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Utils.cs
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namespace BlogEngine.Core
{
using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Net;
using System.Net.Mail;
using System.Reflection;
using System.Security;
using System.Security.Cryptography;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading;
using System.Web;
using System.Web.Configuration;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.HtmlControls;
using System.Xml;
using System.DirectoryServices;
using BlogEngine.Core.Web.Controls;
using BlogEngine.Core.Web.Extensions;
using System.Net.Sockets;
/// <summary>
/// Utilities for the entire solution to use.
/// </summary>
public static class Utils
{
#region Constants and Fields
/// <summary>
/// The cookie name for forcing the main theme on a mobile device.
/// </summary>
public const String ForceMainThemeCookieName = "forceMainTheme";
/// <summary>
/// The folder name where files are stored in the XmlFileSystemProvider.
/// </summary>
/// <value>"files"</value>
public const string FilesFolder = "files";
/// <summary>
/// The pattern.
/// </summary>
private const string Pattern = "<head.*<link( [^>]*title=\"{0}\"[^>]*)>.*</head>";
/// <summary>
/// The application's relative web root.
/// </summary>
private static string applicationRelativeWebRoot;
/// <summary>
/// The href regex.
/// </summary>
private static readonly Regex HrefRegex = new Regex(
"href=\"(.*)\"", RegexOptions.IgnoreCase | RegexOptions.Compiled);
/// <summary>
/// The regex between tags.
/// </summary>
private static readonly Regex RegexBetweenTags = new Regex(@">\s+", RegexOptions.Compiled);
/// <summary>
/// The regex line breaks.
/// </summary>
private static readonly Regex RegexLineBreaks = new Regex(@"\n\s+", RegexOptions.Compiled);
/// <summary>
/// The regex mobile.
/// </summary>
private static readonly Regex RegexMobile =
new Regex(BlogConfig.MobileServices, RegexOptions.IgnoreCase | RegexOptions.Compiled);
/// <summary>
/// The regex strip html.
/// </summary>
private static readonly Regex RegexStripHtml = new Regex("<[^>]*>", RegexOptions.Compiled);
/// <summary>
/// Boolean for returning whether or not BlogEngine is currently running on Mono.
/// </summary>
private static readonly bool isMono = (Type.GetType("Mono.Runtime") != null);
#endregion
#region Events
/// <summary>
/// Occurs after an e-mail has been sent. The sender is the MailMessage object.
/// </summary>
public static event EventHandler<EventArgs> EmailFailed;
/// <summary>
/// Occurs after an e-mail has been sent. The sender is the MailMessage object.
/// </summary>
public static event EventHandler<EventArgs> EmailSent;
/// <summary>
/// Occurs when a message will be logged. The sender is a string containing the log message.
/// </summary>
public static event EventHandler<EventArgs> OnLog;
#endregion
#region Properties
/// <summary>
/// Gets the absolute root of the website.
/// </summary>
/// <value>A string that ends with a '/'.</value>
public static Uri AbsoluteWebRoot
{
get { return Blog.CurrentInstance.AbsoluteWebRoot; }
}
/// <summary>
/// Gets the relative URL of the blog feed. If a Feedburner username
/// is entered in the admin settings page, it will return the
/// absolute Feedburner URL to the feed.
/// </summary>
public static string FeedUrl
{
get
{
return !string.IsNullOrEmpty(BlogSettings.Instance.AlternateFeedUrl)
? BlogSettings.Instance.AlternateFeedUrl
: $"{AbsoluteWebRoot}syndication.axd";
}
}
/// <summary>
/// Gets a value indicating whether we're running under Linux or a Unix variant.
/// </summary>
/// <value><c>true</c> if Linux/Unix; otherwise, <c>false</c>.</value>
public static bool IsLinux
{
get
{
var p = (int)Environment.OSVersion.Platform;
return (p == 4) || (p == 128);
}
}
/// <summary>
/// Gets a value indicating whether the client is a mobile device.
