mirror of
https://expo.survex.com/repositories/troggle/.git
synced 2024-12-18 14:32:19 +00:00
523 lines
22 KiB
Python
523 lines
22 KiB
Python
import os
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import re
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from pathlib import Path
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from sys import getfilesystemencoding as sys_getfilesystemencoding
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from urllib.parse import unquote as urlunquote
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from urllib.parse import urljoin
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import django.forms as forms
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from django.http import HttpResponse, HttpResponseRedirect
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from django.shortcuts import redirect, render
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from django.urls import reverse
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from django.views.decorators.csrf import ensure_csrf_cookie
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import troggle.core.views.caves
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import troggle.settings as settings
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from troggle.core.models.caves import Cave
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from troggle.core.utils import WriteAndCommitError, current_expo, write_and_commit
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from troggle.core.views.editor_helpers import HTMLarea
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from troggle.core.views.uploads import edittxtpage
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from .auth import login_required_if_public
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"""Formerly a separate package called 'flatpages' written by Martin Green 2011.
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This was NOT django.contrib.flatpages which stores HTML in the database, so the name was changed to expopages.
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Then it was incorporated into troggle directly, rather than being an unnecessary external package.
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This is a succession of hacks and needs to be redisgned and refactored.
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"""
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default_head = """<head>
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<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
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<title>CUCC Expedition - index</title>
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<link rel="stylesheet" type="text/css" href="../css/main2.css" />
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<link rel="stylesheet" type="text/css" href="../../css/main2.css" />
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<link rel="stylesheet" type="text/css" href="../../../css/main2.css" />
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</head>
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<body>
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<h1>Expo</h1>
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<h2 id="tophead">CUCC Expedition</h2>
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<ul id="links">
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<li><a href="/index.htm">Home</a></li>
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<li><a href="/infodx.htm">Main Index</a></li>
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<li><a href="/handbook/index.htm">Handbook</a></li>
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<li><a href="/handbook/computing/onlinesystems.html">Online systems</a></li>
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<li><a href="/pubs.htm">Reports</a></li>
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<li><a href="/areas.htm">Areas</a></li>
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<li><a href="/caves">Caves</a></li>
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<li><a href="/expedition/2019">Troggle</a></li>
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<li><form name=P method=get action="/search" target="_top">
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<input id="omega-autofocus" type=search name=P size=8 autofocus>
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<input type=submit value="Search"></li>
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</ul>""" # this gets overwritten by templates/menu.html by django for most normal pages
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def expofiles_redirect(request, filepath):
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"""This is used only when running as a test system without a local copy of /expofiles/
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when settings.EXPOFILESREMOTE is True
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"""
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return redirect(urljoin("http://expo.survex.com/expofiles/", filepath))
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def spider(request, _):
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# urls ending in "_edit_edit"
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return render(request, "pagenotfound.html", {"path": path}, status=404)
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# return redirect("/?#") # so that suffixes applied by spider are no longer part of the url
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def map(request):
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"""Serves unadorned the expoweb/map/slippy/map.html file"""
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fn = Path(settings.EXPOWEB, "map", "slippy", "map.html")
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return HttpResponse(content=open(fn, "r"), content_type="text/html")
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def mapfile(request, path):
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"""Serves unadorned file: everything in the /map/... folder tree"""
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fn = Path(settings.EXPOWEB, "map", path)
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print(f"MAP cuttout. \n{path=}\n{fn=} mime:{getmimetype(fn)}")
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return HttpResponse(content=open(fn, "r"), content_type=getmimetype(fn))
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def expofilessingle(request, filepath):
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"""sends a single binary file to the user, if not found, show the parent directory
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If the path actually is a directory, then show that.
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"""
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# print(f' - expofilessingle {filepath}')
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if filepath == "" or filepath == "/":
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return expofilesdir(request, settings.EXPOFILES, "")
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fn = urlunquote(filepath)
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fn = Path(settings.EXPOFILES, filepath)
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if fn.is_dir():
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return expofilesdir(request, Path(fn), Path(filepath))
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if fn.is_file():
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return HttpResponse(content=open(fn, "rb"), content_type=getmimetype(filepath)) # any file
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else:
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# not a file, so show parent directory - DANGER need to check this is limited to below expofiles
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if Path(fn).parent == Path(settings.EXPOFILES).parent:
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return expofilesdir(request, Path(settings.EXPOFILES), Path(filepath).parent)
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else:
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return expofilesdir(request, Path(fn).parent, Path(filepath).parent)
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def expofilesdir(request, dirpath, filepath):
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"""does a directory display. If there is an index.html file we should display that.
