2 This file is part of GNUnet
3 (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Christian Grothoff (and other contributing authors)
5 GNUnet is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published
7 by the Free Software Foundation; either version 2, or (at your
8 option) any later version.
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA.
22 * @file transport/plugin_transport_http.c
23 * @brief http transport service plugin
24 * @author Matthias Wachs
28 #include "gnunet_constants.h"
29 #include "gnunet_protocols.h"
30 #include "gnunet_connection_lib.h"
31 #include "gnunet_server_lib.h"
32 #include "gnunet_service_lib.h"
33 #include "gnunet_statistics_service.h"
34 #include "gnunet_transport_service.h"
35 #include "gnunet_resolver_service.h"
36 #include "gnunet_server_lib.h"
37 #include "gnunet_container_lib.h"
38 #include "plugin_transport.h"
39 #include "gnunet_os_lib.h"
40 #include "microhttpd.h"
41 #include <curl/curl.h>
44 #define DEBUG_CURL GNUNET_YES
45 #define DEBUG_HTTP GNUNET_NO
46 #define HTTP_CONNECT_TIMEOUT_DBG 10
49 * Text of the response sent back after the last bytes of a PUT
50 * request have been received (just to formally obey the HTTP
53 #define HTTP_PUT_RESPONSE "Thank you!"
56 * After how long do we expire an address that we
57 * learned from another peer if it is not reconfirmed
60 #define LEARNED_ADDRESS_EXPIRATION GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_HOURS, 6)
63 * Page returned if request invalid
65 #define HTTP_ERROR_RESPONSE "<!DOCTYPE HTML PUBLIC \"-//IETF//DTD HTML 2.0//EN\"><HTML><HEAD><TITLE>404 Not Found</TITLE></HEAD><BODY><H1>Not Found</H1>The requested URL was not found on this server.<P><HR><ADDRESS></ADDRESS></BODY></HTML>"
68 * Timeout for a http connect
70 #define HTTP_CONNECT_TIMEOUT 30
73 * Network format for IPv4 addresses.
75 struct IPv4HttpAddress
78 * IPv4 address, in network byte order.
83 * Port number, in network byte order.
91 * Network format for IPv6 addresses.
93 struct IPv6HttpAddress
98 struct in6_addr ipv6_addr;
101 * Port number, in network byte order.
107 struct HTTP_inbound_transmission
116 * Message to send using http
121 * next pointer for double linked list
123 struct HTTP_Message * next;
126 * previous pointer for double linked list
128 struct HTTP_Message * prev;
131 * buffer containing data to send
136 * amount of data already sent
148 * Continuation function to call once the transmission buffer
149 * has again space available. NULL if there is no
150 * continuation to call.
152 GNUNET_TRANSPORT_TransmitContinuation transmit_cont;
155 * Closure for transmit_cont.
157 void *transmit_cont_cls;
161 struct HTTP_Connection
163 struct HTTP_Connection * next;
165 struct HTTP_Connection * prev;
170 struct HTTP_Message * pending_msgs_head;
171 struct HTTP_Message * pending_msgs_tail;
174 unsigned int connected;
175 unsigned int send_paused;
178 * curl handle for this ransmission
181 struct Session * session;
185 * Session handle for connections.
193 struct SessionHeader header;
196 * Stored in a linked list.
198 struct Session *next;
201 * Pointer to the global plugin struct.
203 struct Plugin *plugin;
206 * To whom are we talking to (set to our identity
207 * if we are still waiting for the welcome message)
209 struct GNUNET_PeerIdentity identity;
212 * Sender's ip address to distinguish between incoming connections
214 //struct sockaddr_in * addr_inbound;
217 * Sender's ip address to distinguish between incoming connections
228 * Did we initiate the connection (GNUNET_YES) or the other peer (GNUNET_NO)?
233 * At what time did we reset last_received last?
