#
# exception.py - general exception formatting and saving
#
# Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 Red Hat, Inc.
# All rights reserved.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see .
#
# Author(s): Matt Wilson
# Erik Troan
# Chris Lumens
#
from constants import *
from filer import *
from network import hasActiveNetDev
import isys
import sys
import os
import shutil
import signal
import traceback
import inspect
import iutil
import types
import bdb
from string import joinfields
from cPickle import Pickler
from flags import flags
import kickstart
import gettext
_ = lambda x: gettext.ldgettext("anaconda", x)
import logging
log = logging.getLogger("anaconda")
class AnacondaExceptionDump:
def __init__(self, type, value, stack):
self.type = type
self.value = value
# this isn't used, but it's an option if we want to leave the
# two instantiations of this class as they are instead of
# passing in a stack
if inspect.istraceback(stack):
stack = inspect.getinnerframes(stack)
self.stack = stack
self.tbFile = None
self._dumpHash = {}
# Reverse the order that tracebacks are printed so people will hopefully quit
# giving us the least useful part of the exception in bug reports.
def __str__(self):
lst = self.format_stack()
lst.reverse()
lst.insert(0, "anaconda %s exception report\n" % os.getenv("ANACONDAVERSION"))
lst.insert(1, 'Traceback (most recent call first):\n')
if self.type is not None and self.value is not None:
lst.extend(traceback.format_exception_only(self.type, self.value))
return joinfields(lst, "")
def format_stack(self):
frames = []
for (frame, file, lineno, func, ctx, idx) in self.stack:
if type(ctx) == type([]):
code = "".join(ctx)
else:
code = ctx
frames.append((file, lineno, func, code))
return traceback.format_list(frames)
# Create a string representation of a class and write it to fd. This
# method will recursively handle all attributes of the base given class.
def _dumpClass(self, instance, fd, level=0, parentkey="", skipList=[]):
# protect from loops
try:
if not self._dumpHash.has_key(instance):
self._dumpHash[instance] = None
else:
fd.write("Already dumped\n")
return
except TypeError:
fd.write("Cannot dump object\n")
return
if (instance.__class__.__dict__.has_key("__str__") or
instance.__class__.__dict__.has_key("__repr__")):
fd.write("%s\n" % (instance,))
return
fd.write("%s instance, containing members:\n" %
(instance.__class__.__name__))
pad = ' ' * ((level) * 2)
for key, value in instance.__dict__.items():
if key.startswith("_%s__" % instance.__class__.__name__):
continue
if parentkey != "":
curkey = parentkey + "." + key
else:
curkey = key
# Don't dump objects that are in our skip list, though ones that are
# None are probably okay.
if eval("instance.%s is not None" % key) and \
eval("id(instance.%s)" % key) in skipList:
continue
if type(value) == types.ListType:
fd.write("%s%s: [" % (pad, curkey))
first = 1
for item in value:
if not first:
fd.write(", ")
else:
first = 0
if type(item) == types.InstanceType:
self._dumpClass(item, fd, level + 1, skipList=skipList)
else:
fd.write("%s" % (item,))
fd.write("]\n")
elif type(value) == types.DictType:
fd.write("%s%s: {" % (pad, curkey))
first = 1
for k, v in value.items():
if not first:
fd.write(", ")
else:
first = 0
if type(k) == types.StringType:
fd.write("'%s': " % (k,))
else:
fd.write("%s: " % (k,))
if type(v) == types.InstanceType:
self._dumpClass(v, fd, level + 1, parentkey = curkey, skipList=skipList)
else:
fd.write("%s" % (v,))
fd.write("}\n")
elif type(value) == types.InstanceType:
fd.write("%s%s: " % (pad, curkey))
self._dumpClass(value, fd, level + 1, parentkey=curkey, skipList=skipList)
else:
fd.write("%s%s: %s\n" % (pad, curkey, value))
# Dump the python traceback, internal state, and several files to the given
# file descriptor.
def dump (self, fd, anaconda):
skipList = [ "anaconda.backend.ayum",
"anaconda.backend.dlpkgs",
"anaconda.id.accounts",
"anaconda.id.bootloader.password",
"anaconda.id.comps",
"anaconda.id.dispatch",
"anaconda.id.hdList",
"anaconda.id.ksdata",
"anaconda.id.instLanguage.font",
"anaconda.id.instLanguage.kbd",
"anaconda.id.instLanguage.info",
"anaconda.id.instLanguage.localeInfo",
"anaconda.id.instLanguage.nativeLangNames",
"anaconda.id.instLanguage.tz",
"anaconda.id.keyboard._mods._modelDict",
"anaconda.id.keyboard.modelDict",
"anaconda.id.storage.encryptionPassphrase",
"anaconda.id.rootPassword",
"anaconda.id.tmpData",
"anaconda.intf.icw.buff",
"anaconda.intf.icw.currentWindow.storage.encryptionPassphrase",
"anaconda.intf.icw.stockButtons",
"dispatch.sack.excludes",
]
idSkipList = []
# Skip any local variables that contain these words
localSkipList = [ "passphrase", "password" ]