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- dirpath is a full Path() resolved including local machine /expofiles/
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- filepath is a Path() and it does not have /expofiles/ in it
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"""
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# print(f' - expofilesdir {dirpath} settings.EXPOFILESREMOTE: {settings.EXPOFILESREMOTE}')
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if filepath:
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urlpath = "expofiles" / Path(filepath)
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else:
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urlpath = Path("expofiles")
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try:
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for f in dirpath.iterdir():
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pass
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except FileNotFoundError:
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# print(f' - expofilesdir error {dirpath}')
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return expofilesdir(request, dirpath.parent, filepath.parent)
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fileitems = []
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diritems = []
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for f in dirpath.iterdir():
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if f.is_dir():
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diritems.append((urlpath / f.parts[-1], str(f.parts[-1])))
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else:
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# if f.parts[-1].lower() == 'index.htm' or f.parts[-1].lower() == 'index.html': # css cwd problem
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# return HttpResponse(content=open(f, "rb"),content_type=getmimetype(filepath)) # any file
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# return expofilessingle(request, str(Path(filepath / f.parts[-1])))
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fileitems.append((Path(urlpath) / f.parts[-1], str(f.parts[-1]), getmimetype(f)))
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return render(
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request,
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"dirdisplay.html",
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{"filepath": urlpath, "fileitems": fileitems, "diritems": diritems, "settings": settings},
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)
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def pubspage(request):
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"""This is a single-page function, specifically to cope with the updated "current year"
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which is hard-coded into the HTML of the page.
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This is a placeholder, we need to do something like what is done in indexpage() below...
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"""
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expowebpath = Path(settings.EXPOWEB)
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print("--redirecting from pubspage()")
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return expowebpage(request, expowebpath, "pubs.htm")
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def indexpage(request):
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"""This is a single-page function, specifically to cope with the updated "current year"
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which is hard-coded into the HTML of the page.
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This edits the most recent year on the fly..
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This now works.
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"""
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print("--redirecting from indexpage()")
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subpath = Path(settings.EXPOWEB) / "index00.htm"
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with open(subpath, "r") as o:
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html = o.read()
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html = html.replace('2xxx', f"{current_expo()}")
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content_type = "text/html"
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return HttpResponse(html, content_type=content_type)
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def expowebpage(request, expowebpath, path):
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"""Adds menus and serves an HTML page"""
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if path == "" or path == "index.htm":
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return indexpage(request)
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if not os.path.isfile(expowebpath / path):
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# Should not get here if the path has suffix "_edit"
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print(f" - 404 error in expowebpage() {path}")
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return render(request, "pagenotfound.html", {"path": path}, status=404)
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# print(f' - {sys_getfilesystemencoding()=}')
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if sys_getfilesystemencoding() != "utf-8":
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return HttpResponse(
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default_head
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+ "<h3>UTF-8 Parsing Failure:<br>Default file encoding on this Troggle installation is not UTF-8:<br>failure detected in expowebpage in views.expo.py</h3> Please Please reconfigure Debian/Apache/Django to fix this, i.e. contact Wookey. </body"
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)
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# This next bit can be drastically simplified now that we know that the system encoding actually is utf-8
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try:
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with open(expowebpath / path, "r", encoding="utf-8") as o:
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html = o.read()
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except:
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# exception raised on debian with python 3.9.2 but not on WSL Ubuntu with python 3.9.5
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# because debian was assuming default text encoding was 'ascii'. Now specified explicitly so should be OK
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try:
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with open(expowebpath / path, "rb") as o:
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html = str(o.read()).replace("<h1>", "<h1>BAD NON-UTF-8 characters here - ")
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html = html.replace("\\n", "\n")
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html = html.replace("\\r", "")
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html = html.replace("\\t", "\t")
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html = html.replace("\\'", "'")
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except:
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return HttpResponse(
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default_head
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+ "<h3>UTF-8 Parsing Failure:<br>Page could not be parsed using UTF-8:<br>failure detected in expowebpage in views.expo.py</h3> Please edit this <var>:expoweb:</var> page to replace dubious umlauts and £ symbols with correct HTML entities e.g. <em>&pound;;</em>. </body"
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)
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m = re.search(
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r"(.*)<\s*head([^>]*)>(.*)<\s*/head\s*>(.*)<\s*body([^>]*)>(.*)<\s*/body\s*>(.*)",
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html,
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re.DOTALL + re.IGNORECASE,
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)
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if m:
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preheader, headerattrs, head, postheader, bodyattrs, body, postbody = m.groups()
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else:
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return HttpResponse(
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default_head
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+ html
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+ "<h3>HTML Parsing failure:<br>Page could not be parsed into header and body:<br>failure detected in expowebpage in views.expo.py</h3> Please edit this <var>:expoweb:</var> page to be in the expected full HTML format </body"
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)
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m = re.search(r"<title>(.*)</title>", head, re.DOTALL + re.IGNORECASE)
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if m:
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(title,) = m.groups()
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else:
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title = ""
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m = re.search(r"noedit", head, re.DOTALL + re.IGNORECASE)
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if m:
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editable = False
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# print(f"NOEDIT set")
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else:
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editable = os.access(expowebpath / path, os.W_OK) # are file permissions writeable?
