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Edit: dhcp.cpython-310.pyc
o �t�h�� � @ s� d dl Z d dlZd dlZd dlZd dlZd dlZd dlZd dlZd dlZd dl m Z d dl m Z d dl mZ d dlmZmZmZmZmZmZ d dlZd dlmZmZmZ d dlm Z m Z e� e �Z dZ!d Z"d Z#d Z$G d d � d e%�Z&G dd� de&�Z'G dd� de&�Z(G dd� de&�Z) d&deee*e*e*gdf dee*ef fdd�Z+dd� Z,d'dd�Z-d'd d �Z.G d d � d e j/�Z0G d d!� d!e0�Z1G d"d#� d#e0�Z2G d$d%� d%e0�Z3e2e1e3gZ4dS )(� N)�suppress)�StringIO)�TimeoutExpired)�Any�Callable�Dict�List�Optional�Tuple)�subp� temp_utils�util)�get_interface_mac�is_ib_interfacez/run/systemd/netif/leasesz/var/lib/dhclientz .+\.leases?$aN #!/bin/sh log() { echo "udhcpc[$PPID]" "$interface: $2" } [ -z "$1" ] && echo "Error: should be called from udhcpc" && exit 1 case $1 in bound|renew) cat <<JSON > "$LEASE_FILE" { "interface": "$interface", "fixed-address": "$ip", "subnet-mask": "$subnet", "routers": "${router%% *}", "static_routes" : "${staticroutes}" } JSON ;; deconfig) log err "Not supported" exit 1 ;; leasefail | nak) log err "configuration failed: $1: $message" exit 1 ;; *) echo "$0: Unknown udhcpc command: $1" >&2 exit 1 ;; esac c @ � e Zd ZdZdS )�NoDHCPLeaseErrorz'Raised when unable to get a DHCP lease.N��__name__� __module__� __qualname__�__doc__� r r �4/usr/lib/python3/dist-packages/cloudinit/net/dhcp.pyr A � r c @ r )�InvalidDHCPLeaseFileErrorz�Raised when parsing an empty or invalid dhclient.lease file. Current uses are DataSourceAzure and DataSourceEc2 during ephemeral boot to scrape metadata. Nr r r r r r E r r c @ r )�NoDHCPLeaseInterfaceErrorz7Raised when unable to find a viable interface for DHCP.Nr r r r r r M r r c @ r )� NoDHCPLeaseMissingDhclientErrorz$Raised when unable to find dhclient.Nr r r r r r Q r r � dhcp_log_func�returnc C s2 |p| j }|du rt�d� t� �| j�||| �S )a! Perform dhcp discovery if nic valid and dhclient command exists. If the nic is invalid or undiscoverable or dhclient command is not found, skip dhcp_discovery and return an empty dict. @param nic: Name of the network interface we want to run dhclient on. @param dhcp_log_func: Callable accepting the interface and client's stdout, stderr streams. @return: A list of dicts representing dhcp options for each lease obtained from the dhclient discovery if run, otherwise an empty list is returned. Nz1Skip dhcp_discovery: Unable to find fallback nic.)�fallback_interface�LOG�debugr � dhcp_client�dhcp_discovery)�distro�nicr � interfacer r r � maybe_perform_dhcp_discoveryU s r' c C s t tjt| �dd��S )z�Parse a systemd lease file content as in /run/systemd/netif/leases/ Parse this (almost) ini style file even though it says: # This is private data. Do not parse. Simply return a dictionary of key/values.F)� list_values)�dict� configobj� ConfigObjr )�contentr r r �networkd_parse_leasen s r- c C sP | du rt } i }tj�| �s|S t�| �D ]}tt�tj�| |���||< q|S )z�Return a dictionary of dictionaries representing each lease found in lease_d.i The top level key will be the filename, which is typically the ifindex.N) �NETWORKD_LEASES_DIR�os�path�isdir�listdirr- r �load_text_file�join)�leases_d�ret�lfiler r r �networkd_load_leasesy s �r8 c C sF |d u rt }t|d�}t|�� �D ]\}}|�| �r || S qd S )N)r5 )r. r8 �sorted�items�get)�keynamer5 �leases�_ifindex�datar r r � networkd_get_option_from_leases� s �r@ c @ s� e Zd ZdZdZdd� Zedd� �Zedd� �Zed e fd d ��Z ed e fd d ��Z e j de dee ef fdd��Zee j de deee e f fdd���Ze j dde deee e e gdf dee ef fdd��ZdS )� DhcpClient� � c C s t �| j�| _| js t� �d S �N)r �which� client_name�dhcp_client_pathr ��selfr r r �__init__� s �zDhcpClient.