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Calling VCard.load from applet throws exception

I’'m getting:

java.security.AccessControlException: access denied (java.lang.reflect.ReflectPermission suppressAccessChecks)

when I call VCard.load() from an applet.

Is there some initialization or workaround to use this?

I’'m using Smack 2.0.0

Thank you in advance for your help.

–Art

Art,

A Java applet is only allowed to open a socket connection back to the server that served up the applet. My guess is that the applet is rejecting the socket connection you’'re trying to make for security reasons and you happen to see this particular VCard error based on how your code is structured. If you search this forum for info about using Smack in an applet, you should find some helpful posts.

Regards,

Matt

Did you sign the applet? The steps are make the example.cert file and then use the jar signer exe. Also you can check to see if this step is necessary if you load your applet outside the browser. The browser is the one who blocks access, not java or smack. Flash is the same way. AWT errors are OS level, so thats even deeper. I just found that one out. Good Luck. Dan

Matt,

Jive Messenger is running on the same server which is hosting the applet.

The applet has no trouble connecting to Jive Messenger, sending message packets, listening to and processing message and presence packets - all when running in a browser. It’'s only when loading a VCard that it encounters this exception. Loading a VCard works fine when testing the same applet outside of a browser.

Thanks,

–Art

I guess this is because in Applets using reflection to access private fields is restricted. I’‘ll try to fix the problem (I saw the exception it in one of the earlier messages), but I’'d appreciate if you post the exception here.

java.security.AccessControlException: access denied (java.lang.reflect.ReflectPermission suppressAccessChecks)

at java.security.AccessControlContext.checkPermission(Unknown Source)

HTH

–Art

Hi Art,

Here is the fixed version of VCard.java. Please let me know if it works for you.

//==================================

/**

  • $RCSfile$

  • $Revision$

  • $Date: 2006-01-18 00:29:16 +0300 (Wed, 18 Jan 2006) $

  • Copyright 2003-2004 Jive Software.
  • All rights reserved. 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.jivesoftware.smackx.packet;

import org.jivesoftware.smack.PacketCollector;

import org.jivesoftware.smack.SmackConfiguration;

import org.jivesoftware.smack.XMPPConnection;

import org.jivesoftware.smack.XMPPException;

import org.jivesoftware.smack.filter.PacketIDFilter;

import org.jivesoftware.smack.packet.IQ;

import org.jivesoftware.smack.packet.Packet;

import org.jivesoftware.smack.packet.PacketExtension;

import org.jivesoftware.smack.packet.XMPPError;

import org.jivesoftware.smack.util.StringUtils;

import java.io.BufferedInputStream;

import java.io.File;

import java.io.FileInputStream;

import java.io.IOException;

import java.net.URL;

import java.security.MessageDigest;

import java.security.NoSuchAlgorithmException;

import java.util.HashMap;

import java.util.Iterator;

import java.util.Map;

/**

  • A VCard class for use with the

  • SMACK jabber library .

  • You should refer to the

  • JEP-54 documentation.

  • Please note that this class is incomplete but it does provide the most commonly found

  • information in vCards. Also remember that VCard transfer is not a standard, and the protocol

  • may change or be replaced.

  • Usage:

  • 
    
  • // To save VCard:

  • VCard vCard = new VCard();

  • vCard.setFirstName(“kir”);

  • vCard.setLastName(“max”);

  • vCard.setEmailHome(“foo@fee.bar”);

  • vCard.setJabberId("jabber@id.org");

  • vCard.setOrganization(“Jetbrains, s.r.o”);

  • vCard.setNickName(“KIR”);

  • vCard.setField(“TITLE”, “Mr”);

  • vCard.setAddressFieldHome(“STREET”, “Some street”);

  • vCard.setAddressFieldWork(“CTRY”, “US”);

  • vCard.setPhoneWork(“FAX”, “3443233”);

  • vCard.save(connection);

  • // To load VCard:

  • VCard vCard = new VCard();

  • vCard.load(conn); // load own VCard

  • vCard.load(conn, “joe@foo.bar”); // load someone’'s VCard

*/

public class VCard extends IQ {

/**

  • Phone types:

  • VOICE?, FAX?, PAGER?, MSG?, CELL?, VIDEO?, BBS?, MODEM?, ISDN?, PCS?, PREF?

*/

private Map homePhones = new HashMap();

private Map workPhones = new HashMap();

/**

  • Address types:

  • POSTAL?, PARCEL?, (DOM | INTL)?, PREF?, POBOX?, EXTADR?, STREET?, LOCALITY?,

  • REGION?, PCODE?, CTRY?

