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mqtt: handle POST/PUBLISH without a set POSTFIELDSIZE

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Detected by OSS-Fuzz
Bug: https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=28735

Added test 1916 and 1917 to verify.

Closes #6338
This commit is contained in:
Daniel Stenberg 2020-12-17 13:34:38 +01:00
parent 92fe66c510
commit debf23eead
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GPG key ID: 5CC908FDB71E12C2
8 changed files with 191 additions and 4 deletions
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8
tests/libtest/Makefile.inc
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@ -59,7 +59,7 @@ noinst_PROGRAMS = chkhostname libauthretry libntlmconnect \
lib1558 lib1559 lib1560 lib1564 lib1565 lib1567 \
lib1591 lib1592 lib1593 lib1594 lib1596 \
lib1905 lib1906 lib1907 lib1908 lib1910 lib1911 lib1912 lib1913 \
lib1915 \
lib1915 lib1916 lib1917 \
lib3010
chkdecimalpoint_SOURCES = chkdecimalpoint.c ../../lib/mprintf.c \
@ -655,6 +655,12 @@ lib1915_SOURCES = lib1915.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS)
lib1915_LDADD = $(TESTUTIL_LIBS)
lib1915_CPPFLAGS = $(AM_CPPFLAGS)
lib1916_SOURCES = lib1916.c $(SUPPORTFILES) $(WARNLESS)
lib1916_CPPFLAGS = $(AM_CPPFLAGS)
lib1917_SOURCES = lib1916.c $(SUPPORTFILES) $(WARNLESS)
lib1917_CPPFLAGS = $(AM_CPPFLAGS) -DLIB1917
lib3010_SOURCES = lib3010.c $(SUPPORTFILES) $(TESTUTIL) $(WARNLESS)
lib3010_LDADD = $(TESTUTIL_LIBS)
lib3010_CPPFLAGS = $(AM_CPPFLAGS)

54
tests/libtest/lib1916.c Normal file
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@ -0,0 +1,54 @@
/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 2020, 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.
*
***************************************************************************/
#include "test.h"
#include "warnless.h"
#include "memdebug.h"
int test(char *URL)
{
CURL *curl;
CURLcode res = CURLE_OK;
if(curl_global_init(CURL_GLOBAL_ALL) != CURLE_OK) {
fprintf(stderr, "curl_global_init() failed\n");
return TEST_ERR_MAJOR_BAD;
}
curl = curl_easy_init();
if(curl) {
curl_easy_setopt(curl, CURLOPT_URL, URL);
#ifdef LIB1917
/* without any postfields set! */
curl_easy_setopt(curl, CURLOPT_POST, 1L);
#else
curl_easy_setopt(curl, CURLOPT_POSTFIELDS, "");
#endif
res = curl_easy_perform(curl);
if(res) {
printf("res: %d\n", res);
}
curl_easy_cleanup(curl);
}
curl_global_cleanup();
return (int)res;
}