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gstreamer/ext/curl/gstcurlsmtpsink.c

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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.
*/
/**
* 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
* an SMTP server.
*
* <refsect2>
* <title>Example launch line (upload a JPEG file to an SMTP server)</title>
* |[
* gst-launch filesrc location=image.jpg ! jpegparse ! curlsmtpsink \
* file-name=image.jpg \
* location=smtp://smtp.gmail.com:507 \
* user=test passwd=test \
* subject=my image \
* mail-from="me@gmail.com" \
* mail-rcpt="you@gmail.com,she@gmail.com" \
* use-ssl=TRUE \
* insecure=TRUE
* ]|
* </refsect2>
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <curl/curl.h>
#include <string.h>
#include <stdio.h>
#include <sys/socket.h>
#include <sys/types.h>
#include <sys/time.h>
#include <pwd.h>
#include <netinet/in.h>
#include <unistd.h>
#include <netinet/ip.h>
#include <netinet/tcp.h>
#include <sys/stat.h>
#include <fcntl.h>
#include "gstcurltlssink.h"
#include "gstcurlsmtpsink.h"
/* Default values */
#define GST_CAT_DEFAULT gst_curl_smtp_sink_debug
#define DEFAULT_USE_SSL FALSE
#define DEFAULT_NBR_ATTACHMENTS 1
/* MIME definitions */
#define MIME_VERSION "MIME-version: 1.0"
#define BOUNDARY_STRING "curlsink-boundary"
#define BOUNDARY_STRING_END "--curlsink-boundary--"
#define MAIL_RCPT_DELIMITER ","
/* Plugin specific settings */
GST_DEBUG_CATEGORY_STATIC (gst_curl_smtp_sink_debug);
enum
{
PROP_0,
PROP_MAIL_RCPT,
PROP_MAIL_FROM,
PROP_SUBJECT,
PROP_MESSAGE_BODY,
PROP_POP_USER_NAME,
PROP_POP_USER_PASSWD,
PROP_POP_LOCATION,
PROP_NBR_ATTACHMENTS,
PROP_CONTENT_TYPE,
PROP_USE_SSL
};
/* Object class function declarations */
static void gst_curl_smtp_sink_finalize (GObject * gobject);
static void gst_curl_smtp_sink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec);
static void gst_curl_smtp_sink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec);
static gboolean gst_curl_smtp_sink_set_payload_headers_unlocked (GstCurlBaseSink
* sink);
static gboolean
gst_curl_smtp_sink_set_transfer_options_unlocked (GstCurlBaseSink * sink);
static void gst_curl_smtp_sink_set_mime_type (GstCurlBaseSink * bcsink,
GstCaps * caps);
static gboolean gst_curl_smtp_sink_prepare_transfer (GstCurlBaseSink * bcsink);
static size_t gst_curl_smtp_sink_transfer_data_buffer (GstCurlBaseSink * sink,
void *curl_ptr, size_t block_size, guint * last_chunk);
static size_t gst_curl_smtp_sink_flush_data_unlocked (GstCurlBaseSink * bcsink,
void *curl_ptr, size_t block_size, gboolean new_file);
/* private functions */
static size_t transfer_payload_headers (GstCurlSmtpSink * sink, void *curl_ptr,
size_t block_size);
#define gst_curl_smtp_sink_parent_class parent_class
G_DEFINE_TYPE (GstCurlSmtpSink, gst_curl_smtp_sink, GST_TYPE_CURL_TLS_SINK);
static void
gst_curl_smtp_sink_notify_transfer_end_unlocked (GstCurlSmtpSink * sink)
{
GST_LOG ("transfer completed: %d", sink->transfer_end);
sink->transfer_end = TRUE;
g_cond_signal (&sink->cond_transfer_end);
}
static void
gst_curl_smtp_sink_wait_for_transfer_end_unlocked (GstCurlSmtpSink * sink)
{
GST_LOG ("waiting for final data do be sent: %d", sink->transfer_end);
while (!sink->transfer_end) {
g_cond_wait (&sink->cond_transfer_end, GST_OBJECT_GET_LOCK (sink));
}
