| 1 | //go:build linux |
| 2 | |
| 3 | package instancectl |
| 4 | |
| 5 | import ( |
| 6 | "context" |
| 7 | "fmt" |
| 8 | "net" |
| 9 | "os" |
| 10 | "path/filepath" |
| 11 | "testing" |
| 12 | "time" |
| 13 | ) |
| 14 | |
| 15 | func TestPlan14ExecPeerNamespaceTransition(t *testing.T) { |
| 16 | for _, attack := range []string{"none", "invocation", "group", "peer", "state"} { |
| 17 | t.Run(attack, func(t *testing.T) { |
| 18 | dir, err := os.MkdirTemp("", "ep") |
| 19 | if err != nil { |
| 20 | t.Fatal(err) |
| 21 | } |
| 22 | defer os.RemoveAll(dir) |
| 23 | ln, err := net.Listen("unix", filepath.Join(dir, "s")) |
| 24 | if err != nil { |
| 25 | t.Fatal(err) |
| 26 | } |
| 27 | defer ln.Close() |
| 28 | client, err := net.Dial("unix", filepath.Join(dir, "s")) |
| 29 | if err != nil { |
| 30 | t.Fatal(err) |
| 31 | } |
| 32 | defer client.Close() |
| 33 | server, err := ln.Accept() |
| 34 | if err != nil { |
| 35 | t.Fatal(err) |
| 36 | } |
| 37 | defer server.Close() |
| 38 | s := ClaimUnitStarted{Unit: "console.service", InvocationID: "inv", ControlGroup: "group", MainPID: os.Getpid() + 10000} |
| 39 | calls := 0 |
| 40 | u := ClaimUnits{Poll: time.Millisecond, Systemctl: func(context.Context, ...string) (string, error) { |
| 41 | calls++ |
| 42 | pid, inv, group, state := os.Getpid(), "inv", "/group", "active" |
| 43 | if calls == 1 || attack == "peer" { |
| 44 | pid += 10000 |
| 45 | } |
| 46 | switch attack { |
| 47 | case "invocation": |
| 48 | inv = "replacement" |
| 49 | case "group": |
| 50 | group = "/sibling" |
| 51 | case "state": |
| 52 | state = "failed" |
| 53 | } |
| 54 | return fmt.Sprintf("MainPID=%d\nInvocationID=%s\nControlGroup=%s\nActiveState=%s\n", pid, inv, group, state), nil |
| 55 | }} |
| 56 | ctx, cancel := context.WithTimeout(t.Context(), 50*time.Millisecond) |
| 57 | defer cancel() |
| 58 | err = u.pinExecPeer(ctx, server, &s) |
| 59 | if attack == "none" { |
| 60 | if err != nil || s.MainPID != os.Getpid() || calls < 2 { |
| 61 | t.Fatal(s, calls, err) |
| 62 | } |
| 63 | } else if err == nil { |
| 64 | t.Fatal("accepted changed identity", attack) |
| 65 | } |
| 66 | }) |
| 67 | } |
| 68 | } |
| 69 | |
amadan