libexec/dma/dma.h

   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"
  48
  49 #define BUF_SIZE        2048
  50 #define MIN_RETRY       300             /* 5 minutes */
  51 #define MAX_RETRY       (3*60*60)       /* retry at least every 3 hours */
  52 #define MAX_TIMEOUT     (5*24*60*60)    /* give up after 5 days */
  53 #ifndef PATH_MAX
  54 #define PATH_MAX        1024            /* Max path len */
  55 #endif
  56 #define SMTP_PORT       25              /* Default SMTP port */
  57 #define CON_TIMEOUT     120             /* Connection timeout */
  58
  59 #define VIRTUAL         0x001           /* Support for address rewrites */
  60 #define STARTTLS        0x002           /* StartTLS support */
  61 #define SECURETRANS     0x004           /* SSL/TLS in general */
  62 #define NOSSL           0x008           /* Do not use SSL */
  63 #define DEFER           0x010           /* Defer mails */
  64 #define INSECURE        0x020           /* Allow plain login w/o encryption */
  65 #define FULLBOUNCE      0x040           /* Bounce the full message */
  66
  67 #ifndef CONF_PATH
  68 #define CONF_PATH       "/etc/dma/dma.conf"     /* Default path to dma.conf */
  69 #endif
  70
  71 struct stritem {
  72         SLIST_ENTRY(stritem) next;
  73         char *str;
  74 };
  75 SLIST_HEAD(strlist, stritem);
  76
  77 struct alias {
  78         LIST_ENTRY(alias) next;
  79         char *alias;
  80         struct strlist dests;
  81 };
  82 LIST_HEAD(aliases, alias);
  83
  84 struct qitem {
  85         LIST_ENTRY(qitem) next;
  86         const char *sender;
  87         char *addr;
  88         char *queuefn;
  89         char *mailfn;
  90         char *queueid;
  91         FILE *queuef;
  92         FILE *mailf;
  93         int remote;
  94 };
  95 LIST_HEAD(queueh, qitem);
  96
  97 struct queue {
  98         struct queueh queue;
  99         char *id;
 100         FILE *mailf;
 101         char *tmpf;
 102         const char *sender;
 103 };
 104
 105 struct config {
 106         const char *smarthost;
 107         int port;
 108         const char *aliases;
 109         const char *spooldir;
 110         const char *virtualpath;
 111         const char *authpath;
 112         const char *certfile;
 113         int features;
 114         const char *mailname;
 115         const char *mailnamefile;
 116
 117         /* XXX does not belong into config */
 118         SSL *ssl;
 119 };
 120
 121
 122 struct virtuser {
 123         SLIST_ENTRY(virtuser) next;
 124         char *login;
 125         char *address;
 126 };
 127 SLIST_HEAD(virtusers, virtuser);
 128
 129 struct authuser {
 130         SLIST_ENTRY(authuser) next;
 131         char *login;
 132         char *password;
 133         char *host;
 134 };
 135 SLIST_HEAD(authusers, authuser);
 136
 137
 138 struct mx_hostentry {
 139         char            host[MAXDNAME];
 140         char            addr[INET6_ADDRSTRLEN];
 141         int             pref;
 142         struct addrinfo ai;
 143         struct sockaddr_storage sa;
 144 };
 145
 146
 147 /* global variables */
 148 extern struct aliases aliases;
 149 extern struct config config;
 150 extern struct strlist tmpfs;
 151 extern struct virtusers virtusers;
 152 extern struct authusers authusers;
 153 extern const char *username;
 154 extern const char *logident_base;
 155
 156 extern char neterr[BUF_SIZE];
 157
 158 /* aliases_parse.y */
 159 int yyparse(void);
 160 extern FILE *yyin;
 161
 162 /* conf.c */
 163 void trim_line(char *);
 164 void parse_conf(const char *);
 165 void parse_virtuser(const char *);
 166 void parse_authfile(const char *);
 167
 168 /* crypto.c */
 169 void hmac_md5(unsigned char *, int, unsigned char *, int, caddr_t);
 170 int smtp_auth_md5(int, char *, char *);
 171 int smtp_init_crypto(int, int);
 172
 173 /* dns.c */
 174 int dns_get_mx_list(const char *, int, struct mx_hostentry **, int);
 175
 176 /* net.c */
 177 char *ssl_errstr(void);
 178 int read_remote(int, int, char *);
 179 ssize_t send_remote_command(int, const char*, ...);
 180 int deliver_remote(struct qitem *, const char **);
 181
 182 /* base64.c */
 183 int base64_encode(const void *, int, char **);
 184 int base64_decode(const char *, void *);
 185
 186 /* dma.c */
 187 int add_recp(struct queue *, const char *, int);
 188 void run_queue(struct queue *);
 189
 190 /* spool.c */
 191 int newspoolf(struct queue *);
 192 int linkspool(struct queue *);
 193 int load_queue(struct queue *);
 194 void delqueue(struct qitem *);
 195 int acquirespool(struct qitem *);
 196 void dropspool(struct queue *, struct qitem *);
 197
 198 /* local.c */
 199 int deliver_local(struct qitem *, const char **errmsg);
 200
 201 /* mail.c */
 202 void bounce(struct qitem *, const char *);
 203 int readmail(struct queue *, int, int);
 204
 205 /* util.c */
 206 const char *hostname(void);
 207 void setlogident(const char *, ...);
 208 void errlog(int, const char *, ...);
 209 void errlogx(int, const char *, ...);
 210 void set_username(void);
 211 void deltmp(void);
 212 int open_locked(const char *, int, ...);
 213 char *rfc822date(void);
 214 int strprefixcmp(const char *, const char *);
 215
 216 #endif