[gen] More work on LDAP authentication.
This commit is contained in:
Gaetan Delannay
parent
79d89aca2b
commit
e51308b277
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@ -976,29 +976,19 @@ class ToolMixin(BaseMixin):
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# --------------------------------------------------------------------------
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# Authentication-related methods
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# --------------------------------------------------------------------------
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def _encryptPassword(self, password):
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'''Returns the encrypted version of clear p_password.'''
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return self.acl_users._encryptPassword(password)
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def identifyUser(self, alsoSpecial=False):
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'''To identify a user means: get its login and password. There are
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several places to look for this information: http authentication,
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cookie of credentials coming from the web form.
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def getUser(self, authentify=False):
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'''Gets the current user. If p_authentify is True, in addition to
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finding the logged user and returning it (=identification), we check
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if found credentials are valid (=authentification).'''
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# I. Identify the user (=find its login and password). If identification
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# fails, if we don't need to authentify the user (p_authentify is
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# False), we consider that the current user is one of those special
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# users: anon (corresponds to an anonymous user) or system (the
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# technical user representing the system itself, running at startup or
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# in batch mode).
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If no user could be identified, and p_alsoSpecial is True, we will
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nevertheless identify a "special user": "system", representing the
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system itself (running at startup or in batch mode) or "anon",
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representing an anonymous user.'''
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tool = self.appy()
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req = tool.request
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# Try first to return the user that can be cached on the request. In
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# this case, we suppose authentification has previously been done, and
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# we just return the cached user.
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if hasattr(req, 'user'): return req.user
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login = password = None
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isSpecial = False
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# Ia. Identify the user from http basic authentication.
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# a. Identify the user from http basic authentication.
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if getattr(req, '_auth', None):
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# HTTP basic authentication credentials are present (used when
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# connecting to the ZMI). Decode it.
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@ -1009,45 +999,25 @@ class ToolMixin(BaseMixin):
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login, password = base64.decodestring(creds).split(':', 1)
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except Exception, e:
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pass
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# Ib. Identify the user from the authentication cookie.
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# b. Identify the user from the authentication cookie.
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if not login:
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login, password = gutils.readCookie(req)
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# Ic. Identify the user from the authentication form.
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# c. Identify the user from the authentication form.
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if not login:
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login = req.get('__ac_name', None)
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password = req.get('__ac_password', None)
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# Stop the identification process here if we needed to authentify the
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# user: this user does not exist.
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if not login and authentify: return
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# Id. All the identification methods failed. So identify the user as
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# Stop identification here if we don't need to return a special user
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if not alsoSpecial: return login, password
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# d. All the identification methods failed. So identify the user as
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# "anon" or "system".
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if not login and not authentify:
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if not login:
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# If we have a real request object, it is the anonymous user.
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login = (req.__class__.__name__ == 'Object') and 'system' or 'anon'
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isSpecial = True
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# Now, get the User instance from a query in the catalog.
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user = tool.search1('User', noSecurity=True, login=login)
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# It is possible that we find no user here: it happens before users
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# "anon" and "system" are created, at first startup.
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if not user: return
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# Authentify the user if required
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if authentify and not isSpecial:
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if not user.checkPassword(password):
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# Disable the authentication cookie.
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req.RESPONSE.expireCookie('_appy_', path='/')
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return
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# Create an authentication cookie for this user.
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gutils.writeCookie(login, password, req)
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# Cache the user and some precomputed values, for performance.
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req.user = user
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req.userRoles = user.getRoles()
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req.userLogins = user.getLogins()
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req.zopeUser = user.getZopeUser()
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return user
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return login, password
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def _ldapAuthenticate(self, login, password):
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'''Performs a LDAP-based authentication. Returns True if authentication
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succeeds.'''
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def getLdapUser(self, login, password):
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'''Returns a local User instance corresponding to a LDAP user if p_login
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and p_password correspong to a valid LDAP user.'''
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# Check if LDAP is configured.
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cfg = self.getProductConfig(True).ldap
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if not cfg: return
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@ -1069,8 +1039,8 @@ class ToolMixin(BaseMixin):
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# The password is correct. We can create/update our local user
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# corresponding to this LDAP user.
