397 lines
11 KiB
C++
397 lines
11 KiB
C++
/* autoload.cc: all dynamic load stuff.
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Copyright 2000, 2001 Red Hat, Inc.
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This file is part of Cygwin.
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This software is a copyrighted work licensed under the terms of the
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Cygwin license. Please consult the file "CYGWIN_LICENSE" for
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details. */
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#include "winsup.h"
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#include "autoload.h"
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extern "C" {
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/* This struct is unused, but it illustrates the layout of a DLL
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information block. */
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struct DLLinfo
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{
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char jmpinst[4];
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HANDLE h;
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DWORD flag;
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char name[0];
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};
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/* FIXME: This is not thread-safe! */
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__asm__ ("\n\
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msg1:\n\
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.ascii \"couldn't dynamically determine load address for '%s' (handle %p), %E\\0\"\n\
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\n\
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.align 32\n\
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noload:\n\
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popl %edx # Get the address of the information block\n\
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movl 8(%edx),%eax # Should we 'ignore' the lack\n\
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test $1,%eax # of this function?\n\
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jz 1f # Nope.\n\
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decl %eax # Yes. This is the # of bytes + 1\n\
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popl %edx # Caller's caller\n\
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addl %eax,%esp # Pop off bytes\n\
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xor %eax,%eax # Zero functional return\n\
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jmp *%edx # Return\n\
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1:\n\
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movl 4(%edx),%eax # Handle value\n\
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pushl (%eax)\n\
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leal 12(%edx),%eax # Location of name of function\n\
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push %eax\n\
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push $msg1 # The message\n\
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call ___api_fatal # Print message. Never returns\n\
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\n\
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.globl cygwin_dll_func_load\n\
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cygwin_dll_func_load:\n\
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movl (%esp),%eax # 'Return address' contains load info\n\
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addl $12,%eax # Address of name of function to load\n\
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pushl %eax # Second argument\n\
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movl -8(%eax),%eax # Address of Handle to DLL\n\
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pushl (%eax) # Handle to DLL\n\
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call _GetProcAddress@8# Load it\n\
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test %eax,%eax # Success?\n\
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jne gotit # Yes\n\
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jmp noload # Issue an error or return\n\
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gotit:\n\
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popl %ecx # Pointer to 'return address'\n\
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movb $0xe0,-1(%ecx) # Turn preceding call to a jmp *%eax\n\
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movl %eax,(%ecx) # Point dispatch to address loaded above\n\
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jmp *%eax\n\
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");
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LoadDLLinitfunc (advapi32)
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{
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HANDLE h;
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static NO_COPY LONG here = -1L;
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while (InterlockedIncrement (&here))
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{
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InterlockedDecrement (&here);
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Sleep (0);
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}
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if (advapi32_handle)
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/* nothing to do */;
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else if ((h = LoadLibrary ("advapi32.dll")) != NULL)
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advapi32_handle = h;
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else if (!advapi32_handle)
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api_fatal ("could not load advapi32.dll, %E");
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InterlockedDecrement (&here);
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return 0;
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}
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LoadDLLinitfunc (netapi32)
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{
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HANDLE h;
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static NO_COPY LONG here = -1L;
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while (InterlockedIncrement (&here))
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{
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InterlockedDecrement (&here);
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Sleep (0);
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}
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if ((h = LoadLibrary ("netapi32.dll")) != NULL)
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netapi32_handle = h;
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else if (! netapi32_handle)
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api_fatal ("could not load netapi32.dll. %d", GetLastError ());
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return 0;
