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git.ipfire.org Git - people/ms/dma.git/blob - mail.c
2 * Copyright (c) 2008 The DragonFly Project. All rights reserved.
4 * This code is derived from software contributed to The DragonFly Project
5 * by Simon 'corecode' Schubert <corecode@fs.ei.tum.de>.
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in
15 * the documentation and/or other materials provided with the
17 * 3. Neither the name of The DragonFly Project nor the names of its
18 * contributors may be used to endorse or promote products derived
19 * from this software without specific, prior written permission.
21 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
22 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
23 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
24 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
25 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
26 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
27 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
28 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
29 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
30 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
31 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
42 bounce(struct qitem
*it
, const char *reason
)
49 /* Don't bounce bounced mails */
50 if (it
->sender
[0] == 0) {
51 syslog(LOG_INFO
, "can not bounce a bounce message, discarding");
55 LIST_INIT(&bounceq
.queue
);
56 if (add_recp(&bounceq
, it
->sender
, "", 1) != 0)
59 if (newspoolf(&bounceq
, "") != 0)
62 syslog(LOG_ERR
, "delivery failed, bouncing as %s", bounceq
.id
);
63 setlogident("%s", bounceq
.id
);
65 error
= fprintf(bounceq
.mailf
,
66 "Received: from MAILER-DAEMON\n"
70 "X-Original-To: <%s>\n"
71 "From: MAILER-DAEMON <>\n"
73 "Subject: Mail delivery failed\n"
74 "Message-Id: <%s@%s>\n"
77 "This is the %s at %s.\n"
79 "There was an error delivering your mail to <%s>.\n"
90 bounceq
.id
, hostname(),
95 config
->features
& FULLBOUNCE
?
96 "Original message follows." :
97 "Message headers follow.");
101 if (fseek(it
->mailf
, it
->hdrlen
, SEEK_SET
) != 0)
103 if (config
->features
& FULLBOUNCE
) {
104 while ((pos
= fread(line
, 1, sizeof(line
), it
->mailf
)) > 0) {
105 if (fwrite(line
, 1, pos
, bounceq
.mailf
) != pos
)
109 while (!feof(it
->mailf
)) {
110 if (fgets(line
, sizeof(line
), it
->mailf
) == NULL
)
114 if (fwrite(line
, strlen(line
), 1, bounceq
.mailf
) != 1)
119 if (linkspool(&bounceq
, "") != 0)
129 syslog(LOG_CRIT
, "error creating bounce: %m");
135 readmail(struct queue
*queue
, const char *sender
, int nodot
)
137 char line
[1000]; /* by RFC2822 */
142 int had_messagid
= 0;
145 error
= fprintf(queue
->mailf
,
146 "Received: from %s (uid %d)\n"
147 "\t(envelope-from %s)\n"
156 if ((ssize_t
)error
< 0)
159 while (!feof(stdin
)) {
160 if (fgets(line
, sizeof(line
), stdin
) == NULL
)
162 linelen
= strlen(line
);
163 if (linelen
== 0 || line
[linelen
- 1] != '\n') {
164 errno
= EINVAL
; /* XXX mark permanent errors */
168 if (strprefixcmp(line
, "Date:") == 0)
170 else if (strprefixcmp(line
, "Message-Id:") == 0)
172 else if (strprefixcmp(line
, "From:") == 0)
175 if (strcmp(line
, "\n") == 0 && !had_headers
) {
177 while (!had_date
|| !had_messagid
|| !had_from
) {
180 snprintf(line
, sizeof(line
), "Date: %s\n", rfc822date());
181 } else if (!had_messagid
) {
182 /* XXX better msgid, assign earlier and log? */
184 snprintf(line
, sizeof(line
), "Message-Id: <%s@%s>\n",
185 queue
->id
, hostname());
186 } else if (!had_from
) {
188 snprintf(line
, sizeof(line
), "From: <%s>\n", sender
);
190 if (fwrite(line
, strlen(line
), 1, queue
->mailf
) != 1)
195 if (!nodot
&& linelen
== 2 && line
[0] == '.')
197 if (fwrite(line
, strlen(line
), 1, queue
->mailf
) != 1)