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gstreamer/ext/curl/gstcurlsink.c
Tim-Philipp Müller eb5b3be384 curlsink: no need for a private instance structure 
The entire instance structure is private anyway.
2011-03-01 10:03:07 +00:00

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/* GStreamer
* Copyright (C) 2011 Axis Communications <dev-gstreamer@axis.com>
*
* 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.
*/
#include <curl/curl.h>
#include <string.h>
#include <stdio.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <unistd.h>
#include <netinet/ip.h>
#include <netinet/tcp.h>
#include <sys/stat.h>
#include <fcntl.h>
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "gstcurlsink.h"
/* Default values */
#define GST_CAT_DEFAULT gst_curl_sink_debug
#define DEFAULT_URL "localhost:5555"
#define DEFAULT_TIMEOUT 30
#define DEFAULT_PROXY_PORT 3128
#define DEFAULT_QOS_DSCP 0
#define DEFAULT_ACCEPT_SELF_SIGNED FALSE
#define DEFAULT_USE_CONTENT_LENGTH FALSE
#define DSCP_MIN 0
#define DSCP_MAX 63
#define RESPONSE_100_CONTINUE 100
#define RESPONSE_CONNECT_PROXY 200
/* 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_sink_debug);
enum
{
PROP_0,
PROP_LOCATION,
PROP_USER_NAME,
PROP_USER_PASSWD,
PROP_PROXY,
PROP_PROXY_PORT,
PROP_PROXY_USER_NAME,
PROP_PROXY_USER_PASSWD,
PROP_FILE_NAME,
PROP_TIMEOUT,
PROP_QOS_DSCP,
PROP_ACCEPT_SELF_SIGNED,
PROP_USE_CONTENT_LENGTH,
PROP_CONTENT_TYPE
};
static gboolean proxy_auth = FALSE;
static gboolean proxy_conn_established = FALSE;
/* Object class function declarations */
static void gst_curl_sink_finalize (GObject * gobject);
static void gst_curl_sink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_curl_sink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
/* BaseSink class function declarations */
static GstFlowReturn gst_curl_sink_render (GstBaseSink * bsink,
GstBuffer * buf);
static gboolean gst_curl_sink_event (GstBaseSink * bsink, GstEvent * event);
static gboolean gst_curl_sink_start (GstBaseSink * bsink);
static gboolean gst_curl_sink_stop (GstBaseSink * bsink);
static gboolean gst_curl_sink_unlock (GstBaseSink * bsink);
static gboolean gst_curl_sink_unlock_stop (GstBaseSink * bsink);
/* private functions */
static gboolean gst_curl_sink_transfer_setup_unlocked (GstCurlSink * sink);
static gboolean gst_curl_sink_transfer_set_options_unlocked (GstCurlSink
* sink);
static gboolean gst_curl_sink_transfer_start_unlocked (GstCurlSink * sink);
static void gst_curl_sink_transfer_cleanup (GstCurlSink * sink);
static size_t gst_curl_sink_transfer_read_cb (void *ptr, size_t size,
size_t nmemb, void *stream);
static size_t gst_curl_sink_transfer_write_cb (void *ptr, size_t size,
size_t nmemb, void *stream);
static GstFlowReturn gst_curl_sink_handle_transfer (GstCurlSink * sink);
static int gst_curl_sink_transfer_socket_cb (void *clientp,
curl_socket_t curlfd, curlsocktype purpose);
static gpointer gst_curl_sink_transfer_thread_func (gpointer data);
static CURLcode gst_curl_sink_transfer_check (GstCurlSink * sink);
static gint gst_curl_sink_setup_dscp_unlocked (GstCurlSink * sink);
static gboolean gst_curl_sink_wait_for_data_unlocked (GstCurlSink * sink);
static void gst_curl_sink_new_file_notify_unlocked (GstCurlSink * sink);
static void gst_curl_sink_transfer_thread_notify_unlocked (GstCurlSink * sink);
static void gst_curl_sink_transfer_thread_close_unlocked (GstCurlSink * sink);
static void gst_curl_sink_wait_for_transfer_thread_to_send_unlocked (GstCurlSink
* sink);
static void gst_curl_sink_data_sent_notify_unlocked (GstCurlSink * sink);
static void
_do_init (GType type)
{
GST_DEBUG_CATEGORY_INIT (gst_curl_sink_debug, "curlsink", 0,
