www-bocal/api/client/apiclient.py
2017-10-16 21:24:59 +02:00

149 lines
4.4 KiB
Python

#!/usr/bin/env python3
''' API client for bocal-site '''
import json
import urllib.request
import hmac
import hashlib
from datetime import datetime, date
import argparse
import os.path
import sys
def sendReq(url):
def send(payload, host):
try:
req = urllib.request.Request('https://{}/{}'.format(host, url),
json.dumps(payload).encode('ascii'))
req.add_header('Content-Type', 'application/json')
handle = urllib.request.urlopen(req)
code = handle.getcode()
content = handle.read()
handle.close()
return (code, content.decode('utf-8'))
except urllib.error.HTTPError as e:
return (e.code, e.read().decode('utf-8'))
def authentify(apiKey, payload):
keyId, key = apiKey.split('$')
keyId = int(keyId)
time = datetime.now().timestamp()
mac = hmac.new(key.encode('utf-8'),
msg=str(int(time)).encode('utf-8'),
digestmod=hashlib.sha256)
payload_enc = json.dumps(payload)
mac.update(payload_enc.encode('utf-8'))
auth = {
'keyId': keyId,
'timestamp': time,
'hmac': mac.hexdigest(),
}
return {
'auth': auth,
'req': payload_enc,
}
def decorator(fct):
''' Decorator. Adds authentication layer. '''
def wrap(host, apiKey, *args, **kwargs):
innerReq = fct(*args, **kwargs)
payload = authentify(apiKey, innerReq)
return send(payload, host)
return wrap
return decorator
@sendReq(url='api/publish')
def publish(bocId, url, date):
return {
'id': bocId,
'url': url,
'date': date.strftime('%Y-%m-%d'),
}
###############################################################################
TOKEN_DFT_FILE = os.path.expanduser("~/.bocal_api_token")
DFT_HOST = 'bocal.cof.ens.fr'
def read_token(path):
token = ''
try:
with open(path, 'r') as handle:
token = handle.readline().strip()
except FileNotFoundError:
print("[Erreur] Fichier d'identifiants absent (`{}`).".format(path),
file=sys.stderr)
sys.exit(1)
return token
def cmd(func):
def wrap(parse_args, *args, **kwargs):
token = read_token(parse_args.creds)
return func(token, parse_args, *args, **kwargs)
return wrap
@cmd
def cmd_publish(token, args):
if not args.date:
publish_date = date.today()
else:
year, month, day = [int(x) for x in args.date.strip().split('-')]
publish_date = date(year=year, month=month, day=day)
(ret_code, ret_str) = publish(args.host,
token,
args.numero,
args.url,
publish_date)
if ret_code == 200:
print("Succès :)")
else:
print("[Erreur :c] {} : {}".format(ret_code, ret_str))
sys.exit(1)
def setup_argparse():
parser = argparse.ArgumentParser()
parser.add_argument('--host',
help=("Adresse du site à contacter (par défaut, "
"`{}`).".format(DFT_HOST)))
parser.add_argument('--creds',
help=("Fichier contenant le token API à utiliser "
"(par défaut, `{}`)".format(TOKEN_DFT_FILE)))
parser.set_defaults(creds=TOKEN_DFT_FILE, host=DFT_HOST)
subparsers = parser.add_subparsers()
parser_publish = subparsers.add_parser('publier',
help='Publier un numéro du BOcal')
parser_publish.add_argument('numero',
help='Numéro du BOcal')
parser_publish.add_argument('url',
help='Adresse (locale) du PDF du BOcal')
parser_publish.add_argument('-d', '--date',
help="Date de publication indiquée")
parser_publish.set_defaults(func=cmd_publish)
out_args = parser.parse_args()
if 'func' not in out_args: # No subcommand provided
print("You must provide a command.", file=sys.stderr)
print(parser.parse_args(['-h']), file=sys.stderr)
sys.exit(1)
return out_args
def main():
args = setup_argparse()
args.func(args)
if __name__ == '__main__':
main()