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[ELYWEB-180] Elytron web consumes the InputStream when form parameter…
…s are parsed
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205 changes: 205 additions & 0 deletions
205
...java/org/wildfly/elytron/web/undertow/server/servlet/ReplayHttpServletRequestWrapper.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,205 @@ | ||
| /* | ||
| * Copyright 2022 JBoss by Red Hat. | ||
| * | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance with the License. | ||
| * You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, software | ||
| * distributed under the License is distributed on an "AS IS" BASIS, | ||
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| * See the License for the specific language governing permissions and | ||
| * limitations under the License. | ||
| */ | ||
| package org.wildfly.elytron.web.undertow.server.servlet; | ||
|
|
||
| import io.undertow.server.HttpServerExchange; | ||
| import io.undertow.server.handlers.form.FormData; | ||
| import io.undertow.servlet.handlers.ServletRequestContext; | ||
| import io.undertow.servlet.spec.HttpServletRequestImpl; | ||
| import io.undertow.servlet.spec.PartImpl; | ||
| import io.undertow.servlet.spec.ServletContextImpl; | ||
|
|
||
| import java.io.BufferedReader; | ||
| import java.io.IOException; | ||
| import java.io.InputStreamReader; | ||
| import java.util.ArrayList; | ||
| import java.util.Arrays; | ||
| import java.util.Collection; | ||
| import java.util.Collections; | ||
| import java.util.Deque; | ||
| import java.util.Enumeration; | ||
| import java.util.HashMap; | ||
| import java.util.HashSet; | ||
| import java.util.Iterator; | ||
| import java.util.List; | ||
| import java.util.Map; | ||
| import java.util.Set; | ||
|
|
||
| import javax.servlet.ServletException; | ||
| import javax.servlet.ServletInputStream; | ||
| import javax.servlet.http.HttpServletRequest; | ||
| import javax.servlet.http.HttpServletRequestWrapper; | ||
| import javax.servlet.http.Part; | ||
|
|
||
| /** | ||
| * <p>Internal class that wraps the original request and allows the replay | ||
| * of the input stream and parsed form params.</p> | ||
| * | ||
| * @author rmartinc | ||
| */ | ||
| class ReplayHttpServletRequestWrapper extends HttpServletRequestWrapper { | ||
|
|
||
| private final ReplayServletInputStream ris; | ||
| private final FormData formData; | ||
| private List<Part> parts = null; | ||
|
|
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| public ReplayHttpServletRequestWrapper(HttpServletRequest request, FormData formData, byte[] bytes) { | ||
| super(request); | ||
| this.formData = formData; | ||
| ris = new ReplayServletInputStream(bytes); | ||
| } | ||
|
|
||
| @Override | ||
| public ServletInputStream getInputStream() throws IOException { | ||
| return ris; | ||
| } | ||
|
|
||
| @Override | ||
| public BufferedReader getReader() throws IOException { | ||
| return new BufferedReader(new InputStreamReader(ris, getCharacterEncoding())); | ||
| } | ||
|
|
||
| @Override | ||
| public String getParameter(String name) { | ||
| String result = super.getParameter(name); | ||
| if (result == null && formData != null) { | ||
| FormData.FormValue fv = formData.getFirst(name); | ||
| if (fv != null && !fv.isFileItem()) { | ||
| result = fv.getValue(); | ||
| } | ||
| } | ||
| return result; | ||
| } | ||
|
|
||
| @Override | ||
| public String[] getParameterValues(String name) { | ||
| String[] superValues = super.getParameterValues(name); | ||
| List<String> result = superValues != null? new ArrayList<>(Arrays.asList(superValues)) : new ArrayList<>(); | ||
| Deque<FormData.FormValue> formValues = formData != null? formData.get(name) : null; | ||
