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Diffstat (limited to 'crypto/openssh/compress.h')
| -rw-r--r-- | crypto/openssh/compress.h | 48 |
1 files changed, 48 insertions, 0 deletions
diff --git a/crypto/openssh/compress.h b/crypto/openssh/compress.h new file mode 100644 index 0000000..5757164 --- /dev/null +++ b/crypto/openssh/compress.h @@ -0,0 +1,48 @@ +/* + * Author: Tatu Ylonen <ylo@cs.hut.fi> + * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland + * All rights reserved + * Interface to packet compression for ssh. + * + * 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". + */ + +/* RCSID("$OpenBSD: compress.h,v 1.6 2000/09/07 20:27:50 deraadt 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 */ |
