appypod-rattail/gen/wrappers/UserWrapper.py

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# ------------------------------------------------------------------------------
from appy.px import Px
from appy.fields.string import String
from appy.gen import WorkflowOwner
from appy.gen.layout import summaryPageLayouts
from appy.gen.wrappers import AbstractWrapper
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from appy.gen import utils as gutils
from appy.shared import utils as sutils
# ------------------------------------------------------------------------------
class UserWrapper(AbstractWrapper):
workflow = WorkflowOwner
specialUsers = ('system', 'anon', 'admin')
layouts = summaryPageLayouts
# Display, in the user strip, links to the User instance of the logged user.
pxUserLinks = Px('''
<td class="userStripText" align=":dright">
<a href=":user.url"><img src=":url('user')"/>
<span style="padding: 0 3px">:user.getTitle()</span></a>
<!-- Page for modifying the password -->
<a if="user.showPassword()" class="changePassword"
href=":'%s/edit?page=passwords' % user.url">:_('change_password')</a>
</td>''')
def getTitle(self, normalized=False):
'''Returns a nice name for this user, based on available information:
name/first name or title or login. If p_normalized is True, special
chars (like accents) are converted to ascii chars.'''
# Manage the special case of an anonymous user.
login = self.login
if login == 'anon':
res = self.translate('anonymous')
else:
res = self.title or login
if not normalized: return res
return sutils.normalizeString(name)
def showLogin(self):
'''When must we show the login field?'''
if self.o.isTemporary(): return 'edit'
# The manager has the possibility to change the login itself (local
# users only).
if self.user.has_role('Manager') and (self.source == 'zodb'):
return True
return ('view', 'result')
def showName(self):
'''Name and first name, by default, can not be edited for non-local
users.'''
if (self.source != 'zodb'): return ('view', 'result')
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return True
def showEmail(self):
'''In most cases, email is the login. Show the field only if it is not
the case.'''
email = self.email
if email and (email != self.login):
if (self.source != 'zodb'): return ('view', 'result')
return True
def showRoles(tool):
'''Only the admin can view or edit roles.'''
return tool.user.has_role('Manager')
def validateLogin(self, login):
'''Is this p_login valid?'''
# 2 cases: (1) The user is being created and has no login yet, or
# (2) The user is being edited and has already a login, that
# can potentially be changed.
if not self.login or (login != self.login):
# A new p_login is requested. Check if it is valid and free.
# Some logins are not allowed.
if login in self.specialUsers:
return self.translate('login_reserved')
# Check that no user or group already uses this login.
if self.count('User', noSecurity=True, login=login) or \
self.count('Group', noSecurity=True, login=login):
return self.translate('login_in_use')
return True
def validatePassword(self, password):
'''Is this p_password valid?'''
# Password must be at least 5 chars length
if len(password) < 5:
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return self.translate('password_too_short', mapping={'nb':5})
return True
def showPassword(self):
'''When must we show the 2 fields for entering a password ?'''
# When someone creates the user.
if self.o.isTemporary(): return 'edit'
# When the user itself (we don't check role Owner because a Manager can
# also own a User instance) wants to edit information about himself.
if (self.user.login == self.login) and (self.source == 'zodb'):
return 'edit'
def encryptPassword(self, clearPassword):
'''Returns p_clearPassword, encrypted.'''
return self.o.getTool().acl_users._encryptPassword(clearPassword)
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def setPassword(self, newPassword=None, log=True):
'''Sets a p_newPassword for self. If p_newPassword is not given, we
generate one. This method returns the generated password (or simply
p_newPassword if no generation occurred).'''
if newPassword != None:
msgPart = 'changed'
else:
newPassword = self.getField('password1').generatePassword()
msgPart = 'generated'
login = self.login
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zopeUser = self.getZopeUser()
tool = self.tool.o
zopeUser.__ = self.encryptPassword(newPassword)
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if self.user and (self.user.login == login):
# The user for which we change the password is the currently logged
# user. So update the authentication cookie, too.
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gutils.writeCookie(login, newPassword, self.request)
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if log:
self.log('password %s for %s.' % (msgPart, login))
return newPassword
def setEncryptedPassword(self, encryptedPassword):
'''Sets p_encryptedPassword for this user. m_setPassword above starts
for a clear (given or generated) password. This one simply sets an
already encrypted password for this user.'''
