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 #ifndef __unused
  48 #ifdef __GNUC__
  49 #define __unused        __attribute__((unused))
  50 #else
  51 #define __unused
  52 #endif  /* __GNUC__ */
  53 #endif
  54
  55 #define VERSION "DragonFly Mail Agent"
  56
  57 #define BUF_SIZE        2048
  58 #define MIN_RETRY       300             /* 5 minutes */
  59 #define MAX_RETRY       (3*60*60)       /* retry at least every 3 hours */
  60 #define MAX_TIMEOUT     (5*24*60*60)    /* give up after 5 days */
  61 #ifndef PATH_MAX
  62 #define PATH_MAX        1024            /* Max path len */
  63 #endif
  64 #define SMTP_PORT       25              /* Default SMTP port */
  65 #define CON_TIMEOUT     120             /* Connection timeout */
  66
  67 #define VIRTUAL         0x001           /* Support for address rewrites */
  68 #define STARTTLS        0x002           /* StartTLS support */
  69 #define SECURETRANS     0x004           /* SSL/TLS in general */
  70 #define NOSSL           0x008           /* Do not use SSL */
  71 #define DEFER           0x010           /* Defer mails */
  72 #define INSECURE        0x020           /* Allow plain login w/o encryption */
  73 #define FULLBOUNCE      0x040           /* Bounce the full message */
  74
  75 #ifndef CONF_PATH
  76 #define CONF_PATH       "/etc/dma/dma.conf"     /* Default path to dma.conf */
  77 #endif
  78
  79 struct stritem {
  80         SLIST_ENTRY(stritem) next;
  81         char *str;
  82 };
  83 SLIST_HEAD(strlist, stritem);
  84
  85 struct alias {
  86         LIST_ENTRY(alias) next;
  87         char *alias;
  88         struct strlist dests;
  89 };
  90 LIST_HEAD(aliases, alias);
  91
  92 struct qitem {
  93         LIST_ENTRY(qitem) next;
  94         const char *sender;
  95         char *addr;
  96         char *queuefn;
  97         char *mailfn;
  98         char *queueid;
  99         FILE *queuef;
 100         FILE *mailf;
 101         int remote;
 102 };
 103 LIST_HEAD(queueh, qitem);
 104
 105 struct queue {
 106         struct queueh queue;
 107         char *id;
 108         FILE *mailf;
 109         char *tmpf;
 110         const char *sender;
 111 };
 112
 113 struct config {
 114         const char *smarthost;
 115         int port;
 116         const char *aliases;
 117         const char *spooldir;
 118         const char *virtualpath;
 119         const char *authpath;
 120         const char *certfile;
 121         int features;
 122         const char *mailname;
 123         const char *mailnamefile;
 124
 125         /* XXX does not belong into config */
 126         SSL *ssl;
 127 };
 128
 129
 130 struct virtuser {
 131         SLIST_ENTRY(virtuser) next;
 132         char *login;
 133         char *address;
 134 };
 135 SLIST_HEAD(virtusers, virtuser);
 136
 137 struct authuser {
 138         SLIST_ENTRY(authuser) next;
 139         char *login;
 140         char *password;
 141         char *host;
 142 };
 143 SLIST_HEAD(authusers, authuser);
 144
 145
 146 struct mx_hostentry {
 147         char            host[MAXDNAME];
 148         char            addr[INET6_ADDRSTRLEN];
 149         int             pref;
 150         struct addrinfo ai;
 151         struct sockaddr_storage sa;
 152 };
 153
 154
 155 /* global variables */
 156 extern struct aliases aliases;
 157 extern struct config config;
 158 extern struct strlist tmpfs;
 159 extern struct virtusers virtusers;
 160 extern struct authusers authusers;
 161 extern const char *username;
 162 extern const char *logident_base;
 163
 164 extern char neterr[BUF_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_virtuser(const char *);
 174 void parse_authfile(const char *);
 175
 176 /* crypto.c */
 177 void hmac_md5(unsigned char *, int, unsigned char *, int, caddr_t);
 178 int smtp_auth_md5(int, char *, char *);
 179 int smtp_init_crypto(int, int);
 180
 181 /* dns.c */
 182 int dns_get_mx_list(const char *, int, struct mx_hostentry **, int);
 183
 184 /* net.c */
 185 char *ssl_errstr(void);
 186 int read_remote(int, int, char *);
 187 ssize_t send_remote_command(int, const char*, ...);
 188 int deliver_remote(struct qitem *, const char **);
 189
 190 /* base64.c */
 191 int base64_encode(const void *, int, char **);
 192 int base64_decode(const char *, void *);
 193
 194 /* dma.c */
 195 int add_recp(struct queue *, const char *, int);
 196 void run_queue(struct queue *);
 197
 198 /* spool.c */
 199 int newspoolf(struct queue *);
 200 int linkspool(struct queue *);
 201 int load_queue(struct queue *);
 202 void delqueue(struct qitem *);
 203 int acquirespool(struct qitem *);
 204 void dropspool(struct queue *, struct qitem *);
 205
 206 /* local.c */
 207 int deliver_local(struct qitem *, const char **errmsg);
 208
 209 /* mail.c */
 210 void bounce(struct qitem *, const char *);
 211 int readmail(struct queue *, int, int);
 212
 213 /* util.c */
 214 const char *hostname(void);
 215 void setlogident(const char *, ...);
 216 void errlog(int, const char *, ...);
 217 void errlogx(int, const char *, ...);
 218 void set_username(void);
 219 void deltmp(void);
 220 int open_locked(const char *, int, ...);
 221 char *rfc822date(void);
 222 int strprefixcmp(const char *, const char *);
 223
 224 #endif