fulbank/fsb.py

   1 import json, http.cookiejar, binascii, time, datetime, pickle
   2 from urllib import request, parse
   3 from bs4 import BeautifulSoup as soup
   4 from . import currency, auth, data
   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(key):
  19         if default is fmterror:
  20             raise fmterror(key)
  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(keys[0])
  28             return rec(d[keys[0]], keys[1:])
  29         elif isinstance(d, list):
  30             if not 0 <= keys[0] < len(d):
  31                 return err(keys[0])
  32             return rec(d[keys[0]], keys[1:])
  33         else:
  34             return err(keys[0])
  35     return rec(d, keys)
  36
  37 def linkurl(ln):
  38     if ln[0] != '/':
  39         raise fmterror("unexpected link url: " + ln)
  40     return parse.urljoin(apibase, ln[1:])
  41
  42 def getdsid():
  43     with request.urlopen(loginurl) as resp:
  44         if resp.code != 200:
  45             raise fmterror("Unexpected HTTP status code: " + str(resp.code))
  46         doc = soupify(resp.read())
  47     dsel = doc.find("div", id="cust-sess-id")
  48     if not dsel or not dsel.has_attr("value"):
  49         raise fmterror("DSID DIV not on login page")
  50     return dsel["value"]
  51
  52 def base64(data):
  53     return binascii.b2a_base64(data).decode("ascii").strip().rstrip("=")
  54
  55 class transaction(data.transaction):
  56     def __init__(self, account, data):
  57         self.account = account
  58         self._data = data
  59
  60     _datefmt = "%Y-%m-%d"
  61
  62     @property
  63     def value(self): return currency.currency.get(resolve(self._data, ("currency",))).parse(resolve(self._data, ("amount",)))
  64     @property
  65     def message(self): return resolve(self._data, ("description",))
  66     @property
  67     def date(self):
  68         p = time.strptime(resolve(self._data, ("accountingDate",)), self._datefmt)
  69         return datetime.date(p.tm_year, p.tm_mon, p.tm_mday)
  70
  71 class txnaccount(data.txnaccount):
  72     def __init__(self, sess, id, idata):
  73         self.sess = sess
  74         self.id = id
  75         self._data = None
  76         self._idata = idata
  77
  78     @property
  79     def data(self):
  80         if self._data is None:
  81             self._data = self.sess._jreq("v5/engagement/account/" + self.id)
  82         return self._data
  83
  84     @property
  85     def number(self): return resolve(self.data, ("accountNumber",))
  86     @property
  87     def clearing(self): return resolve(self.data, ("clearingNumber",))
  88     @property
  89     def fullnumber(self): return resolve(self.data, ("fullyFormattedNumber",))
  90     @property
  91     def balance(self): return currency.currency.get(resolve(self.data, ("balance", "currencyCode"))).parse(resolve(self.data, ("balance", "amount")))
  92     @property
  93     def name(self): return resolve(self._idata, ("name",))
  94
  95     def transactions(self):
  96         pagesz = 50
  97         page = 1
  98         while True:
  99             data = self.sess._jreq("v5/engagement/transactions/" + self.id, transactionsPerPage=pagesz, page=page)
 100             txlist = resolve(data, ("transactions",))
 101             if len(txlist) < 1:
 102                 break
 103             for tx in txlist:
 104                 yield transaction(self, tx)
 105             page += 1
 106
 107 class cardtransaction(data.transaction):
 108     def __init__(self, account, data):
 109         self.account = account
 110         self._data = data
 111
 112     _datefmt = "%Y-%m-%d"
 113
 114     @property
 115     def value(self):
 116         am = resolve(self._data, ("localAmount",))
 117         return currency.currency.get(resolve(am, ("currencyCode",))).parse(resolve(am, ("amount",)))
 118     @property
 119     def message(self): return resolve(self._data, ("description",))
 120     @property
 121     def date(self):
 122         p = time.strptime(resolve(self._data, ("date",)), self._datefmt)
 123         return datetime.date(p.tm_year, p.tm_mon, p.tm_mday)
 124
 125 class cardaccount(data.cardaccount):
 126     def __init__(self, sess, id, idata):
 127         self.sess = sess
 128         self.id = id
 129         self._data = None
 130         self._idata = idata
 131
 132     @property
 133     def data(self):
 134         if self._data is None:
 135             self._data = self.sess._jreq("v5/engagement/cardaccount/" + self.id)
 136         return self._data
 137
 138     @property
 139     def number(self): return resolve(self.data, ("cardAccount", "cardNumber"))
 140     @property
 141     def balance(self):
 142         cc = resolve(self.data, ("transactions", 0, "localAmount", "currencyCode"))
 143         return currency.currency.get(cc).parse(resolve(self.data, ("cardAccount", "currentBalance")))
 144     @property
 145     def name(self): return resolve(self._idata, ("name",))
 146
 147     def transactions(self):
 148         pagesz = 50
 149         page = 1
 150         while True:
 151             data = self.sess._jreq("v5/engagement/cardaccount/" + self.id, transactionsPerPage=pagesz, page=page)
 152             txlist = resolve(data, ("transactions",))
 153             if len(txlist) < 1:
 154                 break
 155             for tx in txlist:
 156                 yield cardtransaction(self, tx)
 157             page += 1
 158
 159 class session(object):
 160     def __init__(self, dsid):
 161         self.dsid = dsid
