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d� de!�Z"G dd� de#�Z$G dd� de%�Z&G dd� de%�Z'G dd� de%�Z(G dd� de%�Z)G dd� de*�Z+G dd � d e*�Z,G d d � d e*�Z-G d d � d e*�Z.G d!d"� d"e/�Z0G d#d$� d$e*�Z1dS )%� N)�groupby)�AdminCommandError�IAdminCommandProvider� get_dir_list)�cached)�ExtensionOption�OrderedExtensionsOption)�*)�Resource�get_resource_name)� file_or_std�lazy)�time_now)�path_to_unicode� print_table�printout�stream_encoding�
to_unicode�wrap)�_�N_)�IPermissionRequestor�IPermissionStore�IPermissionPolicy�IPermissionGroupProvider�PermissionError�PermissionSystemc s6 e Zd ZdZed�Zd� fdd� Zedd� �Z� Z S ) r z2Insufficient permissions to perform the operation.� ForbiddenNc sr || _ || _|| _| j r)| jr!| jjr!td| j t| j| j�d�}ntd| j d�}n|d u r1td�}t� �|� d S )Nzt%(perm)s privileges are required to perform this operation on %(resource)s. You don't have the required permissions.)�perm�resourcezd%(perm)s privileges are required to perform this operation. You don't have the required permissions.)r z2Insufficient privileges to perform this operation.)�actionr �env�idr r �super�__init__)�selfr r r! �msg�� __class__� �+/usr/lib/python3/dist-packages/trac/perm.pyr$ + s ��zPermissionError.__init__c C s
| j d S �Nr )�args�r% r) r) r* �message> s
zPermissionError.message�NNNN)
�__name__�
__module__� __qualname__�__doc__r �titler$ �propertyr. �
__classcell__r) r) r' r* r & s r c @ s e Zd ZdZdS )�PermissionExistsErrorz0Thrown when a unique key constraint is violated.N)r0 r1 r2 r3 r) r) r) r* r7 C s r7 c @ � e Zd ZdZdd� ZdS )r z=Extension point interface for components that define actions.c C � dS )ak Return a list of actions defined by this component.
The items in the list may either be simple strings, or
`(string, sequence)` tuples. The latter are considered to be "meta
permissions" that group several simple actions under one name for
convenience, adding to it if another component already defined that
name.
Nr) r) r) r) r* �get_permission_actionsJ � z+IPermissionRequestor.get_permission_actionsN)r0 r1 r2 r3 r: r) r) r) r* r G � r c @ s8 e Zd ZdZdd� Zdd� Zdd� Zdd � Zd
d � Zd S )
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management of permissions.
c C r9 )z=Return a list of permissions for the specified user.
Nr) ��usernamer) r) r* �get_user_permissionsZ r; z%IPermissionStore.get_user_permissionsc C r9 )zSReturn a list of users that have any of the specified
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Nr) )� permissionsr) r) r* �get_users_with_permissions^ r; z+IPermissionStore.get_users_with_permissionsc C r9 )��Return all permissions for all users.
The permissions are returned as a list of (subject, action)
formatted tuples.
Nr) r) r) r) r* �get_all_permissionsc r; z$IPermissionStore.get_all_permissionsc C r9 )z-Grant a user permission to perform an action.Nr) �r> r r) r) r* �grant_permissionj r; z!IPermissionStore.grant_permissionc C r9 )z>Revokes the permission of the given user to perform an action.Nr) rD r) r) r* �revoke_permissionm r; z"IPermissionStore.revoke_permissionN) r0 r1 r2 r3 r? rA rC rE rF r) r) r) r* r U s r c @ r8 )r z]Extension point interface for components that provide information
about user groups.
c C r9 )�kReturn a list of names of the groups that the user with the
specified name is a member of.
Nr) r= r) r) r* �get_permission_groupsv r; z.IPermissionGroupProvider.get_permission_groupsN)r0 r1 r2 r3 rH r) r) r) r* r q s r c @ r8 )r zCA security policy provider used for fine grained permission checks.c C r9 )a Check that the action can be performed by username on the resource
:param action: the name of the permission
:param username: the username string or 'anonymous' if there's no
authenticated user
:param resource: the resource on which the check applies.
Will be `None`, if the check is a global one and
not made on a resource in particular
:param perm: the permission cache for that username and resource,
which can be used for doing secondary checks on other
permissions. Care must be taken to avoid recursion.
:return: `True` if action is allowed, `False` if action is denied,
or `None` if indifferent. If `None` is returned, the next
policy in the chain will be consulted.
