mirror of
https://github.com/moparisthebest/curl
synced 2024-11-14 05:25:06 -05:00
100 lines
3.5 KiB
C
100 lines
3.5 KiB
C
#ifndef HEADER_CURL_HTTP_CHUNKS_H
|
|
#define HEADER_CURL_HTTP_CHUNKS_H
|
|
/***************************************************************************
|
|
* _ _ ____ _
|
|
* Project ___| | | | _ \| |
|
|
* / __| | | | |_) | |
|
|
* | (__| |_| | _ <| |___
|
|
* \___|\___/|_| \_\_____|
|
|
*
|
|
* Copyright (C) 1998 - 2021, 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
|
|
* are also available at https://curl.se/docs/copyright.html.
|
|
*
|
|
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
|
|
* copies of the Software, and permit persons to whom the Software is
|
|
* furnished to do so, under the terms of the COPYING file.
|
|
*
|
|
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
|
* KIND, either express or implied.
|
|
*
|
|
***************************************************************************/
|
|
|
|
struct connectdata;
|
|
|
|
/*
|
|
* The longest possible hexadecimal number we support in a chunked transfer.
|
|
* Neither RFC2616 nor the later HTTP specs define a maximum chunk size.
|
|
* For 64 bit curl_off_t we support 16 digits. For 32 bit, 8 digits.
|
|
*/
|
|
#define CHUNK_MAXNUM_LEN (SIZEOF_CURL_OFF_T * 2)
|
|
|
|
typedef enum {
|
|
/* await and buffer all hexadecimal digits until we get one that isn't a
|
|
hexadecimal digit. When done, we go CHUNK_LF */
|
|
CHUNK_HEX,
|
|
|
|
/* wait for LF, ignore all else */
|
|
CHUNK_LF,
|
|
|
|
/* We eat the amount of data specified. When done, we move on to the
|
|
POST_CR state. */
|
|
CHUNK_DATA,
|
|
|
|
/* POSTLF should get a CR and then a LF and nothing else, then move back to
|
|
HEX as the CRLF combination marks the end of a chunk. A missing CR is no
|
|
big deal. */
|
|
CHUNK_POSTLF,
|
|
|
|
/* Used to mark that we're out of the game. NOTE: that there's a 'dataleft'
|
|
field in the struct that will tell how many bytes that were not passed to
|
|
the client in the end of the last buffer! */
|
|
CHUNK_STOP,
|
|
|
|
/* At this point optional trailer headers can be found, unless the next line
|
|
is CRLF */
|
|
CHUNK_TRAILER,
|
|
|
|
/* A trailer CR has been found - next state is CHUNK_TRAILER_POSTCR.
|
|
Next char must be a LF */
|
|
CHUNK_TRAILER_CR,
|
|
|
|
/* A trailer LF must be found now, otherwise CHUNKE_BAD_CHUNK will be
|
|
signalled If this is an empty trailer CHUNKE_STOP will be signalled.
|
|
Otherwise the trailer will be broadcasted via Curl_client_write() and the
|
|
next state will be CHUNK_TRAILER */
|
|
CHUNK_TRAILER_POSTCR
|
|
} ChunkyState;
|
|
|
|
typedef enum {
|
|
CHUNKE_STOP = -1,
|
|
CHUNKE_OK = 0,
|
|
CHUNKE_TOO_LONG_HEX = 1,
|
|
CHUNKE_ILLEGAL_HEX,
|
|
CHUNKE_BAD_CHUNK,
|
|
CHUNKE_BAD_ENCODING,
|
|
CHUNKE_OUT_OF_MEMORY,
|
|
CHUNKE_PASSTHRU_ERROR, /* Curl_httpchunk_read() returns a CURLcode to use */
|
|
CHUNKE_LAST
|
|
} CHUNKcode;
|
|
|
|
const char *Curl_chunked_strerror(CHUNKcode code);
|
|
|
|
struct Curl_chunker {
|
|
char hexbuffer[ CHUNK_MAXNUM_LEN + 1]; /* +1 for null-terminator */
|
|
int hexindex;
|
|
ChunkyState state;
|
|
curl_off_t datasize;
|
|
size_t dataleft; /* untouched data amount at the end of the last buffer */
|
|
};
|
|
|
|
/* The following functions are defined in http_chunks.c */
|
|
void Curl_httpchunk_init(struct Curl_easy *data);
|
|
CHUNKcode Curl_httpchunk_read(struct Curl_easy *data, char *datap,
|
|
ssize_t length, ssize_t *wrote,
|
|
CURLcode *passthru);
|
|
|
|
#endif /* HEADER_CURL_HTTP_CHUNKS_H */
|