Replace all uses of setXX[ug]id() and setgroups with samba_setXX[ug]id() calls.

Will allow thread-specific credentials to be added by modifying
the central definitions. Deliberately left the setXX[ug]id()
call in popt as this is not used in Samba.

1 files changed, 182 insertions, 0 deletions

diff --git a/lib/util/setid.c b/lib/util/setid.c
new file mode 100644
index 0000000000..8b2efc076f
--- /dev/null
+++ b/lib/util/setid.c
@@ -0,0 +1,182 @@
+/*
+   Unix SMB/CIFS implementation.
+   setXXid() functions for Samba.
+   Copyright (C) Jeremy Allison 2012
+
+   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 3 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, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef AUTOCONF_TEST
+#include "replace.h"
+#include "system/passwd.h"
+#include "include/includes.h"
+
+#ifdef UID_WRAPPER_REPLACE
+
+#ifdef samba_seteuid
+#undef samba_seteuid
+#endif
+
+#ifdef samba_setreuid
+#undef samba_setreuid
+#endif
+
+#ifdef samba_setresuid
+#undef samba_setresuid
+#endif
+
+#ifdef samba_setegid
+#undef samba_setegid
+#endif
+
+#ifdef samba_setregid
+#undef samba_setregid
+#endif
+
+#ifdef samba_setresgid
+#undef samba_setresgid
+#endif
+
+#ifdef samba_setgroups
+#undef samba_setgroups
+#endif
+
+/* uid_wrapper will have redefined these. */
+int samba_setresuid(uid_t ruid, uid_t euid, uid_t suid);
+int samba_setresgid(gid_t rgid, gid_t egid, gid_t sgid);
+int samba_setreuid(uid_t ruid, uid_t euid);
+int samba_setregid(gid_t rgid, gid_t egid);
+int samba_seteuid(uid_t euid);
+int samba_setegid(gid_t egid);
+int samba_setuid(uid_t uid);
+int samba_setgid(gid_t gid);
+int samba_setuidx(int flags, uid_t uid);
+int samba_setgidx(int flags, gid_t gid);
+int samba_setgroups(size_t setlen, const gid_t *gidset);
+
+#endif
+#endif
+
+#include "../lib/util/setid.h"
+
+/* All the setXX[ug]id functions and setgroups Samba uses. */
+int samba_setresuid(uid_t ruid, uid_t euid, uid_t suid)
+{
+#if defined(HAVE_SETRESUID)
+	return setresuid(ruid, euid, suid);
+#else
+	errno = ENOSYS;
+	return -1;
+#endif
+}
+
+int samba_setresgid(gid_t rgid, gid_t egid, gid_t sgid)
+{
+#if defined(HAVE_SETRESGID)
+	return setresgid(rgid, egid, sgid);
+#else
+	errno = ENOSYS;
+	return -1;
+#endif
+}
+
+int samba_setreuid(uid_t ruid, uid_t euid)
+{
+#if defined(HAVE_SETREUID)
+	return setreuid(ruid, euid);
+#else
+	errno = ENOSYS;
+	return -1;
+#endif
+}
+
+int samba_setregid(gid_t rgid, gid_t egid)
+{
+#if defined(HAVE_SETREGID)
+	return setregid(rgid, egid);
+#else
+	errno = ENOSYS;
+	return -1;
+#endif
+}
+
+int samba_seteuid(uid_t euid)
+{
+#if defined(HAVE_SETEUID)
+	return seteuid(euid);
+#else
+	errno = ENOSYS;
+	return -1;
+#endif
+}
+
+int samba_setegid(gid_t egid)
+{
+#if defined(HAVE_SETEGID)
+	return setegid(egid);
+#else
+	errno = ENOSYS;
+	return -1;
+#endif
+}
+
+int samba_setuid(uid_t uid)
+{
+#if defined(HAVE_SETUID)
+	return setuid(uid);
+#else
+	errno = ENOSYS;
+	return -1;
+#endif
+}
+
+int samba_setgid(gid_t gid)
+{
+#if defined(HAVE_SETGID)
+	return setgid(gid);
+#else
+	errno = ENOSYS;
+	return -1;
+#endif
+}
+
+int samba_setuidx(int flags, uid_t uid)
+{
+#if defined(HAVE_SETUIDX)
+	return setuidx(flags, uid);
+#else
+	errno = ENOSYS;
+	return -1;
+#endif
+}
+
+int samba_setgidx(int flags, gid_t gid)
+{
+#if defined(HAVE_SETGIDX)
+	return setgidx(flags, gid);
+#else
+	errno = ENOSYS;
+	return -1;
+#endif
+}
+
+int samba_setgroups(size_t setlen, const gid_t *gidset)
+{
+#if defined(HAVE_SETGROUPS)
+	return setgroups(setlen, gidset);
+#else
+	errno = ENOSYS;
+	return -1;
+#endif
+}