com.antstreaming.rtsp.protocol.SafeProperties Maven / Gradle / Ivy
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Ant Media Server supports RTMP, RTSP, MP4, HLS, WebRTC, Adaptive Streaming, etc.
package com.antstreaming.rtsp.protocol;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import java.util.Properties;
public class SafeProperties extends Properties {
private static final long serialVersionUID = 5011694856722313621L;
private static final String keyValueSeparators = "=:\t\r\n\f"; /* 键值分隔符 */
private static final String strictKeyValueSeparators = "=:"; /* 属性分隔符 */
private static final String whiteSpaceChars = "\t\r\n\f"; /* 空白字符 */
private static final String RtspLineSeparator = "\r\n"; /* RTSP行分隔符 */
private PropertiesContext context = new PropertiesContext(); /* 属性上下文 */
// private static final String specialSaveChars = "\t\r\n\f#!";
public PropertiesContext getContext() {
return context;
}
/**
* load property file.
*/
@Override
public synchronized void load(InputStream inStream) throws IOException {
BufferedReader in;
in = new BufferedReader(new InputStreamReader(inStream, "8859_1"));
while (true) {
// Get next line
String line = in.readLine();
// intract property/comment string
String intactLine = line;
if (line == null) return;
if (line.length() > 0) {
// Find start of key
int len = line.length();
int keyStart;
for (keyStart = 0; keyStart < len; keyStart++)
if (whiteSpaceChars.indexOf(line.charAt(keyStart)) == -1) break;
// Blank lines are ignored
if (keyStart == len) continue;
// Continue lines that end in slashes if they are not comments
char firstChar = line.charAt(keyStart);
if ((firstChar != '#') && (firstChar != '!')) {
while (continueLine(line)) {
String nextLine = in.readLine();
intactLine = intactLine + "\n" + nextLine;
if (nextLine == null) nextLine = "";
String loppedLine = line.substring(0, len - 1);
// Advance beyond whitespace on new line
int startIndex;
for (startIndex = 0; startIndex < nextLine.length(); startIndex++)
if (whiteSpaceChars.indexOf(nextLine.charAt(startIndex)) == -1) break;
nextLine = nextLine.substring(startIndex, nextLine.length());
line = new String(loppedLine + nextLine);
len = line.length();
}
// Find separation between key and value
int separatorIndex;
for (separatorIndex = keyStart; separatorIndex < len; separatorIndex++) {
char currentChar = line.charAt(separatorIndex);
if (currentChar == '\\')
separatorIndex++;
else if (keyValueSeparators.indexOf(currentChar) != -1) break;
}
// Skip over whitespace after key if any
int valueIndex;
for (valueIndex = separatorIndex; valueIndex < len; valueIndex++)
if (whiteSpaceChars.indexOf(line.charAt(valueIndex)) == -1) break;
// Skip over one non whitespace key value separators if any
if (valueIndex < len)
if (strictKeyValueSeparators.indexOf(line.charAt(valueIndex)) != -1) valueIndex++;
// Skip over white space after other separators if any
while (valueIndex < len) {
if (whiteSpaceChars.indexOf(line.charAt(valueIndex)) == -1) break;
valueIndex++;
}
String key = line.substring(keyStart, separatorIndex);
String value = (separatorIndex < len) ? line.substring(valueIndex, len) : "";
// Convert then store key and value
key = loadConvert(key);
value = loadConvert(value);
// memorize the property also with the whold string
put(key, value, intactLine);
} else {
// memorize the comment string
context.addCommentLine(intactLine);
}
} else {
// memorize the string even the string is empty
context.addCommentLine(intactLine);
}
}
}
/*
* Converts encoded \uxxxx to unicode chars and changes special saved chars to their original
