--- /dev/null
+/* GStreamer
+ * Copyright (C) <2005> Edgard Lima <edgard.lima@indt.org.br>
+ *
+ * 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
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "gstneonhttpsrc.h"
+#include <string.h>
+#include <unistd.h>
+
+#define HTTP_DEFAULT_HOST "localhost"
+#define HTTP_DEFAULT_PORT 80
+#define HTTPS_DEFAULT_PORT 443
+
+GST_DEBUG_CATEGORY (neonhttpsrc_debug);
+#define GST_CAT_DEFAULT neonhttpsrc_debug
+
+#define MAX_READ_SIZE (4 * 1024)
+
+
+static GstElementDetails gst_neonhttp_src_details =
+GST_ELEMENT_DETAILS ("NEON HTTP Client source",
+ "Source/Network",
+ "Receive data as a client over the network via HTTP",
+ "Edgard Lima <edgard.lima@indt.org.br>");
+
+static GstStaticPadTemplate srctemplate = GST_STATIC_PAD_TEMPLATE ("src",
+ GST_PAD_SRC,
+ GST_PAD_ALWAYS,
+ GST_STATIC_CAPS_ANY);
+
+
+enum
+{
+ PROP_0,
+ PROP_URI,
+ PROP_PROXY
+};
+
+static void request_dispatch (void *data);
+static void oom_callback ();
+static int accept_response (void *userdata, ne_request * req,
+ const ne_status * st);
+static void block_reader (void *userdata, const char *buf, size_t len);
+static void size_header_handler (void *userdata, const char *value);
+
+static gboolean set_proxy (const char *uri, ne_uri * parsed,
+ gboolean set_default);
+static gboolean set_uri (const char *uri, ne_uri * parsed, gboolean * ishttps,
+ gchar ** uristr, gboolean set_default);
+
+static void gst_neonhttp_src_finalize (GObject * gobject);
+
+static GstFlowReturn gst_neonhttp_src_create (GstPushSrc * psrc,
+ GstBuffer ** outbuf);
+static gboolean gst_neonhttp_src_stop (GstBaseSrc * bsrc);
+static gboolean gst_neonhttp_src_start (GstBaseSrc * bsrc);
+
+static void gst_neonhttp_src_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec);
+static void gst_neonhttp_src_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec);
+
+static void
+gst_neonhttp_src_uri_handler_init (gpointer g_iface, gpointer iface_data);
+
+static void
+_urihandler_init (GType type)
+{
+ static const GInterfaceInfo urihandler_info = {
+ gst_neonhttp_src_uri_handler_init,
+ NULL,
+ NULL
+ };
+
+ g_type_add_interface_static (type, GST_TYPE_URI_HANDLER, &urihandler_info);
+
+ GST_DEBUG_CATEGORY_INIT (neonhttpsrc_debug, "neonhttpsrc", 0,
+ "NEON HTTP src");
+}
+
+GST_BOILERPLATE_FULL (GstNeonhttpSrc, gst_neonhttp_src, GstPushSrc,
+ GST_TYPE_PUSH_SRC, _urihandler_init);
+
+static void
+gst_neonhttp_src_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 (&srctemplate));
+
+ gst_element_class_set_details (element_class, &gst_neonhttp_src_details);
+}
+
+static void
+gst_neonhttp_src_class_init (GstNeonhttpSrcClass * klass)
+{
+ GObjectClass *gobject_class;
+ GstBaseSrcClass *gstbasesrc_class;
+ GstPushSrcClass *gstpush_src_class;
+
+ gobject_class = (GObjectClass *) klass;
+ gstbasesrc_class = (GstBaseSrcClass *) klass;
+ gstpush_src_class = (GstPushSrcClass *) klass;
+
+ gobject_class->set_property = gst_neonhttp_src_set_property;
+ gobject_class->get_property = gst_neonhttp_src_get_property;
+ gobject_class->finalize = gst_neonhttp_src_finalize;
+
+ g_object_class_install_property
+ (G_OBJECT_CLASS (klass), PROP_URI,
