1 | /* $Id: windll.cpp,v 1.6 1999-06-20 17:54:53 sandervl Exp $ */
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2 |
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3 | /*
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4 | * Win32 DLL class
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5 | *
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6 | * Copyright 1998 Sander van Leeuwen (sandervl@xs4all.nl)
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7 | *
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8 | *
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9 | * Project Odin Software License can be found in LICENSE.TXT
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10 | *
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11 | */
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12 | #define INCL_DOSFILEMGR /* File Manager values */
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13 | #define INCL_DOSERRORS /* DOS Error values */
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14 | #define INCL_DOSPROCESS /* DOS Process values */
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15 | #define INCL_DOSMODULEMGR
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16 | #define INCL_DOSMISC /* DOS Miscellanous values */
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17 | #define INCL_WIN
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18 | #include <os2wrap.h> //Odin32 OS/2 api wrappers
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19 | #include <stdio.h>
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20 | #include <string.h>
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21 | #include <stdlib.h>
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22 | #include <iostream.h>
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23 | #include <fstream.h>
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24 | #include "misc.h"
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25 | #include "nameid.h"
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26 | #include "win32type.h"
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27 | #include "pefile.h"
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28 | #include "windll.h"
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29 | #include "cio.h"
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30 | #include "os2util.h"
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31 |
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32 | /***********************************
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33 | * PH: fixups for missing os2win.h *
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34 | ***********************************/
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35 |
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36 | void _System SetLastError(ULONG ulError);
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37 |
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38 | //******************************************************************************
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39 | //******************************************************************************
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40 | Win32Dll::Win32Dll(char *szDllName) : Win32Image(szDllName), referenced(0),
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41 | fSkipEntryCalls(FALSE), fSystemDll(FALSE)
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42 | {
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43 | fSystemDll = isSystemDll(szFileName);
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44 | fUnloaded = FALSE;
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45 | next = head;
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46 | head = this;
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47 |
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48 | strcpy(szModule, StripPath(szFileName));
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49 | UpCase(szModule);
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50 | char *dot = strstr(szModule, ".");
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51 | while(dot) {
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52 | char *newdot = strstr(dot+1, ".");
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53 | if(newdot == NULL) break;
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54 | dot = newdot;
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55 | }
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56 | if(dot)
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57 | *dot = 0;
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58 | dprintf(("Win32Dll::Win32Dll %s %s", szFileName, szModule));
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59 | }
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60 | //******************************************************************************
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61 | //******************************************************************************
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62 | Win32Dll::Win32Dll(HINSTANCE hinstance, int NameTableId, int Win32TableId,
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63 | WIN32DLLENTRY DllEntryPoint) :
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64 | Win32Image(hinstance, NameTableId, Win32TableId),
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65 | referenced(0), fSkipEntryCalls(FALSE), fSystemDll(FALSE)
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66 | {
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67 | dllEntryPoint = DllEntryPoint;
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68 | fUnloaded = FALSE;
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69 | next = head;
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70 | head = this;
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71 |
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72 | char *name = OS2GetDllName(hinstance);
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73 | strcpy(szModule, name);
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74 | UpCase(szModule);
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75 | char *dot = strstr(szModule, ".");
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76 | while(dot) {
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77 | char *newdot = strstr(dot+1, ".");
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78 | if(newdot == NULL) break;
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79 | dot = newdot;
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80 | }
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81 | if(dot)
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82 | *dot = 0;
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83 |
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84 | dprintf(("Win32Dll::Win32Dll %s", szModule));
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85 | }
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86 | //******************************************************************************
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87 | //******************************************************************************
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88 | void Win32Dll::OS2DllInit(HINSTANCE hinstance, int NameTableId, int Win32TableId,
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89 | WIN32DLLENTRY DllEntryPoint)
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90 | {
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91 | dllEntryPoint = DllEntryPoint;
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92 | fUnloaded = FALSE;
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93 |
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94 | char *name = OS2GetDllName(hinstance);
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95 | strcpy(szModule, name);
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96 | UpCase(szModule);
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97 | char *dot = strstr(szModule, ".");
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98 | while(dot) {
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99 | char *newdot = strstr(dot+1, ".");
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100 | if(newdot == NULL) break;
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101 | dot = newdot;
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102 | }
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103 | if(dot)
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104 | *dot = 0;
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105 |
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106 | Win32Image::OS2ImageInit(hinstance, NameTableId, Win32TableId);
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107 | }
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108 | //******************************************************************************
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109 | //******************************************************************************
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110 | Win32Dll::~Win32Dll()
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111 | {