GST_LOG ("final data sent");
}
static gboolean
gst_curl_smtp_sink_event (GstBaseSink * bsink, GstEvent * event)
{
GstCurlBaseSink *bcsink = GST_CURL_BASE_SINK (bsink);
GstCurlSmtpSink *sink = GST_CURL_SMTP_SINK (bsink);
GByteArray *array;
gchar *boundary_end;
switch (event->type) {
case GST_EVENT_EOS:
GST_DEBUG_OBJECT (sink, "received EOS");
gst_curl_base_sink_set_live (bcsink, FALSE);
GST_OBJECT_LOCK (sink);
sink->eos = TRUE;
GST_OBJECT_UNLOCK (sink);
if (sink->base64_chunk != NULL) {
gsize len;
gint save, state;
gchar *data_out;
array = sink->base64_chunk->chunk_array;
g_assert (array);
GST_DEBUG ("adding final boundary");
/* it will need up to 5 bytes if line-breaking is enabled
* additional byte is needed for <CR> as it is not automatically added by glib */
data_out = g_malloc (6);
save = sink->base64_chunk->save;
state = sink->base64_chunk->state;
len = g_base64_encode_close (TRUE, data_out, &state, &save);
/* workaround */
data_out[len - 1] = '\r';
data_out[len] = '\n';
/* +1 for CR */
g_byte_array_append (array, (guint8 *) data_out, (guint) (len + 1));
g_free (data_out);
boundary_end = g_strdup_printf ("\r\n%s\r\n", BOUNDARY_STRING_END);
g_byte_array_append (array, (guint8 *) boundary_end,
strlen (boundary_end));
g_free (boundary_end);
}
gst_curl_base_sink_transfer_thread_notify_unlocked (bcsink);
GST_OBJECT_LOCK (sink);
if (sink->base64_chunk != NULL && bcsink->flow_ret == GST_FLOW_OK) {
gst_curl_smtp_sink_wait_for_transfer_end_unlocked (sink);
}
GST_OBJECT_UNLOCK (sink);
gst_curl_base_sink_transfer_thread_close (bcsink);
break;
default:
break;
}
return GST_BASE_SINK_CLASS (parent_class)->event (bsink, event);
}
static void
gst_curl_smtp_sink_class_init (GstCurlSmtpSinkClass * klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GstBaseSinkClass *gstbasesink_class = (GstBaseSinkClass *) klass;
GstCurlBaseSinkClass *gstcurlbasesink_class = (GstCurlBaseSinkClass *) klass;
GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
GST_DEBUG_CATEGORY_INIT (gst_curl_smtp_sink_debug, "curlsmtpsink", 0,
"curl smtp sink element");
GST_DEBUG_OBJECT (klass, "class_init");
gst_element_class_set_details_simple (element_class,
"Curl smtp sink",
"Sink/Network",
"Upload data over SMTP protocol using libcurl",
"Patricia Muscalu <patricia@axis.com>");
gstcurlbasesink_class->set_protocol_dynamic_options_unlocked =
gst_curl_smtp_sink_set_payload_headers_unlocked;
gstcurlbasesink_class->set_options_unlocked =
gst_curl_smtp_sink_set_transfer_options_unlocked;
gstcurlbasesink_class->set_mime_type = gst_curl_smtp_sink_set_mime_type;
gstcurlbasesink_class->prepare_transfer = gst_curl_smtp_sink_prepare_transfer;
gstcurlbasesink_class->transfer_data_buffer =
gst_curl_smtp_sink_transfer_data_buffer;
gstcurlbasesink_class->flush_data_unlocked =
gst_curl_smtp_sink_flush_data_unlocked;
gstbasesink_class->event = gst_curl_smtp_sink_event;
gobject_class->finalize = GST_DEBUG_FUNCPTR (gst_curl_smtp_sink_finalize);
gobject_class->set_property = gst_curl_smtp_sink_set_property;
gobject_class->get_property = gst_curl_smtp_sink_get_property;
g_object_class_install_property (gobject_class, PROP_MAIL_RCPT,
g_param_spec_string ("mail-rcpt", "Mail recipient",
"Single address that the given mail should get sent to", NULL,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_MAIL_FROM,
