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> and
6 * Matthias Schmidt <matthias@dragonflybsd.org>.
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
39 #include <sys/types.h>
40 #include <sys/queue.h>
41 #include <sys/socket.h>
42 #include <arpa/nameser.h>
43 #include <arpa/inet.h>
44 #include <openssl/ssl.h>
47 #define VERSION "DragonFly Mail Agent"
50 #define MIN_RETRY 300 /* 5 minutes */
51 #define MIN_RETRY_LOCAL 30 /* 30 seconds */
52 #define MAX_RETRY (3*60*60) /* retry at least every 3 hours */
53 #define RETRY_JITTER 10
54 #define MAX_TIMEOUT (5*24*60*60) /* give up after 5 days */
56 #define PATH_MAX 1024 /* Max path len */
58 #define SMTP_PORT 25 /* Default SMTP port */
59 #define CON_TIMEOUT 120 /* Connection timeout */
61 #define VIRTUAL 0x001 /* Support for address rewrites */
62 #define STARTTLS 0x002 /* StartTLS support */
63 #define SECURETRANS 0x004 /* SSL/TLS in general */
64 #define NOSSL 0x008 /* Do not use SSL */
65 #define DEFER 0x010 /* Defer mails */
66 #define INSECURE 0x020 /* Allow plain login w/o encryption */
67 #define FULLBOUNCE 0x040 /* Bounce the full message */
70 #define CONF_PATH "/etc/dma/dma.conf" /* Default path to dma.conf */
74 SLIST_ENTRY(stritem) next;
77 SLIST_HEAD(strlist, stritem);
80 LIST_ENTRY(alias) next;
84 LIST_HEAD(aliases, alias);
87 LIST_ENTRY(qitem) next;
97 LIST_HEAD(queueh, qitem);
108 const char *smarthost;
111 const char *spooldir;
112 const char *virtualpath;
113 const char *authpath;
114 const char *certfile;
116 const char *mailname;
117 const char *mailnamefile;
119 /* XXX does not belong into config */
125 SLIST_ENTRY(virtuser) next;
129 SLIST_HEAD(virtusers, virtuser);
132 SLIST_ENTRY(authuser) next;
137 SLIST_HEAD(authusers, authuser);
140 struct mx_hostentry {
142 char addr[INET6_ADDRSTRLEN];
145 struct sockaddr_storage sa;
149 /* global variables */
150 extern struct aliases aliases;
151 extern struct config config;
152 extern struct strlist tmpfs;
153 extern struct virtusers virtusers;
154 extern struct authusers authusers;
155 extern const char *username;
156 extern const char *logident_base;
158 extern char neterr[BUF_SIZE];
160 /* aliases_parse.y */
165 void trim_line(char *);
166 void parse_conf(const char *);
167 void parse_virtuser(const char *);
168 void parse_authfile(const char *);
171 void hmac_md5(unsigned char *, int, unsigned char *, int, caddr_t);
172 int smtp_auth_md5(int, char *, char *);
173 int smtp_init_crypto(int, int);
176 int dns_get_mx_list(const char *, int, struct mx_hostentry **, int);
179 char *ssl_errstr(void);
180 int read_remote(int, int, char *);
181 ssize_t send_remote_command(int, const char*, ...) __printflike(2, 3);
182 int deliver_remote(struct qitem *, const char **);
185 int base64_encode(const void *, int, char **);
186 int base64_decode(const char *, void *);
189 int add_recp(struct queue *, const char *, int);
190 void run_queue(struct queue *);
193 int newspoolf(struct queue *);
194 int linkspool(struct queue *);
195 int load_queue(struct queue *);
196 void delqueue(struct qitem *);
197 int acquirespool(struct qitem *);
198 void dropspool(struct queue *, struct qitem *);
201 int deliver_local(struct qitem *, const char **errmsg);
204 void bounce(struct qitem *, const char *);
205 int readmail(struct queue *, int, int);
208 const char *hostname(void);
209 void setlogident(const char *, ...) __printf0like(1, 2);
210 void errlog(int, const char *, ...) __printf0like(2, 3);
211 void errlogx(int, const char *, ...) __printf0like(2, 3);
212 void set_username(void);
214 int open_locked(const char *, int, ...);
215 char *rfc822date(void);
216 int strprefixcmp(const char *, const char *);