--- /dev/null
+--[[
+
+LuCI LXC module
+
+Copyright (C) 2014, Cisco Systems, Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+Author: Petar Koretic <petar.koretic@sartura.hr>
+
+]]--
+
+module("luci.controller.lxc", package.seeall)
+
+require "ubus"
+local conn = ubus.connect()
+if not conn then
+ error("Failed to connect to ubus")
+end
+
+
+function fork_exec(command)
+ local pid = nixio.fork()
+ if pid > 0 then
+ return
+ elseif pid == 0 then
+ -- change to root dir
+ nixio.chdir("/")
+
+ -- patch stdin, out, err to /dev/null
+ local null = nixio.open("/dev/null", "w+")
+ if null then
+ nixio.dup(null, nixio.stderr)
+ nixio.dup(null, nixio.stdout)
+ nixio.dup(null, nixio.stdin)
+ if null:fileno() > 2 then
+ null:close()
+ end
+ end
+
+ -- replace with target command
+ nixio.exec("/bin/sh", "-c", command)
+ end
+end
+
+function index()
+ page = node("admin", "services", "lxc")
+ page.target = cbi("lxc")
+ page.title = _("LXC Containers")
+ page.order = 70
+
+ page = entry({"admin", "services", "lxc_create"}, call("lxc_create"), nil)
+ page.leaf = true
+
+ page = entry({"admin", "services", "lxc_action"}, call("lxc_action"), nil)
+ page.leaf = true
+
+ page = entry({"admin", "services", "lxc_get_downloadable"}, call("lxc_get_downloadable"), nil)
+ page.leaf = true
+
+ page = entry({"admin", "services", "lxc_configuration_get"}, call("lxc_configuration_get"), nil)
+ page.leaf = true
+
+ page = entry({"admin", "services", "lxc_configuration_set"}, call("lxc_configuration_set"), nil)
+ page.leaf = true
+
+end
+
+function lxc_get_downloadable()
+ luci.http.prepare_content("application/json")
+
+ local f = io.popen('uname -m', 'r')
+ local target = f:read('*a')
+ f:close()
+ target = target:gsub("^%s*(.-)%s*$", "%1")
+
+ local templates = {}
+
+ local f = io.popen('lxc-create -n just_want_to_list_available_lxc_templates -t download -- --list', 'r')
+
+ for line in f:lines() do
+ local dist,version = line:match("^(%S+)%s+(%S+)%s+" .. target .. "%s+default%s+%S+$")
+ if dist~=nil and version~=nil then templates[#templates + 1] = dist .. ":" .. version end
+ end
+
+ f:close()
+ luci.http.write_json(templates)
+end
+
+function lxc_create(lxc_name, lxc_template)
+ luci.http.prepare_content("text/plain")
+
+ local uci = require("uci").cursor()
+
+ local url = uci:get("lxc", "lxc", "url")
+
+ if not pcall(dofile, "/etc/openwrt_release") then
+ return luci.http.write("1")
+ end
+
+ local f = io.popen('uname -m', 'r')
+ local target = f:read('*a')
+ f:close()
+ target = target:gsub("^%s*(.-)%s*$", "%1")
+
+ local lxc_dist = lxc_template:gsub("(.*):(.*)", '%1')
+ local lxc_release = lxc_template:gsub("(.*):(.*)", '%2')
+
+ local data = conn:call("lxc", "create", { name = lxc_name, template = "download", args = { "--server", url, "--no-validate", "--dist", lxc_dist, "--release", lxc_release, "--arch", target } } )
+
+ luci.http.write(data)
+end
+
+function lxc_action(lxc_action, lxc_name)
+ luci.http.prepare_content("application/json")
+
+ local data, ec = conn:call("lxc", lxc_action, lxc_name and { name = lxc_name} or {} )
+
+ luci.http.write_json(ec and {} or data)
+end
+
+function lxc_get_config_path()
+ local f = io.open("/etc/lxc/lxc.conf", "r")
+ local content = f:read("*all")
+ f:close()
+ local ret = content:match('^%s*lxc.lxcpath%s*=%s*([^%s]*)')
+ if ret then
+ return ret .. "/"
+ else
+ return "/srv/lxc/"
+ end
+end
+
+function lxc_configuration_get(lxc_name)
+ luci.http.prepare_content("text/plain")
+
+ local f = io.open(lxc_get_config_path() .. lxc_name .. "/config", "r")
+ local content = f:read("*all")
+ f:close()
+
+ luci.http.write(content)
+end
+
+function lxc_configuration_set(lxc_name)
