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947 lines
30 KiB
947 lines
30 KiB
/*
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* Copyright (C) 2003,2005 Thiago Macieira <thiago.macieira@kdemail.net>
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*
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
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* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef KRESOLVER_H
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#define KRESOLVER_H
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//////////////////
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// Needed includes
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#include <tqvaluelist.h>
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#include <tqobject.h>
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#include "tdesocketaddress.h"
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////////////////////////
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// Forward declarations
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struct sockaddr;
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class TQString;
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class TQCString;
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class TQStrList;
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//////////////////
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// Our definitions
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namespace KNetwork {
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namespace Internal { class KResolverManager; }
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class KResolverEntryPrivate;
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/** @class KResolverEntry kresolver.h kresolver.h
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* @brief One resolution entry.
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*
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* This class is one element in the resolution results list.
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* It contains the socket address for connecting, as well as
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* a bit more of information: the socket type, address family
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* and protocol numbers.
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*
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* This class contains all the information required for creating,
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* binding and connecting a socket.
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*
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* KResolverEntry objects implicitly share data, so copying them
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* is quite efficient.
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*
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* @author Thiago Macieira <thiago.macieira@kdemail.net>
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*/
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class TDECORE_EXPORT KResolverEntry
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{
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public:
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/**
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* Default constructor
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*
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*/
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KResolverEntry();
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/**
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* Constructs a new KResolverEntry from a TDESocketAddress
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* and other data.
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*
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* The TDESocketAddress @p addr parameter will be deep-copied.
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*
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* @param addr the address that was resolved
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* @param socktype the socket type of the resolved address
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* @param protocol the protocol of the resolved address
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* @param canonName the canonical name of the resolved hostname
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* @param encodedName the ASCII-compatible encoding of the hostname
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*/
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KResolverEntry(const TDESocketAddress& addr, int socktype, int protocol,
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const TQString& canonName = TQString::null,
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const TQCString& encodedName = TQCString());
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/**
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* Constructs a new KResolverEntry from raw forms of
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* socket addresses and other data.
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*
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* This constructor instead creates an internal TDESocketAddress object.
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*
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* @param sa the sockaddr structure containing the raw address
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* @param salen the length of the sockaddr structure
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* @param socktype the socket type of the resolved address
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* @param protocol the protocol of the resolved address
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* @param canonName the canonical name of the resolved hostname
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* @param encodedName the ASCII-compatible encoding of the hostname
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*/
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KResolverEntry(const struct sockaddr *sa, TQ_UINT16 salen, int socktype,
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int protocol, const TQString& canonName = TQString::null,
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const TQCString& encodedName = TQCString());
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/**
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* Copy constructor.
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*
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* This constructor performs a shallow-copy of the other object.
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*/
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KResolverEntry(const KResolverEntry &other);
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/**
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* Destructor.
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*
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* The destructor frees associated resources with this object. It does
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* not destroy shared data.
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*/
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~KResolverEntry();
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/**
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* Retrieves the socket address associated with this entry.
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*/
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TDESocketAddress address() const;
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/**
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* Retrieves the length of the socket address structure.
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*/
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TQ_UINT16 length() const;
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/**
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* Retrieves the family associated with this socket address.
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*/
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int family() const;
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/**
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* Retrieves the canonical name associated with this entry, if there is any.
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* If the canonical name was not found, this function returns TQString::null.
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*/
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TQString canonicalName() const;
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/**
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* Retrieves the encoded domain name associated with this entry, if there is
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* any. If this domain has been resolved through DNS, this will be the
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* the ACE-encoded hostname.
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*
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* Returns a null TQCString if such information is not available.
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*
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* Please note that this information is NOT to be presented to the user,
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* unless requested.
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*/
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TQCString encodedName() const;
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/**
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* Retrieves the socket type associated with this entry.
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*/
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int socketType() const;
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/**
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* Retrieves the protocol associated with this entry.
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*/
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int protocol() const;
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/**
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* Assignment operator
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*
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* This function copies the contents of the other object into this one.
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* Data will be shared between the two of them.
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*/
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KResolverEntry& operator=(const KResolverEntry& other);
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private:
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KResolverEntryPrivate* d;
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};
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class KResolverResultsPrivate;
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/**
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* @class KResolverResults kresolver.h kresolver.h
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* @brief Name and service resolution results.
