| 1 | package edge |
| 2 | |
| 3 | import ( |
| 4 | "context" |
| 5 | "encoding/json" |
| 6 | "errors" |
| 7 | "fmt" |
| 8 | "net/http" |
| 9 | "net/http/httptest" |
| 10 | "reflect" |
| 11 | "testing" |
| 12 | ) |
| 13 | |
| 14 | func TestSplitDomains(t *testing.T) { |
| 15 | cases := []struct { |
| 16 | in string |
| 17 | want []string |
| 18 | }{ |
| 19 | {"", nil}, |
| 20 | {"go.tito.io", []string{"go.tito.io"}}, |
| 21 | {" Go.Tito.IO , dev.oncarlos.com ,", []string{"go.tito.io", "dev.oncarlos.com"}}, |
| 22 | } |
| 23 | for _, c := range cases { |
| 24 | if got := splitDomains(c.in); !reflect.DeepEqual(got, c.want) { |
| 25 | t.Errorf("splitDomains(%q) = %v, want %v", c.in, got, c.want) |
| 26 | } |
| 27 | } |
| 28 | } |
| 29 | |
| 30 | func TestDNSProviderSelection(t *testing.T) { |
| 31 | t.Setenv("CARLOS_DNS_PROVIDER", "") |
| 32 | t.Setenv("CARLOS_DNSIMPLE_TOKEN", "") |
| 33 | if p, reason := dnsProviderFromEnv(); p != nil || reason == "" { |
| 34 | t.Fatalf("unset env: want (nil, reason), got (%v, %q)", p, reason) |
| 35 | } |
| 36 | t.Setenv("CARLOS_DNSIMPLE_TOKEN", "tok") |
| 37 | if p, reason := dnsProviderFromEnv(); p == nil { |
| 38 | t.Fatalf("token set: want dnsimple provider, got nil (%s)", reason) |
| 39 | } else if _, ok := p.(*dnsimpleDNS); !ok { |
| 40 | t.Fatalf("token set: want *dnsimpleDNS, got %T", p) |
| 41 | } |
| 42 | t.Setenv("CARLOS_DNS_PROVIDER", "bogus") |
| 43 | if p, reason := dnsProviderFromEnv(); p != nil || reason == "" { |
| 44 | t.Fatalf("bogus provider: want (nil, reason), got (%v, %q)", p, reason) |
| 45 | } |
| 46 | // route53 selection is exercised in route53dns_test.go — constructing it |
| 47 | // here would hit the AWS credential chain. |
| 48 | } |
| 49 | |
| 50 | // fakeDNSimple is a minimal DNSimple v2 API: whoami, per-zone existence, |
| 51 | // record create/delete. It records mutations for assertions. |
| 52 | type fakeDNSimple struct { |
| 53 | zones map[string]bool // zone name → exists (200) |
| 54 | forbidden map[string]bool // zone name → exists but not owned by this account (403) |
| 55 | created []string // "zone|name|content" |
| 56 | deleted []int64 |
| 57 | nextID int64 |
| 58 | } |
| 59 | |
| 60 | // handler wires the mux and wraps it in an auth-checking middleware so the |
| 61 | // Authorization header is asserted on every request — whoami, zone lookup, |
| 62 | // record create, AND record delete — not just whoami. |
| 63 | func (f *fakeDNSimple) handler(t *testing.T) http.Handler { |
| 64 | mux := http.NewServeMux() |
| 65 | mux.HandleFunc("GET /v2/whoami", func(w http.ResponseWriter, r *http.Request) { |
| 66 | fmt.Fprint(w, `{"data":{"account":{"id":42}}}`) |
| 67 | }) |
| 68 | mux.HandleFunc("GET /v2/42/zones/{zone}", func(w http.ResponseWriter, r *http.Request) { |
| 69 | zone := r.PathValue("zone") |
| 70 | switch { |
| 71 | case f.zones[zone]: |
| 72 | fmt.Fprintf(w, `{"data":{"name":%q}}`, zone) |
