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/account_roles.go

@@ -0,0 +1,80 @@
+package cloudflare
+
+import (
+	"encoding/json"
+	"fmt"
+
+	"github.com/pkg/errors"
+)
+
+// AccountRole defines the roles that a member can have attached.
+type AccountRole struct {
+	ID          string                           `json:"id"`
+	Name        string                           `json:"name"`
+	Description string                           `json:"description"`
+	Permissions map[string]AccountRolePermission `json:"permissions"`
+}
+
+// AccountRolePermission is the shared structure for all permissions
+// that can be assigned to a member.
+type AccountRolePermission struct {
+	Read bool `json:"read"`
+	Edit bool `json:"edit"`
+}
+
+// AccountRolesListResponse represents the list response from the
+// account roles.
+type AccountRolesListResponse struct {
+	Result []AccountRole `json:"result"`
+	Response
+	ResultInfo `json:"result_info"`
+}
+
+// AccountRoleDetailResponse is the API response, containing a single
+// account role.
+type AccountRoleDetailResponse struct {
+	Success  bool        `json:"success"`
+	Errors   []string    `json:"errors"`
+	Messages []string    `json:"messages"`
+	Result   AccountRole `json:"result"`
+}
+
+// AccountRoles returns all roles of an account.
+//
+// API reference: https://api.cloudflare.com/#account-roles-list-roles
+func (api *API) AccountRoles(accountID string) ([]AccountRole, error) {
+	uri := "/accounts/" + accountID + "/roles"
+
+	res, err := api.makeRequest("GET", uri, nil)
+	if err != nil {
+		return []AccountRole{}, errors.Wrap(err, errMakeRequestError)
+	}
+
+	var accountRolesListResponse AccountRolesListResponse
+	err = json.Unmarshal(res, &accountRolesListResponse)
+	if err != nil {
+		return []AccountRole{}, errors.Wrap(err, errUnmarshalError)
+	}
+
+	return accountRolesListResponse.Result, nil
+}
+
+// AccountRole returns the details of a single account role.
+//
+// API reference: https://api.cloudflare.com/#account-roles-role-details
+func (api *API) AccountRole(accountID string, roleID string) (AccountRole, error) {
+	uri := fmt.Sprintf("/accounts/%s/roles/%s", accountID, roleID)
+
+	res, err := api.makeRequest("GET", uri, nil)
+	if err != nil {
+		return AccountRole{}, errors.Wrap(err, errMakeRequestError)
+	}
+
+	var accountRole AccountRoleDetailResponse
+	err = json.Unmarshal(res, &accountRole)
+	if err != nil {
+		return AccountRole{}, errors.Wrap(err, errUnmarshalError)
+	}
+
+	return accountRole.Result, nil
+}