| 1 | //go:build linux && rootrunner |
| 2 | |
| 3 | package host |
| 4 | |
| 5 | import ( |
| 6 | "bytes" |
| 7 | "os" |
| 8 | "os/exec" |
| 9 | "path/filepath" |
| 10 | "syscall" |
| 11 | "testing" |
| 12 | |
| 13 | "github.com/carlosframework/platform/internal/caps" |
| 14 | "github.com/carlosframework/platform/internal/release" |
| 15 | "github.com/carlosframework/platform/internal/rootparticipation" |
| 16 | "github.com/carlosframework/platform/internal/rootstate" |
| 17 | ) |
| 18 | |
| 19 | func TestPlan14RootCapabilitiesBothPaths(t *testing.T) { |
| 20 | if action := os.Getenv("PLAN14_CAPS_HOSTILE"); action != "" { |
| 21 | path := filepath.Join(rootparticipation.Namespace, "census.json") |
| 22 | var err error |
| 23 | if action == "renamed" { |
| 24 | err = os.Rename(path, path+"-old") |
| 25 | } else { |
| 26 | err = os.Remove(path) |
| 27 | } |
| 28 | if !os.IsPermission(err) { |
| 29 | t.Fatal("service UID mutated census", err) |
| 30 | } |
| 31 | return |
| 32 | } |
| 33 | if os.Geteuid() != 0 { |
| 34 | t.Fatal("root required") |
| 35 | } |
| 36 | if _, err := os.Lstat("/var/lib/carlos-claims"); !os.IsNotExist(err) { |
| 37 | t.Fatal("existing authority", err) |
| 38 | } |
| 39 | opt := t.TempDir() |
| 40 | o, effects := passOps(t) |
| 41 | rt := capsUnitRoute("keymail.dev", "keymail") |
| 42 | rt.Caps, rt.Channel = "port:25", "canary/x" |
| 43 | reg := openReg(t, rt) |
| 44 | set := &caps.Set{V: 1, Daemon: true, Ports: []caps.Port{{Port: 25}}} |
| 45 | store := release.NewDirStore(t.TempDir()) |
| 46 | seed, public, _ := release.GenerateKey() |
| 47 | priv, _ := release.ParseSigningKey(seed, "test") |
| 48 | pub, _ := release.ParsePublicKey(public, "test") |
| 49 | for _, v := range []string{"aaaaaaa", "bbbbbbb"} { |
| 50 | m := release.Manifest{Schema: 1, App: rt.App, Version: v, Kind: "binary", Capabilities: set, Artifacts: map[string]release.Artifact{runtimePlatform(): {}}} |
| 51 | if err := release.Ship(t.Context(), store, release.OpsAccount, m, map[string][]byte{runtimePlatform(): []byte(v)}); err != nil { |
| 52 | t.Fatal(err) |
| 53 | } |
| 54 | } |
| 55 | promote := func(v string) { |
| 56 | t.Helper() |
| 57 | if err := release.Promote(t.Context(), store, priv, release.OpsAccount, rt.App, rt.Channel, v); err != nil { |
| 58 | t.Fatal(err) |
| 59 | } |
| 60 | } |
| 61 | adopt := func() { |
| 62 | t.Helper() |
| 63 | if err := release.Pass(t.Context(), reg, store, pub, opt, nil, release.WithCapabilities(o)); err != nil { |
| 64 | t.Fatal(err) |
| 65 | } |
| 66 | } |
| 67 | promote("aaaaaaa") |
| 68 | adopt() |
| 69 | if v, _ := release.LiveVersion(opt, rt.Host); v != "aaaaaaa" { |
| 70 | t.Fatal("no-census adoption refused", v) |
| 71 | } |
| 72 | if err := capabilityPass(reg, opt, o); err != nil { |
| 73 | t.Fatal(err) |
| 74 | } |
| 75 | svc, sock := readDropIns(t, o, rt.Host) |
| 76 | if sock == "" { |
| 77 | t.Fatal("legacy fixture made no drop-in") |
| 78 | } |
| 79 | if err := os.Mkdir("/var/lib/carlos-claims", 0700); err != nil { |