+ luci.http.prepare_content("text/plain")
+
+ local lxc_configuration = luci.http.formvalue("lxc_configuration")
+
+ if lxc_configuration == nil then
+ return luci.http.write("1")
+ end
+
+ local f, err = io.open(lxc_get_config_path() .. lxc_name .. "/config","w+")
+ if not f then
+ return luci.http.write("2")
+ end
+
+ f:write(lxc_configuration)
+ f:close()
+
+ luci.http.write("0")
+end
+
--- /dev/null
+<%#
+
+LuCI LXC module
+
+Copyright (C) 2014, Cisco Systems, Inc.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+Author: Petar Koretic <petar.koretic@sartura.hr>
+
+-%>
+
+<fieldset class="cbi-section">
+ <legend><%:Available Containers%></legend>
+ <div class="cbi-section-node">
+ <table id="t_lxc_list" class="cbi-section-table">
+ <tr class="cbi-section-table-titles">
+ <th class="cbi-section-table-cell"><%:Name%></th>
+ <th class="cbi-section-table-cell"><%:Status%></th>
+ <th class="cbi-section-table-cell"><%:Actions%></th>
+ </tr>
+ </table>
+ </div>
+</fieldset>
+
+<fieldset class="cbi-section">
+ <span id="lxc-list-output"></span>
+</fieldset>
+
+<hr/>
+<fieldset class="cbi-section">
+ <legend><%:Create New Container%></legend>
+ <div class="cbi-section-node">
+ <table id="t_lxc_create" class="cbi-section-table">
+ <tr class="cbi-section-table-titles">
+ <th class="cbi-section-table-cell"><%:Name%></th>
+ <th class="cbi-section-table-cell"><%:Template%></th>
+ <th class="cbi-section-table-cell"><%:Actions%></th>
+ </tr>
+ <tr id="tr_holder">
+ <td>
+ <input type="text" id="tx_name" placeholder="<%:Enter new name%>" value='' />
+ </td>
+ <td>
+ <select id="s_template" class="cbi-input-select cbi-button">
+ </select>
+ </td>
+ <td>
+ <input type="button" id="bt_create" value="<%:Create%>" onclick="lxc_create(tr_holder)" class="cbi-button cbi-button-add" />
+ <span id="lxc-add-loader" style="display:inline-block; width:16px; height:16px; margin:0 5px"></span>
+ </td>
+ </tr>
+ </table>
+ </div>
+</fieldset>
+
+<fieldset class="cbi-section">
+ <span id="lxc-add-output"></span>
+</fieldset>
+
+<hr/>
+
+<script type="text/javascript" src="<%=resource%>/cbi.js"></script>
+<script type="text/javascript">//<![CDATA[
+
+ window.img = { "red" : "<%=resource%>/cbi/red.gif", "green" : "<%=resource%>/cbi/green.gif", "purple" : "<%=resource%>/cbi/purple.gif" }
+ window.states = { "STOPPED" : "red", "RUNNING" : "green", "FROZEN" : "purple"}
+
+ var t_lxc_list = document.getElementById('t_lxc_list');
+ var loader_html = '<img src="<%=resource%>/icons/loading.gif" alt="<%:Loading%>" width="16" height="16" style="vertical-align:middle" /> ';
+ var timeout_msg = 0
+ var output_list = document.getElementById("lxc-list-output")
+ var output_add = document.getElementById("lxc-add-output")
+ var loader_add = document.getElementById("lxc-add-loader")
+
+ function lxc_create(tr)
+ {
+ var lxc_name = tr.querySelector("#tx_name").value.trim()
+ var lxc_template = tr.querySelector("#s_template").value
+ var bt_create = tr.querySelector("#bt_create")
+
+ if (t_lxc_list.querySelector("[data-id='" + lxc_name + "']") != null)
+ return info_message(output_add, "Container with that name already exists!", 4000)
+
+ bt_create.disabled = true
+ output_add.innerHTML = ''
+
+ if (!lxc_name || !lxc_name.length)
+ {
+ bt_create.disabled = false
+ return info_message(output_add, "Name cannot be empty!", 4000)
+ }
+
+ loading(loader_add)
+
+ new XHR().get('<%=luci.dispatcher.build_url("admin", "services")%>/lxc_create/' + '%h/%h'.format(lxc_name, lxc_template) , null,
+ function(x)
+ {
+ bt_create.disabled = false
+ loading(loader_add, 0)
+
+ if (!x)
+ info_message(output_add, "Container creation failed!")
