From c1bad1be5d7af242e65ba17b1ca33dae182f6139 Mon Sep 17 00:00:00 2001
From: Patricia Muscalu <patricia@axis.com>
Date: Mon, 25 May 2015 12:33:50 +0200
Subject: [PATCH] curlsink: handle socket callback for active FTP connections
 as well

Since version 7.28.0, libcurl allows application to set
socket options for active FTP connections.

Bump libcurl requirement to version tested.

https://bugzilla.gnome.org/show_bug.cgi?id=749815
---
 configure.ac               |  2 +-
 ext/curl/gstcurlbasesink.c | 35 +++++++++++++++++++++++++++--------
 ext/curl/gstcurlbasesink.h |  1 +
 3 files changed, 29 insertions(+), 9 deletions(-)

diff --git a/configure.ac b/configure.ac
index d295253cf3..55eca0ee0d 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1812,7 +1812,7 @@ AG_GST_CHECK_FEATURE(CHROMAPRINT, [chromaprint], chromaprint, [
 dnl *** Curl ***
 translit(dnm, m, l) AM_CONDITIONAL(USE_CURL, true)
 AG_GST_CHECK_FEATURE(CURL, [Curl plugin], curl, [
-  PKG_CHECK_MODULES(CURL, libcurl >= 7.21.0, [
+  PKG_CHECK_MODULES(CURL, libcurl >= 7.37.1, [
     HAVE_CURL="yes"
     AC_CHECK_HEADERS([unistd.h sys/socket.h sys/types.h netinet/in.h netinet/ip.h netinet/tcp.h fcntl.h], [ ], [
       AC_CHECK_HEADERS([unistd.h sys/types.h winsock2.h ws2tcpip.h fcntl.h], [ ], [HAVE_CURL="no"])
diff --git a/ext/curl/gstcurlbasesink.c b/ext/curl/gstcurlbasesink.c
index 1654c45a57..b47f2467d1 100644
--- a/ext/curl/gstcurlbasesink.c
+++ b/ext/curl/gstcurlbasesink.c
@@ -449,6 +449,8 @@ gst_curl_base_sink_start (GstBaseSink * bsink)
     return FALSE;
   }
 
+  gst_poll_fd_init (&sink->fd);
+
   return TRUE;
 }
 
@@ -972,6 +974,18 @@ handle_transfer (GstCurlBaseSink * sink)
 
   gst_curl_base_sink_got_response_notify (sink);
 
+  GST_OBJECT_LOCK (sink);
+  if (sink->socket_type == CURLSOCKTYPE_ACCEPT) {
+    if (!gst_poll_remove_fd (sink->fdset, &sink->fd)) {
+      sink->error = g_strdup_printf ("failed to remove fd");
+      retval = GST_FLOW_ERROR;
+      GST_OBJECT_UNLOCK (sink);
+      goto fail;
+    }
+    sink->fd.fd = -1;
+  }
+  GST_OBJECT_UNLOCK (sink);
+
   return;
 
 fail:
@@ -1041,7 +1055,7 @@ gst_curl_base_sink_debug_cb (CURL * handle, curl_infotype type, char *data,
  * the connect() call. */
 static int
 gst_curl_base_sink_transfer_socket_cb (void *clientp, curl_socket_t curlfd,
-    curlsocktype G_GNUC_UNUSED purpose)
+    curlsocktype socket_type)
 {
   GstCurlBaseSink *sink;
   gboolean ret = TRUE;
@@ -1058,14 +1072,19 @@ gst_curl_base_sink_transfer_socket_cb (void *clientp, curl_socket_t curlfd,
     return 1;
   }
 
-  gst_poll_fd_init (&sink->fd);
-  sink->fd.fd = curlfd;
-
-  ret &= gst_poll_add_fd (sink->fdset, &sink->fd);
-  ret &= gst_poll_fd_ctl_write (sink->fdset, &sink->fd, TRUE);
-  ret &= gst_poll_fd_ctl_read (sink->fdset, &sink->fd, TRUE);
-  GST_DEBUG_OBJECT (sink, "fd: %d", sink->fd.fd);
   GST_OBJECT_LOCK (sink);
+  sink->socket_type = socket_type;
+
+  if (sink->fd.fd != curlfd) {
+    if (sink->fd.fd > 0 && sink->socket_type != CURLSOCKTYPE_ACCEPT) {
+      ret &= gst_poll_remove_fd (sink->fdset, &sink->fd);
+    }
+    sink->fd.fd = curlfd;
+    ret &= gst_poll_add_fd (sink->fdset, &sink->fd);
+    ret &= gst_poll_fd_ctl_write (sink->fdset, &sink->fd, TRUE);
+    ret &= gst_poll_fd_ctl_read (sink->fdset, &sink->fd, TRUE);
+  }
+  GST_DEBUG_OBJECT (sink, "fd: %d", sink->fd.fd);
   gst_curl_base_sink_setup_dscp_unlocked (sink);
   GST_OBJECT_UNLOCK (sink);
 
diff --git a/ext/curl/gstcurlbasesink.h b/ext/curl/gstcurlbasesink.h
index 51059817bf..afa6d5bad4 100644
--- a/ext/curl/gstcurlbasesink.h
+++ b/ext/curl/gstcurlbasesink.h
@@ -67,6 +67,7 @@ struct _GstCurlBaseSink
   CURL *curl;
   GstPollFD fd;
   GstPoll *fdset;
+  curlsocktype socket_type;
   GThread *transfer_thread;
   gchar *error;
   GstFlowReturn flow_ret;