/// </summary>
/// <value><c>true</c> if this instance is mobile; otherwise, <c>false</c>.</value>
public static bool IsMobile
{
get
{
var context = HttpContext.Current;
if (context != null)
{
var request = context.Request;
if (request.Browser.IsMobileDevice)
{
return true;
}
if (!string.IsNullOrEmpty(request.UserAgent) && RegexMobile.IsMatch(request.UserAgent))
{
return true;
}
}
return false;
}
}
/// <summary>
/// Gets a value indicating whether we're running under Mono.
/// </summary>
/// <value><c>true</c> if Mono; otherwise, <c>false</c>.</value>
public static bool IsMono
{
get
{
return isMono;
}
}
/// <summary>
/// Gets the relative root of the current blog instance.
/// </summary>
/// <value>A string that ends with a '/'.</value>
public static string RelativeWebRoot
{
get
{
return Blog.CurrentInstance.RelativeWebRoot;
}
}
/// <summary>
/// Gets the application's relative root.
/// </summary>
/// <value>A string that ends with a '/'.</value>
public static string ApplicationRelativeWebRoot
{
get
{
return applicationRelativeWebRoot ??
(applicationRelativeWebRoot =
VirtualPathUtility.ToAbsolute(BlogConfig.VirtualPath));
}
}
/// <summary>
/// Returns the relative webroot if possible if the hostname of this blog instance matches the
/// hostname of the site aggregation blog. If the hostname is different, then the
/// absolute webroot is returned.
/// </summary>
public static string RelativeOrAbsoluteWebRoot
{
get
{
if (Blog.CurrentInstance.DoesHostnameDifferFromSiteAggregationBlog)
return AbsoluteWebRoot.ToString();
else
return RelativeWebRoot.ToString();
}
}
/// <summary>
/// Gets if the current HTTP request is a homepage request, taking the blog
/// instance into consideration.
/// </summary>
public static bool IsCurrentRequestForHomepage
{
get
{
HttpContext context = HttpContext.Current;
// Because the homepage uses querystring values to render non-homepage content
// such as posts by tag, posts by date range, posts by author, etc, if there
// are any of these known parameters, this will be considered not a homepage request.
// Marketing tools such as Google AdWords and campaign tracking in Google Analytics
// will add their own query string parameters, so it is important to still render
// the home page even if these third-party tracking parameters are present.
string[] knownQueryParameters =
{
"id", "name", "tag", "year", "month", "date", "calendar", "apml", "page"
};
if (context.Request.QueryString.AllKeys
.Where(x => x != null)
.Any(x => knownQueryParameters.Any(y => x.Equals(y, StringComparison.OrdinalIgnoreCase))))
return false;
string path = context.Request.Path;
// If this is a virtual folder for a blog instance, unless "default.aspx" is
// actually in the URL, default.aspx won't be reported in path, so we check
// to see if path is the root of RelativeWebRoot (the blog instance's
// relative web root).
if (RelativeWebRoot.Equals(VirtualPathUtility.AppendTrailingSlash(path), StringComparison.OrdinalIgnoreCase))
return true;
else if (path.Equals($"{RelativeWebRoot}default.aspx", StringComparison.OrdinalIgnoreCase))
return true;
return false;
}
}
#endregion
#region Public Methods
/// <summary>
/// Returns whether the main theme should be forced for the current mobile device.
/// </summary>
/// <param name="request">The request.</param>
/// <returns>
/// A <see cref="Boolean"/> instance.
/// </returns>
public static Boolean ShouldForceMainTheme(HttpRequest request)
{
var forceMainThemeCookie = request.Cookies[ForceMainThemeCookieName];
if (forceMainThemeCookie == null)
{
return false;
}
if (String.IsNullOrEmpty(forceMainThemeCookie.Value))
{
return false;
}
Boolean forceMainTheme;
if (Boolean.TryParse(forceMainThemeCookie.Value, out forceMainTheme))
{
return forceMainTheme;
}
return false;
}
/// <summary>
/// Parse the string representation of an enum field to a strongly typed enum value.