__init__c C s t j d| jgddgd� d S )N�pkillr � ��rcs)r rF )�clsr r r �kill_dhcp_client� s zDhcpClient.kill_dhcp_clientc C s* | � � t�d�}|D ]}t�|� q d S )Nz/var/lib/dhcp/*)rP �globr/ �remove)rO �files�filer r r � clear_leases� s �zDhcpClient.clear_leases�dhcp_interfacec C s |j d| j|ddgd� d S )N�startr rL rM ��manage_servicerF �rO rV r$ r r r � start_service� s �zDhcpClient.start_servicec C s |j d| jddgd� d S )N�stopr rL rM rX rZ r r r � stop_service� s zDhcpClient.stop_servicer& r c C � i S )z�Get the most recent lease from the ephemeral phase as a dict. Return a dict of dhcp options. The dict contains key value pairs from the most recent lease. r �rI r& r r r �get_newest_lease� s zDhcpClient.get_newest_lease�routesc C s g S )ap parse classless static routes from string The tuple is composed of the network_address (including net length) and gateway for a parsed static route. @param routes: string containing classless static routes @returns: list of tuple(str, str) for all valid parsed routes until the first parsing error. r )ra r r r �parse_static_routes� s z DhcpClient.parse_static_routesNr c C r^ )a� Run dhcp client on the interface without scripts or filesystem artifacts. @param interface: Name of the network interface on which to send a dhcp request @param dhcp_log_func: Callable accepting the interface and client's stdout, stderr streams. @param distro: a distro object for network interface manipulation @return: dict of lease options representing the most recent dhcp lease parsed from the dhclient.lease file r )rI r& r r$ r r r r# � s zDhcpClient.dhcp_discovery�NN)r r r rF �timeoutrJ � classmethodrP rU �strr[ r] �abc�abstractmethodr r r` � staticmethodr r rb r r r# r r r r rA � s6 " ��� �rA c s� e Zd ZdZ� fdd�Zededeeee f fdd��Z edd � �Z d edeee f fd d �Z dd ede eeeegd f deee f fdd�Zededeeeef fdd��Zede e fdd��Zdefdd�Z� ZS )� IscDhclient�dhclientc � t � �� d| _d S )Nz/run/dhclient.lease��superrJ � lease_filerH �� __class__r r rJ � � zIscDhclient.__init__� lease_contentr c C s� t �dt j�}g }| s g S |�| �D ]:}g }|�d�D ]}|�� �dd��dd�}|r4|�|�dd�� qt|�}|� d�}|rGt � |�|d< |�|� q|S ) z�parse the content of a lease file @param lease_content: a string containing the contents of an isc-dhclient lease @return: a list of leases, most recent last zlease {(?P<lease>.*?)}\n�;�"rB zoption � rL � unknown-245) �re�compile�DOTALL�findall�split�strip�replace�appendr) r; rj �get_ip_from_lease_value)rs � lease_regex� dhcp_leases�lease� lease_options�line�options�opt_245r r r � parse_leases� s& � � zIscDhclient.parse_leasesc C sx | � dd�}t|�dkr2d}|�d�D ]}t|�dkr d| }||7 }qt�dt|� dd�d��}n|�d �}t�|�S ) N�\rB � �:rL �0z>L� zutf-8) r~ �lenr| �struct�pack�int�encode�socket� inet_ntoa)�fallback_lease_value�unescaped_value� hex_string�hex_pair� packed_bytesr r r r� s � z#IscDhclient.get_ip_from_lease_valuer& c C sr t t��+ t�| j�}|r | �|�}|r'|d W d � S W d � i S W d � i S 1 s2w Y i S )a� Get the most recent lease