[Spice-devel] [spice-gtk v3] file-xfer: Fix bad filename encoding

[Victor Toso]

From: Victor Toso <me at victortoso.com>

Manual for G_FILE_ATTRIBUTE_STANDARD_NAME states:
 > The name is the on-disk filename which may not be in any known
 > encoding, and can thus not be generally displayed as is.

Considering a file named "ěščřžýáíé", if we use
G_FILE_ATTRIBUTE_STANDARD_NAME to get the file name, we will have the
following 72 bytes long string:
"\xc4\x9b\xc5\xa1\xc4\x8d\xc5\x99\xc5\xbe\xc3\xbd\xc3\xa1\xc3\xad\xc3\xa9"

This is a regression introduced at 4647ac9a2a72c98b6841180ccf5f8d

Possible solutions are:
1) Using G_FILE_ATTRIBUTE_STANDARD_DISPLAY_NAME attribute;
2) Using g_file_info_get_attribute_byte_string() function;
3) Using the g_file_get_basename() which was used before 4647ac9a2a72c9

Using option 2 based on better long term solution.
This give us the correct 18 bytes long utf-8 string to "ěščřžýáíé"

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1440206
Signed-off-by: Victor Toso <victortoso at redhat.com>
Acked-by: Christophe Fergeau <cfergeau at redhat.com>
---
 src/channel-main.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/src/channel-main.c b/src/channel-main.c
index be7c852..bbc5905 100644
--- a/src/channel-main.c
+++ b/src/channel-main.c
@@ -2831,7 +2831,8 @@ static void file_xfer_init_task_async_cb(GObject *obj, GAsyncResult *res, gpoint
     GFileInfo *info;
     SpiceFileTransferTask *xfer_task;
     SpiceMainChannel *channel;
-    gchar *string, *basename;
+    gchar *string;
+    const gchar *basename;
     GKeyFile *keyfile;
     VDAgentFileXferStartMessage msg;
     guint64 file_size;
@@ -2846,7 +2847,7 @@ static void file_xfer_init_task_async_cb(GObject *obj, GAsyncResult *res, gpoint
         goto failed;
 
     channel = spice_file_transfer_task_get_channel(xfer_task);
-    basename = g_file_info_get_attribute_as_string(info, G_FILE_ATTRIBUTE_STANDARD_NAME);
+    basename = g_file_info_get_attribute_byte_string(info, G_FILE_ATTRIBUTE_STANDARD_NAME);
     file_size = g_file_info_get_attribute_uint64(info, G_FILE_ATTRIBUTE_STANDARD_SIZE);
 
     xfer_op = data;
@@ -2855,7 +2856,6 @@ static void file_xfer_init_task_async_cb(GObject *obj, GAsyncResult *res, gpoint
     keyfile = g_key_file_new();
     g_key_file_set_string(keyfile, "vdagent-file-xfer", "name", basename);
     g_key_file_set_uint64(keyfile, "vdagent-file-xfer", "size", file_size);
-    g_free(basename);
 
     /* Save keyfile content to memory. TODO: more file attributions
        need to be sent to guest */
-- 
2.12.2