": "self_attested_thing"},
)
req_preds = [
# test zero-knowledge proofs
{
"name": "birthdate_dateint",
"p_type": "<=",
"p_value": int(birth_date.strftime(birth_date_format)),
"restrictions": [{"schema_name": "degree schema"}],
}
]
indy_proof_request = {
"name": "Proof of Education",
"version": "1.0",
"requested_attributes": {
f"0_{req_attr['name']}_uuid": req_attr for req_attr in req_attrs
},
"requested_predicates": {
f"0_{req_pred['name']}_GE_uuid": req_pred
for req_pred in req_preds
},
}
if revocation:
indy_proof_request["non_revoked"] = {"to": int(time.time())}
proof_request_web_request = {
"presentation_request": {"indy": indy_proof_request},
"trace": exchange_tracing,
}
if not connectionless:
proof_request_web_request["connection_id"] = self.connection_id
return proof_request_web_request
elif cred_type == CRED_FORMAT_JSON_LD:
proof_request_web_request = {
"comment": "test proof request for json-ld",
"presentation_request": {
"dif": {
"options": {
"challenge": "3fa85f64-5717-4562-b3fc-2c963f66afa7",
"domain": "4jt78h47fh47",
},
"presentation_definition": {
"id": "32f54163-7166-48f1-93d8-ff217bdb0654",
"format": {"ldp_vp": {"proof_type": [SIG_TYPE_BLS]}},
"input_descriptors": [
{
"id": "citizenship_input_1",
"name": "EU Driver's License",
"schema": [
{
"uri": "https://www.w3.org/2018/credentials#VerifiableCredential"
},
{
"uri": "https://w3id.org/citizenship#PermanentResident"
},
],
"constraints": {
"limit_disclosure": "required",
"is_holder": [
{
"directive": "required",
"field_id": [
"1f44d55f-f161-4938-a659-f8026467f126"
],
}
],
"fields": [
{
"id": "1f44d55f-f161-4938-a659-f8026467f126",
"path": [
"$.credentialSubject.familyName"
],
"purpose": "The claim must be from one of the specified person",
"filter": {"const": "SMITH"},
},
{
"path": [
"$.credentialSubject.givenName"
],
"purpose": "The claim must be from one of the specified person",
},
],
},
}
],
},
}
},
}
if not connectionless:
proof_request_web_request["connection_id"] = self.connection_id
return proof_request_web_request
else:
raise Exception(f"Error invalid credential type: {self.cred_type}")
else:
raise Exception(f"Error invalid AIP level: {self.aip}")
async def main(args):
faber_agent = await create_agent_with_args(args, ident="faber")
try:
log_status(
"#1 Provision an agent and wallet, get back configuration details"
+ (
f" (Wallet type: {faber_agent.wallet_type})"
if faber_agent.wallet_type
else ""
)
)
agent = FaberAgent(
"faber.agent",
faber_agent.start_port,
faber_agent.start_port + 1,
genesis_data=faber_agent.genesis_txns,
genesis_txn_list=faber_agent.genesis_txn_list,
no_auto=faber_agent.no_auto,
tails_server_base_url=faber_agent.tails_server_base_url,
revocation=faber_agent.revocation,
timing=faber_agent.show_timing,
multitenant=faber_agent.multitenant,
mediation=faber_agent.mediation,
wallet_type=faber_agent.wallet_type,
seed=faber_agent.seed,
aip=faber_agent.aip,
endorser_role=faber_agent.endorser_role,
)
faber_schema_name = "degree schema"
faber_schema_attrs = [
"name",
"date",
"degree",
"birthdate_dateint",
"timestamp",
]
if faber_agent.cred_type == CRED_FORMAT_INDY:
faber_agent.public_did = True
await faber_agent.initialize(
the_agent=agent,
schema_name=faber_schema_name,
schema_attrs=faber_schema_attrs,
create_endorser_agent=(faber_agent.endorser_role == "author")
if faber_agent.endorser_role
else False,
)
elif faber_agent.cred_type == CRED_FORMAT_JSON_LD:
faber_agent.public_did = True
await faber_agent.initialize(the_agent=agent)
else:
raise Exception("Invalid credential type:" + faber_agent.cred_type)
# generate an invitation for Alice
await faber_agent.generate_invitation(display_qr=True, wait=True)
exchange_tracing = False
options = (
" (1) Issue Credential\n"
" (2) Send Proof Request\n"
" (2a) Send *Connectionless* Proof Request (requires a Mobile client)\n"
" (3) Send Message\n"
" (4) Create New Invitation\n"
)
if faber_agent.revocation:
options += " (5) Revoke Credential\n" " (6) Publish Revocations\n"
if faber_agent.endorser_role and faber_agent.endorser_role == "author":
options += " (D) Set Endorser's DID\n"
if faber_agent.multitenant:
options += " (W) Create and/or Enable Wallet\n"
options += " (T) Toggle tracing on credential/proof exchange\n"
options += " (X) Exit?\n[1/2/3/4/{}{}T/X] ".format(
"5/6/" if faber_agent.revocation else "",
"W/" if faber_agent.multitenant else "",
)