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112 | Win32Dll *dll = head;
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113 |
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114 | dprintf(("Win32Dll::~Win32Dll %s", szModule));
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115 |
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116 | //first remove it from the linked list so converted win32 dlls won't
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117 | //be deleted twice (as DosFreeModule results in a call to DllExitList (wprocess.cpp)
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118 | if(head == this) {
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119 | head = next;
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120 | }
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121 | else {
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122 | while(dll && dll->next != this) {
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123 | dll = dll->next;
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124 | }
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125 | if(dll == NULL) {
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126 | dprintf(("~Win32Dll: Can't find dll!\n"));
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127 | return;
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128 | }
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129 | dll->next = next;
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130 | }
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131 | if(errorState == NO_ERROR && !fUnloaded)
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132 | {
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133 | if(!fSystemDll) {
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134 | detachProcess();
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135 | }
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136 | }
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137 | }
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138 | //******************************************************************************
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139 | //ASSUMPTION: called by FreeLibrary
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140 | //******************************************************************************
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141 | ULONG Win32Dll::Release()
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142 | {
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143 | ULONG ret = --referenced;
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144 |
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145 | if(ret == 0) {
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146 | dprintf(("Win32Dll::Release, referenced == 0\n"));
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147 | if(fSystemDll) {
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148 | DosFreeModule((HMODULE)hinstance);
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149 | fUnloaded = TRUE;
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150 | }
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151 | delete this;
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152 | }
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153 | return(ret);
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154 | }
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155 | //******************************************************************************
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156 | //******************************************************************************
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157 | BOOL Win32Dll::init()
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158 | {
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159 | char *syspath;
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160 | FILE *dllfile;
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161 | APIRET rc;
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162 | BOOL fRet;
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163 |
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164 | if(fSystemDll == FALSE && fNativePEImage == TRUE)
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165 | {//might be win32 dll, so check this
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166 | dllfile = fopen(szFileName, "r");
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167 | if(dllfile == NULL) {//search in libpath for dll
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168 | syspath = getenv("WIN32LIBPATH");
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169 | if(syspath) {
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170 | strcpy(szModule, syspath);
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171 | if(szModule[strlen(szModule)-1] != '\\') {
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172 | strcat(szModule, "\\");
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173 | }
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174 | strcat(szModule, szFileName);
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175 | szFileName = szModule;
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176 | }
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177 | }
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178 | else fclose(dllfile);
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179 | if(isPEImage(szFileName) == TRUE) {
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180 | fRet = Win32Image::init();
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181 | dllEntryPoint = (WIN32DLLENTRY)entryPoint;
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182 | return fRet;
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183 | }
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184 | //converted win32 dll
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185 | fNativePEImage = FALSE;
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186 | }
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187 | //else load system dlls using DosLoadModule
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188 | char szModuleFailure[CCHMAXPATH] = "";
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189 |
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190 | rc = DosLoadModule(szModuleFailure, sizeof(szModuleFailure), szFileName, (HMODULE *)&hinstance);
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191 | if(rc) {
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192 | dprintf(("DosLoadModule returned %X for %s\n", rc, szModuleFailure));
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193 | errorState = rc;
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194 | return(FALSE);
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195 | }
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196 | return(TRUE);
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197 | }
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198 | //******************************************************************************
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199 | char *sysmodules[] = {"KERNEL32", "USER32", "GDI32", "WINMM", "DSOUND", "DDRAW",
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200 | "WNETAP32", "MPR", "OLE32", "ADVAPI32", "COMDLG32",
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201 | "WINSPOOL", "SHELL32", "TAPI32", "CAPI32", "VERSION",
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202 | "WSOCK32", "COMCTL32", "NTDLL"};
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203 | //******************************************************************************
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204 | BOOL Win32Dll::isSystemDll(char *szFileName)
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205 | {
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206 | int i;
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207 | char *dot;
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208 | char szModule[CCHMAXPATH];
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209 |
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210 | strcpy(szModule, szFileName);
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211 | UpCase(szModule);
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212 | dot = strstr(szModule, ".");
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213 | if(dot)
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214 | *dot = 0;
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215 |
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216 | for(i=0;i<sizeof(sysmodules)/sizeof(char *);i++) {
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217 | if(!strcmp(szModule, sysmodules[i]))
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218 | return(TRUE);
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219 | }
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220 | return(FALSE);
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221 | }
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222 | //******************************************************************************
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223 | //Could be more efficient, but I bet this is faster than the OS/2 loader!