Note that when checking a permission on a realm resource (i.e. when
`.id` is `None`), this usually corresponds to some preliminary check
done before making a fine-grained check on some resource.
Therefore the `IPermissionPolicy` should be conservative and return:
* `True` if the action *can* be allowed for some resources in
that realm. Later, for specific resource, the policy will be able
to return `True` (allow), `False` (deny) or `None` (don't decide).
* `None` if the action *can not* be performed for *some* resources.
This corresponds to situation where the policy is only interested
in returning `False` or `None` on specific resources.
* `False` if the action *can not* be performed for *any* resource
in that realm (that's a very strong decision as that will usually
prevent any fine-grained check to even happen).
Note that performing permission checks on realm resources may seem
redundant for now as the action name itself contains the realm, but
this will probably change in the future (e.g. `'VIEW' in ...`).
Nr) )r r> r r r) r) r* �check_permission r; z"IPermissionPolicy.check_permissionN)r0 r1 r2 r3 rI r) r) r) r* r | r< r c @ sf e Zd ZdZeee� ee�Zdd� Z dd� Z
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� Zedd� �Zdd� ZdS )�DefaultPermissionStorez�Default implementation of permission storage and group management.
This component uses the `permission` table in the database to store both
permissions and groups.
c C s t | �|h�d �S )rG � )�sorted�_get_actions_and_groups)r% r> r) r) r* rH � s z,DefaultPermissionStore.get_permission_groupsc C s@ |h}| j D ]}|| ur|�|�|�pg � qt| �|�d �S )aq Retrieve a list of permissions for the given user.
The permissions are stored in the database as (username, action)
records. There's simple support for groups by using lowercase
names for the action column: such a record represents a group and
not an actual permission, and declares that the user is part of
that group.
r )�group_providers�updaterH rL rM )r% r> �subjects�providerr) r) r* r? � s
�z+DefaultPermissionStore.get_user_permissionsc C sR t � }dd� | j�� D �}|D ]}| �|�}|D ] }||v r#|�|� qqt|�S )z�Retrieve a list of users that have any of the specified
permissions
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c S s h | ]}|d �qS )r r) )�.0�ur) r) r* � <setcomp>� � zDDefaultPermissionStore.get_users_with_permissions.<locals>.<setcomp>)�setr! �get_known_usersr? �addrL )r% r@ �result�users�user�
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��z1DefaultPermissionStore.get_users_with_permissionsc C s | j S �rB )�_all_permissionsr- r) r) r* rC � s z*DefaultPermissionStore.get_all_permissionsc C �* | j �d||f� | j�d||� | `dS )z=Grants a user the permission to perform the specified action.z&INSERT INTO permission VALUES (%s, %s)z Granted permission for %s to %sN�r! �db_transaction�log�infor_ �r% r> r r) r) r* rE � s
�z'DefaultPermissionStore.grant_permissionc C r` )z<Revokes a users' permission to perform the specified action.z6DELETE FROM permission WHERE username=%s AND action=%sz Revoked permission for %s to %sNra re r) r) r* rF � s �z(DefaultPermissionStore.revoke_permissionc C s t | j�d��S )Nz]
SELECT username, action FROM permission
)rL r! �db_queryr- r) r) r* r_ � s z'DefaultPermissionStore._all_permissionsc C s� t � }t � }| j} t|�}t|�}|D ] \}}||v r3|�� r%|�|� |�� s3|�|� |�|� q|t|�krE|t|�krE ||fS q
)zxGet actions and groups for `subjects`, an iterable of username
and groups that username is a member of.
)rV r_ �len�isupperrX ) r% rP �actions�groups�perms� num_users� num_actionsr[ r r) r) r* rM � s$
��z.DefaultPermissionStore._get_actions_and_groupsN)r0 r1 r2 r3 �
implementsr r �ExtensionPointrN rH r? rA rC rE rF r r_ rM r) r) r) r* rJ � s
rJ c @ s$ e Zd ZdZdZee� dd� ZdS )� DefaultPermissionGroupProviderzqPermission group provider providing the basic builtin permission
groups 'anonymous' and 'authenticated'.
