/
infoblox.go
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/
infoblox.go
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// Package infoblox implements a DNS provider for solving the DNS-01 challenge using on prem infoblox DNS.
package infoblox
import (
"errors"
"fmt"
"strconv"
"sync"
"time"
"github.com/go-acme/lego/v4/challenge/dns01"
"github.com/go-acme/lego/v4/platform/config/env"
infoblox "github.com/infobloxopen/infoblox-go-client"
)
// Environment variables names.
const (
envNamespace = "INFOBLOX_"
EnvHost = envNamespace + "HOST"
EnvPort = envNamespace + "PORT"
EnvUsername = envNamespace + "USERNAME"
EnvPassword = envNamespace + "PASSWORD"
EnvDNSView = envNamespace + "DNS_VIEW"
EnvWApiVersion = envNamespace + "WAPI_VERSION"
EnvSSLVerify = envNamespace + "SSL_VERIFY"
EnvTTL = envNamespace + "TTL"
EnvPropagationTimeout = envNamespace + "PROPAGATION_TIMEOUT"
EnvPollingInterval = envNamespace + "POLLING_INTERVAL"
EnvHTTPTimeout = envNamespace + "HTTP_TIMEOUT"
)
const (
defaultPoolConnections = 10
defaultUserAgent = "go-acme/lego"
)
// Config is used to configure the creation of the DNSProvider.
type Config struct {
// Host is the URL of the grid manager.
Host string
// Port is the Port for the grid manager.
Port string
// Username the user for accessing API.
Username string
// Password the password for accessing API.
Password string
// DNSView is the dns view to put new records and search from.
DNSView string
// WapiVersion is the version of web api used.
WapiVersion string
// SSLVerify is whether or not to verify the ssl of the server being hit.
SSLVerify bool
PropagationTimeout time.Duration
PollingInterval time.Duration
TTL int
HTTPTimeout int
}
// NewDefaultConfig returns a default configuration for the DNSProvider.
func NewDefaultConfig() *Config {
return &Config{
DNSView: env.GetOrDefaultString(EnvDNSView, "External"),
WapiVersion: env.GetOrDefaultString(EnvWApiVersion, "2.11"),
Port: env.GetOrDefaultString(EnvPort, "443"),
SSLVerify: env.GetOrDefaultBool(EnvSSLVerify, true),
TTL: env.GetOrDefaultInt(EnvTTL, dns01.DefaultTTL),
PropagationTimeout: env.GetOrDefaultSecond(EnvPropagationTimeout, dns01.DefaultPropagationTimeout),
PollingInterval: env.GetOrDefaultSecond(EnvPollingInterval, dns01.DefaultPollingInterval),
HTTPTimeout: env.GetOrDefaultInt(EnvHTTPTimeout, 30),
}
}
// DNSProvider implements the challenge.Provider interface.
type DNSProvider struct {
config *Config
transportConfig infoblox.TransportConfig
ibConfig infoblox.HostConfig
recordRefs map[string]string
recordRefsMu sync.Mutex
}
// NewDNSProvider returns a DNSProvider instance configured for Infoblox.
// Credentials must be passed in the environment variables:
// INFOBLOX_USERNAME, INFOBLOX_PASSWORD
// INFOBLOX_HOST, INFOBLOX_PORT
// INFOBLOX_DNS_VIEW, INFOBLOX_WAPI_VERSION
// INFOBLOX_SSL_VERIFY.
func NewDNSProvider() (*DNSProvider, error) {
values, err := env.Get(EnvHost, EnvUsername, EnvPassword)
if err != nil {
return nil, fmt.Errorf("infoblox: %w", err)
}
config := NewDefaultConfig()
config.Host = values[EnvHost]
config.Username = values[EnvUsername]
config.Password = values[EnvPassword]
return NewDNSProviderConfig(config)
}
// NewDNSProviderConfig return a DNSProvider instance configured for HyperOne.
func NewDNSProviderConfig(config *Config) (*DNSProvider, error) {
if config == nil {
return nil, errors.New("infoblox: the configuration of the DNS provider is nil")
}
if config.Host == "" {
return nil, errors.New("infoblox: missing host")
}
if config.Username == "" || config.Password == "" {
return nil, errors.New("infoblox: missing credentials")
}
return &DNSProvider{
config: config,
transportConfig: infoblox.NewTransportConfig(strconv.FormatBool(config.SSLVerify), config.HTTPTimeout, defaultPoolConnections),
ibConfig: infoblox.HostConfig{
Host: config.Host,
Version: config.WapiVersion,
Port: config.Port,
Username: config.Username,
Password: config.Password,
},
recordRefs: make(map[string]string),
}, nil
}
// Timeout returns the timeout and interval to use when checking for DNS propagation.
func (d *DNSProvider) Timeout() (timeout, interval time.Duration) {
return d.config.PropagationTimeout, d.config.PollingInterval
}
// Present creates a TXT record to fulfill the dns-01 challenge.
func (d *DNSProvider) Present(domain, token, keyAuth string) error {
info := dns01.GetChallengeInfo(domain, keyAuth)
connector, err := infoblox.NewConnector(d.ibConfig, d.transportConfig, &infoblox.WapiRequestBuilder{}, &infoblox.WapiHttpRequestor{})
if err != nil {
return fmt.Errorf("infoblox: %w", err)
}
defer func() { _ = connector.Logout() }()
objectManager := infoblox.NewObjectManager(connector, defaultUserAgent, "")
record, err := objectManager.CreateTXTRecord(dns01.UnFqdn(info.EffectiveFQDN), info.Value, uint(d.config.TTL), d.config.DNSView)
if err != nil {
return fmt.Errorf("infoblox: could not create TXT record for %s: %w", domain, err)
}
d.recordRefsMu.Lock()
d.recordRefs[token] = record.Ref
d.recordRefsMu.Unlock()
return nil
}
// CleanUp removes the TXT record matching the specified parameters.
func (d *DNSProvider) CleanUp(domain, token, keyAuth string) error {
info := dns01.GetChallengeInfo(domain, keyAuth)
connector, err := infoblox.NewConnector(d.ibConfig, d.transportConfig, &infoblox.WapiRequestBuilder{}, &infoblox.WapiHttpRequestor{})
if err != nil {
return fmt.Errorf("infoblox: %w", err)
}
defer func() { _ = connector.Logout() }()
objectManager := infoblox.NewObjectManager(connector, defaultUserAgent, "")
// gets the record's unique ref from when we created it
d.recordRefsMu.Lock()
recordRef, ok := d.recordRefs[token]
d.recordRefsMu.Unlock()
if !ok {
return fmt.Errorf("infoblox: unknown record ID for '%s' '%s'", info.EffectiveFQDN, token)
}
_, err = objectManager.DeleteTXTRecord(recordRef)
if err != nil {
return fmt.Errorf("infoblox: could not delete TXT record for %s: %w", domain, err)
}
// Delete record ref from map
d.recordRefsMu.Lock()
delete(d.recordRefs, token)
d.recordRefsMu.Unlock()
return nil
}