text: #line 1 "helpers.function"
  /*----------------------------------------------------------------------------*/
  /* Headers */
  
  #include <stdlib.h>
  
  #if defined(MBEDTLS_PLATFORM_C)
  #include "mbedtls/platform.h"
  #else
  #include <stdio.h>
  #define mbedtls_fprintf    fprintf
  #define mbedtls_snprintf   snprintf
  #define mbedtls_calloc     calloc
  #define mbedtls_free       free
  #define mbedtls_exit       exit
  #define mbedtls_time       time
  #define mbedtls_time_t     time_t
  #define MBEDTLS_EXIT_SUCCESS EXIT_SUCCESS
  #define MBEDTLS_EXIT_FAILURE EXIT_FAILURE
  #endif
  
  #if defined(MBEDTLS_MEMORY_BUFFER_ALLOC_C)
  #include "mbedtls/memory_buffer_alloc.h"
  #endif
  
  #ifdef _MSC_VER
  #include <basetsd.h>
  typedef UINT32 uint32_t;
  #define strncasecmp _strnicmp
  #define strcasecmp _stricmp
  #else
  #include <stdint.h>
  #endif
  
  #include <string.h>
  
  #if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__))
  #include <unistd.h>
  #endif
  
  /*----------------------------------------------------------------------------*/
  /* Constants */
  
  #define DEPENDENCY_SUPPORTED        0
  #define DEPENDENCY_NOT_SUPPORTED    1
  
  #define KEY_VALUE_MAPPING_FOUND     0
  #define KEY_VALUE_MAPPING_NOT_FOUND -1
  
  #define DISPATCH_TEST_SUCCESS       0
  #define DISPATCH_TEST_FN_NOT_FOUND  1
  #define DISPATCH_INVALID_TEST_DATA  2
  #define DISPATCH_UNSUPPORTED_SUITE  3
  
  
  /*----------------------------------------------------------------------------*/
  /* Macros */
  
  #define TEST_ASSERT( TEST )                         \
      do {                                            \
          if( ! (TEST) )                              \
          {                                           \
              test_fail( #TEST, __LINE__, __FILE__ ); \
              goto exit;                              \
          }                                           \
      } while( 0 )
  
  #define assert(a) if( !( a ) )                                      \
  {                                                                   \
      mbedtls_fprintf( stderr, "Assertion Failed at %s:%d - %s\n",   \
                               __FILE__, __LINE__, #a );              \
      mbedtls_exit( 1 );                                             \
  }
  
  /*
   * 32-bit integer manipulation macros (big endian)
   */
  #ifndef GET_UINT32_BE
  #define GET_UINT32_BE(n,b,i)                            \
  {                                                       \
      (n) = ( (uint32_t) (b)[(i)    ] << 24 )             \
          | ( (uint32_t) (b)[(i) + 1] << 16 )             \
          | ( (uint32_t) (b)[(i) + 2] <<  8 )             \
          | ( (uint32_t) (b)[(i) + 3]       );            \
  }
  #endif
  
  #ifndef PUT_UINT32_BE
  #define PUT_UINT32_BE(n,b,i)                            \
  {                                                       \
      (b)[(i)    ] = (unsigned char) ( (n) >> 24 );       \
      (b)[(i) + 1] = (unsigned char) ( (n) >> 16 );       \
      (b)[(i) + 2] = (unsigned char) ( (n) >>  8 );       \
      (b)[(i) + 3] = (unsigned char) ( (n)       );       \
  }
  #endif
  
  
  /*----------------------------------------------------------------------------*/
  /* Global variables */
  
  static int test_errors = 0;
  
  
  /*----------------------------------------------------------------------------*/
  /* Helper Functions */
  