+ })
+ }
+
+ function lxc_create_template(lxc_name, lxc_state)
+ {
+ var info_row = t_lxc_list.querySelector("#empty")
+ if (info_row)
+ t_lxc_list.deleteRow(1)
+
+ var actions = ''
+ actions += '<input type="button" onclick="action_handler(this)" data-action="start" value="<%:Start%>" class="cbi-button cbi-button-apply" />'
+ actions+= '<input type="button" onclick="action_handler(this)" data-action="stop" value="<%:Stop%>" class="cbi-button cbi-button-reset" />'
+ actions+= '<input type="button" onclick="action_handler(this)" data-action="destroy" value="<%:Delete%>" class="cbi-button cbi-button-remove" />'
+ actions+= ' <select class="cbi-input-select cbi-button" onchange="action_more_handler(this)">\
+ <option selected disabled>more</option>\
+ <option>configure</option>\
+ <option>freeze</option>\
+ <option>unfreeze</option>\
+ <option>reboot</option>\
+ </select>'
+ actions+= '<span data-loader style="display:inline-block; width:16px; height:16px; margin:0 5px"></span>'
+
+ var row = t_lxc_list.insertRow(-1)
+ var cell = row.insertCell(-1)
+ cell.innerHTML = '%q%h%q'.format("<strong>", lxc_name, "</strong>")
+ cell.width = "30%"
+ cell.setAttribute("data-id", lxc_name)
+
+ cell = row.insertCell(-1)
+ cell.width = "20%"
+ cell.innerHTML = "<img src='"+window.img[lxc_state]+"'/>"
+
+ cell = row.insertCell(-1)
+ cell.width = "50%"
+ cell.innerHTML = actions
+ }
+
+ function action_handler(self)
+ {
+ var action = self.getAttribute("data-action");
+
+ var bt_action = self
+ var lxc_name = self.parentNode.parentNode.children[0].getAttribute('data-id')
+ var status_img = self.parentNode.parentNode.querySelector('img')
+ var loader = self.parentNode.querySelector('[data-loader]')
+
+ bt_action.disabled = true
+
+ if (action == "stop")
+ {
+ loading(loader)
+
+ new XHR().get('<%=luci.dispatcher.build_url("admin", "services")%>/lxc_action/' + '%h/%h'.format(action, lxc_name), null,
+ function(x, ec)
+ {
+ loading(loader, 0)
+ bt_action.disabled = false
+
+ if (!x || ec)
+ return info_message(output_list,"Action failed!")
+
+ set_status(status_img, "red")
+
+ });
+ }
+
+ else if (action == "start")
+ {
+ loading(loader)
+
+ new XHR().get('<%=luci.dispatcher.build_url("admin", "services")%>/lxc_action/' + '%h/%h'.format(action, lxc_name), null,
+ function(x, data)
+ {
+ loading(loader, 0)
+ bt_action.disabled = false
+
+ //FIXME: uncomment after fixing 'lxc-start'
+ if (!x /*|| ec */)
+ return info_message(output_list,"Action failed!")
+
+ //FIXME: uncomment after fixing 'lxc-start'
+ //set_status(status_img, "green")
+ });
+ }
+
+ else if (action == "destroy")
+ {
+ if (!confirm("This will completely remove LXC container from the disk. Are you sure? (container will be stopped if running)"))
+ return
+
+ loading(loader)
+
+ new XHR().get('<%=luci.dispatcher.build_url("admin", "services")%>/lxc_action/' + '%h/%h'.format(action, lxc_name), null,
+ function(x, ec)
+ {
+ loading(loader, 0)
+ bt_action.disabled = false
+
+ if (!x || ec)
+ return info_message(output_list,"Action failed!")
