mirror of
https://github.com/vanitasvitae/Smack.git
synced 2024-11-26 14:02:06 +01:00
Remove ServerTrustManager
The implementation of ServerTrustManger contains a security vulnerability, which could lead to unauthorized certificates being erroneously trusted. SMACK-410
This commit is contained in:
Florian Schmaus
parent
5f5805cd1c
commit
93030c218c
3 changed files with 1 additions and 529 deletions
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@ -28,7 +28,6 @@ import javax.net.SocketFactory;
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import javax.net.ssl.SSLContext;
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import javax.net.ssl.SSLContext;
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import javax.security.auth.callback.CallbackHandler;
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import javax.security.auth.callback.CallbackHandler;
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import java.io.File;
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import java.util.ArrayList;
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import java.util.ArrayList;
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import java.util.Collections;
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import java.util.Collections;
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import java.util.List;
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import java.util.List;
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@ -55,17 +54,9 @@ public class ConnectionConfiguration implements Cloneable {
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private int port;
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private int port;
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protected List<HostAddress> hostAddresses;
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protected List<HostAddress> hostAddresses;
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private String truststorePath;
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private String truststoreType;
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private String truststorePassword;
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private String keystorePath;
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private String keystorePath;
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private String keystoreType;
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private String keystoreType;
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private String pkcs11Library;
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private String pkcs11Library;
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private boolean verifyChainEnabled = false;
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private boolean verifyRootCAEnabled = false;
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private boolean selfSignedCertificateEnabled = false;
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private boolean expiredCertificatesCheckEnabled = false;
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private boolean notMatchingDomainCheckEnabled = false;
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private SSLContext customSSLContext;
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private SSLContext customSSLContext;
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private boolean compressionEnabled = false;
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private boolean compressionEnabled = false;
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@ -203,18 +194,6 @@ public class ConnectionConfiguration implements Cloneable {
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this.serviceName = serviceName;
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this.serviceName = serviceName;
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this.proxy = proxy;
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this.proxy = proxy;
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// Build the default path to the cacert truststore file. By default we are
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// going to use the file located in $JREHOME/lib/security/cacerts.
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String javaHome = System.getProperty("java.home");
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StringBuilder buffer = new StringBuilder();
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buffer.append(javaHome).append(File.separator).append("lib");
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buffer.append(File.separator).append("security");
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buffer.append(File.separator).append("cacerts");
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truststorePath = buffer.toString();
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// Set the default store type
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truststoreType = "jks";
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// Set the default password of the cacert file that is "changeit"
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truststorePassword = "changeit";
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keystorePath = System.getProperty("javax.net.ssl.keyStore");
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keystorePath = System.getProperty("javax.net.ssl.keyStore");
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keystoreType = "jks";
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keystoreType = "jks";
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pkcs11Library = "pkcs11.config";
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pkcs11Library = "pkcs11.config";
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@ -287,66 +266,6 @@ public class ConnectionConfiguration implements Cloneable {
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this.securityMode = securityMode;
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this.securityMode = securityMode;
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}
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}
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/**
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* Retuns the path to the trust store file. The trust store file contains the root
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* certificates of several well known CAs. By default, will attempt to use the
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* the file located in $JREHOME/lib/security/cacerts.
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*
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* @return the path to the truststore file.
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*/
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public String getTruststorePath() {
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return truststorePath;
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}
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/**
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* Sets the path to the trust store file. The truststore file contains the root
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* certificates of several well?known CAs. By default Smack is going to use
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* the file located in $JREHOME/lib/security/cacerts.
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*
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* @param truststorePath the path to the truststore file.
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*/
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public void setTruststorePath(String truststorePath) {
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this.truststorePath = truststorePath;
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}
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/**
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* Returns the trust store type, or <tt>null</tt> if it's not set.
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*
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* @return the trust store type.
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*/
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public String getTruststoreType() {
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return truststoreType;
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}
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/**
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* Sets the trust store type.
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*
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* @param truststoreType the trust store type.
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*/
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public void setTruststoreType(String truststoreType) {
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this.truststoreType = truststoreType;
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}
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/**
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* Returns the password to use to access the trust store file. It is assumed that all
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* certificates share the same password in the trust store.
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*
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* @return the password to use to access the truststore file.
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*/
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public String getTruststorePassword() {
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return truststorePassword;
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}
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/**
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* Sets the password to use to access the trust store file. It is assumed that all
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* certificates share the same password in the trust store.