/// </summary>
public static T ParseEnum<T>(string value, T defaultValue) where T : struct, IConvertible
{
if (!typeof(T).IsEnum)
throw new ArgumentException("T must be an enumerated type");
if (string.IsNullOrEmpty(value))
return defaultValue;
foreach (T item in Enum.GetValues(typeof(T)))
{
if (item.ToString().Equals(value, StringComparison.OrdinalIgnoreCase))
return item;
}
return defaultValue;
}
private static Regex _identifierForDisplayRgx = new Regex(
@" (?<=[A-Z])(?=[A-Z][a-z]) # UC before me, UC lc after me
| (?<=[^A-Z])(?=[A-Z]) # Not UC before me, UC after me
| (?<=[A-Za-z])(?=[^A-Za-z]) # Letter before me, non letter after me
", RegexOptions.IgnorePatternWhitespace
);
/// <summary>
/// Format's an identifier (e.g. variable, enum field value) for display purposes,
/// by adding a space before each capital letter. A value like EditOwnUser becomes
/// "Edit Own User". If multiple capital letters are in identifier, these letters
/// will be treated as one word (e.g. XMLEditor becomes "XML Editor", not
/// "X M L Editor").
/// </summary>
/// <param name="fieldName">An identifier ready to be formatted for display.</param>
/// <returns>The identifier for display purposes.</returns>
/// <remarks>Credit: http://stackoverflow.com/questions/3103730</remarks>
public static string FormatIdentifierForDisplay(string fieldName)
{
StringBuilder sb = new StringBuilder();
foreach (string part in _identifierForDisplayRgx.Split(fieldName))
{
if (sb.Length > 0) { sb.Append(" "); }
sb.Append(part);
}
return sb.ToString();
}
/// <summary>
/// Selects a listitem by value, case insensitively.
/// </summary>
/// <param name="control">The ListControl</param>
/// <param name="value">The value to select</param>
/// <returns>The ListItem found and selected</returns>
public static ListItem SelectListItemByValue(ListControl control, string value)
{
control.ClearSelection();
control.SelectedIndex = -1;
foreach (ListItem li in control.Items)
{
if (string.Equals(value, li.Value, StringComparison.OrdinalIgnoreCase))
{
li.Selected = true;
return li;
}
}
return null;
}
/// <summary>
/// Converts an object to its JSON representation.
/// </summary>
/// <param name="obj"></param>
/// <returns></returns>
public static string ConvertToJson(object obj)
{
return new System.Web.Script.Serialization.JavaScriptSerializer().Serialize(obj);
}
/// <summary>
/// Adds a JavaScript reference to the HTML head tag.
/// </summary>
/// <param name="page">
/// The page to add the JavaScript include to.
/// </param>
/// <param name="url">
/// The url string.
/// </param>
/// <param name="placeInBottom">
/// The place In Bottom.
/// </param>
/// <param name="addDeferAttribute">
/// The add Defer Attribute.
/// </param>
public static void AddJavaScriptInclude(System.Web.UI.Page page, string url, bool placeInBottom = false, bool addDeferAttribute = false)
{
if (placeInBottom)
{
var deferAttr = (addDeferAttribute ? " defer=\"defer\"" : string.Empty);
var script = $"<script type=\"text/javascript\"{deferAttr} src=\"{url}\"></script>";
page.ClientScript.RegisterStartupScript(page.GetType(), url.GetHashCode().ToString(), script);
}
else
{
var script = new HtmlGenericControl("script");
script.Attributes["type"] = "text/javascript";
script.Attributes["src"] = url;
if (addDeferAttribute)
{
script.Attributes["defer"] = "defer";
}
string itemsKey = "next-script-insert-position";
HttpContext context = HttpContext.Current;
// Inserting scripts in the beginning of the HEAD tag so any user
// scripts that may rely on our scripts (jQuery, etc) have these
// scripts available to them. Also maintaining order so subsequent
// scripts are added after scripts we already added.
