Adding upstream version 3.4.23.upstream/3.4.23upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 479 insertions, 0 deletions

diff --git a/src/cleanup/cleanup_init.c b/src/cleanup/cleanup_init.c
new file mode 100644
index 0000000..e411992
--- /dev/null
+++ b/src/cleanup/cleanup_init.c
@@ -0,0 +1,479 @@
+/*++
+/* NAME
+/*	cleanup_init 3
+/* SUMMARY
+/*	cleanup callable interface, initializations
+/* SYNOPSIS
+/*	#include "cleanup.h"
+/*
+/*	CONFIG_INT_TABLE cleanup_int_table[];
+/*
+/*	CONFIG_BOOL_TABLE cleanup_bool_table[];
+/*
+/*	CONFIG_STR_TABLE cleanup_str_table[];
+/*
+/*	CONFIG_TIME_TABLE cleanup_time_table[];
+/*
+/*	void	cleanup_pre_jail(service_name, argv)
+/*	char	*service_name;
+/*	char	**argv;
+/*
+/*	void	cleanup_post_jail(service_name, argv)
+/*	char	*service_name;
+/*	char	**argv;
+/*
+/*	char	*cleanup_path;
+/*	VSTRING	*cleanup_trace_path;
+/*
+/*	void	cleanup_all()
+/*
+/*	void	cleanup_sig(sigval)
+/*	int	sigval;
+/* DESCRIPTION
+/*	This module implements a callable interface to the cleanup service
+/*	for one-time initializations that must be done before any message
+/*	processing can take place.
+/*
+/*	cleanup_{int,str,time}_table[] specify configuration
+/*	parameters that must be initialized before calling any functions
+/*	in this module. These tables satisfy the interface as specified in
+/*	single_service(3).
+/*
+/*	cleanup_pre_jail() and cleanup_post_jail() perform mandatory
+/*	initializations before and after the process enters the optional
+/*	chroot jail. These functions satisfy the interface as specified
+/*	in single_service(3).
+/*
+/*	cleanup_path is either a null pointer or it is the name of a queue
+/*	file that currently is being written. This information is used
+/*	by cleanup_all() to remove incomplete files after a fatal error,
+/*	or by cleanup_sig() after arrival of a SIGTERM signal.
+/*
+/*	cleanup_trace_path is either a null pointer or the pathname of a
+/*	trace logfile with DSN SUCCESS notifications. This information is
+/*	used to remove a trace file when the mail transaction is canceled.
+/*
+/*	cleanup_all() must be called in case of fatal error, in order
+/*	to remove an incomplete queue file.
+/*
+/*	cleanup_sig() must be called in case of SIGTERM, in order
+/*	to remove an incomplete queue file.
+/* DIAGNOSTICS
+/*	Problems and transactions are logged to \fBsyslogd\fR(8)
+/*	or \fBpostlogd\fR(8).
+/* SEE ALSO
+/*	cleanup_api(3) cleanup callable interface, message processing
+/* 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 <signal.h>
+#include <string.h>
+
+/* Utility library. */
+
+#include <msg.h>
+#include <iostuff.h>
+#include <name_code.h>
+#include <name_mask.h>
+#include <stringops.h>
+
+/* Global library. */
+
+#include <mail_addr.h>
+#include <mail_params.h>
+#include <mail_version.h>		/* milter_macro_v */
+#include <ext_prop.h>
+#include <flush_clnt.h>
+
+/* Application-specific. */
+
+#include "cleanup.h"
+
+ /*
+  * Global state: any queue files that we have open, so that the error
+  * handler can clean up in case of trouble.
+  */
+char   *cleanup_path;			/* queue file name */
+
+ /*
+  * Another piece of global state: pathnames of partial bounce or trace
+  * logfiles that need to be cleaned up when the cleanup request is aborted.
+  */
+VSTRING *cleanup_trace_path;
+
+ /*
+  * Tunable parameters.
