lib("dnsapi")

Hi,

Im currently making an new DNS Server, But QT does give the follow error's while compiling:

Quote:

---

dnsserv\dnssrv_win.cpp(10) : error C2059: syntax error : '('
dnsserv\dnssrv_win.cpp(12) : error C2059: syntax error : '('
dnsserv\dnssrv_win.cpp(19) : error C2065: 'DNS_QUERY' : undeclared identifier
dnsserv\dnssrv_win.cpp(19) : error C2146: syntax error : missing ';' before identifier 'dnsQuery'
dnsserv\dnssrv_win.cpp(19) : error C2065: 'dnsQuery' : undeclared identifier
dnsserv\dnssrv_win.cpp(19) : error C2146: syntax error : missing ';' before identifier 'lib'
dnsserv\dnssrv_win.cpp(20) : error C2065: 'DNS_FREE' : undeclared identifier
dnsserv\dnssrv_win.cpp(20) : error C2146: syntax error : missing ';' before identifier 'dnsFree'
dnsserv\dnssrv_win.cpp(20) : error C2065: 'dnsFree' : undeclared identifier
dnsserv\dnssrv_win.cpp(20) : error C2146: syntax error : missing ';' before identifier 'lib'
dnsserv\dnssrv_win.cpp(27) : error C3861: 'dnsQuery': identifier not found
dnsserv\dnssrv_win.cpp(47) : error C3861: 'dnsFree': identifier not found
Generating Code...

NMAKE : fatal error U1077: 'cl' : return code '0x2'
Stop.
NMAKE : fatal error U1077: '"C:\Program Files\Microsoft Visual Studio 8\VC\BIN\nmake.exe"' : return code '0x2'
Stop.
NMAKE : fatal error U1077: 'cd' : return code '0x2'
Stop.

---

The source file is currently:

Code:

---

#include "dnssrv.h"
#include <QLibrary>
#include <windows.h>
#include <windns.h>
 
#ifndef DNS_QUERY_SRV
#define DNS_QUERY_SRV 0x0021
#endif
 
typedef DNS_STATUS WINAPI (*DNS_QUERY)(PCSTR, WORD, DWORD, PIP4_ARRAY, PDNS_RECORD *, PVOID *);
typedef void WINAPI (*DNS_FREE)(PVOID, DNS_FREE_TYPE);
 
QList<DnsSrv::Server> DnsSrv::resolve(const QString &name)
{
	QList<DnsSrv::Server> servers;
 
	QLibrary lib("dnsapi");
	DNS_QUERY dnsQuery = (DNS_QUERY) lib.resolve("DnsQuery_UTF8");
	DNS_FREE dnsFree = (DNS_FREE) lib.resolve("DnsFree");
	if (dnsQuery == NULL || dnsFree == NULL) {
		qDebug("Windows does not support DnsQuery");
		goto failed;
	}
 
	PDNS_RECORD rr;
	if (dnsQuery(name.toUtf8(), DNS_QUERY_SRV,
		DNS_QUERY_STANDARD, NULL, &rr, NULL) != 0)
		goto failed;
 
	name.toLower();
	for (PDNS_RECORD p = rr; p != NULL; p = p->pNext) {
		if (p->wType != DNS_QUERY_SRV ||
			QString((char *) p->pName).toLower() != name)
			continue;
 
		DNS_SRV_DATA *srv = &p->Data.Srv;
 
		DnsSrv::Server res;
		res.ttl = p->dwTtl;
		res.priority = srv->wPriority;
		res.weight = srv->wWeight;
		res.port = srv->wPort;
		res.target = (char *) srv->pNameTarget;
		servers.append(res);
	}
	dnsFree(rr, DnsFreeRecordList);
 
failed:
	lib.unload();
	return servers;
}

---

How do I fix those error's? Im with my hands in my hair. Thank you.

Does windns.h define DNS_QUERY and DNS_FREE?

This is really dump, I get confused. Stupid heh?