from the ephemeral phase as a dict. Return a dict of dhcp options. The dict contains key value pairs from the most recent lease. @param interface: an interface string - not used in this class, but required for function signature compatibility with other classes that require a distro object @raises: InvalidDHCPLeaseFileError on empty or unparsable leasefile content. ���N)r �FileNotFoundErrorr r3 ro r� )rI r& r, r� r r r r` s � �� ��z IscDhclient.get_newest_leaseNr c C sj t �d|� d}d}d}t| j| �}t| jd �}tt�� t�|� t�| j� W d � n1 s4w Y |j � |� t |�rhdt |�dd� } d|| f } t jd d �} tj�| |d �}t�|| � zt�|�| j| j|||��\} } W n tjy� } zt �d |j|j|j� t|�d}~ww tj|| jg|dd �}|r�t � dd�dd� |D ��� i S d}d}d}d}t |�D ]M}z t� |�� � }t|�}W n ty� d|� d�}Y n* t y� d|� d�}Y n w |�!|�}|dk�rt �d|� t�"|t#j$� d } n t%�&|� q�t �|� |�s t �'d||d � |du�r(||| | � | �(|�}|�r2|S t)� �) a� Run dhclient on the interface without scripts/filesystem artifacts. @param interface: Name of the network interface on which to send a dhcp request @param dhcp_log_func: Callable accepting the interface and client's stdout, stderr streams. @param distro: a distro object for network interface manipulation @return: dict of lease options representing the most recent dhcp lease parsed from the dhclient.lease file �!Performing a dhcp discovery on %sz/run/dhclient.pidN�{�G�z�?� z20:%s�$ z0interface "%s" {send dhcp-client-identifier %s;}T�� needs_exez-dhclient.confz3dhclient exited with code: %s stderr: %r stdout: %r)�maxwait�naplenz+dhclient did not produce expected files: %sz, c s s � | ] }t j�|�V qd S rD )r/ r0 �basename)�.0�fr r r � <genexpr> s � z-IscDhclient.dhcp_discovery.<locals>.<genexpr>�unknownFrB �No PID file found at z, dhclient is still running�PID file contained [z ], dhclient is still runningrL z killing dhclient with pid=%szCdhclient(pid=%s, parentpid=%s) failed to daemonize after %s secondsg $@)*r r! r� rd r r� r/ rR ro �net_ops�link_upr r r �get_tmp_ancestorr0 r4 r � write_filer �build_dhclient_cmdrG �ProcessExecutionError� exit_code�stderr�stdoutr �wait_for_files�warning�ranger3 r} � ValueError� get_proc_ppid�kill�signal�SIGKILL�time�sleep�errorr` r )rI r& r r$ �pid_file� config_file� sleep_time� sleep_cyclesr� �dhcp_client_identifier�interface_dhclient_content�tmp_dir�out�errr� �missing�ppid� daemonized� pid_content� debug_msg�_�pidr� r r r r# ( s� � ��� � � ��� �� � �� � zIscDhclient.dhcp_discoveryra c s8 | � d�� dd� t�d� �D �}g }d� v r dd� |D �}� fdd�}d }t|�D �]o\}}||k r3q)t|�}|td d �v rzd }t||d � �|k rZ|||t||d � �� | S d�||d |d � �} d�||d || � �} || }�n|tdd �v r�d}t||d � �|k r�|||t||d � �� | S d�||d |d � dg �} d�||d || � �} || }n�|td d�v �rd}t||d � �|k r�|||t||d � �� | S d�||d |d � ddg �} d�||d || � �} || }n�|tdd �v �rNd}t||d � �|k �r+|||t||d � �� | S d�||d |d � g d� �} d�||d || � �} || }n@|d k�r�d}t||d � �|k �rp|||t||d � �� | S d} d�||d || � �} || }n t� d|� | S |� d | |f | f� q)|S ) a( parse rfc3442 format and return a list containing tuple of strings. The tuple is composed of the network_address (including net length) and gateway for a parsed static route. It can parse two formats of rfc3442, one from dhcpcd and one from dhclient (isc). @param rfc3442: string in rfc3442 format (isc or dhcpd) @returns: list of