Revise ssh host alias field handling/validation

backend/src/ee/routes/v1/ssh-host-router.ts

@@ -1,4 +1,3 @@
-import slugify from "@sindresorhus/slugify";
 import { z } from "zod";
 
 import { EventType } from "@app/ee/services/audit-log/audit-log-types";
@@ -8,6 +7,7 @@ import { isValidHostname } from "@app/ee/services/ssh-host/ssh-host-validators";
 import { SSH_HOSTS } from "@app/lib/api-docs";
 import { ms } from "@app/lib/ms";
 import { publicSshCaLimit, readLimit, writeLimit } from "@app/server/config/rateLimiter";
+import { slugSchema } from "@app/server/lib/schemas";
 import { getTelemetryDistinctId } from "@app/server/lib/telemetry";
 import { verifyAuth } from "@app/server/plugins/auth/verify-auth";
 import { AuthMode } from "@app/services/auth/auth-type";
@@ -102,15 +102,7 @@ export const registerSshHostRouter = async (server: FastifyZodProvider) => {
             message: "Hostname must be a valid hostname"
           })
           .describe(SSH_HOSTS.CREATE.hostname),
-        alias: z
-          .string()
-          .trim()
-          .nullable()
-          .default(null)
-          .refine((v) => v == null || slugify(v) === v, {
-            message: "Alias must be a valid slug"
-          })
-          .describe(SSH_HOSTS.CREATE.alias),
+        alias: slugSchema({ min: 0, max: 64, field: "alias" }).describe(SSH_HOSTS.CREATE.alias).default(""),
         userCertTtl: z
           .string()
           .refine((val) => ms(val) > 0, "TTL must be a positive number")
@@ -185,15 +177,7 @@ export const registerSshHostRouter = async (server: FastifyZodProvider) => {
           })
           .optional()
           .describe(SSH_HOSTS.UPDATE.hostname),
-        alias: z
-          .string()
-          .trim()
-          .nullable()
-          .refine((v) => v == null || slugify(v) === v, {
-            message: "Alias must be a valid slug"
-          })
-          .optional()
-          .describe(SSH_HOSTS.UPDATE.alias),
+        alias: slugSchema({ min: 0, max: 64, field: "alias" }).describe(SSH_HOSTS.UPDATE.alias).optional(),
         userCertTtl: z
           .string()
           .refine((val) => ms(val) > 0, "TTL must be a positive number")

backend/src/ee/services/ssh-host/ssh-host-service.ts

@@ -193,7 +193,7 @@ export const sshHostServiceFactory = ({
         {
           projectId,
           hostname,
-          alias,
+          alias: alias === "" ? null : alias,
           userCertTtl,
           hostCertTtl,
           userSshCaId,
@@ -300,7 +300,7 @@ export const sshHostServiceFactory = ({
         sshHostId,
         {
           hostname,
-          alias,
+          alias: alias === "" ? null : alias,
           userCertTtl,
           hostCertTtl
         },

backend/src/ee/services/ssh-host/ssh-host-types.ts

@@ -4,7 +4,7 @@ export type TListSshHostsDTO = Omit<TProjectPermission, "projectId">;
 
 export type TCreateSshHostDTO = {
   hostname: string;
-  alias: string | null;
+  alias?: string;
   userCertTtl: string;
   hostCertTtl: string;
   loginMappings: {
@@ -20,7 +20,7 @@ export type TCreateSshHostDTO = {
 export type TUpdateSshHostDTO = {
   sshHostId: string;
   hostname?: string;
-  alias?: string | null;
+  alias?: string;
   userCertTtl?: string;
   hostCertTtl?: string;
   loginMappings?: {

frontend/src/hooks/api/sshHost/types.ts

@@ -16,7 +16,7 @@ export type TSshHost = {
 export type TCreateSshHostDTO = {
   projectId: string;
   hostname: string;
-  alias: string | null;
+  alias?: string;
   userCertTtl?: string;
   hostCertTtl?: string;
   loginMappings: {
@@ -30,7 +30,7 @@ export type TCreateSshHostDTO = {
 export type TUpdateSshHostDTO = {
   sshHostId: string;
   hostname?: string;
-  alias?: string | null;
+  alias?: string;
   userCertTtl?: string;
   hostCertTtl?: string;
   loginMappings?: {

frontend/src/pages/ssh/SshHostsPage/components/SshHostModal.tsx

@@ -134,15 +134,15 @@ export const SshHostModal = ({ popUp, handlePopUpToggle }: Props) => {
         return;
       }
 
-      const processedAlias = alias.trim() || null;
+      const trimmedAlias = alias.trim();
 
       // check if there is already a different host with the same non-null alias
-      if (processedAlias) {
+      if (trimmedAlias) {
         const existingAliases =
           sshHosts?.filter((h) => h.id !== sshHost?.id && h.alias !== null).map((h) => h.alias) ||
           [];
 
-        if (existingAliases.includes(processedAlias)) {
+        if (existingAliases.includes(trimmedAlias)) {
           createNotification({
             text: "A host with this alias already exists.",
             type: "error"
@@ -155,7 +155,7 @@ export const SshHostModal = ({ popUp, handlePopUpToggle }: Props) => {
         await updateMutateAsync({
           sshHostId: sshHost.id,
           hostname,
-          alias: processedAlias,
+          alias: trimmedAlias,
           userCertTtl,
           loginMappings: loginMappings.map(({ loginUser, allowedPrincipals }) => ({
             loginUser,
@@ -168,7 +168,7 @@ export const SshHostModal = ({ popUp, handlePopUpToggle }: Props) => {
         await createMutateAsync({
           projectId,
           hostname,
-          alias: processedAlias,
+          alias: trimmedAlias,
           userCertTtl,
           loginMappings: loginMappings.map(({ loginUser, allowedPrincipals }) => ({
             loginUser,