├── LICENSE
├── Makefile
├── Procfile
├── README.md
├── ethhelper.py
├── requirements.txt
├── run-server.sh
├── server.py
├── static
├── app.js
├── ethers-v4.min.js
├── hello.txt
└── warp.gif
└── templates
├── data.html
├── index.html
└── submit.html
/LICENSE:
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/Makefile:
--------------------------------------------------------------------------------
1 | # A simple way to update Flask Heroku's static files.
2 |
3 | # ----------------------
4 | # Useful variables
5 | # ----------------------
6 | NORM=\033[0m
7 | BOLD=\033[1m
8 | CHECK=\033[32m✔\033[39m
9 | port=5000
10 |
11 |
12 | # ----------------------
13 | # Default build
14 | # ----------------------
15 | build:
16 | @echo "\n⚡ ${BOLD}This might take a minute${NORM} ⚡\n"
17 | @make clone
18 | @make update
19 | @make js
20 | @rm -rf {bootstrap,update}
21 | @echo "\n⚡ ${BOLD}Successfully updated${NORM} ⚡\n"
22 |
23 |
24 | # ----------------------
25 | # Clone Bootstrap && Make
26 | # ----------------------
27 | clone:
28 | @git clone git://github.com/twitter/bootstrap.git
29 | @echo "\n${BOLD}Clone Twitter Bootstrap... ${NORM}${CHECK}\n"
30 | @cd bootstrap; make bootstrap
31 | @cd bootstrap; cp -R less bootstrap/css/less
32 | @cd bootstrap; mv bootstrap ../update
33 |
34 |
35 | # ----------------------
36 | # External JavaScript
37 | # ----------------------
38 | js:
39 | @curl http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js > static/js/jquery.js
40 | @echo "\n${BOLD}Grab latest jQuery... ${NORM}${CHECK}\n"
41 | @curl -L http://git.io/less-1.3.0 > static/js/less.js
42 | @echo "\n${BOLD}Grab latest LESS.js... ${NORM}${CHECK}\n"
43 | @curl http://modernizr.com/downloads/modernizr-2.5.3.js > static/js/modernizr.js
44 | @echo "\n${BOLD}Grab latest Modernizr... ${NORM}${CHECK}\n"
45 |
46 |
47 | # ----------------------
48 | # Update commands
49 | # ----------------------
50 | update:
51 | @rm -rf static/css/less
52 | @mv update/css/* static/css
53 | @mv update/img/* static/img
54 | @mv update/js/* static/js
55 | @echo "\n${BOLD}Update static files... ${NORM}${CHECK}\n"
56 |
--------------------------------------------------------------------------------
/Procfile:
--------------------------------------------------------------------------------
1 | web: gunicorn -w 1 -b 0.0.0.0:$PORT -k gevent server:app --log-level debug
2 |
--------------------------------------------------------------------------------
/README.md:
--------------------------------------------------------------------------------
1 | # simple-flask-metamask
2 | simple flask+metamask integration example
3 |
4 | Live demo here: https://simple-flask-metamask.herokuapp.com/
5 |
6 | Useful sources:
7 |
8 | https://www.toptal.com/ethereum/one-click-login-flows-a-metamask-tutorial
9 |
10 | https://ethereum.stackexchange.com/questions/35486/how-to-verify-metamask-account-holder-is-the-real-owner-of-the-address
11 |
12 | https://web3py.readthedocs.io/en/stable/web3.eth.account.html
13 |
14 | https://flask-jwt-extended.readthedocs.io/en/stable/basic_usage/
15 |
16 | https://flask-jwt-extended.readthedocs.io/en/stable/tokens_in_cookies/
17 |
18 | https://ethereum.stackexchange.com/questions/36790/how-to-view-custom-token-balance-in-ether-wallet-using-web3
19 |
20 |
21 |
--------------------------------------------------------------------------------
/ethhelper.py:
--------------------------------------------------------------------------------
1 | import os
2 | import sys
3 | from web3 import Web3, HTTPProvider
4 |
5 | try:
6 | w3 = Web3(HTTPProvider(os.environ['web3']))
7 | except:
8 | print("[!] WARNING: INVALID HTTPProvider ('web3' env variable)")
9 | sys.exit("NOPE")
