Many resources are needed to download a project. Please understand that we have to compensate our server costs. Thank you in advance.
Project price only 1 $
You can buy this project and download/modify it how often you want.
com.sun.mail.util.logging.MailHandler Maven / Gradle / Ivy
/*
* Copyright (c) 2009, 2021 Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2009, 2020 Jason Mehrens. All rights reserved.
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v. 2.0, which is available at
* http://www.eclipse.org/legal/epl-2.0.
*
* This Source Code may also be made available under the following Secondary
* Licenses when the conditions for such availability set forth in the
* Eclipse Public License v. 2.0 are satisfied: GNU General Public License,
* version 2 with the GNU Classpath Exception, which is available at
* https://www.gnu.org/software/classpath/license.html.
*
* SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
*/
package com.sun.mail.util.logging;
import static com.sun.mail.util.logging.LogManagerProperties.fromLogManager;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.io.UnsupportedEncodingException;
import java.lang.reflect.InvocationTargetException;
import java.net.InetAddress;
import java.net.URLConnection;
import java.net.UnknownHostException;
import java.nio.charset.Charset;
import java.security.AccessController;
import java.security.PrivilegedAction;
import java.util.Arrays;
import java.util.Comparator;
import java.util.HashMap;
import java.util.Locale;
import java.util.Map;
import java.util.Properties;
import java.util.ResourceBundle;
import java.util.logging.ErrorManager;
import java.util.logging.Filter;
import java.util.logging.Formatter;
import java.util.logging.Handler;
import java.util.logging.Level;
import java.util.logging.LogRecord;
import java.util.logging.SimpleFormatter;
import jakarta.mail.util.ByteArrayDataSource;
import jakarta.activation.DataHandler;
import jakarta.activation.DataSource;
import jakarta.activation.FileTypeMap;
import jakarta.activation.MimetypesFileTypeMap;
import jakarta.mail.Address;
import jakarta.mail.Authenticator;
import jakarta.mail.BodyPart;
import jakarta.mail.Message;
import jakarta.mail.MessageContext;
import jakarta.mail.MessagingException;
import jakarta.mail.Part;
import jakarta.mail.PasswordAuthentication;
import jakarta.mail.SendFailedException;
import jakarta.mail.Service;
import jakarta.mail.Session;
import jakarta.mail.Transport;
import jakarta.mail.internet.AddressException;
import jakarta.mail.internet.ContentType;
import jakarta.mail.internet.InternetAddress;
import jakarta.mail.internet.MimeBodyPart;
import jakarta.mail.internet.MimeMessage;
import jakarta.mail.internet.MimeMultipart;
import jakarta.mail.internet.MimePart;
import jakarta.mail.internet.MimeUtility;
import jakarta.mail.util.StreamProvider.EncoderTypes;
/**
* Handler that formats log records as an email message.
*
*
* This Handler will store a fixed number of log records used to
* generate a single email message. When the internal buffer reaches capacity,
* all log records are formatted and placed in an email which is sent to an
* email server. The code to manually setup this handler can be as simple as
* the following:
*
*
* Properties props = new Properties();
* props.put("mail.smtp.host", "my-mail-server");
* props.put("mail.to", "[email protected] ");
* props.put("verify", "local");
* MailHandler h = new MailHandler(props);
* h.setLevel(Level.WARNING);
*
*
*
* Configuration:
* The LogManager should define at least one or more recipient addresses and a
* mail host for outgoing email. The code to setup this handler via the
* logging properties can be as simple as the following:
*
*
* #Default MailHandler settings.
* com.sun.mail.util.logging.MailHandler.mail.smtp.host = my-mail-server
* com.sun.mail.util.logging.MailHandler.mail.to = [email protected]
* com.sun.mail.util.logging.MailHandler.level = WARNING
* com.sun.mail.util.logging.MailHandler.verify = local
*
*
* For a custom handler, e.g. com.foo.MyHandler, the properties
* would be:
*
*
* #Subclass com.foo.MyHandler settings.
* com.foo.MyHandler.mail.smtp.host = my-mail-server
* com.foo.MyHandler.mail.to = [email protected]
* com.foo.MyHandler.level = WARNING
* com.foo.MyHandler.verify = local
*
*
* All mail properties documented in the Java Mail API cascade to
* the LogManager by prefixing a key using the fully qualified class name of
* this MailHandler or the fully qualified derived class name dot
* mail property. If the prefixed property is not found, then the mail property
* itself is searched in the LogManager. By default each
* MailHandler is initialized using the following LogManager
* configuration properties where <handler-name> refers to
* the fully qualified class name of the handler. If properties are not
* defined, or contain invalid values, then the specified default values are
* used.
*
*
* <handler-name>.attachment.filters a comma
* separated list of Filter class names used to create each
* attachment. The literal null is reserved for attachments that
* do not require filtering. (defaults to the
* {@linkplain java.util.logging.Handler#getFilter() body} filter)
*
* <handler-name>.attachment.formatters a comma
* separated list of Formatter class names used to create each
* attachment. (default is no attachments)
*
* <handler-name>.attachment.names a comma separated
* list of names or Formatter class names of each attachment. All
* control characters are removed from the attachment names.
* (default is {@linkplain java.util.logging.Formatter#toString() toString}
* of the attachment formatter)
*
* <handler-name>.authenticator name of an
* {@linkplain jakarta.mail.Authenticator} class used to provide login credentials
* to the email server or string literal that is the password used with the
* {@linkplain Authenticator#getDefaultUserName() default} user name.
* (default is null)
*
* <handler-name>.capacity the max number of
* LogRecord objects include in each email message.
* (defaults to 1000)
*
* <handler-name>.comparator name of a
* {@linkplain java.util.Comparator} class used to sort the published
* LogRecord objects prior to all formatting.
* (defaults to null meaning records are unsorted).
*
* <handler-name>.comparator.reverse a boolean
* true to reverse the order of the specified comparator or
* false to retain the original order.
* (defaults to false)
*
* <handler-name>.encoding the name of the Java
* {@linkplain java.nio.charset.Charset#name() character set} to use for the
* email message. (defaults to null, the
* {@linkplain jakarta.mail.internet.MimeUtility#getDefaultJavaCharset() default}
* platform encoding).
*
* <handler-name>.errorManager name of an
* ErrorManager class used to handle any configuration or mail
* transport problems. (defaults to java.util.logging.ErrorManager)
*
* <handler-name>.filter name of a Filter
* class used for the body of the message. (defaults to null,
* allow all records)
*
* <handler-name>.formatter name of a
* Formatter class used to format the body of this message.
* (defaults to java.util.logging.SimpleFormatter)
*
* <handler-name>.level specifies the default level
* for this Handler (defaults to Level.WARNING).
*
* <handler-name>.mail.bcc a comma separated list of
* addresses which will be blind carbon copied. Typically, this is set to the
* recipients that may need to be privately notified of a log message or
* notified that a log message was sent to a third party such as a support team.
* The empty string can be used to specify no blind carbon copied address.
* (defaults to null, none)
*
* <handler-name>.mail.cc a comma separated list of
* addresses which will be carbon copied. Typically, this is set to the
* recipients that may need to be notified of a log message but, are not
* required to provide direct support. The empty string can be used to specify
* no carbon copied address. (defaults to null, none)
*
* <handler-name>.mail.from a comma separated list of
* addresses which will be from addresses. Typically, this is set to the email
* address identifying the user running the application. The empty string can
* be used to override the default behavior and specify no from address.
* (defaults to the {@linkplain jakarta.mail.Message#setFrom() local address})
*
* <handler-name>.mail.host the host name or IP
* address of the email server. (defaults to null, use
* {@linkplain Transport#protocolConnect default}
* Java Mail behavior)
*
* <handler-name>.mail.reply.to a comma separated
* list of addresses which will be reply-to addresses. Typically, this is set
* to the recipients that provide support for the application itself. The empty
* string can be used to specify no reply-to address.
* (defaults to null, none)
*
* <handler-name>.mail.to a comma separated list of
* addresses which will be send-to addresses. Typically, this is set to the
* recipients that provide support for the application, system, and/or
* supporting infrastructure. The empty string can be used to specify no
* send-to address which overrides the default behavior. (defaults to
* {@linkplain jakarta.mail.internet.InternetAddress#getLocalAddress
* local address}.)
*
* <handler-name>.mail.sender a single address
* identifying sender of the email; never equal to the from address. Typically,
* this is set to the email address identifying the application itself. The
* empty string can be used to specify no sender address.
* (defaults to null, none)
*
* <handler-name>.subject the name of a
* Formatter class or string literal used to create the subject
* line. The empty string can be used to specify no subject. All control
* characters are removed from the subject line. (defaults to {@linkplain
* com.sun.mail.util.logging.CollectorFormatter CollectorFormatter}.)
*
* <handler-name>.pushFilter the name of a
* Filter class used to trigger an early push.
* (defaults to null, no early push)
*
* <handler-name>.pushLevel the level which will
* trigger an early push. (defaults to Level.OFF, only push when
* full)
*
* <handler-name>.verify used to
* verify the Handler configuration prior to a push.
*
* If the value is not set, equal to an empty string, or equal to the
* literal null then no settings are verified prior to a push.
* If set to a value of limited then the
* Handler will verify minimal local machine settings.
* If set to a value of local the Handler
* will verify all of settings of the local machine.
* If set to a value of resolve, the Handler
* will verify all local settings and try to resolve the remote host name
* with the domain name server.
* If set to a value of login, the Handler
* will verify all local settings and try to establish a connection with
* the email server.
* If set to a value of remote, the Handler
* will verify all local settings, try to establish a connection with the
* email server, and try to verify the envelope of the email message.
*
* If this Handler is only implicitly closed by the
* LogManager, then verification should be turned on.
* (defaults to null, no verify).
*
*
*
* Normalization:
* The error manager, filters, and formatters when loaded from the LogManager
* are converted into canonical form inside the MailHandler. The pool of
* interned values is limited to each MailHandler object such that no two
* MailHandler objects created by the LogManager will be created sharing
* identical error managers, filters, or formatters. If a filter or formatter
* should not be interned then it is recommended to retain the identity
* equals and identity hashCode methods as the implementation. For a filter or
* formatter to be interned the class must implement the
* {@linkplain java.lang.Object#equals(java.lang.Object) equals}
* and {@linkplain java.lang.Object#hashCode() hashCode} methods.
* The recommended code to use for stateless filters and formatters is:
*
* public boolean equals(Object obj) {
* return obj == null ? false : obj.getClass() == getClass();
* }
*
* public int hashCode() {
* return 31 * getClass().hashCode();
* }
*
*
*
* Sorting:
* All LogRecord objects are ordered prior to formatting if this
* Handler has a non null comparator. Developers might be
* interested in sorting the formatted email by thread id, time, and sequence
* properties of a LogRecord. Where as system administrators might
* be interested in sorting the formatted email by thrown, level, time, and
* sequence properties of a LogRecord. If comparator for this
* handler is null then the order is unspecified.
*
*
* Formatting:
* The main message body is formatted using the Formatter returned
* by getFormatter(). Only records that pass the filter returned
* by getFilter() will be included in the message body. The
* subject Formatter will see all LogRecord objects
* that were published regardless of the current Filter. The MIME
* type of the message body can be
* {@linkplain FileTypeMap#setDefaultFileTypeMap overridden}
* by adding a MIME {@linkplain MimetypesFileTypeMap entry} using the simple
* class name of the body formatter as the file extension. The MIME type of the
* attachments can be overridden by changing the attachment file name extension
* or by editing the default MIME entry for a specific file name extension.
*
*
* Attachments:
* This Handler allows multiple attachments per each email message.
* The presence of an attachment formatter will change the content type of the
* email message to a multi-part message. The attachment order maps directly to
* the array index order in this Handler with zero index being the
* first attachment. The number of attachment formatters controls the number of
* attachments per email and the content type of each attachment. The
* attachment filters determine if a LogRecord will be included in
* an attachment. If an attachment filter is null then all records
* are included for that attachment. Attachments without content will be
* omitted from email message. The attachment name formatters create the file
* name for an attachment. Custom attachment name formatters can be used to
* generate an attachment name based on the contents of the attachment.
*
*
* Push Level and Push Filter:
* The push method, push level, and optional push filter can be used to
* conditionally trigger a push at or prior to full capacity. When a push
* occurs, the current buffer is formatted into an email and is sent to the
* email server. If the push method, push level, or push filter trigger a push
* then the outgoing email is flagged as high importance with urgent priority.
*
*
* Buffering:
* Log records that are published are stored in an internal buffer. When this
* buffer reaches capacity the existing records are formatted and sent in an
* email. Any published records can be sent before reaching capacity by
* explictly calling the flush, push, or
* close methods. If a circular buffer is required then this
* handler can be wrapped with a {@linkplain java.util.logging.MemoryHandler}
* typically with an equivalent capacity, level, and push level.
*
*
* Error Handling:
* If the transport of an email message fails, the email is converted to
* a {@linkplain jakarta.mail.internet.MimeMessage#writeTo raw}
* {@linkplain java.io.ByteArrayOutputStream#toString(java.lang.String) string}
* and is then passed as the msg parameter to
* {@linkplain Handler#reportError reportError} along with the exception
* describing the cause of the failure. This allows custom error managers to
* store, {@linkplain jakarta.mail.internet.MimeMessage#MimeMessage(
* jakarta.mail.Session, java.io.InputStream) reconstruct}, and resend the
* original MimeMessage. The message parameter string is not a raw email
* if it starts with value returned from Level.SEVERE.getName().
* Custom error managers can use the following test to determine if the
* msg parameter from this handler is a raw email:
*
*
* public void error(String msg, Exception ex, int code) {
* if (msg == null || msg.length() == 0 || msg.startsWith(Level.SEVERE.getName())) {
* super.error(msg, ex, code);
* } else {
* //The 'msg' parameter is a raw email.
* }
* }
*
*
* @author Jason Mehrens
* @since JavaMail 1.4.3
*/
public class MailHandler extends Handler {
/**
* Use the emptyFilterArray method.
*/
private static final Filter[] EMPTY_FILTERS = new Filter[0];
/**
* Use the emptyFormatterArray method.
*/
private static final Formatter[] EMPTY_FORMATTERS = new Formatter[0];
/**
* Min byte size for header data. Used for initial arrays sizing.
*/
private static final int MIN_HEADER_SIZE = 1024;
/**
* Cache the off value.
*/
private static final int offValue = Level.OFF.intValue();
/**
* The action to set the context class loader for use with the Jakarta Mail API.
* Load and pin this before it is loaded in the close method. The field is
* declared as java.security.PrivilegedAction so
* WebappClassLoader.clearReferencesStaticFinal() method will ignore this
* field.
*/
private static final PrivilegedAction MAILHANDLER_LOADER
= new GetAndSetContext(MailHandler.class);
/**
* A thread local mutex used to prevent logging loops. This code has to be
* prepared to deal with unexpected null values since the
* WebappClassLoader.clearReferencesThreadLocals() and
* InnocuousThread.eraseThreadLocals() can remove thread local values.
* The MUTEX has 5 states:
* 1. A null value meaning default state of not publishing.
* 2. MUTEX_PUBLISH on first entry of a push or publish.
* 3. The index of the first filter to accept a log record.
* 4. MUTEX_REPORT when cycle of records is detected.
* 5. MUTEXT_LINKAGE when a linkage error is reported.
*/
private static final ThreadLocal MUTEX = new ThreadLocal<>();
/**
* The marker object used to report a publishing state.
* This must be less than the body filter index (-1).
*/
private static final Integer MUTEX_PUBLISH = -2;
/**
* The used for the error reporting state.
* This must be less than the PUBLISH state.
*/
private static final Integer MUTEX_REPORT = -4;
/**
* The used for linkage error reporting.
* This must be less than the REPORT state.
*/
private static final Integer MUTEX_LINKAGE = -8;
/**
* Used to turn off security checks.
