1 files changed, 98 insertions, 0 deletions
diff --git a/tests/libtest/libprereq.c b/tests/libtest/libprereq.c
new file mode 100644
index 000000000..11eb18c06
--- /dev/null
+++ b/tests/libtest/libprereq.c
@@ -0,0 +1,98 @@
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 2021, Max Dymond, <max.dymond@microsoft.com>
+ *
+ * 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.
+ *
+ ***************************************************************************/
+#include "test.h"
+
+typedef struct prcs {
+  int prereq_retcode;
+  int ipv6;
+} PRCS;
+
+static int prereq_callback(void *clientp,
+                           char *conn_primary_ip,
+                           char *conn_local_ip,
+                           int conn_primary_port,
+                           int conn_local_port)
+{
+  PRCS *prereq_cb = (PRCS *)clientp;
+
+  if(prereq_cb->ipv6) {
+    printf("Connected to [%s]\n", conn_primary_ip);
+    printf("Connected from [%s]\n", conn_local_ip);
+  }
+  else {
+    printf("Connected to %s\n", conn_primary_ip);
+    printf("Connected from %s\n", conn_local_ip);
+  }
+
+  printf("Remote port = %d\n", conn_primary_port);
+  printf("Local port = %d\n", conn_local_port);
+  printf("Returning = %d\n", prereq_cb->prereq_retcode);
+  return prereq_cb->prereq_retcode;
+}
+
+int test(char *URL)
+{
+  PRCS prereq_cb;
+  CURLcode ret = CURLE_OK;
+  CURL *curl = NULL;
+
+  prereq_cb.prereq_retcode = CURL_PREREQFUNC_OK;
+  prereq_cb.ipv6 = 0;
+
+  curl_global_init(CURL_GLOBAL_ALL);
+  curl = curl_easy_init();
+
+  if(curl) {
+    if(strstr(URL, "#ipv6")) {
+      /* The IP addresses should be surrounded by brackets! */
+      prereq_cb.ipv6 = 1;
+    }
+    if(strstr(URL, "#err")) {
+      /* Set the callback to exit with failure */
+      prereq_cb.prereq_retcode = CURL_PREREQFUNC_ABORT;
+    }
+
+    curl_easy_setopt(curl, CURLOPT_URL, URL);
+    curl_easy_setopt(curl, CURLOPT_PREREQFUNCTION, prereq_callback);
+    curl_easy_setopt(curl, CURLOPT_PREREQDATA, &prereq_cb);
+    curl_easy_setopt(curl, CURLOPT_WRITEDATA, stderr);
+
+    if(strstr(URL, "#redir")) {
+      /* Enable follow-location */
+      curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1);
+    }
+
+    ret = curl_easy_perform(curl);
+    if(ret) {
+      fprintf(stderr, "%s:%d curl_easy_perform() failed with code %d (%s)\n",
+          __FILE__, __LINE__, ret, curl_easy_strerror(ret));
+      goto test_cleanup;
+    }
+  }
+
+test_cleanup:
+  curl_easy_cleanup(curl);
+  curl_global_cleanup();
+
+  return ret;
+}
+