| 1 | package control |
| 2 | |
| 3 | import ( |
| 4 | "encoding/base64" |
| 5 | "os" |
| 6 | "path/filepath" |
| 7 | "strings" |
| 8 | "testing" |
| 9 | "time" |
| 10 | ) |
| 11 | |
| 12 | const tinyPNG = "iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAYAAAAfFcSJAAAADUlEQVR42mNk+M9QDwADhgGAWjR9awAAAABJRU5ErkJggg==" |
| 13 | |
| 14 | func TestSaveImageDataURL(t *testing.T) { |
| 15 | t.Chdir(t.TempDir()) |
| 16 | got, err := SaveImageDataURL("data:image/png;base64," + tinyPNG) |
| 17 | if err != nil { |
| 18 | t.Fatalf("SaveImageDataURL: %v", err) |
| 19 | } |
| 20 | if !strings.HasPrefix(got, ".reasonix/attachments/clipboard-") || !strings.HasSuffix(got, ".png") { |
| 21 | t.Fatalf("path = %q, want attachment png path", got) |
| 22 | } |
| 23 | } |
| 24 | |
| 25 | func TestSaveImageDataURLRejectsSpoofedMime(t *testing.T) { |
| 26 | t.Chdir(t.TempDir()) |
| 27 | if _, err := SaveImageDataURL("data:image/png;base64,aGk="); err == nil { |
| 28 | t.Fatal("spoofed image mime should fail") |
| 29 | } |
| 30 | } |
| 31 | |
| 32 | func TestCreateAttachmentFileSkipsExistingPath(t *testing.T) { |
| 33 | t.Chdir(t.TempDir()) |
| 34 | if err := ensureAttachmentRoot(); err != nil { |
| 35 | t.Fatal(err) |
| 36 | } |
| 37 | |
| 38 | first := attachmentPath(".png") |
| 39 | if err := os.WriteFile(first, []byte("keep"), 0o644); err != nil { |
| 40 | t.Fatal(err) |
| 41 | } |
| 42 | |
| 43 | rel, f, err := createAttachmentFile(".png") |
| 44 | if err != nil { |
| 45 | t.Fatalf("createAttachmentFile: %v", err) |
| 46 | } |
| 47 | if err := f.Close(); err != nil { |
| 48 | t.Fatal(err) |
| 49 | } |
| 50 | if rel == first { |
| 51 | t.Fatalf("createAttachmentFile reused existing path %q", rel) |
| 52 | } |
| 53 | if got, err := os.ReadFile(first); err != nil { |
| 54 | t.Fatal(err) |
| 55 | } else if string(got) != "keep" { |
| 56 | t.Fatalf("existing attachment was overwritten: %q", got) |
| 57 | } |
| 58 | } |
| 59 | |
| 60 | func TestSaveImageBytesUsesUniquePathsWithinSameTimestamp(t *testing.T) { |
| 61 | t.Chdir(t.TempDir()) |
| 62 | oldNow := attachmentNow |
| 63 | attachmentNow = func() time.Time { |
| 64 | return time.Date(2026, 6, 1, 10, 20, 30, 123456000, time.UTC) |
| 65 | } |
| 66 | defer func() { |
| 67 | attachmentNow = oldNow |
| 68 | }() |
| 69 | |
| 70 | raw := mustBase64(t, tinyPNG) |
| 71 | first, err := SaveImageBytes("image/png", raw) |
| 72 | if err != nil { |
| 73 | t.Fatalf("first SaveImageBytes: %v", err) |
| 74 | } |
| 75 | second, err := SaveImageBytes("image/png", raw) |
| 76 | if err != nil { |
| 77 | t.Fatalf("second SaveImageBytes: %v", err) |
| 78 | } |
| 79 | if first == second { |
| 80 | t.Fatalf("paths collided: %q", first) |
| 81 | } |
| 82 | for _, path := range []string{first, second} { |
| 83 | if got, err := os.ReadFile(path); err != nil { |
| 84 | t.Fatalf("read %s: %v", path, err) |
| 85 | } else if string(got) != string(raw) { |
| 86 | t.Fatalf("content for %s changed", path) |
| 87 | } |
| 88 | } |
| 89 | } |
| 90 | |
| 91 | func TestSaveImageFile(t *testing.T) { |
| 92 | t.Chdir(t.TempDir()) |
