prosody-modules
0d8cc6971cdb
mod_http_index/mod_http_index.lua

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mod_http_index/mod_http_index.lua @ 1573:0d8cc6971cdb

mod_http_index: Generates an index of local HTTP apps
author Kim Alvefur <zash@zash.se>
date Thu, 20 Nov 2014 14:48:46 +0100
child 1825:1b5c817cb642
line wrap: on
line diff
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mod_http_index/mod_http_index.lua	Thu Nov 20 14:48:46 2014 +0100
@@ -0,0 +1,145 @@
+local st = require "util.stanza";
+local url = require"socket.url";
+
+module:depends"http";
+
+-- local dump = require"util.serialization".new"dump".serialize;
+
+local function template(data)
+	--[[ DOC
+	Like util.template, but deals with plain text
+	Returns a closure that is called with a table of values
+	{name} is substituted for values["name"] and is XML escaped
+	{name!} is substituted without XML escaping
+	{name?} is optional and is replaced with an empty string if no value exists
+	]]
+	return function(values)
+		return (data:gsub("{([^}]-)(%p?)}", function (name, opt)
+			local value = values[name];
+			if value then
+				if opt ~= "!" then
+					return st.xml_escape(value);
+				end
+				return value;
+			elseif opt == "?" then
+				return "";
+			end
+		end));
+	end
+end
+
+-- TODO Move templates into files
+local base = template(template[[
+<!DOCTYPE html>
+<html>
+<head>
+<meta charset="utf-8">
+<meta name="viewport" content="width=device-width, initial-scale=1">
+<meta name="generator" value="prosody/{prosody_version} mod_{mod_name}">
+<link rel="canonical" href="{canonical}">
+<title>{title}</title>
+<style>
+body{background-color:#eeeeec;margin:1ex 0;padding-bottom:3em;font-family:Arial,Helvetica,sans-serif;}
+header,footer{margin:1ex 1em;}
+footer{font-size:smaller;color:#babdb6;}
+.content{background-color:white;padding:1em;list-style-position:inside;}
+nav{font-size:large;margin:1ex 1ex;clear:both;line-height:1.5em;}
+nav a{padding: 1ex;text-decoration:none;}
+nav a[rel="up"]{font-size:smaller;}
+nav a[rel="prev"]{float:left;}
+nav a[rel="next"]{float:right;}
+nav a[rel="next::after"]{content:" →";}
+nav a[rel="prev::before"]{content:"← ";}
+nav a:empty::after,nav a:empty::before{content:""}
+@media screen and (min-width: 460px) {
+nav{font-size:x-large;margin:1ex 1em;}
+}
+a:link,a:visited{color:#2e3436;text-decoration:none;}
+a:link:hover,a:visited:hover{color:#3465a4;}
+ul,ol{padding:0;}
+li{list-style:none;}
+hr{visibility:hidden;clear:both;}
+br{clear:both;}
+li time{float:right;font-size:small;opacity:0.2;}
+li:hover time{opacity:1;}
+.room-list .description{font-size:smaller;}
+q.body::before,q.body::after{content:"";}
+.presence .verb{font-style:normal;color:#30c030;}
+.presence.unavailable .verb{color:#c03030;}
+</style>
+</head>
+<body>
+<header>
+<h1>{title}</h1>
+{header!}
+</header>
+<hr>
+<div class="content">
+{body!}
+</div>
+<hr>
+<footer>
+{footer!}
+<br>
+<div class="powered-by">Prosody {prosody_version?}</div>
+</footer>
+</body>
+</html>
+]] { prosody_version = prosody.version, mod_name = module.name });
+
+local canonical = module:http_url(nil, "/");
+local page_template = template(base{
+	canonical = canonical;
+	title = "HTTP stuff";
+	header = "";
+	body = [[
+<nav>
+<ul>
+{lines!}
+</ul>
+</nav>
+]];
+	footer = "";
+});
+local line_template = template[[
+<li><a href="{url}" title="{module}">{name}</a></li>
+]];
+
+local function relative(base, link)
+	base = url.parse(base);
+	link = url.parse(link);
+	for k,v in pairs(base) do
+		if link[k] == v then
+			link[k] = nil;
+		end
+	end
+	return url.build(link);
+end
+
+local function handler(event)
+	local items = module:get_host_items("http-provider");
+	local item;
+	for i = 1, #items do
+		item = items[i];
+		if module.name ~= item._provided_by then
+			items[i] = line_template{
+				name = item.name;
+				module = "mod_" .. item._provided_by;
+				url = relative(canonical, module:http_url(item.name, item.default_path));
+			};
+		else
+			items[i] = "";
+		end
+	end
+	event.response.headers.content_type = "text/html";
+	return page_template{
+		lines = table.concat(items);
+	};
+end
+
+module:provides("http", {
+	route = {
+		["GET /"] = handler;
+	};
+	default_path = "/";
+});