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temp_utilsutil)find_fallback_nicget_devicelistget_ib_interface_hwaddrget_interface_macis_ib_interfacez/run/systemd/netif/leasesaN #!/bin/sh
log() {
echo "udhcpc[$PPID]" "$interface: $2"
}
[ -z "$1" ] && echo "Error: should be called from udhcpc" && exit 1
case $1 in
bound|renew)
cat < "$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: $1" >&2
exit 1
;;
esac
c @ s e Zd ZdZdS )NoDHCPLeaseErrorz'Raised when unable to get a DHCP lease.N)__name__
__module__ __qualname____doc__ r r /usr/lib/python3.6/dhcp.pyr A s r c @ s e Zd ZdZdS )InvalidDHCPLeaseFileErrorzRaised when parsing an empty or invalid dhclient.lease file.
Current uses are DataSourceAzure and DataSourceEc2 during ephemeral
boot to scrape metadata.
N)r r r r r r r r r E s r c @ s e Zd ZdZdS )NoDHCPLeaseInterfaceErrorz7Raised when unable to find a viable interface for DHCP.N)r r r r r r r r r M s r c @ s e Zd ZdZdS ) NoDHCPLeaseMissingDhclientErrorz$Raised when unable to find dhclient.N)r r r r r r r r r Q s r c @ s e Zd ZdZdS ) NoDHCPLeaseMissingUdhcpcErrorz)Raised when unable to find udhcpc client.N)r r r r r r r r r U s r c
C sZ xN| j D ]D}y| }tjd|j |S ttfk
rJ tjd|j Y qX qW t dS )zdistros set priority list, select based on this order which to use
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zDHCP client selected: %szDHCP client not found: %sN)Zdhcp_client_priorityLOGdebug client_namer r warning)distroclientZ dhcp_clientr r r select_dhcp_clientY s r c C sZ |dkr(t }|dkrDtjd t n |t krDtjd| t 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: A callable accepting the dhclient output and error
streams.
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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.)r r r r r
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r" c C s t tjt| ddS )zParse a systemd lease file content as in /run/systemd/netif/leases/
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# This is private data. Do not parse.
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found in lease_d.i
The top level key will be the filename, which is typically the ifindex.N) NETWORKD_LEASES_DIRospathisdirlistdirr% r load_filejoin)leases_dretZlfiler r r networkd_load_leases s r/ c C sF |d kr t }t|d}x*t|j D ]\}}|j| r$|| S q$W d S )N)r- )r& r/ sorteditemsget)Zkeynamer- ZleasesZ_ifindexdatar r r networkd_get_option_from_leases s
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zDhcpClient.clear_leases)dhcp_interfacec C s |j d| j|ddgd d S )Nstartr r7 )r8 )manage_servicer )r9 r@ r r r r
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lease_filereturnc C s t jdt j}g }tj| }t|dkr6tdj| xh|j|D ]Z}g }xB|j dD ]4}|j
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j| |S ) a7 Parse the given dhcp lease file returning all leases as dicts.
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@raises: InvalidDHCPLeaseFileError on empty of unparseable leasefile
content.
zlease {(?P.*?)}\nr z&Cannot parse empty dhcp lease file {0};"r6 zoption r7 z1Cannot parse dhcp lease file {0}. No leases found)recompileDOTALLr r+ lenr formatfindallsplitstripreplaceappendr# )rN Z lease_regexZ dhcp_leasesZ
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@param dhclient_cmd_path: Full path to the dhclient used.
@param interface: Name of the network interface on which to dhclient.
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error streams.
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z!Performing a dhcp discovery on %sz/run/dhclient.pidz/run/dhclient.leaseNz20:%s$ z0interface "%s" {send dhcp-client-identifier %s;}T) needs_exez-dhclient.confz3dhclient exited with code: %s stderr: %r stdout: %r g{Gz?)ZmaxwaitZnaplenz+dhclient did not produce expected files: %sz, c s s | ]}t jj|V qd S )N)r' r( basename).0fr r r I s z-IscDhclient.dhcp_discovery..unknownFr i r7 z killing dhclient with pid=%szCdhclient(pid=%s, parentpid=%s) failed to daemonize after %s secondsg $@)(r r
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f q@W |S )a
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")
]
Python version of isc-dhclient's hooks:
/etc/dhcp/dhclient-exit-hooks.d/rfc3442-classless-routes
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rR r zFound DHCP identifier %s)openrZ rY rV r r )rN fdr] ZwordsZdhcptokZlatest_addressr r r !parse_dhcp_server_from_lease_file s
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r k rH c @ s e Zd ZdZdd ZdS )DhcpcdZdhcpcdc C s t dd S )NzDhcpcd not yet implemented)r )rL r r r rM s zDhcpcd.__init__N)r r r r rM r r r r r s r c @ s" e Zd ZdZdd ZdddZdS )Udhcpcudhcpcc C s& t jd| _| js"tjd t d S )Nr z3Skip udhcpc configuration: No udhcpc command found.)r rJ udhcpc_pathr r r )rL r r r rM s
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error streams.
@return: A list of dicts of representing the dhcp leases parsed from
the udhcpc lease file.
z!Performing a dhcp discovery on %sT)r` z .lease.jsonN
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