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Don't run clean_up() by means of atexit, but use a plain finally clause in the

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main archive() function.  This is simpler, and it works better with the
testsuite calling archive() directly, where the atexit handler isn't triggered.
This commit is contained in:
Nikolaus Schulz 2006-10-29 03:10:45 +00:00
parent 2dbd3c1940
commit 99cfab1f4e
1 changed files with 40 additions and 39 deletions
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79
archivemail.py
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@ -48,11 +48,10 @@ def check_python_version():
print too_old_error print too_old_error
sys.exit(1) sys.exit(1)
# define & run this early because 'atexit' requires Python >= 2.0 # define & run this early
# (IMAP over SSL requires Python >= 2.3) # (IMAP over SSL requires Python >= 2.3)
check_python_version() check_python_version()
import atexit
import fcntl import fcntl
import getopt import getopt
import gzip import gzip
@ -1076,47 +1075,50 @@ def archive(mailbox_name):
vprint("changing effective user id to: %d" % mailbox_user) vprint("changing effective user id to: %d" % mailbox_user)
os.seteuid(mailbox_user) os.seteuid(mailbox_user)
# create a temporary directory for us to work in securely
old_temp_dir = tempfile.tempdir old_temp_dir = tempfile.tempdir
tempfile.tempdir = None try:
new_temp_dir = tempfile.mkdtemp('archivemail') # create a temporary directory for us to work in securely
assert(new_temp_dir) tempfile.tempdir = None
_stale.temp_dir = new_temp_dir new_temp_dir = tempfile.mkdtemp('archivemail')
tempfile.tempdir = new_temp_dir assert(new_temp_dir)
vprint("set tempfile directory to '%s'" % new_temp_dir) _stale.temp_dir = new_temp_dir
tempfile.tempdir = new_temp_dir
vprint("set tempfile directory to '%s'" % new_temp_dir)
if os.path.islink(mailbox_name): if os.path.islink(mailbox_name):
unexpected_error("'%s' is a symbolic link -- I feel nervous!" % unexpected_error("'%s' is a symbolic link -- I feel nervous!" %
mailbox_name) mailbox_name)
if imap_scheme == 'imap' or imap_scheme == 'imaps': if imap_scheme == 'imap' or imap_scheme == 'imaps':
vprint("guessing mailbox is of type: imap(s)") vprint("guessing mailbox is of type: imap(s)")
_archive_imap(mailbox_name, final_archive_name) _archive_imap(mailbox_name, final_archive_name)
elif os.path.isfile(mailbox_name): elif os.path.isfile(mailbox_name):
vprint("guessing mailbox is of type: mbox") vprint("guessing mailbox is of type: mbox")
_archive_mbox(mailbox_name, final_archive_name) _archive_mbox(mailbox_name, final_archive_name)
elif os.path.isdir(mailbox_name): elif os.path.isdir(mailbox_name):
cur_path = os.path.join(mailbox_name, "cur") cur_path = os.path.join(mailbox_name, "cur")
new_path = os.path.join(mailbox_name, "new") new_path = os.path.join(mailbox_name, "new")
if os.path.isdir(cur_path) and os.path.isdir(new_path): if os.path.isdir(cur_path) and os.path.isdir(new_path):
vprint("guessing mailbox is of type: maildir") vprint("guessing mailbox is of type: maildir")
_archive_dir(mailbox_name, final_archive_name, "maildir") _archive_dir(mailbox_name, final_archive_name, "maildir")
else:
vprint("guessing mailbox is of type: MH")
_archive_dir(mailbox_name, final_archive_name, "mh")
else: else:
vprint("guessing mailbox is of type: MH") user_error("'%s': no such file or directory" % mailbox_name)
_archive_dir(mailbox_name, final_archive_name, "mh")
else:
user_error("'%s': no such file or directory" % mailbox_name)
# remove our special temp directory - hopefully empty # remove our special temp directory - hopefully empty
os.rmdir(new_temp_dir) os.rmdir(new_temp_dir)
_stale.temp_dir = None _stale.temp_dir = None
tempfile.tempdir = old_temp_dir
# if we are running as root, revert the seteuid()/setegid() above finally:
if (os.getuid() == 0): tempfile.tempdir = old_temp_dir
vprint("changing effective groupid and userid back to root") clean_up()
os.setegid(former_gid)
os.seteuid(0)
# if we are running as root, revert the seteuid()/setegid() above
if (os.getuid() == 0):
vprint("changing effective groupid and userid back to root")
os.setegid(former_gid)
os.seteuid(0)
def _archive_mbox(mailbox_name, final_archive_name): def _archive_mbox(mailbox_name, final_archive_name):
"""Archive a 'mbox' style mailbox - used by archive_mailbox() """Archive a 'mbox' style mailbox - used by archive_mailbox()
@ -1342,7 +1344,6 @@ def set_signal_handlers():
# Make sure we clean up nicely - we don't want to leave stale procmail # Make sure we clean up nicely - we don't want to leave stale procmail
# lockfiles about if something bad happens to us. This is quite # lockfiles about if something bad happens to us. This is quite
# important, even though procmail will delete stale files after a while. # important, even though procmail will delete stale files after a while.
atexit.register(clean_up) # delete stale files on exceptions/normal exit
signal.signal(signal.SIGHUP, clean_up_signal) # signal 1 signal.signal(signal.SIGHUP, clean_up_signal) # signal 1
# SIGINT (signal 2) is handled as a python exception # SIGINT (signal 2) is handled as a python exception
signal.signal(signal.SIGQUIT, clean_up_signal) # signal 3 signal.signal(signal.SIGQUIT, clean_up_signal) # signal 3
@ -1350,7 +1351,7 @@ def set_signal_handlers():
def clean_up(): def clean_up():
"""Delete stale files -- to be registered with atexit.register()""" """Delete stale files"""
vprint("cleaning up ...") vprint("cleaning up ...")
_stale.clean() _stale.clean()