defmodule Swoosh.Adapters.Sendmail do
@moduledoc ~S"""
An adapter that sends email using the sendmail binary.
## Example
# config/config.exs
config :sample, Sample.Mailer,
adapter: Swoosh.Adapters.Sendmail,
cmd_path: "/usr/bin/sendmail",
cmd_args: "-N delay,failure,success",
qmail: true # Default false
# lib/sample/mailer.ex
defmodule Sample.Mailer do
use Swoosh.Mailer, otp_app: :sample
end
"""
use Swoosh.Adapter, required_deps: [gen_smtp: :mimemail]
alias Swoosh.Email
alias Swoosh.Adapters.SMTP.Helpers
@impl true
def deliver(%Email{} = email, config) do
body = Helpers.body(email, config)
port = Port.open({:spawn, cmd(email, config)}, [:binary])
Port.command(port, body)
Port.close(port)
{:ok, %{}}
end
@doc false
def cmd(email, config) do
sender = Helpers.sender(email) |> shell_escape()
"#{cmd_path(config)} -f#{sender}#{cmd_args(config)}"
end
@doc false
def cmd_path(config) do
default =
case config[:qmail] do
true -> "/var/qmail/bin/qmail-inject"
_ -> "/usr/sbin/sendmail"
end
config[:cmd_path] || default
end
@doc false
def cmd_args(config) do
if(config[:qmail], do: "", else: " -oi -t") <> String.trim_trailing(" #{config[:cmd_args]}")
end
@doc false
def shell_escape(s) do
"'" <> String.replace(s, "'", "'\\''") <> "'"
end
end