# Catch attributes that do not exist at the time we do the exception dump
# and ignore them.
for k in skipList:
try:
eval("idSkipList.append(id(%s))" % k)
except:
pass
p = Pickler(fd)
fd.write(str(self))
if self.stack:
frame = self.stack[-1][0]
fd.write ("\nLocal variables in innermost frame:\n")
try:
for (key, value) in frame.f_locals.items():
loweredKey = key.lower()
if len(filter(lambda s: loweredKey.find(s) != -1, localSkipList)) > 0:
continue
fd.write ("%s: %s\n" % (key, value))
except:
pass
try:
fd.write("\n\n")
self._dumpClass(anaconda, fd, skipList=idSkipList)
except:
fd.write("\nException occurred during state dump:\n")
traceback.print_exc(None, fd)
for file in ("/tmp/syslog", "/tmp/anaconda.log",
"/tmp/lvmout", "/tmp/resize.out",
"/tmp/program.log", "/tmp/storage.log",
anaconda.rootPath + "/root/install.log",
anaconda.rootPath + "/root/upgrade.log"):
try:
f = open(file, 'r')
line = "\n\n%s:\n" % (file,)
while line:
fd.write(line)
line = f.readline()
f.close()
except IOError:
pass
except:
fd.write("\nException occurred during %s file copy:\n" % (file,))
traceback.print_exc(None, fd)
def hash(self):
import hashlib
s = ""
for (file, lineno, func, text) in [f[1:5] for f in self.stack]:
if type(text) == type([]):
text = "".join(text)
s += "%s %s %s\n" % (os.path.basename(file), func, text)
return hashlib.sha256(s).hexdigest()
def write(self, anaconda):
self.tbFile = "/tmp/anacdump.txt"
fd = open(self.tbFile, "w")
self.dump(fd, anaconda)
fd.close()
def scpAuthenticate(master, childpid, password):
while 1:
# Read up to password prompt. Propagate OSError exceptions, which
# can occur for anything that causes scp to immediately die (bad
# hostname, host down, etc.)
buf = os.read(master, 4096)
if buf.lower().find("password: ") != -1:
os.write(master, password+"\n")
# read the space and newline that get echoed back
os.read(master, 2)
break
while 1:
buf = ""
try:
buf = os.read(master, 4096)
except (OSError, EOFError):
break
(pid, childstatus) = os.waitpid (childpid, 0)
return childstatus
# Save the traceback to a remote system via SCP. Returns success or not.
def copyExceptionToRemote(intf, scpInfo):
import pty
(user, password, host, path) = scpInfo
if host.find(":") != -1:
(host, port) = host.split(":")
# Try to convert the port to an integer just as a check to see
# if it's a valid port number. If not, they'll get a chance to
# correct the information when scp fails.
try:
int(port)
portArgs = ["-P", port]
except ValueError:
portArgs = []
else:
portArgs = []
# Thanks to Will Woods for the scp control
# here and in scpAuthenticate.
# Fork ssh into its own pty
(childpid, master) = pty.fork()
if childpid < 0:
log.critical("Could not fork process to run scp")
return False
elif childpid == 0:
# child process - run scp
args = ["scp", "-oNumberOfPasswordPrompts=1",
"-oStrictHostKeyChecking=no"] + portArgs + \
["/tmp/anacdump.txt", "%s@%s:%s" % (user, host, path)]
os.execvp("scp", args)
# parent process
try:
childstatus = scpAuthenticate(master, childpid, password)
except OSError:
return False
os.close(master)
if os.WIFEXITED(childstatus) and os.WEXITSTATUS(childstatus) == 0:
return True
else:
return False
# Save the traceback to a removable storage device, such as a floppy disk
# or a usb/firewire drive. If there's no filesystem on the disk/partition,
# write a vfat one.
# Returns success or not.
def copyExceptionToDisk(anaconda, device):
# in test mode have save to disk option just copy to new name
if not flags.setupFilesystems:
try:
shutil.copyfile("/tmp/anacdump.txt", "/tmp/test-anacdump.txt")
except:
log.error("Failed to copy anacdump.txt to /tmp/test-anacdump.txt")
pass
anaconda.intf.__del__ ()
return True
try:
fd = os.open(device, os.O_RDONLY)
except:
return False
os.close(fd)
fstype = isys.readFSType(device)
if fstype == None:
fstype = 'vfat'
try:
isys.mount(device, "/tmp/crash", fstype)
except SystemError:
if fstype != 'vfat':
return False
cmd = "/usr/sbin/mkdosfs"
if os.access("/sbin/mkdosfs", os.X_OK):
cmd = "/sbin/mkdosfs"
iutil.execWithRedirect (cmd, [device], stdout = '/dev/tty5',
stderr = '/dev/tty5')
try:
isys.mount(device, "/tmp/crash", fstype)
except SystemError:
return False
# copy trace dump we wrote to local storage to disk
try:
shutil.copyfile("/tmp/anacdump.txt", "/tmp/crash/anacdump.txt")
except:
log.error("Failed to copy anacdump.txt to device %s" % device)
return False
isys.umount("/tmp/crash")
return True
def saveToBugzilla(anaconda, exn, dest):
import bugzilla, xmlrpclib
import product, rpmUtils
def withBugzillaDo(bz, fn):
try:
retval = fn(bz)
return retval
except CommunicationError, e:
msg = _("Your bug could not be filed due to the following error "
"when communicating with bugzilla:\n\n%s" % str(e))
except (TypeError, ValueError), e:
msg = _("Your bug could not be filed due to bad information in "
"the bug fields. This is most likely an error in "
"anaconda:\n\n%s" % str(e))
anaconda.intf.messageWindow(_("Unable To File Bug"), msg)
return None
filer = anaconda.id.instClass.bugFiler
if not filer.supportsFiling() or not filer.bugUrl:
anaconda.intf.messageWindow(_("Bug Filing Not Supported"),
_("Your distribution does not provide a "
"supported bug filing system, so you "
"cannot save your exception this way."))
return False
if dest[0].strip() == "" or dest[1].strip() == "" or dest[2].strip() == "":
anaconda.intf.messageWindow(_("Invalid Bug Information"),
_("Please provide a valid username, "
"password, and short bug description."))
return False
hash = exn.hash()
if not exn.tbFile:
exn.write(anaconda)
try:
cred = withBugzillaDo(filer, lambda b: b.login(dest[0], dest[1]))
except LoginError:
anaconda.intf.messageWindow(_("Unable To Login"),
_("There was an error logging into %s "
"using the provided username and "
"password.") % product.bugUrl)
return False
# Are there any existing bugs with this hash value? If so we will just
# add this traceback to the bug report and put the reporter on the CC
# list. Otherwise, we need to create a new bug.
wb = "anaconda_trace_hash:%s" % hash
buglist = withBugzillaDo(filer, lambda b: b.query({'status_whiteboard': wb,
'status_whiteboard_type':'allwordssubstr',
'bug_status': []}))
if buglist is None:
return False
if len(buglist) == 0:
bug = withBugzillaDo(filer, lambda b: b.createbug(product=filer.getproduct(product.productName),
component="anaconda",
version=filer.getversion(product.productVersion,
product.productName),
platform=rpmUtils.arch.getBaseArch(),
bug_severity="medium",
priority="medium",
op_sys="Linux",
bug_file_loc="http://",
summary=dest[2],
comment="The following was filed automatically by anaconda:\n%s" % str(exn),
status_whiteboard=wb))
if bug is None:
return False
withBugzillaDo(bug, lambda b: b.attachfile(exn.tbFile,
"Attached traceback automatically from anaconda.",
contenttype="text/plain", filename="anacdump.txt"))
# Tell the user we created a new bug for them and that they should
# go add a descriptive comment.
anaconda.intf.messageWindow(_("Bug Created"),
_("A new bug has been created with your traceback attached. "
"Please add additional information such as what you were doing "
"when you encountered the bug, screenshots, and whatever else "
"is appropriate to the following bug:\n\n%s/%s") % (bugzillaUrl, bug.id()),
type="custom", custom_icon="info",
custom_buttons=[_("_Exit installer")])
sys.exit(0)
else:
bug = buglist[0]
withBugzillaDo(bug, lambda b: b.attachfile(exn.tbFile,
"Attached traceback automatically from anaconda.",
contenttype="text/plain", filename="anacdump.txt"))
withBugzillaDo(bug, lambda b: b.addCC(dest[0]))
# Tell the user which bug they've been CC'd on and that they should
# go add a descriptive comment.
anaconda.intf.messageWindow(_("Bug Updated"),
_("A bug with your information already exists. Your account has "
"been added to the CC list and your traceback added as a "
"comment. Please add additional descriptive information to the "
"following bug:\n\n%s/%s") % (bugzillaUrl, bug.id()),
type="custom", custom_icon="info",
custom_buttons=[_("_Exit installer")])
sys.exit(0)
def runSaveDialog(anaconda, exn):
saveWin = anaconda.intf.saveExceptionWindow(anaconda, exn.tbFile)
if not saveWin:
anaconda.intf.__del__()
os.kill(os.getpid(), signal.SIGKILL)
while 1:
saveWin.run()
rc = saveWin.getrc()
if rc == EXN_OK:
if saveWin.saveToDisk():
device = saveWin.getDest()
cpSucceeded = copyExceptionToDisk(anaconda, device)
if cpSucceeded:
anaconda.intf.messageWindow(_("Dump Written"),
_("Your system's state has been successfully written to "
"the disk. The installer will now exit."),
type="custom", custom_icon="info",
custom_buttons=[_("_Exit installer")])
sys.exit(0)
else:
anaconda.intf.messageWindow(_("Dump Not Written"),
_("There was a problem writing the system state to the "
"disk."))
