| 1 | package main |
| 2 | |
| 3 | // 🤖 Account-merge tests (merge.go, issue #1098): the both-sides-proofs gate, |
| 4 | // the empty-absorbed-vault precondition, and the move itself — everything the |
| 5 | // absorbed account could sign in with ends up on the survivor, including the |
| 6 | // absorbed devices' link tokens. Store-level move semantics live in the |
| 7 | // vaultStore contract suite (store_test.go MergeAccounts); these tests cover |
| 8 | // the HTTP contract. |
| 9 | |
| 10 | import ( |
| 11 | "encoding/json" |
| 12 | "net/http" |
| 13 | "testing" |
| 14 | "time" |
| 15 | ) |
| 16 | |
| 17 | func mergeBody(t *testing.T, absorbProof string) []byte { |
| 18 | t.Helper() |
| 19 | b, err := json.Marshal(map[string]string{"absorb_proof": absorbProof}) |
| 20 | if err != nil { |
| 21 | t.Fatalf("marshal: %v", err) |
| 22 | } |
| 23 | return b |
| 24 | } |
| 25 | |
| 26 | func TestAccountMergeHappyPath(t *testing.T) { |
| 27 | ts, s := newTestServer(t) |
| 28 | survivor, survTok := seedUser(t, s) |
| 29 | absorbed, absTok := seedUser(t, s) |
| 30 | s.store.insertSiwaAnchor(absorbed, "merge-siwa") |
| 31 | s.store.insertEmailAnchor(absorbed, "merge-email") |
| 32 | s.store.insertOidcAnchor(absorbed, "google", "merge-google") |
| 33 | // The survivor's vault already holds the client-side union (the client |
| 34 | // merged and PUT before calling this endpoint). |
| 35 | if r := do(t, "PUT", ts.URL+"/api/blob", survTok, map[string]string{"If-Match": `"0"`}, []byte("merged-vault")); r.StatusCode != http.StatusOK { |
| 36 | t.Fatalf("survivor PUT blob: want 200, got %d", r.StatusCode) |
| 37 | } |
| 38 | |
| 39 | survProof := s.keys.mintCeremonyProof(survivor) |
| 40 | absProof := s.keys.mintCeremonyProof(absorbed) |
| 41 | r := do(t, "POST", ts.URL+"/api/account/merge", survTok, |
| 42 | map[string]string{"X-Ceremony-Proof": survProof}, mergeBody(t, absProof)) |
| 43 | if r.StatusCode != http.StatusOK { |
| 44 | t.Fatalf("merge: want 200, got %d", r.StatusCode) |
| 45 | } |
| 46 | var out struct { |
| 47 | Merged bool `json:"merged"` |
| 48 | Moved mergeMoved `json:"moved"` |
| 49 | } |
| 50 | if err := json.NewDecoder(r.Body).Decode(&out); err != nil { |
| 51 | t.Fatalf("bad json: %v", err) |
| 52 | } |
| 53 | if !out.Merged || out.Moved.Anchors != 3 || out.Moved.Passkeys != 1 || out.Moved.Devices != 1 { |
| 54 | t.Fatalf("merge response: %+v", out) |
| 55 | } |
| 56 | |
| 57 | // The anchors listing shows every way in under the survivor: two |
| 58 | // passkeys plus the three moved anchors. |
| 59 | kinds := map[string]int{} |
| 60 | for _, a := range listAnchors(t, ts.URL, survTok) { |
| 61 | kinds[a.Kind]++ |
| 62 | } |
| 63 | if kinds["passkey"] != 2 || kinds["siwa"] != 1 || kinds["email"] != 1 || kinds["google"] != 1 { |
| 64 | t.Fatalf("post-merge anchors listing: %+v", kinds) |
| 65 | } |
| 66 | // The absorbed device's link token now signs into the survivor — it sees |
| 67 | // the merged vault. |
| 68 | r = do(t, "GET", ts.URL+"/api/blob", absTok, nil, nil) |
