C / C++ / MFC

Re: How to use Namespaces created in different projects in the same solution?

1-Apr-08 6:21

Grettings everyone, today im dealing with Crypto552 created by Wei Dai.
im converting a project my father did long ago. since we think different i didnt want to have all the crypto files spread across my solution so i created a project for them.

in my visual studio 8 solution i have 2 projects: CRYPTO (In wich the cryptography solucion is written in c++) and builds perfectly; ZEUS08 (Wich is the project thats gonna have the conversion of what my father did in C++) both projects are in C++

inside CRYPTO theres a namespace called CryptoPP. (NAMESPACE_BEGIN(CryptoPP)) wich is in all the files .h and.cpp
since im copying parts from the last version im having some problems.

the most important one is:

im trying to use the namespace CryptoPP in ZEUS08 but it wont allow me...
i have tried
USING_NAMESPACE(CryptoPP);
using namespace CryptoPP;

but it keeps telling me:

error C2781 : 'CryptoPP' : a namespace with this name does not exist

does anybody have an idea why it tortures me with that nonsense?, i mean the project is in my solution why it wont recognize it?
help would be apreciated.

led mike1-Apr-08 6:51

Re: How to use Namespaces created in different projects in the same solution? [modified]

1-Apr-08 6:51

pabloraul wrote:
NAMESPACE_BEGIN

what the heck is that?

pabloraul wrote:
i mean the project is in my solution why it wont recognize it?

That means nothing. You have to have the namespace header file included for the compiler to know about the namespace.

led mike

pabloraul1-Apr-08 7:02

Re: How to use Namespaces created in different projects in the same solution?

1-Apr-08 7:02

about the NAMESPACE_BEGIN(CryptoPP), i really dont know. the compiler understands that it its the beggining of the namespace and at the end of the file theres a NAMESPACE_END. when i look at the object browser it has something like this:

CRYPTO
{}CryptoPP //meaning that cryptopp is inside crypto
{}Std

about including the header file of the namespace, i dont now which one since every file of the class has that thing inside...

by the way, i cant even include the files of CRYPTO into de files of ZEUS
example:
#include "config.h" //cannot include file, no such file or directory

modified on Tuesday, April 1, 2008 1:13 PM

led mike1-Apr-08 7:13

Re: How to use Namespaces created in different projects in the same solution?

1-Apr-08 7:13

pabloraul wrote:
i dont now which one since every file of the class has that thing inside

Well you have to include every header file that defines any class that you want to use anyway. If you are really this confused about header files and namespaces you might need to learn a little more about C++ fundamentals before attempting your project.

led mike

pabloraul1-Apr-08 7:23

Re: How to use Namespaces created in different projects in the same solution?

1-Apr-08 7:23

that would be perfect but try explaining that to my dad.

lets try this example:
file structure:
CRYPTO
-config.h
ZEUS08
-myfile.cpp

config.h

NAMESPACE_BEGIN(CryptoPP)<br />
<br />
typedef unsigned short word16;<br />
typedef unsigned int word32;<br />
<br />
#if defined(__GNUC__) || defined(__MWERKS__) || defined(__SUNPRO_CC)<br />
	#define WORD64_AVAILABLE<br />
	typedef unsigned long long word64;<br />
	#define W64LIT(x) x##LL<br />
#elif defined(_MSC_VER) || defined(__BORLANDC__)<br />
	#define WORD64_AVAILABLE<br />
	typedef unsigned __int64 word64;<br />
	#define W64LIT(x) x##ui64<br />
#endif

since it has the definition for W64LIT i decided to include it.

so i put into my file
#include "config.h"

but it gives me fatal error C1083: Cannot open include file: 'config.h': no such file or directory

would u please help me with that or give me a link to c++ basics¿?

Mark Salsbery1-Apr-08 7:34

Re: How to use Namespaces created in different projects in the same solution?

1-Apr-08 7:34

pabloraul wrote:
but it gives me fatal error C1083: Cannot open include file: 'config.h': no such file or directory

Looks like a n include path problem, not a namespace problem.

I'm still curious what the NAMESPACE_BEGIN macro expands to...

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

pabloraul1-Apr-08 8:12

Re: How to use Namespaces created in different projects in the same solution?

