2 * Author: Tatu Ylonen <ylo@cs.hut.fi>
3 * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
5 * Interface to packet compression for ssh.
7 * As far as I am concerned, the code I have written for this software
8 * can be used freely for any purpose. Any derived versions of this
9 * software must be clearly marked as such, and if the derived work is
10 * incompatible with the protocol description in the RFC file, it must be
11 * called by a name other than "ssh" or "Secure Shell".
14 /* RCSID("$OpenBSD: compress.h,v 1.9 2001/06/26 06:32:50 itojun Exp $"); */
20 * Initializes compression; level is compression level from 1 to 9 (as in
23 void buffer_compress_init_send(int);
24 void buffer_compress_init_recv(void);
26 /* Frees any data structures allocated by buffer_compress_init. */
27 void buffer_compress_uninit(void);
30 * Compresses the contents of input_buffer into output_buffer. All packets
31 * compressed using this function will form a single compressed data stream;
32 * however, data will be flushed at the end of every call so that each
33 * output_buffer can be decompressed independently (but in the appropriate
34 * order since they together form a single compression stream) by the
35 * receiver. This appends the compressed data to the output buffer.
37 void buffer_compress(Buffer *, Buffer *);
40 * Uncompresses the contents of input_buffer into output_buffer. All packets
41 * uncompressed using this function will form a single compressed data
42 * stream; however, data will be flushed at the end of every call so that
43 * each output_buffer. This must be called for the same size units that the
44 * buffer_compress was called, and in the same order that buffers compressed
45 * with that. This appends the uncompressed data to the output buffer.
47 void buffer_uncompress(Buffer *, Buffer *);
49 #endif /* COMPRESS_H */