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}
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LoadDLLinitfunc (ntdll)
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{
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HANDLE h;
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static NO_COPY LONG here = -1L;
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while (InterlockedIncrement (&here))
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{
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InterlockedDecrement (&here);
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Sleep (0);
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}
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if (ntdll_handle)
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/* nothing to do */;
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else if ((h = LoadLibrary ("ntdll.dll")) != NULL)
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ntdll_handle = h;
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else if (!ntdll_handle)
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api_fatal ("could not load ntdll.dll, %E");
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InterlockedDecrement (&here);
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return 0;
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}
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LoadDLLinitfunc (user32)
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{
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HANDLE h;
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static NO_COPY LONG here = -1L;
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while (InterlockedIncrement (&here))
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{
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InterlockedDecrement (&here);
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Sleep (0);
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}
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if (user32_handle)
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/* nothing to do */;
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else if ((h = LoadLibrary ("user32.dll")) != NULL)
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user32_handle = h;
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else if (!user32_handle)
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api_fatal ("could not load user32.dll, %E");
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InterlockedDecrement (&here);
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return 0; /* Already done by another thread? */
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}
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LoadDLLinitfunc (wsock32)
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{
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extern void wsock_init ();
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HANDLE h;
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if ((h = LoadLibrary ("wsock32.dll")) != NULL)
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wsock32_handle = h;
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else if (!wsock32_handle)
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api_fatal ("could not load wsock32.dll. Is TCP/IP installed?");
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else
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return 0; /* Already done by another thread? */
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if (!ws2_32_handle)
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wsock_init ();
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return 0;
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}
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LoadDLLinitfunc (ws2_32)
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{
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extern void wsock_init ();
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HANDLE h;
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if ((h = LoadLibrary ("ws2_32.dll")) == NULL)
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return 0; /* Already done or not available. */
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ws2_32_handle = h;
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if (!wsock32_handle)
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wsock_init ();
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return 0;
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}
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LoadDLLinitfunc (iphlpapi)
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{
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HANDLE h;
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static NO_COPY LONG here = -1L;
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while (InterlockedIncrement (&here))
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{
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InterlockedDecrement (&here);
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Sleep (0);
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}
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if (iphlpapi_handle)
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/* nothing to do */;
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else if ((h = LoadLibrary ("iphlpapi.dll")) != NULL)
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iphlpapi_handle = h;
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else if (!iphlpapi_handle)
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api_fatal ("could not load iphlpapi.dll, %E");
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InterlockedDecrement (&here);
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return 0;
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}
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LoadDLLinitfunc (ole32)
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{
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HANDLE h;
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static NO_COPY LONG here = -1L;
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while (InterlockedIncrement (&here))
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{
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InterlockedDecrement (&here);
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Sleep (0);
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}
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if (ole32_handle)
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/* nothing to do */;
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else if ((h = LoadLibrary ("ole32.dll")) != NULL)
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ole32_handle = h;
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else if (!ole32_handle)
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api_fatal ("could not load ole32.dll, %E");
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InterlockedDecrement (&here);
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return 0;
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}
