| 1 | package main |
| 2 | |
| 3 | import ( |
| 4 | "crypto/ecdsa" |
| 5 | "crypto/elliptic" |
| 6 | "crypto/rand" |
| 7 | "crypto/x509" |
| 8 | "encoding/json" |
| 9 | "encoding/pem" |
| 10 | "io" |
| 11 | "net/http" |
| 12 | "net/http/httptest" |
| 13 | "path/filepath" |
| 14 | "strings" |
| 15 | "testing" |
| 16 | |
| 17 | "lchat/internal/apns" |
| 18 | ) |
| 19 | |
| 20 | const testAdmin = "test-admin-token" |
| 21 | |
| 22 | // device tokens the stub Apple server treats specially (all valid hex). |
| 23 | const ( |
| 24 | liveDevice = "aaaaaaaa" |
| 25 | deadDevice = "deadbeef" |
| 26 | ) |
| 27 | |
| 28 | func testKeyPEM(t *testing.T) string { |
| 29 | t.Helper() |
| 30 | key, _ := ecdsa.GenerateKey(elliptic.P256(), rand.Reader) |
| 31 | der, _ := x509.MarshalPKCS8PrivateKey(key) |
| 32 | return string(pem.EncodeToMemory(&pem.Block{Type: "PRIVATE KEY", Bytes: der})) |
| 33 | } |
| 34 | |
| 35 | // newTestRelay wires the real router (s.handler) over a temp DB, with the APNs |
| 36 | // client pointed at a stub standing in for Apple. |
| 37 | func newTestRelay(t *testing.T) *httptest.Server { |
| 38 | t.Helper() |
| 39 | stub := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { |
| 40 | if strings.Contains(r.URL.Path, deadDevice) { |
| 41 | w.WriteHeader(http.StatusGone) |
| 42 | return |
| 43 | } |
| 44 | w.WriteHeader(http.StatusOK) |
| 45 | })) |
| 46 | c, err := apns.New(testKeyPEM(t), "KID1234567", "TEAM123456", "com.example.app") |
| 47 | if err != nil { |
| 48 | t.Fatal(err) |
| 49 | } |
| 50 | c.SetHosts(stub.URL, stub.URL) |
| 51 | |
| 52 | db, err := openDB(filepath.Join(t.TempDir(), "push.db")) |
| 53 | if err != nil { |
| 54 | t.Fatal(err) |
| 55 | } |
| 56 | s := &Server{ |
| 57 | db: db, apns: c, adminHash: hashToken(testAdmin), |
| 58 | perInstance: newRateLimiter(1000, 500), |
| 59 | global: newRateLimiter(4000, 2000), |
| 60 | } |
| 61 | srv := httptest.NewServer(s.handler()) |
| 62 | t.Cleanup(func() { srv.Close(); stub.Close(); db.sql.Close() }) |
| 63 | return srv |
| 64 | } |
| 65 | |
| 66 | func do(t *testing.T, method, url, bearer, body string) *http.Response { |
| 67 | t.Helper() |
| 68 | var r io.Reader |
| 69 | if body != "" { |
| 70 | r = strings.NewReader(body) |
| 71 | } |
| 72 | rq, _ := http.NewRequest(method, url, r) |
| 73 | if bearer != "" { |
| 74 | rq.Header.Set("Authorization", "Bearer "+bearer) |
| 75 | } |
| 76 | resp, err := http.DefaultClient.Do(rq) |
| 77 | if err != nil { |
| 78 | t.Fatal(err) |
| 79 | } |
| 80 | return resp |
| 81 | } |
| 82 | |
| 83 | // mint creates an instance token via the admin API and returns (id, token). |
| 84 | func mint(t *testing.T, base, label string) (string, string) { |
| 85 | t.Helper() |
| 86 | resp := do(t, "POST", base+"/api/admin/tokens", testAdmin, `{"label":"`+label+`"}`) |
| 87 | defer resp.Body.Close() |
| 88 | if resp.StatusCode != http.StatusOK { |
| 89 | t.Fatalf("mint: status %d", resp.StatusCode) |
| 90 | } |
| 91 | var out struct{ ID, Token string } |
| 92 | if err := json.NewDecoder(resp.Body).Decode(&out); err != nil { |
| 93 | t.Fatal(err) |
| 94 | } |
| 95 | if out.Token == "" || out.ID == "" { |
| 96 | t.Fatal("mint returned empty id/token") |
| 97 | } |
| 98 | return out.ID, out.Token |
| 99 | } |
| 100 | |
| 101 | func push(t *testing.T, base, token, deviceToken, extra string) int { |
| 102 | t.Helper() |
| 103 | body := `{"device_token":"` + deviceToken + `","thread":"th","blob":"x"` + extra + `}` |
| 104 | resp := do(t, "POST", base+"/api/push", token, body) |
| 105 | resp.Body.Close() |
| 106 | return resp.StatusCode |
| 107 | } |
| 108 | |
| 109 | func TestPushAuth(t *testing.T) { |
| 110 | base := newTestRelay(t).URL |
| 111 | if got := push(t, base, "", liveDevice, ""); got != http.StatusUnauthorized { |
| 112 | t.Errorf("no token: want 401, got %d", got) |
| 113 | } |
| 114 | if got := push(t, base, "bogus-token", liveDevice, ""); got != http.StatusUnauthorized { |
| 115 | t.Errorf("bad token: want 401, got %d", got) |
| 116 | } |
| 117 | _, tok := mint(t, base, "family.example.com") |