*/

private Map homeAddr = new HashMap();

private Map workAddr = new HashMap();

private String firstName;

private String lastName;

private String middleName;

private String emailHome;

private String emailWork;

private String organization;

private String organizationUnit;

private String avatar;

/**

  • Such as DESC ROLE GEO etc… see JEP-0054

*/

private Map otherSimpleFields = new HashMap();

public VCard() {

}

/**

  • Set generic VCard field.
  • @param field value of field. Possible values: FN, NICKNAME, PHOTO, BDAY, JABBERID, MAILER, TZ,

  • GEO, TITLE, ROLE, LOGO, NOTE, PRODID, REV, SORT-STRING, SOUND, UID, URL, DESC.

*/

public String getField(String field) {

if (“FN”.equals(field)) {

return buildFullName();

}

return (String) otherSimpleFields.get(field);

}

private String buildFullName() {

if (otherSimpleFields.containsKey(“FN”)) {

return otherSimpleFields.get(“FN”).toString().trim();

}

else {

StringBuffer sb = new StringBuffer();

if (firstName != null) {

sb.append(firstName).append(’’ ‘’);

}

if (middleName != null) {

sb.append(middleName).append(’’ ‘’);

}

if (lastName != null) {

sb.append(lastName);

}

return sb.toString().trim();

}

}

/**

  • Set generic VCard field.
  • @param value value of field

  • @param field field to set. See {@link #getField(String)}

  • @see #getField(String)

*/

public void setField(String field, String value) {

otherSimpleFields.put(field, value);

}

public String getFirstName() {

return firstName;

}

public void setFirstName(String firstName) {

this.firstName = firstName;

}

public String getLastName() {

return lastName;

}

public void setLastName(String lastName) {

this.lastName = lastName;

}

public String getMiddleName() {

return middleName;

}

/**

  • Returns the full name of the user, associated with this VCard.

*/

public String getFullName() {

return getField(“FN”);

}

public void setMiddleName(String middleName) {

this.middleName = middleName;

}

public String getNickName() {

return (String) otherSimpleFields.get(“NICKNAME”);

}

public void setNickName(String nickName) {

otherSimpleFields.put(“NICKNAME”, nickName);

}

public String getEmailHome() {

return emailHome;

}

public void setEmailHome(String email) {

this.emailHome = email;

}

public String getEmailWork() {

return emailWork;

}

public void setEmailWork(String emailWork) {

this.emailWork = emailWork;

}

public String getJabberId() {

return (String) otherSimpleFields.get(“JABBERID”);

}

public void setJabberId(String jabberId) {

otherSimpleFields.put(“JABBERID”, jabberId);

}

public String getOrganization() {

return organization;

}

public void setOrganization(String organization) {

this.organization = organization;

}

public String getOrganizationUnit() {

return organizationUnit;

}

public void setOrganizationUnit(String organizationUnit) {

this.organizationUnit = organizationUnit;

}

/**

  • Get home address field
  • @param addrField one of POSTAL, PARCEL, (DOM | INTL), PREF, POBOX, EXTADR, STREET,

  • LOCALITY, REGION, PCODE, CTRY

*/

public String getAddressFieldHome(String addrField) {

return (String) homeAddr.get(addrField);

}

/**

  • Set home address field
  • @param addrField one of POSTAL, PARCEL, (DOM | INTL), PREF, POBOX, EXTADR, STREET,

  • LOCALITY, REGION, PCODE, CTRY

*/

public void setAddressFieldHome(String addrField, String value) {

homeAddr.put(addrField, value);

}

/**

  • Get work address field
  • @param addrField one of POSTAL, PARCEL, (DOM | INTL), PREF, POBOX, EXTADR, STREET,

  • LOCALITY, REGION, PCODE, CTRY

*/

public String getAddressFieldWork(String addrField) {

return (String) workAddr.get(addrField);

}

/**

  • Set work address field
  • @param addrField one of POSTAL, PARCEL, (DOM | INTL), PREF, POBOX, EXTADR, STREET,

  • LOCALITY, REGION, PCODE, CTRY

*/

public void setAddressFieldWork(String addrField, String value) {

workAddr.put(addrField, value);

}

/**

  • Set home phone number
  • @param phoneType one of VOICE, FAX, PAGER, MSG, CELL, VIDEO, BBS, MODEM, ISDN, PCS, PREF

  • @param phoneNum phone number

*/

public void setPhoneHome(String phoneType, String phoneNum) {

homePhones.put(phoneType, phoneNum);

}

/**

  • Get home phone number
  • @param phoneType one of VOICE, FAX, PAGER, MSG, CELL, VIDEO, BBS, MODEM, ISDN, PCS, PREF

