curl/lib/http_chunks.h
Yang Tse 4a5aa6682d Revert changes relative to lib/*.[ch] recent renaming
This reverts renaming and usage of lib/*.h header files done
28-12-2012, reverting 2 commits:

  f871de0... build: make use of 76 lib/*.h renamed files
  ffd8e12... build: rename 76 lib/*.h files

This also reverts removal of redundant include guard (redundant thanks
to changes in above commits) done 2-12-2013, reverting 1 commit:

  c087374... curl_setup.h: remove redundant include guard

This also reverts renaming and usage of lib/*.c source files done
3-12-2013, reverting 3 commits:

  13606bb... build: make use of 93 lib/*.c renamed files
  5b6e792... build: rename 93 lib/*.c files
  7d83dff... build: commit 13606bbfde follow-up 1

Start of related discussion thread:

  http://curl.haxx.se/mail/lib-2013-01/0012.html

Asking for confirmation on pushing this revertion commit:

  http://curl.haxx.se/mail/lib-2013-01/0048.html

Confirmation summary:

  http://curl.haxx.se/mail/lib-2013-01/0079.html

NOTICE: The list of 2 files that have been modified by other
intermixed commits, while renamed, and also by at least one
of the 6 commits this one reverts follows below. These 2 files
will exhibit a hole in history unless git's '--follow' option
is used when viewing logs.

  lib/curl_imap.h
  lib/curl_smtp.h
2013-01-06 18:20:27 +01:00

109 lines
3.6 KiB
C

#ifndef HEADER_CURL_HTTP_CHUNKS_H
#define HEADER_CURL_HTTP_CHUNKS_H
/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 1998 - 2007, 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 http://curl.haxx.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.
*
***************************************************************************/
/*
* The longest possible hexadecimal number we support in a chunked transfer.
* Weird enough, RFC2616 doesn't set a maximum size! Since we use strtoul()
* to convert it, we "only" support 2^32 bytes chunk data.
*/
#define MAXNUM_SIZE 16
typedef enum {
CHUNK_FIRST, /* never use */
/* In this we await and buffer all hexadecimal digits until we get one
that isn't a hexadecimal digit. When done, we go POSTHEX */
CHUNK_HEX,
/* We have received the hexadecimal digit and we eat all characters until
we get a CRLF pair. When we see a CR we go to the CR state. */
CHUNK_POSTHEX,
/* A single CR has been found and we should get a LF right away in this
state or we go back to POSTHEX. When LF is received, we go to DATA.
If the size given was zero, we set state to STOP and return. */
CHUNK_CR,
/* We eat the amount of data specified. When done, we move on to the
POST_CR state. */
CHUNK_DATA,
/* POSTCR should get a CR and nothing else, then move to POSTLF */
CHUNK_POSTCR,
/* POSTLF should get a LF and nothing else, then move back to HEX as the
CRLF combination marks the end of a chunk */
CHUNK_POSTLF,
/* Each Chunk body should end with a CRLF. Read a CR and nothing else,
then move to CHUNK_STOP */
CHUNK_STOPCR,
/* This is mainly used to really 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,
CHUNK_LAST /* never use */
} ChunkyState;
typedef enum {
CHUNKE_STOP = -1,
CHUNKE_OK = 0,
CHUNKE_TOO_LONG_HEX = 1,
CHUNKE_ILLEGAL_HEX,
CHUNKE_BAD_CHUNK,
CHUNKE_WRITE_ERROR,
CHUNKE_STATE_ERROR,
CHUNKE_BAD_ENCODING,
CHUNKE_OUT_OF_MEMORY,
CHUNKE_LAST
} CHUNKcode;
struct Curl_chunker {
char hexbuffer[ MAXNUM_SIZE + 1];
int hexindex;
ChunkyState state;
size_t datasize;
size_t dataleft; /* untouched data amount at the end of the last buffer */
};
#endif /* HEADER_CURL_HTTP_CHUNKS_H */