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108 lines
3.6 KiB
108 lines
3.6 KiB
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Web;
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using System.IO;
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namespace Patcher.Web {
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abstract public class MainHandler : IHttpHandler {
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private const string ACTION_INSTALLALL = "InstallAll";
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private const string ACTION_ROLLBACKLATEST = "RollbackLatest";
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abstract protected PatcherInfo patcherInfo {
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get;
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}
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abstract protected string GetAdminConnectionString(HttpContext context);
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public bool IsReusable {
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get { return true; }
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}
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private void Install(HttpContext context) {
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context.Response.ContentType = "text/plain";
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context.Response.Output.WriteLine("Installing...");
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var updater = new Updater(new UpdateParams(this.patcherInfo.configuration, this.GetAdminConnectionString(context)), new InteractiveResponseStream(context));
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int resultCode = updater.ApplyAll();
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if(resultCode == 0) {
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this.patcherInfo.PatchesInstalled();
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context.Response.Output.WriteLine("Installed");
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} else {
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context.Response.Output.WriteLine("Failed to install: error code {0}", resultCode);
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}
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}
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private void RollbackLatest(HttpContext context) {
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context.Response.ContentType = "text/plain";
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context.Response.Output.WriteLine("Uninstalling...");
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var updater = new Updater(new UpdateParams(this.patcherInfo.configuration, this.GetAdminConnectionString(context)), new InteractiveResponseStream(context));
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this.patcherInfo.DisallowMainHandler();
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int resultCode = updater.RollbackLastPatch();
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if(resultCode == 0) {
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context.Response.Output.WriteLine("Uninstalled");
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} else {
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context.Response.Output.WriteLine("Failed to uninstall: error code {0}", resultCode);
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}
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}
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private void WriteForm(TextWriter writer, string method, string methodDescription) {
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writer.WriteLine("<form method=\"POST\">");
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writer.WriteLine("<input type=\"password\" name=\"data\"/><br/>");
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writer.WriteLine("<input type=\"hidden\" name=\"{0}\" value=\"{0}\"/>", method);
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writer.WriteLine("<input type=\"submit\" value=\"{0}\"/>", methodDescription);
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writer.WriteLine("</form>");
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}
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private void ShowInfo(HttpContext context) {
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var writer = context.Response.Output;
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var checker = new Checker(new CheckParams(this.patcherInfo.configuration));
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{
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writer.WriteLine("<h1>Patches to install</h1>");
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int totalPatches = 0;
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writer.WriteLine("<ol>");
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foreach(var patchId in checker.GetPatchesToInstall()) {
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writer.WriteLine("<li>{0}: \"{1}\"</li>", patchId.version, patchId.name);
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totalPatches++;
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}
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writer.WriteLine("</ol>");
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writer.WriteLine("<p>Total patches: {0}</p>", totalPatches);
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if(totalPatches > 0) {
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WriteForm(writer, ACTION_INSTALLALL, "Install all patches");
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}
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}
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{
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writer.WriteLine("<h1>Installed patches</h1>");
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int totalPatches = 0;
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writer.WriteLine("<ol>");
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foreach(var patchId in checker.GetInstalledPatches()) {
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writer.WriteLine("<li>{0}: \"{1}\"</li>", patchId.version, patchId.name);
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totalPatches++;
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}
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writer.WriteLine("</ol>");
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writer.WriteLine("<p>Total patches: {0}</p>", totalPatches);
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if(totalPatches > 0) {
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WriteForm(writer, ACTION_ROLLBACKLATEST, "Uninstall latest patch");
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}
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}
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}
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public void ProcessRequest(HttpContext context) {
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if(context.Request.Form[ACTION_INSTALLALL] == ACTION_INSTALLALL) {
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this.Install(context);
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} else if(context.Request.Form[ACTION_ROLLBACKLATEST] == ACTION_ROLLBACKLATEST) {
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this.RollbackLatest(context);
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} else {
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this.ShowInfo(context);
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}
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}
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}
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}
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