continue
elif saveWin.saveToLocal():
dest = saveWin.getDest()
try:
shutil.copyfile(exn.tbFile, "%s/InstallError.txt" %(dest,))
anaconda.intf.messageWindow(_("Dump Written"),
_("Your system's state has been successfully written to "
"the disk. The installer will now exit."),
type="custom", custom_icon="info",
custom_buttons=[_("_Exit installer")])
sys.exit(0)
except Exception, e:
log.error("Failed to copy %s to %s/anacdump.txt: %s" %(exn.tbFile, dest, e))
else:
anaconda.intf.messageWindow(_("Dump Not Written"),
_("There was a problem writing the system state to the "
"disk."))
continue
elif saveWin.saveToRemote():
if not hasActiveNetDev():
if not anaconda.intf.enableNetwork(anaconda):
anaconda.intf.messageWindow(_("No Network Available"),
_("Cannot save a bug report since there is no "
"active networking device available."))
continue
scpInfo = saveWin.getDest()
scpSucceeded = copyExceptionToRemote(anaconda.intf, scpInfo)
if scpSucceeded:
anaconda.intf.messageWindow(_("Dump Written"),
_("Your system's state has been successfully written to "
"the remote host. The installer will now exit."),
type="custom", custom_icon="info",
custom_buttons=[_("_Exit installer")])
sys.exit(0)
else:
anaconda.intf.messageWindow(_("Dump Not Written"),
_("There was a problem writing the system state to the "
"remote host."))
continue
else:
if not hasActiveNetDev():
if not anaconda.intf.enableNetwork(anaconda):
anaconda.intf.messageWindow(_("No Network Available"),
_("Cannot save a bug report since there is no "
"active networking device available."))
continue
if not saveToBugzilla(anaconda, exn, saveWin.getDest()):
continue
elif rc == EXN_CANCEL:
break
saveWin.pop()
def handleException(anaconda, (type, value, tb)):
if isinstance(value, bdb.BdbQuit):
sys.exit(1)
# restore original exception handler
sys.excepthook = sys.__excepthook__
# convert the traceback to a stack
stack = inspect.getinnerframes(tb)
# Save the exception file to local storage first.
exn = AnacondaExceptionDump(type, value, stack)
exn.write(anaconda)
text = str(exn)
# see if /mnt/sysimage is present and put exception there as well
if os.access("/mnt/sysimage/root", os.X_OK):
try:
shutil.copyfile("/tmp/anacdump.txt", "/mnt/sysimage/root/anacdump.txt")
except:
log.error("Failed to copy anacdump.txt to /mnt/sysimage/root")
pass
# run kickstart traceback scripts (if necessary)
try:
if anaconda.isKickstart:
kickstart.runTracebackScripts(anaconda)
except:
pass
mainWin = anaconda.intf.mainExceptionWindow(text, exn.tbFile)
if not mainWin:
anaconda.intf.__del__()
os.kill(os.getpid(), signal.SIGKILL)
while 1:
mainWin.run()
rc = mainWin.getrc()
if rc == EXN_OK:
anaconda.intf.__del__ ()
os.kill(os.getpid(), signal.SIGKILL)
elif rc == EXN_DEBUG:
anaconda.intf.__del__ ()
print(text)
pidfl = "/tmp/vncshell.pid"
if os.path.exists(pidfl) and os.path.isfile(pidfl):
pf = open(pidfl, "r")
for pid in pf.readlines():
if not int(pid) == os.getpid():
os.kill(int(pid), signal.SIGKILL)
pf.close()
if not flags.test:
os.open("/dev/console", os.O_RDWR) # reclaim stdin
os.dup2(0, 1) # reclaim stdout
os.dup2(0, 2) # reclaim stderr
# ^
# |
# +------ dup2 is magic, I tells ya!
# bring back the echo
import termios
si = sys.stdin.fileno()
attr = termios.tcgetattr(si)
attr[3] = attr[3] & termios.ECHO
termios.tcsetattr(si, termios.TCSADRAIN, attr)
print("\nEntering debugger...")
import pdb
pdb.post_mortem (tb)
os.kill(os.getpid(), signal.SIGKILL)
elif rc == EXN_SAVE:
runSaveDialog(anaconda, exn)