File: //lib/python3/dist-packages/cloudinit/net/__pycache__/dhcp.cpython-310.pyc
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e�Zd dd�Zdd� Zd dd�Zdd� Zd dd�Z d dd�Z dd� Z dS ) � N)�StringIO)�subp�util)�find_fallback_nic�get_devicelistz/run/systemd/netif/leasesc @ � 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 � 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 r r c @ r )�NoDHCPLeaseInterfaceErrorz7Raised when unable to find a viable interface for DHCP.Nr r r r r r % r r c @ r )� NoDHCPLeaseMissingDhclientErrorz$Raised when unable to find dhclient.Nr r r r r r ) r r c C sn | du rt � } | du rt�d� t� �n| t� vr"t�d| � t� �t�d�}|s1t�d� t� �t|| |�S )aJ 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: A callable accepting the dhclient output and error
streams.
@param tmp_dir: Tmp dir with exec permissions.
@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.z8Skip dhcp_discovery: nic %s not found in get_devicelist.�dhclientz7Skip dhclient configuration: No dhclient command found.) r �LOG�debugr r r �whichr �dhcp_discovery)�nic�
dhcp_log_func�tmp_dir�
dhclient_pathr r r � maybe_perform_dhcp_discovery- s
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�| ���|S ) a Parse the given dhcp lease file for the most recent lease.
Return a list of dicts of dhcp options. Each dict contains key value pairs
a specific lease in order from oldest to newest.
@raises: InvalidDHCPLeaseFileError on empty of unparseable leasefile
content.
zlease {(?P<lease>.*?)}\nr z&Cannot parse empty dhcp lease file {0}�;�"� zoption � � z1Cannot parse dhcp lease file {0}. No leases found)�re�compile�DOTALLr � load_file�lenr �format�findall�split�strip�replace�append�dict)�
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s�t �d | | d � |dur�|||� t|�S )!a� Run dhclient on the interface without scripts or filesystem artifacts.
@param dhclient_cmd_path: Full path to the dhclient used.
@param interface: Name of the network interface on which to dhclient.
@param dhcp_log_func: A callable accepting the dhclient output and error
streams.
@return: A list of dicts of representing the dhcp leases parsed from the
dhclient.lease file or empty list.
z!Performing a dhcp discovery on %sz/run/dhclient.pidz/run/dhclient.leaseN�ip�link�set�dev�upT)�capturez-1z-vz-lfz-pfz-sfz /bin/true� g{�G�z�?)�maxwait�naplenz+dhclient did not produce expected files: %sz, c s s � | ] }t j�|�V qd S �N)�os�path�basename)�.0�fr r r � <genexpr>� s � z!dhcp_discovery.<locals>.<genexpr>�unknownFr i� r" z killing dhclient with pid=%szCdhclient(pid=%s, parentpid=%s) failed to daemonize after %s secondsg $@)r r �
contextlib�suppress�FileNotFoundErrorrA �remover r �wait_for_files�warning�join�ranger& r+ �int�
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get_proc_ppid�kill�signal�SIGKILL�time�sleep�errorr6 )�dhclient_cmd_path� interfacer �pid_filer/ �cmd�out�err�missing�ppid�
daemonized�_� pid_content�pidr r r r n sn
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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)r. � configobj� ConfigObjr )�contentr r r �networkd_parse_lease� s ri 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_DIRrA rB �isdir�listdirri r r& rN )�leases_d�ret�lfiler r r �networkd_load_leases� s
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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")
]
Python version of isc-dhclient's hooks:
/etc/dhcp/dhclient-exit-hooks.d/rfc3442-classless-routes
r c S s g | ]}|r|�qS r r )rD �tokr r r �
<listcomp> s z'parse_static_routes.<locals>.<listcomp>z[, .]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 rX )�cidr�required�remain�msg��rfc3442r r � _trunc_error s
��z)parse_static_routes.<locals>._trunc_errorr � �! � N�.r" r= � � � �0� � � � )r� r� r� z0.0.0.0zSParsed invalid net length "%s". Verify DHCP rfc3442-classless-static-routes value.z%s/%s) �rstripr# r* � enumeraterP rO r' rN r rX r- ) r� �tokens�
static_routesr� � current_idx�idxry �
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