1/* 2 * Copyright (c) 2008-2014, Simon Schubert <2@0x2c.org>. 3 * Copyright (c) 2008 The DragonFly Project. All rights reserved. 4 * 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>. 8 * 9 * Redistribution and use in source and binary forms, with or without 10 * modification, are permitted provided that the following conditions 11 * are met: 12 * 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 18 * distribution. 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. 22 * 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 34 * SUCH DAMAGE. 35 */ 36 37#ifndef DMA_H 38#define DMA_H 39 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> 46#include <netdb.h> 47#include <sysexits.h> 48 49#define VERSION "DragonFly Mail Agent " DMA_VERSION 50 51#define BUF_SIZE 2048 52#define ERRMSG_SIZE 1024 53#define USERNAME_SIZE 50 54#define MIN_RETRY 300 /* 5 minutes */ 55#define MAX_RETRY (3*60*60) /* retry at least every 3 hours */ 56#define MAX_TIMEOUT (5*24*60*60) /* give up after 5 days */ 57#define SLEEP_TIMEOUT 30 /* check for queue flush every 30 seconds */ 58#ifndef PATH_MAX 59#define PATH_MAX 1024 /* Max path len */ 60#endif 61#define SMTP_PORT 25 /* Default SMTP port */ 62#define CON_TIMEOUT (5*60) /* Connection timeout per RFC5321 */ 63 64#define STARTTLS 0x002 /* StartTLS support */ 65#define SECURETRANS 0x004 /* SSL/TLS in general */ 66#define NOSSL 0x008 /* Do not use SSL */ 67#define DEFER 0x010 /* Defer mails */ 68#define INSECURE 0x020 /* Allow plain login w/o encryption */ 69#define FULLBOUNCE 0x040 /* Bounce the full message */ 70#define TLS_OPP 0x080 /* Opportunistic STARTTLS */ 71#define NULLCLIENT 0x100 /* Nullclient support */ 72 73#ifndef CONF_PATH 74#error Please define CONF_PATH 75#endif 76 77#ifndef LIBEXEC_PATH 78#error Please define LIBEXEC_PATH 79#endif 80 81#define SPOOL_FLUSHFILE "flush" 82 83#ifndef DMA_ROOT_USER 84#define DMA_ROOT_USER "mail" 85#endif 86#ifndef DMA_GROUP 87#define DMA_GROUP "mail" 88#endif 89 90#ifndef MBOX_STRICT 91#define MBOX_STRICT 0 92#endif 93 94 95struct stritem { 96 SLIST_ENTRY(stritem) next; 97 char *str; 98}; 99SLIST_HEAD(strlist, stritem); 100 101struct alias { 102 LIST_ENTRY(alias) next; 103 char *alias; 104 struct strlist dests; 105}; 106LIST_HEAD(aliases, alias); 107 108struct qitem { 109 LIST_ENTRY(qitem) next; 110 const char *sender; 111 char *addr; 112 char *queuefn; 113 char *mailfn; 114 char *queueid; 115 FILE *queuef; 116 FILE *mailf; 117 int remote; 118}; 119LIST_HEAD(queueh, qitem); 120 121struct queue { 122 struct queueh queue; 123 char *id; 124 FILE *mailf; 125 char *tmpf; 126 const char *sender; 127}; 128 129struct config { 130 const char *smarthost; 131 int port; 132 const char *aliases; 133 const char *spooldir; 134 const char *authpath; 135 const char *certfile; 136 int features; 137 const char *mailname; 138 const char *masquerade_host; 139 const char *masquerade_user; 140 141 /* XXX does not belong into config */ 142 SSL *ssl; 143}; 144 145 146struct authuser { 147 SLIST_ENTRY(authuser) next; 148 char *login; 149 char *password; 150 char *host; 151}; 152SLIST_HEAD(authusers, authuser); 153 154 155struct mx_hostentry { 156 char host[MAXDNAME]; 157 char addr[INET6_ADDRSTRLEN]; 158 int pref; 159 struct addrinfo ai; 160 struct sockaddr_storage sa; 161}; 162 163 164/* global variables */ 165extern struct aliases aliases; 166extern struct config config; 167extern struct strlist tmpfs; 168extern struct authusers authusers; 169extern char username[USERNAME_SIZE]; 170extern uid_t useruid; 171extern const char *logident_base; 172 173extern char neterr[ERRMSG_SIZE]; 174extern char errmsg[ERRMSG_SIZE]; 175 176/* aliases_parse.y */ 177int yyparse(void); 178int yywrap(void); 179int yylex(void); 180extern FILE *yyin; 181 182/* conf.c */ 183void trim_line(char *); 184void parse_conf(const char *); 185void parse_authfile(const char *); 186 187/* crypto.c */ 188void hmac_md5(unsigned char *, int, unsigned char *, int, unsigned char *); 189int smtp_auth_md5(int, char *, char *); 190int smtp_init_crypto(int, int); 191 192/* dns.c */ 193int dns_get_mx_list(const char *, int, struct mx_hostentry **, int); 194 195/* net.c */ 196char *ssl_errstr(void); 197int read_remote(int, int, char *); 198ssize_t send_remote_command(int, const char*, ...) __attribute__((__nonnull__(2), __format__ (__printf__, 2, 3))); 199int deliver_remote(struct qitem *); 200 201/* base64.c */ 202int base64_encode(const void *, int, char **); 203int base64_decode(const char *, void *); 204 205/* dma.c */ 206#define EXPAND_ADDR 1 207#define EXPAND_WILDCARD 2 208int add_recp(struct queue *, const char *, int); 209void run_queue(struct queue *); 210 211/* spool.c */ 212int newspoolf(struct queue *); 213int linkspool(struct queue *); 214int load_queue(struct queue *); 215void delqueue(struct qitem *); 216int acquirespool(struct qitem *); 217void dropspool(struct queue *, struct qitem *); 218int flushqueue_since(unsigned int); 219int flushqueue_signal(void); 220 221/* local.c */ 222int deliver_local(struct qitem *); 223 224/* mail.c */ 225void bounce(struct qitem *, const char *); 226int readmail(struct queue *, int, int); 227 228/* util.c */ 229const char *hostname(void); 230void setlogident(const char *, ...) __attribute__((__format__ (__printf__, 1, 2))); 231void errlog(int, const char *, ...) __attribute__((__format__ (__printf__, 2, 3))); 232void errlogx(int, const char *, ...) __attribute__((__format__ (__printf__, 2, 3))); 233void set_username(void); 234void deltmp(void); 235int do_timeout(int, int); 236int open_locked(const char *, int, ...); 237char *rfc822date(void); 238int strprefixcmp(const char *, const char *); 239void init_random(void); 240 241#endif 242