| 69 | if r.StatusCode != http.StatusOK { |
| 70 | t.Fatalf("absorbed token GET blob: want 200, got %d", r.StatusCode) |
| 71 | } |
| 72 | if uid, ok := s.store.linkTokenUser(hashToken(absTok)); !ok || uid != survivor { |
| 73 | t.Fatalf("absorbed token resolves to %q (ok=%v), want survivor", uid, ok) |
| 74 | } |
| 75 | // The absorbed account is gone (SQLite backs the test server). |
| 76 | if s.store.(*sqliteStore).userExists(absorbed) { |
| 77 | t.Fatalf("absorbed user row survives the merge") |
| 78 | } |
| 79 | // A retry within the proofs' lifetime is a zero-count success. |
| 80 | r = do(t, "POST", ts.URL+"/api/account/merge", survTok, |
| 81 | map[string]string{"X-Ceremony-Proof": survProof}, mergeBody(t, absProof)) |
| 82 | if r.StatusCode != http.StatusOK { |
| 83 | t.Fatalf("retried merge: want 200, got %d", r.StatusCode) |
| 84 | } |
| 85 | if err := json.NewDecoder(r.Body).Decode(&out); err != nil { |
| 86 | t.Fatalf("bad json: %v", err) |
| 87 | } |
| 88 | if !out.Merged || out.Moved != (mergeMoved{}) { |
| 89 | t.Fatalf("retried merge response: %+v", out) |
| 90 | } |
| 91 | } |
| 92 | |
| 93 | // The precondition: the client moves the vault contents over (and deletes the |
| 94 | // absorbed blob) BEFORE the merge — an absorbed account still holding a blob |
| 95 | // is refused with a plain message, and nothing moves. |
| 96 | func TestAccountMergeAbsorbedBlobStillPresent(t *testing.T) { |
| 97 | ts, s := newTestServer(t) |
| 98 | survivor, survTok := seedUser(t, s) |
| 99 | absorbed, absTok := seedUser(t, s) |
| 100 | s.store.insertEmailAnchor(absorbed, "still-here") |
| 101 | if r := do(t, "PUT", ts.URL+"/api/blob", absTok, map[string]string{"If-Match": `"0"`}, []byte("unmoved-vault")); r.StatusCode != http.StatusOK { |
| 102 | t.Fatalf("absorbed PUT blob: want 200, got %d", r.StatusCode) |
| 103 | } |
| 104 | |
| 105 | survProof := s.keys.mintCeremonyProof(survivor) |
| 106 | absProof := s.keys.mintCeremonyProof(absorbed) |
| 107 | r := do(t, "POST", ts.URL+"/api/account/merge", survTok, |
| 108 | map[string]string{"X-Ceremony-Proof": survProof}, mergeBody(t, absProof)) |
| 109 | if r.StatusCode != http.StatusConflict { |
| 110 | t.Fatalf("merge with absorbed blob: want 409, got %d", r.StatusCode) |
| 111 | } |
| 112 | if uid, ok := s.store.emailUser("still-here"); !ok || uid != absorbed { |
| 113 | t.Fatalf("refused merge moved an anchor: (%q, %v)", uid, ok) |
| 114 | } |
| 115 | // Once the client deletes the absorbed blob (the ceremony-gated path), |
| 116 | // the same call goes through. |
| 117 | if r := do(t, "DELETE", ts.URL+"/api/blob", "", map[string]string{"X-Ceremony-Proof": absProof}, nil); r.StatusCode != http.StatusOK { |
| 118 | t.Fatalf("absorbed blob delete: want 200, got %d", r.StatusCode) |
| 119 | } |
| 120 | r = do(t, "POST", ts.URL+"/api/account/merge", survTok, |
| 121 | map[string]string{"X-Ceremony-Proof": survProof}, mergeBody(t, absProof)) |
| 122 | if r.StatusCode != http.StatusOK { |
| 123 | t.Fatalf("merge after blob delete: want 200, got %d", r.StatusCode) |