+
+ var row = self.parentNode.parentNode
+ row.parentNode.removeChild(row)
+
+ });
+ }
+ }
+
+ function lxc_configure_handler(self)
+ {
+ var td = self.parentNode
+ var textarea = td.querySelector('[data-id]')
+ var lxc_name = textarea.getAttribute('data-id')
+ var lxc_configuration = textarea.value
+
+ new XHR().post('<%=luci.dispatcher.build_url("admin", "services")%>/lxc_configuration_set/' + lxc_name, "lxc_configuration=" + encodeURIComponent(lxc_configuration) ,
+ function(x)
+ {
+ if (!x || x.responseText != "0")
+ return info_message(output_list,"Action failed!")
+
+ info_message(output_list,"LXC configuration updated")
+ var row = td.parentNode
+ row.parentNode.removeChild(row)
+ })
+ }
+
+ function lxc_rename_template(lxc_name)
+ {
+ var h = '\
+ <input data-id="'+ lxc_name + '" type="text" placeholder="Enter new name" /> \
+ <input data-id="bt_confirm" onclick="lxc_rename_handler(this)" type="button" class="cbi-button" value="Confirm" />'
+
+ return h
+ }
+
+ function lxc_configure_template(lxc_name, lxc_configuration)
+ {
+ var h = '\
+ <textarea data-id="'+ lxc_name + '" rows="20" style="width:100%">'+ lxc_configuration +'</textarea> \
+ <input data-id="bt_confirm" onclick="lxc_configure_handler(this)" type="button" class="cbi-button" value="Confirm" />'
+
+ return h
+ }
+
+ function action_more_handler(self)
+ {
+ var lxc_name = self.parentNode.parentNode.querySelector('[data-id]').getAttribute('data-id')
+ var loader = self.parentNode.parentNode.querySelector('[data-loader]')
+
+ var option = self.options[self.selectedIndex].text
+
+ self.value = "more"
+
+ switch (option)
+ {
+ case "configure":
+ var tr = document.createElement('tr')
+ var row = self.parentNode.parentNode
+ var next_row = row.nextSibling
+ if (next_row && next_row.getAttribute('data-action') !== null)
+ row.parentNode.removeChild(next_row)
+
+ new XHR().get('<%=luci.dispatcher.build_url("admin", "services")%>/lxc_configuration_get/' + lxc_name, null,
+ function(x)
+ {
+ tr.innerHTML="<td colspan='" + row.cells.length + "'>" + lxc_configure_template(lxc_name, x.responseText) + "</td>"
+ tr.setAttribute('data-action','')
+ row.parentNode.insertBefore(tr, row.nextSibling)
+ })
+
+ break
+
+ case "freeze":
+ var tr = self.parentNode.parentNode
+ var img = tr.querySelector('img')
+ if(img.getAttribute('src') != window.img["green"])
+ return info_message(output_list,"Container is not running!")
+
+ loading(loader)
+ new XHR().get('<%=luci.dispatcher.build_url("admin", "services")%>/lxc_action/' + '%h/%h'.format(option, lxc_name), null,
+ function(x, ec)
+ {
+ loading(loader, 0)
+ if (!x || ec)
+ return info_message(output_list,"Action failed!")
+
+ set_status(img, "purple")
+ })
+
+ break
+
+ case "unfreeze":
+ var tr = self.parentNode.parentNode
+ var img = tr.querySelector('img')
+
+ if(img.getAttribute('src') != window.img["purple"])
+ return info_message(output_list,"Container is not frozen!")
+
+ loading(loader)
+ new XHR().get('<%=luci.dispatcher.build_url("admin", "services")%>/lxc_action/' + '%h/%h'.format(option, lxc_name), null,
+ function(x, ec)
+ {
+ loading(loader, 0)
+ if (!x || ec)
+ return info_message(output_list,"Action failed!")
