wizrad: add validation to ssh key field (HMS-5349)

this commit add validation to ssh key field

JIRA: HMS-5349

src/Components/CreateImageWizard/utilities/useValidation.tsx

@@ -34,6 +34,7 @@ import {
   isHostnameValid,
   isKernelNameValid,
   isUserNameValid,
+  isSshKeyValid,
 } from '../validators';
 
 export type StepValidation = {
@@ -192,12 +193,20 @@ export function useUsersValidation(): StepValidation {
     users.length === 0 ||
     // Case 2: All fields are empty
     (userName === '' && userPassword === '' && userSshKey === '') ||
-    // Case 3: userName is valid
-    (userName && isUserNameValid(userName));
+    // Case 3: userName is valid and SshKey is valid
+    (userName &&
+      isUserNameValid(userName) &&
+      userSshKey &&
+      isSshKeyValid(userSshKey));
 
   return {
     errors: {
       userName: !isUserNameValid(userName) ? 'Invalid user name' : '',
+      userSshKey: !userSshKey
+        ? ''
+        : !isSshKeyValid(userSshKey)
+        ? 'Invalid SSH key'
+        : '',
     },
     disabledNext: !canProceed,
   };

src/Components/CreateImageWizard/validators.ts

@@ -68,6 +68,17 @@ export const isUserNameValid = (userName: string) => {
   return isLengthValid && isNotNumericOnly && isPatternValid;
 };
 
+export const isSshKeyValid = (sshKey: string) => {
+  // 1. Key types: ssh-rsa, ssh-dss, ssh-ed25519, or ecdsa-sha2-nistp(256|384|521).
+  // 2. Base64-encoded key material.
+  // 3. Optional comment at the end.
+  const isPatternValid =
+    /^(ssh-(rsa|dss|ed25519)|ecdsa-sha2-nistp(256|384|521))\s+[A-Za-z0-9+/=]+(\s+\S+)?$/.test(
+      sshKey
+    );
+  return isPatternValid;
+};
+
 export const getDuplicateMountPoints = (partitions: Partition[]): string[] => {
   const mountPointSet: Set<string> = new Set();
   const duplicates: string[] = [];