Add a `hardening` config section (RESOLVESPEC_HARDENING_*) so each
fix can be switched off to restore the previous behaviour:
- cors_strict_origins: only reflect origins listed in
cors.allowed_origins / server URLs, with credentials; `*` never
sends credentials; fix shared-slice append of expose headers.
- sort_strict: join aliases must match `alias.identifier` (empty alias
no longer matches everything); sort expressions reject dangerous
functions/catalogs; cql* columns must be identifier-safe.
- sql_strict: client raw-SQL fragments must have balanced parens and
quotes, no comments/`;`/`$$`, DML keywords, dangerous functions or
system catalogs; a rejected fragment now fails closed ("(1=0)")
instead of dropping the filter. Subqueries stay allowed unless
sql_block_subqueries is set.
- x-custom-sql-or is grouped together with the client's own
conditions (new optional WhereGrouper, implemented for bun and gorm)
so it can no longer OR past server-side filters.
* Reflect request origin for Access-Control-Allow-Origin
* Set Vary header for caching based on origin
* Allow specific headers from preflight requests
* Enable credentials only for specific origins
* Modify SetCORSHeaders function to include Request parameter.
* Set Access-Control-Allow-Origin and Access-Control-Allow-Headers to "*".
* Update all relevant calls to SetCORSHeaders across the codebase.
* Update CORSConfig to allow dynamic origins based on server instances.
* Add ExternalURLs field to ServerInstanceConfig for additional CORS support.
* Implement GetIPs function to retrieve non-local IP addresses for CORS.
Hein