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cups/SOURCES/0001-httpAddrConnect2-Check...

44 lines
1.8 KiB

diff -up cups-2.2.6/cups/http-addrlist.c.cupsgetjobs-pollhup cups-2.2.6/cups/http-addrlist.c
--- cups-2.2.6/cups/http-addrlist.c.cupsgetjobs-pollhup 2023-12-19 18:25:15.484637450 +0100
+++ cups-2.2.6/cups/http-addrlist.c 2023-12-19 18:28:57.129163387 +0100
@@ -313,6 +313,39 @@ httpAddrConnect2(
{
# ifdef HAVE_POLL
DEBUG_printf(("pfds[%d].revents=%x\n", i, pfds[i].revents));
+
+# ifdef _WIN32
+ if (((WSAGetLastError() == WSAEINPROGRESS) && (pfds[i].revents & POLLIN) && (pfds[i].revents & POLLOUT)) ||
+ ((pfds[i].revents & POLLHUP) && (pfds[i].revents & (POLLIN|POLLOUT))))
+# else
+ if (((errno == EINPROGRESS) && (pfds[i].revents & POLLIN) && (pfds[i].revents & POLLOUT)) ||
+ ((pfds[i].revents & POLLHUP) && (pfds[i].revents & (POLLIN|POLLOUT))))
+# endif /* _WIN32 */
+ {
+ // Some systems generate POLLIN or POLLOUT together with POLLHUP when doing
+ // asynchronous connections. The solution seems to be to use getsockopt to
+ // check the SO_ERROR value and ignore the POLLHUP if there is no error or
+ // the error is EINPROGRESS.
+
+ int sres, /* Return value from getsockopt() - 0, or -1 if error */
+ serr; /* Option SO_ERROR value */
+ socklen_t slen = sizeof(serr); /* Option value size */
+
+ sres = getsockopt(fds[i], SOL_SOCKET, SO_ERROR, &serr, &slen);
+
+ if (sres || serr)
+ {
+ pfds[i].revents |= POLLERR;
+# ifdef DEBUG
+ DEBUG_printf(("1httpAddrConnect2: getsockopt returned: %d with error: %s", sres, strerror(serr)));
+# endif
+ }
+ else if (pfds[i].revents && (pfds[i].revents & POLLHUP) && (pfds[i].revents & (POLLIN | POLLOUT)))
+ {
+ pfds[i].revents &= ~POLLHUP;
+ }
+ }
+
if (pfds[i].revents && !(pfds[i].revents & (POLLERR | POLLHUP)))
# else
if (FD_ISSET(fds[i], &input_set) && !FD_ISSET(fds[i], &error_set))