os/kernelhwsrv/kerneltest/e32utils/setcap/setcap.cpp
author sl@SLION-WIN7.fritz.box
Fri, 15 Jun 2012 03:10:57 +0200
changeset 0 bde4ae8d615e
permissions -rw-r--r--
First public contribution.
     1 // Copyright (c) 1998-2009 Nokia Corporation and/or its subsidiary(-ies).
     2 // All rights reserved.
     3 // This component and the accompanying materials are made available
     4 // under the terms of the License "Eclipse Public License v1.0"
     5 // which accompanies this distribution, and is available
     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".
     7 //
     8 // Initial Contributors:
     9 // Nokia Corporation - initial contribution.
    10 //
    11 // Contributors:
    12 //
    13 // Description:
    14 // e32utils\setcap\setcap.cpp
    15 // 
    16 //
    17 
    18 #include "setcap.h"
    19 
    20 #include <e32std.h>
    21 #include <e32std_private.h>
    22 
    23 GLDEF_D TBool CapabilitySet;
    24 GLDEF_D SCapabilitySet Capability;
    25 GLDEF_D TBool SecureIdSet;
    26 GLDEF_D TSecureId SecureId;
    27 GLDEF_D TBool VendorIdSet;
    28 GLDEF_D TVendorId VendorId;
    29 
    30 #ifdef __TOOLS__
    31 #define		Mem		HMem
    32 #include "h_utl.h"
    33 #endif //__TOOLS__
    34 
    35 #ifndef __EPOC32__
    36 
    37 GLDEF_C TInt SetCap(HANDLE hFile)
    38 	{
    39 	DWORD ret;
    40 	TText8 checkedUidBuf[sizeof(TCheckedUid)];
    41 	ReadFile(hFile,checkedUidBuf,sizeof(TCheckedUid),&ret,NULL);
    42 	if (ret!=sizeof(TCheckedUid))
    43 		goto close;
    44 
    45 	//Look at PE file for UID section
    46 	{
    47 	const TInt KPeHeaderAddrAddr=0x3c;
    48 	const TInt KPeHeaderAddrSize=0x01;
    49 	const TInt KNumberOfSectionsOffset=0x06;
    50 	const TInt KNumberOfSectionsSize=0x02;
    51 	const TInt KSectionTableOffset=0xf8;
    52 	const TInt KSectionHeaderSize=0x28;
    53 	const TInt KSectionNameLength=0x08;
    54 	const TInt KPtrToRawDataOffset=0x14;
    55 	const TInt KPtrToRawDataSize=0x04;
    56 	const TText8 peText[4]={'P','E',0,0};
    57 	const TText8 uidText[8]={'.','S','Y','M','B','I','A','N'};
    58 		
    59 	//Read address of start of PE header
    60 	if (SetFilePointer(hFile,KPeHeaderAddrAddr,0,FILE_BEGIN)==0xFFFFFFFF)
    61 		goto close;
    62 	TInt peAddr=0;
    63 	ReadFile(hFile,&peAddr,KPeHeaderAddrSize,&ret,NULL);
    64 	if (ret!=KPeHeaderAddrSize)
    65 		goto close;
    66 		
    67 	//Check it really is the start of PE header
    68 	if (SetFilePointer(hFile,peAddr,0,FILE_BEGIN)==0xFFFFFFFF)
    69 		goto close;
    70 	TText8 text[4];
    71 	ReadFile(hFile,text,4,&ret,NULL);
    72 	if (*(TInt32*)text!=*(TInt32*)peText)
    73 		goto close;
    74 		
    75 	//Read number of sections
    76 	if (SetFilePointer(hFile,peAddr+KNumberOfSectionsOffset,0,FILE_BEGIN)==0xFFFFFFFF)
    77 		goto close;
    78 	TInt sections=0;
    79 	ReadFile(hFile,&sections,KNumberOfSectionsSize,&ret,NULL);
    80 	if (ret!=KNumberOfSectionsSize)
    81 		goto close;
    82 