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224 | //******************************************************************************
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225 | ULONG Win32Dll::getApi(char *name)
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226 | {
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227 | APIRET rc;
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228 | ULONG apiaddr, i, apilen;
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229 | char *apiname;
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230 | char tmp[4];
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231 | NameExport *curexport;
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232 | ULONG ulAPIOrdinal; /* api requested by ordinal */
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233 |
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234 | apilen = strlen(name) + 1;
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235 | if(apilen < 4)
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236 | {
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237 | *(ULONG *)tmp = 0;
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238 | strcpy(tmp, name);
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239 | apiname = tmp;
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240 | }
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241 | else apiname = name;
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242 |
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243 | curexport = nameexports;
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244 | for(i=0;
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245 | i<nrNameExports;
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246 | i++)
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247 | {
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248 | if(apilen == curexport->nlength &&
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249 | *(ULONG *)curexport->name == *(ULONG *)name)
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250 | {
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251 | if(strcmp(curexport->name, name) == 0)
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252 | return(curexport->virtaddr);
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253 | }
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254 | curexport = (NameExport *)((ULONG)curexport->name + curexport->nlength);
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255 | }
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256 |
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257 | if(fSystemDll || !fNativePEImage)
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258 | {
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259 | rc = DosQueryProcAddr(hinstance, 0, name, (PFN *)&apiaddr);
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260 | if(rc)
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261 | {
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262 | SetLastError(rc); /* raise error condition */
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263 | return(0);
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264 | }
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265 |
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266 | //Add to lookup table, so we don't have to call DosQueryProcAddr
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267 | //multiple times for the same api (when imported by other dlls)
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268 | AddNameExport(apiaddr, name, 0);
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269 | return(apiaddr);
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270 | }
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271 | return(0);
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272 | }
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273 | //******************************************************************************
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274 | //******************************************************************************
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275 | ULONG Win32Dll::getApi(int ordinal)
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276 | {
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277 | APIRET rc;
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278 | ULONG apiaddr, i;
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279 | OrdExport *curexport;
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280 | NameExport *nexport;
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281 |
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282 | if(fSystemDll || !fNativePEImage) {
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283 | rc = DosQueryProcAddr(hinstance, ordinal, NULL, (PFN *)&apiaddr);
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284 | if(rc) return(0);
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285 | else return(apiaddr);
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286 | }
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287 | curexport = ordexports;
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288 | for(i=0;i<nrOrdExports;i++) {
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289 | if(curexport->ordinal == ordinal)
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290 | return(curexport->virtaddr);
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291 | curexport++;
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292 | }
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293 | //Name exports also contain an ordinal, so check this
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294 | nexport = nameexports;
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295 | for(i=0;i<nrNameExports;i++) {
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296 | if(nexport->ordinal == ordinal)
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297 | return(nexport->virtaddr);
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298 | nexport = (NameExport *)((ULONG)nexport->name + nexport->nlength);
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299 | }
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300 | return(0);
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301 | }
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302 | //******************************************************************************
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303 | //******************************************************************************
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304 | BOOL Win32Dll::attachProcess()
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305 | {
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306 | if(fSystemDll || fSkipEntryCalls || !fNativePEImage)
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307 | return(TRUE);
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308 |
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309 | if(getenv("WIN32_IOPL2")) {
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310 | io_init1();
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311 | }
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312 | return dllEntryPoint((ULONG)this, DLL_PROCESS_ATTACH, 0);
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313 | }
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314 | //******************************************************************************
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315 | //******************************************************************************
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316 | BOOL Win32Dll::detachProcess()
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317 | {
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318 | if(fSystemDll || fSkipEntryCalls)
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319 | return(TRUE);
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320 |
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321 | if(fNativePEImage)
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322 | return dllEntryPoint((ULONG)this, DLL_PROCESS_DETACH, 0);
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323 | else return dllEntryPoint((ULONG)this, DLL_PROCESS_ATTACH, 0); //reversed in converted code
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324 | }
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325 | //******************************************************************************
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326 | //******************************************************************************
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327 | BOOL Win32Dll::attachThread()
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328 | {
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329 | if(fSystemDll || fSkipEntryCalls)
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330 | return(TRUE);
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331 |
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332 | return dllEntryPoint((ULONG)this, DLL_THREAD_ATTACH, 0);