+ g_param_spec_string ("uri", "Uri",
+ "The uri. In the form:"
+ "\n\t\t\thttp://a.com/file.txt - default port '80' "
+ "\n\t\t\thttp://a.com:80/file.txt "
+ "\n\t\t\ta.com/file.txt - defualt scheme 'HTTP' "
+ "\n\t\t\thttps://a.com/file.txt - default port '443' "
+ "\n\t\t\thttp:///file.txt - default host '" HTTP_DEFAULT_HOST "'",
+ "", G_PARAM_READWRITE));
+
+
+ g_object_class_install_property
+ (G_OBJECT_CLASS (klass), PROP_PROXY,
+ g_param_spec_string ("proxy", "Proxy",
+ "The proxy. In the form myproxy.mycompany.com:8080. "
+ "\n\t\t\tIf nothing is passed g_getenv(\"http_proxy\") will be used "
+ "\n\t\t\tIf that http_proxy enviroment var isn't define no proxy is used",
+ "", G_PARAM_READWRITE));
+
+ gstbasesrc_class->start = gst_neonhttp_src_start;
+ gstbasesrc_class->stop = gst_neonhttp_src_stop;
+
+ gstpush_src_class->create = gst_neonhttp_src_create;
+
+ GST_DEBUG_CATEGORY_INIT (neonhttpsrc_debug, "neonhttpsrc", 0,
+ "NEON HTTP Client Source");
+}
+
+static void
+gst_neonhttp_src_init (GstNeonhttpSrc * this, GstNeonhttpSrcClass * g_class)
+{
+ this->session = NULL;
+ this->request = NULL;
+
+ memset (&this->uri, 0, sizeof (this->uri));
+ this->uristr = NULL;
+ memset (&this->proxy, 0, sizeof (this->proxy));
+ this->ishttps = FALSE;
+ this->content_size = 0;
+ this->current_size = 0;
+
+ set_uri (NULL, &this->uri, &this->ishttps, &this->uristr, TRUE);
+ set_proxy (NULL, &this->proxy, TRUE);
+
+ this->lock = g_mutex_new ();
+ this->adapter = gst_adapter_new ();
+ this->task = gst_task_create (request_dispatch, this);
+ g_static_rec_mutex_init (&this->tasklock);
+ gst_task_set_lock (this->task, &this->tasklock);
+
+ gst_base_src_set_live (GST_BASE_SRC (this), TRUE);
+
+ GST_OBJECT_FLAG_UNSET (this, GST_NEONHTTP_SRC_OPEN);
+}
+
+static void
+gst_neonhttp_src_finalize (GObject * gobject)
+{
+ GstNeonhttpSrc *this = GST_NEONHTTP_SRC (gobject);
+
+ ne_uri_free (&this->uri);
+ ne_uri_free (&this->proxy);
+
+
+ if (this->request) {
+ ne_request_destroy (this->request);
+ this->request = NULL;
+ }
+
+ if (this->session) {
+ ne_close_connection (this->session);
+ ne_session_destroy (this->session);
+ this->session = NULL;
+ }
+
+ if (this->adapter) {
+ g_object_unref (this->adapter);
+ }
+
+ if (this->lock) {
+ g_mutex_free (this->lock);
+ }
+
+ gst_object_unref (this->task);
+
+ g_static_rec_mutex_free (&this->tasklock);
+
+}
+
+static GstFlowReturn
+gst_neonhttp_src_create (GstPushSrc * psrc, GstBuffer ** outbuf)
+{
+ GstNeonhttpSrc *src;
+ GstFlowReturn ret = GST_FLOW_OK;
+ guint avail;
+
+ src = GST_NEONHTTP_SRC (psrc);
+
+ if (!GST_OBJECT_FLAG_IS_SET (src, GST_NEONHTTP_SRC_OPEN))
+ goto wrong_state;
+
+ GST_LOG_OBJECT (src, "asked for a buffer");
+
+ while (1) {
+ g_mutex_lock (src->lock);
+ if ((avail = gst_adapter_available (src->adapter))) {
+ g_mutex_unlock (src->lock);
+ break;
+ } else if (src->eos) {
+ GstPad *peer;
+
+ g_mutex_unlock (src->lock);
+
+ *outbuf = NULL;
+ GST_DEBUG ("Returning EOS");
+ peer = gst_pad_get_peer (GST_BASE_SRC_PAD (src));
+ if (!gst_pad_send_event (peer, gst_event_new_eos ())) {
+ ret = GST_FLOW_ERROR;
+ }
+ gst_object_unref (peer);
+ goto done;
