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authordes <des@FreeBSD.org>2008-07-22 17:13:05 +0000
committerdes <des@FreeBSD.org>2008-07-22 17:13:05 +0000
commit624d93001f28e236c027516d88282351eb7bffbe (patch)
tree4b825dc642cb6eb9a060e54bf8d69288fbee4904 /crypto/openssh/compress.c
parentf591b3e29c677bff2b0f0d482490554c419128fd (diff)
downloadFreeBSD-src-624d93001f28e236c027516d88282351eb7bffbe.zip
FreeBSD-src-624d93001f28e236c027516d88282351eb7bffbe.tar.gz
Flatten the OpenSSH vendor tree for 3.x and newer.
Diffstat (limited to 'crypto/openssh/compress.c')
-rw-r--r--crypto/openssh/compress.c166
1 files changed, 0 insertions, 166 deletions
diff --git a/crypto/openssh/compress.c b/crypto/openssh/compress.c
deleted file mode 100644
index c058d22..0000000
--- a/crypto/openssh/compress.c
+++ /dev/null
@@ -1,166 +0,0 @@
-/* $OpenBSD: compress.c,v 1.25 2006/08/06 01:13:32 stevesk Exp $ */
-/*
- * 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".
- */
-
-#include "includes.h"
-
-#include <sys/types.h>
-
-#include <stdarg.h>
-#include <zlib.h>
-
-#include "log.h"
-#include "buffer.h"
-#include "compress.h"
-
-z_stream incoming_stream;
-z_stream outgoing_stream;
-static int compress_init_send_called = 0;
-static int compress_init_recv_called = 0;
-static int inflate_failed = 0;
-static int deflate_failed = 0;
-
-/*
- * Initializes compression; level is compression level from 1 to 9
- * (as in gzip).
- */
-
-void
-buffer_compress_init_send(int level)
-{
- if (compress_init_send_called == 1)
- deflateEnd(&outgoing_stream);
- compress_init_send_called = 1;
- debug("Enabling compression at level %d.", level);
- if (level < 1 || level > 9)
- fatal("Bad compression level %d.", level);
- deflateInit(&outgoing_stream, level);
-}
-void
-buffer_compress_init_recv(void)
-{
- if (compress_init_recv_called == 1)
- inflateEnd(&incoming_stream);
- compress_init_recv_called = 1;
- inflateInit(&incoming_stream);
-}
-
-/* Frees any data structures allocated for compression. */
-
-void
-buffer_compress_uninit(void)
-{
- debug("compress outgoing: raw data %llu, compressed %llu, factor %.2f",
- (unsigned long long)outgoing_stream.total_in,
- (unsigned long long)outgoing_stream.total_out,
- outgoing_stream.total_in == 0 ? 0.0 :
- (double) outgoing_stream.total_out / outgoing_stream.total_in);
- debug("compress incoming: raw data %llu, compressed %llu, factor %.2f",
- (unsigned long long)incoming_stream.total_out,
- (unsigned long long)incoming_stream.total_in,
- incoming_stream.total_out == 0 ? 0.0 :
- (double) incoming_stream.total_in / incoming_stream.total_out);
- if (compress_init_recv_called == 1 && inflate_failed == 0)
- inflateEnd(&incoming_stream);
- if (compress_init_send_called == 1 && deflate_failed == 0)
- deflateEnd(&outgoing_stream);
-}
-
-/*
- * 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)
-{
- u_char buf[4096];
- int status;
-
- /* This case is not handled below. */
- if (buffer_len(input_buffer) == 0)
- return;
-
- /* Input is the contents of the input buffer. */
- outgoing_stream.next_in = buffer_ptr(input_buffer);
- outgoing_stream.avail_in = buffer_len(input_buffer);
-
- /* Loop compressing until deflate() returns with avail_out != 0. */
- do {
- /* Set up fixed-size output buffer. */
- outgoing_stream.next_out = buf;
- outgoing_stream.avail_out = sizeof(buf);
-
- /* Compress as much data into the buffer as possible. */
- status = deflate(&outgoing_stream, Z_PARTIAL_FLUSH);
- switch (status) {
- case Z_OK:
- /* Append compressed data to output_buffer. */
- buffer_append(output_buffer, buf,
- sizeof(buf) - outgoing_stream.avail_out);
- break;
- default:
- deflate_failed = 1;
- fatal("buffer_compress: deflate returned %d", status);
- /* NOTREACHED */
- }
- } while (outgoing_stream.avail_out == 0);
-}
-
-/*
- * 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)
-{
- u_char buf[4096];
- int status;
-
- incoming_stream.next_in = buffer_ptr(input_buffer);
- incoming_stream.avail_in = buffer_len(input_buffer);
-
- for (;;) {
- /* Set up fixed-size output buffer. */
- incoming_stream.next_out = buf;
- incoming_stream.avail_out = sizeof(buf);
-
- status = inflate(&incoming_stream, Z_PARTIAL_FLUSH);
- switch (status) {
- case Z_OK:
- buffer_append(output_buffer, buf,
- sizeof(buf) - incoming_stream.avail_out);
- break;
- case Z_BUF_ERROR:
- /*
- * Comments in zlib.h say that we should keep calling
- * inflate() until we get an error. This appears to
- * be the error that we get.
- */
- return;
- default:
- inflate_failed = 1;
- fatal("buffer_uncompress: inflate returned %d", status);
- /* NOTREACHED */
- }
- }
-}
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