1 files changed, 116 insertions, 0 deletions
diff --git a/openssl/ms/uplink.c b/openssl/ms/uplink.c
new file mode 100644
index 000000000..7b7da08d4
--- /dev/null
+++ b/openssl/ms/uplink.c
@@ -0,0 +1,116 @@
+#if (defined(_WIN64) || defined(_WIN32_WCE)) && !defined(UNICODE)
+#define UNICODE
+#endif
+#if defined(UNICODE) && !defined(_UNICODE)
+#define _UNICODE
+#endif
+#if defined(_UNICODE) && !defined(UNICODE)
+#define UNICODE
+#endif
+
+#include <windows.h>
+#include <tchar.h>
+#include <stdio.h>
+#include "uplink.h"
+void OPENSSL_showfatal(const char *,...);
+
+static TCHAR msg[128];
+
+static void unimplemented (void)
+{   OPENSSL_showfatal (sizeof(TCHAR)==sizeof(char)?"%s\n":"%S\n",msg);
+    ExitProcess (1);
+}
+
+void OPENSSL_Uplink (volatile void **table, int index)
+{ static HMODULE volatile apphandle=NULL;
+  static void ** volatile applinktable=NULL;
+  int len;
+  void (*func)(void)=unimplemented;
+  HANDLE h;
+  void **p;
+
+    /* Note that the below code is not MT-safe in respect to msg
+     * buffer, but what's the worst thing that can happen? Error
+     * message might be misleading or corrupted. As error condition
+     * is fatal and should never be risen, I accept the risk... */
+    /* One can argue that I should have used InterlockedExchangePointer
+     * or something to update static variables and table[]. Well,
+     * store instructions are as atomic as they can get and assigned
+     * values are effectively constant... So that volatile qualifier
+     * should be sufficient [it prohibits compiler to reorder memory
+     * access instructions]. */
+    do {
+	len = _stprintf (msg,_T("OPENSSL_Uplink(%p,%02X): "),table,index);
+	_tcscpy (msg+len,_T("unimplemented function"));
+
+	if ((h=apphandle)==NULL)
+	{   if  ((h=GetModuleHandle(NULL))==NULL)
+	    {	apphandle=(HMODULE)-1;
+		_tcscpy (msg+len,_T("no host application"));
+		break;
+	    }
+	    apphandle = h;
+	}
+	if ((h=apphandle)==(HMODULE)-1) /* revalidate */
+	    break;
+
+	if (applinktable==NULL)
+	{ void**(*applink)();
+
+	    applink=(void**(*)())GetProcAddress(h,"OPENSSL_Applink");
+	    if (applink==NULL)
+	    {	apphandle=(HMODULE)-1;
+		_tcscpy (msg+len,_T("no OPENSSL_Applink"));
+		break;
+	    }
+	    p = (*applink)();
+	    if (p==NULL)
+	    {	apphandle=(HMODULE)-1;
+		_tcscpy (msg+len,_T("no ApplinkTable"));
+		break;
+	    }
+	    applinktable = p;
+	}
+	else
+	    p = applinktable;
+
+	if (index > (int)p[0])
+	    break;
+
+	if (p[index]) func = p[index];
+    } while (0);
+
+    table[index] = func;
+}    
+
+#if defined(_MSC_VER) && defined(_M_IX86) && !defined(OPENSSL_NO_INLINE_ASM)
+#define LAZY(i)		\
+__declspec(naked) static void lazy##i (void) { 	\
+	_asm	push i				\
+	_asm	push OFFSET OPENSSL_UplinkTable	\
+	_asm	call OPENSSL_Uplink		\
+	_asm	add  esp,8			\
+	_asm	jmp  OPENSSL_UplinkTable+4*i	}
+
+#if APPLINK_MAX>25
+#error "Add more stubs..."
+#endif
+/* make some in advance... */
+LAZY(1)  LAZY(2)  LAZY(3)  LAZY(4)  LAZY(5)
+LAZY(6)  LAZY(7)  LAZY(8)  LAZY(9)  LAZY(10)
+LAZY(11) LAZY(12) LAZY(13) LAZY(14) LAZY(15)
+LAZY(16) LAZY(17) LAZY(18) LAZY(19) LAZY(20)
+LAZY(21) LAZY(22) LAZY(23) LAZY(24) LAZY(25)
+void *OPENSSL_UplinkTable[] = {
+	(void *)APPLINK_MAX,
+	lazy1, lazy2, lazy3, lazy4, lazy5,
+	lazy6, lazy7, lazy8, lazy9, lazy10,
+	lazy11,lazy12,lazy13,lazy14,lazy15,
+	lazy16,lazy17,lazy18,lazy19,lazy20,
+	lazy21,lazy22,lazy23,lazy24,lazy25,
+};
+#endif
+
+#ifdef SELFTEST
+main() {  UP_fprintf(UP_stdout,"hello, world!\n"); }
+#endif