+class problem(msgerror):
+ def __init__(self, code, data, *args, url=None, **kw):
+ super().__init__(*args, **kw)
+ self.code = code
+ self.data = data
+ self.url = url
+ if not isinstance(data, dict):
+ raise ValueError("unexpected problem object type: %r" % (data,))
+
+ @property
+ def type(self):
+ return self.data.get("type", "about:blank")
+ @property
+ def title(self):
+ return self.data.get("title")
+ @property
+ def detail(self):
+ return self.data.get("detail")
+
+ def report(self, out):
+ extra = None
+ if self.title is None:
+ msg = self.detail
+ if "\n" in msg:
+ extra, msg = msg, None
+ else:
+ msg = self.title
+ extra = self.detail
+ if msg is None:
+ msg = self.data.get("type")
+ if msg is not None:
+ out.write("acemcert: %s: %s\n" % (
+ ("remote service error" if self.url is None else self.url),
+ ("unspecified error" if msg is None else msg)))
+ if extra is not None:
+ out.write("%s\n" % (extra,))
+
+ @classmethod
+ def read(cls, err, **kw):
+ self = cls(err.code, json.load(err), **kw)
+ return self
+