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*
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* This object contains the results of a name and service resolution, as
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* those performed by @ref KResolver. It is also a descendant of TQValueList, so
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* you may use all its member functions here to access the elements.
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*
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* A KResolverResults object is associated with a resolution, so, in addition
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* to the resolved elements, you can also retrieve information about the
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* resolution process itself, like the nodename that was resolved or an error
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* code.
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*
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* Note Resolver also uses KResolverResults objects to indicate failure, so
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* you should test for failure.
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*
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* @author Thiago Macieira <thiago.macieira@kdemail.net>
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*/
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class TDECORE_EXPORT KResolverResults: public TQValueList<KResolverEntry>
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{
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public:
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/**
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* Default constructor.
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*
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* Constructs an empty list.
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*/
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KResolverResults();
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/**
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* Copy constructor
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*
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* Creates a new object with the contents of the other one. Data will be
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* shared by the two objects, like QValueList
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*/
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KResolverResults(const KResolverResults& other);
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/**
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* Destructor
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*
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* Destroys the object and frees associated resources.
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*/
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virtual ~KResolverResults();
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/**
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* Assignment operator
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*
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* Copies the contents of the other container into this one, discarding
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* our current values.
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*/
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KResolverResults& operator=(const KResolverResults& other);
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/**
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* Retrieves the error code associated with this resolution. The values
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* here are the same as in @ref KResolver::ErrorCodes.
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*/
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int error() const;
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/**
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* Retrieves the system error code, if any.
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* @see KResolver::systemError for more information
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*/
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int systemError() const;
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/**
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* Sets the error codes
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*
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* @param errorcode the error code in @ref KResolver::ErrorCodes
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* @param systemerror the system error code associated, if any
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*/
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void setError(int errorcode, int systemerror = 0);
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/**
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* The nodename to which the resolution was performed.
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*/
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TQString nodeName() const;
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/**
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* The service name to which the resolution was performed.
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*/
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TQString serviceName() const;
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/**
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* Sets the new nodename and service name
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*/
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void setAddress(const TQString& host, const TQString& service);
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protected:
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virtual void virtual_hook( int id, void* data );
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private:
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KResolverResultsPrivate* d;
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};
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class KResolverPrivate;
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/**
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* @class KResolver kresolver.h kresolver.h
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* @brief Name and service resolution class.
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*
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* This class provides support for doing name-to-binary resolution
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* for nodenames and service ports. You should use this class if you
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* need specific resolution techniques when creating a socket or if you
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* want to inspect the results before calling the socket functions.
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*
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* You can either create an object and set the options you want in it
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* or you can simply call the static member functions, which will create
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* standard Resolver objects and dispatch the resolution for you. Normally,
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* the static functions will be used, except in cases where specific options
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* must be set.
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*
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* A Resolver object defaults to the following:
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* @li address family: any address family
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* @li socket type: streaming socket
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* @li protocol: implementation-defined. Generally, TCP
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* @li host and service: unset
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*
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* @author Thiago Macieira <thiago.macieira@kdemail.net>
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*/
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class TDECORE_EXPORT KResolver: public TQObject
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{
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Q_OBJECT
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public:
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/**
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* Address family selection types
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*
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* These values can be OR-ed together to form a composite family selection.
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*
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* @li UnknownFamily: a family that is unknown to the current implementation
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* @li KnownFamily: a family that is known to the implementation (the exact
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* opposite of UnknownFamily)
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* @li AnyFamilies: any address family is acceptable
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* @li InternetFamily: an address for connecting to the Internet
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* @li InetFamily: alias for InternetFamily
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* @li IPv6Family: an IPv6 address only
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* @li IPv4Family: an IPv4 address only
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* @li UnixFamily: an address for the local Unix namespace (i.e., Unix sockets)
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* @li LocalFamily: alias for UnixFamily
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*/
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enum SocketFamilies
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{
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UnknownFamily = 0x0001,
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UnixFamily = 0x0002,
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LocalFamily = UnixFamily,
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IPv4Family = 0x0004,
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IPv6Family = 0x0008,
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InternetFamily = IPv4Family | IPv6Family,
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InetFamily = InternetFamily,
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KnownFamily = ~UnknownFamily,
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AnyFamily = KnownFamily | UnknownFamily
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};
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/**
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* Flags for the resolution.
