def stream_multipart(data, files=None, callback=None):
from itertools import chain
if files:
fields = chain(iter_fields(data), iter_fields(files))
else:
fields = data
body, content_type = encode_multipart_formdata_stream(fields)
data = MultiPartIO(body, callback=callback)
headers = {'Content-Type':content_type}
return data, headers
def stream_multipart(data, files=None, callback=None):
from itertools import chain
if files:
fields = chain(iter_fields(data), iter_fields(files))
else:
fields = data
body, content_type = encode_multipart_formdata_stream(fields)
data = MultiPartIO(body, callback=callback)
headers = {'Content-Type': content_type}
return data, headers
def __create_request_parts(self, files):
request_list = []
boundary = _make_boundary()
content_length = 0
boundary_string = b'--%s\r\n' % (boundary)
for fieldname, value in iter_fields(files):
content_length += len(boundary_string)
if isinstance(value, tuple):
filename, data = value
content_disposition_string = (
('Content-Disposition: form-data; name="%s"; '
'filename="%s"\r\n' %
(fieldname, filename)) + ('Content-Type: %s\r\n\r\n' %
(guess_content_type(filename))))
else:
data = value
content_disposition_string = (
('Content-Disposition: form-data; name="%s"\r\n' %
(fieldname)) + 'Content-Type: text/plain\r\n\r\n')
request_list.append(
BytesIO(str(boundary_string + content_disposition_string)))
content_length += len(content_disposition_string)
if hasattr(data, 'read'):
data_stream = data
else:
data_stream = BytesIO(str(data))
data_stream.seek(0, 2)
data_size = data_stream.tell()
data_stream.seek(0)
request_list.append(data_stream)
content_length += data_size
end_string = b'\r\n'
request_list.append(BytesIO(end_string))
content_length += len(end_string)
request_list.append(BytesIO(b'--%s--\r\n' % (boundary)))
content_length += len(boundary_string)
# There's a bug in httplib.py that generates a UnicodeDecodeError on binary uploads if
# there are *any* unicode strings passed into headers as part of the requests call.
# For this reason all strings are explicitly converted to non-unicode at this point.
self.content_type_header = {
b'Content-Type': b'multipart/form-data; boundary=%s' % boundary
}
self.content_length_header = {b'Content-Length': str(content_length)}
self._body_parts = request_list
self._content_length = content_length + 2
def __create_request_parts(self, files):
request_list = []
boundary = choose_boundary()
content_length = 0
boundary_string = b'--%s\r\n' % (boundary)
for fieldname, value in iter_fields(files):
content_length += len(boundary_string)
if isinstance(value, tuple):
filename, data = value
content_disposition_string = (('Content-Disposition: form-data; name="%s"; ''filename="%s"\r\n' % (fieldname, filename))
+ ('Content-Type: %s\r\n\r\n' % (guess_content_type(filename))))
else:
data = value
content_disposition_string = (('Content-Disposition: form-data; name="%s"\r\n' % (fieldname))
+ 'Content-Type: text/plain\r\n\r\n')
request_list.append(BytesIO(str(boundary_string + content_disposition_string)))
content_length += len(content_disposition_string)
if hasattr(data, 'read'):
data_stream = data
else:
data_stream = BytesIO(str(data))
data_stream.seek(0,2)
data_size = data_stream.tell()
data_stream.seek(0)
request_list.append(data_stream)
content_length += data_size
end_string = b'\r\n'
request_list.append(BytesIO(end_string))
content_length += len(end_string)
request_list.append(BytesIO(b'--%s--\r\n' % (boundary)))
content_length += len(boundary_string)
# There's a bug in httplib.py that generates a UnicodeDecodeError on binary uploads if
# there are *any* unicode strings passed into headers as part of the requests call.
# For this reason all strings are explicitly converted to non-unicode at this point.
self.content_type_header = {b'Content-Type': b'multipart/form-data; boundary=%s' % boundary}
self.content_length_header = {b'Content-Length': str(content_length)}
self._body_parts = request_list
self._content_length = content_length + 2
def encode_multipart_formdata(fields, boundary=None):
"""Fix bug in multipart/form-data POST request handling.
For some reason, the specific combination of Rack + Ruby + Rails versions
that we are using in production has trouble handling multipart/form-data
POST requests where the non-binary parts have a Content-Type header. To
get around this, we just monkey patch the ```encode_multipart_formdata```
function in ```urllib3``` and modify it to *not* set the Content-Type
header on non-binary parts.
"""
body = BytesIO()
if boundary is None:
boundary = choose_boundary()
for fieldname, value in iter_fields(fields):
body.write(b('--%s\r\n' % (boundary)))
if isinstance(value, tuple):
filename, data = value
writer(body).write('Content-Disposition: form-data; name="%s"; '
'filename="%s"\r\n' % (fieldname, filename))
body.write(b('Content-Type: %s\r\n\r\n' %
(get_content_type(filename))))
else:
data = value
writer(body).write(
'Content-Disposition: form-data; name="%s"\r\n\r\n' % (
fieldname))
if isinstance(data, int):
data = str(int) # Backwards compatibility
if isinstance(data, six.text_type):
writer(body).write(data)
else:
body.write(data)
body.write(b'\r\n')
body.write(b('--%s--\r\n' % (boundary)))
content_type = b('multipart/form-data; boundary=%s' % boundary)
return body.getvalue(), content_type
def encode_multipart_formdata(fields, boundary=None):
"""Fix bug in multipart/form-data POST request handling.