Tc C s dg}|r|dkr|� d� |S )N� anonymous�
authenticated)�append)r% r> rj r) r) r* rH s
z4DefaultPermissionGroupProvider.get_permission_groupsN)r0 r1 r2 r3 �requiredrn r rH r) r) r) r* rp s
rp c @ s0 e Zd ZdZee� dZdZdd� Zdd� Z dS ) �DefaultPermissionPolicyz<Default permission policy using the IPermissionStore system.� �< c C � i | _ t� | _d S �N��permission_cacher � last_reapr- r) r) r* r$ + � z DefaultPermissionPolicy.__init__c C sn t � }|| j | jkri | _t � | _| j�|d�\}}|| | jkr1t| j��|�}||f| j|< ||v p6d S )N�r N) r r| �CACHE_REAP_TIMEr{ �get� CACHE_EXPIRYr r! r? )r% r r> r r �now� timestampr@ r) r) r* rI 1 s �� z(DefaultPermissionPolicy.check_permissionN)
r0 r1 r2 r3 rn r r� r r$ rI r) r) r) r* ru ! s ru c @ s� e Zd ZdZdZee� ee�Zee �Z
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d� Zdd� Zdd� Zd,dd�Zedd� �Zd,dd�Zdd� Zd d � Z d-d d �Z d d!� Z d"d#� Z d$d%� Z d&d'� Z d.d(d)�Z!d*d+� Z"dS )/r z!Permission management sub-system.T�trac�permission_storerJ zuName of the component implementing `IPermissionStore`, which is
used for managing user and group permissions.�permission_policieszWDefaultWikiPolicy, DefaultTicketPolicy, DefaultPermissionPolicy, LegacyAttachmentPolicyFz�List of components implementing `IPermissionPolicy`, in the order
in which they will be applied. These components manage fine-grained
access control to Trac resources.rv rw c C rx ry rz r- r) r) r* r$ b r} zPermissionSystem.__init__c C s� |� � r|| �� vrttd|d���|� � s&|�� | �� v r&ttd|d���z
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td||d���w ) a< Grant the user with the given name permission to perform to
specified action.
:raises PermissionExistsError: if user already has the permission
or is a member of the group.
:since 1.3.1: raises PermissionExistsError rather than IntegrityError
� %(name)s is not a valid action.��namezWPermission %(name)s differs from a defined action by casing only, which is not allowed.z4The user %(user)s already has permission %(action)s.)r[ r z4The user %(user)s is already in the group %(group)s.)r[ r] N) rh � get_actions� TracErrorr �upper�storerE r! �db_exc�IntegrityErrorr7 re r) r) r* rE h s* � �����z!PermissionSystem.grant_permissionc C s | j �||� dS )zJRevokes the permission of the specified user to perform an
action.N)r� rF re r) r) r* rF � s z"PermissionSystem.revoke_permissionNc C sb i }| j D ])}||u r q|�� pg D ]}t|t�r'|�|d g ��|d � q|�|g � qq|S )aU Get all actions from permission requestors as a `dict`.
The keys are the action names. The values are the additional actions
granted by each action. For simple actions, this is an empty list.
For meta actions, this is the list of actions covered by the action.
:since 1.0.17: added `skip` argument.
r rK )�
requestorsr: �
isinstance�tuple�
setdefault�extend�r% �skipri � requestorr r) r) r* �get_actions_dict� s
�z!PermissionSystem.get_actions_dictc C s | � � S ry �r� r- r) r) r* ri � s zPermissionSystem.actionsc C sZ t � }| jD ]"}||u r
q|�� pg D ]}t|t�r"|�|d � q|�|� qqt|�S )z;Get a list of all actions defined by permission requestors.r )rV r� r: r� r� rX rL r� r) r) r* r� � s
�z PermissionSystem.get_actionsc C �8 t dd� | �� D �dd� d�}dd� t|dd� d�D �S ) z�Get all groups as a `dict`.
The keys are the group names. The values are the group members.
:since: 1.1.3
c s s � | ] }|d � � s|V qdS �rK N�rh �rR �pr) r) r* � <genexpr>� � �
�z3PermissionSystem.get_groups_dict.<locals>.<genexpr>c S � | d S �NrK r) �r� r) r) r* �<lambda>� � z2PermissionSystem.get_groups_dict.<locals>.<lambda>��keyc S �( i | ]\}}|t d d� t|�D ���qS )c s � � | ]}|d V qdS r~ r) �rR �ir) r) r* r� � � � z>PermissionSystem.get_groups_dict.<locals>.<dictcomp>.<genexpr>�rL �list�rR �k�gr) r) r* �
<dictcomp>� � �z4PermissionSystem.get_groups_dict.<locals>.<dictcomp>c S r� r� r) r� r) r) r* r� � r� �rL rC r )r% rj r) r) r* �get_groups_dict� s ��z PermissionSystem.get_groups_dictc C r� ) z�Get all users as a `dict`.