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userParams = cfg.getUserParams(ldapData)
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user = self.search1('User', noSecurity=True, login=login)
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tool = self
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tool = self.appy()
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user = tool.search1('User', noSecurity=True, login=login)
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if user:
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# Update the user with fresh info about him from the LDAP
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for name, value in userParams.iteritems():
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@ -1081,6 +1051,47 @@ class ToolMixin(BaseMixin):
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user = tool.create('users', login=login, source='ldap',**userParams)
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return user
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def getUser(self, authentify=False, source='zodb'):
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'''Gets the current user. If p_authentify is True, in addition to
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finding the logged user and returning it (=identification), we check
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if found credentials are valid (=authentification).
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If p_authentify is True and p_source is "zodb", authentication is
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performed locally. Else (p_source is "ldap"), authentication is
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performed on a LDAP (if a LDAP configuration is found).'''
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tool = self.appy()
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req = tool.request
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# Try first to return the user that can be cached on the request. In
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# this case, we suppose authentication has previously been done, and we
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# just return the cached user.
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if hasattr(req, 'user'): return req.user
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# Identify the user (=find its login and password). If we don't need
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# to authentify the user, we ask to identify a user or, if impossible,
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# a special user.
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login, password = self.identifyUser(alsoSpecial=not authentify)
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# Stop here if no user was found and authentication was required.
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if authentify and not login: return
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# Now, get the User instance.
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if source == 'zodb':
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user = tool.search1('User', noSecurity=True, login=login)
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elif source == 'ldap':
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user = self.getLdapUser(login, password)
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if not user: return
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# Authentify the user if required.
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if authentify:
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if not user.checkPassword(password):
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# Disable the authentication cookie.
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req.RESPONSE.expireCookie('_appy_', path='/')
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return
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# Create an authentication cookie for this user.
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gutils.writeCookie(login, password, req)
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# Cache the user and some precomputed values, for performance.
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req.user = user
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req.userRoles = user.getRoles()
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req.userLogins = user.getLogins()
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req.zopeUser = user.getZopeUser()
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return user
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def performLogin(self):
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'''Logs the user in.'''
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rq = self.REQUEST
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@ -1092,7 +1103,8 @@ class ToolMixin(BaseMixin):
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return self.goto(urlBack, msg)
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# Authenticate the user.
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login = rq.get('__ac_name', None)
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if self.getUser(authentify=True):
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if self.getUser(authentify=True) or \
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self.getUser(authentify=True, source='ldap'):
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msg = self.translate('login_ok')
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logMsg = 'User "%s" logged in.' % login
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else:
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@ -1107,7 +1119,7 @@ class ToolMixin(BaseMixin):
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userId = self.getUser().login
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# Perform the logout in acl_users
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rq.RESPONSE.expireCookie('_appy_', path='/')
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# Invalidate session.
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# Invalidate the user session.
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try:
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sdm = self.session_data_manager
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except AttributeError, ae:
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@ -35,8 +35,9 @@ class UserWrapper(AbstractWrapper):
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# can potentially be changed.
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if not self.login or (login != self.login):
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# A new p_login is requested. Check if it is valid and free.
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# Firstly, the login can't be the id of the whole site or "admin".
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if login == 'admin': return self.translate('login_reserved')
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# Some logins are not allowed.
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if login in ('admin', 'anon', 'system'):
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return self.translate('login_reserved')
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# Check that no user or group already uses this login.
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if self.count('User', noSecurity=True, login=login) or \
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self.count('Group', noSecurity=True, login=login):
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@ -58,6 +59,10 @@ class UserWrapper(AbstractWrapper):
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# also own a User instance) wants to edit information about himself.
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if self.user.login == self.login: return 'edit'
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def encryptPassword(self, clearPassword):
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'''Returns p_clearPassword, encrypted.'''