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*
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* These flags are used for setting the resolution behaviour for this
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* object:
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* @li Passive: resolve to a passive socket (i.e., one that can be used for
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* binding to a local interface)
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* @li CanonName: request that the canonical name for the given nodename
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* be found and recorded
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* @li NoResolve: request that no external resolution be performed. The given
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* nodename and servicename will be resolved locally only.
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* @li NoSrv: don't try to use SRV-based name-resolution. (deprecated)
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* @li UseSrv: use SRV-based name resolution.
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* @li Multiport: the port/service argument is a list of port numbers and
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* ranges. (future extension)
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*
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* @note SRV-based lookup and Multiport are not implemented yet.
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*/
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enum Flags
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{
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Passive = 0x01,
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CanonName = 0x02,
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NoResolve = 0x04,
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NoSrv = 0x08,
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Multiport = 0x10,
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UseSrv = 0x20
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};
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/**
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* Error codes
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*
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* These are the possible error values that objects of this class
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* may return. See \ref errorString() for getting a string representation
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* for these errors.
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*
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* @li AddrFamily: Address family for the given nodename is not supported.
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* @li TryAgain: Temporary failure in name resolution. You should try again.
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* @li NonRecoverable: Non-recoverable failure in name resolution.
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* @li BadFlags: Invalid flags were given.
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* @li Memory: Memory allocation failure.
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* @li NoName: The specified name or service doesn't exist.
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* @li UnsupportedFamily: The requested socket family is not supported.
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* @li UnsupportedService: The requested service is not supported for this
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* socket type (i.e., a datagram service in a streaming socket).
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* @li UnsupportedSocketType: The requested socket type is not supported.
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* @li UnknownError: An unknown, unexpected error occurred.
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* @li SystemError: A system error occurred. See @ref systemError.
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* @li Canceled: This request was cancelled by the user.
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*/
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enum ErrorCodes
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{
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// note: if you change this enum, take a look at KResolver::errorString
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NoError = 0,
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AddrFamily = -1,
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TryAgain = -2,
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NonRecoverable = -3,
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BadFlags = -4,
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Memory = -5,
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NoName = -6,
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UnsupportedFamily = -7,
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UnsupportedService = -8,
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UnsupportedSocketType = -9,
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UnknownError = -10,
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SystemError = -11,
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Canceled = -100
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};
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/**
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* Status codes.
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*
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* These are the possible status for a Resolver object. A value
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* greater than zero indicates normal behaviour, while negative
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* values either indicate failure or error.
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*
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* @li Idle: resolution has not yet been started.
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* @li Queued: resolution is queued but not yet in progress.
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* @li InProgress: resolution is in progress.
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* @li PostProcessing: resolution is in progress.
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* @li Success: resolution is done; you can retrieve the results.
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* @li Canceled: request cancelled by the user.
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* @li Failed: resolution is done, but failed.
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*
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* Note: the status Canceled and the error code Canceled are the same.
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*
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* Note 2: the status Queued and InProgress might not be distinguishable.
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* Some implementations might not differentiate one from the other.
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*/
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enum StatusCodes
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{
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Idle = 0,
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Queued = 1,
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InProgress = 5,
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PostProcessing = 6,
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Success = 10,
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//Canceled = -100, // already defined above
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Failed = -101
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};
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/**
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* Default constructor.
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*
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* Creates an empty Resolver object. You should set the wanted
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* names and flags using the member functions before starting
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* the name resolution.
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*/
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KResolver(TQObject * = 0L, const char * = 0L);
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/**
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* Constructor with host and service names.
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*
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* Creates a Resolver object with the given host and
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* service names. Flags are initialised to 0 and any address family
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* will be accepted.
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*
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* @param nodename The host name we want resolved.
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* @param servicename The service name associated, like "http".
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*/
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KResolver(const TQString& nodename, const TQString& servicename = TQString::null,
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TQObject * = 0L, const char * = 0L);
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/**
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* Destructor.
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*
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* When this object is deleted, it'll destroy all associated
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* resources. If the resolution is still in progress, it will be
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* cancelled and the signal will \b not be emitted.
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*/
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virtual ~KResolver();
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/**
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* Retrieve the current status of this object.
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*
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* @see StatusCodes for the possible status codes.
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*/
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int status() const;
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/**
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* Retrieve the error code in this object.