The keys are the user names. The values are the actions possessed
by the user.
:since: 1.1.3
c s s � | ] }|d � � r|V qdS r� r� r� r) r) r* r� � r� z2PermissionSystem.get_users_dict.<locals>.<genexpr>c S r� r+ r) r� r) r) r* r� � r� z1PermissionSystem.get_users_dict.<locals>.<lambda>r� c S r� )c s r� r� r) r� r) r) r* r� � r� z=PermissionSystem.get_users_dict.<locals>.<dictcomp>.<genexpr>r� r� r) r) r* r� � r� z3PermissionSystem.get_users_dict.<locals>.<dictcomp>c S r� r+ r) r� r) r) r* r� � r� r� )r% rk r) r) r* �get_users_dict� s ��z PermissionSystem.get_users_dictc s^ |s
t �| �� d�S | �� � | j�|�pg }|r%� �fdd�| �|�D �S � �fdd�|D �S )a� Return the permissions of the specified user.
The return value is a dictionary containing all the actions
granted to the user mapped to `True`.
:param undefined: if `True`, include actions that are not defined
in any of the `IPermissionRequestor` implementations.
:param expand_meta: if `True`, expand meta permissions.
:since 1.3.1: added the `undefined` parameter.
:since 1.3.3: added the `expand_meta` parameter.
Tc � i | ] }�s
|� v r|d �qS �Tr) r� �ri � undefinedr) r* r� � � ��z9PermissionSystem.get_user_permissions.<locals>.<dictcomp>c r� r� r) r� r� r) r* r� � r� )�dict�fromkeysr� r� r� r? �expand_actions)r% r> r� � expand_meta�user_permissionsr) r� r* r? � s z%PermissionSystem.get_user_permissionsc C s. t � }| jD ] }|�|�|�pg � qt|�S )a Return a sorted list of groups that `username` belongs to.
Groups are recursively expanded such that if `username` is a
member of `group1` and `group1` is a member of `group2`, both
`group1` and `group2` will be returned.
:since: 1.3.3
)rV rN rO rH rL )r% r> � user_groupsrQ r) r) r* rH � s
z&PermissionSystem.get_permission_groupsc C s | j �� pg S r^ )r� rC r- r) r) r* rC � s z$PermissionSystem.get_all_permissionsc s� t � }|| j | jkri | _|| _| j�|d�\}}|| | jkr#|S i �| �� �� D ]\}}|D ] }��|t � ��
|� q1q+t � �� ��fdd�� � |� | j � ��pUg }||f| j|< |S )zrReturn all users that have the specified permission.
Users are returned as a list of user names.
r~ c s4 | �vr�� | � ��| d�D ]} � | � qd S d S �Nr) �rX r� )r ��append_with_parents�
parent_map�satisfying_permsr) r* r� �
�zGPermissionSystem.get_users_with_permission.<locals>.append_with_parents)
r r| r r{ r� r� r� �itemsr� rV rX r� rA ) r% �
permissionr� r� r@ �parent�children�childrk r) r� r* �get_users_with_permission� s( ��z*PermissionSystem.get_users_with_permissionc s8 | � � � t� �� ��fdd��|D ]}�|� qt��S )z-Helper method for expanding all meta actions.c s4 | �vr�� | � � �| d�D ]}�|� qd S d S r� r� )r �a�� all_actions�
expand_action�expanded_actionsr) r* r� r� z6PermissionSystem.expand_actions.<locals>.expand_action)r� rV rL )r% ri r� r) r� r* r� s
z PermissionSystem.expand_actionsc C s� |du rd}|r|j du rd}| jD ]#}|�||||�}|dur5| j�d|jj|r+dnd|||� | S q| j�d|||� dS )z_Return True if permission to perform action for the given
resource is allowed.
Nrq z %s %s %s performing %s on %r�allows�deniesz(No policy allowed %s performing %s on %rF)�realm�policiesrI rc �debugr( r0 )r% r r> r r �policy�decisionr) r) r* rI ( s(
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���z!PermissionSystem.check_permissionc C s | j | d�}d|fgS )z;Implement the global `TRAC_ADMIN` meta permission.
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z'PermissionSystem.get_permission_actionsry )NFT)NNN)#r0 r1 r2 r3 rt rn r ro r� r rN r r r� r r r� r� r r$ rE rF r� r
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ddd�Z e Z dS )�PermissionCacheaa Cache that maintains the permissions of a single user.