  #if defined(__unix__) || (defined(__APPLE__) && defined(__MACH__))
  static int redirect_output( FILE** out_stream, const char* path )
  {
      int stdout_fd = dup( fileno( *out_stream ) );
  
      if( stdout_fd == -1 )
      {
          return -1;
      }
  
      fflush( *out_stream );
      fclose( *out_stream );
      *out_stream = fopen( path, "w" );
  
      if( *out_stream == NULL )
      {
          return -1;
      }
  
      return stdout_fd;
  }
  
  static int restore_output( FILE** out_stream, int old_fd )
  {
      fflush( *out_stream );
      fclose( *out_stream );
  
      *out_stream = fdopen( old_fd, "w" );
      if( *out_stream == NULL )
      {
          return -1;
      }
  
      return 0;
  }
  
  static void close_output( FILE* out_stream )
  {
      fclose( out_stream );
  }
  #endif /* __unix__ || __APPLE__ __MACH__ */
  
  static int unhexify( unsigned char *obuf, const char *ibuf )
  {
      unsigned char c, c2;
      int len = strlen( ibuf ) / 2;
      assert( strlen( ibuf ) % 2 == 0 ); /* must be even number of bytes */
  
      while( *ibuf != 0 )
      {
          c = *ibuf++;
          if( c >= '0' && c <= '9' )
              c -= '0';
          else if( c >= 'a' && c <= 'f' )
              c -= 'a' - 10;
          else if( c >= 'A' && c <= 'F' )
              c -= 'A' - 10;
          else
              assert( 0 );
  
          c2 = *ibuf++;
          if( c2 >= '0' && c2 <= '9' )
              c2 -= '0';
          else if( c2 >= 'a' && c2 <= 'f' )
              c2 -= 'a' - 10;
          else if( c2 >= 'A' && c2 <= 'F' )
              c2 -= 'A' - 10;
          else
              assert( 0 );
  
          *obuf++ = ( c << 4 ) | c2;
      }
  
      return len;
  }
  
  static void hexify( unsigned char *obuf, const unsigned char *ibuf, int len )
  {
      unsigned char l, h;
  
      while( len != 0 )
      {
          h = *ibuf / 16;
          l = *ibuf % 16;
  
          if( h < 10 )
              *obuf++ = '0' + h;
          else
              *obuf++ = 'a' + h - 10;
  
          if( l < 10 )
              *obuf++ = '0' + l;
          else
              *obuf++ = 'a' + l - 10;
  
          ++ibuf;
          len--;
      }
  }
  
  /**
   * Allocate and zeroize a buffer.
   *
   * If the size if zero, a pointer to a zeroized 1-byte buffer is returned.
   *
   * For convenience, dies if allocation fails.
   */
  static unsigned char *zero_alloc( size_t len )
  {
      void *p;
      size_t actual_len = ( len != 0 ) ? len : 1;
  
      p = mbedtls_calloc( 1, actual_len );
      assert( p != NULL );
  
      memset( p, 0x00, actual_len );
  
      return( p );
  }
  
  /**
   * Allocate and fill a buffer from hex data.
   *
   * The buffer is sized exactly as needed. This allows to detect buffer
   * overruns (including overreads) when running the test suite under valgrind.
   *
   * If the size if zero, a pointer to a zeroized 1-byte buffer is returned.
   *
   * For convenience, dies if allocation fails.
   */
  static unsigned char *unhexify_alloc( const char *ibuf, size_t *olen )
  {
      unsigned char *obuf;
  
      *olen = strlen( ibuf ) / 2;
  
      if( *olen == 0 )
          return( zero_alloc( *olen ) );
  
      obuf = mbedtls_calloc( 1, *olen );
      assert( obuf != NULL );
  
