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# -*- coding: utf-8 -*-
#
# cms.py - simple WSGI/Python based CMS script
#
# Copyright (C) 2011-2024 Michael Buesch <m@bues.ch>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#from cms.cython_support cimport * #@cy
from cms.exception import *
from cms.pageident import *
from cms.util import fs, datetime #+cimport
from cms.socket import *
import re
import sys
import importlib.machinery
__all__ = [
"CMSDatabase",
]
class CMSDatabase(object):
validate = CMSPageIdent.validateName
def __init__(self, rundir):
try:
self.dbsock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
self.dbsock.connect(str(rundir / "cms-fsd.sock"))
except Exception:
raise CMSException(500, "cms-fsd communication error")
try:
self.postsock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
self.postsock.connect(str(rundir / "cms-postd.sock"))
except Exception:
raise CMSException(500, "cms-postd communication error")
def __communicateDb(self, msg):
try:
self.dbsock.sendall(msg.pack())
return recv_message(self.dbsock, MAGIC_DB)
except Exception:
raise CMSException(500, "cms-fsd communication error")
def __communicatePost(self, msg):
try:
self.postsock.sendall(msg.pack())
return recv_message(self.postsock, MAGIC_POST)
except Exception:
raise CMSException(500, "cms-postd communication error")
@staticmethod
def __encode(s):
try:
if s is not None:
return s.encode("UTF-8", "strict")
except UnicodeError:
pass
return b""
@staticmethod
def __decode(b):
try:
if b is not None:
return b.decode("UTF-8", "strict")
except UnicodeError:
pass
return ""
def getNavStop(self, pageIdent):
reply = self.__communicateDb(MsgGetPage(
path=pageIdent.getFilesystemPath(),
get_title=False,
get_data=False,
get_stamp=False,
get_prio=False,
get_redirect=False,
get_nav_stop=True,
get_nav_label=False,
))
nav_stop = bool(reply.nav_stop)
return nav_stop
def getHeaders(self, pageIdent):
reply = self.__communicateDb(MsgGetHeaders(
path=pageIdent.getFilesystemPath(),
))
assert_is_msg(reply, MsgHeaders)
data = self.__decode(reply.data)
return data
def getPage(self, pageIdent):
reply = self.__communicateDb(MsgGetPage(
path=pageIdent.getFilesystemPath(),
get_title=True,
get_data=True,
get_stamp=True,
get_prio=False,
get_redirect=True,
get_nav_stop=False,
get_nav_label=False,
))
assert_is_msg(reply, MsgPage)
redirect = self.__decode(reply.redirect).strip()
if redirect:
raise CMSException301(redirect)
title = self.__decode(reply.title)
data = self.__decode(reply.data)
stamp = datetime.utcfromtimestamp(reply.stamp or 0)
return (title, data, stamp)
def getPageTitle(self, pageIdent):
reply = self.__communicateDb(MsgGetPage(
path=pageIdent.getFilesystemPath(),
get_title=True,
get_data=False,
get_stamp=False,
get_prio=False,
get_redirect=False,
get_nav_stop=False,
get_nav_label=False,
))
assert_is_msg(reply, MsgPage)
title = self.__decode(reply.title)
return title
def getPageStamp(self, pageIdent):
reply = self.__communicateDb(MsgGetPage(
path=pageIdent.getFilesystemPath(),
get_title=False,
get_data=False,
get_stamp=True,
get_prio=False,
get_redirect=False,
get_nav_stop=False,
get_nav_label=False,
))
assert_is_msg(reply, MsgPage)
stamp = datetime.utcfromtimestamp(reply.stamp or 0)
return stamp
# Get a list of sub-pages.
# Returns list of (pagename, navlabel, prio)
def getSubPages(self, pageIdent, sortByPrio=True):
reply = self.__communicateDb(MsgGetSubPages(
path=pageIdent.getFilesystemPath(),
))
assert_is_msg(reply, MsgSubPages)
res = []
for i in range(len(reply.pages)):
pagename = self.__decode(reply.pages[i])
navlabel = self.__decode(reply.nav_labels[i]).strip()
prio = reply.prios[i]
res.append( (pagename, navlabel, prio) )
if sortByPrio:
res.sort(key = lambda e: "%010d_%s" % (e[2], e[1]))
return res
# Get the contents of a @MACRO().
def getMacro(self, macroname, pageIdent=None):
reply = self.__communicateDb(MsgGetMacro(
parent=pageIdent.getFilesystemPath() if pageIdent is not None else "",
name=macroname,
))
assert_is_msg(reply, MsgMacro)
data = self.__decode(reply.data)
return '\n'.join( l for l in data.splitlines() if l )
def getString(self, name, default=None):
reply = self.__communicateDb(MsgGetString(
name=name,
))
assert_is_msg(reply, MsgString)
string = self.__decode(reply.data).strip()
if string:
return string
return default or ""
def getImage(self, name):
name = CMSPageIdent.validateSafePathComponent(name)
reply = self.__communicateDb(MsgGetImage(
name=name,
))
assert_is_msg(reply, MsgImage)
return reply.data
def runPostHandler(self, pageIdent, formFields, query):
reply = self.__communicatePost(MsgRunPostHandler(
path=pageIdent.getFilesystemPath() + "/post.py",
query=query.items(),
form_fields=formFields.items(),
))
assert_is_msg(reply, MsgPostHandlerResult)
if reply.error:
raise CMSException(400, reply.error)
return bytes(reply.body), reply.mime
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