3
\me-$ @ s d dl Z d dlZd dlZd dlZd dlZd dlZd dlZd dlZd dlm Z d dl
m Z m Z dZ
dZejeZG dd de jdZG d d
d
eZegZdd d Zd
d ZdddZdd Zdd Zdd ZdddZ dS ) N)util)get_devicelistread_sys_net_safez#/run/initramfs/open-iscsi.interfacedisabledc @ s8 e Zd ZdZejedddZejedddZ dS ) InitramfsNetworkConfigSourcezBABC for net config sources that read config written by initramfses)returnc C s dS )zAIs this initramfs config source applicable to the current system?N )selfr r /usr/lib/python3.6/cmdline.py
is_applicable s z*InitramfsNetworkConfigSource.is_applicablec C s dS )z;Render a v1 network config from the initramfs configurationNr )r r r r
render_config" s z*InitramfsNetworkConfigSource.render_configN)
__name__
__module__ __qualname____doc__abcabstractmethodboolr dictr r r r r
r s
r ) metaclassc @ s6 e Zd ZdZd
ddZedddZeddd ZdS ) KlibcNetworkConfigSourcezInitramfsNetworkConfigSource for klibc initramfs (i.e. Debian/Ubuntu)
Has three parameters, but they are intended to make testing simpler, _not_
for use in production code. (This is indicated by the prepended
underscores.)
Nc C st || _ || _|| _| j d kr$t | _ | jd kr8tj | _| jd krpi | _x&t D ] }t|d}|rP|| j|< qPW d S )Naddress)_files
_mac_addrs_cmdline_get_klibc_net_cfg_filesr get_cmdliner r )r r r r kZmac_addrr r r
__init__/ s
z!KlibcNetworkConfigSource.__init__)r c C s> | j r:x"tj| jD ]}|jdrdS qW tjjtr:dS dS )aD
Return whether this system has klibc initramfs network config or not
Will return True if:
(a) klibc files exist in /run, AND
(b) either:
(i) ip= or ip6= are on the kernel cmdline, OR
(ii) an open-iscsi interface file is present in the system
ip=ip6=TF)r r ) r shlexsplitr
startswithospathexists_OPEN_ISCSI_INTERFACE_FILE)r itemr r r
r A s
z&KlibcNetworkConfigSource.is_applicablec C s t | j| jdS )N)files mac_addrs)config_from_klibc_net_cfgr r )r r r r
r T s z&KlibcNetworkConfigSource.render_config)NNN) r
r r r r r r r r r r r r
r ' s
r c C s |dkr i }t j| }y d|kr(|d n|d }W n, tk
r^ } ztd|W Y dd}~X nX |jd|jd}|s|jdrd}nd }|d!krtd | d |g d
}||kr|| |d< x,d"D ]"}|d |krq|j|d |}|d k rd}|dd} |dkr ||d | d< x0d#D ](}
||
|kr"|||
| |
j < q"W g } xDd$D ]<} |j|| }
|
rXt|
jdrX| j||| qXW | r| | d < |jd }|rd |kr|j d | d < n |j | d < |d j| qW ||fS )%a Convert a klibc written shell content file to a 'config' entry
When ip= is seen on the kernel command line in debian initramfs
and networking is brought up, ipconfig will populate
/run/net-.cfg.
The files are shell style syntax, and examples are in the tests
provided here. There is no good documentation on this unfortunately.
DEVICE= is expected/required and PROTO should indicate if
this is 'none' (static) or 'dhcp' or 'dhcp6' (LP: #1621507).
note that IPV6PROTO is also written by newer code to address the
possibility of both ipv4 and ipv6 getting addresses.
Full syntax is documented at:
https://git.kernel.org/pub/scm/libs/klibc/klibc.git/plain/usr/kinit/ipconfig/README.ipconfig
NZDEVICEZDEVICE6z&no 'DEVICE' or 'DEVICE6' entry in dataZPROTOZ IPV6PROTOfilenamedhcpnonedhcp6z Unexpected value for PROTO: %sZphysical)typenamesubnets mac_addressIPV4IPV6ZADDRZstaticZmanual)r0 Zcontrolr NETMASK BROADCASTGATEWAYDNS0DNS1z:.0Zdns_nameserversZ DOMAINSEARCH,Z
dns_searchr2 )r. r- r/ )r4 r5 )r6 r7 r8 )r9 r: )
r Zload_shell_contentKeyError
ValueErrorgetlowerlenstripappendr" )Zcontentr* datar1 eprotoZifaceZpreZ cur_protoZsubnetkeyZdnsZnskeynssearchr r r
_klibc_to_config_entry^ sZ
rI c C s t j dt j d S )Nz/run/net-*.confz/run/net6-*.conf)globr r r r
r s r c C s | d krt } g }i }x| D ]}ttj||d\}}||kr|| d }|jd|jdkrtdj|dj|| d |jd|jdd|d j|d || d j | q |g|d ||< |j | q W |d
d S ) N)r* entryr3 zedevice '{name}' was defined multiple times ({files}) but had differing mac addresses: {old} -> {new}. r) )r1 r) oldnewr2 )r) rK )configversion)
r rI r Z load_filer> r= formatjoinextendrB )r) r* ZentriesnamesZcfg_filer1 rK prevr r r
r+ s*
r+ c C s( x"t D ]} | }|j sq|j S W dS )a
Return v1 network config for initramfs-configured networking (or None)
This will consider each _INITRAMFS_CONFIG_SOURCES entry in turn, and return
v1 network configuration for the first one that is applicable. If none are
applicable, return None.
N)_INITRAMFS_CONFIG_SOURCESr r )Zsrc_clsZ
cfg_sourcer r r
read_initramfs_config s
rX c C s^ t j| J}d }z0ytjd|d}|j S tk
r< | S X W d |rN|j X W d Q R X d S )Nrb)modeZfileobj)ioBytesIOgzipZGzipFilereadIOErrorclose)blobZiobufZgzfpr r r
_decomp_gzip s
rb c C s< yt j| }W n$ ttfk
r2 tjd| dS X t|S )zDecode a string base64 encoding, if gzipped, uncompress as well
:return: decompressed unencoded string of the data or empty string on
unencoded data.
z`Expected base64 encoded kernel commandline parameter network-config. Ignoring network-config=%s. )base64Z b64decode TypeErrorr= LOGerrorrb )rC ra r r r
_b64dgz s rh c C sn | d krt j } d| krjd }x*| j D ] }|jdr&|jddd }q&W |rj|tkr\ddiS t jt|S d S )Nznetwork-config==rO rP r )r r r" r# &KERNEL_CMDLINE_NETWORK_CONFIG_DISABLEDZ load_yamlrh )ZcmdlineZdata64tokr r r
read_kernel_cmdline_config s
rl )N)NN)N) r rd rJ r] r[ Zloggingr$ r! Z cloudinitr Z
cloudinit.netr r r' rj Z getLoggerr
rf ABCMetar r rW rI r r+ rX rb rh rl r r r r
s,
4
]