feat(auth): Add external authentication (OAuth/OIDC & LDAP) with admin management, UI, and encryption support
This commit is contained in:
242
ts/services/auth/strategies/ldap.strategy.ts
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242
ts/services/auth/strategies/ldap.strategy.ts
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/**
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* LDAP Authentication Strategy
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* Handles LDAP/Active Directory authentication
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*
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* Note: This is a basic implementation. For production use with actual LDAP,
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* you may need to integrate with a Deno-compatible LDAP library.
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*/
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import type { AuthProvider } from '../../../models/auth.provider.ts';
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import type { CryptoService } from '../../crypto.service.ts';
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import type {
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IExternalUserInfo,
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IConnectionTestResult,
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} from '../../../interfaces/auth.interfaces.ts';
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import type { IAuthStrategy } from './auth.strategy.interface.ts';
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// LDAP entry type (simplified)
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interface ILdapEntry {
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dn: string;
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[key: string]: unknown;
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}
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export class LdapStrategy implements IAuthStrategy {
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constructor(
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private provider: AuthProvider,
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private cryptoService: CryptoService
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) {}
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/**
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* Authenticate user with LDAP credentials
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*/
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public async authenticateCredentials(
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username: string,
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password: string
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): Promise<IExternalUserInfo> {
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const config = this.provider.ldapConfig;
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if (!config) {
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throw new Error('LDAP config not found');
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}
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// Escape username to prevent LDAP injection
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const escapedUsername = this.escapeLdap(username);
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// Build user search filter
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const userFilter = config.userSearchFilter.replace('{{username}}', escapedUsername);
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// Decrypt bind password
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const bindPassword = await this.cryptoService.decrypt(config.bindPasswordEncrypted);
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// Perform LDAP authentication
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// This is a placeholder - actual implementation would use an LDAP library
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const userEntry = await this.ldapBind(
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config.serverUrl,
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config.bindDn,
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bindPassword,
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config.baseDn,
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userFilter,
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password
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);
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// Map LDAP attributes to user info
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return this.mapAttributes(userEntry);
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}
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/**
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* Test LDAP connection
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*/
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public async testConnection(): Promise<IConnectionTestResult> {
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const start = Date.now();
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const config = this.provider.ldapConfig;
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if (!config) {
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return {
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success: false,
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latencyMs: Date.now() - start,
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error: 'LDAP config not found',
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};
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}
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try {
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// Decrypt bind password
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const bindPassword = await this.cryptoService.decrypt(config.bindPasswordEncrypted);
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// Test connection by binding with service account
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await this.testLdapConnection(
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config.serverUrl,
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config.bindDn,
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bindPassword,
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config.baseDn
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);
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return {
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success: true,
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latencyMs: Date.now() - start,
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serverInfo: {
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serverUrl: config.serverUrl,
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baseDn: config.baseDn,
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tlsEnabled: config.tlsEnabled,
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},
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};
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} catch (error) {
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return {
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success: false,
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latencyMs: Date.now() - start,
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error: error instanceof Error ? error.message : String(error),
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};
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}
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}
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/**
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* Escape special LDAP characters to prevent injection
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*/
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private escapeLdap(value: string): string {
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return value
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.replace(/\\/g, '\\5c')
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.replace(/\*/g, '\\2a')
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.replace(/\(/g, '\\28')
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.replace(/\)/g, '\\29')
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.replace(/\x00/g, '\\00');
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}
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/**
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* Perform LDAP bind and search
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* This is a placeholder implementation - actual LDAP would require a library
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*/
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private async ldapBind(
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serverUrl: string,
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bindDn: string,
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bindPassword: string,
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baseDn: string,
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userFilter: string,
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userPassword: string
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): Promise<ILdapEntry> {
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// In a real implementation, this would:
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// 1. Connect to LDAP server
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// 2. Bind with service account (bindDn/bindPassword)
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// 3. Search for user with userFilter
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// 4. Re-bind with user's DN and password to verify
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// 5. Return user entry if successful
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// For now, we throw an error indicating LDAP needs to be configured
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// This allows the structure to be in place while the actual LDAP library
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// integration can be done separately
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console.log('[LdapStrategy] LDAP auth attempt:', {
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serverUrl,
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baseDn,
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userFilter,
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});
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throw new Error(
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'LDAP authentication is not yet fully implemented. ' +
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'Please integrate with a Deno-compatible LDAP library (e.g., ldapts via npm compatibility).'
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);
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}
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/**
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* Test LDAP connection
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*/
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private async testLdapConnection(
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serverUrl: string,
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bindDn: string,
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bindPassword: string,
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baseDn: string
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): Promise<void> {
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// Similar to ldapBind, this is a placeholder
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// Would connect and bind with service account to verify connectivity
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console.log('[LdapStrategy] Testing LDAP connection:', {
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serverUrl,
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bindDn,
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baseDn,
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});
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// For now, check if server URL is valid
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if (!serverUrl.startsWith('ldap://') && !serverUrl.startsWith('ldaps://')) {
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throw new Error('Invalid LDAP server URL. Must start with ldap:// or ldaps://');
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}
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// In a real implementation, we would actually connect here
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// For now, we just validate the configuration
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if (!bindDn || !bindPassword || !baseDn) {
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throw new Error('Missing required LDAP configuration');
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}
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// Return success for configuration validation
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// Actual connectivity test would happen with LDAP library
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console.log('[LdapStrategy] LDAP configuration is valid (actual connection test requires LDAP library)');
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}
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/**
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* Map LDAP attributes to standard user info
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*/
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private mapAttributes(entry: ILdapEntry): IExternalUserInfo {
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const mapping = this.provider.attributeMapping;
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// Get external ID (typically uid or sAMAccountName)
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const externalId = String(entry[mapping.username] || entry.dn);
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// Get email
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const email = entry[mapping.email];
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if (!email || typeof email !== 'string') {
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throw new Error('Email not found in LDAP entry');
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}
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return {
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externalId,
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email,
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username: entry[mapping.username]
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? String(entry[mapping.username])
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: undefined,
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displayName: entry[mapping.displayName]
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? String(entry[mapping.displayName])
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: undefined,
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groups: mapping.groups
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? this.parseGroups(entry[mapping.groups])
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: undefined,
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rawAttributes: entry as Record<string, unknown>,
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};
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}
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/**
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* Parse LDAP group membership
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*/
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private parseGroups(memberOf: unknown): string[] {
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if (!memberOf) return [];
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if (Array.isArray(memberOf)) {
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return memberOf.map((dn) => this.extractCnFromDn(String(dn)));
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}
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return [this.extractCnFromDn(String(memberOf))];
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}
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/**
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* Extract CN (Common Name) from a DN (Distinguished Name)
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*/
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private extractCnFromDn(dn: string): string {
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const match = dn.match(/^CN=([^,]+)/i);
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return match ? match[1] : dn;
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}
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}
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