mirror of
git://anongit.mindrot.org/openssh.git
synced 2024-12-26 11:52:06 +00:00
499a0d5ada
[buffer.c buffer.h channels.c]
Fix condition where we could exit with a fatal error when an input
buffer became too large and the remote end had advertised a big window.
The problem was a mismatch in the backoff math between the channels code
and the buffer code, so make a buffer_check_alloc() function that the
channels code can use to propsectivly check whether an incremental
allocation will succeed. bz #1131, debugged with the assistance of
cove AT wildpackets.com; ok dtucker@ deraadt@
50 lines
1.5 KiB
C
50 lines
1.5 KiB
C
/* $OpenBSD: buffer.h,v 1.15 2006/04/16 00:48:52 djm Exp $ */
|
|
|
|
/*
|
|
* Author: Tatu Ylonen <ylo@cs.hut.fi>
|
|
* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
|
|
* All rights reserved
|
|
* Code for manipulating FIFO buffers.
|
|
*
|
|
* As far as I am concerned, the code I have written for this software
|
|
* can be used freely for any purpose. Any derived versions of this
|
|
* software must be clearly marked as such, and if the derived work is
|
|
* incompatible with the protocol description in the RFC file, it must be
|
|
* called by a name other than "ssh" or "Secure Shell".
|
|
*/
|
|
|
|
#ifndef BUFFER_H
|
|
#define BUFFER_H
|
|
|
|
typedef struct {
|
|
u_char *buf; /* Buffer for data. */
|
|
u_int alloc; /* Number of bytes allocated for data. */
|
|
u_int offset; /* Offset of first byte containing data. */
|
|
u_int end; /* Offset of last byte containing data. */
|
|
} Buffer;
|
|
|
|
void buffer_init(Buffer *);
|
|
void buffer_clear(Buffer *);
|
|
void buffer_free(Buffer *);
|
|
|
|
u_int buffer_len(Buffer *);
|
|
void *buffer_ptr(Buffer *);
|
|
|
|
void buffer_append(Buffer *, const void *, u_int);
|
|
void *buffer_append_space(Buffer *, u_int);
|
|
|
|
int buffer_check_alloc(Buffer *, u_int);
|
|
|
|
void buffer_get(Buffer *, void *, u_int);
|
|
|
|
void buffer_consume(Buffer *, u_int);
|
|
void buffer_consume_end(Buffer *, u_int);
|
|
|
|
void buffer_dump(Buffer *);
|
|
|
|
int buffer_get_ret(Buffer *, void *, u_int);
|
|
int buffer_consume_ret(Buffer *, u_int);
|
|
int buffer_consume_end_ret(Buffer *, u_int);
|
|
|
|
#endif /* BUFFER_H */
|