fulbank/fsb.py

   1 import json, http.cookiejar, binascii, time, pickle
   2 from urllib import request, parse
   3 from bs4 import BeautifulSoup as soup
   4 from . import currency
   5 soupify = lambda cont: soup(cont, "html.parser")
   6
   7 apibase = "https://online.swedbank.se/TDE_DAP_Portal_REST_WEB/api/"
   8 loginurl = "https://online.swedbank.se/app/privat/login"
   9 serviceid = "B7dZHQcY78VRVz9l"
  10
  11 class fmterror(Exception):
  12     pass
  13
  14 class autherror(Exception):
  15     pass
  16
  17 def resolve(d, keys, default=fmterror):
  18     def err():
  19         if default is fmterror:
  20             raise fmterror()
  21         return default
  22     def rec(d, keys):
  23         if len(keys) == 0:
  24             return d
  25         if isinstance(d, dict):
  26             if keys[0] not in d:
  27                 return err()
  28             return rec(d[keys[0]], keys[1:])
  29         else:
  30             return err()
  31     return rec(d, keys)
  32
  33 def linkurl(ln):
  34     if ln[0] != '/':
  35         raise fmterror("unexpected link url: " + ln)
  36     return parse.urljoin(apibase, ln[1:])
  37
  38 def getdsid():
  39     with request.urlopen(loginurl) as resp:
  40         if resp.code != 200:
  41             raise fmterror("Unexpected HTTP status code: " + str(resp.code))
  42         doc = soupify(resp.read())
  43     dsel = doc.find("div", id="cust-sess-id")
  44     if not dsel or not dsel.has_attr("value"):
  45         raise fmterror("DSID DIV not on login page")
  46     return dsel["value"]
  47
  48 def base64(data):
  49     return binascii.b2a_base64(data).decode("ascii").strip().rstrip("=")
  50
  51 class transaction(object):
  52     def __init__(self, account, data):
  53         self.account = account
  54         self._data = data
  55
  56     @property
  57     def value(self): return currency.currency.get(resolve(self._data, ("currency",))).parse(resolve(self._data, ("amount",)))
  58     @property
  59     def message(self): return resolve(self._data, ("details", "message"))
  60
  61     def __repr__(self):
  62         return "#<fsb.transaction %s: %r>" % (self.value, self.message)
  63
  64 class account(object):
  65     def __init__(self, sess, id, idata):
  66         self.sess = sess
  67         self.id = id
  68         self._data = None
  69         self._idata = idata
  70
  71     @property
  72     def data(self):
  73         if self._data is None:
  74             self._data = self.sess._jreq("v5/engagement/account/" + self.id)
  75         return self._data
  76
  77     @property
  78     def number(self): return resolve(self.data, ("accountNumber",))
  79     @property
  80     def clearing(self): return resolve(self.data, ("clearingNumber",))
  81     @property
  82     def fullnumber(self): return resolve(self.data, ("fullyFormattedNumber",))
  83     @property
  84     def name(self): return resolve(self._idata, ("name",))
  85
  86     def transactions(self):
  87         pagesz = 50
  88         data = self.sess._jreq("v5/engagement/transactions/" + self.id, transactionsPerPage=pagesz, page=1)
  89         for tx in resolve(data, ("transactions",)):
  90             yield transaction(self, tx)
  91
  92     def __repr__(self):
  93         return "#<fsb.account %s: %r>" % (self.fullnumber, self.name)
  94
  95 class session(object):
  96     def __init__(self, dsid):
  97         self.dsid = dsid
  98         self.auth = base64((serviceid + ":" + str(int(time.time() * 1000))).encode("ascii"))
  99         self.jar = request.HTTPCookieProcessor()
 100         self.jar.cookiejar.set_cookie(http.cookiejar.Cookie(
 101             version=0, name="dsid", value=dsid, path="/", path_specified=True,
 102             domain=".online.swedbank.se", domain_specified=True, domain_initial_dot=True,
 103             port=None, port_specified=False, secure=False, expires=None,
 104             discard=True, comment=None, comment_url=None,
 105             rest={}, rfc2109=False))
 106         self.userid = None
 107         self._accounts = None
 108
 109     def _req(self, url, data=None, ctype=None, headers={}, method=None, **kws):
 110         if "dsid" not in kws:
 111             kws["dsid"] = self.dsid
 112         kws = {k: v for (k, v) in kws.items() if v is not None}
