Script to generate podcasts from a sub.

Currently uses modopts.ini, but this is likely to change in the future.

exec/podcast.js

+if (js.global.MSG_DELETE == undefined)
+	js.global.load("sbbsdefs.js");
+if (js.global.HTTP == undefined)
+	js.global.load("http.js");
+
+var opts = load({}, "modopts.js", "Podcast");
+var base;
+var i;
+var hdr;
+var out;
+var hdrs;
+var img_title;
+var img_link;
+var item;
+var body;
+var link;
+var m;
+var http;
+var item_headers;
+var item_length;
+var item_type;
+
+function encode_xml(str)
+{
+	str=str.replace(/&/g, '&');
+	str=str.replace(/&/g, '&');
+	str=str.replace(/</g, '&lt;');
+	str=str.replace(/>/g, '&gt;');
+	str=str.replace(/"/g, '&quot;');
+	str=str.replace(/'/g, '&apos;');
+	return str;
+}
+
+function add_channel_opt_attribute(name) {
+	if (opts[name] !== undefined) {
+		var xml_name = name.substr(0,1).toLowercase()+name.substr(1);
+		out.write('\t\t<'+xml_name+'>'+encode_xml(opts[name])+'</'+xml_name+'>\n');
+	}
+}
+
+if (opts == undefined) {
+	log("Unable to load Podcast modopts");
+	exit(1);
+}
+
+if (opts.Sub === undefined) {
+	log("Sub undefined in modopts.ini");
+	exit(1);
+}
+
+if (opts.Filename == undefined) {
+	log("Filename undefined in modopts.ini.");
+	exit(1);
+}
+
+if (opts.Title == undefined) {
+	log("Title undefined in modopts.ini.");
+	exit(1);
+}
+
+if (opts.Description == undefined) {
+	log("Description undefined in modopts.ini.");
+	exit(1);
+}
+
+if (opts.Link == undefined) {
+	log("Link undefined in modopts.ini.");
+	exit(1);
+}
+
+if (opts.From == undefined) {
+	log("From undefined in modopts.ini.");
+	exit(1);
+}
+
+if (opts.To == undefined) {
+	log("To undefined in modopts.ini.");
+	exit(1);
+}
+
+base = new MsgBase(opts.Sub);
+if (base == null) {
+	log('Unable to create "'+opts.Sub+'" MsgBase object.');
+	exit(1);
+}
+
+if (!base.open()) {
+	log('Unable to open sub '+opts.Sub+'.');
+	exit(1);
+}
+
+out = new File(opts.Filename+'.new');
+if (!out.open("web")) {
+	log("Unable to open temorary file "+out.name+".");
+	exit(1);
+}
+
+hdrs = [];
+for (i = base.first_msg; i <= base.last_msg; i++) {
+	hdr = base.get_msg_header(i);
+	if (hdr == null)
+		continue;
+	if (hdr.attr & MSG_DELETE)
+		continue;
+	if (hdr.attr & MSG_MODERATED) {
+		if (!(hdr.attr & MSG_VALIDATED))
+			break;
+	}
+	if (hdr.thread_back != 0)
+		continue;
+	if (hdr.from.toLowerCase() != opts.From.toLowerCase() || hdr.to.toLowerCase() != opts.To.toLowerCase())
+		continue;
+	if (hdr.from_net_type != NET_NONE)
+		continue;
+	hdrs.push(hdr);
+}
+
+out.write('<?xml version="1.0"?>\n<rss version="2.0">\n\t<channel>\n');
+out.write('\t\t<title>'+encode_xml(opts.Title)+'</title>\n');
+out.write('\t\t<description>'+encode_xml(opts.Description)+'</description>\n');
+out.write('\t\t<link>'+encode_xml(opts.Link)+'</link>\n');
+add_channel_opt_attribute('Language');
+add_channel_opt_attribute('Copyright');
+add_channel_opt_attribute('ManagingEditor');
