50 lines
2.2 KiB
Vala
50 lines
2.2 KiB
Vala
using Dino.Entities;
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namespace Dino.Plugins.OpenPgp {
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public class PgpFileDecryptor : FileDecryptor, Object {
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public Encryption get_encryption() {
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return Encryption.PGP;
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}
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public FileReceiveData prepare_get_meta_info(Conversation conversation, FileTransfer file_transfer, FileReceiveData receive_data) {
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return receive_data;
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}
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public FileMeta prepare_download_file(Conversation conversation, FileTransfer file_transfer, FileReceiveData receive_data, FileMeta file_meta) {
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return file_meta;
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}
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public bool can_decrypt_file(Conversation conversation, FileTransfer file_transfer, FileReceiveData receive_data) {
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return file_transfer.file_name.has_suffix("pgp") || file_transfer.mime_type == "application/pgp-encrypted";
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}
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public async InputStream decrypt_file(InputStream encrypted_stream, Conversation conversation, FileTransfer file_transfer, FileReceiveData receive_data) throws FileReceiveError {
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try {
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uint8[] buf = new uint8[256];
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ByteArray data = new ByteArray();
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size_t len = -1;
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do {
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len = yield encrypted_stream.read_async(buf);
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data.append(buf[0:len]);
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} while(len > 0);
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GPGHelper.DecryptedData clear_data = GPGHelper.decrypt_data(data.data);
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file_transfer.encryption = Encryption.PGP;
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if (clear_data.filename != null && clear_data.filename != "") {
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debug("Decrypting file %s from %s", clear_data.filename, file_transfer.file_name);
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file_transfer.file_name = clear_data.filename;
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} else if (file_transfer.file_name.has_suffix(".pgp")) {
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debug("Decrypting file %s from %s", file_transfer.file_name.substring(0, file_transfer.file_name.length - 4), file_transfer.file_name);
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file_transfer.file_name = file_transfer.file_name.substring(0, file_transfer.file_name.length - 4);
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}
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return new MemoryInputStream.from_data(clear_data.data, GLib.free);
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} catch (Error e) {
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throw new FileReceiveError.DECRYPTION_FAILED("PGP file decryption error: %s".printf(e.message));
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}
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}
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}
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}
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