*/

public String getPhoneHome(String phoneType) {

return (String) homePhones.get(phoneType);

}

/**

  • Set work phone number
  • @param phoneType one of VOICE, FAX, PAGER, MSG, CELL, VIDEO, BBS, MODEM, ISDN, PCS, PREF

  • @param phoneNum phone number

*/

public void setPhoneWork(String phoneType, String phoneNum) {

workPhones.put(phoneType, phoneNum);

}

/**

  • Get work phone number
  • @param phoneType one of VOICE, FAX, PAGER, MSG, CELL, VIDEO, BBS, MODEM, ISDN, PCS, PREF

*/

public String getPhoneWork(String phoneType) {

return (String) workPhones.get(phoneType);

}

/**

  • Set the avatar for the VCard by specifying the url to the image.
  • @param avatarURL the url to the image(png,jpeg,gif,bmp)

*/

public void setAvatar(URL avatarURL) {

byte[] bytes = new byte[0];

try {

bytes = getBytes(avatarURL);

}

catch (IOException e) {

e.printStackTrace();

}

String encodedImage = StringUtils.encodeBase64(bytes);

avatar = encodedImage;

setField(“PHOTO”, “”);

}

/**

  • Specify the bytes for the avatar to use.
  • @param bytes the bytes of the avatar.

*/

public void setAvatar(byte[] bytes) {

String encodedImage = StringUtils.encodeBase64(bytes);

avatar = encodedImage;

setField(“PHOTO”, “”);

}

/**

  • Set the encoded avatar string. This is used by the provider.
  • @param encodedAvatar the encoded avatar string.

*/

public void setEncodedImage(String encodedAvatar) {

//TODO Move VCard and VCardProvider into a vCard package.

this.avatar = encodedAvatar;

}

/**

  • Return the byte representation of the avatar(if one exists), otherwise returns null if

  • no avatar could be found.

  • Example 1

  • 
    
  • // Load Avatar from VCard

  • byte[] avatarBytes = vCard.getAvatar();

  • // To create an ImageIcon for Swing applications

  • ImageIcon icon = new ImageIcon(avatar);

  • // To create just an image object from the bytes

  • ByteArrayInputStream bais = new ByteArrayInputStream(avatar);

  • try {

  • Image image = ImageIO.read(bais);

  • }

  • catch (IOException e) {

  • e.printStackTrace();

  • }

  • @return byte representation of avatar.

*/

public byte[] getAvatar() {

if (avatar == null) {

return null;

}

if (avatar != null) {

return StringUtils.decodeBase64(avatar);

}

return null;

}

/**

  • Common code for getting the bytes of a url.
  • @param url the url to read.

*/

public static byte[] getBytes(URL url) throws IOException {

final String path = url.getPath();

final File file = new File(path);

if (file.exists()) {

return getFileBytes(file);

}

return null;

}

private static byte[] getFileBytes(File file) throws IOException {

BufferedInputStream bis = new BufferedInputStream(new FileInputStream(file));

int bytes = (int) file.length();

byte[] buffer = new byte[bytes];

int readBytes = bis.read(buffer);

bis.close();

return buffer;

}

/**

  • Returns the SHA-1 Hash of the Avatar image.
  • @return the SHA-1 Hash of the Avatar image.

*/

public String getAvatarHash() {

byte[] bytes = getAvatar();

if (bytes == null) {

return null;

}

MessageDigest digest = null;

try {

digest = MessageDigest.getInstance(“SHA-1”);

}

catch (NoSuchAlgorithmException e) {

e.printStackTrace();

}

digest.update(bytes);

return StringUtils.encodeHex(digest.digest());

}

/**

  • Save this vCard for the user connected by ‘‘connection’’. Connection should be authenticated

  • and not anonymous.

  • NOTE: the method is asynchronous and does not wait for the returned value.

  • @param connection the XMPPConnection to use.

  • @throws XMPPException thrown if there was an issue setting the VCard in the server.

*/

public void save(XMPPConnection connection) throws XMPPException {

checkAuthenticated(connection);

setType(IQ.Type.SET);

setFrom(connection.getUser());

PacketCollector collector = connection.createPacketCollector(new PacketIDFilter(getPacketID()));

connection.sendPacket(this);

Packet response = collector.nextResult(SmackConfiguration.getPacketReplyTimeout());

// Cancel the collector.

collector.cancel();

if (response == null) {

throw new XMPPException(“No response from server on status set.”);

}

if (response.getError() != null) {

throw new XMPPException(response.getError());

}

}

/**

  • Load VCard information for a connected user. Connection should be authenticated

  • and not anonymous.

