|
| 1 | +package mocks |
| 2 | + |
| 3 | +import ( |
| 4 | + "crypto/ed25519" |
| 5 | + "crypto/rand" |
| 6 | + "encoding/json" |
| 7 | + "net/http" |
| 8 | + "net/http/httptest" |
| 9 | + "testing" |
| 10 | + "time" |
| 11 | + |
| 12 | + "github.com/stretchr/testify/require" |
| 13 | + "golang.org/x/crypto/ssh" |
| 14 | + "golang.org/x/exp/slices" |
| 15 | +) |
| 16 | + |
| 17 | +var ValidAPITokens = []string{"api-token-1"} |
| 18 | +var accessTokens = []string{"access-token-1"} |
| 19 | + |
| 20 | +// NewAuthServer creates a new mock authentication server. |
| 21 | +// The caller must call Close() on the server when finished. |
| 22 | +func NewAuthServer(t *testing.T) *httptest.Server { |
| 23 | + return httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) { |
| 24 | + if testing.Verbose() { |
| 25 | + t.Log(req) |
| 26 | + } |
| 27 | + if req.Method == http.MethodPost && req.URL.Path == "/oauth2/token" { |
| 28 | + require.NoError(t, req.ParseForm()) |
| 29 | + if gt := req.Form.Get("grant_type"); gt != "api_token" { |
| 30 | + w.WriteHeader(http.StatusBadRequest) |
| 31 | + _ = json.NewEncoder(w).Encode(map[string]string{"error": "invalid grant type: " + gt}) |
| 32 | + return |
| 33 | + } |
| 34 | + apiToken := req.Form.Get("api_token") |
| 35 | + if slices.Contains(ValidAPITokens, apiToken) { |
| 36 | + _ = json.NewEncoder(w).Encode(struct { |
| 37 | + AccessToken string `json:"access_token"` |
| 38 | + ExpiresIn int `json:"expires_in"` |
| 39 | + Type string `json:"token_type"` |
| 40 | + }{AccessToken: accessTokens[0], ExpiresIn: 60, Type: "bearer"}) |
| 41 | + return |
| 42 | + } |
| 43 | + w.WriteHeader(http.StatusBadRequest) |
| 44 | + _ = json.NewEncoder(w).Encode(map[string]string{"error": "invalid API token"}) |
| 45 | + return |
| 46 | + } |
| 47 | + |
| 48 | + if req.Method == http.MethodPost && req.URL.Path == "/ssh" { |
| 49 | + var options struct { |
| 50 | + PublicKey string `json:"key"` |
| 51 | + } |
| 52 | + err := json.NewDecoder(req.Body).Decode(&options) |
| 53 | + require.NoError(t, err) |
| 54 | + key, _, _, _, err := ssh.ParseAuthorizedKey([]byte(options.PublicKey)) |
| 55 | + require.NoError(t, err) |
| 56 | + signer, err := sshSigner() |
| 57 | + require.NoError(t, err) |
| 58 | + extensions := make(map[string]string) |
| 59 | + |
| 60 | + // Add standard ssh options |
| 61 | + extensions["permit-X11-forwarding"] = "" |
| 62 | + extensions["permit-agent-forwarding"] = "" |
| 63 | + extensions["permit-port-forwarding"] = "" |
| 64 | + extensions["permit-pty"] = "" |
| 65 | + extensions["permit-user-rc"] = "" |
| 66 | + cert := &ssh.Certificate{ |
| 67 | + Key: key, |
| 68 | + Serial: 0, |
| 69 | + CertType: ssh.UserCert, |
| 70 | + KeyId: "test-key-id", |
| 71 | + ValidAfter: uint64(time.Now().Add(-1 * time.Second).Unix()), |
| 72 | + ValidBefore: uint64(time.Now().Add(time.Minute).Unix()), |
| 73 | + Permissions: ssh.Permissions{ |
| 74 | + Extensions: extensions, |
| 75 | + }, |
| 76 | + } |
| 77 | + err = cert.SignCert(rand.Reader, signer) |
| 78 | + require.NoError(t, err) |
| 79 | + _ = json.NewEncoder(w).Encode(struct { |
| 80 | + Cert string `json:"certificate"` |
| 81 | + }{string(ssh.MarshalAuthorizedKey(cert))}) |
| 82 | + require.NoError(t, err) |
| 83 | + return |
| 84 | + } |
| 85 | + |
| 86 | + w.WriteHeader(http.StatusNotFound) |
| 87 | + _ = json.NewEncoder(w).Encode(map[string]string{"error": "not found"}) |
| 88 | + })) |
| 89 | +} |
| 90 | + |
| 91 | +func sshSigner() (ssh.Signer, error) { |
| 92 | + _, privateKey, err := ed25519.GenerateKey(rand.Reader) |
| 93 | + if err != nil { |
| 94 | + return nil, err |
| 95 | + } |
| 96 | + return ssh.NewSignerFromKey(privateKey) |
| 97 | +} |
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