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apparmor.d/pkg/logs/logs_test.go

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// apparmor.d - Full set of apparmor profiles
// Copyright (C) 2021-2023 Alexandre Pujol <alexandre@pujol.io>
// SPDX-License-Identifier: GPL-2.0-only
package logs
import (
"os"
"reflect"
"strings"
"testing"
)
var (
refKmod = AppArmorLogs{
{
"apparmor": "ALLOWED",
"profile": "kmod",
"operation": "file_inherit",
"comm": "modprobe",
"family": "unix",
"sock_type": "stream",
"protocol": "0",
"requested_mask": "send receive",
},
}
refMan = AppArmorLogs{
{
"apparmor": "ALLOWED",
"profile": "man",
"operation": "exec",
"name": "/usr/bin/preconv",
"target": "man_groff",
"info": "no new privs",
"comm": "man",
"requested_mask": "x",
"denied_mask": "x",
"error": "-1",
"fsuid": "1000",
"ouid": "0",
"FSUID": "user",
"OUID": "root",
},
}
refPowerProfiles = AppArmorLogs{
{
"apparmor": "ALLOWED",
"profile": "",
"label": "power-profiles-daemon",
"operation": "dbus_method_call",
"name": "org.freedesktop.DBus",
"mask": "send",
"bus": "system",
"path": "/org/freedesktop/DBus",
"interface": "org.freedesktop.DBus",
"member": "AddMatch",
"peer_label": "dbus-daemon",
"exe": "/usr/bin/dbus-daemon",
"sauid": "102",
"hostname": "?",
"addr": "?",
"terminal": "?",
"UID": "messagebus",
"AUID": "unset",
"SAUID": "messagebus",
},
}
)
func TestAppArmorEvents(t *testing.T) {
tests := []struct {
name string
event string
want AppArmorLogs
}{
{
name: "event_audit_1",
event: `type=AVC msg=audit(1345027352.096:499): apparmor="ALLOWED" operation="rename_dest" parent=6974 profile="/usr/sbin/httpd2-prefork//vhost_foo" name=2F686F6D652F7777772F666F6F2E6261722E696E2F68747470646F63732F61707061726D6F722F696D616765732F746573742F696D61676520312E6A7067 pid=20143 comm="httpd2-prefork" requested_mask="wc" denied_mask="wc" fsuid=30 ouid=30`,
want: AppArmorLogs{
{
"apparmor": "ALLOWED",
"profile": "/usr/sbin/httpd2-prefork//vhost_foo",
"operation": "rename_dest",
"name": "/home/www/foo.bar.in/httpdocs/apparmor/images/test/image 1.jpg",
"comm": "httpd2-prefork",
"requested_mask": "wc",
"denied_mask": "wc",
"parent": "6974",
"fsuid": "30",
"ouid": "30",
},
},
},
{
name: "event_audit_2",
event: `type=AVC msg=audit(1322614918.292:4376): apparmor="ALLOWED" operation="file_perm" parent=16001 profile=666F6F20626172 name="/home/foo/.bash_history" pid=17011 comm="bash" requested_mask="rw" denied_mask="rw" fsuid=0 ouid=1000`,
want: AppArmorLogs{
{
"apparmor": "ALLOWED",
"profile": "foo bar",
"operation": "file_perm",
"name": "/home/foo/.bash_history",
"comm": "bash",
"requested_mask": "rw",
"denied_mask": "rw",
"parent": "16001",
"fsuid": "0",
"ouid": "1000",
},
},
},
{
name: "disconnected_path",
event: `type=AVC msg=audit(1424425690.883:716630): apparmor="ALLOWED" operation="file_mmap" info="Failed name lookup - disconnected path" error=-13 profile="/sbin/klogd" name="var/run/nscd/passwd" pid=25333 comm="id" requested_mask="r" denied_mask="r" fsuid=1002 ouid=0`,
want: AppArmorLogs{
{
"apparmor": "ALLOWED",
"profile": "/sbin/klogd",
"operation": "file_mmap",
"name": "var/run/nscd/passwd",
"comm": "id",
"info": "Failed name lookup - disconnected path",
"requested_mask": "r",
"denied_mask": "r",
"error": "-13",
"fsuid": "1002",
"ouid": "0",
},
},
},
{
name: "dbus_system",
event: `type=USER_AVC msg=audit(1111111111.111:1111): pid=1780 uid=102 auid=4294967295 ses=4294967295 subj=? msg='apparmor="ALLOWED" operation="dbus_method_call" bus="system" path="/org/freedesktop/PolicyKit1/Authority" interface="org.freedesktop.PolicyKit1.Authority" member="CheckAuthorization" mask="send" name="org.freedesktop.PolicyKit1" pid=1794 label="snapd" peer_pid=1790 peer_label="polkitd" exe="/usr/bin/dbus-daemon" sauid=102 hostname=? addr=? terminal=? UID="messagebus" AUID="unset" SAUID="messagebus"`,
want: AppArmorLogs{
{
"apparmor": "ALLOWED",
"profile": "",
"label": "snapd",
"operation": "dbus_method_call",
"name": "org.freedesktop.PolicyKit1",
"mask": "send",
"bus": "system",
"path": "/org/freedesktop/PolicyKit1/Authority",
"interface": "org.freedesktop.PolicyKit1.Authority",
"member": "CheckAuthorization",
"peer_label": "polkitd",
"exe": "/usr/bin/dbus-daemon",
"sauid": "102",
"hostname": "?",
"addr": "?",
"terminal": "?",
"UID": "messagebus",
"AUID": "unset",
"SAUID": "messagebus",
},
},
},
{
name: "dbus_session",
