From dc3e5c48380ff564df9a232b13e2cf1fab65f66d Mon Sep 17 00:00:00 2001 From: Volker Hilsheimer Date: Wed, 24 Apr 2019 17:06:15 +0200 Subject: Consolidate Unix and Windows implementations of QHostInfo::fromName The implementations were practically identical, so we can just move the code into qhostinfo.cpp, cleaning up things along the way. Since QHostInfoAgent is an internal class, add the shared code as additional static helper functions. And since half the code already used QCoreApplication::translate anyway, we can remove the QObject inheritance which was only added for getting a tr(). Change-Id: I58eafbdc3e7d06d2e898486a1add63cd63d98c96 Reviewed-by: Thiago Macieira --- src/network/kernel/qhostinfo.cpp | 168 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 168 insertions(+) (limited to 'src/network/kernel/qhostinfo.cpp') diff --git a/src/network/kernel/qhostinfo.cpp b/src/network/kernel/qhostinfo.cpp index d3fe85f5d5..9374728244 100644 --- a/src/network/kernel/qhostinfo.cpp +++ b/src/network/kernel/qhostinfo.cpp @@ -37,8 +37,11 @@ ** ****************************************************************************/ +//#define QHOSTINFO_DEBUG + #include "qhostinfo.h" #include "qhostinfo_p.h" +#include #include "QtCore/qscopedpointer.h" #include @@ -53,6 +56,15 @@ #ifdef Q_OS_UNIX # include +# include +# include +# if defined(AI_ADDRCONFIG) +# define Q_ADDRCONFIG AI_ADDRCONFIG +# endif +#elif defined Q_OS_WIN +# include + +# define QT_SOCKLEN_T int #endif QT_BEGIN_NAMESPACE @@ -412,6 +424,162 @@ QHostInfo QHostInfoAgent::fromName(const QString &hostName, QSharedPointer(&sa4); + saSize = sizeof(sa4); + memset(&sa4, 0, sizeof(sa4)); + sa4.sin_family = AF_INET; + sa4.sin_addr.s_addr = htonl(address.toIPv4Address()); + } else { + sa = reinterpret_cast(&sa6); + saSize = sizeof(sa6); + memset(&sa6, 0, sizeof(sa6)); + sa6.sin6_family = AF_INET6; + memcpy(&sa6.sin6_addr, address.toIPv6Address().c, sizeof(sa6.sin6_addr)); + } + + char hbuf[NI_MAXHOST]; + if (sa && getnameinfo(sa, saSize, hbuf, sizeof(hbuf), nullptr, 0, 0) == 0) + results.setHostName(QString::fromLatin1(hbuf)); + + if (results.hostName().isEmpty()) + results.setHostName(address.toString()); + results.setAddresses(QList() << address); + + return results; +} + +/* + Call getaddrinfo, and returns the results as QHostInfo::addresses +*/ +QHostInfo QHostInfoAgent::lookup(const QString &hostName) +{ + QHostInfo results; + + // IDN support + QByteArray aceHostname = QUrl::toAce(hostName); + results.setHostName(hostName); + if (aceHostname.isEmpty()) { + results.setError(QHostInfo::HostNotFound); + results.setErrorString(hostName.isEmpty() ? + QCoreApplication::translate("QHostInfoAgent", "No host name given") : + QCoreApplication::translate("QHostInfoAgent", "Invalid hostname")); + return results; + } + + addrinfo *res = 0; + struct addrinfo hints; + memset(&hints, 0, sizeof(hints)); + hints.ai_family = PF_UNSPEC; +#ifdef Q_ADDRCONFIG + hints.ai_flags = Q_ADDRCONFIG; +#endif + + int result = getaddrinfo(aceHostname.constData(), nullptr, &hints, &res); +# ifdef Q_ADDRCONFIG + if (result == EAI_BADFLAGS) { + // if the lookup failed with AI_ADDRCONFIG set, try again without it + hints.ai_flags = 0; + result = getaddrinfo(aceHostname.constData(), nullptr, &hints, &res); + } +# endif + + if (result == 0) { + addrinfo *node = res; + QList addresses; + while (node) { +#ifdef QHOSTINFO_DEBUG + qDebug() << "getaddrinfo node: flags:" << node->ai_flags << "family:" << node->ai_family + << "ai_socktype:" << node->ai_socktype << "ai_protocol:" << node->ai_protocol + << "ai_addrlen:" << node->ai_addrlen; +#endif + switch (node->ai_family) { + case AF_INET: { + QHostAddress addr; + addr.setAddress(ntohl(((sockaddr_in *) node->ai_addr)->sin_addr.s_addr)); + if (!addresses.contains(addr)) + addresses.append(addr); + break; + } + case AF_INET6: { + QHostAddress addr; + sockaddr_in6 *sa6 = (sockaddr_in6 *) node->ai_addr; + addr.setAddress(sa6->sin6_addr.s6_addr); + if (sa6->sin6_scope_id) + addr.setScopeId(QString::number(sa6->sin6_scope_id)); + if (!addresses.contains(addr)) + addresses.append(addr); + break; + } + default: + results.setError(QHostInfo::UnknownError); + results.setErrorString(QCoreApplication::translate("QHostInfoAgent", "Unknown address type")); + } + node = node->ai_next; + } + if (addresses.isEmpty()) { + // Reached the end of the list, but no addresses were found; this + // means the list contains one or more unknown address types. + results.setError(QHostInfo::UnknownError); + results.setErrorString(QCoreApplication::translate("QHostInfoAgent", "Unknown address type")); + } + + results.setAddresses(addresses); + freeaddrinfo(res); + } else { + switch (result) { +#ifdef Q_OS_WIN + case WSAHOST_NOT_FOUND: //authoritative not found + case WSATRY_AGAIN: //non authoritative not found + case WSANO_DATA: //valid name, no associated address +#else + case EAI_NONAME: + case EAI_FAIL: +# ifdef EAI_NODATA // EAI_NODATA is deprecated in RFC 3493 + case EAI_NODATA: +# endif +#endif + results.setError(QHostInfo::HostNotFound); + results.setErrorString(QCoreApplication::translate("QHostInfoAgent", "Host not found")); + break; + default: + results.setError(QHostInfo::UnknownError); +#ifdef Q_OS_WIN + results.setErrorString(QString::fromWCharArray(gai_strerror(result))); +#else + results.setErrorString(QString::fromLocal8Bit(gai_strerror(result))); +#endif + break; + } + } + +#if defined(QHOSTINFO_DEBUG) + if (results.error() != QHostInfo::NoError) { + qDebug("QHostInfoAgent::fromName(): error #%d %s", + h_errno, results.errorString().toLatin1().constData()); + } else { + QString tmp; + QList addresses = results.addresses(); + for (int i = 0; i < addresses.count(); ++i) { + if (i != 0) tmp += QLatin1String(", "); + tmp += addresses.at(i).toString(); + } + qDebug("QHostInfoAgent::fromName(): found %i entries for \"%s\": {%s}", + addresses.count(), aceHostname.constData(), + tmp.toLatin1().constData()); + } +#endif + + return results; +} /*! \enum QHostInfo::HostInfoError -- cgit v1.2.3