text: /***************************************************************************
   *                                  _   _ ____  _
   *  Project                     ___| | | |  _ \| |
   *                             / __| | | | |_) | |
   *                            | (__| |_| |  _ <| |___
   *                             \___|\___/|_| \_\_____|
   *
   * Copyright (C) 1998 - 2021, 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 "curlcheck.h"
  
  #include "urldata.h"
  #include "sendf.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 struct Curl_easy *data;
  
  static char input[4096];
  static char result[4096];
  
  int debugf_cb(CURL *handle, curl_infotype type, char *buf, size_t size,
                void *userptr);
  
  /*
   * This debugf callback is simply dumping the string into the static buffer
   * for the unit test to inspect. Since we know that we're only dealing with
   * text we can afford the luxury of skipping the type check here.
   */
  int
  debugf_cb(CURL *handle, curl_infotype type, char *buf, size_t size,
                  void *userptr)
  {
    (void)handle;
    (void)type;
    (void)userptr;
  
    memset(result, '\0', sizeof(result));
    memcpy(result, buf, size);
    return 0;
  }
  
  static CURLcode
  unit_setup(void)
  {
    int res = 0;
  
    global_init(CURL_GLOBAL_ALL);
    data = curl_easy_init();
    if(!data) {
      curl_global_cleanup();
      return CURLE_OUT_OF_MEMORY;
    }
    curl_easy_setopt(data, CURLOPT_DEBUGFUNCTION, debugf_cb);
    curl_easy_setopt(data, CURLOPT_VERBOSE, 1L);
    return CURLE_OK;
  }
  
  static void
  unit_stop(void)
  {
    curl_easy_cleanup(data);
    curl_global_cleanup();
  }
  
  UNITTEST_START
  
  /* Injecting a simple short string via a format */
  msnprintf(input, sizeof(input), "Simple Test");
  Curl_infof(data, "%s", input);
  fail_unless(strcmp(result, input) == 0, "Simple string test");
  
  /* Injecting a few different variables with a format */
  Curl_infof(data, "%s %u testing %lu\n", input, 42, 43L);
  fail_unless(strcmp(result, "Simple Test 42 testing 43\n") == 0,
              "Format string");
  
  /* Variations of empty strings */
  Curl_infof(data, "");
  fail_unless(strlen(result) == 0, "Empty string");
  Curl_infof(data, "%s", NULL);
  fail_unless(strcmp(result, "(nil)") == 0, "Passing NULL as string");
  
  /* A string just long enough to not be truncated */
  memset(input, '\0', sizeof(input));
  memset(input, 'A', 2048);
  Curl_infof(data, "%s", input);
  fail_unless(strlen(result) == 2048, "No truncation of infof input");
  fail_unless(strcmp(result, input) == 0, "No truncation of infof input");
  fail_unless(result[sizeof(result) - 1] == '\0',
              "No truncation of infof input");
  
  /* Just over the limit for truncation without newline */
  memset(input + 2047, 'A', 4);
  Curl_infof(data, "%s", input);
  fail_unless(strlen(result) == 2048, "Truncation of infof input 1");
  fail_unless(result[sizeof(result) - 1] == '\0', "Truncation of infof input 1");
  fail_unless(strncmp(result + 2045, "...", 3) == 0,
              "Truncation of infof input 1");
  
  /* Just over the limit for truncation with newline */
  memset(input + 2047, 'A', 4);
  memset(input + 2047 + 4, '\n', 1);
  Curl_infof(data, "%s\n", input);
  fail_unless(strlen(result) == 2048, "Truncation of infof input 2");
  fail_unless(result[sizeof(result) - 1] == '\0', "Truncation of infof input 2");
  fail_unless(strncmp(result + 2044, "...", 3) == 0,
              "Truncation of infof input 2");
  
  /* Way over the limit for truncation with newline */
  memset(input, '\0', sizeof(input));
  memset(input, 'A', sizeof(input) - 1);
  Curl_infof(data, "%s\n", input);
  fail_unless(strlen(result) == 2048, "Truncation of infof input 3");
  fail_unless(result[sizeof(result) - 1] == '\0', "Truncation of infof input 3");
  fail_unless(strncmp(result + 2044, "...", 3) == 0,
              "Truncation of infof input 3");
  
  UNITTEST_STOP
  