| 1 | /* $Id: ModuleBase.cpp,v 1.4 2000-09-02 21:08:06 bird Exp $
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| 2 | *
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| 3 | * ModuleBase - Implementetation.
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| 4 | *
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| 5 | * Copyright (c) 1999-2000 knut st. osmundsen (knut.stange.osmundsen@pmsc.no)
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| 6 | *
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| 7 | * Project Odin Software License can be found in LICENSE.TXT
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| 8 | *
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| 9 | */
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| 10 |
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| 11 | /*******************************************************************************
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| 12 | * Defined Constants And Macros *
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| 13 | *******************************************************************************/
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| 14 | #define INCL_DOSERRORS /* DOS Error codes. */
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| 15 | #ifdef RING0
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| 16 | #define INCL_NOAPI /* RING0: No apis. */
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| 17 | #else /*RING3*/
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| 18 | #define INCL_DOSFILEMGR /* RING3: DOS File api. */
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| 19 | #endif
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| 20 |
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| 21 |
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| 22 | /*******************************************************************************
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| 23 | * Header Files *
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| 24 | *******************************************************************************/
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| 25 | #include <os2.h> /* OS/2 header file. */
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| 26 |
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| 27 | #include "devSegDf.h" /* Win32k segment definitions. */
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| 28 | #include "malloc.h" /* Win32k malloc. Not C library! */
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| 29 |
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| 30 | #include <string.h> /* C library string.h. */
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| 31 | #include <stdarg.h> /* C library stdarg.h. */
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| 32 |
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| 33 | #include "vprintf.h" /* win32k printf and vprintf. Not C library! */
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| 34 | #include "dev32.h" /* 32-Bit part of the device driver. (SSToDS) */
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| 35 | #include "OS2Krnl.h" /* kernel structs. (SFN) */
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| 36 | #include "ldrCalls.h" /* ldrOpenPath and ldrlv_t. */
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| 37 | #include "modulebase.h" /* ModuleBase class definitions, ++. */
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| 38 |
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| 39 |
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| 40 | /*******************************************************************************
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| 41 | * Global Variables *
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| 42 | *******************************************************************************/
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| 43 | /**
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| 44 | * Current output message detail level; default: ModuleBase::Info, -W3.
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| 45 | */
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| 46 | ULONG ModuleBase::ulInfoLevel = ModuleBase::Info;
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| 47 |
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| 48 |
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| 49 |
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| 50 | /**
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| 51 | * Constructor - Initializes the object to init state and sets the filehandle.
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| 52 | * @param hFile System filenumber of the exectuable file.
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| 53 | * @status completely implemented.
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| 54 | * @author knut st. osmundsen
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| 55 | */
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| 56 | ModuleBase::ModuleBase(SFN hFile) : hFile(hFile), pszFilename(NULL), pszModuleName(NULL)
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| 57 | {
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| 58 | #ifdef DEBUG
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| 59 | fInitTime = TRUE;
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| 60 | #endif
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| 61 | }
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| 62 |
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| 63 |
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| 64 | /**
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| 65 | * Destructor frees all memory allocated by this object.
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| 66 | * @status completely implemented.
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| 67 | * @author knut st. osmundsen
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| 68 | */
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| 69 | ModuleBase::~ModuleBase()
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| 70 | {
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| 71 | if (pszFilename != NULL)
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| 72 | free(pszFilename);
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| 73 | if (pszModuleName != NULL)
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| 74 | free(pszModuleName);
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| 75 | #ifdef DEBUG
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| 76 | fInitTime = (BOOL)-1;
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| 77 | pszFilename = (PSZ)0xFFFFBEEF;
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| 78 | pszModuleName = (PSZ)0xFFFFBEEF;
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| 79 | #endif
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| 80 | }
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| 81 |
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| 82 |
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| 83 |
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| 84 | /**
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| 85 | * This functions sets the filename and modulename for the ModuleBase object.
