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Kennwortmanager KeePassX Weiterentwicklung der Version 1
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keepassx1/src/PwManager.cpp

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/***************************************************************************
* Copyright (C) 2005 by Tarek Saidi *
* tarek@linux *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program is distributed in the hope that it will be useful, *
* but WITHOUT ANY WARRANTY; without even the implied warranty of *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
* GNU General Public License for more details. *
* *
* You should have received a copy of the GNU General Public License *
* along with this program; if not, write to the *
* Free Software Foundation, Inc., *
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. *
***************************************************************************/
#include "global.h"
#include <iostream>
#include <time.h>
#include <qfile.h>
#include <qstringlist.h>
#include <qobject.h>
#include <qdatetime.h>
#include <QSysInfo>
#include "crypto/sha256.h"
#include "crypto/rijndael.h"
#include "crypto/twoclass.h"
#include "lib/random.h"
using namespace std;
#include "PwManager.h"
QString PwDatabase::getError(){
if(Errors.size()){
QString r=Errors.front();
Errors.pop_front();
return r;
}
else return QString(trUtf8("unbekannter Fehler"));
}
QString PwDatabase::getErrors(){
QString r;
for(int i=0; i<Errors.size(); i++){
r+=Errors[i];
r+='\n';
}
Errors.clear();
return r;
}
QList<int> PwDatabase::getChildIds(CGroup* group){
if(!group)return QList<int>();
int GroupIndex=Groups.indexOf(*group);
int i;
QList<int> ids;
for(i=GroupIndex+1; i<Groups.size(); i++){
ids << Groups[i].ID;
if(Groups[i].Level <= group->Level) break;
}
return ids;
}
bool PwDatabase::loadDatabase(QString _filename, QString& err){
unsigned long total_size,crypto_size;
Q_UINT32 Signature1,Signature2,Version,NumGroups,NumEntries,Flags;
Q_UINT8 TrafoRandomSeed[32];
Q_UINT8 FinalRandomSeed[16];
Q_UINT8 ContentsHash[32];
Q_UINT8 EncryptionIV[16];
filename=_filename;
QFile file(filename);
file.open(QIODevice::ReadOnly);
total_size=file.size();
char* buffer = new char[total_size];
file.readBlock(buffer,total_size);
file.close();
if(total_size < DB_HEADER_SIZE){
err=trUtf8("Unerwartete Dateigröße (Dateigröße < DB_HEADER_SIZE)");
return false; }
memcpyFromLEnd32(&Signature1,buffer);
memcpyFromLEnd32(&Signature2,buffer+4);
memcpyFromLEnd32(&Flags,buffer+8);
memcpyFromLEnd32(&Version,buffer+12);
memcpy(FinalRandomSeed,buffer+16,16);
memcpy(EncryptionIV,buffer+32,16);
memcpyFromLEnd32(&NumGroups,buffer+48);
memcpyFromLEnd32(&NumEntries,buffer+52);
memcpy(ContentsHash,buffer+56,32);
memcpy(TrafoRandomSeed,buffer+88,32);
memcpyFromLEnd32(&KeyEncRounds,buffer+120);
if((Signature1!=PWM_DBSIG_1) || (Signature2!=PWM_DBSIG_2)){
err=trUtf8("Falsche Signatur");
return false;}
if((Version & 0xFFFFFF00) != (PWM_DBVER_DW & 0xFFFFFF00)){
err=trUtf8("Nicht unterstüzte Dateiversion");
return false;}
if(Flags & PWM_FLAG_RIJNDAEL) CryptoAlgorithmus = ALGO_AES;
else if(Flags & PWM_FLAG_TWOFISH) CryptoAlgorithmus = ALGO_TWOFISH;
else {
err=trUtf8("Unbekannter Verschlüsselungsalgorithmus");
return false;
}
transformKey(MasterKey,TransformedMasterKey,TrafoRandomSeed,KeyEncRounds);
Q_UINT8 FinalKey[32];
sha256_context sha32;
sha256_starts(&sha32);
sha256_update(&sha32,FinalRandomSeed, 16);
sha256_update(&sha32,TransformedMasterKey, 32);
sha256_finish(&sha32,FinalKey);
if(CryptoAlgorithmus == ALGO_AES)
{
Rijndael aes;
// Initialize Rijndael algorithm
if(aes.init(Rijndael::CBC, Rijndael::Decrypt, FinalKey,
Rijndael::Key32Bytes, EncryptionIV) != RIJNDAEL_SUCCESS)
{err=trUtf8("AES-Initialisierung fehlgeschlagen");
return false;}
// Decrypt! The first bytes aren't encrypted (that's the header)
crypto_size = (unsigned long)aes.padDecrypt((Q_UINT8 *)buffer + DB_HEADER_SIZE,
total_size - DB_HEADER_SIZE, (Q_UINT8 *)buffer + DB_HEADER_SIZE);
}
else if(CryptoAlgorithmus == ALGO_TWOFISH)
{
CTwofish twofish;
if(twofish.init(FinalKey, 32, EncryptionIV) != true){return false;}
crypto_size = (unsigned long)twofish.padDecrypt((Q_UINT8 *)buffer + DB_HEADER_SIZE,
total_size - DB_HEADER_SIZE, (Q_UINT8 *)buffer + DB_HEADER_SIZE);
}
if((crypto_size > 2147483446) || (crypto_size == 0)){err=trUtf8("Entschlüsselung nicht möglich - der Schlüssel ist falsch oder die Datei beschädigt."); return false;}
sha256_starts(&sha32);
sha256_update(&sha32,(unsigned char *)buffer + DB_HEADER_SIZE,crypto_size);
sha256_finish(&sha32,(unsigned char *)FinalKey);
if(memcmp(ContentsHash, FinalKey, 32) != 0)
