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    1: /***************************************************************************
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    7:  *
    8:  * Copyright (C) 1998 - 2018, Daniel Stenberg, <daniel@haxx.se>, et al.
    9:  *
   10:  * This software is licensed as described in the file COPYING, which
   11:  * you should have received as part of this distribution. The terms
   12:  * are also available at https://curl.haxx.se/docs/copyright.html.
   13:  *
   14:  * You may opt to use, copy, modify, merge, publish, distribute and/or sell
   15:  * copies of the Software, and permit persons to whom the Software is
   16:  * furnished to do so, under the terms of the COPYING file.
   17:  *
   18:  * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
   19:  * KIND, either express or implied.
   20:  *
   21:  ***************************************************************************/
   22: #include "curlcheck.h"
   23: 
   24: #include "urldata.h"
   25: #include "sendf.h"
   26: 
   27: /*
   28:  * This test hardcodes the knowledge of the buffer size which is internal to
   29:  * Curl_infof(). If that buffer is changed in size, this tests needs to be
   30:  * updated to still be valid.
   31:  */
   32: 
   33: static struct Curl_easy *data;
   34: 
   35: static char input[4096];
   36: static char result[4096];
   37: 
   38: int debugf_cb(CURL *handle, curl_infotype type, char *buf, size_t size,
   39:               void *userptr);
   40: 
   41: /*
   42:  * This debugf callback is simply dumping the string into the static buffer
   43:  * for the unit test to inspect. Since we know that we're only dealing with
   44:  * text we can afford the luxury of skipping the type check here.
   45:  */
   46: int
   47: debugf_cb(CURL *handle, curl_infotype type, char *buf, size_t size,
   48:                 void *userptr)
   49: {
   50:   (void)handle;
   51:   (void)type;
   52:   (void)userptr;
   53: 
   54:   memset(result, '\0', sizeof(result));
   55:   memcpy(result, buf, size);
   56:   return 0;
   57: }
   58: 
   59: static CURLcode
   60: unit_setup(void)
   61: {
   62:   int res = 0;
   63: 
   64:   global_init(CURL_GLOBAL_ALL);
   65:   data = curl_easy_init();
   66:   if(!data)
   67:     return CURLE_OUT_OF_MEMORY;
   68:   curl_easy_setopt(data, CURLOPT_DEBUGFUNCTION, debugf_cb);
   69:   curl_easy_setopt(data, CURLOPT_VERBOSE, 1L);
   70:   return CURLE_OK;
   71: }
   72: 
   73: static void
   74: unit_stop(void)
   75: {
   76:   curl_easy_cleanup(data);
   77:   curl_global_cleanup();
   78: }
   79: 
   80: UNITTEST_START
   81: 
   82: /* Injecting a simple short string via a format */
   83: msnprintf(input, sizeof(input), "Simple Test");
   84: Curl_infof(data, "%s", input);
   85: fail_unless(strcmp(result, input) == 0, "Simple string test");
   86: 
   87: /* Injecting a few different variables with a format */
   88: Curl_infof(data, "%s %u testing %lu\n", input, 42, 43L);
   89: fail_unless(strcmp(result, "Simple Test 42 testing 43\n") == 0,
   90:             "Format string");
   91: 
   92: /* Variations of empty strings */
   93: Curl_infof(data, "");
   94: fail_unless(strlen(result) == 0, "Empty string");
   95: Curl_infof(data, "%s", NULL);
   96: fail_unless(strcmp(result, "(nil)") == 0, "Passing NULL as string");
   97: 
   98: /* A string just long enough to not be truncated */
   99: memset(input, '\0', sizeof(input));
  100: memset(input, 'A', 2048);
  101: Curl_infof(data, "%s", input);
  102: fail_unless(strlen(result) == 2048, "No truncation of infof input");
  103: fail_unless(strcmp(result, input) == 0, "No truncation of infof input");
  104: fail_unless(result[sizeof(result) - 1] == '\0',
  105:             "No truncation of infof input");
  106: 
  107: /* Just over the limit for truncation without newline */
  108: memset(input + 2047, 'A', 4);
  109: Curl_infof(data, "%s", input);
  110: fail_unless(strlen(result) == 2048, "Truncation of infof input 1");
  111: fail_unless(result[sizeof(result) - 1] == '\0', "Truncation of infof input 1");
  112: fail_unless(strncmp(result + 2045, "...", 3) == 0,
  113:             "Truncation of infof input 1");
  114: 
  115: /* Just over the limit for truncation with newline */
  116: memset(input + 2047, 'A', 4);
  117: memset(input + 2047 + 4, '\n', 1);
  118: Curl_infof(data, "%s\n", input);
  119: fail_unless(strlen(result) == 2048, "Truncation of infof input 2");
  120: fail_unless(result[sizeof(result) - 1] == '\0', "Truncation of infof input 2");
  121: fail_unless(strncmp(result + 2044, "...", 3) == 0,
  122:             "Truncation of infof input 2");
  123: 
  124: /* Way over the limit for truncation with newline */
  125: memset(input, '\0', sizeof(input));
  126: memset(input, 'A', sizeof(input) - 1);
  127: Curl_infof(data, "%s\n", input);
  128: fail_unless(strlen(result) == 2048, "Truncation of infof input 3");
  129: fail_unless(result[sizeof(result) - 1] == '\0', "Truncation of infof input 3");
  130: fail_unless(strncmp(result + 2044, "...", 3) == 0,
  131:             "Truncation of infof input 3");
  132: 
  133: UNITTEST_STOP