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ActionBasez�
This class is the base class for all action plugins, and defines
code common to all actions. The base class handles the connection
by putting/getting files and executing commands based on the current
action in use.
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� �}|� | j�}|r�td| j j d�
t|��f ��| jjjdu r�| �� r�| �� |S ) a� Action Plugins should implement this method to perform their
tasks. Everything else in this base class is a helper method for the
action plugin to do that.
:kwarg tmp: Deprecated parameter. This is no longer used. An action plugin that calls
another one and wants to use the same remote tmp for both should set
self._connection._shell.tmpdir rather than this parameter.
:kwarg task_vars: The variables (host vars, group vars, config vars,
etc) associated with this task.
:returns: dictionary of results from the module
Implementors of action modules may find the following variables especially useful:
* Module parameters. These are stored in self._task.args
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| ��| |fS )aZ Validate an argument spec against the task args
This will return a tuple of (ValidationResult, dict) where the dict
is the validated, coerced, and normalized task args.
Be cautious when directly passing ``new_module_args`` directly to a
module invocation, as it will contain the defaults, and not only
the args supplied from the task. If you do this, the module
should not define ``mututally_exclusive`` or similar.
This code is roughly copied from the ``validate_argument_spec``
action plugin for use by other action plugins.
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z!ActionBase.validate_argument_specFc C s |s | j js | �| jjj� dS )a? Method to perform a clean up at the end of an action plugin execution
By default this is designed to clean up the shell tmpdir, and is toggled based on whether
async is in use
Action plugins may override this if they deem necessary, but should still call this method
via super
N)r# r: �_remove_tmp_pathr$ rD rE )r3 �forcer5 r5 r6 �cleanup� s zActionBase.cleanupc C s, z |� |�W S ttfy& | Y S 0 dS )z}Helper to get an option from a plugin without having to use
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get_option�AttributeError�KeyError)r3 Zplugin�option�defaultr5 r5 r6 �get_plugin_option� s z ActionBase.get_plugin_optionc C s | j | jj||d�S �N�r` )ra r$ �become�r3 r_ r` r5 r5 r6 �get_become_option� s z ActionBase.get_become_optionc C s | j | j||d�S rb )ra r$ re r5 r5 r6 �get_connection_option� s z ActionBase.get_connection_optionc C s | j | jj||d�S rb )ra r$ rD re r5 r5 r6 �get_shell_option� s zActionBase.get_shell_optionc C s0 | j j�|�}| j|dd�}|d dkr,dS dS )NT)�cmd�sudoable�rcr F)r$ rD �exists�_low_level_execute_command)r3 �pathri rJ r5 r5 r6 �_remote_file_exists� s
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td�||
���| j}|r\ �qnq\td| ��t� }| �|� i }| jj�r�d|d< | jjj|d< | jjjd| jd�|d< | jjjd| jd�|d< | jjjd | jd�|d < d D ]�}zLt |||| j f|| jj | j j |t t!| jd d ��d �|��\}}}W �q�W n� t"�y� } z�t#t$| |j%|j&|d!��| _'d"|j% }| j'|d# |< | j j�r�| j j(�r�| j'|d# |< || _)n| j'|d | j j d# |< W Y d$}~n
d$}~0 0 �q�||||fS )%zu
Handles the loading and templating of the module code through the
modify_module() function.
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Builds the environment string to be used when executing the remote task.
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Determines if a tmp path should be created before the action is executed.
