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package internal
import (
"testing"
"ior/internal/event"
"ior/internal/file"
"ior/internal/globalfilter"
"ior/internal/types"
)
func TestHandleSocketExitTracksReturnedFd(t *testing.T) {
el := mustNewEventLoop(t, eventLoopConfig{})
enter := &types.SocketEvent{
EventType: types.ENTER_SOCKET_EVENT,
TraceId: types.SYS_ENTER_SOCKET,
Time: 100,
Pid: 42,
Tid: 43,
Family: 1,
Type: 2,
Protocol: 0,
}
exit := &types.RetEvent{
EventType: types.EXIT_SOCKET_EVENT,
TraceId: types.SYS_EXIT_SOCKET,
Time: 200,
Ret: 55,
Pid: 42,
Tid: 43,
}
ep := &event.Pair{EnterEv: enter, ExitEv: exit}
if ok := el.handleSocketExit(ep, enter); !ok {
t.Fatal("handleSocketExit returned false")
}
verifyFileDescriptor(t, el, 55, "socket:1:2:0")
}
func TestHandleSocketExitAppliesPairFilter(t *testing.T) {
el := mustNewEventLoop(t, eventLoopConfig{
filter: globalfilter.Filter{
Syscall: &globalfilter.StringFilter{Pattern: "openat"},
},
})
enter := &types.SocketEvent{
EventType: types.ENTER_SOCKET_EVENT,
TraceId: types.SYS_ENTER_SOCKET,
Time: 100,
Pid: 42,
Tid: 43,
Family: 1,
Type: 2,
Protocol: 0,
}
exit := &types.RetEvent{
EventType: types.EXIT_SOCKET_EVENT,
TraceId: types.SYS_EXIT_SOCKET,
Time: 200,
Ret: 55,
Pid: 42,
Tid: 43,
}
ep := &event.Pair{EnterEv: enter, ExitEv: exit}
if ok := el.handleSocketExit(ep, enter); ok {
t.Fatal("handleSocketExit should reject pair due to filter mismatch")
}
}
func TestHandleSocketpairExitTracksReturnedFdsFromExitEvent(t *testing.T) {
el := mustNewEventLoop(t, eventLoopConfig{})
enter := &types.SocketpairEvent{
EventType: types.ENTER_SOCKETPAIR_EVENT,
TraceId: types.SYS_ENTER_SOCKETPAIR,
Time: 100,
Pid: 77,
Tid: 78,
Family: 1,
Type: 1,
Protocol: 0,
Sv0: -1,
Sv1: -1,
Ret: 0,
}
exit := &types.SocketpairEvent{
EventType: types.EXIT_SOCKETPAIR_EVENT,
TraceId: types.SYS_EXIT_SOCKETPAIR,
Time: 200,
Pid: 77,
Tid: 78,
Family: 1,
Type: 1,
Protocol: 0,
Sv0: 61,
Sv1: 62,
Ret: 0,
}
ep := &event.Pair{EnterEv: enter, ExitEv: exit}
if ok := el.handleSocketpairExit(ep, enter); !ok {
t.Fatal("handleSocketpairExit returned false")
}
verifyFileDescriptor(t, el, 61, "socket:1:1:0")
verifyFileDescriptor(t, el, 62, "socket:1:1:0")
}
// TestHandleSocketpairExitDoesNotTrackDomainAsFd is a regression lock-in for the
// socketpair(2) audit (task c00). socketpair's first argument (args[0]) is the
// address-family/domain constant (e.g. AF_UNIX, AF_INET6), NOT a file
// descriptor: the two created fds are written by the kernel into the OUTPUT
// array sv[2] (args[3]) and are only valid AFTER the call returns. KindSocketpair
// captures sv0/sv1 from that output buffer at exit; it must never register the
// domain integer as an fd. This test pins that invariant by using a Family value
// (AF_INET6 == 10) that is numerically distinct from the returned fds and
// asserting fd 10 is never tracked.
func TestHandleSocketpairExitDoesNotTrackDomainAsFd(t *testing.T) {
el := mustNewEventLoop(t, eventLoopConfig{})
const afInet6 = 10
enter := &types.SocketpairEvent{
EventType: types.ENTER_SOCKETPAIR_EVENT,
TraceId: types.SYS_ENTER_SOCKETPAIR,
Time: 100,
Pid: 77,
Tid: 78,
Family: afInet6,
Type: 1,
Protocol: 0,
Sv0: -1,
Sv1: -1,
Ret: 0,
}
exit := &types.SocketpairEvent{
EventType: types.EXIT_SOCKETPAIR_EVENT,
TraceId: types.SYS_EXIT_SOCKETPAIR,
Time: 200,
Pid: 77,
Tid: 78,
Family: afInet6,
Type: 1,
Protocol: 0,
Sv0: 3,
Sv1: 4,
Ret: 0,
}
ep := &event.Pair{EnterEv: enter, ExitEv: exit}
if ok := el.handleSocketpairExit(ep, enter); !ok {
t.Fatal("handleSocketpairExit returned false")
}
// Only the output fds sv[2] are tracked.
