luci-proto-wireguard: client qr code generation

Signed-off-by: lvoegl <lvoegl@tdt.de>

1 files changed, 17 insertions, 0 deletions

diff --git a/applications/luci-app-wireguard/root/usr/libexec/rpcd/luci.wireguard b/applications/luci-app-wireguard/root/usr/libexec/rpcd/luci.wireguard
index 7354ad4922..fd3b4c8c44 100644..100755
--- a/applications/luci-app-wireguard/root/usr/libexec/rpcd/luci.wireguard
+++ b/applications/luci-app-wireguard/root/usr/libexec/rpcd/luci.wireguard
@@ -4,6 +4,7 @@ local json = require "luci.jsonc"
 local sys = require "luci.sys"
 local io = require "io"
 local uci = require "uci"
+local fs = require "nixio.fs"
 
 local methods = {
 	generateKeyPair = {
@@ -14,6 +15,22 @@ local methods = {
 			return {keys = {priv = prv, pub = pub}}
 		end
 	},
+	generateQrCode = {
+		args = {privkey = "privkey"},
+		call = function(args)
+			local qr_code
+
+			if fs.access("/usr/bin/qrencode") then
+				local pubkey = sys.exec("echo '" .. args.privkey .. "' | wg pubkey 2>/dev/null"):sub(1, -2)
+				local client_privkey = sys.exec("wg genkey 2>/dev/null"):sub(1, -2)
+				local qr_enc = "[Interface]\nPrivateKey = " .. client_privkey .. "\n[Peer]\nPublicKey = " .. pubkey .. "\nAllowedIPs = 0.0.0.0/0, ::/0"
+
+				qr_code = sys.exec("/usr/bin/qrencode --inline --8bit --type=SVG --output=- '" .. qr_enc .. "' 2>/dev/null")
+			end
+
+			return {qr_code = qr_code}
+		end
+	},
 	getWgInstances = {
 		call = function()
 			local data = {}