403 lines
14 KiB
Python
403 lines
14 KiB
Python
import time, re, os, mimetypes, json, cgi
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from Config import config
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from Site import SiteManager
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from User import UserManager
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from Plugin import PluginManager
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from Ui.UiWebsocket import UiWebsocket
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status_texts = {
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200: "200 OK",
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400: "400 Bad Request",
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403: "403 Forbidden",
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404: "404 Not Found",
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500: "500 Internal Server Error",
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}
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@PluginManager.acceptPlugins
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class UiRequest(object):
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def __init__(self, server, get, env, start_response):
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if server:
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self.server = server
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self.log = server.log
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self.get = get # Get parameters
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self.env = env # Enviroment settings
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self.start_response = start_response # Start response function
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self.user = None
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# Call the request handler function base on path
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def route(self, path):
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if config.ui_restrict and self.env['REMOTE_ADDR'] not in config.ui_restrict: # Restict Ui access by ip
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return self.error403()
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path = re.sub("^http://zero[/]+", "/", path) # Remove begining http://zero/ for chrome extension
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path = re.sub("^http://", "/", path) # Remove begining http for chrome extension .bit access
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if path == "/":
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return self.actionIndex()
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elif path.endswith("favicon.ico"):
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return self.actionFile("src/Ui/media/img/favicon.ico")
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# Media
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elif path.startswith("/uimedia/"):
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return self.actionUiMedia(path)
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elif path.startswith("/media"):
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return self.actionSiteMedia(path)
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# Websocket
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elif path == "/Websocket":
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return self.actionWebsocket()
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# Debug
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elif path == "/Debug" and config.debug:
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return self.actionDebug()
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elif path == "/Console" and config.debug:
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return self.actionConsole()
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# Site media wrapper
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else:
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body = self.actionWrapper(path)
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if body:
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return body
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else:
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func = getattr(self, "action"+path.lstrip("/"), None) # Check if we have action+request_path function
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if func:
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return func()
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else:
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return self.error404(path)
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# The request is proxied by chrome extension
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def isProxyRequest(self):
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return self.env["PATH_INFO"].startswith("http://")
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def isAjaxRequest(self):
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return self.env.get("HTTP_X_REQUESTED_WITH") == "XMLHttpRequest"
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# Get mime by filename
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def getContentType(self, file_name):
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content_type = mimetypes.guess_type(file_name)[0]
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if not content_type:
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if file_name.endswith("json"): # Correct json header
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content_type = "application/json"
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else:
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content_type = "application/octet-stream"
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return content_type
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# Returns: <dict> Cookies based on self.env
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def getCookies(self):
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raw_cookies = self.env.get('HTTP_COOKIE')
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if raw_cookies:
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cookies = cgi.parse_qsl(raw_cookies)
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return {key.strip(): val for key, val in cookies}
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else:
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return {}
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def getCurrentUser(self):
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if self.user: return self.user # Cache
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self.user = UserManager.user_manager.get() # Get user
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if not self.user:
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self.user = UserManager.user_manager.create()
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return self.user
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# Send response headers
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def sendHeader(self, status=200, content_type="text/html", extra_headers=[]):
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if content_type == "text/html": content_type = "text/html; charset=utf-8"
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headers = []
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headers.append(("Version", "HTTP/1.1"))
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headers.append(("Access-Control-Allow-Origin", "*")) # Allow json access
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if self.env["REQUEST_METHOD"] == "OPTIONS":
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headers.append(("Access-Control-Allow-Headers", "Origin, X-Requested-With, Content-Type, Accept")) # Allow json access
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if (self.env["REQUEST_METHOD"] == "OPTIONS" or not self.isAjaxRequest()) and status == 200 and (content_type == "text/css" or content_type.startswith("application") or self.env["REQUEST_METHOD"] == "OPTIONS" or content_type.startswith("image")): # Cache Css, Js, Image files for 10min
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headers.append(("Cache-Control", "public, max-age=600")) # Cache 10 min
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else: # Images, Css, Js
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headers.append(("Cache-Control", "no-cache, no-store, private, must-revalidate, max-age=0")) # No caching at all
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#headers.append(("Cache-Control", "public, max-age=604800")) # Cache 1 week
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headers.append(("Content-Type", content_type))
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for extra_header in extra_headers:
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headers.append(extra_header)
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return self.start_response(status_texts[status], headers)
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# Renders a template
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def render(self, template_path, *args, **kwargs):
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#template = SimpleTemplate(open(template_path), lookup=[os.path.dirname(template_path)])
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#yield str(template.render(*args, **kwargs).encode("utf8"))
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template = open(template_path).read().decode("utf8")
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return template.format(**kwargs).encode("utf8")
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# - Actions -
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# Redirect to an url
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def actionRedirect(self, url):
