3 h>`l @sdZddlZddlZddlZddlmZddlmZdgZ y ej Z Wne k rddl Z ddl Z e jdZe jderdZ n^e jd erdZ nLe jd erd Z n:e jd erd Z n(e jderdZ ne jderdZ ndZ YnXGdddZdS)zAccess control for setroubleshoot. For now this is only used for determining which users are allowed to connect to the server: see UserServerAccess for more information.N) get_config) syslog_trace ServerAccessz^i\d86z^x86_64z^(ppc|powerpc)z ^(alpha|mips)z^sparc@z^parisci@c@sZeZdZdZddiddidZddZdd Zd d Zd d ZddZ ddZ ddZ dS)rzg Determine if a user should be given access to the server based on the configuration file. wildcardTF)ZclientZfix_cmdcCs2i|_x&ttjjD]}|j||j|<qWdS)N) privilegeslistrkeysinit_privilege)self privileger$/usr/lib/python3.6/access_control.py__init__LszServerAccess.__init__cCs"ddtdd|jdD}|S)NcSsg|] }|jqSr)strip).0namerrr Xsz/ServerAccess.init_privilege..accessz%s_users,)rsplit)rrZ cfg_namesrrrrWszServerAccess.init_privilegecCs(|tjk}|rdStjtjd|dS)NTzunknown access privilege (%s)F)rr syslogLOG_ERR)rrZvalidrrrvalid_privilege\s  zServerAccess.valid_privilegecCs.|j|sdStj|ds dSd|j|kS)NFr *)rrr )rrrrrunrestricted_privilegecs  z#ServerAccess.unrestricted_privilegecCs6|j|sdS|j|rdS||j|kr.dSdSdS)z Determine if the given user name is allowed access. Returns True if access should be given, False if not. FTN)rrr )rruserrrr user_allowedks  zServerAccess.user_allowedc CsX|j|sdS|j|rdSyddl}|j|}Wntk rFdSX|j||dS)z Determine if the given uid is allowed access. No error is returned if the uid is invalid (False is returned). Returns True if access should be given, False if not. FTrN)rrpwdgetpwuidKeyErrorr!)rruidr"Z pwd_entryrrr uid_allowedzs  zServerAccess.uid_allowedc Csd}}}y|j}|tjkr&||fSWntk r<YnXd}tj|}yJ|jtjt|}tj ||\}}}|dkr|d}|dkrd}|dkrd}WnTt k r} z8d}}}ddl } t | j tjtjd| WYdd} ~ XnX||fS) zObtain the effective user and group IDs of the process on the other end of a socket. SO_PEERCRED is used so the information returned is generally trustworthy (though root processes can impersonate any uid/gid).NZIIIrzget_credentials(): %sr(r()familySocketZAF_UNIXAttributeErrorstructcalcsizeZ getsockoptZ SOL_SOCKET SO_PEERCREDunpack Exception tracebackr format_excrr) rZsockpidr%gidr)Z format_ucredZ sizeof_ucredZucreder1rrrget_credentialss0      $zServerAccess.get_credentialsN) __name__ __module__ __qualname____doc__r rrrrr!r&r6rrrrrBs  )r:r,Zsocketr*rZsetroubleshoot.configrZsetroubleshoot.utilr__all__r.r+osreunamemachinesearchrrrrrs4