/**
* Return a File for the application plugin
* from a Hit Packet
* */
public static G2File ParseHit(G2PacketH hit,FileLocationFound location)
{
// for now we dont take into accounts host of partial files
if (isPartialFile(hit) && !Settings.ACCEPT_PARTIAL_FILE)
return null;
string FileName = "";
long size = getNameAndSizeFromHit (hit, out FileName);
if (size == 0)
return null; // no size, no name or bug
List<URN> Hashes = getHashesFromHit (hit);
TypeHash type = TypeHash.Md4EDonkey;
URN SingleHash = Hashes.Find (FindED2KHash);
if (SingleHash == null) {
SingleHash = Hashes.Find (FindSHA1Hash);
type = TypeHash.Sha1;
}
// if there is not the hashes we want , we dont want this packet
// for now. ActionInnoncence DLL needs to take care of more hashes
if (SingleHash == null)
return null;
// gives a text representation of the hash
string strHash = BitConverter.ToString(SingleHash.Digest).Replace("-", string.Empty).ToLower();
string link = getDownloadLink (hit);
Metadata meta = Metadata.ParseMetadata(hit.getStringFromChildType(G2PacketType.MD));
G2File f = new G2File(FileName, strHash, SingleHash.Digest, type, size,
FileType.Unknow, meta.Codec, location, meta.Length, Settings.PROTOCOL_NAME, link);
f.Hashes = Hashes;
f.CreationTime = getCreationTimeFromHit(hit);
f.Metadata = meta;
f.UserComment = hit.getStringFromChildType(G2PacketType.COM);
f.PreviewUrl = hit.getStringFromChildType( G2PacketType.PVU);
return f;
}
public static G2Packet getPacketByHeader(Header h)
{
G2Packet packet = null;
switch(h.type) {
case G2PacketType.PVU:
packet = new G2PacketPVU (h);
break;
case G2PacketType.COM:
packet = new G2PacketCOM (h);
break;
case G2PacketType.PART:
packet = new G2PacketPART(h);
break;
case G2PacketType.SZ:
packet = new G2PacketSZ (h);
break;
case G2PacketType.Q2:
packet = new G2PacketQ2 (h);
break;
case G2PacketType.DN:
packet = new G2PacketDN (h);
break;
case G2PacketType.KHL:
packet = new G2PacketKHL (h);
break;
case G2PacketType.QA:
packet = new G2PacketQA (h);
break;
case G2PacketType.SS:
packet = new G2PacketSS (h);
break;
case G2PacketType.QH2:
packet = new G2PacketQH2 (h);
break;
case G2PacketType.HG:
packet = new G2PacketHG (h);
break;
case G2PacketType.PI:
packet = new G2PacketPI (h);
break;
case G2PacketType.UDP:
packet = new G2PacketUDP (h);
break;
case G2PacketType.PO:
packet = new G2PacketPO (h);
break;
case G2PacketType.S:
packet = new G2PacketS(h);
break;
case G2PacketType.D:
packet = new G2PacketD(h);
break;
case G2PacketType.LNI:
packet = new G2PacketLNI (h);
break;
case G2PacketType.GU:
packet = new G2PacketGU (h);
break;
case G2PacketType.NA:
packet = new G2PacketNA (h);
break;
case G2PacketType.QKR:
packet = new G2PacketQKR (h);
break;
case G2PacketType.QKA:
packet = new G2PacketQKA (h);
break;
case G2PacketType.SNA:
packet = new G2PacketSNA (h);
break;
case G2PacketType.QNA:
packet = new G2PacketQNA (h);
break;
case G2PacketType.V:
packet = new G2PacketV (h);
break;
case G2PacketType.LS:
packet = new G2PacketLS (h);
break;
case G2PacketType.HS:
packet = new G2PacketHS (h);
break;
case G2PacketType.TLS:
packet = new G2PacketTLS (h);
break;
case G2PacketType.TS:
packet = new G2PacketTS (h);
break;
case G2PacketType.NH:
packet = new G2PacketNH (h);
break;
case G2PacketType.RA:
packet = new G2PacketRA (h);
break;
case G2PacketType.BUP:
packet = new G2PacketBUP (h);
break;
case G2PacketType.H:
packet = new G2PacketH (h);
break;
case G2PacketType.URL:
packet = new G2PacketURL (h);
break;
case G2PacketType.URN:
packet = new G2PacketURN (h);
break;
case G2PacketType.UPRO:
packet = new G2PacketUPRO (h);
break;
case G2PacketType.NICK:
packet = new G2PacketNICK (h);
break;
case G2PacketType.BH:
packet = new G2PacketBH (h);
break;
case G2PacketType.FW:
packet = new G2PacketFW (h);
break;
case G2PacketType.MD:
packet = new G2PacketMD (h);
break;
case G2PacketType.UPROC:
packet = new G2PacketUPROC(h);
break;
case G2PacketType.UPROD :
packet = new G2PacketUPROD(h);
break;
case G2PacketType.XML:
packet = new G2PacketXML(h);
break;
default :
packet = new G2PacketDefault (h);
break;
}
return packet;
}
public static G2Packet getPacketByHeader(Header h)
{
G2Packet packet = null;
switch (h.type)
{
case G2PacketType.PVU:
packet = new G2PacketPVU(h);
break;
case G2PacketType.COM:
packet = new G2PacketCOM(h);
break;
case G2PacketType.PART:
packet = new G2PacketPART(h);
break;
case G2PacketType.SZ:
packet = new G2PacketSZ(h);
break;
case G2PacketType.Q2:
packet = new G2PacketQ2(h);
break;
case G2PacketType.DN:
packet = new G2PacketDN(h);
break;
case G2PacketType.KHL:
packet = new G2PacketKHL(h);
break;
case G2PacketType.QA:
packet = new G2PacketQA(h);
break;
case G2PacketType.SS:
packet = new G2PacketSS(h);
break;
case G2PacketType.QH2:
packet = new G2PacketQH2(h);
break;
case G2PacketType.HG:
packet = new G2PacketHG(h);
break;
case G2PacketType.PI:
packet = new G2PacketPI(h);
break;
case G2PacketType.UDP:
packet = new G2PacketUDP(h);
break;
case G2PacketType.PO:
packet = new G2PacketPO(h);
break;
case G2PacketType.S:
packet = new G2PacketS(h);
break;
case G2PacketType.D:
packet = new G2PacketD(h);
break;
case G2PacketType.LNI:
packet = new G2PacketLNI(h);
break;
case G2PacketType.GU:
packet = new G2PacketGU(h);
break;
case G2PacketType.NA:
packet = new G2PacketNA(h);
break;
case G2PacketType.QKR:
packet = new G2PacketQKR(h);
break;
case G2PacketType.QKA:
packet = new G2PacketQKA(h);
break;
case G2PacketType.SNA:
packet = new G2PacketSNA(h);
break;
case G2PacketType.QNA:
packet = new G2PacketQNA(h);
break;
case G2PacketType.V:
packet = new G2PacketV(h);
break;
case G2PacketType.LS:
packet = new G2PacketLS(h);
break;
case G2PacketType.HS:
packet = new G2PacketHS(h);
break;
case G2PacketType.TLS:
packet = new G2PacketTLS(h);
break;
case G2PacketType.TS:
packet = new G2PacketTS(h);
break;
case G2PacketType.NH:
packet = new G2PacketNH(h);
break;
case G2PacketType.RA:
packet = new G2PacketRA(h);
break;
case G2PacketType.BUP:
packet = new G2PacketBUP(h);
break;
case G2PacketType.H:
packet = new G2PacketH(h);
break;
case G2PacketType.URL:
packet = new G2PacketURL(h);
break;
case G2PacketType.URN:
packet = new G2PacketURN(h);
break;
case G2PacketType.UPRO:
packet = new G2PacketUPRO(h);
break;
case G2PacketType.NICK:
packet = new G2PacketNICK(h);
break;
case G2PacketType.BH:
packet = new G2PacketBH(h);
break;
case G2PacketType.FW:
packet = new G2PacketFW(h);
break;
case G2PacketType.MD:
packet = new G2PacketMD(h);
break;
case G2PacketType.UPROC:
packet = new G2PacketUPROC(h);
break;
case G2PacketType.UPROD:
packet = new G2PacketUPROD(h);
break;
case G2PacketType.XML:
packet = new G2PacketXML(h);
break;
default:
packet = new G2PacketDefault(h);
break;
}
return(packet);
}
private static bool isPartialFile(G2PacketH hit)
{
G2Packet part = hit.getFirstChildPacket(G2PacketType.PART);
if (part != null)
return true;
return false;
}
/**
* Return the size of the file and the name with the out parameters name
* */
private static long getNameAndSizeFromHit(G2PacketH hit, out string name)
{
G2Packet SZ,DN;
DN = hit.getFirstChildPacket (G2PacketType.DN);
SZ = hit.getFirstChildPacket (G2PacketType.SZ);
name = "";
if (DN == null) // no name
return 0;
// object size packet is not present
// so we parse DN with a 32 bit integer before
if ( SZ == null) {
byte[] bytes = ((G2PacketDN)DN).bytes;
byte[] bName = bytes.SubArray (4, bytes.Length - 4);
long size = BinaryUtils.getVariableIntLE (bytes, 4);
name = BinaryUtils.getStringFromBytes (bName, (int)(bytes.Length - 4));
return size;
} else {
name = ((G2PacketDN)DN).Str;
return ((G2PacketSZ)SZ).Size;
}
}
/**
* Parse all hashes contained for this file
* */
private static List<URN> getHashesFromHit(G2PacketH hit)
{
List<URN> hashes = new List<URN> ();
foreach (G2Packet child in hit.children) {
if (child.type != G2PacketType.URN)
continue;
G2PacketURN UrnPacket = child as G2PacketURN;
if (UrnPacket == null)
continue;
hashes.Add (UrnPacket.urn);
}
return hashes;
}
/**
* Get a URL link if present
* IF not present , it has to beretrieved by HTTP request
* */
private static string getDownloadLink(G2PacketH hit)
{
G2Packet pack = hit.getFirstChildPacket (G2PacketType.URL);
if (pack == null)
return "";
G2PacketURL url = pack as G2PacketURL;
if (url == null)
return "";
return url.Str;
}
/**
* Return creation time in DateTime format if present
* otherwise return current time
* */
private static DateTime getCreationTimeFromHit(G2PacketH hit)
{
G2Packet pack = hit.getFirstChildPacket (G2PacketType.CT);
if (pack == null)
return DateTime.Now;
G2PacketCT ct = pack as G2PacketCT;
return BinaryUtils.UnixTimeStampToDateTime (ct.Timestamp);
}