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self.start_response('301 Redirect', [('Location', url)])
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yield "Location changed: %s" % url
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def actionIndex(self):
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return self.actionRedirect("/"+config.homepage)
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# Render a file from media with iframe site wrapper
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def actionWrapper(self, path, extra_headers=None):
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if not extra_headers: extra_headers = []
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if self.get.get("wrapper") == "False": return self.actionSiteMedia("/media"+path) # Only serve html files with frame
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match = re.match("/(?P<address>[A-Za-z0-9\._-]+)(?P<inner_path>/.*|$)", path)
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if match:
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address = match.group("address")
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inner_path = match.group("inner_path").lstrip("/")
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if "." in inner_path and not inner_path.endswith(".html"): return self.actionSiteMedia("/media"+path) # Only serve html files with frame
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if self.env.get("HTTP_X_REQUESTED_WITH"): return self.error403("Ajax request not allowed to load wrapper") # No ajax allowed on wrapper
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file_inner_path = inner_path
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if not file_inner_path: file_inner_path = "index.html" # If inner path defaults to index.html
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if not inner_path and not path.endswith("/"): inner_path = address+"/" # Fix relative resources loading if missing / end of site address
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inner_path = re.sub(".*/(.+)", "\\1", inner_path) # Load innerframe relative to current url
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site = SiteManager.site_manager.get(address)
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if site and site.content_manager.contents.get("content.json") and (not site.getReachableBadFiles() or site.settings["own"]): # Its downloaded or own
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title = site.content_manager.contents["content.json"]["title"]
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else:
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title = "Loading %s..." % address
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site = SiteManager.site_manager.need(address) # Start download site
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if not site: return False
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#extra_headers.append(("X-Frame-Options", "DENY"))
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self.sendHeader(extra_headers=extra_headers[:])
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# Wrapper variable inits
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query_string = ""
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body_style = ""
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meta_tags = ""
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if self.env.get("QUERY_STRING"): query_string = "?"+self.env["QUERY_STRING"]+"&wrapper=False"
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else: query_string = "?wrapper=False"
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if self.isProxyRequest(): # Its a remote proxy request
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server_url = "http://%s:%s" % (self.env["SERVER_NAME"], self.env["SERVER_PORT"])
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homepage = "http://zero/"+config.homepage
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else: # Use relative path
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server_url = ""
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homepage = "/"+config.homepage
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if site.content_manager.contents.get("content.json") : # Got content.json
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content = site.content_manager.contents["content.json"]
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if content.get("background-color"):
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body_style += "background-color: "+cgi.escape(site.content_manager.contents["content.json"]["background-color"], True)+";"
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if content.get("viewport"):
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meta_tags += '<meta name="viewport" id="viewport" content="%s">' % cgi.escape(content["viewport"], True)
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return self.render("src/Ui/template/wrapper.html",
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server_url=server_url,
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inner_path=inner_path,
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file_inner_path=file_inner_path,
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address=address,
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title=title,
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body_style=body_style,
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meta_tags=meta_tags,
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query_string=query_string,
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wrapper_key=site.settings["wrapper_key"],
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permissions=json.dumps(site.settings["permissions"]),
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show_loadingscreen=json.dumps(not site.storage.isFile(file_inner_path)),
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rev=config.rev,
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homepage=homepage
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)
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else: # Bad url
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return False
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# Returns if media request allowed from that referer
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def isMediaRequestAllowed(self, site_address, referer):
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referer_path = re.sub("http[s]{0,1}://.*?/", "/", referer).replace("/media", "") # Remove site address
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return referer_path.startswith("/"+site_address)
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# Serve a media for site
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def actionSiteMedia(self, path):
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path = path.replace("/index.html/", "/") # Base Backward compatibility fix
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if path.endswith("/"): path = path+"index.html"
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match = re.match("/media/(?P<address>[A-Za-z0-9\._-]+)/(?P<inner_path>.*)", path)
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referer = self.env.get("HTTP_REFERER")
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if referer and match: # Only allow same site to receive media
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if not self.isMediaRequestAllowed(match.group("address"), referer):
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return self.error403("Media referrer error") # Referrer not starts same address as requested path
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if match: # Looks like a valid path
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address = match.group("address")
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file_path = "%s/%s/%s" % (config.data_dir, address, match.group("inner_path"))
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allowed_dir = os.path.abspath("%s/%s" % (config.data_dir, address)) # Only files within data/sitehash allowed
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data_dir = os.path.abspath("data") # No files from data/ allowed
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if ".." in file_path or not os.path.dirname(os.path.abspath(file_path)).startswith(allowed_dir) or allowed_dir == data_dir: # File not in allowed path
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return self.error403()
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else:
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if config.debug and file_path.split("/")[-1].startswith("all."): # When debugging merge *.css to all.css and *.js to all.js
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site = self.server.sites.get(address)
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if site.settings["own"]:
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from Debug import DebugMedia
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DebugMedia.merge(file_path)
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if os.path.isfile(file_path): # File exits
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#self.sendHeader(content_type=self.getContentType(file_path)) # ?? Get Exception without this
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return self.actionFile(file_path)
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else: # File not exits, try to download
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site = SiteManager.site_manager.need(address, all_file=False)
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result = site.needFile(match.group("inner_path"), priority=1) # Wait until file downloads
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if result:
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#self.sendHeader(content_type=self.getContentType(file_path))
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return self.actionFile(file_path)
