| 1 | package claimactivation |
| 2 | |
| 3 | import ( |
| 4 | "encoding/binary" |
| 5 | "net/http" |
| 6 | "os" |
| 7 | "os/exec" |
| 8 | "path/filepath" |
| 9 | "testing" |
| 10 | |
| 11 | "github.com/carlosframework/platform/internal/release" |
| 12 | ) |
| 13 | |
| 14 | // realConsole builds a real stripped linux-arm64 program at |
| 15 | // github.com/carlosframework/platform/cmd/console with an |
| 16 | // internal/version.Build variable stamped tag, the shape a release console |
| 17 | // has. |
| 18 | func realConsole(t *testing.T, tag string) []byte { |
| 19 | t.Helper() |
| 20 | dir := t.TempDir() |
| 21 | for name, body := range map[string]string{ |
| 22 | "go.mod": "module github.com/carlosframework/platform\n\ngo 1.21\n", |
| 23 | "internal/version/version.go": "package version\n\nvar Build = \"dev\"\n", |
| 24 | "cmd/console/main.go": "package main\n\nimport (\n\t\"fmt\"\n\n\t\"github.com/carlosframework/platform/internal/version\"\n)\n\nfunc main() { fmt.Println(version.Build) }\n", |
| 25 | } { |
| 26 | if err := os.MkdirAll(filepath.Dir(filepath.Join(dir, name)), 0o755); err != nil { |
| 27 | t.Fatal(err) |
| 28 | } |
| 29 | if err := os.WriteFile(filepath.Join(dir, name), []byte(body), 0o644); err != nil { |
| 30 | t.Fatal(err) |
| 31 | } |
| 32 | } |
| 33 | out := filepath.Join(dir, "console") |
| 34 | cmd := exec.Command("go", "build", "-ldflags", "-s -w -X "+release.BuildStampFlag+"="+tag, "-o", out, "./cmd/console") |
| 35 | cmd.Dir = dir |
| 36 | cmd.Env = append(os.Environ(), "GOOS=linux", "GOARCH=arm64", "CGO_ENABLED=0", "GOFLAGS=-buildvcs=false", "GOWORK=off", "GOPROXY=off") |
| 37 | if output, err := cmd.CombinedOutput(); err != nil { |
| 38 | t.Fatal(string(output), err) |
| 39 | } |
| 40 | b, err := os.ReadFile(out) |
| 41 | if err != nil { |
| 42 | t.Fatal(err) |
| 43 | } |
| 44 | return b |
| 45 | } |
| 46 | |
| 47 | // F1: publish-identity reads a console's build info only after the bounded |
| 48 | // ELF pre-check, with the production reader (no test seam). A real stripped |
| 49 | // console publishes; a crafted one, its section-name table flagged |
| 50 | // compressed or its section count oversized, is refused with no write. |
| 51 | func TestPublishIdentityBoundsTheConsoleBinary(t *testing.T) { |
| 52 | if testing.Short() { |
| 53 | t.Skip("builds Go binaries") |
| 54 | } |
| 55 | console := realConsole(t, "v0.28.2") |
| 56 | le := binary.LittleEndian |
| 57 | mutate := func(change func(c []byte)) []byte { |
| 58 | c := append([]byte(nil), console...) |
| 59 | change(c) |
| 60 | return c |
| 61 | } |
| 62 | shoff := le.Uint64(console[40:]) |
| 63 | shstrndx := uint64(le.Uint16(console[62:])) |
| 64 | for name, tc := range map[string]struct { |
| 65 | body []byte |
| 66 | ok bool |
| 67 | }{ |
| 68 | "real stripped console": {console, true}, |
| 69 | "compressed section-name table": {mutate(func(c []byte) { |
| 70 | h := c[shoff+shstrndx*64:] |
| 71 | le.PutUint64(h[8:], le.Uint64(h[8:])|0x800) |
| 72 | }), false}, |
| 73 | "oversized shnum": {mutate(func(c []byte) { le.PutUint16(c[60:], 65000) }), false}, |
| 74 | // Astra's re-review: every section named by one 32 MiB string, which |
| 75 | // debug/elf would copy once per section. |
| 76 | "repeated 32 MiB name": {repeatedName(console, 32<<20), false}, |
| 77 | "console stamped another tag": {realConsole(t, "v0.28.1"), false}, |
| 78 | } { |
| 79 | t.Run(name, func(t *testing.T) { |
| 80 | // The crafted inputs are the pre-check's to refuse; the wrong tag |
| 81 | // passes it and is refused on its stamp. |
| 82 | if bounded := release.CheckELFBounds(tc.body) == nil; bounded != (tc.ok || name == "console stamped another tag") { |
| 83 | t.Fatal("pre-check verdict", bounded) |
| 84 | } |
| 85 | w := newArtifactsWorld(t) |
| 86 | w.r.ConsoleBuild = nil |
| 87 | w.ship(t, "eee5555", tc.body, ConsoleProgram) |
| 88 | if err := w.r.Signer.Promote(t.Context(), w.store, "bab", "console", "canary/console", "eee5555"); err != nil { |
| 89 | t.Fatal(err) |
| 90 | } |
| 91 | p := w.identityPlan(t, "eee5555") |
| 92 | mark := w.mark() |
| 93 | result, err := w.r.Run(t.Context(), p, false) |
| 94 | if tc.ok { |
| 95 | if err != nil || len(result.Output) == 0 { |
| 96 | t.Fatal("real console refused", err) |
| 97 | } |
| 98 | return |
| 99 | } |
| 100 | if err == nil { |
| 101 | t.Fatal("crafted console accepted") |
| 102 | } |
| 103 | for _, r := range w.requests()[mark:] { |
| 104 | if r.Method != http.MethodGet && r.Method != http.MethodHead { |
| 105 | t.Fatalf("refusal wrote: %+v", r) |
| 106 | } |
| 107 | } |
| 108 | }) |
| 109 | } |
| 110 | } |
| 111 | |
| 112 | // repeatedName appends a name table holding one name of size bytes to a |
| 113 | // real build and points the section-name table, and every section's name, |
| 114 | // at it. |
| 115 | func repeatedName(b []byte, size int) []byte { |
| 116 | c := append(append([]byte(nil), b...), make([]byte, size+1)...) |
| 117 | for i := len(b); i < len(b)+size; i++ { |
| 118 | c[i] = 'a' |
| 119 | } |
| 120 | le := binary.LittleEndian |
| 121 | shoff, shnum, idx := le.Uint64(c[40:]), uint64(le.Uint16(c[60:])), uint64(le.Uint16(c[62:])) |
| 122 | h := c[shoff+idx*64:] |
| 123 | le.PutUint64(h[24:], uint64(len(b))) |
| 124 | le.PutUint64(h[32:], uint64(size+1)) |
| 125 | for i := uint64(0); i < shnum; i++ { |
| 126 | le.PutUint32(c[shoff+i*64:], 0) |
| 127 | } |
| 128 | return c |
| 129 | } |
| 130 | |
amadan