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Determines if we are required and can do pipelining
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Returns a list of admin users that are configured for the current shell
plugin
� admin_users�root)rh r� r5 r5 r6 �_get_admin_users� s zActionBase._get_admin_usersc
C sf |� di �� d|� d|� dd���}dD ]0}z| j�|�}W n tyR Y q(Y n0 qbq(| jj}|S )z= consistently get the 'remote_address' for the action plugin Zdelegated_varsZ ansible_hostZinventory_hostnameN)� remote_addr�host)r� r$ r\ r^ r% r� )r3 �tvarsr� Z variationr5 r5 r6 �_get_remote_addr� s $
zActionBase._get_remote_addrc C sZ d}z| j �d�}W n@ ty< t| j dd�p6| jj}Y n tyT | jj}Y n0 |S )z: consistently get the 'remote_user' for the action plugin N� remote_userZ default_user)r$ r\ r^ r� r% r� r] )r3 r� r5 r5 r6 �_get_remote_user� s zActionBase._get_remote_userc C s< | j js dS | �� }| �� }| �d�}t|o8|||g v�S )z}
The user is not the same as the connection user and is not part of the
shell configured admin users
Frz )r$ rd r� r� rf r� )r3 r� r� rz r5 r5 r6 �_is_become_unprivileged� s
z"ActionBase._is_become_unprivilegedc
C s� t | jdd�rtj}n| j| jddd�dd�}| �� }| jj�� }| jjj |||d�}| j
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dk�rDd|v �rD|d dk�rD|d|d 7 }t|��nd| _z8|d �� �d| d�}| jj�|d d��� d } W n t�y� d } Y n0 | d k�r�td ||f ��| | jj_| S ) zE
Create and return a temporary path on a remote box.
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remote_tmp�~/.ansible/tmprc �rj )�basefile�systemrE rk r � zAuthentication failure.� )Zssh� z6SSH encountered an unknown error. The output was:
%s%s�stdout�stderrz�SSH encountered an unknown error during the connection. We recommend you re-run the command using -vvvv, which will enable SSH debugging output to help diagnose the issuezNo space left on devicea5 Failed to create temporary directory. In some cases, you may have been able to authenticate and did not have permissions on the target directory. Consider changing the remote tmp path in ansible.cfg to a path rooted in "/tmp", for more error information use -vvv. Failed command was: %s, exited with result %drr z, stdout output: %sz, stderr output: %sTz%s=rx ry �/zPfailed to resolve remote temporary directory from %s: `%s` returned empty string)r� r$ r� �DEFAULT_LOCAL_TMP�_remote_expand_userrh r� rD Z_generate_temp_dir_nameZmkdtemprm � transportr0 � verbosityr
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zActionBase._make_tmp_pathc C s |o| j otj od|v S )zLDetermine if temporary path should be deleted or kept by user request/configz-tmp-)r) r� r� )r3 �tmp_pathr5 r5 r6 �_should_remove_tmp_path� s z"ActionBase._should_remove_tmp_pathc C s� |du r | j jjr | j jj}|s*| �|�r�| j jj|dd�}| j|dd�}|�dd�dkr|t�d|�d�|�d d
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d| j j_dS ) z$Remove a temporary path we created. NT)ZrecurseFr� rk r z;Error deleting remote temporary files (rc: %s, stderr: %s})r� zNo error string available.) r$ rD rE r� �removerm r� r0 r8 )r3 r� rZ ri Z
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�zActionBase._remove_tmp_pathc C s | j �||� |S )a�
Copy a file from the controller to a remote path
:arg local_path: Path on controller to transfer
:arg remote_path: Path on the remote system to transfer into
.. warning::
* When you use this function you likely want to use use fixup_perms2() on the
remote_path to make sure that the remote file is readable when the user becomes
a non-privileged user.
* If you use fixup_perms2() on the file and copy or move the file into place, you will
need to then remove filesystem acls on the file once it has been copied into place by
the module. See how the copy module implements this for help.
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Copies the module data out to the temporary module path.
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�}|d dk�r.|S | �d��r�t�d| � | �|d | �}|d dk�rj|S td �|d t|d ����td |d t|d �| f ��dS ) a%
We need the files we upload to be readable (and sometimes executable)
by the user being sudo'd to but we want to limit other people's access
(because the files could contain passwords or other private
information. We achieve this in one of these ways:
* If no sudo is performed or the remote_user is sudo'ing to
themselves, we don't have to change permissions.
* If the remote_user sudo's to a privileged user (for instance, root),
we don't have to change permissions
* If the remote_user sudo's to an unprivileged user then we attempt to
grant the unprivileged user access via file system acls.
* If granting file system acls fails we try to change the owner of the
file with chown which only works in case the remote_user is
privileged or the remote systems allows chown calls by unprivileged
users (e.g. HP-UX)
* If the above fails, we next try 'chmod +a' which is a macOS way of
setting ACLs on files.
