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Add LdapSessionOptions.CanonicalizeHostName property (#125454) - #136867
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Adds the CanonicalizeHostName property to LdapSessionOptions. On Linux/Unix, maps to OpenLDAP LDAP_OPT_X_SASL_NOCANON option. On Windows, returns true on get and throws PlatformNotSupportedException on set. Fixes dotnet#125454
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Passing a 32-bit Win32 BOOL into OpenLDAP ldap_set_option(ld, option, const void *invalue) causes an ABI mismatch on 64-bit platforms, notably under the Mono Interpreter where the upper 32 bits of the pointer argument slot remain uninitialized. OpenLDAP checks if (invalue == LDAP_OPT_OFF) directly against ((void *)0). By changing the interop parameter to IntPtr and passing value ? (IntPtr)1 : IntPtr.Zero, all 64 bits are cleanly cleared for false, allowing boolean option setters such as CanonicalizeHostName to properly toggle back to true/false.
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Fixes #125454
Description
Adds the approved
LdapSessionOptions.CanonicalizeHostNameproperty inSystem.DirectoryServices.Protocols:LDAP_OPT_X_SASL_NOCANON(0x610b), whereLDAP_OPT_X_SASL_NOCANONset to true means canonicalization is disabled (CanonicalizeHostName == false).trueon get (Windows always canonicalizes host names) and throwsPlatformNotSupportedExceptionon set, annotated with[UnsupportedOSPlatform(windows)]on setter as approved in API review.ref/System.DirectoryServices.Protocols.cs.LdapSessionOptionsTests.cs.Customer Impact
Allows callers on Linux to disable SASL host name canonicalization when negotiating Kerberos/GSSAPI tickets with LDAP servers.
Regression
No regression; additive API approved by API review.
Testing
System.DirectoryServices.Protocols.csprojbuilds cleanly for all targets (net12.0, net12.0-windows, net12.0-linux, net12.0-osx, etc.).ref/System.DirectoryServices.Protocols.csprojbuilds cleanly for all frameworks.CanonicalizeHostName_GetReturnsTrue_SetThrowsPlatformNotSupportedException: Passed.Risk
Low; non-breaking new property matching existing patterns in
LdapSessionOptions.