g_param_spec_string ("mail-from", "Mail sender",
"Single address that the given mail should get sent from", NULL,
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));
g_object_class_install_property (gobject_class, PROP_SUBJECT,
g_param_spec_string ("subject", "UTF-8 encoded mail subject",
"Mail subject", NULL, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_MESSAGE_BODY,
g_param_spec_string ("message-body", "UTF-8 encoded message body",
"Message body", NULL, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_USE_SSL,
g_param_spec_boolean ("use-ssl", "Use SSL",
"Use SSL/TLS for the connection", DEFAULT_USE_SSL,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_NBR_ATTACHMENTS,
g_param_spec_int ("nbr-attachments", "Number attachments",
"Number attachments to send", G_MININT, G_MAXINT,
DEFAULT_NBR_ATTACHMENTS, G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_POP_USER_NAME,
g_param_spec_string ("pop-user", "User name",
"User name to use for POP server authentication", NULL,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_POP_USER_PASSWD,
g_param_spec_string ("pop-passwd", "User password",
"User password to use for POP server authentication", NULL,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (gobject_class, PROP_POP_LOCATION,
g_param_spec_string ("pop-location", "POP location",
"URL POP used for authentication", NULL,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
}
static void
gst_curl_smtp_sink_init (GstCurlSmtpSink * sink)
{
sink->curl_recipients = NULL;
sink->mail_rcpt = NULL;
sink->mail_from = NULL;
sink->subject = NULL;
sink->message_body = NULL;
sink->payload_headers = NULL;
sink->base64_chunk = NULL;
g_cond_init (&sink->cond_transfer_end);
sink->transfer_end = FALSE;
sink->eos = FALSE;
sink->reset_transfer_options = FALSE;
sink->use_ssl = DEFAULT_USE_SSL;
sink->pop_user = NULL;
sink->pop_passwd = NULL;
sink->pop_location = NULL;
sink->pop_curl = NULL;
}
static void
gst_curl_smtp_sink_finalize (GObject * gobject)
{
GstCurlSmtpSink *this = GST_CURL_SMTP_SINK (gobject);
GST_DEBUG ("finalizing curlsmtpsink");
if (this->curl_recipients != NULL) {
curl_slist_free_all (this->curl_recipients);
}
g_free (this->mail_rcpt);
g_free (this->mail_from);
g_free (this->subject);
g_free (this->message_body);
g_free (this->content_type);
g_cond_clear (&this->cond_transfer_end);
if (this->base64_chunk != NULL) {
if (this->base64_chunk->chunk_array != NULL) {
g_byte_array_free (this->base64_chunk->chunk_array, TRUE);
}
g_free (this->base64_chunk);
}
if (this->payload_headers != NULL) {
g_byte_array_free (this->payload_headers, TRUE);
}
g_free (this->pop_user);
g_free (this->pop_passwd);
if (this->pop_curl != NULL) {
curl_easy_cleanup (this->pop_curl);
this->pop_curl = NULL;
}
g_free (this->pop_location);
G_OBJECT_CLASS (parent_class)->finalize (gobject);
}
static void
gst_curl_smtp_sink_set_property (GObject * object, guint prop_id,
const GValue * value, GParamSpec * pspec)
{
GstCurlSmtpSink *sink;
GstState cur_state;
g_return_if_fail (GST_IS_CURL_SMTP_SINK (object));
sink = GST_CURL_SMTP_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_MAIL_RCPT:
g_free (sink->mail_rcpt);
sink->mail_rcpt = g_value_dup_string (value);
GST_DEBUG_OBJECT (sink, "mail-rcpt set to %s", sink->mail_rcpt);
break;
case PROP_MAIL_FROM:
g_free (sink->mail_from);
