kex error fixed; order encryption, hash, and kex algorithms properly, strongest preferred
line source
+ − /* -*-mode:java; c-basic-offset:2; indent-tabs-mode:nil -*- */
+ − /*
+ − Copyright (c) 2000-2011 ymnk, JCraft,Inc. All rights reserved.
+ −
+ − Redistribution and use in source and binary forms, with or without
+ − modification, are permitted provided that the following conditions are met:
+ −
+ − 1. Redistributions of source code must retain the above copyright notice,
+ − this list of conditions and the following disclaimer.
+ −
+ − 2. Redistributions in binary form must reproduce the above copyright
+ − notice, this list of conditions and the following disclaimer in
+ − the documentation and/or other materials provided with the distribution.
+ −
+ − 3. The names of the authors may not be used to endorse or promote products
+ − derived from this software without specific prior written permission.
+ −
+ − THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED WARRANTIES,
+ − INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
+ − FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL JCRAFT,
+ − INC. OR ANY CONTRIBUTORS TO THIS SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT,
+ − INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ − LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
+ − OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ − LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ − NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ − EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ − */
+ − /*
+ − * This program is based on zlib-1.1.3, so all credit should go authors
+ − * Jean-loup Gailly(jloup@gzip.org) and Mark Adler(madler@alumni.caltech.edu)
+ − * and contributors of zlib.
+ − */
+ −
+ − package com.jcraft.jzlib;
+ −
+ − /**
+ − * ZStream
+ − *
+ − * @deprecated Not for public use in the future.
+ − */
+ − @Deprecated
+ − public class ZStream{
+ −
+ − static final private int MAX_WBITS=15; // 32K LZ77 window
+ − static final private int DEF_WBITS=MAX_WBITS;
+ −
+ − static final private int Z_NO_FLUSH=0;
+ − static final private int Z_PARTIAL_FLUSH=1;
+ − static final private int Z_SYNC_FLUSH=2;
+ − static final private int Z_FULL_FLUSH=3;
+ − static final private int Z_FINISH=4;
+ −
+ − static final private int MAX_MEM_LEVEL=9;
+ −
+ − static final private int Z_OK=0;
+ − static final private int Z_STREAM_END=1;
+ − static final private int Z_NEED_DICT=2;
+ − static final private int Z_ERRNO=-1;
+ − static final private int Z_STREAM_ERROR=-2;
+ − static final private int Z_DATA_ERROR=-3;
+ − static final private int Z_MEM_ERROR=-4;
+ − static final private int Z_BUF_ERROR=-5;
+ − static final private int Z_VERSION_ERROR=-6;
+ −
+ − public byte[] next_in; // next input byte
+ − public int next_in_index;
+ − public int avail_in; // number of bytes available at next_in
+ − public long total_in; // total nb of input bytes read so far
+ −
+ − public byte[] next_out; // next output byte should be put there
+ − public int next_out_index;
+ − public int avail_out; // remaining free space at next_out
+ − public long total_out; // total nb of bytes output so far
+ −
+ − public String msg;
+ −
+ − Deflate dstate;
+ − Inflate istate;
+ −
+ − int data_type; // best guess about the data type: ascii or binary
+ −
+ − Checksum adler;
+ −
+ − public ZStream(){
+ − this(new Adler32());
+ − }
+ −
+ − public ZStream(Checksum adler){
+ − this.adler=adler;
+ − }
+ −
+ − public int inflateInit(){
+ − return inflateInit(DEF_WBITS);
+ − }
