131 lines
3.4 KiB
Go
131 lines
3.4 KiB
Go
package utils
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import (
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"encoding/json"
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"fmt"
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"log"
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"os"
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"strings"
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"time"
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"github.com/authorizerdev/authorizer/server/constants"
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"github.com/authorizerdev/authorizer/server/db"
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"github.com/authorizerdev/authorizer/server/enum"
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"github.com/gin-gonic/gin"
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"github.com/golang-jwt/jwt"
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v8 "rogchap.com/v8go"
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)
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func CreateAuthToken(user db.User, tokenType enum.TokenType, roles []string) (string, int64, error) {
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t := jwt.New(jwt.GetSigningMethod(constants.JWT_TYPE))
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expiryBound := time.Hour
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if tokenType == enum.RefreshToken {
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// expires in 1 year
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expiryBound = time.Hour * 8760
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}
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expiresAt := time.Now().Add(expiryBound).Unix()
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customClaims := jwt.MapClaims{
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"exp": expiresAt,
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"iat": time.Now().Unix(),
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"token_type": tokenType.String(),
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"email": user.Email,
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"id": user.ID,
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"allowed_roles": strings.Split(user.Roles, ","),
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constants.JWT_ROLE_CLAIM: roles,
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}
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// check for the extra access token script
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accessTokenScript := os.Getenv("CUSTOM_ACCESS_TOKEN_SCRIPT")
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if accessTokenScript != "" {
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userInfo := map[string]interface{}{
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"id": user.ID,
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"email": user.Email,
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"firstName": user.FirstName,
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"lastName": user.LastName,
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"image": user.Image,
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"roles": strings.Split(user.Roles, ","),
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"signUpMethods": strings.Split(user.SignupMethod, ","),
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}
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ctx, _ := v8.NewContext()
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userBytes, _ := json.Marshal(userInfo)
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claimBytes, _ := json.Marshal(customClaims)
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ctx.RunScript(fmt.Sprintf(`
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const user = %s;
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const tokenPayload = %s;
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const customFunction = %s;
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const functionRes = JSON.stringify(customFunction(user, tokenPayload));
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`, string(userBytes), string(claimBytes), accessTokenScript), "functionCall.js")
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val, err := ctx.RunScript("functionRes", "functionRes.js")
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if err != nil {
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log.Println("=> err custom access token script:", err)
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} else {
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extraPayload := make(map[string]interface{})
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err = json.Unmarshal([]byte(fmt.Sprintf("%s", val)), &extraPayload)
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if err != nil {
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log.Println("Error converting accessTokenScript response to map:", err)
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} else {
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for k, v := range extraPayload {
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customClaims[k] = v
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}
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}
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}
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}
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t.Claims = customClaims
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token, err := t.SignedString([]byte(constants.JWT_SECRET))
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if err != nil {
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return "", 0, err
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}
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return token, expiresAt, nil
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}
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func GetAuthToken(gc *gin.Context) (string, error) {
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token, err := GetCookie(gc)
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if err != nil || token == "" {
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// try to check in auth header for cookie
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log.Println("cookie not found checking headers")
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auth := gc.Request.Header.Get("Authorization")
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if auth == "" {
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return "", fmt.Errorf(`unauthorized`)
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}
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token = strings.TrimPrefix(auth, "Bearer ")
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}
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return token, nil
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}
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func VerifyAuthToken(token string) (map[string]interface{}, error) {
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var res map[string]interface{}
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claims := jwt.MapClaims{}
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_, err := jwt.ParseWithClaims(token, claims, func(token *jwt.Token) (interface{}, error) {
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return []byte(constants.JWT_SECRET), nil
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})
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if err != nil {
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return res, err
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}
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// claim parses exp & iat into float 64 with e^10,
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// but we expect it to be int64
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// hence we need to assert interface and convert to int64
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intExp := int64(claims["exp"].(float64))
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intIat := int64(claims["iat"].(float64))
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data, _ := json.Marshal(claims)
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json.Unmarshal(data, &res)
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res["exp"] = intExp
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res["iat"] = intIat
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return res, nil
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}
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