235 struct GNUNET_TIME_Absolute last_quota_update;
238 * How many bytes have we received since the "last_quota_update"
241 uint64_t last_received;
244 * Number of bytes per ms that this peer is allowed
250 * Is there a HTTP/PUT in progress?
252 int is_put_in_progress;
255 * Is the http request invalid?
262 struct GNUNET_CRYPTO_HashAsciiEncoded hash;
265 * Head of dll used to store outbound messages
267 struct HTTP_Message * pending_outbound_msg_head;
270 * Tail of dll used to store outbound messages
272 struct HTTP_Message * pending_outbound_msg_tail;
277 struct HTTP_inbound_transmission pending_inbound_msg;
280 * curl handle for outbound transmissions
285 * Message tokenizer for incoming data
287 struct GNUNET_SERVER_MessageStreamTokenizer * msgtok;
289 struct HTTP_Connection *outbound_addresses_head;
290 struct HTTP_Connection *outbound_addresses_tail;
294 * Encapsulation of all of the state of the plugin.
301 struct GNUNET_TRANSPORT_PluginEnvironment *env;
303 unsigned int port_inbound;
306 * Hashmap for all existing sessions.
308 struct GNUNET_CONTAINER_MultiHashMap *sessions;
311 * Daemon for listening for new IPv4 connections.
313 struct MHD_Daemon *http_server_daemon_v4;
316 * Daemon for listening for new IPv6connections.
318 struct MHD_Daemon *http_server_daemon_v6;
321 * Our primary task for http daemon handling IPv4 connections
323 GNUNET_SCHEDULER_TaskIdentifier http_server_task_v4;
326 * Our primary task for http daemon handling IPv6 connections
328 GNUNET_SCHEDULER_TaskIdentifier http_server_task_v6;
331 * The task sending data
333 GNUNET_SCHEDULER_TaskIdentifier http_server_task_send;
338 CURLM * multi_handle;
341 * Our ASCII encoded, hashed peer identity
342 * This string is used to distinguish between connections and is added to the urls
344 struct GNUNET_CRYPTO_HashAsciiEncoded my_ascii_hash_ident;
348 * Create a new session
350 * @param addr_in address the peer is using inbound
351 * @param addr_out address the peer is using outbound
352 * @param peer identity
353 * @return created session object
355 static struct Session *
356 create_session (void * cls,
361 const struct GNUNET_PeerIdentity *peer)
363 struct Plugin *plugin = cls;
364 struct Session * cs = GNUNET_malloc ( sizeof( struct Session) );
366 GNUNET_assert(cls !=NULL);
369 cs->addr_in = GNUNET_malloc (addrlen_in);
370 cs->addr_in_len = addrlen_in;
371 memcpy(cs->addr_in,addr_in,addrlen_in);
374 if (addrlen_out != 0)
376 cs->addr_out = GNUNET_malloc (addrlen_out);
377 cs->addr_out_len = addrlen_out;
378 memcpy(cs->addr_out,addr_out,addrlen_out);
381 memcpy(&cs->identity, peer, sizeof (struct GNUNET_PeerIdentity));
382 GNUNET_CRYPTO_hash_to_enc(&cs->identity.hashPubKey,&(cs->hash));
383 cs->pending_inbound_msg.bytes_recv = 0;
385 cs->outbound_addresses_head = NULL;
386 cs->outbound_addresses_tail = NULL;
391 * Callback called by MHD when a connection is terminated
393 static void requestCompletedCallback (void *cls, struct MHD_Connection * connection, void **httpSessionCache)
397 cs = *httpSessionCache;
400 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection from peer `%s' was terminated\n",GNUNET_i2s(&cs->identity));
401 /* session set to inactive */
402 cs->is_put_in_progress = GNUNET_NO;
403 cs->is_bad_request = GNUNET_NO;
407 static void messageTokenizerCallback (void *cls,
409 const struct GNUNET_MessageHeader *message)
411 struct Session * cs = cls;
412 GNUNET_assert(cs != NULL);
414 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
415 "Received message with type %u and size %u from `%s'\n",
416 ntohs(message->type),
417 ntohs(message->size),
418 GNUNET_i2s(&(cs->identity)));
419 cs->plugin->env->receive (cs->plugin->env->cls,
427 * Check if ip is allowed to connect.
