diff options
Diffstat (limited to 'src/VSession.cpp')
| -rw-r--r-- | src/VSession.cpp | 356 |
1 files changed, 356 insertions, 0 deletions
diff --git a/src/VSession.cpp b/src/VSession.cpp new file mode 100644 index 0000000..76e13b0 --- /dev/null +++ b/src/VSession.cpp @@ -0,0 +1,356 @@ +/* + * Copyright (c) 2010,2011 - RZ Uni Freiburg + * Copyright (c) 2010,2011 - OpenSLX Project + * + * This program/file is free software distributed under the GPL version 2. + * See http://gpl.openslx.org/ + * + * If you have any feedback please consult http://feedback.openslx.org/ and + * send your feedback to feedback@openslx.org + * + * General information about OpenSLX - libChooser can be found under + * http://openslx.org + * + */ + +#include <QtXml> +#include <QDir> +#include <QApplication> +#include <QProcess> +#include <QDate> +#include <QStringList> +#include <QTextStream> +#if 0 +#include <QHostInfo> // available since Qt 4.7 +#endif +#include <limits> // for HOST_NAME_MAX +#include <unistd.h> // for gethostname(), getuid() +#include <sys/types.h> // for getuid, getpwuid +#include <pwd.h> // for getpwuid +//#include "globals.h" + +#include "VSession.h" +#include "VSessionHandler.h" + +bool VSession::debugMode = false; + +VSession::VSession(VSessionHandler *parent) { + sessionHandler = parent; +} + +bool VSession::init(const QString& xml, const QString& baseDirPath) { + this->baseDirPath_ = baseDirPath; + _process = new QProcess(); + return this->doc_.setContent(xml); +} + +void VSession::addNodeWithAttribute(const QString& nodeName, + const QString& value, + const QString& attribute, + bool replace) { + QDomElement node = + this->doc_.namedItem("eintrag").namedItem(nodeName).toElement(); + + if (replace == false || node.isNull()) { + // create a new node + node = this->doc_.createElement(nodeName); + this->doc_.namedItem("eintrag").appendChild(node); + } + + node.setAttribute(attribute, value); +} + +QString VSession::icon() const { + QString icon(getAttribute("icon")); + if (icon.isEmpty()) { + if (imgtype() == VMWARE) icon = "vmware"; + else if (imgtype() == VBOX) icon = "virtualbox"; + else icon = "unknown"; + } else if (icon.contains(".") && QDir::isRelativePath(icon)) { + // non-built-in icon with relative path + icon.prepend(baseDirPath_ + "/"); + } + return icon; + } + +QString VSession::screenshot() const { + QString ret; + ret = getAttribute("screenshot"); +// qDebug() << ret; + if (ret.size() > 0) { + ret.prepend(baseDirPath_ + "/"); + ret.prepend("file://"); + return ret; + } + return QString("qrc:/img/noscreenshot"); +}; + + +QString VSession::toXml() const { + QDomDocument doc; + doc.appendChild(doc.createElement("settings")); + + doc.firstChild().appendChild(doc.importNode(doc_.documentElement(), true)); + + QDomNode xmlNode = doc.createProcessingInstruction( + "xml", "version=\"1.0\" encoding=\"UTF-8\""); + doc.insertBefore(xmlNode, doc.firstChild()); + + return doc.toString(); +} + +QString VSession::getAttribute(const QString &nodeName, + const QString &attribute) const { + QDomDocument doc = this->doc_; + QDomNode n = doc.namedItem("eintrag").namedItem(nodeName); + return this->doc_.namedItem("eintrag").namedItem(nodeName).toElement() + .attribute(attribute); +} + +QString VSession::getNodeText(const QString& nodeName) const { + QString str; + QTextStream stream(&str); + QDomNode node = this->doc_.namedItem("eintrag").namedItem(nodeName).toElement(); + node.save(stream, 4); + +// return this->doc_.namedItem("eintrag").namedItem(nodeName).toElement().text(); + return str; +} + +ImgType VSession::imgtype() const { + QString s(getAttribute("virtualmachine")); + + if (s.compare("vmware") == 0) { + return VMWARE; + } else if (s.compare("virtualbox") == 0 || s.compare("vbox") == 0) { + return VBOX; + } else { + return OTHER; + } +} + +bool VSession::isActive() const { + QString value(getAttribute("active")); + + if (value.compare("false") == 0) { + return false; + } else if (value.count("/") == 1) { + // try to interpret value as date range + // [YYYY-MM-DD]/[YYYY-MM-DD] + // eg. "1970-01-01/1971-01-01" from Jan 1st 1970 till Jan 1st 1971 + // "/1971-01-01" till Jan 1st 1971 + // "1970-01-01/" from Jan 1st 1970 + // "/" allways + // note: invalid dates are treated as empty dates + + QStringList list(value.split("/")); + QString from(list.value(0)); + QString till(list.value(1)); + QDate fromDate(QDate::fromString(from, Qt::ISODate)); + QDate tillDate(QDate::fromString(till, Qt::ISODate)); + + QDate today(QDate::currentDate()); + + if (fromDate.isValid() && fromDate > today) { + // fromDate is in the future + if (debugMode) qDebug() << "Not active. Reason: fromDate is in the future"; + return false; + } + + if (tillDate.isValid() && tillDate < today) { + // tillDate is in the past + if (debugMode) qDebug() << "Not active. Reason: tillDate is in the past"; + return false; + } + } + + if (sessionHandler->hasEnv()) { + QStringList pools = getAttribute("pools").split("\\s*,\\s*"); + if (!pools.isEmpty() && !pools.contains(sessionHandler->getEnv())) { + // pools does not contain pool + if (debugMode) qDebug() << "Not active. Reason: vsession is not part of