int? nextInsertPosition = context == null ? null : context.Items[itemsKey] as int?;
if (!nextInsertPosition.HasValue) { nextInsertPosition = 0; }
page.Header.Controls.AddAt(nextInsertPosition.Value, script);
if (context != null) { context.Items[itemsKey] = ++nextInsertPosition; }
}
}
/// <summary>
/// This method returns all code assemblies in app_code
/// If app_code has subdirectories for c#, vb.net etc
/// Each one will come back as a separate assembly
/// So we can support extensions in multiple languages
/// </summary>
/// <returns>
/// List of code assemblies
/// </returns>
public static IEnumerable<Assembly> CodeAssemblies()
{
var codeAssemblies = new List<Assembly>();
CompilationSection s = null;
var assemblyName = "__code";
try
{
try
{
s = (CompilationSection)WebConfigurationManager.GetSection("system.web/compilation");
}
catch (SecurityException)
{
// No read permissions on web.config due to the trust level (must be High or Full)
}
if (s != null && s.CodeSubDirectories != null && s.CodeSubDirectories.Count > 0)
{
for (var i = 0; i < s.CodeSubDirectories.Count; i++)
{
assemblyName = $"App_SubCode_{s.CodeSubDirectories[i].DirectoryName}";
codeAssemblies.Add(Assembly.Load(assemblyName));
}
}
else
{
assemblyName = "App_Code";
codeAssemblies.Add(Assembly.Load(assemblyName));
}
}
catch (FileNotFoundException)
{
/*ignore - code directory has no files*/
}
try
{
codeAssemblies.AddRange(GetCompiledExtensions());
}
catch (Exception ex)
{
Log("Error loading compiled assemblies: " + ex.Message);
}
return codeAssemblies;
}
/// <summary>
/// Converts a relative URL to an absolute one.
/// </summary>
/// <param name="relativeUri">
/// The relative Uri.
/// </param>
/// <returns>
/// The absolute Uri.
/// </returns>
public static Uri ConvertToAbsolute(Uri relativeUri)
{
return ConvertToAbsolute(relativeUri.ToString());
}
/// <summary>
/// Converts a relative URL to an absolute one.
/// </summary>
/// <param name="relativeUri">
/// The relative Uri.
/// </param>
/// <returns>
/// The absolute Uri.
/// </returns>
public static Uri ConvertToAbsolute(string relativeUri)
{
if (String.IsNullOrEmpty(relativeUri))
{
throw new ArgumentNullException(nameof(relativeUri));
}
var absolute = AbsoluteWebRoot.ToString();
var index = absolute.LastIndexOf(RelativeWebRoot);
return new Uri(absolute.Substring(0, index) + relativeUri);
}
/// <summary>
/// Downloads a web page from the Internet and returns the HTML as a string. .
/// </summary>
/// <param name="url">
/// The URL to download from.
/// </param>
/// <returns>
/// The HTML or null if the URL isn't valid.
/// </returns>
[Obsolete("Use the RemoteFile class instead.")]
public static string DownloadWebPage(Uri url)
{
try
{
var remoteFile = new RemoteFile(url, true);
return remoteFile.GetFileAsString();
}
catch (Exception)
{
return null;
}
}
/// <summary>
/// Extract file name from given physical server path
/// </summary>
/// <param name="path">
/// The Server path.
/// </param>
/// <returns>
/// The File Name.
/// </returns>
public static string ExtractFileNameFromPath(string path)
{
return Path.GetFileName(path);
}
/// <summary>
/// Finds semantic links in a given HTML document.
/// </summary>
/// <param name="type">
/// The type of link. Could be foaf, apml or sioc.
/// </param>
/// <param name="html">
/// The HTML to look through.
/// </param>
/// <returns>
/// A list of Uri.
/// </returns>
public static List<Uri> FindLinks(string type, string html)
{
var matches = Regex.Matches(
html, string.Format(Pattern, type), RegexOptions.IgnoreCase | RegexOptions.Singleline);
var urls = new List<Uri>();
foreach (var hrefMatch in
matches.Cast<Match>().Where(match => match.Groups.Count == 2).Select(match => match.Groups[1].Value).
