566 lines
20 KiB
JavaScript
566 lines
20 KiB
JavaScript
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/* eslint no-undefined: 0 */
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'use strict';
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const MimeNode = require('../mime-node');
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const mimeFuncs = require('../mime-funcs');
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const parseDataURI = require('../shared').parseDataURI;
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/**
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* Creates the object for composing a MimeNode instance out from the mail options
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*
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* @constructor
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* @param {Object} mail Mail options
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*/
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class MailComposer {
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constructor(mail) {
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this.mail = mail || {};
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this.message = false;
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}
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/**
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* Builds MimeNode instance
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*/
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compile() {
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this._alternatives = this.getAlternatives();
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this._htmlNode = this._alternatives.filter(alternative => /^text\/html\b/i.test(alternative.contentType)).pop();
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this._attachments = this.getAttachments(!!this._htmlNode);
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this._useRelated = !!(this._htmlNode && this._attachments.related.length);
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this._useAlternative = this._alternatives.length > 1;
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this._useMixed = this._attachments.attached.length > 1 || (this._alternatives.length && this._attachments.attached.length === 1);
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// Compose MIME tree
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if (this.mail.raw) {
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this.message = new MimeNode('message/rfc822', { newline: this.mail.newline }).setRaw(this.mail.raw);
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} else if (this._useMixed) {
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this.message = this._createMixed();
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} else if (this._useAlternative) {
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this.message = this._createAlternative();
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} else if (this._useRelated) {
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this.message = this._createRelated();
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} else {
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this.message = this._createContentNode(
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false,
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[]
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.concat(this._alternatives || [])
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.concat(this._attachments.attached || [])
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.shift() || {
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contentType: 'text/plain',
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content: ''
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}
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);
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}
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// Add custom headers
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if (this.mail.headers) {
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this.message.addHeader(this.mail.headers);
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}
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// Add headers to the root node, always overrides custom headers
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['from', 'sender', 'to', 'cc', 'bcc', 'reply-to', 'in-reply-to', 'references', 'subject', 'message-id', 'date'].forEach(header => {
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let key = header.replace(/-(\w)/g, (o, c) => c.toUpperCase());
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if (this.mail[key]) {
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this.message.setHeader(header, this.mail[key]);
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}
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});
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// Sets custom envelope
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if (this.mail.envelope) {
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this.message.setEnvelope(this.mail.envelope);
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}
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// ensure Message-Id value
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this.message.messageId();
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return this.message;
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}
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/**
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* List all attachments. Resulting attachment objects can be used as input for MimeNode nodes
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*
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* @param {Boolean} findRelated If true separate related attachments from attached ones
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* @returns {Object} An object of arrays (`related` and `attached`)
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*/
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getAttachments(findRelated) {
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let icalEvent, eventObject;
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let attachments = [].concat(this.mail.attachments || []).map((attachment, i) => {
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let data;
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let isMessageNode = /^message\//i.test(attachment.contentType);
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if (/^data:/i.test(attachment.path || attachment.href)) {
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attachment = this._processDataUrl(attachment);