sink->mail_from = g_value_dup_string (value);
GST_DEBUG_OBJECT (sink, "mail-from set to %s", sink->mail_from);
break;
case PROP_SUBJECT:
g_free (sink->subject);
sink->subject = g_value_dup_string (value);
GST_DEBUG_OBJECT (sink, "subject set to %s", sink->subject);
break;
case PROP_MESSAGE_BODY:
g_free (sink->message_body);
sink->message_body = g_value_dup_string (value);
GST_DEBUG_OBJECT (sink, "message-body set to %s", sink->message_body);
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;
case PROP_USE_SSL:
sink->use_ssl = g_value_get_boolean (value);
GST_DEBUG_OBJECT (sink, "use-ssl set to %d", sink->use_ssl);
break;
case PROP_NBR_ATTACHMENTS:
sink->nbr_attachments = g_value_get_int (value);
sink->nbr_attachments_left = sink->nbr_attachments;
GST_DEBUG_OBJECT (sink, "nbr-attachments set to %d",
sink->nbr_attachments);
break;
case PROP_POP_USER_NAME:
g_free (sink->pop_user);
sink->pop_user = g_value_dup_string (value);
GST_DEBUG_OBJECT (sink, "pop-user set to %s", sink->pop_user);
break;
case PROP_POP_USER_PASSWD:
g_free (sink->pop_passwd);
sink->pop_passwd = g_value_dup_string (value);
GST_DEBUG_OBJECT (sink, "pop-passwd set to %s", sink->pop_passwd);
break;
case PROP_POP_LOCATION:
g_free (sink->pop_location);
sink->pop_location = g_value_dup_string (value);
GST_DEBUG_OBJECT (sink, "pop-location set to %s", sink->pop_location);
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_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_smtp_sink_get_property (GObject * object, guint prop_id,
GValue * value, GParamSpec * pspec)
{
GstCurlSmtpSink *sink;
g_return_if_fail (GST_IS_CURL_SMTP_SINK (object));
sink = GST_CURL_SMTP_SINK (object);
switch (prop_id) {
case PROP_MAIL_RCPT:
g_value_set_string (value, sink->mail_rcpt);
break;
case PROP_MAIL_FROM:
g_value_set_string (value, sink->mail_from);
break;
case PROP_SUBJECT:
g_value_set_string (value, sink->subject);
break;
case PROP_MESSAGE_BODY:
g_value_set_string (value, sink->message_body);
break;
case PROP_CONTENT_TYPE:
g_value_set_string (value, sink->content_type);
break;
case PROP_USE_SSL:
g_value_set_boolean (value, sink->use_ssl);
break;
case PROP_NBR_ATTACHMENTS:
g_value_set_int (value, sink->nbr_attachments);
break;
case PROP_POP_USER_NAME:
g_value_set_string (value, sink->pop_user);
break;
case PROP_POP_USER_PASSWD:
g_value_set_string (value, sink->pop_passwd);
break;
case PROP_POP_LOCATION:
g_value_set_string (value, sink->pop_location);
break;
default:
GST_DEBUG_OBJECT (sink, "invalid property id");
break;
}
}
static gboolean
gst_curl_smtp_sink_set_payload_headers_unlocked (GstCurlBaseSink * bcsink)
{
GstCurlSmtpSink *sink = GST_CURL_SMTP_SINK (bcsink);
gchar *hdrs;
gboolean append_headers = FALSE;
if (sink->reset_transfer_options) {
g_assert (!bcsink->is_live);
sink->reset_transfer_options = FALSE;
/* all data has been sent in the previous transfer, setup headers for
* a new transfer */
gst_curl_smtp_sink_set_transfer_options_unlocked (bcsink);
append_headers = TRUE;
}
if (sink->payload_headers == NULL) {
sink->payload_headers = g_byte_array_new ();
append_headers = TRUE;
}
if (sink->base64_chunk == NULL) {
g_assert (!bcsink->is_live);
/* we are just about to send the very first attachment in this transfer.
* This is the only place where base64_chunk and its array are allocated.
