/// <summary>Add the given file to the container to be signed.</summary>
/// <param name="filename">Path to the file to add.</param>
/// <param name="mimetype">The MIME type of the file.</param>
/// <param name="charset">The character set the file is encoded in.</param>
public void addDataFile(string filename, string mimetype, string charset)
{
ComDataFile df = new ComDataFile();
sd.createDataFile(filename, ComConstants.COM_CONTENT_EMBEDDED_BASE64, mimetype, 0, null, 0, ComConstants.COM_DIGEST_SHA1_NAME, charset, df);
sd.calculateDataFileSizeAndDigest(df.szId, filename, ComConstants.COM_DIGEST_SHA1);
}
/// <summary>
/// Read the contents of the first data file in the container. The server response should contain
/// no more data files.
/// </summary>
/// <returns>The contents of the response.</returns>
public string getContent()
{
if (sdoc.nDataFiles < 1)
{
throw new Exception("No data files in the container");
}
/* For our purposes, we can get away with reading only the first one. */
ComDataFile df = new ComDataFile();
sdoc.getDataFile(0, df);
/* Since we have the container already read to memory, we do not need to read it from disk again.
* But extractDataFile checks for the unused parameters anyway, so give some dummy values. */
string filename = Path.GetTempFileName();
int err = ddl.extractDataFile(sdoc, "not used", filename, df.szId, "not used");
if (err != 0)
{
throw new Exception("Error extracting data file: " + ei.getErrorStringByCode(err));
}
/* Since the COM-library only supports extracting to file, then read it back in. */
StringBuilder buf = new StringBuilder();
using (StreamReader sr = new StreamReader(filename))
{
String line;
while ((line = sr.ReadLine()) != null)
{
buf.AppendLine(line);
}
}
return(buf.ToString());
}
