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-rw-r--r--third_party/heimdal/lib/roken/copyhostent.c98
1 files changed, 98 insertions, 0 deletions
diff --git a/third_party/heimdal/lib/roken/copyhostent.c b/third_party/heimdal/lib/roken/copyhostent.c
new file mode 100644
index 0000000..9b9dba2
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+++ b/third_party/heimdal/lib/roken/copyhostent.c
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+/*
+ * Copyright (c) 1999 Kungliga Tekniska Högskolan
+ * (Royal Institute of Technology, Stockholm, Sweden).
+ * 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 Institute 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 INSTITUTE 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 INSTITUTE 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 <config.h>
+
+#include "roken.h"
+
+/*
+ * return a malloced copy of `h'
+ */
+
+ROKEN_LIB_FUNCTION struct hostent * ROKEN_LIB_CALL
+rk_copyhostent(const struct hostent *h)
+{
+ struct hostent *res;
+ char **p;
+ int i, n;
+
+ res = malloc (sizeof (*res));
+ if (res == NULL)
+ return NULL;
+ res->h_name = NULL;
+ res->h_aliases = NULL;
+ res->h_addrtype = h->h_addrtype;
+ res->h_length = h->h_length;
+ res->h_addr_list = NULL;
+ res->h_name = strdup (h->h_name);
+ if (res->h_name == NULL) {
+ freehostent (res);
+ return NULL;
+ }
+ for (n = 0, p = h->h_aliases; *p != NULL; ++p)
+ ++n;
+ res->h_aliases = malloc ((n + 1) * sizeof(*res->h_aliases));
+ if (res->h_aliases == NULL) {
+ freehostent (res);
+ return NULL;
+ }
+ for (i = 0; i < n + 1; ++i)
+ res->h_aliases[i] = NULL;
+ for (i = 0; i < n; ++i) {
+ res->h_aliases[i] = strdup (h->h_aliases[i]);
+ if (res->h_aliases[i] == NULL) {
+ freehostent (res);
+ return NULL;
+ }
+ }
+
+ for (n = 0, p = h->h_addr_list; *p != NULL; ++p)
+ ++n;
+ res->h_addr_list = malloc ((n + 1) * sizeof(*res->h_addr_list));
+ if (res->h_addr_list == NULL) {
+ freehostent (res);
+ return NULL;
+ }
+ for (i = 0; i < n + 1; ++i) {
+ res->h_addr_list[i] = NULL;
+ }
+ for (i = 0; i < n; ++i) {
+ res->h_addr_list[i] = malloc (h->h_length);
+ if (res->h_addr_list[i] == NULL) {
+ freehostent (res);
+ return NULL;
+ }
+ memcpy (res->h_addr_list[i], h->h_addr_list[i], h->h_length);
+ }
+ return res;
+}