added.

+/* GNU mailutils - a suite of utilities for electronic mail
+   Copyright (C) 1999, 2000, 2001 Free Software Foundation, Inc.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2, or (at your option)
+   any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+
+#include <sys/types.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+#include <limits.h>
+
+#include <mailutils/mailbox.h>
+#include <mailutils/header.h>
+#include <mailutils/filter.h>
+#include <mailutils/registrar.h>
+
+void message_display_parts(message_t msg, char *indent);
+
+char from[256];
+char subject[256];
+
+int
+main(int argc, char **argv)
+{
+	mailbox_t mbox = NULL;
+	int ret;
+	size_t i;
+	size_t count = 0;
+	char *mailbox_name = NULL;
+
+	/* have an argument */
+	if (argc > 1)
+		mailbox_name = argv[1];
+
+	/* Registration.  */
+  	{
+		list_t bookie;
+		registrar_get_list (&bookie);
+		list_append (bookie, mbox_record);
+		list_append (bookie, path_record);
+		list_append (bookie, pop_record);
+		list_append (bookie, imap_record);
+	}
+
+	if ( ( ret = mailbox_create_default (&mbox, mailbox_name) ) != 0) {
+		fprintf (stderr, "could not create - %s\n", strerror(ret));
+		exit (2);
+	}
+
+	/* Debuging Trace.  */
+	if ( 0 ) {
+		mu_debug_t debug;
+		mailbox_get_debug (mbox, &debug);
+		mu_debug_set_level (debug, MU_DEBUG_TRACE|MU_DEBUG_PROT);
+	}
+
+	/* Open the mailbox for reading only.  */
+	if ( ( ret = mailbox_open (mbox, MU_STREAM_RDWR) ) != 0) {
+		fprintf (stderr, "could not open - %s\n", strerror(ret));
+		exit (2);
+	}
+
+	/* Iterator through the entire message set.  */
+	mailbox_messages_count (mbox, &count);
+	for(i = 1; i <= count; ++i) {
+		message_t msg;
+		header_t hdr;
+		size_t nparts;
+		size_t msize;
+
+		if (( ret = mailbox_get_message (mbox, i, &msg) ) != 0) {
+			fprintf (stderr, "mailbox_get_message - %s\n", strerror(ret));
+			exit(2);
+		}
+		if (( ret = message_size (msg, &msize) ) != 0) {
+			fprintf (stderr, "message_size - %s\n", strerror(ret));
+			exit(2);
+		}
+		if (( ret = message_get_header (msg, &hdr) ) != 0) {
+			fprintf (stderr, "message_get_header - %s\n", strerror(ret));
+			exit(2);
+		}
+		header_get_value (hdr, MU_HEADER_FROM, from, sizeof (from), NULL);
+		header_get_value (hdr, MU_HEADER_SUBJECT, subject, sizeof (subject), NULL);
+		printf("From: %s\tSubject: %s\n", from, subject);
+		if ( ( ret = message_get_num_parts(msg, &nparts) ) != 0 ) {
+			fprintf (stderr, "message_get_num_parts - %s\n", strerror(ret));
+			exit(2);
+		}
+		printf("-- Number of parts in message - %d\n",nparts);
+		printf("-- Total message size - %d\n",msize);
+		message_display_parts(msg, "\t");
+	}
+	mailbox_close(mbox);
+	mailbox_destroy(&mbox);
+	return 0;
+}
+
+char buf[2048];
+
+void
+message_display_parts(message_t msg, char *indent)
+{
+	int ret, j;
+	size_t msize, nparts, nsubparts;
+	message_t part;
+	header_t hdr;
+	char type[256];
+	char encoding[256];
+	stream_t str;
+	body_t body;
+	int offset, ismulti;
+	size_t nbytes;
+
+	/* How many part those the message has?  */
+	if ( ( ret = message_get_num_parts(msg, &nparts) ) != 0 ) {
+		fprintf (stderr, "message_get_num_parts - %s\n", strerror(ret));
+		exit(2);
+	}
+
+	/* Iterate through all the parts.