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*
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* This function will return NoError if we are not in
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* an error condition. See @ref status and @ref StatusCodes to
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* find out what the current status is.
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*
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|
* @see errorString for getting a textual representation of
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* this error
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*/
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int error() const;
|
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|
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/**
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* Retrieve the associated system error code in this object.
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*
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* Many resolution operations may generate an extra error code
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* as given by the C errno variable. That value is stored in the
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* object and can be retrieved by this function.
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*/
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int systemError() const;
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|
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/**
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* Returns the textual representation of the error in this object.
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*/
|
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inline TQString errorString() const
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{ return errorString(error(), systemError()); }
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|
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/**
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|
* Returns true if this object is currently running
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|
*/
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bool isRunning() const;
|
|
|
|
/**
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|
* The nodename to which the resolution was/is to be performed.
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|
*/
|
|
TQString nodeName() const;
|
|
|
|
/**
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|
* The service name to which the resolution was/is to be performed.
|
|
*/
|
|
TQString serviceName() const;
|
|
|
|
/**
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|
* Sets the nodename for the resolution.
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|
*
|
|
* Set the nodename to TQString::null to unset it.
|
|
* @param nodename The nodename to be resolved.
|
|
*/
|
|
void setNodeName(const TQString& nodename);
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|
|
/**
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|
* Sets the service name to be resolved.
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*
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* Set it to TQString::null to unset it.
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|
* @param service The service to be resolved.
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|
*/
|
|
void setServiceName(const TQString& service);
|
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|
|
/**
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|
* Sets both the host and the service names.
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|
*
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|
* Setting either value to TQString::null will unset them.
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|
* @param node The nodename
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* @param service The service name
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|
*/
|
|
void setAddress(const TQString& node, const TQString& service);
|
|
|
|
/**
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|
* Retrieves the flags set for the resolution.
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|
*
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|
* @see Flags for an explanation on what flags are possible
|
|
*/
|
|
int flags() const;
|
|
|
|
/**
|
|
* Sets the flags.
|
|
*
|
|
* @param flags the new flags
|
|
* @return the old flags
|
|
* @see Flags for an explanation on the flags
|
|
*/
|
|
int setFlags(int flags);
|
|
|
|
/**
|
|
* Sets the allowed socket families.
|
|
*
|
|
* @param families the families that we want/accept
|
|
* @see SocketFamilies for possible values
|
|
*/
|
|
void setFamily(int families);
|
|
|
|
/**
|
|
* Sets the socket type we want.
|
|
*
|
|
* The values for the @p type parameter are the SOCK_*
|
|
* constants, defined in <sys/socket.h>. The most common
|
|
* values are:
|
|
* @li SOCK_STREAM streaming socket (= reliable, sequenced,
|
|
* connection-based)
|
|
* @li SOCK_DGRAM datagram socket (= unreliable, connectionless)
|
|
* @li SOCK_RAW raw socket, with direct access to the
|
|
* container protocol (such as IP)
|
|
*
|
|
* These three are the only values to which it is guaranteed that
|
|
* resolution will work. Some systems may define other constants (such as
|
|
* SOCK_RDM for reliable datagrams), but support is implementation-defined.
|
|
*
|
|
* @param type the wanted socket type (SOCK_* constants). Set
|
|
* 0 to use the default.
|
|
*/
|
|
void setSocketType(int type);
|
|
|
|
/**
|
|
* Sets the protocol we want.
|
|
*
|
|
* Protocols are dependant on the selected address family, so you should know
|
|
* what you are doing if you use this function. Besides, protocols generally
|
|
* are either stream-based or datagram-based, so the value of the socket
|
|
* type is also important. The resolution will fail if these values don't match.
|
|
*
|
|
* When using an Internet socket, the values for the protocol are the
|
|
* IPPROTO_* constants, defined in <netinet/in.h>.
|
|
*
|
|
* You may choose to set the protocol either by its number or by its name, or
|
|
* by both. If you set:
|
|
* @li the number and the name: both values will be stored internally; you
|
|
* may set the name to an empty value, if wanted
|
|
* @li the number only (name = NULL): the name will be searched in the
|
|
* protocols database
|
|
* @li the name only (number = 0): the number will be searched in the
|
|
* database
|
|
* @li neither name nor number: reset to default behaviour
|
|
*
|
|
* @param protonum the protocol number we want
|
|
* @param name the protocol name
|
|
*/
|
|
void setProtocol(int protonum, const char *name = 0L);
|
|
|
|
/**
|
|
* Starts the name resolution asynchronously.
