Initial checkin of gRPC to third_party/

third_party/grpc/src/core/iomgr/resolve_address_windows.c

Index: third_party/grpc/src/core/iomgr/resolve_address_windows.c
diff --git a/third_party/grpc/src/core/iomgr/resolve_address_windows.c b/third_party/grpc/src/core/iomgr/resolve_address_windows.c
new file mode 100644
index 0000000000000000000000000000000000000000..28c8661e73b1738adf208488b603080d285477cf
--- /dev/null
+++ b/third_party/grpc/src/core/iomgr/resolve_address_windows.c
@@ -0,0 +1,166 @@
+/*
+ *
+ * Copyright 2015-2016, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * 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.
+ *     * Neither the name of Google Inc. 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 COPYRIGHT HOLDERS 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 COPYRIGHT
+ * OWNER 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 <grpc/support/port_platform.h>
+#ifdef GPR_WINSOCK_SOCKET
+
+#include "src/core/iomgr/sockaddr.h"
+#include "src/core/iomgr/resolve_address.h"
+
+#include <sys/types.h>
+#include <string.h>
+
+#include "src/core/iomgr/executor.h"
+#include "src/core/iomgr/iomgr_internal.h"
+#include "src/core/iomgr/sockaddr_utils.h"
+#include "src/core/support/block_annotate.h"
+#include "src/core/support/string.h"
+#include <grpc/support/alloc.h>
+#include <grpc/support/host_port.h>
+#include <grpc/support/log.h>
+#include <grpc/support/log_win32.h>
+#include <grpc/support/string_util.h>
+#include <grpc/support/thd.h>
+#include <grpc/support/time.h>
+
+typedef struct {
+  char *name;
+  char *default_port;
+  grpc_resolve_cb cb;
+  grpc_closure request_closure;
+  void *arg;
+} request;
+
+grpc_resolved_addresses *grpc_blocking_resolve_address(
+    const char *name, const char *default_port) {
+  struct addrinfo hints;
+  struct addrinfo *result = NULL, *resp;
+  char *host;
+  char *port;
+  int s;
+  size_t i;
+  grpc_resolved_addresses *addrs = NULL;
+
+  /* parse name, splitting it into host and port parts */
+  gpr_split_host_port(name, &host, &port);
+  if (host == NULL) {
+    gpr_log(GPR_ERROR, "unparseable host:port: '%s'", name);
+    goto done;
+  }
+  if (port == NULL) {
+    if (default_port == NULL) {
+      gpr_log(GPR_ERROR, "no port in name '%s'", name);
+      goto done;
+    }
+    port = gpr_strdup(default_port);
+  }
+
+  /* Call getaddrinfo */
+  memset(&hints, 0, sizeof(hints));
+  hints.ai_family = AF_UNSPEC;     /* ipv4 or ipv6 */
+  hints.ai_socktype = SOCK_STREAM; /* stream socket */
+  hints.ai_flags = AI_PASSIVE;     /* for wildcard IP address */
+
+  GRPC_SCHEDULING_START_BLOCKING_REGION;
+  s = getaddrinfo(host, port, &hints, &result);
+  GRPC_SCHEDULING_END_BLOCKING_REGION;
+  if (s != 0) {
+    char *error_message = gpr_format_message(s);
+    gpr_log(GPR_ERROR, "getaddrinfo: %s", error_message);
+    gpr_free(error_message);
+    goto done;
+  }
+
+  /* Success path: set addrs non-NULL, fill it in */
+  addrs = gpr_malloc(sizeof(grpc_resolved_addresses));
+  addrs->naddrs = 0;
+  for (resp = result; resp != NULL; resp = resp->ai_next) {
+    addrs->naddrs++;
+  }
+  addrs->addrs = gpr_malloc(sizeof(grpc_resolved_address) * addrs->naddrs);
+  i = 0;
+  for (resp = result; resp != NULL; resp = resp->ai_next) {
+    memcpy(&addrs->addrs[i].addr, resp->ai_addr, resp->ai_addrlen);
+    addrs->addrs[i].len = resp->ai_addrlen;
+    i++;
+  }
+
+  {
+    for (i = 0; i < addrs->naddrs; i++) {
+      char *buf;
+      grpc_sockaddr_to_string(&buf, (struct sockaddr *)&addrs->addrs[i].addr,
+                              0);
+      gpr_free(buf);
+    }
+  }
+
+done:
+  gpr_free(host);
+  gpr_free(port);
+  if (result) {
+    freeaddrinfo(result);
+  }
+  return addrs;
+}
+
+/* Callback to be passed to grpc_executor to asynch-ify
+ * grpc_blocking_resolve_address */
+static void do_request_thread(grpc_exec_ctx *exec_ctx, void *rp, bool success) {
+  request *r = rp;
+  grpc_resolved_addresses *resolved =
+      grpc_blocking_resolve_address(r->name, r->default_port);
+  void *arg = r->arg;
+  grpc_resolve_cb cb = r->cb;
+  gpr_free(r->name);
+  gpr_free(r->default_port);
+  cb(exec_ctx, arg, resolved);
+  gpr_free(r);
+}
+
+void grpc_resolved_addresses_destroy(grpc_resolved_addresses *addrs) {
+  gpr_free(addrs->addrs);
+  gpr_free(addrs);
+}
+
+void grpc_resolve_address(const char *name, const char *default_port,
+                          grpc_resolve_cb cb, void *arg) {
+  request *r = gpr_malloc(sizeof(request));
+  grpc_closure_init(&r->request_closure, do_request_thread, r);
+  r->name = gpr_strdup(name);
+  r->default_port = gpr_strdup(default_port);
+  r->cb = cb;
+  r->arg = arg;
+  grpc_executor_enqueue(&r->request_closure, 1);
+}
+
+#endif