* forms
*/
private String loadConvert(String theString) {
// char aChar;
// int len = theString.length();
// StringBuffer outBuffer = new StringBuffer(len);
//
// for (int x = 0; x < len;) {
// aChar = theString.charAt(x++);
// if (aChar == '\\') {
// aChar = theString.charAt(x++);
// if (aChar == 'u') {
// // Read the xxxx
// int value = 0;
// for (int i = 0; i < 4; i++) {
// aChar = theString.charAt(x++);
// switch (aChar) {
// case '0':
// case '1':
// case '2':
// case '3':
// case '4':
// case '5':
// case '6':
// case '7':
// case '8':
// case '9':
// value = (value << 4) + aChar - '0';
// break;
// case 'a':
// case 'b':
// case 'c':
// case 'd':
// case 'e':
// case 'f':
// value = (value << 4) + 10 + aChar - 'a';
// break;
// case 'A':
// case 'B':
// case 'C':
// case 'D':
// case 'E':
// case 'F':
// value = (value << 4) + 10 + aChar - 'A';
// break;
// default:
// throw new IllegalArgumentException("Malformed \\uxxxx encoding.");
// }
// }
// outBuffer.append((char) value);
// } else {
// if (aChar == 't')
// outBuffer.append('\t'); /* ibm@7211 */
//
// else if (aChar == 'r')
// outBuffer.append('\r'); /* ibm@7211 */
// else if (aChar == 'n') {
// /*
// * ibm@8897 do not convert a \n to a line.separator
// * because on some platforms line.separator is a String
// * of "\r\n". When a Properties class is saved as a file
// * (store()) and then restored (load()) the restored
// * input MUST be the same as the output (so that
// * Properties.equals() works).
// *
// */
// outBuffer.append('\n'); /* ibm@8897 ibm@7211 */
// } else if (aChar == 'f')
// outBuffer.append('\f'); /* ibm@7211 */
// else
// /* ibm@7211 */
// outBuffer.append(aChar); /* ibm@7211 */
// }
// } else
// outBuffer.append(aChar);
// }
// return outBuffer.toString();
return theString;
}
@Override
@SuppressWarnings("rawtypes")
public synchronized void store(OutputStream out, String header) throws IOException {
BufferedWriter awriter;
awriter = new BufferedWriter(new OutputStreamWriter(out, "8859_1"));
if (header != null) writeln(awriter, "#" + header);
List entrys = context.getCommentOrEntrys();
for (Iterator iter = entrys.iterator(); iter.hasNext();) {
Object obj = iter.next();
if (obj.toString() != null) {
writeln(awriter, obj.toString());
}
}
awriter.flush();
}
/**
*
* @return the string
*/
@SuppressWarnings("rawtypes")
public synchronized String getString() {
StringBuffer sb = new StringBuffer();
List entrys = context.getCommentOrEntrys();
Object obj;
for (Iterator iter = entrys.iterator(); iter.hasNext();) {
obj = iter.next();
if (obj.toString() != null) {
sb.append(obj.toString()).append(RtspLineSeparator);
}
obj = null;
}
return sb.toString();
}
private static void writeln(BufferedWriter bw, String s) throws IOException {
bw.write(s);
bw.newLine();
}
private boolean continueLine(String line) {
int slashCount = 0;
int index = line.length() - 1;
while ((index >= 0) && (line.charAt(index--) == '\\'))
slashCount++;
return (slashCount % 2 == 1);
}
/*
* Converts unicodes to encoded \uxxxx and writes out any of the characters in
* specialSaveChars with a preceding slash
*/
private String saveConvert(String theString, boolean escapeSpace) {
// int len = theString.length();
// StringBuffer outBuffer = new StringBuffer(len * 2);
//
// for (int x = 0; x < len; x++) {
// char aChar = theString.charAt(x);
// switch (aChar) {
// // case ' ':
// // if (x == 0 || escapeSpace)
// // outBuffer.append('\\');
// //
// // outBuffer.append(' ');
// // break;
// case '\\':
// outBuffer.append('\\');
// outBuffer.append('\\');
// break;
// case '\t':
