nodemailer/dist/cjs/sendmail-transport/index.js

Easy as cake e-mail sending from your Node.js applications

"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
const node_child_process_1 = require("node:child_process");
const packageData = __importStar(require("../package-info.js"));
const shared = __importStar(require("../shared/index.js"));
const errors = __importStar(require("../errors.js"));
const le_windows_js_1 = __importDefault(require("../mime-node/le-windows.js"));
const le_unix_js_1 = __importDefault(require("../mime-node/le-unix.js"));
/**
 * Generates a Transport object for Sendmail
 *
 * Possible options can be the following:
 *
 *  * **path** optional path to sendmail binary
 *  * **newline** either 'windows' or 'unix'
 *  * **args** an array of arguments for the sendmail binary
 *
 * @constructor
 * @param optional config parameter for Sendmail
 */
class SendmailTransport {
    constructor(options) {
        options = options || {};
        // use a reference to spawn for mocking purposes
        this._spawn = node_child_process_1.spawn;
        this.options = options;
        this.name = 'Sendmail';
        this.version = packageData.version;
        this.path = 'sendmail';
        this.args = false;
        this.logger = shared.getLogger(this.options, {
            component: this.options.component || 'sendmail'
        });
        if (typeof options === 'string') {
            this.path = options;
        }
        else if (typeof options === 'object') {
            if (options.path) {
                this.path = options.path;
            }
            if (Array.isArray(options.args)) {
                this.args = options.args;
            }
        }
        this.winbreak = ['win', 'windows', 'dos', '\r\n'].includes((options.newline || '').toString().toLowerCase());
    }
    /**
     * <p>Compiles a mailcomposer message and forwards it to handler that sends it.</p>
     *
     * @param mail MailComposer object
     * @param done Callback function to run when the sending is completed
     */
    send(mail, done) {
        // Sendmail strips this header line by itself. send() runs after the message was
        // compiled, so mail.message is set
        mail.message.keepBcc = true;
        const envelope = mail.message.getEnvelope();
        const messageId = mail.message.messageId();
        let returned;
        const hasInvalidAddresses = []
            .concat(envelope.from || [])
            .concat(envelope.to || [])
            // a local part is either a dot-atom or a quoted-string, so a leading dash sits at
            // offset 0 or, behind the opening quote, at offset 1. Only the first shape is read
            // as an option by sendmail, but both are the address this guard keeps out of argv
            .some(addr => /^"?-/.test(addr));
        if (hasInvalidAddresses) {
            const err = new Error('Can not send mail. Invalid envelope addresses.');
            err.code = errors.ESENDMAIL;
            return done(err);
        }
        // force -i to keep single dots
        const args = this.args
            ? ['-i'].concat(this.args).concat(envelope.to)
            : ['-i'].concat(envelope.from ? ['-f', envelope.from] : []).concat(envelope.to);
        const callback = (err) => {
            if (returned) {
                // ignore any additional responses, already done
                return;
            }
            returned = true;
            if (typeof done === 'function') {
                if (err) {
                    return done(err);
                }
                return done(null, {
                    envelope,
                    messageId,
                    response: 'Messages queued for delivery'
                });
            }
        };
        let sendmail;
        try {
            sendmail = this._spawn(this.path, args);
        }
        catch (E) {
            this.logger.error({
                err: E,
                tnx: 'spawn',
                messageId
            }, 'Error occurred while spawning sendmail. %s', E.message);
            return callback(E);
        }
        if (sendmail) {
            sendmail.on('error', err => {
                this.logger.error({
                    err,
                    tnx: 'spawn',
                    messageId
                }, 'Error occurred when sending message %s. %s', messageId, err.message);
                callback(err);
            });
            sendmail.once('exit', code => {
                if (!code) {
                    return callback();
                }
                const err = new Error(code === 127 ? 'Sendmail command not found, process exited with code ' + code : 'Sendmail exited with code ' + code);
                err.code = errors.ESENDMAIL;
                this.logger.error({
                    err,
                    tnx: 'stdin',
                    messageId
                }, 'Error sending message %s to sendmail. %s', messageId, err.message);
                callback(err);
            });
            // the close listener is handed the exit code as its first argument, so a non-zero
            // code reaching it before the exit listener did counts as the error value
            sendmail.once('close', callback);
            sendmail.stdin.on('error', err => {
                this.logger.error({
                    err,
                    tnx: 'stdin',
                    messageId
                }, 'Error occurred when piping message %s to sendmail. %s', messageId, err.message);
                callback(err);
            });
            const recipients = [].concat(envelope.to || []);
            if (recipients.length > 3) {
                recipients.push('...and ' + recipients.splice(2).length + ' more');
            }
            this.logger.info({
                tnx: 'send',
                messageId
            }, 'Sending message %s to <%s>', messageId, recipients.join(', '));
            const sourceStream = mail.message.createReadStream();
            let stream = sourceStream;
            if (this.options.newline) {
                // apply the transport-level line ending transform; the message-level
                // `newline` option is handled by MimeNode in createReadStream()
                stream = sourceStream.pipe(this.winbreak ? new le_windows_js_1.default() : new le_unix_js_1.default());
                sourceStream.once('error', err => stream.emit('error', err));
            }
            stream.once('error', err => {
                this.logger.error({
                    err,
                    tnx: 'stdin',
                    messageId
                }, 'Error occurred when generating message %s. %s', messageId, err.message);
                sendmail.kill('SIGINT'); // do not deliver the message
                callback(err);
            });
            stream.pipe(sendmail.stdin);
        }
        else {
            const err = new Error('sendmail was not found');
            err.code = errors.ESENDMAIL;
            return callback(err);
        }
    }
}
exports.default = SendmailTransport;
module.exports = exports.default;
Object.defineProperty(module.exports, 'default', { value: exports.default, enumerable: false, writable: true, configurable: true });