122 lines
2.8 KiB
Go
122 lines
2.8 KiB
Go
package middleware
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import (
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"net/http"
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"strings"
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"github.com/Wikid82/charon/backend/internal/services"
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"github.com/gin-gonic/gin"
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)
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func AuthMiddleware(authService *services.AuthService) gin.HandlerFunc {
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return func(c *gin.Context) {
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if bypass, exists := c.Get("emergency_bypass"); exists {
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if bypassActive, ok := bypass.(bool); ok && bypassActive {
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c.Set("role", "admin")
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c.Set("userID", uint(0))
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c.Next()
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return
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}
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}
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if authService == nil {
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c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"error": "Authorization header required"})
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return
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}
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tokenString, ok := extractAuthToken(c)
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if !ok {
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c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"error": "Authorization header required"})
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return
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}
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claims, err := authService.ValidateToken(tokenString)
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if err != nil {
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c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"error": "Invalid token"})
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return
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}
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user, err := authService.GetUserByID(claims.UserID)
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if err != nil || !user.Enabled {
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c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"error": "Invalid token"})
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return
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}
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c.Set("userID", user.ID)
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c.Set("role", user.Role)
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c.Next()
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}
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}
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func extractAuthToken(c *gin.Context) (string, bool) {
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authHeader := ""
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// Try cookie first for browser flows (including WebSocket upgrades)
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if cookieToken := extractAuthCookieToken(c); cookieToken != "" {
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authHeader = "Bearer " + cookieToken
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}
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if authHeader == "" {
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authHeader = c.GetHeader("Authorization")
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}
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// DEPRECATED: Query parameter authentication for WebSocket connections
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// This fallback exists only for backward compatibility and will be removed in a future version.
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// Query parameters are logged in access logs and should not be used for sensitive data.
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// Use HttpOnly cookies instead, which are automatically sent by browsers and not logged.
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if authHeader == "" {
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if token := c.Query("token"); token != "" {
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authHeader = "Bearer " + token
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}
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}
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if authHeader == "" {
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return "", false
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}
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tokenString := strings.TrimPrefix(authHeader, "Bearer ")
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if tokenString == "" {
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return "", false
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}
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return tokenString, true
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}
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func extractAuthCookieToken(c *gin.Context) string {
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if c.Request == nil {
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return ""
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}
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token := ""
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for _, cookie := range c.Request.Cookies() {
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if cookie.Name != "auth_token" {
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continue
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}
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if cookie.Value == "" {
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continue
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}
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token = cookie.Value
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}
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return token
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}
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func RequireRole(role string) gin.HandlerFunc {
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return func(c *gin.Context) {
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userRole, exists := c.Get("role")
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if !exists {
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c.AbortWithStatusJSON(http.StatusUnauthorized, gin.H{"error": "Unauthorized"})
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return
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}
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if userRole.(string) != role && userRole.(string) != "admin" {
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c.AbortWithStatusJSON(http.StatusForbidden, gin.H{"error": "Forbidden"})
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return
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}
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c.Next()
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}
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}
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