"curl sink element");
}
GST_BOILERPLATE_FULL (GstCurlSink, gst_curl_sink, GstBaseSink,
GST_TYPE_BASE_SINK, _do_init);
static void
gst_curl_sink_base_init (gpointer g_class)
{
GstElementClass *element_class = GST_ELEMENT_CLASS (g_class);
gst_element_class_add_pad_template (element_class,
gst_static_pad_template_get (&sinktemplate));
gst_element_class_set_details_simple (element_class,
"Curl sink",
"Sink/Network",
"Upload data over the network to a server using libcurl",
"Patricia Muscalu <patricia@axis.com>");
}
static void
gst_curl_sink_class_init (GstCurlSinkClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstBaseSinkClass *gstbasesink_class = (GstBaseSinkClass *) klass;
GST_DEBUG_OBJECT (klass, "class_init");
gstbasesink_class->event = GST_DEBUG_FUNCPTR (gst_curl_sink_event);
gstbasesink_class->render = GST_DEBUG_FUNCPTR (gst_curl_sink_render);
gstbasesink_class->start = GST_DEBUG_FUNCPTR (gst_curl_sink_start);
gstbasesink_class->stop = GST_DEBUG_FUNCPTR (gst_curl_sink_stop);
gstbasesink_class->unlock = GST_DEBUG_FUNCPTR (gst_curl_sink_unlock);
gstbasesink_class->unlock_stop =
GST_DEBUG_FUNCPTR (gst_curl_sink_unlock_stop);
gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_curl_sink_finalize);
gobject_class->set_property = gst_curl_sink_set_property;
gobject_class->get_property = gst_curl_sink_get_property;
/* 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_PROXY,
g_param_spec_string ("proxy", "Proxy", "HTTP proxy server URI", NULL,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_PROXY_PORT,
g_param_spec_int ("proxy-port", "Proxy port",
"HTTP proxy server port", 0, G_MAXINT, DEFAULT_PROXY_PORT,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_PROXY_USER_NAME,
g_param_spec_string ("proxy-user", "Proxy user name",
"Proxy user name to use for proxy authentication",
NULL, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_PROXY_USER_PASSWD,
g_param_spec_string ("proxy-passwd", "Proxy user password",
"Proxy user password to use for proxy 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));
g_object_class_install_property (gobject_class, PROP_ACCEPT_SELF_SIGNED,
g_param_spec_boolean ("accept-self-signed",
"Accept self-signed certificates",
"Accept self-signed SSL/TLS certificates",
DEFAULT_ACCEPT_SELF_SIGNED,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_USE_CONTENT_LENGTH,
g_param_spec_boolean ("use-content-length", "Use content length header",
"Use the Content-Length HTTP header instead of "
"Transfer-Encoding header", DEFAULT_USE_CONTENT_LENGTH,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_CONTENT_TYPE,
g_param_spec_string ("content-type", "Content type",
"The mime type of the body of the request", NULL,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
}
static void
gst_curl_sink_init (GstCurlSink * sink, GstCurlSinkClass * klass)
{
sink->transfer_buf = g_malloc (sizeof (TransferBuffer));
sink->transfer_cond = g_malloc (sizeof (TransferCondition));
sink->transfer_cond->cond = g_cond_new ();
sink->transfer_cond->data_sent = FALSE;
sink->transfer_cond->data_available = FALSE;
sink->timeout = DEFAULT_TIMEOUT;
sink->proxy_port = DEFAULT_PROXY_PORT;
sink->qos_dscp = DEFAULT_QOS_DSCP;
sink->url = g_strdup (DEFAULT_URL);
sink->header_list = NULL;
sink->accept_self_signed = DEFAULT_ACCEPT_SELF_SIGNED;
sink->use_content_length = DEFAULT_USE_CONTENT_LENGTH;
sink->transfer_thread_close = FALSE;
sink->new_file = TRUE;
sink->proxy_headers_set = FALSE;
sink->content_type = NULL;
}
static void
gst_curl_sink_finalize (GObject * gobject)
{
GstCurlSink *this = GST_CURL_SINK (gobject);
GST_DEBUG ("finalizing curlsink");