tuple(str, str) for all valid parsed routes until the first parsing error. e.g.: sr=parse_static_routes( "32,169,254,169,254,130,56,248,255,0,130,56,240,1") sr=[ ("169.254.169.254/32", "130.56.248.255"), ("0.0.0.0/0", "130.56.240.1") ] sr2 = parse_static_routes( "24.191.168.128 192.168.128.1,0 192.168.128.1") sr2 = [ ("191.168.128.0/24", "192.168.128.1"), ("0.0.0.0/0", "192.168.128.1") ] # unknown-121 option format sr3 = parse_static_routes( "0:a:0:0:1:20:a8:3f:81:10:a:0:0:1:20:a9:fe:a9:fe:a:0:0:1") sr3 = [ ("0.0.0.0/0", "10.0.0.1"), ("168.63.129.16/32", "10.0.0.1"), ("169.254.169.254/32", "10.0.0.1"), ] Python version of isc-dhclient's hooks: /etc/dhcp/dhclient-exit-hooks.d/rfc3442-classless-routes rt c S s g | ]}|r|�qS r r �r� �tokr r r � <listcomp>� s z3IscDhclient.parse_static_routes.<locals>.<listcomp>z[, . :]r� c S s g | ] }t t|d ���qS )r� )rf r� r� r r r r� � s c s d| ||� f }t �|� d S )Nz�RFC3442 string malformed. Current route has CIDR of %s and requires %s significant octets, but only %s remain. Verify DHCP rfc3442-classless-static-routes value: %s)r r� )�cidr�required�remain�msg��rfc3442r r � _trunc_error� s ��z5IscDhclient.parse_static_routes.<locals>._trunc_errorr � �! � N�.rL � � � r� r� � � � r� )r� r� r� z0.0.0.0zSParsed invalid net length "%s". Verify DHCP rfc3442-classless-static-routes value.z%s/%s) �rstriprx r| � enumerater� r� r� r4 r r� r ) ra �tokens� static_routesr� � current_idx�idxr� � net_length�req_toks� net_address�gatewayr r� r rb � s| * " � ��z IscDhclient.parse_static_routesc C s� d}| j | jfttffD ]C\}}|sq g }zt�|�}W n ty% Y q w d}|D ] }t�||�s3q*tj � ||�}tj � |�}||krH|}|}q*|rO| S q dS )z�Get the latest lease file from a distro-managed dhclient Doesn't consider the ephemeral timeframe lease. @param distro: used for distro-specific lease location and filename @return: The most recent lease file, or None Ng �) �dhclient_lease_directory�dhclient_lease_file_regex�DHCLIENT_FALLBACK_LEASE_DIR� DHCLIENT_FALLBACK_LEASE_REGEXr/ r2 r� rx �searchr0 r4 �getmtime) r$ � latest_file� directory�regex� lease_files� latest_mtime�fname�abs_path�mtimer r r �!get_newest_lease_file_from_distro' s8 � � � ��z-IscDhclient.get_newest_lease_file_from_distro�keyc C sR | � |�}|r#t�|�}|r%t| �|��D ]}|�|�}|r"| S qdS dS dS )a8 Get a key from the latest lease from distro-managed dhclient Doesn't consider the ephemeral timeframe lease. @param lease_dir: distro-specific lease to check @param lease_file_regex: distro-specific regex to match lease name @return: The most recent lease file, or None N)r� r r3 �reversedr� r; )rI r$ r� ro r, r� �serverr r r �get_key_from_latest_leaseS s ��z%IscDhclient.get_key_from_latest_leaserc )r r r rF rJ ri rf r r r r� r� r` r r r# r rb r� r� � __classcell__r r rp r rj � s. ��� � w+rj c @ s� e Zd ZdZdZ ddedeeeeegdf deee f fdd�Z e d e d e dee fd d ��Ze d ededefdd��Zdedeee f fdd�Ze dedeeeef fdd��ZdS )�Dhcpcd�dhcpcdi, Nr& r r c C s t �d|� d}t| j| �}g }|j�|� z�t|�r dg}| jdddddg|�|�}tj|| jd �\}} |d ur@|||| � | � |�} | r�t�g |�d ��j � � } d } d } d }t |�D ]b}z't �| �� � } t| �}|�|�} | r�t �d|| � t�| tj� W | W S W n. ty� t �d| � Y | W S ty� d| � d�}Y n ty� d| � d�}Y nw | W S t�|� q]t �|� | W S td�� ty� } zt �d|j|j|j � t|�d }~w tj y� } zt �d|j |j|j � t|�d }~ww )a� Run dhcpcd