Core Rule Set: ls -la passes in q on a gitea user's or organisation's page (closes #349)

On a path of one segment made of the characters a user's or an
organisation's name may hold, q now skips 932250 too, unless the path
ends in a server-side script's extension, such as .php or .cgi. The
searches on a user's and an organisation's page are recorded from gitea
1.27.3 and Forgejo 17.0.1.

Model: opus-5-5

internal/config/rproxy.go

@@ -48,17 +48,7 @@ type RProxy struct {
 	settings []slog.Attr
 }
 
-// defaultUpstreamURL is the default of SWRP_UPSTREAM_URL.
-const defaultUpstreamURL = "http://127.0.0.1:8081"
-
-// privateRanges are the private address ranges, the default trusted
-// proxies.
-const privateRanges = "10.0.0.0/8,172.16.0.0/12,192.168.0.0/16"
-
 var (
-	errNotUpstreamURL = errors.New(
-		"is not a URL with only a scheme, a host and an optional port, " +
-			"such as http://127.0.0.1:8081")
 	errNeedsWAFBackend = errors.New(
 		"is required: it is waf's URL, such as http://waf:8080")
 	errNotDisposition  = errors.New("is not allow or deny")
@@ -134,14 +124,6 @@ func (c *RProxy) LogValue() slog.Value {
 	return slog.GroupValue(c.settings...)
 }
 
-// appURL reads a setting that is the app's URL.
-func (e *environment) appURL(name, defaultValue string) *url.URL {
-	upstream, err := parseUpstreamURL(e.value(name, defaultValue))
-	e.check(name, err)
-
-	return upstream
-}
-
 // wafBackend reads the setting that is waf's URL, which must be set.
 func (e *environment) wafBackend(name string) *url.URL {
 	value := e.value(name, "")
@@ -208,32 +190,3 @@ func parseMilliseconds(value string) (time.Duration, bool) {
 
 	return time.Duration(n) * time.Millisecond, true
 }
-
-// parseUpstreamURL reads the app's URL: http or https, a host and an
-// optional port from 1 to 65535, and nothing else, since the request's
-// own path and query go to the app unchanged.
-func parseUpstreamURL(value string) (*url.URL, error) {
-	upstream, err := url.Parse(value)
-	if err != nil {
-		return nil, fmt.Errorf("%q %w", value, errNotUpstreamURL)
-	}
-
-	onlySchemeAndHost := (upstream.Scheme == "http" || upstream.Scheme == "https") &&
-		upstream.Hostname() != "" && upstream.User == nil &&
-		upstream.Opaque == "" &&
-		(upstream.Path == "" || upstream.Path == "/") &&
-		upstream.RawQuery == "" &&
-		upstream.Fragment == ""
-	if !onlySchemeAndHost {
-		return nil, fmt.Errorf("%q %w", value, errNotUpstreamURL)
-	}
-
-	if upstream.Port() != "" {
-		port, err := strconv.ParseUint(upstream.Port(), 10, 16)
-		if err != nil || port == 0 {
-			return nil, fmt.Errorf("%q %w", value, errNotUpstreamURL)
-		}
-	}
-
-	return upstream, nil
-}