self.getZopeUser().__ = encryptedPassword
def checkPassword(self, clearPassword):
'''Returns True if p_clearPassword is the correct password for this
user.'''
encryptedPassword = self.getZopeUser()._getPassword()
from AccessControl.AuthEncoding import pw_validate
return pw_validate(encryptedPassword, clearPassword)
def getMailRecipient(self):
'''Returns, for this user, the "recipient string" (first name, name,
email) as can be used for sending an email.'''
res = self.email or self.login
# Ensure this is really an email
if not String.EMAIL.match(res): return
return '%s <%s>' % (self.title, res)
def setLogin(self, oldLogin, newLogin):
'''Changes the login of this user from p_oldLogin to p_newLogin.'''
self.login = newLogin
# Update the corresponding Zope-level user
aclUsers = self.o.acl_users
zopeUser = aclUsers.data[oldLogin]
zopeUser.name = newLogin
del aclUsers.data[oldLogin]
aclUsers.data[newLogin] = zopeUser
# Update the email if the email corresponds to the login.
email = self.email
if email == oldLogin:
self.email = newLogin
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# Update the title
self.updateTitle()
# Browse all objects of the database and update potential local roles
# that referred to the old login.
context = {'nb': 0, 'old': oldLogin, 'new': newLogin}
for className in self.tool.o.getAllClassNames():
self.compute(className, context=context, noSecurity=True,
expression="ctx['nb'] += obj.o.applyUserIdChange(" \
"ctx['old'], ctx['new'])")
self.log("login %s renamed to %s." % (oldLogin, newLogin))
self.log('login change: local roles updated in %d object(s).' % \
context['nb'])
def getGrantableRoles(self):
'''Returns the list of roles that the admin can grant to a user.'''
res = []
for role in self.o.getProductConfig().grantableRoles:
res.append( (role, self.translate('role_%s' % role)) )
return res
def validate(self, new, errors):
'''Inter-field validation.'''
page = self.request.get('page', 'main')
self.o._oldLogin = None
if page == 'main':
if hasattr(new, 'password1') and (new.password1 != new.password2):
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msg = self.translate('passwords_mismatch')
errors.password1 = msg
errors.password2 = msg
# Remember the previous login
if self.login: self.o._oldLogin = self.login
return self._callCustom('validate', new, errors)
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def updateTitle(self):
'''Sets a title for this user.'''
if self.firstName and self.name:
self.title = '%s %s' % (self.name, self.firstName)
else:
self.title = self.title or self.login
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def ensureAdminIsManager(self):
'''User 'admin' must always have role 'Manager'.'''
if self.o.id == 'admin':
roles = self.roles
if 'Manager' not in roles:
if not roles: roles = ['Manager']
else: roles.append('Manager')
self.roles = roles
def getSupTitle(self, nav):
'''Display a specific icon if the user is a local copy of an external
(ie, ldap) user.'''
if self.source == 'zodb': return
return '<img src="%s/ui/external.png"/>' % self.o.getTool().getSiteUrl()
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def onEdit(self, created):
'''Triggered when a User is created or updated.'''
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login = self.login
# Is it a local User or a LDAP User?
isLocal = self.source == 'zodb'
# Ensure correctness of some infos about this user.
if isLocal:
self.updateTitle()
self.ensureAdminIsManager()
if created:
# Create the corresponding Zope user.
from AccessControl.User import User as ZopeUser
password = self.encryptPassword(self.password1)
zopeUser = ZopeUser(login, password, self.roles, ())
# Add it in acl_users if it is a local user.
if isLocal: self.o.acl_users.data[login] = zopeUser
# Add it in self.o._zopeUser if it is a LDAP user
else: self.o._zopeUser = zopeUser
# Remove our own password copies
self.password1 = self.password2 = ''
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else:
# Update the login itself if the user has changed it.
oldLogin = self.o._oldLogin
if oldLogin and (oldLogin != login):
self.setLogin(oldLogin, login)
del self.o._oldLogin
# Update roles at the Zope level.
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zopeUser = self.getZopeUser()
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zopeUser.roles = self.roles
# Update the password if the user has entered new ones.
rq = self.request
if rq.has_key('password1'):
self.setPassword(rq['password1'])
self.password1 = self.password2 = ''
# "self" must be owned by its Zope user.
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if 'Owner' not in self.o.get_local_roles_for_userid(login):
self.o.manage_addLocalRoles(login, ('Owner',))
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# If the user was created by anon|system, anon|system can't stay Owner.