*/
sink->base64_chunk = g_malloc (sizeof (Base64Chunk));
sink->base64_chunk->chunk_array = g_byte_array_new ();
append_headers = TRUE;
} else {
g_assert (sink->base64_chunk->chunk_array != NULL);
g_assert (sink->base64_chunk->chunk_array->len == 0);
}
sink->base64_chunk->state = 0;
sink->base64_chunk->save = 0;
if (G_UNLIKELY (!append_headers)) {
if (sink->base64_chunk != NULL) {
g_byte_array_free (sink->base64_chunk->chunk_array, TRUE);
sink->base64_chunk->chunk_array = NULL;
g_free (sink->base64_chunk);
sink->base64_chunk = NULL;
}
return FALSE;
}
hdrs = g_strdup_printf ("\r\n\r\n--%s\r\n"
"Content-Type: application/octet-stream; name=\"%s\"\r\n"
/* TODO: support for other encodings */
"Content-Transfer-Encoding: BASE64\r\n"
"Content-Disposition: attachment; filename=\"%s\"\r\n\r\n"
"\r\n", BOUNDARY_STRING, bcsink->file_name, bcsink->file_name);
g_byte_array_append (sink->payload_headers, (guint8 *) hdrs, strlen (hdrs));
g_free (hdrs);
return TRUE;
}
/* MIME encoded-word syntax (RFC 2047):
* =?charset?encoding?encoded text?= */
static gchar *
generate_encoded_word (gchar * str)
{
gchar *encoded_word;
g_assert (str);
if (g_utf8_validate (str, -1, NULL)) {
gchar *base64_str;
base64_str = g_base64_encode ((const guchar *) str, strlen (str));
encoded_word = g_strdup_printf ("=?utf-8?B?%s?=", base64_str);
g_free (base64_str);
} else {
GST_WARNING ("string is not a valid UTF-8 string");
encoded_word = g_strdup (str);
}
/* TODO: 75 character limit */
return encoded_word;
}
static gboolean
gst_curl_smtp_sink_set_transfer_options_unlocked (GstCurlBaseSink * bcsink)
{
GstCurlSmtpSink *sink = GST_CURL_SMTP_SINK (bcsink);
GstCurlTlsSinkClass *parent_class;
gchar *request_headers;
GDateTime *date;
gchar *date_str;
gchar **tmp_list = NULL;
gchar *subject_header = NULL;
gchar *message_body = NULL;
gchar *rcpt_header = NULL;
gchar *enc_rcpt;
gchar *from_header = NULL;
gchar *enc_from;
gint i;
g_assert (sink->payload_headers == NULL);
g_assert (sink->mail_rcpt != NULL);
g_assert (sink->mail_from != NULL);
/* time */
date = g_date_time_new_now_local ();
date_str = g_date_time_format (date, "%a %b %e %H:%M:%S %Y");
g_date_time_unref (date);
/* recipient, sender and subject are all UTF-8 strings, which are additionally
* base64-encoded */
/* recipient */
enc_rcpt = generate_encoded_word (sink->mail_rcpt);
rcpt_header = g_strdup_printf ("%s <%s>", enc_rcpt, sink->mail_rcpt);
g_free (enc_rcpt);
/* sender */
enc_from = generate_encoded_word (sink->mail_from);
from_header = g_strdup_printf ("%s <%s>", enc_from, sink->mail_from);
g_free (enc_from);
/* subject */
if (sink->subject != NULL) {
subject_header = generate_encoded_word (sink->subject);
}
/* message */
if (sink->message_body != NULL) {
message_body = g_base64_encode ((const guchar *) sink->message_body,
strlen (sink->message_body));
}
request_headers = g_strdup_printf (
/* headers */
"To: %s\r\n"
"From: %s\r\n"
"Subject: %s\r\n"
"Date: %s\r\n"
MIME_VERSION "\r\n"
"Content-Type: multipart/mixed; boundary=%s\r\n" "\r\n"
/* body headers */
"--" BOUNDARY_STRING "\r\n"
"Content-Type: text/plain; charset=utf-8\r\n"
"Content-Transfer-Encoding: BASE64\r\n"
/* message body */
"\r\n%s\r\n",
rcpt_header,
from_header,
subject_header ? subject_header : "",
date_str, BOUNDARY_STRING, message_body ? message_body : "");
sink->payload_headers = g_byte_array_new ();
g_byte_array_append (sink->payload_headers, (guint8 *) request_headers,
strlen (request_headers));
g_free (date_str);
g_free (subject_header);
g_free (message_body);
g_free (rcpt_header);
