Package org.apache.commons.net.pop3
Class POP3SClient
java.lang.Object
org.apache.commons.net.SocketClient
org.apache.commons.net.pop3.POP3
org.apache.commons.net.pop3.POP3Client
org.apache.commons.net.pop3.POP3SClient
- Direct Known Subclasses:
ExtendedPOP3Client
POP3 over SSL processing. Copied from FTPSClient.java and modified to suit POP3. If implicit mode is selected (NOT the default), SSL/TLS negotiation starts
right after the connection has been established. In explicit mode (the default), SSL/TLS negotiation starts when the user calls execTLS() and the server
accepts the command. Implicit usage: POP3SClient c = new POP3SClient(true); c.connect("127.0.0.1", 995); Explicit usage: POP3SClient c = new POP3SClient();
c.connect("127.0.0.1", 110); if (c.execTLS()) { /rest of the commands here/ }
Warning: the hostname is not verified against the certificate by default, use
setHostnameVerifier(HostnameVerifier)
or
setEndpointCheckingEnabled(boolean)
(on Java 1.7+) to enable verification.- Since:
- 3.0
-
Field Summary
FieldsModifier and TypeFieldDescriptionprivate SSLContext
The context object.private static final int
private static final String
Default secure socket protocol name, like TLSprivate HostnameVerifier
TheHostnameVerifier
to use post-TLS, default null (i.e.private final boolean
The security mode.private KeyManager
TheKeyManager
, default null.private final String
The secure socket protocol to be used, like SSL/TLS.private String[]
The protocol versions.private String[]
The cipher suites.private boolean
Use Java 1.7+ HTTPS Endpoint Identification Algorithim.private TrustManager
The FTPSTrustManager
implementation, default null.Fields inherited from class org.apache.commons.net.pop3.POP3
_commandSupport_, AUTHORIZATION_STATE, DEFAULT_ENCODING, DEFAULT_PORT, DISCONNECTED_STATE, ERROR, lastReplyLine, OK, OK_INT, reader, replyCode, replyLines, TRANSACTION_STATE, UPDATE_STATE, writer
Fields inherited from class org.apache.commons.net.SocketClient
_defaultPort_, _hostname_, _input_, _output_, _serverSocketFactory_, _socket_, _socketFactory_, _timeout_, connectTimeout, NETASCII_EOL
-
Constructor Summary
ConstructorsConstructorDescriptionConstructor for POP3SClient, usingDEFAULT_PROTOCOL
i.e.POP3SClient
(boolean implicit) Constructor for POP3SClient, usingDEFAULT_PROTOCOL
i.e.POP3SClient
(boolean implicit, SSLContext ctx) Constructor for POP3SClient, usingDEFAULT_PROTOCOL
i.e.POP3SClient
(String proto) Constructor for POP3SClient.POP3SClient
(String proto, boolean implicit) Constructor for POP3SClient.POP3SClient
(String proto, boolean implicit, SSLContext ctx) Constructor for POP3SClient.POP3SClient
(SSLContext context) Constructor for POP3SClient, usingDEFAULT_PROTOCOL
- TLS - and isImplicit = false -
Method Summary
Modifier and TypeMethodDescriptionprotected void
Because there are so many connect() methods, the _connectAction_() method is provided as a means of performing some action immediately after establishing a connection, rather than reimplementing all of the connect() methods.boolean
execTLS()
The TLS command execution.String[]
Returns the names of the cipher suites which could be enabled for use on this connection.String[]
Returns the names of the protocol versions which are currently enabled for use on this connection.Get the currently configuredHostnameVerifier
.private KeyManager
Get theKeyManager
instance.Get the currently configuredTrustManager
.private void
Performs a lazy init of the SSL context.boolean
Return whether or not endpoint identification using the HTTPS algorithm on Java 1.7+ is enabled.private void
SSL/TLS negotiation.void
setEnabledCipherSuites
(String[] cipherSuites) Controls which particular cipher suites are enabled for use on this connection.void
setEnabledProtocols
(String[] protocolVersions) Controls which particular protocol versions are enabled for use on this connection.void
setEndpointCheckingEnabled
(boolean enable) Automatic endpoint identification checking using the HTTPS algorithm is supported on Java 1.7+.void
setHostnameVerifier
(HostnameVerifier newHostnameVerifier) Override the defaultHostnameVerifier
to use.void
setKeyManager
(KeyManager newKeyManager) Set aKeyManager
to use.void
setTrustManager
(TrustManager newTrustManager) Override the defaultTrustManager
to use.Methods inherited from class org.apache.commons.net.pop3.POP3Client
capa, deleteMessage, listMessage, listMessages, listUniqueIdentifier, listUniqueIdentifiers, login, login, logout, noop, reset, retrieveMessage, retrieveMessageTop, status
Methods inherited from class org.apache.commons.net.pop3.POP3
disconnect, getAdditionalReply, getCommandSupport, getReplyString, getReplyStrings, getState, removeProtocolCommandistener, sendCommand, sendCommand, sendCommand, sendCommand, setState
Methods inherited from class org.apache.commons.net.SocketClient
addProtocolCommandListener, applySocketAttributes, connect, connect, connect, connect, connect, connect, createCommandSupport, fireCommandSent, fireReplyReceived, getCharset, getCharsetName, getConnectTimeout, getDefaultPort, getDefaultTimeout, getKeepAlive, getLocalAddress, getLocalPort, getProxy, getReceiveBufferSize, getRemoteAddress, getRemotePort, getSendBufferSize, getServerSocketFactory, getSoLinger, getSoTimeout, getTcpNoDelay, isAvailable, isConnected, removeProtocolCommandListener, setCharset, setConnectTimeout, setDefaultPort, setDefaultTimeout, setKeepAlive, setProxy, setReceiveBufferSize, setSendBufferSize, setServerSocketFactory, setSocketFactory, setSoLinger, setSoTimeout, setTcpNoDelay, verifyRemote
-
Field Details
-
DEFAULT_POP3S_PORT
private static final int DEFAULT_POP3S_PORT- See Also:
-
DEFAULT_PROTOCOL
Default secure socket protocol name, like TLS- See Also:
-
isImplicit
private final boolean isImplicitThe security mode. True - Implicit Mode / False - Explicit Mode. -
protocol
The secure socket protocol to be used, like SSL/TLS. -
context
The context object. -
suites
The cipher suites. SSLSockets have a default set of these anyway, so no initialization required. -
protocols
The protocol versions. -
trustManager
The FTPSTrustManager
implementation, default null. -
keyManager
TheKeyManager
, default null. -
hostnameVerifier
TheHostnameVerifier
to use post-TLS, default null (i.e. no verification). -
tlsEndpointChecking
private boolean tlsEndpointCheckingUse Java 1.7+ HTTPS Endpoint Identification Algorithim.
