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jellyfin/Emby.Server.Implementations/LiveTv/TunerHosts/M3uParser.cs

331 lines
12 KiB

#nullable disable
#pragma warning disable CS1591
using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Net.Http;
using System.Text.RegularExpressions;
using System.Threading;
using System.Threading.Tasks;
using Jellyfin.Extensions;
using MediaBrowser.Common.Extensions;
using MediaBrowser.Common.Net;
using MediaBrowser.Controller.LiveTv;
using MediaBrowser.Model.IO;
using MediaBrowser.Model.LiveTv;
using Microsoft.Extensions.Logging;
namespace Emby.Server.Implementations.LiveTv.TunerHosts
{
public class M3uParser
{
private const string ExtInfPrefix = "#EXTINF:";
private readonly ILogger _logger;
private readonly IHttpClientFactory _httpClientFactory;
public M3uParser(ILogger logger, IHttpClientFactory httpClientFactory)
{
_logger = logger;
_httpClientFactory = httpClientFactory;
}
public async Task<List<ChannelInfo>> Parse(TunerHostInfo info, string channelIdPrefix, CancellationToken cancellationToken)
{
// Read the file and display it line by line.
using (var reader = new StreamReader(await GetListingsStream(info, cancellationToken).ConfigureAwait(false)))
{
return await GetChannelsAsync(reader, channelIdPrefix, info.Id).ConfigureAwait(false);
}
}
public async Task<Stream> GetListingsStream(TunerHostInfo info, CancellationToken cancellationToken)
{
ArgumentNullException.ThrowIfNull(info);
if (!info.Url.StartsWith("http", StringComparison.OrdinalIgnoreCase))
{
return AsyncFile.OpenRead(info.Url);
}
using var requestMessage = new HttpRequestMessage(HttpMethod.Get, info.Url);
if (!string.IsNullOrEmpty(info.UserAgent))
{
requestMessage.Headers.UserAgent.TryParseAdd(info.UserAgent);
}
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// Set HttpCompletionOption.ResponseHeadersRead to prevent timeouts on larger files
var response = await _httpClientFactory.CreateClient(NamedClient.Default)
.SendAsync(requestMessage, HttpCompletionOption.ResponseHeadersRead, cancellationToken)
.ConfigureAwait(false);
response.EnsureSuccessStatusCode();
return await response.Content.ReadAsStreamAsync(cancellationToken);
}
private async Task<List<ChannelInfo>> GetChannelsAsync(TextReader reader, string channelIdPrefix, string tunerHostId)
{
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var channels = new List<ChannelInfo>();
string extInf = string.Empty;
await foreach (var line in reader.ReadAllLinesAsync().ConfigureAwait(false))
{
var trimmedLine = line.Trim();
if (string.IsNullOrWhiteSpace(trimmedLine))
{
continue;
}
if (trimmedLine.StartsWith("#EXTM3U", StringComparison.OrdinalIgnoreCase))
{
continue;
}
if (trimmedLine.StartsWith(ExtInfPrefix, StringComparison.OrdinalIgnoreCase))
{
extInf = trimmedLine.Substring(ExtInfPrefix.Length).Trim();
}
else if (!string.IsNullOrWhiteSpace(extInf) && !trimmedLine.StartsWith('#'))
{
var channel = GetChannelnfo(extInf, tunerHostId, trimmedLine);
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if (string.IsNullOrWhiteSpace(channel.Id))
{
channel.Id = channelIdPrefix + trimmedLine.GetMD5().ToString("N", CultureInfo.InvariantCulture);
}
else
{
channel.Id = channelIdPrefix + channel.Id.GetMD5().ToString("N", CultureInfo.InvariantCulture);
}
channel.Path = trimmedLine;
channels.Add(channel);
_logger.LogInformation("Parsed channel: {ChannelName}", channel.Name);
extInf = string.Empty;
}
}
return channels;
}
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private ChannelInfo GetChannelnfo(string extInf, string tunerHostId, string mediaUrl)
{
var channel = new ChannelInfo()
{
TunerHostId = tunerHostId
};
extInf = extInf.Trim();
var attributes = ParseExtInf(extInf, out string remaining);
extInf = remaining;
