70 lines
2 KiB
Go
70 lines
2 KiB
Go
package middleware
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import (
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"context"
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"net/http"
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"strings"
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"github.com/rede5/gohorsejobs/backend/internal/core/ports"
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)
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type contextKey string
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const (
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ContextUserID contextKey = "userID"
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ContextTenantID contextKey = "tenantID"
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ContextRoles contextKey = "roles"
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)
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type Middleware struct {
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authService ports.AuthService
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}
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func NewMiddleware(authService ports.AuthService) *Middleware {
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return &Middleware{authService: authService}
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}
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func (m *Middleware) HeaderAuthGuard(next http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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authHeader := r.Header.Get("Authorization")
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if authHeader == "" {
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http.Error(w, "Missing Authorization Header", http.StatusUnauthorized)
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return
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}
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parts := strings.Split(authHeader, " ")
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if len(parts) != 2 || parts[0] != "Bearer" {
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http.Error(w, "Invalid Header Format", http.StatusUnauthorized)
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return
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}
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token := parts[1]
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claims, err := m.authService.ValidateToken(token)
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if err != nil {
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http.Error(w, "Invalid Token: "+err.Error(), http.StatusUnauthorized)
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return
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}
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// Inject into Context
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ctx := context.WithValue(r.Context(), ContextUserID, claims["sub"])
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ctx = context.WithValue(ctx, ContextTenantID, claims["tenant"])
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ctx = context.WithValue(ctx, ContextRoles, claims["roles"])
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next.ServeHTTP(w, r.WithContext(ctx))
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})
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}
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// TenantGuard ensures that the request is made by a user belonging to the prompt tenant
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// Note: In this architecture, the token *defines* the tenant. So HeaderAuthGuard implicitly guards the tenant.
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// This middleware is for extra checks if URL params conflict with Token tenant.
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func (m *Middleware) TenantGuard(next http.Handler) http.Handler {
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return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
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tenantID := r.Context().Value(ContextTenantID)
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if tenantID == nil || tenantID == "" {
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http.Error(w, "Tenant Context Missing", http.StatusForbidden)
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return
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}
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// Logic to compare with URL param if needed...
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next.ServeHTTP(w, r)
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})
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}
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