text: /* TEMPLATE GENERATED TESTCASE FILE
  Filename: CWE121_Stack_Based_Buffer_Overflow__CWE129_connect_socket_10.c
  Label Definition File: CWE121_Stack_Based_Buffer_Overflow__CWE129.label.xml
  Template File: sources-sinks-10.tmpl.c
  */
  /*
   * @description
   * CWE: 121 Stack Based Buffer Overflow
   * BadSource: connect_socket Read data using a connect socket (client side)
   * GoodSource: Larger than zero but less than 10
   * Sinks:
   *    GoodSink: Ensure the array index is valid
   *    BadSink : Improperly check the array index by not checking the upper bound
   * Flow Variant: 10 Control flow: if(globalTrue) and if(globalFalse)
   *
   * */
  
  #include "std_testcase.h"
  
  #ifdef _WIN32
  #include <winsock2.h>
  #include <windows.h>
  #include <direct.h>
  #pragma comment(lib, "ws2_32") /* include ws2_32.lib when linking */
  #define CLOSE_SOCKET closesocket
  #else /* NOT _WIN32 */
  #include <sys/types.h>
  #include <sys/socket.h>
  #include <netinet/in.h>
  #include <arpa/inet.h>
  #include <unistd.h>
  #define INVALID_SOCKET -1
  #define SOCKET_ERROR -1
  #define CLOSE_SOCKET close
  #define SOCKET int
  #endif
  
  #define TCP_PORT 27015
  #define IP_ADDRESS "127.0.0.1"
  #define CHAR_ARRAY_SIZE (3 * sizeof(data) + 2)
  
  #ifndef OMITBAD
  
  void CWE121_Stack_Based_Buffer_Overflow__CWE129_connect_socket_10_bad()
  {
      int data;
      /* Initialize data */
      data = -1;
      if(globalTrue)
      {
          {
  #ifdef _WIN32
              WSADATA wsaData;
              int wsaDataInit = 0;
  #endif
              int recvResult;
              struct sockaddr_in service;
              SOCKET connectSocket = INVALID_SOCKET;
              char inputBuffer[CHAR_ARRAY_SIZE];
              do
              {
  #ifdef _WIN32
                  if (WSAStartup(MAKEWORD(2,2), &wsaData) != NO_ERROR)
                  {
                      break;
                  }
                  wsaDataInit = 1;
  #endif
                  /* POTENTIAL FLAW: Read data using a connect socket */
                  connectSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
                  if (connectSocket == INVALID_SOCKET)
                  {
                      break;
                  }
                  memset(&service, 0, sizeof(service));
                  service.sin_family = AF_INET;
                  service.sin_addr.s_addr = inet_addr(IP_ADDRESS);
                  service.sin_port = htons(TCP_PORT);
                  if (connect(connectSocket, (struct sockaddr*)&service, sizeof(service)) == SOCKET_ERROR)
                  {
                      break;
                  }
                  /* Abort on error or the connection was closed, make sure to recv one
                   * less char than is in the recv_buf in order to append a terminator */
                  recvResult = recv(connectSocket, inputBuffer, CHAR_ARRAY_SIZE - 1, 0);
                  if (recvResult == SOCKET_ERROR || recvResult == 0)
                  {
                      break;
                  }
                  /* NUL-terminate the string */
                  inputBuffer[recvResult] = '\0';
                  /* Convert to int */
                  data = atoi(inputBuffer);
              }
              while (0);
              if (connectSocket != INVALID_SOCKET)
              {
                  CLOSE_SOCKET(connectSocket);
              }
  #ifdef _WIN32
              if (wsaDataInit)
              {
                  WSACleanup();
              }
  #endif
          }
      }
      if(globalTrue)
      {
          {
              int i;
              int buffer[10] = { 0 };
              /* POTENTIAL FLAW: Attempt to write to an index of the array that is above the upper bound
              * This code does check to see if the array index is negative */
              if (data >= 0)
              {
                  buffer[data] = 1;
                  /* Print the array values */
                  for(i = 0; i < 10; i++)
                  {
                      printIntLine(buffer[i]);
                  }
              }
              else
              {
                  printLine("ERROR: Array index is negative.");
              }
          }
      }
  }
  
