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a }|�gxt � @ s d Z ddlmZ ddlmZ ddlZddlZddlZddlm Z ddlm Z ddlm Z ddlm Z z<ddl Z ddlZddlZddlZddlZddlZddlZW n ey� d ZY n0 d ZG d d � d �Ze� Zeedd �dd�Zeed�dd�Zeee d d�dd��Z eeee e dd�dd�Z dZeee e dd�dd�Z eee d �d d �Z ee d �d d �Z!eee d �d!d"�Z"d[eeeed$�d%d&�Z#d\eedd �d'd(�Z$d]eedd �d)d*�Z%eedd+�d,d-�Z&eed �d.d/�Z'eed0�d1d2�Z(ee d3�d4d5�Z)ee d3�d6d7�Z*eeed8�d9d:�Z+eee d;�d<d=�Z,eee d>�d?d@�Z-ee d3�dAdB�Z.eedd �dCdD�Z/d^e ee e e dE�dFdG�Z0ee ee eef f dH�dIdJ�Z1eedd+�dKdL�Z2eedd+�dMdN�Z3e eef edO�dPdQ�Z4eee d �dRdS�Z5e e e dT�dUdV�Z6e dW�dXdY�Z7dS )_z;Compat module to handle files security on Windows and Linux� )�absolute_import)�contextmanagerN)�Any)�Dict)� Generator)�OptionalTFc @ s e Zd ZdZdd�dd�ZdS )� _WindowsUmaskz+Store the current umask to apply on WindowsN��returnc C s d| _ d S )N� )�mask)�self� r �=/usr/lib/python3.9/site-packages/certbot/compat/filesystem.py�__init__" s z_WindowsUmask.__init__)�__name__� __module__� __qualname__�__doc__r r r r r r s r )� file_path�moder c C s t rt�| |� n t| |� dS )a[ Apply a POSIX mode on given file_path: - for Linux, the POSIX mode will be directly applied using chmod, - for Windows, the POSIX mode will be translated into a Windows DACL that make sense for Certbot context, and applied to the file using kernel calls. The definition of the Windows DACL that correspond to a POSIX mode, in the context of Certbot, is explained at https://github.com/certbot/certbot/issues/6356 and is implemented by the method `_generate_windows_flags()`. :param str file_path: Path of the file :param int mode: POSIX mode to apply N)� POSIX_MODE�os�chmod�_apply_win_mode�r r r r r r ) s r )r r c C s t rt�| �S tj}| t_|S )a$ Set the current numeric umask and return the previous umask. On Linux, the built-in umask method is used. On Windows, our Certbot-side implementation is used. :param int mask: The user file-creation mode mask to apply. :rtype: int :return: The previous umask value. )r r �umask�_WINDOWS_UMASKr )r Zprevious_umaskr r r r > s r )NNNc c s> d}z"t | �}dV W |dur:t |� n|dur8t |� 0 dS )z� Apply a umask temporarily, meant to be used in a `with` block. Uses the Certbot implementation of umask. :param int mask: The user file-creation mode mask to apply temporarily N)r )r Z old_umaskr r r � temp_umaskO s �r )�src�dstr � copy_user� copy_groupr c C sV t r:t�| �}|r|jnd}|r&|jnd}t�|||� n|rHt| |� t||� dS )a� Copy ownership (user and optionally group on Linux) from the source to the destination, then apply given mode in compatible way for Linux and Windows. This replaces the os.chown command. :param str src: Path of the source file :param str dst: Path of the destination file :param int mode: Permission mode to apply on the destination file :param bool copy_user: Copy user if `True` :param bool copy_group: Copy group if `True` on Linux (has no effect on Windows) ���N)r r �stat�st_uid�st_gid�chown�_copy_win_ownershipr )r r r r! r" �stats�user_id�group_idr r r � copy_ownership_and_apply_modei s r, )r r r! r" r c C sb t rFt�| �}|r|jnd}|r&|jnd}t�|||� t||j� n|rTt| |� t | |� dS )aU Copy ownership (user and optionally group on Linux) and mode/DACL from the source to the