active env"; + return false; + } + } + + return true; +} + +bool VSession::isLocked() const { + // default to false + return getAttribute("locked").compare("true") == 0; +} + +bool VSession::isValid() const { + // default to false + return QFile::exists(QString(this->baseDirPath_).append("/").append(getAttribute("image_name"))); +} + +int VSession::priority() const { + return getAttribute("priority").toInt(); +} + + +void VSession::addPrinters(const QString& script, const QString& type) { + QDomElement printersNode = + this->doc_.namedItem("eintrag").namedItem(type + "s").toElement(); + + if (printersNode.isNull()) { + // create new printers node + printersNode = this->doc_.createElement(type + "s"); + this->doc_.namedItem("eintrag").appendChild(printersNode); + } + + QProcess addPrintersScript; + addPrintersScript.start(script, QIODevice::ReadOnly); + while (!addPrintersScript.atEnd()) { + QString line(addPrintersScript.readLine()); + QStringList tokens(line.split("\t")); + + if (tokens.size() < 2 or tokens.size() > 3) { + // TODO error message + // invalid output of printerScript + // printserver\tprinter\tprinter description + continue; + } + + QDomElement printerNode(doc_.createElement(type)); + printerNode.setAttribute("name", tokens.at(1)); + printerNode.setAttribute("path", + "\\\\" + tokens.at(0) + "\\" + tokens.at(1)); + if (tokens.size() == 3) { + QDomText printerDescriptionNode(doc_.createTextNode(tokens.at(3))); + printerNode.appendChild(printerDescriptionNode); + } + printersNode.appendChild(printerNode); + } + + addPrintersScript.close(); + + return; +} + +void VSession::addScanners(const QString& script) { + addPrinters(script, "scanner"); +} + +void VSession::addUserAndHostname() { + QString username(getpwuid(geteuid())->pw_name); + this->addNodeWithAttribute("username", username); + + // Qt >= 4.7 has <QHostInfo> + // QString hostname(QHostInfo::localHostName()); + char hname[255]; + gethostname(hname, sizeof(hname)); + QString hostname(hname); + this->addNodeWithAttribute("hostname", hostname); + + QString image(this->getAttribute("image_name")); + if (QFileInfo(image).isRelative()) { + // make path to image absolute + this->addNodeWithAttribute("image_name", + this->baseDirPath_ + "/" + image); + } + + // insert computername as the first child of <eintrag> + // bootpgm needs computername within the first 500 bytes + QDomElement computername(doc_.createElement("computername")); + computername.setAttribute("param", hostname); + this->doc_.namedItem("eintrag").insertBefore(computername, QDomNode()); +} + +void VSession::mergePoolXml() { + QDomDocument doc; + + QString poolXmlFile = sessionHandler->getConfPath() + "/vmchooser-" + sessionHandler->getEnv() + ".xml"; + + QFile file(poolXmlFile); + if (!file.open(QIODevice::ReadOnly)) { + return; + } + if (!doc.setContent(&file)) { + file.close(); + return; + } + file.close(); + + for (QDomElement envNode(doc.firstChildElement("environment")); + !envNode.isNull(); + envNode = envNode.nextSiblingElement()) { + if (envNode.attribute("param") != sessionHandler->getEnv()) continue; + + for (QDomElement typeNode(envNode.firstChildElement()); + !typeNode.isNull(); + typeNode = typeNode.nextSiblingElement()) { + QString type = typeNode.nodeName(); + if (type != "shared_folders" && + type != "printers" && + type != "scanners") continue; + + QDomElement destinationNode = + this->doc_.namedItem("eintrag").namedItem(type).toElement(); + + if (destinationNode.isNull()) { + // create new node + destinationNode = this->doc_.createElement(type); + this->doc_.namedItem("eintrag").appendChild(destinationNode); + } + + for (QDomElement el(typeNode.firstChildElement()); + !el.isNull(); + el = el.nextSiblingElement()) { + destinationNode.appendChild(this->doc_.importNode(el, true)); + } + } + } +} + +bool VSession::run() const { + QString command = getAttribute("command"); + if (!command.isEmpty()) { + return QProcess::startDetached(command); + } + + VSession session = *this; + + session.addPrinters(sessionHandler->getPrinterScript()); + session.addScanners(sessionHandler->getScannerScript()); + + session.addUserAndHostname(); + + session.mergePoolXml(); + + // write xml to temporary file + QTemporaryFile tmpfile(QDir::tempPath() + "/vmchooser-XXXXXX.xml"); + if (!tmpfile.open() || + tmpfile.write(session.toXml().toUtf8()) == -1) { + return false; + } + tmpfile.close(); + tmpfile.setAutoRemove(false); + + _process->start(sessionHandler->getRunVmScript(), QStringList(tmpfile.fileName())); + qDebug() << sessionHandler->getRunVmScript(); + QObject::connect(_process, SIGNAL(finished(int, QProcess::ExitStatus)), QApplication::instance(), SLOT(quit())); + if (_process->state() == QProcess::Starting || QProcess::Running) + return true; + else + return false; +} + +int VSession::type() const { + return Session::VSESSION; +} + +bool VSession::operator<(const Session& other) const { + int p0 = this->priority(); + int p1 = other.priority(); + + if (p0 < p1) return true; + if (p0 == p1) { + QString d0 = this->shortDescription(); + QString d1 = other.shortDescription(); + return d0.localeAwareCompare(d1) < 0; + } + return false; +} |