Network lists: always allowed, exempt from rate limits, always refused (closes #19)

Adds SWWAF_ALLOW_NETS, SWWAF_RATE_LIMIT_EXEMPT_NETS and SWWAF_DENY_NETS, read like SWWAF_TRUSTED_PROXIES and empty by default, and checked against the client's own address before its country is looked up. A client in SWWAF_ALLOW_NETS skips the country lists and the rate limits and is not looked up. One in SWWAF_DENY_NETS is refused with 403, logged as denied and not counted. One in SWWAF_RATE_LIMIT_EXEMPT_NETS is neither counted nor refused by the rate limits. SWWAF_EXCLUSIVELY_ALLOWED_COUNTRIES now refuses a private, loopback or link-local client unless SWWAF_ALLOW_NETS lists it. Judgement call: an address in both SWWAF_ALLOW_NETS and SWWAF_DENY_NETS is let through. Judgement call: the size and time limits still apply to SWWAF_ALLOW_NETS. Model: opus-5-5
2026-10-05 23:36:03 +00:00
parent df4cf769e0
commit c6070bf792
10 changed files with 329 additions and 55 deletions
@@ -51,6 +51,9 @@ const (
 	requestMaxBytes         = "SWWAF_REQUEST_MAX_BYTES"
 	responseMaxBytes        = "SWWAF_RESPONSE_MAX_BYTES"
 	trustedProxies          = "SWWAF_TRUSTED_PROXIES"
+	allowNets               = "SWWAF_ALLOW_NETS"
+	rateLimitExemptNets     = "SWWAF_RATE_LIMIT_EXEMPT_NETS"
+	denyNets                = "SWWAF_DENY_NETS"
 	rateLimitPerMinute      = "SWWAF_RATE_LIMIT_PER_MINUTE"
 	deniedCountries         = "SWWAF_DENIED_COUNTRIES"
 	allowedCountries        = "SWWAF_EXCLUSIVELY_ALLOWED_COUNTRIES"