destination. :param str src: Path of the source file :param str dst: Path of the destination file :param bool copy_user: Copy user if `True` :param bool copy_group: Copy group if `True` on Linux (has no effect on Windows) r# N) r r r$ r% r& r' r �st_moder( �_copy_win_mode)r r r! r" r) r* r+ r r r �copy_ownership_and_mode� s r/ c C s$ t rt�t�| �j�|kS t| |�S )aa Check if the given mode matches the permissions of the given file. On Linux, will make a direct comparison, on Windows, mode will be compared against the security model. :param str file_path: Path of the file :param int mode: POSIX mode to test :rtype: bool :return: True if the POSIX mode matches the file permissions )r r$ �S_IMODEr r- �_check_win_moder r r r � check_mode� s r2 )r r c C s8 t rt�| �jt�� kS t�| tj�}|�� }t � |kS )z� Check if given file is owned by current user. :param str file_path: File path to check :rtype: bool :return: True if given file is owned by current user, False otherwise. ) r r r$ r% �getuid� win32security�GetFileSecurity�OWNER_SECURITY_INFORMATION�GetSecurityDescriptorOwner�_get_current_user)r �security�userr r r � check_owner� s r; c C s t | �ot| |�S )z� Check if given file has the given mode and is owned by current user. :param str file_path: File path to check :param int mode: POSIX mode to check :rtype: bool :return: True if file has correct mode and owner, False otherwise. )r; r2 r r r r �check_permissions� s r< � )r �flagsr r c C sN t rt�| ||�S |tj@ �r4|tj@ r.tjntj}t� � }|j }t � }t ||t j�}|�|d� |�d|d� d}z�z$t�| tjtjtj@ ||dd�}W n^ tjy� } zD| jtjkr�ttj | j ��| jtj kr�ttj | j ��| �W Y d} ~ n d} ~ 0 0 W |�r |� � n|�r|� � 0 t�| |tjA tjA �S t�| |�} t!| |� | S )aw Wrapper of original os.open function, that will ensure on Windows that given mode is correctly applied. :param str file_path: The file path to open :param int flags: Flags to apply on file while opened :param int mode: POSIX mode to apply on file when opened, Python defaults will be applied if ``None`` :returns: the file descriptor to the opened file :rtype: int :raise: OSError(errno.EEXIST) if the file already exists and os.O_CREAT & os.O_EXCL are set, OSError(errno.EACCES) on Windows if the file already exists and is a directory, and os.O_CREAT is set. r � N)"r r �open�O_CREAT�O_EXCL�win32conZ CREATE_NEWZ CREATE_ALWAYSr4 �SECURITY_ATTRIBUTES�SECURITY_DESCRIPTORr8 �_generate_daclr r �SetSecurityDescriptorOwner�SetSecurityDescriptorDacl� win32fileZ CreateFileZ GENERIC_READZFILE_SHARE_READZFILE_SHARE_WRITE� pywintypes�error�winerrorZERROR_FILE_EXISTS�OSError�errno�EEXIST�strerrorZERROR_SHARING_VIOLATIONZEACCESZCloser ) r r> r Z disposition� attributesr9 r: �daclZhandle�err�fdr r r r@ � s< � � r@ c C s� t d�}zjt |d|A B � tr4t�| |�W t |� S tj}z$tt_t�| |�W |t_W t |� S |t_0 W t |� n t |� 0 dS )a4 Rewrite of original os.makedirs function, that will ensure on Windows that given mode is correctly applied. :param str file_path: The file path to open :param int mode: POSIX mode to apply on leaf directory when created, Python defaults will be applied if ``None`` r r= N)r r r �makedirs�mkdir)r r Z current_umaskZ orig_mkdir_fnr r r rU s" � �� rU c C s� t rt�| |�S t�� }|j}t� }t||tj �}|� |d� |� d|d� zt � | |� W