-
-
Constructor Details
-
POP3SClient
public POP3SClient()Constructor for POP3SClient, usingDEFAULT_PROTOCOL
i.e. TLS Sets security mode to explicit. -
POP3SClient
public POP3SClient(boolean implicit) Constructor for POP3SClient, usingDEFAULT_PROTOCOL
i.e. TLS- Parameters:
implicit
- The security mode,true
for implicit,false
for explicit
-
POP3SClient
Constructor for POP3SClient, usingDEFAULT_PROTOCOL
i.e. TLS- Parameters:
implicit
- The security mode,true
for implicit,false
for explicitctx
- A pre-configured SSL Context.
-
POP3SClient
Constructor for POP3SClient, usingDEFAULT_PROTOCOL
- TLS - and isImplicit = false- Parameters:
context
- A pre-configured SSL Context.- See Also:
-
POP3SClient
Constructor for POP3SClient. Sets security mode to explicit.- Parameters:
proto
- the protocol.
-
POP3SClient
Constructor for POP3SClient.- Parameters:
proto
- the protocol.implicit
- The security mode,true
for implicit,false
for explicit
-
POP3SClient
Constructor for POP3SClient. Sets the default port toDEFAULT_POP3S_PORT
- 995 - if using implicit mode- Parameters:
proto
- the protocol.implicit
- The security mode,true
for implicit,false
for explicitctx
- the context to be used
-
-
Method Details
-
_connectAction_
Because there are so many connect() methods, the _connectAction_() method is provided as a means of performing some action immediately after establishing a connection, rather than reimplementing all of the connect() methods.- Overrides:
_connectAction_
in classPOP3
- Throws:
IOException
- If it is thrown by _connectAction_().- See Also:
-
execTLS
The TLS command execution.- Returns:
- TRUE if the command and negotiation succeeded.
- Throws:
SSLException
- If the server reply code is not positive.IOException
- If an I/O error occurs while sending the command or performing the negotiation.
-
getEnabledCipherSuites
Returns the names of the cipher suites which could be enabled for use on this connection. When the underlyingSocket
is not anSSLSocket
instance, returns null.- Returns:
- An array of cipher suite names, or
null
.
-
getEnabledProtocols
Returns the names of the protocol versions which are currently enabled for use on this connection. When the underlyingSocket
is not anSSLSocket
instance, returns null.- Returns:
- An array of protocols, or
null
.
-
getHostnameVerifier
Get the currently configuredHostnameVerifier
.- Returns:
- A HostnameVerifier instance.
- Since:
- 3.4
-
getKeyManager
Get theKeyManager
instance.- Returns:
- The current
KeyManager
instance.
-
getTrustManager
Get the currently configuredTrustManager
.- Returns:
- A TrustManager instance.
-
initSSLContext
Performs a lazy init of the SSL context.- Throws:
IOException
- When could not initialize the SSL context.
-
isEndpointCheckingEnabled
public boolean isEndpointCheckingEnabled()Return whether or not endpoint identification using the HTTPS algorithm on Java 1.7+ is enabled. The default behavior is for this to be disabled.- Returns:
- True if enabled, false if not.
- Since:
- 3.4
-
performSSLNegotiation
SSL/TLS negotiation. Acquires an SSL socket of a connection and carries out handshake processing.- Throws:
IOException
- If server negotiation fails.
-
setEnabledCipherSuites
Controls which particular cipher suites are enabled for use on this connection. Called before server negotiation.- Parameters:
cipherSuites
- The cipher suites.
-
setEnabledProtocols
Controls which particular protocol versions are enabled for use on this connection. I perform setting before a server negotiation.- Parameters:
protocolVersions
- The protocol versions.
-
setEndpointCheckingEnabled
public void setEndpointCheckingEnabled(boolean enable) Automatic endpoint identification checking using the HTTPS algorithm is supported on Java 1.7+. The default behavior is for this to be disabled.- Parameters:
enable
- Enable automatic endpoint identification checking using the HTTPS algorithm on Java 1.7+.- Since:
- 3.4
-
setHostnameVerifier
Override the defaultHostnameVerifier
to use.- Parameters:
newHostnameVerifier
- The HostnameVerifier implementation to set ornull
to disable.- Since:
- 3.4
-
setKeyManager
Set aKeyManager
to use.- Parameters:
newKeyManager
- The KeyManager implementation to set.- See Also:
-
setTrustManager
Override the defaultTrustManager
to use.- Parameters:
newTrustManager
- The TrustManager implementation to set.- See Also:
-