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bug 9697: encode api response values 

status 9697: resolved fixed

Do encoding for ASCII chars only (done to eliminate problems with multiple language support)
To disable encoding, set "encode.api.response" to false
This commit is contained in:
alena 2011-06-10 17:19:59 -07:00
parent f4ad575270
commit ef3ea765bf
7 changed files with 432 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
server/src/com/cloud/api/ApiGsonHelper.java
View File

@ -25,7 +25,8 @@ public class ApiGsonHelper {
static {
s_gBuilder = new GsonBuilder().setDateFormat("yyyy-MM-dd'T'HH:mm:ssZ");
s_gBuilder.setVersion(1.3);
s_gBuilder.registerTypeAdapter(ResponseObject.class, new ResponseObjectTypeAdapter());
s_gBuilder.registerTypeAdapter(ResponseObject.class, new ResponseObjectTypeAdapter());
s_gBuilder.registerTypeAdapter(String.class, new EncodedStringTypeAdapter());
}
public static GsonBuilder getBuilder() {

67
server/src/com/cloud/api/EncodedStringTypeAdapter.java Normal file
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@ -0,0 +1,67 @@
/**
* Copyright (C) 2010 Cloud.com, Inc. All rights reserved.
*
* This software is licensed under the GNU General Public License v3 or later.
*
* It is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
*/
package com.cloud.api;
import java.lang.reflect.Type;
import org.apache.log4j.Logger;
import com.cloud.configuration.Config;
import com.cloud.configuration.dao.ConfigurationDao;
import com.cloud.utils.component.ComponentLocator;
import com.cloud.utils.encoding.URLEncoder;
import com.google.gson.JsonElement;
import com.google.gson.JsonPrimitive;
import com.google.gson.JsonSerializationContext;
import com.google.gson.JsonSerializer;
public class EncodedStringTypeAdapter implements JsonSerializer<String> {
public static final Logger s_logger = Logger.getLogger(EncodedStringTypeAdapter.class.getName());
private static final boolean encodeApiResponse = configure();
private static boolean configure() {
ComponentLocator locator = ComponentLocator.getCurrentLocator();
ConfigurationDao configDao = locator.getDao(ConfigurationDao.class);
if (configDao != null) {
return Boolean.valueOf(configDao.getValue(Config.EncodeApiResponse.key()));
} else {
return true;
}
}
@Override
public JsonElement serialize(String src, Type typeOfResponseObj, JsonSerializationContext ctx) {
return new JsonPrimitive(encodeString(src));
}
private static String encodeString(String value) {
if (!encodeApiResponse) {
return value;
}
try {
return new URLEncoder().encode(value).replaceAll("\\+", "%20");
} catch (Exception e) {
s_logger.warn("Unable to encode: " + value, e);
}
return value;
}
}

38
server/src/com/cloud/api/response/ApiResponseSerializer.java
View File

@ -34,11 +34,28 @@ import com.cloud.api.ApiDBUtils;
import com.cloud.api.ApiGsonHelper;
import com.cloud.api.BaseCmd;
import com.cloud.api.ResponseObject;
import com.cloud.configuration.Config;
import com.cloud.configuration.dao.ConfigurationDao;
import com.cloud.utils.component.ComponentLocator;
import com.cloud.utils.encoding.URLEncoder;
import com.google.gson.Gson;
import com.google.gson.annotations.SerializedName;
public class ApiResponseSerializer {
private static final Logger s_logger = Logger.getLogger(ApiResponseSerializer.class.getName());
private static final boolean encodeApiResponse = configure();
private static boolean configure() {
ComponentLocator locator = ComponentLocator.getCurrentLocator();
ConfigurationDao configDao = locator.getDao(ConfigurationDao.class);
if (configDao != null) {
return Boolean.valueOf(configDao.getValue(Config.EncodeApiResponse.key()));
} else {
return true;
}
}
public static String toSerializedString(ResponseObject result, String responseType) {
if (BaseCmd.RESPONSE_TYPE_JSON.equalsIgnoreCase(responseType)) {
@ -193,7 +210,12 @@ public class ApiResponseSerializer {
} else if (fieldValue instanceof Date) {
sb.append("<" + serializedName.value() + ">" + BaseCmd.getDateString((Date) fieldValue) + "</" + serializedName.value() + ">");
} else {
sb.append("<" + serializedName.value() + ">" + escapeSpecialXmlChars(fieldValue.toString()) + "</" + serializedName.value() + ">");
String resultString = escapeSpecialXmlChars(fieldValue.toString());
if (!(obj instanceof ExceptionResponse)) {
resultString = encodeParam(resultString);
}
sb.append("<" + serializedName.value() + ">" + resultString + "</" + serializedName.value() + ">");
}
}
} catch (IllegalArgumentException e) {
@ -267,6 +289,20 @@ public class ApiResponseSerializer {
resultString.append(singleChar);
}
}
return resultString.toString();
}
private static String encodeParam(String value) {
if (!encodeApiResponse) {
return value;
}
try {
return new URLEncoder().encode(value).replaceAll("\\+", "%20");
} catch (Exception e) {
s_logger.warn("Unable to encode: " + value, e);
}
return value;
}
}