*/
private volatile boolean sealed;
/**
* Determines if we are inside of a push.
* Makes the handler properties read-only during a push.
*/
private boolean isWriting;
/**
* Holds all of the email server properties.
*/
private Properties mailProps;
/**
* Holds the authenticator required to login to the email server.
*/
private Authenticator auth;
/**
* Holds the session object used to generate emails.
* Sessions can be shared by multiple threads.
* See JDK-6228391 and K 6278.
*/
private Session session;
/**
* A mapping of log record to matching filter index. Negative one is used
* to track the body filter. Zero and greater is used to track the
* attachment parts. All indexes less than or equal to the matched value
* have already seen the given log record.
*/
private int[] matched;
/**
* Holds all of the log records that will be used to create the email.
*/
private LogRecord[] data;
/**
* The number of log records in the buffer.
*/
private int size;
/**
* The maximum number of log records to format per email.
* Used to roughly bound the size of an email.
* Every time the capacity is reached, the handler will push.
* The capacity will be negative if this handler is closed.
* Negative values are used to ensure all records are pushed.
*/
private int capacity;
/**
* Used to order all log records prior to formatting. The main email body
* and all attachments use the order determined by this comparator. If no
* comparator is present the log records will be in no specified order.
*/
private Comparator comparator;
/**
* Holds the formatter used to create the subject line of the email.
* A subject formatter is not required for the email message.
* All published records pass through the subject formatter.
*/
private Formatter subjectFormatter;
/**
* Holds the push level for this handler.
* This is only required if an email must be sent prior to shutdown
* or before the buffer is full.
*/
private Level pushLevel;
/**
* Holds the push filter for trigger conditions requiring an early push.
* Only gets called if the given log record is greater than or equal
* to the push level and the push level is not Level.OFF.
*/
private Filter pushFilter;
/**
* Holds the entry and body filter for this handler.
* There is no way to un-seal the super handler.
*/
private volatile Filter filter;
/**
* Holds the level for this handler.
* There is no way to un-seal the super handler.
*/
private volatile Level logLevel = Level.ALL;
/**
* Holds the filters for each attachment. Filters are optional for
* each attachment. This is declared volatile because this is treated as
* copy-on-write. The VO_VOLATILE_REFERENCE_TO_ARRAY warning is a false
* positive.
*/
@SuppressWarnings("VolatileArrayField")
private volatile Filter[] attachmentFilters;
/**
* Holds the encoding name for this handler.
* There is no way to un-seal the super handler.
*/
private String encoding;
/**
* Holds the entry and body filter for this handler.
* There is no way to un-seal the super handler.
*/
private Formatter formatter;
/**
* Holds the formatters that create the content for each attachment.
* Each formatter maps directly to an attachment. The formatters
* getHead, format, and getTail methods are only called if one or more
* log records pass through the attachment filters.
*/
private Formatter[] attachmentFormatters;
/**
* Holds the formatters that create the file name for each attachment.
* Each formatter must produce a non null and non empty name.
* The final file name will be the concatenation of one getHead call, plus
* all of the format calls, plus one getTail call.
*/
private Formatter[] attachmentNames;
/**
* Used to override the content type for the body and set the content type
* for each attachment.
*/
private FileTypeMap contentTypes;
/**
* Holds the error manager for this handler.
* There is no way to un-seal the super handler.
*/
private volatile ErrorManager errorManager = defaultErrorManager();
/**
* Creates a MailHandler that is configured by the
* LogManager configuration properties.
* @throws SecurityException if a security manager exists and the
* caller does not have LoggingPermission("control").
*/
public MailHandler() {
init((Properties) null);
sealed = true;
checkAccess();
}
/**
* Creates a MailHandler that is configured by the
* LogManager configuration properties but overrides the
* LogManager capacity with the given capacity.
* @param capacity of the internal buffer.
* @throws IllegalArgumentException if capacity less than one.
* @throws SecurityException if a security manager exists and the
* caller does not have LoggingPermission("control").
*/
public MailHandler(final int capacity) {
init((Properties) null);
sealed = true;
setCapacity0(capacity);
}
/**
* Creates a mail handler with the given mail properties.
* The key/value pairs are defined in the Java Mail API
* documentation. This Handler will also search the
* LogManager for defaults if needed.
* @param props a non null properties object.
* @throws NullPointerException if props is null.
* @throws SecurityException if a security manager exists and the
* caller does not have LoggingPermission("control").
*/
public MailHandler(final Properties props) {
if (props == null) {
throw new NullPointerException();
}
init(props);
sealed = true;
setMailProperties0(props);
}
/**
* Check if this Handler would actually log a given
* LogRecord into its internal buffer.
*
* This method checks if the LogRecord has an appropriate level
* and whether it satisfies any Filter including any
* attachment filters.
* However it does not check whether the LogRecord would
* result in a "push" of the buffer contents.
*
* @param record a LogRecord or null.
* @return true if the LogRecord would be logged.
*/
@Override
public boolean isLoggable(final LogRecord record) {
if (record == null) { //JDK-8233979
return false;
}
int levelValue = getLevel().intValue();
if (record.getLevel().intValue() < levelValue || levelValue == offValue) {
return false;
}
Filter body = getFilter();
if (body == null || body.isLoggable(record)) {
setMatchedPart(-1);
return true;
}
return isAttachmentLoggable(record);
}
/**
* Stores a LogRecord in the internal buffer.
*
* The isLoggable method is called to check if the given log
* record is loggable. If the given record is loggable, it is copied into
* an internal buffer. Then the record's level property is compared with
* the push level. If the given level of the LogRecord
* is greater than or equal to the push level then the push filter is
* called. If no push filter exists, the push filter returns true,
* or the capacity of the internal buffer has been reached then all buffered
* records are formatted into one email and sent to the server.
*
* @param record description of the log event or null.
*/
@Override
public void publish(final LogRecord record) {
/**
* It is possible for the handler to be closed after the
* call to isLoggable. In that case, the current thread
* will push to ensure that all published records are sent.
* See close().
*/
if (tryMutex()) {
try {
if (isLoggable(record)) {
if (record != null) {
record.getSourceMethodName(); //Infer caller.
publish0(record);
} else { //Override of isLoggable is broken.
reportNullError(ErrorManager.WRITE_FAILURE);
}
}
} catch (final LinkageError JDK8152515) {
reportLinkageError(JDK8152515, ErrorManager.WRITE_FAILURE);
} finally {
releaseMutex();
}
} else {
reportUnPublishedError(record);
}
}
/**
* Performs the publish after the record has been filtered.
* @param record the record which must not be null.
* @since JavaMail 1.4.5
*/
private void publish0(final LogRecord record) {
Message msg;
boolean priority;
synchronized (this) {
if (size == data.length && size < capacity) {
grow();
}
if (size < data.length) {
//assert data.length == matched.length;
matched[size] = getMatchedPart();
data[size] = record;
++size; //Be nice to client compiler.
priority = isPushable(record);
if (priority || size >= capacity) {
msg = writeLogRecords(ErrorManager.WRITE_FAILURE);
} else {
msg = null;
}
} else {
priority = false;
msg = null;
}
}
if (msg != null) {
send(msg, priority, ErrorManager.WRITE_FAILURE);
}
}
/**
* Report to the error manager that a logging loop was detected and
* we are going to break the cycle of messages. It is possible that
* a custom error manager could continue the cycle in which case
* we will stop trying to report errors.
* @param record the record or null.
* @since JavaMail 1.4.6
*/
private void reportUnPublishedError(LogRecord record) {
final Integer idx = MUTEX.get();
if (idx == null || idx > MUTEX_REPORT) {
MUTEX.set(MUTEX_REPORT);
try {
final String msg;
if (record != null) {
final Formatter f = createSimpleFormatter();
msg = "Log record " + record.getSequenceNumber()
+ " was not published. "
+ head(f) + format(f, record) + tail(f, "");
} else {
msg = null;
}
Exception e = new IllegalStateException(
"Recursive publish detected by thread "
+ Thread.currentThread());
reportError(msg, e, ErrorManager.WRITE_FAILURE);
} finally {
if (idx != null) {
MUTEX.set(idx);
} else {
MUTEX.remove();
}
}
}
}
/**
* Used to detect reentrance by the current thread to the publish method.
* This mutex is thread local scope and will not block other threads.
* The state is advanced on if the current thread is in a reset state.
* @return true if the mutex was acquired.
* @since JavaMail 1.4.6
*/
private boolean tryMutex() {
if (MUTEX.get() == null) {
MUTEX.set(MUTEX_PUBLISH);
return true;
} else {
return false;
}
}
/**
* Releases the mutex held by the current thread.
* This mutex is thread local scope and will not block other threads.
* @since JavaMail 1.4.6
*/
private void releaseMutex() {
MUTEX.remove();
}
/**
* This is used to get the filter index from when {@code isLoggable} and
* {@code isAttachmentLoggable} was invoked by {@code publish} method.
*
* @return the filter index or MUTEX_PUBLISH if unknown.
* @since JavaMail 1.5.5
* @throws NullPointerException if tryMutex was not called.
*/
private int getMatchedPart() {
//assert Thread.holdsLock(this);
Integer idx = MUTEX.get();
if (idx == null || idx >= readOnlyAttachmentFilters().length) {
idx = MUTEX_PUBLISH;
}
return idx;
}
/**
* This is used to record the filter index when {@code isLoggable} and
* {@code isAttachmentLoggable} was invoked by {@code publish} method.
*
* @param index the filter index.
* @since JavaMail 1.5.5
*/
private void setMatchedPart(int index) {
if (MUTEX_PUBLISH.equals(MUTEX.get())) {
MUTEX.set(index);
}
}
/**
* Clear previous matches when the filters are modified and there are
* existing log records that were matched.
* @param index the lowest filter index to clear.
* @since JavaMail 1.5.5
*/
private void clearMatches(int index) {
assert Thread.holdsLock(this);
for (int r = 0; r < size; ++r) {
if (matched[r] >= index) {
matched[r] = MUTEX_PUBLISH;
}
}
}
/**
* A callback method for when this object is about to be placed into
* commission. This contract is defined by the
* {@code org.glassfish.hk2.api.PostConstruct} interface. If this class is
* loaded via a lifecycle managed environment other than HK2 then it is
* recommended that this method is called either directly or through
* extending this class to signal that this object is ready for use.
*
* @since JavaMail 1.5.3
*/
//@javax.annotation.PostConstruct
public void postConstruct() {
}
/**
* A callback method for when this object is about to be decommissioned.
* This contract is defined by the {@code org.glassfish.hk2.api.PreDestory}
* interface. If this class is loaded via a lifecycle managed environment
* other than HK2 then it is recommended that this method is called either
* directly or through extending this class to signal that this object will
* be destroyed.
*
* @since JavaMail 1.5.3
*/
//@javax.annotation.PreDestroy
public void preDestroy() {
/**
* Close can require permissions so just trigger a push.
*/
push(false, ErrorManager.CLOSE_FAILURE);
}
/**
* Pushes any buffered records to the email server as high importance with
* urgent priority. The internal buffer is then cleared. Does nothing if
* called from inside a push.
* @see #flush()
*/
public void push() {
push(true, ErrorManager.FLUSH_FAILURE);
}
/**
* Pushes any buffered records to the email server as normal priority.
* The internal buffer is then cleared. Does nothing if called from inside
* a push.
* @see #push()
*/
@Override
public void flush() {
push(false, ErrorManager.FLUSH_FAILURE);
}
/**
* Prevents any other records from being published.
* Pushes any buffered records to the email server as normal priority.
* The internal buffer is then cleared. Once this handler is closed it
* will remain closed.
*
* If this Handler is only implicitly closed by the
* LogManager, then verification should
* be turned on.
* @throws SecurityException if a security manager exists and the
* caller does not have LoggingPermission("control").
* @see #flush()
*/
@Override
public void close() {
try {
checkAccess(); //Ensure setLevel works before clearing the buffer.
Message msg = null;
synchronized (this) {
try {
msg = writeLogRecords(ErrorManager.CLOSE_FAILURE);
} finally { //Change level after formatting.
this.logLevel = Level.OFF;
/**
* The sign bit of the capacity is set to ensure that
* records that have passed isLoggable, but have yet to be
* added to the internal buffer, are immediately pushed as
* an email.
*/
if (this.capacity > 0) {
this.capacity = -this.capacity;
}
//Ensure not inside a push.
if (size == 0 && data.length != 1) {
this.data = new LogRecord[1];
this.matched = new int[this.data.length];
}
}
}
if (msg != null) {
send(msg, false, ErrorManager.CLOSE_FAILURE);
}
} catch (final LinkageError JDK8152515) {
reportLinkageError(JDK8152515, ErrorManager.CLOSE_FAILURE);
}
}
/**
* Set the log level specifying which message levels will be
* logged by this Handler. Message levels lower than this
* value will be discarded.
* @param newLevel the new value for the log level
* @throws NullPointerException if newLevel is
* null.
* @throws SecurityException if a security manager exists and
* the caller does not have
* LoggingPermission("control").
*/
@Override
public void setLevel(final Level newLevel) {
if (newLevel == null) {
throw new NullPointerException();
}
checkAccess();
//Don't allow a closed handler to be opened (half way).
synchronized (this) { //Wait for writeLogRecords.
if (this.capacity > 0) {
this.logLevel = newLevel;
}
}
}
/**
* Get the log level specifying which messages will be logged by this
* Handler. Message levels lower than this level will be
* discarded.
*
* @return the level of messages being logged.
*/
@Override
public Level getLevel() {
return logLevel; //Volatile access.
}
/**
* Retrieves the ErrorManager for this Handler.
*
* @return the ErrorManager for this Handler
* @throws SecurityException if a security manager exists and if the caller
* does not have LoggingPermission("control").
*/
@Override
public ErrorManager getErrorManager() {
checkAccess();
return this.errorManager; //Volatile access.
}
/**
* Define an ErrorManager for this Handler.
*
* The ErrorManager's "error" method will be invoked if any errors occur
* while using this Handler.
*
* @param em the new ErrorManager
* @throws SecurityException if a security manager exists and if the
* caller does not have LoggingPermission("control").
* @throws NullPointerException if the given error manager is null.
*/
@Override
public void setErrorManager(final ErrorManager em) {
checkAccess();
setErrorManager0(em);
}
/**
* Sets the error manager on this handler and the super handler. In secure
* environments the super call may not be allowed which is not a failure
* condition as it is an attempt to free the unused handler error manager.
*
* @param em a non null error manager.
* @throws NullPointerException if the given error manager is null.
* @since JavaMail 1.5.6
*/
private void setErrorManager0(final ErrorManager em) {
if (em == null) {
throw new NullPointerException();
}
try {
synchronized (this) { //Wait for writeLogRecords.
this.errorManager = em;
super.setErrorManager(em); //Try to free super error manager.
}
} catch (RuntimeException | LinkageError ignore) {
}
}
/**
* Get the current Filter for this Handler.
*
* @return a Filter object (may be null)
*/
@Override
public Filter getFilter() {
return this.filter; //Volatile access.
}
/**
* Set a Filter to control output on this Handler.
*
* For each call of publish the Handler will call
* this Filter (if it is non-null) to check if the
* LogRecord should be published or discarded.
*
* @param newFilter a Filter object (may be null)
* @throws SecurityException if a security manager exists and if the caller
* does not have LoggingPermission("control").
*/
@Override
public void setFilter(final Filter newFilter) {
checkAccess();
synchronized (this) { //Wait for writeLogRecords.
if (newFilter != filter) {
clearMatches(-1);
}
this.filter = newFilter; //Volatile access.
}
}
/**
* Return the character encoding for this Handler.
*
* @return The encoding name. May be null, which indicates the default
* encoding should be used.
*/
@Override
public synchronized String getEncoding() {
return this.encoding;
}
/**
* Set the character encoding used by this Handler.
*
* The encoding should be set before any LogRecords are written
* to the Handler.
