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/*++
/* NAME
/* cleanup_addr 3
/* SUMMARY
/* process envelope addresses
/* SYNOPSIS
/* #include <cleanup.h>
/*
/* off_t cleanup_addr_sender(state, addr)
/* CLEANUP_STATE *state;
/* const char *addr;
/*
/* void cleanup_addr_recipient(state, addr)
/* CLEANUP_STATE *state;
/* const char *addr;
/*
/* void cleanup_addr_bcc_dsn(state, addr, dsn_orcpt, dsn_notify)
/* CLEANUP_STATE *state;
/* const char *addr;
/* const char *dsn_orcpt;
/* int dsn_notify;
/*
/* void cleanup_addr_bcc(state, addr)
/* CLEANUP_STATE *state;
/* const char *addr;
/* DESCRIPTION
/* This module processes envelope address records and writes the result
/* to the queue file. Processing includes address rewriting and
/* sender/recipient auto bcc address generation.
/*
/* cleanup_addr_sender() processes sender envelope information and updates
/* state->sender. The result value is the offset of the record that
/* follows the sender record if milters are enabled, otherwise zero.
/*
/* cleanup_addr_recipient() processes recipient envelope information
/* and updates state->recip.
/*
/* cleanup_addr_bcc_dsn() processes recipient envelope information. This
/* is a separate function to avoid invoking cleanup_addr_recipient()
/* recursively.
/*
/* cleanup_addr_bcc() is a backwards-compatibility wrapper for
/* cleanup_addr_bcc_dsn() that requests no delivery status
/* notification for the recipient.
/*
/* Arguments:
/* .IP state
/* Queue file and message processing state. This state is updated
/* as records are processed and as errors happen.
/* .IP buf
/* Record content.
/* .IP dsn_orcpt
/* The DSN original recipient (or NO_DSN_ORCPT to specify none).
/* .IP dsn_notify
/* DSN notification options. Specify NO_DSN_NOTIFY to disable
/* notification, and DEF_DSN_NOTIFY for default notification.
/* 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
/*
/* Wietse Venema
/* Google, Inc.
/* 111 8th Avenue
/* New York, NY 10011, USA
/*--*/
/* System library. */
#include <sys_defs.h>
#include <string.h>
#include <stdlib.h>
/* Utility library. */
#include <msg.h>
#include <vstring.h>
#include <vstream.h>
#include <mymalloc.h>
#include <stringops.h>
/* Global library. */
#include <rec_type.h>
#include <record.h>
#include <cleanup_user.h>
#include <mail_params.h>
#include <ext_prop.h>
#include <mail_addr.h>
#include <canon_addr.h>
#include <mail_addr_find.h>
#include <mail_proto.h>
#include <dsn_mask.h>
#include <smtputf8.h>
/* Application-specific. */
#include "cleanup.h"
#define STR vstring_str
#define LEN VSTRING_LEN
#define IGNORE_EXTENSION (char **) 0
/* cleanup_addr_sender - process envelope sender record */
off_t cleanup_addr_sender(CLEANUP_STATE *state, const char *buf)
{
const char myname[] = "cleanup_addr_sender";
VSTRING *clean_addr = vstring_alloc(100);
off_t after_sender_offs = 0;
const char *bcc;
size_t len;
/*
* Note: an unqualified envelope address is for all practical purposes
* equivalent to a fully qualified local address, both for delivery and
* for replying. Having to support both forms is error prone, therefore
* an incomplete envelope address is rewritten to fully qualified form in
* the local domain context.
*
* 20000520: Replace mailer-daemon@$myorigin by the null address, to handle
* bounced mail traffic more robustly.
