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sitexml.py
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693 lines (607 loc) · 24.1 KB
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# -*- coding: utf-8 -*-
"""
SiteXML parser
MIT License
Copyright (c) 2017 Roman Mindlin
Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.
"""
import os
import hashlib
from urllib.parse import parse_qsl, unquote_plus
import lxml.etree as ET
from beaker.middleware import SessionMiddleware
import static
REAL_PATH = '/var/www/html/'
DEBUG = True
SITEXML = '.site.xml'
USERS_FILE = '../.users'
CONTENT_DIR = '.content/'
THEMES_DIR = '.themes/'
MODULES_DIR = '.modules/'
AJAX_BROWSING_SCRIPT = '<script src="/js/siteXML.ajaxBrowsing.js"></script>'
CONTENT_EDIT_SCRIPT = '''
<link rel="stylesheet" href="http://yui.yahooapis.com/3.18.1/build/cssreset-context/cssreset-context-min.css" type="text/css" />
<link rel="stylesheet" href="/css/siteXML.editContent.css" type="text/css" />
<link rel="stylesheet" href="/css/siteXML.editXML.css" type="text/css" />
<script src="/js/siteXML.editContent.js"></script>
<script src="/js/siteXML.editXML.js"></script>
'''
DEFAULT_THEME_HTML = '''
<!DOCTYPE html><html>
<head><meta http-equiv="Content-Type" content="text/html; charset=utf8">
<%META%>
<title><%TITLE%></title>
</head><body>
<div id="header" style="font-size: 3em"><%SITENAME%></div><div id="navi" style="float:left; width:180px"><%NAVI%></div>
<div id="main" style="padding:0 10px 20px 200px"><%CONTENT(main)%></div>
<div id="footer">This is <a href="http://www.sitexml.info">SiteXML</a> default theme<br/>SiteXML:PHP v1.0
<a href="/.site.xml">.site.xml</a></div></body></html>
'''
def xml_pairs(root):
"suppliemental function - replacement of php's foreach ($obj as $k => $v)"
for child in root.iterchildren():
yield child.tag, child
class SiteXML:
def __init__(self, environ):
self.environ = environ
self.session = environ['beaker.session']
self.status = '200 OK'
self._response_headers = []
self._response_body = ''
self.editMode = False
self.setEditMode()
self.obj = self.getObj()
self.pid = self.getPid()
self.pageObj = self.getPageObj(self.pid)
self.themeObj = self.getTheme()
self.basePath = self.getSiteBasePath()
@property
def response_headers(self):
return self._response_headers
@response_headers.setter
def response_headers(self, header):
self._response_headers.append(header)
@property
def response_body(self):
return self._response_body
@response_body.setter
def response_body(self, content):
self._response_body += content
def setEditMode(self):
if ('edit' in self.session) and ('username' in self.session):
self.response_headers = ('Cache-Control', 'no-cache, must-revalidate')
self.editMode = True
def loginScreen(self, edit=''):
return ('''
<!DOCTYPE html>
<html>
<head>
<title>Login</title>
</head>
<style>
.siteXML-logindiv {
width: 250px;
margin: auto;
}
.siteXML-logindiv div {
padding: 5px 0;
}
</style>
<body>
<div class="siteXML-logindiv">
<form action="/''' + (self.basePath if self.basePath is not None else '') + '''" method="post">
<div>
<input placeholder="Username" name="username" type="text" autofocus="true">
</div>
<div>
<input placeholder="Password" name="password" type="password">
</div>
<div>
''' + ('<input type="hidden" name="edit" value="true">' if edit == 'edit' else '') + '''
<input type="submit">
</div>
</form>
</div>