*
* @param encoding The name of a supported character encoding. May be
* null, to indicate the default platform encoding.
* @throws SecurityException if a security manager exists and if the caller
* does not have LoggingPermission("control").
* @throws UnsupportedEncodingException if the named encoding is not
* supported.
*/
@Override
public void setEncoding(String encoding) throws UnsupportedEncodingException {
checkAccess();
setEncoding0(encoding);
}
/**
* Set the character encoding used by this handler. This method does not
* check permissions of the caller.
*
* @param e any encoding name or null for the default.
* @throws UnsupportedEncodingException if the given encoding is not supported.
*/
private void setEncoding0(String e) throws UnsupportedEncodingException {
if (e != null) {
try {
if (!java.nio.charset.Charset.isSupported(e)) {
throw new UnsupportedEncodingException(e);
}
} catch (java.nio.charset.IllegalCharsetNameException icne) {
throw new UnsupportedEncodingException(e);
}
}
synchronized (this) { //Wait for writeLogRecords.
this.encoding = e;
}
}
/**
* Return the Formatter for this Handler.
*
* @return the Formatter (may be null).
*/
@Override
public synchronized Formatter getFormatter() {
return this.formatter;
}
/**
* Set a Formatter. This Formatter will be used
* to format LogRecords for this Handler.
*
* Some Handlers may not use Formatters, in which
* case the Formatter will be remembered, but not used.
*
* @param newFormatter the Formatter to use (may not be null)
* @throws SecurityException if a security manager exists and if the caller
* does not have LoggingPermission("control").
* @throws NullPointerException if the given formatter is null.
*/
@Override
public synchronized void setFormatter(Formatter newFormatter) throws SecurityException {
checkAccess();
if (newFormatter == null) {
throw new NullPointerException();
}
this.formatter = newFormatter;
}
/**
* Gets the push level. The default is Level.OFF meaning that
* this Handler will only push when the internal buffer is full.
* @return the push level.
*/
public final synchronized Level getPushLevel() {
return this.pushLevel;
}
/**
* Sets the push level. This level is used to trigger a push so that
* all pending records are formatted and sent to the email server. When
* the push level triggers a send, the resulting email is flagged as
* high importance with urgent priority.
* @param level Level object.
* @throws NullPointerException if level is null.
* @throws SecurityException if a security manager exists and the
* caller does not have LoggingPermission("control").
* @throws IllegalStateException if called from inside a push.
*/
public final synchronized void setPushLevel(final Level level) {
checkAccess();
if (level == null) {
throw new NullPointerException();
}
if (isWriting) {
throw new IllegalStateException();
}
this.pushLevel = level;
}
/**
* Gets the push filter. The default is null.
* @return the push filter or null.
*/
public final synchronized Filter getPushFilter() {
return this.pushFilter;
}
/**
* Sets the push filter. This filter is only called if the given
* LogRecord level was greater than the push level. If this
* filter returns true, all pending records are formatted and
* sent to the email server. When the push filter triggers a send, the
* resulting email is flagged as high importance with urgent priority.
* @param filter push filter or null
* @throws SecurityException if a security manager exists and the
* caller does not have LoggingPermission("control").
* @throws IllegalStateException if called from inside a push.
*/
public final synchronized void setPushFilter(final Filter filter) {
checkAccess();
if (isWriting) {
throw new IllegalStateException();
}
this.pushFilter = filter;
}
/**
* Gets the comparator used to order all LogRecord objects
* prior to formatting. If null then the order is unspecified.
* @return the LogRecord comparator.
*/
public final synchronized Comparator getComparator() {
return this.comparator;
}
/**
* Sets the comparator used to order all LogRecord objects
* prior to formatting. If null then the order is unspecified.
* @param c the LogRecord comparator.
* @throws SecurityException if a security manager exists and the
* caller does not have LoggingPermission("control").
* @throws IllegalStateException if called from inside a push.
*/
public final synchronized void setComparator(Comparator c) {
checkAccess();
if (isWriting) {
throw new IllegalStateException();
}
this.comparator = c;
}
/**
* Gets the number of log records the internal buffer can hold. When
* capacity is reached, Handler will format all
* LogRecord objects into one email message.
* @return the capacity.
*/
public final synchronized int getCapacity() {
assert capacity != Integer.MIN_VALUE && capacity != 0 : capacity;
return Math.abs(capacity);
}
/**
* Gets the Authenticator used to login to the email server.
* @return an Authenticator or null if none is
* required.
* @throws SecurityException if a security manager exists and the
* caller does not have LoggingPermission("control").
*/
public final synchronized Authenticator getAuthenticator() {
checkAccess();
return this.auth;
}
/**
* Sets the Authenticator used to login to the email server.
* @param auth an Authenticator object or null if none is
* required.
* @throws SecurityException if a security manager exists and the
* caller does not have LoggingPermission("control").
* @throws IllegalStateException if called from inside a push.
*/
public final void setAuthenticator(final Authenticator auth) {
this.setAuthenticator0(auth);
}
/**
* Sets the Authenticator used to login to the email server.
* @param password a password, empty array can be used to only supply a
* user name set by mail.user property, or null if no
* credentials are required.
* @throws SecurityException if a security manager exists and the
* caller does not have LoggingPermission("control").
* @throws IllegalStateException if called from inside a push.
* @see String#toCharArray()
* @since JavaMail 1.4.6
*/
public final void setAuthenticator(final char... password) {
if (password == null) {
setAuthenticator0((Authenticator) null);
} else {
setAuthenticator0(DefaultAuthenticator.of(new String(password)));
}
}
/**
* A private hook to handle possible future overrides. See public method.
* @param auth see public method.
* @throws SecurityException if a security manager exists and the
* caller does not have LoggingPermission("control").
* @throws IllegalStateException if called from inside a push.
*/
private void setAuthenticator0(final Authenticator auth) {
checkAccess();
Session settings;
synchronized (this) {
if (isWriting) {
throw new IllegalStateException();
}
this.auth = auth;
settings = updateSession();
}
verifySettings(settings);
}
/**
* Sets the mail properties used for the session. The key/value pairs
* are defined in the Java Mail API documentation. This
* Handler will also search the LogManager for
* defaults if needed.
* @param props a non null properties object.
* @throws SecurityException if a security manager exists and the
* caller does not have LoggingPermission("control").
* @throws NullPointerException if props is null.
* @throws IllegalStateException if called from inside a push.
*/
public final void setMailProperties(Properties props) {
this.setMailProperties0(props);
}
/**
* A private hook to handle overrides when the public method is declared
* non final. See public method for details.
* @param props see public method.
*/
private void setMailProperties0(Properties props) {
checkAccess();
props = (Properties) props.clone(); //Allow subclass.
Session settings;
synchronized (this) {
if (isWriting) {
throw new IllegalStateException();
}
this.mailProps = props;
settings = updateSession();
}
verifySettings(settings);
}
/**
* Gets a copy of the mail properties used for the session.
* @return a non null properties object.
* @throws SecurityException if a security manager exists and the
* caller does not have LoggingPermission("control").
*/
public final Properties getMailProperties() {
checkAccess();
final Properties props;
synchronized (this) {
props = this.mailProps;
}
return (Properties) props.clone();
}
/**
* Gets the attachment filters. If the attachment filter does not
* allow any LogRecord to be formatted, the attachment may
* be omitted from the email.
* @return a non null array of attachment filters.
*/
public final Filter[] getAttachmentFilters() {
return readOnlyAttachmentFilters().clone();
}
/**
* Sets the attachment filters.
* @param filters a non null array of filters. A
* null index value is allowed. A null value
* means that all records are allowed for the attachment at that index.
* @throws SecurityException if a security manager exists and the
* caller does not have LoggingPermission("control").
* @throws NullPointerException if filters is null
* @throws IndexOutOfBoundsException if the number of attachment
* name formatters do not match the number of attachment formatters.
* @throws IllegalStateException if called from inside a push.
*/
public final void setAttachmentFilters(Filter... filters) {
checkAccess();
if (filters.length == 0) {
filters = emptyFilterArray();
} else {
filters = Arrays.copyOf(filters, filters.length, Filter[].class);
}
synchronized (this) {
if (this.attachmentFormatters.length != filters.length) {
throw attachmentMismatch(this.attachmentFormatters.length, filters.length);
}
if (isWriting) {
throw new IllegalStateException();
}
if (size != 0) {
for (int i = 0; i < filters.length; ++i) {
if (filters[i] != attachmentFilters[i]) {
clearMatches(i);
break;
}
}
}
this.attachmentFilters = filters;
}
}
/**
* Gets the attachment formatters. This Handler is using
* attachments only if the returned array length is non zero.
* @return a non null array of formatters.
*/
public final Formatter[] getAttachmentFormatters() {
Formatter[] formatters;
synchronized (this) {
formatters = this.attachmentFormatters;
}
return formatters.clone();
}
/**
* Sets the attachment Formatter object for this handler.
* The number of formatters determines the number of attachments per
* email. This method should be the first attachment method called.
* To remove all attachments, call this method with empty array.
* @param formatters a non null array of formatters.
* @throws SecurityException if a security manager exists and the
* caller does not have LoggingPermission("control").
* @throws NullPointerException if the given array or any array index is
* null.
* @throws IllegalStateException if called from inside a push.
*/
public final void setAttachmentFormatters(Formatter... formatters) {
checkAccess();
if (formatters.length == 0) { //Null check and length check.
formatters = emptyFormatterArray();
} else {
formatters = Arrays.copyOf(formatters,
formatters.length, Formatter[].class);
for (int i = 0; i < formatters.length; ++i) {
if (formatters[i] == null) {
throw new NullPointerException(atIndexMsg(i));
}
}
}
synchronized (this) {
if (isWriting) {
throw new IllegalStateException();
}
this.attachmentFormatters = formatters;
this.alignAttachmentFilters();
this.alignAttachmentNames();
}
}
/**
* Gets the attachment name formatters.
* If the attachment names were set using explicit names then
* the names can be returned by calling toString on each
* attachment name formatter.
* @return non null array of attachment name formatters.
*/
public final Formatter[] getAttachmentNames() {
final Formatter[] formatters;
synchronized (this) {
formatters = this.attachmentNames;
}
return formatters.clone();
}
/**
* Sets the attachment file name for each attachment. All control
* characters are removed from the attachment names.
* This method will create a set of custom formatters.
* @param names an array of names.
* @throws SecurityException if a security manager exists and the
* caller does not have LoggingPermission("control").
* @throws IndexOutOfBoundsException if the number of attachment
* names do not match the number of attachment formatters.
* @throws IllegalArgumentException if any name is empty.
* @throws NullPointerException if any given array or name is
* null.
* @throws IllegalStateException if called from inside a push.
* @see Character#isISOControl(char)
* @see Character#isISOControl(int)
*/
public final void setAttachmentNames(final String... names) {
checkAccess();
final Formatter[] formatters;
if (names.length == 0) {
formatters = emptyFormatterArray();
} else {
formatters = new Formatter[names.length];
}
for (int i = 0; i < names.length; ++i) {
final String name = names[i];
if (name != null) {
if (name.length() > 0) {
formatters[i] = TailNameFormatter.of(name);
} else {
throw new IllegalArgumentException(atIndexMsg(i));
}
} else {
throw new NullPointerException(atIndexMsg(i));
}
}
synchronized (this) {
if (this.attachmentFormatters.length != names.length) {
throw attachmentMismatch(this.attachmentFormatters.length, names.length);
}
if (isWriting) {
throw new IllegalStateException();
}
this.attachmentNames = formatters;
}
}
/**
* Sets the attachment file name formatters. The format method of each
* attachment formatter will see only the LogRecord objects
* that passed its attachment filter during formatting. The format method
* will typically return an empty string. Instead of being used to format
* records, it is used to gather information about the contents of an
* attachment. The getTail method should be used to construct
* the attachment file name and reset any formatter collected state. All
* control characters will be removed from the output of the formatter. The
* toString method of the given formatter should be overridden
* to provide a useful attachment file name, if possible.
* @param formatters and array of attachment name formatters.
* @throws SecurityException if a security manager exists and the
* caller does not have LoggingPermission("control").
* @throws IndexOutOfBoundsException if the number of attachment
* name formatters do not match the number of attachment formatters.
* @throws NullPointerException if any given array or name is
* null.
* @throws IllegalStateException if called from inside a push.
* @see Character#isISOControl(char)
* @see Character#isISOControl(int)
*/
public final void setAttachmentNames(Formatter... formatters) {
checkAccess();
if (formatters.length == 0) {
formatters = emptyFormatterArray();
} else {
formatters = Arrays.copyOf(formatters, formatters.length,
Formatter[].class);
}
for (int i = 0; i < formatters.length; ++i) {
if (formatters[i] == null) {
throw new NullPointerException(atIndexMsg(i));
}
}
synchronized (this) {
if (this.attachmentFormatters.length != formatters.length) {
throw attachmentMismatch(this.attachmentFormatters.length,
formatters.length);
}
if (isWriting) {
throw new IllegalStateException();
}
this.attachmentNames = formatters;
}
}
/**
* Gets the formatter used to create the subject line.
* If the subject was created using a literal string then
* the toString method can be used to get the subject line.
* @return the formatter.
*/
public final synchronized Formatter getSubject() {
return this.subjectFormatter;
}
/**
* Sets a literal string for the email subject. All control characters are
* removed from the subject line.
* @param subject a non null string.
* @throws SecurityException if a security manager exists and the
* caller does not have LoggingPermission("control").
* @throws NullPointerException if subject is
* null.
* @throws IllegalStateException if called from inside a push.
* @see Character#isISOControl(char)
* @see Character#isISOControl(int)
*/
public final void setSubject(final String subject) {
if (subject != null) {
this.setSubject(TailNameFormatter.of(subject));
} else {
checkAccess();
throw new NullPointerException();
}
}
/**
* Sets the subject formatter for email. The format method of the subject
* formatter will see all LogRecord objects that were published
* to this Handler during formatting and will typically return
* an empty string. This formatter is used to gather information to create
* a summary about what information is contained in the email. The
* getTail method should be used to construct the subject and
* reset any formatter collected state. All control characters
* will be removed from the formatter output. The toString
* method of the given formatter should be overridden to provide a useful
* subject, if possible.
* @param format the subject formatter.
* @throws SecurityException if a security manager exists and the
* caller does not have LoggingPermission("control").
* @throws NullPointerException if format is null.
* @throws IllegalStateException if called from inside a push.
* @see Character#isISOControl(char)
* @see Character#isISOControl(int)
*/
public final void setSubject(final Formatter format) {
checkAccess();
if (format == null) {
throw new NullPointerException();
}
synchronized (this) {
if (isWriting) {
throw new IllegalStateException();
}
this.subjectFormatter = format;
}
}
/**
* Protected convenience method to report an error to this Handler's
* ErrorManager. This method will prefix all non null error messages with
* Level.SEVERE.getName(). This allows the receiving error
* manager to determine if the msg parameter is a simple error
* message or a raw email message.
* @param msg a descriptive string (may be null)
* @param ex an exception (may be null)
* @param code an error code defined in ErrorManager
*/
@Override
protected void reportError(String msg, Exception ex, int code) {
try {
if (msg != null) {
errorManager.error(Level.SEVERE.getName()
.concat(": ").concat(msg), ex, code);
} else {
errorManager.error(null, ex, code);
}
} catch (RuntimeException | LinkageError GLASSFISH_21258) {
reportLinkageError(GLASSFISH_21258, code);
}
}
/**
* Calls log manager checkAccess if this is sealed.
*/
private void checkAccess() {
if (sealed) {
LogManagerProperties.checkLogManagerAccess();
}
}
/**
* Determines the mimeType of a formatter from the getHead call.
* This could be made protected, or a new class could be created to do
* this type of conversion. Currently, this is only used for the body
* since the attachments are computed by filename.
* Package-private for unit testing.
* @param chunk any char sequence or null.
* @return return the mime type or null for text/plain.