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else:
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self.log.debug("File not found: %s" % match.group("inner_path"))
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return self.error404(match.group("inner_path"))
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else: # Bad url
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return self.error404(path)
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# Serve a media for ui
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def actionUiMedia(self, path):
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match = re.match("/uimedia/(?P<inner_path>.*)", path)
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if match: # Looks like a valid path
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file_path = "src/Ui/media/%s" % match.group("inner_path")
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allowed_dir = os.path.abspath("src/Ui/media") # Only files within data/sitehash allowed
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if ".." in file_path or not os.path.dirname(os.path.abspath(file_path)).startswith(allowed_dir): # File not in allowed path
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return self.error403()
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else:
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if config.debug and match.group("inner_path").startswith("all."): # When debugging merge *.css to all.css and *.js to all.js
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from Debug import DebugMedia
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DebugMedia.merge(file_path)
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return self.actionFile(file_path)
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else: # Bad url
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return self.error400()
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# Stream a file to client
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def actionFile(self, file_path, block_size = 64*1024):
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if os.path.isfile(file_path):
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# Try to figure out content type by extension
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content_type = self.getContentType(file_path)
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self.sendHeader(content_type = content_type) # TODO: Dont allow external access: extra_headers=[("Content-Security-Policy", "default-src 'unsafe-inline' data: http://localhost:43110 ws://localhost:43110")]
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if self.env["REQUEST_METHOD"] != "OPTIONS":
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file = open(file_path, "rb")
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while 1:
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try:
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block = file.read(block_size)
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if block:
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yield block
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else:
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raise StopIteration
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except StopIteration:
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file.close()
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break
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else: # File not exits
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yield self.error404(file_path)
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# On websocket connection
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def actionWebsocket(self):
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ws = self.env.get("wsgi.websocket")
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if ws:
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wrapper_key = self.get["wrapper_key"]
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# Find site by wrapper_key
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site = None
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for site_check in self.server.sites.values():
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if site_check.settings["wrapper_key"] == wrapper_key: site = site_check
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if site: # Correct wrapper key
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user = self.getCurrentUser()
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if not user:
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self.log.error("No user found")
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return self.error403()
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ui_websocket = UiWebsocket(ws, site, self.server, user)
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site.websockets.append(ui_websocket) # Add to site websockets to allow notify on events
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ui_websocket.start()
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for site_check in self.server.sites.values(): # Remove websocket from every site (admin sites allowed to join other sites event channels)
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if ui_websocket in site_check.websockets:
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site_check.websockets.remove(ui_websocket)
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return "Bye."
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else: # No site found by wrapper key
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self.log.error("Wrapper key not found: %s" % wrapper_key)
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return self.error403()
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else:
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start_response("400 Bad Request", [])
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return "Not a websocket!"
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# Debug last error
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def actionDebug(self):
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# Raise last error from DebugHook
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import sys
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last_error = sys.modules["main"].DebugHook.last_error
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if last_error:
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raise last_error[0], last_error[1], last_error[2]
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else:
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self.sendHeader()
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return "No error! :)"
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# Just raise an error to get console
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def actionConsole(self):
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import sys
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sites = self.server.sites
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main = sys.modules["main"]
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raise Exception("Here is your console")
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# - Tests -
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def actionTestStream(self):
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self.sendHeader()
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yield " "*1080 # Overflow browser's buffer
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yield "He"
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time.sleep(1)
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yield "llo!"
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yield "Running websockets: %s" % len(self.server.websockets)
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self.server.sendMessage("Hello!")
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# - Errors -
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# Send bad request error
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def error400(self):
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self.sendHeader(400)
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return "Bad Request"
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# You are not allowed to access this
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def error403(self, message="Forbidden"):
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self.sendHeader(403)
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return message
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# Send file not found error
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def error404(self, path = None):
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self.sendHeader(404)
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return "Not Found: %s" % path.encode("utf8")
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# Internal server error
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def error500(self, message = ":("):
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self.sendHeader(500)
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return "<h1>Server error</h1>%s" % cgi.escape(message)
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# - Reload for eaiser developing -
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#def reload():
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#import imp, sys
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#global UiWebsocket
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#UiWebsocket = imp.load_source("UiWebsocket", "src/Ui/UiWebsocket.py").UiWebsocket
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#reload(sys.modules["User.UserManager"])
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#UserManager.reloadModule()
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#self.user = UserManager.user_manager.getCurrent()
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