on the interface without scripts/filesystem artifacts. @param interface: Name of the network interface on which to send a dhcp request @param dhcp_log_func: Callable accepting the interface and client's stdout, stderr streams. @param distro: a distro object for network interface manipulation @return: dict of lease options representing the most recent dhcp lease parsed from the dhclient.lease file r� r� z --clientid� --ipv4onlyz--waitipz --persistentz--noarpz--script=/bin/true)rd Nz-PFrB z!killing dhcpcd with pid=%s gid=%sz9Process group id [%s] has already exited, nothing to killr� z, dhcpcd is still runningr� z], dhcpcd is still runningzNo lease foundz8dhcpcd timed out after %s seconds: stderr: %r stdout: %r�1dhcpcd exited with code: %s stderr: %r stdout: %r) r r! r� rd r� r� r rF r r` r� r} r� r r3 � get_proc_pgidr/ �killpgr� r� �ProcessLookupErrorr� r� r� r� r r r� r� r� )rI r& r r$ r� r� �infiniband_argument�commandr� r� r� r� r� �gidr� r� r� r� r r r r# j s� ��� � �� � � � �� �����zDhcpcd.dhcp_discoveryr? �dhcp_option_numberc C s> d}dt dtfdd�}|| |�D ] \}}||kr | S qdS )aV get a specific option from a binary lease file This is required until upstream dhcpcd supports unknown option 245 upstream bug: https://github.com/NetworkConfiguration/dhcpcd/issues/282 @param data: Binary lease data @param number: Option number to return @return: the option (bytes) or None �� r? �indexc s sl � t | �|d kr4| | }| d| }| d| d| | � }||fV d| | }t | �|d ks dS dS )z�options are variable length, and consist of the following format option number: 1 byte option length: 1 byte option data: variable length (see length field) r� rL N)r� )r? r �code�length�optionr r r � iter_options� s � �z>Dhcpcd.parse_unknown_options_from_packet.<locals>.iter_optionsN)�bytesr� )r? r �INDEXr r r r r r �!parse_unknown_options_from_packet� s �z(Dhcpcd.parse_unknown_options_from_packet� lease_dumpc C s t �d|| � z$tdd� | �� �dd��d�D ��}|s*d}t �|| � t|| ��W n ty@ } z t �d| � t|�d }~ww ||d < d d � |� � D �}d dd�}|� � D ]\}}||v rf|� |�||< qWt � d|� d��}t �|d�} | rt�| �|d< |S )a` parse the output of dhcpcd --dump map names to the datastructure we create from dhclient example dhcpcd output: broadcast_address='192.168.15.255' dhcp_lease_time='3600' dhcp_message_type='5' dhcp_server_identifier='192.168.0.1' domain_name='us-east-2.compute.internal' domain_name_servers='192.168.0.2' host_name='ip-192-168-0-212' interface_mtu='9001' ip_address='192.168.0.212' network_number='192.168.0.0' routers='192.168.0.1' subnet_cidr='20' subnet_mask='255.255.240.0' z)Parsing dhcpcd lease for interface %s: %rc S s" g | ] }d |v r|j d dd��qS )�=rL )�maxsplit)r| )r� �ar r r r� * s �z-Dhcpcd.parse_dhcpcd_lease.<locals>.<listcomp>�'rB � z;No valid DHCP lease configuration found in dhcpcd lease: %rz Error parsing dhcpcd lease: %rNr& c S s i | ] \}}|� d d�|�qS )r� �-)r~ )r� r� �valuer r r � <dictcomp>? s z-Dhcpcd.parse_dhcpcd_lease.<locals>.