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glsa-check
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2006-05-08
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#!/usr/bin/python
# $Header$
# This program is licensed under the GPL, version 2
import os,string,sys
sys.path.insert(0, "/usr/lib/gentoolkit/pym")
sys.path.insert(0, "/usr/lib/portage/pym")
from output import *
from getopt import getopt,GetoptError
__program__ = "glsa-check"
__author__ = "Marius Mauch <genone@gentoo.org>"
__version__ = "0.6"
optionmap = [
["-l", "--list", "list all unapplied GLSA"],
["-d", "--dump", "--print", "show all information about the given GLSA"],
["-t", "--test", "test if this system is affected by the given GLSA"],
["-p", "--pretend", "show the necessary commands to apply this GLSA"],
["-f", "--fix", "try to auto-apply this GLSA (experimental)"],
["-i", "--inject", "inject the given GLSA into the checkfile"],
["-n", "--nocolor", "disable colors (option)"],
["-h", "--help", "show this help message"],
["-V", "--version", "some information about this tool"],
["-v", "--verbose", "print more information (option)"],
["-c", "--cve", "show CAN ids in listing mode (option)"],
]
# print a warning as this is beta code (but proven by now, so no more warning)
#sys.stderr.write("WARNING: This tool is completely new and not very tested, so it should not be\n")
#sys.stderr.write("used on production systems. It's mainly a test tool for the new GLSA release\n")
#sys.stderr.write("and distribution system, it's functionality will later be merged into emerge\n")
#sys.stderr.write("and equery.\n")
#sys.stderr.write("Please read http://www.gentoo.org/proj/en/portage/glsa-integration.xml\n")
#sys.stderr.write("before using this tool AND before reporting a bug.\n\n")
# option parsing
args = []
params = []
try:
args, params = getopt(sys.argv[1:], "dplfchinvVtc", \
["dump", "print", "list", "pretend", "fix", "inject", "help", "info", "version", "test", "nocolor", "cve"])
args = [a for a,b in args]
for option in ["--nocolor", "-n"]:
if option in args:
nocolor()
args.remove(option)
verbose = False
for option in ["--verbose", "-v"]:
if option in args:
verbose = True
args.remove(option)
list_cve = False
for option in ["--cve", "-c"]:
if option in args:
list_cve = True
args.remove(option)
# sanity checking
if len(args) <= 0:
sys.stderr.write("no option given: what should I do ?\n")
mode="help"
elif len(args) > 1:
sys.stderr.write("please use only one command per call\n")
mode = "help"
else:
# in what mode are we ?
args = args[0]
for m in optionmap:
if args in [o for o in m[:-1]]:
mode = m[1][2:]
except GetoptError, e:
sys.stderr.write("unknown option given: ")
sys.stderr.write(str(e)+"\n")
mode = "help"
# we need a set of glsa for most operation modes
if len(params) <= 0 and mode in ["fix", "test", "pretend", "dump", "inject"]:
sys.stderr.write("\nno GLSA given, so we'll do nothing for now. \n")
sys.stderr.write("If you want to run on all GLSA please tell me so \n")
sys.stderr.write("(specify \"all\" as parameter)\n\n")
mode = "help"
elif len(params) <= 0 and mode == "list":
params.append("new")
# show help message
if mode == "help":
sys.stderr.write("\nSyntax: glsa-check <option> [glsa-list]\n\n")
for m in optionmap:
sys.stderr.write(m[0] + "\t" + m[1] + " \t: " + m[-1] + "\n")
for o in m[2:-1]:
sys.stderr.write("\t" + o + "\n")
sys.stderr.write("\nglsa-list can contain an arbitrary number of GLSA ids, \n")
sys.stderr.write("filenames containing GLSAs or the special identifiers \n")
sys.stderr.write("'all', 'new' and 'affected'\n")
sys.exit(1)
# we need root priviledges for write access
if mode in ["fix", "inject"] and os.geteuid() != 0:
sys.stderr.write("\nThis tool needs root access to "+mode+" this GLSA\n\n")
sys.exit(2)
# show version and copyright information
if mode == "version":
sys.stderr.write("\n"+ __program__ + ", version " + __version__ + "\n")
sys.stderr.write("Author: " + __author__ + "\n")
sys.stderr.write("This program is licensed under the GPL, version 2\n\n")
sys.exit(0)
# delay this for speed increase
from glsa import *
glsaconfig = checkconfig(portage.config(clone=portage.settings))
# Check that we really have a glsa dir to work on
if not (os.path.exists(glsaconfig["GLSA_DIR"]) and os.path.isdir(glsaconfig["GLSA_DIR"])):
sys.stderr.write(red("ERROR")+": GLSA_DIR %s doesn't exist. Please fix this.\n" % glsaconfig["GLSA_DIR"])
