package gnu.gcj.protocol.http;
import java.net.*;
import java.io.*;
import java.util.Map;
import java.util.Vector;
import java.util.Hashtable;
import java.util.Enumeration;
class Connection extends HttpURLConnection
{
protected Socket sock = null;
private static Hashtable defRequestProperties = new Hashtable();
private Hashtable requestProperties;
private Hashtable hdrHash = new Hashtable();
private Vector hdrVec = new Vector();
private BufferedInputStream bufferedIn;
private static int proxyPort = 80;
private static boolean proxyInUse = false;
private static String proxyHost = null;
static
{
String port = null;
proxyHost = System.getProperty("http.proxyHost");
if (proxyHost != null)
{
proxyInUse = true;
if ((port = System.getProperty("http.proxyPort")) != null)
{
try
{
proxyPort = Integer.parseInt(port);
}
catch (Throwable t)
{
}
}
}
}
public Connection(URL url)
{
super(url);
requestProperties = (Hashtable) defRequestProperties.clone();
}
public static void setDefaultRequestProperty(String key, String value)
{
defRequestProperties.put(key, value);
}
public static String getDefaultRequestProperty(String key)
{
return (String) defRequestProperties.get(key);
}
public void setRequestProperty(String key, String value)
{
if (connected)
throw new IllegalAccessError("Connection already established.");
requestProperties.put(key, value);
}
public String getRequestProperty(String key)
{
if (connected)
throw new IllegalAccessError("Connection already established.");
return (String) requestProperties.get(key);
}
public void connect() throws IOException
{
if (connected)
return;
int port;
if (proxyInUse)
{
port = proxyPort;
sock = new Socket(proxyHost, port);
}
else
{
InetAddress destAddr = InetAddress.getByName(url.getHost());
if ((port = url.getPort()) == -1)
port = 80;
sock = new Socket(destAddr, port);
}
PrintWriter out = new PrintWriter(sock.getOutputStream());
out.print(getRequestMethod() + " " + url.getFile() + " HTTP/1.0\n");
out.print("Host: " + url.getHost() + ":" + port + "\n");
Enumeration reqKeys = requestProperties.keys();
Enumeration reqVals = requestProperties.elements();
while (reqKeys.hasMoreElements())
out.print(reqKeys.nextElement() + ": " + reqVals.nextElement() + "\n");
out.print("\n");
out.flush();
getHttpHeaders();
connected = true;
}
public void disconnect()
{
if (sock != null)
{
try
{
sock.close();
}
catch (IOException ex)
{
; }
sock = null;
}
}
public boolean usingProxy()
{
return proxyInUse;
}
public InputStream getInputStream() throws IOException
{
if (!connected)
connect();
if (!doInput)
throw new ProtocolException("Can't open InputStream if doInput is false");
return bufferedIn;
}
public OutputStream getOutputStream() throws IOException
{
if (!connected)
connect();
if (! doOutput)
throw new
ProtocolException("Can't open OutputStream if doOutput is false");
return sock.getOutputStream();
}
public String getHeaderField(String name)
{
if (!connected)
try
{
connect();
}
catch (IOException x)
{
return null;
}
return (String) hdrHash.get(name.toLowerCase());
}
public Map getHeaderFields()
{
if (!connected)
try
{
connect();
}
catch (IOException x)
{
return null;
}
return hdrHash;
}
public String getHeaderField(int n)
{
if (!connected)
try
{
connect();
}
catch (IOException x)
{
return null;
}
if (n < hdrVec.size())
return getField((String) hdrVec.elementAt(n));
return null;
}
public String getHeaderFieldKey(int n)
{
if (!connected)
try
{
connect();
}
catch (IOException x)
{
return null;
}
if (n < hdrVec.size())
return getKey((String) hdrVec.elementAt(n));
return null;
}
private String getKey(String str)
{
if (str == null)
return null;
int index = str.indexOf(':');
if (index >= 0)
return str.substring(0, index);
else
return null;
}
private String getField(String str)
{
if (str == null)
return null;
int index = str.indexOf(':');
if (index >= 0)
return str.substring(index + 1).trim();
else
return str;
}
private void getHttpHeaders() throws IOException
{
bufferedIn = new BufferedInputStream(sock.getInputStream());
int buflen = 100;
byte[] buf = new byte[buflen];
String line = "";
boolean gotnl = false;
byte[] ch = new byte[1];
ch[0] = (byte) '\n';
while (true)
{
if (ch[0] != '\n')
line = line + '\r' + new String(ch, 0, 1);
int i;
for (i = 0; i < buflen; i++)
{
buf[i] = (byte) bufferedIn.read();
if (buf[i] == -1)
throw new IOException("Malformed HTTP header");
if (buf[i] == '\r')
{
bufferedIn.read(ch, 0, 1);
if (ch[0] == '\n')
gotnl = true;
break;
}
}
line = line + new String(buf, 0, i);
if (gotnl)
{
if (line.length() == 0)
break;
hdrVec.addElement(line);
String key = getKey(line);
if (key != null)
hdrHash.put(key.toLowerCase(), getField(line));
line = "";
ch[0] = (byte) '\n';
gotnl = false;
}
}
}
}