For some reason, the specific combination of Rack + Ruby + Rails versions
that we are using in production has trouble handling multipart/form-data
POST requests where the non-binary parts have a Content-Type header. To
get around this, we just monkey patch the ```encode_multipart_formdata```
function in ```urllib3``` and modify it to *not* set the Content-Type
header on non-binary parts.
"""
body = BytesIO()
if boundary is None:
boundary = choose_boundary()
for fieldname, value in iter_fields(fields):
body.write(b('--%s\r\n' % (boundary)))
if isinstance(value, tuple):
filename, data = value
writer(body).write('Content-Disposition: form-data; name="%s"; '
'filename="%s"\r\n' % (fieldname, filename))
body.write(
b('Content-Type: %s\r\n\r\n' % (get_content_type(filename))))
else:
data = value
writer(body).write(
'Content-Disposition: form-data; name="%s"\r\n\r\n' %
(fieldname))
if isinstance(data, int):
data = str(int) # Backwards compatibility
if isinstance(data, six.text_type):
writer(body).write(data)
else:
body.write(data)
body.write(b'\r\n')
body.write(b('--%s--\r\n' % (boundary)))
content_type = b('multipart/form-data; boundary=%s' % boundary)
return body.getvalue(), content_type
def encode_multipart_formdata_stream(fields, boundary=None):
"""
Encode a dictionary of ``fields`` using the multipart/form-data MIME format.
:param fields:
Dictionary of fields or list of (key, value) or (key, value, MIME type)
field tuples. The key is treated as the field name, and the value as
the body of the form-data bytes. If the value is a tuple of two
elements, then the first element is treated as the filename of the
form-data section and a suitable MIME type is guessed based on the
filename. If the value is a tuple of three elements, then the third
element is treated as an explicit MIME type of the form-data section.
Field names and filenames must be unicode.
:param boundary:
If not specified, then a random boundary will be generated using
:func:`mimetools.choose_boundary`.
"""
body = []
def body_write(item):
if isinstance(item, basestring):
item = BytesIO(item)
body.append(item)
body_write_encode = lambda item: body.append(BytesIO(item.encode('utf-8')))
if boundary is None:
boundary = choose_boundary()
for fieldname, value in iter_fields(fields):
body_write(b('--%s\r\n' % (boundary)))
if isinstance(value, tuple):
if len(value) == 3:
filename, data, content_type = value
else:
filename, data = value
content_type = get_content_type(filename)
body_write_encode('Content-Disposition: form-data; name="%s"; '
'filename="%s"\r\n' % (fieldname, filename))
body_write(b('Content-Type: %s\r\n\r\n' %
(content_type,)))
else:
data = value
body_write_encode('Content-Disposition: form-data; name="%s"\r\n'
% (fieldname))
body_write(b'\r\n')
if isinstance(data, int):
data = str(data) # Backwards compatibility
if isinstance(data, six.text_type):
body_write_encode(data)
else:
body_write(data)
body_write(b'\r\n')
body_write(b('--%s--\r\n' % (boundary)))
content_type = b('multipart/form-data; boundary=%s' % boundary)
return body, content_type
def encode_multipart_formdata_stream(fields, boundary=None):
"""
Encode a dictionary of ``fields`` using the multipart/form-data MIME format.
:param fields:
Dictionary of fields or list of (key, value) or (key, value, MIME type)
field tuples. The key is treated as the field name, and the value as
the body of the form-data bytes. If the value is a tuple of two
elements, then the first element is treated as the filename of the
form-data section and a suitable MIME type is guessed based on the
filename. If the value is a tuple of three elements, then the third
element is treated as an explicit MIME type of the form-data section.
Field names and filenames must be unicode.
:param boundary:
If not specified, then a random boundary will be generated using
:func:`mimetools.choose_boundary`.
"""
body = []
def body_write(item):
if isinstance(item, bytes):
item = BytesIO(item)
elif isinstance(item, (str, unicode)):
item = StringIO(item)
body.append(item)
body_write_encode = lambda item: body.append(BytesIO(item.encode('utf-8')))
if boundary is None:
boundary = choose_boundary()
for fieldname, value in iter_fields(fields):
body_write_encode('--%s\r\n' % (boundary))
if isinstance(value, tuple):
if len(value) == 3:
filename, data, content_type = value
else:
filename, data = value
from mimetypes import guess_type
content_type, _ = guess_type(filename)
if content_type is None:
content_type = 'application/octet-stream'
body_write_encode('Content-Disposition: form-data; name="%s"; '
'filename="%s"\r\n' % (fieldname, filename))
body_write_encode('Content-Type: %s\r\n\r\n' % (content_type, ))
else:
data = value
body_write_encode('Content-Disposition: form-data; name="%s"\r\n' %
(fieldname))
body_write(b'\r\n')
if isinstance(data, (int, long)):
data = str(data) # Backwards compatibility
if isinstance(data, six.text_type):
body_write_encode(data)
else:
body_write(data)
body_write(b'\r\n')
body_write_encode('--%s--\r\n' % (boundary))
content_type = 'multipart/form-data; boundary=%s' % (boundary)
return body, content_type