if (this->transfer_thread != NULL) {
g_thread_join (this->transfer_thread);
}
gst_curl_sink_transfer_cleanup (this);
g_cond_free (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->proxy);
g_free (this->proxy_user);
g_free (this->proxy_passwd);
g_free (this->file_name);
g_free (this->content_type);
if (this->header_list) {
curl_slist_free_all (this->header_list);
this->header_list = NULL;
}
if (this->fdset != NULL) {
gst_poll_free (this->fdset);
this->fdset = NULL;
}
G_OBJECT_CLASS (parent_class)->finalize (gobject);
}
static GstFlowReturn
gst_curl_sink_render (GstBaseSink * bsink, GstBuffer * buf)
{
GstCurlSink *sink = GST_CURL_SINK (bsink);
guint8 *data;
size_t size;
GstFlowReturn ret;
GST_LOG ("enter render");
sink = GST_CURL_SINK (bsink);
data = GST_BUFFER_DATA (buf);
size = GST_BUFFER_SIZE (buf);
if (sink->content_type == NULL) {
GstCaps *caps;
GstStructure *structure;
const gchar *mime_type;
caps = buf->caps;
structure = gst_caps_get_structure (caps, 0);
mime_type = gst_structure_get_name (structure);
sink->content_type = g_strdup (mime_type);
}
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_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_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_sink_wait_for_transfer_thread_to_send_unlocked (sink);
done:
ret = sink->flow_ret;
GST_OBJECT_UNLOCK (sink);
GST_LOG ("exit render");
return ret;
}
static gboolean
gst_curl_sink_event (GstBaseSink * bsink, GstEvent * event)
{
GstCurlSink *sink = GST_CURL_SINK (bsink);
switch (event->type) {
case GST_EVENT_EOS:
GST_DEBUG_OBJECT (sink, "received EOS");
GST_OBJECT_LOCK (sink);
gst_curl_sink_transfer_thread_close_unlocked (sink);
GST_OBJECT_UNLOCK (sink);
if (sink->transfer_thread != NULL) {
g_thread_join (sink->transfer_thread);
sink->transfer_thread = NULL;
}
break;
default:
break;
}
return TRUE;
}
static gboolean
gst_curl_sink_start (GstBaseSink * bsink)
{
GstCurlSink *sink;
sink = GST_CURL_SINK (bsink);
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_sink_stop (GstBaseSink * bsink)
{
GstCurlSink *sink = GST_CURL_SINK (bsink);
GST_OBJECT_LOCK (sink);
gst_curl_sink_transfer_thread_close_unlocked (sink);
GST_OBJECT_UNLOCK (sink);
if (sink->fdset != NULL) {
gst_poll_free (sink->fdset);
sink->fdset = NULL;
}
return TRUE;
}
static gboolean
gst_curl_sink_unlock (GstBaseSink * bsink)
{
GstCurlSink *sink;
sink = GST_CURL_SINK (bsink);
GST_LOG_OBJECT (sink, "Flushing");
gst_poll_set_flushing (sink->fdset, TRUE);
return TRUE;
}
static gboolean
gst_curl_sink_unlock_stop (GstBaseSink * bsink)
{
GstCurlSink *sink;
sink = GST_CURL_SINK (bsink);
GST_LOG_OBJECT (sink, "No longer flushing");
gst_poll_set_flushing (sink->fdset, FALSE);
return TRUE;
}
static void
gst_curl_sink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstCurlSink *sink;
GstState cur_state;
g_return_if_fail (GST_IS_CURL_SINK (object));
sink = GST_CURL_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_PROXY:
g_free (sink->proxy);
sink->proxy = g_value_dup_string (value);
GST_DEBUG_OBJECT (sink, "proxy set to %s", sink->proxy);
break;
case PROP_PROXY_PORT:
sink->proxy_port = g_value_get_int (value);
GST_DEBUG_OBJECT (sink, "proxy port set to %d", sink->proxy_port);
break;
case PROP_PROXY_USER_NAME:
g_free (sink->proxy_user);
sink->proxy_user = g_value_dup_string (value);
GST_DEBUG_OBJECT (sink, "proxy user set to %s", sink->proxy_user);
break;
case PROP_PROXY_USER_PASSWD:
g_free (sink->proxy_passwd);
sink->proxy_passwd = g_value_dup_string (value);
GST_DEBUG_OBJECT (sink, "proxy password set to %s", sink->proxy_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_sink_setup_dscp_unlocked (sink);