| 73 | case f.forbidden[zone]: |
| 74 | // A zone that exists but isn't owned by this account's token: |
| 75 | // DNSimple answers 403, not 404. |
| 76 | http.Error(w, `{"message":"forbidden"}`, 403) |
| 77 | default: |
| 78 | http.Error(w, `{"message":"not found"}`, 404) |
| 79 | } |
| 80 | }) |
| 81 | mux.HandleFunc("POST /v2/42/zones/{zone}/records", func(w http.ResponseWriter, r *http.Request) { |
| 82 | var body struct { |
| 83 | Name, Type, Content string |
| 84 | TTL int |
| 85 | } |
| 86 | if err := json.NewDecoder(r.Body).Decode(&body); err != nil { |
| 87 | t.Errorf("create record body: %v", err) |
| 88 | } |
| 89 | if body.Type != "TXT" { |
| 90 | t.Errorf("create record type = %q, want TXT", body.Type) |
| 91 | } |
| 92 | if body.TTL != 60 { |
| 93 | t.Errorf("create record ttl = %d, want 60", body.TTL) |
| 94 | } |
| 95 | f.nextID++ |
| 96 | f.created = append(f.created, fmt.Sprintf("%s|%s|%s", r.PathValue("zone"), body.Name, body.Content)) |
| 97 | w.WriteHeader(201) |
| 98 | fmt.Fprintf(w, `{"data":{"id":%d}}`, f.nextID) |
| 99 | }) |
| 100 | mux.HandleFunc("DELETE /v2/42/zones/{zone}/records/{id}", func(w http.ResponseWriter, r *http.Request) { |
| 101 | var id int64 |
| 102 | fmt.Sscan(r.PathValue("id"), &id) |
| 103 | f.deleted = append(f.deleted, id) |
| 104 | w.WriteHeader(204) |
| 105 | }) |
| 106 | return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { |
| 107 | if r.Header.Get("Authorization") != "Bearer tok" { |
| 108 | t.Errorf("%s %s auth header = %q", r.Method, r.URL.Path, r.Header.Get("Authorization")) |
| 109 | } |
| 110 | mux.ServeHTTP(w, r) |
| 111 | }) |
| 112 | } |
| 113 | |
| 114 | // The per-account adaptation: the zone is discovered by suffix-walking fqdn |
| 115 | // against the API, so a challenge under abs.oncarlos.com lands in the |
| 116 | // oncarlos.com zone with the account label in the record NAME. |
| 117 | func TestDNSimplePresentDiscoversZone(t *testing.T) { |
| 118 | fake := &fakeDNSimple{zones: map[string]bool{"oncarlos.com": true}} |
| 119 | srv := httptest.NewServer(fake.handler(t)) |
| 120 | defer srv.Close() |
| 121 | t.Setenv("CARLOS_DNSIMPLE_BASE", srv.URL) |
| 122 | |
| 123 | d := newDNSimpleDNS("tok") |
| 124 | cleanup, err := d.present(context.Background(), "_acme-challenge.abs.oncarlos.com", "txtvalue") |
| 125 | if err != nil { |
| 126 | t.Fatalf("present: %v", err) |
| 127 | } |
| 128 | want := []string{"oncarlos.com|_acme-challenge.abs|txtvalue"} |
| 129 | if !reflect.DeepEqual(fake.created, want) { |
| 130 | t.Fatalf("created = %v, want %v", fake.created, want) |
| 131 | } |
| 132 | if err := cleanup(context.Background()); err != nil { |
| 133 | t.Fatalf("cleanup: %v", err) |
| 134 | } |
| 135 | if !reflect.DeepEqual(fake.deleted, []int64{1}) { |
| 136 | t.Fatalf("deleted = %v, want [1]", fake.deleted) |
| 137 | } |
| 138 | } |
| 139 | |
| 140 | // A 403 means "this zone exists but your token doesn't own it" — DNSimple's |