430 acceptPolicyCallback (void *cls,
431 const struct sockaddr *addr, socklen_t addr_len)
434 struct Plugin *plugin = cls;
436 /* Every connection is accepted, nothing more to do here */
441 * Process GET or PUT request received via MHD. For
442 * GET, queue response that will send back our pending
443 * messages. For PUT, process incoming data and send
444 * to GNUnet core. In either case, check if a session
445 * already exists and create a new one if not.
448 accessHandlerCallback (void *cls,
449 struct MHD_Connection *session,
453 const char *upload_data,
454 size_t * upload_data_size, void **httpSessionCache)
456 struct Plugin *plugin = cls;
457 struct MHD_Response *response;
459 const union MHD_ConnectionInfo * conn_info;
460 struct sockaddr_in *addrin;
461 struct sockaddr_in6 *addrin6;
462 char address[INET6_ADDRSTRLEN+14];
463 struct GNUNET_PeerIdentity pi_in;
465 int send_error_to_client;
466 struct IPv4HttpAddress ipv4addr;
467 struct IPv6HttpAddress ipv6addr;
469 GNUNET_assert(cls !=NULL);
470 send_error_to_client = GNUNET_NO;
471 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"accessHandlerCallback, upload_data_size: %u\n", *upload_data_size);
472 if ( NULL == *httpSessionCache)
474 /* check url for peer identity */
475 res = GNUNET_CRYPTO_hash_from_string ( &url[1], &(pi_in.hashPubKey));
476 if ( GNUNET_SYSERR == res )
478 response = MHD_create_response_from_data (strlen (HTTP_ERROR_RESPONSE),HTTP_ERROR_RESPONSE, MHD_NO, MHD_NO);
479 res = MHD_queue_response (session, MHD_HTTP_NOT_FOUND, response);
480 MHD_destroy_response (response);
482 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Peer has no valid ident, sent HTTP 1.1/404\n");
484 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Peer has no valid ident, could not send error\n");
488 conn_info = MHD_get_connection_info(session, MHD_CONNECTION_INFO_CLIENT_ADDRESS );
489 /* Incoming IPv4 connection */
490 if ( AF_INET == conn_info->client_addr->sin_family)
492 addrin = conn_info->client_addr;
493 inet_ntop(addrin->sin_family, &(addrin->sin_addr),address,INET_ADDRSTRLEN);
494 memcpy(&ipv4addr.ipv4_addr,&(addrin->sin_addr),sizeof(struct in_addr));
495 ipv4addr.u_port = addrin->sin_port;
497 /* Incoming IPv6 connection */
498 if ( AF_INET6 == conn_info->client_addr->sin_family)
500 addrin6 = (struct sockaddr_in6 *) conn_info->client_addr;
501 inet_ntop(addrin6->sin6_family, &(addrin6->sin6_addr),address,INET6_ADDRSTRLEN);
502 memcpy(&ipv6addr.ipv6_addr,&(addrin6->sin6_addr),sizeof(struct in_addr));
503 ipv6addr.u6_port = addrin6->sin6_port;
505 /* find existing session for address */
506 cs = GNUNET_CONTAINER_multihashmap_get (plugin->sessions, &pi_in.hashPubKey);
507 /* no existing session, create a new one*/
510 /* create new session object */
511 if ( AF_INET6 == conn_info->client_addr->sin_family)
512 cs = create_session(plugin, (char *) &ipv6addr, sizeof(struct IPv6HttpAddress),NULL, 0, &pi_in);
513 if ( AF_INET == conn_info->client_addr->sin_family)
514 cs = create_session(plugin, (char *) &ipv4addr, sizeof(struct IPv4HttpAddress),NULL, 0, &pi_in);
516 /* Insert session into hashmap */
517 GNUNET_CONTAINER_multihashmap_put ( plugin->sessions,
518 &cs->identity.hashPubKey,
520 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
