Interface SIPTrustAssociationInterceptor
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public interface SIPTrustAssociationInterceptorTheSIPTrustAssociationInterceptoris an interface for developing a SIP custom trust association interceptor (TAI). A custom TAI that implements this interface should also extendcom.ibm.wsspi.security.tai.extension.BaseTrustAssociationInterceptorclass.The custom TAI must implement the following methods:
initializeto allocate any resources needed for the TAInegotiateValidateandEstablishProtocolTrustthat returnsTAIResultto indicate the status of the message being processedisTargetProtocolInterceptorthat returns false/true to indicate whether a SIP message will be handled by the TAI.The idea is during processing a SIP request, the Liberty server will pass the
SipServletRequestandSipServletResponseto the SIP trust association interceptor. The trust association interceptor can inspect the SIP message to see if it contains security attributes (authentication or authorization attributes) from the third party security service.
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Method Summary
All Methods Instance Methods Abstract Methods Modifier and Type Method Description voidcleanup()Invoked when the TAI should free any resources it holds.java.lang.StringgetType()Returns a type value of the TAI.java.lang.StringgetVersion()Returns the version number of the current TAI implementation.intinitialize(java.util.Properties properties)Initializes the SIP trust association interceptor.booleanisTargetProtocolInterceptor(javax.servlet.sip.SipServletMessage sipMsg)The custom TAI should use this method to inspect if it can process theSipServletMessage.com.ibm.wsspi.security.tai.TAIResultnegotiateValidateandEstablishProtocolTrust(javax.servlet.sip.SipServletRequest req, javax.servlet.sip.SipServletResponse resp)This method is used to determine whether trust association can be established between the Liberty server and the third party security service.
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Method Detail
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isTargetProtocolInterceptor
boolean isTargetProtocolInterceptor(javax.servlet.sip.SipServletMessage sipMsg) throws com.ibm.websphere.security.WebTrustAssociationFailedExceptionThe custom TAI should use this method to inspect if it can process theSipServletMessage. The implementation should returntrueif the TAI can handle the sipMsg, elsefalseshould be returned.- Parameters:
sipMsg- SipServletMessage to be handled by the TAI- Returns:
- boolean true indicates that the message will be handled by the TAI, otherwise false
- Throws:
com.ibm.websphere.security.WebTrustAssociationFailedException- exception
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negotiateValidateandEstablishProtocolTrust
com.ibm.wsspi.security.tai.TAIResult negotiateValidateandEstablishProtocolTrust(javax.servlet.sip.SipServletRequest req, javax.servlet.sip.SipServletResponse resp) throws com.ibm.websphere.security.WebTrustAssociationFailedExceptionThis method is used to determine whether trust association can be established between the Liberty server and the third party security service. This method returnsTAIResultthat indicates the status of the message being processed.If authentication succeeds, the TAIResult should contain the status HttpServletResponse.SC_OK and a principal.
If the interceptor finds that the request does not contains the expected authentication data, it can write the challenge information in the SIP response and return
TAIResultwith status code HttpServletResponse.SC_UNAUTHORIZED (401), or SC_FORBIDDEN (403), or SC_PROXY_AUTHENTICATION_REQUIRED (407).- Parameters:
req- incoming SipServletRequest to be handled by the TAIresp- incoming SipServletResponse to be handled by the TAI- Returns:
- TAIResult result of trust association interceptor negotiation
- Throws:
com.ibm.websphere.security.WebTrustAssociationFailedException- exception
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initialize
int initialize(java.util.Properties properties) throws com.ibm.websphere.security.WebTrustAssociationFailedExceptionInitializes the SIP trust association interceptor. Invoked before the first message is processed so that the implementation can allocate any resources it needs. For example, it could establish a connection to a database or LDAP.- Parameters:
properties- Properties defined in the TAI properties- Returns:
- int - 0 indicates success and anything else a failure
- Throws:
com.ibm.websphere.security.WebTrustAssociationFailedException- exception
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getVersion
java.lang.String getVersion()
Returns the version number of the current TAI implementation.- Returns:
- String the version of the TAI
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getType
java.lang.String getType()
Returns a type value of the TAI.- Returns:
- String the type of the TAI
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cleanup
void cleanup()
Invoked when the TAI should free any resources it holds. For example, it could close a connection to a database.
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