Update contrib/libs/c-ares to 1.33.0

023d295bf695dc8b9df70e1ee966dc423cdf62ca

1 files changed, 106 insertions, 0 deletions

diff --git a/contrib/libs/c-ares/src/lib/legacy/ares_parse_a_reply.c b/contrib/libs/c-ares/src/lib/legacy/ares_parse_a_reply.c
new file mode 100644
index 0000000000..0981b90eea
--- /dev/null
+++ b/contrib/libs/c-ares/src/lib/legacy/ares_parse_a_reply.c
@@ -0,0 +1,106 @@
+/* MIT License
+ *
+ * Copyright (c) 1998 Massachusetts Institute of Technology
+ * Copyright (c) 2019 Andrew Selivanov
+ *
+ * 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 (including the next
+ * paragraph) 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.
+ *
+ * SPDX-License-Identifier: MIT
+ */
+
+#include "ares_private.h"
+
+#ifdef HAVE_NETINET_IN_H
+#  include <netinet/in.h>
+#endif
+#ifdef HAVE_NETDB_H
+#  include <netdb.h>
+#endif
+#ifdef HAVE_ARPA_INET_H
+#  include <arpa/inet.h>
+#endif
+
+#ifdef HAVE_STRINGS_H
+#  include <strings.h>
+#endif
+
+#ifdef HAVE_LIMITS_H
+#  include <limits.h>
+#endif
+
+int ares_parse_a_reply(const unsigned char *abuf, int alen,
+                       struct hostent **host, struct ares_addrttl *addrttls,
+                       int *naddrttls)
+{
+  struct ares_addrinfo ai;
+  char                *question_hostname = NULL;
+  ares_status_t        status;
+  size_t               req_naddrttls = 0;
+  ares_dns_record_t   *dnsrec        = NULL;
+
+  if (alen < 0) {
+    return ARES_EBADRESP;
+  }
+
+  if (naddrttls) {
+    req_naddrttls = (size_t)*naddrttls;
+    *naddrttls    = 0;
+  }
+
+  memset(&ai, 0, sizeof(ai));
+
+  status = ares_dns_parse(abuf, (size_t)alen, 0, &dnsrec);
+  if (status != ARES_SUCCESS) {
+    goto fail;
+  }
+
+  status = ares__parse_into_addrinfo(dnsrec, 0, 0, &ai);
+  if (status != ARES_SUCCESS && status != ARES_ENODATA) {
+    goto fail;
+  }
+
+  if (host != NULL) {
+    status = ares__addrinfo2hostent(&ai, AF_INET, host);
+    if (status != ARES_SUCCESS && status != ARES_ENODATA) {
+      goto fail; /* LCOV_EXCL_LINE: DefensiveCoding */
+    }
+  }
+
+  if (addrttls != NULL && req_naddrttls) {
+    size_t temp_naddrttls = 0;
+    ares__addrinfo2addrttl(&ai, AF_INET, req_naddrttls, addrttls, NULL,
+                           &temp_naddrttls);
+    *naddrttls = (int)temp_naddrttls;
+  }
+
+
+fail:
+  ares__freeaddrinfo_cnames(ai.cnames);
+  ares__freeaddrinfo_nodes(ai.nodes);
+  ares_free(ai.name);
+  ares_free(question_hostname);
+  ares_dns_record_destroy(dnsrec);
+
+  if (status == ARES_EBADNAME) {
+    status = ARES_EBADRESP;
+  }
+
+  return (int)status;
+}