refactor: runtimes into xurfer/runtime + better URI errorhandling + added lua runtime

README.md

@@ -10,7 +10,7 @@ Developers can run it via [Lua](https://lua.org), [LÖVR](https://lovr.org) or [
 $ cd xurfer
 $ love . <url_or_file> [..]       # if you have LÖVE2D installed (>v12)
 $ lovr . <url_or_file> [..]       # if you have LÖVR installed
-$ lua main.lua <url_or_file> [..] # if you have lua installed
+$ ./main.lua <url_or_file> [..]   # if you have lua installed
 ```
 
 **Example**: lovr xurfer <a href="https://snips.sh/f/_U5-XctEVE?r=1">https://snips.sh/f/_U5-XctEVE?r=1</a>
@@ -39,8 +39,9 @@ The aim of this project is providing **a [XR Hypermedia browser](https://xrhf.is
 
 ## very hackable extensions
 
-* XURFER does everything via browser extensions.<br>
-* XURFER is the total sum of browser extensions.<br>
+* XURFER does everything via browser extensions.
+* XURFER is the total sum of browser extensions.
+* XURFER can proxy missing api-calls to cli-cmds (like [wget/curl](xurfer/runtime/lua/main.lua) via the [unixy](xurfer/ext/unixy/main.lua) extension)
 
 So you can strip/bloat however you want, or build one yourself:
 
@@ -51,3 +52,9 @@ $ ./lovr xurfer
 [i] loading 'myextension'
 ...
 ```
+
+## Security
+
+Instead of the traditional sandbox-in-a-browser-model (Chromium/Firefox e.g.), we suggest running XURFER via [bubblewrap](https://github.com/meta-quest/bubblewrap)
+
+> TODO: suggest cli flags

xurfer/conf.lua

@@ -1,14 +1,16 @@
 -- sync lovr/love positional cli arguments
 if arg[0] == nil and arg[1] ~= nil then arg[0] = arg[1] end
 
-runtime = ""
+package.path = package.path .. ';' .. 
+               '?.lua;' .. 
+               '?/init.lua;' ..  
+               'lib/?.lua;'
 
-if lovr ~= nil then runtime = "lovr" end 
-if love ~= nil then runtime = "love" end 
+local runtime = require("runtime/detect")
 
 package.path = package.path .. ';' .. 
-               arg[0] .. '/' .. runtime .. '/?.lua;' .. 
-               arg[0] .. '/' .. runtime .. '/?/init.lua;' .. 
+               arg[0] .. '/' .. runtime.path .. '/?.lua;' .. 
+               arg[0] .. '/' .. runtime.path .. '/?/init.lua;' .. 
                arg[0] .. '/lib/?.lua'
 
-require( runtime .. "/conf")
+require( runtime.path .. "/conf")

xurfer/ecs.lua

@@ -1,6 +1,6 @@
 local ecs = require("tiny-ecs")
 
-ecs.init = function()
+ecs.init = function(api)
   print("[i] loading ecs")
   baseEntify = ecs.processingSystem()
   baseEntify.filter = ecs.rejectAll('commit') 
@@ -24,6 +24,7 @@ ecs.init = function()
 end
 
 ecs.clear = function()
+  trace("[ecs] ecs.clear() scene")
   api.ext.exec("onClear")
   api.ecs.clearEntities( api.world )
   api.world.commit()

xurfer/ext/3DFile/main.lua

@@ -28,7 +28,7 @@ return {
         api.ecs.add( api.world, obj )
         obj.commit('on3DFile') -- notify systems
       else
-        print("[3DFile] error: could not load " .. obj.URL.string )
+        print("[3DFile] error: could not load " .. obj.URL.string .. ": " .. obj.URLResponse.data )
       end
     end
   end

xurfer/ext/http-lovr/main.lua

@@ -43,8 +43,8 @@ http = {
           req.headers = headers
           channel:pop()      -- remove last
           channel:push(req)  -- re-push but with status (which thread ignores)
-          lovr.timer.sleep(.1)
         end
+        lovr.timer.sleep(.1)
       end
     ]]
     http.channel = lovr.thread.getChannel('http')
@@ -57,7 +57,11 @@ http = {
       
