2 * Copyright (c) 2008 The DragonFly Project. All rights reserved.
4 * This code is derived from software contributed to The DragonFly Project
5 * by Matthias Schmidt <matthias@dragonflybsd.org>, University of Marburg,
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in
16 * the documentation and/or other materials provided with the
18 * 3. Neither the name of The DragonFly Project nor the names of its
19 * contributors may be used to endorse or promote products derived
20 * from this software without specific, prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
23 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
24 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
25 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
26 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
27 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
28 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
29 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
30 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
31 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
32 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
35 * $DragonFly: src/libexec/dma/net.c,v 1.6 2008/04/20 13:44:24 swildner Exp $
38 #include <sys/param.h>
39 #include <sys/queue.h>
41 #include <sys/types.h>
42 #include <sys/socket.h>
43 #include <netinet/in.h>
44 #include <arpa/inet.h>
47 #include <openssl/ssl.h>
48 #endif /* HAVE_CRYPTO */
58 extern struct config *config;
59 extern struct authusers authusers;
60 static jmp_buf timeout_alarm;
63 sig_alarm(int signo __unused)
65 longjmp(timeout_alarm, 1);
69 send_remote_command(int fd, const char* fmt, ...)
76 vsprintf(cmd, fmt, va);
78 if (((config->features & SECURETRANS) != 0) &&
79 ((config->features & NOSSL) == 0)) {
80 len = SSL_write(config->ssl, (const char*)cmd, strlen(cmd));
81 SSL_write(config->ssl, "\r\n", 2);
84 len = write(fd, cmd, strlen(cmd));
98 int done = 0, status = 0;
100 if (signal(SIGALRM, sig_alarm) == SIG_ERR) {
101 syslog(LOG_ERR, "SIGALRM error: %m");
103 if (setjmp(timeout_alarm) != 0) {
104 syslog(LOG_ERR, "Timeout reached");
110 * Remote reading code from femail.c written by Henning Brauer of
111 * OpenBSD and released under a BSD style license.
113 for (len = pos = 0; !done; ) {
115 (pos > 0 && memchr(buff + pos, '\n', len - pos) == NULL)) {
116 memmove(buff, buff + pos, len - pos);
119 if (((config->features & SECURETRANS) != 0) &&
120 (config->features & NOSSL) == 0) {
121 if ((rlen = SSL_read(config->ssl, buff + len,
122 sizeof(buff) - len)) == -1)
125 if ((rlen = read(fd, buff + len,
126 sizeof(buff) - len)) == -1)
131 for (; pos < len && buff[pos] >= '0' && buff[pos] <= '9'; pos++)
137 if (buff[pos] == ' ')
139 else if (buff[pos] != '-')
140 syslog(LOG_ERR, "invalid syntax in reply from server");
143 for (; pos < len && buff[pos - 1] != '\n'; pos++)
154 * Handle SMTP authentication
156 * XXX TODO: give me AUTH CRAM-MD5
159 smtp_login(struct qitem *it, int fd, char *login, char* password)
164 /* Send AUTH command according to RFC 2554 */
165 send_remote_command(fd, "AUTH LOGIN");
166 if (read_remote(fd) != 3) {
167 syslog(LOG_ERR, "%s: remote delivery deferred:"
168 " AUTH login not available: %m", it->queueid);
172 len = base64_encode(login, strlen(login), &temp);
176 send_remote_command(fd, "%s", temp);
177 if (read_remote(fd) != 3) {
178 syslog(LOG_ERR, "%s: remote delivery deferred:"
179 " AUTH login failed: %m", it->queueid);
183 len = base64_encode(password, strlen(password), &temp);
187 send_remote_command(fd, "%s", temp);
188 res = read_remote(fd);
190 syslog(LOG_ERR, "%s: remote delivery failed:"
191 " Authentication failed: %m", it->queueid);
193 } else if (res != 2) {
194 syslog(LOG_ERR, "%s: remote delivery failed:"
195 " AUTH password failed: %m", it->queueid);
203 open_connection(struct qitem *it, const char *host)
205 struct addrinfo hints, *res, *res0;
207 const char *errmsg = NULL;
208 int fd, error = 0, port;
210 if (config->port != 0)
215 /* Shamelessly taken from getaddrinfo(3) */
216 memset(&hints, 0, sizeof(hints));
217 hints.ai_family = PF_UNSPEC;
218 hints.ai_socktype = SOCK_STREAM;
219 hints.ai_protocol = IPPROTO_TCP;