GST_DEBUG_OBJECT (sink, "dscp set to %d", sink->qos_dscp);
break;
case PROP_ACCEPT_SELF_SIGNED:
sink->accept_self_signed = g_value_get_boolean (value);
GST_DEBUG_OBJECT (sink, "accept_self_signed set to %d",
sink->accept_self_signed);
break;
case PROP_USE_CONTENT_LENGTH:
sink->use_content_length = g_value_get_boolean (value);
GST_DEBUG_OBJECT (sink, "use_content_length set to %d",
sink->use_content_length);
break;
case PROP_CONTENT_TYPE:
g_free (sink->content_type);
sink->content_type = g_value_dup_string (value);
GST_DEBUG_OBJECT (sink, "content type set to %s", sink->content_type);
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_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_sink_setup_dscp_unlocked (sink);
GST_DEBUG_OBJECT (sink, "dscp set to %d", sink->qos_dscp);
break;
case PROP_CONTENT_TYPE:
g_free (sink->content_type);
sink->content_type = g_value_dup_string (value);
GST_DEBUG_OBJECT (sink, "content type set to %s", sink->content_type);
break;
default:
GST_WARNING_OBJECT (sink, "cannot set property when PLAYING");
break;
}
GST_OBJECT_UNLOCK (sink);
}
static void
gst_curl_sink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstCurlSink *sink;
g_return_if_fail (GST_IS_CURL_SINK (object));
sink = GST_CURL_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_PROXY:
g_value_set_string (value, sink->proxy);
break;
case PROP_PROXY_PORT:
g_value_set_int (value, sink->proxy_port);
break;
case PROP_PROXY_USER_NAME:
g_value_set_string (value, sink->proxy_user);
break;
case PROP_PROXY_USER_PASSWD:
g_value_set_string (value, sink->proxy_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;
case PROP_ACCEPT_SELF_SIGNED:
g_value_set_boolean (value, sink->accept_self_signed);
break;
case PROP_USE_CONTENT_LENGTH:
g_value_set_boolean (value, sink->use_content_length);
break;
case PROP_CONTENT_TYPE:
g_value_set_string (value, sink->content_type);
break;
default:
GST_DEBUG_OBJECT (sink, "invalid property id");
break;
}
}
static void
gst_curl_sink_set_http_header_unlocked (GstCurlSink * sink)
{
gchar *tmp;
if (sink->header_list) {
curl_slist_free_all (sink->header_list);
sink->header_list = NULL;
}
if (proxy_auth && !sink->proxy_headers_set && !proxy_conn_established) {
sink->header_list =
curl_slist_append (sink->header_list, "Content-Length: 0");
sink->proxy_headers_set = TRUE;
goto set_headers;
}
if (sink->use_content_length) {
/* if content length is used we assume that every buffer is one
* entire file, which is the case when uploading several jpegs */
tmp = g_strdup_printf ("Content-Length: %d", (int) sink->transfer_buf->len);
sink->header_list = curl_slist_append (sink->header_list, tmp);
g_free (tmp);
} else {
/* when sending a POST request to a HTTP 1.1 server, you can send data
* without knowing the size before starting the POST if you use chunked
* encoding */
sink->header_list = curl_slist_append (sink->header_list,
"Transfer-Encoding: chunked");
}
tmp = g_strdup_printf ("Content-Type: %s", sink->content_type);
sink->header_list = curl_slist_append (sink->header_list, tmp);
g_free (tmp);
set_headers:
tmp = g_strdup_printf ("Content-Disposition: attachment; filename="
"\"%s\"", sink->file_name);
sink->header_list = curl_slist_append (sink->header_list, tmp);
g_free (tmp);
curl_easy_setopt (sink->curl, CURLOPT_HTTPHEADER, sink->header_list);
}
static gboolean
gst_curl_sink_transfer_set_options_unlocked (GstCurlSink * 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);
curl_easy_setopt (sink->curl, CURLOPT_SOCKOPTDATA, sink);
curl_easy_setopt (sink->curl, CURLOPT_SOCKOPTFUNCTION,
gst_curl_sink_transfer_socket_cb);
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);