nJ tjy� } z0|jtjkr�ttj|j| |j��|�W Y d}~n d}~0 0 dS )a, Rewrite of original os.mkdir function, that will ensure on Windows that given mode is correctly applied. :param str file_path: The file path to open :param int mode: POSIX mode to apply on directory when created, Python defaults will be applied if ``None`` Fr? r N)r r rV r4 rD rE r8 rF r r rG rH rI ZCreateDirectoryrJ rK rL ZERROR_ALREADY_EXISTSrM rN rO rP )r r rQ r9 r: rR rS r r r rV 8 s rV )r r r c C s, t td�r ttd�| |� n t�| |� dS )z� Rename a file to a destination path and handles situations where the destination exists. :param str src: The current file path. :param str dst: The new file path. �replaceN)�hasattrr �getattr�rename)r r r r r rW W s rW c C s. | }t j�| �}t j�|�r*td�|���|S )a Find the real path for the given path. This method resolves symlinks, including recursive symlinks, and is protected against symlinks that creates an infinite loop. :param str file_path: The path to resolve :returns: The real path for the given path :rtype: str zError, link {0} is a loop!)r �path�realpath�islink� RuntimeError�format)r Z original_pathr[ r r r r\ h s r\ )� link_pathr c C s6 t �| �}tr|S t|�dk r*|dd� S td��dS )a Return a string representing the path to which the symbolic link points. :param str link_path: The symlink path to resolve :return: The path the symlink points to :returns: str :raise: ValueError if a long path (260> characters) is encountered on Windows i � Nz3Long paths are not supported by Certbot on Windows.)r �readlinkr �len� ValueError)r` r[ r r r rb } s rb )r[ r c C s& t r tj�| �o t�| tj�S t| �S )z� Is path an executable file? :param str path: path to test :return: True if path is an executable file :rtype: bool )r r r[ �isfile�access�X_OK�_win_is_executable)r[ r r r � is_executable� s ri c C sV t r tt�t�| �j�tj@ �S t�| tj �}|� � }t|� tj tj t�d�d���S )z� Check if everybody/world has any right (read/write/execute) on a file given its path. :param str path: path to test :return: True if everybody/world has any right to the file :rtype: bool �S-1-1-0�Z TrusteeFormZ TrusteeTypeZ Identifier)r �boolr$ r0 r r- �S_IRWXOr4 r5 �DACL_SECURITY_INFORMATION�GetSecurityDescriptorDacl�GetEffectiveRightsFromAcl�TRUSTEE_IS_SID�TRUSTEE_IS_USER�ConvertStringSidToSid)r[ r9 rR r r r �has_world_permissions� s �rt )�old_key� base_moder c C s: t r6t�t�| �j�tjtjB tjB tjB @ }||B S |S )a Calculate the POSIX mode to apply to a private key given the previous private key. :param str old_key: path to the previous private key :param int base_mode: the minimum modes to apply to a private key :return: the POSIX mode to apply :rtype: int ) r r$ r0 r r- �S_IRGRP�S_IWGRP�S_IXGRP�S_IROTH)ru rv Zold_moder r r �compute_private_key_mode� s �r{ )�path1�path2r c C sd t r0t�| �}t�|�}|j|jf|j|jfkS t�| tj�}|�� }t�|tj�}|�� }||kS )as Return True if the ownership of two files given their respective path is the same. On Windows, ownership is checked against owner only, since files do not have a group owner. :param str path1: path to the first file :param str path2: path to the second file :return: True if both files have the same ownership, False otherwise :rtype: bool ) r r r$ r% r& r4 r5 r6 r7 )r| r} Zstats1Zstats2Z