522 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"New Session for peer `%s' inserted\n", GNUNET_i2s(&cs->identity));
525 /* Set closure and update current session*/
526 if (*httpSessionCache == NULL)
528 *httpSessionCache = cs;
529 /* Updating session */
531 memcpy(cs->addr_inbound,conn_info->client_addr, sizeof(struct sockaddr_in));
532 if ( AF_INET == cs->addr_inbound->sin_family)
534 GNUNET_asprintf(&cs->addr_inbound_str,"%s:%u",address,ntohs(cs->addr_inbound->sin_port));
537 if ( AF_INET6 == cs->addr_inbound->sin_family)
539 GNUNET_asprintf(&cs->addr_inbound_str,"[%s]:%u",address,ntohs(cs->addr_inbound->sin_port));
543 if (cs->msgtok==NULL)
544 cs->msgtok = GNUNET_SERVER_mst_create (GNUNET_SERVER_MAX_MESSAGE_SIZE - 1, &messageTokenizerCallback, cs);
546 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"HTTP Daemon has new an incoming `%s' request from peer `%s'\n",method, GNUNET_i2s(&cs->identity));
550 cs = *httpSessionCache;
552 /* Is it a PUT or a GET request */
553 if (0 == strcmp (MHD_HTTP_METHOD_PUT, method))
556 if ((*upload_data_size == 0) && (cs->is_put_in_progress == GNUNET_NO))
558 if (cs->pending_inbound_msg.bytes_recv !=0 )
560 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
561 _("Incoming message from peer `%s', while existing message with %u bytes was not forwarded to transport'\n"),
562 GNUNET_i2s(&cs->identity), cs->pending_inbound_msg.bytes_recv);
563 cs->pending_inbound_msg.bytes_recv = 0;
566 cs->is_put_in_progress = GNUNET_YES;
567 cs->is_bad_request = GNUNET_NO;
571 if ((*upload_data_size > 0) && (cs->is_bad_request != GNUNET_YES))
573 if (*upload_data_size + cs->pending_inbound_msg.bytes_recv < GNUNET_SERVER_MAX_MESSAGE_SIZE)
575 /* copy uploaded data to buffer */
577 res = GNUNET_SERVER_mst_receive(cs->msgtok, cs, upload_data,*upload_data_size, GNUNET_YES, GNUNET_NO);
578 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"%u bytes forwarded to MST: result: %u\n",*upload_data_size, res);
579 cs->pending_inbound_msg.bytes_recv += *upload_data_size;
580 *upload_data_size = 0;
585 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"%u bytes not added to message of %u bytes, message to big\n",*upload_data_size, cs->pending_inbound_msg.bytes_recv);
586 cs->is_bad_request = GNUNET_YES;
587 /* (*upload_data_size) bytes not processed */
592 if ((cs->is_put_in_progress == GNUNET_YES) && (cs->is_bad_request == GNUNET_YES))
594 *upload_data_size = 0;
595 response = MHD_create_response_from_data (strlen (HTTP_PUT_RESPONSE),HTTP_PUT_RESPONSE, MHD_NO, MHD_NO);
596 res = MHD_queue_response (session, MHD_HTTP_REQUEST_ENTITY_TOO_LARGE, response);
599 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Sent HTTP/1.1: 413 Request Entity Too Large as PUT Response\n");
600 cs->is_bad_request = GNUNET_NO;
601 cs->is_put_in_progress =GNUNET_NO;
602 cs->pending_inbound_msg.bytes_recv = 0;
604 MHD_destroy_response (response);
608 /* Transmission of all data complete */
609 if ((*upload_data_size == 0) && (cs->is_put_in_progress == GNUNET_YES) && (cs->is_bad_request == GNUNET_NO))
611 send_error_to_client = GNUNET_YES;
612 if (cs->pending_inbound_msg.bytes_recv >= sizeof (struct GNUNET_MessageHeader))
613 send_error_to_client = GNUNET_NO;
615 if (send_error_to_client == GNUNET_NO)
