1/*	$NetBSD$	*/
2
3/*++
4/* NAME
5/*	smtpd_proxy 3h
6/* SUMMARY
7/*	SMTP server pass-through proxy client
8/* SYNOPSIS
9/*	#include <smtpd.h>
10/*	#include <smtpd_proxy.h>
11/* DESCRIPTION
12/* .nf
13
14 /*
15  * Utility library.
16  */
17#include <vstream.h>
18#include <vstring.h>
19
20 /*
21  * Application-specific.
22  */
23typedef int PRINTFPTRLIKE(3, 4) (*SMTPD_PROXY_CMD_FN) (SMTPD_STATE *, int, const char *,...);
24typedef int PRINTFPTRLIKE(3, 4) (*SMTPD_PROXY_REC_FPRINTF_FN) (VSTREAM *, int, const char *,...);
25typedef int (*SMTPD_PROXY_REC_PUT_FN) (VSTREAM *, int, const char *, ssize_t);
26
27typedef struct SMTPD_PROXY {
28    /* Public. */
29    VSTREAM *stream;
30    VSTRING *request;			/* proxy request buffer */
31    VSTRING *reply;			/* proxy reply buffer */
32    SMTPD_PROXY_CMD_FN cmd;
33    SMTPD_PROXY_REC_FPRINTF_FN rec_fprintf;
34    SMTPD_PROXY_REC_PUT_FN rec_put;
35    /* Private. */
36    int     flags;
37    VSTREAM *service_stream;
38    const char *service_name;
39    int     timeout;
40    const char *ehlo_name;
41    const char *mail_from;
42} SMTPD_PROXY;
43
44#define SMTPD_PROXY_FLAG_SPEED_ADJUST	(1<<0)
45
46#define SMTPD_PROXY_NAME_SPEED_ADJUST	"speed_adjust"
47
48#define SMTPD_PROX_WANT_BAD	0xff	/* Do not use */
49#define SMTPD_PROX_WANT_NONE	'\0'	/* Do not receive reply */
50#define SMTPD_PROX_WANT_ANY	'0'	/* Expect any reply */
51#define SMTPD_PROX_WANT_OK	'2'	/* Expect 2XX reply */
52#define SMTPD_PROX_WANT_MORE	'3'	/* Expect 3XX reply */
53
54extern int smtpd_proxy_create(SMTPD_STATE *, int, const char *, int, const char *, const char *);
55extern void smtpd_proxy_close(SMTPD_STATE *);
56extern void smtpd_proxy_free(SMTPD_STATE *);
57extern int smtpd_proxy_parse_opts(const char *, const char *);
58
59/* LICENSE
60/* .ad
61/* .fi
62/*	The Secure Mailer license must be distributed with this software.
63/* AUTHOR(S)
64/*	Wietse Venema
65/*	IBM T.J. Watson Research
66/*	P.O. Box 704
67/*	Yorktown Heights, NY 10598, USA
68/*--*/
69