/* GStreamer * Copyright (C) 2011 Axis Communications * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Library General Public * License as published by the Free Software Foundation; either * version 2 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Library General Public License for more details. * * You should have received a copy of the GNU Library General Public * License along with this library; if not, write to the * Free Software Foundation, Inc., 59 Temple Place - Suite 330, * Boston, MA 02111-1307, USA. */ /** * SECTION:element-curlsink * @short_description: sink that uploads data to a server using libcurl * @see_also: * * This is a network sink that uses libcurl as a client to upload data to * a server (e.g. a HTTP/FTP server). * * * Example launch line (upload a JPEG file to an HTTP server) * |[ * gst-launch filesrc location=image.jpg ! jpegparse ! curlsink \ * file-name=image.jpg \ * location=http://192.168.0.1:8080/cgi-bin/patupload.cgi/ \ * user=test passwd=test \ * content-type=image/jpeg \ * use-content-length=false * ]| * */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include #include #include #include #include #include #include #include #include #include #include "gstcurlbasesink.h" /* Default values */ #define GST_CAT_DEFAULT gst_curl_base_sink_debug #define DEFAULT_URL "localhost:5555" #define DEFAULT_TIMEOUT 30 #define DEFAULT_QOS_DSCP 0 #define DSCP_MIN 0 #define DSCP_MAX 63 /* Plugin specific settings */ static GstStaticPadTemplate sinktemplate = GST_STATIC_PAD_TEMPLATE ("sink", GST_PAD_SINK, GST_PAD_ALWAYS, GST_STATIC_CAPS_ANY); GST_DEBUG_CATEGORY_STATIC (gst_curl_base_sink_debug); enum { PROP_0, PROP_LOCATION, PROP_USER_NAME, PROP_USER_PASSWD, PROP_FILE_NAME, PROP_TIMEOUT, PROP_QOS_DSCP }; /* Object class function declarations */ static void gst_curl_base_sink_finalize (GObject * gobject); static void gst_curl_base_sink_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec); static void gst_curl_base_sink_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec); /* BaseSink class function declarations */ static GstFlowReturn gst_curl_base_sink_render (GstBaseSink * bsink, GstBuffer * buf); static gboolean gst_curl_base_sink_event (GstBaseSink * bsink, GstEvent * event); static gboolean gst_curl_base_sink_start (GstBaseSink * bsink); static gboolean gst_curl_base_sink_stop (GstBaseSink * bsink); static gboolean gst_curl_base_sink_unlock (GstBaseSink * bsink); static gboolean gst_curl_base_sink_unlock_stop (GstBaseSink * bsink); /* private functions */ static gboolean gst_curl_base_sink_transfer_setup_unlocked (GstCurlBaseSink * sink); static gboolean gst_curl_base_sink_transfer_start_unlocked (GstCurlBaseSink * sink); static void gst_curl_base_sink_transfer_cleanup (GstCurlBaseSink * sink); static size_t gst_curl_base_sink_transfer_read_cb (void *ptr, size_t size, size_t nmemb, void *stream); static size_t gst_curl_base_sink_transfer_write_cb (void *ptr, size_t size, size_t nmemb, void *stream); static size_t gst_curl_base_sink_transfer_data_buffer (GstCurlBaseSink * sink, void *curl_ptr, size_t block_size, guint * last_chunk); static int gst_curl_base_sink_transfer_socket_cb (void *clientp, curl_socket_t curlfd, curlsocktype purpose); static gpointer gst_curl_base_sink_transfer_thread_func (gpointer data); static gint gst_curl_base_sink_setup_dscp_unlocked (GstCurlBaseSink * sink); static CURLcode gst_curl_base_sink_transfer_check (GstCurlBaseSink * sink); static gboolean gst_curl_base_sink_wait_for_data_unlocked (GstCurlBaseSink * sink); static void gst_curl_base_sink_new_file_notify_unlocked (GstCurlBaseSink * sink); static void gst_curl_base_sink_wait_for_transfer_thread_to_send_unlocked (GstCurlBaseSink * sink); static void gst_curl_base_sink_data_sent_notify (GstCurlBaseSink * sink); static void gst_curl_base_sink_wait_for_response (GstCurlBaseSink * sink); static void