a9e8641da9
It is a small and lightweight Mail Transport Agent. It accepts mails from locally installed Mail User Agents (MUA) and delivers the mails either locally or to a remote destination. Remote delivery includes several features like TLS/SSL support, SMTP authentication and NULLCLIENT. Make dma conditional to new WITHOUT_DMA option and make it respect WITHOUT_MAIL Reviewed by: peter Discussed with: emaste, bz, peter
238 lines
6.3 KiB
C
238 lines
6.3 KiB
C
/*
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* Copyright (c) 2008 The DragonFly Project. All rights reserved.
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*
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* This code is derived from software contributed to The DragonFly Project
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* by Simon 'corecode' Schubert <corecode@fs.ei.tum.de> and
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* Matthias Schmidt <matthias@dragonflybsd.org>.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name of The DragonFly Project nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific, prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef DMA_H
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#define DMA_H
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#include <sys/types.h>
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#include <sys/queue.h>
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#include <sys/socket.h>
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#include <arpa/nameser.h>
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#include <arpa/inet.h>
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#include <openssl/ssl.h>
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#include <netdb.h>
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#define VERSION "DragonFly Mail Agent " DMA_VERSION
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#define BUF_SIZE 2048
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#define ERRMSG_SIZE 200
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#define USERNAME_SIZE 50
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#define MIN_RETRY 300 /* 5 minutes */
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#define MAX_RETRY (3*60*60) /* retry at least every 3 hours */
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#define MAX_TIMEOUT (5*24*60*60) /* give up after 5 days */
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#define SLEEP_TIMEOUT 30 /* check for queue flush every 30 seconds */
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#ifndef PATH_MAX
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#define PATH_MAX 1024 /* Max path len */
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#endif
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#define SMTP_PORT 25 /* Default SMTP port */
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#define CON_TIMEOUT (5*60) /* Connection timeout per RFC5321 */
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#define STARTTLS 0x002 /* StartTLS support */
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#define SECURETRANS 0x004 /* SSL/TLS in general */
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#define NOSSL 0x008 /* Do not use SSL */
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#define DEFER 0x010 /* Defer mails */
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#define INSECURE 0x020 /* Allow plain login w/o encryption */
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#define FULLBOUNCE 0x040 /* Bounce the full message */
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#define TLS_OPP 0x080 /* Opportunistic STARTTLS */
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#define NULLCLIENT 0x100 /* Nullclient support */
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#ifndef CONF_PATH
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#error Please define CONF_PATH
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#endif
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#ifndef LIBEXEC_PATH
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#error Please define LIBEXEC_PATH
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#endif
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#define SPOOL_FLUSHFILE "flush"
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#ifndef DMA_ROOT_USER
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#define DMA_ROOT_USER "mail"
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#endif
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#ifndef DMA_GROUP
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#define DMA_GROUP "mail"
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#endif
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#ifndef MBOX_STRICT
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#define MBOX_STRICT 0
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#endif
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struct stritem {
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SLIST_ENTRY(stritem) next;
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char *str;
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};
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SLIST_HEAD(strlist, stritem);
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struct alias {
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LIST_ENTRY(alias) next;
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char *alias;
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struct strlist dests;
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};
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LIST_HEAD(aliases, alias);
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struct qitem {
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LIST_ENTRY(qitem) next;
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const char *sender;
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char *addr;
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char *queuefn;
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char *mailfn;
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char *queueid;
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FILE *queuef;
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FILE *mailf;
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int remote;
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};
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LIST_HEAD(queueh, qitem);
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struct queue {
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struct queueh queue;
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char *id;
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FILE *mailf;
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char *tmpf;
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const char *sender;
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};
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struct config {
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const char *smarthost;
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int port;
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const char *aliases;
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const char *spooldir;
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const char *authpath;
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const char *certfile;
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int features;
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const char *mailname;
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const char *masquerade_host;
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const char *masquerade_user;
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/* XXX does not belong into config */
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SSL *ssl;
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};
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struct authuser {
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SLIST_ENTRY(authuser) next;
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char *login;
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char *password;
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char *host;
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};
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SLIST_HEAD(authusers, authuser);
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struct mx_hostentry {
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char host[MAXDNAME];
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char addr[INET6_ADDRSTRLEN];
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int pref;
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struct addrinfo ai;
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struct sockaddr_storage sa;
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};
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/* global variables */
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extern struct aliases aliases;
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extern struct config config;
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extern struct strlist tmpfs;
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extern struct authusers authusers;
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extern char username[USERNAME_SIZE];
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extern uid_t useruid;
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extern const char *logident_base;
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extern char neterr[ERRMSG_SIZE];
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extern char errmsg[ERRMSG_SIZE];
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/* aliases_parse.y */
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int yyparse(void);
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extern FILE *yyin;
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/* conf.c */
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void trim_line(char *);
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void parse_conf(const char *);
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void parse_authfile(const char *);
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/* crypto.c */
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void hmac_md5(unsigned char *, int, unsigned char *, int, unsigned char *);
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int smtp_auth_md5(int, char *, char *);
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int smtp_init_crypto(int, int);
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/* dns.c */
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int dns_get_mx_list(const char *, int, struct mx_hostentry **, int);
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/* net.c */
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char *ssl_errstr(void);
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int read_remote(int, int, char *);
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ssize_t send_remote_command(int, const char*, ...) __attribute__((__nonnull__(2), __format__ (__printf__, 2, 3)));
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int deliver_remote(struct qitem *);
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/* base64.c */
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int base64_encode(const void *, int, char **);
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int base64_decode(const char *, void *);
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/* dma.c */
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#define EXPAND_ADDR 1
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#define EXPAND_WILDCARD 2
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int add_recp(struct queue *, const char *, int);
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void run_queue(struct queue *);
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/* spool.c */
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int newspoolf(struct queue *);
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int linkspool(struct queue *);
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int load_queue(struct queue *);
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void delqueue(struct qitem *);
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int acquirespool(struct qitem *);
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void dropspool(struct queue *, struct qitem *);
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int flushqueue_since(unsigned int);
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int flushqueue_signal(void);
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/* local.c */
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int deliver_local(struct qitem *);
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/* mail.c */
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void bounce(struct qitem *, const char *);
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int readmail(struct queue *, int, int);
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/* util.c */
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const char *hostname(void);
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void setlogident(const char *, ...) __attribute__((__format__ (__printf__, 1, 2)));
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void errlog(int, const char *, ...) __attribute__((__format__ (__printf__, 2, 3)));
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void errlogx(int, const char *, ...) __attribute__((__format__ (__printf__, 2, 3)));
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void set_username(void);
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void deltmp(void);
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int do_timeout(int, int);
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int open_locked(const char *, int, ...);
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char *rfc822date(void);
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int strprefixcmp(const char *, const char *);
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void init_random(void);
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#endif
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