openssh/compress.h
Damien Miller 5428f646ad - More reformatting merged from OpenBSD CVS
- Merged OpenBSD CVS changes:
   - [channels.c]
     report from mrwizard@psu.edu via djm@ibs.com.au
   - [channels.c]
     set SO_REUSEADDR and SO_LINGER for forwarded ports.
     chip@valinux.com via damien@ibs.com.au
   - [nchan.c]
     it's not an error() if shutdown_write failes in nchan.
   - [readconf.c]
     remove dead #ifdef-0-code
   - [readconf.c servconf.c]
     strcasecmp instead of tolower
   - [scp.c]
     progress meter overflow fix from damien@ibs.com.au
   - [ssh-add.1 ssh-add.c]
     SSH_ASKPASS support
   - [ssh.1 ssh.c]
     postpone fork_after_authentication until command execution,
     request/patch from jahakala@cc.jyu.fi via damien@ibs.com.au
     plus: use daemon() for backgrounding
1999-11-25 11:54:57 +11:00

51 lines
1.7 KiB
C

/*
*
* compress.h
*
* Author: Tatu Ylonen <ylo@cs.hut.fi>
*
* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
* All rights reserved
*
* Created: Wed Oct 25 22:12:46 1995 ylo
*
* Interface to packet compression for ssh.
*
*/
/* RCSID("$Id: compress.h,v 1.3 1999/11/25 00:54:59 damien Exp $"); */
#ifndef COMPRESS_H
#define COMPRESS_H
/*
* Initializes compression; level is compression level from 1 to 9 (as in
* gzip).
*/
void buffer_compress_init(int level);
/* Frees any data structures allocated by buffer_compress_init. */
void buffer_compress_uninit();
/*
* Compresses the contents of input_buffer into output_buffer. All packets
* compressed using this function will form a single compressed data stream;
* however, data will be flushed at the end of every call so that each
* output_buffer can be decompressed independently (but in the appropriate
* order since they together form a single compression stream) by the
* receiver. This appends the compressed data to the output buffer.
*/
void buffer_compress(Buffer * input_buffer, Buffer * output_buffer);
/*
* Uncompresses the contents of input_buffer into output_buffer. All packets
* uncompressed using this function will form a single compressed data
* stream; however, data will be flushed at the end of every call so that
* each output_buffer. This must be called for the same size units that the
* buffer_compress was called, and in the same order that buffers compressed
* with that. This appends the uncompressed data to the output buffer.
*/
void buffer_uncompress(Buffer * input_buffer, Buffer * output_buffer);
#endif /* COMPRESS_H */