--- /dev/null
+/*
+ * BSD 3-Clause License
+ *
+ * Copyright (c) 2007, Stefan Metzmacher <metze@samba.org>
+ * Copyright (c) 2009, Guenther Deschner <gd@samba.org>
+ * Copyright (c) 2014-2015, Michael Adam <obnox@samba.org>
+ * Copyright (c) 2015, Robin Hack <hack.robin@gmail.com>
+ * Copyright (c) 2013-2018, Andreas Schneider <asn@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.
+ */
+
+#include <errno.h>
+#include <grp.h>
+#include <string.h>
+#include <stdint.h>
+
+#include "nss_utils.h"
+
+int nwrap_gr_copy_r(const struct group *src, struct group *dst,
+ char *buf, size_t buflen, struct group **dstp)
+{
+ char *p = NULL;
+ uintptr_t align = 0;
+ unsigned int gr_mem_cnt = 0;
+ unsigned i;
+ size_t total_len;
+ size_t gr_name_len = strlen(src->gr_name) + 1;
+ size_t gr_passwd_len = strlen(src->gr_passwd) + 1;
+ union {
+ char *ptr;
+ char **data;
+ } g_mem;
+
+ for (i = 0; src->gr_mem[i] != NULL; i++) {
+ gr_mem_cnt++;
+ }
+
+ /* Align the memory for storing pointers */
+ align = __alignof__(char *) - ((p - (char *)0) % __alignof__(char *));
+ total_len = align +
+ (1 + gr_mem_cnt) * sizeof(char *) +
+ gr_name_len + gr_passwd_len;
+
+ if (total_len > buflen) {
+ errno = ERANGE;
+ return -1;
+ }
+ buflen -= total_len;
+
+ /* gr_mem */
+ p = buf + align;
+ g_mem.ptr = p;
+ dst->gr_mem = g_mem.data;
+
+ /* gr_name */
+ p += (1 + gr_mem_cnt) * sizeof(char *);
+ dst->gr_name = p;
+
+ /* gr_passwd */
+ p += gr_name_len;
+ dst->gr_passwd = p;
+
+ /* gr_mem[x] */
+ p += gr_passwd_len;
+
+ /* gr_gid */
+ dst->gr_gid = src->gr_gid;
+
+ memcpy(dst->gr_name, src->gr_name, gr_name_len);
+
+ memcpy(dst->gr_passwd, src->gr_passwd, gr_passwd_len);
+
+ /* Set the terminating entry */
+ dst->gr_mem[gr_mem_cnt] = NULL;
+
+ /* Now add the group members content */
+ total_len = 0;
+ for (i = 0; i < gr_mem_cnt; i++) {
+ size_t len = strlen(src->gr_mem[i]) + 1;
+
+ dst->gr_mem[i] = p;
+ total_len += len;
+ p += len;
+ }
+
+ if (total_len > buflen) {
+ errno = ERANGE;
+ return -1;
+ }
+
+ for (i = 0; i < gr_mem_cnt; i++) {
+ size_t len = strlen(src->gr_mem[i]) + 1;
+
+ memcpy(dst->gr_mem[i],
+ src->gr_mem[i],
+ len);
+ }
+
+ if (dstp != NULL) {
+ *dstp = dst;
+ }
+
+ return 0;
+}
--- /dev/null
+/*
+ * BSD 3-Clause License
+ *
+ * Copyright (c) 2007, Stefan Metzmacher <metze@samba.org>
+ * Copyright (c) 2009, Guenther Deschner <gd@samba.org>
+ * Copyright (c) 2014-2015, Michael Adam <obnox@samba.org>
+ * Copyright (c) 2015, Robin Hack <hack.robin@gmail.com>
+ * Copyright (c) 2013-2018, Andreas Schneider <asn@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_UTILS_H
+#define NSS_UTILS_H
+#include <grp.h>
+
+int nwrap_gr_copy_r(const struct group *src, struct group *dst,
+ char *buf, size_t buflen, struct group **dstp);
+
+#endif //NSS_UTILS_H
git.samba.org / nss_wrapper.git / commitdiff