+
+ set_status(img, "green")
+ })
+
+ break
+
+ case "reboot":
+ var tr = self.parentNode.parentNode
+ var img = tr.querySelector('img')
+ if(img.getAttribute('src') != window.img["green"])
+ return info_message(output_list,"Container is not running!")
+
+ if (!confirm("Are you sure?"))
+ return
+
+ loading(loader)
+ new XHR().get('<%=luci.dispatcher.build_url("admin", "services")%>/lxc_action/' + '%h/%h'.format(option, lxc_name), null,
+ function(x, ec)
+ {
+ loading(loader, 0)
+ if (!x || ec)
+ return info_message(output_list,"Action failed!")
+
+ info_message(output_list,"LXC rebooted")
+ })
+ break
+ }
+
+ }
+
+ function set_empty(t_lxc_list)
+ {
+ if (document.getElementById('empty') !== null)
+ return
+
+ var row_count = t_lxc_list.rows.length;
+ while(--row_count) t_lxc_list.deleteRow(row_count);
+
+ var row = t_lxc_list.insertRow(-1);
+ row.id = 'empty'
+ var cell = row.insertCell(0);
+ cell.colSpan = 4;
+ cell.innerHTML = '<em><br />There are no containers available yet.</em>';
+ }
+
+ function lxc_list_update()
+ {
+ XHR.poll(4, '<%=luci.dispatcher.build_url("admin", "services")%>/lxc_action/list', null,
+ function(x, data)
+ {
+ if (!x) return;
+
+ var lxc_count = Object.keys(data).length
+ if (!data || !lxc_count)
+ return set_empty(t_lxc_list)
+
+ if (document.getElementById('empty') !== null)
+ t_lxc_list.deleteRow(1);
+
+ var lxcs = t_lxc_list.querySelectorAll('td[data-id]')
+ var lxc_name_table = {}
+ for (var i = 0, len = lxcs.length; i < len; i++)
+ {
+ var lxc_name = lxcs[i].getAttribute('data-id')
+ if (!(lxc_name in data))
+ {
+ var row = t_lxc_list.querySelector("[data-id='" + lxc_name + "']").parentNode
+ row.parentNode.removeChild(row)
+ continue
+ }
+
+ lxc_name_table[lxc_name] = lxcs[i].parentNode.querySelector('img')
+ }
+
+ for(var key in data)
+ {
+ var lxc_name = key
+ var state = window.states[data[key]]
+
+ if (!(lxc_name in lxc_name_table))
+ lxc_create_template(lxc_name, state)
+
+ else if (state != get_status(lxc_name_table[lxc_name]))
+ set_status(lxc_name_table[lxc_name], state)
+ }
+
+ })
+ }
+
+ function loading(elem, state)
+ {
+ state = (typeof state === 'undefined') ? 1 : state
+
+ if (state === 1)
+ elem.innerHTML = loader_html
+ else
+ setTimeout(function() { elem.innerHTML = ''}, 1000)
+ }
+
+ function set_status(elem, state)
+ {
+ state = (typeof state === 'undefined') ? 1 : state
+
+ setTimeout(function() { elem.setAttribute('src', window.img[state])}, 300)
+ }
+
+ function get_status(elem)
+ {
+ var src = elem.getAttribute('src')
+
+ for (var i in img)
+ {
+ if (img[i] == src)
+ return i
+ }
+ }
+
+ function info_message(output, msg, timeout)
+ {
+ timeout = timeout || 3000
+ output.innerHTML = msg
+ clearTimeout(timeout_msg)
+ timeout_msg = setTimeout(function(){ output.innerHTML=""}, timeout);
+ }
+
+ lxc_list_update()
+
+ new XHR().get('<%=luci.dispatcher.build_url("admin", "services")%>/lxc_get_downloadable', null,
+ function(x, data)
+ {
+ if (!x) return;
+
+ var lxc_count = Object.keys(data).length
+ if (!data || !lxc_count) return;
+ var select = document.getElementById("s_template");
+ for(var key in data)
+ {
+ var option = document.createElement('option');
+ option.value = data[key];
+ option.text = data[key].replace(/[_:]/g, ' ');
+ select.add(option, -1);
+ }
+ })
+
+//]]></script>
projects / project / luci.git / commitdiff