+  */
+int     var_hopcount_limit;		/* max mailer hop count */
+char   *var_canonical_maps;		/* common canonical maps */
+char   *var_send_canon_maps;		/* sender canonical maps */
+char   *var_rcpt_canon_maps;		/* recipient canonical maps */
+char   *var_canon_classes;		/* what to canonicalize */
+char   *var_send_canon_classes;		/* what sender to canonicalize */
+char   *var_rcpt_canon_classes;		/* what recipient to canonicalize */
+char   *var_virt_alias_maps;		/* virtual alias maps */
+char   *var_masq_domains;		/* masquerade domains */
+char   *var_masq_exceptions;		/* users not masqueraded */
+char   *var_header_checks;		/* primary header checks */
+char   *var_mimehdr_checks;		/* mime header checks */
+char   *var_nesthdr_checks;		/* nested header checks */
+char   *var_body_checks;		/* any body checks */
+int     var_dup_filter_limit;		/* recipient dup filter */
+char   *var_empty_addr;			/* destination of bounced bounces */
+int     var_delay_warn_time;		/* delay that triggers warning */
+char   *var_prop_extension;		/* propagate unmatched extension */
+char   *var_always_bcc;			/* big brother */
+char   *var_rcpt_witheld;		/* recipients not disclosed */
+char   *var_masq_classes;		/* what to masquerade */
+int     var_qattr_count_limit;		/* named attribute limit */
+int     var_virt_recur_limit;		/* maximum virtual alias recursion */
+int     var_virt_expan_limit;		/* maximum virtual alias expansion */
+int     var_body_check_len;		/* when to stop body scan */
+char   *var_send_bcc_maps;		/* sender auto-bcc maps */
+char   *var_rcpt_bcc_maps;		/* recipient auto-bcc maps */
+char   *var_remote_rwr_domain;		/* header-only surrogate */
+char   *var_msg_reject_chars;		/* reject these characters */
+char   *var_msg_strip_chars;		/* strip these characters */
+int     var_verp_bounce_off;		/* don't verp the bounces */
+int     var_milt_conn_time;		/* milter connect/handshake timeout */
+int     var_milt_cmd_time;		/* milter command timeout */
+int     var_milt_msg_time;		/* milter content timeout */
+char   *var_milt_protocol;		/* Sendmail 8 milter protocol */
+char   *var_milt_def_action;		/* default milter action */
+char   *var_milt_daemon_name;		/* {daemon_name} macro value */
+char   *var_milt_v;			/* {v} macro value */
+char   *var_milt_conn_macros;		/* connect macros */
+char   *var_milt_helo_macros;		/* HELO macros */
+char   *var_milt_mail_macros;		/* MAIL FROM macros */
+char   *var_milt_rcpt_macros;		/* RCPT TO macros */
+char   *var_milt_data_macros;		/* DATA macros */
+char   *var_milt_eoh_macros;		/* end-of-header macros */
+char   *var_milt_eod_macros;		/* end-of-data macros */
+char   *var_milt_unk_macros;		/* unknown command macros */
+char   *var_cleanup_milters;		/* non-SMTP mail */
+char   *var_milt_head_checks;		/* post-Milter header checks */
+char   *var_milt_macro_deflts;		/* default macro settings */
