nss_wrapper: add lib/nss_wrapper skeleton

metze

git-svn-id: svn+ssh://svn.samba.org/data/svn/samba/branches/SAMBA_4_0@25834 0c0555d6-39d7-0310-84fc-f1cc0bd64818
(This used to be commit 0924b0c8de70c0b84785cf6885f6aab325fc9b8e)

1 files changed, 180 insertions, 0 deletions

diff --git a/source3/lib/nss_wrapper/nss_wrapper.c b/source3/lib/nss_wrapper/nss_wrapper.c
new file mode 100644
index 0000000000..b8c65c405d
--- /dev/null
+++ b/source3/lib/nss_wrapper/nss_wrapper.c
@@ -0,0 +1,180 @@
+/*
+ * Copyright (C) Stefan Metzmacher 2007 <metze@samba.org>
+ *
+ * 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. Neither the name of the author nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
+ */
+
+#ifdef _SAMBA_BUILD_
+
+#define NSS_WRAPPER_NOT_REPLACE
+#include "lib/replace/replace.h"
+#include "system/passwd.h"
+#include "system/filesys.h"
+
+#else /* _SAMBA_BUILD_ */
+
+#error nss_wrapper_only_supported_in_samba_yet
+
+#endif
+
+#ifndef _PUBLIC_
+#define _PUBLIC_
+#endif
+
+/* LD_PRELOAD doesn't work yet, so REWRITE_CALLS is all we support
+ * for now */
+#define REWRITE_CALLS
+
+#ifdef REWRITE_CALLS
+
+#define real_getpwnam		getpwnam
+#define real_getpwnam_r		getpwnam_r
+#define real_getpwuid		getpwuid
+#define real_getpwuid_r		getpwuid_r
+
+#define real_setpwent		setpwent
+#define real_getpwent		getpwent
+#define real_getpwent_r		getpwent_r
+#define real_endpwent		endpwent
+
+/*
+#define real_getgrlst		getgrlst
+#define real_getgrlst_r		getgrlst_r
+#define real_initgroups_dyn	initgroups_dyn
+*/
+#define real_initgroups		initgroups
+
+#define real_getgrnam		getgrnam
+#define real_getgrnam_r		getgrnam_r
+#define real_getgrgid		getgrgid
+#define real_getgrgid_r		getgrgid_r
+
+#define real_setgrent		setgrent
+#define real_getgrent		getgrent
+#define real_getgrent_r		getgrent_r
+#define real_endgrent		endgrent
+
+#endif
+
+/* user functions */
+_PUBLIC_ struct passwd *nwrap_getpwnam(const char *name)
+{
+	return real_getpwnam(name);
+}
+
+_PUBLIC_ int nwrap_getpwnam_r(const char *name, struct passwd *pwbuf,
+			      char *buf, size_t buflen, struct passwd **pwbufp)
+{
+	return real_getpwnam_r(name, pwbuf, buf, buflen, pwbufp);
+}
+
+_PUBLIC_ struct passwd *nwrap_getpwuid(uid_t uid)
+{
+	return real_getpwuid(uid);
+}
+
+_PUBLIC_ int nwrap_getpwuid_r(uid_t uid, struct passwd *pwbuf,
+			      char *buf, size_t buflen, struct passwd **pwbufp)
+{
+	return real_getpwuid_r(uid, pwbuf, buf, buflen, pwbufp);
+}
+
+/* user enum functions */
+_PUBLIC_ void nwrap_setpwent(void)
+{
+	real_setpwent();
+}
+
+_PUBLIC_ struct passwd *nwrap_getpwent(void)
+{
+	return real_getpwent();
+}
+
+_PUBLIC_ int nwrap_getpwent_r(struct passwd *pwbuf, char *buf,
+			      size_t buflen, struct passwd **pwbufp)
+{
+	return real_getpwent_r(pwbuf, buf, buflen, pwbufp);
+}
+
+_PUBLIC_ void nwrap_endpwent(void)
+{
+	real_endpwent();
+}
+
+/* misc functions */
+_PUBLIC_ int nwrap_initgroups(const char *user, gid_t group)
+{
+	return real_initgroups(user, group);
+}
+
+/* group functions */
+_PUBLIC_ struct group *nwrap_getgrnam(const char *name)
+{
+	return real_getgrnam(name);
+}
+
+_PUBLIC_ int nwrap_getgrnam_r(const char *name, struct group *gbuf,
+			      char *buf, size_t buflen, struct group **gbufp)
+{
+	return real_getgrnam_r(name, gbuf, buf, buflen, gbufp);
+}
+
+_PUBLIC_ struct group *nwrap_getgrgid(gid_t gid)
+{
+	return real_getgrgid(gid);
+}
+
+_PUBLIC_ int nwrap_getgrgid_r(gid_t gid, struct group *gbuf,
+			      char *buf, size_t buflen, struct group **gbufp)
+{
+	return real_getgrgid_r(gid, gbuf, buf, buflen, gbufp);
+}
+
+/* group enum functions */
+_PUBLIC_ void nwrap_setgrent(void)
+{
+	real_setgrent();
+}
+
+_PUBLIC_ struct group *nwrap_getgrent(void)
+{
+	return real_getgrent();
+}
+
+_PUBLIC_ int nwrap_getgrent_r(struct group *gbuf, char *buf,
+			      size_t buflen, struct group **gbufp)
+{
+	return real_getgrent_r(gbuf, buf, buflen, gbufp);
+}
+
+_PUBLIC_ void nwrap_endgrent(void)
+{
+	real_endgrent();
+}