1-Apr-08 8:12

include path problem, im gonna research about that.

about the namespace begin im gonna post few of the files for you to see at least how its supposed to work. wei dai wrote it somehow and it works, i just need to use that library in order to use cryptography in my solution.

here is a picture of the object browser for you to see that CryptoPP is a namespace

argnames.h

#ifndef CRYPTOPP_ARGNAMES_H<br />
#define CRYPTOPP_ARGNAMES_H<br />
<br />
#include "cryptlib.h"<br />
<br />
NAMESPACE_BEGIN(CryptoPP)<br />
<br />
DOCUMENTED_NAMESPACE_BEGIN(Name)<br />
<br />
#define CRYPTOPP_DEFINE_NAME_STRING(name)	inline const char *name() {return #name;}<br />
<br />
CRYPTOPP_DEFINE_NAME_STRING(ValueNames)			//!< string, a list of value names with a semicolon (';') after each name<br />
CRYPTOPP_DEFINE_NAME_STRING(Version)			//!< int<br />
CRYPTOPP_DEFINE_NAME_STRING(Seed)				//!< ConstByteArrayParameter<br />
CRYPTOPP_DEFINE_NAME_STRING(Key)				//!< ConstByteArrayParameter<br />
CRYPTOPP_DEFINE_NAME_STRING(IV)					//!< const byte *<br />
CRYPTOPP_DEFINE_NAME_STRING(StolenIV)			//!< byte *<br />
CRYPTOPP_DEFINE_NAME_STRING(Rounds)				//!< int<br />
CRYPTOPP_DEFINE_NAME_STRING(FeedbackSize)		//!< int<br />
CRYPTOPP_DEFINE_NAME_STRING(WordSize)			//!< int, in bytes<br />
CRYPTOPP_DEFINE_NAME_STRING(BlockSize)			//!< int, in bytes<br />
CRYPTOPP_DEFINE_NAME_STRING(EffectiveKeyLength)	//!< int, in bits<br />
CRYPTOPP_DEFINE_NAME_STRING(KeySize)			//!< int, in bits<br />
CRYPTOPP_DEFINE_NAME_STRING(ModulusSize)		//!< int, in bits<br />
CRYPTOPP_DEFINE_NAME_STRING(SubgroupOrderSize)	//!< int, in bits<br />
CRYPTOPP_DEFINE_NAME_STRING(PrivateExponentSize)//!< int, in bits<br />
CRYPTOPP_DEFINE_NAME_STRING(Modulus)			//!< Integer<br />
CRYPTOPP_DEFINE_NAME_STRING(PublicExponent)		//!< Integer<br />
CRYPTOPP_DEFINE_NAME_STRING(PrivateExponent)	//!< Integer<br />
CRYPTOPP_DEFINE_NAME_STRING(PublicElement)		//!< Integer<br />
CRYPTOPP_DEFINE_NAME_STRING(SubgroupOrder)		//!< Integer<br />
CRYPTOPP_DEFINE_NAME_STRING(Cofactor)			//!< Integer<br />
CRYPTOPP_DEFINE_NAME_STRING(SubgroupGenerator)	//!< Integer, ECP::Point, or EC2N::Point<br />
CRYPTOPP_DEFINE_NAME_STRING(Curve)				//!< ECP or EC2N<br />
CRYPTOPP_DEFINE_NAME_STRING(GroupOID)			//!< OID<br />
CRYPTOPP_DEFINE_NAME_STRING(PointerToPrimeSelector)		//!< const PrimeSelector *<br />
