#include <QtXml>
#include <QDir>
#include <QApplication>
#include <QProcess>
#include <QDate>
#include <QStringList>
#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"
bool VSession::init(const QString& xml, const QString& baseDirPath) {
this->baseDirPath_ = baseDirPath;
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::toXml() const {
return this->doc_.toString();
}
QString VSession::getAttribute(const QString &nodeName,
const QString &attribute) const {
QDomDocument doc = this->doc_;
QDomNode n = doc.namedItem("eintrag").namedItem(nodeName);
if (n.isNull()) {
// TODO
}
return this->doc_.namedItem("eintrag").namedItem(nodeName).toElement()
.attribute(attribute);
}
QString VSession::getNodeText(const QString& nodeName) const {
return this->doc_.namedItem(nodeName).toText().data();
}
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")) {
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
return false;
}
if (tillDate.isValid() && tillDate < today) {
// tillDate is in the past
return false;
}
}
return true;
}
bool VSession::isLocked() const {
// default to false
return getAttribute("locked").compare("true") == 0;
}
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;
}
// TODO: check return values, exceptions, ...
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[HOST_NAME_MAX + 1];
gethostname(hname, HOST_NAME_MAX);
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());
}
bool VSession::run() const {
QString command = getAttribute("command");
if (!command.isEmpty()) {
if (QProcess::startDetached(command)) {
// TODO: save session
return true;
}
return false;
}
VSession session = *this;
QString etcpath(VMCHOOSER_ETC_BASE_PATH);
// TODO: put script names in (global?) constants
session.addPrinters(etcpath + "printer.sh");
session.addScanners(etcpath + "scanner.sh");
session.addUserAndHostname();
// TODO: read the group configuration XML
// session.readGroupXml(&dat, env);
// 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);
// TODO: put script name in constant
// TODO: check if run-virt.sh exists
QString runVmScript(QString(VMCHOOSER_BIN_PATH) + "run-virt.sh");
if (QProcess::startDetached(runVmScript, QStringList(tmpfile.fileName()))) {
// TODO: save session
return true;
}
return false;
}
QList<Session*> VSession::readXmlFile(const QString& filepath) {
QList<Session*> retval;
QDomDocument doc;
QFile file(filepath);
if (!file.open(QIODevice::ReadOnly)) {
// TODO: error message
return retval;
}
if (!doc.setContent(&file)) {
// TODO: error message
file.close();
return retval;
}
file.close();
// TODO: iterate over all <settings> child nodes?
QString dirName(QFileInfo(filepath).dir().absolutePath());
QDomElement settingsNode = doc.firstChildElement("settings");
for (QDomElement el(settingsNode.firstChildElement("eintrag"));
!el.isNull();
el = el.nextSiblingElement("eintrag")) {
QDomDocument dummy;
dummy.appendChild(dummy.importNode(el, true));
VSession* e = new VSession;
if (e->init(dummy.toString(), dirName)) {
retval.append(e);
}
}
return retval;
}
/**
* - calls xmlfilter.sh to glob a folder for xmls
* -> if no xmlfilter.sh is available, it globs for available xmls
* - reads all xml files and creates for each its own VSession-struct
*/
QList<Session*> VSession::readXmlDir(const QString& path) {
QList<Session*> retval;
QDir appDir(QApplication::applicationDirPath());
if (QFile::exists(appDir.filePath(filterscript))) {
// run filterscript
// treat every output line as a filename and read it
QProcess myFilterScript;
myFilterScript.start(appDir.filePath(filterscript), QStringList(path),
QIODevice::ReadOnly);
while (!myFilterScript.atEnd()) {
QString filename(myFilterScript.readLine());
if (QDir::isRelativePath(filename)) {
filename.prepend(path + "/");
}
retval.append(readXmlFile(filename));
}
myFilterScript.close();
} else {
// iterate over all .xml files in directory <path> (and sub-directories)
// and read them
QDirIterator di(path,
QDirIterator::Subdirectories |
QDirIterator::FollowSymlinks);
while (di.hasNext()) {
if (!di.next().endsWith(".xml")) continue;
retval.append(readXmlFile(di.fileInfo().absoluteFilePath()));
}
}
return retval;
}
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;
}