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*
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* @param truststorePassword the password to use to access the truststore file.
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*/
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public void setTruststorePassword(String truststorePassword) {
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this.truststorePassword = truststorePassword;
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}
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/**
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/**
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* Retuns the path to the keystore file. The key store file contains the
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* Retuns the path to the keystore file. The key store file contains the
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* certificates that may be used to authenticate the client to the server,
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* certificates that may be used to authenticate the client to the server,
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@ -408,110 +327,6 @@ public class ConnectionConfiguration implements Cloneable {
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this.pkcs11Library = pkcs11Library;
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this.pkcs11Library = pkcs11Library;
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}
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}
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/**
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* Returns true if the whole chain of certificates presented by the server are going to
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* be checked. By default the certificate chain is not verified.
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*
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* @return true if the whole chaing of certificates presented by the server are going to
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* be checked.
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*/
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public boolean isVerifyChainEnabled() {
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return verifyChainEnabled;
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}
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/**
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* Sets if the whole chain of certificates presented by the server are going to
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* be checked. By default the certificate chain is not verified.
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*
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* @param verifyChainEnabled if the whole chaing of certificates presented by the server
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* are going to be checked.
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*/
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public void setVerifyChainEnabled(boolean verifyChainEnabled) {
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this.verifyChainEnabled = verifyChainEnabled;
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}
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/**
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* Returns true if root CA checking is going to be done. By default checking is disabled.
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*
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* @return true if root CA checking is going to be done.
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*/
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public boolean isVerifyRootCAEnabled() {
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return verifyRootCAEnabled;
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}
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/**
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* Sets if root CA checking is going to be done. By default checking is disabled.
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*
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* @param verifyRootCAEnabled if root CA checking is going to be done.
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*/
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public void setVerifyRootCAEnabled(boolean verifyRootCAEnabled) {
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this.verifyRootCAEnabled = verifyRootCAEnabled;
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}
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/**
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* Returns true if self-signed certificates are going to be accepted. By default
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* this option is disabled.
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*
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* @return true if self-signed certificates are going to be accepted.
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*/
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public boolean isSelfSignedCertificateEnabled() {
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return selfSignedCertificateEnabled;
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}
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/**
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* Sets if self-signed certificates are going to be accepted. By default
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* this option is disabled.
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*
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* @param selfSignedCertificateEnabled if self-signed certificates are going to be accepted.
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*/
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public void setSelfSignedCertificateEnabled(boolean selfSignedCertificateEnabled) {
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this.selfSignedCertificateEnabled = selfSignedCertificateEnabled;
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}
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/**
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* Returns true if certificates presented by the server are going to be checked for their
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* validity. By default certificates are not verified.
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*
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* @return true if certificates presented by the server are going to be checked for their
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* validity.
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*/
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public boolean isExpiredCertificatesCheckEnabled() {
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return expiredCertificatesCheckEnabled;
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}
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/**
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* Sets if certificates presented by the server are going to be checked for their
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* validity. By default certificates are not verified.
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*
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* @param expiredCertificatesCheckEnabled if certificates presented by the server are going
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* to be checked for their validity.
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*/
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public void setExpiredCertificatesCheckEnabled(boolean expiredCertificatesCheckEnabled) {
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this.expiredCertificatesCheckEnabled = expiredCertificatesCheckEnabled;
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}
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/**
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* Returns true if certificates presented by the server are going to be checked for their
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* domain. By default certificates are not verified.
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*
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* @return true if certificates presented by the server are going to be checked for their
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* domain.
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*/
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public boolean isNotMatchingDomainCheckEnabled() {
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return notMatchingDomainCheckEnabled;
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}
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/**
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* Sets if certificates presented by the server are going to be checked for their
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* domain. By default certificates are not verified.
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*
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* @param notMatchingDomainCheckEnabled if certificates presented by the server are going
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* to be checked for their domain.
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*/
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public void setNotMatchingDomainCheckEnabled(boolean notMatchingDomainCheckEnabled) {
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this.notMatchingDomainCheckEnabled = notMatchingDomainCheckEnabled;
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}
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/**
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/**
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* Gets the custom SSLContext for SSL sockets. This is null by default.
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* Gets the custom SSLContext for SSL sockets. This is null by default.
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*
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*
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@ -1,342 +0,0 @@
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/**
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* $RCSfile$
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* $Revision$
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* $Date$
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*
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* Copyright 2003-2005 Jive Software.
