Overhaul [1/n]

Signed-off-by: Sean Du <do4suki@gmail.com>

internal/handler/ghome/basic/handshake.go

@@ -0,0 +1,60 @@
+package basic
+
+import (
+	"encoding/base64"
+	"fmt"
+	"honoka-chan/internal/router"
+	"honoka-chan/internal/schema/ghome"
+	"honoka-chan/internal/session"
+	"honoka-chan/pkg/db"
+	"honoka-chan/pkg/encrypt"
+	honokautils "honoka-chan/pkg/utils"
+	"net/url"
+	"strings"
+
+	"github.com/gin-gonic/gin"
+	"github.com/go-think/openssl"
+)
+
+func handshake(ctx *gin.Context) {
+	ss := session.New(ctx)
+	defer ss.Finalize()
+
+	data, err := ctx.GetRawData()
+	if ss.CheckErr(err) {
+		return
+	}
+
+	data, err = base64.StdEncoding.DecodeString(string(data))
+	if ss.CheckErr(err) {
+		return
+	}
+
+	decryptedData := encrypt.RSADecrypt(data)
+
+	params, _ := url.ParseQuery(string(decryptedData))
+
+	randKey := []byte(params.Get("randkey"))
+	deviceID := ss.GetDeviceID()
+
+	err = db.Ldb.Set([]byte(deviceID), randKey)
+	if ss.CheckErr(err) {
+		return
+	}
+
+	token := fmt.Sprintf(`{"message":"ok","result":0,"token":"%s"}`, strings.ToUpper(honokautils.RandomStr(33)))
+	encryptedToken, err := openssl.Des3ECBEncrypt([]byte(token), randKey[0:24], openssl.PKCS7_PADDING)
+	if ss.CheckErr(err) {
+		return
+	}
+
+	ss.Respond(ghome.HandshakeResp{
+		Code: 0,
+		Msg:  "ok",
+		Data: base64.StdEncoding.EncodeToString(encryptedToken),
+	})
+}
+
+func init() {
+	router.AddHandler("v1", "POST", "/basic/handshake", handshake)
+}