/// <summary>
/// Returns a list of all engines available for use with the given context.
/// </summary>
public static List <EngineInfo> GetEngines(GpgContext ctx)
{
var engineInfoPtr = GpgMeWrapper.gpgme_ctx_get_engine_info(ctx.Handle);
var engineInfo = Marshal.PtrToStructure <GpgMeEngineInfo>(engineInfoPtr);
return(engineInfo.ToList());
}
/// <summary>
/// Returns a list of all engines available for use.
/// </summary>
public static List <EngineInfo> GetEngines()
{
GpgMeEngineInfo info;
ErrorHandler.Check(GpgMeWrapper.gpgme_get_engine_info(out info));
return(info.ToList());
}
public static int Read(IntPtr dh, byte[] buffer, int offset, int count)
{
// Allocate an unmanaged memory buffer
var bufPtr = Marshal.AllocHGlobal(count);
// Allow GpgMe to fill the unmanaged buffer
var read = GpgMeWrapper.gpgme_data_read(dh, bufPtr, count);
// Copy the unmanaged buffer into the managed buffer
Marshal.Copy(bufPtr, buffer, offset, count);
// And free the unmanaged buffer
Marshal.FreeHGlobal(bufPtr);
return(read);
}
public static void Write(IntPtr dh, byte[] buffer, int offset, int count)
{
// Copy the relevant data into a zero-offset buffer
var copyBuffer = new byte[count];
Array.Copy(buffer, offset, copyBuffer, 0, count);
// Send the zero-offset buffer to GPG
var written = GpgMeWrapper.gpgme_data_write(dh, copyBuffer, count);
if (written != count)
{
throw new InvalidOperationException("Unable to write all data to the GPG buffer.");
}
}
/// <summary>
/// Searches the keyring for all keys that match the given search parameters,
/// and stops the search as soon as the first match is found.
/// </summary>
public static GpgKey FindKey(GpgContext ctx, string pattern, bool privateOnly)
{
ErrorHandler.Check(GpgMeWrapper.gpgme_op_keylist_start(ctx.Handle, pattern, privateOnly));
// Grab the first key
IntPtr keyPtr;
var result = GpgMeWrapper.gpgme_op_keylist_next(ctx.Handle, out keyPtr);
if (result != GpgMeError.GPG_ERR_NO_ERROR)
{
return(null);
}
// If the operation succeeds, keyPtr will have been assigned a value.
// Grab the GpgMeKey structure belonging to the pointer
var key = Marshal.PtrToStructure <GpgMeKey>(keyPtr);
// Turn the GpgMeKey into a GpgKey (resolves the subkeys and uids linked lists)
return(key.ToGpgKey(keyPtr));
}
/// <summary>
/// Read a GpgME data buffer into a C# byte buffer.
/// </summary>
public static byte[] ReadBuffer(IntPtr dh, int bufferSize = 4096)
{
var allData = new List <byte>();
int read;
do
{
// Allocate an unmanaged memory buffer
var bufPtr = Marshal.AllocHGlobal(bufferSize);
// Allow GpgMe to fill the unmanaged buffer
read = GpgMeWrapper.gpgme_data_read(dh, bufPtr, bufferSize);
// Copy the unmanaged buffer into a managed buffer
var buffer = new byte[bufferSize];
Marshal.Copy(bufPtr, buffer, 0, bufferSize);
// And free the unmanaged buffer
Marshal.FreeHGlobal(bufPtr);
allData.AddRange(buffer.Take(read));
} while (read == bufferSize);
// All those copies are pretty slow, but for now, we'll just have to live with that.
return(allData.ToArray());
}
/// <summary>
/// Searches the keyring for all keys that match the given search parameters.
/// </summary>
public static IEnumerable <GpgKey> FindKeys(GpgContext ctx, string pattern, bool privateOnly)
{
// Start the key listing operation
ErrorHandler.Check(GpgMeWrapper.gpgme_op_keylist_start(ctx.Handle, pattern, privateOnly));
// Grab the first key
IntPtr keyPtr;
var result = GpgMeWrapper.gpgme_op_keylist_next(ctx.Handle, out keyPtr);
while (result == GpgMeError.GPG_ERR_NO_ERROR)
{
// If the operation succeeds, keyPtr will have been assigned a value.
// Grab the GpgMeKey structure belonging to the pointer
var key = Marshal.PtrToStructure <GpgMeKey>(keyPtr);
// Turn the GpgMeKey into a GpgKey (resolves the subkeys and uids linked lists)
yield return(key.ToGpgKey(keyPtr));
// Try grabbing the next key
result = GpgMeWrapper.gpgme_op_keylist_next(ctx.Handle, out keyPtr);
}
// End the key listing operation
ErrorHandler.Check(GpgMeWrapper.gpgme_op_keylist_end(ctx.Handle));
}