{
err=trUtf8("Hash-Test fehlgeschlage: der Schlüssl ist falsch oder die Datei ist beschädigt.");
return false;}
unsigned long tmp_id=0;
unsigned long pos = DB_HEADER_SIZE;
Q_UINT16 FieldType;
Q_UINT32 FieldSize;
char* pField;
bool bRet;
CGroup group;
for(unsigned long CurGroup = 0; CurGroup < NumGroups; )
{
pField = buffer+pos;
memcpyFromLEnd16(&FieldType, pField);
pField += 2; pos += 2;
if(pos >= total_size) {
return false; }
memcpyFromLEnd32(&FieldSize, pField);
pField += 4; pos += 4;
if(pos >= (total_size + FieldSize)) {
return false;}
bRet = group.ReadGroupField(FieldType, FieldSize, (Q_UINT8 *)pField);
if((FieldType == 0xFFFF) && (bRet == true)){
Groups << group;
CurGroup++;} // Now and ONLY now the counter gets increased
pField += FieldSize;
pos += FieldSize;
if(pos >= total_size) { return false;}
}
CEntry entry;
for(unsigned long CurEntry = 0; CurEntry < NumEntries;)
{
pField = buffer+pos;
memcpyFromLEnd16(&FieldType, pField);
pField += 2; pos += 2;
if(pos >= total_size){
return false;}
memcpyFromLEnd32(&FieldSize, pField);
pField += 4; pos += 4;
if(pos >= (total_size + FieldSize)) {
return false; }
bRet = entry.ReadEntryField(FieldType,FieldSize,(Q_UINT8*)pField);
if((FieldType == 0xFFFF) && (bRet == true)){
entry.sID=tmp_id++;
Entries << entry;
CurEntry++;} // Now and ONLY now the counter gets increased
pField += FieldSize;
pos += FieldSize;
if(pos >= total_size) {
return false; }
}
unsigned long CurGID, g, e, z, num;
delete [] buffer;
for(int i=0;i<Entries.size();i++){
if(IsMetaStream(Entries[i])==true){
if(!parseMetaStream(Entries[i]))
UnkownMetaStreams << Entries[i];
deleteEntry(&Entries[i]);
i--;
}
}
return true;
}
bool PwDatabase::parseMetaStream(const CEntry& entry){
//return true for known MetaStreams
return false;
}
void PwDatabase::transformKey(Q_UINT8* src,Q_UINT8* dst,Q_UINT8* KeySeed,int rounds){
Q_UINT8* tmp=new Q_UINT8[32];
Rijndael rijndael;
sha256_context sha2;
if(rijndael.init(Rijndael::ECB, Rijndael::Encrypt, (const Q_UINT8 *)KeySeed,
Rijndael::Key32Bytes, 0) != RIJNDAEL_SUCCESS){
cout << QString("unexpected error in %1, line %2").arg(__FILE__).arg(__LINE__).ascii() << endl;
exit(1);}
memcpy(tmp,src,32);
for(int i=0;i<rounds;i++){
rijndael.blockEncrypt((const Q_UINT8 *)tmp, 256, (Q_UINT8 *)tmp);
}
sha256_starts(&sha2);
sha256_update(&sha2,tmp,32);
sha256_finish(&sha2,tmp);
memcpy(dst,tmp,32);
delete [] tmp;
}
bool PwDatabase::CalcMasterKeyByPassword(QString& Password){
unsigned long KeyLen, FileSize, Read;
sha256_context sha32;
char *paKey = NULL;
if(Password == QString::null) return false;
paKey = new char[Password.length() + 1];
if(paKey == NULL) return false;
strcpy(paKey, Password);
if(paKey == NULL) return false;
KeyLen = strlen(paKey);
if(KeyLen == 0) {
SecString::overwrite((unsigned char*)paKey,Password.length() + 1);
delete [] paKey;
return false; }
sha256_starts(&sha32);
sha256_update(&sha32,(unsigned char*) paKey, KeyLen);
sha256_finish(&sha32,MasterKey);
SecString::overwrite((unsigned char*)paKey,Password.length() + 1);
delete [] paKey;
return true;
}
bool PwDatabase::CalcMasterKeyByFile(QString filename){
QFile file(filename);
if(file.open(QIODevice::ReadOnly) == false) return false;
unsigned long FileSize=file.size();
if(FileSize == 32){
if(file.readBlock((char*)MasterKey,32) != 32){
file.close();
return false;}
}
else if(FileSize == 64){
char hex[64];
if(file.readBlock(hex,64) != 64){
file.close();
return false;}
file.close();
if(!convHexToBinaryKey(hex,(char*)MasterKey)) return false;
}
else
{
sha256_context sha32;
sha256_starts(&sha32);
unsigned char* buffer = new unsigned char[2048];
while(1)
{
unsigned long read=file.readBlock((char*)buffer,2048);
if(read == 0) break;
sha256_update(&sha32,buffer,read);
if(read != 2048) break;
}
sha256_finish(&sha32,MasterKey);
delete [] buffer;
}
file.close();
return true;
}
void PwDatabase::addEntry(CEntry* NewEntry){
CEntry *entry=addEntry();
*entry=*NewEntry;
}
CEntry* PwDatabase::addEntry(){
CEntry NewEntry;
if(Entries.size()==0){
NewEntry.sID=0;
getRandomBytes(&NewEntry.ID,16,1,false);
}
else {
NewEntry.sID=Entries.back().sID+1;
while(1){
bool used=false;
getRandomBytes(&NewEntry.ID,16,1,false);
for(int j=0;j<Entries.size();j++){
int k;
for(k=0;k<16;k++){if(Entries[j].ID[k]!=NewEntry.ID[k])k=0;break;}
if(k==15)used=true;}
if(used==false)break;
}}
Entries.push_back(NewEntry);
return &Entries.back();
}
bool PwDatabase::CalcMasterKeyByFileAndPw(QString filename, QString& Password){
Q_UINT8* FileKey;
Q_UINT8* PasswordKey;
PasswordKey=new Q_UINT8[32];
FileKey=new Q_UINT8[32];
sha256_context sha32;
/////////////////////////
QFile file(filename);
