Add SPNEGO support 664

[Naksen]

No description provided.

[Copilot]

Pull Request Overview

This PR adds SPNEGO (Security Provider Negotiation Protocol) support to the LDAP protocol implementation. SPNEGO provides a negotiation mechanism that typically wraps Kerberos authentication, allowing for more flexible GSS-API authentication flows.

• Implements SaslSPNEGOAuthentication class that extends the existing GSSAPI authentication
• Updates the supported SASL mechanisms list to include "GSS-SPNEGO"
• Modifies security context initialization to support multiple authentication mechanisms

Reviewed Changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
app/ldap_protocol/ldap_requests/bind_methods/sasl_spnego.py	New SPNEGO authentication implementation inheriting from GSSAPI
app/ldap_protocol/ldap_requests/bind_methods/base.py	Adds GSS_SPNEGO to the SASLMethod enum
app/ldap_protocol/ldap_requests/bind_methods/__init__.py	Registers the new SPNEGO authentication class
app/ldap_protocol/ldap_requests/bind_methods/sasl_gssapi.py	Removes Kerberos-specific mechanism restriction to support SPNEGO negotiation
app/ldap_protocol/ldap_requests/bind.py	Updates bind handling to include SPNEGO server credentials in response
app/ldap_protocol/ldap_requests/search.py	Adds GSS-SPNEGO to supported SASL mechanisms in root DSE
tests/test_ldap/test_bind.py	Adds comprehensive tests for SPNEGO authentication flows

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[Mastermind-U]

LGFM