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| 86 | *
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| 87 | * The children of this class should override this method and upon return of it
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| 88 | * the object should be a fully initialized virtual LX file. The object will
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| 89 | * then not be in init mode any longer (fInitTime is FALSE).
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| 90 | *
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| 91 | * @returns NO_ERROR on success.
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| 92 | * ERROR_NOT_ENOUGH_MEMORY
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| 93 | * ERROR_INTERNAL_PROCESSING_ERROR
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| 94 | * @param pszFilename Module filename.
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| 95 | * @precond Called in init-mode.
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| 96 | * @sketch DEBUG: Verify initmode.
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| 97 | * Duplicate filename.
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| 98 | * Derive the modulename from the filename.
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| 99 | * return successfully.
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| 100 | * @status Completely implemented; tested.
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| 101 | * @author knut st. osmundsen
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| 102 | * @remark The object is still in initmode when returing.
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| 103 | */
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| 104 | ULONG ModuleBase::init(PCSZ pszFilename)
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| 105 | {
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| 106 | PCSZ psz;
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| 107 | int i;
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| 108 |
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| 109 | #ifdef DEBUG
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| 110 | /* check that were called in initmode. */
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| 111 | if (!fInitTime)
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| 112 | return ERROR_INTERNAL_PROCESSING_ERROR;
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| 113 | #endif
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| 114 |
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| 115 | /* Duplicate filename. */
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| 116 | this->pszFilename = (char*)malloc(strlen(pszFilename) + 1);
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| 117 | if (this->pszFilename == NULL)
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| 118 | return ERROR_NOT_ENOUGH_MEMORY;
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| 119 | strcpy(this->pszFilename, pszFilename);
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| 120 |
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| 121 | /* Derive the modulename. */
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| 122 | if ((psz = strrchr(pszFilename, '\\') + 1) == (PCHAR)1)
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| 123 | if ((psz = strrchr(pszFilename, '/') + 1) == (PCHAR)1)
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| 124 | psz = pszFilename;
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| 125 | pszModuleName = strchr(psz, '.');
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| 126 | i = pszModuleName != NULL ? pszModuleName - psz : strlen(psz);
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| 127 | pszModuleName = (PSZ)malloc(i + 1);
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| 128 | if (pszModuleName == NULL)
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| 129 | return ERROR_NOT_ENOUGH_MEMORY;
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| 130 | strncpy(pszModuleName, psz, i);
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| 131 | pszModuleName[i] = '\0';
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| 132 |
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| 133 | /* return successfully */
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| 134 | return NO_ERROR;
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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 | /**
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| 140 | * Applies relocation fixups to a page which is being loaded.
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| 141 | * @returns NO_ERROR on success?
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| 142 | * error code on error?
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| 143 | * @param pMTE Pointer Module Table Entry.
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| 144 | * @param iObject Index into the object table. (0-based)
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| 145 | * @param iPageTable Index into the page table. (0-based)
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| 146 | * @param pvPage Pointer to the page which is being loaded.
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| 147 | * @param ulPageAddress Address of page.
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| 148 | * @param pvPTDA Pointer to Per Task Data Aera
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| 149 | * @remark Stub.
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| 150 | */
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| 151 | ULONG ModuleBase::applyFixups(PMTE pMTE, ULONG iObject, ULONG iPageTable, PVOID pvPage,
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| 152 | ULONG ulPageAddress, PVOID pvPTDA)
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| 153 | {
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| 154 | NOREF(pMTE);
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| 155 | NOREF(iObject);
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| 156 | NOREF(iPageTable);
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| 157 | NOREF(pvPage);
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| 158 | NOREF(ulPageAddress);
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| 159 | NOREF(pvPTDA);
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| 160 | return NO_ERROR;
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| 161 | }
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| 162 |
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| 163 |
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| 164 | /**
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| 165 | * openPath - opens file eventually searching loader specific paths.
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| 166 | *
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| 167 | * This base implementation simply calls ldrOpenPath.
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| 168 | * This method is only called for DLLs. DosLoadModule and Imports.