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333 | }
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334 | //******************************************************************************
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335 | //******************************************************************************
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336 | BOOL Win32Dll::detachThread()
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337 | {
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338 | if(fSystemDll || fSkipEntryCalls)
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339 | return(TRUE);
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340 |
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341 | return dllEntryPoint((ULONG)this, DLL_THREAD_DETACH, 0);
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342 | }
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343 | //******************************************************************************
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344 | //******************************************************************************
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345 | void Win32Dll::deleteAll()
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346 | {
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347 | //LIFO removal
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348 | while(Win32Dll::head) {
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349 | delete Win32Dll::head;
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350 | }
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351 | }
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352 | //******************************************************************************
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353 | //******************************************************************************
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354 | Win32Dll *Win32Dll::findModule(char *dllname)
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355 | {
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356 | Win32Dll *dll = head;
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357 | char szDllName[CCHMAXPATH];
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358 | char *dot;
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359 |
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360 | dprintf(("findModule %s", dllname));
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361 | strcpy(szDllName, dllname);
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362 | UpCase(szDllName);
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363 | dot = strstr(szDllName, ".");
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364 | if(dot)
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365 | *dot = 0;
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366 |
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367 | while(dll) {
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368 | if(strcmpi(szDllName, dll->szModule) == 0)
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369 | return(dll);
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370 |
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371 | dll = dll->next;
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372 | }
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373 | return(NULL);
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374 | }
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375 | //******************************************************************************
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376 | //******************************************************************************
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377 | Win32Dll *Win32Dll::findModule(WIN32DLLENTRY DllEntryPoint)
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378 | {
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379 | Win32Dll *mod = Win32Dll::head;
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380 |
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381 | dprintf(("findModule %X", DllEntryPoint));
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382 | while(mod != NULL) {
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383 | dbgCheckObj(mod);
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384 | if(mod->dllEntryPoint == DllEntryPoint)
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385 | return(mod);
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386 | mod = mod->next;
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387 | }
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388 | return(NULL);
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389 | }
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390 | //******************************************************************************
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391 | //******************************************************************************
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392 | Win32Dll *Win32Dll::findModule(HINSTANCE hinstance)
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393 | {
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394 | Win32Dll *mod = Win32Dll::head;
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395 |
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396 | // eprintf(("findModule inst %X", hinstance));
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397 | while(mod != NULL) {
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398 | dbgCheckObj(mod);
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399 | if(mod->hinstance == hinstance)
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400 | return(mod);
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401 | mod = mod->next;
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402 | }
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403 | return(NULL);
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404 | }
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405 | //******************************************************************************
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406 | //******************************************************************************
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407 | char *Win32Dll::StripPath(char *path)
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408 | {
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409 | /* @@@PH what does this function do ? Strip the path from a FQFN name ? */
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410 | char *pszFilename;
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411 |
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412 | pszFilename = strrchr(path, '\\'); /* find rightmost slash */
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413 | if (pszFilename != NULL)
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414 | return (pszFilename++); /* return pointer to next character */
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415 |
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416 | pszFilename = strrchr(path, '/'); /* find rightmost slash */
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417 | if (pszFilename != NULL)
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418 | return (pszFilename++); /* return pointer to next character */
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419 |
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420 | return (path); /* default return value */
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421 |
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422 | #if 0
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423 | char *fname = path, *prevname = path-1;
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424 |
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425 | while(TRUE)
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426 | {
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427 | @@@PH causes endless loop here !
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428 | fname = strchr(fname, '\\');
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429 | if(fname == NULL)
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430 | break;
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431 |
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432 | prevname = fname;
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433 | }
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434 | return(prevname+1);
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435 | #endif
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436 | }
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437 | /******************************************************************************/
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438 | /******************************************************************************/
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439 | Win32Dll *Win32Dll::head = NULL;
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