+int     var_auto_8bit_enc_hdr;		/* auto-detect 8bit encoding header */
+int     var_always_add_hdrs;		/* always add missing headers */
+int     var_virt_addrlen_limit;		/* stop exponential growth */
+char   *var_hfrom_format;		/* header_from_format */
+
+const CONFIG_INT_TABLE cleanup_int_table[] = {
+    VAR_HOPCOUNT_LIMIT, DEF_HOPCOUNT_LIMIT, &var_hopcount_limit, 1, 0,
+    VAR_DUP_FILTER_LIMIT, DEF_DUP_FILTER_LIMIT, &var_dup_filter_limit, 0, 0,
+    VAR_QATTR_COUNT_LIMIT, DEF_QATTR_COUNT_LIMIT, &var_qattr_count_limit, 1, 0,
+    VAR_VIRT_RECUR_LIMIT, DEF_VIRT_RECUR_LIMIT, &var_virt_recur_limit, 1, 0,
+    VAR_VIRT_EXPAN_LIMIT, DEF_VIRT_EXPAN_LIMIT, &var_virt_expan_limit, 1, 0,
+    VAR_VIRT_ADDRLEN_LIMIT, DEF_VIRT_ADDRLEN_LIMIT, &var_virt_addrlen_limit, 1, 0,
+    VAR_BODY_CHECK_LEN, DEF_BODY_CHECK_LEN, &var_body_check_len, 0, 0,
+    0,
+};
+
+const CONFIG_BOOL_TABLE cleanup_bool_table[] = {
+    VAR_VERP_BOUNCE_OFF, DEF_VERP_BOUNCE_OFF, &var_verp_bounce_off,
+    VAR_AUTO_8BIT_ENC_HDR, DEF_AUTO_8BIT_ENC_HDR, &var_auto_8bit_enc_hdr,
+    VAR_ALWAYS_ADD_HDRS, DEF_ALWAYS_ADD_HDRS, &var_always_add_hdrs,
+    0,
+};
+
+const CONFIG_TIME_TABLE cleanup_time_table[] = {
+    VAR_DELAY_WARN_TIME, DEF_DELAY_WARN_TIME, &var_delay_warn_time, 0, 0,
+    VAR_MILT_CONN_TIME, DEF_MILT_CONN_TIME, &var_milt_conn_time, 1, 0,
+    VAR_MILT_CMD_TIME, DEF_MILT_CMD_TIME, &var_milt_cmd_time, 1, 0,
+    VAR_MILT_MSG_TIME, DEF_MILT_MSG_TIME, &var_milt_msg_time, 1, 0,
+    0,
+};
+
+const CONFIG_STR_TABLE cleanup_str_table[] = {
+    VAR_CANONICAL_MAPS, DEF_CANONICAL_MAPS, &var_canonical_maps, 0, 0,
+    VAR_SEND_CANON_MAPS, DEF_SEND_CANON_MAPS, &var_send_canon_maps, 0, 0,
+    VAR_RCPT_CANON_MAPS, DEF_RCPT_CANON_MAPS, &var_rcpt_canon_maps, 0, 0,
+    VAR_CANON_CLASSES, DEF_CANON_CLASSES, &var_canon_classes, 1, 0,
+    VAR_SEND_CANON_CLASSES, DEF_SEND_CANON_CLASSES, &var_send_canon_classes, 1, 0,
+    VAR_RCPT_CANON_CLASSES, DEF_RCPT_CANON_CLASSES, &var_rcpt_canon_classes, 1, 0,
+    VAR_VIRT_ALIAS_MAPS, DEF_VIRT_ALIAS_MAPS, &var_virt_alias_maps, 0, 0,
+    VAR_MASQ_DOMAINS, DEF_MASQ_DOMAINS, &var_masq_domains, 0, 0,
+    VAR_EMPTY_ADDR, DEF_EMPTY_ADDR, &var_empty_addr, 1, 0,
+    VAR_MASQ_EXCEPTIONS, DEF_MASQ_EXCEPTIONS, &var_masq_exceptions, 0, 0,
+    VAR_HEADER_CHECKS, DEF_HEADER_CHECKS, &var_header_checks, 0, 0,
+    VAR_MIMEHDR_CHECKS, DEF_MIMEHDR_CHECKS, &var_mimehdr_checks, 0, 0,
+    VAR_NESTHDR_CHECKS, DEF_NESTHDR_CHECKS, &var_nesthdr_checks, 0, 0,
+    VAR_BODY_CHECKS, DEF_BODY_CHECKS, &var_body_checks, 0, 0,
+    VAR_PROP_EXTENSION, DEF_PROP_EXTENSION, &var_prop_extension, 0, 0,
+    VAR_ALWAYS_BCC, DEF_ALWAYS_BCC, &var_always_bcc, 0, 0,
+    VAR_RCPT_WITHELD, DEF_RCPT_WITHELD, &var_rcpt_witheld, 0, 0,
+    VAR_MASQ_CLASSES, DEF_MASQ_CLASSES, &var_masq_classes, 0, 0,
