test1662: verify formpost, 301 redirect, no rewind possible

Reproduces #9735 and verifies the subsequent fix. The original issue
uses a pipe that cannot be rewound, but this test case instead sets a
callback without rewind ability to get roughly the same properties but
being a much more portable test.

tests/data/Makefile.inc

@@ -208,7 +208,7 @@ test1620 test1621 \
 test1630 test1631 test1632 test1633 test1634 test1635 \
 \
 test1650 test1651 test1652 test1653 test1654 test1655 \
-test1660 test1661 \
+test1660 test1661 test1662 \
 \
 test1670 test1671 \
 \

tests/data/test1662

@@ -0,0 +1,67 @@
+<testcase><testcase>
+<info>
+<keywords>
+HTTP
+HTTP POST
+</keywords>
+</info>
+
+#
+# Server-side
+<reply>
+<data nocheck="yes">
+HTTP/1.1 301 OK
+Date: Tue, 09 Nov 2010 14:49:00 GMT
+Server: test-server/fake
+Last-Modified: Tue, 13 Jun 2000 12:10:00 GMT
+ETag: "21025-dc7-39462498"
+Accept-Ranges: bytes
+Content-Length: 6
+Location: %TESTNUMBER0002
+Content-Type: text/html
+Funny-head: yesyes
+
+-foo-
+</data>
+<data2 nocheck="yes">
+HTTP/1.1 200 OK
+Content-Length: 6
+Connection: close
+Funny-head: nono
+
+-bar-
+</data2>
+</reply>
+
+#
+# Client-side
+<client>
+<features>
+Mime
+debug
+</features>
+<server>
+http
+</server>
+<name>
+HTTP formpost from callback and a redirect and switch to GET
+</name>
+<tool>
+lib%TESTNUMBER
+</tool>
+<command>
+http://%HOSTIP:%HTTPPORT/%TESTNUMBER
+</command>
+</client>
+
+#
+# Verify data after the test has been "shot"
+<verify>
+
+# This does not verify the protocol because the sending of data might be
+# aborted early making it hard to check properly.
+<stdout>
+-bar-
+</stdout>
+</verify>
+</testcase>

tests/libtest/Makefile.inc

@@ -62,6 +62,9 @@ noinst_PROGRAMS = chkhostname libauthretry libntlmconnect                \
  lib1550 lib1551 lib1552 lib1553 lib1554 lib1555 lib1556 lib1557 \
  lib1558 lib1559 lib1560 lib1564 lib1565 lib1567 lib1568 lib1569 \
  lib1591 lib1592 lib1593 lib1594 lib1596 lib1597 \
+ \
+ lib1662 \
+ \
          lib1905 lib1906 lib1907 lib1908 lib1910 lib1911 lib1912 lib1913 \
          lib1915 lib1916 lib1917 lib1918 lib1919 \
  lib1933 lib1934 lib1935 lib1936 lib1937 lib1938 lib1939 lib1940 \
@@ -667,6 +670,9 @@ lib1596_CPPFLAGS = $(AM_CPPFLAGS) -DLIB1596
 lib1597_SOURCES = lib1597.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS)
 lib1597_LDADD = $(TESTUTIL_LIBS)
 
+lib1662_SOURCES = lib1662.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS)
+lib1662_LDADD = $(TESTUTIL_LIBS)
+
 lib1905_SOURCES = lib1905.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS)
 lib1905_LDADD = $(TESTUTIL_LIBS)
 lib1905_CPPFLAGS = $(AM_CPPFLAGS)

tests/libtest/lib1662.c

@@ -0,0 +1,91 @@
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  Project                     ___| | | |  _ \| |
+ *                             / __| | | | |_) | |
+ *                            | (__| |_| |  _ <| |___
+ *                             \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2022, 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 "test.h"
+
+static char data[]="mooaaa";
+
+struct WriteThis {
+  size_t sizeleft;
+};
+
+static size_t read_callback(char *ptr, size_t size, size_t nmemb, void *userp)
+{
+  struct WriteThis *pooh = (struct WriteThis *)userp;
+  size_t len = strlen(data);
+
+  if(size*nmemb < len)
+    return 0;
+
+  if(pooh->sizeleft) {
+    memcpy(ptr, data, strlen(data));
+    pooh->sizeleft = 0;
+    return len;
+  }
+
+  return 0;                         /* no more data left to deliver */
+}
+
+
+int test(char *URL)
+{
+  CURLcode res = CURLE_OK;
+  CURL *hnd;
+  curl_mime *mime1;
+  curl_mimepart *part1;
+  struct WriteThis pooh = { 1 };
+
+  mime1 = NULL;
+
+  global_init(CURL_GLOBAL_ALL);
+
+  hnd = curl_easy_init();
+  if(hnd) {
+    curl_easy_setopt(hnd, CURLOPT_BUFFERSIZE, 102400L);
+    curl_easy_setopt(hnd, CURLOPT_URL, URL);
+    curl_easy_setopt(hnd, CURLOPT_NOPROGRESS, 1L);
+    mime1 = curl_mime_init(hnd);
+    if(mime1) {
+      part1 = curl_mime_addpart(mime1);
+      curl_mime_data_cb(part1, -1, read_callback, NULL, NULL, &pooh);
+      curl_mime_filename(part1, "poetry.txt");
+      curl_mime_name(part1, "content");
+      curl_easy_setopt(hnd, CURLOPT_MIMEPOST, mime1);
+      curl_easy_setopt(hnd, CURLOPT_USERAGENT, "curl/2000");
+      curl_easy_setopt(hnd, CURLOPT_FOLLOWLOCATION, 1L);
+      curl_easy_setopt(hnd, CURLOPT_MAXREDIRS, 50L);
+      curl_easy_setopt(hnd, CURLOPT_HTTP_VERSION,
+                       (long)CURL_HTTP_VERSION_2TLS);
+      curl_easy_setopt(hnd, CURLOPT_VERBOSE, 1L);
+      curl_easy_setopt(hnd, CURLOPT_FTP_SKIP_PASV_IP, 1L);
+      curl_easy_setopt(hnd, CURLOPT_TCP_KEEPALIVE, 1L);
+      res = curl_easy_perform(hnd);
+    }
+  }
+
+  curl_easy_cleanup(hnd);
+  curl_mime_free(mime1);
+  curl_global_cleanup();
+  return (int)res;
+}
+