67 lines
1.7 KiB
TypeScript
67 lines
1.7 KiB
TypeScript
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import session from 'express-session';
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import fs from 'fs';
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import path from 'path';
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interface SessionFile
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{
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session: session.SessionData;
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expires: number;
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}
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export class JsonSessionStore extends session.Store
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{
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_dir: string;
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constructor( dir: string )
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{
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super();
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this._dir = dir;
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if ( ! fs.existsSync( dir ) ) fs.mkdirSync( dir, { recursive: true } );
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}
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_filePath( sid: string ): string
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{
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const safe = sid.replace( /[^a-zA-Z0-9_-]/g, '_' );
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return path.join( this._dir, safe + '.json' );
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}
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get( sid: string, callback: ( err: any, session?: session.SessionData ) => void ): void
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{
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try
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{
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const fp = this._filePath( sid );
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if ( ! fs.existsSync( fp ) ) { callback( null, null ); return; }
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const data: SessionFile = JSON.parse( fs.readFileSync( fp, 'utf8' ) );
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if ( Date.now() > data.expires ) { fs.unlinkSync( fp ); callback( null, null ); return; }
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callback( null, data.session );
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}
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catch ( e ) { callback( e ); }
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}
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set( sid: string, sessionData: session.SessionData, callback?: ( err?: any ) => void ): void
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{
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try
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{
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const fp = this._filePath( sid );
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const expires = sessionData.cookie?.expires
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? new Date( sessionData.cookie.expires ).getTime()
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: Date.now() + 7 * 24 * 60 * 60 * 1000;
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const file: SessionFile = { session: sessionData, expires };
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fs.writeFileSync( fp, JSON.stringify( file ), 'utf8' );
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callback?.();
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}
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catch ( e ) { callback?.( e ); }
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}
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destroy( sid: string, callback?: ( err?: any ) => void ): void
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{
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try
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{
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const fp = this._filePath( sid );
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if ( fs.existsSync( fp ) ) fs.unlinkSync( fp );
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callback?.();
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}
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catch ( e ) { callback?.( e ); }
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}
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}
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