+    VAR_SEND_BCC_MAPS, DEF_SEND_BCC_MAPS, &var_send_bcc_maps, 0, 0,
+    VAR_RCPT_BCC_MAPS, DEF_RCPT_BCC_MAPS, &var_rcpt_bcc_maps, 0, 0,
+    VAR_REM_RWR_DOMAIN, DEF_REM_RWR_DOMAIN, &var_remote_rwr_domain, 0, 0,
+    VAR_MSG_REJECT_CHARS, DEF_MSG_REJECT_CHARS, &var_msg_reject_chars, 0, 0,
+    VAR_MSG_STRIP_CHARS, DEF_MSG_STRIP_CHARS, &var_msg_strip_chars, 0, 0,
+    VAR_MILT_PROTOCOL, DEF_MILT_PROTOCOL, &var_milt_protocol, 1, 0,
+    VAR_MILT_DEF_ACTION, DEF_MILT_DEF_ACTION, &var_milt_def_action, 1, 0,
+    VAR_MILT_DAEMON_NAME, DEF_MILT_DAEMON_NAME, &var_milt_daemon_name, 1, 0,
+    VAR_MILT_V, DEF_MILT_V, &var_milt_v, 1, 0,
+    VAR_MILT_CONN_MACROS, DEF_MILT_CONN_MACROS, &var_milt_conn_macros, 0, 0,
+    VAR_MILT_HELO_MACROS, DEF_MILT_HELO_MACROS, &var_milt_helo_macros, 0, 0,
+    VAR_MILT_MAIL_MACROS, DEF_MILT_MAIL_MACROS, &var_milt_mail_macros, 0, 0,
+    VAR_MILT_RCPT_MACROS, DEF_MILT_RCPT_MACROS, &var_milt_rcpt_macros, 0, 0,
+    VAR_MILT_DATA_MACROS, DEF_MILT_DATA_MACROS, &var_milt_data_macros, 0, 0,
+    VAR_MILT_EOH_MACROS, DEF_MILT_EOH_MACROS, &var_milt_eoh_macros, 0, 0,
+    VAR_MILT_EOD_MACROS, DEF_MILT_EOD_MACROS, &var_milt_eod_macros, 0, 0,
+    VAR_MILT_UNK_MACROS, DEF_MILT_UNK_MACROS, &var_milt_unk_macros, 0, 0,
+    VAR_CLEANUP_MILTERS, DEF_CLEANUP_MILTERS, &var_cleanup_milters, 0, 0,
+    VAR_MILT_HEAD_CHECKS, DEF_MILT_HEAD_CHECKS, &var_milt_head_checks, 0, 0,
+    VAR_MILT_MACRO_DEFLTS, DEF_MILT_MACRO_DEFLTS, &var_milt_macro_deflts, 0, 0,
+    VAR_HFROM_FORMAT, DEF_HFROM_FORMAT, &var_hfrom_format, 1, 0,
+    0,
+};
+
+ /*
+  * Mappings.
+  */
+MAPS   *cleanup_comm_canon_maps;
+MAPS   *cleanup_send_canon_maps;
+MAPS   *cleanup_rcpt_canon_maps;
+int     cleanup_comm_canon_flags;
+int     cleanup_send_canon_flags;
+int     cleanup_rcpt_canon_flags;
+MAPS   *cleanup_header_checks;
+MAPS   *cleanup_mimehdr_checks;
+MAPS   *cleanup_nesthdr_checks;
+MAPS   *cleanup_body_checks;
+MAPS   *cleanup_virt_alias_maps;
+ARGV   *cleanup_masq_domains;
+STRING_LIST *cleanup_masq_exceptions;
+int     cleanup_masq_flags;
+MAPS   *cleanup_send_bcc_maps;
+MAPS   *cleanup_rcpt_bcc_maps;
+
+ /*
+  * Character filters.
+  */
+VSTRING *cleanup_reject_chars;
+VSTRING *cleanup_strip_chars;
+
+ /*
+  * Address extension propagation restrictions.
+  */
+int     cleanup_ext_prop_mask;
+
+ /*
+  * Milter support.
+  */
+MILTERS *cleanup_milters;
+
+ /*
+  * From: header format.
+  */
+int     hfrom_format_code;
+
+/* cleanup_all - callback for the runtime error handler */
+
+void    cleanup_all(void)
+{
+    cleanup_sig(0);
+}
+
+/* cleanup_sig - callback for the SIGTERM handler */
+
+void    cleanup_sig(int sig)
+{
+
+    /*
+     * msg_fatal() is safe against calling itself recursively, but signals
+     * need extra safety.
+     * 
+     * XXX While running as a signal handler, can't ask the memory manager to
+     * release VSTRING storage.
