|
| 1 | +package auth |
| 2 | + |
| 3 | +import ( |
| 4 | + "context" |
| 5 | + "fmt" |
| 6 | + "log/slog" |
| 7 | + "net/http" |
| 8 | + "net/url" |
| 9 | + "strings" |
| 10 | + |
| 11 | + hydra "github.com/ory/hydra-client-go/v2" |
| 12 | +) |
| 13 | + |
| 14 | +// HydraClientManager is a ClientManager for a hydra server |
| 15 | +type HydraClientManager struct { |
| 16 | + hydraAdmin *hydra.APIClient |
| 17 | + logger *slog.Logger |
| 18 | +} |
| 19 | + |
| 20 | +// NewHydraClientManager creates a new HydraClientManager |
| 21 | +func NewHydraClientManager(adminURL string, logger *slog.Logger) *HydraClientManager { |
| 22 | + hydraConfig := hydra.NewConfiguration() |
| 23 | + hydraConfig.Servers = []hydra.ServerConfiguration{ |
| 24 | + { |
| 25 | + URL: adminURL, |
| 26 | + }, |
| 27 | + } |
| 28 | + |
| 29 | + return &HydraClientManager{ |
| 30 | + hydraAdmin: hydra.NewAPIClient(hydraConfig), |
| 31 | + logger: logger, |
| 32 | + } |
| 33 | +} |
| 34 | + |
| 35 | +// CreateClient creates a new client |
| 36 | +func (h *HydraClientManager) CreateClient(ctx context.Context, clientInfo ClientInfo) (ClientInfo, error) { |
| 37 | + newClient := hydra.OAuth2Client{ |
| 38 | + ClientId: &clientInfo.ClientID, |
| 39 | + Scope: &clientInfo.Scope, |
| 40 | + GrantTypes: []string{"client_credentials"}, |
| 41 | + } |
| 42 | + if clientInfo.ClientSecret != "" { |
| 43 | + newClient.ClientSecret = &clientInfo.ClientSecret |
| 44 | + } |
| 45 | + |
| 46 | + createdClient, response, err := h.hydraAdmin.OAuth2API.CreateOAuth2Client(ctx).OAuth2Client(newClient).Execute() |
| 47 | + if response != nil { |
| 48 | + defer func() { |
| 49 | + if err := response.Body.Close(); err != nil { |
| 50 | + h.logger.Error("failed to close response body", "error", err) |
| 51 | + } |
| 52 | + }() |
| 53 | + } |
| 54 | + if response.StatusCode == 409 { |
| 55 | + return ClientInfo{}, fmt.Errorf("failed to create client: client with id %s already exists", *newClient.ClientId) |
| 56 | + } |
| 57 | + if response.StatusCode == 400 { |
| 58 | + return ClientInfo{}, fmt.Errorf("failed to create client: invalid request") |
| 59 | + } |
| 60 | + if response.StatusCode != 201 { |
| 61 | + return ClientInfo{}, fmt.Errorf("failed to create client: status=%s", response.Status) |
| 62 | + } |
| 63 | + // these can be confusing and related to internal client failures, so handled after http status codes |
| 64 | + if err != nil { |
| 65 | + return ClientInfo{}, fmt.Errorf("failed to create client: %w", err) |
| 66 | + } |
| 67 | + |
| 68 | + return clientInfoFromHydraClient(createdClient), nil |
| 69 | +} |
| 70 | + |
| 71 | +// DeleteClientByID deletes a client by id |
| 72 | +func (h *HydraClientManager) DeleteClientByID(ctx context.Context, clientID string) error { |
| 73 | + response, err := h.hydraAdmin.OAuth2API.DeleteOAuth2Client(ctx, clientID).Execute() |
| 74 | + if response != nil { |
| 75 | + defer func() { |
| 76 | + if err := response.Body.Close(); err != nil { |
| 77 | + h.logger.Error("failed to close response body", "error", err) |
| 78 | + } |
| 79 | + }() |
| 80 | + } |
| 81 | + |
| 82 | + if response.StatusCode == 404 { |
| 83 | + return fmt.Errorf("client %s not found", clientID) |
| 84 | + } |
| 85 | + if response.StatusCode != 204 { |
| 86 | + return fmt.Errorf("failed to delete client from hydra: status=%s", response.Status) |
| 87 | + } |
| 88 | + // these can be confusing and related to internal client failures, so handled after http status codes |
| 89 | + if err != nil { |
| 90 | + return fmt.Errorf("failed to delete client from hydra: %w", err) |
| 91 | + } |
| 92 | + |
| 93 | + return nil |
| 94 | +} |
| 95 | + |
| 96 | +// RetrieveClientByID retrieves a client by id |
| 97 | +func (h *HydraClientManager) RetrieveClientByID(ctx context.Context, clientID string) (ClientInfo, error) { |
| 98 | + client, response, err := h.hydraAdmin.OAuth2API.GetOAuth2Client(ctx, clientID).Execute() |