CRYPTOPP_DEFINE_NAME_STRING(Prime1)				//!< Integer<br />
CRYPTOPP_DEFINE_NAME_STRING(Prime2)				//!< Integer<br />
CRYPTOPP_DEFINE_NAME_STRING(ModPrime1PrivateExponent)	//!< Integer<br />
CRYPTOPP_DEFINE_NAME_STRING(ModPrime2PrivateExponent)	//!< Integer<br />
CRYPTOPP_DEFINE_NAME_STRING(MultiplicativeInverseOfPrime2ModPrime1)	//!< Integer<br />
CRYPTOPP_DEFINE_NAME_STRING(QuadraticResidueModPrime1)	//!< Integer<br />
CRYPTOPP_DEFINE_NAME_STRING(QuadraticResidueModPrime2)	//!< Integer<br />
CRYPTOPP_DEFINE_NAME_STRING(PutMessage)			//!< bool<br />
CRYPTOPP_DEFINE_NAME_STRING(TruncatedDigestSize)	//!< int<br />
CRYPTOPP_DEFINE_NAME_STRING(HashVerificationFilterFlags)		//!< word32<br />
CRYPTOPP_DEFINE_NAME_STRING(SignatureVerificationFilterFlags)	//!< word32<br />
CRYPTOPP_DEFINE_NAME_STRING(InputBuffer)		//!< ConstByteArrayParameter<br />
CRYPTOPP_DEFINE_NAME_STRING(OutputBuffer)		//!< ByteArrayParameter<br />
CRYPTOPP_DEFINE_NAME_STRING(InputFileName)		//!< const char *<br />
CRYPTOPP_DEFINE_NAME_STRING(InputStreamPointer)	//!< std::istream *<br />
CRYPTOPP_DEFINE_NAME_STRING(InputBinaryMode)	//!< bool<br />
CRYPTOPP_DEFINE_NAME_STRING(OutputFileName)		//!< const char *<br />
CRYPTOPP_DEFINE_NAME_STRING(OutputStreamPointer)	//!< std::ostream *<br />
CRYPTOPP_DEFINE_NAME_STRING(OutputBinaryMode)	//!< bool<br />
CRYPTOPP_DEFINE_NAME_STRING(EncodingParameters)	//!< ConstByteArrayParameter<br />
CRYPTOPP_DEFINE_NAME_STRING(KeyDerivationParameters)	//!< ConstByteArrayParameter<br />
CRYPTOPP_DEFINE_NAME_STRING(Separator)			//< ConstByteArrayParameter<br />
CRYPTOPP_DEFINE_NAME_STRING(Terminator)			//< ConstByteArrayParameter<br />
CRYPTOPP_DEFINE_NAME_STRING(Uppercase)			//< bool<br />
CRYPTOPP_DEFINE_NAME_STRING(GroupSize)			//< int<br />
CRYPTOPP_DEFINE_NAME_STRING(Pad)				//< bool<br />
CRYPTOPP_DEFINE_NAME_STRING(PaddingByte)		//< byte<br />
CRYPTOPP_DEFINE_NAME_STRING(Log2Base)			//< int<br />
CRYPTOPP_DEFINE_NAME_STRING(EncodingLookupArray)	//< const byte *<br />
CRYPTOPP_DEFINE_NAME_STRING(DecodingLookupArray)	//< const byte *<br />
CRYPTOPP_DEFINE_NAME_STRING(InsertLineBreaks)	//< bool<br />
CRYPTOPP_DEFINE_NAME_STRING(MaxLineLength)		//< int<br />
CRYPTOPP_DEFINE_NAME_STRING(DigestSize)			//!< int, in bytes<br />
CRYPTOPP_DEFINE_NAME_STRING(L1KeyLength)		//!< int, in bytes<br />
<br />
DOCUMENTED_NAMESPACE_END<br />
<br />
NAMESPACE_END<br />
<br />
#endif<br />

