diff --git a/src/xcb.h b/src/xcb.h index 5a1c01a..d24ef95 100644 --- a/src/xcb.h +++ b/src/xcb.h @@ -115,6 +115,23 @@ typedef struct { uint32_t full_sequence; /**< full sequence */ } xcb_generic_event_t; +/** + * @brief GE event + * + * An event as sent by the XGE extension. The length field specifies the + * number of 4-byte blocks trailing the struct. + */ +typedef struct { + uint8_t response_type; /**< Type of the response */ + uint8_t pad0; /**< Padding */ + uint16_t sequence; /**< Sequence number */ + uint32_t length; + uint16_t event_type; + uint16_t pad1; + uint32_t pad[5]; /**< Padding */ + uint32_t full_sequence; /**< full sequence */ +} xcb_ge_event_t; + /** * @brief Generic error. * diff --git a/src/xcb_in.c b/src/xcb_in.c index 2997de4..27ccc99 100644 --- a/src/xcb_in.c +++ b/src/xcb_in.c @@ -39,6 +39,7 @@ #define XCB_ERROR 0 #define XCB_REPLY 1 +#define XCB_XGE_EVENT 35 struct event_list { xcb_generic_event_t *event; @@ -76,7 +77,8 @@ static void wake_up_next_reader(xcb_connection_t *c) static int read_packet(xcb_connection_t *c) { xcb_generic_reply_t genrep; - int length = 32; + int length = 32, + eventlength = 0; /* length after first 32 bytes for GenericEvents */ void *buf; pending_reply *pend = 0; struct event_list *event; @@ -141,17 +143,36 @@ static int read_packet(xcb_connection_t *c) length += genrep.length * 4; } - buf = malloc(length + (genrep.response_type == XCB_REPLY ? 0 : sizeof(uint32_t))); + /* XGE events may have sizes > 32 */ + if (genrep.response_type == XCB_XGE_EVENT) + { + eventlength = ((xcb_ge_event_t*)&genrep)->length * 4; + } + + buf = malloc(length + eventlength + + (genrep.response_type == XCB_REPLY ? 0 : sizeof(uint32_t))); if(!buf) { _xcb_conn_shutdown(c); return 0; } + if(_xcb_in_read_block(c, buf, length) <= 0) { free(buf); return 0; } + + /* pull in XGE event data if available, append after event struct */ + if (eventlength) + { + if(_xcb_in_read_block(c, &((xcb_generic_event_t*)buf)[1], eventlength) <= 0) + { + free(buf); + return 0; + } + } + if(pend && (pend->flags & XCB_REQUEST_DISCARD_REPLY)) { free(buf);