       local msg
       local res, present = http.channel:peek()
-      if present and res.status ~= nil then
+      if present then
+        if res.status == nil and res.data == "Could not connect to server" then 
+          res.status = 503 -- service unavailable
+        end
+        if res.status ~= nil then
           msg = http.channel:pop()
           -- we got our urlrequest response
           if http.cache[ msg.url ] then 
@@ -67,6 +71,7 @@ http = {
             error("msg-object was not found in cache")
           end
         end
+      end
 
     end
   end,

xurfer/ext/kitchensink/main.lua

@@ -26,11 +26,11 @@ return {
 
     sample.load({
         gameSunsetImage = lovr.graphics.newTexture(
-            "lovr/sample/assets/game-sunset.png", {}
+            "runtime/lovr/sample/assets/game-sunset.png", {}
         ),
         nineSliceImage = {
             image = lovr.graphics.newTexture(
-                "lovr/sample/assets/ui-box-slice.png", { mipmaps = false }
+                "runtime/lovr/sample/assets/ui-box-slice.png", { mipmaps = false }
             ),
             l = 8,
             t = 8,
@@ -40,14 +40,14 @@ return {
         smileMSDFLayeredImage = {
             {
                 image = lovr.graphics.newTexture(
-                    "lovr/sample/assets/smile-bg.png",
+                    "runtime/lovr/sample/assets/smile-bg.png",
                     { linear = true, mipmaps = false }
                 ),
                 color = iui.newColor(0.944, 0.794, 0.468)
             },
             {
                 image = lovr.graphics.newTexture(
-                    "lovr/sample/assets/smile-fg.png",
+                    "runtime/lovr/sample/assets/smile-fg.png",
                     { linear = true, mipmaps = false }
                 ),
                 color = iui.newColor(0.157, 0.157, 0.157)
@@ -57,7 +57,7 @@ return {
             {
                 image = {
                     image = lovr.graphics.newTexture(
-                        "lovr/sample/assets/nine-slice-interior.png",
+                        "runtime/lovr/sample/assets/nine-slice-interior.png",
                         { linear = true, mipmaps = false }
                     ),
                     l = 16,
@@ -70,7 +70,7 @@ return {
             {
                 image = {
                     image = lovr.graphics.newTexture(
-                        "lovr/sample/assets/nine-slice-frame.png",
+                        "runtime/lovr/sample/assets/nine-slice-frame.png",
                         { linear = true, mipmaps = false }
                     ),
                     l = 16,

xurfer/ext/startupscene/main.lua

@@ -16,7 +16,7 @@ return {
 
   load = function()
     --if api.iui.idiom == "vr" then
-      envTex = api.graphics.newTexture("lovr/assets/img/env.png", {})
+      envTex = api.graphics.newTexture("runtime/lovr/assets/img/env.png", {})
       api.world.skybox = api.graphics.newTexture({
         px = 'ext/startupscene/skybox/Dayright.jpg',  -- 'px.png',
         nx = 'ext/startupscene/skybox/Dayleft.jpg',   -- 'nx.png',

xurfer/ext/unixy/main.lua

@@ -39,10 +39,16 @@ unixy = {
   init = function() 
   end,
 
-  proxyCLI = function( cmdfunc, callback )
+  proxyCLI = function( cmd, cmdfunc, callback )
+    if api.util.cmdExist(cmd) then
+      print("[i] attaching ".. cmd .. " cli-cmd to api") 
       return function(...)
         return unixy.addjob( cmdfunc, callback, ...)
       end
+    else
+      print("[!] could not attach ".. cmd .. " cli-cmd to api: not found") 
+      return function()end
+    end
   end,
 
   update = function(dt)
@@ -79,7 +85,6 @@ unixy = {
       callback = callback
     })
     trace("[unixy] start job with pid " .. pid .. " => 1> " .. stdout_file .. " 2> " .. stderr_file)
-    print_r(unixy.jobs)
   end,
 
   check_jobs = function()
@@ -98,7 +103,7 @@ unixy = {
         -- Clean up 
         os.remove(job.stdout_file)
         os.remove(job.stderr_file)
-        job.callback(stdout, stderr, retcode, unpack(job.args) )
+        job.callback(stdout, stderr, retcode, table.unpack(job.args) )
         table.remove(unixy.jobs, i)
       else
         io.write(".")