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*
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* All rights reserved. Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.jivesoftware.smack;
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import javax.net.ssl.X509TrustManager;
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import java.io.FileInputStream;
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import java.io.InputStream;
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import java.io.IOException;
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import java.security.*;
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import java.security.cert.CertificateException;
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import java.security.cert.CertificateParsingException;
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import java.security.cert.X509Certificate;
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import java.util.*;
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import java.util.logging.Logger;
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import java.util.regex.Matcher;
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import java.util.regex.Pattern;
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/**
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* Trust manager that checks all certificates presented by the server. This class
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* is used during TLS negotiation. It is possible to disable/enable some or all checkings
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* by configuring the {@link ConnectionConfiguration}. The truststore file that contains
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* knows and trusted CA root certificates can also be configure in {@link ConnectionConfiguration}.
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*
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* @author Gaston Dombiak
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*/
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class ServerTrustManager implements X509TrustManager {
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private static Logger log = Logger.getLogger(ServerTrustManager.class.getName());
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private static Pattern cnPattern = Pattern.compile("(?i)(cn=)([^,]*)");
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private ConnectionConfiguration configuration;
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/**
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* Holds the domain of the remote server we are trying to connect
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*/
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private String server;
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private KeyStore trustStore;
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private static Map<KeyStoreOptions, KeyStore> stores = new HashMap<KeyStoreOptions, KeyStore>();
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public ServerTrustManager(String server, ConnectionConfiguration configuration) {
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this.configuration = configuration;
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this.server = server;
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InputStream in = null;
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char[] password = null;
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synchronized (stores) {
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KeyStoreOptions options = new KeyStoreOptions(configuration.getTruststoreType(),
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configuration.getTruststorePath(), configuration.getTruststorePassword());
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if (stores.containsKey(options)) {
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trustStore = stores.get(options);
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} else {
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try {
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trustStore = KeyStore.getInstance(options.getType());
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if (options.getPassword() != null) {
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password = options.getPassword().toCharArray();
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}
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if (options.getPath() == null) {
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trustStore.load(null, password);
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}
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else {
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in = new FileInputStream(options.getPath());
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trustStore.load(in, password);
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}
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} catch (Exception e) {
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trustStore = null;
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e.printStackTrace();
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} finally {
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if (in != null) {
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try {
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in.close();
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} catch (IOException ioe) {
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// Ignore.
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}
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}
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}
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stores.put(options, trustStore);
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}
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if (trustStore == null)
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// Disable root CA checking
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configuration.setVerifyRootCAEnabled(false);
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}
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}
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public X509Certificate[] getAcceptedIssuers() {
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return new X509Certificate[0];
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}
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public void checkClientTrusted(X509Certificate[] arg0, String arg1)
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throws CertificateException {
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}
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public void checkServerTrusted(X509Certificate[] x509Certificates, String arg1)
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throws CertificateException {
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int nSize = x509Certificates.length;
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List<String> peerIdentities = getPeerIdentity(x509Certificates[0]);
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if (configuration.isVerifyChainEnabled()) {
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// Working down the chain, for every certificate in the chain,
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// verify that the subject of the certificate is the issuer of the
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// next certificate in the chain.
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Principal principalLast = null;
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for (int i = nSize -1; i >= 0 ; i--) {
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X509Certificate x509certificate = x509Certificates[i];
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Principal principalIssuer = x509certificate.getIssuerDN();
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Principal principalSubject = x509certificate.getSubjectDN();
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if (principalLast != null) {
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if (principalIssuer.equals(principalLast)) {
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try {
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PublicKey publickey =
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x509Certificates[i + 1].getPublicKey();
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x509Certificates[i].verify(publickey);
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}
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catch (GeneralSecurityException generalsecurityexception) {
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throw new CertificateException(
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"signature verification failed of " + peerIdentities);
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}
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}
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else {
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throw new CertificateException(
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"subject/issuer verification failed of " + peerIdentities);
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}
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}
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principalLast = principalSubject;
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}
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}
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if (configuration.isVerifyRootCAEnabled()) {
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// Verify that the the last certificate in the chain was issued
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// by a third-party that the client trusts.