| 80 | t.Fatal(err) |
| 81 | } |
| 82 | defer os.RemoveAll("/var/lib/carlos-claims") |
| 83 | state, err := rootstate.Open(rootparticipation.Namespace, true, false) |
| 84 | if err != nil { |
| 85 | t.Fatal(err) |
| 86 | } |
| 87 | defer state.Close() |
| 88 | if err = state.Write("census.json", []byte(`{"schema":1}`)); err != nil { |
| 89 | t.Fatal(err) |
| 90 | } |
| 91 | callbacks := 0 |
| 92 | o.Authorize = func() error { callbacks++; return nil } |
| 93 | promote("bbbbbbb") |
| 94 | for _, grant := range []string{"host-role", "doc-engine", "", "port:25,port:587"} { |
| 95 | t.Run(grant, func(t *testing.T) { |
| 96 | current, err := reg.Get(rt.Host) |
| 97 | if err != nil || current == nil { |
| 98 | t.Fatal(err) |
| 99 | } |
| 100 | if err := reg.SetCaps(rt.Host, current.Caps, grant); err != nil { |
| 101 | t.Fatal(err) |
| 102 | } |
| 103 | effects.calls, effects.users = nil, nil |
| 104 | if err := capabilityPass(reg, opt, o); err != nil { |
| 105 | t.Fatal(err) |
| 106 | } |
| 107 | adopt() |
| 108 | a, b := readDropIns(t, o, rt.Host) |
| 109 | if a != svc || b != sock || len(effects.calls) != 0 || len(effects.users) != 0 || callbacks != 0 { |
| 110 | t.Fatal("census permitted unit mutation", effects) |
| 111 | } |
| 112 | if v, _ := release.LiveVersion(opt, rt.Host); v != "aaaaaaa" { |
| 113 | t.Fatal("refused adoption repointed", v) |
| 114 | } |
| 115 | }) |
| 116 | } |
| 117 | guarded := o |
| 118 | if err := caps.Restore(guarded, caps.Snapshot{Host: rt.Host}); err == nil { |
| 119 | t.Fatal("restore bypass") |
| 120 | } |
| 121 | if err := caps.Restart(guarded, caps.Plan{Host: rt.Host}); err == nil { |
| 122 | t.Fatal("restart bypass") |
| 123 | } |
| 124 | for _, hostile := range []string{"corrupt", "renamed", "erased"} { |
| 125 | t.Run(hostile, func(t *testing.T) { |
| 126 | path := filepath.Join(rootparticipation.Namespace, "census.json") |
| 127 | if hostile == "corrupt" { |
| 128 | if err := os.WriteFile(path, []byte("corrupt"), 0600); err != nil { |
| 129 | t.Fatal(err) |
| 130 | } |
| 131 | } else { |
| 132 | binary, err := os.Open(os.Args[0]) |
| 133 | if err != nil { |
| 134 | t.Fatal(err) |
| 135 | } |
| 136 | defer binary.Close() |
| 137 | cmd := exec.Command("/proc/self/fd/3", "-test.run=^TestPlan14RootCapabilitiesBothPaths$") |
| 138 | cmd.ExtraFiles = []*os.File{binary} |
| 139 | cmd.Env = append(os.Environ(), "PLAN14_CAPS_HOSTILE="+hostile) |
| 140 | cmd.SysProcAttr = &syscall.SysProcAttr{Credential: &syscall.Credential{Uid: 65534, Gid: 65534}} |
| 141 | if out, err := cmd.CombinedOutput(); err != nil { |
| 142 | t.Fatal(err, string(out)) |
| 143 | } |
| 144 | } |
| 145 | if _, err := caps.Converge(guarded, caps.Plan{Host: rt.Host}); err == nil { |
| 146 | t.Fatal("retained census permitted converge") |
| 147 | } |
| 148 | }) |
| 149 | } |
| 150 | a, b := readDropIns(t, o, rt.Host) |
| 151 | if !bytes.Equal([]byte(a+b), []byte(svc+sock)) { |
| 152 | t.Fatal("fixed unit changed") |
| 153 | } |
| 154 | } |
| 155 | |
amadan