10 | erc20abi='''[{"inputs":[{"internalType":"uint256","name":"initialSupply","type":"uint256"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"spender","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Approval","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"from","type":"address"},{"indexed":true,"internalType":"address","name":"to","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"}],"name":"Transfer","type":"event"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"spender","type":"address"}],"name":"allowance","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"approve","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"decimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"subtractedValue","type":"uint256"}],"name":"decreaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"spender","type":"address"},{"internalType":"uint256","name":"addedValue","type":"uint256"}],"name":"increaseAllowance","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"name","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"sender","type":"address"},{"internalType":"address","name":"recipient","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"}]'''
11 |
12 | gstAddress = '0x382f5DfE9eE6e309D1B9D622735e789aFde6BADe'
13 |
14 | gstToken = w3.eth.contract(address=gstAddress,abi=erc20abi)
15 |
16 | def tokencount(address):
17 | decimals = gstToken.functions.decimals().call()
18 |
19 | return int(gstToken.functions.balanceOf(address).call())/10**decimals
20 |
21 | print("tokens at:")
22 | print(tokencount('0x7ab874Eeef0169ADA0d225E9801A3FfFfa26aAC3'))
23 |
24 |
--------------------------------------------------------------------------------
/requirements.txt:
--------------------------------------------------------------------------------
1 | flask
2 | flask-sqlalchemy
3 | flask_jwt_extended
4 | web3
5 |
6 | mock
7 | gevent
8 | gunicorn
9 | flask_sslify
10 |
11 |
--------------------------------------------------------------------------------
/run-server.sh:
--------------------------------------------------------------------------------
1 | #!/bin/bash
2 | export LC_ALL="C.UTF-8"
3 | export LANG="C.UTF-8"
4 | export FLASK_APP=./server.py
5 |
6 | if [ ! -d venv ]
7 | then
8 | echo "[+] Creating new python3 virtualenv named venv"
9 | virtualenv -p /usr/bin/python3 venv
10 | fi
11 |
12 | source venv/bin/activate
13 | pip3 install -r requirements.txt
14 |
15 | while [ 1 == 1 ]
16 | do
17 | #echo `date` >> start.log
18 | flask run # --with-threads --host=0.0.0.0
19 | sleep 5
20 | done
21 |
22 |
--------------------------------------------------------------------------------
/server.py:
--------------------------------------------------------------------------------
1 | import flask
2 | from flask import render_template, request, Flask, g, send_from_directory, abort, jsonify
3 | from flask_sqlalchemy import SQLAlchemy
4 | from sqlalchemy import Table, Column, Float, Integer, String, MetaData, ForeignKey
5 |
6 | import json
7 | import random
8 | import string
9 | import os
10 | import time
11 |
12 | from web3.auto import w3
13 | from eth_account.messages import defunct_hash_message
14 |
15 | from flask_jwt_extended import JWTManager, jwt_required, create_access_token, get_jwt_identity, set_access_cookies
16 |
17 | from ethhelper import *
18 |
19 | app = Flask(__name__,static_url_path='/static')
20 | app.jinja_env.add_extension('jinja2.ext.do')
21 | app.config['SQLALCHEMY_DATABASE_URI'] = 'sqlite:///users.db'
22 | db = SQLAlchemy(app)
23 |
24 | # Setup the Flask-JWT-Extended extension
25 | # log2(26^22) ~= 100 (pull at least 100 bits of entropy)
26 | app.config['JWT_SECRET_KEY'] = ''.join(random.choice(string.ascii_lowercase) for i in range(22))
27 | app.config['JWT_TOKEN_LOCATION'] = ['cookies']
28 | app.config['JWT_COOKIE_SECURE'] = True
29 | #app.config['JWT_ACCESS_COOKIE_PATH'] = '/api/'
30 | app.config['JWT_COOKIE_CSRF_PROTECT'] = True
31 | jwt = JWTManager(app)
32 |
33 | @app.before_first_request
34 | def setup():
35 | print("[+] running setup")
36 | try:
37 | db.create_all()
38 | print("[+] created users db")
39 | except:
40 | print("[+] users db already exists")
41 |
42 | def generate_nonce(self, length=8):
43 | return ''.join([str(randint(0, 9)) for i in range(length)])
44 |
45 | class User(db.Model):
46 | public_address = db.Column(db.String(80), primary_key=True, nullable=False, unique=True)
47 | nonce = db.Column(db.Integer(),nullable=False,default=generate_nonce,)
48 |
49 | @app.route('/')
50 | def landing():
51 | return render_template("index.html")
52 |
53 | @app.route('/secret')
54 | @jwt_required
55 | def secret():
56 | current_user = get_jwt_identity()
57 | numtokens = tokencount(current_user)
58 | if numtokens > 100:
59 | msg="The Galaxy is on Orion's Belt"
60 | else:
61 | msg="You need more than 100 GST to view this message."
