imc-vibe/backend/internal/api/handlers/aliases.go
Christoph Haas 53261dec0c Add backend validation for aliases
- Validate source email format (RFC 5321 local-part)
- Ensure source is in the correct domain
- Validate destination (single or comma-separated emails)
- Check for duplicate aliases
- Add GetAliasBySource database method
2026-03-24 21:57:32 +01:00

168 lines
3.9 KiB
Go

package handlers
import (
"net/http"
"strconv"
"strings"
"github.com/gin-gonic/gin"
"github.com/imc-vibe/backend/internal/db"
)
type AliasHandler struct {
db *db.DB
}
func NewAliasHandler(database *db.DB) *AliasHandler {
return &AliasHandler{db: database}
}
type CreateAliasRequest struct {
Source string `json:"source" binding:"required"`
Destination string `json:"destination" binding:"required"`
}
func (h *AliasHandler) List(c *gin.Context) {
domainName := c.Param("name")
if domainName == "" {
Error(c, http.StatusBadRequest, "domain name required")
return
}
authCtx := GetAuthContext(c)
if authCtx == nil {
Error(c, http.StatusUnauthorized, "authentication required")
return
}
canAccess, _ := h.db.CanAccessDomain(authCtx.UserID, domainName, authCtx.IsAdmin())
if !canAccess {
Error(c, http.StatusForbidden, "access denied")
return
}
domain, err := h.db.GetDomainByName(domainName)
if err != nil {
Error(c, http.StatusNotFound, "domain not found")
return
}
aliases, err := h.db.GetAliasesByDomain(domain.ID)
if err != nil {
Error(c, http.StatusInternalServerError, "database error")
return
}
Success(c, aliases)
}
func (h *AliasHandler) Create(c *gin.Context) {
domainName := c.Param("name")
if domainName == "" {
Error(c, http.StatusBadRequest, "domain name required")
return
}
authCtx := GetAuthContext(c)
if authCtx == nil {
Error(c, http.StatusUnauthorized, "authentication required")
return
}
canAccess, _ := h.db.CanAccessDomain(authCtx.UserID, domainName, authCtx.IsAdmin())
if !canAccess {
Error(c, http.StatusForbidden, "access denied")
return
}
domain, err := h.db.GetDomainByName(domainName)
if err != nil {
Error(c, http.StatusNotFound, "domain not found")
return
}
var req CreateAliasRequest
if err := c.ShouldBindJSON(&req); err != nil {
Error(c, http.StatusBadRequest, "invalid request body")
return
}
// Validate source email format
if err := validateEmailLocalPart(req.Source); err != nil {
Error(c, http.StatusBadRequest, "source "+err.Error())
return
}
// Ensure source is in the correct domain
if !strings.HasSuffix(req.Source, "@"+domainName) {
Error(c, http.StatusBadRequest, "source must be in domain "+domainName)
return
}
// Validate destination - can be single email or comma-separated list
destinations := strings.Split(req.Destination, ",")
for _, dest := range destinations {
dest = strings.TrimSpace(dest)
if dest == "" {
Error(c, http.StatusBadRequest, "destination cannot be empty")
return
}
// Destination doesn't need @domain validation since it can be external
if strings.Contains(dest, "@") {
if err := validateEmailLocalPart(dest); err != nil {
Error(c, http.StatusBadRequest, "destination "+err.Error())
return
}
}
}
// Check for duplicate alias
existing, _ := h.db.GetAliasBySource(req.Source)
if existing != nil {
Error(c, http.StatusConflict, "alias already exists")
return
}
alias, err := h.db.CreateAliasInDomain(req.Source, req.Destination, domain.ID)
if err != nil {
Error(c, http.StatusInternalServerError, "failed to create alias")
return
}
Created(c, alias)
}
func (h *AliasHandler) Delete(c *gin.Context) {
domainName := c.Param("name")
idStr := c.Param("id")
if domainName == "" || idStr == "" {
Error(c, http.StatusBadRequest, "domain name and alias id required")
return
}
authCtx := GetAuthContext(c)
if authCtx == nil {
Error(c, http.StatusUnauthorized, "authentication required")
return
}
canAccess, _ := h.db.CanAccessDomain(authCtx.UserID, domainName, authCtx.IsAdmin())
if !canAccess {
Error(c, http.StatusForbidden, "access denied")
return
}
id, err := strconv.ParseUint(idStr, 10, 64)
if err != nil {
Error(c, http.StatusBadRequest, "invalid alias id")
return
}
if err := h.db.DeleteAlias(uint(id)); err != nil {
Error(c, http.StatusInternalServerError, "failed to delete alias")
return
}
NoContent(c)
}