BOOL
MulticastAccessControl::IsValidAddress(const char* incomingAddr)
{
ULONG32 clientAddr = _convertStrToNetLongAddr(incomingAddr,
strlen(incomingAddr));
return ValidateAddress(clientAddr);
}
TMsvPartList CSmtpClientMtm::ValidateMessage(TMsvPartList aPartList)
/** Validates the current message context.
The addresses for the message are checked to be well-formed email addresses.
@param aPartList Indicates the message parts for which validation is requested
@return If valid, KErrNone If invalid, identifies the invalid part(s). The
error value is the bitmask of the TMsvPartList IDs for each invalid part */
{
__ASSERT_DEBUG(iMsvEntry!=NULL,gPanic(ESmtcMTMNoCMsvEntrySet));
TMsvPartList failed(0);
if (aPartList & KMsvMessagePartRecipient)
{
if (iAddresseeList->Count() == 0)
failed |= KMsvMessagePartRecipient;
else
{
// check the recipient list for valid 'addresses'
for (TInt ii=0; ii < iAddresseeList->Count(); ++ii)
{
if (((*iAddresseeList)[ii].Length() == 0) || !ValidateAddress((*iAddresseeList)[ii]))
{
failed |= KMsvMessagePartRecipient;
break;
}
}
}
}
return failed;
}
VOID
TransferFromMemToOutBufAndSend (
IN UINTN Length,
IN unsigned char *Address
)
{
// there are Length bytes and every byte is represented as 2 hex chars
CHAR8 OutBuffer[MAX_BUF_SIZE];
CHAR8 *OutBufPtr; // pointer to the output buffer
CHAR8 Char;
if (ValidateAddress(Address) == FALSE) {
SendError(14);
return;
}
OutBufPtr = OutBuffer;
while (Length > 0) {
Char = mHexToStr[*Address >> 4];
if ((Char >= 'A') && (Char <= 'F')) {
Char = Char - 'A' + 'a';
}
*OutBufPtr++ = Char;
Char = mHexToStr[*Address & 0x0f];
if ((Char >= 'A') && (Char <= 'F')) {
Char = Char - 'A' + 'a';
}
*OutBufPtr++ = Char;
Address++;
Length--;
}
*OutBufPtr = '\0' ; // the end of the buffer
SendPacket (OutBuffer);
}
BOOL
MulticastAccessControl::IsValidAddress(ULONG32 clientAddr)
{
return ValidateAddress(clientAddr);
}
void FunctionPass::AnalysisWorker(duint Start, duint End, std::vector<FunctionDef>* Blocks)
{
//
// Step 1: Use any defined functions in the PE function table
//
FindFunctionWorkerPrepass(Start, End, Blocks);
//
// Step 2: for each block that contains a CALL flag,
// add it to a local function start array
//
// NOTE: *Some* indirect calls are included
auto blockItr = std::next(m_MainBlocks.begin(), Start);
for(duint i = Start; i < End; i++, ++blockItr)
{
if(blockItr->GetFlag(BASIC_BLOCK_FLAG_CALL))
{
duint destination = blockItr->Target;
// Was it a pointer?
if(blockItr->GetFlag(BASIC_BLOCK_FLAG_INDIRPTR))
{
// Read it from memory
if(!MemRead(destination, &destination, sizeof(duint)))
continue;
// Validity check
if(!MemIsValidReadPtr(destination))
continue;
dprintf(QT_TRANSLATE_NOOP("DBG", "Indirect pointer: 0x%p 0x%p\n"), blockItr->Target, destination);
}
// Destination must be within analysis limits
if(!ValidateAddress(destination))
continue;
Blocks->push_back({ destination, 0, 0, 0, 0 });
}
}
//
// Step 3: Sort and remove duplicates
//
std::sort(Blocks->begin(), Blocks->end());
Blocks->erase(std::unique(Blocks->begin(), Blocks->end()), Blocks->end());
//
// Step 4: Find function ends
//
FindFunctionWorker(Blocks);
//
// Step 5: Find all orphaned blocks and repeat analysis process
//
// Starting from the first global block, scan until an "untouched" block is found
blockItr = std::next(m_MainBlocks.begin(), Start);
// Cached final block
BasicBlock* finalBlock = &m_MainBlocks.back();
duint virtEnd = 0;
for(duint i = Start; i < End; i++, ++blockItr)
{
if(blockItr->VirtualStart < virtEnd)
continue;
// Skip padding
if(blockItr->GetFlag(BASIC_BLOCK_FLAG_PAD))
continue;
// Is the block untouched?