async for option in prompt_loop(options):
if option is not None:
option = option.strip()
if option is None or option in "xX":
break
elif option in "dD" and faber_agent.endorser_role:
endorser_did = await prompt("Enter Endorser's DID: ")
await faber_agent.agent.admin_POST(
f"/transactions/{faber_agent.agent.connection_id}/set-endorser-info",
params={"endorser_did": endorser_did},
)
elif option in "wW" and faber_agent.multitenant:
target_wallet_name = await prompt("Enter wallet name: ")
include_subwallet_webhook = await prompt(
"(Y/N) Create sub-wallet webhook target: "
)
if include_subwallet_webhook.lower() == "y":
created = await faber_agent.agent.register_or_switch_wallet(
target_wallet_name,
webhook_port=faber_agent.agent.get_new_webhook_port(),
public_did=True,
mediator_agent=faber_agent.mediator_agent,
endorser_agent=faber_agent.endorser_agent,
)
else:
created = await faber_agent.agent.register_or_switch_wallet(
target_wallet_name,
public_did=True,
mediator_agent=faber_agent.mediator_agent,
endorser_agent=faber_agent.endorser_agent,
cred_type=faber_agent.cred_type,
)
# create a schema and cred def for the new wallet
# TODO check first in case we are switching between existing wallets
if created:
# TODO this fails because the new wallet doesn't get a public DID
await faber_agent.create_schema_and_cred_def(
schema_name=faber_schema_name,
schema_attrs=faber_schema_attrs,
)
elif option in "tT":
exchange_tracing = not exchange_tracing
log_msg(
">>> Credential/Proof Exchange Tracing is {}".format(
"ON" if exchange_tracing else "OFF"
)
)
elif option == "1":
log_status("#13 Issue credential offer to X")
if faber_agent.aip == 10:
offer_request = faber_agent.agent.generate_credential_offer(
faber_agent.aip, None, faber_agent.cred_def_id, exchange_tracing
)
await faber_agent.agent.admin_POST(
"/issue-credential/send-offer", offer_request
)
elif faber_agent.aip == 20:
if faber_agent.cred_type == CRED_FORMAT_INDY:
offer_request = faber_agent.agent.generate_credential_offer(
faber_agent.aip,
faber_agent.cred_type,
faber_agent.cred_def_id,
exchange_tracing,
)
elif faber_agent.cred_type == CRED_FORMAT_JSON_LD:
offer_request = faber_agent.agent.generate_credential_offer(
faber_agent.aip,
faber_agent.cred_type,
None,
exchange_tracing,
)
else:
raise Exception(
f"Error invalid credential type: {faber_agent.cred_type}"
)
await faber_agent.agent.admin_POST(
"/issue-credential-2.0/send-offer", offer_request
)
else:
raise Exception(f"Error invalid AIP level: {faber_agent.aip}")
elif option == "2":
log_status("#20 Request proof of degree from alice")
if faber_agent.aip == 10:
proof_request_web_request = (
faber_agent.agent.generate_proof_request_web_request(
faber_agent.aip,
faber_agent.cred_type,
faber_agent.revocation,
exchange_tracing,
)
)
await faber_agent.agent.admin_POST(
"/present-proof/send-request", proof_request_web_request
)
pass
elif faber_agent.aip == 20:
if faber_agent.cred_type == CRED_FORMAT_INDY:
proof_request_web_request = (
faber_agent.agent.generate_proof_request_web_request(
faber_agent.aip,
faber_agent.cred_type,
faber_agent.revocation,
exchange_tracing,
)
)
elif faber_agent.cred_type == CRED_FORMAT_JSON_LD:
proof_request_web_request = (
faber_agent.agent.generate_proof_request_web_request(
faber_agent.aip,
faber_agent.cred_type,
faber_agent.revocation,
exchange_tracing,
)
)
else:
raise Exception(
"Error invalid credential type:" + faber_agent.cred_type
)
await agent.admin_POST(
"/present-proof-2.0/send-request", proof_request_web_request
)
else:
raise Exception(f"Error invalid AIP level: {faber_agent.aip}")
elif option == "2a":
log_status("#20 Request * Connectionless * proof of degree from alice")
if faber_agent.aip == 10:
proof_request_web_request = (
faber_agent.agent.generate_proof_request_web_request(
faber_agent.aip,
faber_agent.cred_type,
faber_agent.revocation,
exchange_tracing,
connectionless=True,
)
)
proof_request = await faber_agent.agent.admin_POST(
"/present-proof/create-request", proof_request_web_request
)
pres_req_id = proof_request["presentation_exchange_id"]
url = (
"http://"
+ os.getenv("DOCKERHOST").replace(
"{PORT}", str(faber_agent.agent.admin_port + 1)
)
+ "/webhooks/pres_req/"
+ pres_req_id
+ "/"
)
log_msg(f"Proof request url: {url}")
qr = QRCode(border=1)
qr.add_data(url)
log_msg(
"Scan the following QR code to accept the proof request from a mobile agent."