617 //response = MHD_create_response_from_data (strlen (HTTP_PUT_RESPONSE),HTTP_PUT_RESPONSE, MHD_NO, MHD_NO);
618 //res = MHD_queue_response (session, MHD_HTTP_OK, response);
619 //GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Sent HTTP/1.1: 200 OK as PUT Response\n",HTTP_PUT_RESPONSE, strlen (HTTP_PUT_RESPONSE), res );
620 //MHD_destroy_response (response);
625 response = MHD_create_response_from_data (strlen (HTTP_PUT_RESPONSE),HTTP_PUT_RESPONSE, MHD_NO, MHD_NO);
626 res = MHD_queue_response (session, MHD_HTTP_BAD_REQUEST, response);
627 MHD_destroy_response (response);
628 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Sent HTTP/1.1: 400 BAD REQUEST as PUT Response\n");
630 cs->is_put_in_progress = GNUNET_NO;
631 cs->is_bad_request = GNUNET_NO;
632 cs->pending_inbound_msg.bytes_recv = 0;
636 if ( 0 == strcmp (MHD_HTTP_METHOD_GET, method) )
638 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Got GET Request\n");
639 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"URL: `%s'\n",url);
640 response = MHD_create_response_from_data (strlen (HTTP_PUT_RESPONSE),HTTP_PUT_RESPONSE, MHD_NO, MHD_NO);
641 res = MHD_queue_response (session, MHD_HTTP_OK, response);
642 MHD_destroy_response (response);
650 * Call MHD to process pending ipv4 requests and then go back
651 * and schedule the next run.
653 static void http_server_daemon_v4_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
655 * Call MHD to process pending ipv6 requests and then go back
656 * and schedule the next run.
658 static void http_server_daemon_v6_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
661 * Function that queries MHD's select sets and
662 * starts the task waiting for them.
664 static GNUNET_SCHEDULER_TaskIdentifier
665 http_server_daemon_prepare (void * cls, struct MHD_Daemon *daemon_handle)
667 struct Plugin *plugin = cls;
668 GNUNET_SCHEDULER_TaskIdentifier ret;
672 struct GNUNET_NETWORK_FDSet *wrs;
673 struct GNUNET_NETWORK_FDSet *wws;
674 struct GNUNET_NETWORK_FDSet *wes;
676 unsigned long long timeout;
678 struct GNUNET_TIME_Relative tv;
680 GNUNET_assert(cls !=NULL);
681 ret = GNUNET_SCHEDULER_NO_TASK;
685 wrs = GNUNET_NETWORK_fdset_create ();
686 wes = GNUNET_NETWORK_fdset_create ();
687 wws = GNUNET_NETWORK_fdset_create ();
689 GNUNET_assert (MHD_YES ==
690 MHD_get_fdset (daemon_handle,
695 haveto = MHD_get_timeout (daemon_handle, &timeout);
696 if (haveto == MHD_YES)
697 tv.value = (uint64_t) timeout;
699 tv = GNUNET_TIME_UNIT_FOREVER_REL;
700 GNUNET_NETWORK_fdset_copy_native (wrs, &rs, max);
701 GNUNET_NETWORK_fdset_copy_native (wws, &ws, max);
702 GNUNET_NETWORK_fdset_copy_native (wes, &es, max);
703 if (daemon_handle == plugin->http_server_daemon_v4)
705 ret = GNUNET_SCHEDULER_add_select (plugin->env->sched,
706 GNUNET_SCHEDULER_PRIORITY_DEFAULT,
707 GNUNET_SCHEDULER_NO_TASK,
711 &http_server_daemon_v4_run,
714 if (daemon_handle == plugin->http_server_daemon_v6)
716 ret = GNUNET_SCHEDULER_add_select (plugin->env->sched,
717 GNUNET_SCHEDULER_PRIORITY_DEFAULT,
718 GNUNET_SCHEDULER_NO_TASK,
722 &http_server_daemon_v6_run,
725 GNUNET_NETWORK_fdset_destroy (wrs);
726 GNUNET_NETWORK_fdset_destroy (wws);
727 GNUNET_NETWORK_fdset_destroy (wes);
732 * Call MHD to process pending requests and then go back
733 * and schedule the next run.