| if (formValues != null) { | ||
| for (FormData.FormValue fv : formValues) { | ||
| if (!fv.isFileItem()) { | ||
| result.add(fv.getValue()); | ||
| } | ||
| } | ||
| } | ||
| return result.isEmpty()? null : result.toArray(new String[0]); | ||
| } | ||
|
|
||
| @Override | ||
| public Map<String, String[]> getParameterMap() { | ||
| Map<String, String[]> result = new HashMap<>(); | ||
| Map<String, String[]> superMap = super.getParameterMap(); | ||
| if (superMap != null) { | ||
| result.putAll(superMap); | ||
| } | ||
| if (formData != null) { | ||
| for (Iterator<String> iter = formData.iterator(); iter.hasNext(); ) { | ||
| String paramName = iter.next(); | ||
| String[] superValues = result.get(paramName); | ||
| Deque<FormData.FormValue> fvs = formData.get(paramName); | ||
| if (fvs != null) { | ||
| List<String> values = superValues != null? new ArrayList<>(Arrays.asList(superValues)) : new ArrayList<>(); | ||
| values.addAll(getValuesFromForm(fvs)); | ||
| if (!values.isEmpty()) { | ||
| result.put(paramName, values.toArray(new String[0])); | ||
| } | ||
| } | ||
| } | ||
| } | ||
| return Collections.unmodifiableMap(result); | ||
| } | ||
|
|
||
| @Override | ||
| public Enumeration<String> getParameterNames() { | ||
| Enumeration<String> paramNames = super.getParameterNames(); | ||
| Set<String> result = new HashSet<>(); | ||
| while (paramNames.hasMoreElements()) { | ||
| result.add(paramNames.nextElement()); | ||
| } | ||
| if (formData != null) { | ||
| for (Iterator<String> iter = formData.iterator(); iter.hasNext(); ) { | ||
| String name = iter.next(); | ||
| for (FormData.FormValue fv : formData.get(name)) { | ||
| if (!fv.isFileItem()) { | ||
| result.add(name); | ||
| break; | ||
| } | ||
| } | ||
| } | ||
| } | ||
| return Collections.enumeration(result); | ||
| } | ||
|
|
||
| @Override | ||
| public Part getPart(String name) throws IOException, ServletException { | ||
| Part part = super.getPart(name); | ||
| if (part != null) { | ||
| return part; | ||
| } | ||
| if (parts == null) { | ||
| loadParts(); | ||
| } | ||
| for (Part p : parts) { | ||
| if (p.getName().equals(name)) { | ||
| return p; | ||
| } | ||
| } | ||
| return null; | ||
| } | ||
|
|
||
| @Override | ||
| public Collection<Part> getParts() throws IOException, ServletException { | ||
| Collection<Part> superParts = super.getParts(); | ||
| if (superParts != null && !superParts.isEmpty()) { | ||
| return superParts; | ||
| } | ||
| if (parts == null) { | ||
| loadParts(); | ||
| } | ||
| return parts; | ||
| } | ||
|
|
||
| private List<String> getValuesFromForm(Deque<FormData.FormValue> formValues) { | ||
| ArrayList<String> result = new ArrayList<>(); | ||
| for (FormData.FormValue fv : formValues) { | ||
| if (!fv.isFileItem()) { | ||
| result.add(fv.getValue()); | ||
| } | ||
| } | ||
| return result; | ||
| } | ||
|
|
||
| private void loadParts() { | ||
| HttpServletRequestImpl request = (HttpServletRequestImpl) getRequest(); | ||
| HttpServerExchange exchange = request.getExchange(); | ||
| ServletContextImpl servletContext = request.getServletContext(); | ||
| final ServletRequestContext requestContext = exchange.getAttachment(ServletRequestContext.ATTACHMENT_KEY); | ||
| if (parts == null) { | ||
| final List<Part> tmp = new ArrayList<>(); | ||
| if(formData != null) { | ||
| for (final String namedPart : formData) { | ||
| for (FormData.FormValue part : formData.get(namedPart)) { | ||
| tmp.add(new PartImpl(namedPart, part, | ||
| requestContext.getOriginalServletPathMatch().getServletChain().getManagedServlet().getMultipartConfig(), | ||
| servletContext, request)); | ||
| } | ||
| } | ||
| } | ||
| this.parts = tmp; | ||
| } | ||
| } | ||
| } |
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