tests/unit/unit3214.c - master - githubmirror/curl

tests/unit/unit3214.c
91 строка4 KB
Stefan Eissing
hardening: add API guards
22 июл 2026, 00:22
22 июл 2026, 00:22dfc01ea
/***************************************************************************
 *                                  _   _ ____  _
 *  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 "unitcheck.h"
#include "urldata.h"

static void checksize(const char *name, size_t size, size_t allowed)
{
  /* Some platforms, e.g., CHERI, have 128-bit pointers. Allow structs to be
     double the size of what we would typically expect. */
  if(sizeof(void *) > 8)
    allowed *= sizeof(void *) / 8;

  if(size > allowed) {
    curl_mfprintf(stderr, "BAD: struct %s is %zu bytes, "
                  "allowed to be %zu: %zu bytes too big\n",
                  name, size, allowed, size - allowed);
    unitfail++;
  }
  else {
    curl_mprintf("FINE: struct %s is %zu bytes, "
                 "allowed %zu (margin: %zu bytes)\n",
                 name, size, allowed, allowed - size);
  }
}

/* The maximum sizes we allow specific structs to grow to.
   These sizes were chosen with platforms with 64-bit pointers in mind. */
#define MAX_CURL_EASY           5370
#define MAX_CONNECTDATA         1300
#define MAX_CURL_MULTI          920
#define MAX_CURL_HTTPPOST       112
#define MAX_CURL_SLIST          16
#define MAX_CURL_KHKEY          24
#define MAX_CURL_HSTSENTRY      40
#define MAX_CURL_INDEX          16
#define MAX_CURL_MIME           96
#define MAX_CURL_MIMEPART       440
#define MAX_CURL_CERTINFO       16
#define MAX_CURL_TLSSESSIONINFO 16
#define MAX_CURL_BLOB           24
#define MAX_CURLMSG             24
#define MAX_CURL_HEADER         48

static CURLcode test_unit3214(const char *arg)
{
  UNITTEST_BEGIN_SIMPLE

  checksize("Curl_easy", sizeof(struct Curl_easy), MAX_CURL_EASY);
  checksize("connectdata", sizeof(struct connectdata), MAX_CONNECTDATA);
  checksize("Curl_multi", sizeof(struct Curl_multi), MAX_CURL_MULTI);

  /* public structs MUST NOT change (unless controlled), but exact sizes
     depend on architecture */
  checksize("curl_httppost", sizeof(struct curl_httppost), MAX_CURL_HTTPPOST);
  checksize("curl_slist", sizeof(struct curl_slist), MAX_CURL_SLIST);
  checksize("curl_khkey", sizeof(struct curl_khkey), MAX_CURL_KHKEY);
  checksize("curl_hstsentry", sizeof(struct curl_hstsentry),
            MAX_CURL_HSTSENTRY);
  checksize("curl_index", sizeof(struct curl_index), MAX_CURL_INDEX);
  checksize("curl_mime", sizeof(struct curl_mime), MAX_CURL_MIME);
  checksize("curl_mimepart", sizeof(struct curl_mimepart), MAX_CURL_MIMEPART);
  checksize("curl_certinfo", sizeof(struct curl_certinfo), MAX_CURL_CERTINFO);
  checksize("curl_tlssessioninfo", sizeof(struct curl_tlssessioninfo),
            MAX_CURL_TLSSESSIONINFO);
  checksize("curl_blob", sizeof(struct curl_blob), MAX_CURL_BLOB);
  checksize("CURLMsg", sizeof(struct CURLMsg), MAX_CURLMSG);
  checksize("curl_header", sizeof(struct curl_header), MAX_CURL_HEADER);

  UNITTEST_END_SIMPLE
}