| 93 | if err := os.WriteFile("source.png", mustBase64(t, tinyPNG), 0o644); err != nil { |
| 94 | t.Fatal(err) |
| 95 | } |
| 96 | got, err := SaveImageFile("source.png") |
| 97 | if err != nil { |
| 98 | t.Fatalf("SaveImageFile: %v", err) |
| 99 | } |
| 100 | if !strings.HasPrefix(got, ".reasonix/attachments/clipboard-") || !strings.HasSuffix(got, ".png") { |
| 101 | t.Fatalf("path = %q, want attachment png path", got) |
| 102 | } |
| 103 | } |
| 104 | |
| 105 | func TestSaveAttachmentFile(t *testing.T) { |
| 106 | t.Chdir(t.TempDir()) |
| 107 | if err := os.WriteFile("notes.pdf", []byte("%PDF-1.4 body"), 0o644); err != nil { |
| 108 | t.Fatal(err) |
| 109 | } |
| 110 | got, err := SaveAttachmentFile("notes.pdf") |
| 111 | if err != nil { |
| 112 | t.Fatalf("SaveAttachmentFile: %v", err) |
| 113 | } |
| 114 | if !strings.HasPrefix(got, ".reasonix/attachments/clipboard-") || !strings.HasSuffix(got, ".pdf") { |
| 115 | t.Fatalf("path = %q, want attachment pdf path", got) |
| 116 | } |
| 117 | if data, err := os.ReadFile(got); err != nil || string(data) != "%PDF-1.4 body" { |
| 118 | t.Fatalf("stored bytes = %q (err %v), want original", data, err) |
| 119 | } |
| 120 | } |
| 121 | |
| 122 | func TestSaveAttachmentFileRejectsEmptyAndDir(t *testing.T) { |
| 123 | t.Chdir(t.TempDir()) |
| 124 | if err := os.WriteFile("empty.txt", nil, 0o644); err != nil { |
| 125 | t.Fatal(err) |
| 126 | } |
| 127 | if _, err := SaveAttachmentFile("empty.txt"); err == nil { |
| 128 | t.Fatal("empty file should fail") |
| 129 | } |
| 130 | if err := os.Mkdir("adir", 0o755); err != nil { |
| 131 | t.Fatal(err) |
| 132 | } |
| 133 | if _, err := SaveAttachmentFile("adir"); err == nil { |
| 134 | t.Fatal("directory should fail") |
| 135 | } |
| 136 | } |
| 137 | |
| 138 | func TestSaveAttachmentFileSanitizesExtension(t *testing.T) { |
| 139 | t.Chdir(t.TempDir()) |
| 140 | if err := os.WriteFile("payload.weird-ext-here", []byte("x"), 0o644); err != nil { |
| 141 | t.Fatal(err) |
| 142 | } |
| 143 | got, err := SaveAttachmentFile("payload.weird-ext-here") |
| 144 | if err != nil { |
| 145 | t.Fatalf("SaveAttachmentFile: %v", err) |
| 146 | } |
| 147 | if !strings.HasSuffix(got, ".bin") { |
| 148 | t.Fatalf("path = %q, want .bin fallback for unsafe extension", got) |
| 149 | } |
| 150 | } |
| 151 | |
| 152 | func TestSaveAttachmentFileRejectsSymlink(t *testing.T) { |
| 153 | t.Chdir(t.TempDir()) |
| 154 | if err := os.WriteFile("source.bin", []byte("payload"), 0o644); err != nil { |
| 155 | t.Fatal(err) |
| 156 | } |
| 157 | if err := os.Symlink("source.bin", "link.bin"); err != nil { |
| 158 | t.Skipf("symlink unsupported: %v", err) |
| 159 | } |
| 160 | if _, err := SaveAttachmentFile("link.bin"); err == nil { |
| 161 | t.Fatal("symlink attachment path should fail") |
| 162 | } |
| 163 | } |
| 164 | |
| 165 | func TestSaveImageFileRejectsSymlink(t *testing.T) { |
| 166 | t.Chdir(t.TempDir()) |
| 167 | if err := os.WriteFile("source.png", mustBase64(t, tinyPNG), 0o644); err != nil { |
| 168 | t.Fatal(err) |
| 169 | } |
| 170 | if err := os.Symlink("source.png", "link.png"); err != nil { |