if(file.open(QIODevice::ReadOnly) == false) return false;
unsigned long FileSize=file.size();
if(FileSize == 32){
if(file.readBlock((char*)FileKey,32) != 32){
file.close();
return false;}
}
else if(FileSize == 64){
char hex[64];
if(file.readBlock(hex,64) != 64){
file.close();
return false;}
file.close();
if(!convHexToBinaryKey(hex,(char*)FileKey)) return false;
}
else{
sha256_starts(&sha32);
unsigned char* buffer = new unsigned char[2048];
while(1)
{
unsigned long read=file.readBlock((char*)buffer,2048);
if(read == 0) break;
sha256_update(&sha32,buffer,read);
if(read != 2048) break;
}
sha256_finish(&sha32,FileKey);
delete [] buffer;
}
file.close();
//////////////////////
unsigned long KeyLen;
char *paKey = NULL;
if(Password == QString::null) return false;
paKey = new char[Password.length() + 1];
if(paKey == NULL) return false;
strcpy(paKey, Password);
if(paKey == NULL) return false;
KeyLen = strlen(paKey);
if(KeyLen == 0) {
delete [] paKey;
return false; }
sha256_starts(&sha32);
sha256_update(&sha32,(unsigned char*) paKey, KeyLen);
sha256_finish(&sha32,PasswordKey);
delete [] paKey;
////////////////////
sha256_starts(&sha32);
sha256_update(&sha32,(unsigned char*)PasswordKey,32);
sha256_update(&sha32,(unsigned char*)FileKey,32);
sha256_finish(&sha32,MasterKey);
delete[] PasswordKey;
delete[] FileKey;
}
void PwDatabase::deleteEntry(CEntry* entry){
Entries.removeAt(Entries.indexOf(*entry));
}
bool PwDatabase::IsMetaStream(CEntry& p){
if(p.BinaryData.isNull()) return false;
if(p.Additional == "") return false;
if(p.BinaryDesc == "") return false;
if(p.BinaryDesc != "bin-stream") return false;
if(p.Title == "") return false;
if(p.Title != "Meta-Info") return false;
if(p.UserName == "") return false;
if(p.UserName != "SYSTEM") return false;
if(p.URL == "") return false;
if(p.URL != "$") return false;
if(p.ImageID != 0) return false;
return true;
}
void PwDatabase::moveEntry(CEntry* entry,CGroup* dst){
entry->GroupID=dst->ID;
}
CEntry* PwDatabase::cloneEntry(CEntry* entry){
CEntry *Dolly=addEntry();
Q_UINT8 ID[16];
Q_UINT32 sid=Dolly->sID;
memcpy(ID,Dolly->ID,16);
*Dolly=*entry;
Dolly->sID=sid;
memcpy(Dolly->ID,ID,16);
return Dolly;
}
bool CGroup::ReadGroupField(Q_UINT16 FieldType, Q_UINT32 FieldSize, Q_UINT8 *pData)
{
switch(FieldType)
{
case 0x0000:
// Ignore field
break;
case 0x0001:
memcpyFromLEnd32(&ID, (char*)pData);
break;
case 0x0002:
//Name.fromUtf8((char*)pData);
Name=QString::fromUtf8((char*)pData);
break;
case 0x0003:
Creation=dateFromPackedStruct5(pData);
break;
case 0x0004:
LastMod=dateFromPackedStruct5(pData);
break;
case 0x0005:
LastAccess=dateFromPackedStruct5(pData);
break;
case 0x0006:
Expire=dateFromPackedStruct5(pData);
break;
case 0x0007:
memcpyFromLEnd32(&ImageID, (char*)pData);
break;
case 0x0008:
memcpyFromLEnd16(&Level, (char*)pData);
break;
case 0x0009:
memcpyFromLEnd32(&Flags, (char*)pData);
break;
case 0xFFFF:
break;
default:
return false; // Field unsupported
}
return true; // Field supported
}
PwDatabase::PwDatabase(){
SearchGroupID=-1;
}
PwDatabase::~PwDatabase(){
}
bool CEntry::ReadEntryField(Q_UINT16 FieldType, Q_UINT32 FieldSize, Q_UINT8 *pData){
switch(FieldType)
{
case 0x0000:
// Ignore field
break;
case 0x0001:
memcpy(ID, pData, 16);
break;
case 0x0002:
memcpyFromLEnd32(&GroupID, (char*)pData);
break;
case 0x0003:
memcpyFromLEnd32(&ImageID, (char*)pData);
break;
case 0x0004:
Title=QString::fromUtf8((char*)pData);
break;
case 0x0005:
URL=QString::fromUtf8((char*)pData);
break;
case 0x0006:
UserName=QString::fromUtf8((char*)pData);
break;
case 0x0007:{
QString s=QString::fromUtf8((char*)pData);
Password.setString(s,true);
break;}
case 0x0008:
Additional=QString::fromUtf8((char*)pData);
break;
case 0x0009:
Creation=dateFromPackedStruct5(pData);
break;
case 0x000A:
LastMod=dateFromPackedStruct5(pData);
break;
case 0x000B:
LastAccess=dateFromPackedStruct5(pData);
break;
case 0x000C:
Expire=dateFromPackedStruct5(pData);
break;
case 0x000D:
BinaryDesc=(char*)pData;
break;
case 0x000E:
if(FieldSize != 0)
BinaryData=QByteArray((char*)pData,FieldSize);
else
BinaryData=QByteArray(); //=NULL
break;
case 0xFFFF:
break;
default:
return false; // Field unsupported
}
return true; // Field processed
}
bool PwDatabase::closeDatabase(){
Groups.clear();
Entries.clear();
return true;
}
bool PwDatabase::saveDatabase(){
CGroup SearchGroup;
Q_UINT32 NumGroups,NumEntries,Signature1,Signature2,Flags,Version;
Q_UINT8 TrafoRandomSeed[32];
Q_UINT8 FinalRandomSeed[16];
Q_UINT8 ContentsHash[32];
Q_UINT8 EncryptionIV[16];
if(filename==QString::null)return false;
QFile file(filename);
unsigned int FileSize;
Entries+=UnkownMetaStreams; ///@FIXME ID conflicts???