curl_easy_setopt (sink->curl, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
}
if (sink->accept_self_signed && g_str_has_prefix (sink->url, "https")) {
/* TODO verify the authenticity of the peer's certificate */
curl_easy_setopt (sink->curl, CURLOPT_SSL_VERIFYPEER, 0L);
/* TODO check the servers's claimed identity */
curl_easy_setopt (sink->curl, CURLOPT_SSL_VERIFYHOST, 0L);
}
/* proxy settings */
if (sink->proxy != NULL && strlen (sink->proxy)) {
if (curl_easy_setopt (sink->curl, CURLOPT_PROXY, sink->proxy)
!= CURLE_OK) {
return FALSE;
}
if (curl_easy_setopt (sink->curl, CURLOPT_PROXYPORT, sink->proxy_port)
!= CURLE_OK) {
return FALSE;
}
if (sink->proxy_user != NULL &&
strlen (sink->proxy_user) &&
sink->proxy_passwd != NULL && strlen (sink->proxy_passwd)) {
curl_easy_setopt (sink->curl, CURLOPT_PROXYUSERNAME, sink->proxy_user);
curl_easy_setopt (sink->curl, CURLOPT_PROXYPASSWORD, sink->proxy_passwd);
curl_easy_setopt (sink->curl, CURLOPT_PROXYAUTH, CURLAUTH_ANY);
proxy_auth = TRUE;
}
/* tunnel all operations through a given HTTP proxy */
if (curl_easy_setopt (sink->curl, CURLOPT_HTTPPROXYTUNNEL, 1L)
!= CURLE_OK) {
return FALSE;
}
}
/* POST options */
curl_easy_setopt (sink->curl, CURLOPT_POST, 1L);
curl_easy_setopt (sink->curl, CURLOPT_READFUNCTION,
gst_curl_sink_transfer_read_cb);
curl_easy_setopt (sink->curl, CURLOPT_READDATA, sink);
curl_easy_setopt (sink->curl, CURLOPT_WRITEFUNCTION,
gst_curl_sink_transfer_write_cb);
return TRUE;
}
static size_t
gst_curl_sink_transfer_read_cb (void *curl_ptr, size_t size, size_t nmemb,
void *stream)
{
GstCurlSink *sink;
TransferBuffer *buffer;
size_t max_bytes_to_send;
guint buf_len;
sink = (GstCurlSink *) stream;
/* 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_sink_wait_for_data_unlocked (sink) == FALSE) {
GST_LOG ("returning 0, no more data to send in this file");
GST_OBJECT_UNLOCK (sink);
return 0;
}
GST_OBJECT_UNLOCK (sink);
max_bytes_to_send = size * nmemb;
buffer = sink->transfer_buf;
buf_len = buffer->len;
GST_LOG ("write buf len=%d, offset=%d", buffer->len, buffer->offset);
/* more data in buffer */
if (buffer->len > 0) {
size_t bytes_to_send = MIN (max_bytes_to_send, buf_len);
memcpy ((guint8 *) curl_ptr, buffer->ptr + buffer->offset, bytes_to_send);
buffer->offset = buffer->offset + bytes_to_send;
buffer->len = buffer->len - bytes_to_send;
/* the last data chunk */
if (bytes_to_send == buf_len) {
buffer->ptr = NULL;
buffer->offset = 0;
buffer->len = 0;
GST_OBJECT_LOCK (sink);
gst_curl_sink_data_sent_notify_unlocked (sink);
GST_OBJECT_UNLOCK (sink);
}
GST_LOG ("sent : %d (%x)", bytes_to_send, bytes_to_send);
return bytes_to_send;
} else {
GST_WARNING ("got zero-length buffer");
return 0;
}
}
static size_t
gst_curl_sink_transfer_write_cb (void G_GNUC_UNUSED * ptr, size_t size,
size_t nmemb, void G_GNUC_UNUSED * stream)
{
size_t realsize = size * nmemb;
GST_DEBUG ("response %s", (gchar *) ptr);
return realsize;
}
static CURLcode
gst_curl_sink_transfer_check (GstCurlSink * 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 GstFlowReturn
gst_curl_sink_handle_transfer (GstCurlSink * sink)
{
gint retval;
gint running_handles;
gint timeout;
CURLMcode m_code;
CURLcode e_code;
glong resp = -1;
glong resp_proxy = -1;
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 (!proxy_conn_established && (resp_proxy != RESPONSE_CONNECT_PROXY)
&& proxy_auth) {
curl_easy_getinfo (sink->curl, CURLINFO_HTTP_CONNECTCODE, &resp_proxy);
if ((resp_proxy == RESPONSE_CONNECT_PROXY)) {
GST_LOG ("received HTTP/1.0 200 Connection Established");
/* Workaround: redefine HTTP headers before connecting to HTTP server.