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}
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let contentType = attachment.contentType || mimeFuncs.detectMimeType(attachment.filename || attachment.path || attachment.href || 'bin');
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let isImage = /^image\//i.test(contentType);
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let contentDisposition = attachment.contentDisposition || (isMessageNode || (isImage && attachment.cid) ? 'inline' : 'attachment');
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data = {
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contentType,
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contentDisposition,
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contentTransferEncoding: 'contentTransferEncoding' in attachment ? attachment.contentTransferEncoding : 'base64'
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};
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if (attachment.filename) {
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data.filename = attachment.filename;
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} else if (!isMessageNode && attachment.filename !== false) {
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data.filename = (attachment.path || attachment.href || '').split('/').pop().split('?').shift() || 'attachment-' + (i + 1);
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if (data.filename.indexOf('.') < 0) {
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data.filename += '.' + mimeFuncs.detectExtension(data.contentType);
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}
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}
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if (/^https?:\/\//i.test(attachment.path)) {
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attachment.href = attachment.path;
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attachment.path = undefined;
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}
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if (attachment.cid) {
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data.cid = attachment.cid;
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}
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if (attachment.raw) {
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data.raw = attachment.raw;
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} else if (attachment.path) {
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data.content = {
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path: attachment.path
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};
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} else if (attachment.href) {
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data.content = {
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href: attachment.href,
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httpHeaders: attachment.httpHeaders
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};
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} else {
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data.content = attachment.content || '';
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}
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if (attachment.encoding) {
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data.encoding = attachment.encoding;
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}
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if (attachment.headers) {
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data.headers = attachment.headers;
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}
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return data;
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});
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if (this.mail.icalEvent) {
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if (
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typeof this.mail.icalEvent === 'object' &&
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(this.mail.icalEvent.content || this.mail.icalEvent.path || this.mail.icalEvent.href || this.mail.icalEvent.raw)
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) {
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icalEvent = this.mail.icalEvent;
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} else {
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icalEvent = {
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content: this.mail.icalEvent
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};
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}
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eventObject = {};
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Object.keys(icalEvent).forEach(key => {
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eventObject[key] = icalEvent[key];
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});
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eventObject.contentType = 'application/ics';
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if (!eventObject.headers) {
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eventObject.headers = {};
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}
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eventObject.filename = eventObject.filename || 'invite.ics';
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eventObject.headers['Content-Disposition'] = 'attachment';
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eventObject.headers['Content-Transfer-Encoding'] = 'base64';
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}
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if (!findRelated) {
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return {
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attached: attachments.concat(eventObject || []),
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related: []
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};
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} else {
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return {
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attached: attachments.filter(attachment => !attachment.cid).concat(eventObject || []),
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related: attachments.filter(attachment => !!attachment.cid)
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};
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}
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}
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/**
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* List alternatives. Resulting objects can be used as input for MimeNode nodes
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*
