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Java: implementing multipart message support.

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This closes #265 issue on GitHub.
This commit is contained in:
Max Romanov
2019-08-14 15:24:41 +03:00
parent 8904c87c6b
commit 4bef4256c0
5 changed files with 192 additions and 15 deletions
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151
src/java/nginx/unit/Request.java
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@@ -1,6 +1,8 @@
package nginx.unit;
import java.io.BufferedReader;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.InputStreamReader;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
@@ -14,6 +16,9 @@ import java.lang.StringBuffer;
import java.net.URI;
import java.net.URISyntaxException;
import java.nio.charset.Charset;
import java.nio.charset.StandardCharsets;
import java.text.ParseException;
import java.text.SimpleDateFormat;
@@ -32,6 +37,7 @@ import java.security.Principal;
import javax.servlet.AsyncContext;
import javax.servlet.DispatcherType;
import javax.servlet.MultipartConfigElement;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
@@ -49,11 +55,14 @@ import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpUpgradeHandler;
import javax.servlet.http.Part;
import org.eclipse.jetty.util.IO;
import org.eclipse.jetty.util.MultiMap;
import org.eclipse.jetty.util.UrlEncoded;
import org.eclipse.jetty.util.StringUtil;
import org.eclipse.jetty.server.CookieCutter;
import org.eclipse.jetty.http.MultiPartFormInputStream;
import org.eclipse.jetty.http.HttpFields;
import org.eclipse.jetty.http.MimeTypes;
public class Request implements HttpServletRequest, DynamicPathRequest
@@ -109,6 +118,9 @@ public class Request implements HttpServletRequest, DynamicPathRequest
public static final String BARE = "nginx.unit.request.bare";
private MultiPartFormInputStream multi_parts;
private MultipartConfigElement multipart_config;
public Request(Context ctx, long req_info, long req) {
context = ctx;
req_info_ptr = req_info;
@@ -271,17 +283,64 @@ public class Request implements HttpServletRequest, DynamicPathRequest
@Override
public Part getPart(String name) throws IOException, ServletException
{
log("getPart: " + name);
trace("getPart: " + name);
return null;
if (multi_parts == null) {
parseMultiParts();
}
return multi_parts.getPart(name);
}
@Override
public Collection<Part> getParts() throws IOException, ServletException
{
log("getParts");
trace("getParts");
return Collections.emptyList();
if (multi_parts == null) {
parseMultiParts();
}
return multi_parts.getParts();
}
private boolean checkMultiPart(String content_type)
{
return content_type != null
&& MimeTypes.Type.MULTIPART_FORM_DATA.is(HttpFields.valueParameters(content_type, null));
}
private void parseMultiParts() throws IOException, ServletException, IllegalStateException
{
String content_type = getContentType();
if (!checkMultiPart(content_type)) {
throw new ServletException("Content-Type != multipart/form-data");
}
if (multipart_config == null) {
throw new IllegalStateException("No multipart config for servlet");
}
parseMultiParts(content_type);
}
private void parseMultiParts(String content_type) throws IOException
{
File tmpDir = (File) context.getAttribute(ServletContext.TEMPDIR);
multi_parts = new MultiPartFormInputStream(getInputStream(),
content_type, multipart_config, tmpDir);
}
public void setMultipartConfig(MultipartConfigElement mce)
{
multipart_config = mce;
}
public MultipartConfigElement getMultipartConfig()
{
return multipart_config;
}
@Override
@@ -766,16 +825,84 @@ public class Request implements HttpServletRequest, DynamicPathRequest
UrlEncoded.decodeUtf8To(query, parameters);
}
if (getContentLength() > 0 &&
getMethod().equals("POST") &&
getContentType().startsWith("application/x-www-form-urlencoded"))
{
try {
int content_length = getContentLength();
if (content_length == 0 || !getMethod().equals("POST")) {
return parameters;
}
String content_type = getContentType();
try {
if (content_type.startsWith("application/x-www-form-urlencoded")) {
UrlEncoded.decodeUtf8To(new InputStream(req_info_ptr),
parameters, getContentLength(), -1);
} catch (IOException e) {
log("Unhandled IOException: " + e);
parameters, content_length, -1);
} else if (checkMultiPart(content_type) && multipart_config != null) {
if (multi_parts == null) {
parseMultiParts(content_type);
}
if (multi_parts != null) {
Collection<Part> parts = multi_parts.getParts();
String _charset_ = null;
Part charset_part = multi_parts.getPart("_charset_");
if (charset_part != null) {
try (java.io.InputStream is = charset_part.getInputStream())
{
ByteArrayOutputStream os = new ByteArrayOutputStream();
IO.copy(is, os);
_charset_ = new String(os.toByteArray(),StandardCharsets.UTF_8);
}
}
/*
Select Charset to use for this part. (NOTE: charset behavior is for the part value only and not the part header/field names)
1. Use the part specific charset as provided in that part's Content-Type header; else
2. Use the overall default charset. Determined by:
a. if part name _charset_ exists, use that part's value.
b. if the request.getCharacterEncoding() returns a value, use that.
(note, this can be either from the charset field on the request Content-Type
header, or from a manual call to request.setCharacterEncoding())
c. use utf-8.
*/
Charset def_charset;
if (_charset_ != null) {
def_charset = Charset.forName(_charset_);
} else if (getCharacterEncoding() != null) {
def_charset = Charset.forName(getCharacterEncoding());
} else {
def_charset = StandardCharsets.UTF_8;
}
ByteArrayOutputStream os = null;
for (Part p : parts) {
if (p.getSubmittedFileName() != null) {
continue;
}
// Servlet Spec 3.0 pg 23, parts without filename must be put into params.
String charset = null;
if (p.getContentType() != null) {
charset = MimeTypes.getCharsetFromContentType(p.getContentType());
}
try (java.io.InputStream is = p.getInputStream())
{
if (os == null) {
os = new ByteArrayOutputStream();
}
IO.copy(is, os);
String content = new String(os.toByteArray(), charset == null ? def_charset : Charset.forName(charset));
parameters.add(p.getName(), content);
}
os.reset();
}
}
}
} catch (IOException e) {
log("Unhandled IOException: " + e);
}
return parameters;