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using MimeKit;
using PKISharp.WACS.Clients;
using PKISharp.WACS.DomainObjects;
using Serilog.Events;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Threading.Tasks;
using System.Web;
namespace PKISharp.WACS.Services
{
internal class NotificationService
{
private readonly ILogService _log;
private readonly ICertificateService _certificateService;
private readonly ISettingsService _settings;
private readonly EmailClient _email;
public NotificationService(
ILogService log,
ISettingsService setttings,
EmailClient email,
ICertificateService certificateService)
{
_log = log;
_certificateService = certificateService;
_email = email;
_settings = setttings;
}
/// <summary>
/// Handle created notification
/// </summary>
/// <param name="runLevel"></param>
/// <param name="renewal"></param>
internal async Task NotifyCreated(Renewal renewal, IEnumerable<MemoryEntry> log)
{
// Do not send emails when running interactively
_log.Information(
LogType.All,
"Certificate {friendlyName} created",
renewal.LastFriendlyName);
if (_settings.Notification.EmailOnSuccess)
{
await _email.Send(
$"Certificate {renewal.LastFriendlyName} created",
@$"<p>Certificate <b>{HttpUtility.HtmlEncode(renewal.LastFriendlyName)}</b> succesfully created.</p>
{NotificationInformation(renewal)}
{RenderLog(log)}",
MessagePriority.Normal);
}
}
/// <summary>
/// Handle success notification
/// </summary>
/// <param name="runLevel"></param>
/// <param name="renewal"></param>
internal async Task NotifySuccess(Renewal renewal, IEnumerable<MemoryEntry> log)
{
// Do not send emails when running interactively
_log.Information(
LogType.All,
"Renewal for {friendlyName} succeeded",
renewal.LastFriendlyName);
if (_settings.Notification.EmailOnSuccess)
{
await _email.Send(
$"Certificate renewal {renewal.LastFriendlyName} completed",
@$"<p>Certificate <b>{HttpUtility.HtmlEncode(renewal.LastFriendlyName)}</b> succesfully renewed.</p>
{NotificationInformation(renewal)}
{RenderLog(log)}",
MessagePriority.NonUrgent);
}
}
/// <summary>
/// Handle failure notification
/// </summary>
/// <param name="runLevel"></param>
/// <param name="renewal"></param>
internal async Task NotifyFailure(
RunLevel runLevel,
Renewal renewal,
List<string> errors,
IEnumerable<MemoryEntry> log)
{
// Do not send emails when running interactively
_log.Error("Renewal for {friendlyName} failed, will retry on next run", renewal.LastFriendlyName);
if (errors.Count == 0)
{
errors.Add("No specific error reason provided.");
}
if (runLevel.HasFlag(RunLevel.Unattended))
{
await _email.Send(
$"Error processing certificate renewal {renewal.LastFriendlyName}",
@$"<p>Renewal for <b>{HttpUtility.HtmlEncode(renewal.LastFriendlyName)}</b> failed, will retry on next run.<br><br>Error(s):
<ul><li>{string.Join("</li><li>", errors.Select(x => HttpUtility.HtmlEncode(x)))}</li></ul></p>
{NotificationInformation(renewal)}
{RenderLog(log)}",
MessagePriority.Urgent);
}
}
private string RenderLog(IEnumerable<MemoryEntry> log) => @$"<p>Log output:<ul><li>{string.Join("</li><li>", log.Select(x => RenderLogEntry(x)))}</ul></p>";
private string RenderLogEntry(MemoryEntry log)
{
var color = $"00000";
switch (log.Level)
{
case LogEventLevel.Error:
case LogEventLevel.Fatal:
color = "#8B0000";
break;
case LogEventLevel.Warning:
color = "#CCCC00";
break;
case LogEventLevel.Information:
color = "#000000";
break;
case LogEventLevel.Debug:
case LogEventLevel.Verbose:
color = "#a9a9a9";
break;
}
return $"<span style=\"color:{color}\">{log.Level} - {HttpUtility.HtmlEncode(log.Message)}</span>";
}
private string NotificationInformation(Renewal renewal)
{
try
{
var extraMessage = @$"<p>
<table>
<tr><td><b>Hosts</b><td><td></td></tr>
<tr><td colspan=""2"">{NotificationHosts(renewal)}</td></tr>
<tr><td colspan=""2""> </td></tr>
<tr><td><b>Plugins</b></td><td></td></tr>
<tr><td>Target: </td><td> {renewal.TargetPluginOptions.Name}</td></tr>";
extraMessage += @$"<tr><td>Validation: </td><td> {renewal.ValidationPluginOptions.Name}</td></tr>";
if (renewal.OrderPluginOptions != null)
{
extraMessage += @$"<tr><td>Order: </td><td> {renewal.OrderPluginOptions.Name}</td></tr>";
}
if (renewal.CsrPluginOptions != null)
{
extraMessage += @$"<tr><td>Csr: </td><td> {renewal.CsrPluginOptions.Name}</td></tr>";
}
extraMessage += @$"<tr><td>Store: </td><td> {string.Join(", ", renewal.StorePluginOptions.Select(x => x.Name))}</td></tr>";
extraMessage += $"<tr><td>Installation: </td><td> {string.Join(", ", renewal.InstallationPluginOptions.Select(x => x.Name))}</td></tr>";
extraMessage += "</table></p>";
return extraMessage;
}
catch (Exception ex)
{
_log.Error(ex, "Retrieval of metadata for email failed.");
return "";
}
}
private string NotificationHosts(Renewal renewal)
{
try
{
var infos = _certificateService.CachedInfos(renewal);
if (infos == null || infos.Count() == 0)
{
return "Unknown";
}
else
{
return string.Join(", ", infos.SelectMany(i => i.SanNames).Distinct());
}
}
catch
{
return "Error";
}
}
}
}
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