Fix some warnings

Instances of `RegexError` are just asserted as `assert_not_reached` as
they cannot really fail except for allocation failure if the given regex
is valid.

3 files changed, 43 insertions, 37 deletions

diff --git a/plugins/omemo/src/file_transfer/file_decryptor.vala b/plugins/omemo/src/file_transfer/file_decryptor.vala
index 6998fef2..bc6f8592 100644
--- a/plugins/omemo/src/file_transfer/file_decryptor.vala
+++ b/plugins/omemo/src/file_transfer/file_decryptor.vala
@@ -38,36 +38,40 @@ public class OmemoFileDecryptor : FileDecryptor, Object {
         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) {
-        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, key;
-        if (iv_and_key.length == 44) {
-            iv = iv_and_key[0:12];
-            key = iv_and_key[12:44];
-        } else {
-            iv = iv_and_key[0:16];
-            key = iv_and_key[16:48];
+    public async InputStream decrypt_file(InputStream encrypted_stream, Conversation conversation, FileTransfer file_transfer, FileReceiveData receive_data) throws FileReceiveError {
+        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, key;
+            if (iv_and_key.length == 44) {
+                iv = iv_and_key[0:12];
+                key = iv_and_key[12:44];
+            } else {
+                iv = iv_and_key[0:16];
+                key = iv_and_key[16:48];
+            }
+
+            // Read data
+            uint8[] buf = new uint8[256];
+            Array<uint8> data = new Array<uint8>(false, true, 0);
+            size_t len = -1;
+            do {
+                len = yield encrypted_stream.read_async(buf);
+                data.append_vals(buf, (uint) len);
+            } while(len > 0);
+
+            // Decrypt
+            uint8[] cleartext = Signal.aes_decrypt(Cipher.AES_GCM_NOPADDING, key, iv, data.data);
+            file_transfer.encryption = Encryption.OMEMO;
+            return new MemoryInputStream.from_data(cleartext);
+        } catch (Error e) {
+            throw new FileReceiveError.DECRYPTION_FAILED("OMEMO file decryption error: %s".printf(e.message));
         }
-
-        // Read data
-        uint8[] buf = new uint8[256];
-        Array<uint8> data = new Array<uint8>(false, true, 0);
-        size_t len = -1;
-        do {
-            len = yield encrypted_stream.read_async(buf);
-            data.append_vals(buf, (uint) len);
-        } while(len > 0);
-
-        // Decrypt
-        uint8[] cleartext = Signal.aes_decrypt(Cipher.AES_GCM_NOPADDING, key, iv, data.data);
-        file_transfer.encryption = Encryption.OMEMO;
-        return new MemoryInputStream.from_data(cleartext);
     }
 
     private uint8[] hex_to_bin(string hex) {
diff --git a/plugins/omemo/src/logic/manager.vala b/plugins/omemo/src/logic/manager.vala
index a71dfd9d..53e02e37 100644
--- a/plugins/omemo/src/logic/manager.vala
+++ b/plugins/omemo/src/logic/manager.vala
@@ -326,22 +326,22 @@ public class Manager : StreamInteractionModule, Object {
                 store.identity_key_store.local_registration_id = Random.int_range(1, int32.MAX);
 
                 Signal.ECKeyPair key_pair = Plugin.get_context().generate_key_pair();
-                store.identity_key_store.identity_key_private = key_pair.private.serialize();
-                store.identity_key_store.identity_key_public = key_pair.public.serialize();
+                store.identity_key_store.identity_key_private = new Bytes(key_pair.private.serialize());
+                store.identity_key_store.identity_key_public = new Bytes(key_pair.public.serialize());
 
                 identity_id = (int) db.identity.insert().or("REPLACE")
                         .value(db.identity.account_id, account.id)
                         .value(db.identity.device_id, (int) store.local_registration_id)
-                        .value(db.identity.identity_key_private_base64, Base64.encode(store.identity_key_store.identity_key_private))
-                        .value(db.identity.identity_key_public_base64, Base64.encode(store.identity_key_store.identity_key_public))
+                        .value(db.identity.identity_key_private_base64, Base64.encode(store.identity_key_store.identity_key_private.get_data()))
+                        .value(db.identity.identity_key_public_base64, Base64.encode(store.identity_key_store.identity_key_public.get_data()))
                         .perform();
             } catch (Error e) {
                 // Ignore error
             }
         } else {
             store.identity_key_store.local_registration_id = ((!)row)[db.identity.device_id];
-            store.identity_key_store.identity_key_private = Base64.decode(((!)row)[db.identity.identity_key_private_base64]);
-            store.identity_key_store.identity_key_public = Base64.decode(((!)row)[db.identity.identity_key_public_base64]);
+            store.identity_key_store.identity_key_private = new Bytes(Base64.decode(((!)row)[db.identity.identity_key_private_base64]));
+            store.identity_key_store.identity_key_public = new Bytes(Base64.decode(((!)row)[db.identity.identity_key_public_base64]));
             identity_id = ((!)row)[db.identity.id];
         }
 
diff --git a/plugins/omemo/src/ui/util.vala b/plugins/omemo/src/ui/util.vala
index 88d30b3b..cf61ed82 100644
--- a/plugins/omemo/src/ui/util.vala
+++ b/plugins/omemo/src/ui/util.vala
@@ -1,3 +1,5 @@
+using Xmpp.Util;
+
 namespace Dino.Plugins.Omemo {
 
 public static string fingerprint_from_base64(string b64) {
@@ -19,7 +21,7 @@ public static string fingerprint_markup(string s) {
     for (int i = 0; i < s.length; i += 4) {
         string four_chars = s.substring(i, 4).down();
 
-        int raw = (int) four_chars.to_long(null, 16);
+        int raw = (int) from_hex(four_chars);
         uint8[] bytes = {(uint8) ((raw >> 8) & 0xff - 128), (uint8) (raw & 0xff - 128)};
 
         Checksum checksum = new Checksum(ChecksumType.SHA1);
@@ -57,4 +59,4 @@ public static string fingerprint_markup(string s) {
     return "<span font_family='monospace' font='8'>" + markup + "</span>";
 }
 
-}
\ No newline at end of file
+}