Abstracted some common data-types.
[fulbank.git] / 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)