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")