</body>
</html>
''')
def login(self, username, password, edit):
m = hashlib.md5()
m.update(password.encode())
password = m.hexdigest()
user = self.getUser(username)
if user:
if user[1] == password:
self.session['username'] = username
if edit:
self.session['edit'] = True
self.status = '302 Found'
self.response_headers = ('location', '/' + (self.basePath if self.basePath is not None else ''))
@staticmethod
def getUser(username):
if os.path.isfile(REAL_PATH + USERS_FILE):
with open(REAL_PATH + USERS_FILE, 'r', encoding='utf-8') as f:
for user in f:
user = user.split(':')
if user[0] == username:
user[1] = user[1].replace('\n', '')
return user
def logout(self):
self.session.delete()
@staticmethod
def getObj():
if os.path.isfile(REAL_PATH + SITEXML):
return ET.parse(REAL_PATH + SITEXML).getroot()
else:
raise FileNotFoundError
def getPid(self):
pid = None
d = dict(parse_qsl(self.environ['QUERY_STRING']))
if d == {}:
d = dict.fromkeys(self.environ['QUERY_STRING'].split('&'))
if self.environ['PATH_INFO'] == '': # mod_wsgi return empty PATH_INFO if in root
self.environ['PATH_INFO'] = '/'
if d.get('id') is not None:
pid = d['id']
elif self.environ['PATH_INFO'] != '/':
if self.environ['PATH_INFO'][0] == '/':
alias = self.environ['PATH_INFO'][1:]
else:
alias = self.environ['PATH_INFO']
alias = unquote_plus(alias)
aliasNoEndingSlash = alias.rstrip('/')
pid = self.getPageIdByAlias(aliasNoEndingSlash)
if pid is None:
defaultPid = self.getDefaultPid()
if defaultPid is None:
defaultPid = self.getFirstPagePid()
pid = defaultPid
if pid is None:
raise RuntimeError('Fatal error: no pages in this site')
else:
return pid
def getDefaultPid(self, pageObj=None):
"recursive"
if pageObj is None:
pageObj = self.obj
defaultPid = None
for k, v in xml_pairs(pageObj):
if k.lower() == 'page':
attr = self.attributes(v)
if attr.get('startpage') == 'yes':
defaultPid = attr.get('id')
break
else:
defaultPid = self.getDefaultPid(v)
if defaultPid is not None:
break
return defaultPid
def getPageIdByAlias(self, alias, parent=None):
" @ param {String} $alias - make sure that it doesn't end with slash - ' / ' "
pid = None
if parent is None:
parent = self.obj
for k, v in xml_pairs(parent):
if k.lower() == 'page':
attr = self.attributes(v)
if attr.get('alias') and attr.get('alias').rstrip() == alias:
pid = attr.get('id')
else:
pid = self.getPageIdByAlias(alias, v)
if pid:
break
return pid
def getFirstPagePid(self):
pid = None
for k, v in xml_pairs(self.obj):
if k.lower() == 'page':
attr = self.attributes(v)
pid = attr.get('id')
break
return pid
def getPageObj(self, pid):
if pid is not None:
pageObj = self.obj.xpath(".//page[@id='" + str(pid) + "']")
else:
pageObj = self.obj.xpath(".//page")
if pageObj is not None:
return pageObj[0]
else:
return None
def getTheme(self, pageObj=None):
"""
param {Object} page object.If not given, $this->pageObj will be used
returns {Object} theme by page object
"""
if pageObj is None:
pageObj = self.pageObj
attr = self.attributes(pageObj)
themeId = attr.get('theme')
if themeId is not None:
themeObj = self.obj.xpath(".//theme[@id='" + themeId + "']")
if themeObj is None:
self.error("Error: theme with id " + themeId + "does not exist")
else:
themeObj = self.obj.xpath(
".//theme[contains(translate(@default, 'ABCDEFGHIJKLMNOPQRSTUVWXYZ', 'abcdefghijklmnopqrstuvwxyz'), 'yes')]")
if themeObj is None:
themeObj = self.obj.xpath(".//theme")