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# print(f"EDITABLE ? {editable}\n{head}")
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has_menu = False
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menumatch = re.match(r'(.*)<ul id="links">', body, re.DOTALL + re.IGNORECASE)
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if menumatch:
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has_menu = False
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# Determine which caves this page relates to
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m = re.search(r"(162\d\/[^\/]+)[\/\.]", path, re.DOTALL + re.IGNORECASE)
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if m:
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(path_start,) = m.groups()
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parent_caves = Cave.objects.filter(url__startswith=path_start)
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else:
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parent_caves = None
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# Determine if this page relates to a particular year
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m = re.search(r"years\/(\d\d\d\d)\/.*", path, re.DOTALL + re.IGNORECASE)
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if m:
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(year,) = m.groups()
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else:
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year = None
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# Determine if this page is part of the handbook
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handbook = path.startswith("handbook")
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return render(
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request,
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"expopage.html",
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{
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"editable": editable,
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"path": path,
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"title": title,
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"body": body,
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"homepage": (path == "index.htm"),
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"has_menu": has_menu,
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"year": year,
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"handbook": handbook,
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"parent_caves": parent_caves,
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},
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)
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def mediapage(request, subpath=None, doc_root=None):
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"""This is for special prefix paths /photos/ /site_media/, /static/ etc.
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as defined in urls.py . If given a directory, gives a failure page.
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"""
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#print("mediapath", subpath)
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if doc_root is not None:
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filetobeopened = Path(doc_root, subpath)
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if filetobeopened.is_dir():
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return render(request, "nodirlist.html", {"path": subpath})
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try:
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return HttpResponse(content=open(filetobeopened, "rb"), content_type=getmimetype(subpath))
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except IOError:
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return render(request, "pagenotfound.html", {"path": subpath}, status=404)
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else:
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return render(request, "pagenotfound.html", {"path": subpath}, status=404)
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def expopage(request, path):
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"""Either renders an HTML page from expoweb with all the menus,
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or serves an unadorned binary file with mime type
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"""
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# print(" - EXPOPAGES delivering the file: '{}':{} as MIME type: {}".format(request.path, path,getmimetype(path)),flush=True)
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if path.startswith("noinfo") and settings.PUBLIC_SITE and not request.user.is_authenticated:
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return HttpResponseRedirect(urljoin(reverse("expologin"), f"?next={request.path}"))
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if path.startswith("admin/"):
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# don't even attempt to handle these sorts of mistakes
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return HttpResponseRedirect("/admin/")
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expowebpath = Path(settings.EXPOWEB)
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if path == "":
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return expowebpage(request, expowebpath, "index.htm")
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if path.endswith(".htm") or path.endswith(".html"):
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return expowebpage(request, expowebpath, path)
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if Path(expowebpath / path).is_dir():
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for p in ["index.html", "index.htm"]:
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if (expowebpath / path / p).is_file():
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# This needs to reset the path to the new subdirectory
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return HttpResponseRedirect("/" + str(Path(path) / p))
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return render(request, "pagenotfound.html", {"path": Path(path) / "index.html"}, status=404)
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if path.endswith("/"):
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# we already know it is not a directory.
