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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: $1" >&2
exit 1
;;
esac
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@param dhcp_log_func: Callable accepting the interface and client's
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returned.
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parse classless static routes from string
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parse rfc3442 format and return a list containing tuple of strings.
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gateway for a parsed static route. It can parse two formats of
rfc3442, one from dhcpcd and one from dhclient (isc).
@param rfc3442: string in rfc3442 format (isc or dhcpd)
@returns: list of tuple(str, str) for all valid parsed routes until the
first parsing error.
e.g.:
sr=parse_static_routes( "32,169,254,169,254,130,56,248,255,0,130,56,240,1")
sr=[
("169.254.169.254/32", "130.56.248.255"), ("0.0.0.0/0", "130.56.240.1")
]
sr2 = parse_static_routes( "24.191.168.128 192.168.128.1,0 192.168.128.1")
sr2 = [
("191.168.128.0/24", "192.168.128.1"), ("0.0.0.0/0", "192.168.128.1")
]
# unknown-121 option format
sr3 = parse_static_routes( "0:a:0:0:1:20:a8:3f:81:10:a:0:0:1:20:a9:fe:a9:fe:a:0:0:1")
sr3 = [
("0.0.0.0/0", "10.0.0.1"),
("168.63.129.16/32", "10.0.0.1"),
("169.254.169.254/32", "10.0.0.1"),
]
Python version of isc-dhclient's hooks:
/etc/dhcp/dhclient-exit-hooks.d/rfc3442-classless-routes
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||�}tj � |�}||krH|}|}q*|rO| S q dS )z�Get the latest lease file from a distro-managed dhclient
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Ng �) �dhclient_lease_directory�dhclient_lease_file_regex�DHCLIENT_FALLBACK_LEASE_DIR� DHCLIENT_FALLBACK_LEASE_REGEXr/ r2 r� rx �searchr0 r4 �getmtime) r$ � 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
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dhcp request
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@return: dict of lease options representing the most recent dhcp lease
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r� r� z
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�����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
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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
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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 | ]
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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
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content.
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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
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the udhcpc lease file.
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@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.
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