221 snprintf(servname, sizeof(servname), "%d", port);
222 error = getaddrinfo(host, servname, &hints, &res0);
224 syslog(LOG_ERR, "%s: remote delivery deferred: "
225 "%s: %m", it->queueid, gai_strerror(error));
229 for (res = res0; res; res = res->ai_next) {
230 fd=socket(res->ai_family, res->ai_socktype, res->ai_protocol);
232 errmsg = "socket failed";
235 if (connect(fd, res->ai_addr, res->ai_addrlen) < 0) {
236 errmsg = "connect failed";
244 syslog(LOG_ERR, "%s: remote delivery deferred: %s (%s:%s)",
245 it->queueid, errmsg, host, servname);
254 deliver_remote(struct qitem *it, const char **errmsg)
257 char *host, line[1000];
258 int fd, error = 0, do_auth = 0, res = 0;
261 host = strrchr(it->addr, '@');
262 /* Should not happen */
266 /* Step over the @ */
269 /* Smarthost support? */
270 if (config->smarthost != NULL && strlen(config->smarthost) > 0) {
271 syslog(LOG_INFO, "%s: using smarthost (%s)",
272 it->queueid, config->smarthost);
273 host = config->smarthost;
276 fd = open_connection(it, host);
280 /* Check first reply from remote host */
281 config->features |= NOSSL;
282 res = read_remote(fd);
284 syslog(LOG_INFO, "%s: Invalid initial response: %i",
288 config->features &= ~NOSSL;
291 if ((config->features & SECURETRANS) != 0) {
292 error = smtp_init_crypto(it, fd, config->features);
294 syslog(LOG_INFO, "%s: SSL initialization successful",
301 * If the user doesn't want STARTTLS, but SSL encryption, we
302 * have to enable SSL first, then send EHLO
304 if (((config->features & STARTTLS) == 0) &&
305 ((config->features & SECURETRANS) != 0)) {
306 send_remote_command(fd, "EHLO %s", hostname());
307 if (read_remote(fd) != 2) {
308 syslog(LOG_ERR, "%s: remote delivery deferred: "
309 " EHLO failed: %m", it->queueid);
313 #endif /* HAVE_CRYPTO */
314 if (((config->features & SECURETRANS) == 0)) {
315 send_remote_command(fd, "EHLO %s", hostname());
316 if (read_remote(fd) != 2) {
317 syslog(LOG_ERR, "%s: remote delivery deferred: "
318 " EHLO failed: %m", it->queueid);
324 * Use SMTP authentication if the user defined an entry for the remote
327 SLIST_FOREACH(a, &authusers, next) {
328 if (strcmp(a->host, host) == 0) {
336 * Check if the user wants plain text login without using
339 if ((config->features & INSECURE) != 0) {
340 syslog(LOG_INFO, "%s: Use SMTP authentication",
342 error = smtp_login(it, fd, a->login, a->password);
344 syslog(LOG_ERR, "%s: remote delivery failed:"
345 " SMTP login failed: %m", it->queueid);
348 /* SMTP login is not available, so try without */
350 syslog(LOG_ERR, "%s: SMTP login not available."
351 " Try without", it->queueid);
353 syslog(LOG_ERR, "%s: Skip SMTP login. ",
358 send_remote_command(fd, "MAIL FROM:<%s>", it->sender);
359 if (read_remote(fd) != 2) {
360 syslog(LOG_ERR, "%s: remote delivery deferred:"
361 " MAIL FROM failed: %m", it->queueid);
366 * Iterate over all recepients and open only one connection
368 send_remote_command(fd, "RCPT TO:<%s>", it->addr);
369 if (read_remote(fd) != 2) {
370 syslog(LOG_ERR, "%s: remote delivery deferred:"
371 " RCPT TO failed: %m", it->queueid);
375 send_remote_command(fd, "DATA");
376 if (read_remote(fd) != 3) {
377 syslog(LOG_ERR, "%s: remote delivery deferred:"
378 " DATA failed: %m", it->queueid);
382 if (fseek(it->queuef, it->hdrlen, SEEK_SET) != 0) {
383 syslog(LOG_ERR, "%s: remote delivery deferred: cannot seek: %m",
388 while (!feof(it->queuef)) {
389 if (fgets(line, sizeof(line), it->queuef) == NULL)
391 linelen = strlen(line);
392 if (linelen == 0 || line[linelen - 1] != '\n') {
393 syslog(LOG_CRIT, "%s: remote delivery failed:"
394 "corrupted queue file", it->queueid);
395 *errmsg = "corrupted queue file";
400 /* Remove trailing \n's and escape leading dots */
404 * If the first character is a dot, we escape it so the line
410 if (send_remote_command(fd, "%s", line) != (ssize_t)linelen+1) {
411 syslog(LOG_ERR, "%s: remote delivery deferred: "
412 "write error", it->queueid);
418 send_remote_command(fd, ".");
419 if (read_remote(fd) != 2) {
420 syslog(LOG_ERR, "%s: remote delivery deferred: %m",
425 send_remote_command(fd, "QUIT");
426 if (read_remote(fd) != 2) {
427 syslog(LOG_ERR, "%s: remote delivery deferred: "
428 "QUIT failed: %m", it->queueid);