      (void) unhexify( obuf, ibuf );
  
      return( obuf );
  }
  
  /**
   * This function just returns data from rand().
   * Although predictable and often similar on multiple
   * runs, this does not result in identical random on
   * each run. So do not use this if the results of a
   * test depend on the random data that is generated.
   *
   * rng_state shall be NULL.
   */
  static int rnd_std_rand( void *rng_state, unsigned char *output, size_t len )
  {
  #if !defined(__OpenBSD__)
      size_t i;
  
      if( rng_state != NULL )
          rng_state  = NULL;
  
      for( i = 0; i < len; ++i )
          output[i] = rand();
  #else
      if( rng_state != NULL )
          rng_state = NULL;
  
      arc4random_buf( output, len );
  #endif /* !OpenBSD */
  
      return( 0 );
  }
  
  /**
   * This function only returns zeros
   *
   * rng_state shall be NULL.
   */
  static int rnd_zero_rand( void *rng_state, unsigned char *output, size_t len )
  {
      if( rng_state != NULL )
          rng_state  = NULL;
  
      memset( output, 0, len );
  
      return( 0 );
  }
  
  typedef struct
  {
      unsigned char *buf;
      size_t length;
  } rnd_buf_info;
  
  /**
   * This function returns random based on a buffer it receives.
   *
   * rng_state shall be a pointer to a rnd_buf_info structure.
   *
   * The number of bytes released from the buffer on each call to
   * the random function is specified by per_call. (Can be between
   * 1 and 4)
   *
   * After the buffer is empty it will return rand();
   */
  static int rnd_buffer_rand( void *rng_state, unsigned char *output, size_t len )
  {
      rnd_buf_info *info = (rnd_buf_info *) rng_state;
      size_t use_len;
  
      if( rng_state == NULL )
          return( rnd_std_rand( NULL, output, len ) );
  
      use_len = len;
      if( len > info->length )
          use_len = info->length;
  
      if( use_len )
      {
          memcpy( output, info->buf, use_len );
          info->buf += use_len;
          info->length -= use_len;
      }
  
      if( len - use_len > 0 )
          return( rnd_std_rand( NULL, output + use_len, len - use_len ) );
  
      return( 0 );
  }
  
  /**
   * Info structure for the pseudo random function
   *
   * Key should be set at the start to a test-unique value.
   * Do not forget endianness!
   * State( v0, v1 ) should be set to zero.
   */
  typedef struct
  {
      uint32_t key[16];
      uint32_t v0, v1;
  } rnd_pseudo_info;
  
  /**
   * This function returns random based on a pseudo random function.
   * This means the results should be identical on all systems.
   * Pseudo random is based on the XTEA encryption algorithm to
   * generate pseudorandom.
   *
   * rng_state shall be a pointer to a rnd_pseudo_info structure.
   */
  static int rnd_pseudo_rand( void *rng_state, unsigned char *output, size_t len )
  {
      rnd_pseudo_info *info = (rnd_pseudo_info *) rng_state;
      uint32_t i, *k, sum, delta=0x9E3779B9;
      unsigned char result[4], *out = output;
  
      if( rng_state == NULL )
          return( rnd_std_rand( NULL, output, len ) );
  
      k = info->key;
  
      while( len > 0 )
      {
          size_t use_len = ( len > 4 ) ? 4 : len;
          sum = 0;
  
          for( i = 0; i < 32; i++ )
          {
              info->v0 += ( ( ( info->v1 << 4 ) ^ ( info->v1 >> 5 ) )
                              + info->v1 ) ^ ( sum + k[sum & 3] );
              sum += delta;
              info->v1 += ( ( ( info->v0 << 4 ) ^ ( info->v0 >> 5 ) )
                              + info->v0 ) ^ ( sum + k[( sum>>11 ) & 3] );
          }
  
          PUT_UINT32_BE( info->v0, result, 0 );
          memcpy( out, result, use_len );
          len -= use_len;
          out += 4;
      }
  
      return( 0 );
  }
  
  static void test_fail( const char *test, int line_no, const char* filename )
  {
      test_errors++;
      if( test_errors == 1 )
          mbedtls_fprintf( stdout, "FAILED\n" );
      mbedtls_fprintf( stdout, "  %s\n  at line %d, %s\n", test, line_no,
                          filename );
  }
  
  