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| 169 | *
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| 170 | * @returns OS2 return code.
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| 171 | * pLdrLv->lv_sfn is set to filename handle.
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| 172 | * @param pachFilename Pointer to filename. Not zero terminated!
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| 173 | * @param cchFilename Filename length.
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| 174 | * @param pLdrLv Loader local variables? (Struct from KERNEL.SDF)
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| 175 | * @param pful Pointer to flags which are passed on to ldrOpen.
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| 176 | * @sketch
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| 177 | * This is roughly what the original ldrOpenPath does:
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| 178 | * if !CLASS_GLOBAL or miniifs then
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| 179 | * ldrOpen(pachModName)
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| 180 | * else
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| 181 | * loop until no more libpath elements
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| 182 | * get next libpath element and add it to the modname.
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| 183 | * try open the modname
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| 184 | * if successfull then break the loop.
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| 185 | * endloop
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| 186 | * endif
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| 187 | */
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| 188 | ULONG ModuleBase::openPath(PCHAR pachFilename, USHORT cchFilename, ldrlv_t *pLdrLv, PULONG pful) /* (ldrOpenPath) */
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| 189 | {
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| 190 | #ifdef RING0
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| 191 | printf("ModuleBase::openPath:\n");
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| 192 | return ldrOpenPath(pachFilename, cchFilename, pLdrLv, pful);
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| 193 | #else
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| 194 | NOREF(pachFilename);
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| 195 | NOREF(cchFilename);
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| 196 | NOREF(pLdrLv);
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| 197 | NOREF(pful);
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| 198 | return ERROR_NOT_SUPPORTED;
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| 199 | #endif
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| 200 | }
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| 201 |
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| 202 |
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| 203 | #ifndef RING0
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| 204 |
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| 205 | /**
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| 206 | * Optional method objects when in Ring-3: Write the virtual LX file to disk.
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| 207 | *
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| 208 | * A child my override this method, as this is simply a dummy stub.
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| 209 | *
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| 210 | * @returns ERROR_NOT_SUPPORTED.
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| 211 | * Children: OS/2 styled return codes with the errorcodes specified in ModuleBase.h.
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| 212 | * @param pszFilename Name of output file. This file should be overwritten if exists and created
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| 213 | * if it don't exists.
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| 214 | * @status completely implemented.
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| 215 | * @author knut st. osmundsen
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| 216 | */
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| 217 | ULONG ModuleBase::writeFile(PCSZ pszFilename)
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| 218 | {
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| 219 | pszFilename = pszFilename;
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| 220 | return ERROR_NOT_SUPPORTED;
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| 221 | }
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| 222 |
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| 223 | #endif
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| 224 |
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| 225 |
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| 226 | /**
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| 227 | * Compare a given filename/modulename with the name of this module.
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| 228 | * @returns TRUE: Matching.
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| 229 | * FALSE: Non-matching.
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| 230 | * @param pszFilename Filename/modulename to match with this module.
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| 231 | * @sketch IF filename without path THEN
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| 232 | * BEGIN
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| 233 | * IF no extention THEN
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| 234 | * compare directly with modulename
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| 235 | * ELSE
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| 236 | * compare input filename with the object filename without path.
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| 237 | * END
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| 238 | * ELSE
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| 239 | * compare input filename with the object filename
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| 240 | * return TRUE if equal : FALSE if not.
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| 241 | * @status completely implemented.