+ − public int inflateInit(boolean nowrap){
+ − return inflateInit(DEF_WBITS, nowrap);
+ − }
+ − public int inflateInit(int w){
+ − return inflateInit(w, false);
+ − }
+ − public int inflateInit(JZlib.WrapperType wrapperType) {
+ − return inflateInit(DEF_WBITS, wrapperType);
+ − }
+ − public int inflateInit(int w, JZlib.WrapperType wrapperType) {
+ − boolean nowrap = false;
+ − if(wrapperType == JZlib.W_NONE){
+ − nowrap = true;
+ − }
+ − else if(wrapperType == JZlib.W_GZIP) {
+ − w += 16;
+ − }
+ − else if(wrapperType == JZlib.W_ANY) {
+ − w |= Inflate.INFLATE_ANY;
+ − }
+ − else if(wrapperType == JZlib.W_ZLIB) {
+ − }
+ − return inflateInit(w, nowrap);
+ − }
+ − public int inflateInit(int w, boolean nowrap){
+ − istate=new Inflate(this);
+ − return istate.inflateInit(nowrap?-w:w);
+ − }
+ −
+ − public int inflate(int f){
+ − if(istate==null) return Z_STREAM_ERROR;
+ − return istate.inflate(f);
+ − }
+ − public int inflateEnd(){
+ − if(istate==null) return Z_STREAM_ERROR;
+ − int ret=istate.inflateEnd();
+ − // istate = null;
+ − return ret;
+ − }
+ − public int inflateSync(){
+ − if(istate == null)
+ − return Z_STREAM_ERROR;
+ − return istate.inflateSync();
+ − }
+ − public int inflateSyncPoint(){
+ − if(istate == null)
+ − return Z_STREAM_ERROR;
+ − return istate.inflateSyncPoint();
+ − }
+ − public int inflateSetDictionary(byte[] dictionary, int dictLength){
+ − if(istate == null)
+ − return Z_STREAM_ERROR;
+ − return istate.inflateSetDictionary(dictionary, dictLength);
+ − }
+ − public boolean inflateFinished(){
+ − return istate.mode==12 /*DONE*/;
+ − }
+ −
+ − public int deflateInit(int level){
+ − return deflateInit(level, MAX_WBITS);
+ − }
+ − public int deflateInit(int level, boolean nowrap){
+ − return deflateInit(level, MAX_WBITS, nowrap);
+ − }
+ − public int deflateInit(int level, int bits){
+ − return deflateInit(level, bits, false);
+ − }
+ − public int deflateInit(int level, int bits, int memlevel, JZlib.WrapperType wrapperType){
+ − if(bits < 9 || bits > 15){
+ − return Z_STREAM_ERROR;
+ − }
+ − if(wrapperType == JZlib.W_NONE) {
+ − bits *= -1;
+ − }
+ − else if(wrapperType == JZlib.W_GZIP) {
+ − bits += 16;
+ − }
+ − else if(wrapperType == JZlib.W_ANY) {
+ − return Z_STREAM_ERROR;
+ − }
+ − else if(wrapperType == JZlib.W_ZLIB) {
+ − }
+ − return this.deflateInit(level, bits, memlevel);
+ − }
+ − public int deflateInit(int level, int bits, int memlevel){
+ − dstate=new Deflate(this);
+ − return dstate.deflateInit(level, bits, memlevel);
+ − }
+ − public int deflateInit(int level, int bits, boolean nowrap){
+ − dstate=new Deflate(this);
+ − return dstate.deflateInit(level, nowrap?-bits:bits);
+ − }
+ − public int deflate(int flush){
+ − if(dstate==null){
+ − return Z_STREAM_ERROR;
+ − }
+ − return dstate.deflate(flush);
+ − }
+ − public int deflateEnd(){
+ − if(dstate==null) return Z_STREAM_ERROR;
+ − int ret=dstate.deflateEnd();
+ − dstate=null;
+ − return ret;
+ − }
+ − public int deflateParams(int level, int strategy){
+ − if(dstate==null) return Z_STREAM_ERROR;
+ − return dstate.deflateParams(level, strategy);
+ − }
+ − public int deflateSetDictionary (byte[] dictionary, int dictLength){
+ − if(dstate == null)
+ − return Z_STREAM_ERROR;
+ − return dstate.deflateSetDictionary(dictionary, dictLength);
+ − }
+ −
+ − // Flush as much pending output as possible. All deflate() output goes
+ − // through this function so some applications may wish to modify it
+ − // to avoid allocating a large strm->next_out buffer and copying into it.
+ − // (See also read_buf()).