for login in ('anon', 'system'):
if login in self.o.__ac_local_roles__:
del self.o.__ac_local_roles__[login]
return self._callCustom('onEdit', created)
def mayEdit(self):
'''No one can edit users "system" and "anon".'''
if self.o.id in ('anon', 'system'): return
# Call custom "mayEdit" when present.
custom = self._getCustomMethod('mayEdit')
if custom: return self._callCustom('mayEdit')
return True
def mayDelete(self):
'''No one can delete users "system", "anon" and "admin".'''
if self.o.id in self.specialUsers: return
# Call custom "mayDelete" when present.
custom = self._getCustomMethod('mayDelete')
if custom: return self._callCustom('mayDelete')
return True
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def getZopeUser(self):
'''Gets the Zope user corresponding to this user.'''
if self.source == 'zodb':
return self.o.acl_users.data.get(self.login, None)
return self.o._zopeUser
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def onDelete(self):
'''Before deleting myself, I must delete the corresponding Zope user
(for local users only).'''
if self.source == 'zodb': del self.o.acl_users.data[self.login]
self.log('user %s deleted.' % self.login)
# Call a custom "onDelete" if any.
return self._callCustom('onDelete')
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def getLogins(self, groupsOnly=False):
'''Gets all the logins that can "match" this user: it own login
(excepted if p_groupsOnly is True) and the logins of all the groups
he belongs to.'''
# Try first to get those logins from a cache on the request, if this
# user corresponds to the logged user.
rq = self.request
if (self.user == self) and hasattr(rq, 'userLogins'):
return rq.userLogins
# Compute it.
res = [group.login for group in self.groups]
if not groupsOnly: res.append(self.login)
return res
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def getRoles(self):
'''This method returns all the global roles for this user, not simply
self.roles, but also "ungrantable roles" (like Anonymous or
Authenticated) and roles inherited from group membership.'''
# Try first to get those roles from a cache on the request, if this user
# corresponds to the logged user.
rq = self.request
if (self.user == self) and hasattr(rq, 'userRoles'):
return rq.userRoles
# Compute it.
res = list(self.roles)
# Add ungrantable roles
if self.o.id == 'anon':
res.append('Anonymous')
else:
res.append('Authenticated')
# Add group global roles
for group in self.groups:
for role in group.roles:
if role not in res: res.append(role)
return res
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def getRolesFor(self, obj):
'''Gets the roles the user has in the context of p_obj: its global roles
+ its roles which are local to p_obj.'''
obj = obj.o
# Start with user global roles.
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res = self.getRoles()
# Add local roles, granted to the user directly or to one of its groups.
localRoles = getattr(obj.aq_base, '__ac_local_roles__', None)
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if not localRoles: return res
# Gets the logins of this user and all its groups.
logins = self.getLogins()
for login, roles in localRoles.iteritems():
# Ignore logins not corresponding to this user.
if login not in logins: continue
for role in roles:
if role not in res: res.append(role)
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return res
def has_role(self, role, obj=None):
'''Has the logged user some p_role? If p_obj is None, check if the user
has p_role globally; else, check if he has this p_role in the context
of p_obj.'''
if obj:
roles = self.getRolesFor(obj)
else:
roles = self.getRoles()
return role in roles
def has_permission(self, permission, obj):
'''Has the logged user p_permission on p_obj?'''
obj = obj.o
# What are the roles which are granted p_permission on p_obj?
allowedRoles = obj.getRolesFor(permission)
# Grant access if "Anonymous" is among roles.
if ('Anonymous' in allowedRoles): return True
# Grant access if "Authenticated" is among p_roles and the user is not
# anonymous.
if ('Authenticated' in allowedRoles) and (self.o.id != 'anon'):
return True
# Grant access based on global user roles.
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for role in self.getRoles():
if role in allowedRoles: return True
# Grant access based on local roles
localRoles = getattr(obj.aq_base, '__ac_local_roles__', None)
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if not localRoles: return
# Gets the logins of this user and all its groups.
userLogins = self.getLogins()
for login, roles in localRoles.iteritems():
# Ignore logins not corresponding to this user.
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if login not in userLogins: continue
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for role in roles:
if role in allowedRoles: return True
# ------------------------------------------------------------------------------