Select(link => HrefRegex.Match(link)).Where(hrefMatch => hrefMatch.Groups.Count == 2))
{
Uri url;
var value = hrefMatch.Groups[1].Value;
if (Uri.TryCreate(value, UriKind.Absolute, out url))
{
urls.Add(url);
}
}
return urls;
}
/// <summary>
/// Converts all the relative paths in the specified content to absolute.
/// </summary>
/// <param name="content">
/// The content.
/// </param>
/// <param name="publishable">
/// The publishable.
/// </param>
public static string ConvertPublishablePathsToAbsolute(string content, IPublishable publishable)
{
content = content.Replace(
string.Format("\"{0}image.axd", publishable.Blog.AbsoluteWebRoot.AbsolutePath), "\"" + publishable.Blog.AbsoluteWebRoot + "image.axd");
content = content.Replace(
string.Format("\"{0}file.axd", publishable.Blog.AbsoluteWebRoot.AbsolutePath), "\"" + publishable.Blog.AbsoluteWebRoot + "file.axd");
content = content.Replace($"href=\"{publishable.Blog.RelativeWebRoot}", $"href=\"{publishable.Blog.AbsoluteWebRoot}");
content = content.Replace("href=\"/", $"href=\"{publishable.Blog.AbsoluteWebRoot}");
return content;
}
/// <summary>
/// Finds the semantic documents from a URL based on the type.
/// </summary>
/// <param name="url">
/// The URL of the semantic document or a document containing semantic links.
/// </param>
/// <param name="type">
/// The type. Could be "foaf", "apml" or "sioc".
/// </param>
/// <returns>
/// A dictionary of the semantic documents. The dictionary is empty if no documents were found.
/// </returns>
public static Dictionary<Uri, XmlDocument> FindSemanticDocuments(Uri url, string type)
{
var list = new Dictionary<Uri, XmlDocument>();
// ignoreRemoteDownloadSettings is set to true for the
// RemoteFile instance for backwards compatibility.
var remoteFile = new RemoteFile(url, true);
var content = remoteFile.GetFileAsString();
if (!string.IsNullOrEmpty(content))
{
var upper = content.ToUpperInvariant();
if (upper.Contains("</HEAD") && upper.Contains("</HTML"))
{
var urls = FindLinks(type, content);
foreach (var xmlUrl in urls)
{
var doc = LoadDocument(url, xmlUrl);
if (doc != null)
{
list.Add(xmlUrl, doc);
}
}
}
else
{
var doc = LoadDocument(url, url);
if (doc != null)
{
list.Add(url, doc);
}
}
}
return list;
}
/// <summary>
/// Returns the default culture. This is either the culture specified in the blog settings,
/// or the default culture installed with the operating system.
/// </summary>
/// <returns>
/// The default culture.
/// </returns>
public static CultureInfo GetDefaultCulture()
{
var settingsCulture = BlogSettings.Instance.Culture;
if (String.IsNullOrWhiteSpace(settingsCulture) ||
settingsCulture.Equals("Auto", StringComparison.OrdinalIgnoreCase))
{
return CultureInfo.InstalledUICulture;
}
return CultureInfo.CreateSpecificCulture(settingsCulture);
}
/// <summary>
/// Gets the sub domain.
/// </summary>
/// <param name="url">
/// The URL to get the sub domain from.
/// </param>
/// <returns>
/// The sub domain.
/// </returns>
public static string GetSubDomain(Uri url)
{
if (url.HostNameType == UriHostNameType.Dns)
{
var host = url.Host;
if (host.Split('.').Length > 2)
{
var lastIndex = host.LastIndexOf(".");
var index = host.LastIndexOf(".", lastIndex - 1);
return host.Substring(0, index);
}
}
return null;
}
/// <summary>
/// Encrypts a string using the SHA256 algorithm.
