/Resources/Companion/AdminRole/VMManagerService/PHPExtensionInstaller.cs

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.ServiceModel.Syndication;

using System.Net;

using System.Diagnostics;

using System.IO;

using System.Xml.Linq;



namespace WindowsAzureCompanion.VMManagerService

{

    class PHPExtensionInstaller : IInstaller

    {

        private SyndicationItem product = null;

        private string productVersion = null;

        private string downloadFolder = null;

        private string downloadUrl = null;

        private string downloadFileName = null;

        private string installationFolder = null;



        public PHPExtensionInstaller(string installationFolder, string downloadFolder, SyndicationItem product, string productVersion)

        {

            this.product = product;

            this.productVersion = productVersion;

            this.downloadFolder = downloadFolder;

            this.downloadUrl = WindowsAzureVMManager.GetDownloadUrlFromProductVersion(product, productVersion);

            this.downloadFileName = WindowsAzureVMManager.GetAttributeValueFromProductVersion(product, productVersion, "downloadFileName");

            this.installationFolder = installationFolder;

        }



        // Install PHP Custom Extension

        public void Install()

        {

            try

            {

                WindowsAzureVMManager.DownloadAndExtractWebArchive(downloadUrl, 

                    downloadFileName,

                    downloadFolder,

                    Path.Combine(installationFolder, WindowsAzureVMManager.ExtensionsFolderForPHP),

                    null);

            

                // Get php.ini file name

                string phpIniFileName = Path.Combine(installationFolder, "php.ini");



                // Update php.ini and enabled all extension dll specified

                XElement downloadUrlsElement = product.ElementExtensions.Where<SyndicationElementExtension>

                    (x => x.OuterName == "installerFileChoices").FirstOrDefault().GetObject<XElement>();



                // TODO: Use Linq Query instead of foreach loop

                foreach (XElement extension in downloadUrlsElement.Elements())

                {

                    if (extension.Attribute("version").Value.Equals(productVersion))

                    {

                        // Iterate through properties

                        foreach (XElement propertyExtension in extension.Elements().First().Elements())

                        {

                            if (propertyExtension.Attribute("name").Value.Equals("extensions"))

                            {

                                string dllNames = propertyExtension.Attribute("value").Value;

                                foreach (string dllName in dllNames.Split(','))

                                {

                                    // Add each extension to php.ini

                                    FileUtils.AppendToFile(phpIniFileName, "extension=" + dllName);

                                    Trace.TraceInformation("Enabled PHP extension {0}", dllName);

                                }

                                break;

                            }

                        }

                    }

                }



                Trace.TraceInformation("Successfully installed PHP Extension {0}", product.Title.Text);

            }

            catch (Exception ex)

            {

                Trace.TraceError("Unable to install PHP Extension {0}: {1}", product.Title.Text, ex.Message);

                throw ex;

            }

        }

    }

}