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-rw-r--r--source4/lib/util_pw.c89
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);
+}