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162 lines
5.9 KiB
162 lines
5.9 KiB
#pragma warning disable CS1591
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using System;
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using System.Globalization;
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using System.IO;
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using System.Text;
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using System.Threading.Tasks;
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using MediaBrowser.Controller;
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namespace MediaBrowser.WebDashboard.Api
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{
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public class PackageCreator
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{
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private readonly string _basePath;
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private readonly IResourceFileManager _resourceFileManager;
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public PackageCreator(string basePath, IResourceFileManager resourceFileManager)
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{
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_basePath = basePath;
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_resourceFileManager = resourceFileManager;
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}
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public async Task<Stream> GetResource(
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string virtualPath,
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string mode,
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string localizationCulture,
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string appVersion)
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{
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var resourcePath = _resourceFileManager.GetResourcePath(_basePath, virtualPath);
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Stream resourceStream = File.OpenRead(resourcePath);
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if (resourceStream != null && IsCoreHtml(virtualPath))
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{
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bool isMainIndexPage = string.Equals(virtualPath, "index.html", StringComparison.OrdinalIgnoreCase);
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resourceStream = await ModifyHtml(isMainIndexPage, resourceStream, mode, appVersion, localizationCulture).ConfigureAwait(false);
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}
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return resourceStream;
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}
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public static bool IsCoreHtml(string path)
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{
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if (path.IndexOf(".template.html", StringComparison.OrdinalIgnoreCase) != -1)
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{
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return false;
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}
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return string.Equals(Path.GetExtension(path), ".html", StringComparison.OrdinalIgnoreCase);
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}
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/// <summary>
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/// Modifies the source HTML stream by adding common meta tags, css and js.
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/// </summary>
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/// <param name="isMainIndexPage">True if the stream contains content for the main index page.</param>
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/// <param name="sourceStream">The stream whose content should be modified.</param>
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/// <param name="mode">The client mode ('cordova', 'android', etc).</param>
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/// <param name="appVersion">The application version.</param>
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/// <param name="localizationCulture">The localization culture.</param>
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/// <returns>
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/// A task that represents the async operation to read and modify the input stream.
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/// The task result contains a stream containing the modified HTML content.
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/// </returns>
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public static async Task<Stream> ModifyHtml(
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bool isMainIndexPage,
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Stream sourceStream,
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string mode,
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string appVersion,
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string localizationCulture)
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{
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string html;
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using (var reader = new StreamReader(sourceStream, Encoding.UTF8))
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{
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html = await reader.ReadToEndAsync().ConfigureAwait(false);
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}
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if (isMainIndexPage && !string.IsNullOrWhiteSpace(localizationCulture))
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{
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var lang = localizationCulture.Split('-')[0];
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html = html.Replace("<html", "<html data-culture=\"" + localizationCulture + "\" lang=\"" + lang + "\"", StringComparison.Ordinal);
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}
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if (isMainIndexPage)
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{
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html = html.Replace("<head>", "<head>" + GetMetaTags(mode), StringComparison.Ordinal);
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}
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// Disable embedded scripts from plugins. We'll run them later once resources have loaded
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if (html.IndexOf("<script", StringComparison.OrdinalIgnoreCase) != -1)
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{
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html = html.Replace("<script", "<!--<script", StringComparison.Ordinal);
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html = html.Replace("</script>", "</script>-->", StringComparison.Ordinal);
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}
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if (isMainIndexPage)
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{
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html = html.Replace("</body>", GetCommonJavascript(mode, appVersion) + "</body>", StringComparison.Ordinal);
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}
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var bytes = Encoding.UTF8.GetBytes(html);
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return new MemoryStream(bytes);
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}
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/// <summary>
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/// Gets the meta tags.
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/// </summary>
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/// <returns>System.String.</returns>
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private static string GetMetaTags(string mode)
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{
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var sb = new StringBuilder();
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if (string.Equals(mode, "cordova", StringComparison.OrdinalIgnoreCase)
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|| string.Equals(mode, "android", StringComparison.OrdinalIgnoreCase))
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{
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sb.Append("<meta http-equiv=\"Content-Security-Policy\" content=\"default-src * 'self' 'unsafe-inline' 'unsafe-eval' data: gap: file: filesystem: ws: wss:;\">");
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}
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return sb.ToString();
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}
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/// <summary>
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/// Gets the common javascript.
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/// </summary>
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/// <param name="mode">The mode.</param>
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/// <param name="version">The version.</param>
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/// <returns>System.String.</returns>
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private static string GetCommonJavascript(string mode, string version)
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{
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var builder = new StringBuilder();
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builder.Append("<script>");
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if (!string.IsNullOrWhiteSpace(mode))
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{
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builder.AppendFormat(CultureInfo.InvariantCulture, "window.appMode='{0}';", mode);
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}
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else
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{
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builder.AppendFormat(CultureInfo.InvariantCulture, "window.dashboardVersion='{0}';", version);
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}
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builder.Append("</script>");
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if (string.Equals(mode, "cordova", StringComparison.OrdinalIgnoreCase))
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{
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builder.Append("<script src=\"cordova.js\" defer></script>");
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}
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builder.Append("<script src=\"scripts/apploader.js");
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if (!string.IsNullOrWhiteSpace(version))
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{
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builder.Append("?v=");
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builder.Append(version);
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}
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builder.Append("\" defer></script>");
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return builder.ToString();
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}
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}
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}
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