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      1 /*	$NetBSD: smtputf8.c,v 1.3 2025/02/25 19:15:46 christos Exp $	*/
      2 
      3 /*++
      4 /* NAME
      5 /*	smtputf8 3
      6 /* SUMMARY
      7 /*	SMTPUTF8 support
      8 /* SYNOPSIS
      9 /*	#include <smtputf8.h>
     10 /*
     11 /*	int	smtputf8_autodetect(class)
     12 /*	int	class;
     13 /* DESCRIPTION
     14 /*	smtputf8_autodetect() determines whether the cleanup server
     15 /*	should perform SMTPUTF8 detection, depending on the declared
     16 /*	source class and the setting of the smtputf8_autodetect_classes
     17 /*	configuration parameter.
     18 /*
     19 /*	Specify one of the following:
     20 /* .IP MAIL_SRC_MASK_SENDMAIL
     21 /*	Submission with the Postfix sendmail(1) command.
     22 /* .IP MAIL_SRC_MASK_SMTPD
     23 /*	Mail received with the smtpd(8) daemon.
     24 /* .IP MAIL_SRC_MASK_QMQPD
     25 /*	Mail received with the qmqpd(8) daemon.
     26 /* .IP MAIL_SRC_MASK_FORWARD
     27 /*	Local forwarding or aliasing.
     28 /* .IP MAIL_SRC_MASK_BOUNCE
     29 /*	Submission by the bounce(8) daemon.
     30 /* .IP MAIL_SRC_MASK_NOTIFY
     31 /*	Postmaster notification from the smtp(8) or smtpd(8) daemon.
     32 /* .IP MAIL_SRC_MASK_VERIFY
     33 /*	Address verification probe.
     34 /* DIAGNOSTICS
     35 /*	Panic: no valid class argument.
     36 /*
     37 /*	Specify one of the following:
     38 /*	Warning: the smtputf8_autodetect_classes parameter specifies
     39 /*	an invalid source category name.
     40 /* LICENSE
     41 /* .ad
     42 /* .fi
     43 /*	The Secure Mailer license must be distributed with this software.
     44 /* AUTHOR(S)
     45 /*	Wietse Venema
     46 /*	IBM T.J. Watson Research
     47 /*	P.O. Box 704
     48 /*	Yorktown Heights, NY 10598, USA
     49 /*--*/
     50 
     51 /* System library. */
     52 
     53 #include <sys_defs.h>
     54 
     55 /* Utility library. */
     56 
     57 #include <name_mask.h>
     58 #include <msg.h>
     59 
     60 /* Global library. */
     61 
     62 #include <mail_params.h>
     63 #include <cleanup_user.h>
     64 #include <mail_proto.h>
     65 #include <smtputf8.h>
     66 
     67 /* smtputf8_autodetect - enable SMTPUTF8 autodetection */
     68 
     69 int     smtputf8_autodetect(int class)
     70 {
     71     static const char myname[] = "smtputf8_autodetect";
     72     static const NAME_MASK table[] = {
     73 	MAIL_SRC_NAME_SENDMAIL, MAIL_SRC_MASK_SENDMAIL,
     74 	MAIL_SRC_NAME_SMTPD, MAIL_SRC_MASK_SMTPD,
     75 	MAIL_SRC_NAME_QMQPD, MAIL_SRC_MASK_QMQPD,
     76 	MAIL_SRC_NAME_FORWARD, MAIL_SRC_MASK_FORWARD,
     77 	MAIL_SRC_NAME_BOUNCE, MAIL_SRC_MASK_BOUNCE,
     78 	MAIL_SRC_NAME_NOTIFY, MAIL_SRC_MASK_NOTIFY,
     79 	MAIL_SRC_NAME_VERIFY, MAIL_SRC_MASK_VERIFY,
     80 	MAIL_SRC_NAME_ALL, MAIL_SRC_MASK_ALL,
     81 	0,
     82     };
     83     int     autodetect_classes = 0;
     84 
     85     if (class == 0 || (class & ~MAIL_SRC_MASK_ALL) != 0)
     86 	msg_panic("%s: bad source class: %d", myname, class);
     87     if (*var_smtputf8_autoclass) {
     88 	autodetect_classes =
     89 	    name_mask(VAR_SMTPUTF8_AUTOCLASS, table, var_smtputf8_autoclass);
     90 	if (autodetect_classes == 0)
     91 	    msg_warn("%s: bad input: %s", VAR_SMTPUTF8_AUTOCLASS,
     92 		     var_smtputf8_autoclass);
     93 	if (autodetect_classes & class)
     94 	    return (CLEANUP_FLAG_AUTOUTF8);
     95     }
     96     return (0);
     97 }
     98