luci-app-vnstat2: add application

This adds an application for vnStat version 2.

Signed-off-by: Jan Hoffmann <jan@3e8.eu>

applications/luci-app-vnstat2/Makefile

@@ -0,0 +1,13 @@
+# This is free software, licensed under the Apache License, Version 2.0
+
+include $(TOPDIR)/rules.mk
+
+LUCI_TITLE:=LuCI Support for vnStat 2
+LUCI_DEPENDS:=+luci-lib-jsonc +vnstat2 +vnstati2
+
+PKG_LICENSE:=Apache-2.0
+PKG_MAINTAINER:=Jan Hoffmann <jan@3e8.eu>
+
+include ../../luci.mk
+
+# call BuildPackage - OpenWrt buildroot signature

applications/luci-app-vnstat2/htdocs/luci-static/resources/view/vnstat2/config.js

@@ -0,0 +1,109 @@
+// This is free software, licensed under the Apache License, Version 2.0
+
+'use strict';
+'require fs';
+'require ui';
+'require uci';
+'require form';
+'require tools.widgets as widgets';
+
+return L.view.extend({
+	handleDeleteModal: function(m, iface, ev) {
+		L.showModal(_('Delete interface <em>%h</em>').format(iface), [
+			E('p', _('The interface will be removed from the database permanently. This cannot be undone.')),
+			E('div', { 'class': 'right' }, [
+				E('div', {
+					'class': 'btn',
+					'click': L.hideModal
+				}, _('Cancel')),
+				' ',
+				E('div', {
+					'class': 'btn cbi-button-negative',
+					'click': ui.createHandlerFn(this, 'handleDelete', m, iface)
+				}, _('Delete'))
+			])
+		]);
+	},
+
+	handleDelete: function(m, iface, ev) {
+		return fs.exec('/usr/bin/vnstat', ['--remove', '-i', iface, '--force'])
+			.then(L.bind(m.render, m))
+			.catch(function(e) {
+				ui.addNotification(null, E('p', e.message));
+			})
+			.finally(L.hideModal);
+	},
+
+	render: function() {
+		var m, s, o;
+
+		m = new form.Map('vnstat', _('vnStat'), _('vnStat is a network traffic monitor for Linux that keeps a log of network traffic for the selected interface(s).'));
+
+		s = m.section(form.TypedSection, 'vnstat', _('Interfaces'));
+		s.anonymous = true;
+		s.addremove = false;
+
+		o = s.option(widgets.DeviceSelect, 'interface', _('Monitor interfaces'), _('The selected interfaces are automatically added to the vnStat database upon startup.'));
+		o.rmempty = true;
+		o.multiple = true;
+		o.noaliases = true;
+		o.nobridges = false;
+		o.noinactive = false;
+		o.nocreate = false;
+
+
+		o = s.option(form.DummyValue, '_database');
+
+		o.load = function(section_id) {
+			return fs.exec('/usr/bin/vnstat', ['--json', 'f', '1']).then(L.bind(function(result) {
+				var databaseInterfaces = [];
+				if (result.code == 0) {
+					var vnstatData = JSON.parse(result.stdout);
+					for (var i = 0; i < vnstatData.interfaces.length; i++) {
+						databaseInterfaces.push(vnstatData.interfaces[i].name);
+					}
+				}
+
+				var configInterfaces = uci.get_first('vnstat', 'vnstat', 'interface') || [];
+
+				this.interfaces = databaseInterfaces.filter(function(iface) {
+					return configInterfaces.indexOf(iface) == -1;
+				});
+			}, this));
+		};
+
+		o.render = L.bind(function(view, section_id) {
+			var table = E('div', { 'class': 'table' }, [
+				E('div', { 'class': 'tr table-titles' }, [
+					E('div', { 'class': 'th' }, _('Interface')),
+					E('div', { 'class': 'th right' }, _('Delete'))
+				])
+			]);
+
+			var rows = [];
+
+			for (var i = 0; i < this.interfaces.length; i++) {
+				rows.push([
+					this.interfaces[i],
+					E('button', {
+						'class': 'btn cbi-button-remove',
+						'click': ui.createHandlerFn(view, 'handleDeleteModal', m, this.interfaces[i])
+					}, [ _('Delete…') ])
+				]);
+			}
+
+			cbi_update_table(table, rows, E('em', _('No unconfigured interfaces found in database.')));
+
+			return E([], [
+				E('h3', _('Unconfigured interfaces')),
+				E('div', { 'class': 'cbi-section-descr' },
+				         _('These interfaces are present in the vnStat database, but are not configured above.')),
+				table
+			]);
+		}, o, this);
+
+
+		return m.render();
+	}
+});
+