*/
cleanup_rewrite_internal(MAIL_ATTR_RWR_LOCAL, clean_addr, buf);
if (strncasecmp_utf8(STR(clean_addr), MAIL_ADDR_MAIL_DAEMON "@",
sizeof(MAIL_ADDR_MAIL_DAEMON)) == 0) {
canon_addr_internal(state->temp1, MAIL_ADDR_MAIL_DAEMON);
if (strcasecmp_utf8(STR(clean_addr), STR(state->temp1)) == 0)
vstring_strcpy(clean_addr, "");
}
if (state->flags & CLEANUP_FLAG_MAP_OK) {
if (cleanup_send_canon_maps
&& (cleanup_send_canon_flags & CLEANUP_CANON_FLAG_ENV_FROM))
cleanup_map11_internal(state, clean_addr, cleanup_send_canon_maps,
cleanup_ext_prop_mask & EXT_PROP_CANONICAL);
if (cleanup_comm_canon_maps
&& (cleanup_comm_canon_flags & CLEANUP_CANON_FLAG_ENV_FROM))
cleanup_map11_internal(state, clean_addr, cleanup_comm_canon_maps,
cleanup_ext_prop_mask & EXT_PROP_CANONICAL);
if (cleanup_masq_domains
&& (cleanup_masq_flags & CLEANUP_MASQ_FLAG_ENV_FROM))
cleanup_masquerade_internal(state, clean_addr, cleanup_masq_domains);
}
/* Fix 20140711: Auto-detect an UTF8 sender. */
if (var_smtputf8_enable && *STR(clean_addr) && !allascii(STR(clean_addr))
&& valid_utf8_stringz(STR(clean_addr))) {
state->smtputf8 |= SMTPUTF8_FLAG_SENDER;
/* Fix 20140713: request SMTPUTF8 support selectively. */
if (state->flags & CLEANUP_FLAG_AUTOUTF8)
state->smtputf8 |= SMTPUTF8_FLAG_REQUESTED;
}
CLEANUP_OUT_BUF(state, REC_TYPE_FROM, clean_addr);
if (state->sender) /* XXX Can't happen */
myfree(state->sender);
state->sender = mystrdup(STR(clean_addr)); /* Used by Milter client */
/* Fix 20160310: Moved from cleanup_envelope.c. */
if (state->milters || cleanup_milters) {
/* Make room to replace sender. */
if ((len = LEN(clean_addr)) < REC_TYPE_PTR_PAYL_SIZE)
rec_pad(state->dst, REC_TYPE_PTR, REC_TYPE_PTR_PAYL_SIZE - len);
/* Remember the after-sender record offset. */
if ((after_sender_offs = vstream_ftell(state->dst)) < 0)
msg_fatal("%s: vstream_ftell %s: %m:", myname, cleanup_path);
}
if ((state->flags & CLEANUP_FLAG_BCC_OK)
&& *STR(clean_addr)
&& cleanup_send_bcc_maps) {
if ((bcc = mail_addr_find_to_internal(cleanup_send_bcc_maps,
STR(clean_addr),
IGNORE_EXTENSION)) != 0) {
cleanup_addr_bcc(state, bcc);
} else if (cleanup_send_bcc_maps->error) {
msg_warn("%s: %s map lookup problem -- "
"message not accepted, try again later",
state->queue_id, cleanup_send_bcc_maps->title);
state->errs |= CLEANUP_STAT_WRITE;
}
}
vstring_free(clean_addr);
return after_sender_offs;
}
/* cleanup_addr_recipient - process envelope recipient */
void cleanup_addr_recipient(CLEANUP_STATE *state, const char *buf)
{
VSTRING *clean_addr = vstring_alloc(100);
const char *bcc;
/*
* Note: an unqualified envelope address is for all practical purposes
* equivalent to a fully qualified local address, both for delivery and
* for replying. Having to support both forms is error prone, therefore
* an incomplete envelope address is rewritten to fully qualified form in
* the local domain context.
