version 1.9, 2000/09/07 20:27:50 |
version 1.9.2.2, 2001/02/19 17:18:50 |
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#include "includes.h" |
#include "includes.h" |
RCSID("$OpenBSD$"); |
RCSID("$OpenBSD$"); |
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#include "ssh.h" |
#include "log.h" |
#include "buffer.h" |
#include "buffer.h" |
#include "zlib.h" |
#include "zlib.h" |
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#include "compress.h" |
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static z_stream incoming_stream; |
static z_stream incoming_stream; |
static z_stream outgoing_stream; |
static z_stream outgoing_stream; |
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/* Frees any data structures allocated for compression. */ |
/* Frees any data structures allocated for compression. */ |
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void |
void |
buffer_compress_uninit() |
buffer_compress_uninit(void) |
{ |
{ |
debug("compress outgoing: raw data %lu, compressed %lu, factor %.2f", |
debug("compress outgoing: raw data %lu, compressed %lu, factor %.2f", |
outgoing_stream.total_in, outgoing_stream.total_out, |
outgoing_stream.total_in, outgoing_stream.total_out, |
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return; |
return; |
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/* Input is the contents of the input buffer. */ |
/* Input is the contents of the input buffer. */ |
outgoing_stream.next_in = (unsigned char *) buffer_ptr(input_buffer); |
outgoing_stream.next_in = (u_char *) buffer_ptr(input_buffer); |
outgoing_stream.avail_in = buffer_len(input_buffer); |
outgoing_stream.avail_in = buffer_len(input_buffer); |
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/* Loop compressing until deflate() returns with avail_out != 0. */ |
/* Loop compressing until deflate() returns with avail_out != 0. */ |
do { |
do { |
/* Set up fixed-size output buffer. */ |
/* Set up fixed-size output buffer. */ |
outgoing_stream.next_out = (unsigned char *)buf; |
outgoing_stream.next_out = (u_char *)buf; |
outgoing_stream.avail_out = sizeof(buf); |
outgoing_stream.avail_out = sizeof(buf); |
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/* Compress as much data into the buffer as possible. */ |
/* Compress as much data into the buffer as possible. */ |
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char buf[4096]; |
char buf[4096]; |
int status; |
int status; |
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incoming_stream.next_in = (unsigned char *) buffer_ptr(input_buffer); |
incoming_stream.next_in = (u_char *) buffer_ptr(input_buffer); |
incoming_stream.avail_in = buffer_len(input_buffer); |
incoming_stream.avail_in = buffer_len(input_buffer); |
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for (;;) { |
for (;;) { |
/* Set up fixed-size output buffer. */ |
/* Set up fixed-size output buffer. */ |
incoming_stream.next_out = (unsigned char *) buf; |
incoming_stream.next_out = (u_char *) buf; |
incoming_stream.avail_out = sizeof(buf); |
incoming_stream.avail_out = sizeof(buf); |
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status = inflate(&incoming_stream, Z_PARTIAL_FLUSH); |
status = inflate(&incoming_stream, Z_PARTIAL_FLUSH); |