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package com.koushikdutta.async.http.body;
import com.koushikdutta.async.ByteBufferList;
import com.koushikdutta.async.DataEmitter;
import com.koushikdutta.async.DataSink;
import com.koushikdutta.async.LineEmitter;
import com.koushikdutta.async.LineEmitter.StringCallback;
import com.koushikdutta.async.callback.CompletedCallback;
import com.koushikdutta.async.callback.ContinuationCallback;
import com.koushikdutta.async.callback.DataCallback;
import com.koushikdutta.async.future.Continuation;
import com.koushikdutta.async.http.AsyncHttpRequest;
import com.koushikdutta.async.http.Headers;
import com.koushikdutta.async.http.Multimap;
import com.koushikdutta.async.http.server.BoundaryEmitter;
import java.io.File;
import java.util.ArrayList;
import java.util.UUID;
public class MultipartFormDataBody extends BoundaryEmitter implements AsyncHttpRequestBody<Multimap> {
LineEmitter liner;
Headers formData;
ByteBufferList last;
String lastName;
public interface MultipartCallback {
public void onPart(Part part);
}
@Override
public void parse(DataEmitter emitter, final CompletedCallback completed) {
setDataEmitter(emitter);
setEndCallback(completed);
}
void handleLast() {
if (last == null)
return;
if (formData == null)
formData = new Headers();
formData.add(lastName, last.peekString());
lastName = null;
last = null;
}
public String getField(String name) {
if (formData == null)
return null;
return formData.get(name);
}
@Override
protected void onBoundaryEnd() {
super.onBoundaryEnd();
handleLast();
}
@Override
protected void onBoundaryStart() {
final Headers headers = new Headers();
liner = new LineEmitter();
liner.setLineCallback(new StringCallback() {
@Override
public void onStringAvailable(String s) {
if (!"\r".equals(s)){
headers.addLine(s);
}
else {
handleLast();
liner = null;
setDataCallback(null);
Part part = new Part(headers);
if (mCallback != null)
mCallback.onPart(part);
if (getDataCallback() == null) {
if (part.isFile()) {
setDataCallback(new NullDataCallback());
return;
}
lastName = part.getName();
last = new ByteBufferList();
setDataCallback(new DataCallback() {
@Override
public void onDataAvailable(DataEmitter emitter, ByteBufferList bb) {
bb.get(last);
}
});
}
}
}
});
setDataCallback(liner);
}
public static final String CONTENT_TYPE = "multipart/form-data";
String contentType = CONTENT_TYPE;
public MultipartFormDataBody(String[] values) {
for (String value: values) {
String[] splits = value.split("=");
if (splits.length != 2)
continue;
if (!"boundary".equals(splits[0]))
continue;
setBoundary(splits[1]);
return;
}
report(new Exception ("No boundary found for multipart/form-data"));
}
MultipartCallback mCallback;
public void setMultipartCallback(MultipartCallback callback) {
mCallback = callback;
}
public MultipartCallback getMultipartCallback() {
return mCallback;
}
int written;
@Override
public void write(AsyncHttpRequest request, final DataSink sink, final CompletedCallback completed) {
if (mParts == null)
return;
Continuation c = new Continuation(new CompletedCallback() {
@Override
public void onCompleted(Exception ex) {
completed.onCompleted(ex);
// if (ex == null)
// sink.end();
// else
// sink.close();
}
});
for (final Part part: mParts) {
c.add(new ContinuationCallback() {
@Override
public void onContinue(Continuation continuation, CompletedCallback next) throws Exception {
byte[] bytes = part.getRawHeaders().toPrefixString(getBoundaryStart()).getBytes();
com.koushikdutta.async.Util.writeAll(sink, bytes, next);
written += bytes.length;
}
})
.add(new ContinuationCallback() {
@Override
public void onContinue(Continuation continuation, CompletedCallback next) throws Exception {
long partLength = part.length();
if (partLength >= 0)
written += partLength;
part.write(sink, next);
}
})
.add(new ContinuationCallback() {
@Override
public void onContinue(Continuation continuation, CompletedCallback next) throws Exception {
byte[] bytes = "\r\n".getBytes();
com.koushikdutta.async.Util.writeAll(sink, bytes, next);
written += bytes.length;
}
});
}
c.add(new ContinuationCallback() {
@Override
public void onContinue(Continuation continuation, CompletedCallback next) throws Exception {
byte[] bytes = (getBoundaryEnd()).getBytes();
com.koushikdutta.async.Util.writeAll(sink, bytes, next);
written += bytes.length;
assert written == totalToWrite;
}
});
c.start();
}
@Override
public String getContentType() {
if (getBoundary() == null) {
setBoundary("----------------------------" + UUID.randomUUID().toString().replace("-", ""));
}
return CONTENT_TYPE + "; boundary=" + getBoundary();
}
@Override
public boolean readFullyOnRequest() {
return false;
}
int totalToWrite;
@Override
public int length() {
if (getBoundary() == null) {
setBoundary("----------------------------" + UUID.randomUUID().toString().replace("-", ""));
}
int length = 0;
for (final Part part: mParts) {
String partHeader = part.getRawHeaders().toPrefixString(getBoundaryStart());
if (part.length() == -1)
return -1;
length += part.length() + partHeader.getBytes().length + "\r\n".length();
}
length += (getBoundaryEnd()).getBytes().length;
return totalToWrite = length;
}
public MultipartFormDataBody() {
}
public void setContentType(String contentType) {
this.contentType = contentType;
}
public void addFilePart(String name, File file) {
addPart(new FilePart(name, file));
}
public void addStringPart(String name, String value) {
addPart(new StringPart(name, value));
}
private ArrayList<Part> mParts;
public void addPart(Part part) {
if (mParts == null)
mParts = new ArrayList<Part>();
mParts.add(part);
}
@Override
public Multimap get() {
return new Multimap(formData.getMultiMap());
}
}
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