if themeObj is not None and len(themeObj) > 0:
return themeObj[0]
else:
return None
def getThemeHTML(self, themeObj=None):
"""
@param {Object} theme || If not given, DEFAULT_THEME_HTML will be returned
@returns {String} theme html
"""
if themeObj is None:
self.error('SiteXML error: template does not exist, default template HTML will be used')
themeHTML = DEFAULT_THEME_HTML
else:
attr = self.attributes(themeObj)
dir_attr = '' if 'dir' not in attr else attr['dir']
path = THEMES_DIR
if path[-1] != '/':
path += '/'
if dir_attr != '': # meaningless
path += dir_attr
if path[-1] != '/':
path += '/'
if 'file' in attr:
path += attr['file']
if os.path.isfile(REAL_PATH + path):
with open(REAL_PATH + path, 'r', encoding='utf-8') as f:
themeHTML = f.read()
else:
self.error('SiteXML error: template file does not exist, default template HTML will be used')
themeHTML = DEFAULT_THEME_HTML
else:
self.error('SiteXML error: template file missing, default template HTML will be used')
themeHTML = DEFAULT_THEME_HTML
return themeHTML
def getTitle(self):
pageObj = self.pageObj
attr = self.attributes(pageObj)
return '' if 'title' not in attr else attr['title']
def getSiteName(self):
attr = self.attributes(self.obj)
if 'name' in attr:
siteName = attr['name']
else:
siteName = self.environ['SERVER_NAME']
return siteName
def getSiteBasePath(self):
attr = self.attributes(self.obj)
if 'base_path' in attr:
basePath = attr['base_path']
else:
basePath = None
return basePath
def getThemePath(self, themeObj=None):
if themeObj is None:
themeObj = self.themeObj
attr = self.attributes(themeObj)
if 'dir' in attr:
dir_attr = attr['dir']
if dir_attr[-1] != '/':
dir_attr += '/'
else:
dir_attr = ''
if self.basePath:
fullPath = '/' + self.basePath + '/' + THEMES_DIR + dir_attr
else:
fullPath = '/' + THEMES_DIR + dir_attr
return fullPath
def replaceMacroCommands(self, HTML):
macroCommands = [
'<%THEME_PATH%>',
'<%SITENAME%>',
'<%TITLE%>',
'<%META%>',
'<%NAVI%>'
]
replacement = [
self.getThemePath,
self.getSiteName,
self.getTitle,
self.getMetaHTML,
self.getNavi
]
edits = zip(macroCommands, replacement)
for search, replace in edits:
HTML = HTML.replace(search, replace())
return HTML
def getMetaHTML(self, pageObj=None):
if pageObj is None:
pageObj = self.pageObj
metaHTML = ''
for k, v in xml_pairs(self.obj):
if k.lower() == 'meta':
metaHTML += self.singleMetaHTML(v)
for k, v in xml_pairs(pageObj):
if k.lower() == 'meta':
metaHTML += self.singleMetaHTML(v)
return metaHTML
def singleMetaHTML(self, metaObj):
attr = self.attributes(metaObj)
metaHTML = '<meta'
if len(attr):
for k, v in attr.items():
metaHTML += ' ' + k + '="' + v + '"'
metaHTML += '>'
return metaHTML
def replaceThemeContent(self, HTML):
return self.replaceContent(HTML, 'theme')
def replacePageContent(self, HTML):
return self.replaceContent(HTML, 'page')
def replaceContent(self, HTML, where):
if where == 'page':
obj = self.pageObj
elif where == 'theme':
obj = self.themeObj
else:
return None
if obj is not None:
for k, v in xml_pairs(obj):
if k.lower() == 'content':
contents = ''
attr = self.attributes(v)
name = attr.get('name')
search = '<%CONTENT(' + name + ')%>'
if HTML.find(search) != -1:
if attr.get('type') == 'module':
file = MODULES_DIR + v.text
if os.path.isfile(REAL_PATH + file):
with open(REAL_PATH + file, 'r', encoding='utf-8') as f:
contents = f.read() # evaluate???