    83 	//Go through section headers looking for UID section
    84 	if (SetFilePointer(hFile,peAddr+KSectionTableOffset,0,FILE_BEGIN)==0xFFFFFFFF)
    85 		goto close;
    86 	TInt i=0;
    87 	for(;i<sections;i++)
    88 		{
    89 		TText8 name[KSectionNameLength];
    90 		ReadFile(hFile,name,KSectionNameLength,&ret,NULL);
    91 		if (ret!=KSectionNameLength)
    92 			goto close;
    93 		if (*(TInt64*)name==*(TInt64*)uidText)
    94 			break;
    95 		if (SetFilePointer(hFile,KSectionHeaderSize-KSectionNameLength,0,FILE_CURRENT)==0xFFFFFFFF)
    96 			goto close;
    97 		}
    98 	if (i==sections)
    99 		goto close;
   100 
   101 	//Read RVA/Offset
   102 	if (SetFilePointer(hFile,KPtrToRawDataOffset-KSectionNameLength,0,FILE_CURRENT)==0xFFFFFFFF)
   103 		goto close;
   104 	TInt uidOffset;
   105 	ReadFile(hFile,&uidOffset,KPtrToRawDataSize,&ret,NULL);
   106 	if (ret!=KPtrToRawDataSize)
   107 		goto close;
   108 
   109 	//SYMBIAN Header
   110 	if (SetFilePointer(hFile,uidOffset,0,FILE_BEGIN)==0xFFFFFFFF)
   111 		goto close;
   112 
   113 	TEmulatorImageHeader header;
   114 
   115 	ReadFile(hFile,&header,sizeof(header),&ret,NULL);
   116 	if (ret!=sizeof(header))
   117 		goto close;
   118 
   119 	// set new capabilities
   120 	if (CapabilitySet)
   121 		{
   122 		header.iS.iCaps = Capability;
   123 		}
   124 
   125 	// set new secure id and vendor id if specified
   126 	if (SecureIdSet)
   127 		{
   128 		header.iS.iSecureId = SecureId.iId;
   129 		}
   130 	if (VendorIdSet)
   131 		{
   132 		header.iS.iVendorId = VendorId.iId;
   133 		}
   134 
   135 	// save header values
   136 	Capability = header.iS.iCaps;
   137 	SecureId.iId = header.iS.iSecureId;
   138 	VendorId.iId = header.iS.iVendorId;
   139 
   140 	if (SetFilePointer(hFile,uidOffset,0,FILE_BEGIN)==0xFFFFFFFF)
   141 		goto close;
   142 
   143 	BOOL b = WriteFile(hFile,&header,sizeof(header),&ret,NULL);
   144 	if (b==FALSE)
   145 		goto close;
   146 
   147 	CloseHandle(hFile);
   148 	return KErrNone;
   149 	}
   150 close:
   151 	CloseHandle(hFile);
   152 	return KErrGeneral;
   153 	}
   154 
   155 #endif //__EPOC32__
   156 
   157 #ifndef __WINS__
   158 
   159 GLDEF_C TInt SetCap(E32ImageHeader* h)
   160 	{
   161 	TUint hdrfmt = h->HeaderFormat();
   162 	if (hdrfmt < KImageHdrFmt_V)
   163 		return KErrNotSupported;
   164 	E32ImageHeaderV* v = (E32ImageHeaderV*)h;
   165 	if (CapabilitySet)
   166 		v->iS.iCaps = Capability;
   167 	if (SecureIdSet)
   168 		v->iS.iSecureId = SecureId.iId;
   169 	if (VendorIdSet)
   170 		v->iS.iVendorId = VendorId.iId;	
   171 
   172 	// save header values
   173 	Capability = v->iS.iCaps;
   174 	SecureId.iId = v->iS.iSecureId;
   175 	VendorId.iId = v->iS.iVendorId;
   176 
   177 	// regenerate CRC
   178 	v->iHeaderCrc = KImageCrcInitialiser;
   179 	TUint32 crc = 0;
   180 	Mem::Crc32(crc, v, v->TotalSize());
   181 	v->iHeaderCrc = crc;
   182 	return KErrNone;
   183 	}
   184 
   185 #endif //__WINS__