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-rw-r--r--lib/pwmem.c85
1 files changed, 85 insertions, 0 deletions
diff --git a/lib/pwmem.c b/lib/pwmem.c
new file mode 100644
index 0000000..867e3f7
--- /dev/null
+++ b/lib/pwmem.c
@@ -0,0 +1,85 @@
+/*
+ * SPDX-FileCopyrightText: 1990 - 1994, Julianne Frances Haugh
+ * SPDX-FileCopyrightText: 1996 - 2000, Marek Michałkiewicz
+ * SPDX-FileCopyrightText: 2001 , Michał Moskal
+ * SPDX-FileCopyrightText: 2003 - 2005, Tomasz Kłoczko
+ * SPDX-FileCopyrightText: 2007 - 2013, Nicolas François
+ *
+ * SPDX-License-Identifier: BSD-3-Clause
+ */
+
+#include <config.h>
+
+#ident "$Id$"
+
+#include <stdio.h>
+#include "defines.h"
+#include "prototypes.h"
+#include "pwio.h"
+
+/*@null@*/ /*@only@*/struct passwd *__pw_dup (const struct passwd *pwent)
+{
+ struct passwd *pw;
+
+ pw = (struct passwd *) malloc (sizeof *pw);
+ if (NULL == pw) {
+ return NULL;
+ }
+ /* The libc might define other fields. They won't be copied. */
+ memset (pw, 0, sizeof *pw);
+ pw->pw_uid = pwent->pw_uid;
+ pw->pw_gid = pwent->pw_gid;
+ /*@-mustfreeonly@*/
+ pw->pw_name = strdup (pwent->pw_name);
+ /*@=mustfreeonly@*/
+ if (NULL == pw->pw_name) {
+ pw_free(pw);
+ return NULL;
+ }
+ /*@-mustfreeonly@*/
+ pw->pw_passwd = strdup (pwent->pw_passwd);
+ /*@=mustfreeonly@*/
+ if (NULL == pw->pw_passwd) {
+ pw_free(pw);
+ return NULL;
+ }
+ /*@-mustfreeonly@*/
+ pw->pw_gecos = strdup (pwent->pw_gecos);
+ /*@=mustfreeonly@*/
+ if (NULL == pw->pw_gecos) {
+ pw_free(pw);
+ return NULL;
+ }
+ /*@-mustfreeonly@*/
+ pw->pw_dir = strdup (pwent->pw_dir);
+ /*@=mustfreeonly@*/
+ if (NULL == pw->pw_dir) {
+ pw_free(pw);
+ return NULL;
+ }
+ /*@-mustfreeonly@*/
+ pw->pw_shell = strdup (pwent->pw_shell);
+ /*@=mustfreeonly@*/
+ if (NULL == pw->pw_shell) {
+ pw_free(pw);
+ return NULL;
+ }
+
+ return pw;
+}
+
+void pw_free (/*@out@*/ /*@only@*/struct passwd *pwent)
+{
+ if (pwent != NULL) {
+ free (pwent->pw_name);
+ if (pwent->pw_passwd) {
+ strzero (pwent->pw_passwd);
+ free (pwent->pw_passwd);
+ }
+ free (pwent->pw_gecos);
+ free (pwent->pw_dir);
+ free (pwent->pw_shell);
+ free (pwent);
+ }
+}
+