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maloja/server.py

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#!/usr/bin/env python
# server stuff
from bottle import Bottle, route, get, post, error, run, template, static_file, request, response, FormsDict, redirect, template, HTTPResponse
import waitress
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# monkey patching
import monkey
# rest of the project
import database
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from utilities import resolveImage
from urihandler import uri_to_internal, remove_identical
# doreah toolkit
from doreah import settings
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from doreah.logging import log
# technical
from importlib.machinery import SourceFileLoader
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import _thread
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import sys
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import signal
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import os
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import setproctitle
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#settings.config(files=["settings/default.ini","settings/settings.ini"])
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#settings.update("settings/default.ini","settings/settings.ini")
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MAIN_PORT = settings.get_settings("WEB_PORT")
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webserver = Bottle()
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@webserver.route("")
@webserver.route("/")
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def mainpage():
response = static_html("start")
return response
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@webserver.error(400)
@webserver.error(403)
@webserver.error(404)
@webserver.error(405)
@webserver.error(408)
@webserver.error(500)
@webserver.error(505)
def customerror(error):
code = int(str(error).split(",")[0][1:])
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log("HTTP Error: " + str(code),module="error")
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if os.path.exists("website/errors/" + str(code) + ".html"):
return static_file("website/errors/" + str(code) + ".html",root="")
else:
with open("website/errors/generic.html") as htmlfile:
html = htmlfile.read()
# apply global substitutions
with open("website/common/footer.html") as footerfile:
footerhtml = footerfile.read()
with open("website/common/header.html") as headerfile:
headerhtml = headerfile.read()
html = html.replace("</body>",footerhtml + "</body>").replace("</head>",headerhtml + "</head>")
html = html.replace("ERROR_CODE",str(code))
return html
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def graceful_exit(sig=None,frame=None):
#urllib.request.urlopen("http://[::1]:" + str(DATABASE_PORT) + "/sync")
database.sync()
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log("Server shutting down...")
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os._exit(42)
@webserver.route("/image")
def dynamic_image():
keys = FormsDict.decode(request.query)
relevant, _, _, _ = uri_to_internal(keys)
result = resolveImage(**relevant)
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if result == "": return ""
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redirect(result,307)
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@webserver.route("/images/<pth:re:.*\\.jpeg>")
@webserver.route("/images/<pth:re:.*\\.jpg>")
@webserver.route("/images/<pth:re:.*\\.png>")
@webserver.route("/images/<pth:re:.*\\.gif>")
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def static_image(pth):
small_pth = pth + "-small"
if os.path.exists("images/" + small_pth):
response = static_file("images/" + small_pth,root="")
else:
try:
from wand.image import Image
img = Image(filename="images/" + pth)
x,y = img.size[0], img.size[1]
smaller = min(x,y)
if smaller > 300:
ratio = 300/smaller
img.resize(int(ratio*x),int(ratio*y))
img.save(filename="images/" + small_pth)
response = static_file("images/" + small_pth,root="")
else:
response = static_file("images/" + pth,root="")
except:
response = static_file("images/" + pth,root="")
#response = static_file("images/" + pth,root="")
response.set_header("Cache-Control", "public, max-age=86400")
return response
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#@webserver.route("/<name:re:.*\\.html>")
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@webserver.route("/<name:re:.*\\.js>")
@webserver.route("/<name:re:.*\\.css>")
@webserver.route("/<name:re:.*\\.png>")
@webserver.route("/<name:re:.*\\.jpeg>")
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@webserver.route("/<name:re:.*\\.ico>")
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@webserver.route("/<name:re:.*\\.txt>")
def static(name):
response = static_file("website/" + name,root="")
response.set_header("Cache-Control", "public, max-age=3600")
return response
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@webserver.route("/<name>")
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def static_html(name):
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linkheaders = ["</css/maloja.css>; rel=preload; as=style"]
keys = remove_identical(FormsDict.decode(request.query))
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with open("website/" + name + ".html") as htmlfile:
html = htmlfile.read()
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# apply global substitutions
with open("website/common/footer.html") as footerfile:
footerhtml = footerfile.read()
with open("website/common/header.html") as headerfile:
headerhtml = headerfile.read()
html = html.replace("</body>",footerhtml + "</body>").replace("</head>",headerhtml + "</head>")
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# If a python file exists, it provides the replacement dict for the html file
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if os.path.exists("website/" + name + ".py"):
#txt_keys = SourceFileLoader(name,"website/" + name + ".py").load_module().replacedict(keys,DATABASE_PORT)
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try:
content = SourceFileLoader(name,"website/" + name + ".py").load_module().instructions(keys)
if isinstance(content,str): redirect(content)
txt_keys, resources = content
except HTTPResponse as e:
raise
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except Exception as e:
log("Error in website generation: " + str(sys.exc_info()),module="error")
raise
# add headers for server push
for resource in resources:
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if all(ord(c) < 128 for c in resource["file"]):
# we can only put ascii stuff in the http header
linkheaders.append("<" + resource["file"] + ">; rel=preload; as=" + resource["type"])
# apply key substitutions
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for k in txt_keys:
if isinstance(txt_keys[k],list):
# if list, we replace each occurence with the next item
for element in txt_keys[k]:
html = html.replace(k,element,1)
else:
html = html.replace(k,txt_keys[k])
response.set_header("Link",",".join(linkheaders))
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return html
#return static_file("website/" + name + ".html",root="")
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# Shortlinks
@webserver.get("/artist/<artist>")
def redirect_artist(artist):
redirect("/artist?artist=" + artist)
@webserver.get("/track/<artists:path>/<title>")
def redirect_track(artists,title):
redirect("/track?title=" + title + "&" + "&".join("artist=" + artist for artist in artists.split("/")))
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#set graceful shutdown
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signal.signal(signal.SIGINT, graceful_exit)
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signal.signal(signal.SIGTERM, graceful_exit)
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#rename process, this is now required for the daemon manager to work
setproctitle.setproctitle("Maloja")
## start database
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database.start_db()
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database.dbserver.mount(server=webserver)
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log("Starting up Maloja server...")
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run(webserver, host='::', port=MAIN_PORT, server='waitress')