[locale] Add alternate GeoIP data format

src/modules/locale/CMakeLists.txt

@@ -1,11 +1,19 @@
 include_directories( ${PROJECT_BINARY_DIR}/src/libcalamaresui )
 
+set( geoip_src GeoIP.cpp GeoIPFreeGeoIP.cpp )
+set( geoip_libs )
+
+find_package(Qt5 COMPONENTS Xml)
+if( Qt5Xml_FOUND )
+    list( APPEND geoip_src GeoIPXML.cpp )
+    list( APPEND geoip_libs Qt5::Xml )
+endif()
+
 calamares_add_plugin( locale
     TYPE viewmodule
     EXPORT_MACRO PLUGINDLLEXPORT_PRO
     SOURCES
-        GeoIP.cpp
-        GeoIPFreeGeoIP.cpp
+        ${geoip_src}
         LCLocaleDialog.cpp
         LocaleConfiguration.cpp
         LocalePage.cpp
@@ -19,6 +27,7 @@ calamares_add_plugin( locale
     LINK_PRIVATE_LIBRARIES
         calamaresui
         Qt5::Network
+        ${geoip_libs}
         ${YAMLCPP_LIBRARY}
     SHARED_LIB
 )

src/modules/locale/GeoIPXML.cpp

@@ -0,0 +1,52 @@
+/* === This file is part of Calamares - <http://github.com/calamares> ===
+ *
+ *   Copyright 2018, Adriaan de Groot <groot@kde.org>
+ *
+ *   Calamares is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   Calamares is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with Calamares. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include "GeoIPXML.h"
+
+#include "utils/Logger.h"
+
+#include <QNetworkReply>
+#include <QtXml/QDomDocument>
+
+GeoIP::RegionZonePair
+XMLGeoIP::processReply( QNetworkReply* reply )
+{
+    QString domError;
+    int errorLine, errorColumn;
+
+    QDomDocument doc;
+    if ( doc.setContent( reply->readAll(), false, &domError, &errorLine, &errorColumn ) )
+    {
+        const auto tzElements = doc.elementsByTagName( "TimeZone" );
+        cDebug() << "GeoIP found" << tzElements.length() << "elements";
+        for ( int it = 0; it < tzElements.length(); ++it )
+        {
+            if ( tzElements.at(it).isText() )
+            {
+                return splitTZString( tzElements.at(it).nodeValue() );
+            }
+        }
+    }
+    else
+    {
+        cDebug() << "GeoIP XML data error:" << domError << "(line" << errorLine << errorColumn << ')';
+    }
+
+    return qMakePair( QString(), QString() );
+
+}

src/modules/locale/GeoIPXML.h

@@ -0,0 +1,36 @@
+/* === This file is part of Calamares - <http://github.com/calamares> ===
+ *
+ *   Copyright 2018, Adriaan de Groot <groot@kde.org>
+ *
+ *   Calamares is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   Calamares is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with Calamares. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef GEOIPXML_H
+#define GEOIPXML_H
+
+#include "GeoIP.h"
+
+/** @brief GeoIP lookup with XML data
+ *
+ * The data is assumed to be in XML format with a
+ *      <Response><TimeZone></TimeZone></Response>
+ * element, which contains the text (string) for the region/zone. This
+ * format is  expected by, e.g. the Ubiquity installer.
+ */
+struct XMLGeoIP : public GeoIP
+{
+    virtual RegionZonePair processReply( QNetworkReply* );
+} ;
+
+#endif