// outBuffer.append('\\');
// outBuffer.append('t');
// break;
// case '\n':
// outBuffer.append('\\');
// outBuffer.append('n');
// break;
// case '\r':
// outBuffer.append('\\');
// outBuffer.append('r');
// break;
// case '\f':
// outBuffer.append('\\');
// outBuffer.append('f');
// break;
// default:
// if ((aChar < 0x0020) || (aChar > 0x007e)) {
// outBuffer.append('\\');
// outBuffer.append('u');
// outBuffer.append(toHex((aChar >> 12) & 0xF));
// outBuffer.append(toHex((aChar >> 8) & 0xF));
// outBuffer.append(toHex((aChar >> 4) & 0xF));
// outBuffer.append(toHex(aChar & 0xF));
// } else {
// if (specialSaveChars.indexOf(aChar) != -1)
// outBuffer.append('\\');
// outBuffer.append(aChar);
// }
// }
// }
return theString;
}
// private static char toHex(int nibble) {
// return hexDigit[(nibble & 0xF)];
// }
// /** A table of hex digits */
// private static final char[] hexDigit = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A',
// 'B', 'C', 'D', 'E',
// 'F' };
@Override
public synchronized Object put(Object key, Object value) {
context.putOrUpdate(key.toString(), value.toString());
return super.put(key, value);
}
public synchronized Object put(Object key, Object value, String line) {
context.putOrUpdate(key.toString(), value.toString(), line);
return super.put(key, value);
}
@Override
public synchronized Object remove(Object key) {
context.remove(key.toString());
return super.remove(key);
}
/**
* Description:属性上下文.
*/
class PropertiesContext {
// 保存属性或注释容器类.
@SuppressWarnings("rawtypes")
private List commentOrEntrys = new ArrayList();
@SuppressWarnings("rawtypes")
public List getCommentOrEntrys() {
return commentOrEntrys;
}
@SuppressWarnings("unchecked")
public void addCommentLine(String line) {
commentOrEntrys.add(line);
}
@SuppressWarnings("unchecked")
public void putOrUpdate(PropertyEntry pe) {
remove(pe.getKey());
commentOrEntrys.add(pe);
}
@SuppressWarnings("unchecked")
public void putOrUpdate(String key, String value, String line) {
PropertyEntry pe = new PropertyEntry(key, value, line);
remove(key);
commentOrEntrys.add(pe);
}
@SuppressWarnings("unchecked")
public void putOrUpdate(String key, String value) {
PropertyEntry pe = new PropertyEntry(key, value);
remove(key);
commentOrEntrys.add(pe);
}
public void remove(String key) {
for (int i = 0; i < commentOrEntrys.size(); i++) {
Object obj = commentOrEntrys.get(i);
if (obj instanceof PropertyEntry) {
if (obj != null) {
if (key.equals(((PropertyEntry) obj).getKey())) {
commentOrEntrys.remove(obj);
}
}
}
}
}
/**
* @param string
*/
public void addComment(String comment) {
if (comment != null) {
context.addCommentLine("#" + comment);
}
}
class PropertyEntry {
private String key;
private String value;
private String line;
/**
* 构造函数.
*
* @param key
* @param value
*/
public PropertyEntry(String key, String value) {
this.key = key;
this.value = value;
}
/**
* 构造函数.
*
* @param key
* @param value
*/
public PropertyEntry(String key, String value, String line) {
this(key, value);
this.line = line;
}
/* ~~~~~~~~~~~ Setters And Getters ~~~~~~~~~~~~~~~~~~ */
public String getKey() {
return key;
}
public void setKey(String key) {
this.key = key;
}
public String getValue() {
return value;
}
public void setValue(String value) {
this.value = value;
}
public String getLine() {
return line;
}
public void setLine(String line) {
this.line = line;
}
@Override
public String toString() {
if (line != null) {
return line;
}
if (key != null && value != null) {
String k = saveConvert(key, true);
String v = saveConvert(value, false);
return k + ":" + v;
}
return null;
}
}
}
}