o k`(@sddlZddlZddlmZddlmZddlmZmZm Z ddl m Z m Z ddl mZmZddlmZddlmZGd d d e ZdS) N) fnmatchcase)groupby)ConfigurationError PathOptionUnicodeConfigParser) Component implements)IPermissionPolicyPermissionSystem)to_list)exception_to_unicodec@sNeZdZdZeeeddddZddZdd Z d d Z d d Z ddZ dS) AuthzPolicya Permission policy using an authz-like configuration file. Refer to SVN documentation for syntax of the authz file. Groups are supported. As the fine-grained permissions brought by this permission policy are often used in complement of the other permission policies (like the `DefaultPermissionPolicy`), there's no need to redefine all the permissions here. Only additional rights or restrictions should be added. === Installation === Enabling this policy requires listing it in `trac.ini`:: {{{ [trac] permission_policies = AuthzPolicy, DefaultPermissionPolicy [authz_policy] authz_file = conf/authzpolicy.conf }}} This means that the `AuthzPolicy` permissions will be checked first, and only if no rule is found will the `DefaultPermissionPolicy` be used. === Configuration === The `authzpolicy.conf` file is a `.ini` style configuration file. - Each section of the config is a glob pattern used to match against a Trac resource descriptor. These descriptors are in the form:: {{{ :@[/:@ ...] }}} Resources are ordered left to right, from parent to child. If any component is inapplicable, `*` is substituted. If the version pattern is not specified explicitely, all versions (`@*`) is added implicitly Example: Match the WikiStart page:: {{{ [wiki:*] [wiki:WikiStart*] [wiki:WikiStart@*] [wiki:WikiStart] }}} Example: Match the attachment ``wiki:WikiStart@117/attachment/FOO.JPG@*`` on WikiStart:: {{{ [wiki:*] [wiki:WikiStart*] [wiki:WikiStart@*] [wiki:WikiStart@*/attachment/*] [wiki:WikiStart@117/attachment/FOO.JPG] }}} - Sections are checked against the current Trac resource '''IN ORDER''' of appearance in the configuration file. '''ORDER IS CRITICAL'''. - Once a section matches, the current username is matched, '''IN ORDER''', against the keys of the section. If a key is prefixed with a `@`, it is treated as a group. If a key is prefixed with a `!`, the permission is denied rather than granted. The username will match any of 'anonymous', 'authenticated', or '*', using normal Trac permission rules. Example configuration:: {{{ [groups] administrators = athomas [*/attachment:*] * = WIKI_VIEW, TICKET_VIEW [wiki:WikiStart@*] @administrators = WIKI_ADMIN anonymous = WIKI_VIEW * = WIKI_VIEW # Deny access to page templates [wiki:PageTemplates/*] * = # Match everything else [*] @administrators = TRAC_ADMIN anonymous = BROWSER_VIEW, CHANGESET_VIEW, FILE_VIEW, LOG_VIEW, MILESTONE_VIEW, POLL_VIEW, REPORT_SQL_VIEW, REPORT_VIEW, ROADMAP_VIEW, SEARCH_VIEW, TICKET_CREATE, TICKET_MODIFY, TICKET_VIEW, TIMELINE_VIEW, WIKI_CREATE, WIKI_MODIFY, WIKI_VIEW # Give authenticated users some extra permissions authenticated = REPO_SEARCH, XML_RPC }}} authz_policy authz_filezqLocation of authz policy configuration file. Non-absolute paths are relative to the Environment `conf` directory.cCsd|_d|_i|_dS)N)authz authz_mtimegroups_by_user)selfr;/usr/lib/python3/dist-packages/tracopt/perm/authz_policy.py__init__s zAuthzPolicy.__init__c Cs|jr tj|j|jkr|||}|jd||| ||}|dur*dS|gkr0dSt |j }t |dddD]\}} |rR|| dd| DvrRdS|| | vr\dSq=dS) NzChecking %s on %sFcSs |dS)N!) startswith)prrrs z.AuthzPolicy.check_permission..)keycss|] }|ddVqdS)Nr).0rrrr sz/AuthzPolicy.check_permission..T)rospathgetmtimer parse_authznormalise_resourcelogdebugauthz_permissionsr envrexpand_actions) ractionusernameresourceperm resource_key permissionspsdenypermsrrrcheck_permissions(   zAuthzPolicy.check_permissionc sjdjjsjdtz tjj}Wnty5}z jdt |td}~wwt dd_ z j jWnt jy^}z jdt |td}~wwij drxj dD] \}}t||<qmi_fddD] \}}d ||qttj}tjj}j D]1}|dkrqj |D]#\}} t| D]} | d r| d d} | |vr׈jd | ||qqq|_dS) Nz Parsing authz security policy %szYThe `[authz_policy] authz_file` configuration option in trac.ini is empty or not defined.z.Error parsing authz permission policy file: %sF)ignorecase_optiongroupscsF|D]}|dr||ddqj|t|qdS)N@r)rr setdefaultsetadd)groupitemsitem add_itemsr5rrrr>s  z*AuthzPolicy.parse_authz..add_itemsr6rrz>The action %s in the [%s] section of %s is not a valid action.)r%r&rerrorrr r!r"OSErrorr rrread configparser ParsingError has_sectionr;r rr8r r( get_actionsbasenamesectionsrwarningr) rrer:users all_actionsauthz_basenamesectionuseractionsr*rr=rr#sd       zAuthzPolicy.parse_authzcs$ddfddd|S)NcSs,|j}d|jpd|dur|nd|jpdfS)Nz%s:%s@%s*)idrealmversion)r,rQrrr to_descriptors  z5AuthzPolicy.normalise_resource..to_descriptorcsl|sdgS|}|js|jdur|gS|j}|r*|j|jkr*|j}|r*|j|jks|r3||gS|gS)Nz*:*@*)rRrQparent)r, descriptorrUflattenrTrrrXsz/AuthzPolicy.normalise_resource..flatten/)join)rr,rrWrr$szAuthzPolicy.normalise_resourcecCs|r |dkr ddd|g}nddg}dd|jDD]H}|}d|vr'|d7}t||rc|j|D]0\}}t|}||vsG||j|gvrb|jd|||t |t r\|gS|Sq2qdS) N anonymousrP authenticatedcSsg|]}|dkr|qS)r5r)rarrr sz1AuthzPolicy.authz_permissions..r6z@*z!%s matched section %s for user %s) rrGrr;r rgetr%r& isinstancestr)rr.r+ valid_usersresource_section resource_globwhor/rrrr's*    zAuthzPolicy.authz_permissionsN) __name__ __module__ __qualname____doc__rr rrrr3r#r$r'rrrrr sc6 r )rBr fnmatchr itertoolsr trac.configrrr trac.corerr trac.permr r trac.utilr trac.util.textr r rrrrs