62 | return ("HELLO "+str(current_user)+" "+msg)
63 |
64 | @app.route('/login', methods=['POST'])
65 | def login():
66 |
67 | print("[+] creating session")
68 |
69 | print("info: "+(str(request.json)))
70 |
71 | public_address = request.json[0]
72 | signature = request.json[1]
73 |
74 | domain = "simple-flask-metamask.herokuapp.com"
75 |
76 | rightnow = int(time.time())
77 | sortanow = rightnow-rightnow%600
78 |
79 | original_message = 'Signing in to {} at {}'.format(domain,sortanow)
80 | print("[+] checking: "+original_message)
81 | message_hash = defunct_hash_message(text=original_message)
82 | signer = w3.eth.account.recoverHash(message_hash, signature=signature)
83 | print("[+] fascinating")
84 |
85 | if signer == public_address:
86 | print("[+] this is fine "+str(signer))
87 | # account.nonce = account.generate_nonce()
88 | # db.session.commit()
89 | else:
90 | abort(401, 'could not authenticate signature')
91 |
92 | print("[+] OMG looks good")
93 |
94 | access_token = create_access_token(identity=public_address)
95 |
96 | resp = jsonify({'login': True})
97 | set_access_cookies(resp, access_token)
98 | return resp, 200
99 |
--------------------------------------------------------------------------------
/static/app.js:
--------------------------------------------------------------------------------
1 | let provider;
2 | let accounts;
3 |
4 | let accountAddress = "";
5 | let signer;
6 |
7 | function login()
8 | {
9 |
10 | console.log('oh hey there');
11 |
12 | // signer.signMessage("hello");
13 |
14 | rightnow = (Date.now()/1000).toFixed(0)
15 | sortanow = rightnow-(rightnow%600)
16 |
17 | signer.signMessage("Signing in to "+document.domain+" at "+sortanow, accountAddress, "test password!")
18 | .then((signature) => { handleAuth(accountAddress, signature)
19 | });
20 | }
21 |
22 | function handleAuth(accountAddress, signature)
23 | {
24 | console.log(accountAddress);
25 | console.log(signature);
26 |
27 | fetch('login', {
28 | method: 'post',
29 | headers: {'Content-Type': 'application/json'},
30 | body: JSON.stringify([accountAddress,signature])
31 | }).then((response) => {
32 | return response.json();
33 | })
34 | .then((data) => {
35 | console.log(data);
36 | });
37 |
38 | }
39 |
40 | ethereum.enable().then(function () {
41 |
42 | provider = new ethers.providers.Web3Provider(web3.currentProvider);
43 |
44 |
45 | provider.getNetwork().then(function (result) {
46 | if (result['chainId'] != 1) {
47 | document.getElementById("msg").textContent = 'Switch to Mainnet!';
48 |
49 | } else { // okay, confirmed we're on mainnet
50 |
51 | provider.listAccounts().then(function (result) {
52 | console.log(result);
53 | accountAddress = result[0]; // figure out the user's Eth address
54 |
55 | provider.getBalance(String(result[0])).then(function (balance) {
56 | var myBalance = (balance / ethers.constants.WeiPerEther).toFixed(4);
57 | console.log("Your Balance: " + myBalance);
58 | document.getElementById("msg").textContent = 'ETH Balance: ' + myBalance;
59 | });
60 |
61 | // get a signer object so we can do things that need signing
62 | signer = provider.getSigner();
63 |
64 | // build out the table of players
65 | })
66 | }
67 | })
68 | })
69 |
70 | /*
71 | web3.eth.getAccounts()
72 | .then((response) => {
73 | const publicAddressResponse = response[0];
74 |
75 | if (!(typeof publicAddressResponse === "undefined")) {
76 | setPublicAddress(publicAddressResponse);
77 | getNonce(publicAddressResponse);
78 | }
79 | })
80 | .catch((e) => {
81 | console.error(e);
82 | });
83 | */
84 |
--------------------------------------------------------------------------------
/static/hello.txt:
--------------------------------------------------------------------------------
1 | hi
2 |
--------------------------------------------------------------------------------
/static/warp.gif:
--------------------------------------------------------------------------------
https://raw.githubusercontent.com/pierce403/simple-flask-metamask/07de2047b47b95b437a6121f15d253c567e64c93/static/warp.gif
--------------------------------------------------------------------------------
/templates/data.html:
--------------------------------------------------------------------------------
1 |
2 |
3 | Directory listing for /data/
4 |
5 |