<dictcomp>z fixed-addressr� )z ip-addresszclassless-static-routesz/var/lib/dhcpcd/z.lease� rw )r r! r) r} r~ r| r� r r� r: �popr �load_binary_filer r r� r� ) r r& r� r� r� �name_map�source� destination� dhcp_messager� r r r �parse_dhcpcd_lease sH ���� � �� �� � zDhcpcd.parse_dhcpcd_leasec C sX z| � t�| jdd|g�j|�W S tjy+ } zt�d|j|j|j� t |�d}~ww )z�Return a dict of dhcp options. @param interface: which interface to dump the lease from @raises: InvalidDHCPLeaseFileError on empty or unparsable leasefile content. z --dumpleaser r N) r% r rF r� r� r r! r� r� r )rI r& r� r r r r` V s, ��� ���zDhcpcd.get_newest_leasera c C sD | � � }|rdd� t|ddd� |ddd� �D �S t�d| � g S )a� classless static routes as returned from dhcpcd --dumplease and return a list containing tuple of strings. The tuple is composed of the network_address (including net length) and gateway for a parsed static route. @param routes: string containing classless static routes @returns: list of tuple(str, str) for all valid parsed routes until the first parsing error. e.g.: sr=parse_static_routes( "0.0.0.0/0 10.0.0.1 168.63.129.16/32 10.0.0.1" ) sr=[ ("0.0.0.0/0", "10.0.0.1"), ("169.63.129.16/32", "10.0.0.1"), ] c S � g | ]}|�qS r r �r� �ir r r r� � � z.Dhcpcd.parse_static_routes.<locals>.<listcomp>Nr� rL z'Malformed classless static routes: [%s])r| �zipr r� �ra r� r r r rb s s ( zDhcpcd.parse_static_routesrc )r r r rF rd rf r r r r r# ri r r� r r% r` r r rb r r r r r f s2 ��� �w�� �+H $r c s� e Zd ZdZ� fdd�Z ddedeeeeegdf deee f fdd �Z dedeee f fd d �Z e d ede eeef fd d��Z� ZS )�Udhcpc�udhcpcc rl )NrB rm rH rp r r rJ � rr zUdhcpc.__init__Nr& r r c C sH t �d|� tjdd�}tj�||d �| _tt �� t� | j� W d � n1 s+w Y |j � |� tj�|d�}t �|td� | jdd d |d |d d ddg }t|�rj|�dd�t|�dd� �dd��g� ztj|d| jidd�\}}W n tjy� } zt �d| j| j| j� t| �d} ~ ww |dur�||||� | � |�S )a~ Run udhcpc on the interface without scripts or filesystem artifacts. @param interface: Name of the network interface on which to run udhcpc. @param dhcp_log_func: Callable accepting the interface and client's stdout, stderr streams. @return: A list of dicts of representing the dhcp leases parsed from the udhcpc lease file. r� Tr� z .lease.jsonN� udhcpc_scripti� z-O� staticroutesz-iz-sz-nz-qz-fz-vz-xz 0x3d:20{}r� r� rB � LEASE_FILE)� update_env�capturez1udhcpc exited with code: %s stderr: %r stdout: %r) r r! r r� r/ r0 r4 ro r r� rR r� r� r r� � UDHCPC_SCRIPTrF r �extend�formatr r~ r r� r� r� r� r r` ) rI r& r r$ r� r. �cmdr� r� r� r r r r# � s\ � ���� ���� zUdhcpc.dhcp_discoveryc C s t �t �| j��S )a� Get the most recent lease from the ephemeral phase as a dict. Return a dict of dhcp options. The dict contains key value pairs from the most recent lease. @param interface: an interface name - not used in this class, but required for function signature compatibility with other classes that require a distro object @raises: InvalidDHCPLeaseFileError on empty or unparsable leasefile content. )r � load_jsonr3 ro r_ r r r r` � s zUdhcpc.get_newest_leasera c C s8 | � � }|rdd� t|d d d� |dd d� �D �S g S )Nc S r& r r r' r r r r� � r) z.Udhcpc.parse_static_routes.<locals>.<listcomp>r� rL )r| r* r+ r r r rb � s (zUdhcpc.parse_static_routesrc )r r r rF rJ rf r r r r r# r` ri r r rb r r r rp r r, � s ��� �H(r, rc rD )5rg rQ �loggingr/ rx r� r� r� r� � contextlibr �ior � subprocessr �typingr r r r r r r* � cloudinitr r r � cloudinit.netr r � getLoggerr r r. r� r� r3 � Exceptionr r r r rf r' r- r8 r@ �ABCrA rj r r, �ALL_DHCP_CLIENTSr r r r �<module> sZ !�� � K .f
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