*/
final String contentTypeOf(CharSequence chunk) {
if (!isEmpty(chunk)) {
final int MAX_CHARS = 25;
if (chunk.length() > MAX_CHARS) {
chunk = chunk.subSequence(0, MAX_CHARS);
}
try {
final String charset = getEncodingName();
final byte[] b = chunk.toString().getBytes(charset);
final ByteArrayInputStream in = new ByteArrayInputStream(b);
assert in.markSupported() : in.getClass().getName();
return URLConnection.guessContentTypeFromStream(in);
} catch (final IOException IOE) {
reportError(IOE.getMessage(), IOE, ErrorManager.FORMAT_FAILURE);
}
}
return null; //text/plain
}
/**
* Determines the mimeType of a formatter by the class name. This method
* avoids calling getHead and getTail of content formatters during verify
* because they might trigger side effects or excessive work. The name
* formatters and subject are usually safe to call.
* Package-private for unit testing.
*
* @param f the formatter or null.
* @return return the mime type or null, meaning text/plain.
* @since JavaMail 1.5.6
*/
final String contentTypeOf(final Formatter f) {
assert Thread.holdsLock(this);
if (f != null) {
String type = getContentType(f.getClass().getName());
if (type != null) {
return type;
}
for (Class k = f.getClass(); k != Formatter.class;
k = k.getSuperclass()) {
String name;
try {
name = k.getSimpleName();
} catch (final InternalError JDK8057919) {
name = k.getName();
}
name = name.toLowerCase(Locale.ENGLISH);
for (int idx = name.indexOf('$') + 1;
(idx = name.indexOf("ml", idx)) > -1; idx += 2) {
if (idx > 0) {
if (name.charAt(idx - 1) == 'x') {
return "application/xml";
}
if (idx > 1 && name.charAt(idx - 2) == 'h'
&& name.charAt(idx - 1) == 't') {
return "text/html";
}
}
}
}
}
return null;
}
/**
* Determines if the given throwable is a no content exception. It is
* assumed Transport.sendMessage will call Message.writeTo so we need to
* ignore any exceptions that could be layered on top of that call chain to
* infer that sendMessage is failing because of writeTo. Package-private
* for unit testing.
* @param msg the message without content.
* @param t the throwable chain to test.
* @return true if the throwable is a missing content exception.
* @throws NullPointerException if any of the arguments are null.
* @since JavaMail 1.4.5
*/
@SuppressWarnings({"UseSpecificCatch", "ThrowableResultIgnored"})
final boolean isMissingContent(Message msg, Throwable t) {
final Object ccl = getAndSetContextClassLoader(MAILHANDLER_LOADER);
try {
msg.writeTo(new ByteArrayOutputStream(MIN_HEADER_SIZE));
} catch (final RuntimeException RE) {
throw RE; //Avoid catch all.
} catch (final Exception noContent) {
final String txt = noContent.getMessage();
if (!isEmpty(txt)) {
int limit = 0;
while (t != null) {
if (noContent.getClass() == t.getClass()
&& txt.equals(t.getMessage())) {
return true;
}
//Not all Jakarta Mail implementations support JDK 1.4
//exception chaining.
final Throwable cause = t.getCause();
if (cause == null && t instanceof MessagingException) {
t = ((MessagingException) t).getNextException();
} else {
t = cause;
}
//Deal with excessive cause chains and cyclic throwables.
if (++limit == (1 << 16)) {
break; //Give up.
}
}
}
} finally {
getAndSetContextClassLoader(ccl);
}
return false;
}
/**
* Converts a mime message to a raw string or formats the reason
* why message can't be changed to raw string and reports it.
* @param msg the mime message.
* @param ex the original exception.
* @param code the ErrorManager code.
* @since JavaMail 1.4.5
*/
@SuppressWarnings("UseSpecificCatch")
private void reportError(Message msg, Exception ex, int code) {
try {
try { //Use direct call so we do not prefix raw email.
errorManager.error(toRawString(msg), ex, code);
} catch (final RuntimeException re) {
reportError(toMsgString(re), ex, code);
} catch (final Exception e) {
reportError(toMsgString(e), ex, code);
}
} catch (final LinkageError GLASSFISH_21258) {
reportLinkageError(GLASSFISH_21258, code);
}
}
/**
* Reports the given linkage error or runtime exception.
*
* The current LogManager code will stop closing all remaining handlers if
* an error is thrown during resetLogger. This is a workaround for
* GLASSFISH-21258 and JDK-8152515.
* @param le the linkage error or a RuntimeException.
* @param code the ErrorManager code.
* @throws NullPointerException if error is null.
* @since JavaMail 1.5.3
*/
private void reportLinkageError(final Throwable le, final int code) {
if (le == null) {
throw new NullPointerException(String.valueOf(code));
}
final Integer idx = MUTEX.get();
if (idx == null || idx > MUTEX_LINKAGE) {
MUTEX.set(MUTEX_LINKAGE);
try {
Thread.currentThread().getUncaughtExceptionHandler()
.uncaughtException(Thread.currentThread(), le);
} catch (RuntimeException | LinkageError ignore) {
} finally {
if (idx != null) {
MUTEX.set(idx);
} else {
MUTEX.remove();
}
}
}
}
/**
* Determines the mimeType from the given file name.
* Used to override the body content type and used for all attachments.
* @param name the file name or class name.
* @return the mime type or null for text/plain.
*/
private String getContentType(final String name) {
assert Thread.holdsLock(this);
final String type = contentTypes.getContentType(name);
if ("application/octet-stream".equalsIgnoreCase(type)) {
return null; //Formatters return strings, default to text/plain.
}
return type;
}
/**
* Gets the encoding set for this handler, mime encoding, or file encoding.
* @return the java charset name, never null.
* @since JavaMail 1.4.5
*/
private String getEncodingName() {
String charset = getEncoding();
if (charset == null) {
charset = MimeUtility.getDefaultJavaCharset();
}
return charset;
}
/**
* Set the content for a part using the encoding assigned to the handler.
* @param part the part to assign.
* @param buf the formatted data.
* @param type the mime type or null, meaning text/plain.
* @throws MessagingException if there is a problem.
*/
private void setContent(MimePart part, CharSequence buf, String type) throws MessagingException {
final String charset = getEncodingName();
if (type != null && !"text/plain".equalsIgnoreCase(type)) {
type = contentWithEncoding(type, charset);
try {
DataSource source = new ByteArrayDataSource(buf.toString(), type);
part.setDataHandler(new DataHandler(source));
} catch (final IOException IOE) {
reportError(IOE.getMessage(), IOE, ErrorManager.FORMAT_FAILURE);
part.setText(buf.toString(), charset);
}
} else {
part.setText(buf.toString(), MimeUtility.mimeCharset(charset));
}
}
/**
* Replaces the charset parameter with the current encoding.
* @param type the content type.
* @param encoding the java charset name.
* @return the type with a specified encoding.
*/
private String contentWithEncoding(String type, String encoding) {
assert encoding != null;
try {
final ContentType ct = new ContentType(type);
ct.setParameter("charset", MimeUtility.mimeCharset(encoding));
encoding = ct.toString(); //See jakarta.mail.internet.ContentType.
if (!isEmpty(encoding)) { //Support pre K5687.
type = encoding;
}
} catch (final MessagingException ME) {
reportError(type, ME, ErrorManager.FORMAT_FAILURE);
}
return type;
}
/**
* Sets the capacity for this handler. This method is kept private
* because we would have to define a public policy for when the size is
* greater than the capacity.
* E.G. do nothing, flush now, truncate now, push now and resize.
* @param newCapacity the max number of records.
* @throws SecurityException if a security manager exists and the
* caller does not have LoggingPermission("control").
* @throws IllegalStateException if called from inside a push.
*/
private synchronized void setCapacity0(final int newCapacity) {
checkAccess();
if (newCapacity <= 0) {
throw new IllegalArgumentException("Capacity must be greater than zero.");
}
if (isWriting) {
throw new IllegalStateException();
}
if (this.capacity < 0) { //If closed, remain closed.
this.capacity = -newCapacity;
} else {
this.capacity = newCapacity;
}
}
/**
* Gets the attachment filters using a happens-before relationship between
* this method and setAttachmentFilters. The attachment filters are treated
* as copy-on-write, so the returned array must never be modified or
* published outside this class.
* @return a read only array of filters.
*/
private Filter[] readOnlyAttachmentFilters() {
return this.attachmentFilters;
}
/**
* Factory for empty formatter arrays.
* @return an empty array.
*/
private static Formatter[] emptyFormatterArray() {
return EMPTY_FORMATTERS;
}
/**
* Factory for empty filter arrays.
* @return an empty array.
*/
private static Filter[] emptyFilterArray() {
return EMPTY_FILTERS;
}
/**
* Expand or shrink the attachment name formatters with the attachment
* formatters.
* @return true if size was changed.
*/
private boolean alignAttachmentNames() {
assert Thread.holdsLock(this);
boolean fixed = false;
final int expect = this.attachmentFormatters.length;
final int current = this.attachmentNames.length;
if (current != expect) {
this.attachmentNames = Arrays.copyOf(attachmentNames, expect,
Formatter[].class);
fixed = current != 0;
}
//Copy of zero length array is cheap, warm up copyOf.
if (expect == 0) {
this.attachmentNames = emptyFormatterArray();
assert this.attachmentNames.length == 0;
} else {
for (int i = 0; i < expect; ++i) {
if (this.attachmentNames[i] == null) {
this.attachmentNames[i] = TailNameFormatter.of(
toString(this.attachmentFormatters[i]));
}
}
}
return fixed;
}
/**
* Expand or shrink the attachment filters with the attachment formatters.
* @return true if the size was changed.
*/
private boolean alignAttachmentFilters() {
assert Thread.holdsLock(this);
boolean fixed = false;
final int expect = this.attachmentFormatters.length;
final int current = this.attachmentFilters.length;
if (current != expect) {
this.attachmentFilters = Arrays.copyOf(attachmentFilters, expect,
Filter[].class);
clearMatches(current);
fixed = current != 0;
//Array elements default to null so skip filling if body filter
//is null. If not null then only assign to expanded elements.
final Filter body = this.filter;
if (body != null) {
for (int i = current; i < expect; ++i) {
this.attachmentFilters[i] = body;
}
}
}
//Copy of zero length array is cheap, warm up copyOf.
if (expect == 0) {
this.attachmentFilters = emptyFilterArray();
assert this.attachmentFilters.length == 0;
}
return fixed;
}
/**
* Sets the size to zero and clears the current buffer.
*/
private void reset() {
assert Thread.holdsLock(this);
if (size < data.length) {
Arrays.fill(data, 0, size, null);
} else {
Arrays.fill(data, null);
}
this.size = 0;
}
/**
* Expands the internal buffer up to the capacity.
*/
private void grow() {
assert Thread.holdsLock(this);
final int len = data.length;
int newCapacity = len + (len >> 1) + 1;
if (newCapacity > capacity || newCapacity < len) {
newCapacity = capacity;
}
assert len != capacity : len;
this.data = Arrays.copyOf(data, newCapacity, LogRecord[].class);
this.matched = Arrays.copyOf(matched, newCapacity);
}
/**
* Configures the handler properties from the log manager.
* @param props the given mail properties. Maybe null and are never
* captured by this handler.
* @throws SecurityException if a security manager exists and the
* caller does not have LoggingPermission("control").
*/
private synchronized void init(final Properties props) {
assert this.errorManager != null;
final String p = getClass().getName();
this.mailProps = new Properties(); //See method param comments.
final Object ccl = getAndSetContextClassLoader(MAILHANDLER_LOADER);
try {
this.contentTypes = FileTypeMap.getDefaultFileTypeMap();
} finally {
getAndSetContextClassLoader(ccl);
}
//Assign any custom error manager first so it can detect all failures.
initErrorManager(p);
initLevel(p);
initFilter(p);
initCapacity(p);
initAuthenticator(p);
initEncoding(p);
initFormatter(p);
initComparator(p);
initPushLevel(p);
initPushFilter(p);
initSubject(p);
initAttachmentFormaters(p);
initAttachmentFilters(p);
initAttachmentNames(p);
if (props == null && fromLogManager(p.concat(".verify")) != null) {
verifySettings(initSession());
}
intern(); //Show verify warnings first.
}
/**
* Interns the error manager, formatters, and filters contained in this
* handler. The comparator is not interned. This method can only be
* called from init after all of formatters and filters are in a constructed
* and in a consistent state.
* @since JavaMail 1.5.0
*/
private void intern() {
assert Thread.holdsLock(this);
try {
Object canidate;
Object result;
final Map seen = new HashMap<>();
try {
intern(seen, this.errorManager);
} catch (final SecurityException se) {
reportError(se.getMessage(), se, ErrorManager.OPEN_FAILURE);
}
try {
canidate = this.filter;
result = intern(seen, canidate);
if (result != canidate && result instanceof Filter) {
this.filter = (Filter) result;
}
canidate = this.formatter;
result = intern(seen, canidate);
if (result != canidate && result instanceof Formatter) {
this.formatter = (Formatter) result;
}
} catch (final SecurityException se) {
reportError(se.getMessage(), se, ErrorManager.OPEN_FAILURE);
}
canidate = this.subjectFormatter;
result = intern(seen, canidate);
if (result != canidate && result instanceof Formatter) {
this.subjectFormatter = (Formatter) result;
}
canidate = this.pushFilter;
result = intern(seen, canidate);
if (result != canidate && result instanceof Filter) {
this.pushFilter = (Filter) result;
}
for (int i = 0; i < attachmentFormatters.length; ++i) {
canidate = attachmentFormatters[i];
result = intern(seen, canidate);
if (result != canidate && result instanceof Formatter) {
attachmentFormatters[i] = (Formatter) result;
}
canidate = attachmentFilters[i];
result = intern(seen, canidate);
if (result != canidate && result instanceof Filter) {
attachmentFilters[i] = (Filter) result;
}
canidate = attachmentNames[i];
result = intern(seen, canidate);
if (result != canidate && result instanceof Formatter) {
attachmentNames[i] = (Formatter) result;
}
}
} catch (final Exception skip) {
reportError(skip.getMessage(), skip, ErrorManager.OPEN_FAILURE);
} catch (final LinkageError skip) {
reportError(skip.getMessage(), new InvocationTargetException(skip),
ErrorManager.OPEN_FAILURE);
}
}
/**
* If possible performs an intern of the given object into the
* map. If the object can not be interned the given object is returned.
* @param m the map used to record the interned values.
* @param o the object to try an intern.
* @return the original object or an intern replacement.
* @throws SecurityException if this operation is not allowed by the
* security manager.
* @throws Exception if there is an unexpected problem.
* @since JavaMail 1.5.0
*/
private Object intern(Map m, Object o) throws Exception {
if (o == null) {
return null;
}
/**
* The common case is that most objects will not intern. The given
* object has a public no argument constructor or is an instance of a
* TailNameFormatter. TailNameFormatter is safe use as a map key.
* For everything else we create a clone of the given object.
* This is done because of the following:
* 1. Clones can be used to test that a class provides an equals method
* and that the equals method works correctly.
* 2. Calling equals on the given object is assumed to be cheap.
* 3. The intern map can be filtered so it only contains objects that
* can be interned, which reduces the memory footprint.
* 4. Clones are method local garbage.
* 5. Hash code is only called on the clones so bias locking is not
* disabled on the objects the handler will use.
*/
final Object key;
if (o.getClass().getName().equals(TailNameFormatter.class.getName())) {
key = o;
} else {
//This call was already made in the LogManagerProperties so this
//shouldn't trigger loading of any lazy reflection code.
key = o.getClass().getConstructor().newInstance();
}
final Object use;
//Check the classloaders of each object avoiding the security manager.
if (key.getClass() == o.getClass()) {
Object found = m.get(key); //Transitive equals test.
if (found == null) {
//Ensure that equals is symmetric to prove intern is safe.
final boolean right = key.equals(o);
final boolean left = o.equals(key);
if (right && left) {
//Assume hashCode is defined at this point.
found = m.put(o, o);
if (found != null) {
reportNonDiscriminating(key, found);
found = m.remove(key);
if (found != o) {
reportNonDiscriminating(key, found);
m.clear(); //Try to restore order.
