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server.go
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server.go
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package route
import (
"encoding/json"
"fmt"
"os"
"strings"
"time"
"github.com/dgrijalva/jwt-go"
"github.com/iron-io/functions/examples/blog/database"
"github.com/iron-io/functions/examples/blog/models"
"golang.org/x/crypto/bcrypt"
)
var jwtSignKey = []byte("mysecretblog")
type Response map[string]interface{}
func SendResponse(resp Response) {
data, _ := json.Marshal(resp)
fmt.Println(string(data))
}
func SendError(err interface{}) {
SendResponse(Response{
"error": err,
})
}
func HandleToken(db *database.Database) {
var login *models.User
if err := json.NewDecoder(os.Stdin).Decode(&login); err != nil {
fmt.Printf("Couldn't decode login JSON: %v\n", err)
return
}
user, err := db.GetUser(login.Username)
if err != nil {
SendError("Couldn't create a token")
return
}
if err := bcrypt.CompareHashAndPassword(user.Password, []byte(login.NewPassword)); err != nil {
SendError("Couldn't create a token")
return
}
token := jwt.NewWithClaims(jwt.SigningMethodHS256, jwt.MapClaims{
"user": login.Username,
"exp": time.Now().Add(1 * time.Hour),
})
// Sign and get the complete encoded token as a string using the secret
tokenString, err := token.SignedString(jwtSignKey)
if err != nil {
SendError("Couldn't create a token")
return
}
SendResponse(Response{"token": tokenString})
}
func Authentication() (map[string]interface{}, bool) {
authorization := os.Getenv("HEADER_AUTHORIZATION")
p := strings.Split(authorization, " ")
if len(p) <= 1 {
return nil, false
}
token, err := jwt.Parse(p[1], func(token *jwt.Token) (interface{}, error) {
if _, ok := token.Method.(*jwt.SigningMethodHMAC); !ok {
return nil, fmt.Errorf("Unexpected signing method: %v", token.Header["alg"])
}
return jwtSignKey, nil
})
if err != nil {
return nil, false
}
if claims, ok := token.Claims.(jwt.MapClaims); ok && token.Valid {
return claims, true
}
return nil, false
}