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boolean trusted = false;
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try {
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trusted = trustStore.getCertificateAlias(x509Certificates[nSize - 1]) != null;
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if (!trusted && nSize == 1 && configuration.isSelfSignedCertificateEnabled())
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{
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log.info("Accepting self-signed certificate of remote server: " + peerIdentities);
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trusted = true;
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}
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}
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catch (KeyStoreException e) {
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||||||
e.printStackTrace();
|
|
||||||
}
|
|
||||||
if (!trusted) {
|
|
||||||
throw new CertificateException("root certificate not trusted of " + peerIdentities);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
if (configuration.isNotMatchingDomainCheckEnabled()) {
|
|
||||||
// Verify that the first certificate in the chain corresponds to
|
|
||||||
// the server we desire to authenticate.
|
|
||||||
// Check if the certificate uses a wildcard indicating that subdomains are valid
|
|
||||||
if (peerIdentities.size() == 1 && peerIdentities.get(0).startsWith("*.")) {
|
|
||||||
// Remove the wildcard
|
|
||||||
String peerIdentity = peerIdentities.get(0).replace("*.", "");
|
|
||||||
// Check if the requested subdomain matches the certified domain
|
|
||||||
if (!server.endsWith(peerIdentity)) {
|
|
||||||
throw new CertificateException("target verification failed of " + peerIdentities);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
else if (!peerIdentities.contains(server)) {
|
|
||||||
throw new CertificateException("target verification failed of " + peerIdentities);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
if (configuration.isExpiredCertificatesCheckEnabled()) {
|
|
||||||
// For every certificate in the chain, verify that the certificate
|
|
||||||
// is valid at the current time.
|
|
||||||
Date date = new Date();
|
|
||||||
for (int i = 0; i < nSize; i++) {
|
|
||||||
try {
|
|
||||||
x509Certificates[i].checkValidity(date);
|
|
||||||
}
|
|
||||||
catch (GeneralSecurityException generalsecurityexception) {
|
|
||||||
throw new CertificateException("invalid date of " + server);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Returns the identity of the remote server as defined in the specified certificate. The
|
|
||||||
* identity is defined in the subjectDN of the certificate and it can also be defined in
|
|
||||||
* the subjectAltName extension of type "xmpp". When the extension is being used then the
|
|
||||||
* identity defined in the extension in going to be returned. Otherwise, the value stored in
|
|
||||||
* the subjectDN is returned.
|
|
||||||
*
|
|
||||||
* @param x509Certificate the certificate the holds the identity of the remote server.
|
|
||||||
* @return the identity of the remote server as defined in the specified certificate.
|
|
||||||
*/
|
|
||||||
public static List<String> getPeerIdentity(X509Certificate x509Certificate) {
|
|
||||||
// Look the identity in the subjectAltName extension if available
|
|
||||||
List<String> names = getSubjectAlternativeNames(x509Certificate);
|
|
||||||
if (names.isEmpty()) {
|
|
||||||
String name = x509Certificate.getSubjectDN().getName();
|
|
||||||
Matcher matcher = cnPattern.matcher(name);
|
|
||||||
if (matcher.find()) {
|
|
||||||
name = matcher.group(2);
|
|
||||||
}
|
|
||||||
// Create an array with the unique identity
|
|
||||||
names = new ArrayList<String>();
|
|
||||||
names.add(name);
|
|
||||||
}
|
|
||||||
return names;
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
|
||||||
* Returns the JID representation of an XMPP entity contained as a SubjectAltName extension
|
|
||||||
* in the certificate. If none was found then return <tt>null</tt>.
|
|
||||||
*
|
|
||||||
* @param certificate the certificate presented by the remote entity.
|
|
||||||
* @return the JID representation of an XMPP entity contained as a SubjectAltName extension
|
|
||||||
* in the certificate. If none was found then return <tt>null</tt>.