This is my header file:

Code:

---

#ifndef DNSSRV_H
#define DNSSRV_H
 
#include <QThread>
#include <QList>
 
class DnsSrv : public QThread {
	Q_OBJECT
public:
	class Server {
	public:
		Server();
		bool operator <(const Server &rr) const;
		bool operator ==(const Server &rr) const;
 
		QString target;
		int ttl;
		int port;
		int priority;
		int weight;
	};
 
	DnsSrv(QObject *parent = 0);
	virtual ~DnsSrv();
 
	void query(const QString &name);
	QList<Server> getResults() { return servers; }
 
signals:
	void resultsReady();
 
private:
	virtual void run();
	QList<Server> resolve(const QString &name);
 
	QString targetName;
	QList<Server> servers;
};
 
#endif

---

The compile gives now:

Quote:

---

1>dnssrv.obj : error LNK2019: unresolved external symbol "private: class QList<class DnsSrv::Server> __thiscall DnsSrv::resolve(class QString const &)" (?resolve@DnsSrv@@AAE?AV?$QList@VServer@DnsSrv@@@@ ABVQString@@@Z) referenced in function "private: virtual void __thiscall DnsSrv::run(void)" (?run@DnsSrv@@EAEXXZ)

---

Im stupid, I've posted another header file that was included in dnssrv_win.cpp.

Anyway, this is the windns.h file you asked for, Its zipped because the file was too large to post here. I cannot find directly the define's of DNS_FREE and DNS_QUERY.

The follow error appears when compiling now:

Quote:

---

QList<DnsSrv::Server> DnsSrv::resolve(const QString &name)

---

I'm not really a WinAPI expert so I don't know about possible side effects it causes but this at least compiles for me as soon as I comment out the WINAPI part:

Code:

---

// main.cpp
#include <windows.h>
#include <windns.h>
 
typedef DNS_STATUS /*WINAPI*/ (*DNS_QUERY)(PCSTR, WORD, DWORD, PIP4_ARRAY, PDNS_RECORD *, PVOID *);
typedef void /*WINAPI*/ (*DNS_FREE)(PVOID, DNS_FREE_TYPE);
 
int main()
{
}

---

Well, I've did what you've tested right now, Seems to be not working now.

There's in dnssrv_win.cpp a couple of compile errors:

Quote:

---

1>------ Build started: Project: dnsserv, Configuration: Release Win32 ------
1>Compiling...
1>dnssrv_win.cpp
1>.\dnsserv\dnssrv_win.cpp(10) : error C2143: syntax error : missing ';' before '__stdcall'
1>.\dnsserv\dnssrv_win.cpp(10) : error C4430: missing type specifier - int assumed. Note: C++ does not support default-int
1>.\dnsserv\dnssrv_win.cpp(10) : error C2059: syntax error : '('
1>.\dnsserv\dnssrv_win.cpp(11) : error C2059: syntax error : '('
1>.\dnsserv\dnssrv_win.cpp(18) : error C2065: 'DNS_QUERY' : undeclared identifier
1>.\dnsserv\dnssrv_win.cpp(18) : error C2146: syntax error : missing ';' before identifier 'dnsQuery'
1>.\dnsserv\dnssrv_win.cpp(18) : error C2065: 'dnsQuery' : undeclared identifier
1>.\dnsserv\dnssrv_win.cpp(18) : error C2146: syntax error : missing ';' before identifier 'lib'
1>.\dnsserv\dnssrv_win.cpp(19) : error C2065: 'DNS_FREE' : undeclared identifier
1>.\dnsserv\dnssrv_win.cpp(19) : error C2146: syntax error : missing ';' before identifier 'dnsFree'
1>.\dnsserv\dnssrv_win.cpp(19) : error C2065: 'dnsFree' : undeclared identifier
1>.\dnsserv\dnssrv_win.cpp(19) : error C2146: syntax error : missing ';' before identifier 'lib'
1>.\dnsserv\dnssrv_win.cpp(25) : error C2065: 'PDNS_RECORD' : undeclared identifier
1>.\dnsserv\dnssrv_win.cpp(25) : error C2146: syntax error : missing ';' before identifier 'rr'
1>.\dnsserv\dnssrv_win.cpp(25) : error C2065: 'rr' : undeclared identifier
1>.\dnsserv\dnssrv_win.cpp(27) : error C2065: 'DNS_QUERY_STANDARD' : undeclared identifier
1>.\dnsserv\dnssrv_win.cpp(26) : error C3861: 'dnsQuery': identifier not found
1>.\dnsserv\dnssrv_win.cpp(31) : error C2146: syntax error : missing ';' before identifier 'p'
1>.\dnsserv\dnssrv_win.cpp(31) : error C2065: 'p' : undeclared identifier
1>.\dnsserv\dnssrv_win.cpp(31) : error C2146: syntax error : missing ')' before identifier 'p'
1>.\dnsserv\dnssrv_win.cpp(31) : error C2059: syntax error : ';'
1>.\dnsserv\dnssrv_win.cpp(31) : error C2227: left of '->pNext' must point to class/struct/union/generic type
1> type is ''unknown-type''
1>.\dnsserv\dnssrv_win.cpp(31) : error C2059: syntax error : ')'
1>.\dnsserv\dnssrv_win.cpp(31) : error C2143: syntax error : missing ';' before '{'
1>.\dnsserv\dnssrv_win.cpp(32) : error C2227: left of '->wType' must point to class/struct/union/generic type
1> type is ''unknown-type''
1>.\dnsserv\dnssrv_win.cpp(33) : error C2227: left of '->pName' must point to class/struct/union/generic type
1> type is ''unknown-type''
1>.\dnsserv\dnssrv_win.cpp(33) : error C2228: left of '.toLower' must have class/struct/union
1>.\dnsserv\dnssrv_win.cpp(34) : error C2044: illegal continue
1>.\dnsserv\dnssrv_win.cpp(36) : error C2065: 'DNS_SRV_DATA' : undeclared identifier
1>.\dnsserv\dnssrv_win.cpp(36) : error C2065: 'srv' : undeclared identifier
1>.\dnsserv\dnssrv_win.cpp(36) : error C2227: left of '->Data' must point to class/struct/union/generic type
1> type is ''unknown-type''
1>.\dnsserv\dnssrv_win.cpp(36) : error C2228: left of '.Srv' must have class/struct/union
1>.\dnsserv\dnssrv_win.cpp(39) : error C2227: left of '->dwTtl' must point to class/struct/union/generic type
1> type is ''unknown-type''
1>.\dnsserv\dnssrv_win.cpp(40) : error C2227: left of '->wPriority' must point to class/struct/union/generic type
1> type is ''unknown-type''
1>.\dnsserv\dnssrv_win.cpp(41) : error C2227: left of '->wWeight' must point to class/struct/union/generic type
1> type is ''unknown-type''
1>.\dnsserv\dnssrv_win.cpp(42) : error C2227: left of '->wPort' must point to class/struct/union/generic type
1> type is ''unknown-type''
1>.\dnsserv\dnssrv_win.cpp(43) : error C2227: left of '->pNameTarget' must point to class/struct/union/generic type
1> type is ''unknown-type''
1>.\dnsserv\dnssrv_win.cpp(46) : error C2065: 'DnsFreeRecordList' : undeclared identifier
1>.\dnsserv\dnssrv_win.cpp(46) : error C3861: 'dnsFree': identifier not found
1>dnsserv - 39 error(s), 0 warning(s)
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

---

Agian olso the modified source file:

Code:

