1 /* 2 * Copyright (c) 2008 The DragonFly Project. All rights reserved. 3 * 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>. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 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 17 * distribution. 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. 21 * 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 33 * SUCH DAMAGE. 34 */ 35 36 #ifndef DMA_H 37 #define DMA_H 38 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> 45 #include <netdb.h> 46 47 #define VERSION "DragonFly Mail Agent " DMA_VERSION 48 49 #define BUF_SIZE 2048 50 #define ERRMSG_SIZE 200 51 #define USERNAME_SIZE 50 52 #define MIN_RETRY 300 /* 5 minutes */ 53 #define MAX_RETRY (3*60*60) /* retry at least every 3 hours */ 54 #define MAX_TIMEOUT (5*24*60*60) /* give up after 5 days */ 55 #ifndef PATH_MAX 56 #define PATH_MAX 1024 /* Max path len */ 57 #endif 58 #define SMTP_PORT 25 /* Default SMTP port */ 59 #define CON_TIMEOUT (5*60) /* Connection timeout per RFC5321 */ 60 61 #define STARTTLS 0x002 /* StartTLS support */ 62 #define SECURETRANS 0x004 /* SSL/TLS in general */ 63 #define NOSSL 0x008 /* Do not use SSL */ 64 #define DEFER 0x010 /* Defer mails */ 65 #define INSECURE 0x020 /* Allow plain login w/o encryption */ 66 #define FULLBOUNCE 0x040 /* Bounce the full message */ 67 #define TLS_OPP 0x080 /* Opportunistic STARTTLS */ 68 69 #ifndef CONF_PATH 70 #error Please define CONF_PATH 71 #endif 72 73 #ifndef LIBEXEC_PATH 74 #error Please define LIBEXEC_PATH 75 #endif 76 77 #define DMA_ROOT_USER "mail" 78 #define DMA_GROUP "mail" 79 80 #ifndef MBOX_STRICT 81 #define MBOX_STRICT 0 82 #endif 83 84 85 struct stritem { 86 SLIST_ENTRY(stritem) next; 87 char *str; 88 }; 89 SLIST_HEAD(strlist, stritem); 90 91 struct alias { 92 LIST_ENTRY(alias) next; 93 char *alias; 94 struct strlist dests; 95 }; 96 LIST_HEAD(aliases, alias); 97 98 struct qitem { 99 LIST_ENTRY(qitem) next; 100 const char *sender; 101 char *addr; 102 char *queuefn; 103 char *mailfn; 104 char *queueid; 105 FILE *queuef; 106 FILE *mailf; 107 int remote; 108 }; 109 LIST_HEAD(queueh, qitem); 110 111 struct queue { 112 struct queueh queue; 113 char *id; 114 FILE *mailf; 115 char *tmpf; 116 const char *sender; 117 }; 118 119 struct config { 120 const char *smarthost; 121 int port; 122 const char *aliases; 123 const char *spooldir; 124 const char *authpath; 125 const char *certfile; 126 int features; 127 const char *mailname; 128 const char *masquerade_host; 129 const char *masquerade_user; 130 131 /* XXX does not belong into config */ 132 SSL *ssl; 133 }; 134 135 136 struct authuser { 137 SLIST_ENTRY(authuser) next; 138 char *login; 139 char *password; 140 char *host; 141 }; 142 SLIST_HEAD(authusers, authuser); 143 144 145 struct mx_hostentry { 146 char host[MAXDNAME]; 147 char addr[INET6_ADDRSTRLEN]; 148 int pref; 149 struct addrinfo ai; 150 struct sockaddr_storage sa; 151 }; 152 153 154 /* global variables */ 155 extern struct aliases aliases; 156 extern struct config config; 157 extern struct strlist tmpfs; 158 extern struct authusers authusers; 159 extern char username[USERNAME_SIZE]; 160 extern uid_t useruid; 161 extern const char *logident_base; 162 163 extern char neterr[ERRMSG_SIZE]; 164 extern char errmsg[ERRMSG_SIZE]; 165 166 /* aliases_parse.y */ 167 int yyparse(void); 168 extern FILE *yyin; 169 170 /* conf.c */ 171 void trim_line(char *); 172 void parse_conf(const char *); 173 void parse_authfile(const char *); 174 175 /* crypto.c */ 176 void hmac_md5(unsigned char *, int, unsigned char *, int, unsigned char *); 177 int smtp_auth_md5(int, char *, char *); 178 int smtp_init_crypto(int, int); 179 180 /* dns.c */ 181 int dns_get_mx_list(const char *, int, struct mx_hostentry **, int); 182 183 /* net.c */ 184 char *ssl_errstr(void); 185 int read_remote(int, int, char *); 186 ssize_t send_remote_command(int, const char*, ...) __printflike(2, 3); 187 int deliver_remote(struct qitem *); 188 189 /* base64.c */ 190 int base64_encode(const void *, int, char **); 191 int base64_decode(const char *, void *); 192 193 /* dma.c */ 194 #define EXPAND_ADDR 1 195 #define EXPAND_WILDCARD 2 196 int add_recp(struct queue *, const char *, int); 197 void run_queue(struct queue *); 198 199 /* spool.c */ 200 int newspoolf(struct queue *); 201 int linkspool(struct queue *); 202 int load_queue(struct queue *); 203 void delqueue(struct qitem *); 204 int acquirespool(struct qitem *); 205 void dropspool(struct queue *, struct qitem *); 206 207 /* local.c */ 208 int deliver_local(struct qitem *); 209 210 /* mail.c */ 211 void bounce(struct qitem *, const char *); 212 int readmail(struct queue *, int, int); 213 214 /* util.c */ 215 const char *hostname(void); 216 void setlogident(const char *, ...) __printf0like(1, 2); 217 void errlog(int, const char *, ...) __printf0like(2, 3); 218 void errlogx(int, const char *, ...) __printf0like(2, 3); 219 void set_username(void); 220 void deltmp(void); 221 int do_timeout(int, int); 222 int open_locked(const char *, int, ...); 223 char *rfc822date(void); 224 int strprefixcmp(const char *, const char *); 225 void init_random(void); 226 227 #endif 228