mirror of
https://github.com/Grasscutters/mitmproxy.git
synced 2024-11-23 16:17:49 +00:00
44ac64aa72
This commit introduces MultiDict, a multi-dictionary similar to ODict, but with improved semantics (as in the Headers class). MultiDict fixes a few issues that were present in the Request/Response API. In particular, `request.cookies["foo"] = "bar"` has previously been a no-op, as the cookies property returned a mutable _copy_ of the cookies.
88 lines
1.9 KiB
Python
88 lines
1.9 KiB
Python
"""
|
|
Utility functions for decoding response bodies.
|
|
"""
|
|
from __future__ import absolute_import
|
|
from io import BytesIO
|
|
import gzip
|
|
import zlib
|
|
|
|
|
|
ENCODINGS = {"identity", "gzip", "deflate"}
|
|
|
|
|
|
def decode(e, content):
|
|
if not isinstance(content, bytes):
|
|
return None
|
|
encoding_map = {
|
|
"identity": identity,
|
|
"gzip": decode_gzip,
|
|
"deflate": decode_deflate,
|
|
}
|
|
if e not in encoding_map:
|
|
return None
|
|
return encoding_map[e](content)
|
|
|
|
|
|
def encode(e, content):
|
|
if not isinstance(content, bytes):
|
|
return None
|
|
encoding_map = {
|
|
"identity": identity,
|
|
"gzip": encode_gzip,
|
|
"deflate": encode_deflate,
|
|
}
|
|
if e not in encoding_map:
|
|
return None
|
|
return encoding_map[e](content)
|
|
|
|
|
|
def identity(content):
|
|
"""
|
|
Returns content unchanged. Identity is the default value of
|
|
Accept-Encoding headers.
|
|
"""
|
|
return content
|
|
|
|
|
|
def decode_gzip(content):
|
|
gfile = gzip.GzipFile(fileobj=BytesIO(content))
|
|
try:
|
|
return gfile.read()
|
|
except (IOError, EOFError):
|
|
return None
|
|
|
|
|
|
def encode_gzip(content):
|
|
s = BytesIO()
|
|
gf = gzip.GzipFile(fileobj=s, mode='wb')
|
|
gf.write(content)
|
|
gf.close()
|
|
return s.getvalue()
|
|
|
|
|
|
def decode_deflate(content):
|
|
"""
|
|
Returns decompressed data for DEFLATE. Some servers may respond with
|
|
compressed data without a zlib header or checksum. An undocumented
|
|
feature of zlib permits the lenient decompression of data missing both
|
|
values.
|
|
|
|
http://bugs.python.org/issue5784
|
|
"""
|
|
try:
|
|
try:
|
|
return zlib.decompress(content)
|
|
except zlib.error:
|
|
return zlib.decompress(content, -15)
|
|
except zlib.error:
|
|
return None
|
|
|
|
|
|
def encode_deflate(content):
|
|
"""
|
|
Returns compressed content, always including zlib header and checksum.
|
|
"""
|
|
return zlib.compress(content)
|
|
|
|
__all__ = ["ENCODINGS", "encode", "decode"]
|