FileSize=DB_HEADER_SIZE;
// Get the size of all groups (94 Byte + length of the name string)
for(int i = 0; i < Groups.size(); i++){
FileSize += 94 + Groups[i].Name.utf8().length()+1;
}
// Get the size of all entries
for(int i = 0; i < Entries.size(); i++){
FileSize += 134
+Entries[i].Title.utf8().length()+1
+Entries[i].UserName.utf8().length()+1
+Entries[i].URL.utf8().length()+1
+Entries[i].Password.length()+1
+Entries[i].Additional.utf8().length()+1
+Entries[i].BinaryDesc.utf8().length()+1
+Entries[i].BinaryData.length();}
// Round up filesize to 16-byte boundary for Rijndael/Twofish
FileSize = (FileSize + 16) - (FileSize % 16);
char* buffer=new char[FileSize+16];
Signature1 = PWM_DBSIG_1;
Signature2 = PWM_DBSIG_2;
Flags = PWM_FLAG_SHA2;
if(CryptoAlgorithmus == ALGO_AES) Flags |= PWM_FLAG_RIJNDAEL;
else if(CryptoAlgorithmus == ALGO_TWOFISH) Flags |= PWM_FLAG_TWOFISH;
Version = PWM_DBVER_DW;
NumGroups = Groups.size(); //-> (+MetaStreams)
NumEntries = Entries.size();
getRandomBytes(FinalRandomSeed,1,16,false);
getRandomBytes(TrafoRandomSeed,1,32,false);
getRandomBytes(EncryptionIV,1,16,false);
Q_UINT16 FieldType;
Q_UINT32 FieldSize;
int pos=DB_HEADER_SIZE; // Skip the header, it will be written later
for(int i=0; i < Groups.size(); i++){
FieldType = 0x0001; FieldSize = 4;
memcpyToLEnd16(buffer+pos, &FieldType); pos += 2;
memcpyToLEnd32(buffer+pos, &FieldSize); pos += 4;
memcpyToLEnd32(buffer+pos, &Groups[i].ID); pos += 4;
FieldType = 0x0002; FieldSize = Groups[i].Name.utf8().length() + 1;
memcpyToLEnd16(buffer+pos, &FieldType); pos += 2;
memcpyToLEnd32(buffer+pos, &FieldSize); pos += 4;
memcpy(buffer+pos, Groups[i].Name.utf8(),FieldSize); pos += FieldSize;
FieldType = 0x0003; FieldSize = 5;
memcpyToLEnd16(buffer+pos, &FieldType); pos += 2;
memcpyToLEnd32(buffer+pos, &FieldSize); pos += 4;
dateToPackedStruct5(Groups[i].Creation,(unsigned char*)buffer+pos); pos += 5;
FieldType = 0x0004; FieldSize = 5;
memcpyToLEnd16(buffer+pos, &FieldType); pos += 2;
memcpyToLEnd32(buffer+pos, &FieldSize); pos += 4;
dateToPackedStruct5(Groups[i].LastMod,(unsigned char*)buffer+pos);pos += 5;
FieldType = 0x0005; FieldSize = 5;
memcpyToLEnd16(buffer+pos, &FieldType); pos += 2;
memcpyToLEnd32(buffer+pos, &FieldSize); pos += 4;
dateToPackedStruct5(Groups[i].LastAccess,(unsigned char*)buffer+pos);pos += 5;
FieldType = 0x0006; FieldSize = 5;
memcpyToLEnd16(buffer+pos, &FieldType); pos += 2;
memcpyToLEnd32(buffer+pos, &FieldSize); pos += 4;
dateToPackedStruct5(Groups[i].Expire,(unsigned char*)buffer+pos);pos += 5;
FieldType = 0x0007; FieldSize = 4;
memcpyToLEnd16(buffer+pos, &FieldType); pos += 2;
memcpyToLEnd32(buffer+pos, &FieldSize); pos += 4;
memcpyToLEnd32(buffer+pos, &Groups[i].ImageID); pos += 4;
FieldType = 0x0008; FieldSize = 2;
memcpyToLEnd16(buffer+pos, &FieldType); pos += 2;
memcpyToLEnd32(buffer+pos, &FieldSize); pos += 4;
memcpyToLEnd16(buffer+pos, &Groups[i].Level); pos += 2;
FieldType = 0x0009; FieldSize = 4;
memcpyToLEnd16(buffer+pos, &FieldType); pos += 2;
memcpyToLEnd32(buffer+pos, &FieldSize); pos += 4;
memcpyToLEnd32(buffer+pos, &Groups[i].Flags); pos += 4;
FieldType = 0xFFFF; FieldSize = 0;
memcpyToLEnd16(buffer+pos, &FieldType); pos += 2;
memcpyToLEnd32(buffer+pos, &FieldSize); pos += 4;
}
for(int i = 0; i < Entries.size(); i++){
FieldType = 0x0001; FieldSize = 16;
memcpyToLEnd16(buffer+pos, &FieldType); pos += 2;
memcpyToLEnd32(buffer+pos, &FieldSize); pos += 4;
memcpy(buffer+pos, &Entries[i].ID, 16); pos += 16;
FieldType = 0x0002; FieldSize = 4;
memcpyToLEnd16(buffer+pos, &FieldType); pos += 2;
memcpyToLEnd32(buffer+pos, &FieldSize); pos += 4;
memcpyToLEnd32(buffer+pos, &Entries[i].GroupID); pos += 4;
FieldType = 0x0003; FieldSize = 4;
memcpyToLEnd16(buffer+pos, &FieldType); pos += 2;
memcpyToLEnd32(buffer+pos, &FieldSize); pos += 4;
memcpyToLEnd32(buffer+pos, &Entries[i].ImageID); pos += 4;
FieldType = 0x0004;
FieldSize = Entries[i].Title.utf8().length() + 1; // Add terminating NULL character space
memcpyToLEnd16(buffer+pos, &FieldType); pos += 2;
memcpyToLEnd32(buffer+pos, &FieldSize); pos += 4;
memcpy(buffer+pos, Entries[i].Title.utf8(),FieldSize); pos += FieldSize;
FieldType = 0x0005;
FieldSize = Entries[i].URL.utf8().length() + 1; // Add terminating NULL character space
memcpyToLEnd16(buffer+pos, &FieldType); pos += 2;
memcpyToLEnd32(buffer+pos, &FieldSize); pos += 4;
