add bluecat api stuff

bluecat_api.go

@@ -0,0 +1,242 @@
+package main
+
+import (
+	"bytes"
+	"encoding/json"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"regexp"
+	"strconv"
+	"strings"
+)
+
+// JSON body for Bluecat entity requests and responses.
+type bluecatEntity struct {
+	ID         string `json:"id,omitempty"`
+	Name       string `json:"name"`
+	Type       string `json:"type"`
+	Properties string `json:"properties"`
+}
+
+type entityResponse struct {
+	ID         uint   `json:"id"`
+	Name       string `json:"name"`
+	Type       string `json:"type"`
+	Properties string `json:"properties"`
+}
+
+var baseURL string
+var token string
+var configName string
+
+func bluecatLogin(bluecatURL, username, password string, bluecatConfigName string) error {
+	baseURL = bluecatURL
+	configName = bluecatConfigName
+	queryArgs := map[string]string{
+		"username": username,
+		"password": password,
+	}
+
+	resp, err := bluecatSendRequest(http.MethodGet, "login", nil, queryArgs)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+
+	authBytes, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		return fmt.Errorf("bluecat: %w", err)
+	}
+	authResp := string(authBytes)
+
+	if strings.Contains(authResp, "Authentication Error") {
+		msg := strings.Trim(authResp, "\"")
+		return fmt.Errorf("bluecat: request failed: %s", msg)
+	}
+
+	token = regexp.MustCompile("BAMAuthToken: [^ ]+").FindString(authResp)
+	return nil
+}
+
+func bluecatLogout() error {
+	if len(token) == 0 {
+		return nil
+	}
+
+	resp, err := bluecatSendRequest(http.MethodGet, "logout", nil, nil)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+
+	if resp.StatusCode != 200 {
+		return fmt.Errorf("bluecat: request failed to delete session with HTTP status code %d", resp.StatusCode)
+	}
+
+	authBytes, err := ioutil.ReadAll(resp.Body)
+	if err != nil {
+		return err
+	}
+	authResp := string(authBytes)
+
+	if !strings.Contains(authResp, "successfully") {
+		msg := strings.Trim(authResp, "\"")
+		return fmt.Errorf("bluecat: request failed to delete session: %s", msg)
+	}
+
+	token = ""
+
+	return nil
+}
+
+func bluecatLookupConfID() (uint, error) {
+	queryArgs := map[string]string{
+		"parentId": strconv.Itoa(0),
+		"name":     configName,
+		"type":     "Configuration",
+	}
+
+	resp, err := bluecatSendRequest(http.MethodGet, "getEntityByName", nil, queryArgs)
+	if err != nil {
+		return 0, err
+	}
+	defer resp.Body.Close()
+
+	var conf entityResponse
+	err = json.NewDecoder(resp.Body).Decode(&conf)
+	if err != nil {
+		return 0, fmt.Errorf("bluecat: %w", err)
+	}
+	return conf.ID, nil
+}
+
+func bluecatLookupViewID(viewName string) (uint, error) {
+	confID, err := bluecatLookupConfID()
+	if err != nil {
+		return 0, err
+	}
+
+	queryArgs := map[string]string{
+		"parentId": strconv.FormatUint(uint64(confID), 10),
+		"name":     viewName,
+		"type":     "View",
+	}
+
+	resp, err := bluecatSendRequest(http.MethodGet, "getEntityByName", nil, queryArgs)
+	if err != nil {
+		return 0, err
+	}
+	defer resp.Body.Close()
+
+	var view entityResponse
+	err = json.NewDecoder(resp.Body).Decode(&view)
+	if err != nil {
+		return 0, fmt.Errorf("bluecat: %w", err)
+	}
+
+	return view.ID, nil
+}
+
+func bluecatLookupParentZoneID(viewID uint, fqdn string) (uint, string, error) {
+	parentViewID := viewID
+	name := ""
+
+	if fqdn != "" {
+		zones := strings.Split(strings.Trim(fqdn, "."), ".")
+		last := len(zones) - 1
+		name = zones[0]
+
+		for i := last; i > -1; i-- {
+			zoneID, err := bluecatGetZone(parentViewID, zones[i])
+			if err != nil || zoneID == 0 {
+				return parentViewID, name, err
+			}
+			if i > 0 {
+				name = strings.Join(zones[0:i], ".")
+			}
+			parentViewID = zoneID
+		}
+	}
+
+	return parentViewID, name, nil
+}
+
+func bluecatGetZone(parentID uint, name string) (uint, error) {
+	queryArgs := map[string]string{
+		"parentId": strconv.FormatUint(uint64(parentID), 10),
+		"name":     name,
+		"type":     "Zone",
+	}
+
+	resp, err := bluecatSendRequest(http.MethodGet, "getEntityByName", nil, queryArgs)
+
+	// Return an empty zone if the named zone doesn't exist
+	if resp != nil && resp.StatusCode == http.StatusNotFound {
+		return 0, fmt.Errorf("bluecat: could not find zone named %s", name)
+	}
+	if err != nil {
+		return 0, err
+	}
+	defer resp.Body.Close()
+
+	var zone entityResponse
+	err = json.NewDecoder(resp.Body).Decode(&zone)
+	if err != nil {
+		return 0, fmt.Errorf("bluecat: %w", err)
+	}
+
+	return zone.ID, nil
+}
+
+func bluecatDeploy(entityID uint) error {
+	queryArgs := map[string]string{
+		"entityId": strconv.FormatUint(uint64(entityID), 10),
+	}
+
+	resp, err := bluecatSendRequest(http.MethodPost, "quickDeploy", nil, queryArgs)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+
+	return nil
+}
+
+func bluecatSendRequest(method, resource string, payload interface{}, queryArgs map[string]string) (*http.Response, error) {
+	url := fmt.Sprintf("%s/Services/REST/v1/%s", baseURL, resource)
+
+	body, err := json.Marshal(payload)
+	if err != nil {
+		return nil, fmt.Errorf("bluecat: %w", err)
+	}
+
+	req, err := http.NewRequest(method, url, bytes.NewReader(body))
+	if err != nil {
+		return nil, fmt.Errorf("bluecat: %w", err)
+	}
+	req.Header.Set("Content-Type", "application/json")
+	if len(token) > 0 {
+		req.Header.Set("Authorization", token)
+	}
+
+	q := req.URL.Query()
+	for argName, argVal := range queryArgs {
+		q.Add(argName, argVal)
+	}
+	req.URL.RawQuery = q.Encode()
+	client := &http.Client{}
+	resp, err := client.Do(req)
+	if err != nil {
+		return nil, fmt.Errorf("bluecat: %w", err)
+	}
+
+	if resp.StatusCode >= 400 {
+		errBytes, _ := ioutil.ReadAll(resp.Body)
+		errResp := string(errBytes)
+		return nil, fmt.Errorf("bluecat: request failed with HTTP status code %d\n Full message: %s",
+			resp.StatusCode, errResp)
+	}
+
+	return resp, nil
+}

