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[client] main: only copy the needed cursor data instead of everything

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This commit is contained in:
Geoffrey McRae 2022-01-24 06:36:15 +11:00
parent a8ba014b52
commit dc918c55b6
1 changed files with 8 additions and 4 deletions
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12
client/src/main.c
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@ -412,7 +412,11 @@ int main_cursorThread(void * unused)
break; break;
} }
if (cursor && msg.size > cursorSize) KVMFRCursor * tmp = (KVMFRCursor *)msg.mem;
const int neededSize = sizeof(*tmp) +
(msg.udata & CURSOR_FLAG_SHAPE ? tmp->height * tmp->pitch : 0);
if (cursor && neededSize > cursorSize)
{ {
free(cursor); free(cursor);
cursor = NULL; cursor = NULL;
@ -421,17 +425,17 @@ int main_cursorThread(void * unused)
/* copy and release the message ASAP */ /* copy and release the message ASAP */
if (!cursor) if (!cursor)
{ {
cursor = malloc(msg.size); cursor = malloc(neededSize);
if (!cursor) if (!cursor)
{ {
DEBUG_ERROR("failed to allocate %d bytes for cursor", msg.size); DEBUG_ERROR("failed to allocate %d bytes for cursor", neededSize);
g_state.state = APP_STATE_SHUTDOWN; g_state.state = APP_STATE_SHUTDOWN;
break; break;
} }
cursorSize = msg.size; cursorSize = msg.size;
} }
memcpy(cursor, msg.mem, msg.size); memcpy(cursor, msg.mem, neededSize);
lgmpClientMessageDone(g_state.pointerQueue); lgmpClientMessageDone(g_state.pointerQueue);
g_cursor.guest.visible = g_cursor.guest.visible =