memcpy(buffer+pos, Entries[i].URL.utf8(),FieldSize); pos += FieldSize;
FieldType = 0x0006;
FieldSize = Entries[i].UserName.utf8().length() + 1; // Add terminating NULL character space
memcpyToLEnd16(buffer+pos, &FieldType); pos += 2;
memcpyToLEnd32(buffer+pos, &FieldSize); pos += 4;
memcpy(buffer+pos, Entries[i].UserName.utf8(),FieldSize); pos += FieldSize;
FieldType = 0x0007;
FieldSize = Entries[i].Password.length() + 1; // Add terminating NULL character space
memcpyToLEnd16(buffer+pos, &FieldType); pos += 2;
memcpyToLEnd32(buffer+pos, &FieldSize); pos += 4;
Entries[i].Password.unlock();
memcpy(buffer+pos, Entries[i].Password.string(),FieldSize); pos += FieldSize;
Entries[i].Password.lock();
FieldType = 0x0008;
FieldSize = Entries[i].Additional.utf8().length() + 1; // Add terminating NULL character space
memcpyToLEnd16(buffer+pos, &FieldType); pos += 2;
memcpyToLEnd32(buffer+pos, &FieldSize); pos += 4;
memcpy(buffer+pos, Entries[i].Additional.utf8(),FieldSize); pos += FieldSize;
FieldType = 0x0009; FieldSize = 5;
memcpyToLEnd16(buffer+pos, &FieldType); pos += 2;
memcpyToLEnd32(buffer+pos, &FieldSize); pos += 4;
dateToPackedStruct5(Entries[i].Creation,(unsigned char*)buffer+pos); pos+=5;
FieldType = 0x000A; FieldSize = 5;
memcpyToLEnd16(buffer+pos, &FieldType); pos += 2;
memcpyToLEnd32(buffer+pos, &FieldSize); pos += 4;
dateToPackedStruct5(Entries[i].LastMod,(unsigned char*)buffer+pos); pos+=5;
FieldType = 0x000B; FieldSize = 5;
memcpyToLEnd16(buffer+pos, &FieldType); pos += 2;
memcpyToLEnd32(buffer+pos, &FieldSize); pos += 4;
dateToPackedStruct5(Entries[i].LastAccess,(unsigned char*)buffer+pos); pos+=5;
FieldType = 0x000C; FieldSize = 5;
memcpyToLEnd16(buffer+pos, &FieldType); pos += 2;
memcpyToLEnd32(buffer+pos, &FieldSize); pos += 4;
dateToPackedStruct5(Entries[i].Expire,(unsigned char*)buffer+pos); pos+=5;
FieldType = 0x000D;
FieldSize = Entries[i].BinaryDesc.utf8().length() + 1; // Add terminating NULL character space
memcpyToLEnd16(buffer+pos, &FieldType); pos += 2;
memcpyToLEnd32(buffer+pos, &FieldSize); pos += 4;
memcpy(buffer+pos, Entries[i].BinaryDesc.utf8(),FieldSize); pos += FieldSize;
FieldType = 0x000E; FieldSize = Entries[i].BinaryData.length();
memcpyToLEnd16(buffer+pos, &FieldType); pos += 2;
memcpyToLEnd32(buffer+pos, &FieldSize); pos += 4;
if((!Entries[i].BinaryData.isNull()) && (FieldSize != 0))
memcpy(buffer+pos, Entries[i].BinaryData.data(), FieldSize);
pos += FieldSize;
FieldType = 0xFFFF; FieldSize = 0;
memcpyToLEnd16(buffer+pos, &FieldType); pos += 2;
memcpyToLEnd32(buffer+pos, &FieldSize); pos += 4;
}
sha256_context context;
sha256_starts(&context);
sha256_update(&context,(unsigned char*)buffer+DB_HEADER_SIZE, pos - DB_HEADER_SIZE);
sha256_finish(&context,(unsigned char*)ContentsHash);
memcpyToLEnd32(buffer,&Signature1);
memcpyToLEnd32(buffer+4,&Signature2);
memcpyToLEnd32(buffer+8,&Flags);
memcpyToLEnd32(buffer+12,&Version);
memcpy(buffer+16,FinalRandomSeed,16);
memcpy(buffer+32,EncryptionIV,16);
memcpyToLEnd32(buffer+48,&NumGroups);
memcpyToLEnd32(buffer+52,&NumEntries);
memcpy(buffer+56,ContentsHash,32);
memcpy(buffer+88,TrafoRandomSeed,32);
memcpyToLEnd32(buffer+120,&KeyEncRounds);
transformKey(MasterKey,TransformedMasterKey,TrafoRandomSeed,KeyEncRounds);
Q_UINT8 FinalKey[32];
sha256_starts(&context);
sha256_update(&context,FinalRandomSeed, 16);
sha256_update(&context,TransformedMasterKey, 32);
sha256_finish(&context,FinalKey);
unsigned long EncryptedPartSize;
if(CryptoAlgorithmus == ALGO_AES){
Rijndael aes;
// Initialize Rijndael/AES
if(aes.init(Rijndael::CBC, Rijndael::Encrypt, FinalKey,Rijndael::Key32Bytes, EncryptionIV) != RIJNDAEL_SUCCESS){
//TODO:ERR_MSG
delete [] buffer;
return false;}
EncryptedPartSize = (unsigned long)aes.padEncrypt((Q_UINT8*)buffer+DB_HEADER_SIZE,
pos - DB_HEADER_SIZE,
(Q_UINT8*)buffer+DB_HEADER_SIZE);
}else if(CryptoAlgorithmus == ALGO_TWOFISH){
CTwofish twofish;
if(twofish.init(FinalKey, 32, EncryptionIV) == false){
//TODO:ERR_MSG
delete [] buffer;
return false;}
EncryptedPartSize = (unsigned long)twofish.padEncrypt((Q_UINT8*)buffer+DB_HEADER_SIZE,
pos - DB_HEADER_SIZE,
(Q_UINT8*)buffer+DB_HEADER_SIZE);
}
if((EncryptedPartSize > 2147483446) || (EncryptedPartSize == 0)){
//TODO:ERR_MSG
delete [] buffer;
return false;
}
if(file.open(QIODevice::ReadWrite | QIODevice::Truncate)==false){
//TODO:ERR_MSG
delete [] buffer;