gst_curl_base_sink_got_response_notify (GstCurlBaseSink * sink); static void handle_transfer (GstCurlBaseSink * sink); static size_t transfer_data_buffer (void *curl_ptr, TransferBuffer * buf, size_t max_bytes_to_send, guint * last_chunk); #define parent_class gst_curl_base_sink_parent_class G_DEFINE_TYPE (GstCurlBaseSink, gst_curl_base_sink, GST_TYPE_BASE_SINK); static void gst_curl_base_sink_class_init (GstCurlBaseSinkClass * klass) { GObjectClass *gobject_class = G_OBJECT_CLASS (klass); GstBaseSinkClass *gstbasesink_class = (GstBaseSinkClass *) klass; GstElementClass *element_class = GST_ELEMENT_CLASS (klass); GST_DEBUG_CATEGORY_INIT (gst_curl_base_sink_debug, "curlbasesink", 0, "curl base sink element"); GST_DEBUG_OBJECT (klass, "class_init"); gst_element_class_set_metadata (element_class, "Curl base sink", "Sink/Network", "Upload data over the network to a server using libcurl", "Patricia Muscalu "); gstbasesink_class->event = GST_DEBUG_FUNCPTR (gst_curl_base_sink_event); gstbasesink_class->render = GST_DEBUG_FUNCPTR (gst_curl_base_sink_render); gstbasesink_class->start = GST_DEBUG_FUNCPTR (gst_curl_base_sink_start); gstbasesink_class->stop = GST_DEBUG_FUNCPTR (gst_curl_base_sink_stop); gstbasesink_class->unlock = GST_DEBUG_FUNCPTR (gst_curl_base_sink_unlock); gstbasesink_class->unlock_stop = GST_DEBUG_FUNCPTR (gst_curl_base_sink_unlock_stop); gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_curl_base_sink_finalize); gobject_class->set_property = gst_curl_base_sink_set_property; gobject_class->get_property = gst_curl_base_sink_get_property; klass->handle_transfer = handle_transfer; klass->transfer_read_cb = gst_curl_base_sink_transfer_read_cb; klass->transfer_data_buffer = gst_curl_base_sink_transfer_data_buffer; /* FIXME: check against souphttpsrc and use same names for same properties */ g_object_class_install_property (gobject_class, PROP_LOCATION, g_param_spec_string ("location", "Location", "URI location to write to", NULL, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_USER_NAME, g_param_spec_string ("user", "User name", "User name to use for server authentication", NULL, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_USER_PASSWD, g_param_spec_string ("passwd", "User password", "User password to use for server authentication", NULL, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_FILE_NAME, g_param_spec_string ("file-name", "Base file name", "The base file name for the uploaded images", NULL, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_TIMEOUT, g_param_spec_int ("timeout", "Timeout", "Number of seconds waiting to write before timeout", 0, G_MAXINT, DEFAULT_TIMEOUT, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); g_object_class_install_property (gobject_class, PROP_QOS_DSCP, g_param_spec_int ("qos-dscp", "QoS diff srv code point", "Quality of Service, differentiated services code point (0 default)", DSCP_MIN, DSCP_MAX, DEFAULT_QOS_DSCP, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS)); gst_element_class_add_pad_template (element_class, gst_static_pad_template_get (&sinktemplate)); } static void gst_curl_base_sink_init (GstCurlBaseSink * sink) { sink->transfer_buf = g_malloc (sizeof (TransferBuffer)); sink->transfer_cond = g_malloc (sizeof (TransferCondition)); g_cond_init (&sink->transfer_cond->cond); sink->transfer_cond->data_sent = FALSE; sink->transfer_cond->data_available = FALSE; sink->transfer_cond->wait_for_response = FALSE; sink->timeout = DEFAULT_TIMEOUT; sink->qos_dscp = DEFAULT_QOS_DSCP; sink->url = g_strdup (DEFAULT_URL); sink->transfer_thread_close = FALSE; sink->new_file = TRUE; sink->flow_ret = GST_FLOW_OK; sink->is_live = FALSE; } static void gst_curl_base_sink_finalize (GObject * gobject) { GstCurlBaseSink *this = GST_CURL_BASE_SINK (gobject); GST_DEBUG ("finalizing curlsink"); if (this->transfer_thread != NULL) { g_thread_join (this->transfer_thread); } gst_curl_base_sink_transfer_cleanup (this); g_cond_clear (&this->transfer_cond->cond); g_free (this->transfer_cond); g_free (this->transfer_buf); g_free (this->url); g_free (this->user); g_free (this->passwd); g_free (this->file_name); if (this->fdset != NULL) { gst_poll_free (this->fdset); this->fdset = NULL; } G_OBJECT_CLASS (parent_class)->finalize (gobject); } void gst_curl_base_sink_transfer_thread_notify_unlocked (GstCurlBaseSink * sink) { GST_LOG ("more data to send"); sink->transfer_cond->data_available = TRUE; sink->transfer_cond->data_sent = FALSE; sink->transfer_cond->wait_for_response = TRUE; g_cond_signal (&sink->transfer_cond->cond); } void gst_curl_base_sink_transfer_thread_close (GstCurlBaseSink * sink) { GST_OBJECT_LOCK (sink); GST_LOG_OBJECT (sink, "setting transfer thread close flag"); sink->transfer_thread_close = TRUE; g_cond_signal (&sink->transfer_cond->cond); GST_OBJECT_UNLOCK (sink); if (sink->transfer_thread != NULL) { GST_LOG_OBJECT (sink, "waiting for transfer thread to finish"); g_thread_join (sink->transfer_thread); sink->transfer_thread = NULL; } } void gst_curl_base_sink_set_live (GstCurlBaseSink * sink, gboolean live) { g_return_if_fail (GST_IS_CURL_BASE_SINK (sink)); GST_OBJECT_LOCK (sink); sink->is_live = live; GST_OBJECT_UNLOCK (sink); } gboolean gst_curl_base_sink_is_live (GstCurlBaseSink * sink) { gboolean result; g_return_val_if_fail (GST_IS_CURL_BASE_SINK (sink), FALSE); GST_OBJECT_LOCK (sink); result = sink->is_live; GST_OBJECT_UNLOCK (sink); return result; } static GstFlowReturn gst_curl_base_sink_render (GstBaseSink * bsink, GstBuffer * buf) { GstCurlBaseSink *sink = GST_CURL_BASE_SINK (bsink); GstMapInfo map; guint8 *data; size_t size; GstFlowReturn ret; GST_LOG ("enter render"); sink = GST_CURL_BASE_SINK (bsink); gst_buffer_map (buf, &map, GST_MAP_READ); data = map.data; size = map.size; GST_OBJECT_LOCK (sink); /* check if the transfer thread has encountered problems while the * pipeline thread was working elsewhere */ if (sink->flow_ret != GST_FLOW_OK) { goto done; } g_assert (sink->transfer_cond->data_available == FALSE); /* if there is no transfer thread created, lets create one */ if (sink->transfer_thread == NULL) { if (!gst_curl_base_sink_transfer_start_unlocked (sink)) { sink->flow_ret = GST_FLOW_ERROR; goto done; } } /* make data available for the transfer thread and notify */ sink->transfer_buf->ptr = data; sink->transfer_buf->len = size; sink->transfer_buf->offset = 0; gst_curl_base_sink_transfer_thread_notify_unlocked (sink); /* wait for the transfer thread to send the data. This will be notified * either when transfer is completed by the curl read callback or by * the thread function if an error has occured. */ gst_curl_base_sink_wait_for_transfer_thread_to_send_unlocked (sink); done: ret = sink->flow_ret; GST_OBJECT_UNLOCK (sink); gst_buffer_unmap (buf, &map); GST_LOG ("exit render"); return ret; } static gboolean gst_curl_base_sink_event (GstBaseSink * bsink, GstEvent * event) { GstCurlBaseSink *sink = GST_CURL_BASE_SINK (bsink); GstCurlBaseSinkClass *klass = GST_CURL_BASE_SINK_GET_CLASS (sink); switch (event->type) { case GST_EVENT_EOS: GST_DEBUG_OBJECT (sink, "received EOS"); gst_curl_base_sink_transfer_thread_close (sink); gst_curl_base_sink_wait_for_response (sink); break; case GST_EVENT_CAPS: if (klass->set_mime_type) { GstCaps *caps; gst_event_parse_caps (event, &caps); klass->set_mime_type (sink, caps); } break; default: break; } return GST_BASE_SINK_CLASS (parent_class)->event (bsink, event); } static gboolean gst_curl_base_sink_start (GstBaseSink * bsink) { GstCurlBaseSink *sink; sink = GST_CURL_BASE_SINK (bsink); /* reset flags */ sink->transfer_cond->data_sent = FALSE; sink->transfer_cond->data_available = FALSE; sink->transfer_cond->wait_for_response = FALSE; sink->transfer_thread_close = FALSE; sink->new_file = TRUE; sink->flow_ret = GST_FLOW_OK; if ((sink->fdset = gst_poll_new (TRUE)) == NULL) { GST_ELEMENT_ERROR (sink, RESOURCE, OPEN_READ_WRITE, ("gst_poll_new failed: %s", g_strerror (errno)), (NULL)); return FALSE; } return TRUE; } static gboolean gst_curl_base_sink_stop (GstBaseSink * bsink) { GstCurlBaseSink *sink = GST_CURL_BASE_SINK (bsink); gst_curl_base_sink_transfer_thread_close (sink); if (sink->fdset != NULL) { gst_poll_free (sink->fdset); sink->fdset = NULL; } return TRUE; } static gboolean gst_curl_base_sink_unlock (GstBaseSink * bsink) { GstCurlBaseSink *sink; sink = GST_CURL_BASE_SINK (bsink); GST_LOG_OBJECT (sink, "Flushing"); gst_poll_set_flushing (sink->fdset, TRUE); return TRUE; } static gboolean gst_curl_base_sink_unlock_stop (GstBaseSink * bsink) { GstCurlBaseSink *sink; sink = GST_CURL_BASE_SINK (bsink); GST_LOG_OBJECT (sink, "No longer flushing"); gst_poll_set_flushing (sink->fdset, FALSE); return TRUE; } static void gst_curl_base_sink_set_property (GObject * object, guint prop_id, const GValue * value, GParamSpec * pspec) { GstCurlBaseSink *sink; GstState cur_state; g_return_if_fail (GST_IS_CURL_BASE_SINK (object)); sink = GST_CURL_BASE_SINK (object); gst_element_get_state (GST_ELEMENT (sink), &cur_state, NULL, 0); if (cur_state != GST_STATE_PLAYING && cur_state != GST_STATE_PAUSED) { GST_OBJECT_LOCK (sink); switch (prop_id) { case PROP_LOCATION: g_free (sink->url); sink->url = g_value_dup_string (value); GST_DEBUG_OBJECT (sink, "url set to %s", sink->url); break; case PROP_USER_NAME: g_free (sink->user); sink->user = g_value_dup_string (value); GST_DEBUG_OBJECT (sink, "user set to %s", sink->user); break; case PROP_USER_PASSWD: g_free (sink->passwd); sink->passwd = g_value_dup_string (value); GST_DEBUG_OBJECT (sink, "passwd set to %s", sink->passwd); break; case PROP_FILE_NAME: g_free (sink->file_name); sink->file_name = g_value_dup_string (value); GST_DEBUG_OBJECT (sink, "file_name set to %s", sink->file_name); break; case PROP_TIMEOUT: sink->timeout = g_value_get_int (value); GST_DEBUG_OBJECT (sink, "timeout set to %d", sink->timeout); break; case PROP_QOS_DSCP: sink->qos_dscp = g_value_get_int (value); gst_curl_base_sink_setup_dscp_unlocked (sink); GST_DEBUG_OBJECT (sink, "dscp set to %d", sink->qos_dscp); break; default: GST_DEBUG_OBJECT (sink, "invalid property id %d", prop_id); break; } GST_OBJECT_UNLOCK (sink); return; } /* in PLAYING or PAUSED state */ GST_OBJECT_LOCK (sink); switch (prop_id) { case PROP_FILE_NAME: g_free (sink->file_name); sink->file_name = g_value_dup_string (value); GST_DEBUG_OBJECT (sink, "file_name set to %s", sink->file_name); gst_curl_base_sink_new_file_notify_unlocked (sink); break; case PROP_TIMEOUT: sink->timeout = g_value_get_int (value); GST_DEBUG_OBJECT (sink, "timeout set to %d", sink->timeout); break; case PROP_QOS_DSCP: sink->qos_dscp = g_value_get_int (value); gst_curl_base_sink_setup_dscp_unlocked (sink); GST_DEBUG_OBJECT (sink, "dscp set to %d", sink->qos_dscp); break; default: GST_WARNING_OBJECT (sink, "cannot set property when PLAYING"); break; } GST_OBJECT_UNLOCK (sink); } static void gst_curl_base_sink_get_property (GObject * object, guint prop_id, GValue * value, GParamSpec * pspec) { GstCurlBaseSink *sink; g_return_if_fail (GST_IS_CURL_BASE_SINK (object)); sink = GST_CURL_BASE_SINK (object); switch (prop_id) { case PROP_LOCATION: g_value_set_string (value, sink->url); break; case PROP_USER_NAME: g_value_set_string (value, sink->user); break; case PROP_USER_PASSWD: g_value_set_string (value, sink->passwd); break; case PROP_FILE_NAME: g_value_set_string (value, sink->file_name); break; case PROP_TIMEOUT: g_value_set_int (value, sink->timeout); break; case PROP_QOS_DSCP: g_value_set_int (value, sink->qos_dscp); break; default: GST_DEBUG_OBJECT (sink, "invalid property id"); break; } } static gboolean gst_curl_base_sink_transfer_set_common_options_unlocked (GstCurlBaseSink * sink) { GstCurlBaseSinkClass *klass = GST_CURL_BASE_SINK_GET_CLASS (sink); #ifdef DEBUG curl_easy_setopt (sink->curl, CURLOPT_VERBOSE, 1); #endif curl_easy_setopt (sink->curl, CURLOPT_URL, sink->url); curl_easy_setopt (sink->curl, CURLOPT_CONNECTTIMEOUT, sink->timeout); /* using signals in a multithreaded application is dangeous */ curl_easy_setopt (sink->curl, CURLOPT_NOSIGNAL, 1); /* socket settings */ curl_easy_setopt (sink->curl, CURLOPT_SOCKOPTDATA, sink); curl_easy_setopt (sink->curl, CURLOPT_SOCKOPTFUNCTION, gst_curl_base_sink_transfer_socket_cb); curl_easy_setopt (sink->curl, CURLOPT_READFUNCTION, klass->transfer_read_cb); curl_easy_setopt (sink->curl, CURLOPT_READDATA, sink); curl_easy_setopt (sink->curl, CURLOPT_WRITEFUNCTION, gst_curl_base_sink_transfer_write_cb); curl_easy_setopt (sink->curl, CURLOPT_WRITEDATA, sink); return TRUE; } static gboolean gst_curl_base_sink_transfer_set_options_unlocked (GstCurlBaseSink * sink) { gboolean res = FALSE; GstCurlBaseSinkClass *klass = GST_CURL_BASE_SINK_GET_CLASS (sink); gst_curl_base_sink_transfer_set_common_options_unlocked (sink); /* authentication settings */ if (sink->user != NULL && strlen (sink->user)) { curl_easy_setopt (sink->curl, CURLOPT_USERNAME, sink->user); curl_easy_setopt (sink->curl, CURLOPT_PASSWORD, sink->passwd); } if (klass->set_options_unlocked) { res = klass->set_options_unlocked (sink); } return res; } static size_t transfer_data_buffer (void *curl_ptr, TransferBuffer * buf, size_t max_bytes_to_send, guint * last_chunk) { guint buf_len = buf->len; size_t bytes_to_send = MIN (max_bytes_to_send, buf->len); memcpy ((guint8 *) curl_ptr, buf->ptr + buf->offset, bytes_to_send); buf->offset = buf->offset + bytes_to_send; buf->len = buf->len - bytes_to_send; /* the last data chunk */ if (bytes_to_send == buf_len) { buf->offset = 0; buf->len = 0; *last_chunk = 1; } GST_LOG ("sent : %" G_GSIZE_FORMAT, bytes_to_send); return bytes_to_send; } static size_t gst_curl_base_sink_transfer_data_buffer (GstCurlBaseSink * sink, void *curl_ptr, size_t block_size, guint * last_chunk) { TransferBuffer *buffer; size_t bytes_to_send; buffer = sink->transfer_buf; GST_LOG ("write buf len=%" G_GSIZE_FORMAT ", offset=%" G_GSIZE_FORMAT, buffer->len, buffer->offset); if (buffer->len <= 0) { GST_WARNING ("got zero- or negative-length buffer"); return 0; } /* more data in buffer(s) */ bytes_to_send = transfer_data_buffer (curl_ptr, sink->transfer_buf, block_size, last_chunk); return bytes_to_send; } static size_t gst_curl_base_sink_transfer_read_cb (void *curl_ptr, size_t size, size_t nmemb, void *stream) { GstCurlBaseSink *sink; GstCurlBaseSinkClass *klass; size_t max_bytes_to_send; size_t bytes_to_send; guint last_chunk = 0; sink = (GstCurlBaseSink *) stream; klass = GST_CURL_BASE_SINK_GET_CLASS (sink); max_bytes_to_send = size * nmemb; /* wait for data to come available, if new file or thread close is set * then zero will be returned to indicate end of current transfer */ GST_OBJECT_LOCK (sink); if (gst_curl_base_sink_wait_for_data_unlocked (sink) == FALSE) { if (klass->flush_data_unlocked) { bytes_to_send = klass->flush_data_unlocked (sink, curl_ptr, max_bytes_to_send, sink->new_file); GST_OBJECT_UNLOCK (sink); return bytes_to_send; } GST_OBJECT_UNLOCK (sink); GST_LOG ("returning 0, no more data to send in this file"); return 0; } GST_OBJECT_UNLOCK (sink); bytes_to_send = klass->transfer_data_buffer (sink, curl_ptr, max_bytes_to_send, &last_chunk); /* the last data chunk */ if (last_chunk) { gst_curl_base_sink_data_sent_notify (sink); } return bytes_to_send; } static size_t gst_curl_base_sink_transfer_write_cb (void G_GNUC_UNUSED * ptr, size_t size, size_t nmemb, void G_GNUC_UNUSED * stream) { GstCurlBaseSink *sink; GstCurlBaseSinkClass *klass; size_t realsize = size * nmemb; sink = (GstCurlBaseSink *) stream; klass = GST_CURL_BASE_SINK_GET_CLASS (sink); if (klass->transfer_verify_response_code) { if (!klass->transfer_verify_response_code (sink)) { GST_DEBUG_OBJECT (sink, "response error"); GST_OBJECT_LOCK (sink); sink->flow_ret = GST_FLOW_ERROR; GST_OBJECT_UNLOCK (sink); } } GST_DEBUG ("response %s", (gchar *) ptr); return realsize; } CURLcode gst_curl_base_sink_transfer_check (GstCurlBaseSink * sink) { CURLcode code = CURLE_OK; CURL *easy; CURLMsg *msg; gint msgs_left; gchar *eff_url = NULL; do { easy = NULL; while ((msg = curl_multi_info_read (sink->multi_handle, &msgs_left))) { if (msg->msg == CURLMSG_DONE) { easy = msg->easy_handle; code = msg->data.result; break; } } if (easy) { curl_easy_getinfo (easy, CURLINFO_EFFECTIVE_URL, &eff_url); GST_DEBUG ("transfer done %s (%s-%d)\n", eff_url, curl_easy_strerror (code), code); } } while (easy); return code; } static void handle_transfer (GstCurlBaseSink * sink) { GstCurlBaseSinkClass *klass = GST_CURL_BASE_SINK_GET_CLASS (sink); gint retval; gint activated_fds; gint running_handles; gint timeout; CURLMcode m_code; CURLcode e_code; GST_OBJECT_LOCK (sink); timeout = sink->timeout; GST_OBJECT_UNLOCK (sink); /* Receiving CURLM_CALL_MULTI_PERFORM means that libcurl may have more data available to send or receive - call simply curl_multi_perform before poll() on more actions */ do { m_code = curl_multi_perform (sink->multi_handle, &running_handles); } while (m_code == CURLM_CALL_MULTI_PERFORM); while (running_handles && (m_code == CURLM_OK)) { if (klass->transfer_prepare_poll_wait) { klass->transfer_prepare_poll_wait (sink); } activated_fds = gst_poll_wait (sink->fdset, timeout * GST_SECOND); if (G_UNLIKELY (activated_fds == -1)) { if (errno == EAGAIN || errno == EINTR) { GST_DEBUG_OBJECT (sink, "interrupted by signal"); } else if (errno == EBUSY) { GST_DEBUG_OBJECT (sink, "poll stopped"); retval = GST_FLOW_EOS; goto fail; } else { GST_DEBUG_OBJECT (sink, "poll failed: %s", g_strerror (errno)); GST_ELEMENT_ERROR (sink, RESOURCE, WRITE, ("poll failed"), (NULL)); retval = GST_FLOW_ERROR; goto fail; } } else if (G_UNLIKELY (activated_fds == 0)) { GST_DEBUG_OBJECT (sink, "poll timed out"); GST_ELEMENT_ERROR (sink, RESOURCE, WRITE, ("poll timed out"), (NULL)); retval = GST_FLOW_ERROR; goto fail; } /* readable/writable sockets */ do { m_code = curl_multi_perform (sink->multi_handle, &running_handles); } while (m_code == CURLM_CALL_MULTI_PERFORM); } if (m_code != CURLM_OK) { GST_DEBUG_OBJECT (sink, "curl multi error"); GST_ELEMENT_ERROR (sink, RESOURCE, WRITE, ("%s", curl_multi_strerror (m_code)), (NULL)); retval = GST_FLOW_ERROR; goto fail; } /* problems still might have occurred on individual transfers even when * curl_multi_perform returns CURLM_OK */ if ((e_code = gst_curl_base_sink_transfer_check (sink)) != CURLE_OK) { GST_DEBUG_OBJECT (sink, "curl easy error"); GST_ELEMENT_ERROR (sink, RESOURCE, WRITE, ("%s", curl_easy_strerror (e_code)), (NULL)); retval = GST_FLOW_ERROR; goto fail; } gst_curl_base_sink_got_response_notify (sink); return; fail: GST_OBJECT_LOCK (sink); if (sink->flow_ret == GST_FLOW_OK) { sink->flow_ret = retval; } GST_OBJECT_UNLOCK (sink); return; } /* This function gets called by libcurl after the socket() call but before * the connect() call. */ static int gst_curl_base_sink_transfer_socket_cb (void *clientp, curl_socket_t curlfd, curlsocktype G_GNUC_UNUSED purpose) { GstCurlBaseSink *sink; gboolean ret = TRUE; sink = (GstCurlBaseSink *) clientp; g_assert (sink); if (curlfd < 0) { /* signal an unrecoverable error to the library which will close the socket and return CURLE_COULDNT_CONNECT */ return 1; } gst_poll_fd_init (&sink->fd); sink->fd.fd = curlfd; ret = ret && gst_poll_add_fd (sink->fdset, &sink->fd); ret = ret && gst_poll_fd_ctl_write (sink->fdset, &sink->fd, TRUE); ret = ret && gst_poll_fd_ctl_read (sink->fdset, &sink->fd, TRUE); GST_DEBUG ("fd: %d", sink->fd.fd); GST_OBJECT_LOCK (sink); gst_curl_base_sink_setup_dscp_unlocked (sink); GST_OBJECT_UNLOCK (sink); /* success */ if (ret) { return 