ms/uplink.c

   1 #if defined(_WIN64) && !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 #if defined(_MSC_VER) && !defined(_WIN32_WINNT)
  11 #define _WIN32_WINNT 0x0333     /* 3.51 */
  12 #endif
  13
  14 #include <windows.h>
  15 #include <tchar.h>
  16 #include <stdio.h>
  17 #include <malloc.h>
  18 #include "uplink.h"
  19
  20 #ifdef _MSC_VER
  21 #pragma comment(lib,"delayimp")
  22 /*
  23  * CL command line should also be complemented with following:
  24  *
  25  *      /link /delayload:advapi32.dll /delayload:user32.dll
  26  *
  27  * This is required if/as we want to support Win9x. With delayloaded
  28  * DLLs in question all we have to do is to make sure NT-specific
  29  * functions are not actually called under Win9x.
  30  */
  31 #endif
  32
  33 #if defined(_WIN32_WINNT) && _WIN32_WINNT>=0x0333
  34 int IsService()
  35 { HWINSTA h;
  36   DWORD len;
  37   WCHAR *name;
  38
  39     GetDesktopWindow(); /* return value is ignored */
  40
  41     h = GetProcessWindowStation();
  42     if (h==NULL) return -1;
  43
  44     if (GetUserObjectInformationW (h,UOI_NAME,NULL,0,&len) ||
  45         GetLastError() != ERROR_INSUFFICIENT_BUFFER)
  46         return -1;
  47
  48     if (len>512) return -1;             /* paranoia */
  49     len++,len&=~1;                      /* paranoia */
  50 #ifdef _MSC_VER
  51     name=(WCHAR *)_alloca(len+sizeof(WCHAR));
  52 #else
  53     name=(WCHAR *)alloca(len+sizeof(WCHAR));
  54 #endif
  55     if (!GetUserObjectInformationW (h,UOI_NAME,name,len,&len))
  56         return -1;
  57
  58     len++,len&=~1;                      /* paranoia */
  59     name[len/sizeof(WCHAR)]=L'\0';      /* paranoia */
  60 #if 1
  61     /* This doesn't cover "interactive" services [working with real
  62      * WinSta0's] nor programs started non-interactively by Task
  63      * Scheduler [those are working with SAWinSta]. */
  64     if (wcsstr(name,L"Service-0x"))     return 1;
  65 #else
  66     /* This covers all non-interactive programs such as services. */
  67     if (!wcsstr(name,L"WinSta0"))       return 1;
  68 #endif
  69     else                                return 0;
  70 }
  71 #endif
  72
  73 static TCHAR msg[128];
  74
  75 static void unimplemented ()
  76 {
  77 #if defined(_WIN32_WINNT) && _WIN32_WINNT>=0x0333
  78     /* this -------------v--- guards NT-specific calls */
  79     if (GetVersion() < 0x80000000 && IsService())
  80     {   HANDLE h = RegisterEventSource(0,_T("OPENSSL"));
  81         TCHAR *pmsg=msg;
  82         ReportEvent(h,EVENTLOG_ERROR_TYPE,0,0,0,1,0,&pmsg,0);
  83         DeregisterEventSource(h);
  84     }
  85     else
  86 #endif
  87     {   MSGBOXPARAMS         m;
  88
  89         m.cbSize             = sizeof(m);
  90         m.hwndOwner          = NULL;
  91         m.lpszCaption        = _T("OpenSSL: FATAL");
  92         m.dwStyle            = MB_OK;
  93         m.hInstance          = NULL;
  94         m.lpszIcon           = IDI_ERROR;
  95         m.dwContextHelpId    = 0;
  96         m.lpfnMsgBoxCallback = NULL;
  97         m.dwLanguageId       = MAKELANGID(LANG_ENGLISH,SUBLANG_ENGLISH_US);
  98         m.lpszText           = msg;
  99
 100         MessageBoxIndirect (&m);
 101     }
 102     ExitProcess (1);
 103 }
 104
 105 void OPENSSL_Uplink (void **table, int index)
 106 { static HMODULE app=NULL;
 107   static void **applinktable=NULL;
 108   int len;
 109
 110     len = _stprintf (msg,_T("OPENSSL_Uplink(%p,%02X): "),table,index);
 111     _tcscpy (msg+len,_T("unimplemented function"));
 112     table [index] = unimplemented;
 113
 114     if (app==NULL && (app=GetModuleHandle(NULL))==NULL)
 115     {   app=(HMODULE)-1; _tcscpy (msg+len,_T("no host application"));
 116         return;
 117     }
 118     else if (app==(HMODULE)-1)  { return; }
 119
 120     if (applinktable==NULL)
 121     { void**(*applink)();
 122
 123         applink=(void**(*)())GetProcAddress(app,"OPENSSL_Applink");
 124         if (applink==NULL)
 125         {   app=(HMODULE)-1; _tcscpy (msg+len,_T("no OPENSSL_Applink"));
 126             return;
 127         }
 128         applinktable = (*applink)();
 129         if (applinktable==NULL)
 130         {   app=(HMODULE)-1; _tcscpy (msg+len,_T("no ApplinkTable"));
 131             return;
 132         }
 133     }
 134
 135     if (index > (int)applinktable[0])   { return; }
 136
 137     if (applinktable[index]) table[index] = applinktable[index];
 138 }
 139
 140 #if defined(_MSC_VER) && defined(_M_IX86)
 141 #define LAZY(i)         \
 142 __declspec(naked) static void lazy##i () {      \
 143         _asm    push i                          \
 144         _asm    push OFFSET OPENSSL_UplinkTable \
 145         _asm    call OPENSSL_Uplink             \
 146         _asm    add  esp,8                      \
 147         _asm    jmp  OPENSSL_UplinkTable+4*i    }
 148
 149 #if APPLINK_MAX>20
 150 #error "Add more stubs..."
 151 #endif
 152 /* make some in advance... */
 153 LAZY(1)  LAZY(2)  LAZY(3)  LAZY(4)  LAZY(5)
 154 LAZY(6)  LAZY(7)  LAZY(8)  LAZY(9)  LAZY(10)
 155 LAZY(11) LAZY(12) LAZY(13) LAZY(14) LAZY(15)
 156 LAZY(16) LAZY(17) LAZY(18) LAZY(19) LAZY(20)
 157 void *OPENSSL_UplinkTable[] = {
 158         (void *)APPLINK_MAX,
 159         lazy1, lazy2, lazy3, lazy4, lazy5,
 160         lazy6, lazy7, lazy8, lazy9, lazy10,
 161         lazy11,lazy12,lazy13,lazy14,lazy15,
 162         lazy16,lazy17,lazy18,lazy19,lazy20,
 163 };
 164 #endif
 165
 166 #ifdef SELFTEST
 167 main() {  UP_fprintf(UP_stdout,"hello, world!\n"); }
 168 #endif