return false;
}
if(file.writeBlock(buffer,EncryptedPartSize+DB_HEADER_SIZE)!=EncryptedPartSize+DB_HEADER_SIZE){
//TODO:ERR_MSG
file.close();
delete [] buffer;
return false;
}
file.close();
delete [] buffer;
if(SearchGroupID!=-1)Groups.push_back(SearchGroup);
return true;
}
CGroup* PwDatabase::addGroup(CGroup* parent){
CGroup group;
if(parent)group.Level=parent->Level+1;
group.ImageID=0;
group.ID=getNewGroupId();
if(!Groups.size() || !parent){
Groups << group;
return &Groups.back();
}
else { int i=Groups.indexOf(*parent)+1;
for(i;i<Groups.size();i++)
if(Groups[i].Level<=parent->Level)break;
Groups.insert(i,group);
return &Groups[i];}
}
void PwDatabase::deleteGroup(unsigned long id){
for(int i=0;i<Groups.size();i++){
if(Groups[i].ID==id) return deleteGroup(&Groups[i]);
}
}
void PwDatabase::deleteGroup(CGroup* group){
int GroupIndex=Groups.indexOf(*group);
int NumChilds;
int i;
for(i=GroupIndex+1; i<Groups.size(); i++){
if(Groups[i].Level<=group->Level)break;
}
NumChilds=i-GroupIndex-1;
//delete entries
for(i=GroupIndex; i<=GroupIndex+NumChilds; i++){
for(int j=0; j<Entries.size();){
if(Entries[j].GroupID==Groups[i].ID)
deleteEntry(&Entries[j]);
else
j++;
}
}
for(i=NumChilds; i>=0; i--){
Groups.removeAt(GroupIndex+i);
}
}
int PwDatabase::getGroupIndex(CGroup* g){
return getGroupIndex(g->ID);
}
int PwDatabase::getGroupIndex(unsigned long ID){
int i=0;
for(i;i<Groups.size();i++){
if(Groups[i].ID==ID)break;
}
return i;
}
void PwDatabase::merge(PwDatabase* db){
for(int i=0;i<db->Groups.size();i++){
int NewGroupID;
if(isGroupIdInUse(db->Groups[i].ID)==true) NewGroupID=getNewGroupId();
else NewGroupID=db->Groups[i].ID;
for(int j=0;j<db->Entries.size();j++){
if(db->Entries[j].GroupID==db->Groups[i].ID){
Entries.push_back(db->Entries[j]);
Entries.back().GroupID=NewGroupID;
Entries.back().sID=getNewEntrySid();}
}
Groups.push_back(db->Groups[i]);
Groups.back().ID=NewGroupID;
}
}
bool PwDatabase::isGroupIdInUse(Q_UINT32 id){
for(int i=0;i<Groups.size();i++)
if(Groups[i].ID==id)return true;
return false;
}
bool PwDatabase::isEntrySidInUse(Q_UINT32 sid){
for(int i=0;i<Entries.size();i++)
if(Entries[i].sID==sid)return true;
return false;
}
bool PwDatabase::isParentGroup(CGroup* child, CGroup* parent){
if(child==parent)return true; //maybe a bad idea
int ChildIndex=getGroupIndex(child->ID);
int ParentIndex=getGroupIndex(parent->ID);
if(ParentIndex > ChildIndex) return false;
for(int i=ChildIndex; i>ParentIndex;i--){
if(Groups[i].Level<=parent->Level)return false;
}
return true;
}
Q_UINT32 PwDatabase::getNewGroupId(){
Q_UINT32 id;
bool used;
while(1){
used=false;
getRandomBytes(&id,4,1,false);
if(!id)continue; //darf nicht 0 sein (KDB-Format v3)
for(int j=0;j<Groups.size();j++){
if(Groups[j].ID==id)used=true;}
if(used==false)break;}
return id;
}
Q_UINT32 PwDatabase::getNewEntrySid(){
Q_UINT32 sid;
while(1){
getRandomBytes(&sid,4,1,false);
if(!sid)continue;
if(!isEntrySidInUse(sid))break;
}
return sid;
}
bool PwDatabase::convHexToBinaryKey(char* HexKey, char* dst){
QString hex=QString::fromAscii(HexKey,64);
for(int i=0; i<64; i+=2){
bool err;
Q_UINT8 bin;
bin=hex.mid(i,2).toUInt(&err,16);
if(!err){
qWarning("Invalid Hex Key\n");
return false;}
memcpy(dst+(i/2),&bin,1);
}
}
void PwDatabase::moveGroup(CGroup* group, CGroup* DstGroup, int pos){
int NumSubGroups=0;
int GroupIndex=Groups.indexOf(*group);
int DstIndex;
int i;
for(i=GroupIndex+1; i<Groups.size(); i++){
if(Groups[i].Level <= group->Level) break;
}
NumSubGroups=i-GroupIndex-1;
int LevelDiff;
QList<CGroup> tmp;
if(DstGroup)
LevelDiff=DstGroup->Level - group->Level +1;
else
LevelDiff=-group->Level;
for(i=GroupIndex; i<=GroupIndex+NumSubGroups; i++){
tmp << Groups[i];
tmp.back().Level+=LevelDiff;
}
for(i=0; i<=NumSubGroups; i++)
Groups.removeAt(GroupIndex);
int NumParentSubGroups;
if(DstGroup){
DstIndex=Groups.indexOf(*DstGroup);
NumParentSubGroups=getNumberOfChilds(DstGroup);}
else{
DstIndex=0;
NumParentSubGroups=Groups.size();}
if(pos==-1)DstIndex+=(NumParentSubGroups+1);
else{ int n=0; //Counter for direct (first-level) childs
for(i=0; i<NumParentSubGroups;i++){
if(n==pos)break;
if(Groups[DstIndex+1+i].Level==DstGroup->Level+1)n++;
}
DstIndex+=(n+1);
}
for(i=NumSubGroups; i>=0; i--)
Groups.insert(DstIndex,tmp[i]);
}
void PwDatabase::moveGroupDirectly(CGroup* group, CGroup* DstGroup){
int NumSubGroups=getNumberOfChilds(group);
