1 files changed, 89 insertions, 0 deletions
diff --git a/source4/lib/util_pw.c b/source4/lib/util_pw.c
new file mode 100644
index 0000000000..9d075a05e8
--- /dev/null
+++ b/source4/lib/util_pw.c
@@ -0,0 +1,89 @@
+/* 
+   Unix SMB/CIFS implementation.
+
+   Safe versions of getpw* calls
+
+   Copyright (C) Andrew Bartlett 2002
+   
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 2 of the License, or
+   (at your option) any later version.
+   
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+   
+   You should have received a copy of the GNU General Public License
+   along with this program; if not, write to the Free Software
+   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+*/
+
+#include "includes.h"
+
+static struct passwd *alloc_copy_passwd(const struct passwd *from) 
+{
+	struct passwd *ret = smb_xmalloc(sizeof(struct passwd));
+	ZERO_STRUCTP(ret);
+	ret->pw_name = smb_xstrdup(from->pw_name);
+	ret->pw_passwd = smb_xstrdup(from->pw_passwd);
+	ret->pw_uid = from->pw_uid;
+	ret->pw_gid = from->pw_gid;
+	ret->pw_gecos = smb_xstrdup(from->pw_gecos);
+	ret->pw_dir = smb_xstrdup(from->pw_dir);
+	ret->pw_shell = smb_xstrdup(from->pw_shell);
+	return ret;
+}
+
+void passwd_free (struct passwd **buf)
+{
+	if (!*buf) {
+		DEBUG(0, ("attempted double-free of allocated passwd\n"));
+		return;
+	}
+
+	SAFE_FREE((*buf)->pw_name);
+	SAFE_FREE((*buf)->pw_passwd);
+	SAFE_FREE((*buf)->pw_gecos);
+	SAFE_FREE((*buf)->pw_dir);
+	SAFE_FREE((*buf)->pw_shell);
+
+	SAFE_FREE(*buf);
+}
+
+struct passwd *getpwnam_alloc(const char *name) 
+{
+	struct passwd *temp;
+
+	temp = sys_getpwnam(name);
+	
+	if (!temp) {
+#if 0
+		if (errno == ENOMEM) {
+			/* what now? */
+		}
+#endif
+		return NULL;
+	}
+
+	return alloc_copy_passwd(temp);
+}
+
+struct passwd *getpwuid_alloc(uid_t uid) 
+{
+	struct passwd *temp;
+
+	temp = sys_getpwuid(uid);
+	
+	if (!temp) {
+#if 0
+		if (errno == ENOMEM) {
+			/* what now? */
+		}
+#endif
+		return NULL;
+	}
+
+	return alloc_copy_passwd(temp);
+}