[Init] Initial commit - NetMesh terminal manager

domain/vaultImport/mobaXtermPasswords.ts

@@ -0,0 +1,174 @@
+import type { Host } from "../models";
+import { decryptMobaStoredSecret } from "./mobaXtermCrypto";
+
+type VaultImportIssue = { level: "warning" | "error"; message: string };
+
+export interface MobaXtermIniSections {
+  passwords: Map<string, string>;
+  credentials: Map<string, { username: string; ciphertext: string }>;
+  sessionP?: string;
+  sysUsername?: string;
+  sysHostname?: string;
+  passwordsInRegistry: boolean;
+  hasSesspass: boolean;
+}
+
+export interface AttachMobaXtermPasswordsOptions {
+  masterPassword?: string;
+}
+
+const parsePasswordKey = (raw: string): { username?: string; hostname?: string } => {
+  const stripped = raw.replace(/^[A-Za-z]+\d*:/, "");
+  const at = stripped.lastIndexOf("@");
+  if (at <= 0 || at === stripped.length - 1) return {};
+  return {
+    username: stripped.slice(0, at),
+    hostname: stripped.slice(at + 1),
+  };
+};
+
+const sameHost = (left: string | undefined, right: string | undefined): boolean => (
+  Boolean(left && right && left.localeCompare(right, undefined, { sensitivity: "accent" }) === 0)
+);
+
+const presentMasterPassword = (value: string | undefined): string | undefined => (
+  value === undefined || value === "" ? undefined : value
+);
+
+const lookupPlaintext = (
+  host: Host,
+  passwords: Map<string, string>,
+  credentialsByUser: Map<string, string[]>,
+): string | undefined => {
+  const username = host.username?.trim();
+  const hostname = host.hostname;
+  const port = host.port ?? 22;
+  if (username) {
+    const exactKeys = [
+      `${username}@${hostname}`,
+      `ssh${port}:${username}@${hostname}`,
+      `ssh:${username}@${hostname}`,
+    ];
+    for (const key of exactKeys) {
+      const value = passwords.get(key);
+      if (value) return value;
+    }
+  }
+
+  const hostMatches: string[] = [];
+  for (const [key, value] of passwords) {
+    const parsed = parsePasswordKey(key);
+    if (!sameHost(parsed.hostname, hostname)) continue;
+    if (username && parsed.username && parsed.username !== username) continue;
+    if (username && parsed.username === username) return value;
+    hostMatches.push(value);
+  }
+  if (!username && hostMatches.length === 1) return hostMatches[0];
+
+  if (username) {
+    const named = credentialsByUser.get(username);
+    if (named?.length === 1) return named[0];
+  }
+  return undefined;
+};
+
+export const attachMobaXtermPasswords = (
+  hosts: Host[],
+  sections: MobaXtermIniSections,
+  options: AttachMobaXtermPasswordsOptions = {},
+): { hosts: Host[]; issues: VaultImportIssue[]; attached: number } => {
+  const issues: VaultImportIssue[] = [];
+  const masterPassword = presentMasterPassword(options.masterPassword);
+  const hasCiphertext = sections.passwords.size > 0 || sections.credentials.size > 0;
+
+  if (sections.passwordsInRegistry && !hasCiphertext) {
+    issues.push({
+      level: "warning",
+      message: "MobaXterm saved passwords in the Windows registry, so this file has no credentials to import.",
+    });
+    return { hosts, issues, attached: 0 };
+  }
+
+  if (!hasCiphertext) return { hosts, issues, attached: 0 };
+
+  if (!masterPassword && sections.hasSesspass) {
+    issues.push({
+      level: "warning",
+      message: "This MobaXterm file encrypts saved passwords with a master password. Enter it to import credentials.",
+    });
+    return { hosts, issues, attached: 0 };
+  }
+
+  const decryptedPasswords = new Map<string, string>();
+  let failed = 0;
+  for (const [key, ciphertext] of sections.passwords) {
+    const parsed = parsePasswordKey(key);
+    const plaintext = decryptMobaStoredSecret({
+      ciphertext,
+      masterPassword,
+      sessionP: sections.sessionP,
+      sysUsername: sections.sysUsername,
+      sysHostname: sections.sysHostname,
+      connUsername: parsed.username,
+      connHostname: parsed.hostname,
+    });
+    if (plaintext) decryptedPasswords.set(key, plaintext);
+    else failed++;
+  }
+
+  const credentialsByUser = new Map<string, string[]>();
+  for (const credential of sections.credentials.values()) {
+    const plaintext = decryptMobaStoredSecret({
+      ciphertext: credential.ciphertext,
+      masterPassword,
+      sessionP: sections.sessionP,
+    });
+    if (!plaintext) {
+      failed++;
+      continue;
+    }
+    const current = credentialsByUser.get(credential.username) ?? [];
+    current.push(plaintext);
+    credentialsByUser.set(credential.username, current);
+  }
+
+  if (masterPassword && failed > 0) {
+    issues.push({
+      level: "warning",
+      message: "Could not decrypt MobaXterm passwords. Check the master password and try again.",
+    });
+    return { hosts, issues, attached: 0 };
+  }
+
+  if (failed > 0 && decryptedPasswords.size === 0 && credentialsByUser.size === 0) {
+    issues.push({
+      level: "warning",
+      message: "Could not decrypt MobaXterm passwords from this file.",
+    });
+    return { hosts, issues, attached: 0 };
+  }
+
+  if (failed > 0) {
+    issues.push({
+      level: "warning",
+      message: `Skipped ${failed} MobaXterm password(s) that could not be decrypted.`,
+    });
+  }
+
+  let attached = 0;
+  const nextHosts = hosts.map((host) => {
+    const password = lookupPlaintext(host, decryptedPasswords, credentialsByUser);
+    if (!password) return host;
+    attached++;
+    return { ...host, password, savePassword: true };
+  });
+
+  if (attached === 0) {
+    issues.push({
+      level: "warning",
+      message: "Decrypted MobaXterm passwords, but none matched the imported SSH sessions.",
+    });
+  }
+
+  return { hosts: nextHosts, issues, attached };
+};