applications/luci-app-vnstat2/luasrc/controller/vnstat2.lua

@@ -0,0 +1,50 @@
+module("luci.controller.vnstat2", package.seeall)
+
+function index()
+	if not nixio.fs.access("/etc/config/vnstat") then
+		return
+	end
+
+	entry({"admin", "status", "vnstat2"}, alias("admin", "status", "vnstat2", "graphs"), _("vnStat Traffic Monitor"), 90)
+	entry({"admin", "status", "vnstat2", "graphs"}, template("vnstat2/graphs"), _("Graphs"), 1)
+	entry({"admin", "status", "vnstat2", "config"}, view("vnstat2/config"), _("Configuration"), 2)
+	entry({"admin", "status", "vnstat2", "graph"}, call("action_graph"), nil, 3)
+end
+
+function action_graph()
+	local util = require "luci.util"
+
+	local param = luci.http.formvalue
+
+	local iface = param("iface")
+	local style = param("style")
+
+	if not iface or not style then
+		luci.http.status(404, "Not Found")
+		return
+	end
+
+	local style_valid = false
+	for _, v in ipairs({"s", "t", "5", "h", "d", "m", "y"}) do
+		if v == style then
+			style_valid = true
+			break
+		end
+	end
+
+	if not style_valid then
+		luci.http.status(404, "Not Found")
+		return
+	end
+
+	luci.http.prepare_content("image/png")
+
+	local cmd = "vnstati -i %s -%s -o -" % {
+		util.shellquote(iface),
+		util.shellquote(style)
+	}
+
+	local image = io.popen(cmd)
+	luci.http.write(image:read("*a"))
+	image:close()
+end

applications/luci-app-vnstat2/luasrc/view/vnstat2/graphs.htm

@@ -0,0 +1,55 @@
+<%#
+ This is free software, licensed under the Apache License, Version 2.0
+-%>
+
+<%-
+
+local util = require "luci.util"
+local json = require "luci.jsonc"
+
+
+local ifaces = {}
+
+local data = util.exec("vnstat --json f 1 2>/dev/null")
+local content = json.parse(data)
+if type(content) == "table" then
+	for _, iface in pairs(content["interfaces"]) do
+		table.insert(ifaces, iface["name"])
+	end
+end
+
+
+local function render_section(style, title)
+	%><div class="cbi-section" data-tab="<%=style%>" data-tab-title="<%=title%>"><%
+
+	for _, iface in ipairs(ifaces) do
+		%><p><img src="<%=url("admin/status/vnstat2/graph")%>?iface=<%=iface%>&amp;style=<%=style%>" alt="" style="max-width:100%" /></p><%
+	end
+
+	%></div><%
+end
+
+
+-%>
+
+<%+header%>
+
+<h2 name="content"><%:vnStat Graphs%></h2>
+
+<div>
+	<%
+	if #ifaces == 0 then
+		%><p><em><%:No monitored interfaces have been found. Go to the configuration to enable monitoring for one or more interfaces.%></em></p><%
+	else
+		render_section("s", translate("Summary"))
+		render_section("t", translate("Top"))
+		render_section("5", translate("5 Minute"))
+		render_section("h", translate("Hourly"))
+		render_section("d", translate("Daily"))
+		render_section("m", translate("Monthly"))
+		render_section("y", translate("Yearly"))
+	end
+	%>
+</div>
+
+<%+footer%>