else:
self.error('Error: module file ' + file + ' does not exist')
else:
file = CONTENT_DIR + v.text
if os.path.isfile(REAL_PATH + file):
with open(REAL_PATH + file, 'r', encoding='utf-8') as f:
contents = f.read()
contents = '<div class="siteXML-content" cid="' + attr[
'id'] + '" cname="' + name + '">' + contents + '</div>'
else:
self.error('Error: content file ' + file + ' does not exist')
HTML = HTML.replace(search, contents)
return HTML
def getNavi(self, obj=None, maxlevel=0, level=0):
level += level
if obj is None:
obj = self.obj
HTML = ''
if maxlevel == 0 or maxlevel >= level:
for k, v in xml_pairs(obj):
if k.lower() == 'page':
attr = self.attributes(v)
if 'nonavi' in attr:
if attr.get('nonavi').lower() == 'yes':
continue
liClass = ' class="siteXML-current"' if attr.get('id') == self.pid else ''
href = '/' + attr['alias'] if 'alias' in attr else '/?id=' + attr.get('id')
if self.basePath is not None:
href = '/' + self.basePath + href
hasContent = False
for i in v.iterchildren():
if i.tag.lower() == 'content':
hasContent = True
break
if hasContent:
HTML += '<li' + liClass + ' pid="' + attr.get(
'id') + '"><a href="' + href + '" pid="' + attr.get('id') + '">' + attr['name'] + '</a>'
else:
HTML += '<li' + liClass + 'pid="' + attr.get('id') + '">' + attr.get('name') + ''
HTML += self.getNavi(v, maxlevel, level)
HTML += '</li>'
if HTML != '':
HTML = '<ul class=\"siteXML-navi level-' + str(level) + '\">' + HTML + '</ul>'
return HTML
def replaceNavi(self, HTML):
HTML = HTML.replace('<%NAVI%>', self.getNavi())
pos = HTML.find('<%NAVI')
while pos >= 0:
pos1 = HTML.find('(', pos + 1)
pos2 = HTML.find(')', pos + 1)
if pos1 >= 0 and pos2 >= 0:
arg = HTML[pos1 + 1:pos2 - pos1 - 1]
arg = arg.split(',')
else:
arg = None
if arg is not None:
needle = "<%NAVI(" + arg[0] + "," + arg[1] + ")%>"
pageObj = self.getPageObj(arg[0])
replace = self.getNavi(pageObj, arg[0])
HTML = HTML.replace(needle, replace)
pos = HTML.find('<%NAVI', pos + 1)
return HTML
def replacePlink(self, HTML):
pos = HTML.find('<%PLINK')
while pos >= 0:
pos1 = HTML.find('(', pos + 1)
pos2 = HTML.find(')', pos + 1)
if pos1 >= 0 and pos2 >= 0:
arg = HTML[pos1+1:pos2]
else:
arg = None
if arg:
needle = "<%PLINK(" + arg + ")%>"
replace = self.getPlink(arg)
HTML = HTML.replace(needle, replace)
pos = HTML.find('<%PLINK', pos + 1)
return HTML
def getPlink(self, id):
pageObj = self.getPageObj(id)
attr = self.attributes(pageObj)
if 'alias' in attr:
href = '/' + attr['alias']
else:
href = '/?id=' + id
pname = attr.get('name')
html = '<a href="' + href + '" plink="' + id + '" pid="' + id + '">' + pname + '</a>'
return html
def appendScripts(self, HTML):
pos = HTML.lower().find('</body>')
scripts = '<!--<script src="' + (
self.basePath + '/' if self.basePath else '') + '/js/jquery-2.1.3.min.js"></script>-->' + '<script src="' + (
self.basePath + '/' if self.basePath else '') + '/js/sitexml.js"></script>' + AJAX_BROWSING_SCRIPT + (
CONTENT_EDIT_SCRIPT if self.editMode else '')
if pos >= 0:
HTML = HTML[:pos] + scripts + HTML[pos:]
else:
HTML = scripts
return HTML
def page(self):
pageHTML = self.getThemeHTML(self.themeObj)
pageHTML = self.replaceNavi(pageHTML)
pageHTML = self.replacePageContent(pageHTML)
pageHTML = self.replaceThemeContent(pageHTML)
pageHTML = self.replaceMacroCommands(pageHTML)
pageHTML = self.replacePlink(pageHTML)
pageHTML = self.appendScripts(pageHTML)
return pageHTML
def error(self, error):
"@param {String} $error"
if DEBUG:
self.response_body = error + '\n'
def attributes(self, obj):
"@param {SimpleXML Object} $obj"
if obj is None:
return {}
attr = obj.items()
newattr = {}
for k, v in attr:
newattr[k.lower()] = v
return newattr
def getXML(self):
with open(REAL_PATH + SITEXML, 'r', encoding='utf-8') as f:
return f.read()
def saveXML(self, xmlstr):
with open(REAL_PATH + SITEXML, 'w', encoding='utf-8') as f:
return f.write(xmlstr)
def saveContent(self, cid, content):
file = self.obj.xpath(".//content[@id='" + str(cid) + "']")
file = CONTENT_DIR + file[0].text
if os.path.isfile(REAL_PATH + file):
try:
with open(REAL_PATH + file, 'w', encoding='utf-8') as f:
f.write(content)
self.response_body = 'Content saved'
except:
self.status = '500 Server Error'
self.error('Error: Content not saved: ' + file)
else:
self.status = '404 Not Found'
self.error('Error: Content file ' + file + ' does not exist')
def getContentByIdAndName(self, id, name):
c = self.obj.xpath(".//page[@id='" + str(id) + "']/content[@name='" + str(name) + "']")
attr = self.attributes(c[0])
cid = attr.get('id')
return self.getContent(cid, c)
def getContent(self, cid, cobj=None):
"""
@param {Integer | String} $cid - content id
@param {XML Object} $cobj - not required; content node object
"""
if cobj is None:
file = self.obj.xpath(".//content[@id='" + str(cid) + "']")
else:
file = cobj
file = CONTENT_DIR + file[0].text
if os.path.isfile(REAL_PATH + file):
with open(REAL_PATH + file, 'r', encoding='utf-8') as f:
content = f.read()
content = self.replacePlink(content)
else:
content = None
return content
def app(environ, start_response):
session = environ['beaker.session']
sitexml = SiteXML(environ)
sitexml.response_headers = ('Content-Type', 'text/html; charset=utf-8')
method = environ['REQUEST_METHOD']
if method == 'POST':
try:
request_body_size = int(environ.get('CONTENT_LENGTH', 0))
except ValueError:
request_body_size = 0
request_body = environ['wsgi.input'].read(request_body_size)
d = dict(parse_qsl(request_body.decode()))
if d.get('sitexml') is not None:
if session.get('username') is None:
sitexml.status = 'HTTP/1.1 401 Access denied'
elif sitexml.saveXML(d.get('sitexml')):
sitexml.response_body = 'siteXML saved'
else:
sitexml.response_body = sitexml.error('siteXML was not saved')
elif (d.get('cid') is not None) and (d.get('content') is not None):
if session.get('username') is None:
sitexml.status = 'HTTP/1.1 401 Access denied'
else:
sitexml.saveContent(d.get('cid'), d.get('content'))
elif d.get('username') is not None and d.get('password') is not None:
sitexml.login(d['username'], d['password'], d.get('edit'))
elif method == 'GET':
d = dict(parse_qsl(environ['QUERY_STRING']))
if d == {}:
d = dict.fromkeys(environ['QUERY_STRING'].split('&'))
if 'logout' in d:
sitexml.logout()
if 'edit' in d:
if 'username' in d:
session['edit'] = True
sitexml.response_body = sitexml.page()
else:
sitexml.response_body = sitexml.loginScreen('edit')
elif 'sitexml' in d:
sitexml.response_headers = ('Content-Type', 'text/xml; charset=utf-8')
sitexml.response_body = sitexml.getXML()
elif 'login' in d:
sitexml.response_body = sitexml.loginScreen()
elif d.get('cid') is not None:
sitexml.response_body = sitexml.getContent(d.get('cid'))
elif (d.get('id') is not None) and (d.get('name') is not None):
sitexml.response_body = sitexml.getContentByIdAndName(d.get('id'), d.get('name'))
else:
sitexml.response_body = sitexml.page()
else:
sitexml.status = '405 Method Not Allowed'
sitexml.response_headers = ('Content-Type', 'text/html; charset=utf-8')
sitexml.response_headers = ('Allow', 'GET, POST')
start_response(sitexml.status, sitexml.response_headers)
return [sitexml.response_body.encode()]
session_opts = {
'session.auto': True,
'session.type': 'cookie',
'session.validate_key': 'ABCDEF',
'session.cookie_expires': True,
'session.httponly': True,
'session.secure': True
}
session_app = SessionMiddleware(app, session_opts)
wsgi_app = static.Cling(REAL_PATH, not_found=session_app, method_not_allowed=session_app)
application = session_app
if __name__ == '__main__':
try:
from wsgiref.simple_server import make_server
httpd = make_server('', 8080, wsgi_app)
print('Serving on port 8080...')
httpd.serve_forever()
except KeyboardInterrupt:
print('Goodbye.')