0; } else { return 1; } } static gboolean gst_curl_base_sink_transfer_start_unlocked (GstCurlBaseSink * sink) { GError *error = NULL; gboolean ret = TRUE; GST_LOG ("creating transfer thread"); sink->transfer_thread_close = FALSE; sink->new_file = TRUE; sink->transfer_thread = g_thread_try_new ("Curl Transfer Thread", (GThreadFunc) gst_curl_base_sink_transfer_thread_func, sink, &error); if (sink->transfer_thread == NULL || error != NULL) { ret = FALSE; if (error) { GST_ERROR_OBJECT (sink, "could not create thread %s", error->message); g_error_free (error); } else { GST_ERROR_OBJECT (sink, "could not create thread for unknown reason"); } } return ret; } static gpointer gst_curl_base_sink_transfer_thread_func (gpointer data) { GstCurlBaseSink *sink = (GstCurlBaseSink *) data; GstCurlBaseSinkClass *klass = GST_CURL_BASE_SINK_GET_CLASS (sink); GstFlowReturn ret; gboolean data_available; GST_LOG ("transfer thread started"); GST_OBJECT_LOCK (sink); if (!gst_curl_base_sink_transfer_setup_unlocked (sink)) { GST_DEBUG_OBJECT (sink, "curl setup error"); GST_ELEMENT_ERROR (sink, RESOURCE, WRITE, ("curl setup error"), (NULL)); sink->flow_ret = GST_FLOW_ERROR; goto done; } while (!sink->transfer_thread_close && sink->flow_ret == GST_FLOW_OK) { /* we are working on a new file, clearing flag and setting a new file * name */ sink->new_file = FALSE; /* wait for data to arrive for this new file, if we get a new file name * again before getting data we will simply skip transfering anything * for this file and go directly to the new file */ data_available = gst_curl_base_sink_wait_for_data_unlocked (sink); if (data_available) { if (G_UNLIKELY (!klass->set_protocol_dynamic_options_unlocked (sink))) { sink->flow_ret = GST_FLOW_ERROR; GST_OBJECT_UNLOCK (sink); GST_ELEMENT_ERROR (sink, RESOURCE, FAILED, ("Unexpected state."), (NULL)); GST_OBJECT_LOCK (sink); goto done; } } /* stay unlocked while handling the actual transfer */ GST_OBJECT_UNLOCK (sink); if (data_available) { if (!gst_curl_base_sink_is_live (sink)) { /* prepare transfer if needed */ if (klass->prepare_transfer) { GST_OBJECT_LOCK (sink); if (!klass->prepare_transfer (sink)) { sink->flow_ret = GST_FLOW_ERROR; goto done; } GST_OBJECT_UNLOCK (sink); } curl_multi_add_handle (sink->multi_handle, sink->curl); } /* Start driving the transfer. */ klass->handle_transfer (sink); /* easy handle will be possibly re-used for next transfer, thus it needs to * be removed from the multi stack and re-added again */ if (!gst_curl_base_sink_is_live (sink)) { curl_multi_remove_handle (sink->multi_handle, sink->curl); } } /* lock again before looping to check the thread closed flag */ GST_OBJECT_LOCK (sink); } if (sink->is_live) { curl_multi_remove_handle (sink->multi_handle, sink->curl); } done: /* extract the error code so the lock does not have to be * taken when calling the functions below that take the lock * on their own */ ret = sink->flow_ret; GST_OBJECT_UNLOCK (sink); /* if there is a flow error, always notify the render function so it * can return the flow error up along the pipeline. as an error has * occurred there is no response to receive, so notify the event function * so it doesn't block indefinitely waiting for a response. */ if (ret != GST_FLOW_OK) { gst_curl_base_sink_data_sent_notify (sink); gst_curl_base_sink_got_response_notify (sink); } GST_DEBUG ("exit thread func - transfer thread close flag: %d", sink->transfer_thread_close); return NULL; } static gboolean gst_curl_base_sink_transfer_setup_unlocked (GstCurlBaseSink * sink) { g_assert (sink); if (sink->curl == NULL) { /* curl_easy_init automatically calls curl_global_init(3) */ if ((sink->curl = curl_easy_init ()) == NULL) { g_warning ("Failed to init easy handle"); return FALSE; } } if (!gst_curl_base_sink_transfer_set_options_unlocked (sink)) { g_warning ("Failed to setup easy handle"); GST_OBJECT_UNLOCK (sink); return FALSE; } /* init