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lmtpengine.h
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lmtpengine.h
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/* lmtpengine.h: lmtp protocol engine interface
*
* Copyright (c) 1994-2008 Carnegie Mellon University. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The name "Carnegie Mellon University" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For permission or any legal
* details, please contact
* Carnegie Mellon University
* Center for Technology Transfer and Enterprise Creation
* 4615 Forbes Avenue
* Suite 302
* Pittsburgh, PA 15213
* (412) 268-7393, fax: (412) 268-7395
* innovation@andrew.cmu.edu
*
* 4. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by Computing Services
* at Carnegie Mellon University (http://www.cmu.edu/computing/)."
*
* CARNEGIE MELLON UNIVERSITY DISCLAIMS ALL WARRANTIES WITH REGARD TO
* THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS, IN NO EVENT SHALL CARNEGIE MELLON UNIVERSITY BE LIABLE
* FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
* AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef LMTPENGINE_H
#define LMTPENGINE_H
/***************** server-side LMTP *******************/
#include "xmalloc.h"
#include "spool.h"
#include "mboxname.h"
#include "quota.h"
#include "jmap_mail_query.h"
typedef struct message_data message_data_t;
typedef struct address_data address_data_t;
struct message_data {
struct protstream *data; /* message in temp file */
FILE *f; /* FILE * corresponding */
long body_offset; /* offset of msg body in file */
char *id; /* message id */
int size; /* size of message */
/* msg envelope */
char *return_path; /* where to return message */
const struct namespace *ns; /* namespace for recipients */
address_data_t **rcpt; /* to recipients of this message */
int rcpt_num; /* number of recipients */
char *date; /* date field of header */
/* auth state */
char *authuser;
struct auth_state *authstate;
void *rock;
hdrcache_t hdrcache;
};
/* return the corresponding header */
const char **msg_getheader(message_data_t *m, const char *phead);
/* return message size */
int msg_getsize(message_data_t *m);
/* return # of recipients */
int msg_getnumrcpt(message_data_t *m);
/* return delivery destination of recipient 'rcpt_num' */
const mbname_t *msg_getrcpt(message_data_t *m, int rcpt_num);
/* return entire recipient of 'rcpt_num' */
const char *msg_getrcptall(message_data_t *m, int rcpt_num);
/* return ignorequota flag of 'rcpt_num' */
int msg_getrcpt_ignorequota(message_data_t *m, int rcpt_num);
/* set a recipient status; 'r' should be an IMAP error code that will be
translated into an LMTP status code */
void msg_setrcpt_status(message_data_t *m, int rcpt_num, int r, strarray_t *resp);
void *msg_getrock(message_data_t *m);
void msg_setrock(message_data_t *m, void *rock);
struct addheader {
const char *name;
const char *body;
};
struct lmtp_func {
int (*deliver)(message_data_t *m,
char *authuser, const struct auth_state *authstate, const struct namespace *ns);
int (*verify_user)(const mbname_t *mbname,
quota_t quotastorage_check, /* user must have this much storage quota left
(-1 means don't care about quota) */
quota_t quotamessage_check, /* user must have this much message quota left
(-1 means don't care about quota) */
struct auth_state *authstate);
void (*shutdown)(int code);
FILE *(*spoolfile)(message_data_t *m);
void (*removespool)(message_data_t *m);
struct namespace *namespace; /* mailbox namespace that we're working in */
struct addheader *addheaders; /* add these headers to all messages */
int addretpath; /* should i add a return-path header? */
int preauth; /* preauth connection? */
};
/* run LMTP on 'pin' and 'pout', doing callbacks to 'func' where appropriate
*
* will call signals_poll() on occasion.
* will return when connection closes.
*/
void lmtpmode(struct lmtp_func *func,
struct protstream *pin,
struct protstream *pout,
int fd);
/************** client-side LMTP ****************/
#include "backend.h"
enum {
/* LMTP capabilities */
CAPA_PIPELINING = (1 << 3),
CAPA_IGNOREQUOTA = (1 << 4)
};
struct lmtp_txn {
const char *from;
const char *auth;
int isdotstuffed; /* 1 if 'data' is a dotstuffed stream
(including end-of-file \r\n.\r\n) */
int tempfail_unknown_mailbox; /* 1 if '550 5.1.1 unknown mailbox'
* should be masked as a temporary failure */
struct protstream *data;
int rcpt_num;
struct lmtp_rcpt {
char *addr;
int ignorequota;
enum {
RCPT_GOOD,
RCPT_TEMPFAIL,
RCPT_PERMFAIL
} result;
int r; /* if non-zero,
a more descriptive error code */
strarray_t *resp;
} rcpt[1];
};
#define LMTP_TXN_ALLOC(n) (xzmalloc(sizeof(struct lmtp_txn) + \
((n) * (sizeof(struct lmtp_rcpt)))))
int lmtp_runtxn(struct backend *conn, struct lmtp_txn *txn);
#endif /* LMTPENGINE_H */

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