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| 242 | * @author knut st. osmundsen
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| 243 | */
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| 244 | BOOL ModuleBase::queryIsModuleName(PCSZ pszFilename)
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| 245 | {
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| 246 | #ifdef DEBUG
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| 247 | if (!fInitTime)
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| 248 | {
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| 249 | printIPE(("queryIsModuleName should not be called during init!\n"));
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| 250 | return FALSE;
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| 251 | }
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| 252 | #endif
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| 253 | if (strchr(pszFilename, '\\') == NULL && strchr(pszFilename,'/') == NULL)
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| 254 | { /* use module name - no extention */
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| 255 | if (strchr(pszFilename, '.') == NULL)
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| 256 | return stricmp(pszFilename, pszModuleName) == 0;
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| 257 | else
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| 258 | { /* extention */
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| 259 | PCSZ psz = strchr(this->pszFilename, '\\');
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| 260 | if ((psz = strchr(this->pszFilename, '/')) == NULL)
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| 261 | psz = this->pszFilename;
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| 262 | else
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| 263 | psz++; /* skip '\\' or '/' */
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| 264 | return stricmp(pszFilename, psz) == 0;
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| 265 | }
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| 266 | }
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| 267 |
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| 268 | /* TODO: relative name vs fullname. */
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| 269 | return stricmp(pszFilename, this->pszFilename) == 0;
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| 270 | }
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| 271 |
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| 272 |
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| 273 | /**
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| 274 | * Gets the fullpath filename.
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| 275 | * @returns Const ("Readonly") pointer to the filename.
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| 276 | * @author knut st. osmundsen (knut.stange.osmundsen@mynd.no)
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| 277 | */
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| 278 | PCSZ ModuleBase::getFilename()
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| 279 | {
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| 280 | return pszFilename;
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| 281 | }
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| 282 |
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| 283 |
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| 284 | /**
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| 285 | * Gets the modulename.
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| 286 | * @returns Const ("Readonly") pointer to the module name.
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| 287 | * @author knut st. osmundsen (knut.stange.osmundsen@pmsc.no)
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| 288 | * @remark Modulename is filename without path and extention.
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| 289 | */
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| 290 | PCSZ ModuleBase::getModuleName()
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| 291 | {
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| 292 | return pszModuleName;
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| 293 | }
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| 294 |
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| 295 |
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| 296 | /**
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| 297 | * Output function for Modules.
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| 298 | * @param pszFormat Pointer to format string.
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| 299 | * @status completely implemented; tested.
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| 300 | * @author knut st. osmundsen
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| 301 | */
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| 302 | VOID ModuleBase::printf(PCSZ pszFormat, ...)
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| 303 | {
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| 304 | va_list arguments;
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| 305 |
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| 306 | if (ulInfoLevel <= ModuleBase::ulInfoLevel)
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| 307 | {
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| 308 | va_start(arguments, pszFormat);
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| 309 | vprintf2(pszFormat, arguments);
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| 310 | va_end(arguments);
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| 311 | }
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| 312 | }
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| 313 |
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| 314 |
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| 315 | #ifndef RING0
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| 316 | /**
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| 317 | *
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| 318 | * @returns OS/2 return code. (NO_ERROR on success...)
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| 319 | * @param hFile Handle to file. (RING0: Handle to SystemFileNumber (SFN).)
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| 320 | * @param ulOffset Offset in the file to start reading at.
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| 321 | * @param pvBuffer Pointer to output buffer.
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| 322 | * @param cbToRead Count of bytes to read.
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| 323 | * @sketch Set Change filepointer to ulOffset.
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| 324 | * Read cbToRead into pvBufer.
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| 325 | * @status completely tested.
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| 326 | * @author knut st. osmundsen
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| 327 | * @remark
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| 328 | */
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| 329 | APIRET ReadAt(SFN hFile, ULONG ulOffset, PVOID pvBuffer, ULONG cbToRead)
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| 330 | {
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| 331 | ULONG cbRead, ulMoved;
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| 332 | APIRET rc;
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| 333 |
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| 334 | rc = DosSetFilePtr(hFile, ulOffset, FILE_BEGIN, &ulMoved);
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| 335 | if (rc == NO_ERROR)
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| 336 | rc = DosRead(hFile, pvBuffer, cbToRead, &cbRead);
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| 337 | else
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| 338 | printErr(("DosSetFilePtr(hfile, %#8x(%d),..) failed with rc = %d.\n",
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| 339 | ulOffset, ulOffset, rc));
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| 340 |
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| 341 | return rc;
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| 342 | }
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| 343 | #endif
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| 344 |
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