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# the final / may have been appended by middleware if there was no page without it
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# do not redirect to a file path without the slash as we may get in a loop. Let the user fix it:
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return render(request, "dirnotfound.html", {"path": path, "subpath": path[0:-1]})
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# So it must be a file in /expoweb/ but not .htm or .html probably an image, maybe a txt file
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filetobeopened = expowebpath / path
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# print(f' - {sys_getfilesystemencoding()=}')
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if sys_getfilesystemencoding() != "utf-8":
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return HttpResponse(
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default_head
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+ "<h3>UTF-8 Parsing Failure:<br>Default file encoding on this Troggle installation is not UTF-8:<br>failure detected in expowebpage in views.expo.py</h3> Please Please reconfigure Debian/Apache/Django to fix this, i.e. contact Wookey. </body"
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)
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try:
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content = open(filetobeopened, "rb")
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content_type = getmimetype(path)
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return HttpResponse(content=content, content_type=content_type)
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except IOError:
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return render(request, "pagenotfound.html", {"path": path}, status=404)
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def getmimetype(path):
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"""Our own version rather than relying on what is provided by the python library. Note that when
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Apache or nginx is used to deliver /expofiles/ it will use it's own idea of mimetypes and
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not these.
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This sets the Content Type in the HTTP header, e.g.
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Content-Type: text/html; charset=utf-8
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"""
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path = str(path)
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if path.lower().endswith("gpx"):
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return "application/octet-stream"
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if path.lower().endswith("kml"):
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return "application/octet-stream"
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if path.lower().endswith(".css"):
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return "text/css"
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if path.lower().endswith(".txt"):
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return "text/css"
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if path.lower().endswith(".js"):
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return "application/javascript"
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if path.lower().endswith(".json"):
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return "application/javascript"
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if path.lower().endswith(".ico"):
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return "image/vnd.microsoft.icon"
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if path.lower().endswith(".png"):
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return "image/png"
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if path.lower().endswith(".tif"):
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return "image/tif"
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if path.lower().endswith(".gif"):
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return "image/gif"
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if path.lower().endswith(".jpeg"):
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return "image/jpeg"
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if path.lower().endswith(".jpg"):
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return "image/jpeg"
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if path.lower().endswith("svg"):
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return "image/svg+xml"
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if path.lower().endswith("xml"):
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return "application/xml" # we use "text/xml" for tunnel files
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if path.lower().endswith(".pdf"):
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return "application/pdf"
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if path.lower().endswith(".ps"):
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return "application/postscript"
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if path.lower().endswith(".svx"):
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return "application/x-survex-svx"
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if path.lower().endswith(".3d"):
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return "application/x-survex-3d"
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if path.lower().endswith(".pos"):
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return "application/x-survex-pos"
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if path.lower().endswith(".err"):
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return "application/x-survex-err"
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if path.lower().endswith(".odt"):
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return "application/vnd.oasis.opendocument.text"
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if path.lower().endswith(".ods"):
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return "application/vnd.oasis.opendocument.spreadsheet"
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if path.lower().endswith(".docx"):
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return "application/vnd.openxmlformats-officedocument.wordprocessingml.document"
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if path.lower().endswith(".xslx"):
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return "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"
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if path.lower().endswith(".gz"):
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return "application/x-7z-compressed"
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if path.lower().endswith(".7z"):
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return "application/x-7z-compressed"
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if path.lower().endswith(".zip"):
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return "application/zip"
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return ""
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@login_required_if_public
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@ensure_csrf_cookie
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def editexpopage(request, path):
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"""Manages the 'Edit this Page' capability for expo handbook and other html pages.
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Relies on HTML5 or javascript to provide the in-browser editing environment.
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"""
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try:
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# if a cave not a webpage at all.
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r = Cave.objects.get(url=path)
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return troggle.core.views.caves.editCave(request, r.cave.slug)
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except Cave.DoesNotExist:
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pass
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print(f" - {sys_getfilesystemencoding()=}")
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if sys_getfilesystemencoding() != "utf-8":
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return HttpResponse(
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default_head
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+ "<h3>UTF-8 Parsing Failure:<br>Default file encoding on this Troggle installation is not UTF-8:<br>failure detected in expowebpage in views.expo.py</h3> Please Please reconfigure Debian/Apache/Django to fix this, i.e. contact Wookey. </body"
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)
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# detect if this is a text file for editing
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filepath = Path(settings.EXPOWEB) / path
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if filepath.suffix in [".txt", ".sty", ".tex"] or filepath.name == "Makefile":
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print("Editing TEXT file", filepath)
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return edittxtpage(request, path, filepath)
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try:
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filepath = Path(settings.EXPOWEB) / path
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o = open(filepath, "r", encoding="utf8")
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html = o.read()
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autogeneratedmatch = re.search(
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r"\<\!--\s*(.*?(Do not edit|It is auto-generated|NOEDIT).*?)\s*--\>", html, re.DOTALL + re.IGNORECASE
|
|
)
|
|
if autogeneratedmatch:
|
|
message = "\tThis page is either auto-generated, and so cannot be edited,\n\t\tor it is too complex to allow users to edit it safely. \n\n\t\tA safer means of updating this page is on the programmers' to-do list."
