>
> Previously, if the user attempted to transfer a file that had the same
> name as a file that already exists on the guest, we would just fail the
> transfer. This patch tries to match the behavior of the linux vdagent
> where we try to append an integer onto the name of the new file to make
> it unique. For example, if you tried to transfer 'file.doc' to the guest
> and that file already existed, it would try to create 'file.doc (1)'
> instead. If that also failed, it would attempt 'file.doc (2)', etc, up
> to 63.
>
Not really user friendly, Windows is really extension based.
Would be better to be 'file (1).doc' for 'file.doc'.
Yes, not easy to implement as adding " (xx)".
> Resolves: rhbz#1410181
> ---
> vdagent/file_xfer.cpp | 38 ++++++++++++++++++++++++++++++++------
> 1 file changed, 32 insertions(+), 6 deletions(-)
>
> diff --git a/vdagent/file_xfer.cpp b/vdagent/file_xfer.cpp
> index f763ed3..14e2098 100644
> --- a/vdagent/file_xfer.cpp
> +++ b/vdagent/file_xfer.cpp
> @@ -61,6 +61,7 @@ void FileXfer::handle_start(VDAgentFileXferStartMessage*
> start,
> HANDLE handle;
> AsUser as_user;
> int wlen;
> + int attempt = 0;
>
> status->id = start->id;
> status->result = VD_AGENT_FILE_XFER_STATUS_ERROR;
> @@ -99,15 +100,40 @@ void FileXfer::handle_start(VDAgentFileXferStartMessage*
> start,
>
> file_path[wlen++] = TEXT('\\');
> file_path[wlen] = TEXT('\0');
> - if((wlen = MultiByteToWideChar(CP_UTF8, 0, file_name, -1, file_path +
> wlen, MAX_PATH - wlen)) == 0){
> - vd_printf("failed converting file_name:%s to WideChar", file_name);
> - return;
> +
> + const int MAX_ATTEMPTS = 64; // matches behavior of linux vdagent
> + const size_t POSTFIX_LEN = 6; // up to 2 digits in parentheses and final
> NULL: " (xx)"
> + size_t name_len = strlen(file_name);
> + for (attempt = 0; attempt < MAX_ATTEMPTS; attempt++) {
> + char *pos = &file_name[name_len];
> + if (attempt > 0) {
> + if (name_len + POSTFIX_LEN > MAX_PATH) {
> + vd_printf("failed creating %ls. Postfix makes name too long
> for the buffer.", file_path);
> + return;
> + }
> + snprintf(pos, POSTFIX_LEN, " (%d)", attempt);
> + }
> + if((MultiByteToWideChar(CP_UTF8, 0, file_name, -1, file_path + wlen,
> MAX_PATH - wlen)) == 0){
> + vd_printf("failed converting file_name:%s to WideChar",
> file_name);
> + return;
> + }
> + handle = CreateFile(file_path, GENERIC_WRITE, 0, NULL, CREATE_NEW,
> 0, NULL);
> + if (handle != INVALID_HANDLE_VALUE) {
> + break;
> + }
> +
> + // If the file already exists, we can re-try with a new filename. If
> + // it's a different error, there's not much we can do.
> + if (GetLastError() != ERROR_FILE_EXISTS) {
I would include the old line:
vd_printf("failed creating %ls %lu", file_path, GetLastError());
> + return;
> + }
> }
> - handle = CreateFile(file_path, GENERIC_WRITE, 0, NULL, CREATE_NEW, 0,
> NULL);
> - if (handle == INVALID_HANDLE_VALUE) {
> - vd_printf("failed creating %ls %lu", file_path, GetLastError());
> +
> + if (attempt == MAX_ATTEMPTS) {
> + vd_printf("Failed creating %ls. More than 63 copies exist?",
> file_path);
> return;
> }
> +
> task = new FileXferTask(handle, file_size, file_path);
> _tasks[start->id] = task;
> status->result = VD_AGENT_FILE_XFER_STATUS_CAN_SEND_DATA;
Frediano
_______________________________________________
Spice-devel mailing list
Spice-devel@xxxxxxxxxxxxxxxxxxxxx
https://lists.freedesktop.org/mailman/listinfo/spice-devel