}
}
} else {
if (right != left) {
reportNonSymmetric(o, key);
}
}
use = o;
} else {
//Check for a discriminating equals method.
if (o.getClass() == found.getClass()) {
use = found;
} else {
reportNonDiscriminating(o, found);
use = o;
}
}
} else {
use = o;
}
return use;
}
/**
* Factory method used to create a java.util.logging.SimpleFormatter.
* @return a new SimpleFormatter.
* @since JavaMail 1.5.6
*/
private static Formatter createSimpleFormatter() {
//Don't force the byte code verifier to load the formatter.
return Formatter.class.cast(new SimpleFormatter());
}
/**
* Checks a char sequence value for null or empty.
* @param s the char sequence.
* @return true if the given string is null or zero length.
*/
private static boolean isEmpty(final CharSequence s) {
return s == null || s.length() == 0;
}
/**
* Checks that a string is not empty and not equal to the literal "null".
* @param name the string to check for a value.
* @return true if the string has a valid value.
*/
private static boolean hasValue(final String name) {
return !isEmpty(name) && !"null".equalsIgnoreCase(name);
}
/**
* Parses LogManager string values into objects used by this handler.
* @param p the handler class name used as the prefix.
* @throws NullPointerException if the given argument is null.
* @throws SecurityException if not allowed.
*/
private void initAttachmentFilters(final String p) {
assert Thread.holdsLock(this);
assert this.attachmentFormatters != null;
final String list = fromLogManager(p.concat(".attachment.filters"));
if (!isEmpty(list)) {
final String[] names = list.split(",");
Filter[] a = new Filter[names.length];
for (int i = 0; i < a.length; ++i) {
names[i] = names[i].trim();
if (!"null".equalsIgnoreCase(names[i])) {
try {
a[i] = LogManagerProperties.newFilter(names[i]);
} catch (final SecurityException SE) {
throw SE; //Avoid catch all.
} catch (final Exception E) {
reportError(E.getMessage(), E, ErrorManager.OPEN_FAILURE);
}
}
}
this.attachmentFilters = a;
if (alignAttachmentFilters()) {
reportError("Attachment filters.",
attachmentMismatch("Length mismatch."), ErrorManager.OPEN_FAILURE);
}
} else {
this.attachmentFilters = emptyFilterArray();
alignAttachmentFilters();
}
}
/**
* Parses LogManager string values into objects used by this handler.
* @param p the handler class name used as the prefix.
* @throws NullPointerException if the given argument is null.
* @throws SecurityException if not allowed.
*/
private void initAttachmentFormaters(final String p) {
assert Thread.holdsLock(this);
final String list = fromLogManager(p.concat(".attachment.formatters"));
if (!isEmpty(list)) {
final Formatter[] a;
final String[] names = list.split(",");
if (names.length == 0) {
a = emptyFormatterArray();
} else {
a = new Formatter[names.length];
}
for (int i = 0; i < a.length; ++i) {
names[i] = names[i].trim();
if (!"null".equalsIgnoreCase(names[i])) {
try {
a[i] = LogManagerProperties.newFormatter(names[i]);
if (a[i] instanceof TailNameFormatter) {
final Exception CNFE = new ClassNotFoundException(a[i].toString());
reportError("Attachment formatter.", CNFE, ErrorManager.OPEN_FAILURE);
a[i] = createSimpleFormatter();
}
} catch (final SecurityException SE) {
throw SE; //Avoid catch all.
} catch (final Exception E) {
reportError(E.getMessage(), E, ErrorManager.OPEN_FAILURE);
a[i] = createSimpleFormatter();
}
} else {
final Exception NPE = new NullPointerException(atIndexMsg(i));
reportError("Attachment formatter.", NPE, ErrorManager.OPEN_FAILURE);
a[i] = createSimpleFormatter();
}
}
this.attachmentFormatters = a;
} else {
this.attachmentFormatters = emptyFormatterArray();
}
}
/**
* Parses LogManager string values into objects used by this handler.
* @param p the handler class name used as the prefix.
* @throws NullPointerException if the given argument is null.
* @throws SecurityException if not allowed.
*/
private void initAttachmentNames(final String p) {
assert Thread.holdsLock(this);
assert this.attachmentFormatters != null;
final String list = fromLogManager(p.concat(".attachment.names"));
if (!isEmpty(list)) {
final String[] names = list.split(",");
final Formatter[] a = new Formatter[names.length];
for (int i = 0; i < a.length; ++i) {
names[i] = names[i].trim();
if (!"null".equalsIgnoreCase(names[i])) {
try {
try {
a[i] = LogManagerProperties.newFormatter(names[i]);
} catch (ClassNotFoundException
| ClassCastException literal) {
a[i] = TailNameFormatter.of(names[i]);
}
} catch (final SecurityException SE) {
throw SE; //Avoid catch all.
} catch (final Exception E) {
reportError(E.getMessage(), E, ErrorManager.OPEN_FAILURE);
}
} else {
final Exception NPE = new NullPointerException(atIndexMsg(i));
reportError("Attachment names.", NPE, ErrorManager.OPEN_FAILURE);
}
}
this.attachmentNames = a;
if (alignAttachmentNames()) { //Any null indexes are repaired.
reportError("Attachment names.",
attachmentMismatch("Length mismatch."), ErrorManager.OPEN_FAILURE);
}
} else {
this.attachmentNames = emptyFormatterArray();
alignAttachmentNames();
}
}
/**
* Parses LogManager string values into objects used by this handler.
* @param p the handler class name used as the prefix.
* @throws NullPointerException if the given argument is null.
* @throws SecurityException if not allowed.
*/
private void initAuthenticator(final String p) {
assert Thread.holdsLock(this);
String name = fromLogManager(p.concat(".authenticator"));
if (name != null && !"null".equalsIgnoreCase(name)) {
if (name.length() != 0) {
try {
this.auth = LogManagerProperties
.newObjectFrom(name, Authenticator.class);
} catch (final SecurityException SE) {
throw SE;
} catch (final ClassNotFoundException
| ClassCastException literalAuth) {
this.auth = DefaultAuthenticator.of(name);
} catch (final Exception E) {
reportError(E.getMessage(), E, ErrorManager.OPEN_FAILURE);
}
} else { //Authenticator is installed to provide the user name.
this.auth = DefaultAuthenticator.of(name);
}
}
}
/**
* Parses LogManager string values into objects used by this handler.
* @param p the handler class name used as the prefix.
* @throws NullPointerException if the given argument is null.
* @throws SecurityException if not allowed.
*/
private void initLevel(final String p) {
assert Thread.holdsLock(this);
try {
final String val = fromLogManager(p.concat(".level"));
if (val != null) {
logLevel = Level.parse(val);
} else {
logLevel = Level.WARNING;
}
} catch (final SecurityException SE) {
throw SE; //Avoid catch all.
} catch (final RuntimeException RE) {
reportError(RE.getMessage(), RE, ErrorManager.OPEN_FAILURE);
logLevel = Level.WARNING;
}
}
/**
* Parses LogManager string values into objects used by this handler.
* @param p the handler class name used as the prefix.
* @throws NullPointerException if the given argument is null.
* @throws SecurityException if not allowed.
*/
private void initFilter(final String p) {
assert Thread.holdsLock(this);
try {
String name = fromLogManager(p.concat(".filter"));
if (hasValue(name)) {
filter = LogManagerProperties.newFilter(name);
}
} catch (final SecurityException SE) {
throw SE; //Avoid catch all.
} catch (final Exception E) {
reportError(E.getMessage(), E, ErrorManager.OPEN_FAILURE);
}
}
/**
* Parses LogManager string values into objects used by this handler.
* @param p the handler class name used as the prefix.
* @throws NullPointerException if argument is null.
* @throws SecurityException if not allowed.
*/
private void initCapacity(final String p) {
assert Thread.holdsLock(this);
final int DEFAULT_CAPACITY = 1000;
try {
final String value = fromLogManager(p.concat(".capacity"));
if (value != null) {
this.setCapacity0(Integer.parseInt(value));
} else {
this.setCapacity0(DEFAULT_CAPACITY);
}
} catch (final SecurityException SE) {
throw SE; //Avoid catch all.
} catch (final RuntimeException RE) {
reportError(RE.getMessage(), RE, ErrorManager.OPEN_FAILURE);
}
if (capacity <= 0) {
capacity = DEFAULT_CAPACITY;
}
this.data = new LogRecord[1];
this.matched = new int[this.data.length];
}
/**
* Parses LogManager string values into objects used by this handler.
* @param p the handler class name used as the prefix.
* @throws NullPointerException if the given argument is null.
* @throws SecurityException if not allowed.
*/
private void initEncoding(final String p) {
assert Thread.holdsLock(this);
try {
String e = fromLogManager(p.concat(".encoding"));
if (e != null) {
setEncoding0(e);
}
} catch (final SecurityException SE) {
throw SE; //Avoid catch all.
} catch (UnsupportedEncodingException | RuntimeException UEE) {
reportError(UEE.getMessage(), UEE, ErrorManager.OPEN_FAILURE);
}
}
/**
* Used to get or create the default ErrorManager used before init.
* @return the super error manager or a new ErrorManager.
* @since JavaMail 1.5.3
*/
private ErrorManager defaultErrorManager() {
ErrorManager em;
try { //Try to share the super error manager.
em = super.getErrorManager();
} catch (RuntimeException | LinkageError ignore) {
em = null;
}
//Don't assume that the super call is not null.
if (em == null) {
em = new ErrorManager();
}
return em;
}
/**
* Parses LogManager string values into objects used by this handler.
* @param p the handler class name used as the prefix.
* @throws NullPointerException if the given argument is null.
* @throws SecurityException if not allowed.
*/
private void initErrorManager(final String p) {
assert Thread.holdsLock(this);
try {
String name = fromLogManager(p.concat(".errorManager"));
if (name != null) {
setErrorManager0(LogManagerProperties.newErrorManager(name));
}
} catch (final SecurityException SE) {
throw SE; //Avoid catch all.
} catch (final Exception E) {
reportError(E.getMessage(), E, ErrorManager.OPEN_FAILURE);
}
}
/**
* Parses LogManager string values into objects used by this handler.
* @param p the handler class name used as the prefix.
* @throws NullPointerException if the given argument is null.
* @throws SecurityException if not allowed.
*/
private void initFormatter(final String p) {
assert Thread.holdsLock(this);
try {
String name = fromLogManager(p.concat(".formatter"));
if (hasValue(name)) {
final Formatter f
= LogManagerProperties.newFormatter(name);
assert f != null;
if (f instanceof TailNameFormatter == false) {
formatter = f;
} else {
formatter = createSimpleFormatter();
}
} else {
formatter = createSimpleFormatter();
}
} catch (final SecurityException SE) {
throw SE; //Avoid catch all.
} catch (final Exception E) {
reportError(E.getMessage(), E, ErrorManager.OPEN_FAILURE);
formatter = createSimpleFormatter();
}
}
/**
* Parses LogManager string values into objects used by this handler.
* @param p the handler class name used as the prefix.
* @throws NullPointerException if the given argument is null.
* @throws SecurityException if not allowed.
*/
private void initComparator(final String p) {
assert Thread.holdsLock(this);
try {
String name = fromLogManager(p.concat(".comparator"));
String reverse = fromLogManager(p.concat(".comparator.reverse"));
if (hasValue(name)) {
comparator = LogManagerProperties.newComparator(name);
if (Boolean.parseBoolean(reverse)) {
assert comparator != null : "null";
comparator = LogManagerProperties.reverseOrder(comparator);
}
} else {
if (!isEmpty(reverse)) {
throw new IllegalArgumentException(
"No comparator to reverse.");
}
}
} catch (final SecurityException SE) {
throw SE; //Avoid catch all.
} catch (final Exception E) {
reportError(E.getMessage(), E, ErrorManager.OPEN_FAILURE);
}
}
/**
* Parses LogManager string values into objects used by this handler.
* @param p the handler class name used as the prefix.
* @throws NullPointerException if the given argument is null.
* @throws SecurityException if not allowed.
*/
private void initPushLevel(final String p) {
assert Thread.holdsLock(this);
try {
final String val = fromLogManager(p.concat(".pushLevel"));
if (val != null) {
this.pushLevel = Level.parse(val);
}
} catch (final RuntimeException RE) {
reportError(RE.getMessage(), RE, ErrorManager.OPEN_FAILURE);
}
if (this.pushLevel == null) {
this.pushLevel = Level.OFF;
}
}
/**
* Parses LogManager string values into objects used by this handler.
* @param p the handler class name used as the prefix.
* @throws NullPointerException if the given argument is null.
* @throws SecurityException if not allowed.
*/
private void initPushFilter(final String p) {
assert Thread.holdsLock(this);
try {
String name = fromLogManager(p.concat(".pushFilter"));
if (hasValue(name)) {
this.pushFilter = LogManagerProperties.newFilter(name);
}
} catch (final SecurityException SE) {
throw SE; //Avoid catch all.
} catch (final Exception E) {
reportError(E.getMessage(), E, ErrorManager.OPEN_FAILURE);
}
}
/**
* Parses LogManager string values into objects used by this handler.
* @param p the handler class name used as the prefix.
* @throws NullPointerException if the given argument is null.
* @throws SecurityException if not allowed.
*/
private void initSubject(final String p) {
assert Thread.holdsLock(this);
String name = fromLogManager(p.concat(".subject"));
if (name == null) { //Soft dependency on CollectorFormatter.
name = "com.sun.mail.util.logging.CollectorFormatter";
}
if (hasValue(name)) {
try {
this.subjectFormatter = LogManagerProperties.newFormatter(name);
} catch (final SecurityException SE) {
throw SE; //Avoid catch all.
} catch (ClassNotFoundException
| ClassCastException literalSubject) {
this.subjectFormatter = TailNameFormatter.of(name);
} catch (final Exception E) {
this.subjectFormatter = TailNameFormatter.of(name);
reportError(E.getMessage(), E, ErrorManager.OPEN_FAILURE);
}
} else { //User has forced empty or literal null.
this.subjectFormatter = TailNameFormatter.of(name);
}
}
/**
* Check if any attachment would actually format the given
* LogRecord. This method does not check if the handler
* is level is set to OFF or if the handler is closed.
* @param record a LogRecord
* @return true if the LogRecord would be formatted.
*/
private boolean isAttachmentLoggable(final LogRecord record) {
final Filter[] filters = readOnlyAttachmentFilters();
for (int i = 0; i < filters.length; ++i) {
final Filter f = filters[i];
if (f == null || f.isLoggable(record)) {
setMatchedPart(i);
return true;
}
}
return false;
}
/**
* Check if this Handler would push after storing the
* LogRecord into its internal buffer.
* @param record a LogRecord
* @return true if the LogRecord triggers an email push.
* @throws NullPointerException if tryMutex was not called.
*/
private boolean isPushable(final LogRecord record) {
assert Thread.holdsLock(this);
final int value = getPushLevel().intValue();
if (value == offValue || record.getLevel().intValue() < value) {
return false;
}
final Filter push = getPushFilter();
if (push == null) {
return true;
}
final int match = getMatchedPart();
if ((match == -1 && getFilter() == push)
|| (match >= 0 && attachmentFilters[match] == push)) {
return true;
} else {
return push.isLoggable(record);
}
}
/**
* Used to perform push or flush.
* @param priority true for high priority otherwise false for normal.
* @param code the error manager code.
*/
private void push(final boolean priority, final int code) {
if (tryMutex()) {
try {
final Message msg = writeLogRecords(code);
if (msg != null) {
send(msg, priority, code);
}
} catch (final LinkageError JDK8152515) {
reportLinkageError(JDK8152515, code);
} finally {
releaseMutex();
}
} else {
reportUnPublishedError(null);
}
}
/**
* Used to send the generated email or write its contents to the
* error manager for this handler. This method does not hold any
* locks so new records can be added to this handler during a send or
* failure.