| 99 | + if response != nil { |
| 100 | + defer func() { |
| 101 | + if err := response.Body.Close(); err != nil { |
| 102 | + h.logger.Error("failed to close response body", "error", err) |
| 103 | + } |
| 104 | + }() |
| 105 | + } |
| 106 | + |
| 107 | + if response.StatusCode == 404 { |
| 108 | + return ClientInfo{}, fmt.Errorf("client %s not found", clientID) |
| 109 | + } |
| 110 | + if response.StatusCode != 200 { |
| 111 | + return ClientInfo{}, fmt.Errorf("failed to retrieve client: status=%s", response.Status) |
| 112 | + } |
| 113 | + // these tend to be confusing and related to internal client failures, so handled after http status codes |
| 114 | + if err != nil { |
| 115 | + return ClientInfo{}, fmt.Errorf("failed to retrieve client: %w", err) |
| 116 | + } |
| 117 | + |
| 118 | + return clientInfoFromHydraClient(client), nil |
| 119 | +} |
| 120 | + |
| 121 | +// RetrieveClients retrieves a list of clients |
| 122 | +func (h *HydraClientManager) RetrieveClients(ctx context.Context, q RetrieveClientsRequest) (RetrieveClientsResponse, error) { |
| 123 | + var out RetrieveClientsResponse |
| 124 | + |
| 125 | + clients, response, err := h.hydraAdmin.OAuth2API.ListOAuth2Clients(ctx).PageToken(q.PageToken).Execute() |
| 126 | + if response != nil { |
| 127 | + defer func() { |
| 128 | + if err := response.Body.Close(); err != nil { |
| 129 | + h.logger.Error("failed to close response body", "error", err) |
| 130 | + } |
| 131 | + }() |
| 132 | + } |
| 133 | + if response.StatusCode != 200 { |
| 134 | + return out, fmt.Errorf("failed to retrieve clients: status=%s", response.Status) |
| 135 | + } |
| 136 | + // these can be confusing and related to internal client failures, so handled after http status codes |
| 137 | + if err != nil { |
| 138 | + return out, fmt.Errorf("failed to retrieve clients: %w", err) |
| 139 | + } |
| 140 | + |
| 141 | + out.Clients = make([]ClientInfo, 0, len(clients)) |
| 142 | + for _, client := range clients { |
| 143 | + out.Clients = append(out.Clients, clientInfoFromHydraClient(&client)) |
| 144 | + } |
| 145 | + |
| 146 | + out.NextPageToken = getHydraNextPageToken(response, h.logger) |
| 147 | + return out, nil |
| 148 | +} |
| 149 | + |
| 150 | +func clientInfoFromHydraClient(client *hydra.OAuth2Client) ClientInfo { |
| 151 | + var clientInfo ClientInfo |
| 152 | + |
| 153 | + if client == nil { |
| 154 | + return clientInfo |
| 155 | + } |
| 156 | + |
| 157 | + if client.ClientId != nil { |
| 158 | + clientInfo.ClientID = *client.ClientId |
| 159 | + } |
| 160 | + if client.Scope != nil { |
| 161 | + clientInfo.Scope = *client.Scope |
| 162 | + } |
| 163 | + |
| 164 | + return clientInfo |
| 165 | +} |
| 166 | + |
| 167 | +func getHydraNextPageToken(response *http.Response, logger *slog.Logger) string { |
| 168 | + for _, linkHeader := range response.Header.Values("Link") { |
| 169 | + params := strings.Split(linkHeader, ";") |
| 170 | + link := params[0] |
| 171 | + params = params[1:] |
| 172 | + // search for rel="next" |
| 173 | + for _, param := range params { |
| 174 | + vs := strings.Split(param, "=") |
| 175 | + if len(vs) != 2 { |
| 176 | + continue |
| 177 | + } |
| 178 | + k, v := strings.TrimSpace(vs[0]), strings.TrimSpace(vs[1]) |
| 179 | + if k == "rel" && (v == "next" || v == "\"next\"") { |
| 180 | + parsedURL, err := url.Parse(link) |
| 181 | + if err != nil { |
| 182 | + logger.Warn("failed to parse url in rel=next link", "error", err, "link", linkHeader) |
| 183 | + return "" |
| 184 | + } |
| 185 | + queryParams := parsedURL.Query() |
| 186 | + for key, values := range queryParams { |
| 187 | + if key == "page_token" { |
| 188 | + return values[0] |
| 189 | + } |
| 190 | + } |
| 191 | + logger.Warn("failed to find next page token in rel=next url", "link", linkHeader) |
| 192 | + return "" |
| 193 | + } |
| 194 | + } |
| 195 | + } |
| 196 | + return "" |
| 197 | +} |
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