  #endif /* OMITBAD */
  
  #ifndef OMITGOOD
  
  /* goodB2G1() - use badsource and goodsink by changing the second globalTrue to globalFalse */
  static void goodB2G1()
  {
      int data;
      /* Initialize data */
      data = -1;
      if(globalTrue)
      {
          {
  #ifdef _WIN32
              WSADATA wsaData;
              int wsaDataInit = 0;
  #endif
              int recvResult;
              struct sockaddr_in service;
              SOCKET connectSocket = INVALID_SOCKET;
              char inputBuffer[CHAR_ARRAY_SIZE];
              do
              {
  #ifdef _WIN32
                  if (WSAStartup(MAKEWORD(2,2), &wsaData) != NO_ERROR)
                  {
                      break;
                  }
                  wsaDataInit = 1;
  #endif
                  /* POTENTIAL FLAW: Read data using a connect socket */
                  connectSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
                  if (connectSocket == INVALID_SOCKET)
                  {
                      break;
                  }
                  memset(&service, 0, sizeof(service));
                  service.sin_family = AF_INET;
                  service.sin_addr.s_addr = inet_addr(IP_ADDRESS);
                  service.sin_port = htons(TCP_PORT);
                  if (connect(connectSocket, (struct sockaddr*)&service, sizeof(service)) == SOCKET_ERROR)
                  {
                      break;
                  }
                  /* Abort on error or the connection was closed, make sure to recv one
                   * less char than is in the recv_buf in order to append a terminator */
                  recvResult = recv(connectSocket, inputBuffer, CHAR_ARRAY_SIZE - 1, 0);
                  if (recvResult == SOCKET_ERROR || recvResult == 0)
                  {
                      break;
                  }
                  /* NUL-terminate the string */
                  inputBuffer[recvResult] = '\0';
                  /* Convert to int */
                  data = atoi(inputBuffer);
              }
              while (0);
              if (connectSocket != INVALID_SOCKET)
              {
                  CLOSE_SOCKET(connectSocket);
              }
  #ifdef _WIN32
              if (wsaDataInit)
              {
                  WSACleanup();
              }
  #endif
          }
      }
      if(globalFalse)
      {
          /* INCIDENTAL: CWE 561 Dead Code, the code below will never run */
          printLine("Benign, fixed string");
      }
      else
      {
          {
              int i;
              int buffer[10] = { 0 };
              /* FIX: Properly validate the array index and prevent a buffer overflow */
              if (data >= 0 && data < (10))
              {
                  buffer[data] = 1;
                  /* Print the array values */
                  for(i = 0; i < 10; i++)
                  {
                      printIntLine(buffer[i]);
                  }
              }
              else
              {
                  printLine("ERROR: Array index is out-of-bounds");
              }
          }
      }
  }
  
  /* goodB2G2() - use badsource and goodsink by reversing the blocks in the second if */
  static void goodB2G2()
  {
      int data;
      /* Initialize data */
      data = -1;
      if(globalTrue)
      {
          {
  #ifdef _WIN32
              WSADATA wsaData;
              int wsaDataInit = 0;
  #endif
              int recvResult;
              struct sockaddr_in service;
              SOCKET connectSocket = INVALID_SOCKET;
              char inputBuffer[CHAR_ARRAY_SIZE];
              do
              {
  #ifdef _WIN32
                  if (WSAStartup(MAKEWORD(2,2), &wsaData) != NO_ERROR)
                  {
                      break;
                  }
                  wsaDataInit = 1;
  #endif
                  /* POTENTIAL FLAW: Read data using a connect socket */
                  connectSocket = socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
                  if (connectSocket == INVALID_SOCKET)
                  {
                      break;
                  }
                  memset(&service, 0, sizeof(service));
                  service.sin_family = AF_INET;
                  service.sin_addr.s_addr = inet_addr(IP_ADDRESS);
                  service.sin_port = htons(TCP_PORT);
                  if (connect(connectSocket, (struct sockaddr*)&service, sizeof(service)) == SOCKET_ERROR)
                  {
                      break;
                  }
                  /* Abort on error or the connection was closed, make sure to recv one
                   * less char than is in the recv_buf in order to append a terminator */
                  recvResult = recv(connectSocket, inputBuffer, CHAR_ARRAY_SIZE - 1, 0);
                  if (recvResult == SOCKET_ERROR || recvResult == 0)
                  {
                      break;
                  }
                  /* NUL-terminate the string */
                  inputBuffer[recvResult] = '\0';
                  /* Convert to int */
                  data = atoi(inputBuffer);
              }
              while (0);
              if (connectSocket != INVALID_SOCKET)
              {
                  CLOSE_SOCKET(connectSocket);
              }
  #ifdef _WIN32
              if (wsaDataInit)
              {
                  WSACleanup();
              }
  #endif
          }
      }
      if(globalTrue)
      {
          {
              int i;
              int buffer[10] = { 0 };
              /* FIX: Properly validate the array index and prevent a buffer overflow */
              if (data >= 0 && data < (10))
              {
                  buffer[data] = 1;
                  /* Print the array values */
                  for(i = 0; i < 10; i++)
                  {
                      printIntLine(buffer[i]);
                  }
              }
              else
              {
                  printLine("ERROR: Array index is out-of-bounds");
              }
          }
      }
  }
  