if(blockItr->GetFlag(BASIC_BLOCK_FLAG_FUNCTION))
continue;
// Try to define a function
FunctionDef def { blockItr->VirtualStart, 0, 0, 0, 0 };
if(ResolveFunctionEnd(&def, finalBlock))
{
Blocks->push_back(def);
virtEnd = def.VirtualEnd;
}
}
}
int main(int argc, char *argv[])
{
fd_set master; // master file descriptor list
fd_set read_fds; // temp file descriptor list for select()
struct sockaddr_in remoteaddr; // client address
unsigned ServerPort; // portnumber of server
int fdmax,fdmax_used; // maximum file descriptor number and helper to find new max
int listener; // listening socket descriptor
int newfd; // newly accept()ed socket descriptor
char buf[256]; // buffer for client data
int nbytes;
int addrlen;
int i, j;
int NewClient; // NewClient ID
struct timeval timeout; // timeout
int ret;
struct ClientListType *ptrNewClient; // ptr to new & Active Client;
struct ClientListType *ptrClientRightList; // array which contains rights of reg.Clients
struct ActiveClientStructType ActiveClientStruct; // struct which contains array of active cl.
// some command line parsing
if (argc>1) { // first argument might be a port assignment
if (*argv[1]=='?') { // ask for help
printf("Usage : %s PortNum\n",argv[0]);
exit(EXIT_SUCCESS);
} else {
ServerPort=atol(argv[1]);
}
} else {
ServerPort=TCP_CLIENT_PORT;
}
// Init Client Access list
InitClientAccessList(ptrClientRightAscList, &ptrClientRightList);
// Init Active Client List
InitActiveClientStruct(&ActiveClientStruct);
printf("Setup instrument server version %s on port %d ...",VERSION, ServerPort);
listener=InitTCPListener(ServerPort);
if (listener<1) {
perror("TCPListener");
}
printf("success\n");
// setup master fd
FD_ZERO(&master); // clear the master and temp sets
FD_ZERO(&read_fds);
FD_SET(listener, &master); // add the listener to the master set
// keep track of the biggest file descriptor
fdmax = listener; // so far, it's this one
for(;;) { // main loop
// setup fd's timeout and wait for incoming request
read_fds = master;
timeout.tv_sec=TCP_CLIENT_WDG;
timeout.tv_usec=0;
ret=select(fdmax+1, &read_fds, NULL, NULL, &timeout);
if (ret == -1) { // select error we dare not to handle
perror("select");
exit(EXIT_FAILURE);
}
if (ret) { // lets see what we got
for(i = 0; i <= fdmax; i++) {
if (FD_ISSET(i, &read_fds)) { // new msg on i. socket ...
if (i == listener) { // listener -> new connection request
addrlen = sizeof(remoteaddr);
if ((newfd = accept(listener, (struct sockaddr *)&remoteaddr, // first we have to accept
&addrlen)) == -1) {
perror("accept");
} else {
//Valid client ?
