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http: decode transfer encoding first

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The unencoding stack is added to as Transfer-Encoding and
Content-Encoding fields are encountered with no distinction between the
two, meaning the stack will be incorrect if, e.g., the message has both
fields and a non-chunked Transfer-Encoding comes first. This commit
fixes this by ordering the stack with transfer encodings first.

Reviewed-by: Patrick Monnerat
Closes #10187
This commit is contained in:
Josh Brobst 2022-12-31 14:41:44 -05:00 • committed by Daniel Stenberg
parent fc9f22b46e
commit aa6e7a1f45
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GPG key ID: 5CC908FDB71E12C2
4 changed files with 239 additions and 15 deletions
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5
lib/content_encoding.h
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@ -7,7 +7,7 @@
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2022, Daniel Stenberg, <daniel@haxx.se>, et al.
* Copyright (C) 1998 - 2023, Daniel Stenberg, <daniel@haxx.se>, et al.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
@ -28,6 +28,7 @@
struct contenc_writer {
const struct content_encoding *handler; /* Encoding handler. */
struct contenc_writer *downstream; /* Downstream writer. */
unsigned int order; /* Ordering within writer stack. */
};
/* Content encoding writer. */
@ -46,7 +47,7 @@ struct content_encoding {
CURLcode Curl_build_unencoding_stack(struct Curl_easy *data,
const char *enclist, int maybechunked);
const char *enclist, int is_transfer);
CURLcode Curl_unencode_write(struct Curl_easy *data,
struct contenc_writer *writer,
const char *buf, size_t nbytes);