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* @returns {Array} An array of alternative elements. Includes the `text` and `html` values as well
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*/
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getAlternatives() {
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let alternatives = [],
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text,
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html,
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watchHtml,
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amp,
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icalEvent,
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eventObject;
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if (this.mail.text) {
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if (typeof this.mail.text === 'object' && (this.mail.text.content || this.mail.text.path || this.mail.text.href || this.mail.text.raw)) {
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text = this.mail.text;
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} else {
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text = {
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content: this.mail.text
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};
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}
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text.contentType = 'text/plain; charset=utf-8';
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}
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if (this.mail.watchHtml) {
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if (
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typeof this.mail.watchHtml === 'object' &&
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(this.mail.watchHtml.content || this.mail.watchHtml.path || this.mail.watchHtml.href || this.mail.watchHtml.raw)
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) {
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watchHtml = this.mail.watchHtml;
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} else {
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watchHtml = {
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content: this.mail.watchHtml
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};
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}
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watchHtml.contentType = 'text/watch-html; charset=utf-8';
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}
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if (this.mail.amp) {
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if (typeof this.mail.amp === 'object' && (this.mail.amp.content || this.mail.amp.path || this.mail.amp.href || this.mail.amp.raw)) {
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amp = this.mail.amp;
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} else {
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amp = {
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content: this.mail.amp
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};
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}
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amp.contentType = 'text/x-amp-html; charset=utf-8';
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}
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// NB! when including attachments with a calendar alternative you might end up in a blank screen on some clients
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if (this.mail.icalEvent) {
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if (
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typeof this.mail.icalEvent === 'object' &&
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(this.mail.icalEvent.content || this.mail.icalEvent.path || this.mail.icalEvent.href || this.mail.icalEvent.raw)
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) {
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icalEvent = this.mail.icalEvent;
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} else {
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icalEvent = {
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content: this.mail.icalEvent
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};
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}
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eventObject = {};
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Object.keys(icalEvent).forEach(key => {
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eventObject[key] = icalEvent[key];
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});
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if (eventObject.content && typeof eventObject.content === 'object') {
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// we are going to have the same attachment twice, so mark this to be
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// resolved just once
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eventObject.content._resolve = true;
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}
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eventObject.filename = false;
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eventObject.contentType = 'text/calendar; charset=utf-8; method=' + (eventObject.method || 'PUBLISH').toString().trim().toUpperCase();
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if (!eventObject.headers) {
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eventObject.headers = {};
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}
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}
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if (this.mail.html) {
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if (typeof this.mail.html === 'object' && (this.mail.html.content || this.mail.html.path || this.mail.html.href || this.mail.html.raw)) {
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html = this.mail.html;
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} else {
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html = {
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content: this.mail.html
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};
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}
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html.contentType = 'text/html; charset=utf-8';
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}
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[]
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.concat(text || [])
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.concat(watchHtml || [])
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.concat(amp || [])
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.concat(html || [])