*/

public void load(XMPPConnection connection) throws XMPPException {

checkAuthenticated(connection);

setFrom(connection.getUser());

doLoad(connection, connection.getUser());

}

/**

  • Load VCard information for a given user. Connection should be authenticated and not anonymous.

*/

public void load(XMPPConnection connection, String user) throws XMPPException {

checkAuthenticated(connection);

setTo(user);

doLoad(connection, user);

}

private void doLoad(XMPPConnection connection, String user) throws XMPPException {

setType(Type.GET);

PacketCollector collector = connection.createPacketCollector(

new PacketIDFilter(getPacketID()));

connection.sendPacket(this);

VCard result = null;

try {

result = (VCard) collector.nextResult(SmackConfiguration.getPacketReplyTimeout());

if (result == null) {

throw new XMPPException(new XMPPError(408, “Timeout getting VCard information”));

}

if (result.getError() != null) {

throw new XMPPException(result.getError());

}

}

catch (ClassCastException e) {

System.out.println("No VCard for " + user);

}

copyFieldsFrom(result);

}

public String getChildElementXML() {

StringBuffer sb = new StringBuffer();

new VCardWriter(sb).write();

return sb.toString();

}

private void copyFieldsFrom(VCard result) {

if (result == null) result = new VCard();

homeAddr = result.homeAddr;

homePhones = result.homePhones;

workAddr = result.workAddr;

workPhones = result.workPhones;

firstName = result.firstName;

lastName = result.lastName;

middleName = result.middleName;

emailHome = result.emailHome;

emailWork = result.emailWork;

organization = result.organization;

organizationUnit = result.organizationUnit;

otherSimpleFields = result.otherSimpleFields;

avatar = result.avatar;

setType(result.getType());

setError(result.getError());

setFrom(result.getFrom());

setTo(result.getTo());

setPacketID(result.getPacketID());

Iterator iterator = result.getExtensions();

while (iterator.hasNext()) {

addExtension((PacketExtension) iterator.next());

}

iterator = result.getPropertyNames();

while(iterator.hasNext()) {

String key = (String) iterator.next();

setProperty(key, result.getProperty(key));

}

}

private void checkAuthenticated(XMPPConnection connection) {

if (connection == null) {

new IllegalArgumentException(“No connection was provided”);

}

if (!connection.isAuthenticated()) {

new IllegalArgumentException(“Connection is not authenticated”);

}

if (connection.isAnonymous()) {

new IllegalArgumentException(“Connection cannot be anonymous”);

}

}

private boolean hasContent() {

//noinspection OverlyComplexBooleanExpression

return hasNameField()

|| hasOrganizationFields()

|| emailHome != null

|| emailWork != null

|| otherSimpleFields.size() > 0

|| homeAddr.size() > 0

|| homePhones.size() > 0

|| workAddr.size() > 0

|| workPhones.size() > 0

;

}

private boolean hasNameField() {

return firstName != null || lastName != null || middleName != null || otherSimpleFields.containsKey(“FN”);

}

private boolean hasOrganizationFields() {

return organization != null || organizationUnit != null;

}

// Used in tests:

public boolean equals(Object o) {

if (this == o) return true;

if (o == null || getClass() != o.getClass()) return false;

final VCard vCard = (VCard) o;

if (emailHome != null ? !emailHome.equals(vCard.emailHome) : vCard.emailHome != null) {

return false;

}

if (emailWork != null ? !emailWork.equals(vCard.emailWork) : vCard.emailWork != null) {

return false;

}

if (firstName != null ? !firstName.equals(vCard.firstName) : vCard.firstName != null) {

return false;

}

if (!homeAddr.equals(vCard.homeAddr)) {

return false;

}

if (!homePhones.equals(vCard.homePhones)) {

return false;

}

if (lastName != null ? !lastName.equals(vCard.lastName) : vCard.lastName != null) {

return false;

}

if (middleName != null ? !middleName.equals(vCard.middleName) : vCard.middleName != null) {

return false;

}

if (organization != null ?

!organization.equals(vCard.organization) : vCard.organization != null) {

return false;

}

if (organizationUnit != null ?