* When talking to proxy, the Content-Length: 0 is send with the request.
*/
curl_multi_remove_handle (sink->multi_handle, sink->curl);
gst_curl_sink_set_http_header_unlocked (sink);
curl_multi_add_handle (sink->multi_handle, sink->curl);
proxy_conn_established = TRUE;
}
}
retval = gst_poll_wait (sink->fdset, timeout * GST_SECOND);
if (G_UNLIKELY (retval == -1)) {
if (errno == EAGAIN || errno == EINTR) {
GST_DEBUG_OBJECT (sink, "interrupted by signal");
} else if (errno == EBUSY) {
goto poll_stopped;
} else {
goto poll_error;
}
} else if (G_UNLIKELY (retval == 0)) {
GST_DEBUG ("timeout");
goto poll_timeout;
}
/* readable/writable sockets */
do {
m_code = curl_multi_perform (sink->multi_handle, &running_handles);
} while (m_code == CURLM_CALL_MULTI_PERFORM);
if (resp != RESPONSE_100_CONTINUE) {
curl_easy_getinfo (sink->curl, CURLINFO_RESPONSE_CODE, &resp);
}
}
if (resp != RESPONSE_100_CONTINUE) {
/* No 100 Continue response received. Using POST with HTTP 1.1 implies
* the use of a "Expect: 100-continue" header. If the server doesn't
* send HTTP/1.1 100 Continue, libcurl will not call transfer_read_cb
* in order to send POST data.
*/
goto no_100_continue_response;
}
if (m_code != CURLM_OK) {
goto curl_multi_error;
}
/* problems still might have occurred on individual transfers even when
* curl_multi_perform returns CURLM_OK */
if ((e_code = gst_curl_sink_transfer_check (sink)) != CURLE_OK) {
goto curl_easy_error;
}
/* check response code */
curl_easy_getinfo (sink->curl, CURLINFO_RESPONSE_CODE, &resp);
GST_DEBUG_OBJECT (sink, "response code: %d", resp);
if (resp < 200 || resp >= 300) {
goto response_error;
}
return GST_FLOW_OK;
poll_error:
{
GST_DEBUG_OBJECT (sink, "poll failed: %s", g_strerror (errno));
GST_ELEMENT_ERROR (sink, RESOURCE, WRITE, ("poll failed"), (NULL));
return GST_FLOW_ERROR;
}
poll_stopped:
{
GST_DEBUG_OBJECT (sink, "poll stopped");
GST_ELEMENT_ERROR (sink, RESOURCE, WRITE, ("poll stopped"), (NULL));
return GST_FLOW_ERROR;
}
poll_timeout:
{
GST_DEBUG_OBJECT (sink, "poll timed out");
GST_ELEMENT_ERROR (sink, RESOURCE, WRITE, ("poll timed out"), (NULL));
return GST_FLOW_ERROR;
}
curl_multi_error:
{
GST_DEBUG_OBJECT (sink, "curl multi error");
GST_ELEMENT_ERROR (sink, RESOURCE, WRITE, (curl_multi_strerror (m_code)),
(NULL));
return GST_FLOW_ERROR;
}
curl_easy_error:
{
GST_DEBUG_OBJECT (sink, "curl easy error");
GST_ELEMENT_ERROR (sink, RESOURCE, WRITE, (curl_easy_strerror (e_code)),
(NULL));
return GST_FLOW_ERROR;
}
no_100_continue_response:
{
GST_DEBUG_OBJECT (sink, "100 continue response missing");
GST_ELEMENT_ERROR (sink, RESOURCE, WRITE, ("100 continue response missing"),
(NULL));
return GST_FLOW_ERROR;
}
response_error:
{
GST_DEBUG_OBJECT (sink, "response error");
GST_ELEMENT_ERROR (sink, RESOURCE, WRITE, ("response error: %ld", resp),
(NULL));
return GST_FLOW_ERROR;
}
}
/* This function gets called by libcurl after the socket() call but before
* the connect() call. */
static int
gst_curl_sink_transfer_socket_cb (void *clientp, curl_socket_t curlfd,
curlsocktype G_GNUC_UNUSED purpose)
{
GstCurlSink *sink;
gboolean ret = TRUE;
sink = (GstCurlSink *) 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_sink_setup_dscp_unlocked (sink);
