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-rw-r--r--lib/shadowmem.c89
1 files changed, 89 insertions, 0 deletions
diff --git a/lib/shadowmem.c b/lib/shadowmem.c
new file mode 100644
index 0000000..8989598
--- /dev/null
+++ b/lib/shadowmem.c
@@ -0,0 +1,89 @@
+/*
+ * Copyright (c) 1990 - 1994, Julianne Frances Haugh
+ * Copyright (c) 1996 - 2000, Marek Michałkiewicz
+ * Copyright (c) 2001 , Michał Moskal
+ * Copyright (c) 2005 , Tomasz Kłoczko
+ * Copyright (c) 2007 - 2013, 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 "prototypes.h"
+#include "defines.h"
+#include <shadow.h>
+#include <stdio.h>
+#include "shadowio.h"
+
+/*@null@*/ /*@only@*/struct spwd *__spw_dup (const struct spwd *spent)
+{
+ struct spwd *sp;
+
+ sp = (struct spwd *) malloc (sizeof *sp);
+ if (NULL == sp) {
+ return NULL;
+ }
+ /* The libc might define other fields. They won't be copied. */
+ memset (sp, 0, sizeof *sp);
+ sp->sp_lstchg = spent->sp_lstchg;
+ sp->sp_min = spent->sp_min;
+ sp->sp_max = spent->sp_max;
+ sp->sp_warn = spent->sp_warn;
+ sp->sp_inact = spent->sp_inact;
+ sp->sp_expire = spent->sp_expire;
+ sp->sp_flag = spent->sp_flag;
+ /*@-mustfreeonly@*/
+ sp->sp_namp = strdup (spent->sp_namp);
+ /*@=mustfreeonly@*/
+ if (NULL == sp->sp_namp) {
+ free(sp);
+ return NULL;
+ }
+ /*@-mustfreeonly@*/
+ sp->sp_pwdp = strdup (spent->sp_pwdp);
+ /*@=mustfreeonly@*/
+ if (NULL == sp->sp_pwdp) {
+ free(sp->sp_namp);
+ free(sp);
+ return NULL;
+ }
+
+ return sp;
+}
+
+void spw_free (/*@out@*/ /*@only@*/struct spwd *spent)
+{
+ free (spent->sp_namp);
+ if (NULL != spent->sp_pwdp) {
+ memzero (spent->sp_pwdp, strlen (spent->sp_pwdp));
+ free (spent->sp_pwdp);
+ }
+ free (spent);
+}
+