|
|
*
|
|
* This function will queue this object for resolution
|
|
* and will return immediately. The status upon exit will either be
|
|
* Queued or InProgress or Failed.
|
|
*
|
|
* This function does nothing if the object is already queued. But if
|
|
* it had already succeeded or failed, this function will re-start it.
|
|
*
|
|
* Note: if both the nodename and the servicename are unset, this function
|
|
* will not queue, but will set a success state and emit the signal. Also
|
|
* note that in this case and maybe others, the signal @ref finished might
|
|
* be emitted before this function returns.
|
|
*
|
|
* @return true if this request was successfully queued for asynchronous
|
|
* resolution
|
|
*/
|
|
bool start();
|
|
|
|
/**
|
|
* Waits for a request to finish resolving.
|
|
*
|
|
* This function will wait on a running request for its termination. The
|
|
* status upon exit will either be Success or Failed or Canceled.
|
|
*
|
|
* This function may be called from any thread, even one that is not the
|
|
* GUI thread or the one that started the resolution process. But note this
|
|
* function is not thread-safe nor reentrant: i.e., only one thread can be
|
|
* waiting on one given object.
|
|
*
|
|
* Also note that this function ensures that the @ref finished signal is
|
|
* emitted before it returns. That means that, as a side-effect, whenever
|
|
* wait() is called, the signal is emitted on the thread calling wait().
|
|
*
|
|
* @param msec the time to wait, in milliseconds or 0 to
|
|
* wait forever
|
|
* @return true if the resolution has finished processing, even when it
|
|
* failed or was canceled. False means the wait timed out and
|
|
* the resolution is still running.
|
|
*/
|
|
bool wait(int msec = 0);
|
|
|
|
/**
|
|
* Cancels a running request
|
|
*
|
|
* This function will cancel a running request. If the request is not
|
|
* currently running or queued, this function does nothing.
|
|
*
|
|
* Note: if you tell the signal to be emitted, be aware that it might
|
|
* or might not be emitted before this function returns.
|
|
*
|
|
* @param emitSignal whether to emit the @ref finished signal or not
|
|
*/
|
|
void cancel(bool emitSignal = true);
|
|
|
|
/**
|
|
* Retrieves the results of this resolution
|
|
*
|
|
* Use this function to retrieve the results of the resolution. If no
|
|
* data was resolved (yet) or if we failed, this function will return
|
|
* an empty object.
|
|
*
|
|
* @return the resolved data
|
|
* @see status for information on finding out if the resolution was successful
|
|
*/
|
|
KResolverResults results() const;
|
|
|
|
/**
|
|
* Handles events. Reimplemented from TQObject.
|
|
*
|
|
* This function handles the events generated by the manager indicating that
|
|
* this object has finished processing.
|
|
*
|
|
* Do not post events to this object.
|
|
*/
|
|
virtual bool event(TQEvent*);
|
|
|
|
signals:
|
|
// signals
|
|
|
|
/**
|
|
* This signal is emitted whenever the resolution is finished, one
|
|
* way or another (success or failure). The @p results parameter
|
|
* will contain the resolved data.
|
|
*
|
|
* Note: if you are doing multiple resolutions, you can use the
|
|
* TQObject::sender() function to distinguish one Resolver object from
|
|
* another.
|
|
*
|
|
* @param results the resolved data; might be empty if the resolution
|
|
* failed
|
|
* @see results for information on what the results are
|
|
*
|
|
* @note This signal is @b always delivered in the GUI event thread, even for
|
|
* resolutions that were started in secondary threads.
|
|
*/
|
|
void finished(KResolverResults results);
|
|
|
|
private:
|
|
void emitFinished();
|
|
|
|
public:
|
|
// Static functions
|
|
|
|
/**
|
|
* Returns the string representation of this error code.
|
|
*
|
|
* @param errorcode the error code. See @ref ErrorCodes.
|
|
* @param syserror the system error code associated.
|
|
* @return the string representation. This is already
|
|
* i18n'ed.