main.go

@@ -3,7 +3,11 @@ package main
 import (
 	"encoding/json"
 	"fmt"
+	"github.com/jetstack/cert-manager/pkg/issuer/acme/dns/util"
+	"io/ioutil"
+	"net/http"
 	"os"
+	"strconv"
 
 	extapi "k8s.io/apiextensions-apiserver/pkg/apis/apiextensions/v1beta1"
 	//"k8s.io/client-go/kubernetes"
@@ -87,10 +91,58 @@ func (c *bluecatDNSProviderSolver) Present(ch *v1alpha1.ChallengeRequest) error
 		return err
 	}
 
-	// TODO: do something more useful with the decoded configuration
-	fmt.Printf("Decoded configuration %v", cfg)
+	source := util.UnFqdn(ch.ResolvedFQDN)
+	target := ch.Key
+
+	err = bluecatLogin(cfg.ServerURL, cfg.Username, cfg.Password, cfg.ConfigName)
+	if err != nil {
+		return err
+	}
+
+	viewID, err := bluecatLookupViewID(cfg.DNSView)
+	if err != nil {
+		return err
+	}
+
+	parentZoneID, name, err := bluecatLookupParentZoneID(viewID, source)
+	if err != nil {
+		return err
+	}
+
+	queryArgs := map[string]string{
+		"parentId": strconv.FormatUint(uint64(parentZoneID), 10),
+	}
+
+	body := bluecatEntity{
+		Name:       name,
+		Type:       "TXTRecord",
+		Properties: fmt.Sprintf("ttl=300|absoluteName=%s|txt=%s", source, target),
+	}
+
+	resp, err := bluecatSendRequest(http.MethodPost, "addEntity", body, queryArgs)
+	if err != nil {
+		return err
+	}
+	defer resp.Body.Close()
+
+	addTxtBytes, _ := ioutil.ReadAll(resp.Body)
+	addTxtResp := string(addTxtBytes)
+	// addEntity responds only with body text containing the ID of the created record
+	_, err = strconv.ParseUint(addTxtResp, 10, 64)
+	if err != nil {
+		return fmt.Errorf("bluecat: addEntity request failed: %s", addTxtResp)
+	}
+
+	err = bluecatDeploy(parentZoneID)
+	if err != nil {
+		return err
+	}
+
+	err = bluecatLogout()
+	if err != nil {
+		return err
+	}
 
-	// TODO: add code that sets a record in the DNS provider's console
 	return nil
 }