r25834: nss_wrapper: add lib/nss_wrapper skeleton

metze
(This used to be commit 9fdde8d5f5cc3ea49c0fb4078d7989058462e1d2)

4 files changed, 374 insertions, 0 deletions

diff --git a/source4/lib/nss_wrapper/config.m4 b/source4/lib/nss_wrapper/config.m4
new file mode 100644
index 0000000000..58e94f9830
--- /dev/null
+++ b/source4/lib/nss_wrapper/config.m4
@@ -0,0 +1,19 @@
+AC_ARG_ENABLE(nss-wrapper,
+[  --enable-nss-wrapper         Turn on nss wrapper library (default=no)])
+
+HAVE_NSS_WRAPPER=no
+
+if eval "test x$developer = xyes"; then
+	enable_nss_wrapper=yes
+fi
+
+if eval "test x$enable_nss_wrapper = xyes"; then
+        AC_DEFINE(NSS_WRAPPER,1,[Use nss wrapper library])
+	HAVE_NSS_WRAPPER=yes
+
+	# this is only used for samba3
+	NSS_WRAPPER_OBJS="lib/nss_wrapper/nss_wrapper.o"
+fi
+
+AC_SUBST(HAVE_NSS_WRAPPER)
+AC_SUBST(NSS_WRAPPER_OBJS)
diff --git a/source4/lib/nss_wrapper/config.mk b/source4/lib/nss_wrapper/config.mk
new file mode 100644
index 0000000000..9751d2bf73
--- /dev/null
+++ b/source4/lib/nss_wrapper/config.mk
@@ -0,0 +1,10 @@
+##############################
+# Start SUBSYSTEM NSS_WRAPPER
+[LIBRARY::NSS_WRAPPER]
+VERSION = 0.0.1
+SO_VERSION = 0
+DESCRIPTION = Wrapper library for testing nss calls without being root
+PUBLIC_HEADERS = nss_wrapper.h
+OBJ_FILES = nss_wrapper.o
+# End SUBSYSTEM NSS_WRAPPER
+##############################
diff --git a/source4/lib/nss_wrapper/nss_wrapper.c b/source4/lib/nss_wrapper/nss_wrapper.c
new file mode 100644
index 0000000000..b8c65c405d
--- /dev/null
+++ b/source4/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();
+}
diff --git a/source4/lib/nss_wrapper/nss_wrapper.h b/source4/lib/nss_wrapper/nss_wrapper.h
new file mode 100644
index 0000000000..35a47348a8
--- /dev/null
+++ b/source4/lib/nss_wrapper/nss_wrapper.h
@@ -0,0 +1,165 @@
+/*
+ * 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.
+ */
+
+#ifndef __NSS_WRAPPER_H__
+#define __NSS_WRAPPER_H__
+
+struct passwd *nwrap_getpwnam(const char *name);
+int nwrap_getpwnam_r(const char *name, struct passwd *pwbuf,
+		     char *buf, size_t buflen, struct passwd **pwbufp);
+struct passwd *nwrap_getpwuid(uid_t uid);
+int nwrap_getpwuid_r(uid_t uid, struct passwd *pwbuf,
+		     char *buf, size_t buflen, struct passwd **pwbufp);
+void nwrap_setpwent(void);
+struct passwd *nwrap_getpwent(void);
+int nwrap_getpwent_r(struct passwd *pwbuf, char *buf,
+		     size_t buflen, struct passwd **pwbufp);
+void nwrap_endpwent(void);
+int nwrap_initgroups(const char *user, gid_t group);
+struct group *nwrap_getgrnam(const char *name);
+int nwrap_getgrnam_r(const char *name, struct group *gbuf,
+		     char *buf, size_t buflen, struct group **gbufp);
+struct group *nwrap_getgrgid(gid_t gid);
+int nwrap_getgrgid_r(gid_t gid, struct group *gbuf,
+		     char *buf, size_t buflen, struct group **gbufp);
+void nwrap_setgrent(void);
+struct group *nwrap_getgrent(void);
+int nwrap_getgrent_r(struct group *gbuf, char *buf,
+		     size_t buflen, struct group **gbufp);
+void nwrap_endgrent(void);
+
+#ifdef NSS_WRAPPER_REPLACE
+
+#ifdef getpwnam
+#undef getpwnam
+#endif
+#define getpwnam	nwrap_getpwnam
+
+#ifdef getpwnam_r
+#undef getpwnam_r
+#endif
+#define getpwnam_r	nwrap_getpwnam_r
+
+#ifdef getpwuid
+#undef getpwuid
+#endif
+#define getpwuid	nwrap_getpwuid
+
+#ifdef getpwuid_r
+#undef getpwuid_r
+#endif
+#define getpwuid_r	nwrap_getpwuid_r
+
+#ifdef setpwent
+#undef setpwent
+#endif
+#define setpwent	nwrap_setpwent
+
+#ifdef getpwent
+#undef getpwent
+#endif
+#define getpwent	nwrap_getpwent
+
+#ifdef getpwent_r
+#undef getpwent_r
+#endif
+#define getpwent_r	nwrap_getpwent_r
+
+#ifdef endpwent
+#undef endpwent
+#endif
+#define endpwent	nwrap_endpwent
+
+#ifdef getgrlst
+#undef getgrlst
+#endif
+#define getgrlst	__none_nwrap_getgrlst
+
+#ifdef getgrlst_r
+#undef getgrlst_r
+#endif
+#define getgrlst_r	__none_nwrap_getgrlst_r
+
+#ifdef initgroups_dyn
+#undef initgroups_dyn
+#endif
+#define initgroups_dyn	__none_nwrap_initgroups_dyn
+
+#ifdef initgroups
+#undef initgroups
+#endif
+#define initgroups	nwrap_initgroups
+
+#ifdef getgrnam
+#undef getgrnam
+#endif
+#define getgrnam	nwrap_getgrnam
+
+#ifdef getgrnam_r
+#undef getgrnam_r
+#endif
+#define getgrnam_r	nwrap_getgrnam_r
+
+#ifdef getgrgid
+#undef getgrgid
+#endif
+#define getgrgid	nwrap_getgrgid
+
+#ifdef getgrgid_r
+#undef getgrgid_r
+#endif
+#define getgrgid_r	nwrap_getgrgid_r
+
+#ifdef setgrent
+#undef setgrent
+#endif
+#define setgrent	nwrap_setgrent
+
+#ifdef getgrent
+#undef getgrent
+#endif
+#define getgrent	nwrap_getgrent
+
+#ifdef getgrent_r
+#undef getgrent_r
+#endif
+#define getgrent_r	nwrap_getgrent_r
+
+#ifdef endgrent
+#undef endgrent
+#endif
+#define endgrent	nwrap_endgrent
+
+#endif /* NSS_WRAPPER_REPLACE */
+
+#endif /* __NSS_WRAPPER_H__ */