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.concat(eventObject || [])
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.concat(this.mail.alternatives || [])
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.forEach(alternative => {
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let data;
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if (/^data:/i.test(alternative.path || alternative.href)) {
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alternative = this._processDataUrl(alternative);
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}
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data = {
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contentType: alternative.contentType || mimeFuncs.detectMimeType(alternative.filename || alternative.path || alternative.href || 'txt'),
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contentTransferEncoding: alternative.contentTransferEncoding
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};
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if (alternative.filename) {
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data.filename = alternative.filename;
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}
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if (/^https?:\/\//i.test(alternative.path)) {
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alternative.href = alternative.path;
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alternative.path = undefined;
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}
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if (alternative.raw) {
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data.raw = alternative.raw;
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} else if (alternative.path) {
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data.content = {
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path: alternative.path
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};
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} else if (alternative.href) {
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data.content = {
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href: alternative.href
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};
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} else {
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data.content = alternative.content || '';
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}
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if (alternative.encoding) {
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data.encoding = alternative.encoding;
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}
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if (alternative.headers) {
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data.headers = alternative.headers;
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}
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alternatives.push(data);
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});
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return alternatives;
|
||
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}
|
||
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|
||
|
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/**
|
||
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* Builds multipart/mixed node. It should always contain different type of elements on the same level
|
||
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* eg. text + attachments
|
||
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*
|
||
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* @param {Object} parentNode Parent for this note. If it does not exist, a root node is created
|
||
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* @returns {Object} MimeNode node element
|
||
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*/
|
||
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_createMixed(parentNode) {
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let node;
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if (!parentNode) {
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node = new MimeNode('multipart/mixed', {
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baseBoundary: this.mail.baseBoundary,
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textEncoding: this.mail.textEncoding,
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boundaryPrefix: this.mail.boundaryPrefix,
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disableUrlAccess: this.mail.disableUrlAccess,
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disableFileAccess: this.mail.disableFileAccess,
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normalizeHeaderKey: this.mail.normalizeHeaderKey,
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newline: this.mail.newline
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});
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} else {
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node = parentNode.createChild('multipart/mixed', {
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disableUrlAccess: this.mail.disableUrlAccess,
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disableFileAccess: this.mail.disableFileAccess,
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normalizeHeaderKey: this.mail.normalizeHeaderKey,
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newline: this.mail.newline
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});
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||
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}
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||
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||
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if (this._useAlternative) {
|
||
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this._createAlternative(node);
|
||
|
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} else if (this._useRelated) {
|
||
|
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this._createRelated(node);
|
||
|
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}
|
||
|
|
|
||
|
|
[]
|
||
|
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.concat((!this._useAlternative && this._alternatives) || [])
|
||
|
|
.concat(this._attachments.attached || [])
|
||
|
|
.forEach(element => {
|
||
|
|
// if the element is a html node from related subpart then ignore it
|
||
|
|
if (!this._useRelated || element !== this._htmlNode) {
|
||
|
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this._createContentNode(node, element);
|
||
|
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}
|
||
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});
|
||
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|
