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Update RETR and STOR commands #304

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Update RETR and STOR commands #304

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96 changes: 47 additions & 49 deletions src/commands/registration/retr.js
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Original file line number Diff line number Diff line change
Expand Up @@ -2,63 +2,61 @@ const Promise = require('bluebird');

module.exports = {
directive: 'RETR',
handler: function ({log, command} = {}) {
handler: function ({ log, command } = {}) {
if (!this.fs) return this.reply(550, 'File system not instantiated');
if (!this.fs.read) return this.reply(402, 'Not supported by file system');

const filePath = command.arg;

this.reply(150).then(() => this.connector.socket && this.connector.socket.resume())
return this.connector.waitForConnection()
.tap(() => this.commandSocket.pause())
.then(() => Promise.try(() => this.fs.read(filePath, {start: this.restByteCount})))
.then((fsResponse) => {
let {stream, clientPath} = fsResponse;
if (!stream && !clientPath) {
stream = fsResponse;
clientPath = filePath;
}
const serverPath = stream.path || filePath;

const destroyConnection = (connection, reject) => (err) => {
if (connection) connection.destroy(err);
reject(err);
};

const eventsPromise = new Promise((resolve, reject) => {
stream.on('data', (data) => {
if (stream) stream.pause();
if (this.connector.socket) {
this.connector.socket.write(data, () => stream && stream.resume());
}
.tap(() => this.commandSocket.pause())
.then(() => Promise.try(() => this.fs.read(filePath, { start: this.restByteCount })))
.then((fsResponse) => {
let { stream, clientPath } = fsResponse;
if (!stream && !clientPath) {
stream = fsResponse;
clientPath = filePath;
}
const serverPath = stream.path || filePath;

const destroyConnection = (connection, reject) => (err) => {
if (connection) connection.destroy(err);
reject(err);
};

const eventsPromise = new Promise((resolve, reject) => {
stream.on('data', (data) => {
if (stream) stream.pause();
if (this.connector.socket) {
this.connector.socket.write(data, () => stream && stream.resume());
}
});
stream.once('end', () => resolve());
stream.once('error', destroyConnection(this.connector.socket, reject));

this.connector.socket.once('error', destroyConnection(stream, reject));
});
stream.once('end', () => resolve());
stream.once('error', destroyConnection(this.connector.socket, reject));

this.connector.socket.once('error', destroyConnection(stream, reject));
this.restByteCount = 0;

return eventsPromise.tap(() => this.emit('RETR', null, serverPath))
.then(() => this.reply(226, clientPath))
.finally(() => stream.destroy && stream.destroy());
})
.catch(Promise.TimeoutError, (err) => {
log.error(err);
return this.reply(425, 'No connection established');
})
.catch((err) => {
log.error(err);
this.emit('RETR', err);
return this.reply(551, err.message);
})
.finally(() => {
this.connector.end();
this.commandSocket.resume();
});

this.restByteCount = 0;

return this.reply(150).then(() => stream.resume() && this.connector.socket.resume())
.then(() => eventsPromise)
.tap(() => this.emit('RETR', null, serverPath))
.then(() => this.reply(226, clientPath))
.finally(() => stream.destroy && stream.destroy());
})
.catch(Promise.TimeoutError, (err) => {
log.error(err);
return this.reply(425, 'No connection established');
})
.catch((err) => {
log.error(err);
this.emit('RETR', err);
return this.reply(551, err.message);
})
.finally(() => {
this.connector.end();
this.commandSocket.resume();
});
},
syntax: '{{cmd}} <path>',
description: 'Retrieve a copy of the file'
};
};
105 changes: 52 additions & 53 deletions src/commands/registration/stor.js
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Original file line number Diff line number Diff line change
Expand Up @@ -2,72 +2,71 @@ const Promise = require('bluebird');

module.exports = {
directive: 'STOR',
handler: function ({log, command} = {}) {
handler: function ({ log, command } = {}) {
if (!this.fs) return this.reply(550, 'File system not instantiated');
if (!this.fs.write) return this.reply(402, 'Not supported by file system');

const append = command.directive === 'APPE';
const fileName = command.arg;

this.reply(150).then((() => this.connector.socket && this.connector.socket.resume()))
return this.connector.waitForConnection()
.tap(() => this.commandSocket.pause())
.then(() => Promise.try(() => this.fs.write(fileName, {append, start: this.restByteCount})))
.then((fsResponse) => {
let {stream, clientPath} = fsResponse;
if (!stream && !clientPath) {
stream = fsResponse;
clientPath = fileName;
}
const serverPath = stream.path || fileName;
.tap(() => this.commandSocket.pause())
.then(() => Promise.try(() => this.fs.write(fileName, { append, start: this.restByteCount })))
.then((fsResponse) => {
let { stream, clientPath } = fsResponse;
if (!stream && !clientPath) {
stream = fsResponse;
clientPath = fileName;
}
const serverPath = stream.path || fileName;

const destroyConnection = (connection, reject) => (err) => {
try {
if (connection) {
if (connection.writable) connection.end();
connection.destroy(err);
const destroyConnection = (connection, reject) => (err) => {
try {
if (connection) {
if (connection.writable) connection.end();
connection.destroy(err);
}
} finally {
reject(err);
}
} finally {
reject(err);
}
};
};

const streamPromise = new Promise((resolve, reject) => {
stream.once('error', destroyConnection(this.connector.socket, reject));
stream.once('finish', () => resolve());
});
const streamPromise = new Promise((resolve, reject) => {
stream.once('error', destroyConnection(this.connector.socket, reject));
stream.once('finish', () => resolve());
});

const socketPromise = new Promise((resolve, reject) => {
this.connector.socket.pipe(stream, {end: false});
this.connector.socket.once('end', () => {
if (stream.listenerCount('close')) stream.emit('close');
else stream.end();
resolve();
const socketPromise = new Promise((resolve, reject) => {
this.connector.socket.pipe(stream, { end: false });
this.connector.socket.once('end', () => {
if (stream.listenerCount('close')) stream.emit('close');
else stream.end();
resolve();
});
this.connector.socket.once('error', destroyConnection(stream, reject));
});
this.connector.socket.once('error', destroyConnection(stream, reject));
});

this.restByteCount = 0;
this.restByteCount = 0;

return this.reply(150).then(() => this.connector.socket && this.connector.socket.resume())
.then(() => Promise.all([streamPromise, socketPromise]))
.tap(() => this.emit('STOR', null, serverPath))
.then(() => this.reply(226, clientPath))
.finally(() => stream.destroy && stream.destroy());
})
.catch(Promise.TimeoutError, (err) => {
log.error(err);
return this.reply(425, 'No connection established');
})
.catch((err) => {
log.error(err);
this.emit('STOR', err);
return this.reply(550, err.message);
})
.finally(() => {
this.connector.end();
this.commandSocket.resume();
});
return Promise.all([streamPromise, socketPromise])
.tap(() => this.emit('STOR', null, serverPath))
.then(() => this.reply(226, clientPath))
.finally(() => stream.destroy && stream.destroy());
})
.catch(Promise.TimeoutError, (err) => {
log.error(err);
return this.reply(425, 'No connection established');
})
.catch((err) => {
log.error(err);
this.emit('STOR', err);
return this.reply(550, err.message);
})
.finally(() => {
this.connector.end();
this.commandSocket.resume();
});
},
syntax: '{{cmd}} <path>',
description: 'Store data as a file at the server site'
};
};