xurfer/ext/xrfragments/lovr-xrf.lua

@@ -113,6 +113,7 @@ end
 
 -- utility function to traverse recursive table
 xrf.traverse = function(arr, cb, key)
+  if arr == nil then return end
   if key == nil then key = 'children' end
   for k, child in pairs(arr) do 
     if type(child) == 'table' then 

xurfer/lib/xmlSimple.lua

@@ -1,5 +1,3 @@
-module(..., package.seeall)
-
 ---------------------------------------------------------------------------------
 ---------------------------------------------------------------------------------
 --

xurfer/main.lua

@@ -1,3 +1,4 @@
+#!/usr/bin/env lua
 -- -- GLB URLS
 -- ./lovr xurfer https://coderofsalvation.codeberg.page/xrfragment-haxe/example/assets/example.glb?bar=1&f=2#foo'
 -- ./lovr xurfer https://codeberg.org/coderofsalvation/xrfragment/raw/branch/main/assets/template/website/website.glb'
@@ -9,23 +10,18 @@
 -- ./lovr xurfer https://snips.sh/f/rHFLg-cewi?r=1' -- cube
 -- ./lovr xurfer https://snips.sh/f/_U5-XctEVE?r=1' -- cube, monkey, scene
 
-local runtime = nil
+print("\n    X U R F Ξ R")
+print("    ⠭ ⠥ ⠗ ⠋ ⠑ ⠗\n")
 
-if lovr ~= nil then 
-  runtime = { path = "lovr", api = lovr }
-elseif love ~= nil then 
-  runtime = { path = "love", api = love };  
-end 
-
-if runtime == nil then 
-  package.path = package.path .. ';' .. 'xurfer/?.lua' 
+package.path = package.path .. ';' .. '?.lua;'
 require('conf') 
-end
 
+local runtime = require("runtime/detect")
 local util    = require("util")
 local  ecs    = require("ecs")
 
 api = {
+  runtime  = runtime,
   parser   = {
     json   = require("json"),
     xml    = require("xmlSimple"),
@@ -46,7 +42,8 @@ require( runtime.path .. "/main")
   
 util.loaddir( "ext",   api, api.ext )
 util.loaddir( "media", api, api.media )
-ecs.init()
+
+ecs.init(api)
 api.ext.exec('init')
 
 -- load urls passed on the cli
@@ -55,3 +52,6 @@ foreach( arg, function(k,uri)
     api.ecs.add( api.world, { URI = { url = uri, method = 'GET', target = '_top' }  })
   end
 end)
+
+-- for runtimes (runtime/lua) which dont automatically run an update-loop (like love/lovr)
+api.ext.exec('main') 

xurfer/runtime/detect.lua

@@ -0,0 +1,17 @@
+local runtime = nil
+-- determine runtime
+if lovr ~= nil then 
+  runtime = { name = "lovr", path = "runtime/lovr", api = lovr }
+elseif love ~= nil then 
+  runtime = { name = "lua", path = "runtime/love", api = love }
+else
+  runtime = { name = "lua", path = "runtime/lua", api = require("runtime/lua/api") }
+end
+
+
+runtime.os = "unixy"
+if package.config:sub(1,1) == "\\" then
+  runtime.os = "windows"
+end
+
+return runtime

xurfer/runtime/lovr/main.lua

@@ -9,8 +9,8 @@ local iui = require "lib.iui"
 local backend = require "lib.lovr-iui"
 
 -- modify for nested lovr path for api
-iui.resourcePath = "lovr/" .. iui.resourcePath
-backend.resourcePath = "lovr/" .. backend.resourcePath
+iui.resourcePath = "runtime/lovr/" .. iui.resourcePath
+backend.resourcePath = "runtime/lovr/" .. backend.resourcePath
 api.iui = iui
 api.backend = backend
 -- decorate api