p2p/dnsdisc: add implementation of EIP-1459 (#20094)

This adds an implementation of node discovery via DNS TXT records to the
go-ethereum library. The implementation doesn't match EIP-1459 exactly,
the main difference being that this implementation uses separate merkle
trees for tree links and ENRs. The EIP will be updated to match p2p/dnsdisc.

To maintain DNS trees, cmd/devp2p provides a frontend for the p2p/dnsdisc
library. The new 'dns' subcommands can be used to create, sign and deploy DNS
discovery trees.

vendor/github.com/cloudflare/cloudflare-go/access_service_tokens.go

@@ -0,0 +1,167 @@
+package cloudflare
+
+import (
+	"encoding/json"
+	"fmt"
+	"time"
+
+	"github.com/pkg/errors"
+)
+
+// AccessServiceToken represents an Access Service Token.
+type AccessServiceToken struct {
+	ClientID  string     `json:"client_id"`
+	CreatedAt *time.Time `json:"created_at"`
+	ExpiresAt *time.Time `json:"expires_at"`
+	ID        string     `json:"id"`
+	Name      string     `json:"name"`
+	UpdatedAt *time.Time `json:"updated_at"`
+}
+
+// AccessServiceTokenUpdateResponse represents the response from the API
+// when a new Service Token is updated. This base struct is also used in the
+// Create as they are very similar responses.
+type AccessServiceTokenUpdateResponse struct {
+	CreatedAt *time.Time `json:"created_at"`
+	UpdatedAt *time.Time `json:"updated_at"`
+	ID        string     `json:"id"`
+	Name      string     `json:"name"`
+	ClientID  string     `json:"client_id"`
+}
+
+// AccessServiceTokenCreateResponse is the same API response as the Update
+// operation with the exception that the `ClientSecret` is present in a
+// Create operation.
+type AccessServiceTokenCreateResponse struct {
+	CreatedAt    *time.Time `json:"created_at"`
+	UpdatedAt    *time.Time `json:"updated_at"`
+	ID           string     `json:"id"`
+	Name         string     `json:"name"`
+	ClientID     string     `json:"client_id"`
+	ClientSecret string     `json:"client_secret"`
+}
+
+// AccessServiceTokensListResponse represents the response from the list
+// Access Service Tokens endpoint.
+type AccessServiceTokensListResponse struct {
+	Result []AccessServiceToken `json:"result"`
+	Response
+	ResultInfo `json:"result_info"`
+}
+
+// AccessServiceTokensDetailResponse is the API response, containing a single
+// Access Service Token.
+type AccessServiceTokensDetailResponse struct {
+	Success  bool               `json:"success"`
+	Errors   []string           `json:"errors"`
+	Messages []string           `json:"messages"`
+	Result   AccessServiceToken `json:"result"`
+}
+
+// AccessServiceTokensCreationDetailResponse is the API response, containing a
+// single Access Service Token.
+type AccessServiceTokensCreationDetailResponse struct {
+	Success  bool                             `json:"success"`
+	Errors   []string                         `json:"errors"`
+	Messages []string                         `json:"messages"`
+	Result   AccessServiceTokenCreateResponse `json:"result"`
+}
+
+// AccessServiceTokensUpdateDetailResponse is the API response, containing a
+// single Access Service Token.
+type AccessServiceTokensUpdateDetailResponse struct {
+	Success  bool                             `json:"success"`
+	Errors   []string                         `json:"errors"`
+	Messages []string                         `json:"messages"`
+	Result   AccessServiceTokenUpdateResponse `json:"result"`
+}
+
+// AccessServiceTokens returns all Access Service Tokens for an account.
+//
+// API reference: https://api.cloudflare.com/#access-service-tokens-list-access-service-tokens
+func (api *API) AccessServiceTokens(accountID string) ([]AccessServiceToken, ResultInfo, error) {
+	uri := "/accounts/" + accountID + "/access/service_tokens"
+
+	res, err := api.makeRequest("GET", uri, nil)
+	if err != nil {
+		return []AccessServiceToken{}, ResultInfo{}, errors.Wrap(err, errMakeRequestError)
+	}
+
+	var accessServiceTokensListResponse AccessServiceTokensListResponse
+	err = json.Unmarshal(res, &accessServiceTokensListResponse)
+	if err != nil {
+		return []AccessServiceToken{}, ResultInfo{}, errors.Wrap(err, errUnmarshalError)
+	}
+
+	return accessServiceTokensListResponse.Result, accessServiceTokensListResponse.ResultInfo, nil
+}
+
+// CreateAccessServiceToken creates a new Access Service Token for an account.
+//
+// API reference: https://api.cloudflare.com/#access-service-tokens-create-access-service-token
+func (api *API) CreateAccessServiceToken(accountID, name string) (AccessServiceTokenCreateResponse, error) {
+	uri := "/accounts/" + accountID + "/access/service_tokens"
+	marshalledName, _ := json.Marshal(struct {
+		Name string `json:"name"`
+	}{name})
+
+	res, err := api.makeRequest("POST", uri, marshalledName)
+
+	if err != nil {
+		return AccessServiceTokenCreateResponse{}, errors.Wrap(err, errMakeRequestError)
+	}
+
+	var accessServiceTokenCreation AccessServiceTokensCreationDetailResponse
+	err = json.Unmarshal(res, &accessServiceTokenCreation)
+	if err != nil {
+		return AccessServiceTokenCreateResponse{}, errors.Wrap(err, errUnmarshalError)
+	}
+
+	return accessServiceTokenCreation.Result, nil
+}
+
+// UpdateAccessServiceToken updates an existing Access Service Token for an
+// account.
+//
+// API reference: https://api.cloudflare.com/#access-service-tokens-update-access-service-token
+func (api *API) UpdateAccessServiceToken(accountID, uuid, name string) (AccessServiceTokenUpdateResponse, error) {
+	uri := fmt.Sprintf("/accounts/%s/access/service_tokens/%s", accountID, uuid)
+
+	marshalledName, _ := json.Marshal(struct {
+		Name string `json:"name"`
+	}{name})
+
+	res, err := api.makeRequest("PUT", uri, marshalledName)
+	if err != nil {
+		return AccessServiceTokenUpdateResponse{}, errors.Wrap(err, errMakeRequestError)
+	}
+
+	var accessServiceTokenUpdate AccessServiceTokensUpdateDetailResponse
+	err = json.Unmarshal(res, &accessServiceTokenUpdate)
+	if err != nil {
+		return AccessServiceTokenUpdateResponse{}, errors.Wrap(err, errUnmarshalError)
+	}
+
+	return accessServiceTokenUpdate.Result, nil
+}
+
+// DeleteAccessServiceToken removes an existing Access Service Token for an
+// account.
+//
+// API reference: https://api.cloudflare.com/#access-service-tokens-delete-access-service-token
+func (api *API) DeleteAccessServiceToken(accountID, uuid string) (AccessServiceTokenUpdateResponse, error) {
+	uri := fmt.Sprintf("/accounts/%s/access/service_tokens/%s", accountID, uuid)
+
+	res, err := api.makeRequest("DELETE", uri, nil)
+	if err != nil {
+		return AccessServiceTokenUpdateResponse{}, errors.Wrap(err, errMakeRequestError)
+	}
+
+	var accessServiceTokenUpdate AccessServiceTokensUpdateDetailResponse
+	err = json.Unmarshal(res, &accessServiceTokenUpdate)
+	if err != nil {
+		return AccessServiceTokenUpdateResponse{}, errors.Wrap(err, errUnmarshalError)
+	}
+
+	return accessServiceTokenUpdate.Result, nil
+}