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);
+	}
+}
+