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// nullmailer -- a simple relay-only MTA
// Copyright (C) 2017 Bruce Guenter <bruce@untroubled.org>
//
// This program is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
//
// You can contact me at <bruce@untroubled.org>. There is also a mailing list
// available to discuss this package. To subscribe, send an email to
// <nullmailer-subscribe@lists.untroubled.org>.
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include "connect.h"
#include "errcodes.h"
#include "list.h"
#include "mystring/mystring.h"
#include "protocol.h"
#include "cli++/cli++.h"
const char* user = 0;
const char* pass = 0;
int port = 0;
int auth_method = AUTH_DETECT;
int use_tls = 0;
int use_starttls = 0;
const char* remote = 0;
const char* source = 0;
const char* cli_help_suffix = "";
const char* cli_args_usage = "< options 3< mail-file";
const int cli_args_min = 0;
const int cli_args_max = 0;
cli_option cli_options[] = {
{ 0, "host", cli_option::string, 0, &remote,
"Set the hostname for the remote", 0 },
{ 'p', "port", cli_option::integer, 0, &port,
"Set the port number on the remote host to connect to", 0 },
{ 0, "user", cli_option::string, 0, &user,
"Set the user name for authentication", 0 },
{ 0, "pass", cli_option::string, 0, &pass,
"Set the password for authentication", 0 },
{ 0, "auth-login", cli_option::flag, AUTH_LOGIN, &auth_method,
"Use AUTH LOGIN instead of auto-detecting in SMTP", 0 },
{ 0, "source", cli_option::string, 0, &source,
"Source address for connections", 0 },
#ifdef HAVE_TLS
{ 0, "tls", cli_option::flag, 1, &use_tls,
"Connect using TLS (on an alternate port by default)", 0 },
{ 0, "ssl", cli_option::flag, 1, &use_tls,
"Alias for --tls", 0 },
{ 0, "starttls", cli_option::flag, 1, &use_starttls,
"Use STARTTLS command", 0 },
{ 0, "x509certfile", cli_option::string, 0, &tls_x509certfile,
"Client certificate file", 0 },
{ 0, "x509keyfile", cli_option::string, 0, &tls_x509keyfile,
"Client certificate private key file", "the same file as --x509certfile" },
{ 0, "x509cafile", cli_option::string, 0, &tls_x509cafile,
"Certificate authority trust file", DEFAULT_CA_FILE },
{ 0, "x509crlfile", cli_option::string, 0, &tls_x509crlfile,
"Certificate revocation list file", 0 },
{ 0, "x509fmtder", cli_option::flag, true, &tls_x509derfmt,
"X.509 files are in DER format", "PEM format" },
{ 0, "insecure", cli_option::flag, true, &tls_insecure,
"Don't abort if server certificate fails validation", 0 },
{ 0, "tls-anon-auth", cli_option::flag, true, &tls_anon_auth,
"Use TLS anonymous authentication - needs --insecure option", 0 },
#endif
{0, 0, cli_option::flag, 0, 0, 0, 0}
};
void protocol_fail(int e, const char* msg)
{
fout << msg << endl;
ferr << cli_program << ": Failed: " << msg << endl;
exit(e);
}
void protocol_succ(const char* msg)
{
fout << msg << endl;
ferr << cli_program << ": Succeeded: " << msg << endl;
exit(0);
}
static void plain_send(fdibuf& in, int fd)
{
fdibuf netin(fd);
fdobuf netout(fd);
if (!netin || !netout)
protocol_fail(ERR_MSG_TEMPFAIL, "Error allocating I/O buffers");
if (use_starttls) {
protocol_starttls(netin, netout);
tls_send(in, fd);
}
else
protocol_send(in, netin, netout);
}
static void parse_option(mystring line)
{
if (line[0] != '-')
line = "--" + line;
const char* arg = strdup(line.c_str());
if (arg == NULL)
exit(ERR_CONFIG);
const char* args[3] = { argv0, arg, NULL };
if (cli_parse_args(2, (char**)args) != 2)
exit(ERR_CONFIG);
}
static void parse_options(void)
{
mystring line;
while (fin.getline(line, '\n')) {
if (line.length() == 0)
return;
parse_option(line);
}
if (!fin.eof())
exit(ERR_CONFIG);
}
int cli_main(int, char*[])
{
parse_options();
if (remote == 0)
protocol_fail(ERR_USAGE, "Remote host not set");
if (port == 0)
port = use_tls ? default_tls_port : default_port;
if (port < 0)
protocol_fail(ERR_USAGE, "Invalid value for port");
if (use_tls || use_starttls)
tls_init(remote);
fdibuf in(3, true);
protocol_prep(in);
int fd = tcpconnect(remote, port, source);
if(fd < 0)
protocol_fail(-fd, "Connect failed");
if (use_tls)
tls_send(in, fd);
else
plain_send(in, fd);
return 0;
}
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