+ }
+ g_mutex_unlock (src->lock);
+ usleep (250000);
+ }
+
+ g_mutex_lock (src->lock);
+
+ avail = gst_adapter_available (src->adapter);
+ avail = avail > (4 * 1024) ? (4 * 1024) : avail;
+ *outbuf = gst_buffer_new_and_alloc (avail);
+ memcpy (GST_BUFFER_DATA (*outbuf), gst_adapter_peek (src->adapter, avail),
+ avail);
+ gst_adapter_flush (src->adapter, avail);
+
+ g_mutex_unlock (src->lock);
+
+ if (*outbuf) {
+ gst_buffer_set_caps (*outbuf, GST_PAD_CAPS (GST_BASE_SRC_PAD (src)));
+ }
+
+done:
+
+ return ret;
+
+wrong_state:
+ {
+ GST_DEBUG_OBJECT (src, "connection to closed, cannot read data");
+ return GST_FLOW_WRONG_STATE;
+ }
+
+}
+
+gboolean
+set_proxy (const char *uri, ne_uri * parsed, gboolean set_default)
+{
+ ne_uri_free (parsed);
+
+ if (set_default) {
+ const char *str = g_getenv ("http_proxy");
+
+ if (str) {
+ if (0 != ne_uri_parse (str, parsed)) {
+ g_warning ("The proxy set on http_proxy env var isn't well formated");
+ ne_uri_free (parsed);
+ }
+ }
+ return TRUE;
+ }
+
+ if (0 != ne_uri_parse (uri, parsed)) {
+ goto clear;
+ }
+
+
+ if (parsed->scheme) {
+ g_warning ("The proxy schema shouldn't be defined");
+ }
+
+
+ if (parsed->host && !parsed->port) {
+ goto clear;
+ }
+
+ if (!parsed->path || parsed->authinfo) {
+ goto clear;
+ }
+
+ return TRUE;
+
+clear:
+
+ ne_uri_free (parsed);
+
+ return FALSE;
+
+}
+
+gboolean
+set_uri (const char *uri, ne_uri * parsed, gboolean * ishttps, gchar ** uristr,
+ gboolean set_default)
+{
+
+ ne_uri_free (parsed);
+ if (uristr && *uristr) {
+ ne_free (*uristr);
+ *uristr = NULL;
+ }
+
+ if (set_default) {
+ parsed->scheme = g_strdup ("http");
+ parsed->host = g_strdup (HTTP_DEFAULT_HOST);
+ parsed->port = HTTP_DEFAULT_PORT;
+ parsed->path = g_strdup ("/");
+ *ishttps = FALSE;
+ goto done;
+ }
+
+ if (0 != ne_uri_parse (uri, parsed)) {
+ goto clear;
+ }
+
+ if (parsed->scheme == NULL) {
+ parsed->scheme = g_strdup ("http");
+ *ishttps = FALSE;
+ } else {
+ if (0 == strcmp (parsed->scheme, "https"))
+ *ishttps = TRUE;
+ else
+ *ishttps = FALSE;
+ }
+
+ if (parsed->host == NULL) {
+ parsed->host = g_strdup (HTTP_DEFAULT_HOST);
+ }
+
+ if (parsed->port == 0) {
+ if (*ishttps)
+ parsed->port = HTTPS_DEFAULT_PORT;
+ else
+ parsed->port = HTTP_DEFAULT_PORT;
+ }
+
+ if (!parsed->path) {
+ parsed->path = g_strdup ("");
+ } else {
+ char *str = parsed->path;
+
+ parsed->path = ne_path_escape (parsed->path);
+ ne_free (str);
+ }
+
+done:
+
+ if (uristr) {
+ *uristr = ne_uri_unparse (parsed);
+ }
+
+ return TRUE;
+
+clear:
+
+ if (uristr && *uristr) {
+ ne_free (*uristr);
+ *uristr = NULL;
+ }
+ ne_uri_free (parsed);
+
+ return FALSE;
+
+}
+
+static void
+gst_neonhttp_src_set_property (GObject * object, guint prop_id,
+ const GValue * value, GParamSpec * pspec)
+{
+ GstNeonhttpSrc *this = GST_NEONHTTP_SRC (object);
+
+ switch (prop_id) {
+ case PROP_PROXY:
+ {
+
+ if (!g_value_get_string (value)) {
+ g_warning ("proxy property cannot be NULL");
+ goto done;
+ }
+
+ if (!set_proxy (g_value_get_string (value), &this->proxy, FALSE)) {
+ g_warning ("bad formated proxy");
+ goto done;
+ }
+ }
+
+ break;
+ case PROP_URI:
+ {
+ if (!g_value_get_string (value)) {
