[svn-upgrade] Integrating new upstream version, shadow (19990709)

libmisc/hushed.c

@@ -0,0 +1,90 @@
+/*
+ * Copyright 1991, 1993, Julianne Frances Haugh and Chip Rosenthal
+ * 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. Neither the name of Julianne F. Haugh nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY JULIE HAUGH 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 JULIE HAUGH 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>
+
+#include "rcsid.h"
+RCSID("$Id: hushed.c,v 1.3 1997/12/07 23:27:05 marekm Exp $")
+
+#include <sys/types.h>
+#include <stdio.h>
+#include "defines.h"
+#include "prototypes.h"
+#include "getdef.h"
+#include <pwd.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.
+ */
+
+int
+hushed(const struct passwd *pw)
+{
+	char *hushfile;
+	char buf[BUFSIZ];
+	int found;
+	FILE *fp;
+
+	/*
+	 * Get the name of the file to use.  If this option is not
+	 * defined, default to a noisy login.
+	 */
+
+	if ( (hushfile=getdef_str("HUSHLOGIN_FILE")) == NULL )
+		return 0;
+
+	/*
+	 * If this is not a fully rooted path then see if the
+	 * file exists in the user's home directory.
+	 */
+
+	if (hushfile[0] != '/') {
+		strcat(strcat(strcpy(buf, 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 is in there.
+	 */
+
+	if ((fp = fopen(hushfile, "r")) == NULL)
+		return 0;
+
+	for (found = 0;! found && fgets (buf, sizeof buf, fp);) {
+		buf[strlen (buf) - 1] = '\0';
+		found = ! strcmp (buf,
+			buf[0] == '/' ? pw->pw_shell:pw->pw_name);
+	}
+	(void) fclose(fp);
+	return found;
+}