| 124 | } |
| 125 | } |
| 126 | |
| 127 | func TestAccountMergeSameAccount(t *testing.T) { |
| 128 | ts, s := newTestServer(t) |
| 129 | survivor, survTok := seedUser(t, s) |
| 130 | proof := s.keys.mintCeremonyProof(survivor) |
| 131 | // An absorb proof for the bearer's own account is a 400, not a merge. |
| 132 | r := do(t, "POST", ts.URL+"/api/account/merge", survTok, |
| 133 | map[string]string{"X-Ceremony-Proof": proof}, mergeBody(t, proof)) |
| 134 | if r.StatusCode != http.StatusBadRequest { |
| 135 | t.Fatalf("same-account merge: want 400, got %d", r.StatusCode) |
| 136 | } |
| 137 | if !s.store.(*sqliteStore).userExists(survivor) { |
| 138 | t.Fatalf("same-account merge deleted the account") |
| 139 | } |
| 140 | } |
| 141 | |
| 142 | func TestAccountMergeAuthGating(t *testing.T) { |
| 143 | ts, s := newTestServer(t) |
| 144 | survivor, survTok := seedUser(t, s) |
| 145 | absorbed, _ := seedUser(t, s) |
| 146 | survProof := s.keys.mintCeremonyProof(survivor) |
| 147 | absProof := s.keys.mintCeremonyProof(absorbed) |
| 148 | |
| 149 | // Both survivor-side headers are required: the link token names the |
| 150 | // account, the fresh proof authorises the access change. |
| 151 | if r := do(t, "POST", ts.URL+"/api/account/merge", "", |
| 152 | map[string]string{"X-Ceremony-Proof": survProof}, mergeBody(t, absProof)); r.StatusCode != http.StatusUnauthorized { |
| 153 | t.Fatalf("no bearer: want 401, got %d", r.StatusCode) |
| 154 | } |
| 155 | if r := do(t, "POST", ts.URL+"/api/account/merge", survTok, nil, mergeBody(t, absProof)); r.StatusCode != http.StatusUnauthorized { |
| 156 | t.Fatalf("no ceremony proof: want 401, got %d", r.StatusCode) |
| 157 | } |
| 158 | // A proof for a DIFFERENT account than the bearer's is refused — it isn't |
| 159 | // the survivor's ceremony. |
| 160 | if r := do(t, "POST", ts.URL+"/api/account/merge", survTok, |
| 161 | map[string]string{"X-Ceremony-Proof": absProof}, mergeBody(t, absProof)); r.StatusCode != http.StatusUnauthorized { |
| 162 | t.Fatalf("mismatched proof: want 401, got %d", r.StatusCode) |
| 163 | } |
| 164 | // Stale proofs — either side — are refused. |
| 165 | staleSurv := s.keys.mintCeremonyProofAt(survivor, time.Now().Add(-time.Minute)) |
| 166 | if r := do(t, "POST", ts.URL+"/api/account/merge", survTok, |
| 167 | map[string]string{"X-Ceremony-Proof": staleSurv}, mergeBody(t, absProof)); r.StatusCode != http.StatusUnauthorized { |
| 168 | t.Fatalf("stale survivor proof: want 401, got %d", r.StatusCode) |
| 169 | } |
| 170 | staleAbs := s.keys.mintCeremonyProofAt(absorbed, time.Now().Add(-time.Minute)) |
| 171 | if r := do(t, "POST", ts.URL+"/api/account/merge", survTok, |
| 172 | map[string]string{"X-Ceremony-Proof": survProof}, mergeBody(t, staleAbs)); r.StatusCode != http.StatusUnauthorized { |
| 173 | t.Fatalf("stale absorb proof: want 401, got %d", r.StatusCode) |
| 174 | } |
| 175 | if r := do(t, "POST", ts.URL+"/api/account/merge", survTok, |
