forked from TrueCloudLab/lego
113 lines
3.2 KiB
Go
113 lines
3.2 KiB
Go
// Package exec implements a DNS provider which runs a program for adding/removing the DNS record.
|
|
package exec
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
"os"
|
|
"os/exec"
|
|
"time"
|
|
|
|
"github.com/go-acme/lego/challenge/dns01"
|
|
"github.com/go-acme/lego/log"
|
|
"github.com/go-acme/lego/platform/config/env"
|
|
)
|
|
|
|
// Config Provider configuration.
|
|
type Config struct {
|
|
Program string
|
|
Mode string
|
|
PropagationTimeout time.Duration
|
|
PollingInterval time.Duration
|
|
}
|
|
|
|
// NewDefaultConfig returns a default configuration for the DNSProvider
|
|
func NewDefaultConfig() *Config {
|
|
return &Config{
|
|
PropagationTimeout: env.GetOrDefaultSecond("EXEC_PROPAGATION_TIMEOUT", dns01.DefaultPropagationTimeout),
|
|
PollingInterval: env.GetOrDefaultSecond("EXEC_POLLING_INTERVAL", dns01.DefaultPollingInterval),
|
|
}
|
|
}
|
|
|
|
// DNSProvider adds and removes the record for the DNS challenge by calling a
|
|
// program with command-line parameters.
|
|
type DNSProvider struct {
|
|
config *Config
|
|
}
|
|
|
|
// NewDNSProvider returns a new DNS provider which runs the program in the
|
|
// environment variable EXEC_PATH for adding and removing the DNS record.
|
|
func NewDNSProvider() (*DNSProvider, error) {
|
|
values, err := env.Get("EXEC_PATH")
|
|
if err != nil {
|
|
return nil, fmt.Errorf("exec: %v", err)
|
|
}
|
|
|
|
config := NewDefaultConfig()
|
|
config.Program = values["EXEC_PATH"]
|
|
config.Mode = os.Getenv("EXEC_MODE")
|
|
|
|
return NewDNSProviderConfig(config)
|
|
}
|
|
|
|
// NewDNSProviderConfig returns a new DNS provider which runs the given configuration
|
|
// for adding and removing the DNS record.
|
|
func NewDNSProviderConfig(config *Config) (*DNSProvider, error) {
|
|
if config == nil {
|
|
return nil, errors.New("the configuration is nil")
|
|
}
|
|
|
|
return &DNSProvider{config: config}, nil
|
|
}
|
|
|
|
// Present creates a TXT record to fulfill the dns-01 challenge.
|
|
func (d *DNSProvider) Present(domain, token, keyAuth string) error {
|
|
var args []string
|
|
if d.config.Mode == "RAW" {
|
|
args = []string{"present", "--", domain, token, keyAuth}
|
|
} else {
|
|
fqdn, value := dns01.GetRecord(domain, keyAuth)
|
|
args = []string{"present", fqdn, value}
|
|
}
|
|
|
|
cmd := exec.Command(d.config.Program, args...)
|
|
|
|
output, err := cmd.CombinedOutput()
|
|
if len(output) > 0 {
|
|
log.Println(string(output))
|
|
}
|
|
|
|
return err
|
|
}
|
|
|
|
// CleanUp removes the TXT record matching the specified parameters
|
|
func (d *DNSProvider) CleanUp(domain, token, keyAuth string) error {
|
|
var args []string
|
|
if d.config.Mode == "RAW" {
|
|
args = []string{"cleanup", "--", domain, token, keyAuth}
|
|
} else {
|
|
fqdn, value := dns01.GetRecord(domain, keyAuth)
|
|
args = []string{"cleanup", fqdn, value}
|
|
}
|
|
|
|
cmd := exec.Command(d.config.Program, args...)
|
|
|
|
output, err := cmd.CombinedOutput()
|
|
if len(output) > 0 {
|
|
log.Println(string(output))
|
|
}
|
|
|
|
return err
|
|
}
|
|
|
|
// Timeout returns the timeout and interval to use when checking for DNS propagation.
|
|
// Adjusting here to cope with spikes in propagation times.
|
|
func (d *DNSProvider) Timeout() (timeout, interval time.Duration) {
|
|
return d.config.PropagationTimeout, d.config.PollingInterval
|
|
}
|
|
|
|
// Sequential All DNS challenges for this provider will be resolved sequentially.
|
|
// Returns the interval between each iteration.
|
|
func (d *DNSProvider) Sequential() time.Duration {
|
|
return d.config.PropagationTimeout
|
|
}
|