+	   Treat type "message/rfc822" differently, since it is a message of is own
+	   that can have other subparts(recursive).  */
+	for( j = 1; j <= nparts; j++) {
+		if (( ret = message_get_part(msg, j, &part ) ) != 0 ) {
+			fprintf (stderr, "mime_get_part - %s\n", strerror(ret));
+			exit(2);
+		}
+		if (( ret = message_size (part, &msize) ) != 0) {
+			fprintf (stderr, "message_size - %s\n", strerror(ret));
+			exit(2);
+		}
+		if (( ret = message_get_header (part, &hdr) ) != 0) {
+			fprintf (stderr, "message_get_header - %s\n", strerror(ret));
+			exit(2);
+		}
+		header_get_value (hdr, MU_HEADER_CONTENT_TYPE, type, sizeof (type), NULL);
+		printf("%sType of part %d = %s\n", indent, j, type);
+		printf("%sMessage part size - %d\n",indent, msize);
+		encoding[0] = '\0';
+		header_get_value (hdr, MU_HEADER_CONTENT_TRANSFER_ENCODING, encoding, sizeof (encoding), NULL);
+		ismulti = 0;
+		if ( (type[0] && strncasecmp( type, "message/rfc822", strlen(type)) == 0 ) ||
+			 ( message_is_multipart (part, &ismulti) == 0 && ismulti ) ) {
+			char tmp[10];
+
+			if ( !ismulti ) {
+				ret = message_unencapsulate(part, &part, NULL);
+				if (ret != 0)
+				  fprintf (stderr, "message_unencapsulate - %s\n", strerror(ret));
+				break;
+			}
+			if (( ret = message_get_header (part, &hdr) ) != 0) {
+				fprintf (stderr, "message_get_header - %s\n", strerror(ret));
+				exit(2);
+			}
+			header_get_value (hdr, MU_HEADER_FROM, from, sizeof (from), NULL);
+			header_get_value (hdr, MU_HEADER_SUBJECT, subject, sizeof (subject), NULL);
+			printf("%sEncapsulated message : %s\t%s\n", indent, from, subject);
+			printf("%s-------------------------------------------------------------------\n", indent);
+			if ( ( ret = message_get_num_parts(part, &nsubparts) ) != 0 ) {
+			  fprintf (stderr, "mime_get_num_parts - %s\n", strerror(ret));
+				exit(2);
+			}
+			strcpy(tmp, indent);
+			strcat(tmp,"\t");
+			message_display_parts(part, tmp);
+			message_destroy (&part, NULL);
+		}
+		else if ( type[0] == '\0' || (strncasecmp( type, "text/plain", strlen("text/plain")) == 0) || (strncasecmp( type, "text/html", strlen("text/html")) == 0)) {
+			printf("%sText Message\n",indent);
+			printf("%s-------------------------------------------------------------------\n", indent);
+			message_get_body(part, &body);
+			body_get_stream(body, &str);
+			filter_create(&str, str, encoding, 0, 0);
+			offset = 0;
+			while( stream_readline( str, buf, sizeof(buf), offset, &nbytes ) == 0 && nbytes ) {
+				printf("%s%s", indent, buf);
+				offset += nbytes;
+			}
+			stream_destroy(&str, NULL);
+		}
+		else {
+#if 1
+	
+			/* Save the attachements.  */
+			char *fname;
+			message_attachment_filename( part, &fname);
+			if ( fname == NULL ) {
+				char buffer[PATH_MAX+1];
+				fname = tempnam(getcwd(buffer, PATH_MAX), "msg-" );
+			}
+			printf("%sAttachment - saving [%s]\n",indent, fname);
+			printf("%s-------------------------------------------------------------------\n", indent);
+			/* FIXME:  Somethings is not quite correct with this function.
+			  Please fix.  */
+			message_save_attachment(part, fname, NULL);
+			free(fname);
+#endif
+		}
+		printf("\n%s End -------------------------------------------------------------------\n", indent);
+	}
+}