test1558: verify CURLINFO_PROTOCOL on file:// transfer

Attempt to reproduce issue #3444.

Closes #3447

tests/data/Makefile.inc

@@ -176,8 +176,7 @@ test1525 test1526 test1527 test1528 test1529 test1530 test1531 test1532 \
 test1533 test1534 test1535 test1536 test1537 test1538 \
 test1540 \
 test1550 test1551 test1552 test1553 test1554 test1555 test1556 test1557 \
-\
+test1558          test1560 test1561 test1562 \
-test1560 test1561 test1562 \
 \
 test1590 test1591 test1592 \
 \

tests/data/test1558

@@ -0,0 +1,50 @@
+<testcase>
+<info>
+<keywords>
+curl_easy_getinfo
+CURLINFO_PROTOCOL
+</keywords>
+</info>
+
+<reply>
+</reply>
+
+<client>
+<server>
+none
+</server>
+<features>
+file
+</features>
+<tool>
+lib1558
+</tool>
+
+<name>
+CURLINFO_PROTOCOL for file:// transfer
+</name>
+<setenv>
+# force MSYS2 to not convert the file: URL
+MSYS2_ARG_CONV_EXCL=file:
+</setenv>
+<command>
+file:%FILE_PWD/log/data1558
+</command>
+<file name="log/data1558">
+hello
+</file>
+</client>
+
+#
+# Verify that the test runs to completion without crashing
+<verify>
+<errorcode>
+0
+</errorcode>
+<stdout>
+hello
+Protocol: 400
+</stdout>
+</verify>
+
+</testcase>

tests/libtest/Makefile.inc

@@ -30,6 +30,7 @@ noinst_PROGRAMS = chkhostname libauthretry libntlmconnect                \
  lib1534 lib1535 lib1536 lib1537 lib1538 \
  lib1540 \
  lib1550 lib1551 lib1552 lib1553 lib1554 lib1555 lib1556 lib1557 \
+ lib1558 \
  lib1560 \
  lib1591 lib1592 \
  lib1900 \
@@ -516,6 +517,9 @@ lib1557_SOURCES = lib1557.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS)
 lib1557_LDADD = $(TESTUTIL_LIBS)
 lib1557_CPPFLAGS = $(AM_CPPFLAGS) -DLIB1557
 
+lib1558_SOURCES = lib1558.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS)
+lib1558_LDADD = $(TESTUTIL_LIBS)
+
 lib1560_SOURCES = lib1560.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS)
 lib1560_LDADD = $(TESTUTIL_LIBS)
 

tests/libtest/lib1558.c

@@ -0,0 +1,65 @@
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2019, 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.haxx.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"
+
+#include "testutil.h"
+#include "warnless.h"
+#include "memdebug.h"
+
+int test(char *URL)
+{
+  CURLcode res = 0;
+  CURL *curl = NULL;
+  long protocol = 0;
+
+  global_init(CURL_GLOBAL_ALL);
+  easy_init(curl);
+
+  easy_setopt(curl, CURLOPT_URL, URL);
+  res = curl_easy_perform(curl);
+  if(res) {
+    fprintf(stderr, "curl_easy_perform() returned %d (%s)\n",
+            res, curl_easy_strerror(res));
+    goto test_cleanup;
+  }
+
+  res = curl_easy_getinfo(curl, CURLINFO_PROTOCOL, &protocol);
+  if(res) {
+    fprintf(stderr, "curl_easy_getinfo() returned %d (%s)\n",
+            res, curl_easy_strerror(res));
+    goto test_cleanup;
+  }
+
+  printf("Protocol: %x\n", protocol);
+
+  curl_easy_cleanup(curl);
+  curl_global_cleanup();
+
+  return 0;
+
+test_cleanup:
+
+  curl_easy_cleanup(curl);
+  curl_global_cleanup();
+
+  return res; /* return the final return code */
+}