*/
cleanup_rewrite_internal(MAIL_ATTR_RWR_LOCAL,
clean_addr, *buf ? buf : var_empty_addr);
if (state->flags & CLEANUP_FLAG_MAP_OK) {
if (cleanup_rcpt_canon_maps
&& (cleanup_rcpt_canon_flags & CLEANUP_CANON_FLAG_ENV_RCPT))
cleanup_map11_internal(state, clean_addr, cleanup_rcpt_canon_maps,
cleanup_ext_prop_mask & EXT_PROP_CANONICAL);
if (cleanup_comm_canon_maps
&& (cleanup_comm_canon_flags & CLEANUP_CANON_FLAG_ENV_RCPT))
cleanup_map11_internal(state, clean_addr, cleanup_comm_canon_maps,
cleanup_ext_prop_mask & EXT_PROP_CANONICAL);
if (cleanup_masq_domains
&& (cleanup_masq_flags & CLEANUP_MASQ_FLAG_ENV_RCPT))
cleanup_masquerade_internal(state, clean_addr, cleanup_masq_domains);
}
/* Fix 20140711: Auto-detect an UTF8 recipient. */
if (var_smtputf8_enable && *STR(clean_addr) && !allascii(STR(clean_addr))
&& valid_utf8_stringz(STR(clean_addr))) {
/* Fix 20140713: request SMTPUTF8 support selectively. */
if (state->flags & CLEANUP_FLAG_AUTOUTF8)
state->smtputf8 |= SMTPUTF8_FLAG_REQUESTED;
}
/* Fix 20141024: Don't fake up a "bare" DSN original rcpt in smtp(8). */
if (state->dsn_orcpt == 0 && *STR(clean_addr) != 0)
state->dsn_orcpt = concatenate((!allascii(STR(clean_addr))
&& (state->smtputf8 & SMTPUTF8_FLAG_REQUESTED)) ?
"utf-8" : "rfc822", ";", STR(clean_addr), (char *) 0);
cleanup_out_recipient(state, state->dsn_orcpt, state->dsn_notify,
state->orig_rcpt, STR(clean_addr));
if (state->recip) /* This can happen */
myfree(state->recip);
state->recip = mystrdup(STR(clean_addr)); /* Used by Milter client */
if ((state->flags & CLEANUP_FLAG_BCC_OK)
&& *STR(clean_addr)
&& cleanup_rcpt_bcc_maps) {
if ((bcc = mail_addr_find_to_internal(cleanup_rcpt_bcc_maps,
STR(clean_addr),
IGNORE_EXTENSION)) != 0) {
cleanup_addr_bcc(state, bcc);
} else if (cleanup_rcpt_bcc_maps->error) {
msg_warn("%s: %s map lookup problem -- "
"message not accepted, try again later",
state->queue_id, cleanup_rcpt_bcc_maps->title);
state->errs |= CLEANUP_STAT_WRITE;
}
}
vstring_free(clean_addr);
}
/* cleanup_addr_bcc_dsn - process automatic BCC recipient */
void cleanup_addr_bcc_dsn(CLEANUP_STATE *state, const char *bcc,
const char *dsn_orcpt, int dsn_notify)
{
VSTRING *clean_addr = vstring_alloc(100);
/*
* Note: BCC addresses are supplied locally, and must be rewritten in the
* local address rewriting context.
*/
cleanup_rewrite_internal(MAIL_ATTR_RWR_LOCAL, clean_addr, bcc);
if (state->flags & CLEANUP_FLAG_MAP_OK) {
if (cleanup_rcpt_canon_maps
&& (cleanup_rcpt_canon_flags & CLEANUP_CANON_FLAG_ENV_RCPT))
cleanup_map11_internal(state, clean_addr, cleanup_rcpt_canon_maps,
cleanup_ext_prop_mask & EXT_PROP_CANONICAL);
if (cleanup_comm_canon_maps
&& (cleanup_comm_canon_flags & CLEANUP_CANON_FLAG_ENV_RCPT))
cleanup_map11_internal(state, clean_addr, cleanup_comm_canon_maps,
cleanup_ext_prop_mask & EXT_PROP_CANONICAL);
if (cleanup_masq_domains
&& (cleanup_masq_flags & CLEANUP_MASQ_FLAG_ENV_RCPT))
cleanup_masquerade_internal(state, clean_addr, cleanup_masq_domains);
}
/* Fix 20140711: Auto-detect an UTF8 recipient. */
if (var_smtputf8_enable && *STR(clean_addr) && !allascii(STR(clean_addr))
&& valid_utf8_stringz(STR(clean_addr))) {
/* Fix 20140713: request SMTPUTF8 support selectively. */
if (state->flags & CLEANUP_FLAG_AUTOUTF8)
state->smtputf8 |= SMTPUTF8_FLAG_REQUESTED;
}
cleanup_out_recipient(state, dsn_orcpt, dsn_notify,
STR(clean_addr), STR(clean_addr));
vstring_free(clean_addr);
}
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