!organizationUnit.equals(vCard.organizationUnit) : vCard.organizationUnit != null) {

return false;

}

if (!otherSimpleFields.equals(vCard.otherSimpleFields)) {

return false;

}

if (!workAddr.equals(vCard.workAddr)) {

return false;

}

if (!workPhones.equals(vCard.workPhones)) {

return false;

}

return true;

}

public int hashCode() {

int result;

result = homePhones.hashCode();

result = 29 * result + workPhones.hashCode();

result = 29 * result + homeAddr.hashCode();

result = 29 * result + workAddr.hashCode();

result = 29 * result + (firstName != null ? firstName.hashCode() : 0);

result = 29 * result + (lastName != null ? lastName.hashCode() : 0);

result = 29 * result + (middleName != null ? middleName.hashCode() : 0);

result = 29 * result + (emailHome != null ? emailHome.hashCode() : 0);

result = 29 * result + (emailWork != null ? emailWork.hashCode() : 0);

result = 29 * result + (organization != null ? organization.hashCode() : 0);

result = 29 * result + (organizationUnit != null ? organizationUnit.hashCode() : 0);

result = 29 * result + otherSimpleFields.hashCode();

return result;

}

public String toString() {

return getChildElementXML();

}

//==============================================================

private class VCardWriter {

private final StringBuffer sb;

VCardWriter(StringBuffer sb) {

this.sb = sb;

}

public void write() {

appendTag(“vCard”, “xmlns”, “vcard-temp”, hasContent(), new ContentBuilder() {

public void addTagContent() {

buildActualContent();

}

});

}

private void buildActualContent() {

if (hasNameField()) {

appendTag(“FN”, getFullName());

appendN();

}

appendOrganization();

appendGenericFields();

appendEmail(emailWork, “WORK”);

appendEmail(emailHome, “HOME”);

appendPhones(workPhones, “WORK”);

appendPhones(homePhones, “HOME”);

appendAddress(workAddr, “WORK”);

appendAddress(homeAddr, “HOME”);

}

private void appendEmail(final String email, final String type) {

if (email != null) {

appendTag(“EMAIL”, true, new ContentBuilder() {

public void addTagContent() {

appendEmptyTag(type);

appendEmptyTag(“INTERNET”);

appendEmptyTag(“PREF”);

appendTag(“USERID”, email);

}

});

}

}

private void appendPhones(Map phones, final String code) {

Iterator it = phones.entrySet().iterator();

while (it.hasNext()) {

final Map.Entry entry = (Map.Entry) it.next();

appendTag(“TEL”, true, new ContentBuilder() {

public void addTagContent() {

appendEmptyTag(entry.getKey());

appendEmptyTag(code);

appendTag(“NUMBER”, (String) entry.getValue());

}

});

}

}

private void appendAddress(final Map addr, final String code) {

if (addr.size() > 0) {

appendTag(“ADR”, true, new ContentBuilder() {

public void addTagContent() {

appendEmptyTag(code);

Iterator it = addr.entrySet().iterator();

while (it.hasNext()) {

final Map.Entry entry = (Map.Entry) it.next();

appendTag((String) entry.getKey(), (String) entry.getValue());

}

}

});

}

}

private void appendEmptyTag(Object tag) {

sb.append(’’<’’).append(tag).append("/>");

}

private void appendGenericFields() {

Iterator it = otherSimpleFields.entrySet().iterator();

while (it.hasNext()) {

Map.Entry entry = (Map.Entry) it.next();

String tag = entry.getKey().toString();

if (“FN”.equals(tag)) continue;

appendTag(tag, (String) entry.getValue());

}

}

private void appendOrganization() {

if (hasOrganizationFields()) {

appendTag(“ORG”, true, new ContentBuilder() {

public void addTagContent() {

appendTag(“ORGNAME”, organization);

appendTag(“ORGUNIT”, organizationUnit);

}

});

}

}

private void appendN() {

appendTag(“N”, true, new ContentBuilder() {

public void addTagContent() {

appendTag(“FAMILY”, lastName);

appendTag(“GIVEN”, firstName);

appendTag(“MIDDLE”, middleName);

}

});

}

private void appendTag(String tag, String attr, String attrValue, boolean hasContent,

ContentBuilder builder) {

sb.append(’’<’’).append(tag);

if (attr != null) {

sb.append(’’ ‘’).append(attr).append(’’=’’).append(’’’’’’).append(attrValue).append(’’’’’’ );

}

if (hasContent) {

sb.append(’’>’’);

builder.addTagContent();

sb.append("</").append(tag).append(">\n");

}

else {

sb.append("/>\n");

}

}

private void appendTag(String tag, boolean hasContent, ContentBuilder builder) {

appendTag(tag, null, null, hasContent, builder);

}

private void appendTag(String tag, final String tagText) {

if (tagText == null) return;

final ContentBuilder contentBuilder = new ContentBuilder() {

public void addTagContent() {

sb.append(tagText.trim());

}

};

appendTag(tag, true, contentBuilder);

}

}

//==============================================================

private interface ContentBuilder {

void addTagContent();

}

//==============================================================

}

/pre

Please take the next night build. The bug is fixed in it.