if (attributes.TryGetValue("tvg-logo", out string tvgLogo))
{
channel.ImageUrl = tvgLogo;
}
else if (attributes.TryGetValue("logo", out string logo))
{
channel.ImageUrl = logo;
}
if (attributes.TryGetValue("group-title", out string groupTitle))
{
channel.ChannelGroup = groupTitle;
}
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);
}
return channel;
}
private string GetChannelNumber(string extInf, Dictionary<string, string> attributes, string mediaUrl)
{
var nameParts = extInf.Split(',', StringSplitOptions.RemoveEmptyEntries);
var nameInExtInf = nameParts.Length > 1 ? nameParts[^1].AsSpan().Trim() : ReadOnlySpan<char>.Empty;
string numberString = null;
if (attributes.TryGetValue("tvg-chno", out var attributeValue)
&& double.TryParse(attributeValue, CultureInfo.InvariantCulture, out _))
{
numberString = attributeValue;
}
if (!IsValidChannelNumber(numberString))
{
if (attributes.TryGetValue("tvg-id", out attributeValue))
{
if (double.TryParse(attributeValue, CultureInfo.InvariantCulture, out _))
{
numberString = attributeValue;
}
else if (attributes.TryGetValue("channel-id", out attributeValue)
&& double.TryParse(attributeValue, CultureInfo.InvariantCulture, out _))
{
numberString = attributeValue;
}
}
if (string.IsNullOrWhiteSpace(numberString))
{
// Using this as a fallback now as this leads to Problems with channels like "5 USA"
// where 5 isn't meant to be the channel number
// Check for channel number with the format from SatIp
// #EXTINF:0,84. VOX Schweiz
// #EXTINF:0,84.0 - VOX Schweiz
if (!nameInExtInf.IsEmpty && !nameInExtInf.IsWhiteSpace())
{
var numberIndex = nameInExtInf.IndexOf(' ');
if (numberIndex > 0)
{
var numberPart = nameInExtInf.Slice(0, numberIndex).Trim(new[] { ' ', '.' });
if (double.TryParse(numberPart, CultureInfo.InvariantCulture, out _))
{
numberString = numberPart.ToString();
}
}
}
}
}
if (!IsValidChannelNumber(numberString))
{
numberString = null;
}
if (!string.IsNullOrWhiteSpace(numberString))
{
numberString = numberString.Trim();
}
else
{
if (string.IsNullOrWhiteSpace(mediaUrl))
{
numberString = null;
}
else
{
try
{
numberString = Path.GetFileNameWithoutExtension(mediaUrl.AsSpan().RightPart('/')).ToString();
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.Ordinal)
|| string.Equals(numberString, "0", StringComparison.Ordinal))
{
return false;
}
return double.TryParse(numberString, CultureInfo.InvariantCulture, out _);
}
private static string GetChannelName(string extInf, Dictionary<string, string> attributes)
{
var nameParts = extInf.Split(',', StringSplitOptions.RemoveEmptyEntries);
var nameInExtInf = nameParts.Length > 1 ? nameParts[^1].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(' ', StringComparison.Ordinal);
if (numberIndex > 0)
{
var numberPart = nameInExtInf.Substring(0, numberIndex).Trim(new[] { ' ', '.' });
if (double.TryParse(numberPart, CultureInfo.InvariantCulture, out _))
{
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// channel.Number = number.ToString();
nameInExtInf = nameInExtInf.Substring(numberIndex + 1).Trim(new[] { ' ', '-' });
}
}
}
string name = nameInExtInf;
if (string.IsNullOrWhiteSpace(name))
{
attributes.TryGetValue("tvg-name", out name);
}
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 matches = Regex.Matches(line, @"([a-z0-9\-_]+)=\""([^""]+)\""", RegexOptions.IgnoreCase);
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remaining = line;
foreach (Match match in matches)
{
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var key = match.Groups[1].Value;
var value = match.Groups[2].Value;
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dict[match.Groups[1].Value] = match.Groups[2].Value;
remaining = remaining.Replace(key + "=\"" + value + "\"", string.Empty, StringComparison.OrdinalIgnoreCase);
}
return dict;
}
}
}