/// </summary>
/// <param name="plainMessage">
/// The plain Message.
/// </param>
/// <returns>
/// The hash password.
/// </returns>
public static string HashPassword(string plainMessage)
{
var data = Encoding.UTF8.GetBytes(plainMessage);
using (HashAlgorithm sha = new SHA256Managed())
{
sha.TransformFinalBlock(data, 0, data.Length);
return Convert.ToBase64String(sha.Hash);
}
}
/// <summary>
/// The body regex.
/// </summary>
private static readonly Regex BodyRegex = new Regex(@"\[UserControl:(.*?)\]", RegexOptions.Compiled | RegexOptions.IgnoreCase);
/// <summary>
/// Injects any user controls if one is referenced in the text.
/// </summary>
/// <param name="containerControl">The control that the user controls will be injected in to.</param>
/// <param name="content">The string to parse for user controls.</param>
public static void InjectUserControls(System.Web.UI.Control containerControl, string content)
{
var currentPosition = 0;
var matches = BodyRegex.Matches(content);
var containerControls = containerControl.Controls;
var page = containerControl.Page;
foreach (Match match in matches)
{
// Add literal for content before custom tag should it exist.
if (match.Index > currentPosition)
{
containerControls.Add(new LiteralControl(content.Substring(currentPosition, match.Index - currentPosition)));
}
// Now lets add our user control.
try
{
var all = match.Groups[1].Value.Trim();
Control usercontrol;
if (!all.EndsWith(".ascx", StringComparison.OrdinalIgnoreCase))
{
var index = all.IndexOf(".ascx", StringComparison.OrdinalIgnoreCase) + 5;
usercontrol = page.LoadControl(all.Substring(0, index));
var parameters = page.Server.HtmlDecode(all.Substring(index));
var type = usercontrol.GetType();
var paramCollection = parameters.Split(new[] { ";" }, StringSplitOptions.RemoveEmptyEntries);
foreach (var param in paramCollection)
{
var paramSplit = param.Split('=');
var name = paramSplit[0].Trim();
var value = paramSplit[1].Trim();
var property = type.GetProperty(name);
property.SetValue(
usercontrol,
Convert.ChangeType(value, property.PropertyType, CultureInfo.InvariantCulture),
null);
}
}
else
{
usercontrol = page.LoadControl(all);
}
containerControls.Add(usercontrol);
// Now we will update our position.
// currentPosition = myMatch.Index + myMatch.Groups[0].Length;
}
catch (Exception)
{
// Whoopss, can't load that control so lets output something that tells the developer that theres a problem.
containerControls.Add(
new LiteralControl($"ERROR - UNABLE TO LOAD CONTROL : {match.Groups[1].Value}"));
}
currentPosition = match.Index + match.Groups[0].Length;
}
// Finally we add any trailing static text.
containerControls.Add(
new LiteralControl(content.Substring(currentPosition, content.Length - currentPosition)));
}
private static readonly Regex emailRegex = new Regex(
@"^[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*@(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?$", RegexOptions.IgnoreCase);
private static readonly Regex validIpV4AddressRegex = new Regex(@"^(([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])\.){3}([0-9]|[1-9][0-9]|1[0-9]{2}|2[0-4][0-9]|25[0-5])$", RegexOptions.IgnoreCase);
private static readonly Regex validHostnameRegex = new Regex(@"^(([a-z]|[a-z][a-z0-9\-]*[a-z0-9])\.)*([a-z]|[a-z][a-z0-9\-]*[a-z0-9])$", RegexOptions.IgnoreCase);
/// <summary>
/// Email address by user name
/// </summary>
/// <param name="userName">User name</param>
/// <returns>Email Address</returns>
public static string GetUserEmail(string userName)
{
int count;
var userCollection = System.Web.Security.Membership.Provider.GetAllUsers(0, 999, out count);
var users = userCollection.Cast<System.Web.Security.MembershipUser>().ToList();
var user = users.FirstOrDefault(u => u.UserName.Equals(userName, StringComparison.OrdinalIgnoreCase));
if(user != null)
{
return user.Email;
}
return userName;
}
/// <summary>
/// Validates an email address.
