Package com.ongres.scram.common

Class Gs2Header

java.lang.Object

com.ongres.scram.common.Gs2Header

public final class Gs2Header
extends Object

GS2 header for SCRAM.

Formal Syntax:

gs2-cbind-flag	("p=" cb-name) / "n" / "y" ;; "n" -> client doesn't support channel binding. ;; "y" -> client does support channel binding ;; but thinks the server does not. ;; "p" -> client requires channel binding. ;; The selected channel binding follows "p=".
gs2-header	gs2-cbind-flag "," [ authzid ] "," ;; GS2 header for SCRAM ;; (the actual GS2 header includes an optional ;; flag to indicate that the GSS mechanism is not ;; "standard", but since SCRAM is "standard", we ;; don't include that flag).
authzid	"a=" saslname

See Also:

• [RFC5802] Formal Syntax

Constructor Summary

Constructors

Constructor	Description
Gs2Header(@NotNull Gs2CbindFlag cbindFlag)	Construct and validates a Gs2Header with no authzid nor channel binding.
Gs2Header(@NotNull Gs2CbindFlag cbindFlag, @Nullable String cbName)	Construct and validates a Gs2Header with no authzid.
Gs2Header(@NotNull Gs2CbindFlag cbindFlag, @Nullable String cbName, @Nullable String authzid)	Construct and validates a Gs2Header.

Method Summary

Modifier and Type	Method	Description
@Nullable String	getAuthzid()	Return the authzid.
@NotNull Gs2CbindFlag	getChannelBindingFlag()	Return the channel binding flag.
@Nullable String	getChannelBindingName()	Return the channel binding type.
static @NotNull Gs2Header	parseFrom(@NotNull String message)	Read a Gs2Header from a String.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

Gs2Header

public Gs2Header(@NotNull
 @NotNull Gs2CbindFlag cbindFlag,
 @Nullable
 @Nullable String cbName,
 @Nullable
 @Nullable String authzid)

Construct and validates a Gs2Header. Only provide the channel binding name if the channel binding flag is set to required.

Parameters:

cbindFlag - The channel binding flag

cbName - The channel-binding name. Should be not null if channel binding is required

authzid - The optional SASL authorization identity

Throws:

IllegalArgumentException - If the channel binding flag and argument are invalid

Gs2Header

public Gs2Header(@NotNull
 @NotNull Gs2CbindFlag cbindFlag,
 @Nullable
 @Nullable String cbName)

Construct and validates a Gs2Header with no authzid. Only provide the channel binding name if the channel binding flag is set to required.

Parameters:

cbindFlag - The channel binding flag

cbName - The channel-binding name. Should be not null iif channel binding is required

Throws:

IllegalArgumentException - If the channel binding flag and argument are invalid

Gs2Header

public Gs2Header(@NotNull
 @NotNull Gs2CbindFlag cbindFlag)

Construct and validates a Gs2Header with no authzid nor channel binding.

Parameters:

cbindFlag - The channel binding flag

Throws:

IllegalArgumentException - If the channel binding is supported (no cbname can be provided here)

Method Details

getChannelBindingFlag

@NotNull
public @NotNull Gs2CbindFlag getChannelBindingFlag()

Return the channel binding flag.

Returns:

the gs2-cbind-flag

getChannelBindingName

@Nullable
public @Nullable String getChannelBindingName()

Return the channel binding type.

Returns:

the cb-name

getAuthzid

@Nullable
public @Nullable String getAuthzid()

Return the authzid.

Returns:

the "a=" saslname

parseFrom

@NotNull
public static @NotNull Gs2Header parseFrom(@NotNull
 @NotNull String message)

Read a Gs2Header from a String. String may contain trailing fields that will be ignored.

Parameters:

message - The String containing the Gs2Header

Returns:

The parsed Gs2Header object

Throws:

IllegalArgumentException - If the format/values of the String do not conform to a Gs2Header