+ g_warning ("uri property cannot be NULL");
+ goto done;
+ }
+
+ if (!set_uri (g_value_get_string (value), &this->uri, &this->ishttps,
+ &this->uristr, FALSE)) {
+ g_warning ("bad formated uri");
+ goto done;
+ }
+ }
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+
+done:
+
+ return;
+
+}
+
+static void
+gst_neonhttp_src_get_property (GObject * object, guint prop_id,
+ GValue * value, GParamSpec * pspec)
+{
+ GstNeonhttpSrc *neonhttpsrc = GST_NEONHTTP_SRC (object);
+
+ switch (prop_id) {
+ case PROP_PROXY:
+ {
+ char *str;
+
+ if (neonhttpsrc->proxy.host) {
+ str = ne_uri_unparse (&neonhttpsrc->proxy);
+ if (!str)
+ break;
+ g_value_set_string (value, str);
+ ne_free (str);
+ } else {
+ g_value_set_string (value, "");
+ }
+ }
+ break;
+ case PROP_URI:
+ {
+ char *str;
+
+ if (neonhttpsrc->uri.host) {
+ str = ne_uri_unparse (&neonhttpsrc->uri);
+ if (!str)
+ break;
+ g_value_set_string (value, str);
+ ne_free (str);
+ } else {
+ g_value_set_string (value, "");
+ }
+ }
+ break;
+
+ default:
+ G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
+ break;
+ }
+
+}
+
+/* create a socket for connecting to remote server */
+static gboolean
+gst_neonhttp_src_start (GstBaseSrc * bsrc)
+{
+ gboolean ret = TRUE;
+ GstNeonhttpSrc *src = GST_NEONHTTP_SRC (bsrc);
+
+ ne_oom_callback (oom_callback);
+
+ if (0 != ne_sock_init ()) {
+ ret = FALSE;
+ goto done;
+ }
+
+ src->session =
+ ne_session_create (src->uri.scheme, src->uri.host, src->uri.port);
+
+ if (src->proxy.host && src->proxy.port) {
+ ne_session_proxy (src->session, src->proxy.host, src->proxy.port);
+ } else if (src->proxy.host || src->proxy.port) {
+ /* both proxy host and port must be specified or none */
+ ret = FALSE;
+ goto done;
+ }
+
+ src->request = ne_request_create (src->session, "GET", src->uri.path);
+
+ ne_add_response_header_handler (src->request, "Content-Length",
+ size_header_handler, src);
+
+ ne_add_response_body_reader (src->request, accept_response, block_reader,
+ src);
+
+ if (NE_OK != ne_begin_request (src->request)) {
+ ret = FALSE;
+ goto done;
+ }
+
+ src->eos = FALSE;
+ GST_OBJECT_FLAG_SET (src, GST_NEONHTTP_SRC_OPEN);
+ gst_task_start (src->task);
+
+done:
+
+ return ret;
+
+}
+
+/* close the socket and associated resources
+ * unset OPEN flag
+ * used both to recover from errors and go to NULL state */
+static gboolean
+gst_neonhttp_src_stop (GstBaseSrc * bsrc)
+{
+ GstNeonhttpSrc *src;
+
+ src = GST_NEONHTTP_SRC (bsrc);
+
+ GST_OBJECT_FLAG_UNSET (src, GST_NEONHTTP_SRC_OPEN);
+
+ gst_task_stop (src->task);
+ gst_task_join (src->task);
+
+ if (src->request) {
+ ne_request_destroy (src->request);
+ src->request = NULL;
+ }
+
+ if (src->session) {
+ ne_close_connection (src->session);
+ ne_session_destroy (src->session);
+ src->session = NULL;
+ }
+
+ return TRUE;
+}
+
+void
+request_dispatch (void *data)
+{
+
+ int ret;
+
+ GstNeonhttpSrc *src;
+
+ src = GST_NEONHTTP_SRC (data);
+
+ /* Loop sending the request:
+ * Retry whilst authentication fails and we supply it. */
+
+ do {
+ ssize_t len;
+
+ do {
+ if (!GST_OBJECT_FLAG_IS_SET (src, GST_NEONHTTP_SRC_OPEN)) {
+ return;
+ }
+ len = ne_read_response_block (src->request,