* @param msg the message or null.
* @param priority true for high priority or false for normal.
* @param code the ErrorManager code.
* @throws NullPointerException if message is null.
*/
private void send(Message msg, boolean priority, int code) {
try {
envelopeFor(msg, priority);
final Object ccl = getAndSetContextClassLoader(MAILHANDLER_LOADER);
try { //JDK-8025251
Transport.send(msg); //Calls save changes.
} finally {
getAndSetContextClassLoader(ccl);
}
} catch (final RuntimeException re) {
reportError(msg, re, code);
} catch (final Exception e) {
reportError(msg, e, code);
}
}
/**
* Performs a sort on the records if needed.
* Any exception thrown during a sort is considered a formatting error.
*/
private void sort() {
assert Thread.holdsLock(this);
if (comparator != null) {
try {
if (size != 1) {
Arrays.sort(data, 0, size, comparator);
} else {
if (comparator.compare(data[0], data[0]) != 0) {
throw new IllegalArgumentException(
comparator.getClass().getName());
}
}
} catch (final RuntimeException RE) {
reportError(RE.getMessage(), RE, ErrorManager.FORMAT_FAILURE);
}
}
}
/**
* Formats all records in the buffer and places the output in a Message.
* This method under most conditions will catch, report, and continue when
* exceptions occur. This method holds a lock on this handler.
* @param code the error manager code.
* @return null if there are no records or is currently in a push.
* Otherwise a new message is created with a formatted message and
* attached session.
*/
private Message writeLogRecords(final int code) {
try {
synchronized (this) {
if (size > 0 && !isWriting) {
isWriting = true;
try {
return writeLogRecords0();
} finally {
isWriting = false;
if (size > 0) {
reset();
}
}
}
}
} catch (final RuntimeException re) {
reportError(re.getMessage(), re, code);
} catch (final Exception e) {
reportError(e.getMessage(), e, code);
}
return null;
}
/**
* Formats all records in the buffer and places the output in a Message.
* This method under most conditions will catch, report, and continue when
* exceptions occur.
*
* @return null if there are no records or is currently in a push. Otherwise
* a new message is created with a formatted message and attached session.
* @throws MessagingException if there is a problem.
* @throws IOException if there is a problem.
* @throws RuntimeException if there is an unexpected problem.
* @since JavaMail 1.5.3
*/
private Message writeLogRecords0() throws Exception {
assert Thread.holdsLock(this);
sort();
if (session == null) {
initSession();
}
MimeMessage msg = new MimeMessage(session);
/**
* Parts are lazily created when an attachment performs a getHead
* call. Therefore, a null part at an index means that the head is
* required.
*/
MimeBodyPart[] parts = new MimeBodyPart[attachmentFormatters.length];
/**
* The buffers are lazily created when the part requires a getHead.
*/
StringBuilder[] buffers = new StringBuilder[parts.length];
StringBuilder buf = null;
final MimePart body;
if (parts.length == 0) {
msg.setDescription(descriptionFrom(
getFormatter(), getFilter(), subjectFormatter));
body = msg;
} else {
msg.setDescription(descriptionFrom(
comparator, pushLevel, pushFilter));
body = createBodyPart();
}
appendSubject(msg, head(subjectFormatter));
final Formatter bodyFormat = getFormatter();
final Filter bodyFilter = getFilter();
Locale lastLocale = null;
for (int ix = 0; ix < size; ++ix) {
boolean formatted = false;
final int match = matched[ix];
final LogRecord r = data[ix];
data[ix] = null; //Clear while formatting.
final Locale locale = localeFor(r);
appendSubject(msg, format(subjectFormatter, r));
Filter lmf = null; //Identity of last matched filter.
if (bodyFilter == null || match == -1 || parts.length == 0
|| (match < -1 && bodyFilter.isLoggable(r))) {
lmf = bodyFilter;
if (buf == null) {
buf = new StringBuilder();
buf.append(head(bodyFormat));
}
formatted = true;
buf.append(format(bodyFormat, r));
if (locale != null && !locale.equals(lastLocale)) {
appendContentLang(body, locale);
}
}
for (int i = 0; i < parts.length; ++i) {
//A match index less than the attachment index means that
//the filter has not seen this record.
final Filter af = attachmentFilters[i];
if (af == null || lmf == af || match == i
|| (match < i && af.isLoggable(r))) {
if (lmf == null && af != null) {
lmf = af;
}
if (parts[i] == null) {
parts[i] = createBodyPart(i);
buffers[i] = new StringBuilder();
buffers[i].append(head(attachmentFormatters[i]));
appendFileName(parts[i], head(attachmentNames[i]));
}
formatted = true;
appendFileName(parts[i], format(attachmentNames[i], r));
buffers[i].append(format(attachmentFormatters[i], r));
if (locale != null && !locale.equals(lastLocale)) {
appendContentLang(parts[i], locale);
}
}
}
if (formatted) {
if (body != msg && locale != null
&& !locale.equals(lastLocale)) {
appendContentLang(msg, locale);
}
} else { //Belongs to no mime part.
reportFilterError(r);
}
lastLocale = locale;
}
this.size = 0;
for (int i = parts.length - 1; i >= 0; --i) {
if (parts[i] != null) {
appendFileName(parts[i], tail(attachmentNames[i], "err"));
buffers[i].append(tail(attachmentFormatters[i], ""));
if (buffers[i].length() > 0) {
String name = parts[i].getFileName();
if (isEmpty(name)) { //Exceptional case.
name = toString(attachmentFormatters[i]);
parts[i].setFileName(name);
}
setContent(parts[i], buffers[i], getContentType(name));
} else {
setIncompleteCopy(msg);
parts[i] = null; //Skip this part.
}
buffers[i] = null;
}
}
if (buf != null) {
buf.append(tail(bodyFormat, ""));
//This body part is always added, even if the buffer is empty,
//so the body is never considered an incomplete-copy.
} else {
buf = new StringBuilder(0);
}
appendSubject(msg, tail(subjectFormatter, ""));
String contentType = contentTypeOf(buf);
String altType = contentTypeOf(bodyFormat);
setContent(body, buf, altType == null ? contentType : altType);
if (body != msg) {
final MimeMultipart multipart = new MimeMultipart();
//assert body instanceof BodyPart : body;
multipart.addBodyPart((BodyPart) body);
for (int i = 0; i < parts.length; ++i) {
if (parts[i] != null) {
multipart.addBodyPart(parts[i]);
}
}
msg.setContent(multipart);
}
return msg;
}
/**
* Checks all of the settings if the caller requests a verify and a verify
* was not performed yet and no verify is in progress. A verify is
* performed on create because this handler may be at the end of a handler
* chain and therefore may not see any log records until LogManager.reset()
* is called and at that time all of the settings have been cleared.
* @param session the current session or null.
* @since JavaMail 1.4.4
*/
private void verifySettings(final Session session) {
try {
if (session != null) {
final Properties props = session.getProperties();
final Object check = props.put("verify", "");
if (check instanceof String) {
String value = (String) check;
//Perform the verify if needed.
if (hasValue(value)) {
verifySettings0(session, value);
}
} else {
if (check != null) { //Pass some invalid string.
verifySettings0(session, check.getClass().toString());
}
}
}
} catch (final LinkageError JDK8152515) {
reportLinkageError(JDK8152515, ErrorManager.OPEN_FAILURE);
}
}
/**
* Checks all of the settings using the given setting.
* This triggers the LogManagerProperties to copy all of the mail
* settings without explictly knowing them. Once all of the properties
* are copied this handler can handle LogManager.reset clearing all of the
* properties. It is expected that this method is, at most, only called
* once per session.
* @param session the current session.
* @param verify the type of verify to perform.
* @since JavaMail 1.4.4
*/
private void verifySettings0(Session session, String verify) {
assert verify != null : (String) null;
if (!"local".equals(verify) && !"remote".equals(verify)
&& !"limited".equals(verify) && !"resolve".equals(verify)
&& !"login".equals(verify)) {
reportError("Verify must be 'limited', local', "
+ "'resolve', 'login', or 'remote'.",
new IllegalArgumentException(verify),
ErrorManager.OPEN_FAILURE);
return;
}
final MimeMessage abort = new MimeMessage(session);
final String msg;
if (!"limited".equals(verify)) {
msg = "Local address is "
+ InternetAddress.getLocalAddress(session) + '.';
try { //Verify subclass or declared mime charset.
Charset.forName(getEncodingName());
} catch (final RuntimeException RE) {
UnsupportedEncodingException UEE =
new UnsupportedEncodingException(RE.toString());
UEE.initCause(RE);
reportError(msg, UEE, ErrorManager.FORMAT_FAILURE);
}
} else {
msg = "Skipping local address check.";
}
//Perform all of the copy actions first.
String[] atn;
synchronized (this) { //Create the subject.
appendSubject(abort, head(subjectFormatter));
appendSubject(abort, tail(subjectFormatter, ""));
atn = new String[attachmentNames.length];
for (int i = 0; i < atn.length; ++i) {
atn[i] = head(attachmentNames[i]);
if (atn[i].length() == 0) {
atn[i] = tail(attachmentNames[i], "");
} else {
atn[i] = atn[i].concat(tail(attachmentNames[i], ""));
}
}
}
setIncompleteCopy(abort); //Original body part is never added.
envelopeFor(abort, true);
saveChangesNoContent(abort, msg);
try {
//Ensure transport provider is installed.
Address[] all = abort.getAllRecipients();
if (all == null) { //Don't pass null to sendMessage.
all = new InternetAddress[0];
}
Transport t;
try {
final Address[] any = all.length != 0 ? all : abort.getFrom();
if (any != null && any.length != 0) {
t = session.getTransport(any[0]);
session.getProperty("mail.transport.protocol"); //Force copy
} else {
MessagingException me = new MessagingException(
"No recipient or from address.");
reportError(msg, me, ErrorManager.OPEN_FAILURE);
throw me;
}
} catch (final MessagingException protocol) {
//Switching the CCL emulates the current send behavior.
Object ccl = getAndSetContextClassLoader(MAILHANDLER_LOADER);
try {
t = session.getTransport();
} catch (final MessagingException fail) {
throw attach(protocol, fail);
} finally {
getAndSetContextClassLoader(ccl);
}
}
String local = null;
if ("remote".equals(verify) || "login".equals(verify)) {
MessagingException closed = null;
t.connect();
try {
try {
//Capture localhost while connection is open.
local = getLocalHost(t);
//A message without content will fail at message writeTo
//when sendMessage is called. This allows the handler
//to capture all mail properties set in the LogManager.
if ("remote".equals(verify)) {
t.sendMessage(abort, all);
}
} finally {
try {
t.close();
} catch (final MessagingException ME) {
closed = ME;
}
}
//Close the transport before reporting errors.
if ("remote".equals(verify)) {
reportUnexpectedSend(abort, verify, null);
} else {
final String protocol = t.getURLName().getProtocol();
verifyProperties(session, protocol);
}
} catch (final SendFailedException sfe) {
Address[] recip = sfe.getInvalidAddresses();
if (recip != null && recip.length != 0) {
setErrorContent(abort, verify, sfe);
reportError(abort, sfe, ErrorManager.OPEN_FAILURE);
}
recip = sfe.getValidSentAddresses();
if (recip != null && recip.length != 0) {
reportUnexpectedSend(abort, verify, sfe);
}
} catch (final MessagingException ME) {
if (!isMissingContent(abort, ME)) {
setErrorContent(abort, verify, ME);
reportError(abort, ME, ErrorManager.OPEN_FAILURE);
}
}
if (closed != null) {
setErrorContent(abort, verify, closed);
reportError(abort, closed, ErrorManager.CLOSE_FAILURE);
}
} else {
//Force a property copy, JDK-7092981.
final String protocol = t.getURLName().getProtocol();
verifyProperties(session, protocol);
String mailHost = session.getProperty("mail."
+ protocol + ".host");
if (isEmpty(mailHost)) {
mailHost = session.getProperty("mail.host");
} else {
session.getProperty("mail.host");
}
local = session.getProperty("mail." + protocol + ".localhost");
if (isEmpty(local)) {
local = session.getProperty("mail."
+ protocol + ".localaddress");
} else {
session.getProperty("mail." + protocol + ".localaddress");
}
if ("resolve".equals(verify)) {
try { //Resolve the remote host name.
String transportHost = t.getURLName().getHost();
if (!isEmpty(transportHost)) {
verifyHost(transportHost);
if (!transportHost.equalsIgnoreCase(mailHost)) {
verifyHost(mailHost);
}
} else {
verifyHost(mailHost);
}
} catch (final RuntimeException | IOException IOE) {
MessagingException ME =
new MessagingException(msg, IOE);
setErrorContent(abort, verify, ME);
reportError(abort, ME, ErrorManager.OPEN_FAILURE);
}
}
}
if (!"limited".equals(verify)) {
try { //Verify host name and hit the host name cache.
if (!"remote".equals(verify) && !"login".equals(verify)) {
local = getLocalHost(t);
}
verifyHost(local);
} catch (final RuntimeException | IOException IOE) {
MessagingException ME = new MessagingException(msg, IOE);
setErrorContent(abort, verify, ME);
reportError(abort, ME, ErrorManager.OPEN_FAILURE);
}
try { //Verify that the DataHandler can be loaded.
Object ccl = getAndSetContextClassLoader(MAILHANDLER_LOADER);
try {
//Always load the multipart classes.
MimeMultipart multipart = new MimeMultipart();
MimeBodyPart[] ambp = new MimeBodyPart[atn.length];
final MimeBodyPart body;
final String bodyContentType;
synchronized (this) {
bodyContentType = contentTypeOf(getFormatter());
body = createBodyPart();
for (int i = 0; i < atn.length; ++i) {
ambp[i] = createBodyPart(i);
ambp[i].setFileName(atn[i]);
//Convert names to mime type under lock.
atn[i] = getContentType(atn[i]);
}
}
body.setDescription(verify);
setContent(body, "", bodyContentType);
multipart.addBodyPart(body);
for (int i = 0; i < ambp.length; ++i) {
ambp[i].setDescription(verify);
setContent(ambp[i], "", atn[i]);
}
abort.setContent(multipart);
abort.saveChanges();
abort.writeTo(new ByteArrayOutputStream(MIN_HEADER_SIZE));
} finally {
getAndSetContextClassLoader(ccl);
}
} catch (final IOException IOE) {
MessagingException ME = new MessagingException(msg, IOE);
setErrorContent(abort, verify, ME);
reportError(abort, ME, ErrorManager.FORMAT_FAILURE);
}
}
//Verify all recipients.
if (all.length != 0) {
verifyAddresses(all);
} else {
throw new MessagingException("No recipient addresses.");
}
//Verify from and sender addresses.
Address[] from = abort.getFrom();
Address sender = abort.getSender();
if (sender instanceof InternetAddress) {
((InternetAddress) sender).validate();
}
//If from address is declared then check sender.
if (abort.getHeader("From", ",") != null && from.length != 0) {
verifyAddresses(from);
for (int i = 0; i < from.length; ++i) {
if (from[i].equals(sender)) {
MessagingException ME = new MessagingException(
"Sender address '" + sender
+ "' equals from address.");
throw new MessagingException(msg, ME);
}
}
} else {
if (sender == null) {
MessagingException ME = new MessagingException(
"No from or sender address.");
throw new MessagingException(msg, ME);
}
}
//Verify reply-to addresses.
verifyAddresses(abort.getReplyTo());
} catch (final RuntimeException RE) {
setErrorContent(abort, verify, RE);
reportError(abort, RE, ErrorManager.OPEN_FAILURE);
} catch (final Exception ME) {
setErrorContent(abort, verify, ME);
reportError(abort, ME, ErrorManager.OPEN_FAILURE);
}
}
/**
* Handles all exceptions thrown when save changes is called on a message
* that doesn't have any content.
