Annotation of src/usr.bin/ssh/compress.h, Revision 1.4.2.1
1.1 deraadt 1: /*
1.4 markus 2: *
1.2 deraadt 3: * compress.h
1.4 markus 4: *
1.2 deraadt 5: * Author: Tatu Ylonen <ylo@cs.hut.fi>
1.4 markus 6: *
1.2 deraadt 7: * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
8: * All rights reserved
1.4 markus 9: *
1.2 deraadt 10: * Created: Wed Oct 25 22:12:46 1995 ylo
1.4 markus 11: *
1.2 deraadt 12: * Interface to packet compression for ssh.
1.4 markus 13: *
1.2 deraadt 14: */
1.1 deraadt 15:
1.4.2.1 ! jason 16: /* RCSID("$OpenBSD: compress.h,v 1.5 2000/06/20 01:39:40 markus Exp $"); */
1.1 deraadt 17:
18: #ifndef COMPRESS_H
19: #define COMPRESS_H
20:
1.3 markus 21: /*
22: * Initializes compression; level is compression level from 1 to 9 (as in
23: * gzip).
24: */
1.2 deraadt 25: void buffer_compress_init(int level);
1.1 deraadt 26:
27: /* Frees any data structures allocated by buffer_compress_init. */
1.2 deraadt 28: void buffer_compress_uninit();
1.1 deraadt 29:
1.3 markus 30: /*
31: * Compresses the contents of input_buffer into output_buffer. All packets
32: * compressed using this function will form a single compressed data stream;
33: * however, data will be flushed at the end of every call so that each
34: * output_buffer can be decompressed independently (but in the appropriate
35: * order since they together form a single compression stream) by the
36: * receiver. This appends the compressed data to the output buffer.
37: */
1.2 deraadt 38: void buffer_compress(Buffer * input_buffer, Buffer * output_buffer);
1.1 deraadt 39:
1.3 markus 40: /*
41: * Uncompresses the contents of input_buffer into output_buffer. All packets
42: * uncompressed using this function will form a single compressed data
43: * stream; however, data will be flushed at the end of every call so that
44: * each output_buffer. This must be called for the same size units that the
45: * buffer_compress was called, and in the same order that buffers compressed
46: * with that. This appends the uncompressed data to the output buffer.
47: */
1.2 deraadt 48: void buffer_uncompress(Buffer * input_buffer, Buffer * output_buffer);
1.1 deraadt 49:
1.2 deraadt 50: #endif /* COMPRESS_H */