+ src->respbuf, sizeof (src->respbuf));
+ } while (len > 0);
+
+ if (len < 0) {
+ ret = NE_ERROR;
+ break;
+ }
+
+ ret = ne_end_request (src->request);
+
+ } while (ret == NE_RETRY);
+
+ if (ret != NE_OK) {
+ GST_ERROR ("Request failed. code:%d, desc: %s\n", ret,
+ ne_get_error (src->session));
+ }
+
+ g_mutex_lock (src->lock);
+ src->eos = TRUE;
+ g_mutex_unlock (src->lock);
+ gst_task_stop (src->task);
+
+ return;
+
+}
+
+
+/* entry point to initialize the plug-in
+ * initialize the plug-in itself
+ * register the element factories and pad templates
+ * register the features
+ */
+static gboolean
+plugin_init (GstPlugin * plugin)
+{
+ return gst_element_register (plugin, "neonhttpsrc", GST_RANK_NONE,
+ GST_TYPE_NEONHTTP_SRC);
+}
+
+/* this is the structure that gst-register looks for
+ * so keep the name plugin_desc, or you cannot get your plug-in registered */
+GST_PLUGIN_DEFINE (GST_VERSION_MAJOR,
+ GST_VERSION_MINOR,
+ "neon",
+ "lib neon http client src",
+ plugin_init, VERSION, "LGPL", "GStreamer", "http://gstreamer.net/")
+
+
+/*** GSTURIHANDLER INTERFACE *************************************************/
+ static guint gst_neonhttp_src_uri_get_type (void)
+{
+ return GST_URI_SRC;
+}
+static gchar **
+gst_neonhttp_src_uri_get_protocols (void)
+{
+ static gchar *protocols[] = { "http", "https", NULL };
+
+ return protocols;
+}
+
+static const gchar *
+gst_neonhttp_src_uri_get_uri (GstURIHandler * handler)
+{
+ GstNeonhttpSrc *src = GST_NEONHTTP_SRC (handler);
+
+ return src->uristr;
+}
+
+static gboolean
+gst_neonhttp_src_uri_set_uri (GstURIHandler * handler, const gchar * uri)
+{
+ GstNeonhttpSrc *src = GST_NEONHTTP_SRC (handler);
+
+ return set_uri (uri, &src->uri, &src->ishttps, &src->uristr, FALSE);
+
+}
+
+static void
+gst_neonhttp_src_uri_handler_init (gpointer g_iface, gpointer iface_data)
+{
+ GstURIHandlerInterface *iface = (GstURIHandlerInterface *) g_iface;
+
+ iface->get_type = gst_neonhttp_src_uri_get_type;
+ iface->get_protocols = gst_neonhttp_src_uri_get_protocols;
+ iface->get_uri = gst_neonhttp_src_uri_get_uri;
+ iface->set_uri = gst_neonhttp_src_uri_set_uri;
+}
+
+
+/* NEON CALLBACK */
+
+static void
+oom_callback ()
+{
+ GST_ERROR ("memory exeception in neon\n");
+}
+
+static int
+accept_response (void *userdata, ne_request * req, const ne_status * st)
+{
+ GST_LOG ("ne_accept_response called code = %d phrase %s\n", st->code,
+ st->reason_phrase);
+ return ne_accept_2xx (userdata, req, st);
+}
+
+static void
+block_reader (void *userdata, const char *buf, size_t len)
+{
+
+ if (len) {
+ GstNeonhttpSrc *src = GST_NEONHTTP_SRC (userdata);
+ GstBuffer *buffer = gst_buffer_new_and_alloc (len);
+
+ memcpy (GST_BUFFER_DATA (buffer), buf, len);
+
+ g_mutex_lock (src->lock);
+ gst_adapter_push (src->adapter, buffer);
+ src->current_size += len;
+ g_mutex_unlock (src->lock);
+
+ }
+}
+
+void
+size_header_handler (void *userdata, const char *value)
+{
+ GstNeonhttpSrc *src = GST_NEONHTTP_SRC (userdata);
+
+ g_mutex_lock (src->lock);
+ src->content_size = atoi (value);
+ g_mutex_unlock (src->lock);
+
+}
projects / platform / upstream / gstreamer.git / commitdiff