public async Task <JObject> GetPageConfigAsync(string videoId, TimeSpan timeout)
{
string result;
using (var httpClient = new HttpClient())
{
var builder = new UriBuilder("https://youtube.com/watch?v=" + videoId);
builder.Port = -1;
var query = HttpUtility.ParseQueryString(builder.Query);
query["hl"] = "en";
query["bpctr"] = (DateTime.Now.Ticks / 1000).ToString();
builder.Query = query.ToString();
httpClient.Timeout = timeout;
httpClient.DefaultRequestHeaders.UserAgent.ParseAdd("Mozilla/4.0"); // senza su xamarin forms con android non mi ritornava ytplayer.config
result = await httpClient.GetStringAsync(builder.ToString());
}
string configJson = DataFormatTools.ExtractBetween(result, "ytplayer.config = ", ";ytplayer.load");
if (configJson == null)
{
return(null);
}
return(JObject.Parse(configJson));
}
internal string[] ExtractActions(string content)
{
Match objResult = SignatureRegexes.actionsObjRegexp.Match(content);
Match funcResult = SignatureRegexes.actionsFuncRegexp.Match(content);
if (!objResult.Success || !funcResult.Success)
{
return(null);
}
string obj = objResult.Groups[1].Value.Replace("\\$", "\\\\$");
string objBody = objResult.Groups[2].Value.Replace("\\$", "\\\\$");
string funcBody = funcResult.Groups[1].Value.Replace("\\$", "\\\\$");
Match reverseResult = SignatureRegexes.reverseRegexp.Match(objBody);
Match sliceResult = SignatureRegexes.sliceRegexp.Match(objBody);
Match spliceResult = SignatureRegexes.spliceRegexp.Match(objBody);
Match swapResult = SignatureRegexes.swapRegexp.Match(objBody);
string reverseKey = DataFormatTools.CleanQuotations(reverseResult.Groups[1].Value.Replace("\\$", "\\\\$"));
string sliceKey = DataFormatTools.CleanQuotations(sliceResult.Groups[1].Value.Replace("\\$", "\\\\$"));
string spliceKey = DataFormatTools.CleanQuotations(spliceResult.Groups[1].Value.Replace("\\$", "\\\\$"));
string swapKey = DataFormatTools.CleanQuotations(swapResult.Groups[1].Value.Replace("\\$", "\\\\$"));
string keys = "(" + string.Join("|", reverseKey, sliceKey, spliceKey, swapKey) + ")";
string keyStr = "(?:a=)?" + obj + "(?:\\." + keys + "|\\['" + keys + "'\\]|\\[\"" + keys + "\"\\])\\(a,(\\d+)\\)";
Regex keyRegex = new Regex(keyStr);
List <string> tokens = new List <string>();
MatchCollection matches = keyRegex.Matches(funcBody);
foreach (Match m in matches)
{
string key = m.Groups[1].Value ?? m.Groups[2].Value ?? m.Groups[3].Value;
if (key == swapKey)
{
tokens.Add("w" + m.Groups[4].Value);
}
else if (key == reverseKey)
{
tokens.Add("r");
}
else if (key == sliceKey)
{
tokens.Add("s" + m.Groups[4].Value);
}
else if (key == spliceKey)
{
tokens.Add("p" + m.Groups[4].Value);
}
}
return(tokens.ToArray());
}
