Cryptlib/SysCall/CrtWrapper.c - main - githubmirror/shim

Cryptlib/SysCall/CrtWrapper.c
456 строк8 KB
Nicolas Frayer
Cryptlib/OpenSSL: update to openssl 3.5.0
08 июл 2026, 17:36
08 июл 2026, 17:363b52c67
/** @file
  C Run-Time Libraries (CRT) Wrapper Implementation for OpenSSL-based
  Cryptographic Library.

Copyright (c) 2009 - 2017, Intel Corporation. All rights reserved.<BR>
SPDX-License-Identifier: BSD-2-Clause-Patent

**/

#include <CrtLibSupport.h>
#include <ctype.h>
#include <stddef.h>

int  errno = 0;

FILE  *stderr = NULL;
FILE  *stdin  = NULL;
FILE  *stdout = NULL;

typedef
int
(*SORT_COMPARE)(
  IN  VOID  *Buffer1,
  IN  VOID  *Buffer2
  );

//
// Duplicated from EDKII BaseSortLib for qsort() wrapper
//
STATIC
VOID
QuickSortWorker (
  IN OUT    VOID          *BufferToSort,
  IN CONST  UINTN         Count,
  IN CONST  UINTN         ElementSize,
  IN        SORT_COMPARE  CompareFunction,
  IN        VOID          *Buffer
  )
{
  VOID   *Pivot;
  UINTN  LoopCount;
  UINTN  NextSwapLocation;

  ASSERT (BufferToSort    != NULL);
  ASSERT (CompareFunction != NULL);
  ASSERT (Buffer          != NULL);

  if ((Count < 2) || (ElementSize  < 1)) {
    return;
  }

  NextSwapLocation = 0;

  //
  // Pick a pivot (we choose last element)
  //
  Pivot = ((UINT8 *)BufferToSort + ((Count - 1) * ElementSize));

  //
  // Now get the pivot such that all on "left" are below it
  // and everything "right" are above it
  //
  for (LoopCount = 0; LoopCount < Count - 1; LoopCount++) {
    //
    // If the element is less than the pivot
    //
    if (CompareFunction ((VOID *)((UINT8 *)BufferToSort + ((LoopCount) * ElementSize)), Pivot) <= 0) {
      //
      // Swap
      //
      CopyMem (Buffer, (UINT8 *)BufferToSort + (NextSwapLocation * ElementSize), ElementSize);
      CopyMem ((UINT8 *)BufferToSort + (NextSwapLocation * ElementSize), (UINT8 *)BufferToSort + ((LoopCount) * ElementSize), ElementSize);
      CopyMem ((UINT8 *)BufferToSort + ((LoopCount) * ElementSize), Buffer, ElementSize);

      //
      // Increment NextSwapLocation
      //
      NextSwapLocation++;
    }
  }

  //
  // Swap pivot to its final position (NextSwapLocation)
  //
  CopyMem (Buffer, Pivot, ElementSize);
  CopyMem (Pivot, (UINT8 *)BufferToSort + (NextSwapLocation * ElementSize), ElementSize);
  CopyMem ((UINT8 *)BufferToSort + (NextSwapLocation * ElementSize), Buffer, ElementSize);

  //
  // Now recurse on 2 partial lists.  Neither of these will have the 'pivot' element.
  // IE list is sorted left half, pivot element, sorted right half...
  //
  QuickSortWorker (
    BufferToSort,
    NextSwapLocation,
    ElementSize,
    CompareFunction,
    Buffer
    );

  QuickSortWorker (
    (UINT8 *)BufferToSort + (NextSwapLocation + 1) * ElementSize,
    Count - NextSwapLocation - 1,
    ElementSize,
    CompareFunction,
    Buffer
    );

  return;
}

// ---------------------------------------------------------
// Standard C Run-time Library Interface Wrapper
// ---------------------------------------------------------

//
// -- String Manipulation Routines --
//

/* Read formatted data from a string */
int
sscanf (
  const char  *buffer,
  const char  *format,
  ...
  )
{
  //
  // Null sscanf() function implementation to satisfy the linker, since
  // no direct functionality logic dependency in present UEFI cases.
  //
  return 0;
}

//
// -- Data Conversion Routines --
//

/* Convert strings to a long-integer value */
long
strtol (
  const char  *nptr,
  char        **endptr,
  int         base
  )
{
  //
  // Null strtol() function implementation to satisfy the linker, since there is
  // no direct functionality logic dependency in present UEFI cases.
  //
  return 0;
}