| 176 | map[string]string{"X-Ceremony-Proof": survProof}, mergeBody(t, "garbage")); r.StatusCode != http.StatusUnauthorized { |
| 177 | t.Fatalf("garbage absorb proof: want 401, got %d", r.StatusCode) |
| 178 | } |
| 179 | // A missing/empty absorb_proof is a 400 (bad request, not bad auth). |
| 180 | if r := do(t, "POST", ts.URL+"/api/account/merge", survTok, |
| 181 | map[string]string{"X-Ceremony-Proof": survProof}, []byte(`{}`)); r.StatusCode != http.StatusBadRequest { |
| 182 | t.Fatalf("missing absorb_proof: want 400, got %d", r.StatusCode) |
| 183 | } |
| 184 | // Nothing above moved anything. |
| 185 | if creds, _ := s.store.credentialsFor(absorbed); len(creds) != 1 { |
| 186 | t.Fatalf("refused merges moved credentials: %d", len(creds)) |
| 187 | } |
| 188 | } |
| 189 | |
| 190 | // The last-method guard interacts naturally with a merge: the survivor gains |
| 191 | // the absorbed account's methods, so a passkey it couldn't shed before (its |
| 192 | // only way in) may go afterwards — and the merged-in anchor then becomes the |
| 193 | // last method itself. |
| 194 | func TestAccountMergeLastMethodAfterMerge(t *testing.T) { |
| 195 | ts, s := newTestServer(t) |
| 196 | survivor, survTok := seedUser(t, s) |
| 197 | absorbed, _ := seedUser(t, s) |
| 198 | s.store.insertEmailAnchor(absorbed, "merged-email") |
| 199 | survProof := s.keys.mintCeremonyProof(survivor) |
| 200 | |
| 201 | creds, _ := s.store.credentialsFor(survivor) |
| 202 | survCredID := b64CredID(string(creds[0].ID)) |
| 203 | // Pre-merge: the survivor's only method can't be removed. |
| 204 | if r := do(t, "DELETE", ts.URL+"/api/anchors/passkey/"+survCredID, "", |
| 205 | map[string]string{"X-Ceremony-Proof": survProof}, nil); r.StatusCode != http.StatusConflict { |
| 206 | t.Fatalf("pre-merge last passkey: want 409, got %d", r.StatusCode) |
| 207 | } |
| 208 | |
| 209 | absProof := s.keys.mintCeremonyProof(absorbed) |
| 210 | if r := do(t, "POST", ts.URL+"/api/account/merge", survTok, |
| 211 | map[string]string{"X-Ceremony-Proof": survProof}, mergeBody(t, absProof)); r.StatusCode != http.StatusOK { |
| 212 | t.Fatalf("merge: want 200, got %d", r.StatusCode) |
| 213 | } |
| 214 | |
| 215 | // Post-merge the account holds 2 passkeys + 1 email anchor: both passkeys |
| 216 | // may go now… |
| 217 | absCreds, _ := s.store.credentialsFor(survivor) |
| 218 | for _, c := range absCreds { |
| 219 | id := b64CredID(string(c.ID)) |
| 220 | if r := do(t, "DELETE", ts.URL+"/api/anchors/passkey/"+id, "", |
| 221 | map[string]string{"X-Ceremony-Proof": survProof}, nil); r.StatusCode != http.StatusOK { |
| 222 | t.Fatalf("post-merge passkey delete: want 200, got %d", r.StatusCode) |
| 223 | } |
| 224 | } |
| 225 | // …until the merged-in email anchor is the last way in. |
| 226 | if r := do(t, "DELETE", ts.URL+"/api/anchors/email/merged-email", "", |
| 227 | map[string]string{"X-Ceremony-Proof": survProof}, nil); r.StatusCode != http.StatusConflict { |
| 228 | t.Fatalf("merged anchor as last method: want 409, got %d", r.StatusCode) |
| 229 | } |
| 230 | } |
| 231 | |
amadan