1: #if (defined(_WIN64) || defined(_WIN32_WCE)) && !defined(UNICODE)
    2: #define UNICODE
    3: #endif
    4: #if defined(UNICODE) && !defined(_UNICODE)
    5: #define _UNICODE
    6: #endif
    7: #if defined(_UNICODE) && !defined(UNICODE)
    8: #define UNICODE
    9: #endif
   10: 
   11: #include <windows.h>
   12: #include <tchar.h>
   13: #include <stdio.h>
   14: #include "uplink.h"
   15: void OPENSSL_showfatal(const char *,...);
   16: 
   17: static TCHAR msg[128];
   18: 
   19: static void unimplemented (void)
   20: {   OPENSSL_showfatal (sizeof(TCHAR)==sizeof(char)?"%s\n":"%S\n",msg);
   21:     ExitProcess (1);
   22: }
   23: 
   24: void OPENSSL_Uplink (volatile void **table, int index)
   25: { static HMODULE volatile apphandle=NULL;
   26:   static void ** volatile applinktable=NULL;
   27:   int len;
   28:   void (*func)(void)=unimplemented;
   29:   HANDLE h;
   30:   void **p;
   31: 
   32:     /* Note that the below code is not MT-safe in respect to msg
   33:      * buffer, but what's the worst thing that can happen? Error
   34:      * message might be misleading or corrupted. As error condition
   35:      * is fatal and should never be risen, I accept the risk... */
   36:     /* One can argue that I should have used InterlockedExchangePointer
   37:      * or something to update static variables and table[]. Well,
   38:      * store instructions are as atomic as they can get and assigned
   39:      * values are effectively constant... So that volatile qualifier
   40:      * should be sufficient [it prohibits compiler to reorder memory
   41:      * access instructions]. */
   42:     do {
   43:         len = _stprintf (msg,_T("OPENSSL_Uplink(%p,%02X): "),table,index);
   44:         _tcscpy (msg+len,_T("unimplemented function"));
   45: 
   46:         if ((h=apphandle)==NULL)
   47:         {   if  ((h=GetModuleHandle(NULL))==NULL)
   48:             {  apphandle=(HMODULE)-1;
   49:                 _tcscpy (msg+len,_T("no host application"));
   50:                 break;
   51:             }
   52:             apphandle = h;
   53:         }
   54:         if ((h=apphandle)==(HMODULE)-1) /* revalidate */
   55:             break;
   56: 
   57:         if (applinktable==NULL)
   58:         { void**(*applink)();
   59: 
   60:             applink=(void**(*)())GetProcAddress(h,"OPENSSL_Applink");
   61:             if (applink==NULL)
   62:             {  apphandle=(HMODULE)-1;
   63:                 _tcscpy (msg+len,_T("no OPENSSL_Applink"));
   64:                 break;
   65:             }
   66:             p = (*applink)();
   67:             if (p==NULL)
   68:             {  apphandle=(HMODULE)-1;
   69:                 _tcscpy (msg+len,_T("no ApplinkTable"));
   70:                 break;
   71:             }
   72:             applinktable = p;
   73:         }
   74:         else
   75:             p = applinktable;
   76: 
   77:         if (index > (int)p[0])
   78:             break;
   79: 
   80:         if (p[index]) func = p[index];
   81:     } while (0);
   82: 
   83:     table[index] = func;
   84: }    
   85: 
   86: #if defined(_MSC_VER) && defined(_M_IX86) && !defined(OPENSSL_NO_INLINE_ASM)
   87: #define LAZY(i)         \
   88: __declspec(naked) static void lazy##i (void) {  \
   89:         _asm   push i                            \
   90:         _asm   push OFFSET OPENSSL_UplinkTable   \
   91:         _asm   call OPENSSL_Uplink               \
   92:         _asm   add  esp,8                        \
   93:         _asm   jmp  OPENSSL_UplinkTable+4*i      }
   94: 
   95: #if APPLINK_MAX>25
   96: #error "Add more stubs..."
   97: #endif
   98: /* make some in advance... */
   99: LAZY(1)  LAZY(2)  LAZY(3)  LAZY(4)  LAZY(5)
  100: LAZY(6)  LAZY(7)  LAZY(8)  LAZY(9)  LAZY(10)
  101: LAZY(11) LAZY(12) LAZY(13) LAZY(14) LAZY(15)
  102: LAZY(16) LAZY(17) LAZY(18) LAZY(19) LAZY(20)
  103: LAZY(21) LAZY(22) LAZY(23) LAZY(24) LAZY(25)
  104: void *OPENSSL_UplinkTable[] = {
  105:         (void *)APPLINK_MAX,
  106:         lazy1, lazy2, lazy3, lazy4, lazy5,
  107:         lazy6, lazy7, lazy8, lazy9, lazy10,
  108:         lazy11,lazy12,lazy13,lazy14,lazy15,
  109:         lazy16,lazy17,lazy18,lazy19,lazy20,
  110:         lazy21,lazy22,lazy23,lazy24,lazy25,
  111: };
  112: #endif
  113: 
  114: #ifdef SELFTEST
  115: main() {  UP_fprintf(UP_stdout,"hello, world!\n"); }
  116: #endif