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/*++
/* NAME
/* virtual 3h
/* SUMMARY
/* virtual mail delivery
/* SYNOPSIS
/* #include "virtual.h"
/* DESCRIPTION
/* .nf
/*
* System library.
*/
#include <unistd.h>
/*
* Utility library.
*/
#include <vstream.h>
#include <vstring.h>
/*
* Global library.
*/
#include <deliver_request.h>
#include <maps.h>
#include <mbox_conf.h>
#include <dsn_buf.h>
#include <dsn.h>
/*
* Mappings.
*/
extern MAPS *virtual_mailbox_maps;
extern MAPS *virtual_uid_maps;
extern MAPS *virtual_gid_maps;
/*
* User attributes: these control the privileges for delivery to external
* commands, external files, or mailboxes, and the initial environment of
* external commands.
*/
typedef struct USER_ATTR {
uid_t uid; /* file/command access */
gid_t gid; /* file/command access */
char *mailbox; /* mailbox file or directory */
} USER_ATTR;
/*
* Critical macros. Not for obscurity, but to ensure consistency.
*/
#define RESET_USER_ATTR(usr_attr, level) { \
usr_attr.uid = 0; usr_attr.gid = 0; usr_attr.mailbox = 0; \
if (msg_verbose) \
msg_info("%s[%d]: reset user_attr", myname, level); \
}
/*
* The delivery attributes are inherited from files, from aliases, and from
* whatnot. Some of the information is changed on the fly. DELIVER_ATTR
* structures are therefore passed by value, so there is no need to undo
* changes.
*/
typedef struct DELIVER_ATTR {
int level; /* recursion level */
VSTREAM *fp; /* open queue file */
char *queue_name; /* mail queue id */
char *queue_id; /* mail queue id */
long offset; /* data offset */
const char *sender; /* taken from envelope */
char *dsn_envid; /* DSN envelope ID */
int dsn_ret; /* DSN headers/full */
RECIPIENT rcpt; /* from delivery request */
char *user; /* recipient lookup handle */
const char *delivered; /* for loop detection */
char *relay; /* relay host */
MSG_STATS msg_stats; /* time profile */
DSN_BUF *why; /* delivery status */
} DELIVER_ATTR;
extern void deliver_attr_init(DELIVER_ATTR *);
extern void deliver_attr_dump(DELIVER_ATTR *);
extern void deliver_attr_free(DELIVER_ATTR *);
#define FEATURE_NODELIVERED (1<<0) /* no delivered-to */
/*
* Rather than schlepping around dozens of arguments, here is one that has
* all. Well, almost. The user attributes are just a bit too sensitive, so
* they are passed around separately.
*/
typedef struct LOCAL_STATE {
int level; /* nesting level, for logging */
DELIVER_ATTR msg_attr; /* message/recipient attributes */
DELIVER_REQUEST *request; /* as from queue manager */
} LOCAL_STATE;
/*
* Bundle up some often-user attributes.
*/
#define BOUNCE_FLAGS(request) DEL_REQ_TRACE_FLAGS((request)->flags)
#define BOUNCE_ATTR(attr) \
attr.queue_id, &attr.msg_stats, &attr.rcpt, attr.relay, \
DSN_FROM_DSN_BUF(attr.why)
#define SENT_ATTR(attr) \
attr.queue_id, &attr.msg_stats, &attr.rcpt, attr.relay, \
DSN_FROM_DSN_BUF(attr.why)
#define COPY_ATTR(attr) \
attr.sender, attr.rcpt.orig_addr, attr.delivered, attr.fp
#define MSG_LOG_STATE(m, p) \
msg_info("%s[%d]: recip %s deliver %s", m, \
p.level, \
p.msg_attr.rcpt.address ? p.msg_attr.rcpt.address : "", \
p.msg_attr.delivered ? p.msg_attr.delivered : "")
/*
* "inner" nodes of the delivery graph.
*/
extern int deliver_recipient(LOCAL_STATE, USER_ATTR);
/*
* "leaf" nodes of the delivery graph.
*/
extern int deliver_mailbox(LOCAL_STATE, USER_ATTR, int *);
extern int deliver_file(LOCAL_STATE, USER_ATTR, char *);
extern int deliver_maildir(LOCAL_STATE, USER_ATTR);
extern int deliver_unknown(LOCAL_STATE);
/*
* Mailbox lock protocol.
*/
extern int virtual_mbox_lock_mask;
/*
* Silly little macros.
*/
#define STR(s) vstring_str(s)
/* LICENSE
/* .ad
/* .fi
/* The Secure Mailer license must be distributed with this software.
/* AUTHOR(S)
/* Wietse Venema
/* IBM T.J. Watson Research
/* P.O. Box 704
/* Yorktown Heights, NY 10598, USA
/*--*/
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