public static FullRouteIPInfoCache LoadFromBuf(Buf b)
{
b.Seek(b.Size - 20, SeekOrigin.Begin);
byte[] hash = b.Read(20);
b.SeekToBegin();
byte[] hash2 = Secure.HashSHA1(Util.CopyByte(b.ByteData, 0, (int)b.Size - 20));
if (Util.CompareByte(hash, hash2) == false)
{
throw new ApplicationException("Invalid Hash");
}
FullRouteIPInfoCache ret = new FullRouteIPInfoCache();
ret.TimeStamp = new DateTime((long)b.ReadInt64());
int num = (int)b.ReadInt();
int i;
for (i = 0; i < num; i++)
{
FullRouteIPInfoEntry e = new FullRouteIPInfoEntry();
e.From = b.ReadInt();
e.To = b.ReadInt();
e.Registry = b.ReadStr();
e.Assigned = b.ReadInt();
e.Country2 = b.ReadStr();
e.Country3 = b.ReadStr();
e.CountryFull = DeleteSemi(b.ReadStr());
ret.EntryList.Add(e);
}
ret.EntryList.Sort();
ret.build_country_code_to_name_db();
return(ret);
}
public static FullRouteIPInfoCache CreateFromDownload(string url)
{
FullRouteIPInfoCache ret = new FullRouteIPInfoCache();
ret.TimeStamp = DateTime.Now;
// Download CSV
WebRequest req = HttpWebRequest.Create(url);
WebResponse res = req.GetResponse();
try
{
Stream stream = res.GetResponseStream();
try
{
byte[] rawData = Util.ReadAllFromStream(stream);
byte[] data = GZipUtil.Decompress(rawData);
Csv csv = new Csv(new Buf(data));
foreach (CsvEntry ce in csv.Items)
{
if (ce.Count >= 7)
{
FullRouteIPInfoEntry e = new FullRouteIPInfoEntry();
e.From = Str.StrToUInt(ce[2]);
e.To = Str.StrToUInt(ce[3]);
//e.Registry = ce[2];
//e.Assigned = Str.StrToUInt(ce[3]);
e.Country2 = ce[5];
//e.Country3 = ce[5];
e.CountryFull = DeleteSemi(ce[6]);
if (e.From != 0 && e.To != 0)
{
ret.EntryList.Add(e);
}
}
}
ret.EntryList.Sort();
if (ret.EntryList.Count <= 70000)
{
throw new ApplicationException("ret.EntryList.Count <= 70000");
}
}
finally
{
stream.Close();
}
}
finally
{
res.Close();
}
ret.build_country_code_to_name_db();
return(ret);
}
public static FullRouteIPInfoEntry SearchFast(uint ip32)
{
try
{
checkUpdate();
}
catch
{
}
try
{
FullRouteIPInfoCache c = cache;
if (c != null)
{
int low, high, middle, pos;
low = 0;
high = c.EntryList.Count - 1;
pos = int.MaxValue;
while (low <= high)
{
middle = (low + high) / 2;
uint target_from = c.EntryList[middle].From;
if (target_from == ip32)
{
pos = middle;
break;
}
else if (ip32 < target_from)
{
high = middle - 1;
}
else
{
low = middle + 1;
}
}
if (pos == int.MaxValue)
{
pos = low;
}
int pos_start = Math.Max(0, pos - 3);
int pos_end = Math.Min(pos + 3, c.EntryList.Count);
int i;
for (i = pos_start; i < pos_end; i++)
{
FullRouteIPInfoEntry e = c.EntryList[i];
if (ip32 >= e.From && ip32 <= e.To)
{
return(e);
}
}
}
}
catch
{
}
return(null);
}