735 static void http_server_daemon_v4_run (void *cls,
736 const struct GNUNET_SCHEDULER_TaskContext *tc)
738 struct Plugin *plugin = cls;
740 GNUNET_assert(cls !=NULL);
741 if (plugin->http_server_task_v4 != GNUNET_SCHEDULER_NO_TASK)
742 plugin->http_server_task_v4 = GNUNET_SCHEDULER_NO_TASK;
744 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
747 GNUNET_assert (MHD_YES == MHD_run (plugin->http_server_daemon_v4));
748 plugin->http_server_task_v4 = http_server_daemon_prepare (plugin, plugin->http_server_daemon_v4);
754 * Call MHD to process pending requests and then go back
755 * and schedule the next run.
757 static void http_server_daemon_v6_run (void *cls,
758 const struct GNUNET_SCHEDULER_TaskContext *tc)
760 struct Plugin *plugin = cls;
762 GNUNET_assert(cls !=NULL);
763 if (plugin->http_server_task_v6 != GNUNET_SCHEDULER_NO_TASK)
764 plugin->http_server_task_v6 = GNUNET_SCHEDULER_NO_TASK;
766 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
769 GNUNET_assert (MHD_YES == MHD_run (plugin->http_server_daemon_v6));
770 plugin->http_server_task_v6 = http_server_daemon_prepare (plugin, plugin->http_server_daemon_v6);
775 * Removes a message from the linked list of messages
776 * @param ses session to remove message from
777 * @param msg message to remove
778 * @return GNUNET_SYSERR if msg not found, GNUNET_OK on success
781 static int remove_http_message(struct HTTP_Connection * con, struct HTTP_Message * msg)
783 GNUNET_CONTAINER_DLL_remove(con->pending_msgs_head,con->pending_msgs_tail,msg);
789 static size_t header_function( void *ptr, size_t size, size_t nmemb, void *stream)
792 size_t len = size * nmemb;
795 if ((size * nmemb) < SIZE_MAX)
796 tmp = GNUNET_malloc (len+1);
798 if ((tmp != NULL) && (len > 0))
803 if (tmp[len-2] == 13)
807 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Header: `%s'\n",tmp);
817 * Callback method used with libcurl
818 * Method is called when libcurl needs to read data during sending
819 * @param stream pointer where to write data
820 * @param size size of an individual element
821 * @param nmemb count of elements that can be written to the buffer
822 * @param ptr source pointer, passed to the libcurl handle
823 * @return bytes written to stream
825 static size_t send_read_callback(void *stream, size_t size, size_t nmemb, void *ptr)
827 struct HTTP_Connection * con = ptr;
828 struct HTTP_Message * msg = con->pending_msgs_tail;
832 msg = con->pending_msgs_head;
839 if (con->pending_msgs_tail != NULL)
840 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"readcallback: msg of %u bytes, %u msgs in queue\n", con->pending_msgs_tail->size,c);
842 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"readcallback: %u msgs in queue\n", c);
844 if (con->pending_msgs_tail == NULL)
846 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"no msgs in queue, pausing \n");
847 con->send_paused = GNUNET_YES;
848 return CURL_READFUNC_PAUSE;
851 msg = con->pending_msgs_tail;
853 if (msg->pos < msg->size)
855 /* data fit in buffer */
856 if ((msg->size - msg->pos) <= (size * nmemb))
858 len = (msg->size - msg->pos);
859 memcpy(stream, &msg->buf[msg->pos], len);
