2 * Copyright (c) 2008-2014, Simon Schubert <2@0x2c.org>.
3 * Copyright (c) 2008 The DragonFly Project. All rights reserved.
5 * This code is derived from software contributed to The DragonFly Project
6 * by Simon Schubert <2@0x2c.org> and
7 * Matthias Schmidt <matthias@dragonflybsd.org>.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
19 * 3. Neither the name of The DragonFly Project nor the names of its
20 * contributors may be used to endorse or promote products derived
21 * from this software without specific, prior written permission.
23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
24 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
25 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
26 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
27 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
28 * INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
29 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
30 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
31 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
32 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
33 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
40 #include <sys/types.h>
41 #include <sys/queue.h>
42 #include <sys/socket.h>
43 #include <arpa/nameser.h>
44 #include <arpa/inet.h>
45 #include <openssl/ssl.h>
48 #define VERSION "DragonFly Mail Agent " DMA_VERSION
51 #define ERRMSG_SIZE 200
52 #define USERNAME_SIZE 50
53 #define MIN_RETRY 300 /* 5 minutes */
54 #define MAX_RETRY (3*60*60) /* retry at least every 3 hours */
55 #define MAX_TIMEOUT (5*24*60*60) /* give up after 5 days */
56 #define SLEEP_TIMEOUT 30 /* check for queue flush every 30 seconds */
58 #define PATH_MAX 1024 /* Max path len */
60 #define SMTP_PORT 25 /* Default SMTP port */
61 #define CON_TIMEOUT (5*60) /* Connection timeout per RFC5321 */
63 #define STARTTLS 0x002 /* StartTLS support */
64 #define SECURETRANS 0x004 /* SSL/TLS in general */
65 #define NOSSL 0x008 /* Do not use SSL */
66 #define DEFER 0x010 /* Defer mails */
67 #define INSECURE 0x020 /* Allow plain login w/o encryption */
68 #define FULLBOUNCE 0x040 /* Bounce the full message */
69 #define TLS_OPP 0x080 /* Opportunistic STARTTLS */
70 #define NULLCLIENT 0x100 /* Nullclient support */
73 #error Please define CONF_PATH
77 #error Please define LIBEXEC_PATH
80 #define SPOOL_FLUSHFILE "flush"
83 #define DMA_ROOT_USER "mail"
86 #define DMA_GROUP "mail"
95 SLIST_ENTRY(stritem) next;
98 SLIST_HEAD(strlist, stritem);
101 LIST_ENTRY(alias) next;
103 struct strlist dests;
105 LIST_HEAD(aliases, alias);
108 LIST_ENTRY(qitem) next;
118 LIST_HEAD(queueh, qitem);
129 const char *smarthost;
132 const char *spooldir;
133 const char *authpath;
134 const char *certfile;
136 const char *mailname;
137 const char *masquerade_host;
138 const char *masquerade_user;
140 /* XXX does not belong into config */
146 SLIST_ENTRY(authuser) next;
151 SLIST_HEAD(authusers, authuser);
154 struct mx_hostentry {
156 char addr[INET6_ADDRSTRLEN];
159 struct sockaddr_storage sa;
163 /* global variables */
164 extern struct aliases aliases;
165 extern struct config config;
166 extern struct strlist tmpfs;
167 extern struct authusers authusers;
168 extern char username[USERNAME_SIZE];
169 extern uid_t useruid;
170 extern const char *logident_base;
172 extern char neterr[ERRMSG_SIZE];
173 extern char errmsg[ERRMSG_SIZE];
175 /* aliases_parse.y */
179 void trim_line(char *);
180 void parse_conf(const char *);
181 void parse_authfile(const char *);
184 void hmac_md5(unsigned char *, int, unsigned char *, int, unsigned char *);
185 int smtp_auth_md5(int, char *, char *);
186 int smtp_init_crypto(int, int);
189 int dns_get_mx_list(const char *, int, struct mx_hostentry **, int);
192 char *ssl_errstr(void);
193 int read_remote(int, int, char *);
194 ssize_t send_remote_command(int, const char*, ...) __attribute__((__nonnull__(2), __format__ (__printf__, 2, 3)));
195 int deliver_remote(struct qitem *);
198 int base64_encode(const void *, int, char **);
199 int base64_decode(const char *, void *);
202 #define EXPAND_ADDR 1
203 #define EXPAND_WILDCARD 2
204 int add_recp(struct queue *, const char *, int);
205 void run_queue(struct queue *);
208 int newspoolf(struct queue *);
209 int linkspool(struct queue *);
210 int load_queue(struct queue *);
211 void delqueue(struct qitem *);
212 int acquirespool(struct qitem *);
213 void dropspool(struct queue *, struct qitem *);
214 int flushqueue_since(unsigned int);
215 int flushqueue_signal(void);
218 int deliver_local(struct qitem *);
221 void bounce(struct qitem *, const char *) __attribute__((__noreturn__));
222 int readmail(struct queue *, int, int);
225 const char *hostname(void);
226 void setlogident(const char *, ...) __attribute__((__format__ (__printf__, 1, 2)));
227 void errlog(int, const char *, ...) __attribute__((__format__ (__printf__, 2, 3))) __attribute__((__noreturn__));
228 void errlogx(int, const char *, ...) __attribute__((__format__ (__printf__, 2, 3))) __attribute__((__noreturn__));
229 void set_username(void);
231 int do_timeout(int, int);
232 int open_locked(const char *, int, ...);
233 char *rfc822date(void);
234 int strprefixcmp(const char *, const char *);
235 void init_random(void);