|
|
*/
|
|
static TQString errorString(int errorcode, int syserror = 0);
|
|
|
|
/**
|
|
* Resolve the nodename and service name synchronously
|
|
*
|
|
* This static function is provided as convenience for simplifying
|
|
* name resolution. It resolves the given host and service names synchronously
|
|
* and returns the results it found. It is equivalent to the following code:
|
|
*
|
|
* \code
|
|
* KResolver qres(host, service);
|
|
* qres.setFlags(flags);
|
|
* qres.setFamily(families)
|
|
* qres.start();
|
|
* qres.wait();
|
|
* return qres.results();
|
|
* \endcode
|
|
*
|
|
* @param host the nodename to resolve
|
|
* @param service the service to resolve
|
|
* @param flags flags to be used
|
|
* @param families the families to be searched
|
|
* @return a KResolverResults object containing the results
|
|
* @see KResolverResults for information on how to obtain the error code
|
|
*/
|
|
static KResolverResults resolve(const TQString& host, const TQString& service,
|
|
int flags = 0, int families = KResolver::InternetFamily);
|
|
|
|
/**
|
|
* Start an asynchronous name resolution
|
|
*
|
|
* This function is provided as a convenience to simplify the resolution
|
|
* process. It creates an internal KResolver object, connects the
|
|
* @ref finished signal to the given slot and starts the resolution
|
|
* asynchronously. It is more or less equivalent to the following code:
|
|
*
|
|
* \b Note: this function may trigger the signal before it returns, so
|
|
* your code must be prepared for this situation.
|
|
*
|
|
* \code
|
|
* KResolver* qres = new KResolver(host, service);
|
|
* TQObject::connect(qres, TQT_SIGNAL(finished(KResolverResults)),
|
|
* userObj, userSlot);
|
|
* qres->setFlags(flags);
|
|
* qres->setFamily(families);
|
|
* return qres->start();
|
|
* \endcode
|
|
*
|
|
* You should use it like this in your code:
|
|
* \code
|
|
* KResolver::resolveAsync(myObj, TQT_SLOT(mySlot(KResolverResults)), host, service);
|
|
* \endcode
|
|
*
|
|
* @param userObj the object whose slot @p userSlot we will connect
|
|
* @param userSlot the slot to which we'll connect
|
|
* @param host the nodename to resolve
|
|
* @param service the service to resolve
|
|
* @param flags flags to be used
|
|
* @param families families to be searcheed
|
|
* @return true if the queueing was successful, false if not
|
|
* @see KResolverResults for information on how to obtain the error code
|
|
*/
|
|
static bool resolveAsync(TQObject* userObj, const char *userSlot,
|
|
const TQString& host, const TQString& service,
|
|
int flags = 0, int families = KResolver::InternetFamily);
|
|
|
|
/**
|
|
* Returns the domain name in an ASCII Compatible Encoding form, suitable
|
|
* for DNS lookups. This is the base for International Domain Name support
|
|
* over the Internet.
|
|
*
|
|
* Note this function may fail, in which case it'll return a null
|
|
* TQCString. Reasons for failure include use of unknown code
|
|
* points (Unicode characters).
|
|
*
|
|
* Note that the encoding is illegible and, thus, should not be presented
|
|
* to the user, except if requested.
|
|
*
|
|
* @param unicodeDomain the domain name to be encoded
|
|
* @return the ACE-encoded suitable for DNS queries if successful, a null
|
|
* TQCString if failure.
|
|
*/
|
|
static TQCString domainToAscii(const TQString& unicodeDomain);
|
|
|
|
/**
|
|
* Does the inverse of @ref domainToAscii and return an Unicode domain
|
|
* name from the given ACE-encoded domain.
|
|
*
|
|
* This function may fail if the given domain cannot be successfully
|
|
* converted back to Unicode. Reasons for failure include a malformed
|
|
* domain name or good ones whose reencoding back to ACE don't match
|
|
* the form given here (e.g., ACE-encoding of an already
|
|
* ASCII-compatible domain).
|
|
*
|
|
* It is, however, guaranteed that domains returned
|
|
* by @ref domainToAscii will work.
|
|
*
|
|
* @param asciiDomain the ACE-encoded domain name to be decoded
|
|
* @return the Unicode representation of the given domain name
|
|
* if successful, the original string if not
|
|
* @note ACE = ASCII-Compatible Encoding, i.e., 7-bit
|
|
*/
|
|
static TQString domainToUnicode(const TQCString& asciiDomain);
|
|
|
|
/**
|
|
* The same as above, but taking a TQString argument.