866 memcpy(stream, &msg->buf[msg->pos], len);
871 /* no data to send */
877 if ( msg->pos == msg->size)
879 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Messge %u bytes sent, removing message from queue \n", msg->pos);
880 /* Calling transmit continuation */
881 if (( NULL != con->pending_msgs_tail) && (NULL != con->pending_msgs_tail->transmit_cont))
882 msg->transmit_cont (con->pending_msgs_tail->transmit_cont_cls,&(con->session)->identity,GNUNET_OK);
883 remove_http_message(con, msg);
885 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"readcallback: sent %u bytes \n", bytes_sent);
891 * Callback method used with libcurl
892 * Method is called when libcurl needs to write data during sending
893 * @param stream pointer where to write data
894 * @param size size of an individual element
895 * @param nmemb count of elements that can be written to the buffer
896 * @param ptr destination pointer, passed to the libcurl handle
897 * @return bytes read from stream
899 static size_t send_write_callback( void *stream, size_t size, size_t nmemb, void *ptr)
903 if ((size * nmemb) < SIZE_MAX)
904 data = GNUNET_malloc(size*nmemb +1);
907 memcpy( data, stream, size*nmemb);
908 data[size*nmemb] = '\0';
911 return (size * nmemb);
916 * Function setting up file descriptors and scheduling task to run
917 * @param ses session to send data to
918 * @return bytes sent to peer
920 static size_t send_schedule(void *cls, struct Session* ses );
923 * Function setting up curl handle and selecting message to send
924 * @param ses session to send data to
925 * @return bytes sent to peer
927 static ssize_t send_initiate (void *cls, struct Session* ses , struct HTTP_Connection *con)
929 struct Plugin *plugin = cls;
932 struct HTTP_Message * msg;
933 struct GNUNET_TIME_Relative timeout = GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT;
935 /* already connected, no need to initiate connection */
936 if ((con->connected == GNUNET_YES) && (con->curl_handle != NULL) && (con->send_paused == GNUNET_NO))
939 if ((con->connected == GNUNET_YES) && (con->curl_handle != NULL) && (con->send_paused == GNUNET_YES))
941 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"UNPAUSING\n");
942 curl_easy_pause(con->curl_handle,CURLPAUSE_CONT);
946 /* not connected, initiate connection */
947 GNUNET_assert(cls !=NULL);
949 if ( NULL == con->curl_handle)
950 con->curl_handle = curl_easy_init();
951 GNUNET_assert (con->curl_handle != NULL);
955 GNUNET_assert (NULL != con->pending_msgs_tail);
956 msg = con->pending_msgs_tail;
959 curl_easy_setopt(con->curl_handle, CURLOPT_VERBOSE, 1L);
961 curl_easy_setopt(con->curl_handle, CURLOPT_URL, con->url);
962 curl_easy_setopt(con->curl_handle, CURLOPT_PUT, 1L);
963 curl_easy_setopt(con->curl_handle, CURLOPT_HEADERFUNCTION, &header_function);
964 curl_easy_setopt(con->curl_handle, CURLOPT_WRITEHEADER, con);
965 curl_easy_setopt(con->curl_handle, CURLOPT_READFUNCTION, send_read_callback);
966 curl_easy_setopt(con->curl_handle, CURLOPT_READDATA, con);
967 curl_easy_setopt(con->curl_handle, CURLOPT_WRITEFUNCTION, send_write_callback);
968 curl_easy_setopt(con->curl_handle, CURLOPT_READDATA, con);
