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-rw-r--r--plugins/omemo/src/file_transfer/file_decryptor.vala90
-rw-r--r--plugins/omemo/src/file_transfer/file_encryptor.vala76
2 files changed, 0 insertions, 166 deletions
diff --git a/plugins/omemo/src/file_transfer/file_decryptor.vala b/plugins/omemo/src/file_transfer/file_decryptor.vala
deleted file mode 100644
index 8ae0b96b..00000000
--- a/plugins/omemo/src/file_transfer/file_decryptor.vala
+++ /dev/null
@@ -1,90 +0,0 @@
-using Dino.Entities;
-
-using Dino.Crypto;
-using Omemo;
-
-namespace Dino.Plugins.Omemo {
-
-public class OmemoHttpFileReceiveData : HttpFileReceiveData {
- public string original_url;
-}
-
-public class OmemoFileDecryptor : FileDecryptor, Object {
-
- private Regex url_regex = /^aesgcm:\/\/(.*)#(([A-Fa-f0-9]{2}){48}|([A-Fa-f0-9]{2}){44})$/;
-
- public Encryption get_encryption() {
- return Encryption.OMEMO;
- }
-
- public FileReceiveData prepare_get_meta_info(Conversation conversation, FileTransfer file_transfer, FileReceiveData receive_data) {
- HttpFileReceiveData? http_receive_data = receive_data as HttpFileReceiveData;
- if (http_receive_data == null) assert(false);
- if ((receive_data as OmemoHttpFileReceiveData) != null) return receive_data;
-
- var omemo_http_receive_data = new OmemoHttpFileReceiveData();
- omemo_http_receive_data.url = aesgcm_to_https_link(http_receive_data.url);
- omemo_http_receive_data.original_url = http_receive_data.url;
-
- return omemo_http_receive_data;
- }
-
- public FileMeta prepare_download_file(Conversation conversation, FileTransfer file_transfer, FileReceiveData receive_data, FileMeta file_meta) {
- if (file_meta.file_name != null) {
- file_meta.file_name = file_meta.file_name.split("#")[0];
- }
- return file_meta;
- }
-
- public bool can_decrypt_file(Conversation conversation, FileTransfer file_transfer, FileReceiveData receive_data) {
- HttpFileReceiveData? http_file_receive = receive_data as HttpFileReceiveData;
- if (http_file_receive == null) return false;
-
- return this.url_regex.match(http_file_receive.url) || (receive_data as OmemoHttpFileReceiveData) != null;
- }
-
- public async InputStream decrypt_file(InputStream encrypted_stream, Conversation conversation, FileTransfer file_transfer, FileReceiveData receive_data) throws FileReceiveError {
- const uint KEY_SIZE = 32;
- try {
- OmemoHttpFileReceiveData? omemo_http_receive_data = receive_data as OmemoHttpFileReceiveData;
- if (omemo_http_receive_data == null) assert(false);
-
- // Decode IV and key
- MatchInfo match_info;
- this.url_regex.match(omemo_http_receive_data.original_url, 0, out match_info);
- uint8[] iv_and_key = hex_to_bin(match_info.fetch(2).up());
- uint8[] iv = iv_and_key[0:iv_and_key.length-KEY_SIZE];
- uint8[] key = iv_and_key[iv_and_key.length-KEY_SIZE:iv_and_key.length];
-
- file_transfer.encryption = Encryption.OMEMO;
- debug("Decrypting file %s from %s", file_transfer.file_name, file_transfer.server_file_name);
-
- SymmetricCipherDecryption cipher = create_symmetric_cipher_decryption("AES-GCM");
- cipher.set_key(key);
- cipher.set_iv(iv);
- return new ConverterInputStream(encrypted_stream, new SymmetricCipherDecrypter((owned) cipher, 16));
-
- } catch (Crypto.Error e) {
- throw new FileReceiveError.DECRYPTION_FAILED("OMEMO file decryption error: %s".printf(e.message));
- } catch (GLib.Error e) {
- throw new FileReceiveError.DECRYPTION_FAILED("OMEMO file decryption error: %s".printf(e.message));
