Root config: Add version config (min and max) (#4970)

https://github.com/XTLS/Xray-core/pull/4968#issuecomment-3146592323

infra/conf/version.go

@@ -0,0 +1,22 @@
+package conf
+
+import (
+	"github.com/xtls/xray-core/app/version"
+	"github.com/xtls/xray-core/core"
+	"strconv"
+)
+
+type VersionConfig struct {
+	MinVersion string `json:"min"`
+	MaxVersion string `json:"max"`
+}
+
+func (c *VersionConfig) Build() (*version.Config, error) {
+	coreVersion := strconv.Itoa(int(core.Version_x)) + "." + strconv.Itoa(int(core.Version_y)) + "." + strconv.Itoa(int(core.Version_z))
+
+	return &version.Config{
+		CoreVersion: coreVersion,
+		MinVersion:  c.MinVersion,
+		MaxVersion:  c.MaxVersion,
+	}, nil
+}

infra/conf/xray.go

@@ -383,6 +383,7 @@ type Config struct {
 	FakeDNS          *FakeDNSConfig          `json:"fakeDns"`
 	Observatory      *ObservatoryConfig      `json:"observatory"`
 	BurstObservatory *BurstObservatoryConfig `json:"burstObservatory"`
+	Version          *VersionConfig          `json:"version"`
 }
 
 func (c *Config) findInboundTag(tag string) int {
@@ -451,6 +452,10 @@ func (c *Config) Override(o *Config, fn string) {
 		c.BurstObservatory = o.BurstObservatory
 	}
 
+	if o.Version != nil {
+		c.Version = o.Version
+	}
+
 	// update the Inbound in slice if the only one in override config has same tag
 	if len(o.InboundConfigs) > 0 {
 		for i := range o.InboundConfigs {
@@ -591,6 +596,14 @@ func (c *Config) Build() (*core.Config, error) {
 		config.App = append(config.App, serial.ToTypedMessage(r))
 	}
 
+	if c.Version != nil {
+		r, err := c.Version.Build()
+		if err != nil {
+			return nil, errors.New("failed to build version configuration").Base(err)
+		}
+		config.App = append(config.App, serial.ToTypedMessage(r))
+	}
+
 	var inbounds []InboundDetourConfig
 
 	if len(c.InboundConfigs) > 0 {