jellyfin/Emby.Server.Implementations/LiveTv/TunerHosts/M3uParser.cs
Andrew Rabert 469590c9c5 Merge pull request #508 from EraYaN/api-version-reporting
Update internal versioning and user agents.
2019-01-19 21:08:35 -05:00

327 lines
11 KiB
C#

using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Text.RegularExpressions;
using System.Threading;
using System.Threading.Tasks;
using MediaBrowser.Common.Extensions;
using MediaBrowser.Common.Net;
using MediaBrowser.Controller;
using MediaBrowser.Controller.LiveTv;
using MediaBrowser.Model.Extensions;
using MediaBrowser.Model.IO;
using Microsoft.Extensions.Logging;
namespace Emby.Server.Implementations.LiveTv.TunerHosts
{
public class M3uParser
{
private readonly ILogger _logger;
private readonly IFileSystem _fileSystem;
private readonly IHttpClient _httpClient;
private readonly IServerApplicationHost _appHost;
public M3uParser(ILogger logger, IFileSystem fileSystem, IHttpClient httpClient, IServerApplicationHost appHost)
{
_logger = logger;
_fileSystem = fileSystem;
_httpClient = httpClient;
_appHost = appHost;
}
public async Task<List<ChannelInfo>> Parse(string url, string channelIdPrefix, string tunerHostId, CancellationToken cancellationToken)
{
// Read the file and display it line by line.
using (var reader = new StreamReader(await GetListingsStream(url, cancellationToken).ConfigureAwait(false)))
{
return GetChannels(reader, channelIdPrefix, tunerHostId);
}
}
public List<ChannelInfo> ParseString(string text, string channelIdPrefix, string tunerHostId)
{
// Read the file and display it line by line.
using (var reader = new StringReader(text))
{
return GetChannels(reader, channelIdPrefix, tunerHostId);
}
}
public Task<Stream> GetListingsStream(string url, CancellationToken cancellationToken)
{
if (url.StartsWith("http", StringComparison.OrdinalIgnoreCase))
{
return _httpClient.Get(new HttpRequestOptions
{
Url = url,
CancellationToken = cancellationToken,
// Some data providers will require a user agent
UserAgent = _appHost.ApplicationSemanticVersion
});
}
return Task.FromResult(_fileSystem.OpenRead(url));
}
const string ExtInfPrefix = "#EXTINF:";
private List<ChannelInfo> GetChannels(TextReader reader, string channelIdPrefix, string tunerHostId)
{
var channels = new List<ChannelInfo>();
string line;
string extInf = "";
while ((line = reader.ReadLine()) != null)
{
line = line.Trim();
if (string.IsNullOrWhiteSpace(line))
{
continue;
}
if (line.StartsWith("#EXTM3U", StringComparison.OrdinalIgnoreCase))
{
continue;
}
if (line.StartsWith(ExtInfPrefix, StringComparison.OrdinalIgnoreCase))
{
extInf = line.Substring(ExtInfPrefix.Length).Trim();
_logger.LogInformation("Found m3u channel: {0}", extInf);
}
else if (!string.IsNullOrWhiteSpace(extInf) && !line.StartsWith("#", StringComparison.OrdinalIgnoreCase))
{
var channel = GetChannelnfo(extInf, tunerHostId, line);
if (string.IsNullOrWhiteSpace(channel.Id))
{
channel.Id = channelIdPrefix + line.GetMD5().ToString("N");
}
else
{
channel.Id = channelIdPrefix + channel.Id.GetMD5().ToString("N");
}
channel.Path = line;
channels.Add(channel);
extInf = "";
}
}
return channels;
}
private ChannelInfo GetChannelnfo(string extInf, string tunerHostId, string mediaUrl)
{
var channel = new ChannelInfo();
channel.TunerHostId = tunerHostId;
extInf = extInf.Trim();
var attributes = ParseExtInf(extInf, out string remaining);
extInf = remaining;
if (attributes.TryGetValue("tvg-logo", out string value))
{
channel.ImageUrl = value;
}
channel.Name = GetChannelName(extInf, attributes);
channel.Number = GetChannelNumber(extInf, attributes, mediaUrl);
attributes.TryGetValue("tvg-id", out string tvgId);
attributes.TryGetValue("channel-id", out string channelId);
channel.TunerChannelId = string.IsNullOrWhiteSpace(tvgId) ? channelId : tvgId;
var channelIdValues = new List<string>();
if (!string.IsNullOrWhiteSpace(channelId))
{
channelIdValues.Add(channelId);
}
if (!string.IsNullOrWhiteSpace(tvgId))
{
channelIdValues.Add(tvgId);
