1 files changed, 100 insertions, 0 deletions
diff --git a/libmisc/hushed.c b/libmisc/hushed.c
new file mode 100644
index 0000000..b71b99c
--- /dev/null
+++ b/libmisc/hushed.c
@@ -0,0 +1,100 @@
+/*
+ * Copyright (c) 1991 - 1993, Julianne Frances Haugh
+ * Copyright (c) 1991 - 1993, Chip Rosenthal
+ * Copyright (c) 1996 - 2000, Marek Michałkiewicz
+ * Copyright (c) 2003 - 2005, Tomasz Kłoczko
+ * Copyright (c) 2008 - 2010, 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 <stdio.h>
+#include <pwd.h>
+#include "defines.h"
+#include "prototypes.h"
+#include "getdef.h"
+/*
+ * hushed - determine if a user receives login messages
+ *
+ * Look in the hushed-logins file (or user's home directory) to see
+ * if the user is to receive the login-time messages.
+ */
+bool hushed (const char *username)
+{
+	struct passwd *pw;
+	const char *hushfile;
+	char buf[BUFSIZ];
+	bool found;
+	FILE *fp;
+
+	/*
+	 * Get the name of the file to use.  If this option is not
+	 * defined, default to a noisy login.
+	 */
+
+	hushfile = getdef_str ("HUSHLOGIN_FILE");
+	if (NULL == hushfile) {
+		return false;
+	}
+
+	pw = getpwnam (username);
+	if (NULL == pw) {
+		return false;
+	}
+
+	/*
+	 * If this is not a fully rooted path then see if the
+	 * file exists in the user's home directory.
+	 */
+
+	if (hushfile[0] != '/') {
+		(void) snprintf (buf, sizeof (buf), "%s/%s", pw->pw_dir, hushfile);
+		return (access (buf, F_OK) == 0);
+	}
+
+	/*
+	 * If this is a fully rooted path then go through the file
+	 * and see if this user, or its shell is in there.
+	 */
+
+	fp = fopen (hushfile, "r");
+	if (NULL == fp) {
+		return false;
+	}
+	for (found = false; !found && (fgets (buf, (int) sizeof buf, fp) == buf);) {
+		buf[strlen (buf) - 1] = '\0';
+		found = (strcmp (buf, pw->pw_shell) == 0) ||
+		        (strcmp (buf, pw->pw_name) == 0);
+	}
+	(void) fclose (fp);
+	return found;
+}
+