Beispiel #1
0
    def render_PUT(self, ctx):
        req = IRequest(ctx)
        t = get_arg(req, "t", "").strip()
        replace = parse_replace_arg(get_arg(req, "replace", "true"))
        offset = parse_offset_arg(get_arg(req, "offset", None))

        if not t:
            if not replace:
                # this is the early trap: if someone else modifies the
                # directory while we're uploading, the add_file(overwrite=)
                # call in replace_me_with_a_child will do the late trap.
                raise ExistingChildError()

            if self.node.is_mutable():
                # Are we a readonly filenode? We shouldn't allow callers
                # to try to replace us if we are.
                if self.node.is_readonly():
                    raise WebError("PUT to a mutable file: replace or update"
                                   " requested with read-only cap")
                if offset is None:
                    return self.replace_my_contents(req)

                if offset >= 0:
                    return self.update_my_contents(req, offset)

                raise WebError("PUT to a mutable file: Invalid offset")

            else:
                if offset is not None:
                    raise WebError("PUT to a file: append operation invoked "
                                   "on an immutable cap")

                assert self.parentnode and self.name
                return self.replace_me_with_a_child(req, self.client, replace)

        if t == "uri":
            if not replace:
                raise ExistingChildError()
            assert self.parentnode and self.name
            return self.replace_me_with_a_childcap(req, self.client, replace)

        raise WebError("PUT to a file: bad t=%s" % t)
Beispiel #2
0
    def render_PUT(self, ctx):
        req = IRequest(ctx)
        t = get_arg(req, "t", "").strip()
        replace = parse_replace_arg(get_arg(req, "replace", "true"))
        offset = parse_offset_arg(get_arg(req, "offset", None))

        if not t:
            if not replace:
                # this is the early trap: if someone else modifies the
                # directory while we're uploading, the add_file(overwrite=)
                # call in replace_me_with_a_child will do the late trap.
                raise ExistingChildError()

            if self.node.is_mutable():
                # Are we a readonly filenode? We shouldn't allow callers
                # to try to replace us if we are.
                if self.node.is_readonly():
                    raise WebError("PUT to a mutable file: replace or update"
                                   " requested with read-only cap")
                if offset is None:
                    return self.replace_my_contents(req)

                if offset >= 0:
                    return self.update_my_contents(req, offset)

                raise WebError("PUT to a mutable file: Invalid offset")

            else:
                if offset is not None:
                    raise WebError("PUT to a file: append operation invoked "
                                   "on an immutable cap")

                assert self.parentnode and self.name
                return self.replace_me_with_a_child(req, self.client, replace)

        if t == "uri":
            if not replace:
                raise ExistingChildError()
            assert self.parentnode and self.name
            return self.replace_me_with_a_childcap(req, self.client, replace)

        raise WebError("PUT to a file: bad t=%s" % t)