||
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return node;
|
||
|
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}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Builds multipart/alternative node. It should always contain same type of elements on the same level
|
||
|
|
* eg. text + html view of the same data
|
||
|
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*
|
||
|
|
* @param {Object} parentNode Parent for this note. If it does not exist, a root node is created
|
||
|
|
* @returns {Object} MimeNode node element
|
||
|
|
*/
|
||
|
|
_createAlternative(parentNode) {
|
||
|
|
let node;
|
||
|
|
|
||
|
|
if (!parentNode) {
|
||
|
|
node = new MimeNode('multipart/alternative', {
|
||
|
|
baseBoundary: this.mail.baseBoundary,
|
||
|
|
textEncoding: this.mail.textEncoding,
|
||
|
|
boundaryPrefix: this.mail.boundaryPrefix,
|
||
|
|
disableUrlAccess: this.mail.disableUrlAccess,
|
||
|
|
disableFileAccess: this.mail.disableFileAccess,
|
||
|
|
normalizeHeaderKey: this.mail.normalizeHeaderKey,
|
||
|
|
newline: this.mail.newline
|
||
|
|
});
|
||
|
|
} else {
|
||
|
|
node = parentNode.createChild('multipart/alternative', {
|
||
|
|
disableUrlAccess: this.mail.disableUrlAccess,
|
||
|
|
disableFileAccess: this.mail.disableFileAccess,
|
||
|
|
normalizeHeaderKey: this.mail.normalizeHeaderKey,
|
||
|
|
newline: this.mail.newline
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
this._alternatives.forEach(alternative => {
|
||
|
|
if (this._useRelated && this._htmlNode === alternative) {
|
||
|
|
this._createRelated(node);
|
||
|
|
} else {
|
||
|
|
this._createContentNode(node, alternative);
|
||
|
|
}
|
||
|
|
});
|
||
|
|
|
||
|
|
return node;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Builds multipart/related node. It should always contain html node with related attachments
|
||
|
|
*
|
||
|
|
* @param {Object} parentNode Parent for this note. If it does not exist, a root node is created
|
||
|
|
* @returns {Object} MimeNode node element
|
||
|
|
*/
|
||
|
|
_createRelated(parentNode) {
|
||
|
|
let node;
|
||
|
|
|
||
|
|
if (!parentNode) {
|
||
|
|
node = new MimeNode('multipart/related; type="text/html"', {
|
||
|
|
baseBoundary: this.mail.baseBoundary,
|
||
|
|
textEncoding: this.mail.textEncoding,
|
||
|
|
boundaryPrefix: this.mail.boundaryPrefix,
|
||
|
|
disableUrlAccess: this.mail.disableUrlAccess,
|
||
|
|
disableFileAccess: this.mail.disableFileAccess,
|
||
|
|
normalizeHeaderKey: this.mail.normalizeHeaderKey,
|
||
|
|
newline: this.mail.newline
|
||
|
|
});
|
||
|
|
} else {
|
||
|
|
node = parentNode.createChild('multipart/related; type="text/html"', {
|
||
|
|
disableUrlAccess: this.mail.disableUrlAccess,
|
||
|
|
disableFileAccess: this.mail.disableFileAccess,
|
||
|
|
normalizeHeaderKey: this.mail.normalizeHeaderKey,
|
||
|
|
newline: this.mail.newline
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
this._createContentNode(node, this._htmlNode);
|
||
|
|
|
||
|
|
this._attachments.related.forEach(alternative => this._createContentNode(node, alternative));
|
||
|
|
|
||
|
|
return node;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Creates a regular node with contents
|
||
|
|
*
|
||
|
|
* @param {Object} parentNode Parent for this note. If it does not exist, a root node is created
|
||
|
|
* @param {Object} element Node data
|
||
|
|
* @returns {Object} MimeNode node element
|
||
|
|
*/
|
||
|
|
_createContentNode(parentNode, element) {
|
||
|
|
element = element || {};
|
||
|
|
element.content = element.content || '';
|
||
|
|
|
||
|
|
let node;
|
||
|
|
let encoding = (element.encoding || 'utf8')
|
||
|
|
.toString()
|
||
|
|
.toLowerCase()
|
||
|
|
.replace(/[-_\s]/g, '');
|
||
|
|
|
||
|
|
if (!parentNode) {
|
||
|
|
node = new MimeNode(element.contentType, {
|
||
|
|
filename: element.filename,
|
||
|
|
baseBoundary: this.mail.baseBoundary,
|
||
|
|
textEncoding: this.mail.textEncoding,
|
||
|
|
boundaryPrefix: this.mail.boundaryPrefix,
|
||
|
|
disableUrlAccess: this.mail.disableUrlAccess,
|
||
|
|
disableFileAccess: this.mail.disableFileAccess,
|
||
|
|
normalizeHeaderKey: this.mail.normalizeHeaderKey,
|
||
|
|
newline: this.mail.newline
|
||
|
|
});
|
||
|
|
} else {
|
||
|
|
node = parentNode.createChild(element.contentType, {
|
||
|
|
filename: element.filename,
|
||
|
|
textEncoding: this.mail.textEncoding,
|
||
|
|
disableUrlAccess: this.mail.disableUrlAccess,
|
||
|
|
disableFileAccess: this.mail.disableFileAccess,
|
||
|
|
normalizeHeaderKey: this.mail.normalizeHeaderKey,
|
||
|
|
newline: this.mail.newline
|
||
|
|
});
|
||
|
|
}
|
||
|
|
|
||
|
|
// add custom headers
|
||
|
|
if (element.headers) {
|
||
|
|
node.addHeader(element.headers);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (element.cid) {
|
||
|
|
node.setHeader('Content-Id', '<' + element.cid.replace(/[<>]/g, '') + '>');
|
||
|
|
}
|
||
|
|
|
||
|
|
if (element.contentTransferEncoding) {
|
||
|
|
node.setHeader('Content-Transfer-Encoding', element.contentTransferEncoding);
|
||
|
|
} else if (this.mail.encoding && /^text\//i.test(element.contentType)) {
|
||
|
|
node.setHeader('Content-Transfer-Encoding', this.mail.encoding);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!/^text\//i.test(element.contentType) || element.contentDisposition) {
|
||
|
|
node.setHeader(
|
||
|
|
'Content-Disposition',
|
||
|
|
element.contentDisposition || (element.cid && /^image\//i.test(element.contentType) ? 'inline' : 'attachment')
|
||
|
|
);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (typeof element.content === 'string' && !['utf8', 'usascii', 'ascii'].includes(encoding)) {
|
||
|
|
element.content = Buffer.from(element.content, encoding);
|
||
|
|
}
|
||
|
|
|
||
|
|
// prefer pregenerated raw content
|
||
|
|
if (element.raw) {
|
||
|
|
node.setRaw(element.raw);
|
||
|
|
} else {
|
||
|
|
node.setContent(element.content);
|
||
|
|
}
|
||
|
|
|
||
|
|
return node;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Parses data uri and converts it to a Buffer
|
||
|
|
*
|
||
|
|
* @param {Object} element Content element
|
||
|
|
* @return {Object} Parsed element
|
||
|
|
*/
|
||
|
|
_processDataUrl(element) {
|
||
|
|
let parsedDataUri;
|
||
|
|
if ((element.path || element.href).match(/^data:/)) {
|
||
|
|
parsedDataUri = parseDataURI(element.path || element.href);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!parsedDataUri) {
|
||
|
|
return element;
|
||
|
|
}
|
||
|
|
|
||
|
|
element.content = parsedDataUri.data;
|
||
|
|
element.contentType = element.contentType || parsedDataUri.contentType;
|
||
|
|
|
||
|
|
if ('path' in element) {
|
||
|
|
element.path = false;
|
||
|
|
}
|
||
|
|
|
||
|
|
if ('href' in element) {
|
||
|
|
element.href = false;
|
||
|
|
}
|
||
|
|
|
||
|
|
return element;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
module.exports = MailComposer;
|