+ − void flush_pending(){
+ − int len=dstate.pending;
+ −
+ − if(len>avail_out) len=avail_out;
+ − if(len==0) return;
+ −
+ − if(dstate.pending_buf.length<=dstate.pending_out ||
+ − next_out.length<=next_out_index ||
+ − dstate.pending_buf.length<(dstate.pending_out+len) ||
+ − next_out.length<(next_out_index+len)){
+ − //System.out.println(dstate.pending_buf.length+", "+dstate.pending_out+
+ − // ", "+next_out.length+", "+next_out_index+", "+len);
+ − //System.out.println("avail_out="+avail_out);
+ − }
+ −
+ − System.arraycopy(dstate.pending_buf, dstate.pending_out,
+ − next_out, next_out_index, len);
+ −
+ − next_out_index+=len;
+ − dstate.pending_out+=len;
+ − total_out+=len;
+ − avail_out-=len;
+ − dstate.pending-=len;
+ − if(dstate.pending==0){
+ − dstate.pending_out=0;
+ − }
+ − }
+ −
+ − // Read a new buffer from the current input stream, update the adler32
+ − // and total number of bytes read. All deflate() input goes through
+ − // this function so some applications may wish to modify it to avoid
+ − // allocating a large strm->next_in buffer and copying from it.
+ − // (See also flush_pending()).
+ − int read_buf(byte[] buf, int start, int size) {
+ − int len=avail_in;
+ −
+ − if(len>size) len=size;
+ − if(len==0) return 0;
+ −
+ − avail_in-=len;
+ −
+ − if(dstate.wrap!=0) {
+ − adler.update(next_in, next_in_index, len);
+ − }
+ − System.arraycopy(next_in, next_in_index, buf, start, len);
+ − next_in_index += len;
+ − total_in += len;
+ − return len;
+ − }
+ −
+ − public long getAdler(){
+ − return adler.getValue();
+ − }
+ −
+ − public void free(){
+ − next_in=null;
+ − next_out=null;
+ − msg=null;
+ − }
+ −
+ − public void setOutput(byte[] buf){
+ − setOutput(buf, 0, buf.length);
+ − }
+ −
+ − public void setOutput(byte[] buf, int off, int len){
+ − next_out = buf;
+ − next_out_index = off;
+ − avail_out = len;
+ − }
+ −
+ − public void setInput(byte[] buf){
+ − setInput(buf, 0, buf.length, false);
+ − }
+ −
+ − public void setInput(byte[] buf, boolean append){
+ − setInput(buf, 0, buf.length, append);
+ − }
+ −
+ − public void setInput(byte[] buf, int off, int len, boolean append){
+ − if(len<=0 && append && next_in!=null) return;
+ −
+ − if(avail_in>0 && append){
+ − byte[] tmp = new byte[avail_in+len];
+ − System.arraycopy(next_in, next_in_index, tmp, 0, avail_in);
+ − System.arraycopy(buf, off, tmp, avail_in, len);
+ − next_in=tmp;
+ − next_in_index=0;
+ − avail_in+=len;
+ − }
+ − else{
+ − next_in=buf;
+ − next_in_index=off;
+ − avail_in=len;
+ − }
+ − }
+ −
+ − public byte[] getNextIn(){
+ − return next_in;
+ − }
+ −
+ − public void setNextIn(byte[] next_in){
+ − this.next_in = next_in;
+ − }
+ −
+ − public int getNextInIndex(){
+ − return next_in_index;
+ − }
+ −
+ − public void setNextInIndex(int next_in_index){
+ − this.next_in_index = next_in_index;
+ − }
+ −
+ − public int getAvailIn(){
+ − return avail_in;
+ − }
+ −
+ − public void setAvailIn(int avail_in){
+ − this.avail_in = avail_in;
+ − }
+ −
+ − public byte[] getNextOut(){
+ − return next_out;
+ − }
+ −
+ − public void setNextOut(byte[] next_out){
+ − this.next_out = next_out;
+ − }
+ −
+ − public int getNextOutIndex(){
+ − return next_out_index;
+ − }
+ −
+ − public void setNextOutIndex(int next_out_index){
+ − this.next_out_index = next_out_index;
+ − }
+ −
+ − public int getAvailOut(){
+ − return avail_out;
+ −
+ − }
+ −
+ − public void setAvailOut(int avail_out){
+ − this.avail_out = avail_out;
+ − }
+ −
+ − public long getTotalOut(){
+ − return total_out;
+ − }
+ −
+ − public long getTotalIn(){
+ − return total_in;
+ − }
+ −
+ − public String getMessage(){
+ − return msg;
+ − }
+ −
+ − /**
+ − * Those methods are expected to be override by Inflater and Deflater.
+ − * In the future, they will become abstract methods.
+ − */
+ − public int end(){ return Z_OK; }
+ − public boolean finished(){ return false; }
+ − }