GST_OBJECT_UNLOCK (sink);
/* success */
if (ret) {
return 0;
} else {
return 1;
}
}
static gboolean
gst_curl_sink_transfer_start_unlocked (GstCurlSink * 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_create ((GThreadFunc) gst_curl_sink_transfer_thread_func, sink,
TRUE, &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_sink_transfer_thread_func (gpointer data)
{
GstCurlSink *sink = (GstCurlSink *) data;
GstFlowReturn ret = GST_FLOW_OK;
gboolean data_available;
GST_LOG ("transfer thread started");
GST_OBJECT_LOCK (sink);
if (!gst_curl_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 file
* name in http header */
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_sink_wait_for_data_unlocked (sink);
if (data_available) {
gst_curl_sink_set_http_header_unlocked (sink);
}
/* stay unlocked while handling the actual transfer */
GST_OBJECT_UNLOCK (sink);
if (data_available) {
curl_multi_add_handle (sink->multi_handle, sink->curl);
/* Start driving the transfer. */
ret = gst_curl_sink_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 */
curl_multi_remove_handle (sink->multi_handle, sink->curl);
}
/* lock again before looping to check the thread closed flag */
GST_OBJECT_LOCK (sink);
/* if we have transfered data, then set the return code */
if (data_available) {
sink->flow_ret = ret;
}
}
done:
/* if there is a flow error, always notify the render function so it
* can return the flow error up along the pipeline */
if (sink->flow_ret != GST_FLOW_OK) {
gst_curl_sink_data_sent_notify_unlocked (sink);
}
GST_OBJECT_UNLOCK (sink);
GST_DEBUG ("exit thread func - transfer thread close flag: %d",
sink->transfer_thread_close);
return NULL;
}
static gboolean
gst_curl_sink_transfer_setup_unlocked (GstCurlSink * 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_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_sink_transfer_cleanup (GstCurlSink * 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_sink_wait_for_data_unlocked (GstCurlSink * 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_sink_transfer_thread_notify_unlocked (GstCurlSink * sink)
{
GST_LOG ("more data to send");
sink->transfer_cond->data_available = TRUE;
sink->transfer_cond->data_sent = FALSE;
g_cond_signal (sink->transfer_cond->cond);
}
static void
gst_curl_sink_new_file_notify_unlocked (GstCurlSink * sink)
{
GST_LOG ("new file name");
sink->new_file = TRUE;
g_cond_signal (sink->transfer_cond->cond);
}
static void
gst_curl_sink_transfer_thread_close_unlocked (GstCurlSink * sink)
{
GST_LOG ("setting transfer thread close flag");
sink->transfer_thread_close = TRUE;
g_cond_signal (sink->transfer_cond->cond);
}
static void
gst_curl_sink_wait_for_transfer_thread_to_send_unlocked (GstCurlSink * 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_sink_data_sent_notify_unlocked (GstCurlSink * sink)
{
GST_LOG ("transfer completed");
sink->transfer_cond->data_available = FALSE;
sink->transfer_cond->data_sent = TRUE;
g_cond_signal (sink->transfer_cond->cond);
}
static gint
gst_curl_sink_setup_dscp_unlocked (GstCurlSink * 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;
}
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