---

#include "dnssrv.h"
#include <QLibrary>
#include <windows.h>
 
 
#ifndef DNS_QUERY_SRV
#define DNS_QUERY_SRV 0x0021
#endif
 
typedef DNS_STATUS WINAPI (*DNS_QUERY)(PCSTR, WORD, DWORD, PIP4_ARRAY, PDNS_RECORD *, PVOID *);
typedef void WINAPI (*DNS_FREE)(PVOID, DNS_FREE_TYPE);
 
QList<DnsSrv::Server> DnsSrv::resolve(const QString &name)
{
	QList<DnsSrv::Server> servers;
 
	QLibrary lib("dnsapi");
	DNS_QUERY dnsQuery = (DNS_QUERY) lib.resolve("DnsQuery_UTF8");
	DNS_FREE dnsFree = (DNS_FREE) lib.resolve("DnsFree");
	if (dnsQuery == NULL || dnsFree == NULL) {
		qDebug("Windows does not support DnsQuery");
		goto failed;
	}
 
	PDNS_RECORD rr;
	if (dnsQuery(name.toUtf8(), DNS_QUERY_SRV,
		DNS_QUERY_STANDARD, NULL, &rr, NULL) != 0)
		goto failed;
 
	name.toLower();
	for (PDNS_RECORD p = rr; p != NULL; p = p->pNext) {
		if (p->wType != DNS_QUERY_SRV ||
			QString((char *) p->pName).toLower() != name)
			continue;
 
		DNS_SRV_DATA *srv = &p->Data.Srv;
 
		DnsSrv::Server res;
		res.ttl = p->dwTtl;
		res.priority = srv->wPriority;
		res.weight = srv->wWeight;
		res.port = srv->wPort;
		res.target = (char *) srv->pNameTarget;
		servers.append(res);
	}
	dnsFree(rr, DnsFreeRecordList);
 
failed:
	lib.unload();
	return servers;
}

---

Maybe this oucld help solving you something?

Huh? I don't see anything else changed but you left the required <windns.h> header out?

My mistake haha, When I include <windns.h> there are 4 error's (Mainly define's maybe?) and when I remove the include. I get 39 error's.

I've included the <windns.h> file and now this is the result:

Quote:

---

1>------ Build started: Project: dnsserv, Configuration: Release Win32 ------
1>Compiling...
1>dnssrv_win.cpp
1>.\dnsserv\dnssrv_win.cpp(24) : error C2143: syntax error : missing ';' before '='
1>.\dnsserv\dnssrv_win.cpp(25) : error C2143: syntax error : missing ';' before '='
1>.\dnsserv\dnssrv_win.cpp(26) : error C2059: syntax error : '=='
1>.\dnsserv\dnssrv_win.cpp(26) : error C2143: syntax error : missing ';' before '{'
1>dnsserv - 4 error(s), 0 warning(s)
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

---

The file looks like this:

Code:

---

#include <QLibrary>
#include "dnssrv.h"
#include <windows.h>
#include <windns.h>
 
#define DNS_QUERY
#define DNS_FREE
 
#define dnsFree
#define dnsQuery
 
#ifndef DNS_QUERY_SRV
#define DNS_QUERY_SRV 0x0021
#endif
 
//typedef DNS_STATUS WINAPI (*DNS_QUERY)(PCSTR, WORD, DWORD, PIP4_ARRAY, PDNS_RECORD *, PVOID *);
//typedef void WINAPI (*DNS_FREE)(PVOID, DNS_FREE_TYPE);
 
QList<DnsSrv::Server> DnsSrv::resolve(const QString &name)
{
	QList<DnsSrv::Server> servers;
 
	QLibrary lib("dnsapi");
	DNS_QUERY dnsQuery = (DNS_QUERY) lib.resolve("DnsQuery_UTF8");
	DNS_FREE dnsFree = (DNS_FREE) lib.resolve("DnsFree");
	if (dnsQuery == NULL || dnsFree == NULL) {
		qDebug("Windows does not support DnsQuery");
		goto failed;
	}
 