applications/luci-app-vnstat2/po/templates/vnstat2.pot

@@ -0,0 +1,117 @@
+msgid ""
+msgstr "Content-Type: text/plain; charset=UTF-8"
+
+#: applications/luci-app-vnstat2/luasrc/view/vnstat2/graphs.htm:46
+msgid "5 Minute"
+msgstr ""
+
+#: applications/luci-app-vnstat2/htdocs/luci-static/resources/view/vnstat2/config.js:18
+msgid "Cancel"
+msgstr ""
+
+#: applications/luci-app-vnstat2/luasrc/controller/vnstat2.lua:10
+msgid "Configuration"
+msgstr ""
+
+#: applications/luci-app-vnstat2/luasrc/view/vnstat2/graphs.htm:48
+msgid "Daily"
+msgstr ""
+
+#: applications/luci-app-vnstat2/htdocs/luci-static/resources/view/vnstat2/config.js:23
+#: applications/luci-app-vnstat2/htdocs/luci-static/resources/view/vnstat2/config.js:80
+msgid "Delete"
+msgstr ""
+
+#: applications/luci-app-vnstat2/htdocs/luci-static/resources/view/vnstat2/config.js:12
+msgid "Delete interface <em>%h</em>"
+msgstr ""
+
+#: applications/luci-app-vnstat2/htdocs/luci-static/resources/view/vnstat2/config.js:92
+msgid "Delete…"
+msgstr ""
+
+#: applications/luci-app-vnstat2/luasrc/controller/vnstat2.lua:9
+msgid "Graphs"
+msgstr ""
+
+#: applications/luci-app-vnstat2/luasrc/view/vnstat2/graphs.htm:47
+msgid "Hourly"
+msgstr ""
+
+#: applications/luci-app-vnstat2/htdocs/luci-static/resources/view/vnstat2/config.js:79
+msgid "Interface"
+msgstr ""
+
+#: applications/luci-app-vnstat2/htdocs/luci-static/resources/view/vnstat2/config.js:43
+msgid "Interfaces"
+msgstr ""
+
+#: applications/luci-app-vnstat2/htdocs/luci-static/resources/view/vnstat2/config.js:47
+msgid "Monitor interfaces"
+msgstr ""
+
+#: applications/luci-app-vnstat2/luasrc/view/vnstat2/graphs.htm:49
+msgid "Monthly"
+msgstr ""
+
+#: applications/luci-app-vnstat2/luasrc/view/vnstat2/graphs.htm:42
+msgid ""
+"No monitored interfaces have been found. Go to the configuration to enable "
+"monitoring for one or more interfaces."
+msgstr ""
+
+#: applications/luci-app-vnstat2/htdocs/luci-static/resources/view/vnstat2/config.js:96
+msgid "No unconfigured interfaces found in database."
+msgstr ""
+
+#: applications/luci-app-vnstat2/luasrc/view/vnstat2/graphs.htm:44
+msgid "Summary"
+msgstr ""
+
+#: applications/luci-app-vnstat2/htdocs/luci-static/resources/view/vnstat2/config.js:13
+msgid ""
+"The interface will be removed from the database permanently. This cannot be "
+"undone."
+msgstr ""
+
+#: applications/luci-app-vnstat2/htdocs/luci-static/resources/view/vnstat2/config.js:47
+msgid ""
+"The selected interfaces are automatically added to the vnStat database upon "
+"startup."
+msgstr ""
+
+#: applications/luci-app-vnstat2/htdocs/luci-static/resources/view/vnstat2/config.js:101
+msgid ""
+"These interfaces are present in the vnStat database, but are not configured "
+"above."
+msgstr ""
+
+#: applications/luci-app-vnstat2/luasrc/view/vnstat2/graphs.htm:45
+msgid "Top"
+msgstr ""
+
+#: applications/luci-app-vnstat2/htdocs/luci-static/resources/view/vnstat2/config.js:99
+msgid "Unconfigured interfaces"
+msgstr ""
+
+#: applications/luci-app-vnstat2/luasrc/view/vnstat2/graphs.htm:50
+msgid "Yearly"
+msgstr ""
+
+#: applications/luci-app-vnstat2/htdocs/luci-static/resources/view/vnstat2/config.js:41
+msgid "vnStat"
+msgstr ""
+
+#: applications/luci-app-vnstat2/luasrc/view/vnstat2/graphs.htm:37
+msgid "vnStat Graphs"
+msgstr ""
+
+#: applications/luci-app-vnstat2/luasrc/controller/vnstat2.lua:8
+msgid "vnStat Traffic Monitor"
+msgstr ""
+
+#: applications/luci-app-vnstat2/htdocs/luci-static/resources/view/vnstat2/config.js:41
+msgid ""
+"vnStat is a network traffic monitor for Linux that keeps a log of network "
+"traffic for the selected interface(s)."
+msgstr ""

applications/luci-app-vnstat2/root/usr/share/rpcd/acl.d/luci-app-vnstat2.json

@@ -0,0 +1,12 @@
+{
+	"luci-app-vnstat2": {
+		"description": "Grant access to LuCI app vnstat2",
+		"write": {
+			"file": {
+				"/usr/bin/vnstat": [ "exec" ]
+			},
+			"uci": [ "vnstat" ]
+		}
+	}
+}
+