  /* goodG2B1() - use goodsource and badsink by changing the first globalTrue to globalFalse */
  static void goodG2B1()
  {
      int data;
      /* Initialize data */
      data = -1;
      if(globalFalse)
      {
          /* INCIDENTAL: CWE 561 Dead Code, the code below will never run */
          printLine("Benign, fixed string");
      }
      else
      {
          /* FIX: Use a value greater than 0, but less than 10 to avoid attempting to
           * access an index of the array in the sink that is out-of-bounds */
          data = 7;
      }
      if(globalTrue)
      {
          {
              int i;
              int buffer[10] = { 0 };
              /* POTENTIAL FLAW: Attempt to write to an index of the array that is above the upper bound
              * This code does check to see if the array index is negative */
              if (data >= 0)
              {
                  buffer[data] = 1;
                  /* Print the array values */
                  for(i = 0; i < 10; i++)
                  {
                      printIntLine(buffer[i]);
                  }
              }
              else
              {
                  printLine("ERROR: Array index is negative.");
              }
          }
      }
  }
  
  /* goodG2B2() - use goodsource and badsink by reversing the blocks in the first if */
  static void goodG2B2()
  {
      int data;
      /* Initialize data */
      data = -1;
      if(globalTrue)
      {
          /* FIX: Use a value greater than 0, but less than 10 to avoid attempting to
           * access an index of the array in the sink that is out-of-bounds */
          data = 7;
      }
      if(globalTrue)
      {
          {
              int i;
              int buffer[10] = { 0 };
              /* POTENTIAL FLAW: Attempt to write to an index of the array that is above the upper bound
              * This code does check to see if the array index is negative */
              if (data >= 0)
              {
                  buffer[data] = 1;
                  /* Print the array values */
                  for(i = 0; i < 10; i++)
                  {
                      printIntLine(buffer[i]);
                  }
              }
              else
              {
                  printLine("ERROR: Array index is negative.");
              }
          }
      }
  }
  
  void CWE121_Stack_Based_Buffer_Overflow__CWE129_connect_socket_10_good()
  {
      goodB2G1();
      goodB2G2();
      goodG2B1();
      goodG2B2();
  }
  
  #endif /* OMITGOOD */
  
  /* Below is the main(). It is only used when building this testcase on
     its own for testing or for building a binary to use in testing binary
     analysis tools. It is not used when compiling all the testcases as one
     application, which is how source code analysis tools are tested. */
  
  #ifdef INCLUDEMAIN
  
  int main(int argc, char * argv[])
  {
      /* seed randomness */
      srand( (unsigned)time(NULL) );
  #ifndef OMITGOOD
      printLine("Calling good()...");
      CWE121_Stack_Based_Buffer_Overflow__CWE129_connect_socket_10_good();
      printLine("Finished good()");
  #endif /* OMITGOOD */
  #ifndef OMITBAD
      printLine("Calling bad()...");
      CWE121_Stack_Based_Buffer_Overflow__CWE129_connect_socket_10_bad();
      printLine("Finished bad()");
  #endif /* OMITBAD */
      return 0;
  }
  
  #endif
  