int GroupIndex=Groups.indexOf(*group);
int DstIndex, LevelDiff, i;
QList<CGroup> tmp;
if(DstGroup)
LevelDiff=DstGroup->Level - group->Level;
else
LevelDiff=-group->Level;
for(i=GroupIndex; i<=GroupIndex+NumSubGroups; i++){
tmp << Groups[i];
tmp.back().Level+=LevelDiff;
}
for(i=0; i<=NumSubGroups; i++)
Groups.removeAt(GroupIndex);
if(DstGroup)
DstIndex=Groups.indexOf(*DstGroup)+1;
else
DstIndex=0;
for(i=NumSubGroups; i>=0; i--)
Groups.insert(DstIndex,tmp[i]);
}
int PwDatabase::getNumberOfChilds(CGroup* group){
if(!group)return Groups.size();
int GroupIndex=Groups.indexOf(*group);
int i;
for(i=GroupIndex+1; i<Groups.size(); i++){
if(Groups[i].Level <= group->Level) break;
}
return (i-GroupIndex-1);
}
void memcpyFromLEnd32(Q_UINT32* dst,char* src){
if(QSysInfo::ByteOrder==QSysInfo::BigEndian){
memcpy(((char*)dst)+3,src+0,1);
memcpy(((char*)dst)+2,src+1,1);
memcpy(((char*)dst)+1,src+2,1);
memcpy(((char*)dst)+0,src+3,1);
}
else
memcpy(dst,src,4);
}
void memcpyFromLEnd16(Q_UINT16* dst,char* src){
if(QSysInfo::ByteOrder==QSysInfo::BigEndian){
memcpy(((char*)dst)+1,src+0,1);
memcpy(((char*)dst)+0,src+1,1);
}
else
memcpy(dst,src,2);
}
void memcpyToLEnd32(char* dst,Q_UINT32* src){
if(QSysInfo::ByteOrder==QSysInfo::BigEndian){
memcpy(dst+0,((char*)src)+3,1);
memcpy(dst+1,((char*)src)+2,1);
memcpy(dst+2,((char*)src)+1,1);
memcpy(dst+3,((char*)src)+0,1);
}
else
memcpy(dst,src,4);
}
void memcpyToLEnd16(char* dst,Q_UINT16* src){
if(QSysInfo::ByteOrder==QSysInfo::BigEndian){
memcpy(dst+0,((char*)src)+1,1);
memcpy(dst+1,((char*)src)+0,1);
}
else
memcpy(dst,src,2);
}
const QDateTime Date_Never(QDate(2999,12,28),QTime(23,59,59));
QDateTime dateFromPackedStruct5(const unsigned char* pBytes){
Q_UINT32 dw1, dw2, dw3, dw4, dw5;
dw1 = (Q_UINT32)pBytes[0]; dw2 = (Q_UINT32)pBytes[1]; dw3 = (Q_UINT32)pBytes[2];
dw4 = (Q_UINT32)pBytes[3]; dw5 = (Q_UINT32)pBytes[4];
int y = (dw1 << 6) | (dw2 >> 2);
int mon = ((dw2 & 0x00000003) << 2) | (dw3 >> 6);
int d = (dw3 >> 1) & 0x0000001F;
int h = ((dw3 & 0x00000001) << 4) | (dw4 >> 4);
int min = ((dw4 & 0x0000000F) << 2) | (dw5 >> 6);
int s = dw5 & 0x0000003F;
return QDateTime(QDate(y,mon,d),QTime(h,min,s));
}
void dateToPackedStruct5(const QDateTime& d,unsigned char* pBytes){
pBytes[0] = (Q_UINT8)(((Q_UINT32)d.date().year() >> 6) & 0x0000003F);
pBytes[1] = (Q_UINT8)((((Q_UINT32)d.date().year() & 0x0000003F) << 2) | (((Q_UINT32)d.date().month() >> 2) & 0x00000003));
pBytes[2] = (Q_UINT8)((((Q_UINT32)d.date().month() & 0x00000003) << 6) | (((Q_UINT32)d.date().day() & 0x0000001F) << 1) | (((Q_UINT32)d.time().hour() >> 4) & 0x00000001));
pBytes[3] = (Q_UINT8)((((Q_UINT32)d.time().hour() & 0x0000000F) << 4) | (((Q_UINT32)d.time().minute() >> 2) & 0x0000000F));
pBytes[4] = (Q_UINT8)((((Q_UINT32)d.time().minute() & 0x00000003) << 6) | ((Q_UINT32)d.time().second() & 0x0000003F));
}
class KPTestResults{
public:
KPTestResults(){passed=failed=0;}
int passed, failed;
};
/* assumes context of failed/passed variables */
#define kp_assert(results, x) \
do {\
if (x){\
(results).passed++;\
}else{\
(results).failed++;\
cout << __FILE__ << ":" << __LINE__ << ": assert failed: " << #x << endl; \
}\
} while(0)
void testDateConv(KPTestResults& results, const QDateTime& d){
unsigned char binDate[5];
dateToPackedStruct5(d, binDate);
kp_assert(results, d.toTime_t() == dateFromPackedStruct5(binDate).toTime_t());
}
void assertGroupsEq(KPTestResults& results, CGroup* left, CGroup* right){
unsigned long size = 0;
kp_assert(results, left->ID == right->ID);
size += sizeof(left->ID);
kp_assert(results, left->ImageID == right->ImageID);
size += sizeof(left->ImageID);
kp_assert(results, left->Name == right->Name);
size += sizeof(left->Name);
kp_assert(results, left->Creation.toTime_t() == right->Creation.toTime_t());
size += sizeof(left->Creation);
kp_assert(results, left->LastMod.toTime_t() == right->LastMod.toTime_t());
size += sizeof(left->LastMod);
kp_assert(results, left->LastAccess.toTime_t() == right->LastAccess.toTime_t());
size += sizeof(left->LastAccess);
kp_assert(results, left->Expire.toTime_t() == right->Expire.toTime_t());
size += sizeof(left->Expire);
kp_assert(results, left->Level == right->Level);
size += sizeof(left->Level);
kp_assert(results, left->Flags == right->Flags);
size += sizeof(left->Flags);
/* ignore expansion */
size += sizeof(left->UI_ItemIsExpanded);