|
|
return render(request, "errors/notice.html", {"message": message})
|
|
m = re.search(r"(.*)<head([^>]*)>(.*)</head>(.*)<body([^>]*)>(.*)</body>(.*)", html, re.DOTALL + re.IGNORECASE)
|
|
if m:
|
|
filefound = True
|
|
preheader, headerargs, head, postheader, bodyargs, body, postbody = m.groups()
|
|
# linksmatch = re.match(r'(.*)(<ul\s+id="links">.*)', body, re.DOTALL + re.IGNORECASE)
|
|
# if linksmatch:
|
|
# body, links = linksmatch.groups()
|
|
|
|
else:
|
|
return HttpResponse(
|
|
default_head
|
|
+ html
|
|
+ "<h3>HTML Parsing failure:<br>Page could not be parsed into header and body:<br>failure detected in expowebpage in views.expo.py</h3> Please edit this <var>:expoweb:</var> page to be in the expected full HTML format .</body>"
|
|
)
|
|
except IOError:
|
|
print("### File not found ### ", filepath)
|
|
filefound = False
|
|
|
|
if request.method == "POST": # If the form has been submitted...
|
|
pageform = ExpoPageForm(request.POST) # A form bound to the POST data
|
|
if pageform.is_valid(): # Form valid therefore write file
|
|
# print("### \n", str(pageform)[0:300])
|
|
# print("### \n csrfmiddlewaretoken: ",request.POST['csrfmiddlewaretoken'])
|
|
if filefound:
|
|
headmatch = re.match(r"(.*)<title>.*</title>(.*)", head, re.DOTALL + re.IGNORECASE)
|
|
if headmatch:
|
|
head = (
|
|
headmatch.group(1)
|
|
+ "<title>"
|
|
+ pageform.cleaned_data["title"]
|
|
+ "</title>"
|
|
+ headmatch.group(2)
|
|
)
|
|
else:
|
|
head = "<title>" + pageform.cleaned_data["title"] + "</title>"
|
|
else:
|
|
head = "<title>" + pageform.cleaned_data["title"] + "</title>"
|
|
preheader = "<html>"
|
|
headerargs = ""
|
|
postheader = ""
|
|
bodyargs = ""
|
|
postbody = "</html>\n"
|
|
body = pageform.cleaned_data["html"]
|
|
body = body.replace("\r", "")
|
|
result = f"{preheader}<head{headerargs}>{head}</head>{postheader}<body{bodyargs}>\n{body}</body>{postbody}"
|
|
|
|
if not filefound or result != html: # Check if content changed at all
|
|
try:
|
|
change_message = pageform.cleaned_data["change_message"]
|
|
write_and_commit([(filepath, result, "utf-8")], f"{change_message} - online edit of {path}")
|
|
except WriteAndCommitError as e:
|
|
return render(request, "errors/generic.html", {"message": e.message})
|
|
|
|
return HttpResponseRedirect(reverse("expopage", args=[path])) # Redirect after POST
|
|
else:
|
|
if filefound:
|
|
m = re.search(r"<title>(.*)</title>", head, re.DOTALL + re.IGNORECASE)
|
|
if m:
|
|
(title,) = m.groups()
|
|
else:
|
|
title = ""
|
|
pageform = ExpoPageForm(initial={"html": body, "title": title})
|
|
else:
|
|
pageform = ExpoPageForm()
|
|
return render(
|
|
request,
|
|
"editexpopage.html",
|
|
{
|
|
"path": path,
|
|
"form": pageform,
|
|
},
|
|
)
|
|
|
|
|
|
class ExpoPageForm(forms.Form):
|
|
"""The form used by the editexpopage function"""
|
|
|
|
title = forms.CharField(
|
|
widget=forms.TextInput(attrs={"size": "60", "placeholder": "Enter title (displayed in tab)"})
|
|
)
|
|
html = forms.CharField(
|
|
widget=HTMLarea(
|
|
attrs={"height": "80%", "rows": 20, "placeholder": "Enter page content (using HTML)"}, preview=True
|
|
),
|
|
required=False,
|
|
)
|
|
change_message = forms.CharField(
|
|
widget=forms.Textarea(
|
|
attrs={"cols": 80, "rows": 3, "placeholder": "Describe the change made (for version control records)"}
|
|
)
|
|
)
|