/* 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., 51 Franklin St, Fifth Floor, * Boston, MA 02110-1301, 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. * * * Example launch line (upload a JPEG file to an SMTP server) * |[ * 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 * ]| * */ #ifdef HAVE_CONFIG_H #include "config.h" #endif #include #include #include #if HAVE_SYS_SOCKET_H #include #endif #include #include #if HAVE_PWD_H #include #endif #if HAVE_NETINET_IN_H #include #endif #include #if HAVE_NETINET_IP_H #include #endif #if HAVE_NETINET_TCP_H #include #endif #include #include #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, gboolean close_transfer); /* 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 void add_final_boundary_unlocked (GstCurlSmtpSink * sink) { GByteArray *array; gchar *boundary_end; gsize len; gint save, state; gchar *data_out; GST_DEBUG ("adding final boundary"); array = sink->base64_chunk->chunk_array; g_assert (array); /* it will need up to 5 bytes if line-breaking is enabled * additional byte is needed for 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); sink->final_boundary_added = TRUE; } 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); 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) add_final_boundary_unlocked (sink); 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 gboolean gst_curl_smtp_sink_has_buffered_data_unlocked (GstCurlBaseSink * bcsink) { GstCurlSmtpSink *sink = GST_CURL_SMTP_SINK (bcsink); Base64Chunk *chunk; GByteArray *array = NULL; gboolean ret = FALSE; chunk = sink->base64_chunk; if (chunk) { array = chunk->chunk_array; if (array) ret = (array->len == 0 && sink->final_boundary_added) ? FALSE : TRUE; } return ret; } 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_static_metadata (element_class, "Curl smtp sink", "Sink/Network", "Upload data over SMTP protocol using libcurl", "Patricia Muscalu "); 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; gstcurlbasesink_class->has_buffered_data_unlocked = gst_curl_smtp_sink_has_buffered_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->final_boundary_added = 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); } sink->base64_chunk->state = 0; sink->base64_chunk->save = 0; if (G_UNLIKELY (!append_headers)) { 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; } /* Setup header fields (From:/To:/Date: etc) and message body for the e-mail. * This data is supposed to be sent to libcurl just before any media data. * This function is called once for each e-mail: * 1. we are about the send the first attachment * 2. we have sent all the attachments and continue sending new ones within * a new e-mail (transfer options have been reset). */ 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 %z"); 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, gboolean close_transfer) { 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; GST_DEBUG ("live: %d, num attachments: %d, num attachments_left: %d, eos: %d, " "close_transfer: %d, final boundary: %d, array_len: %d", bcsink->is_live, sink->nbr_attachments, sink->nbr_attachments_left, sink->eos, close_transfer, sink->final_boundary_added, array->len); if ((bcsink->is_live && (sink->nbr_attachments_left == sink->nbr_attachments)) || (sink->nbr_attachments == 1) || sink->eos || sink->final_boundary_added) { bcsink->is_live = FALSE; sink->reset_transfer_options = TRUE; sink->final_boundary_added = FALSE; 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 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); } if (close_transfer && !sink->final_boundary_added) add_final_boundary_unlocked (sink); 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 '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; }