| 118 | if got := push(t, base, tok, liveDevice, ""); got != http.StatusOK { |
| 119 | t.Errorf("minted token: want 200, got %d", got) |
| 120 | } |
| 121 | } |
| 122 | |
| 123 | func TestPushRevoke(t *testing.T) { |
| 124 | base := newTestRelay(t).URL |
| 125 | id, tok := mint(t, base, "test.example.com") |
| 126 | if got := push(t, base, tok, liveDevice, ""); got != http.StatusOK { |
| 127 | t.Fatalf("pre-revoke: want 200, got %d", got) |
| 128 | } |
| 129 | resp := do(t, "DELETE", base+"/api/admin/tokens/"+id, testAdmin, "") |
| 130 | resp.Body.Close() |
| 131 | if resp.StatusCode != http.StatusOK { |
| 132 | t.Fatalf("revoke: want 200, got %d", resp.StatusCode) |
| 133 | } |
| 134 | if got := push(t, base, tok, liveDevice, ""); got != http.StatusUnauthorized { |
| 135 | t.Errorf("post-revoke: want 401, got %d", got) |
| 136 | } |
| 137 | } |
| 138 | |
| 139 | func TestPushGonePassthrough(t *testing.T) { |
| 140 | base := newTestRelay(t).URL |
| 141 | _, tok := mint(t, base, "test.example.com") |
| 142 | // Apple says the token is dead → relay must return a bare 410 so the |
| 143 | // instance prunes it. |
| 144 | if got := push(t, base, tok, deadDevice, ""); got != http.StatusGone { |
| 145 | t.Errorf("dead device: want 410, got %d", got) |
| 146 | } |
| 147 | } |
| 148 | |
| 149 | func TestPushBadDeviceToken(t *testing.T) { |
| 150 | base := newTestRelay(t).URL |
| 151 | _, tok := mint(t, base, "test.example.com") |
| 152 | if got := push(t, base, tok, "zznothex", ""); got != http.StatusBadRequest { |
| 153 | t.Errorf("non-hex device token: want 400, got %d", got) |
| 154 | } |
| 155 | } |
| 156 | |
| 157 | func TestPushOversized(t *testing.T) { |
| 158 | base := newTestRelay(t).URL |
| 159 | _, tok := mint(t, base, "test.example.com") |
| 160 | // A blob well over maxPushBytes must 413, never 410 (a false prune). |
| 161 | big := `,"pad":"` + strings.Repeat("a", 9000) + `"` |
| 162 | if got := push(t, base, tok, liveDevice, big); got != http.StatusRequestEntityTooLarge { |
| 163 | t.Errorf("oversized: want 413, got %d", got) |
| 164 | } |
| 165 | } |
| 166 | |
| 167 | func TestAdminRequiresToken(t *testing.T) { |
| 168 | base := newTestRelay(t).URL |
| 169 | for _, tc := range []struct{ method, path string }{ |
| 170 | {"POST", "/api/admin/tokens"}, |
| 171 | {"GET", "/api/admin/tokens"}, |
| 172 | {"DELETE", "/api/admin/tokens/x"}, |
| 173 | } { |
| 174 | resp := do(t, tc.method, base+tc.path, "wrong-admin", `{"label":"x"}`) |
| 175 | resp.Body.Close() |
| 176 | if resp.StatusCode != http.StatusUnauthorized { |
| 177 | t.Errorf("%s %s without admin: want 401, got %d", tc.method, tc.path, resp.StatusCode) |
| 178 | } |
| 179 | } |
| 180 | } |
| 181 | |
| 182 | func TestHealthz(t *testing.T) { |
| 183 | base := newTestRelay(t).URL |
| 184 | resp := do(t, "GET", base+"/healthz", "", "") |
| 185 | defer resp.Body.Close() |
| 186 | if resp.StatusCode != http.StatusOK { |
| 187 | t.Errorf("healthz: want 200, got %d", resp.StatusCode) |
| 188 | } |
| 189 | } |
| 190 | |
| 191 | // A changelog announcement: plaintext title/body instead of a ciphertext blob |
| 192 | // (the one non-blind payload — branding-class release notes). Same 200/410 |
| 193 | // contract as message pushes. |
| 194 | func TestPushChangelogAlert(t *testing.T) { |
| 195 | base := newTestRelay(t).URL |
| 196 | _, tok := mint(t, base, "inst") |
| 197 | body := `{"device_token":"` + liveDevice + `","changelog":true,"title":"What's new","body":"Notes."}` |
| 198 | if resp := do(t, "POST", base+"/api/push", tok, body); resp.StatusCode != http.StatusOK { |
| 199 | t.Fatalf("changelog push: status %d", resp.StatusCode) |
| 200 | } |
| 201 | // Dead tokens prune through the changelog path too. |
| 202 | body = `{"device_token":"` + deadDevice + `","changelog":true,"title":"What's new","body":"Notes."}` |
| 203 | if resp := do(t, "POST", base+"/api/push", tok, body); resp.StatusCode != http.StatusGone { |
| 204 | t.Fatalf("changelog push to dead device: status %d, want 410", resp.StatusCode) |
| 205 | } |
| 206 | } |
| 207 | |
amadan