* If the above fails, we check if ansible_common_remote_group is set.
If it is, we attempt to chgrp the file to its value. This is useful
if the remote_user has a group in common with the become_user. As the
remote_user, we can chgrp the file to that group and allow the
become_user to read it.
* If (the chown fails AND ansible_common_remote_group is not set) OR
(ansible_common_remote_group is set AND the chgrp (or following chmod)
returned non-zero), we can set the file to be world readable so that
the second unprivileged user can read the file.
Since this could allow other users to get access to private
information we only do this if ansible is configured with
"allow_world_readable_tmpfiles" in the ansible.cfg. Also note that
when ansible_common_remote_group is set this final fallback is very
unlikely to ever be triggered, so long as chgrp was successful. But
just because the chgrp was successful, does not mean Ansible can
necessarily access the files (if, for example, the variable was set
to a group that remote_user is in, and can chgrp to, but does not have
in common with become_user).
NZ _IS_WINDOWSFzu+xrk r z=Failed to set execute bit on remote files (rc: {0}, err: {1})r� rz �rxzr-xz{0} allow read,executezA+user:{0}:rx:allowZrXzr-Xz{0} allow readzA+user:{0}:r:allowzLFailed to set file mode or acl on remote temporary files (rc: {0}, err: {1})z�Failed to change ownership of the temporary files Ansible (via chmod nor setfacl) needs to create despite connecting as a privileged user. Unprivileged become user would be unable to read the file.z+azYplaybook_guide/playbooks_privilege_escalation.html#risks-of-becoming-an-unprivileged-userZcommon_remote_groupZworld_readable_tempa� Both common_remote_group and allow_world_readable_tmpfiles are set. chgrp was successful, but there is no guarantee that Ansible will be able to read the files after this operation, particularly if common_remote_group was set to a group of which the unprivileged become user is not a member. In this situation, allow_world_readable_tmpfiles is a no-op. See this URL for more details: %s#risks-of-becoming-an-unprivileged-userzg+rwxzg+rwz�Using world-readable permissions for temporary files Ansible needs to create when becoming an unprivileged user. This may be insecure. For information on securing this, see %s#risks-of-becoming-an-unprivileged-userza+%sz;Failed to set file mode on remote files (rc: {0}, err: {1})z�Failed to set permissions on the temporary files Ansible needs to create when becoming an unprivileged user (rc: %s, err: %s}). For information on working around this, see %s#risks-of-becoming-an-unprivileged-user)r� r� r$ rD r� �
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r� )r$ rD �chownrm )r3 r� �userrj ri r� r5 r5 r6 r� ! s zActionBase._remote_chownc C s" | j j�||�}| j||d�}|S )z.
Issue a remote chgrp command
r� )r$ rD Zchgrprm )r3 r� r� rj ri r� r5 r5 r6 r� ) s zActionBase._remote_chgrpc C s$ | j j�|||�}| j||d�}|S )z0
Issue a remote call to setfacl
r� )r$ rD Z
set_user_faclrm )r3 r� r� r� rj ri r� r5 r5 r6 r� 1 s z ActionBase._remote_set_user_faclc C s� |durt �d� ~t|||dd�}| jd||dd�}|�d�rv|�d �}|sX|�d
�}|sf|�d �}td ||f ��|d
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Get information from remote file.
Nz�_execute_remote_stat no longer honors the tmp parameter. Action plugins should set self._connection._shell.tmpdir to share the tmpdirZsha1)rn �followZ get_checksumZchecksum_algorithmzansible.legacy.statF)r� r� rI r� �failed�
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d}~0 0 W |S | Y S 0 dS )a� Deprecated. Use _execute_remote_stat() instead.
Produces a remote checksum given a path,
Returns a number 0-4 for specific errors instead of checksum, also ensures it is different
0 = unknown error
1 = file does not exist, this might not be an error
2 = permissions issue
3 = its a directory, not a file
4 = stat module failed, likely due to not finding python
5 = appropriate json module not found
zThe '_remote_checksum()' method is deprecated. The plugin author should update the code to use '_execute_remote_stat()' insteadz2.16�0)r� rl �isdir�3r� zPermission denied�2�MODULE FAILURE�4�json�5N)r1 Z
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