un-nest curl

curl-8.15.0/tests/libtest/lib1939.c

@@ -0,0 +1,71 @@
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  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 "first.h"
+
+#include "memdebug.h"
+
+static CURLcode test_lib1939(char *URL)
+{
+  CURLM *multi;
+  CURL *easy;
+  int running_handles;
+
+  curl_global_init(CURL_GLOBAL_DEFAULT);
+
+  multi = curl_multi_init();
+  if(multi) {
+    easy = curl_easy_init();
+    if(easy) {
+      CURLcode c;
+      CURLMcode m;
+
+      /* Crash only happens when using HTTPS */
+      c = curl_easy_setopt(easy, CURLOPT_URL, URL);
+      if(!c)
+        /* Any old HTTP tunneling proxy will do here */
+        c = curl_easy_setopt(easy, CURLOPT_PROXY, libtest_arg2);
+
+      if(!c) {
+
+        /* We're going to drive the transfer using multi interface here,
+           because we want to stop during the middle. */
+        m = curl_multi_add_handle(multi, easy);
+
+        if(!m)
+          /* Run the multi handle once, just enough to start establishing an
+             HTTPS connection. */
+          m = curl_multi_perform(multi, &running_handles);
+
+        if(m)
+          curl_mfprintf(stderr, "curl_multi_perform failed\n");
+      }
+      /* Close the easy handle *before* the multi handle. Doing it the other
+         way around avoids the issue. */
+      curl_easy_cleanup(easy);
+    }
+    curl_multi_cleanup(multi); /* double-free happens here */
+  }
+  curl_global_cleanup();
+  return CURLE_OK;
+}