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Annotation of src/usr.bin/ssh/compress.h, Revision 1.4.2.3

1.1       deraadt     1: /*
1.2       deraadt     2:  * Author: Tatu Ylonen <ylo@cs.hut.fi>
                      3:  * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
                      4:  *                    All rights reserved
                      5:  * Interface to packet compression for ssh.
1.4       markus      6:  *
1.4.2.2   jason       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".
1.2       deraadt    12:  */
1.1       deraadt    13:
1.4.2.3 ! jason      14: /* RCSID("$OpenBSD: compress.h,v 1.7 2000/12/20 19:37:22 markus Exp $"); */
1.1       deraadt    15:
                     16: #ifndef COMPRESS_H
                     17: #define COMPRESS_H
                     18:
1.3       markus     19: /*
                     20:  * Initializes compression; level is compression level from 1 to 9 (as in
                     21:  * gzip).
                     22:  */
1.2       deraadt    23: void    buffer_compress_init(int level);
1.1       deraadt    24:
                     25: /* Frees any data structures allocated by buffer_compress_init. */
1.4.2.3 ! jason      26: void    buffer_compress_uninit(void);
1.1       deraadt    27:
1.3       markus     28: /*
                     29:  * Compresses the contents of input_buffer into output_buffer.  All packets
                     30:  * compressed using this function will form a single compressed data stream;
                     31:  * however, data will be flushed at the end of every call so that each
                     32:  * output_buffer can be decompressed independently (but in the appropriate
                     33:  * order since they together form a single compression stream) by the
                     34:  * receiver.  This appends the compressed data to the output buffer.
                     35:  */
1.2       deraadt    36: void    buffer_compress(Buffer * input_buffer, Buffer * output_buffer);
1.1       deraadt    37:
1.3       markus     38: /*
                     39:  * Uncompresses the contents of input_buffer into output_buffer.  All packets
                     40:  * uncompressed using this function will form a single compressed data
                     41:  * stream; however, data will be flushed at the end of every call so that
                     42:  * each output_buffer.  This must be called for the same size units that the
                     43:  * buffer_compress was called, and in the same order that buffers compressed
                     44:  * with that.  This appends the uncompressed data to the output buffer.
                     45:  */
1.2       deraadt    46: void    buffer_uncompress(Buffer * input_buffer, Buffer * output_buffer);
1.1       deraadt    47:
1.2       deraadt    48: #endif                         /* COMPRESS_H */