OpenSolaris Launch

1 files changed, 118 insertions, 0 deletions

diff --git a/usr/src/lib/libmail/common/notifyu.c b/usr/src/lib/libmail/common/notifyu.c
new file mode 100644
index 0000000000..5158839ce3
--- /dev/null
+++ b/usr/src/lib/libmail/common/notifyu.c
@@ -0,0 +1,118 @@
+/*
+ * CDDL HEADER START
+ *
+ * The contents of this file are subject to the terms of the
+ * Common Development and Distribution License, Version 1.0 only
+ * (the "License").  You may not use this file except in compliance
+ * with the License.
+ *
+ * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
+ * or http://www.opensolaris.org/os/licensing.
+ * See the License for the specific language governing permissions
+ * and limitations under the License.
+ *
+ * When distributing Covered Code, include this CDDL HEADER in each
+ * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
+ * If applicable, add the following below this CDDL HEADER, with the
+ * fields enclosed by brackets "[]" replaced with your own identifying
+ * information: Portions Copyright [yyyy] [name of copyright owner]
+ *
+ * CDDL HEADER END
+ */
+/*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
+/*	  All Rights Reserved  	*/
+
+
+/*
+ * Copyright (c) 1998-1999 by Sun Microsystems, Inc.
+ * All rights reserved.
+ */
+#pragma ident	"%Z%%M%	%I%	%E% SMI" 	/* SVr4.0 1.4	*/
+/*LINTLIBRARY*/
+
+#include "synonyms.h"
+#include "libmail.h"
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <fcntl.h>
+#include <utmpx.h>
+#include <syslog.h>
+#if !defined(__cplusplus) && !defined(c_plusplus)
+typedef void (*SIG_PF) (int);
+#endif
+#include <unistd.h>
+#include <signal.h>
+
+static SIG_PF catcher(void);
+
+static SIG_PF catcher(void)
+{
+	/* do nothing, but allow the write() to break */
+	return (0);
+}
+
+void
+notify(char *user, char *msg, int check_mesg_y, char *etcdir)
+{
+	/* search the utmp file for this user */
+	SIG_PF old;
+	unsigned int oldalarm;
+	struct utmpx utmpx, *putmpx = &utmpx;
+
+	setutxent();
+
+	/* grab the tty name */
+	while ((putmpx = getutxent()) != NULL) {
+		if (strncmp(user, utmpx.ut_name,
+		    sizeof (utmpx.ut_name)) == 0) {
+			char tty[sizeof (utmpx.ut_line)+1];
+			char dev[MAXFILENAME];
+			FILE *port;
+			size_t i;
+			int fd;
+
+			for (i = 0; i < sizeof (utmpx.ut_line); i++)
+				tty[i] = utmpx.ut_line[i];
+			tty[i] = '\0';
+
+			/* stick /dev/ in front */
+			(void) sprintf(dev, "%s/dev/%s", etcdir, tty);
+
+			/* break out if write() to the tty hangs */
+			old = (SIG_PF)signal(SIGALRM, (SIG_PF)catcher);
+			oldalarm = alarm(300);
+
+			/* check if device is really a tty */
+			if ((fd = open(dev, O_WRONLY|O_NOCTTY)) == -1) {
+				(void) fprintf(stderr,
+				    "Cannot open %s.\n", dev);
+				continue;
+			} else {
+				if (!isatty(fd)) {
+					(void) fprintf(stderr, "%s in utmpx is "
+					    "not a tty\n", tty);
+					openlog("mail", 0, LOG_AUTH);
+					syslog(LOG_CRIT, "%s in utmp is "
+					    "not a tty\n", tty);
+					closelog();
+					(void) close(fd);
+					continue;
+				}
+			}
+			(void) close(fd);
+
+			/* write to the tty */
+			port = fopen(dev, "w");
+			if (port != 0) {
+				(void) fprintf(port, "\r\n%s\r\n", msg);
+				(void) fclose(port);
+			}
+
+			/* clean up our alarm */
+			(void) alarm(0);
+			(void) signal(SIGALRM, old);
+			(void) alarm(oldalarm);
+		}
+	}
+	endutxent();
+}