if ( ((ptrNewClient=ValidateAddress(&remoteaddr,ptrClientRightList))!=NULL) ) {
//add new client to active list
if ((NewClient=AddClientToList(&ActiveClientStruct,ptrNewClient,newfd))<0) { // couldn't add Client to list;
printf("no available sockets for fd %d\n",newfd);
close(newfd); // close connection
} else { // give a positive msg to the log and keep track of maxfd
printf("accepted new connection from %s\n",
ActiveClientStruct.ptrActiveClientArray[NewClient].ClientName);
FD_SET(newfd, &master); // add to master set
if (newfd > fdmax) { // keep trackof the maximum
fdmax = newfd;
}
} // endif AddClient
} else { // couldn't find applicant in internal rights list, kick him out
close(newfd);
printf("deny access from %s closing..\n",inet_ntoa(remoteaddr.sin_addr));
} // endif ValidateAddress
} // endif accept
} else { // handle data from a clients
if ((nbytes = recv(i, buf, sizeof(buf), 0)) <= 0) { // got error or connection closed by client
if (nbytes == 0) { // connection closed
ret=RemoveClientFromList(&ActiveClientStruct,i);
printf("instrumentserver: %s on socket %d hung up\n",
ActiveClientStruct.ptrActiveClientArray[ret].ClientName, i);
} else {
perror("recv");
} // EndIf recv
close(i); // bye!
FD_CLR(i, &master); // remove from master set
} else { // we got some data from a client
// display whats in decimal for first
ParseMsg(buf,nbytes,&ActiveClientStruct);
for(j = 0; j <= fdmax; j++) {
// send to everyone
if (FD_ISSET(j, &master)) {
// except the listener and sender
if (j != listener && j != i) {
if (send(j, buf, nbytes, 0) == -1) {
perror("send");
} //endif send
} // sender and listener
} // someone in master list
} //endfor all clients
}
}
}
}
} else {
for (i = 0; i <= fdmax; i++) {
if (FD_ISSET(i,&master)) {
printf("+");
fdmax_used=i; // find out what the highest used fd is
} else {
printf(".");
}
}
printf("\n");
fdmax=fdmax_used; // garbage collection on max fdnum
}
} // for main loop
// release used memory
ReleaseActiveClientStruct(&ActiveClientStruct); // relase memory of ActiveClientStruct
ReleaseClientAccessList(ptrClientRightList); // relase memory of ClientRightList
return EXIT_SUCCESS;
}
void LinearPass::AnalysisOverlapWorker(duint Start, duint End, BBlockArray* Insertions)
{
// Comparison function to see if two blocks overlap
auto BlockOverlapsRemove = [](BasicBlock * A, BasicBlock * B) -> BasicBlock*
{
// Do the blocks overlap?
if(max(A->VirtualStart, B->VirtualStart) <= min((A->VirtualEnd - 1), (B->VirtualEnd - 1)))
{
// Return the block that should be removed
if(A->Size() > B->Size())
return B;
return A;
}
return nullptr;
};
// Get a pointer to pure data
const auto blocks = m_MainBlocks.data();
for(duint i = Start; i < End; i++)
{
const auto curr = &blocks[i];
const auto next = &blocks[i + 1];
// Current versus next (overlap -> delete)
BasicBlock* removal = BlockOverlapsRemove(curr, next);
if(removal)
removal->SetFlag(BASIC_BLOCK_FLAG_DELETE);
// Find blocks that need to be split in two because
// of CALL/JMP targets
//
// Find targets in the virtual range
if(ValidateAddress(curr->Target))
{
removal = FindBBlockInRange(curr->Target);
if(removal)
{
if(curr->GetFlag(BASIC_BLOCK_FLAG_CALL))
removal->SetFlag(BASIC_BLOCK_FLAG_CALL_TARGET);
// If the target does not equal the block start...
if(curr->Target != removal->VirtualStart)
{
// Mark for deletion
removal->SetFlag(BASIC_BLOCK_FLAG_DELETE);
// Block part 1
BasicBlock block1;
block1.VirtualStart = removal->VirtualStart;
block1.VirtualEnd = curr->Target;
block1.Target = 0;
block1.Flags = BASIC_BLOCK_FLAG_CUTOFF; // Attributes of the top half
block1.InstrCount = removal->InstrCount;
// Block part 2
BasicBlock block2;
block2.VirtualStart = curr->Target;
block2.VirtualEnd = removal->VirtualEnd;
block2.Target = removal->Target;
block2.Flags = removal->Flags; // Attributes of the bottom half (taken from original block)
block2.InstrCount = removal->InstrCount;
Insertions->push_back(block1);
Insertions->push_back(block2);
}
}
}
}
}
