exec

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Published: May 30, 2018 License: MIT Imports: 5 Imported by: 19

Documentation

Overview

Package exec implements a manual DNS provider which runs a program for adding/removing the DNS record.

The file name of the external program is specified in the environment variable EXEC_PATH. When it is run by lego, three command-line parameters are passed to it: The action ("present" or "cleanup"), the fully-qualified domain name, the value for the record and the TTL.

For example, requesting a certificate for the domain 'foo.example.com' can be achieved by calling lego as follows:

EXEC_PATH=./update-dns.sh \
  lego --dns exec \
  --domains foo.example.com \
  --email invalid@example.com run

It will then call the program './update-dns.sh' with like this:

./update-dns.sh "present" "_acme-challenge.foo.example.com." "MsijOYZxqyjGnFGwhjrhfg-Xgbl5r68WPda0J9EgqqI" "120"

The program then needs to make sure the record is inserted. When it returns an error via a non-zero exit code, lego aborts.

When the record is to be removed again, the program is called with the first command-line parameter set to "cleanup" instead of "present".

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

This section is empty.

Types

type DNSProvider

type DNSProvider struct {
	// contains filtered or unexported fields
}

DNSProvider adds and removes the record for the DNS challenge by calling a program with command-line parameters.

func NewDNSProvider

func NewDNSProvider() (*DNSProvider, error)

NewDNSProvider returns a new DNS provider which runs the program in the environment variable EXEC_PATH for adding and removing the DNS record.

func (*DNSProvider) CleanUp

func (d *DNSProvider) CleanUp(domain, token, keyAuth string) error

CleanUp removes the TXT record matching the specified parameters

func (*DNSProvider) Present

func (d *DNSProvider) Present(domain, token, keyAuth string) error

Present creates a TXT record to fulfil the dns-01 challenge.

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