}
if (channelIdValues.Count > 0)
{
channel.Id = string.Join("_", channelIdValues.ToArray());
}
return channel;
}
private string GetChannelNumber(string extInf, Dictionary<string, string> attributes, string mediaUrl)
{
var nameParts = extInf.Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
var nameInExtInf = nameParts.Length > 1 ? nameParts.Last().Trim() : null;
string numberString = null;
// Check for channel number with the format from SatIp
// #EXTINF:0,84. VOX Schweiz
// #EXTINF:0,84.0 - VOX Schweiz
if (!string.IsNullOrWhiteSpace(nameInExtInf))
{
var numberIndex = nameInExtInf.IndexOf(' ');
if (numberIndex > 0)
{
var numberPart = nameInExtInf.Substring(0, numberIndex).Trim(new[] { ' ', '.' });
if (double.TryParse(numberPart, NumberStyles.Any, CultureInfo.InvariantCulture, out var number))
{
numberString = numberPart;
}
}
}
if (!string.IsNullOrWhiteSpace(numberString))
{
numberString = numberString.Trim();
}
if (!IsValidChannelNumber(numberString))
{
if (attributes.TryGetValue("tvg-id", out string value))
{
if (double.TryParse(value, NumberStyles.Any, CultureInfo.InvariantCulture, out var doubleValue))
{
numberString = value;
}
}
}
if (!string.IsNullOrWhiteSpace(numberString))
{
numberString = numberString.Trim();
}
if (!IsValidChannelNumber(numberString))
{
if (attributes.TryGetValue("channel-id", out string value))
{
numberString = value;
}
}
if (!string.IsNullOrWhiteSpace(numberString))
{
numberString = numberString.Trim();
}
if (!IsValidChannelNumber(numberString))
{
numberString = null;
}
if (string.IsNullOrWhiteSpace(numberString))
{
if (string.IsNullOrWhiteSpace(mediaUrl))
{
numberString = null;
}
else
{
try
{
numberString = Path.GetFileNameWithoutExtension(mediaUrl.Split('/').Last());
if (!IsValidChannelNumber(numberString))
{
numberString = null;
}
}
catch
{
// Seeing occasional argument exception here
numberString = null;
}
}
}
return numberString;
}
private static bool IsValidChannelNumber(string numberString)
{
if (string.IsNullOrWhiteSpace(numberString) ||
string.Equals(numberString, "-1", StringComparison.OrdinalIgnoreCase) ||
string.Equals(numberString, "0", StringComparison.OrdinalIgnoreCase))
{
return false;
}
if (!double.TryParse(numberString, NumberStyles.Any, CultureInfo.InvariantCulture, out var value))
{
return false;
}
return true;
}
private static string GetChannelName(string extInf, Dictionary<string, string> attributes)
{
var nameParts = extInf.Split(new[] { ',' }, StringSplitOptions.RemoveEmptyEntries);
var nameInExtInf = nameParts.Length > 1 ? nameParts.Last().Trim() : null;
// Check for channel number with the format from SatIp
// #EXTINF:0,84. VOX Schweiz
// #EXTINF:0,84.0 - VOX Schweiz
if (!string.IsNullOrWhiteSpace(nameInExtInf))
{
var numberIndex = nameInExtInf.IndexOf(' ');
if (numberIndex > 0)
{
var numberPart = nameInExtInf.Substring(0, numberIndex).Trim(new[] { ' ', '.' });
if (double.TryParse(numberPart, NumberStyles.Any, CultureInfo.InvariantCulture, out var number))
{
//channel.Number = number.ToString();
nameInExtInf = nameInExtInf.Substring(numberIndex + 1).Trim(new[] { ' ', '-' });
}
}
}
attributes.TryGetValue("tvg-name", out string name);
if (string.IsNullOrWhiteSpace(name))
{
name = nameInExtInf;
}
if (string.IsNullOrWhiteSpace(name))
{
attributes.TryGetValue("tvg-id", out name);
}
if (string.IsNullOrWhiteSpace(name))
{
name = null;
}
return name;
}
private static Dictionary<string, string> ParseExtInf(string line, out string remaining)
{
var dict = new Dictionary<string, string>(StringComparer.OrdinalIgnoreCase);
var reg = new Regex(@"([a-z0-9\-_]+)=\""([^""]+)\""", RegexOptions.IgnoreCase);
var matches = reg.Matches(line);
remaining = line;
foreach (Match match in matches)
{
var key = match.Groups[1].Value;
var value = match.Groups[2].Value;
dict[match.Groups[1].Value] = match.Groups[2].Value;
remaining = remaining.Replace(key + "=\"" + value + "\"", string.Empty, StringComparison.OrdinalIgnoreCase);
}
return dict;
}
}
}