Mercurial > 510Connectbot
comparison src/com/trilead/ssh2/packets/TypesWriter.java @ 0:0ce5cc452d02
initial version
author | Carl Byington <carl@five-ten-sg.com> |
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date | Thu, 22 May 2014 10:41:19 -0700 |
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-1:000000000000 | 0:0ce5cc452d02 |
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1 | |
2 package com.trilead.ssh2.packets; | |
3 | |
4 import java.io.UnsupportedEncodingException; | |
5 import java.math.BigInteger; | |
6 | |
7 /** | |
8 * TypesWriter. | |
9 * | |
10 * @author Christian Plattner, plattner@trilead.com | |
11 * @version $Id: TypesWriter.java,v 1.2 2008/04/01 12:38:09 cplattne Exp $ | |
12 */ | |
13 public class TypesWriter { | |
14 byte arr[]; | |
15 int pos; | |
16 | |
17 public TypesWriter() { | |
18 arr = new byte[256]; | |
19 pos = 0; | |
20 } | |
21 | |
22 private void resize(int len) { | |
23 byte new_arr[] = new byte[len]; | |
24 System.arraycopy(arr, 0, new_arr, 0, arr.length); | |
25 arr = new_arr; | |
26 } | |
27 | |
28 public int length() { | |
29 return pos; | |
30 } | |
31 | |
32 public byte[] getBytes() { | |
33 byte[] dst = new byte[pos]; | |
34 System.arraycopy(arr, 0, dst, 0, pos); | |
35 return dst; | |
36 } | |
37 | |
38 public void getBytes(byte dst[]) { | |
39 System.arraycopy(arr, 0, dst, 0, pos); | |
40 } | |
41 | |
42 public void writeUINT32(int val, int off) { | |
43 if ((off + 4) > arr.length) | |
44 resize(off + 32); | |
45 | |
46 arr[off++] = (byte)(val >> 24); | |
47 arr[off++] = (byte)(val >> 16); | |
48 arr[off++] = (byte)(val >> 8); | |
49 arr[off++] = (byte) val; | |
50 } | |
51 | |
52 public void writeUINT32(int val) { | |
53 writeUINT32(val, pos); | |
54 pos += 4; | |
55 } | |
56 | |
57 public void writeUINT64(long val) { | |
58 if ((pos + 8) > arr.length) | |
59 resize(arr.length + 32); | |
60 | |
61 arr[pos++] = (byte)(val >> 56); | |
62 arr[pos++] = (byte)(val >> 48); | |
63 arr[pos++] = (byte)(val >> 40); | |
64 arr[pos++] = (byte)(val >> 32); | |
65 arr[pos++] = (byte)(val >> 24); | |
66 arr[pos++] = (byte)(val >> 16); | |
67 arr[pos++] = (byte)(val >> 8); | |
68 arr[pos++] = (byte) val; | |
69 } | |
70 | |
71 public void writeBoolean(boolean v) { | |
72 if ((pos + 1) > arr.length) | |
73 resize(arr.length + 32); | |
74 | |
75 arr[pos++] = v ? (byte) 1 : (byte) 0; | |
76 } | |
77 | |
78 public void writeByte(int v, int off) { | |
79 if ((off + 1) > arr.length) | |
80 resize(off + 32); | |
81 | |
82 arr[off] = (byte) v; | |
83 } | |
84 | |
85 public void writeByte(int v) { | |
86 writeByte(v, pos); | |
87 pos++; | |
88 } | |
89 | |
90 public void writeMPInt(BigInteger b) { | |
91 byte raw[] = b.toByteArray(); | |
92 | |
93 if ((raw.length == 1) && (raw[0] == 0)) | |
94 writeUINT32(0); /* String with zero bytes of data */ | |
95 else | |
96 writeString(raw, 0, raw.length); | |
97 } | |
98 | |
99 public void writeBytes(byte[] buff) { | |
100 writeBytes(buff, 0, buff.length); | |
101 } | |
102 | |
103 public void writeBytes(byte[] buff, int off, int len) { | |
104 if ((pos + len) > arr.length) | |
105 resize(arr.length + len + 32); | |
106 | |
107 System.arraycopy(buff, off, arr, pos, len); | |
108 pos += len; | |
109 } | |
110 | |
111 public void writeString(byte[] buff, int off, int len) { | |
112 writeUINT32(len); | |
113 writeBytes(buff, off, len); | |
114 } | |
115 | |
116 public void writeString(String v) { | |
117 byte[] b; | |
118 | |
119 try { | |
120 /* All Java JVMs must support ISO-8859-1 */ | |
121 b = v.getBytes("ISO-8859-1"); | |
122 } | |
123 catch (UnsupportedEncodingException ignore) { | |
124 b = v.getBytes(); | |
125 } | |
126 | |
127 writeUINT32(b.length); | |
128 writeBytes(b, 0, b.length); | |
129 } | |
130 | |
131 public void writeString(String v, String charsetName) throws UnsupportedEncodingException { | |
132 byte[] b = (charsetName == null) ? v.getBytes() : v.getBytes(charsetName); | |
133 writeUINT32(b.length); | |
134 writeBytes(b, 0, b.length); | |
135 } | |
136 | |
137 public void writeNameList(String v[]) { | |
138 StringBuffer sb = new StringBuffer(); | |
139 | |
140 for (int i = 0; i < v.length; i++) { | |
141 if (i > 0) | |
142 sb.append(','); | |
143 | |
144 sb.append(v[i]); | |
145 } | |
146 | |
147 writeString(sb.toString()); | |
148 } | |
149 } |