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return self.o.getTool().acl_users._encryptPassword(clearPassword)
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def setPassword(self, newPassword=None):
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'''Sets a p_newPassword for self. If p_newPassword is not given, we
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generate one. This method returns the generated password (or simply
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@ -70,7 +75,7 @@ class UserWrapper(AbstractWrapper):
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login = self.login
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zopeUser = self.getZopeUser()
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tool = self.tool.o
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zopeUser.__ = tool._encryptPassword(newPassword)
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zopeUser.__ = self.encryptPassword(newPassword)
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if self.user.login == login:
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# The user for which we change the password is the currently logged
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# user. So update the authentication cookie, too.
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@ -91,7 +96,7 @@ class UserWrapper(AbstractWrapper):
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self.login = newLogin
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# Update the corresponding Zope-level user
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aclUsers = self.o.acl_users
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zopeUser = aclUsers.getUser(oldLogin)
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zopeUser = aclUsers.data[oldLogin]
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zopeUser.name = newLogin
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del aclUsers.data[oldLogin]
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aclUsers.data[newLogin] = zopeUser
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@ -150,20 +155,25 @@ class UserWrapper(AbstractWrapper):
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self.roles = roles
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def onEdit(self, created):
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'''Triggered when a User is created or updated.'''
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login = self.login
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# Is it a local User or a LDAP User?
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isLocal = self.source == 'zodb'
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# Ensure correctness of some infos about this user.
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if isLocal:
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self.updateTitle()
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self.ensureAdminIsManager()
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aclUsers = self.o.acl_users
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login = self.login
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if created:
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# Create the corresponding Zope user
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aclUsers._doAddUser(login, self.password1, self.roles, ())
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zopeUser = aclUsers.getUser(login)
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# Create the corresponding Zope user.
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from AccessControl.User import User as ZopeUser
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password = self.encryptPassword(self.password1)
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zopeUser = ZopeUser(login, password, self.roles, ())
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# Add it in acl_users if it is a local user.
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if isLocal: self.o.acl_users.data[login] = zopeUser
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# Add it in self.o._zopeUser if it is a LDAP user
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else: self.o._zopeUser = zopeUser
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# Remove our own password copies
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self.password1 = self.password2 = ''
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from persistent.mapping import PersistentMapping
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# The following dict will store, for every group, global roles
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# granted to it.
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zopeUser.groups = PersistentMapping()
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else:
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# Update the login itself if the user has changed it.
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oldLogin = self.o._oldLogin
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@ -188,16 +198,20 @@ class UserWrapper(AbstractWrapper):
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return self._callCustom('onEdit', created)
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def mayEdit(self):
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'''No one can edit users "system" and "anon".'''
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'''No one can edit users "system" and "anon"; no one can edit non-zodb
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users.'''
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if self.o.id in ('system', 'anon'): return
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if self.source != 'zodb': return
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# Call custom "mayEdit" when present.
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custom = self._getCustomMethod('mayEdit')
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if custom: return self._callCustom('mayEdit')
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return True
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def mayDelete(self):
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'''No one can delete users "system", "anon" and "admin".'''
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'''No one can delete users "system", "anon" and "admin"; no one can
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delete non-zodb users.'''
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if self.o.id in ('system', 'anon', 'admin'): return
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if self.source != 'zodb': return
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# Call custom "mayDelete" when present.
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custom = self._getCustomMethod('mayDelete')
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if custom: return self._callCustom('mayDelete')
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@ -205,11 +219,14 @@ class UserWrapper(AbstractWrapper):
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def getZopeUser(self):
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'''Gets the Zope user corresponding to this user.'''
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return self.o.acl_users.getUser(self.login)
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if self.source == 'zodb':
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return self.o.acl_users.data.get(self.login, None)
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return self.o._zopeUser
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def onDelete(self):
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'''Before deleting myself, I must delete the corresponding Zope user.'''
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self.o.acl_users._doDelUsers([self.login])
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'''Before deleting myself, I must delete the corresponding Zope user
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(for local users only).'''
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if self.source == 'zodb': del self.o.acl_users.data[self.login]
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self.log('User "%s" deleted.' % self.login)
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# Call a custom "onDelete" if any.
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return self._callCustom('onDelete')
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