| 141 | // real API answers Forbidden, not NotFound, for zones outside the account. |
| 142 | // The walk must treat that the same as a 404 (keep walking) rather than |
| 143 | // aborting, or flagship would never discover oncarlos.com if an intermediate |
| 144 | // suffix candidate happened to be a zone owned by a different account. |
| 145 | func TestDNSimplePresentSkipsForbiddenAndNotFoundZones(t *testing.T) { |
| 146 | fake := &fakeDNSimple{ |
| 147 | zones: map[string]bool{"oncarlos.com": true}, |
| 148 | forbidden: map[string]bool{"x.abs.oncarlos.com": true}, |
| 149 | // "abs.oncarlos.com" is in neither map, so it 404s (not found). |
| 150 | } |
| 151 | srv := httptest.NewServer(fake.handler(t)) |
| 152 | defer srv.Close() |
| 153 | t.Setenv("CARLOS_DNSIMPLE_BASE", srv.URL) |
| 154 | |
| 155 | d := newDNSimpleDNS("tok") |
| 156 | cleanup, err := d.present(context.Background(), "_acme-challenge.x.abs.oncarlos.com", "txtvalue") |
| 157 | if err != nil { |
| 158 | t.Fatalf("present: %v", err) |
| 159 | } |
| 160 | want := []string{"oncarlos.com|_acme-challenge.x.abs|txtvalue"} |
| 161 | if !reflect.DeepEqual(fake.created, want) { |
| 162 | t.Fatalf("created = %v, want %v", fake.created, want) |
| 163 | } |
| 164 | if err := cleanup(context.Background()); err != nil { |
| 165 | t.Fatalf("cleanup: %v", err) |
| 166 | } |
| 167 | } |
| 168 | |
| 169 | func TestDNSimplePresentNoZone(t *testing.T) { |
| 170 | fake := &fakeDNSimple{zones: map[string]bool{}} |
| 171 | srv := httptest.NewServer(fake.handler(t)) |
| 172 | defer srv.Close() |
| 173 | t.Setenv("CARLOS_DNSIMPLE_BASE", srv.URL) |
| 174 | |
| 175 | d := newDNSimpleDNS("tok") |
| 176 | if _, err := d.present(context.Background(), "_acme-challenge.abs.nowhere.example", "v"); err == nil { |
| 177 | t.Fatal("present with no owning zone: want error, got nil") |
| 178 | } |
| 179 | } |
| 180 | |
| 181 | // checkZone answers from the same suffix walk present uses, writes nothing, |
| 182 | // and reports a missing zone as errNoZone. |
| 183 | func TestDNSimpleCheckZone(t *testing.T) { |
| 184 | fake := &fakeDNSimple{zones: map[string]bool{"letsjelly.dev": true}} |
| 185 | srv := httptest.NewServer(fake.handler(t)) |
| 186 | defer srv.Close() |
| 187 | t.Setenv("CARLOS_DNSIMPLE_BASE", srv.URL) |
| 188 | |
| 189 | d := newDNSimpleDNS("tok") |
| 190 | if err := d.checkZone(context.Background(), "_acme-challenge.letsjelly.dev"); err != nil { |
| 191 | t.Fatalf("held zone: %v", err) |
| 192 | } |
| 193 | err := d.checkZone(context.Background(), "_acme-challenge.bad.carlos.exciting.io") |
| 194 | if !errors.Is(err, errNoZone) { |
| 195 | t.Fatalf("missing zone: err = %v, want errNoZone", err) |
| 196 | } |
| 197 | if len(fake.created) != 0 || len(fake.deleted) != 0 { |
| 198 | t.Fatalf("checkZone wrote records: created %v, deleted %v", fake.created, fake.deleted) |
| 199 | } |
| 200 | } |
| 201 | |
amadan