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nftables.cpython-36.pyc
3 1�g]8 � @ sD d dl Z d dlT d dlZd dlZdZG dd� d�ZG dd� d�ZdS )� N)�*z0.1c @ s e Zd ZdZdd� Zdd� ZdS )�SchemaValidatorz+Libnftables JSON validator using jsonschemac C sJ t jjt jjt�d�}t|d��}tj|�| _W d Q R X dd l }|| _ d S )Nz schema.json�rr ) �os�path�join�dirname�__file__�open�json�load�schema� jsonschema)�selfZ schema_pathZ schema_filer � r � /usr/lib/python3.6/nftables.py�__init__ s zSchemaValidator.__init__c C s | j j|| jd� d S )N)�instancer )r �validater )r r r r r r " s zSchemaValidator.validateN)�__name__� __module__� __qualname__�__doc__r r r r r r r s r c @ sP e Zd ZdZdddddddd �ZdWdXdYdZd[d\d]d^d_d`dadbd� ZdZdcdd�Zdd� Zdd� Z dd � Z d d � Z d d � Z d!d"� Z d#d$� Zd%d&� Zd'd(� Zd)d*� Zd+d,� Zd-d.� Zd/d0� Zd1d2� Zd3d4� Zd5d6� Zd7d8� Zd9d:� Zd;d<� Zd=d>� Zd?d@� Z dAdB� Z dCdD� Z dEdF� Z dGdH� Z dIdJ� Z!dKdL� Z"dMdN� Z#dOdP� Z$dQdR� Z%dSdT� Z&dUdV� Z'dS )d�Nftablesz*A class representing libnftables interface� � � � � � �@ )�scanner�parser�evalZnetlinkZmnlz proto-ctxZsegtreer � � � � � � � ) � reversedns�service� stateless�handler �echo�guid� numeric_proto� numeric_prio�numeric_symbol� numeric_time�terseN�libnftables.so.1.1.0c C s> t j|�}|j| _t| j_tg| j_|j| _t| j_tg| j_|j | _ ttg| j _|j | _ t| j _tg| j _|j | _ ttg| j _|j | _ t| j _tg| j _|j | _ t| j _tg| j _|j| _t| j_tg| j_|j| _t| j_tg| j_|j| _t| j_ttg| j_|j| _tg|j_| jd�| _| j | j� | j| j� dS )al Instantiate a new Nftables class object. Accepts a shared object file to open, by default standard search path is searched for a file named 'libnftables.so'. After loading the library using ctypes module, a new nftables context is requested from the library and buffering of output and error streams is turned on. r N)ZcdllZ LoadLibraryZ nft_ctx_newZc_void_pZrestypeZc_intZargtypes�nft_ctx_output_get_flagsZc_uint�nft_ctx_output_set_flags�nft_ctx_output_get_debug�nft_ctx_output_set_debugZnft_ctx_buffer_output�nft_ctx_get_output_bufferZc_char_pZnft_ctx_buffer_error�nft_ctx_get_error_buffer�nft_run_cmd_from_buffer� nft_ctx_free�_Nftables__ctx)r Zsofile�libr r r r C sD zNftables.__init__c C s | j | j� d S )N)r> r? )r r r r �__del__ s zNftables.__del__c C s | j | }| j| j�|@ S )N)� output_flagsr7 r? )r �name�flagr r r Z__get_output_flag� s zNftables.__get_output_flagc C sD | j | }| j| j�}|r$||B }n || @ }| j| j|� ||@ S )N)rB r7 r? r8 )r rC �valrD �flagsZ new_flagsr r r Z__set_output_flag� s zNftables.__set_output_flagc C s | j d�S )z�Get the current state of reverse DNS output. Returns a boolean indicating whether reverse DNS lookups are performed for IP addresses in output. r+ )�_Nftables__get_output_flag)r r r r �get_reversedns_output� s z Nftables.get_reversedns_outputc C s | j d|�S )z�Enable or disable reverse DNS output. Accepts a boolean turning reverse DNS lookups in output on or off. Returns the previous value. r+ )�_Nftables__set_output_flag)r rE r r r �set_reversedns_output� s z Nftables.set_reversedns_outputc C s | j d�S )z�Get the current state of service name output. Returns a boolean indicating whether service names are used for port numbers in output or not. r, )rG )r r r r �get_service_output� s zNftables.get_service_outputc C s | j d|�S )z�Enable or disable service name output. Accepts a boolean turning service names for port numbers in output on or off. Returns the previous value. r, )rI )r rE r r r �set_service_output� s zNftables.set_service_outputc C s | j d�S )z�Get the current state of stateless output. Returns a boolean indicating whether stateless output is active or not. r- )rG )r r r r �get_stateless_output� s z Nftables.get_stateless_outputc C s | j d|�S )z�Enable or disable stateless output. Accepts a boolean turning stateless output either on or off. Returns the previous value. r- )rI )r rE r r r �set_stateless_output� s z Nftables.set_stateless_outputc C s | j d�S )z~Get the current state of handle output. Returns a boolean indicating whether handle output is active or not. r. )rG )r r r r �get_handle_output� s zNftables.get_handle_outputc C s | j d|�S )z�Enable or disable handle output. Accepts a boolean turning handle output on or off. Returns the previous value. r. )rI )r rE r r r �set_handle_output� s zNftables.set_handle_outputc C s | j d�S )zzGet the current state of JSON output. Returns a boolean indicating whether JSON output is active or not. r )rG )r r r r �get_json_output� s zNftables.get_json_outputc C s | j d|�S )z�Enable or disable JSON output. Accepts a boolean turning JSON output either on or off. Returns the previous value. r )rI )r rE r r r �set_json_output� s zNftables.set_json_outputc C s | j d�S )zzGet the current state of echo output. Returns a boolean indicating whether echo output is active or not. r/ )rG )r r r r �get_echo_output� s zNftables.get_echo_outputc C s | j d|�S )z�Enable or disable echo output. Accepts a boolean turning echo output on or off. Returns the previous value. r/ )rI )r rE r r r �set_echo_output� s zNftables.set_echo_outputc C s | j d�S )z�Get the current state of GID/UID output. Returns a boolean indicating whether names for group/user IDs are used in output or not. r0 )rG )r r r r �get_guid_output� s zNftables.get_guid_outputc C s | j d|�S )z�Enable or disable GID/UID output. Accepts a boolean turning names for group/user IDs on or off. Returns the previous value. r0 )rI )r rE r r r �set_guid_output� s zNftables.set_guid_outputc C s | j d�S )ztGet current status of numeric protocol output flag. Returns a boolean value indicating the status. r1 )rG )r r r r �get_numeric_proto_output s z!Nftables.get_numeric_proto_outputc C s | j d|�S )z�Set numeric protocol output flag. Accepts a boolean turning numeric protocol output either on or off. Returns the previous value. r1 )rI )r rE r r r �set_numeric_proto_output s z!Nftables.set_numeric_proto_outputc C s | j d�S )zzGet current status of numeric chain priority output flag. Returns a boolean value indicating the status. r2 )rG )r r r r �get_numeric_prio_output s z Nftables.get_numeric_prio_outputc C s | j d|�S )z�Set numeric chain priority output flag. Accepts a boolean turning numeric chain priority output either on or off. Returns the previous value. r2 )rI )r rE r r r �set_numeric_prio_output s z Nftables.set_numeric_prio_outputc C s | j d�S )zsGet current status of numeric symbols output flag. Returns a boolean value indicating the status. r3 )rG )r r r r �get_numeric_symbol_output% s z"Nftables.get_numeric_symbol_outputc C s | j d|�S )z�Set numeric symbols output flag. Accepts a boolean turning numeric representation of symbolic constants in output either on or off. Returns the previous value. r3 )rI )r rE r r r �set_numeric_symbol_output, s z"Nftables.set_numeric_symbol_outputc C s | j d�S )zqGet current status of numeric times output flag. Returns a boolean value indicating the status. r4 )rG )r r r r �get_numeric_time_output6 s z Nftables.get_numeric_time_outputc C s | j d|�S )z�Set numeric times output flag. Accepts a boolean turning numeric representation of time values in output either on or off. Returns the previous value. r4 )rI )r rE r r r �set_numeric_time_output= s z Nftables.set_numeric_time_outputc C s | j d�S )z|Get the current state of terse output. Returns a boolean indicating whether terse output is active or not. r5 )rG )r r r r �get_terse_outputG s zNftables.get_terse_outputc C s | j d|�S )z�Enable or disable terse output. Accepts a boolean turning terse output either on or off. Returns the previous value. r5 )rI )r rE r r r �set_terse_outputN s zNftables.set_terse_outputc C sV | j | j�}g }x2| jj� D ]$\}}||@ r |j|� || M }q W |rR|j|� |S )zmGet currently active debug flags. Returns a set of flag names. See set_debug() for details. )r9 r? � debug_flags�items�append)r rE �names�n�vr r r � get_debugW s zNftables.get_debugc C s` | j � }t|�ttgkr |g}d}x*|D ]"}t|�tkrB| j| }||O }q(W | j| j|� |S )a Set debug output flags. Accepts either a single flag or a set of flags. Each flag might be given either as string or integer value as shown in the following table: Name | Value (hex) ----------------------- scanner | 0x1 parser | 0x2 eval | 0x4 netlink | 0x8 mnl | 0x10 proto-ctx | 0x20 segtree | 0x40 Returns a set of previously active debug flags, as returned by get_debug() method. r )rg �type�str�intra r: r? )r �values�oldrE rf r r r � set_debugh s zNftables.set_debugc C sd d}t |t�s d}|jd�}| j| j|�}| j| j�}| j| j�}|rZ|jd�}|jd�}|||fS )a� Run a simple nftables command via libnftables. Accepts a string containing an nftables command just like what one would enter into an interactive nftables (nft -i) session. Returns a tuple (rc, output, error): rc -- return code as returned by nft_run_cmd_from_buffer() fuction output -- a string containing output written to stdout error -- a string containing output written to stderr FTzutf-8)� isinstance�bytes�encoder= r? r; r< �decode)r ZcmdlineZcmdline_is_unicode�rc�output�errorr r r �cmd� s z Nftables.cmdc C sJ | j d�}| jtj|��\}}}|s.| j |� t|�r@tj|�}|||fS )ai Run an nftables command in JSON syntax via libnftables. Accepts a hash object as input. Returns a tuple (rc, output, error): rc -- return code as returned by nft_run_cmd_from_buffer() function output -- a hash object containing library standard output error -- a string containing output written to stderr T)rR ru r �dumps�len�loads)r � json_rootZ json_out_oldrr rs rt r r r �json_cmd� s zNftables.json_cmdc C s | j st� | _ | j j|� dS )z�Validate JSON object against libnftables schema. Accepts a hash object as input. Returns True if JSON is valid, raises an exception otherwise. T)� validatorr r )r ry r r r � json_validate� s zNftables.json_validater r r r r r r � � i i i )r6 )(r r r r ra rB r{ r rA rG rI rH rJ rK rL rM rN rO rP rQ rR rS rT rU rV rW rX rY rZ r[ r\ r] r^ r_ r` rg rm ru rz r| r r r r r % sl < #r )r Zctypes�sysr ZNFTABLES_VERSIONr r r r r r �<module> s
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