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from __future__ import unicode_literals |
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import codecs |
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import logging |
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from io import BytesIO, StringIO |
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import six |
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import requests |
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from requests.packages.urllib3.filepost import choose_boundary, iter_fields |
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logger = logging.getLogger('binstar.requests_ext') |
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def encode_multipart_formdata_stream(fields, boundary=None): |
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""" |
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Encode a dictionary of ``fields`` using the multipart/form-data MIME format. |
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:param fields: |
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Dictionary of fields or list of (key, value) or (key, value, MIME type) |
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field tuples. The key is treated as the field name, and the value as |
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the body of the form-data bytes. If the value is a tuple of two |
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elements, then the first element is treated as the filename of the |
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form-data section and a suitable MIME type is guessed based on the |
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filename. If the value is a tuple of three elements, then the third |
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element is treated as an explicit MIME type of the form-data section. |
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Field names and filenames must be unicode. |
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:param boundary: |
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If not specified, then a random boundary will be generated using |
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:func:`mimetools.choose_boundary`. |
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""" |
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body = [] |
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def body_write(item): |
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if isinstance(item, six.binary_type): |
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item = BytesIO(item) |
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elif isinstance(item, six.text_type): |
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item = StringIO(item) |
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body.append(item) |
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body_write_encode = lambda item: body.append(BytesIO(item.encode('utf-8'))) |
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if boundary is None: |
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boundary = choose_boundary() |
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for fieldname, value in iter_fields(fields): |
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body_write_encode('--%s\r\n' % (boundary)) |
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if isinstance(value, tuple): |
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if len(value) == 3: |
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filename, data, content_type = value |
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else: |
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filename, data = value |
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from mimetypes import guess_type |
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content_type, _ = guess_type(filename) |
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if content_type is None: |
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content_type = 'application/octet-stream' |
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body_write_encode('Content-Disposition: form-data; name="%s"; ' |
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'filename="%s"\r\n' % (fieldname, filename)) |
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body_write_encode('Content-Type: %s\r\n\r\n' % |
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(content_type,)) |
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else: |
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data = value |
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body_write_encode('Content-Disposition: form-data; name="%s"\r\n' |
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% (fieldname)) |
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body_write(b'\r\n') |
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if isinstance(data, six.integer_types): |
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data = six.text_type(data) # Backwards compatibility |
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if isinstance(data, six.text_type): |
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body_write_encode(data) |
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else: |
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body_write(data) |
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body_write(b'\r\n') |
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body_write_encode('--%s--\r\n' % (boundary)) |
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content_type = 'multipart/form-data; boundary=%s' % (boundary) |
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return body, content_type |
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class MultiPartIO(object): |
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def __init__(self, body, callback=None): |
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self.to_read = body |
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self.have_read = [] |
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self._total = 0 |
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self.callback = callback |
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def read(self, n= -1): |
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if self.callback: |
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self.callback(self.tell(), self._total) |
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if n == -1: |
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return b''.join(fd.read() for fd in self.to_read) |
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if not self.to_read: |
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return b'' |
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while self.to_read: |
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data = self.to_read[0].read(n) |
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if data: |
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return data |
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fd = self.to_read.pop(0) |
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self.have_read.append(fd) |
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return b'' |
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def tell(self): |
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cursor = sum(fd.tell() for fd in self.have_read) |
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if self.to_read: |
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cursor += self.to_read[0].tell() |
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return cursor |
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def seek(self, pos, mode=0): |
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assert pos == 0 |
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if mode is 0: |
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self.to_read = self.have_read + self.to_read |
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self.have_read = [] |
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[fd.seek(pos, mode) for fd in self.to_read] |
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self.cursor = 0 |
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elif mode is 2: |
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self.have_read = self.have_read + self.to_read |
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self.to_read = [] |
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[fd.seek(pos, mode) for fd in self.have_read] |
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self._total = self.tell() |
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def stream_multipart(data, files=None, callback=None): |
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from itertools import chain |
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if files: |
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fields = chain(iter_fields(data), iter_fields(files)) |
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else: |
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fields = data |
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body, content_type = encode_multipart_formdata_stream(fields) |
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data = MultiPartIO(body, callback=callback) |
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headers = {'Content-Type':content_type} |
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return data, headers |
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149
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150
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class NullAuth(requests.auth.AuthBase): |
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"""force requests to ignore the ``.netrc`` |
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153
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Some sites do not support regular authentication, but we still |
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want to store credentials in the ``.netrc`` file and submit them |
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as form elements. Without this, requests would otherwise use the |
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.netrc which leads, on some sites, to a 401 error. |
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https://github.com/kennethreitz/requests/issues/2773 |
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160
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Use with:: |
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requests.get(url, auth=NullAuth()) |
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""" |
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def __call__(self, r): |
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return r |
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Anaconda-Platform /
anaconda-client