/* make sure that all members were checked */
/* CGroup is padded with two additional bytes */
kp_assert(results, size + 2 == sizeof(CGroup));
kp_assert(results, 40 == sizeof(CGroup));
}
void assertEntriesEq(KPTestResults& results, CEntry* left, CEntry* right){
unsigned long size = 0;
kp_assert(results, memcmp(left->ID, right->ID, sizeof(left->ID)) == 0);
size += sizeof(left->ID);
kp_assert(results, left->sID == right->sID);
size += sizeof(left->sID);
kp_assert(results, left->GroupID == right->GroupID);
size += sizeof(left->GroupID);
kp_assert(results, left->ImageID == right->ImageID);
size += sizeof(left->ImageID);
kp_assert(results, left->Title == right->Title);
size += sizeof(left->Title);
kp_assert(results, left->URL == right->URL);
size += sizeof(left->URL);
kp_assert(results, left->UserName == right->UserName);
size += sizeof(left->UserName);
left->Password.unlock();
right->Password.unlock();
kp_assert(results, left->Password.string() == right->Password.string());
size += sizeof(left->Password);
left->Password.lock();
right->Password.lock();
kp_assert(results, left->Additional == right->Additional);
size += sizeof(left->Additional);
kp_assert(results, left->BinaryDesc == right->BinaryDesc);
size += sizeof(left->BinaryDesc);
kp_assert(results, left->Creation.toTime_t() == right->Creation.toTime_t());
size += sizeof(left->Creation);
kp_assert(results, left->LastMod.toTime_t() == right->LastMod.toTime_t());
size += sizeof(left->LastMod);
kp_assert(results, left->LastAccess.toTime_t() == right->LastAccess.toTime_t());
size += sizeof(left->LastAccess);
kp_assert(results, left->Expire.toTime_t() == right->Expire.toTime_t());
size += sizeof(left->Expire);
kp_assert(results, left->BinaryData.length() == right->BinaryData.length());
kp_assert(results, (left->BinaryData.isNull() && right->BinaryData.isNull()) ||
memcmp(left->BinaryData.data(), right->BinaryData.data(), left->BinaryData.length()) == 0);
size += left->BinaryData.length();
size += sizeof(left->BinaryData.length());
kp_assert(results, size == sizeof(CEntry));
}
void assertDatabasesEq(KPTestResults& results, PwDatabase* left, PwDatabase* right){
/* check groups */
kp_assert(results, left->Groups.size() == right->Groups.size());
int numGroups = min(left->Groups.size(), right->Groups.size());
for(int i=0;i<numGroups;i++)
assertGroupsEq(results, &left->Groups[i], &right->Groups[i]);
/* check entries */
kp_assert(results, left->Entries.size() == right->Entries.size());
int numEntries = min(left->Entries.size(), right->Entries.size());
for(int j=0;j<numEntries;j++)
assertEntriesEq(results, &left->Entries[j], &right->Entries[j]);
}
bool testDatabase(){
KPTestResults results;
/* test the date/time serialization */
QDateTime now = QDateTime::currentDateTime();
testDateConv(results, now);
testDateConv(results, Date_Never);
QString dbPassword("keepass-db-test");
const QString dbPath("/tmp/keepass-db-test");
/* create a test database */
PwDatabase database;
kp_assert(results, database.CalcMasterKeyByPassword(dbPassword));
database.filename = dbPath;
database.CryptoAlgorithmus = ALGO_TWOFISH;
CGroup* main = database.addGroup(NULL);
CGroup* child = database.addGroup(main);
child->Name = "<Subgroup>";
QString entry1pw("password");
CEntry* entry1 = database.addEntry();
database.moveEntry(entry1, main);
entry1->Title = "title";
entry1->URL = "http://keepass.berlios.de/";
entry1->UserName = "username";
entry1->Password.setString(entry1pw);
entry1->Additional = "additional";
entry1->BinaryDesc = "binarydesc";
QString entry2pw("password");
CEntry* entry2 = database.addEntry();
database.moveEntry(entry2, child);
entry2->Title = "TITLE";
entry2->URL = "http://keepass.berlios.de/";
entry2->UserName = "USERNAME";
entry2->Password.setString(entry2pw);
entry2->Additional = "ADDITIONAL";
entry2->BinaryDesc = "BINARYDESC";
/* save the database */
kp_assert(results, database.saveDatabase());
/* reload the database */
PwDatabase cloneDatabase;
kp_assert(results, cloneDatabase.CalcMasterKeyByPassword(dbPassword));
QString err;
bool loadedDB = cloneDatabase.loadDatabase(dbPath, err);
if (!loadedDB){
kp_assert(results, loadedDB);
cout << err.ascii() << endl;
}
assertDatabasesEq(results, &database, &cloneDatabase);
/* compare the databases */
cout << results.passed << "/" << (results.passed+results.failed) << " ok" << endl;
return results.failed == 0;
}