+     */
+    if (signal(SIGTERM, SIG_IGN) != SIG_IGN) {
+	if (cleanup_trace_path) {
+	    (void) REMOVE(vstring_str(cleanup_trace_path));
+	    cleanup_trace_path = 0;
+	}
+	if (cleanup_path) {
+	    (void) REMOVE(cleanup_path);
+	    cleanup_path = 0;
+	}
+	if (sig)
+	    _exit(sig);
+    }
+}
+
+/* cleanup_pre_jail - initialize before entering the chroot jail */
+
+void    cleanup_pre_jail(char *unused_name, char **unused_argv)
+{
+    static const NAME_MASK send_canon_class_table[] = {
+	CANON_CLASS_ENV_FROM, CLEANUP_CANON_FLAG_ENV_FROM,
+	CANON_CLASS_HDR_FROM, CLEANUP_CANON_FLAG_HDR_FROM,
+	0,
+    };
+    static const NAME_MASK rcpt_canon_class_table[] = {
+	CANON_CLASS_ENV_RCPT, CLEANUP_CANON_FLAG_ENV_RCPT,
+	CANON_CLASS_HDR_RCPT, CLEANUP_CANON_FLAG_HDR_RCPT,
+	0,
+    };
+    static const NAME_MASK canon_class_table[] = {
+	CANON_CLASS_ENV_FROM, CLEANUP_CANON_FLAG_ENV_FROM,
+	CANON_CLASS_ENV_RCPT, CLEANUP_CANON_FLAG_ENV_RCPT,
+	CANON_CLASS_HDR_FROM, CLEANUP_CANON_FLAG_HDR_FROM,
+	CANON_CLASS_HDR_RCPT, CLEANUP_CANON_FLAG_HDR_RCPT,
+	0,
+    };
+    static const NAME_MASK masq_class_table[] = {
+	MASQ_CLASS_ENV_FROM, CLEANUP_MASQ_FLAG_ENV_FROM,
+	MASQ_CLASS_ENV_RCPT, CLEANUP_MASQ_FLAG_ENV_RCPT,
+	MASQ_CLASS_HDR_FROM, CLEANUP_MASQ_FLAG_HDR_FROM,
+	MASQ_CLASS_HDR_RCPT, CLEANUP_MASQ_FLAG_HDR_RCPT,
+	0,
+    };
+
+    if (*var_canonical_maps)
+	cleanup_comm_canon_maps =
+	    maps_create(VAR_CANONICAL_MAPS, var_canonical_maps,
+			DICT_FLAG_LOCK | DICT_FLAG_FOLD_FIX
+			| DICT_FLAG_UTF8_REQUEST);
+    if (*var_send_canon_maps)
+	cleanup_send_canon_maps =
+	    maps_create(VAR_SEND_CANON_MAPS, var_send_canon_maps,
+			DICT_FLAG_LOCK | DICT_FLAG_FOLD_FIX
+			| DICT_FLAG_UTF8_REQUEST);
+    if (*var_rcpt_canon_maps)
+	cleanup_rcpt_canon_maps =
+	    maps_create(VAR_RCPT_CANON_MAPS, var_rcpt_canon_maps,
+			DICT_FLAG_LOCK | DICT_FLAG_FOLD_FIX
+			| DICT_FLAG_UTF8_REQUEST);
+    if (*var_virt_alias_maps)
+	cleanup_virt_alias_maps = maps_create(VAR_VIRT_ALIAS_MAPS,
+					      var_virt_alias_maps,
+					      DICT_FLAG_LOCK
+					      | DICT_FLAG_FOLD_FIX
+					      | DICT_FLAG_UTF8_REQUEST);
+    if (*var_canon_classes)
+	cleanup_comm_canon_flags =
+	    name_mask(VAR_CANON_CLASSES, canon_class_table,
+		      var_canon_classes);
+    if (*var_send_canon_classes)
+	cleanup_send_canon_flags =
+	    name_mask(VAR_CANON_CLASSES, send_canon_class_table,
+		      var_send_canon_classes);
+    if (*var_rcpt_canon_classes)
+	cleanup_rcpt_canon_flags =
+	    name_mask(VAR_CANON_CLASSES, rcpt_canon_class_table,
+		      var_rcpt_canon_classes);
+    if (*var_masq_domains)
+	cleanup_masq_domains = argv_split(var_masq_domains, CHARS_COMMA_SP);
+    if (*var_header_checks)
+	cleanup_header_checks =
+	    maps_create(VAR_HEADER_CHECKS, var_header_checks, DICT_FLAG_LOCK);
+    if (*var_mimehdr_checks)
+	cleanup_mimehdr_checks =
+	    maps_create(VAR_MIMEHDR_CHECKS, var_mimehdr_checks, DICT_FLAG_LOCK);
+    if (*var_nesthdr_checks)