 113         url = parse.urljoin(apibase, url + "?" + parse.urlencode(kws))
 114         if isinstance(data, dict):
 115             data = json.dumps(data).encode("utf-8")
 116             ctype = "application/json;charset=UTF-8"
 117         req = request.Request(url, data=data, method=method)
 118         for hnam, hval in headers.items():
 119             req.add_header(hnam, hval)
 120         if ctype is not None:
 121             req.add_header("Content-Type", ctype)
 122         req.add_header("Authorization", self.auth)
 123         self.jar.https_request(req)
 124         with request.urlopen(req) as resp:
 125             if resp.code != 200 and resp.code != 201:
 126                 raise fmterror("Unexpected HTTP status code: " + str(resp.code))
 127             self.jar.https_response(req, resp)
 128             return resp.read()
 129
 130     def _jreq(self, *args, **kwargs):
 131         headers = kwargs.pop("headers", {})
 132         headers["Accept"] = "application/json"
 133         ret = self._req(*args, headers=headers, **kwargs)
 134         return json.loads(ret.decode("utf-8"))
 135
 136     def _postlogin(self):
 137         auth = self._jreq("v5/user/authenticationinfo")
 138         uid = auth.get("identifiedUser", "")
 139         if uid == "":
 140             raise fmterror("no identified user even after successful authentication")
 141         self.userid = uid
 142         prof = self._jreq("v5/profile/")
 143         if len(prof["banks"]) != 1:
 144             raise fmterror("do not know the meaning of multiple banks")
 145         rolesw = linkurl(resolve(prof["banks"][0], ("privateProfile", "links", "next", "uri")))
 146         self._jreq(rolesw, method="POST")
 147
 148     def auth_bankid(self, user):
 149         data = self._jreq("v5/identification/bankid/mobile", data = {
 150             "userId": user,
 151             "useEasyLogin": False,
 152             "generateEasyLoginId": False})
 153         if data.get("status") != "USER_SIGN":
 154             raise fmterror("unexpected bankid status: " + str(data.get("status")))
 155         vfy = linkurl(resolve(data, ("links", "next", "uri")))
 156         while True:
 157             time.sleep(3)
 158             vdat = self._jreq(vfy)
 159             st = vdat.get("status")
 160             if st == "USER_SIGN":
 161                 continue
 162             elif st == "CLIENT_NOT_STARTED":
 163                 continue
 164             elif st == "COMPLETE":
 165                 self._postlogin()
 166                 return
 167             elif st == "CANCELLED":
 168                 raise autherror("authentication cancelled")
 169             else:
 170                 raise fmterror("unexpected bankid status: " + str(st))
 171
 172     def keepalive(self):
 173         data = self._jreq("v5/framework/clientsession")
 174         return data["timeoutInMillis"] / 1000
 175
 176     @property
 177     def accounts(self):
 178         if self._accounts is None:
 179             data = self._jreq("v5/engagement/overview")
 180             accounts = []
 181             for acct in resolve(data, ("transactionAccounts",)):
 182                 accounts.append(account(self, resolve(acct, ("id",)), acct))
 183             self._accounts = accounts
 184         return self._accounts
 185
 186     def logout(self):
 187         if self.userid is not None:
 188             self._jreq("v5/identification/logout", method="PUT")
 189             self.userid = None
 190
 191     def close(self):
 192         self.logout()
 193         self._req("v5/framework/clientsession", method="DELETE")
 194
 195     def __enter__(self):
 196         return self
 197
 198     def __exit__(self, *excinfo):
 199         self.close()
 200         return False
 201
 202     def __repr__(self):
 203         if self.userid is not None:
 204             return "#<fsb.session %s>" % self.userid
 205         return "#<fsb.session>"
 206
 207     @classmethod
 208     def create(cls):
 209         return cls(getdsid())
 210
 211     def save(self, filename):
 212         with open(filename, "wb") as fp:
 213             pickle.dump(self, fp)
 214
 215     @classmethod
 216     def load(cls, filename):
 217         with open(filename, "rb") as fp:
 218             return picke.load(fp)