Java tutorial
/** * Copyright (c) 2009--2014 Red Hat, Inc. * * This software is licensed to you under the GNU General Public License, * version 2 (GPLv2). There is NO WARRANTY for this software, express or * implied, including the implied warranties of MERCHANTABILITY or FITNESS * FOR A PARTICULAR PURPOSE. You should have received a copy of GPLv2 * along with this software; if not, see * http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt. * * Red Hat trademarks are not licensed under GPLv2. No permission is * granted to use or replicate Red Hat trademarks that are incorporated * in this software or its documentation. */ package com.redhat.rhn.frontend.action.rhnpackage; import com.redhat.rhn.common.security.PermissionException; import com.redhat.rhn.domain.channel.Channel; import com.redhat.rhn.domain.channel.ChannelFactory; import com.redhat.rhn.domain.rhnpackage.Package; import com.redhat.rhn.domain.rhnpackage.PackageFactory; import com.redhat.rhn.domain.rhnpackage.PackageSource; import com.redhat.rhn.domain.user.User; import com.redhat.rhn.frontend.action.common.BadParameterException; import com.redhat.rhn.frontend.dto.PackageListItem; import com.redhat.rhn.frontend.struts.RequestContext; import com.redhat.rhn.frontend.struts.RhnAction; import com.redhat.rhn.frontend.struts.RhnHelper; import com.redhat.rhn.manager.download.DownloadManager; import com.redhat.rhn.manager.rhnpackage.PackageManager; import org.apache.commons.lang.StringEscapeUtils; import org.apache.struts.action.ActionForm; import org.apache.struts.action.ActionForward; import org.apache.struts.action.ActionMapping; import java.util.HashMap; import java.util.HashSet; import java.util.List; import java.util.Map; import java.util.Set; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; /** * ChannelPackagesAction * @version $Rev$ */ public class PackageDetailsAction extends RhnAction { private final String PACKAGE_NAME = "package_name"; private final String PACKAGE_KEY = "package_key"; /** {@inheritDoc} */ public ActionForward execute(ActionMapping mapping, ActionForm formIn, HttpServletRequest request, HttpServletResponse response) { RequestContext requestContext = new RequestContext(request); User user = requestContext.getCurrentUser(); //If this is an easy one and we have the pid if (request.getParameter("pid") != null) { long pid = requestContext.getRequiredParam("pid"); Package pkg = PackageFactory.lookupByIdAndUser(pid, user); // show permission error if pid is invalid like we did before if (pkg == null) { throw new PermissionException("Invalid pid"); } request.setAttribute("type", "rpm"); request.setAttribute(PACKAGE_NAME, pkg.getFilename()); if (!pkg.getPackageKeys().isEmpty()) { request.setAttribute(PACKAGE_KEY, pkg.getPackageKeys().iterator().next().getKey()); } boolean isDebug = pkg.getPackageName().getName().contains("debuginfo"); request.setAttribute("isDebuginfo", isDebug); if (!isDebug) { Package debugPkg = PackageManager.findDebugInfo(user, pkg); String ftpUrl = PackageManager.generateFtpDebugPath(pkg); if (debugPkg != null) { request.setAttribute("debugUrl", DownloadManager.getPackageDownloadPath(debugPkg, user)); } else if (ftpUrl != null) { request.setAttribute("debugUrl", ftpUrl); request.setAttribute("debugFtp", true); } } if (DownloadManager.isFileAvailable(pkg.getPath())) { request.setAttribute("url", DownloadManager.getPackageDownloadPath(pkg, user)); } List<PackageSource> src = PackageFactory.lookupPackageSources(pkg); if (!src.isEmpty() && DownloadManager.isFileAvailable(src.get(0).getPath())) { request.setAttribute("srpm_url", DownloadManager.getPackageSourceDownloadPath(pkg, src.get(0), user)); request.setAttribute("srpm_path", src.get(0).getFile()); } // remove references to channels we can't see Set<Channel> channels = new HashSet<Channel>(pkg.getChannels()); channels.retainAll(ChannelFactory.getAccessibleChannelsByOrg(user.getOrg().getId())); request.setAttribute("channels", channels); request.setAttribute("pack", pkg); // description can be null. if (pkg.getDescription() != null) { String description = StringEscapeUtils.escapeHtml(pkg.getDescription()); request.setAttribute("description", description.replace("\n", "<BR>\n")); } else { request.setAttribute("description", pkg.getDescription()); } request.setAttribute("packArches", PackageFactory.findPackagesWithDifferentArch(pkg)); request.setAttribute("pid", pid); request.setAttribute("erratumEmpty", pkg.getPublishedErrata().isEmpty()); request.setAttribute("erratum", pkg.getPublishedErrata()); return mapping.findForward(RhnHelper.DEFAULT_FORWARD); } PackageListItem item = PackageListItem.parse(request.getParameter("id_combo")); Package pkg; long nameId = item.getIdOne(); long evrId = item.getIdTwo(); long archId = 0; if (item.getIdThree() != null) { archId = item.getIdThree(); } Long cid = requestContext.getParamAsLong("cid"); Long sid = requestContext.getParamAsLong("sid"); if (cid != null) { pkg = PackageManager.guestimatePackageByChannel(cid, nameId, evrId, user.getOrg()); } else if (sid != null) { pkg = PackageManager.guestimatePackageBySystem(sid, nameId, evrId, archId, user.getOrg()); } else { throw new BadParameterException("pid, cid, or sid"); } // show permission error if pid is invalid like we did before if (pkg == null) { throw new PermissionException("Invalid id_combo and cid/sid"); } Map<String, Object> params = new HashMap<String, Object>(); params.put("pid", pkg.getId()); return getStrutsDelegate().forwardParams(mapping.findForward("package"), params); } }