Permissions are usually checked using the following syntax:
'WIKI_MODIFY' in perm
One can also apply more fine grained permission checks and
specify a specific resource for which the permission should be available:
'WIKI_MODIFY' in perm('wiki', 'WikiStart')
If there's already a `page` object available, the check is simply:
'WIKI_MODIFY' in perm(page.resource)
If instead of a check, one wants to assert that a given permission is
available, the following form should be used:
perm.require('WIKI_MODIFY')
or
perm('wiki', 'WikiStart').require('WIKI_MODIFY')
or
perm(page.resource).require('WIKI_MODIFY')
When using `require`, a `PermissionError` exception is raised if the
permission is missing.
�r! r> � _resource�_cacheNc C s, || _ |pd| _|| _|d u ri }|| _d S )Nrq r� )r% r! r> r �cacherj r) r) r* r$ j s
zPermissionCache.__init__c C s |rt |||�S | jS ry )r
r� )r% �realm_or_resourcer" �versionr) r) r* �_normalize_resources s z#PermissionCache._normalize_resourceFc C s@ |rt |||�nd}|r| jr|| jkr| S t| j| j|| j�S )z�Convenience function for using thus:
'WIKI_VIEW' in perm(context)
or
'WIKI_VIEW' in perm(realm, id, version)
or
'WIKI_VIEW' in perm(resource)
N)r
r� r� r! r> r� )r% r� r" r� r r) r) r* �__call__y s
�� �zPermissionCache.__call__c C s | � |||�}| �||�S ry )r� �_has_permission)r% r r� r" r� r r) r) r* �has_permission� s z PermissionCache.has_permissionc C s� | j t|�|f}| j�|�}|r|\}}||kr|S d|f| j|< | }|| jur2t| j| j || j�}t| j��||j ||�}||f| j|< |S )NF) r> �hashr� r� r� r� r! r rI ) r% r r r� r �cache_decision�cache_resourcer r� r) r) r* r� � s"
��z PermissionCache._has_permissionc C s> | � |||�}| �||�s |d u rt||| j��t|d��d S )N)r& )r� r� r r! )r% r r� r" r� r. r r) r) r* �require� s
�zPermissionCache.requirer/ )FF)NFF)NFFN)
r0 r1 r2 r3 � __slots__r$ r� r� r� r� � __contains__r� �assert_permissionr) r) r) r* r� G s"
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dd� Zdd� Zddd�Zddd�ZdS ) �PermissionAdminzAtrac-admin command provider for permission system administration.c c sj � ddd| j | jfV ddd| j| jfV ddd| j| jfV d d
d | j| jfV d d
d
| j| jfV d S )Nzpermission listz[user]zList permission ruleszpermission addz <user> <action> [action] [...]zAdd a new permission rulezpermission removezRemove a permission rulezpermission exportz[file]z2Export permission rules to a file or stdout as CSVzpermission importz3Import permission rules from a file or stdin as CSV) �_complete_list�_do_list�
_complete_add�_do_add�_complete_remove�
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_do_importr- r) r) r* �get_admin_commands� s* �����
�z"PermissionAdmin.get_admin_commandsc C s dd� t | j��� D �S )Nc S s h | ]\}}|�qS r) r) )rR r[ r r) r) r* rT � rU z0PermissionAdmin.get_user_list.<locals>.<setcomp>�r r! rC r- r) r) r* �
get_user_list� s �z PermissionAdmin.get_user_listc s � fdd�t | j��� D �S )Nc s g | ]
\}}|� kr|�qS r) r) )rR �subjectr �r[ r) r* �
<listcomp>� s �z2PermissionAdmin.get_user_perms.<locals>.<listcomp>r� )r% r[ r) r� r* �get_user_perms� s
�z PermissionAdmin.get_user_permsc C s t |�dkr
| �� S d S r� )rg r� �r% r, r) r) r* r� � s �z PermissionAdmin._complete_listc C sX t |�dkr
| �� S t |�dkr*tt| j��� �t| �|d �� t|dd� � S d S �NrK � r ���)rg r� rV r r! r� r� r� r) r) r* r� � s ���z PermissionAdmin._complete_addc C sF t |�dkr
| �� S t |�dkr!t| �|d ��t|dd� � S d S r )rg r� rV r� r� r) r) r* r� � s
"�z PermissionAdmin._complete_removec C s t |�dkr t|d �S d S )NrK r )rg r r� r) r) r* r� � s �z'PermissionAdmin._complete_import_exportNc C s� t | j�}|r!g }|j|dd�}|D ]
}|| r |�||f� qn|�� }|�� t|td�td�g� t� t td�� |�
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NT)r� �User�ActionzAvailable actions:z, � �
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