| 1 | """Authentication for WAeUP portals. |
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| 2 | """ |
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| 3 | import grok |
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| 4 | from zope.app.authentication.session import SessionCredentialsPlugin |
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| 5 | from zope.app.authentication.interfaces import (ICredentialsPlugin, |
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| 6 | IAuthenticatorPlugin, |
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| 7 | IPrincipalInfo, |
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| 8 | IPasswordManager) |
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| 9 | from zope.component import getUtility |
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| 10 | from zope.securitypolicy.interfaces import IPrincipalRoleManager |
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| 11 | from zope.securitypolicy.principalrole import principalRoleManager |
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| 12 | from waeup.interfaces import IUserAccount |
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| 13 | import waeup.permissions |
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| 14 | |
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| 15 | def setup_authentication(pau): |
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| 16 | """Set up plugguble authentication utility. |
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| 17 | |
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| 18 | Sets up an IAuthenticatorPlugin and |
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| 19 | ICredentialsPlugin (for the authentication mechanism) |
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| 20 | """ |
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| 21 | pau.credentialsPlugins = ['No Challenge if Authenticated', 'credentials'] |
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| 22 | pau.authenticatorPlugins = ['users'] |
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| 23 | |
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| 24 | class WAeUPSessionCredentialsPlugin(grok.GlobalUtility, |
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| 25 | SessionCredentialsPlugin): |
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| 26 | grok.provides(ICredentialsPlugin) |
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| 27 | grok.name('credentials') |
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| 28 | |
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| 29 | loginpagename = 'login' |
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| 30 | loginfield = 'form.login' |
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| 31 | passwordfield = 'form.password' |
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| 32 | |
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| 33 | class PrincipalInfo(object): |
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| 34 | grok.implements(IPrincipalInfo) |
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| 35 | |
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| 36 | def __init__(self, id, title, description): |
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| 37 | self.id = id |
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| 38 | self.title = title |
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| 39 | self.description = description |
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| 40 | self.credentialsPlugin = None |
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| 41 | self.authenticatorPlugin = None |
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| 42 | |
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| 43 | class Account(grok.Model): |
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| 44 | grok.implements(IUserAccount) |
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| 45 | |
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| 46 | |
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| 47 | def __init__(self, name, password, title=None, description=None, |
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| 48 | roles = []): |
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| 49 | self.name = name |
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| 50 | if title is None: |
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| 51 | title = name |
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| 52 | if description is None: |
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| 53 | description = title |
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| 54 | self.title = title |
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| 55 | self.description = description |
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| 56 | self.setPassword(password) |
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| 57 | self.setRoles(roles) |
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| 58 | |
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| 59 | def setPassword(self, password): |
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| 60 | passwordmanager = getUtility(IPasswordManager, 'SHA1') |
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| 61 | self.password = passwordmanager.encodePassword(password) |
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| 62 | |
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| 63 | def checkPassword(self, password): |
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| 64 | passwordmanager = getUtility(IPasswordManager, 'SHA1') |
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| 65 | return passwordmanager.checkPassword(self.password, password) |
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| 66 | |
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| 67 | def getRoles(self): |
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| 68 | prm = self._getPrincipalRoleManager() |
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| 69 | roles = [x[0] for x in prm.getRolesForPrincipal(self.name) |
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| 70 | if x[0].startswith('waeup.')] |
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| 71 | return roles |
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| 72 | |
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| 73 | def setRoles(self, roles): |
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| 74 | prm = self._getPrincipalRoleManager() |
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| 75 | |
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| 76 | old_roles = self.getRoles() |
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| 77 | for role in old_roles: |
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| 78 | # Remove old roles, not to be set now... |
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| 79 | if role.startswith('waeup.') and role not in roles: |
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| 80 | prm.unsetRoleForPrincipal(role, self.name) |
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| 81 | |
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| 82 | for role in roles: |
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| 83 | prm.assignRoleToPrincipal(role, self.name) |
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| 84 | |
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| 85 | roles = property(getRoles, setRoles) |
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| 86 | |
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| 87 | def _getPrincipalRoleManager(self): |
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| 88 | portal = grok.getSite() |
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| 89 | if portal is not None: |
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| 90 | return IPrincipalRoleManager(portal) |
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| 91 | return principalRoleManager |
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| 92 | |
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| 93 | |
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| 94 | class UserAuthenticatorPlugin(grok.GlobalUtility): |
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| 95 | grok.provides(IAuthenticatorPlugin) |
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| 96 | grok.name('users') |
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| 97 | |
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| 98 | def authenticateCredentials(self, credentials): |
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| 99 | if not isinstance(credentials, dict): |
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| 100 | return None |
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| 101 | if not ('login' in credentials and 'password' in credentials): |
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| 102 | return None |
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| 103 | account = self.getAccount(credentials['login']) |
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| 104 | |
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| 105 | if account is None: |
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| 106 | return None |
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| 107 | if not account.checkPassword(credentials['password']): |
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| 108 | return None |
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| 109 | return PrincipalInfo(id=account.name, |
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| 110 | title=account.title, |
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| 111 | description=account.description) |
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| 112 | |
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| 113 | def principalInfo(self, id): |
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| 114 | account = self.getAccount(id) |
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| 115 | if account is None: |
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| 116 | return None |
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| 117 | return PrincipalInfo(id=account.name, |
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| 118 | title=account.title, |
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| 119 | description=account.description) |
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| 120 | |
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| 121 | def getAccount(self, login): |
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| 122 | # ... look up the account object and return it ... |
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| 123 | usercontainer = self.getUserContainer() |
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| 124 | if usercontainer is None: |
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| 125 | return |
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| 126 | return usercontainer.get(login, None) |
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| 127 | |
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| 128 | def addAccount(self, account): |
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| 129 | usercontainer = self.getUserContainer() |
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| 130 | if usercontainer is None: |
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| 131 | return |
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| 132 | # XXX: complain if name already exists... |
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| 133 | usercontainer.addAccount(account) |
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| 134 | |
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| 135 | def addUser(self, name, password, title=None, description=None): |
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| 136 | usercontainer = self.getUserContainer() |
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| 137 | if usercontainer is None: |
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| 138 | return |
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| 139 | usercontainer.addUser(name, password, title, description) |
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| 140 | |
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| 141 | def getUserContainer(self): |
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| 142 | site = grok.getSite() |
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| 143 | return site['users'] |
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