event: `apparmor="ALLOWED" operation="dbus_bind" bus="session" name="org.freedesktop.portal.Documents" mask="bind" pid=2174 label="xdg-document-portal"`,
want: AppArmorLogs{
{
"apparmor": "ALLOWED",
"profile": "",
"label": "xdg-document-portal",
"operation": "dbus_bind",
"name": "org.freedesktop.portal.Documents",
"mask": "bind",
"bus": "session",
},
},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
file := strings.NewReader(tt.event)
if got := NewApparmorLogs(file, ""); !reflect.DeepEqual(got, tt.want) {
t.Errorf("NewApparmorLogs() = %v, want %v", got, tt.want)
}
})
}
}
func TestNewApparmorLogs(t *testing.T) {
tests := []struct {
name string
path string
want AppArmorLogs
}{
{
name: "dnsmasq",
path: "../../tests/audit.log",
want: AppArmorLogs{
{
"apparmor": "DENIED",
"profile": "dnsmasq",
"operation": "open",
"name": "/proc/sys/kernel/osrelease",
"comm": "dnsmasq",
"requested_mask": "r",
"denied_mask": "r",
"fsuid": "0",
"ouid": "0",
"FSUID": "root",
"OUID": "root",
},
{
"apparmor": "DENIED",
"profile": "dnsmasq",
"operation": "open",
"name": "/proc/1/environ",
"comm": "dnsmasq",
"requested_mask": "r",
"denied_mask": "r",
"fsuid": "0",
"ouid": "0",
"FSUID": "root",
"OUID": "root",
},
{
"apparmor": "DENIED",
"profile": "dnsmasq",
"operation": "open",
"name": "/proc/cmdline",
"comm": "dnsmasq",
"requested_mask": "r",
"denied_mask": "r",
"fsuid": "0",
"ouid": "0",
"FSUID": "root",
"OUID": "root",
},
},
},
{
name: "kmod",
path: "../../tests/audit.log",
want: refKmod,
},
{
name: "man",
path: "../../tests/audit.log",
want: refMan,
},
{
name: "power-profiles-daemon",
path: "../../tests/audit.log",
want: refPowerProfiles,
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
file, _ := os.Open(tt.path)
if got := NewApparmorLogs(file, tt.name); !reflect.DeepEqual(got, tt.want) {
t.Errorf("NewApparmorLogs() = %v, want %v", got, tt.want)
}
})
}
}
func TestAppArmorLogs_String(t *testing.T) {
tests := []struct {
name string
aaLogs AppArmorLogs
want string
}{
{
name: "kmod",
aaLogs: refKmod,
want: "\033[1;32mALLOWED\033[0m \033[34mkmod\033[0m \033[33mfile_inherit\033[0m comm=modprobe family=unix sock_type=stream protocol=0 requested_mask=\033[1;31m\"send receive\"\033[0m\n",
},
{
name: "man",
aaLogs: refMan,
want: "\033[1;32mALLOWED\033[0m \033[34mman\033[0m \033[33mexec\033[0m \033[35m/usr/bin/preconv\033[0m -> \033[35mman_groff\033[0m info=\"no new privs\" comm=man requested_mask=\033[1;31mx\033[0m denied_mask=\033[1;31mx\033[0m error=-1\n",
},
{
name: "power-profiles-daemon",
aaLogs: refPowerProfiles,
want: "\033[1;32mALLOWED\033[0m \033[34mpower-profiles-daemon\033[0m \033[33mdbus_method_call\033[0m \033[35morg.freedesktop.DBus\033[0m \033[1;31msend\033[0m \033[36mbus=system\033[0m path=\033[37m/org/freedesktop/DBus\033[0m interface=\033[37morg.freedesktop.DBus\033[0m member=\033[32mAddMatch\033[0m peer_label=dbus-daemon\n",
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
if got := tt.aaLogs.String(); got != tt.want {
t.Errorf("AppArmorLogs.String() = %v, want %v len: %d - %d", got, tt.want, len(got), len(tt.want))
}
})
}
}
func TestAppArmorLogs_Anonymize(t *testing.T) {
tests := []struct {
name string
aaLogs AppArmorLogs
want AppArmorLogs
}{
{
name: "Anonymize Username",
aaLogs: AppArmorLogs{
{
"apparmor": "ALLOWED",
"profile": "foo",
"operation": "file_perm",
"name": "/home/foo/.bash_history",
"comm": "bash",
"requested_mask": "rw",
"denied_mask": "rw",
"parent": "16001",
},
},
want: AppArmorLogs{
{
"apparmor": "ALLOWED",
"profile": "foo",
"operation": "file_perm",
"name": "/home/AAD/.bash_history",
"comm": "bash",
"requested_mask": "rw",
"denied_mask": "rw",
"parent": "16001",
},
},
},
{
name: "Anonymize UUID",
aaLogs: AppArmorLogs{
{
"apparmor": "ALLOWED",
"profile": "drkonqi",
"operation": "file_perm",
"name": "/sys/devices/pci0000:00/0000:00:02.0/drm/card1/metrics/399d3001-97d6-4240-b065-4fb843138e17/id",
"comm": "bash",
"requested_mask": "r",
"denied_mask": "r",
"parent": "16001",
},
},
want: AppArmorLogs{
{
"apparmor": "ALLOWED",
"profile": "drkonqi",
"operation": "file_perm",
"name": "/sys/devices/pci0000:00/0000:00:02.0/drm/card1/metrics/b08dfa60-83e7-567a-1921-a715000001fb/id",
"comm": "bash",
"requested_mask": "r",
"denied_mask": "r",
"parent": "16001",
},
},
},
}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
tt.aaLogs.Anonymize()
if !reflect.DeepEqual(tt.aaLogs, tt.want) {
t.Errorf("Anonymize() = %v, want %v", tt.aaLogs, tt.want)
}
})
}
}
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