verifyFileDescriptor(t, el, 3, "socket:10:1:0")
verifyFileDescriptor(t, el, 4, "socket:10:1:0")
// The domain constant (AF_INET6 == 10) must NOT have been captured as an fd.
verifyFdNotTracked(t, el, afInet6)
}
// TestHandleSocketpairExitDropsFdsOnError pins that a failed socketpair(2)
// (ret != 0) tracks no descriptors: the sv[2] output buffer is undefined on
// error, so the BPF exit handler leaves sv0/sv1 at the -1 sentinel and the
// userspace handler must not register anything.
func TestHandleSocketpairExitDropsFdsOnError(t *testing.T) {
el := mustNewEventLoop(t, eventLoopConfig{})
enter := &types.SocketpairEvent{
EventType: types.ENTER_SOCKETPAIR_EVENT,
TraceId: types.SYS_ENTER_SOCKETPAIR,
Time: 100,
Pid: 77,
Tid: 78,
Family: 1,
Type: 1,
Protocol: 0,
Sv0: -1,
Sv1: -1,
Ret: 0,
}
exit := &types.SocketpairEvent{
EventType: types.EXIT_SOCKETPAIR_EVENT,
TraceId: types.SYS_EXIT_SOCKETPAIR,
Time: 200,
Pid: 77,
Tid: 78,
Family: 1,
Type: 1,
Protocol: 0,
Sv0: -1,
Sv1: -1,
Ret: -24, // -EMFILE
}
ep := &event.Pair{EnterEv: enter, ExitEv: exit}
if ok := el.handleSocketpairExit(ep, enter); !ok {
t.Fatal("handleSocketpairExit returned false")
}
verifyFdNotTracked(t, el, 1)
verifyFdNotTracked(t, el, -1)
}
func TestHandleAcceptExitTracksAcceptedFd(t *testing.T) {
el := mustNewEventLoop(t, eventLoopConfig{})
el.fdState().set(11, file.NewFd(11, "socket:1:1:0", -1))
enter := &types.AcceptEvent{
EventType: types.ENTER_ACCEPT_EVENT,
TraceId: types.SYS_ENTER_ACCEPT4,
Time: 100,
Pid: 91,
Tid: 92,
Fd: 11,
Ret: -1,
}
exit := &types.AcceptEvent{
EventType: types.EXIT_ACCEPT_EVENT,
TraceId: types.SYS_EXIT_ACCEPT4,
Time: 200,
Pid: 91,
Tid: 92,
Fd: -1,
Ret: 77,
}
ep := &event.Pair{EnterEv: enter, ExitEv: exit}
if ok := el.handleAcceptExit(ep, enter); !ok {
t.Fatal("handleAcceptExit returned false")
}
verifyFileDescriptor(t, el, 77, "socket:1:1:0")
}
func TestHandleAcceptExitAppliesPairFilter(t *testing.T) {
el := mustNewEventLoop(t, eventLoopConfig{
filter: globalfilter.Filter{
Syscall: &globalfilter.StringFilter{Pattern: "openat"},
},
})
el.fdState().set(11, file.NewFd(11, "socket:1:1:0", -1))
enter := &types.AcceptEvent{
EventType: types.ENTER_ACCEPT_EVENT,
TraceId: types.SYS_ENTER_ACCEPT,
Time: 100,
Pid: 91,
Tid: 92,
Fd: 11,
Ret: -1,
}
exit := &types.AcceptEvent{
EventType: types.EXIT_ACCEPT_EVENT,
TraceId: types.SYS_EXIT_ACCEPT,
Time: 200,
Pid: 91,
Tid: 92,
Fd: -1,
Ret: 77,
}
ep := &event.Pair{EnterEv: enter, ExitEv: exit}
if ok := el.handleAcceptExit(ep, enter); ok {
t.Fatal("handleAcceptExit should reject pair due to filter mismatch")
}
}
func TestInitRawHandlersRegistersSocketEvents(t *testing.T) {
el := mustNewEventLoop(t, eventLoopConfig{})
if _, ok := el.rawHandlers[types.ENTER_SOCKET_EVENT]; !ok {
t.Fatal("ENTER_SOCKET_EVENT handler is not registered")
}
if _, ok := el.rawHandlers[types.ENTER_SOCKETPAIR_EVENT]; !ok {
t.Fatal("ENTER_SOCKETPAIR_EVENT handler is not registered")
}
if _, ok := el.rawHandlers[types.EXIT_SOCKETPAIR_EVENT]; !ok {
t.Fatal("EXIT_SOCKETPAIR_EVENT handler is not registered")
}
if _, ok := el.rawHandlers[types.ENTER_ACCEPT_EVENT]; !ok {
t.Fatal("ENTER_ACCEPT_EVENT handler is not registered")
}
if _, ok := el.rawHandlers[types.EXIT_ACCEPT_EVENT]; !ok {
t.Fatal("EXIT_ACCEPT_EVENT handler is not registered")
}
}
|
