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/***************************************************************************
* _ _ ____ _
* 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"
#include "curl_trc.h"
/*
* This test hardcodes the knowledge of the buffer size which is internal to
* Curl_infof(). If that buffer is changed in size, this tests needs to be
* updated to still be valid.
*/
static char input[4096];
static char output[4096];
/*
* This debugf callback dumps the string into the static buffer
* for the unit test to inspect. Since we know that we are only dealing with
* text we can afford the luxury of skipping the type check here.
*/
static int debugf_cb(CURL *handle, curl_infotype type, char *buf, size_t size,
void *userptr)
{
(void)handle;
(void)type;
(void)userptr;
memset(output, '\0', sizeof(output));
memcpy(output, buf, size);
return 0;
}
static CURLcode t1652_setup(struct Curl_easy **easy)
{
CURLcode result = CURLE_OK;
global_init(CURL_GLOBAL_ALL);
*easy = curl_easy_init();
if(!*easy) {
curl_global_cleanup();
return CURLE_OUT_OF_MEMORY;
}
curl_easy_setopt(*easy, CURLOPT_DEBUGFUNCTION, debugf_cb);
curl_easy_setopt(*easy, CURLOPT_VERBOSE, 1L);
return result;
}
static void t1652_stop(struct Curl_easy *easy)
{
curl_easy_cleanup(easy);
curl_global_cleanup();
}
static int verify(const char *info, const char *two)
{
/* the 'info' one has a newline appended */
const char *nl = strchr(info, '\n');
if(!nl)
return 1; /* nope */
return strncmp(info, two, nl - info);
}
static CURLcode test_unit1652(const char *arg)
{
struct Curl_easy *easy;
UNITTEST_BEGIN(t1652_setup(&easy))
#if defined(CURL_GNUC_DIAG) && !defined(__clang__)
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wformat"
#pragma GCC diagnostic ignored "-Wformat-zero-length"
#if __GNUC__ >= 7
#pragma GCC diagnostic ignored "-Wformat-overflow"
#endif
#endif
/* Injecting a simple short string via a format */
curl_msnprintf(input, sizeof(input), "Simple Test");
Curl_infof(easy, "%s", input);
fail_unless(verify(output, input) == 0, "Simple string test");
/* Injecting a few different variables with a format */
Curl_infof(easy, "%s %u testing %lu", input, 42, 43L);
fail_unless(verify(output, "Simple Test 42 testing 43\n") == 0,
"Format string");
/* Variations of empty strings */
Curl_infof(easy, "");
fail_unless(strlen(output) == 1, "Empty string");
Curl_infof(easy, "%s", (char *)NULL);
fail_unless(verify(output, "(nil)") == 0, "Passing NULL as string");
/* Note: libcurl's tracebuffer hold 2048 bytes, so the max strlen() we
* get out of it is 2047, since we need a \0 at the end.
* Curl_infof() in addition adds a \n at the end, making the effective
* output 2046 characters.
* Any input that long or longer will truncated, ending in '...\n'.
*/
/* A string just long enough to not be truncated */
memset(input, '\0', sizeof(input));
memset(input, 'A', 2045);
Curl_infof(easy, "%s", input);
curl_mfprintf(stderr, "output len %zu: %s", strlen(output), output);
/* output is input + \n */
fail_unless(strlen(output) == 2046, "No truncation of infof input");
fail_unless(verify(output, input) == 0, "No truncation of infof input");
fail_unless(output[sizeof(output) - 1] == '\0',
"No truncation of infof input");
/* Just over the limit without newline for truncation via '...' */
memset(input + 2045, 'A', 4);
Curl_infof(easy, "%s", input);
curl_mfprintf(stderr, "output len %zu: %s", strlen(output), output);
fail_unless(strlen(output) == 2047, "Truncation of infof input 1");
fail_unless(output[sizeof(output) - 1] == '\0',
"Truncation of infof input 1");
/* Just over the limit with newline for truncation via '...' */
memset(input + 2045, 'A', 4);
memset(input + 2045 + 4, '\n', 1);
Curl_infof(easy, "%s", input);
curl_mfprintf(stderr, "output len %zu: %s", strlen(output), output);
fail_unless(strlen(output) == 2047, "Truncation of infof input 2");
fail_unless(output[sizeof(output) - 1] == '\0',
"Truncation of infof input 2");
/* Way over the limit for truncation via '...' */
memset(input, '\0', sizeof(input));
memset(input, 'A', sizeof(input) - 1);
Curl_infof(easy, "%s", input);
curl_mfprintf(stderr, "output len %zu: %s", strlen(output), output);
fail_unless(strlen(output) == 2047, "Truncation of infof input 3");
fail_unless(output[sizeof(output) - 1] == '\0',
"Truncation of infof input 3");
#if defined(CURL_GNUC_DIAG) && !defined(__clang__)
#pragma GCC diagnostic pop
#endif
UNITTEST_END(t1652_stop(easy))
}
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