script to fix libvirt in salt 3006.2+

salt/salt/scripts/fixLibvirt.py

@@ -0,0 +1,80 @@
+
+#!/usr/bin/env python3
+
+# resolves https://github.com/saltstack/salt/issues/64962
+# 3006.2+ has and issue with libvirt
+# use pip to install lief then run this script to resolve
+
+import datetime
+import grp
+import os
+import pathlib
+import pwd
+import shutil
+##
+import dbus  # dnf -y install python3-dbus
+##
+import lief  # https://pypi.org/project/lief/
+
+# https://github.com/saltstack/salt/issues/64962
+
+salt_root = pathlib.Path('/opt/saltstack')
+src_lib = pathlib.Path('/lib64/libldap.so.2')
+dst_lib = salt_root.joinpath('salt', 'lib', 'libldap.so.2')
+
+uname = 'root'
+gname = 'root'
+
+lib = lief.parse(str(src_lib))
+sym = next(i for i in lib.imported_symbols if i.name == 'EVP_md2')
+if sym:
+    # Get the Salt services from DBus.
+    sysbus = dbus.SystemBus()
+    sysd = sysbus.get_object('org.freedesktop.systemd1', '/org/freedesktop/systemd1')
+    mgr = dbus.Interface(sysd, 'org.freedesktop.systemd1.Manager')
+    svcs = []
+    for i in mgr.ListUnits():
+        # first element is unit name.
+        if not str(i[0]).startswith('salt-'):
+            continue
+        svc = sysbus.get_object('org.freedesktop.systemd1', object_path = mgr.GetUnit(str(i[0])))
+        props = dbus.Interface(svc, dbus_interface = 'org.freedesktop.DBus.Properties')
+        state = props.Get('org.freedesktop.systemd1.Unit', 'ActiveState')
+        if str(state) == 'active':
+            svcs.append(i[0])
+    # Get the user/group
+    u = pwd.getpwnam(uname)
+    g = grp.getgrnam(gname)
+    # Modify
+    print('Modifications necessary.')
+    if svcs:
+        # Stop the services first.
+        for sn in svcs:
+            mgr.StopUnit(sn, 'replace')
+    if dst_lib.exists():
+        # 3.10 deprecated .utcnow().
+        #dst_lib_bak = pathlib.Path(str(dst_lib) + '.bak_{0}'.format(datetime.datetime.now(datetime.UTC).timestamp()))
+        dst_lib_bak = pathlib.Path(str(dst_lib) + '.bak_{0}'.format(datetime.datetime.utcnow().timestamp()))
+        os.rename(dst_lib, dst_lib_bak)
+        print('Destination file {0} exists; backed up to {1}.'.format(dst_lib, dst_lib_bak))
+    lib.remove_dynamic_symbol(sym)
+    lib.write(str(dst_lib))
+    os.chown(dst_lib, u.pw_uid, g.gr_gid)
+    os.chmod(dst_lib, src_lib.stat().st_mode)
+    # Before we restart services, we also want to remove any python caches.
+    for root, dirs, files in os.walk(salt_root):
+        for f in files:
+            if f.lower().endswith('.pyc'):
+                fpath = os.path.join(root, f)
+                os.remove(fpath)
+                print('Removed file {0}'.format(fpath))
+        if '__pycache__' in dirs:
+            dpath = os.path.join(root, '__pycache__')
+            shutil.rmtree(dpath)
+            print('Removed directory {0}'.format(dpath))
+    # And then start the units that were started before.
+    if svcs:
+        for sn in svcs:
+            mgr.RestartUnit(sn, 'replace')
+
+print('Done.')