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LoadDLLinitfunc (kernel32)
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{
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extern void wsock_init ();
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HANDLE h;
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if ((h = LoadLibrary ("kernel32.dll")) != NULL)
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kernel32_handle = h;
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else if (!kernel32_handle)
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api_fatal ("could not load wsock32.dll. Is TCP/IP installed?");
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else
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return 0; /* Already done by another thread? */
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return 0;
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}
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static void __stdcall dummy_autoload (void) __attribute__ ((unused));
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static void __stdcall
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dummy_autoload (void)
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{
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LoadDLLinit (advapi32)
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LoadDLLfunc (AddAccessAllowedAce, 16, advapi32)
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LoadDLLfunc (AddAccessDeniedAce, 16, advapi32)
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LoadDLLfunc (AddAce, 20, advapi32)
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LoadDLLfunc (AdjustTokenPrivileges, 24, advapi32)
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LoadDLLfunc (CopySid, 12, advapi32)
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LoadDLLfunc (CreateProcessAsUserA, 44, advapi32)
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LoadDLLfuncEx (CryptAcquireContextA, 20, advapi32, 1)
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LoadDLLfuncEx (CryptGenRandom, 12, advapi32, 1)
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LoadDLLfuncEx (CryptReleaseContext, 8, advapi32, 1)
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LoadDLLfunc (DeregisterEventSource, 4, advapi32)
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LoadDLLfunc (EqualSid, 8, advapi32)
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LoadDLLfunc (GetAce, 12, advapi32)
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LoadDLLfunc (GetFileSecurityA, 20, advapi32)
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LoadDLLfunc (GetLengthSid, 4, advapi32)
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LoadDLLfunc (GetSecurityDescriptorDacl, 16, advapi32)
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LoadDLLfunc (GetSecurityDescriptorGroup, 12, advapi32)
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LoadDLLfunc (GetSecurityDescriptorOwner, 12, advapi32)
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LoadDLLfunc (GetSidIdentifierAuthority, 4, advapi32)
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LoadDLLfunc (GetSidSubAuthority, 8, advapi32)
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LoadDLLfunc (GetSidSubAuthorityCount, 4, advapi32)
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LoadDLLfunc (GetTokenInformation, 20, advapi32)
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LoadDLLfunc (GetUserNameA, 8, advapi32)
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LoadDLLfunc (ImpersonateLoggedOnUser, 4, advapi32)
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LoadDLLfunc (InitializeAcl, 12, advapi32)
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LoadDLLfunc (InitializeSecurityDescriptor, 8, advapi32)
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LoadDLLfunc (InitializeSid, 12, advapi32)
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LoadDLLfunc (IsValidSid, 4, advapi32)
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LoadDLLfunc (LogonUserA, 24, advapi32)
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LoadDLLfunc (LookupAccountNameA, 28, advapi32)
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LoadDLLfunc (LookupAccountSidA, 28, advapi32)
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LoadDLLfunc (LookupPrivilegeValueA, 12, advapi32)
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LoadDLLfunc (MakeSelfRelativeSD, 12, advapi32)
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LoadDLLfunc (OpenProcessToken, 12, advapi32)
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LoadDLLfunc (RegCloseKey, 4, advapi32)
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LoadDLLfunc (RegCreateKeyExA, 36, advapi32)
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LoadDLLfunc (RegDeleteKeyA, 8, advapi32)
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LoadDLLfunc (RegDeleteValueA, 8, advapi32)
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LoadDLLfunc (RegLoadKeyA, 12, advapi32)
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LoadDLLfunc (RegEnumKeyExA, 32, advapi32)
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LoadDLLfunc (RegEnumValueA, 32, advapi32)
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LoadDLLfunc (RegOpenKeyExA, 20, advapi32)
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LoadDLLfunc (RegQueryValueExA, 24, advapi32)
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LoadDLLfunc (RegSetValueExA, 24, advapi32)
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LoadDLLfunc (RegisterEventSourceA, 8, advapi32)
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LoadDLLfunc (ReportEventA, 36, advapi32)
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LoadDLLfunc (RevertToSelf, 0, advapi32)
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LoadDLLfunc (SetKernelObjectSecurity, 12, advapi32)
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LoadDLLfunc (SetSecurityDescriptorControl, 12, advapi32)
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LoadDLLfunc (SetSecurityDescriptorDacl, 16, advapi32)
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LoadDLLfunc (SetSecurityDescriptorGroup, 12, advapi32)
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LoadDLLfunc (SetSecurityDescriptorOwner, 12, advapi32)
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LoadDLLinit (netapi32)
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LoadDLLfunc (NetWkstaUserGetInfo, 12, netapi32)
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LoadDLLfunc (NetUserGetInfo, 16, netapi32)
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LoadDLLfunc (NetApiBufferFree, 4, netapi32)
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LoadDLLinit (ntdll)
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LoadDLLfuncEx (NtMapViewOfSection, 40, ntdll, 1)
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LoadDLLfuncEx (NtOpenSection, 12, ntdll, 1)
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LoadDLLfuncEx (NtQuerySystemInformation, 16, ntdll, 1)
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LoadDLLfuncEx (NtUnmapViewOfSection, 8, ntdll, 1)