*
* @param abort the message requiring save changes.
* @param msg the error description.
* @since JavaMail 1.6.0
*/
private void saveChangesNoContent(final Message abort, final String msg) {
if (abort != null) {
try {
try {
abort.saveChanges();
} catch (final NullPointerException xferEncoding) {
//Workaround GNU JavaMail bug in MimeUtility.getEncoding
//when the mime message has no content.
try {
String cte = "Content-Transfer-Encoding";
if (abort.getHeader(cte) == null) {
abort.setHeader(cte, EncoderTypes.BASE_64.getEncoder());
abort.saveChanges();
} else {
throw xferEncoding;
}
} catch (RuntimeException | MessagingException e) {
if (e != xferEncoding) {
e.addSuppressed(xferEncoding);
}
throw e;
}
}
} catch (RuntimeException | MessagingException ME) {
reportError(msg, ME, ErrorManager.FORMAT_FAILURE);
}
}
}
/**
* Cache common session properties into the LogManagerProperties. This is
* a workaround for JDK-7092981.
*
* @param session the session.
* @param protocol the mail protocol.
* @throws NullPointerException if session is null.
* @since JavaMail 1.6.0
*/
private static void verifyProperties(Session session, String protocol) {
session.getProperty("mail.from");
session.getProperty("mail." + protocol + ".from");
session.getProperty("mail.dsn.ret");
session.getProperty("mail." + protocol + ".dsn.ret");
session.getProperty("mail.dsn.notify");
session.getProperty("mail." + protocol + ".dsn.notify");
session.getProperty("mail." + protocol + ".port");
session.getProperty("mail.user");
session.getProperty("mail." + protocol + ".user");
session.getProperty("mail." + protocol + ".localport");
}
/**
* Perform a lookup of the host address or FQDN.
* @param host the host or null.
* @return the address.
* @throws IOException if the host name is not valid.
* @throws SecurityException if security manager is present and doesn't
* allow access to check connect permission.
* @since JavaMail 1.5.0
*/
private static InetAddress verifyHost(String host) throws IOException {
InetAddress a;
if (isEmpty(host)) {
a = InetAddress.getLocalHost();
} else {
a = InetAddress.getByName(host);
}
if (a.getCanonicalHostName().length() == 0) {
throw new UnknownHostException();
}
return a;
}
/**
* Calls validate for every address given.
* If the addresses given are null, empty or not an InternetAddress then
* the check is skipped.
* @param all any address array, null or empty.
* @throws AddressException if there is a problem.
* @since JavaMail 1.4.5
*/
private static void verifyAddresses(Address[] all) throws AddressException {
if (all != null) {
for (int i = 0; i < all.length; ++i) {
final Address a = all[i];
if (a instanceof InternetAddress) {
((InternetAddress) a).validate();
}
}
}
}
/**
* Reports that an empty content message was sent and should not have been.
* @param msg the MimeMessage.
* @param verify the verify enum.
* @param cause the exception that caused the problem or null.
* @since JavaMail 1.4.5
*/
private void reportUnexpectedSend(MimeMessage msg, String verify, Exception cause) {
final MessagingException write = new MessagingException(
"An empty message was sent.", cause);
setErrorContent(msg, verify, write);
reportError(msg, write, ErrorManager.OPEN_FAILURE);
}
/**
* Creates and sets the message content from the given Throwable.
* When verify fails, this method fixes the 'abort' message so that any
* created envelope data can be used in the error manager.
* @param msg the message with or without content.
* @param verify the verify enum.
* @param t the throwable or null.
* @since JavaMail 1.4.5
*/
private void setErrorContent(MimeMessage msg, String verify, Throwable t) {
try { //Add content so toRawString doesn't fail.
final MimeBodyPart body;
final String subjectType;
final String msgDesc;
synchronized (this) {
body = createBodyPart();
msgDesc = descriptionFrom(comparator, pushLevel, pushFilter);
subjectType = getClassId(subjectFormatter);
}
body.setDescription("Formatted using "
+ (t == null ? Throwable.class.getName()
: t.getClass().getName()) + ", filtered with "
+ verify + ", and named by "
+ subjectType + '.');
setContent(body, toMsgString(t), "text/plain");
final MimeMultipart multipart = new MimeMultipart();
multipart.addBodyPart(body);
msg.setContent(multipart);
msg.setDescription(msgDesc);
setAcceptLang(msg);
msg.saveChanges();
} catch (MessagingException | RuntimeException ME) {
reportError("Unable to create body.", ME, ErrorManager.OPEN_FAILURE);
}
}
/**
* Used to update the cached session object based on changes in
* mail properties or authenticator.
* @return the current session or null if no verify is required.
*/
private Session updateSession() {
assert Thread.holdsLock(this);
final Session settings;
if (mailProps.getProperty("verify") != null) {
settings = initSession();
assert settings == session : session;
} else {
session = null; //Remove old session.
settings = null;
}
return settings;
}
/**
* Creates a session using a proxy properties object.
* @return the session that was created and assigned.
*/
private Session initSession() {
assert Thread.holdsLock(this);
final String p = getClass().getName();
LogManagerProperties proxy = new LogManagerProperties(mailProps, p);
session = Session.getInstance(proxy, auth);
return session;
}
/**
* Creates all of the envelope information for a message.
* This method is safe to call outside of a lock because the message
* provides the safe snapshot of the mail properties.
* @param msg the Message to write the envelope information.
* @param priority true for high priority.
*/
private void envelopeFor(Message msg, boolean priority) {
setAcceptLang(msg);
setFrom(msg);
if (!setRecipient(msg, "mail.to", Message.RecipientType.TO)) {
setDefaultRecipient(msg, Message.RecipientType.TO);
}
setRecipient(msg, "mail.cc", Message.RecipientType.CC);
setRecipient(msg, "mail.bcc", Message.RecipientType.BCC);
setReplyTo(msg);
setSender(msg);
setMailer(msg);
setAutoSubmitted(msg);
if (priority) {
setPriority(msg);
}
try {
msg.setSentDate(new java.util.Date());
} catch (final MessagingException ME) {
reportError(ME.getMessage(), ME, ErrorManager.FORMAT_FAILURE);
}
}
/**
* Factory to create the in-line body part.
* @return a body part with default headers set.
* @throws MessagingException if there is a problem.
*/
private MimeBodyPart createBodyPart() throws MessagingException {
assert Thread.holdsLock(this);
final MimeBodyPart part = new MimeBodyPart();
part.setDisposition(Part.INLINE);
part.setDescription(descriptionFrom(getFormatter(),
getFilter(), subjectFormatter));
setAcceptLang(part);
return part;
}
/**
* Factory to create the attachment body part.
* @param index the attachment index.
* @return a body part with default headers set.
* @throws MessagingException if there is a problem.
* @throws IndexOutOfBoundsException if the given index is not an valid
* attachment index.
*/
private MimeBodyPart createBodyPart(int index) throws MessagingException {
assert Thread.holdsLock(this);
final MimeBodyPart part = new MimeBodyPart();
part.setDisposition(Part.ATTACHMENT);
part.setDescription(descriptionFrom(
attachmentFormatters[index],
attachmentFilters[index],
attachmentNames[index]));
setAcceptLang(part);
return part;
}
/**
* Gets the description for the MimeMessage itself.
* The push level and filter are included because they play a role in
* formatting of a message when triggered or not triggered.
* @param c the comparator.
* @param l the pushLevel.
* @param f the pushFilter
* @return the description.
* @throws NullPointerException if level is null.
* @since JavaMail 1.4.5
*/
private String descriptionFrom(Comparator c, Level l, Filter f) {
return "Sorted using "+ (c == null ? "no comparator"
: c.getClass().getName()) + ", pushed when "+ l.getName()
+ ", and " + (f == null ? "no push filter"
: f.getClass().getName()) + '.';
}
/**
* Creates a description for a body part.
* @param f the content formatter.
* @param filter the content filter.
* @param name the naming formatter.
* @return the description for the body part.
*/
private String descriptionFrom(Formatter f, Filter filter, Formatter name) {
return "Formatted using " + getClassId(f)
+ ", filtered with " + (filter == null ? "no filter"
: filter.getClass().getName()) +", and named by "
+ getClassId(name) + '.';
}
/**
* Gets a class name represents the behavior of the formatter.
* The class name may not be assignable to a Formatter.
* @param f the formatter.
* @return a class name that represents the given formatter.
* @throws NullPointerException if the parameter is null.
* @since JavaMail 1.4.5
*/
private String getClassId(final Formatter f) {
if (f instanceof TailNameFormatter) {
return String.class.getName(); //Literal string.
} else {
return f.getClass().getName();
}
}
/**
* Ensure that a formatter creates a valid string for a part name.
* @param f the formatter.
* @return the to string value or the class name.
*/
private String toString(final Formatter f) {
//Should never be null but, guard against formatter bugs.
final String name = f.toString();
if (!isEmpty(name)) {
return name;
} else {
return getClassId(f);
}
}
/**
* Constructs a file name from a formatter. This method is called often
* but, rarely does any work.
* @param part to append to.
* @param chunk non null string to append.
*/
private void appendFileName(final Part part, final String chunk) {
if (chunk != null) {
if (chunk.length() > 0) {
appendFileName0(part, chunk);
}
} else {
reportNullError(ErrorManager.FORMAT_FAILURE);
}
}
/**
* It is assumed that file names are short and that in most cases
* getTail will be the only method that will produce a result.
* @param part to append to.
* @param chunk non null string to append.
*/
private void appendFileName0(final Part part, String chunk) {
try {
//Remove all control character groups.
chunk = chunk.replaceAll("[\\x00-\\x1F\\x7F]+", "");
final String old = part.getFileName();
part.setFileName(old != null ? old.concat(chunk) : chunk);
} catch (final MessagingException ME) {
reportError(ME.getMessage(), ME, ErrorManager.FORMAT_FAILURE);
}
}
/**
* Constructs a subject line from a formatter.
* @param msg to append to.
* @param chunk non null string to append.
*/
private void appendSubject(final Message msg, final String chunk) {
if (chunk != null) {
if (chunk.length() > 0) {
appendSubject0(msg, chunk);
}
} else {
reportNullError(ErrorManager.FORMAT_FAILURE);
}
}
/**
* It is assumed that subject lines are short and that in most cases
* getTail will be the only method that will produce a result.
* @param msg to append to.
* @param chunk non null string to append.
*/
private void appendSubject0(final Message msg, String chunk) {
try {
//Remove all control character groups.
chunk = chunk.replaceAll("[\\x00-\\x1F\\x7F]+", "");
final String charset = getEncodingName();
final String old = msg.getSubject();
assert msg instanceof MimeMessage : msg;
((MimeMessage) msg).setSubject(old != null ? old.concat(chunk)
: chunk, MimeUtility.mimeCharset(charset));
} catch (final MessagingException ME) {
reportError(ME.getMessage(), ME, ErrorManager.FORMAT_FAILURE);
}
}
/**
* Gets the locale for the given log record from the resource bundle.
* If the resource bundle is using the root locale then the default locale
* is returned.
* @param r the log record.
* @return null if not localized otherwise, the locale of the record.
* @since JavaMail 1.4.5
*/
private Locale localeFor(final LogRecord r) {
Locale l;
final ResourceBundle rb = r.getResourceBundle();
if (rb != null) {
l = rb.getLocale();
if (l == null || isEmpty(l.getLanguage())) {
//The language of the fallback bundle (root) is unknown.
//1. Use default locale. Should only be wrong if the app is
// used with a langauge that was unintended. (unlikely)
//2. Mark it as not localized (force null, info loss).
//3. Use the bundle name (encoded) as an experimental language.
l = Locale.getDefault();
}
} else {
l = null;
}
return l;
}
/**
* Appends the content language to the given mime part.
* The language tag is only appended if the given language has not been
* specified. This method is only used when we have LogRecords that are
* localized with an assigned resource bundle.
* @param p the mime part.
* @param l the locale to append.
* @throws NullPointerException if any argument is null.
* @since JavaMail 1.4.5
*/
private void appendContentLang(final MimePart p, final Locale l) {
try {
String lang = LogManagerProperties.toLanguageTag(l);
if (lang.length() != 0) {
String header = p.getHeader("Content-Language", null);
if (isEmpty(header)) {
p.setHeader("Content-Language", lang);
} else if (!header.equalsIgnoreCase(lang)) {
lang = ",".concat(lang);
int idx = 0;
while ((idx = header.indexOf(lang, idx)) > -1) {
idx += lang.length();
if (idx == header.length()
|| header.charAt(idx) == ',') {
break;
}
}
if (idx < 0) {
int len = header.lastIndexOf("\r\n\t");
if (len < 0) { //If not folded.
len = (18 + 2) + header.length();
} else {
len = (header.length() - len) + 8;
}
//Perform folding of header if needed.
if ((len + lang.length()) > 76) {
header = header.concat("\r\n\t".concat(lang));
} else {
header = header.concat(lang);
}
p.setHeader("Content-Language", header);
}
}
}
} catch (final MessagingException ME) {
reportError(ME.getMessage(), ME, ErrorManager.FORMAT_FAILURE);
}
}
/**
* Sets the accept language to the default locale of the JVM.
* If the locale is the root locale the header is not added.
* @param p the part to set.
* @since JavaMail 1.4.5
*/
private void setAcceptLang(final Part p) {
try {
final String lang = LogManagerProperties
.toLanguageTag(Locale.getDefault());
if (lang.length() != 0) {
p.setHeader("Accept-Language", lang);
}
} catch (final MessagingException ME) {
reportError(ME.getMessage(), ME, ErrorManager.FORMAT_FAILURE);
}
}
/**
* Used when a log record was loggable prior to being inserted
* into the buffer but at the time of formatting was no longer loggable.
* Filters were changed after publish but prior to a push or a bug in the
* body filter or one of the attachment filters.
* @param record that was not formatted.
* @since JavaMail 1.4.5
*/
private void reportFilterError(final LogRecord record) {
assert Thread.holdsLock(this);
final Formatter f = createSimpleFormatter();
final String msg = "Log record " + record.getSequenceNumber()
+ " was filtered from all message parts. "
+ head(f) + format(f, record) + tail(f, "");
final String txt = getFilter() + ", "
+ Arrays.asList(readOnlyAttachmentFilters());
reportError(msg, new IllegalArgumentException(txt),
ErrorManager.FORMAT_FAILURE);
}
/**
* Reports symmetric contract violations an equals implementation.
* @param o the test object must be non null.
* @param found the possible intern, must be non null.
* @throws NullPointerException if any argument is null.
* @since JavaMail 1.5.0
*/
private void reportNonSymmetric(final Object o, final Object found) {
reportError("Non symmetric equals implementation."
, new IllegalArgumentException(o.getClass().getName()
+ " is not equal to " + found.getClass().getName())
, ErrorManager.OPEN_FAILURE);
}
/**
* Reports equals implementations that do not discriminate between objects
* of different types or subclass types.
* @param o the test object must be non null.
* @param found the possible intern, must be non null.
* @throws NullPointerException if any argument is null.
* @since JavaMail 1.5.0
*/
private void reportNonDiscriminating(final Object o, final Object found) {
reportError("Non discriminating equals implementation."
, new IllegalArgumentException(o.getClass().getName()
+ " should not be equal to " + found.getClass().getName())
, ErrorManager.OPEN_FAILURE);
}
/**
* Used to outline the bytes to report a null pointer exception.
* See BUD ID 6533165.
* @param code the ErrorManager code.
*/
private void reportNullError(final int code) {
reportError("null", new NullPointerException(), code);
}
/**
* Creates the head or reports a formatting error.
* @param f the formatter.
* @return the head string or an empty string.
