Adding upstream version 1:4.8.1.upstream/1%4.8.1upstream

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

1 files changed, 116 insertions, 0 deletions

diff --git a/libmisc/log.c b/libmisc/log.c
new file mode 100644
index 0000000..eb84859
--- /dev/null
+++ b/libmisc/log.c
@@ -0,0 +1,116 @@
+/*
+ * Copyright (c) 1989 - 1994, Julianne Frances Haugh
+ * Copyright (c) 1996 - 1998, Marek Michałkiewicz
+ * Copyright (c) 2003 - 2005, Tomasz Kłoczko
+ * Copyright (c) 2008       , Nicolas François
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The name of the copyright holders or contributors may not be used to
+ *    endorse or promote products derived from this software without
+ *    specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
+ * PARTICULAR PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT
+ * HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <config.h>
+
+#ident "$Id$"
+
+#include <sys/types.h>
+#include <pwd.h>
+#include <fcntl.h>
+#include <time.h>
+#include "defines.h"
+#include <lastlog.h>
+#include "prototypes.h"
+
+/* 
+ * dolastlog - create lastlog entry
+ *
+ *	A "last login" entry is created for the user being logged in.  The
+ *	UID is extracted from the global (struct passwd) entry and the
+ *	TTY information is gotten from the (struct utmp).
+ */
+void dolastlog (
+	struct lastlog *ll,
+	const struct passwd *pw,
+	/*@unique@*/const char *line,
+	/*@unique@*/const char *host)
+{
+	int fd;
+	off_t offset;
+	struct lastlog newlog;
+	time_t ll_time;
+
+	/*
+	 * If the file does not exist, don't create it.
+	 */
+
+	fd = open (LASTLOG_FILE, O_RDWR);
+	if (-1 == fd) {
+		return;
+	}
+
+	/*
+	 * The file is indexed by UID number.  Seek to the record
+	 * for this UID.  Negative UID's will create problems, but ...
+	 */
+
+	offset = (off_t) pw->pw_uid * sizeof newlog;
+
+	if (lseek (fd, offset, SEEK_SET) != offset) {
+		SYSLOG ((LOG_WARN,
+		         "Can't read last lastlog entry for UID %lu in %s. Entry not updated.",
+		         (unsigned long) pw->pw_uid, LASTLOG_FILE));
+		(void) close (fd);
+		return;
+	}
+
+	/*
+	 * Read the old entry so we can tell the user when they last
+	 * logged in.  Then construct the new entry and write it out
+	 * the way we read the old one in.
+	 */
+
+	if (read (fd, (void *) &newlog, sizeof newlog) != (ssize_t) sizeof newlog) {
+		memzero (&newlog, sizeof newlog);
+	}
+	if (NULL != ll) {
+		*ll = newlog;
+	}
+
+	ll_time = newlog.ll_time;
+	(void) time (&ll_time);
+	newlog.ll_time = ll_time;
+	strncpy (newlog.ll_line, line, sizeof newlog.ll_line);
+#if HAVE_LL_HOST
+	strncpy (newlog.ll_host, host, sizeof newlog.ll_host);
+#endif
+	if (   (lseek (fd, offset, SEEK_SET) != offset)
+	    || (write (fd, (const void *) &newlog, sizeof newlog) != (ssize_t) sizeof newlog)
+	    || (close (fd) != 0)) {
+		SYSLOG ((LOG_WARN,
+		         "Can't write lastlog entry for UID %lu in %s.",
+		         (unsigned long) pw->pw_uid, LASTLOG_FILE));
+		(void) close (fd);
+	}
+}
+