/// <summary>
/// Decode base 64 data, unzip binary stream and retrieve each part
/// </summary>
/// <param name="base64data">Base 64 encoded data containing MMS message in ZIP file format</param>
/// <returns></returns>
private MMSMessage.MessagePartCollection GetParts(string base64data)
{
MMSMessage.MessagePartCollection coll = new MMSMessage.MessagePartCollection();
MemoryStream ms = new MemoryStream(Convert.FromBase64String(base64data));
// Extract files and add them
ZipInputStream s = new ZipInputStream(ms);
ZipEntry theEntry;
int i = 0;
while ((theEntry = s.GetNextEntry()) != null)
{
MMSMessagePart part = new MMSMessagePart();
part.PartId = i;
string fileName = theEntry.Name;
if (fileName != String.Empty)
{
part.Name = fileName;
//Read Part into memorystream
int size = 2048;
int len = 0;
MemoryStream mspart = new MemoryStream(size);
byte[] partData = new byte[size];
while (true)
{
size = s.Read(partData, 0, partData.Length);
len += size;
if (size > 0)
{
mspart.Write(partData, 0, size);
}
else
{
break;
}
}
part.Data = new byte[len];
mspart.Position = 0; // Reset position and read into byte buffer
mspart.Read(part.Data, 0, len);
mspart.Close();
}
coll.Add(i, part);
i++;
}
s.Close();
return(coll);
}
public void LoadCompressed(Stream stream)
{
Parts.Clear();
ZipInputStream s = new ZipInputStream(stream); // Do NOT dispose, as it will close stream aswell, wich might not be what user wants
ZipEntry theEntry;
int i = 0;
while ((theEntry = s.GetNextEntry()) != null)
{
MMSMessagePart part = new MMSMessagePart {
PartId = i
};
string fileName = theEntry.Name;
if (fileName != String.Empty)
{
part.Name = fileName;
int size = 2048;
int len = 0;
using (MemoryStream mspart = new MemoryStream(size))
{
byte[] partData = new byte[size];
while (true)
{
size = s.Read(partData, 0, partData.Length);
len += size;
if (size > 0)
{
mspart.Write(partData, 0, size);
}
else
{
break;
}
}
part.Data = new byte[len];
mspart.Position = 0;
// Reset position and read into byte buffer
mspart.Read(part.Data, 0, len);
mspart.Close();
}
}
Parts.Add(i, part);
i++;
}
s.Close();
}
/// <summary>
/// Pack up the content of this MMSMessage as a zip file for suitable transmission
/// to the MMS Gateway
/// </summary>
/// <returns>Byte array containing zipped data</returns>
internal byte[] GetCompressed()
{
using (MemoryStream msZipOutput = new MemoryStream())
{
ZipOutputStream os = new ZipOutputStream(msZipOutput)
{
IsStreamOwner = false, UseZip64 = UseZip64.Off
};
foreach (int i in Parts.Keys)
{
MMSMessagePart part = Parts[i];
os.PutNextEntry(new ZipEntry(part.Name));
os.Write(part.Data, 0, part.Data.Length);
os.CloseEntry();
}
os.Finish();
os.Close();
byte[] b = new byte[msZipOutput.Length];
msZipOutput.Position = 0;
msZipOutput.Read(b, 0, b.Length);
msZipOutput.Close();
return(b);
}
}
public void Add(int key, MMSMessagePart value)
{
Dictionary.Add(key, value);
}