|
|
*
|
|
* @param asciiDomain the ACE-encoded domain name to be decoded
|
|
* @return the Unicode representation of the given domain name
|
|
* if successful, TQString::null if not.
|
|
*/
|
|
static TQString domainToUnicode(const TQString& asciiDomain);
|
|
|
|
/**
|
|
* Normalise a domain name.
|
|
*
|
|
* In order to prevent simple mistakes in International Domain
|
|
* Names (IDN), it has been decided that certain code points
|
|
* (characters in Unicode) would be instead converted to others.
|
|
* This includes turning them all to lower case, as well certain
|
|
* other specific operations, as specified in the documents.
|
|
*
|
|
* For instance, the German 'ß' will be changed into 'ss', while
|
|
* the micro symbol 'µ' will be changed to the Greek mu 'μ'.
|
|
*
|
|
* Two equivalent domains have the same normalised form. And the
|
|
* normalised form of a normalised domain is itself (i.e., if
|
|
* d is normalised, the following is true: d == normalizeDomain(d) )
|
|
*
|
|
* This operation is equivalent to encoding and the decoding a Unicode
|
|
* hostname.
|
|
*
|
|
* @param domain a domain to be normalised
|
|
* @return the normalised domain, or TQString::null if the domain is
|
|
* invalid.
|
|
*/
|
|
static TQString normalizeDomain(const TQString& domain);
|
|
|
|
/**
|
|
* Resolves a protocol number to its names
|
|
*
|
|
* Note: the returned TQStrList operates on deep-copies.
|
|
*
|
|
* @param protonum the protocol number to be looked for
|
|
* @return all the protocol names in a list. The first is the "proper"
|
|
* name.
|
|
*/
|
|
static TQStrList protocolName(int protonum);
|
|
|
|
/**
|
|
* Finds all aliases for a given protocol name
|
|
*
|
|
* @param protoname the protocol name to be looked for
|
|
* @return all the protocol names in a list. The first is the "proper"
|
|
* name.
|
|
*/
|
|
static TQStrList protocolName(const char *protoname);
|
|
|
|
/**
|
|
* Resolves a protocol name to its number
|
|
*
|
|
* @param protoname the protocol name to be looked for
|
|
* @return the protocol number or -1 if we couldn't locate it
|
|
*/
|
|
static int protocolNumber(const char *protoname);
|
|
|
|
/**
|
|
* Resolves a service name to its port number
|
|
*
|
|
* @param servname the service name to be looked for
|
|
* @param protoname the protocol it is associated with
|
|
* @return the port number in host byte-order or -1 in case of error
|
|
*/
|
|
static int servicePort(const char *servname, const char *protoname);
|
|
|
|
/**
|
|
* Finds all the aliases for a given service name
|
|
*
|
|
* Note: the returned TQStrList operates on deep-copies.
|
|
*
|
|
* @param servname the service alias to be looked for
|
|
* @param protoname the protocol it is associated with
|
|
* @return all the service names in a list. The first is the "proper"
|
|
* name.
|
|
*/
|
|
static TQStrList serviceName(const char *servname, const char *protoname);
|
|
|
|
/**
|
|
* Resolves a port number to its names
|
|
*
|
|
* Note: the returned TQStrList operates on deep copies.
|
|
*
|
|
* @param port the port number, in host byte-order
|
|
* @param protoname the protocol it is associated with
|
|
* @return all the service names in a list. The first is the "proper"
|
|
* name.
|
|
*/
|
|
static TQStrList serviceName(int port, const char *protoname);
|
|
|
|
/**
|
|
* Returns this machine's local hostname.
|
|
*
|
|
* @return this machine's local hostname
|
|
* @since 3.5
|
|
*/
|
|
static TQString localHostName();
|
|
|
|
protected:
|
|
|
|
/**
|
|
* Sets the error codes
|
|
*/
|
|
void setError(int errorcode, int systemerror = 0);
|
|
|
|
virtual void virtual_hook( int id, void* data );
|
|
private:
|
|
KResolverPrivate* d;
|
|
friend class KResolverResults;
|
|
friend class ::KNetwork::Internal::KResolverManager;
|
|
|
|
static TQStringList *idnDomains;
|
|
};
|
|
|
|
} // namespace KNetwork
|
|
|
|
#endif
|