	PDNS_RECORD rr;
	if (dnsQuery(name.toUtf8(), DNS_QUERY_SRV,
		DNS_QUERY_STANDARD, NULL, &rr, NULL) != 0)
		goto failed;
 
	name.toLower();
	for (PDNS_RECORD p = rr; p != NULL; p = p->pNext) {
		if (p->wType != DNS_QUERY_SRV ||
			QString((char *) p->pName).toLower() != name)
			continue;
 
		DNS_SRV_DATA *srv = &p->Data.Srv;
 
		DnsSrv::Server res;
		res.ttl = p->dwTtl;
		res.priority = srv->wPriority;
		res.weight = srv->wWeight;
		res.port = srv->wPort;
		res.target = (char *) srv->pNameTarget;
		servers.append(res);
	}
	dnsFree(rr, DnsFreeRecordList);
 
failed:
	lib.unload();
	return servers;
}

---

Take a new look at post #5. They're used as function pointers so you can't replace them with empty defines.

Mhh. That would return me 6 errors.

Okay. After some hours of testing and headers and stuff the follow situation is here:

My source file is as follow right now:

Code:

---

#include <QLibrary>
#include "dnssrv.h"
#include <windows.h>
#include <windns.h>
 
#ifdef DNS_QUERY
#define dnsQuery
#warning DNS_QUERY is already defined.
#endif
 
#ifdef DNS_FREE
#define dnsFree
#warning DNS_FREE is already defined.
#endif
 
#ifndef DNS_QUERY_SRV
#define DNS_QUERY_SRV 0x0021
#endif
 
// typedef DNS_STATUS WINAPI (*DNS_QUERY)(PCSTR, WORD, DWORD, PIP4_ARRAY, PDNS_RECORD *, PVOID *);
// typedef void WINAPI (*DNS_FREE)(PVOID, DNS_FREE_TYPE);
typedef DNS_STATUS WINAPI (*)(PCSTR, WORD, DWORD, PIP4_ARRAY, PDNS_RECORD *, PVOID *)
 
QList<DnsSrv::Server> DnsSrv::resolve(const QString &name)
{
	QList<DnsSrv::Server> servers;
 
	QLibrary lib("dnsapi");
	DNS_QUERY dnsQuery = (DNS_QUERY) lib.resolve("DnsQuery_UTF8");
	DNS_FREE dnsFree = (DNS_FREE) lib.resolve("DnsFree");
	if (dnsQuery == NULL || dnsFree == NULL) {
		qDebug("Windows does not support DnsQuery");
		goto failed;
	}
 
	PDNS_RECORD rr;
	if (dnsQuery(name.toUtf8(), DNS_QUERY_SRV,
		DNS_QUERY_STANDARD, NULL, &rr, NULL) != 0)
		goto failed;
 
	name.toLower();
	for (PDNS_RECORD p = rr; p != NULL; p = p->pNext) {
		if (p->wType != DNS_QUERY_SRV ||
			QString((char *) p->pName).toLower() != name)
			continue;
 
		DNS_SRV_DATA *srv = &p->Data.Srv;
 
		DnsSrv::Server res;
		res.ttl = p->dwTtl;
		res.priority = srv->wPriority;
		res.weight = srv->wWeight;
		res.port = srv->wPort;
		res.target = (char *) srv->pNameTarget;
		servers.append(res);
	}
	dnsFree(rr, DnsFreeRecordList);
 
failed:
	lib.unload();
	return servers;
}

---

Compiling log:

Code:

---

1>------ Build started: Project: dnssrv, Configuration: Release Win32 ------
1>Compiling...
1>dnssrv_win.cpp
1>.\dnssrv\dnssrv_win.cpp(22) : error C2059: syntax error : '('
1>.\dnssrv\dnssrv_win.cpp(25) : error C2143: syntax error : missing ';' before '{'
1>.\dnssrv\dnssrv_win.cpp(25) : error C2447: '{' : missing function header (old-style formal list?)
1>dnssrv - 3 error(s), 0 warning(s)
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========

---