+add_channel_opt_attribute('WebMaster');
+// TODO: pubDate
+out.write('\t\t<lastBuildDate>' + encode_xml((new Date()).toUTCString()) + '</lastBuildDate>\n');
+add_channel_opt_attribute('Category');
+out.write('\t\t<generator>Synchronet Podcast Script '+("$Revision$".split(' ')[1])+'</generator>\n');
+add_channel_opt_attribute('Docs');
+// TODO: cloud (fancy!)
+if (opts.TTL != undefined)
+	out.write('\t\t<ttl>'+encode_xml(opts.TTL)+'</ttl>\n');
+if (opts.ImageURL != undefined) {
+	img_title = opts.ImageTitle == undefined ? opts.Title : opts.ImageTitle;
+	img_link = opts.ImageLink == undefined ? opts.Link : opts.Link;
+	out.write('\t\t<image>\n');
+	out.write('\t\t\t<url>'+encode_xml(opts.ImageURL)+'</url>\n');
+	out.write('\t\t\t<title>'+encode_xml(img_title)+'</title>\n');
+	out.write('\t\t\t<link>'+encode_xml(img_link)+'</link>\n');
+	if (opts.ImageHeight != undefined)
+		out.write('\t\t\t<height>'+encode_xml(opts.ImageHeight)+'</height>\n');
+	if (opts.ImageWidth != undefined)
+		out.write('\t\t\t<width>'+encode_xml(opts.ImageWidth)+'</width>\n');
+}
+add_channel_opt_attribute('Rating');
+// TODO: textInput
+add_channel_opt_attribute('SkipHours');
+add_channel_opt_attribute('SkipDays');
+
+for (i=hdrs.length - 1; i >= 0; i--) {
+	body = base.get_msg_body(hdrs[i].number);
+	if (body == null)
+		continue;
+	body = word_wrap(body, 65535, 79, false).replace(/\r/g, '');
+	m = body.match(/^[\r\n\s]*([\x00-\xff]+?)[\r\n\s]+(https?:\/\/[^\r\n\s]+)[\r\n\s]*$/);
+	if (m==null)
+		continue;
+	http = new HTTPRequest();
+	item_headers = http.Head(m[2]);
+	if (item_headers == undefined)
+		continue;
+	if (item_headers['Content-Type'] == undefined || item_headers['Content-Length'] == undefined) {
+		log("HEAD request of "+m[2]+" did not return either Content-Type or Content-Length");
+		continue;
+	}
+	item_length = item_headers['Content-Length'][0] + 0;
+	item_type = item_headers['Content-Type'][0].replace(/^\s*(.*?)\s*/, "$1");
+	item = '\t\t<item>\n';
+	item += '\t\t\t<title>'+encode_xml(hdrs[i].subject)+'</title>\n';
+	// TODO: HTML integration required here for link
+	item += '\t\t\t<link>'+encode_xml(opts.Link)+'</link>\n';
+	item += '\t\t\t<description>'+encode_xml(m[1])+'</description>\n';
+	// TODO: author?
+	// TODO: category?
+	// TODO: HTML integration required here for <comments> tag.
+	item += '\t\t\t<enclosure url="'+encode_xml(m[2])+'" length="'+item_length+'" type="'+item_type+'" />\n';
+	item += '\t\t\t<guid>'+encode_xml(hdrs[i].id)+'</guid>\n';
+	item += '\t\t\t<pubDate>'+encode_xml((new Date(hdrs[i].when_written_time * 1000)).toUTCString())+'</pubDate>\n';
+	// TODO: source?
+	item += '\t\t</item>\n';
+	out.write(item);
+}
+
+out.write('\t</channel>\n');
+out.write('</rss>\n');
+out.close();
+if (!file_rename(out.name, opts.Filename)) {
+	log("Unable to rename "+out.name+" to "+opts.Filename+".");
+	file_remove(out.name);
+	exit(1);
+}