--- /dev/null
+/* SPDX-License-Identifier: BSD-3-Clause AND MIT */
+/*
+ * Copyright (C) 2014, Cloudius Systems, Ltd.
+ * Copyright (c) 2019, University Politehnica of Bucharest.
+ * 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 any co-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.
+ */
+/* For the parts taken from musl (marked as such below), the MIT licence
+ * applies instead:
+ * ----------------------------------------------------------------------
+ * Copyright (c) 2005-2014 Rich Felker, et al.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the
+ * "Software"), to deal in the Software without restriction, including
+ * without limitation the rights to use, copy, modify, merge, publish,
+ * distribute, sublicense, and/or sell copies of the Software, and to
+ * permit persons to whom the Software is furnished to do so, subject to
+ * the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be
+ * included in all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+ * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+ * IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+ * CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+ * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+ * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ * ----------------------------------------------------------------------
+ */
+#include <lwip/opt.h>
+#include <stdio.h>
+#include <sys/socket.h>
+#include <netdb.h>
+#include <arpa/inet.h>
+#include <string.h>
+
+int getnameinfo(const struct sockaddr *restrict sa, socklen_t sl,
+ char *restrict node, socklen_t nodelen,
+ char *restrict serv, socklen_t servlen,
+ int flags)
+{
+ char buf[256];
+ /*unsigned char reply[512]; TODO used in DNS reply */
+ int af = sa->sa_family;
+ char line[512];
+ FILE *f;
+ unsigned char *a;
+
+ switch (af) {
+ case AF_INET:
+ a = (void *) &((struct sockaddr_in *) sa)->sin_addr;
+ if (sl != sizeof(struct sockaddr_in))
+ return EAI_FAMILY;
+ break;
+#if CONFIG_LWIP_IPV6
+ case AF_INET6:
+ a = (void *) &((struct sockaddr_in6 *) sa)->sin6_addr;
+ if (sl != sizeof(struct sockaddr_in6))
+ return EAI_FAMILY;
+ break;
+#endif
+ default:
+ return EAI_FAMILY;
+ }
+
+ /* Try to find ip within /etc/hosts */
+ if ((node && nodelen) && (af == AF_INET)) {
+ const char *ipstr;
+ size_t l;
+
+ ipstr = inet_ntoa(((struct sockaddr_in *)sa)->sin_addr);
+ l = strlen(ipstr);
+ f = fopen("/etc/hosts", "r");
+ if (f)
+ while (fgets(line, sizeof(line), f)) {
+ char *domain;
+
+ if (strncmp(line, ipstr, l) != 0)
+ continue;
+
+ domain = strtok(line, " ");
+ if (!domain)
+ continue;
+ domain = strtok(NULL, " ");
+ if (!domain)
+ continue;
+
+ if (strlen(domain) >= nodelen)
+ return EAI_OVERFLOW;
+ strcpy(node, domain);
+ fclose(f);
+ return 0;
+ }
+ if (f)
+ fclose(f);
+ }
+
+ if (node && nodelen) {
+ if ((flags & NI_NUMERICHOST)
+#if 0
+ /* TODO we currently don't support name requests */
+ || __dns_query(reply, a, af, 1) <= 0
+ || __dns_get_rr(buf, 0, 256, 1, reply, RR_PTR, 1) <= 0) {
+#else
+ || 1) {
+#endif
+ if (flags & NI_NAMEREQD)
+ return EAI_NONAME;
+ inet_ntop(af, a, buf, sizeof(buf));
+ }
+ if (strlen(buf) >= nodelen)
+ return EAI_OVERFLOW;
+ strcpy(node, buf);
+ }
+
+ if (serv && servlen) {
+ if (snprintf(buf, sizeof(buf), "%d",
+ ntohs(((struct sockaddr_in *) sa)->sin_port)) >= (int) servlen)
+ return EAI_OVERFLOW;
+ strcpy(serv, buf);
+ }
+
+ return 0;
+}
projects / unikraft / libs / musl.git / commitdiff