text: /* TEMPLATE GENERATED TESTCASE FILE
  Filename: CWE187_Partial_Comparison__char_Environment_ncmp_user_pw_53d.c
  Label Definition File: CWE187_Partial_Comparison.label.xml
  Template File: sources-sinks-53d.tmpl.c
  */
  /*
   * @description
   * CWE: 187 Partial Comparison
   * BadSource: Environment Read input from an environment variable
   * GoodSource: Provide a matching password
   * Sinks: ncmp_user_pw
   *    GoodSink: Compare the 2 passwords correctly
   *    BadSink : use strncmp() to do password match, but use the length of the user password
   * Flow Variant: 53 Data flow: data passed as an argument from one function through two others to a fourth; all four functions are in different source files
   *
   * */
  
  #include "std_testcase.h"
  
  #include <wchar.h>
  
  #define PASSWORD "Password1234"
  /* PASSWORD_SZ must equal the length of PASSWORD */
  #define PASSWORD_SZ strlen(PASSWORD)
  
  #define ENV_VARIABLE "ADD"
  
  #ifdef _WIN32
  # define GETENV getenv
  #else
  # define GETENV getenv
  #endif
  
  #ifndef OMITBAD
  
  void CWE187_Partial_Comparison__char_Environment_ncmp_user_pw_53d_bad_sink(char * data)
  {
      /* By using the strlen() of the input password, you are able to create a partial comparison
       * For example if PASSWORD=PASSWORD1234, a user supplied password of PASSWORD12 will allow access */
      /* POTENTIAL FLAW: Possibly partially compare the two passwords */
      if (strncmp(PASSWORD, data, strlen(data)) == 0)
          printLine("Access granted");
      else
          printLine("Access denied!");
  }
  
  #endif /* OMITBAD */
  
  #ifndef OMITGOOD
  
  /* goodG2B uses the GoodSource with the BadSink */
  void CWE187_Partial_Comparison__char_Environment_ncmp_user_pw_53d_goodG2B_sink(char * data)
  {
      /* By using the strlen() of the input password, you are able to create a partial comparison
       * For example if PASSWORD=PASSWORD1234, a user supplied password of PASSWORD12 will allow access */
      /* POTENTIAL FLAW: Possibly partially compare the two passwords */
      if (strncmp(PASSWORD, data, strlen(data)) == 0)
          printLine("Access granted");
      else
          printLine("Access denied!");
  }
  
  /* goodB2G uses the BadSource with the GoodSink */
  void CWE187_Partial_Comparison__char_Environment_ncmp_user_pw_53d_goodB2G_sink(char * data)
  {
      /* Ideally, we would want to do a check to see if the passwords are of equal length */
      /* FIX: Compare the two passwords completely and correctly */
      if (strcmp(PASSWORD, data) == 0)
          printLine("Access granted");
      else
          printLine("Access denied!");
  }
  
  #endif /* OMITGOOD */
  