138 lines
5.1 KiB
Python
138 lines
5.1 KiB
Python
#!/usr/bin/python3
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import dbus
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import dbus.service
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import dbus.mainloop.glib
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from gi.repository import GObject
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import slip.dbus.service
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from slip.dbus import polkit
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import os
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import selinux
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from subprocess import Popen, PIPE, STDOUT
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class selinux_server(slip.dbus.service.Object):
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default_polkit_auth_required = "org.selinux.semanage"
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def __init__(self, *p, **k):
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super(selinux_server, self).__init__(*p, **k)
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#
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# The semanage method runs a transaction on a series of semanage commands,
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# these commands can take the output of customized
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#
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@slip.dbus.polkit.require_auth("org.selinux.semanage")
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@dbus.service.method("org.selinux", in_signature='s')
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def semanage(self, buf):
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p = Popen(["/usr/sbin/semanage", "import"], stdout=PIPE, stderr=PIPE, stdin=PIPE, universal_newlines=True)
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p.stdin.write(buf)
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output = p.communicate()
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if p.returncode and p.returncode != 0:
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raise dbus.exceptions.DBusException(output[1])
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#
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# The customized method will return all of the custommizations for policy
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# on the server. This output can be used with the semanage method on
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# another server to make the two systems have duplicate policy.
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#
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@slip.dbus.polkit.require_auth("org.selinux.customized")
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@dbus.service.method("org.selinux", in_signature='', out_signature='s')
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def customized(self):
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p = Popen(["/usr/sbin/semanage", "export"], stdout=PIPE, stderr=PIPE, universal_newlines=True)
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buf = p.stdout.read()
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output = p.communicate()
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if p.returncode and p.returncode != 0:
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raise OSError("Failed to read SELinux configuration: %s", output)
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return buf
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#
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# The semodule_list method will return the output of semodule --list=full, using the customized polkit,
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# since this is a readonly behaviour
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#
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@slip.dbus.polkit.require_auth("org.selinux.semodule_list")
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@dbus.service.method("org.selinux", in_signature='', out_signature='s')
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def semodule_list(self):
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p = Popen(["/usr/sbin/semodule", "--list=full"], stdout=PIPE, stderr=PIPE, universal_newlines=True)
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buf = p.stdout.read()
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output = p.communicate()
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if p.returncode and p.returncode != 0:
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raise OSError("Failed to list SELinux modules: %s", output)
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return buf
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#
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# The restorecon method modifies any file path to the default system label
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#
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@slip.dbus.polkit.require_auth("org.selinux.restorecon")
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@dbus.service.method("org.selinux", in_signature='s')
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def restorecon(self, path):
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selinux.restorecon(str(path), recursive=1)
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#
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# The setenforce method turns off the current enforcement of SELinux
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#
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@slip.dbus.polkit.require_auth("org.selinux.setenforce")
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@dbus.service.method("org.selinux", in_signature='i')
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def setenforce(self, value):
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selinux.security_setenforce(value)
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#
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# The setenforce method turns off the current enforcement of SELinux
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#
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@slip.dbus.polkit.require_auth("org.selinux.relabel_on_boot")
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@dbus.service.method("org.selinux", in_signature='i')
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def relabel_on_boot(self, value):
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if value == 1:
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fd = open("/.autorelabel", "w")
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fd.close()
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else:
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os.unlink("/.autorelabel")
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def write_selinux_config(self, enforcing=None, policy=None):
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path = selinux.selinux_path() + "config"
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backup_path = path + ".bck"
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fd = open(path)
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lines = fd.readlines()
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fd.close()
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fd = open(backup_path, "w")
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for l in lines:
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if enforcing and l.startswith("SELINUX="):
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fd.write("SELINUX=%s\n" % enforcing)
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continue
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if policy and l.startswith("SELINUXTYPE="):
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fd.write("SELINUXTYPE=%s\n" % policy)
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continue
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fd.write(l)
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fd.close()
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os.rename(backup_path, path)
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#
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# The change_default_enforcement modifies the current enforcement mode
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#
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@slip.dbus.polkit.require_auth("org.selinux.change_default_mode")
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@dbus.service.method("org.selinux", in_signature='s')
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def change_default_mode(self, value):
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values = ["enforcing", "permissive", "disabled"]
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if value not in values:
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raise ValueError("Enforcement mode must be %s" % ", ".join(values))
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self.write_selinux_config(enforcing=value)
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#
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# The change_default_policy method modifies the policy type
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#
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@slip.dbus.polkit.require_auth("org.selinux.change_default_policy")
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@dbus.service.method("org.selinux", in_signature='s')
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def change_default_policy(self, value):
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path = selinux.selinux_path() + value
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if os.path.isdir(path):
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return self.write_selinux_config(policy=value)
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raise ValueError("%s does not exist" % path)
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if __name__ == "__main__":
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mainloop = GObject.MainLoop()
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dbus.mainloop.glib.DBusGMainLoop(set_as_default=True)
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system_bus = dbus.SystemBus()
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name = dbus.service.BusName("org.selinux", system_bus)
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object = selinux_server(system_bus, "/org/selinux/object")
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slip.dbus.service.set_mainloop(mainloop)
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mainloop.run()
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