|
|
||||||
*/
|
|
||||||
private static List<String> getSubjectAlternativeNames(X509Certificate certificate) {
|
|
||||||
List<String> identities = new ArrayList<String>();
|
|
||||||
try {
|
|
||||||
Collection<List<?>> altNames = certificate.getSubjectAlternativeNames();
|
|
||||||
// Check that the certificate includes the SubjectAltName extension
|
|
||||||
if (altNames == null) {
|
|
||||||
return Collections.emptyList();
|
|
||||||
}
|
|
||||||
// Use the type OtherName to search for the certified server name
|
|
||||||
/*for (List item : altNames) {
|
|
||||||
Integer type = (Integer) item.get(0);
|
|
||||||
if (type == 0) {
|
|
||||||
// Type OtherName found so return the associated value
|
|
||||||
try {
|
|
||||||
// Value is encoded using ASN.1 so decode it to get the server's identity
|
|
||||||
ASN1InputStream decoder = new ASN1InputStream((byte[]) item.toArray()[1]);
|
|
||||||
DEREncodable encoded = decoder.readObject();
|
|
||||||
encoded = ((DERSequence) encoded).getObjectAt(1);
|
|
||||||
encoded = ((DERTaggedObject) encoded).getObject();
|
|
||||||
encoded = ((DERTaggedObject) encoded).getObject();
|
|
||||||
String identity = ((DERUTF8String) encoded).getString();
|
|
||||||
// Add the decoded server name to the list of identities
|
|
||||||
identities.add(identity);
|
|
||||||
}
|
|
||||||
catch (UnsupportedEncodingException e) {
|
|
||||||
// Ignore
|
|
||||||
}
|
|
||||||
catch (IOException e) {
|
|
||||||
// Ignore
|
|
||||||
}
|
|
||||||
catch (Exception e) {
|
|
||||||
e.printStackTrace();
|
|
||||||
}
|
|
||||||
}
|
|
||||||
// Other types are not good for XMPP so ignore them
|
|
||||||
log.info("SubjectAltName of invalid type found: " + certificate);
|
|
||||||
}*/
|
|
||||||
}
|
|
||||||
catch (CertificateParsingException e) {
|
|
||||||
e.printStackTrace();
|
|
||||||
}
|
|
||||||
return identities;
|
|
||||||
}
|
|
||||||
|
|
||||||
private static class KeyStoreOptions {
|
|
||||||
private final String type;
|
|
||||||
private final String path;
|
|
||||||
private final String password;
|
|
||||||
|
|
||||||
public KeyStoreOptions(String type, String path, String password) {
|
|
||||||
super();
|
|
||||||
this.type = type;
|
|
||||||
this.path = path;
|
|
||||||
this.password = password;
|
|
||||||
}
|
|
||||||
|
|
||||||
public String getType() {
|
|
||||||
return type;
|
|
||||||
}
|
|
||||||
|
|
||||||
public String getPath() {
|
|
||||||
return path;
|
|
||||||
}
|
|
||||||
|
|
||||||
public String getPassword() {
|
|
||||||
return password;
|
|
||||||
}
|
|
||||||
|
|
||||||
@Override
|
|
||||||
public int hashCode() {
|
|
||||||
final int prime = 31;
|
|
||||||
int result = 1;
|
|
||||||
result = prime * result + ((password == null) ? 0 : password.hashCode());
|
|
||||||
result = prime * result + ((path == null) ? 0 : path.hashCode());
|
|
||||||
result = prime * result + ((type == null) ? 0 : type.hashCode());
|
|
||||||
return result;
|
|
||||||
}
|
|
||||||
|
|
||||||
@Override
|
|
||||||
public boolean equals(Object obj) {
|
|
||||||
if (this == obj)
|
|
||||||
return true;
|
|
||||||
if (obj == null)
|
|
||||||
return false;
|
|
||||||
if (getClass() != obj.getClass())
|
|
||||||
return false;
|
|
||||||
KeyStoreOptions other = (KeyStoreOptions) obj;
|
|
||||||
if (password == null) {
|
|
||||||
if (other.password != null)
|
|
||||||
return false;
|
|
||||||
} else if (!password.equals(other.password))
|
|
||||||
return false;
|
|
||||||
if (path == null) {
|
|
||||||
if (other.path != null)
|
|
||||||
return false;
|
|
||||||
} else if (!path.equals(other.path))
|
|
||||||
return false;
|
|
||||||
if (type == null) {
|
|
||||||
if (other.type != null)
|
|
||||||
return false;
|
|
||||||
} else if (!type.equals(other.type))
|
|
||||||
return false;
|
|
||||||
return true;
|
|
||||||
}
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
@ -844,8 +844,7 @@ public class XMPPConnection extends Connection {
|
||||||
// Verify certificate presented by the server
|
// Verify certificate presented by the server
|
||||||
if (context == null) {
|
if (context == null) {
|
||||||
context = SSLContext.getInstance("TLS");
|
context = SSLContext.getInstance("TLS");
|
||||||
context.init(kms, new javax.net.ssl.TrustManager[] { new ServerTrustManager(getServiceName(), config) },
|
context.init(kms, null, new java.security.SecureRandom());
|
||||||
new java.security.SecureRandom());
|
|
||||||
}
|
}
|
||||||
Socket plain = socket;
|
Socket plain = socket;
|
||||||
// Secure the plain connection
|
// Secure the plain connection
|
||||||
|
|
|
||||||
Loading…
Reference in a new issue