3
server/src/com/cloud/configuration/Config.java
View File

@ -236,7 +236,8 @@ public enum Config {
DirectAgentLoadSize("Advanced", ManagementServer.class, Integer.class, "direct.agent.load.size", "16", "The number of direct agents to load each time", null),
AgentLbEnable("Advanced", ClusterManager.class, Boolean.class, "agent.lb.enabled", "true", "If agent load balancing enabled in cluster setup", null),
SubDomainNetworkAccess("Advanced", NetworkManager.class, Boolean.class, "allow.subdomain.network.access", "true", "Allow subdomains to use networks dedicated to their parent domain(s)", null);
SubDomainNetworkAccess("Advanced", NetworkManager.class, Boolean.class, "allow.subdomain.network.access", "true", "Allow subdomains to use networks dedicated to their parent domain(s)", null),
EncodeApiResponse("Advanced", ManagementServer.class, Boolean.class, "encode.api.response", "true", "Do UTF-8 encoding for the api response, true by default", null);
private final String _category;

2
setup/db/db/schema-226to227.sql
View File

@ -115,3 +115,5 @@ UPDATE vm_instance set vm_type=type;
ALTER TABLE `cloud`.`networks` ADD COLUMN `is_domain_specific` int(1) unsigned NOT NULL DEFAULT 0 COMMENT '1 if network is domain specific, 0 false otherwise';
INSERT INTO configuration (`category`, `instance`, `component`, `name`, `value`, `description`) VALUES ('Advanced', 'DEFAULT', 'NetworkManager', 'allow.subdomain.network.access', 'true', 'Allow subdomains to use networks dedicated to their parent domain(s)');
INSERT INTO configuration (`category`, `instance`, `component`, `name`, `value`, `description`) VALUES ('Advanced', 'DEFAULT', 'management-server', 'encode.api.response', 'true', 'Do UTF-8 encoding for the api response, true by default');

202
utils/LICENSE Normal file
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@ -0,0 +1,202 @@
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120
utils/src/com/cloud/utils/encoding/URLEncoder.java Normal file
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@ -0,0 +1,120 @@
/*
* This file was modified by Cloud.com to omit encoding for non-ascii characters - this functionality is needed by multi-language support
* Line 86 was modified; lines 114-117 were added
*/
/*
* Copyright 2011 Cloud.com.
*
* 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
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*/
package com.cloud.utils.encoding;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.nio.charset.Charset;
import java.nio.charset.CharsetEncoder;
import java.util.BitSet;
/**
*
* This class is very similar to the java.net.URLEncoder class.
*
* Unfortunately, with java.net.URLEncoder there is no way to specify to the
* java.net.URLEncoder which characters should NOT be encoded.
*
* This code was moved from DefaultServlet.java
*
* @author Craig R. McClanahan
* @author Remy Maucherat
*/
public class URLEncoder {
protected static final char[] hexadecimal = { '0', '1', '2', '3',
'4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
static CharsetEncoder asciiEncoder =
Charset.forName("US-ASCII").newEncoder(); // or "ISO-8859-1" for ISO Latin 1
//Array containing the safe characters set.
protected BitSet safeCharacters = new BitSet(256);
public URLEncoder() {
for (char i = 'a'; i <= 'z'; i++) {
addSafeCharacter(i);
}
for (char i = 'A'; i <= 'Z'; i++) {
addSafeCharacter(i);
}
for (char i = '0'; i <= '9'; i++) {
addSafeCharacter(i);
}
}
public void addSafeCharacter(char c) {
safeCharacters.set(c);
}
public String encode(String path) {
int maxBytesPerChar = 10;
StringBuffer rewrittenPath = new StringBuffer(path.length());
ByteArrayOutputStream buf = new ByteArrayOutputStream(
maxBytesPerChar);
OutputStreamWriter writer = null;
try {
writer = new OutputStreamWriter(buf, "UTF8");
} catch (Exception e) {
e.printStackTrace();
writer = new OutputStreamWriter(buf);
}
for (int i = 0; i < path.length(); i++) {
int c = (int) path.charAt(i);
//NOTICE - !isPureAscii(path.charAt(i)) check was added by Cloud.com
if (safeCharacters.get(c) || !isPureAscii(path.charAt(i))) {
rewrittenPath.append((char) c);
} else {
// convert to external encoding before hex conversion
try {
writer.write((char) c);
writer.flush();
} catch (IOException e) {
buf.reset();
continue;
}
byte[] ba = buf.toByteArray();
for (int j = 0; j < ba.length; j++) {
// Converting each byte in the buffer
byte toEncode = ba[j];
rewrittenPath.append('%');
int low = (int) (toEncode & 0x0f);
int high = (int) ((toEncode & 0xf0) >> 4);
rewrittenPath.append(hexadecimal[high]);
rewrittenPath.append(hexadecimal[low]);
}
buf.reset();
}
}
return rewrittenPath.toString();
}
//NOTICE - this part was added by Cloud.com
public static boolean isPureAscii(Character v) {
return asciiEncoder.canEncode(v);
}
}