[Global]: loading init

deps/curl/tests/server/resolve.c

@@ -0,0 +1,156 @@
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
+ *
+ * This software is licensed as described in the file COPYING, which
+ * you should have received as part of this distribution. The terms
+ * are also available at https://curl.se/docs/copyright.html.
+ *
+ * You may opt to use, copy, modify, merge, publish, distribute and/or sell
+ * copies of the Software, and permit persons to whom the Software is
+ * furnished to do so, under the terms of the COPYING file.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ * SPDX-License-Identifier: curl
+ *
+ ***************************************************************************/
+#include "server_setup.h"
+
+/* Purpose
+ *
+ * Resolve the given name, using system name resolve functions (NOT any
+ * function provided by libcurl). Used to see if the name exists and thus if
+ * we can allow a test case to use it for testing.
+ *
+ * Like if 'localhost' actual exists etc.
+ *
+ */
+
+#include <signal.h>
+#ifdef HAVE_NETINET_IN_H
+#include <netinet/in.h>
+#endif
+#ifdef _XOPEN_SOURCE_EXTENDED
+/* This define is "almost" required to build on HPUX 11 */
+#include <arpa/inet.h>
+#endif
+#ifdef HAVE_NETDB_H
+#include <netdb.h>
+#endif
+
+#define ENABLE_CURLX_PRINTF
+/* make the curlx header define all printf() functions to use the curlx_*
+   versions instead */
+#include "curlx.h" /* from the private lib dir */
+#include "util.h"
+
+/* include memdebug.h last */
+#include "memdebug.h"
+
+static bool use_ipv6 = FALSE;
+static const char *ipv_inuse = "IPv4";
+
+const char *serverlogfile = ""; /* for a util.c function we don't use */
+
+int main(int argc, char *argv[])
+{
+  int arg = 1;
+  const char *host = NULL;
+  int rc = 0;
+
+  while(argc>arg) {
+    if(!strcmp("--version", argv[arg])) {
+      printf("resolve IPv4%s\n",
+#if defined(CURLRES_IPV6)
+             "/IPv6"
+#else
+             ""
+#endif
+             );
+      return 0;
+    }
+    else if(!strcmp("--ipv6", argv[arg])) {
+      ipv_inuse = "IPv6";
+      use_ipv6 = TRUE;
+      arg++;
+    }
+    else if(!strcmp("--ipv4", argv[arg])) {
+      /* for completeness, we support this option as well */
+      ipv_inuse = "IPv4";
+      use_ipv6 = FALSE;
+      arg++;
+    }
+    else {
+      host = argv[arg++];
+    }
+  }
+  if(!host) {
+    puts("Usage: resolve [option] <host>\n"
+         " --version\n"
+         " --ipv4"
+#if defined(CURLRES_IPV6)
+         "\n --ipv6"
+#endif
+         );
+    return 1;
+  }
+
+#ifdef _WIN32
+  win32_init();
+  atexit(win32_cleanup);
+#endif
+
+#if defined(CURLRES_IPV6)
+  if(use_ipv6) {
+    /* Check that the system has IPv6 enabled before checking the resolver */
+    curl_socket_t s = socket(PF_INET6, SOCK_DGRAM, 0);
+    if(s == CURL_SOCKET_BAD)
+      /* an IPv6 address was requested and we can't get/use one */
+      rc = -1;
+    else {
+      sclose(s);
+    }
+  }
+
+  if(rc == 0) {
+    /* getaddrinfo() resolve */
+    struct addrinfo *ai;
+    struct addrinfo hints;
+
+    memset(&hints, 0, sizeof(hints));
+    hints.ai_family = use_ipv6 ? PF_INET6 : PF_INET;
+    hints.ai_socktype = SOCK_STREAM;
+    hints.ai_flags = 0;
+    /* Use parenthesis around functions to stop them from being replaced by
+       the macro in memdebug.h */
+    rc = (getaddrinfo)(host, "80", &hints, &ai);
+    if(rc == 0)
+      (freeaddrinfo)(ai);
+  }
+#else
+  if(use_ipv6) {
+    puts("IPv6 support has been disabled in this program");
+    return 1;
+  }
+  else {
+    /* gethostbyname() resolve */
+    struct hostent *he;
+
+    he = gethostbyname(host);
+
+    rc = !he;
+  }
+#endif
+
+  if(rc)
+    printf("Resolving %s '%s' didn't work\n", ipv_inuse, host);
+
+  return !!rc;
+}