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xwayland: add INCR support for clipboard transfers (#9434)

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add INCR protocol support for large transfers
fix write handling for partial transfers
fix an issue where wayland windows could die from a paste from an
xwayland window
This commit is contained in:
nyx
2025-02-19 10:29:39 -05:00
committed by GitHub
parent 0137a5f6cd
commit 6d25ef09cd
1 changed files with 24 additions and 5 deletions
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29
src/xwayland/XWM.cpp
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@@ -589,9 +589,18 @@ void CXWM::handleSelectionNotify(xcb_selection_notify_event_t* e) {
}
bool CXWM::handleSelectionPropertyNotify(xcb_property_notify_event_t* e) {
// Debug::log(LOG, "[xwm] Selection property notify for {} target {}", e->atom, e->window);
if (e->state != XCB_PROPERTY_DELETE)
return false;
// Debug::log(ERR, "[xwm] FIXME: CXWM::handleSelectionPropertyNotify stub");
auto it = std::ranges::find_if(clipboard.transfers, [e](const auto& t) { return t->incomingWindow == e->window; });
if (it != clipboard.transfers.end()) {
if (!(*it)->getIncomingSelectionProp(true)) {
clipboard.transfers.erase(it);
return false;
}
getTransferData(clipboard);
return true;
}
return false;
}
@@ -1205,8 +1214,10 @@ void CXWM::getTransferData(SXSelection& sel) {
}
if (transfer->propertyReply->type == HYPRATOMS["INCR"]) {
Debug::log(ERR, "[xwm] Transfer is INCR, which we don't support :(");
sel.transfers.erase(it);
transfer->incremental = true;
transfer->propertyStart = 0;
free(transfer->propertyReply);
transfer->propertyReply = nullptr;
return;
}
@@ -1426,6 +1437,8 @@ int SXSelection::onWrite() {
ssize_t len = write(transfer->wlFD.get(), property + transfer->propertyStart, remainder);
if (len == -1) {
if (errno == EAGAIN)
return 1;
Debug::log(ERR, "[xwm] write died in transfer get");
transfers.erase(it);
return 0;
@@ -1436,7 +1449,13 @@ int SXSelection::onWrite() {
Debug::log(LOG, "[xwm] wl client read partially: len {}", len);
} else {
Debug::log(LOG, "[xwm] cb transfer to wl client complete, read {} bytes", len);
transfers.erase(it);
if (!transfer->incremental) {
transfers.erase(it);
} else {
free(transfer->propertyReply);
transfer->propertyReply = nullptr;
transfer->propertyStart = 0;
}
}
return 1;