)
qr.print_ascii(invert=True)
elif faber_agent.aip == 20:
if faber_agent.cred_type == CRED_FORMAT_INDY:
proof_request_web_request = (
faber_agent.agent.generate_proof_request_web_request(
faber_agent.aip,
faber_agent.cred_type,
faber_agent.revocation,
exchange_tracing,
connectionless=True,
)
)
elif faber_agent.cred_type == CRED_FORMAT_JSON_LD:
proof_request_web_request = (
faber_agent.agent.generate_proof_request_web_request(
faber_agent.aip,
faber_agent.cred_type,
faber_agent.revocation,
exchange_tracing,
connectionless=True,
)
)
else:
raise Exception(
"Error invalid credential type:" + faber_agent.cred_type
)
proof_request = await faber_agent.agent.admin_POST(
"/present-proof-2.0/create-request", proof_request_web_request
)
pres_req_id = proof_request["pres_ex_id"]
url = (
"http://"
+ os.getenv("DOCKERHOST").replace(
"{PORT}", str(faber_agent.agent.admin_port + 1)
)
+ "/webhooks/pres_req/"
+ pres_req_id
+ "/"
)
log_msg(f"Proof request url: {url}")
qr = QRCode(border=1)
qr.add_data(url)
log_msg(
"Scan the following QR code to accept the proof request from a mobile agent."
)
qr.print_ascii(invert=True)
else:
raise Exception(f"Error invalid AIP level: {faber_agent.aip}")
elif option == "3":
msg = await prompt("Enter message: ")
await faber_agent.agent.admin_POST(
f"/connections/{faber_agent.agent.connection_id}/send-message",
{"content": msg},
)
elif option == "4":
log_msg(
"Creating a new invitation, please receive "
"and accept this invitation using Alice agent"
)
await faber_agent.generate_invitation(display_qr=True, wait=True)
elif option == "5" and faber_agent.revocation:
rev_reg_id = (await prompt("Enter revocation registry ID: ")).strip()
cred_rev_id = (await prompt("Enter credential revocation ID: ")).strip()
publish = (
await prompt("Publish now? [Y/N]: ", default="N")
).strip() in "yY"
try:
await faber_agent.agent.admin_POST(
"/revocation/revoke",
{
"rev_reg_id": rev_reg_id,
"cred_rev_id": cred_rev_id,
"publish": publish,
"connection_id": faber_agent.agent.connection_id,
# leave out thread_id, let aca-py generate
# "thread_id": "12345678-4444-4444-4444-123456789012",
"comment": "Revocation reason goes here ...",
},
)
except ClientError:
pass
elif option == "6" and faber_agent.revocation:
try:
resp = await faber_agent.agent.admin_POST(
"/revocation/publish-revocations", {}
)
faber_agent.agent.log(
"Published revocations for {} revocation registr{} {}".format(
len(resp["rrid2crid"]),
"y" if len(resp["rrid2crid"]) == 1 else "ies",
json.dumps([k for k in resp["rrid2crid"]], indent=4),
)
)
except ClientError:
pass
if faber_agent.show_timing:
timing = await faber_agent.agent.fetch_timing()
if timing:
for line in faber_agent.agent.format_timing(timing):
log_msg(line)
finally:
terminated = await faber_agent.terminate()
await asyncio.sleep(0.1)
if not terminated:
os._exit(1)
if __name__ == "__main__":
parser = arg_parser(ident="faber", port=8020)
args = parser.parse_args()
ENABLE_PYDEVD_PYCHARM = os.getenv("ENABLE_PYDEVD_PYCHARM", "").lower()
ENABLE_PYDEVD_PYCHARM = ENABLE_PYDEVD_PYCHARM and ENABLE_PYDEVD_PYCHARM not in (
"false",
"0",
)
PYDEVD_PYCHARM_HOST = os.getenv("PYDEVD_PYCHARM_HOST", "localhost")
PYDEVD_PYCHARM_CONTROLLER_PORT = int(
os.getenv("PYDEVD_PYCHARM_CONTROLLER_PORT", 5001)
)
if ENABLE_PYDEVD_PYCHARM:
try:
import pydevd_pycharm
print(
"Faber remote debugging to "
f"{PYDEVD_PYCHARM_HOST}:{PYDEVD_PYCHARM_CONTROLLER_PORT}"
)
pydevd_pycharm.settrace(
host=PYDEVD_PYCHARM_HOST,
port=PYDEVD_PYCHARM_CONTROLLER_PORT,
stdoutToServer=True,
stderrToServer=True,
suspend=False,
)
except ImportError:
print("pydevd_pycharm library was not found")
try:
asyncio.get_event_loop().run_until_complete(main(args))
except KeyboardInterrupt:
os._exit(1)