/**
* CL_CheckOrDownloadFile returns true if the file exists,
* otherwise it attempts to start a
* download from the server.
*/
public static bool CheckOrDownloadFile(string filename)
{
if (filename.IndexOf("..") != -1)
{
Com.Printf("Refusing to download a path with ..\n");
return(true);
}
if (FS.FileLength(filename) > 0)
{
// it exists, no need to download
return(true);
}
Globals.cls.downloadname = filename;
// download to a temp name, and only rename
// to the real name when done, so if interrupted
// a runt file wont be left
Globals.cls.downloadtempname = Com.StripExtension(Globals.cls.downloadname);
Globals.cls.downloadtempname += ".tmp";
// ZOID
// check to see if we already have a tmp for this file, if so, try to
// resume
// open the file if not opened yet
var name = CL_parse.DownloadFileName(Globals.cls.downloadtempname);
Stream fp = File.OpenWrite(name);
if (fp != null)
{
// it exists
long len = 0;
try
{
len = fp.Length;
}
catch (IOException)
{
}
Globals.cls.download = fp;
// give the server an offset to start the download
Com.Printf("Resuming " + Globals.cls.downloadname + "\n");
MSG.WriteByte(Globals.cls.netchan.message, Defines.clc_stringcmd);
MSG.WriteString(Globals.cls.netchan.message, "download " + Globals.cls.downloadname + " " + len);
}
else
{
Com.Printf("Downloading " + Globals.cls.downloadname + "\n");
MSG.WriteByte(Globals.cls.netchan.message, Defines.clc_stringcmd);
MSG.WriteString(Globals.cls.netchan.message, "download " + Globals.cls.downloadname);
}
Globals.cls.downloadnumber++;
return(false);
}
/*
* ===================== CL_ParseDownload
*
* A download message has been received from the server
* =====================
*/
public static void ParseDownload()
{
// read the data
int size = MSG.ReadShort(Globals.net_message);
var percent = MSG.ReadByte(Globals.net_message);
if (size == -1)
{
Com.Printf("Server does not have this file.\n");
if (Globals.cls.download != null)
{
// if here, we tried to resume a file but the server said no
try
{
Globals.cls.download.Close();
}
catch (IOException)
{
}
Globals.cls.download = null;
}
Cl.RequestNextDownload();
return;
}
// open the file if not opened yet
if (Globals.cls.download == null)
{
var name = CL_parse.DownloadFileName(Globals.cls.downloadtempname).ToLower();
FS.CreatePath(name);
Globals.cls.download = File.OpenWrite(name);
if (Globals.cls.download == null)
{
Globals.net_message.readcount += size;
Com.Printf("Failed to open " + Globals.cls.downloadtempname + "\n");
Cl.RequestNextDownload();
return;
}
}
try
{
Globals.cls.download.Write(Globals.net_message.data, Globals.net_message.readcount, size);
}
catch (Exception)
{
}
Globals.net_message.readcount += size;
if (percent != 100)
{
// request next block
// change display routines by zoid
Globals.cls.downloadpercent = percent;
MSG.WriteByte(Globals.cls.netchan.message, Defines.clc_stringcmd);
SZ.Print(Globals.cls.netchan.message, "nextdl");
}
else
{
try
{
Globals.cls.download.Close();
}
catch (IOException)
{
}
// rename the temp file to it's final name
var oldn = CL_parse.DownloadFileName(Globals.cls.downloadtempname);
var newn = CL_parse.DownloadFileName(Globals.cls.downloadname);
File.Move(oldn, newn);
Globals.cls.download = null;
Globals.cls.downloadpercent = 0;
// get another file if needed
Cl.RequestNextDownload();
}
}