security1Zuser1Z security2Zuser2r r r �has_same_ownership� s r~ )r[ �min_moder c C s� t r t�| �j}|||B kS t| �} t�| tjtjB �}|� � }|� � }t ||�}t |� � �D ]F}|�|�}|d } |d }|�tjtj|d��} | | | B kr^ dS q^dS )a� Check if a file given its path has at least the permissions defined by the given minimal mode. On Windows, group permissions are ignored since files do not have a group owner. :param str path: path to the file to check :param int min_mode: the minimal permissions expected :return: True if the file matches the minimal permissions expectations, False otherwise :rtype: bool r? � rk FT)r r r$ r- r\ r4 r5 r6 rn r7 ro rF �range� GetAceCount�GetAcerp rq rr ) r[ r r- r9 r: rR Zmin_dacl�indexZmin_acer Zeffective_maskr r r �has_min_permissions� s, � � r� c C sN t j�| �sdS t�| tj�}|�� }|�tjtj t � d��}|t j @ t j kS )NFrk ) r r[ re r4 r5 rn ro rp rq rr r8 � ntsecuritycon�FILE_GENERIC_EXECUTE)r[ r9 rR r r r r rh s �rh c C sJ t | �} t�| tj�}|�� }t||�}|�d|d� t�| tj|� dS )z� This function converts the given POSIX mode into a Windows ACL list, and applies it to the file given its path. If the given path is a symbolic link, it will resolved to apply the mode on the targeted file. r? r N) r\ r4 r5 r6 r7 rF rH �SetFileSecurityrn )r r r9 r: rR r r r r - s r )�user_sidr r r c C s� |r|d| @ }t |�}t�d�}t�d�}t�d�}t�� }| ||fvrjt|d �}|rj|�tj|| � t|d �} | r�|�tj| |� tdddd��} |�tj| |� |�tj| |� |S ) Nr= zS-1-5-18z S-1-5-32-544rj r: �allT��read�write�execute)� _analyze_moder4 rs ZACL�_generate_windows_flagsZAddAccessAllowedAceZ ACL_REVISION) r� r r Zanalysis�systemZadminsZeveryonerR Z user_flagsZeverybody_flagsZfull_permissionsr r r rF @ s$ rF )r r c C s> | t j@ | t j@ | t j@ d�| t j@ | t j@ | t j@ d�d�S )Nr� )r: r� )r$ �S_IRUSR�S_IWUSR�S_IXUSRrz �S_IWOTH�S_IXOTH)r r r r r� d s ���r� c C sL t | �} t�| tj�}|�� }t�|tj�}|�|d� t�|tj|� d S �NF)r\ r4 r5 r6 r7 rG r� )r r � security_srcZuser_src� security_dstr r r r( s s r( c C sN t | �} t�| tj�}|�� }t�|tj�}|�d|d� t�|tj|� d S )Nr? r )r\ r4 r5 rn ro rH r� )r r r� rR r� r r r r. � s r. )� rights_descr c C sJ d}| d r|t jB }| d r4|t jt jA t jA B }| d rF|t jB }|S )Nr r� r� r� )r� ZFILE_GENERIC_READZFILE_ALL_ACCESSr� )r� �flagr r r r� � s �� r� c C sH t | �} t�| tjtjB �}|�� }|�� }|s4dS t||�}t||�S r� ) r\ r4 r5 r6 rn ro r7 rF �_compare_dacls)r r r9 rR r: Zref_daclr r r r1 � s � r1 )�dacl1�dacl2r c s4 � fdd�t � �� �D ��fdd�t ��� �D �kS )z� This method compare the two given DACLs to check if they are identical. Identical means here that they contains the same set of ACEs in the same order. c s g | ]}� � |��qS r �r� ��.0r� )r� r r � <listcomp>� � z"_compare_dacls.<locals>.<listcomp>c s g | ]}� � |��qS r r� r� )r� r r r� � r� )r� r� �r� r� r r� r r� � s �r� r c C s$ d� t�� t�� �} t�d| �d S )z= Return the pySID corresponding to the current user. z{0}\{1}Nr )r_ �win32apiZ GetDomainNameZ GetUserNamer4 ZLookupAccountName)Z account_namer r r r8 � s r8 )TT)r= )r= )r= )N)8r Z __future__r � contextlibr rN r r$ �typingr r r r r� rJ r� rC rI r4 rL � ImportErrorr r r �str�intr r r rl r, r/ r2 r; r< r@ rU rV rW r\ rb ri rt r{ r~ r� rh r rF r� r( r. r� r1 r� r8 r r r r �<module> sr � " �� E "-$
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