aes.h

#ifndef CRYPTOPP_AES_H<br />
#define CRYPTOPP_AES_H<br />
<br />
#include "rijndael.h"<br />
<br />
NAMESPACE_BEGIN(CryptoPP)<br />
<br />
//! AES winner, announced on 10/2/2000<br />
DOCUMENTED_TYPEDEF(Rijndael, AES);<br />
<br />
typedef RijndaelEncryption AESEncryption;<br />
typedef RijndaelDecryption AESDecryption;<br />
<br />
NAMESPACE_END<br />
<br />
#endif

basecode.h

#ifndef CRYPTOPP_BASECODE_H<br />
#define CRYPTOPP_BASECODE_H<br />
<br />
#include "filters.h"<br />
#include "algparam.h"<br />
#include "argnames.h"<br />
<br />
NAMESPACE_BEGIN(CryptoPP)<br />
<br />
//! base n encoder, where n is a power of 2<br />
class CRYPTOPP_DLL BaseN_Encoder : public Unflushable<Filter><br />
{<br />
public:<br />
	BaseN_Encoder(BufferedTransformation *attachment=NULL)<br />
		{Detach(attachment);}<br />
<br />
	BaseN_Encoder(const byte *alphabet, int log2base, BufferedTransformation *attachment=NULL, int padding=-1)<br />
	{<br />
		Detach(attachment);<br />
		IsolatedInitialize(MakeParameters(Name::EncodingLookupArray(), alphabet)<br />
			(Name::Log2Base(), log2base)<br />
			(Name::Pad(), padding != -1)<br />
			(Name::PaddingByte(), byte(padding)));<br />
	}<br />
<br />
	void IsolatedInitialize(const NameValuePairs &parameters);<br />
	size_t Put2(const byte *begin, size_t length, int messageEnd, bool blocking);<br />
<br />
private:<br />
	const byte *m_alphabet;<br />
	int m_padding, m_bitsPerChar, m_outputBlockSize;<br />
	int m_bytePos, m_bitPos;<br />
	SecByteBlock m_outBuf;<br />
};<br />
<br />
//! base n decoder, where n is a power of 2<br />
class CRYPTOPP_DLL BaseN_Decoder : public Unflushable<Filter><br />
{<br />
public:<br />
	BaseN_Decoder(BufferedTransformation *attachment=NULL)<br />
		{Detach(attachment);}<br />
<br />
	BaseN_Decoder(const int *lookup, int log2base, BufferedTransformation *attachment=NULL)<br />
	{<br />
		Detach(attachment);<br />
		IsolatedInitialize(MakeParameters(Name::DecodingLookupArray(), lookup)(Name::Log2Base(), log2base));<br />
	}<br />
<br />
	void IsolatedInitialize(const NameValuePairs &parameters);<br />
	size_t Put2(const byte *begin, size_t length, int messageEnd, bool blocking);<br />
<br />
	static void CRYPTOPP_API InitializeDecodingLookupArray(int *lookup, const byte *alphabet, unsigned int base, bool caseInsensitive);<br />
<br />
private:<br />
	const int *m_lookup;<br />
	int m_padding, m_bitsPerChar, m_outputBlockSize;<br />
	int m_bytePos, m_bitPos;<br />
	SecByteBlock m_outBuf;<br />
};<br />
<br />
//! filter that breaks input stream into groups of fixed size<br />
class CRYPTOPP_DLL Grouper : public Bufferless<Filter><br />
{<br />
public:<br />
	Grouper(BufferedTransformation *attachment=NULL)<br />
		{Detach(attachment);}<br />
<br />
	Grouper(int groupSize, const std::string &separator, const std::string &terminator, BufferedTransformation *attachment=NULL)<br />
	{<br />
		Detach(attachment);<br />
		IsolatedInitialize(MakeParameters(Name::GroupSize(), groupSize)<br />
			(Name::Separator(), ConstByteArrayParameter(separator))<br />
			(Name::Terminator(), ConstByteArrayParameter(terminator)));<br />
	}<br />
<br />
	void IsolatedInitialize(const NameValuePairs &parameters);<br />
	size_t Put2(const byte *begin, size_t length, int messageEnd, bool blocking);<br />
<br />
private:<br />
	SecByteBlock m_separator, m_terminator;<br />
	size_t m_groupSize, m_counter;<br />
};<br />
<br />
NAMESPACE_END<br />
<br />
#endif<br />

and a cpp
algparam.cpp

// algparam.cpp - written and placed in the public domain by Wei Dai<br />
<br />
#include "pch.h"<br />
<br />
#ifndef CRYPTOPP_IMPORTS<br />
<br />
#include "algparam.h"<br />
<br />
NAMESPACE_BEGIN(CryptoPP)<br />
<br />
PAssignIntToInteger g_pAssignIntToInteger = NULL;<br />
<br />
bool CombinedNameValuePairs::GetVoidValue(const char *name, const std::type_info &valueType, void *pValue) const<br />
{<br />
	if (strcmp(name, "ValueNames") == 0)<br />
		return m_pairs1.GetVoidValue(name, valueType, pValue) && m_pairs2.GetVoidValue(name, valueType, pValue);<br />
	else<br />
		return m_pairs1.GetVoidValue(name, valueType, pValue) || m_pairs2.GetVoidValue(name, valueType, pValue);<br />
}<br />
<br />
bool AlgorithmParametersBase::GetVoidValue(const char *name, const std::type_info &valueType, void *pValue) const<br />
{<br />
	if (strcmp(name, "ValueNames") == 0)<br />
	{<br />
		ThrowIfTypeMismatch(name, typeid(std::string), valueType);<br />
		GetParent().GetVoidValue(name, valueType, pValue);<br />
		(*reinterpret_cast<std::string *>(pValue) += m_name) += ";";<br />
		return true;<br />
	}<br />
	else if (strcmp(name, m_name) == 0)<br />
	{<br />
		AssignValue(name, valueType, pValue);<br />
		m_used = true;<br />
		return true;<br />
	}<br />
	else<br />
		return GetParent().GetVoidValue(name, valueType, pValue);<br />
}<br />
<br />
NAMESPACE_END<br />
<br />
#endif

Mark Salsbery1-Apr-08 8:42

Re: How to use Namespaces created in different projects in the same solution?