g_free (from_header);
g_free (request_headers);
curl_easy_setopt (bcsink->curl, CURLOPT_MAIL_FROM, sink->mail_from);
if (sink->curl_recipients != NULL) {
curl_slist_free_all (sink->curl_recipients);
sink->curl_recipients = NULL;
}
tmp_list = g_strsplit_set (sink->mail_rcpt, MAIL_RCPT_DELIMITER, -1);
for (i = 0; i < g_strv_length (tmp_list); i++) {
sink->curl_recipients = curl_slist_append (sink->curl_recipients,
tmp_list[i]);
}
g_strfreev (tmp_list);
/* note that the CURLOPT_MAIL_RCPT takes a list, not a char array */
curl_easy_setopt (bcsink->curl, CURLOPT_MAIL_RCPT, sink->curl_recipients);
parent_class = GST_CURL_TLS_SINK_GET_CLASS (sink);
if (sink->use_ssl) {
return parent_class->set_options_unlocked (bcsink);
}
return TRUE;
}
static void // FIXME: exactly the same function as in http sink
gst_curl_smtp_sink_set_mime_type (GstCurlBaseSink * bcsink, GstCaps * caps)
{
GstCurlSmtpSink *sink = GST_CURL_SMTP_SINK (bcsink);
GstStructure *structure;
const gchar *mime_type;
if (sink->content_type != NULL) {
return;
}
structure = gst_caps_get_structure (caps, 0);
mime_type = gst_structure_get_name (structure);
sink->content_type = g_strdup (mime_type);
}
static size_t
gst_curl_smtp_sink_flush_data_unlocked (GstCurlBaseSink * bcsink,
void *curl_ptr, size_t block_size, gboolean new_file)
{
GstCurlSmtpSink *sink = GST_CURL_SMTP_SINK (bcsink);
Base64Chunk *chunk = sink->base64_chunk;
gint state = chunk->state;
gint save = chunk->save;
GByteArray *array = chunk->chunk_array;
size_t bytes_to_send;
gint len;
gchar *data_out;
if ((bcsink->is_live && (sink->nbr_attachments_left == sink->nbr_attachments))
|| (sink->nbr_attachments == 1) || sink->eos) {
bcsink->is_live = FALSE;
sink->reset_transfer_options = TRUE;
GST_DEBUG ("returning 0, no more data to send in this transfer");
return 0;
}
/* it will need up to 5 bytes if line-breaking is enabled, however an
* additional byte is needed for <CR> as it is not automatically added by glib */
data_out = g_malloc (6);
len = g_base64_encode_close (TRUE, data_out, &state, &save);
chunk->state = state;
chunk->save = save;
/* workaround */
data_out[len - 1] = '\r';
data_out[len] = '\n';
/* +1 for CR */
g_byte_array_append (array, (guint8 *) data_out, (guint) (len + 1));
g_free (data_out);
if (new_file) {
sink->nbr_attachments_left--;
bcsink->is_live = TRUE;
if (sink->nbr_attachments_left <= 1) {
sink->nbr_attachments_left = sink->nbr_attachments;
}
/* reset flag */
bcsink->new_file = FALSE;
/* set payload headers for new file */
gst_curl_smtp_sink_set_payload_headers_unlocked (bcsink);
}
bytes_to_send = MIN (block_size, array->len);
memcpy ((guint8 *) curl_ptr, array->data, bytes_to_send);
g_byte_array_remove_range (array, 0, bytes_to_send);
return bytes_to_send;
}
static size_t
transfer_chunk (void *curl_ptr, TransferBuffer * buffer, Base64Chunk * chunk,
size_t block_size, guint * last_chunk)
{
size_t bytes_to_send;
const guchar *data_in = buffer->ptr;
size_t data_in_offset = buffer->offset;
gint state = chunk->state;
gint save = chunk->save;
GByteArray *array = chunk->chunk_array;
gchar *data_out;
bytes_to_send = MIN (block_size, buffer->len);
if (bytes_to_send == 0) {
bytes_to_send = MIN (block_size, array->len);
}
/* base64 encode data */
if (buffer->len > 0) {
gsize len;
gchar *ptr_in;
gchar *ptr_out;
gsize size_out;
gint i;
/* if line-breaking is enabled, at least: ((len / 3 + 1) * 4 + 4) / 72 + 1
* bytes of extra space is required. However, additional <CR>'s are required,
* thus we need ((len / 3 + 2) * 4 + 4) / 72 + 2 extra bytes.
