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import os,sys
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import commands
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import traceback
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import time
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import re
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from ProdCommon.BossLite.Common.System import executeCommand
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class Proxy:
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"""
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basic class to handle user Token
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"""
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def __init__( self, **args ):
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self.timeout = args.get( "timeout", None )
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self.myproxyServer = args.get( "myProxySvr", '')
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self.serverDN = args.get( "serverDN", '')
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self.shareDir = args.get( "shareDir", '')
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self.userName = args.get( "userName", '')
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self.debug = args.get("debug",False)
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self.args = args
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def ExecuteCommand( self, command ):
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"""
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_ExecuteCommand_
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Util it execute the command provided in a popen object with a timeout
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"""
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return executeCommand( command, self.timeout )
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def getUserProxy(self):
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"""
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"""
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try:
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proxy = os.path.expandvars('$X509_USER_PROXY')
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except Exception,ex:
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msg = ('Error %s in getUserProxy search\n' %str(ex))
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if self.debug : msg += traceback.format_exc()
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raise Exception(msg)
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return proxy.strip()
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def getSubject(self, proxy = None):
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"""
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"""
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subject = None
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if proxy == None: proxy=self.getUserProxy()
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cmd = 'openssl x509 -in '+proxy+' -subject -noout'
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out, ret = self.ExecuteCommand(cmd)
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if ret != 0 :
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msg = "Error while checking proxy subject for %s"%proxy
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raise Exception(msg)
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lines = out.split('\n')[0]
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return subject.strip()
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def getUserName(self, proxy = None ):
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"""
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"""
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uName = None
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if proxy == None: proxy=self.getUserProxy()
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cmd = "voms-proxy-info -file "+proxy+" -subject"
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out, ret = self.ExecuteCommand(cmd)
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if ret != 0 :
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msg = "Error while extracting User Name from proxy %s"%proxy
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raise Exception(msg)
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emelments = out.split('/')
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uName = elements[-1:][0].split('CN=')[1]
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return uName.strip()
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def checkCredential(self, proxy=None, Time=10):
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"""
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Function to check the Globus proxy.
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"""
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valid = True
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if proxy == None: proxy=self.getUserProxy()
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minTimeLeft=int(Time)*3600 # in seconds
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cmd = 'voms-proxy-info -file '+proxy+' -timeleft 2>/dev/null'
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timeLeftLocal, ret = self.ExecuteCommand(cmd)
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if ret != 0 and ret != 1:
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msg = "Error while checking proxy timeleft for %s"%proxy
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raise Exception(msg)
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## if no valid proxy
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if not timeLeftLocal :
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valid = False
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elif int(timeLeftLocal)<minTimeLeft :
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valid = False
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return valid
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def renewCredential( self, proxy=None ):
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"""
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"""
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if proxy == None: proxy=self.getUserProxy()
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# check
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if not self.checkCredential():
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# ask for proxy delegation
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# using myproxy
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pass
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return
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def checkAttribute( self, proxy=None, vo='cms', group=None, role=None):
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"""
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"""
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valid = True
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if proxy == None: proxy=self.getUserProxy()
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## check first attribute
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cmd = 'export X509_USER_PROXY=%s; voms-proxy-info -fqan 2>/dev/null | head -1'%proxy
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reg="/%s/"%vo
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if group:
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reg+=group
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if role:
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reg+="/Role=%s"%role
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att, ret = self.ExecuteCommand(cmd)
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if ret != 0 :
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msg = "Error while checking proxy timeleft for %s"%proxy
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raise Exception(msg)
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## you always have at least /cms/Role=NULL/Capability=NULL
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if not re.compile(r"^"+reg).search(att):
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if self.debug: print "\tWrong VO group/role.\n"
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valid = False
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return valid
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def ManualRenewCredential( self, proxy=None, vo='cms', group=None, role=None ):
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"""
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"""
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cmd = 'voms-proxy-init -voms %s'%vo
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if group:
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cmd += ':/'+vo+'/'+group
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if role:
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cmd += '/role='+role
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cmd += ' -valid 192:00'
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print cmd
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try:
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out = os.system(cmd)
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if (out>0): raise Exception("Unable to create a valid proxy!\n")
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except:
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msg = "Unable to create a valid proxy!\n"
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raise Exception(msg)
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def checkMyProxy( self , proxy=None, Time=4 ):
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"""
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"""
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if proxy == None: proxy=self.getUserProxy()
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## check the myproxy server
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valid = True
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#cmd = 'export X509_USER_PROXY=%s; myproxy-info -d -s %s 2>/dev/null'%(proxy,self.myproxyServer)
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cmd = 'myproxy-info -d -s %s 2>/dev/null'%(self.myproxyServer)
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out, ret = self.ExecuteCommand(cmd)
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if ret != 0 and ret != 1 :
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msg = "Error while checking myproxy timeleft for %s"%proxy
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raise Exception(msg)
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if not out:
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if self.debug: print '\tNo credential delegated to myproxy server %s will do now'%self.myproxyServer
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valid = False
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else:
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## minimum time: 5 days
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minTime = int(Time) * 24 * 3600
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## regex to extract the right information
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myproxyRE = re.compile("timeleft: (?P<hours>[\\d]*):(?P<minutes>[\\d]*):(?P<seconds>[\\d]*)")
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for row in out.split("\n"):
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g = myproxyRE.search(row)
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if g:
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hours = g.group("hours")
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minutes = g.group("minutes")
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seconds = g.group("seconds")
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timeleft = int(hours)*3600 + int(minutes)*60 + int(seconds)
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if timeleft < minTime:
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if self.debug: print '\tYour proxy will expire in:\n\t%s hours %s minutes %s seconds\n'%(hours,minutes,seconds)
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valid = False
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return valid
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def ManualRenewMyProxy( self ):
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"""
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"""
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cmd = 'myproxy-init -d -n -s %s'%self.myproxyServer
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out = os.system(cmd)
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if (out>0):
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raise Exception("Unable to delegate the proxy to myproxyserver %s"%self.myproxyServer+" !\n")
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return
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def logonProxy( self ):
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"""
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To be implemented
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"""
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#
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return
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