U Adp.@sddlZddlZddlZddlZddlZddlZddlmZddlZddl m Z m Z ddl m Z mZeeZdZGdddeZGdd d eZGd d d eZGd d d eZdddZddZdddZddZdddZdddZddZdS) N)StringIO)subputil)find_fallback_nicget_devicelistz/run/systemd/netif/leasesc@seZdZdZdS)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.pyrsrc@seZdZdZdS)InvalidDHCPLeaseFileErrorzRaised when parsing an empty or invalid dhclient.lease file. Current uses are DataSourceAzure and DataSourceEc2 during ephemeral boot to scrape metadata. Nrr r r rrsrc@seZdZdZdS)NoDHCPLeaseInterfaceErrorz7Raised when unable to find a viable interface for DHCP.Nrr r r rr%src@seZdZdZdS)NoDHCPLeaseMissingDhclientErrorz$Raised when unable to find dhclient.Nrr r r rr)srcCsn|dkr(t}|dkrDtdtn|tkrDtd|ttd}|sbtdtt|||S)aJPerform 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.Zdhclientz7Skip dhclient configuration: No dhclient command found.) rLOGdebugrrrZwhichrdhcp_discovery)Znic dhcp_log_funcZtmp_dirZ dhclient_pathr r rmaybe_perform_dhcp_discovery-s     rcCstdtj}g}t|}t|dkr6td|||D]V}g}| dD]4}| dd dd}|stqR| | dd qR| t |q@|std ||S) aParse 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.*?)}\nrz&Cannot parse empty dhcp lease file {0};"zoption  z1Cannot parse dhcp lease file {0}. No leases found)recompileDOTALLr load_filelenrformatfindallsplitstripreplaceappenddict) lease_fileZ lease_regexZ dhcp_leasesZ lease_contentZleaseZ lease_optionsliner r rparse_dhcp_lease_fileLs,   r*c Csvtd|d}d}ttt|t|W5QRXtjdddd|dgd d |d d d |d||ddg }tj|d d \}}tj ||gddd}|rt dd dd|DgSd} d} t ddD]v} t |} z t| } Wntk rYn:Xt| } | dkr8td| t| tjd } qDtdq| sZtd| | d|d k rn|||t|S)!aRun 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.leaseZiplinksetZdevZupT)Zcapturez-1z-vz-lfz-pfz-sfz /bin/trueg{Gz?)ZmaxwaitZnaplenz+dhclient did not produce expected files: %sz, css|]}tj|VqdS)N)ospathbasename).0fr r r sz!dhcp_discovery..unknownFrirzkilling dhclient with pid=%szCdhclient(pid=%s, parentpid=%s) failed to daemonize after %s secondsg$@N)rr contextlibsuppressFileNotFoundErrorr.removerrZwait_for_filesZwarningjoinrangerr$int ValueErrorZ get_proc_ppidkillsignalSIGKILLtimesleeperrorr*)Zdhclient_cmd_pathZ interfacerZpid_filer(cmdouterrZmissingZppidZ daemonized_Z pid_contentpidr r rrnsn            rcCsttjt|ddS)zParse 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)Z list_values)r' configobjZ ConfigObjr)Zcontentr r rnetworkd_parse_leasesrIcCsP|dkr t}i}tj|s |St|D] }tttj||||<q*|S)zReturn 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_DIRr.r/isdirlistdirrIrrr9)leases_dZretZlfiler r rnetworkd_load_leasess  rNcCsF|dkr t}t|d}t|D]\}}||r"||Sq"dS)N)rM)rJrNsorteditemsget)ZkeynamerMZleasesZ_ifindexdatar r rnetworkd_get_option_from_leasess  rSc s.dddtdD}g}fdd}d}t|D]\}}||krPq sz'parse_static_routes..z[, .]csd|||f}t|dS)NzRFC3442 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)rrB)ZcidrZrequiredZremainmsgrfc3442r r _trunc_errors  z)parse_static_routes.._trunc_errorr! N.rr-0z0.0.0.0zSParsed invalid net length "%s". Verify DHCP rfc3442-classless-static-routes value.z%s/%s) rstriprr# enumerater;r:r r9rrBr&) rXtokensZ static_routesrYZ current_idxidxrTZ net_lengthZreq_toksZ net_addressZgatewayr rWrparse_static_routessp     " $   rj)NNN)N)N)N)r5Zloggingr.rr>r@iorrHZ cloudinitrrZ cloudinit.netrrZ getLoggerr rrJ Exceptionrrrrrr*rrIrNrSrjr r r rs,   " [