a multi stack (non-blocking interface to liburl) */ if (sink->multi_handle == NULL) { if ((sink->multi_handle = curl_multi_init ()) == NULL) { return FALSE; } } return TRUE; } static void gst_curl_base_sink_transfer_cleanup (GstCurlBaseSink * sink) { if (sink->curl != NULL) { if (sink->multi_handle != NULL) { curl_multi_remove_handle (sink->multi_handle, sink->curl); } curl_easy_cleanup (sink->curl); sink->curl = NULL; } if (sink->multi_handle != NULL) { curl_multi_cleanup (sink->multi_handle); sink->multi_handle = NULL; } } static gboolean gst_curl_base_sink_wait_for_data_unlocked (GstCurlBaseSink * sink) { gboolean data_available = FALSE; GST_LOG ("waiting for data"); while (!sink->transfer_cond->data_available && !sink->transfer_thread_close && !sink->new_file) { g_cond_wait (&sink->transfer_cond->cond, GST_OBJECT_GET_LOCK (sink)); } if (sink->transfer_thread_close) { GST_LOG ("wait for data aborted due to thread close"); } else if (sink->new_file) { GST_LOG ("wait for data aborted due to new file name"); } else { GST_LOG ("wait for data completed"); data_available = TRUE; } return data_available; } static void gst_curl_base_sink_new_file_notify_unlocked (GstCurlBaseSink * sink) { GST_LOG ("new file name"); sink->new_file = TRUE; g_cond_signal (&sink->transfer_cond->cond); } static void gst_curl_base_sink_wait_for_transfer_thread_to_send_unlocked (GstCurlBaseSink * sink) { GST_LOG ("waiting for buffer send to complete"); /* this function should not check if the transfer thread is set to be closed * since that flag only can be set by the EoS event (by the pipeline thread). * This can therefore never happen while this function is running since this * function also is called by the pipeline thread (in the render function) */ while (!sink->transfer_cond->data_sent) { g_cond_wait (&sink->transfer_cond->cond, GST_OBJECT_GET_LOCK (sink)); } GST_LOG ("buffer send completed"); } static void gst_curl_base_sink_data_sent_notify (GstCurlBaseSink * sink) { GST_LOG ("transfer completed"); GST_OBJECT_LOCK (sink); sink->transfer_cond->data_available = FALSE; sink->transfer_cond->data_sent = TRUE; g_cond_signal (&sink->transfer_cond->cond); GST_OBJECT_UNLOCK (sink); } static void gst_curl_base_sink_wait_for_response (GstCurlBaseSink * sink) { GST_LOG ("waiting for remote to send response code"); GST_OBJECT_LOCK (sink); while (sink->transfer_cond->wait_for_response) { g_cond_wait (&sink->transfer_cond->cond, GST_OBJECT_GET_LOCK (sink)); } GST_OBJECT_UNLOCK (sink); GST_LOG ("response code received"); } static void gst_curl_base_sink_got_response_notify (GstCurlBaseSink * sink) { GST_LOG ("got response code"); GST_OBJECT_LOCK (sink); sink->transfer_cond->wait_for_response = FALSE; g_cond_signal (&sink->transfer_cond->cond); GST_OBJECT_UNLOCK (sink); } static gint gst_curl_base_sink_setup_dscp_unlocked (GstCurlBaseSink * sink) { gint tos; gint af; gint ret = -1; union { struct sockaddr sa; struct sockaddr_in6 sa_in6; struct sockaddr_storage sa_stor; } sa; socklen_t slen = sizeof (sa); if (getsockname (sink->fd.fd, &sa.sa, &slen) < 0) { GST_DEBUG_OBJECT (sink, "could not get sockname: %s", g_strerror (errno)); return ret; } af = sa.sa.sa_family; /* if this is an IPv4-mapped address then do IPv4 QoS */ if (af == AF_INET6) { GST_DEBUG_OBJECT (sink, "check IP6 socket"); if (IN6_IS_ADDR_V4MAPPED (&(sa.sa_in6.sin6_addr))) { GST_DEBUG_OBJECT (sink, "mapped to IPV4"); af = AF_INET; } } /* extract and shift 6 bits of the DSCP */ tos = (sink->qos_dscp & 0x3f) << 2; switch (af) { case AF_INET: ret = setsockopt (sink->fd.fd, IPPROTO_IP, IP_TOS, &tos, sizeof (tos)); break; case AF_INET6: #ifdef IPV6_TCLASS ret = setsockopt (sink->fd.fd, IPPROTO_IPV6, IPV6_TCLASS, &tos, sizeof (tos)); break; #endif default: GST_ERROR_OBJECT (sink, "unsupported AF"); break; } if (ret) { GST_DEBUG_OBJECT (sink, "could not set DSCP: %s", g_strerror (errno)); } return ret; }