sys.exit(1)
# build glsa lists
completelist = get_glsa_list(glsaconfig["GLSA_DIR"], glsaconfig)
if os.access(glsaconfig["CHECKFILE"], os.R_OK):
checklist = [line.strip() for line in open(glsaconfig["CHECKFILE"], "r").readlines()]
else:
checklist = []
todolist = [e for e in completelist if e not in checklist]
glsalist = []
if "new" in params:
glsalist = todolist
params.remove("new")
if "all" in params:
glsalist = completelist
params.remove("all")
if "affected" in params:
# maybe this should be todolist instead
for x in completelist:
try:
myglsa = Glsa(x, glsaconfig)
except (GlsaTypeException, GlsaFormatException), e:
if verbose:
sys.stderr.write(("invalid GLSA: %s (error message was: %s)\n" % (x, e)))
continue
if myglsa.isVulnerable():
glsalist.append(x)
params.remove("affected")
# remove invalid parameters
for p in params[:]:
if not (p in completelist or os.path.exists(p)):
sys.stderr.write(("(removing %s from parameter list as it isn't a valid GLSA specification)\n" % p))
params.remove(p)
glsalist.extend([g for g in params if g not in glsalist])
# list short information for given or new GLSA
if mode == "list":
sys.stderr.write(white("[A]")+" means this GLSA was already applied,\n")
sys.stderr.write(green("[U]")+" means the system is not affected and\n")
sys.stderr.write(red("[N]")+" indicates that the system might be affected.\n\n")
for myid in glsalist:
try:
myglsa = Glsa(myid, glsaconfig)
except (GlsaTypeException, GlsaFormatException), e:
if verbose:
sys.stderr.write(("invalid GLSA: %s (error message was: %s)\n" % (myid, e)))
continue
if myglsa.isApplied():
status = "[A]"
color = white
elif myglsa.isVulnerable():
status = "[N]"
color = red
else:
status = "[U]"
color = green
sys.stdout.write(color(myglsa.nr) + " " + color(status) + " " + myglsa.title + " (")
for pkg in myglsa.packages.keys()[:3]:
sys.stdout.write(" " + pkg + " ")
if len(myglsa.packages) > 3:
sys.stdout.write("... ")
sys.stdout.write(")")
if list_cve:
sys.stdout.write(" "+(",".join([r[:13] for r in myglsa.references if r[:4] == "CAN-"])))
sys.stdout.write("\n")
sys.exit(0)
# dump, fix, inject and fix are nearly the same code, only the glsa method call differs
if mode in ["dump", "fix", "inject", "pretend"]:
for myid in glsalist:
try:
myglsa = Glsa(myid, glsaconfig)
except (GlsaTypeException, GlsaFormatException), e:
if verbose:
sys.stderr.write(("invalid GLSA: %s (error message was: %s)\n" % (myid, e)))
continue
if mode == "dump":
myglsa.dump()
elif mode == "fix":
sys.stdout.write("fixing "+myid+"\n")
mergelist = myglsa.getMergeList()
for pkg in mergelist:
sys.stdout.write(">>> merging "+pkg+"\n")
# using emerge for the actual merging as it contains the dependency
# code and we want to be consistent in behaviour. Also this functionality
# will be integrated in emerge later, so it shouldn't hurt much.
emergecmd = "emerge --oneshot " + glsaconfig["EMERGE_OPTS"] + " =" + pkg
if verbose:
sys.stderr.write(emergecmd+"\n")
exitcode = os.system(emergecmd)
if exitcode:
sys.exit(exitcode)
myglsa.inject()
elif mode == "pretend":
sys.stdout.write("Checking GLSA "+myid+"\n")
mergelist = myglsa.getMergeList()
if mergelist:
sys.stdout.write("The following updates will be performed for this GLSA:\n")
for pkg in mergelist:
# we simplify a bit here
oldver = portage.db["/"]["vartree"].dbapi.match(portage.dep_getkey(pkg))[-1]
oldver = oldver[len(portage.dep_getkey(oldver))+1:]
sys.stdout.write(" " + pkg + " (" + oldver + ")\n")
else:
sys.stdout.write("Nothing to do for this GLSA\n")
elif mode == "inject":
sys.stdout.write("injecting " + myid + "\n")
myglsa.inject()
sys.stdout.write("\n")
sys.exit(0)
# test is a bit different as Glsa.test() produces no output
if mode == "test":
outputlist = []
for myid in glsalist:
try:
myglsa = Glsa(myid, glsaconfig)
except (GlsaTypeException, GlsaFormatException), e:
if verbose:
sys.stderr.write(("invalid GLSA: %s (error message was: %s)\n" % (myid, e)))
continue
if myglsa.isVulnerable():
outputlist.append(myglsa.nr)
if len(outputlist) > 0:
sys.stderr.write("This system is affected by the following GLSAs:\n")
for g in outputlist:
sys.stdout.write(g)
if verbose:
sys.stdout.write(" ( " + myglsa.title + " )\n")
else:
sys.stdout.write("\n")
else:
sys.stderr.write("This system is not affected by any of the listed GLSAs\n")
sys.exit(0)
# something wrong here, all valid paths are covered with sys.exit()
sys.stderr.write("nothing more to do\n")
sys.exit(2)