+	cleanup_nesthdr_checks =
+	    maps_create(VAR_NESTHDR_CHECKS, var_nesthdr_checks, DICT_FLAG_LOCK);
+    if (*var_body_checks)
+	cleanup_body_checks =
+	    maps_create(VAR_BODY_CHECKS, var_body_checks, DICT_FLAG_LOCK);
+    if (*var_masq_exceptions)
+	cleanup_masq_exceptions =
+	    string_list_init(VAR_MASQ_EXCEPTIONS, MATCH_FLAG_RETURN,
+			     var_masq_exceptions);
+    if (*var_masq_classes)
+	cleanup_masq_flags = name_mask(VAR_MASQ_CLASSES, masq_class_table,
+				       var_masq_classes);
+    if (*var_send_bcc_maps)
+	cleanup_send_bcc_maps =
+	    maps_create(VAR_SEND_BCC_MAPS, var_send_bcc_maps,
+			DICT_FLAG_LOCK | DICT_FLAG_FOLD_FIX
+			| DICT_FLAG_UTF8_REQUEST);
+    if (*var_rcpt_bcc_maps)
+	cleanup_rcpt_bcc_maps =
+	    maps_create(VAR_RCPT_BCC_MAPS, var_rcpt_bcc_maps,
+			DICT_FLAG_LOCK | DICT_FLAG_FOLD_FIX
+			| DICT_FLAG_UTF8_REQUEST);
+    if (*var_cleanup_milters)
+	cleanup_milters = milter_create(var_cleanup_milters,
+					var_milt_conn_time,
+					var_milt_cmd_time,
+					var_milt_msg_time,
+					var_milt_protocol,
+					var_milt_def_action,
+					var_milt_conn_macros,
+					var_milt_helo_macros,
+					var_milt_mail_macros,
+					var_milt_rcpt_macros,
+					var_milt_data_macros,
+					var_milt_eoh_macros,
+					var_milt_eod_macros,
+					var_milt_unk_macros,
+					var_milt_macro_deflts);
+
+    flush_init();
+}
+
+/* cleanup_post_jail - initialize after entering the chroot jail */
+
+void    cleanup_post_jail(char *unused_name, char **unused_argv)
+{
+    static const NAME_CODE hfrom_format_table[] = {
+	HFROM_FORMAT_NAME_STD, HFROM_FORMAT_CODE_STD,
+	HFROM_FORMAT_NAME_OBS, HFROM_FORMAT_CODE_OBS,
+	0, -1,
+    };
+
+    /*
+     * Optionally set the file size resource limit. XXX This limits the
+     * message content to somewhat less than requested, because the total
+     * queue file size also includes envelope information. Unless people set
+     * really low limit, the difference is going to matter only when a queue
+     * file has lots of recipients.
+     */
+    if (var_message_limit > 0)
+	set_file_limit((off_t) var_message_limit);
+
+    /*
+     * Control how unmatched extensions are propagated.
+     */
+    cleanup_ext_prop_mask =
+	ext_prop_mask(VAR_PROP_EXTENSION, var_prop_extension);
+
+    /*
+     * Setup the filters for characters that should be rejected, and for
+     * characters that should be removed.
+     */
+    if (*var_msg_reject_chars) {
+	cleanup_reject_chars = vstring_alloc(strlen(var_msg_reject_chars));
+	unescape(cleanup_reject_chars, var_msg_reject_chars);
+    }
+    if (*var_msg_strip_chars) {
+	cleanup_strip_chars = vstring_alloc(strlen(var_msg_strip_chars));
+	unescape(cleanup_strip_chars, var_msg_strip_chars);
+    }
+
+    /*
+     * From: header formatting.
+     */
+    if ((hfrom_format_code = name_code(hfrom_format_table,
+				NAME_CODE_FLAG_NONE, var_hfrom_format)) < 0)
+	msg_fatal("invalid setting: %s = %s",
+		  VAR_HFROM_FORMAT, var_hfrom_format);
+}