*/
private String head(final Formatter f) {
try {
return f.getHead(this);
} catch (final RuntimeException RE) {
reportError(RE.getMessage(), RE, ErrorManager.FORMAT_FAILURE);
return "";
}
}
/**
* Creates the formatted log record or reports a formatting error.
* @param f the formatter.
* @param r the log record.
* @return the formatted string or an empty string.
*/
private String format(final Formatter f, final LogRecord r) {
try {
return f.format(r);
} catch (final RuntimeException RE) {
reportError(RE.getMessage(), RE, ErrorManager.FORMAT_FAILURE);
return "";
}
}
/**
* Creates the tail or reports a formatting error.
* @param f the formatter.
* @param def the default string to use when there is an error.
* @return the tail string or the given default string.
*/
private String tail(final Formatter f, final String def) {
try {
return f.getTail(this);
} catch (final RuntimeException RE) {
reportError(RE.getMessage(), RE, ErrorManager.FORMAT_FAILURE);
return def;
}
}
/**
* Sets the x-mailer header.
* @param msg the target message.
*/
private void setMailer(final Message msg) {
try {
final Class mail = MailHandler.class;
final Class k = getClass();
String value;
if (k == mail) {
value = mail.getName();
} else {
try {
value = MimeUtility.encodeText(k.getName());
} catch (final UnsupportedEncodingException E) {
reportError(E.getMessage(), E, ErrorManager.FORMAT_FAILURE);
value = k.getName().replaceAll("[^\\x00-\\x7F]", "\uu001A");
}
value = MimeUtility.fold(10, mail.getName() + " using the "
+ value + " extension.");
}
msg.setHeader("X-Mailer", value);
} catch (final MessagingException ME) {
reportError(ME.getMessage(), ME, ErrorManager.FORMAT_FAILURE);
}
}
/**
* Sets the priority and importance headers.
* @param msg the target message.
*/
private void setPriority(final Message msg) {
try {
msg.setHeader("Importance", "High");
msg.setHeader("Priority", "urgent");
msg.setHeader("X-Priority", "2"); //High
} catch (final MessagingException ME) {
reportError(ME.getMessage(), ME, ErrorManager.FORMAT_FAILURE);
}
}
/**
* Used to signal that body parts are missing from a message. Also used
* when LogRecords were passed to an attachment formatter but the formatter
* produced no output, which is allowed. Used during a verify because all
* parts are omitted, none of the content formatters are used. This is
* not used when a filter prevents LogRecords from being formatted.
* This header is defined in RFC 2156 and RFC 4021.
* @param msg the message.
* @since JavaMail 1.4.5
*/
private void setIncompleteCopy(final Message msg) {
try {
msg.setHeader("Incomplete-Copy", "");
} catch (final MessagingException ME) {
reportError(ME.getMessage(), ME, ErrorManager.FORMAT_FAILURE);
}
}
/**
* Signals that this message was generated by automatic process.
* This header is defined in RFC 3834 section 5.
* @param msg the message.
* @since JavaMail 1.4.6
*/
private void setAutoSubmitted(final Message msg) {
if (allowRestrictedHeaders()) {
try { //RFC 3834 (5.2)
msg.setHeader("auto-submitted", "auto-generated");
} catch (final MessagingException ME) {
reportError(ME.getMessage(), ME, ErrorManager.FORMAT_FAILURE);
}
}
}
/**
* Sets from address header.
* @param msg the target message.
*/
private void setFrom(final Message msg) {
final String from = getSession(msg).getProperty("mail.from");
if (from != null) {
try {
final Address[] address = InternetAddress.parse(from, false);
if (address.length > 0) {
if (address.length == 1) {
msg.setFrom(address[0]);
} else { //Greater than 1 address.
msg.addFrom(address);
}
}
//Can't place an else statement here because the 'from' is
//not null which causes the local address computation
//to fail. Assume the user wants to omit the from address
//header.
} catch (final MessagingException ME) {
reportError(ME.getMessage(), ME, ErrorManager.FORMAT_FAILURE);
setDefaultFrom(msg);
}
} else {
setDefaultFrom(msg);
}
}
/**
* Sets the from header to the local address.
* @param msg the target message.
*/
private void setDefaultFrom(final Message msg) {
try {
msg.setFrom();
} catch (final MessagingException ME) {
reportError(ME.getMessage(), ME, ErrorManager.FORMAT_FAILURE);
}
}
/**
* Computes the default to-address if none was specified. This can
* fail if the local address can't be computed.
* @param msg the message
* @param type the recipient type.
* @since JavaMail 1.5.0
*/
private void setDefaultRecipient(final Message msg,
final Message.RecipientType type) {
try {
Address a = InternetAddress.getLocalAddress(getSession(msg));
if (a != null) {
msg.setRecipient(type, a);
} else {
final MimeMessage m = new MimeMessage(getSession(msg));
m.setFrom(); //Should throw an exception with a cause.
Address[] from = m.getFrom();
if (from.length > 0) {
msg.setRecipients(type, from);
} else {
throw new MessagingException("No local address.");
}
}
} catch (MessagingException | RuntimeException ME) {
reportError("Unable to compute a default recipient.",
ME, ErrorManager.FORMAT_FAILURE);
}
}
/**
* Sets reply-to address header.
* @param msg the target message.
*/
private void setReplyTo(final Message msg) {
final String reply = getSession(msg).getProperty("mail.reply.to");
if (!isEmpty(reply)) {
try {
final Address[] address = InternetAddress.parse(reply, false);
if (address.length > 0) {
msg.setReplyTo(address);
}
} catch (final MessagingException ME) {
reportError(ME.getMessage(), ME, ErrorManager.FORMAT_FAILURE);
}
}
}
/**
* Sets sender address header.
* @param msg the target message.
*/
private void setSender(final Message msg) {
assert msg instanceof MimeMessage : msg;
final String sender = getSession(msg).getProperty("mail.sender");
if (!isEmpty(sender)) {
try {
final InternetAddress[] address =
InternetAddress.parse(sender, false);
if (address.length > 0) {
((MimeMessage) msg).setSender(address[0]);
if (address.length > 1) {
reportError("Ignoring other senders.",
tooManyAddresses(address, 1),
ErrorManager.FORMAT_FAILURE);
}
}
} catch (final MessagingException ME) {
reportError(ME.getMessage(), ME, ErrorManager.FORMAT_FAILURE);
}
}
}
/**
* A common factory used to create the too many addresses exception.
* @param address the addresses, never null.
* @param offset the starting address to display.
* @return the too many addresses exception.
*/
private AddressException tooManyAddresses(Address[] address, int offset) {
Object l = Arrays.asList(address).subList(offset, address.length);
return new AddressException(l.toString());
}
/**
* Sets the recipient for the given message.
* @param msg the message.
* @param key the key to search in the session.
* @param type the recipient type.
* @return true if the key was contained in the session.
*/
private boolean setRecipient(final Message msg,
final String key, final Message.RecipientType type) {
boolean containsKey;
final String value = getSession(msg).getProperty(key);
containsKey = value != null;
if (!isEmpty(value)) {
try {
final Address[] address = InternetAddress.parse(value, false);
if (address.length > 0) {
msg.setRecipients(type, address);
}
} catch (final MessagingException ME) {
reportError(ME.getMessage(), ME, ErrorManager.FORMAT_FAILURE);
}
}
return containsKey;
}
/**
* Converts an email message to a raw string. This raw string
* is passed to the error manager to allow custom error managers
* to recreate the original MimeMessage object.
* @param msg a Message object.
* @return the raw string or null if msg was null.
* @throws MessagingException if there was a problem with the message.
* @throws IOException if there was a problem.
*/
private String toRawString(final Message msg) throws MessagingException, IOException {
if (msg != null) {
Object ccl = getAndSetContextClassLoader(MAILHANDLER_LOADER);
try { //JDK-8025251
int nbytes = Math.max(msg.getSize() + MIN_HEADER_SIZE, MIN_HEADER_SIZE);
ByteArrayOutputStream out = new ByteArrayOutputStream(nbytes);
msg.writeTo(out); //Headers can be UTF-8 or US-ASCII.
return out.toString("UTF-8");
} finally {
getAndSetContextClassLoader(ccl);
}
} else { //Must match this.reportError behavior, see push method.
return null; //Null is the safe choice.
}
}
/**
* Converts a throwable to a message string.
* @param t any throwable or null.
* @return the throwable with a stack trace or the literal null.
*/
private String toMsgString(final Throwable t) {
if (t == null) {
return "null";
}
final String charset = getEncodingName();
try {
final ByteArrayOutputStream out =
new ByteArrayOutputStream(MIN_HEADER_SIZE);
//Create an output stream writer so streams are not double buffered.
try (OutputStreamWriter ows = new OutputStreamWriter(out, charset);
PrintWriter pw = new PrintWriter(ows)) {
pw.println(t.getMessage());
t.printStackTrace(pw);
pw.flush();
} //Close OSW before generating string. JDK-6995537
return out.toString(charset);
} catch (final RuntimeException unexpected) {
return t.toString() + ' ' + unexpected.toString();
} catch (final Exception badMimeCharset) {
return t.toString() + ' ' + badMimeCharset.toString();
}
}
/**
* Replaces the current context class loader with our class loader.
* @param ccl null for boot class loader, a class loader, a class used to
* get the class loader, or a source object to get the class loader.
* @return null for the boot class loader, a class loader, or a marker
* object to signal that no modification was required.
* @since JavaMail 1.5.3
*/
private Object getAndSetContextClassLoader(final Object ccl) {
if (ccl != GetAndSetContext.NOT_MODIFIED) {
try {
final PrivilegedAction pa;
if (ccl instanceof PrivilegedAction) {
pa = (PrivilegedAction) ccl;
} else {
pa = new GetAndSetContext(ccl);
}
return AccessController.doPrivileged(pa);
} catch (final SecurityException ignore) {
}
}
return GetAndSetContext.NOT_MODIFIED;
}
/**
* A factory used to create a common attachment mismatch type.
* @param msg the exception message.
* @return a RuntimeException to represent the type of error.
*/
private static RuntimeException attachmentMismatch(final String msg) {
return new IndexOutOfBoundsException(msg);
}
/**
* Outline the attachment mismatch message. See Bug ID 6533165.
* @param expected the expected array length.
* @param found the array length that was given.
* @return a RuntimeException populated with a message.
*/
private static RuntimeException attachmentMismatch(int expected, int found) {
return attachmentMismatch("Attachments mismatched, expected "
+ expected + " but given " + found + '.');
}
/**
* Try to attach a suppressed exception to a MessagingException in any order
* that is possible.
* @param required the exception expected to see as a reported failure.
* @param optional the suppressed exception.
* @return either the required or the optional exception.
*/
private static MessagingException attach(
MessagingException required, Exception optional) {
if (optional != null && !required.setNextException(optional)) {
if (optional instanceof MessagingException) {
final MessagingException head = (MessagingException) optional;
if (head.setNextException(required)) {
return head;
}
}
if (optional != required) {
required.addSuppressed(optional);
}
}
return required;
}
/**
* Gets the local host from the given service object.
* @param s the service to check.
* @return the local host or null.
* @since JavaMail 1.5.3
*/
private String getLocalHost(final Service s) {
try {
return LogManagerProperties.getLocalHost(s);
} catch (SecurityException | NoSuchMethodException
| LinkageError ignore) {
} catch (final Exception ex) {
reportError(s.toString(), ex, ErrorManager.OPEN_FAILURE);
}
return null;
}
/**
* Google App Engine doesn't support Message.getSession.
* @param msg the message.
* @return the session from the given message.
* @throws NullPointerException if the given message is null.
* @since JavaMail 1.5.3
*/
private Session getSession(final Message msg) {
if (msg == null) {
throw new NullPointerException();
}
return new MessageContext(msg).getSession();
}
/**
* Determines if restricted headers are allowed in the current environment.
*
* @return true if restricted headers are allowed.
* @since JavaMail 1.5.3
*/
private boolean allowRestrictedHeaders() {
//GAE will prevent delivery of email with forbidden headers.
//Assume the environment is GAE if access to the LogManager is
//forbidden.
return LogManagerProperties.hasLogManager();
}
/**
* Outline the creation of the index error message. See JDK-6533165.
* @param i the index.
* @return the error message.
*/
private static String atIndexMsg(final int i) {
return "At index: " + i + '.';
}
/**
* Used for storing a password from the LogManager or literal string.
* @since JavaMail 1.4.6
*/
private static final class DefaultAuthenticator extends Authenticator {
/**
* Creates an Authenticator for the given password. This method is used
* so class verification of assignments in MailHandler doesn't require
* loading this class which otherwise can occur when using the
* constructor. Default access to avoid generating extra class files.
*
* @param pass the password.
* @return an Authenticator for the password.
* @since JavaMail 1.5.6
*/
static Authenticator of(final String pass) {
return new DefaultAuthenticator(pass);
}
/**
* The password to use.
*/
private final String pass;
/**
* Use the factory method instead of this constructor.
* @param pass the password.
*/
private DefaultAuthenticator(final String pass) {
assert pass != null;
this.pass = pass;
}
@Override
protected final PasswordAuthentication getPasswordAuthentication() {
return new PasswordAuthentication(getDefaultUserName(), pass);
}
}
/**
* Performs a get and set of the context class loader with privileges
* enabled.
* @since JavaMail 1.4.6
*/
private static final class GetAndSetContext implements PrivilegedAction {
/**
* A marker object used to signal that the class loader was not
* modified.
*/
public static final Object NOT_MODIFIED = GetAndSetContext.class;
/**
* The source containing the class loader.
*/
private final Object source;
/**
* Create the action.
* @param source null for boot class loader, a class loader, a class
* used to get the class loader, or a source object to get the class
* loader. Default access to avoid generating extra class files.
*/
GetAndSetContext(final Object source) {
this.source = source;
}
/**
* Gets the class loader from the source and sets the CCL only if
* the source and CCL are not the same.
* @return the replaced context class loader which can be null or
* NOT_MODIFIED to indicate that nothing was modified.
*/
@SuppressWarnings("override") //JDK-6954234
public final Object run() {
final Thread current = Thread.currentThread();
final ClassLoader ccl = current.getContextClassLoader();
final ClassLoader loader;
if (source == null) {
loader = null; //boot class loader
} else if (source instanceof ClassLoader) {
loader = (ClassLoader) source;
} else if (source instanceof Class) {
loader = ((Class) source).getClassLoader();
} else if (source instanceof Thread) {
loader = ((Thread) source).getContextClassLoader();
} else {
assert !(source instanceof Class) : source;
loader = source.getClass().getClassLoader();
}
if (ccl != loader) {
current.setContextClassLoader(loader);
return ccl;
} else {
return NOT_MODIFIED;
}
}
}
/**
* Used for naming attachment file names and the main subject line.
*/
private static final class TailNameFormatter extends Formatter {
/**
* Creates or gets a formatter from the given name. This method is used
* so class verification of assignments in MailHandler doesn't require
* loading this class which otherwise can occur when using the
* constructor. Default access to avoid generating extra class files.
*
* @param name any not null string.
* @return a formatter for that string.
* @since JavaMail 1.5.6
*/
static Formatter of(final String name) {
return new TailNameFormatter(name);
}
/**
* The value used as the output.
*/
private final String name;
/**
* Use the factory method instead of this constructor.
* @param name any not null string.
*/
private TailNameFormatter(final String name) {
assert name != null;
this.name = name;
}
@Override
public final String format(LogRecord record) {
return "";
}
@Override
public final String getTail(Handler h) {
return name;
}
/**
* Equals method.
* @param o the other object.
* @return true if equal
* @since JavaMail 1.4.4
*/
@Override
public final boolean equals(Object o) {
if (o instanceof TailNameFormatter) {
return name.equals(((TailNameFormatter) o).name);
}
return false;
}
/**
* Hash code method.
* @return the hash code.
* @since JavaMail 1.4.4
*/
@Override
public final int hashCode() {
return getClass().hashCode() + name.hashCode();
}
@Override
public final String toString() {
return name;
}
}
}