- }
- }
-
- private uint8[] hex_to_bin(string hex) {
- uint8[] bin = new uint8[hex.length / 2];
- const string HEX = "0123456789ABCDEF";
- for (int i = 0; i < hex.length / 2; i++) {
- bin[i] = (uint8) (HEX.index_of_char(hex[i*2]) << 4) | HEX.index_of_char(hex[i*2+1]);
- }
- return bin;
- }
-
- private string aesgcm_to_https_link(string aesgcm_link) {
- MatchInfo match_info;
- this.url_regex.match(aesgcm_link, 0, out match_info);
- return "https://" + match_info.fetch(1);
- }
-}
-
-}
diff --git a/plugins/omemo/src/file_transfer/file_encryptor.vala b/plugins/omemo/src/file_transfer/file_encryptor.vala
deleted file mode 100644
index 5f1d6e69..00000000
--- a/plugins/omemo/src/file_transfer/file_encryptor.vala
+++ /dev/null
@@ -1,76 +0,0 @@
-using Gee;
-using Gtk;
-
-using Dino.Crypto;
-using Dino.Entities;
-using Xmpp;
-using Omemo;
-
-namespace Dino.Plugins.Omemo {
-
-public class OmemoHttpFileMeta : HttpFileMeta {
- public uint8[] iv;
- public uint8[] key;
-}
-
-public class OmemoFileEncryptor : Dino.FileEncryptor, Object {
-
- public bool can_encrypt_file(Conversation conversation, FileTransfer file_transfer) {
- return file_transfer.encryption == Encryption.OMEMO;
- }
-
- public FileMeta encrypt_file(Conversation conversation, FileTransfer file_transfer) throws FileSendError {
- const uint KEY_SIZE = 32;
- const uint IV_SIZE = 12;
- var omemo_http_file_meta = new OmemoHttpFileMeta();
-
- try {
- //Create a key and use it to encrypt the file
- uint8[] iv = new uint8[IV_SIZE];
- Crypto.randomize(iv);
- uint8[] key = new uint8[KEY_SIZE];
- Crypto.randomize(key);
-
- SymmetricCipherEncryption cipher = create_symmetric_cipher_encryption("AES-GCM");
- cipher.set_key(key);
- cipher.set_iv(iv);
-
- omemo_http_file_meta.iv = iv;
- omemo_http_file_meta.key = key;
- omemo_http_file_meta.size = file_transfer.size + 16;
- omemo_http_file_meta.content_type = new FileContentType.from_mime_type("application/octet-stream");
- file_transfer.input_stream = new ConverterInputStream(file_transfer.input_stream, new SymmetricCipherEncrypter((owned) cipher, 16));
- } catch (Crypto.Error error) {
- throw new FileSendError.ENCRYPTION_FAILED("OMEMO file encryption error: %s".printf(error.message));
- } catch (GLib.Error error) {
- throw new FileSendError.ENCRYPTION_FAILED("OMEMO file encryption error: %s".printf(error.message));
- }
-
- debug("Encrypting file %s as %s", file_transfer.file_name, file_transfer.server_file_name);
-
- return omemo_http_file_meta;
- }
-
- public FileSendData? preprocess_send_file(Conversation conversation, FileTransfer file_transfer, FileSendData file_send_data, FileMeta file_meta) {
- HttpFileSendData? send_data = file_send_data as HttpFileSendData;
- if (send_data == null) return null;
-
- OmemoHttpFileMeta? omemo_http_file_meta = file_meta as OmemoHttpFileMeta;
- if (omemo_http_file_meta == null) return null;
-
- // Convert iv and key to hex
- string iv_and_key = "";
- foreach (uint8 byte in omemo_http_file_meta.iv) iv_and_key += byte.to_string("%02x");
- foreach (uint8 byte in omemo_http_file_meta.key) iv_and_key += byte.to_string("%02x");
-
- string aesgcm_link = send_data.url_down + "#" + iv_and_key;
- aesgcm_link = "aesgcm://" + aesgcm_link.substring(8); // replace https:// by aesgcm://
-
- send_data.url_down = aesgcm_link;
- send_data.encrypt_message = true;
-
- return file_send_data;
- }
-}
-
-}