/* Convert strings to an unsigned long-integer value */
unsigned long
strtoul (
  const char  *nptr,
  char        **endptr,
  int         base
  )
{
  //
  // Null strtoul() function implementation to satisfy the linker, since there is
  // no direct functionality logic dependency in present UEFI cases.
  //
  return 0;
}

//
// -- Searching and Sorting Routines --
//

/* Performs a quick sort */
void
qsort (
  void *base,
  size_t num,
  size_t width,
  int ( *compare )(const void *, const void *)
  )
{
  VOID  *Buffer;

  ASSERT (base    != NULL);
  ASSERT (compare != NULL);

  //
  // Use CRT-style malloc to cover BS and RT memory allocation.
  //
  Buffer = malloc (width);
  if (Buffer == NULL) {
    ASSERT (Buffer != NULL);
    return;
  }

  //
  // Re-use PerformQuickSort() function Implementation in EDKII BaseSortLib.
  //
  QuickSortWorker (base, (UINTN)num, (UINTN)width, (SORT_COMPARE)compare, Buffer);

  free (Buffer);
  return;
}

//
// -- Process and Environment Control Routines --
//

/* Get a value from the current environment */
char *
getenv (
  const char  *varname
  )
{
  //
  // Null getenv() function implementation to satisfy the linker, since there is
  // no direct functionality logic dependency in present UEFI cases.
  //
  return NULL;
}

/* Get a value from the current environment */
char *
secure_getenv (
  const char  *varname
  )
{
  //
  // Null secure_getenv() function implementation to satisfy the linker, since
  // there is no direct functionality logic dependency in present UEFI cases.
  //
  // From the secure_getenv() manual: 'just like getenv() except that it
  // returns NULL in cases where "secure execution" is required'.
  //
  return NULL;
}

//
// -- Stream I/O Routines --
//

/* Write formatted output using a pointer to a list of arguments */
int vfprintf (FILE *stream, const char *format, VA_LIST arg)
{
  return 0;
}

/* Write data to a stream */
size_t
fwrite (
  const void  *buffer,
  size_t      size,
  size_t      count,
  FILE        *stream
  )
{
  return 0;
}

//
//  -- Dummy OpenSSL Support Routines --
//

void *UI_OpenSSL(void)
{
  return NULL;
}

int X509_load_cert_file (VOID *ctx, const char *file, int type)
{
  return 0;
}

int X509_load_crl_file (VOID *ctx, const char *file, int type)
{
  return 0;
}

int chmod (const char *c, mode_t m)
{
  return -1;
}

int close (int f)
{
  return -1;
}

void closelog (void)
{

}

#ifdef __GNUC__

typedef
VOID
(EFIAPI *NoReturnFuncPtr)(
  VOID
  ) __attribute__ ((__noreturn__));

STATIC
VOID
EFIAPI
NopFunction (
  VOID
  )
{
}

void
abort (
  void
  )
{
  NoReturnFuncPtr  NoReturnFunc;

  NoReturnFunc = (NoReturnFuncPtr)NopFunction;

  NoReturnFunc ();
}


void exit (int e)
{
  NoReturnFuncPtr NoReturnFunc;

  NoReturnFunc = (NoReturnFuncPtr) NopFunction;

  NoReturnFunc ();
}

#else

void
abort (
  void
  )
{
  // Do nothing
}

void exit (int e)
{
}

#endif

int
fclose (
  FILE  *f
  )
{
  return 0;
}

FILE *
fopen (
  const char  *c,
  const char  *m
  )
{
  return NULL;
}

size_t
fread (
  void    *b,
  size_t  c,
  size_t  i,
  FILE    *f
  )
{
  return 0;
}

int fputs (const char *s, FILE *f)
{
  return 0;
}

int fprintf (FILE *f, const char *s, ...)
{
  return 0;
}

uid_t
getuid (
  void
  )
{
  return 0;
}

uid_t
geteuid (
  void
  )
{
  return 0;
}

gid_t
getgid (
  void
  )
{
  return 0;
}

gid_t
getegid (
  void
  )
{
  return 0;
}

off_t lseek (int a, off_t o, int d)
{
  return 0;
}

void openlog (const char *c, int a, int b)
{

}

ssize_t read (int f, void *b, size_t c)
{
  return 0;
}

int stat (const char *c, struct stat *s)
{
  return -1;
}

void syslog (int a, const char *c, ...)
{

}

ssize_t write (int f, const void *b, size_t l)
{
  return 0;
}

int
printf (
  char const  *fmt,
  ...
  )
{
  return 0;
}