diff options
Diffstat (limited to 'libs/web/luasrc/template.lua')
| -rw-r--r-- | libs/web/luasrc/template.lua | 119 |
1 files changed, 68 insertions, 51 deletions
diff --git a/libs/web/luasrc/template.lua b/libs/web/luasrc/template.lua index d49bceac7..c656cee8d 100644 --- a/libs/web/luasrc/template.lua +++ b/libs/web/luasrc/template.lua @@ -24,30 +24,36 @@ limitations under the License. ]]-- ---- LuCI template library. -module("luci.template", package.seeall) +local fs = require"luci.fs" +local sys = require "luci.sys" +local util = require "luci.util" +local table = require "table" +local string = require "string" +local config = require "luci.config" +local coroutine = require "coroutine" + +local tostring, pairs, loadstring = tostring, pairs, loadstring +local setmetatable, loadfile = setmetatable, loadfile +local getfenv, setfenv = getfenv, setfenv +local assert, type, error = assert, type, error -require("luci.config") -require("luci.util") -require("luci.fs") -require("luci.sys") -require("luci.http") +--- LuCI template library. +module "luci.template" -luci.config.template = luci.config.template or {} +config.template = config.template or {} -viewdir = luci.config.template.viewdir or luci.util.libpath() .. "/view" -compiledir = luci.config.template.compiledir or luci.util.libpath() .. "/view" +viewdir = config.template.viewdir or util.libpath() .. "/view" +compiledir = config.template.compiledir or util.libpath() .. "/view" -- Compile modes: --- none: Never compile, only use precompiled data from files -- memory: Always compile, do not save compiled files, ignore precompiled -- file: Compile on demand, save compiled files, update precompiled -compiler_mode = luci.config.template.compiler_mode or "memory" +compiler_mode = config.template.compiler_mode or "memory" -- Define the namespace for template modules -context = luci.util.threadlocal() +context = util.threadlocal() viewns = { include = function(name) Template(name):render(getfenv(2)) end, @@ -57,6 +63,8 @@ viewns = { -- @param template LuCI template -- @return Lua template function function compile(template) + local expr = {} + -- Search all <% %> expressions local function expr_add(ws1, skip1, command, skip2, ws2) table.insert(expr, command) @@ -65,15 +73,11 @@ function compile(template) ( #skip2 > 0 and "" or ws2 ) end - -- As "expr" should be local, we have to assign it to the "expr_add" scope - local expr = {} - luci.util.extfenv(expr_add, "expr", expr) - -- Save all expressiosn to table "expr" template = template:gsub("(%s*)<%%(%-?)(.-)(%-?)%%>(%s*)", expr_add) local function sanitize(s) - s = string.format("%q", s) + s = "%q" % s return s:sub(2, #s-1) end @@ -121,38 +125,47 @@ end --- Render a certain template. -- @param name Template name --- @param scope Scope to assign to template -function render(name, scope, ...) - scope = scope or getfenv(2) - local s, t = luci.util.copcall(Template, name) - if not s then - error(t) - else - t:render(scope, ...) - end +-- @param scope Scope to assign to template (optional) +function render(name, scope) + return Template(name):render(scope or getfenv(2)) end -- Template class -Template = luci.util.class() +Template = util.class() -- Shared template cache to store templates in to avoid unnecessary reloading -Template.cache = {} -setmetatable(Template.cache, {__mode = "v"}) +Template.cache = setmetatable({}, {__mode = "v"}) -- Constructor - Reads and compiles the template on-demand function Template.__init__(self, name) + local function _encode_filename(str) + + local function __chrenc( chr ) + return "%%%02x" % string.byte( chr ) + end + + if type(str) == "string" then + str = str:gsub( + "([^a-zA-Z0-9$_%-%.%+!*'(),])", + __chrenc + ) + end + + return str + end + self.template = self.cache[name] self.name = name -- Create a new namespace for this template - self.viewns = {} + self.viewns = {sink=self.sink} -- Copy over from general namespace - luci.util.update(self.viewns, viewns) + util.update(self.viewns, viewns) if context.viewns then - luci.util.update(self.viewns, context.viewns) + util.update(self.viewns, context.viewns) end -- If we have a cached template, skip compiling and loading @@ -161,44 +174,47 @@ function Template.__init__(self, name) end -- Enforce cache security - local cdir = compiledir .. "/" .. luci.sys.process.info("uid") + local cdir = compiledir .. "/" .. sys.process.info("uid") -- Compile and build local sourcefile = viewdir .. "/" .. name .. ".htm" - local compiledfile = cdir .. "/" .. luci.http.urlencode(name) .. ".lua" + local compiledfile = cdir .. "/" .. _encode_filename(name) .. ".lua" local err if compiler_mode == "file" then - local tplmt = luci.fs.mtime(sourcefile) - local commt = luci.fs.mtime(compiledfile) + local tplmt = fs.mtime(sourcefile) + local commt = fs.mtime(compiledfile) - if not luci.fs.mtime(cdir) then - luci.fs.mkdir(cdir, true) - luci.fs.chmod(luci.fs.dirname(cdir), "a+rxw") + if not fs.mtime(cdir) then + fs.mkdir(cdir, true) + fs.chmod(fs.dirname(cdir), "a+rxw") end -- Build if there is no compiled file or if compiled file is outdated if ((commt == nil) and not (tplmt == nil)) or (not (commt == nil) and not (tplmt == nil) and commt < tplmt) then local source - source, err = luci.fs.readfile(sourcefile) + source, err = fs.readfile(sourcefile) if source then local compiled, err = compile(source) - luci.fs.writefile(compiledfile, luci.util.get_bytecode(compiled)) + fs.writefile(compiledfile, util.get_bytecode(compiled)) + fs.chmod(compiledfile, "a-rwx,u+rw") self.template = compiled end else + assert( + sys.process.info("uid") == fs.stat(compiledfile, "uid") + and fs.stat(compiledfile, "mode") == "rw-------", + "Fatal: Cachefile is not sane!" + ) self.template, err = loadfile(compiledfile) end - elseif compiler_mode == "none" then - self.template, err = loadfile(self.compiledfile) - elseif compiler_mode == "memory" then local source - source, err = luci.fs.readfile(sourcefile) + source, err = fs.readfile(sourcefile) if source then self.template, err = compile(source) end @@ -222,14 +238,15 @@ function Template.render(self, scope) local oldfenv = getfenv(self.template) -- Put our predefined objects in the scope of the template - luci.util.resfenv(self.template) - luci.util.updfenv(self.template, scope) - luci.util.updfenv(self.template, self.viewns) + util.resfenv(self.template) + util.updfenv(self.template, scope) + util.updfenv(self.template, self.viewns) -- Now finally render the thing - local stat, err = luci.util.copcall(self.template) + local stat, err = util.copcall(self.template) if not stat then - error("Error in template %s: %s" % {self.name, err}) + setfenv(self.template, oldfenv) + error("Error in template %s: %s" % {self.name, chunk}) end -- Reset environment |