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LoadDLLfuncEx (RtlInitUnicodeString, 8, ntdll, 1)
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LoadDLLfuncEx (RtlNtStatusToDosError, 4, ntdll, 1)
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LoadDLLfuncEx (ZwQuerySystemInformation, 16, ntdll, 1)
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LoadDLLinit (user32)
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LoadDLLfunc (CharToOemA, 8, user32)
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LoadDLLfunc (CharToOemBuffA, 12, user32)
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LoadDLLfunc (CloseClipboard, 0, user32)
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LoadDLLfunc (CreateWindowExA, 48, user32)
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LoadDLLfunc (DefWindowProcA, 16, user32)
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LoadDLLfunc (DispatchMessageA, 4, user32)
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LoadDLLfunc (FindWindowA, 8, user32)
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LoadDLLfunc (GetClipboardData, 4, user32)
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LoadDLLfunc (GetKeyboardLayout, 4, user32)
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LoadDLLfunc (GetMessageA, 16, user32)
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LoadDLLfunc (GetProcessWindowStation, 0, user32)
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LoadDLLfunc (GetThreadDesktop, 4, user32)
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LoadDLLfunc (GetUserObjectInformationA, 20, user32)
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LoadDLLfunc (KillTimer, 8, user32)
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LoadDLLfunc (MessageBoxA, 16, user32)
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LoadDLLfunc (MsgWaitForMultipleObjects, 20, user32)
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LoadDLLfunc (OemToCharBuffA, 12, user32)
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LoadDLLfunc (OpenClipboard, 4, user32)
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LoadDLLfunc (PeekMessageA, 20, user32)
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LoadDLLfunc (PostMessageA, 16, user32)
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LoadDLLfunc (PostQuitMessage, 4, user32)
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LoadDLLfunc (RegisterClassA, 4, user32)
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LoadDLLfunc (SendMessageA, 16, user32)
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LoadDLLfunc (SetTimer, 16, user32)
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LoadDLLfunc (SetUserObjectSecurity, 12, user32)
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LoadDLLinit (wsock32)
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LoadDLLfunc (WSAAsyncSelect, 16, wsock32)
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LoadDLLfunc (WSACleanup, 0, wsock32)
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LoadDLLfunc (WSAGetLastError, 0, wsock32)
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LoadDLLfunc (WSASetLastError, 4, wsock32)
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LoadDLLfunc (WSAStartup, 8, wsock32)
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LoadDLLfunc (__WSAFDIsSet, 8, wsock32)
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LoadDLLfunc (accept, 12, wsock32)
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LoadDLLfunc (bind, 12, wsock32)
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LoadDLLfunc (closesocket, 4, wsock32)
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LoadDLLfunc (connect, 12, wsock32)
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LoadDLLfunc (gethostbyaddr, 12, wsock32)
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LoadDLLfunc (gethostbyname, 4, wsock32)
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LoadDLLfunc (gethostname, 8, wsock32)
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LoadDLLfunc (getpeername, 12, wsock32)
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LoadDLLfunc (getprotobyname, 4, wsock32)
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LoadDLLfunc (getprotobynumber, 4, wsock32)
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LoadDLLfunc (getservbyname, 8, wsock32)
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LoadDLLfunc (getservbyport, 8, wsock32)
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LoadDLLfunc (getsockname, 12, wsock32)
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LoadDLLfunc (getsockopt, 20, wsock32)
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LoadDLLfunc (inet_addr, 4, wsock32)
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LoadDLLfunc (inet_network, 4, wsock32)
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LoadDLLfunc (inet_ntoa, 4, wsock32)
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LoadDLLfunc (ioctlsocket, 12, wsock32)
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LoadDLLfunc (listen, 8, wsock32)
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LoadDLLfunc (rcmd, 24, wsock32)
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LoadDLLfunc (recv, 16, wsock32)
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LoadDLLfunc (recvfrom, 24, wsock32)
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LoadDLLfunc (rexec, 24, wsock32)
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LoadDLLfunc (rresvport, 4, wsock32)
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LoadDLLfunc (select, 20, wsock32)
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LoadDLLfunc (send, 16, wsock32)
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LoadDLLfunc (sendto, 24, wsock32)
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LoadDLLfunc (setsockopt, 20, wsock32)
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LoadDLLfunc (shutdown, 8, wsock32)
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LoadDLLfunc (socket, 12, wsock32)
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LoadDLLinit (ws2_32)
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LoadDLLfuncEx (WSADuplicateSocketA, 12, ws2_32, 1)
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LoadDLLfuncEx (WSASocketA, 24, ws2_32, 1)
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LoadDLLinit (iphlpapi)
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LoadDLLfuncEx (GetIfTable, 12, iphlpapi, 1)
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LoadDLLfuncEx (GetIpAddrTable, 12, iphlpapi, 1)
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LoadDLLinit (ole32)
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LoadDLLfunc (CoInitialize, 4, ole32)
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LoadDLLfunc (CoUninitialize, 0, ole32)
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LoadDLLfunc (CoCreateInstance, 20, ole32)
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LoadDLLinit (kernel32)
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LoadDLLfuncEx (SignalObjectAndWait, 16, kernel32, 1)
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}
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}
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