1/*++
2/* NAME
3/*	input_transp 3
4/* SUMMARY
5/*	receive transparency control
6/* SYNOPSIS
7/*	#include <input_transp.h>
8/*
9/*	int	input_transp_mask(param_name, pattern)
10/*	const char *param_name;
11/*	const char *pattern;
12/*
13/*	int	input_transp_cleanup(cleanup_flags, transp_mask)
14/*	int	cleanup_flags;
15/*	int	transp_mask;
16/* DESCRIPTION
17/*	This module controls how much processing happens before mail is
18/*	written to the Postfix queue. Each transparency option is either
19/*	implemented by a client of the cleanup service, or is passed
20/*	along in a client request to the cleanup service. This eliminates
21/*	the need to configure multiple cleanup service instances.
22/*
23/*	input_transp_mask() takes a comma-separated list of names and
24/*	computes the corresponding mask. The following names are
25/*	recognized in \fBpattern\fR, with the corresponding bit mask
26/*	given in parentheses:
27/* .IP "no_unknown_recipient_checks (INPUT_TRANSP_UNKNOWN_RCPT)"
28/*	Do not try to reject unknown recipients.
29/* .IP "no_address_mappings (INPUT_TRANSP_ADDRESS_MAPPING)"
30/*	Disable canonical address mapping, virtual alias map expansion,
31/*	address masquerading, and automatic BCC recipients.
32/* .IP "no_header_body_checks (INPUT_TRANSP_HEADER_BODY)"
33/*	Disable header/body_checks.
34/* .IP "no_milters (INPUT_TRANSP_MILTER)"
35/*	Disable Milter applications.
36/*
37/*	input_transp_cleanup() takes a bunch of cleanup processing
38/*	flags and updates them according to the settings in the
39/*	specified input transparency mask.
40/* DIAGNOSTICS
41/*	Panic: inappropriate use.
42/* LICENSE
43/* .ad
44/* .fi
45/*	The Secure Mailer license must be distributed with this software.
46/* AUTHOR(S)
47/*	Wietse Venema
48/*	IBM T.J. Watson Research
49/*	P.O. Box 704
50/*	Yorktown Heights, NY 10598, USA
51/*--*/
52
53/* System library. */
54
55#include <sys_defs.h>
56
57/* Utility library. */
58
59#include <name_mask.h>
60#include <msg.h>
61
62/* Global library. */
63
64#include <mail_params.h>
65#include <cleanup_user.h>
66#include <input_transp.h>
67
68/* input_transp_mask - compute mail receive transparency mask */
69
70int     input_transp_mask(const char *param_name, const char *pattern)
71{
72    static const NAME_MASK table[] = {
73	"no_unknown_recipient_checks", INPUT_TRANSP_UNKNOWN_RCPT,
74	"no_address_mappings", INPUT_TRANSP_ADDRESS_MAPPING,
75	"no_header_body_checks", INPUT_TRANSP_HEADER_BODY,
76	"no_milters", INPUT_TRANSP_MILTER,
77	0,
78    };
79
80    return (name_mask(param_name, table, pattern));
81}
82
83/* input_transp_cleanup - adjust cleanup options */
84
85int     input_transp_cleanup(int cleanup_flags, int transp_mask)
86{
87    const char *myname = "input_transp_cleanup";
88
89    if (msg_verbose)
90	msg_info("before %s: cleanup flags = %s",
91		 myname, cleanup_strflags(cleanup_flags));
92    if (transp_mask & INPUT_TRANSP_ADDRESS_MAPPING)
93	cleanup_flags &= ~(CLEANUP_FLAG_BCC_OK | CLEANUP_FLAG_MAP_OK);
94    if (transp_mask & INPUT_TRANSP_HEADER_BODY)
95	cleanup_flags &= ~CLEANUP_FLAG_FILTER;
96    if (transp_mask & INPUT_TRANSP_MILTER)
97	cleanup_flags &= ~CLEANUP_FLAG_MILTER;
98    if (msg_verbose)
99	msg_info("after %s: cleanup flags = %s",
100		 myname, cleanup_strflags(cleanup_flags));
101    return (cleanup_flags);
102}
103