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libvirt/tests/virsh-auth
Daniel P. Berrangé 415e022118 src: fix mixup of stack and heap allocated data in auth callback
In the following recent change:

  commit db72866310
  Author: Daniel P. Berrangé <berrange@redhat.com>
  Date:   Tue Jan 14 10:40:52 2020 +0000

    util: add API for reading password from the console

the fact that "bufptr" pointer may point to either heap or stack
allocated data was overlooked. As a result, when the strdup was
removed, we ended up returning a pointer to the local stack to
the caller. When the caller referenced this stack pointer they
got out garbage which fairly quickly resulted in a crash.

We need to copy the stack buffer into heap memory in the username
case.

Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
2020-03-06 17:02:10 +00:00

58 lines
1.8 KiB
Python
Executable File

#!/usr/bin/env python3
# run virsh to validate interactive auth
# Copyright (C) 2020 Red Hat, Inc.
# 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
# <http://www.gnu.org/licenses/>.
import os
import os.path
import sys
import subprocess
builddir = os.getenv("abs_top_builddir")
if builddir is None:
builddir = os.path.join(os.getcwd(), "..")
srcdir = os.getenv("abs_top_srcdir")
if srcdir is None:
srcdir = os.path.abspath(os.path.join(os.path.dirname(__file__), ".."))
uri = "test://" + os.path.join(srcdir, "tests", "virsh-auth.xml")
virsh = os.path.join(builddir, "tools", "virsh")
proc = subprocess.Popen([virsh, "-c", uri, "uri"],
universal_newlines=True,
start_new_session=True,
stdin=subprocess.PIPE,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE)
out, err = proc.communicate("astrochicken")
if proc.returncode != 0:
print("virsh failed with code %d" % proc.returncode, file=sys.stderr)
if out != "":
print("stdout=%s" % out)
if err != "":
print("stderr=%s" % err)
sys.exit(1)
if uri not in out:
print("Expected '%s' in '%s'" % (uri, out), file=sys.stderr)
sys.exit(1)
sys.exit(0)