1-Apr-08 8:42

pabloraul wrote:
include path problem, im gonna research about that.

That's absolutely necessary, since any other problems will be un-fixable until you can successfully include the header files you need.

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

pabloraul1-Apr-08 8:44

Re: How to use Namespaces created in different projects in the same solution?

1-Apr-08 8:44

by the way, do you have any interesting link about including? cant find anything useful yet...

Mark Salsbery1-Apr-08 9:14

Re: How to use Namespaces created in different projects in the same solution?

1-Apr-08 9:14

The #include Directive[^]

The first sentence says it all Smile | :)

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

pabloraul1-Apr-08 9:28

Re: How to use Namespaces created in different projects in the same solution?

1-Apr-08 9:28

yay! thenks Mark, that was the answer i was looking for, ill code it later since i have to go out. take care everyone

led mike1-Apr-08 8:54

Re: How to use Namespaces created in different projects in the same solution?

1-Apr-08 8:54

zzzzzzzzzzzzzzzzzzzt

What's that sound I hear? Seems familiar. This is almost reel interesting Unsure | :~

led mike

led mike1-Apr-08 7:48

Re: How to use Namespaces created in different projects in the same solution?

1-Apr-08 7:48

pabloraul wrote:
that would be perfect but try explaining that to my dad.

Give him the keyboard and I will. Is he the one telling you that you don't need to learn how to do C++ development to do C++ development? Who ever is telling you that is wrong. If you try to Internet Forum your way through this project it's going to take you like 1000 times longer than it would if you just stopped and learned C++ fundamentals first and then did the project. Also after you are done you will have learned about a 1 tenth of what you would had you spent the time actually focusing on learning fundamentals rather than focusing on getting the project done.

led mike

Nemanja Trifunovic1-Apr-08 9:08

Nemanja Trifunovic

1-Apr-08 9:08

led mike wrote:
NAMESPACE_BEGIN

what the heck is that?

Some compilers introduced namespaces pretty recently (gcc, for instance), and some libraries are using such macros to take this into account. Xerces-C is doing something similar.

Programming Blog

utf8-cpp

Re: How to use Namespaces created in different projects in the same solution?

led mike1-Apr-08 9:40

what is the difference in winInet functions and sockets for connecting to ftp servers

1-Apr-08 9:40

Thanks

led mike

Jach Mullan1-Apr-08 3:55

Jach Mullan

1-Apr-08 3:55

hi, i am creating a ftp program using winInet in win32... in non asynchronous mode(no callback). it is connecting and when i use the ftpgetcurrentdirectory then return value whether true or false is immediate but actually the operation takes some time... how to detect whether the function has ended or not...? i dont want to use callbacks for this... but what i did was i used a timer to check the buffer whether the function returned any string... i feel this aint a proper way... and when i used the asynchronous mode i used a callback function in that there are many defined constants for which the compiler says undefined symbol... i am using dev-c++ IDE bu including the needed library in my project...

the call back function is called for opening and connecting to the server but not when i use the ftp_ functions... i am toggling between various methods to acheive some positive result but there wasnt a favorable result... phew and then i tried to use sockets like i used it for my own http request to my server... what will be the better way to use sockets to connect to the ftp server??? oh this line is the actual purpose of this big explanation... so this is my problem... so i am calling this command : CTRL + A and F1 ...

Re: what is the difference in winInet functions and sockets for connecting to ftp servers

led mike1-Apr-08 4:21

Re: what is the difference in winInet functions and sockets for connecting to ftp servers

1-Apr-08 4:21

Jach Mullan wrote:
then return value whether true or false is immediate but actually the operation takes some time

I don't know what that means. If you make a blocking call it is complete when it returns, period.

led mike

Mark Salsbery1-Apr-08 6:09