| 171 | t.Skipf("symlink unsupported: %v", err) |
| 172 | } |
| 173 | if _, err := SaveImageFile("link.png"); err == nil { |
| 174 | t.Fatal("symlink image path should fail") |
| 175 | } |
| 176 | } |
| 177 | |
| 178 | func TestImageDataURLRejectsOutsideAttachmentDir(t *testing.T) { |
| 179 | t.Chdir(t.TempDir()) |
| 180 | if err := os.WriteFile("x.png", []byte("x"), 0o644); err != nil { |
| 181 | t.Fatal(err) |
| 182 | } |
| 183 | if _, err := ImageDataURL("x.png"); err == nil { |
| 184 | t.Fatal("outside attachment dir should fail") |
| 185 | } |
| 186 | if _, err := ImageDataURL("../.reasonix/attachments/x.png"); err == nil { |
| 187 | t.Fatal("traversal path should fail") |
| 188 | } |
| 189 | } |
| 190 | |
| 191 | func TestImageDataURLRejectsSymlinkFile(t *testing.T) { |
| 192 | t.Chdir(t.TempDir()) |
| 193 | if err := ensureAttachmentRoot(); err != nil { |
| 194 | t.Fatal(err) |
| 195 | } |
| 196 | if err := os.WriteFile("secret.png", []byte("secret"), 0o644); err != nil { |
| 197 | t.Fatal(err) |
| 198 | } |
| 199 | link := filepath.Join(".reasonix", "attachments", "link.png") |
| 200 | if err := os.Symlink(filepath.Join("..", "..", "secret.png"), link); err != nil { |
| 201 | t.Skipf("symlink unsupported: %v", err) |
| 202 | } |
| 203 | if _, err := ImageDataURL(link); err == nil { |
| 204 | t.Fatal("symlink attachment file should fail") |
| 205 | } |
| 206 | } |
| 207 | |
| 208 | func TestImageDataURLRejectsSymlinkAttachmentDir(t *testing.T) { |
| 209 | t.Chdir(t.TempDir()) |
| 210 | if err := os.Mkdir(".reasonix", 0o755); err != nil { |
| 211 | t.Fatal(err) |
| 212 | } |
| 213 | if err := os.Mkdir("elsewhere", 0o755); err != nil { |
| 214 | t.Fatal(err) |
| 215 | } |
| 216 | if err := os.Symlink("../elsewhere", filepath.Join(".reasonix", "attachments")); err != nil { |
| 217 | t.Skipf("symlink unsupported: %v", err) |
| 218 | } |
| 219 | if _, err := ImageDataURL(".reasonix/attachments/x.png"); err == nil { |
| 220 | t.Fatal("symlink attachment directory should fail") |
| 221 | } |
| 222 | } |
| 223 | |
| 224 | func TestImageDataURLRejectsSymlinkSubdirectory(t *testing.T) { |
| 225 | t.Chdir(t.TempDir()) |
| 226 | if err := ensureAttachmentRoot(); err != nil { |
| 227 | t.Fatal(err) |
| 228 | } |
| 229 | if err := os.Mkdir("outside", 0o755); err != nil { |
| 230 | t.Fatal(err) |
| 231 | } |
| 232 | if err := os.WriteFile(filepath.Join("outside", "x.png"), mustBase64(t, tinyPNG), 0o644); err != nil { |
| 233 | t.Fatal(err) |
| 234 | } |
| 235 | link := filepath.Join(".reasonix", "attachments", "link") |
| 236 | if err := os.Symlink(filepath.Join("..", "..", "outside"), link); err != nil { |
| 237 | t.Skipf("symlink unsupported: %v", err) |
| 238 | } |
| 239 | if _, err := ImageDataURL(filepath.Join(link, "x.png")); err == nil { |
| 240 | t.Fatal("symlink attachment subdirectory should fail") |
| 241 | } |
| 242 | } |
| 243 | |
| 244 | func mustBase64(t *testing.T, s string) []byte { |
| 245 | t.Helper() |
| 246 | raw, err := base64.StdEncoding.DecodeString(s) |
| 247 | if err != nil { |
| 248 | t.Fatal(err) |
| 249 | } |
| 250 | return raw |
| 251 | } |
| 252 |