Add android package route support

tun_rules.go

@@ -0,0 +1,72 @@
+package tun
+
+import (
+	"context"
+	"sort"
+
+	"github.com/sagernet/sing/common"
+	E "github.com/sagernet/sing/common/exceptions"
+	"github.com/sagernet/sing/common/ranges"
+)
+
+const (
+	androidUserRange        = 100000
+	userEnd          uint32 = 0xFFFFFFFF - 1
+)
+
+func (o *Options) BuildAndroidRules(packageManager PackageManager, errorHandler E.Handler) {
+	if len(o.IncludeAndroidUser) > 0 {
+		o.IncludeAndroidUser = common.Uniq(o.IncludeAndroidUser)
+		sort.Ints(o.IncludeAndroidUser)
+		for _, androidUser := range o.IncludeAndroidUser {
+			o.IncludeUID = append(o.IncludeUID, ranges.New[uint32](uint32(androidUser)*androidUserRange, uint32(androidUser+1)*androidUserRange-1))
+		}
+	}
+	if len(o.IncludePackage) > 0 {
+		o.IncludePackage = common.Uniq(o.IncludePackage)
+		for _, packageName := range o.IncludePackage {
+			if sharedId, loaded := packageManager.IDBySharedPackage(packageName); loaded {
+				o.IncludeUID = append(o.IncludeUID, ranges.NewSingle(sharedId))
+				continue
+			}
+			if ids, loaded := packageManager.IDByPackage(packageName); loaded {
+				for _, id := range ids {
+					o.IncludeUID = append(o.IncludeUID, ranges.NewSingle(id))
+				}
+				continue
+			}
+			errorHandler.NewError(context.Background(), E.New("package to include not found: ", packageName))
+		}
+	}
+	if len(o.ExcludePackage) > 0 {
+		o.ExcludePackage = common.Uniq(o.ExcludePackage)
+		for _, packageName := range o.ExcludePackage {
+			if sharedId, loaded := packageManager.IDBySharedPackage(packageName); loaded {
+				o.ExcludeUID = append(o.ExcludeUID, ranges.NewSingle(sharedId))
+				continue
+			}
+			if ids, loaded := packageManager.IDByPackage(packageName); loaded {
+				for _, id := range ids {
+					o.ExcludeUID = append(o.ExcludeUID, ranges.NewSingle(id))
+				}
+				continue
+			}
+			errorHandler.NewError(context.Background(), E.New("package to exclude not found: ", packageName))
+		}
+	}
+}
+
+func (o *Options) ExcludedRanges() (uidRanges []ranges.Range[uint32]) {
+	return buildExcludedRanges(o.IncludeUID, o.ExcludeUID)
+}
+
+func buildExcludedRanges(includeRanges []ranges.Range[uint32], excludeRanges []ranges.Range[uint32]) (uidRanges []ranges.Range[uint32]) {
+	uidRanges = includeRanges
+	if len(uidRanges) > 0 {
+		uidRanges = ranges.Exclude(uidRanges, excludeRanges)
+		uidRanges = ranges.Revert(0, userEnd, uidRanges)
+	} else {
+		uidRanges = excludeRanges
+	}
+	return ranges.Merge(uidRanges)
+}