Mobile (#735)

Initial modification to support mobile client

Export necessary interfaces for Android framework

iface/ipc_parser_android.go

@@ -0,0 +1,60 @@
+package iface
+
+import (
+	"encoding/hex"
+	"fmt"
+	"strings"
+
+	"golang.zx2c4.com/wireguard/wgctrl/wgtypes"
+)
+
+func toWgUserspaceString(wgCfg wgtypes.Config) string {
+	var sb strings.Builder
+	if wgCfg.PrivateKey != nil {
+		hexKey := hex.EncodeToString(wgCfg.PrivateKey[:])
+		sb.WriteString(fmt.Sprintf("private_key=%s\n", hexKey))
+	}
+
+	if wgCfg.ListenPort != nil {
+		sb.WriteString(fmt.Sprintf("listen_port=%d\n", *wgCfg.ListenPort))
+	}
+
+	if wgCfg.ReplacePeers {
+		sb.WriteString("replace_peers=true\n")
+	}
+
+	if wgCfg.FirewallMark != nil {
+		sb.WriteString(fmt.Sprintf("fwmark=%d\n", *wgCfg.FirewallMark))
+	}
+
+	for _, p := range wgCfg.Peers {
+		hexKey := hex.EncodeToString(p.PublicKey[:])
+		sb.WriteString(fmt.Sprintf("public_key=%s\n", hexKey))
+
+		if p.PresharedKey != nil {
+			preSharedHexKey := hex.EncodeToString(p.PresharedKey[:])
+			sb.WriteString(fmt.Sprintf("public_key=%s\n", preSharedHexKey))
+		}
+
+		if p.Remove {
+			sb.WriteString("remove=true")
+		}
+
+		if p.ReplaceAllowedIPs {
+			sb.WriteString("replace_allowed_ips=true\n")
+		}
+
+		for _, aip := range p.AllowedIPs {
+			sb.WriteString(fmt.Sprintf("allowed_ip=%s\n", aip.String()))
+		}
+
+		if p.Endpoint != nil {
+			sb.WriteString(fmt.Sprintf("endpoint=%s\n", p.Endpoint.String()))
+		}
+
+		if p.PersistentKeepaliveInterval != nil {
+			sb.WriteString(fmt.Sprintf("persistent_keepalive_interval=%d\n", int(p.PersistentKeepaliveInterval.Seconds())))
+		}
+	}
+	return sb.String()
+}