56 lines
1.2 KiB
Go
56 lines
1.2 KiB
Go
package middleware
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import (
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"net/http"
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"strings"
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"git.artlef.fr/PersonalLibraryManager/internal/jwtauth"
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"github.com/gin-gonic/gin"
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"github.com/golang-jwt/jwt/v5"
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)
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func Auth() gin.HandlerFunc {
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return func(c *gin.Context) {
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//do not check current user if we are creating an account or logging in
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if strings.HasPrefix(c.FullPath(), "/auth/") {
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return
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}
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//do not check static files
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if strings.HasPrefix(c.FullPath(), "/bookcover/") {
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return
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}
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username, err := parseUserFromJwt(c)
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if err != nil {
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c.AbortWithStatusJSON(http.StatusUnauthorized,
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gin.H{"error": "You must be logged in to access this resource."})
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} else {
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c.Set("user", username)
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}
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}
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}
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func parseUserFromJwt(c *gin.Context) (string, error) {
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jwtokenStr := jwtFromBearerToken(c.GetHeader("Authorization"))
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jwtoken, parseErr := jwt.Parse(jwtokenStr,
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func(token *jwt.Token) (any, error) {
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return jwtauth.GetJwtKey()
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}, jwt.WithValidMethods([]string{jwt.SigningMethodHS256.Alg()}))
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if parseErr != nil {
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return "", parseErr
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}
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return jwtoken.Claims.GetSubject()
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}
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func jwtFromBearerToken(bearerToken string) string {
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splitToken := strings.Split(bearerToken, " ")
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if len(splitToken) == 2 {
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return splitToken[1]
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} else {
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return ""
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}
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}
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