/// </summary>
/// <param name="email"></param>
/// <returns></returns>
public static bool IsEmailValid(string email)
{
if (!string.IsNullOrWhiteSpace(email))
{
return emailRegex.IsMatch(email.Trim());
}
return false;
}
/// <summary>
/// Validates a host name.
/// </summary>
/// <param name="hostname"></param>
/// <returns></returns>
public static bool IsHostnameValid(string hostname)
{
if (!string.IsNullOrWhiteSpace(hostname))
{
return validHostnameRegex.IsMatch(hostname.Trim());
}
return false;
}
/// <summary>
/// Validates an IPv4 address.
/// </summary>
/// <param name="address"></param>
/// <returns></returns>
public static bool IsIpV4AddressValid(string address)
{
if (!string.IsNullOrWhiteSpace(address))
{
return validIpV4AddressRegex.IsMatch(address.Trim());
}
return false;
}
/// <summary>
/// Validates an IPv6 address.
/// </summary>
/// <param name="address"></param>
/// <returns></returns>
public static bool IsIpV6AddressValid(string address)
{
if (!string.IsNullOrWhiteSpace(address))
{
IPAddress ip;
if (IPAddress.TryParse(address, out ip))
{
return ip.AddressFamily == AddressFamily.InterNetworkV6;
}
}
return false;
}
/// <summary>
/// Run through all code assemblies and creates object
/// instance for types marked with extension attribute
/// </summary>
public static void LoadExtensions()
{
var codeAssemblies = CodeAssemblies();
var sortedExtensions = new List<SortedExtension>();
foreach (Assembly a in codeAssemblies)
{
var types = a.GetTypes();
Type extensionsAttribute = typeof(ExtensionAttribute);
sortedExtensions.AddRange(
from type in types
let attributes = type.GetCustomAttributes(extensionsAttribute, false)
from attribute in attributes
where (attribute.GetType() == extensionsAttribute)
let ext = (ExtensionAttribute)attribute
select new SortedExtension(ext.Priority, type.Name, type.FullName));
sortedExtensions.Sort(
(e1, e2) =>
e1.Priority == e2.Priority
? string.CompareOrdinal(e1.Name, e2.Name)
: e1.Priority.CompareTo(e2.Priority));
foreach (var x in sortedExtensions.Where(x => ExtensionManager.ExtensionEnabled(x.Name)))
{
a.CreateInstance(x.Type);
}
}
// initialize comment rules and filters
CommentHandlers.Listen();
}
/// <summary>
/// Sends a message to any subscribed log listeners.
/// </summary>
/// <param name="message">
/// The message to be logged.
/// </param>
public static void Log(object message)
{
if (OnLog != null)
{
OnLog(message, EventArgs.Empty);
}
}
/// <summary>
/// Sends a message to any subscribed log listeners.
/// </summary>
/// <param name="format">A format string</param>
/// <param name="args">Arguments to replace in the format string</param>
public static void Log(string format, params object[] args)
{
if (OnLog != null)
{
OnLog(string.Format(format, args), EventArgs.Empty);
}
}
/// <summary>
/// Sends a message to any subscribed log listeners.
/// </summary>
/// <param name="methodName"></param>
/// <param name="ex"></param>
public static void Log(string methodName, Exception ex)
{
Log($"{methodName}: {ex.Message}");
}
/// <summary>
/// Generates random password for password reset
/// </summary>
/// <returns>
/// Random password
/// </returns>
public static string RandomPassword()
{
var chars = "abcdefghijklmnopqrstuvwxyz1234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ".ToCharArray();
var password = string.Empty;
var random = new Random();
for (var i = 0; i < 8; i++)
{
var x = random.Next(1, chars.Length);
if (!password.Contains(chars.GetValue(x).ToString()))
{
password += chars.GetValue(x);
}
else
{
i--;
}
}
return password;