Mercurial > 510Connectbot
view src/com/trilead/ssh2/packets/TypesWriter.java @ 118:9c0aaf27ce28
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author | Carl Byington <carl@five-ten-sg.com> |
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date | Wed, 18 Jun 2014 16:53:58 -0700 |
parents | 0ce5cc452d02 |
children |
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package com.trilead.ssh2.packets; import java.io.UnsupportedEncodingException; import java.math.BigInteger; /** * TypesWriter. * * @author Christian Plattner, plattner@trilead.com * @version $Id: TypesWriter.java,v 1.2 2008/04/01 12:38:09 cplattne Exp $ */ public class TypesWriter { byte arr[]; int pos; public TypesWriter() { arr = new byte[256]; pos = 0; } private void resize(int len) { byte new_arr[] = new byte[len]; System.arraycopy(arr, 0, new_arr, 0, arr.length); arr = new_arr; } public int length() { return pos; } public byte[] getBytes() { byte[] dst = new byte[pos]; System.arraycopy(arr, 0, dst, 0, pos); return dst; } public void getBytes(byte dst[]) { System.arraycopy(arr, 0, dst, 0, pos); } public void writeUINT32(int val, int off) { if ((off + 4) > arr.length) resize(off + 32); arr[off++] = (byte)(val >> 24); arr[off++] = (byte)(val >> 16); arr[off++] = (byte)(val >> 8); arr[off++] = (byte) val; } public void writeUINT32(int val) { writeUINT32(val, pos); pos += 4; } public void writeUINT64(long val) { if ((pos + 8) > arr.length) resize(arr.length + 32); arr[pos++] = (byte)(val >> 56); arr[pos++] = (byte)(val >> 48); arr[pos++] = (byte)(val >> 40); arr[pos++] = (byte)(val >> 32); arr[pos++] = (byte)(val >> 24); arr[pos++] = (byte)(val >> 16); arr[pos++] = (byte)(val >> 8); arr[pos++] = (byte) val; } public void writeBoolean(boolean v) { if ((pos + 1) > arr.length) resize(arr.length + 32); arr[pos++] = v ? (byte) 1 : (byte) 0; } public void writeByte(int v, int off) { if ((off + 1) > arr.length) resize(off + 32); arr[off] = (byte) v; } public void writeByte(int v) { writeByte(v, pos); pos++; } public void writeMPInt(BigInteger b) { byte raw[] = b.toByteArray(); if ((raw.length == 1) && (raw[0] == 0)) writeUINT32(0); /* String with zero bytes of data */ else writeString(raw, 0, raw.length); } public void writeBytes(byte[] buff) { writeBytes(buff, 0, buff.length); } public void writeBytes(byte[] buff, int off, int len) { if ((pos + len) > arr.length) resize(arr.length + len + 32); System.arraycopy(buff, off, arr, pos, len); pos += len; } public void writeString(byte[] buff, int off, int len) { writeUINT32(len); writeBytes(buff, off, len); } public void writeString(String v) { byte[] b; try { /* All Java JVMs must support ISO-8859-1 */ b = v.getBytes("ISO-8859-1"); } catch (UnsupportedEncodingException ignore) { b = v.getBytes(); } writeUINT32(b.length); writeBytes(b, 0, b.length); } public void writeString(String v, String charsetName) throws UnsupportedEncodingException { byte[] b = (charsetName == null) ? v.getBytes() : v.getBytes(charsetName); writeUINT32(b.length); writeBytes(b, 0, b.length); } public void writeNameList(String v[]) { StringBuffer sb = new StringBuffer(); for (int i = 0; i < v.length; i++) { if (i > 0) sb.append(','); sb.append(v[i]); } writeString(sb.toString()); } }