 162         self.auth = base64((serviceid + ":" + str(int(time.time() * 1000))).encode("ascii"))
 163         self.jar = request.HTTPCookieProcessor()
 164         self.jar.cookiejar.set_cookie(http.cookiejar.Cookie(
 165             version=0, name="dsid", value=dsid, path="/", path_specified=True,
 166             domain=".online.swedbank.se", domain_specified=True, domain_initial_dot=True,
 167             port=None, port_specified=False, secure=False, expires=None,
 168             discard=True, comment=None, comment_url=None,
 169             rest={}, rfc2109=False))
 170         self.userid = None
 171         self._accounts = None
 172
 173     def _req(self, url, data=None, ctype=None, headers={}, method=None, **kws):
 174         if "dsid" not in kws:
 175             kws["dsid"] = self.dsid
 176         kws = {k: v for (k, v) in kws.items() if v is not None}
 177         url = parse.urljoin(apibase, url + "?" + parse.urlencode(kws))
 178         if isinstance(data, dict):
 179             data = json.dumps(data).encode("utf-8")
 180             ctype = "application/json;charset=UTF-8"
 181         req = request.Request(url, data=data, method=method)
 182         for hnam, hval in headers.items():
 183             req.add_header(hnam, hval)
 184         if ctype is not None:
 185             req.add_header("Content-Type", ctype)
 186         req.add_header("Authorization", self.auth)
 187         self.jar.https_request(req)
 188         with request.urlopen(req) as resp:
 189             if resp.code != 200 and resp.code != 201:
 190                 raise fmterror("Unexpected HTTP status code: " + str(resp.code))
 191             self.jar.https_response(req, resp)
 192             return resp.read()
 193
 194     def _jreq(self, *args, **kwargs):
 195         headers = kwargs.pop("headers", {})
 196         headers["Accept"] = "application/json"
 197         ret = self._req(*args, headers=headers, **kwargs)
 198         return json.loads(ret.decode("utf-8"))
 199
 200     def _postlogin(self):
 201         auth = self._jreq("v5/user/authenticationinfo")
 202         uid = auth.get("identifiedUser", "")
 203         if uid == "":
 204             raise fmterror("no identified user even after successful authentication")
 205         self.userid = uid
 206         prof = self._jreq("v5/profile/")
 207         if len(prof["banks"]) != 1:
 208             raise fmterror("do not know the meaning of multiple banks")
 209         rolesw = linkurl(resolve(prof["banks"][0], ("privateProfile", "links", "next", "uri")))
 210         self._jreq(rolesw, method="POST")
 211
 212     def auth_bankid(self, user, conv=None):
 213         if conv is None:
 214             conv = auth.default()
 215         data = self._jreq("v5/identification/bankid/mobile", data = {
 216             "userId": user,
 217             "useEasyLogin": False,
 218             "generateEasyLoginId": False})
 219         if data.get("status") != "USER_SIGN":
 220             raise fmterror("unexpected bankid status: " + str(data.get("status")))
 221         vfy = linkurl(resolve(data, ("links", "next", "uri")))
 222         fst = None
 223         while True:
 224             time.sleep(3)
 225             vdat = self._jreq(vfy)
 226             st = vdat.get("status")
 227             if st in {"USER_SIGN", "CLIENT_NOT_STARTED"}:
 228                 if st != fst:
 229                     conv.message("Status: %s" % (st,), auth.conv.msg_info)
 230                     fst = st
 231                 continue
 232             elif st == "COMPLETE":
 233                 self._postlogin()
 234                 return
 235             elif st == "CANCELLED":
 236                 raise autherror("authentication cancelled")
 237             else:
 238                 raise fmterror("unexpected bankid status: " + str(st))
 239
 240     def keepalive(self):
 241         data = self._jreq("v5/framework/clientsession")
 242         return data["timeoutInMillis"] / 1000
 243
 244     @property
 245     def accounts(self):
 246         if self._accounts is None:
 247             data = self._jreq("v5/engagement/overview")
 248             accounts = []
 249             for acct in resolve(data, ("transactionAccounts",)):
 250                 accounts.append(txnaccount(self, resolve(acct, ("id",)), acct))
 251             for acct in resolve(data, ("cardAccounts",)):
 252                 accounts.append(cardaccount(self, resolve(acct, ("id",)), acct))
 253             self._accounts = accounts
 254         return self._accounts
 255
 256     def logout(self):
 257         if self.userid is not None:
 258             self._jreq("v5/identification/logout", method="PUT")
 259             self.userid = None
 260
 261     def close(self):
 262         self.logout()
 263         self._req("v5/framework/clientsession", method="DELETE")
 264
 265     def __enter__(self):
 266         return self
 267
 268     def __exit__(self, *excinfo):
 269         self.close()
 270         return False
 271
 272     def __repr__(self):
 273         if self.userid is not None:
 274             return "#<fsb.session %s>" % self.userid
 275         return "#<fsb.session>"
 276
 277     @classmethod
 278     def create(cls):
 279         return cls(getdsid())
 280
 281     def save(self, filename):
 282         with open(filename, "wb") as fp:
 283             pickle.dump(self, fp)
 284
 285     @classmethod
 286     def load(cls, filename):
 287         with open(filename, "rb") as fp:
 288             return pickle.load(fp)