*/
size_out = (bytes_to_send / 3 + 1) * 4 + 4 + bytes_to_send +
((bytes_to_send / 3 + 2) * 4 + 4) / 72 + 2;
data_out = g_malloc (size_out);
len = g_base64_encode_step (data_in + data_in_offset, bytes_to_send, TRUE,
data_out, &state, &save);
chunk->state = state;
chunk->save = save;
/* LF->CRLF filter */
ptr_in = ptr_out = data_out;
for (i = 0; i < len; i++) {
if (*ptr_in == '\n') {
*ptr_in = '\r';
g_byte_array_append (array, (guint8 *) ptr_out, ptr_in - ptr_out);
g_byte_array_append (array, (guint8 *) "\r\n", strlen ("\r\n"));
ptr_out = ptr_in + 1;
}
ptr_in++;
}
if (ptr_in - ptr_out) {
g_byte_array_append (array, (guint8 *) ptr_out, ptr_in - ptr_out);
}
g_free (data_out);
data_out = NULL;
buffer->offset += bytes_to_send;
buffer->len -= bytes_to_send;
bytes_to_send = MIN (block_size, array->len);
memcpy ((guint8 *) curl_ptr, array->data, bytes_to_send);
g_byte_array_remove_range (array, 0, bytes_to_send);
if (array->len == 0) {
*last_chunk = 1;
}
return bytes_to_send;
}
/* at this point all data has been encoded */
memcpy ((guint8 *) curl_ptr, array->data, bytes_to_send);
g_byte_array_remove_range (array, 0, bytes_to_send);
if (array->len == 0) {
*last_chunk = 1;
}
return bytes_to_send;
}
static size_t
gst_curl_smtp_sink_transfer_data_buffer (GstCurlBaseSink * bcsink,
void *curl_ptr, size_t block_size, guint * last_chunk)
{
GstCurlSmtpSink *sink = GST_CURL_SMTP_SINK (bcsink);
size_t bytes_to_send;
if (sink->payload_headers && sink->payload_headers->len) {
return transfer_payload_headers (sink, curl_ptr, block_size);
}
if (sink->base64_chunk != NULL) {
bytes_to_send =
transfer_chunk (curl_ptr, bcsink->transfer_buf, sink->base64_chunk,
block_size, last_chunk);
GST_OBJECT_LOCK (sink);
if (sink->eos) {
gst_curl_smtp_sink_notify_transfer_end_unlocked (sink);
}
GST_OBJECT_UNLOCK (sink);
return bytes_to_send;
}
/* we should never get here */
return 0;
}
static size_t
transfer_payload_headers (GstCurlSmtpSink * sink,
void *curl_ptr, size_t block_size)
{
size_t bytes_to_send;
GByteArray *headers = sink->payload_headers;
bytes_to_send = MIN (block_size, headers->len);
memcpy ((guint8 *) curl_ptr, headers->data, bytes_to_send);
g_byte_array_remove_range (headers, 0, bytes_to_send);
if (headers->len == 0) {
g_byte_array_free (headers, TRUE);
sink->payload_headers = NULL;
}
return bytes_to_send;
}
static gboolean
gst_curl_smtp_sink_prepare_transfer (GstCurlBaseSink * bcsink)
{
GstCurlSmtpSink *sink = GST_CURL_SMTP_SINK (bcsink);
CURLcode res;
gboolean ret = TRUE;
if (sink->pop_location && strlen (sink->pop_location)) {
if ((sink->pop_curl = curl_easy_init ()) == NULL) {
GST_DEBUG_OBJECT (sink, "POP protocol: failed to create handler");
GST_ELEMENT_ERROR (sink, RESOURCE, WRITE,
("POP protocol: failed to create handler"), (NULL));
return FALSE;
}
curl_easy_setopt (sink->pop_curl, CURLOPT_URL, sink->pop_location);
if (sink->pop_user != NULL && strlen (sink->pop_user) &&
sink->pop_passwd != NULL && strlen (sink->pop_passwd)) {
curl_easy_setopt (sink->pop_curl, CURLOPT_USERNAME, sink->pop_user);
curl_easy_setopt (sink->pop_curl, CURLOPT_PASSWORD, sink->pop_passwd);
}
}
if (sink->pop_curl == NULL) {
goto end;
}
/* ready to initialize connection to POP server */
res = curl_easy_perform (sink->pop_curl);
if (res != CURLE_OK) {
GST_DEBUG_OBJECT (sink, "POP transfer failed: %s",
curl_easy_strerror (res));
GST_ELEMENT_ERROR (sink, RESOURCE, WRITE, ("POP transfer failed: %s",
curl_easy_strerror (res)), (NULL));
ret = FALSE;
}
curl_easy_cleanup (sink->pop_curl);
sink->pop_curl = NULL;
end:
return ret;
}
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