969 curl_easy_setopt(con->curl_handle, CURLOPT_TIMEOUT, (long) timeout.value);
970 curl_easy_setopt(con->curl_handle, CURLOPT_PRIVATE, con);
971 curl_easy_setopt(con->curl_handle, CURLOPT_CONNECTTIMEOUT, HTTP_CONNECT_TIMEOUT_DBG);
972 curl_easy_setopt(con->curl_handle, CURLOPT_BUFFERSIZE, GNUNET_SERVER_MAX_MESSAGE_SIZE);
974 mret = curl_multi_add_handle(plugin->multi_handle, con->curl_handle);
975 if (mret != CURLM_OK)
977 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
978 _("%s failed at %s:%d: `%s'\n"),
979 "curl_multi_add_handle", __FILE__, __LINE__,
980 curl_multi_strerror (mret));
984 con->connected = GNUNET_YES;
986 bytes_sent = send_schedule (plugin, ses);
990 static void send_execute (void *cls,
991 const struct GNUNET_SCHEDULER_TaskContext *tc)
993 struct Plugin *plugin = cls;
994 static unsigned int handles_last_run;
998 struct HTTP_Connection * con = NULL;
999 struct Session * cs = NULL;
1002 GNUNET_assert(cls !=NULL);
1003 plugin->http_server_task_send = GNUNET_SCHEDULER_NO_TASK;
1004 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
1010 mret = curl_multi_perform (plugin->multi_handle, &running);
1011 if (running < handles_last_run)
1016 msg = curl_multi_info_read (plugin->multi_handle, &running);
1017 GNUNET_break (msg != NULL);
1020 /* get session for affected curl handle */
1021 GNUNET_assert ( msg->easy_handle != NULL );
1022 curl_easy_getinfo(msg->easy_handle, CURLINFO_PRIVATE, (char *) &con);
1023 GNUNET_assert ( con != NULL );
1025 GNUNET_assert ( cs != NULL );
1030 if ( (msg->data.result != CURLE_OK) &&
1031 (msg->data.result != CURLE_GOT_NOTHING) )
1033 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
1034 _("%s failed for `%s' at %s:%d: `%s'\n"),
1035 "curl_multi_perform",
1036 GNUNET_i2s(&cs->identity),
1039 curl_easy_strerror (msg->data.result));
1040 /* sending msg failed*/
1041 con->connected = GNUNET_NO;
1042 if (( NULL != con->pending_msgs_tail) && ( NULL != con->pending_msgs_tail->transmit_cont))
1043 con->pending_msgs_tail->transmit_cont (con->pending_msgs_tail->transmit_cont_cls,&con->session->identity,GNUNET_SYSERR);
1048 GNUNET_assert (CURLE_OK == curl_easy_getinfo(msg->easy_handle, CURLINFO_RESPONSE_CODE, &http_result));
1049 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1050 "Send to peer `%s' completed with code %u\n", GNUNET_i2s(&cs->identity), http_result );
1052 curl_easy_cleanup(con->curl_handle);
1053 con->connected = GNUNET_NO;
1054 con->curl_handle=NULL;
1056 /* Calling transmit continuation */
1057 if (( NULL != con->pending_msgs_tail) && (NULL != con->pending_msgs_tail->transmit_cont))
1059 /* HTTP 1xx : Last message before here was informational */
1060 if ((http_result >=100) && (http_result < 200))
1061 con->pending_msgs_tail->transmit_cont (con->pending_msgs_tail->transmit_cont_cls,&cs->identity,GNUNET_OK);
1062 /* HTTP 2xx: successful operations */
1063 if ((http_result >=200) && (http_result < 300))
1064 con->pending_msgs_tail->transmit_cont (con->pending_msgs_tail->transmit_cont_cls,&cs->identity,GNUNET_OK);
1065 /* HTTP 3xx..5xx: error */
1066 if ((http_result >=300) && (http_result < 600))
1067 con->pending_msgs_tail->transmit_cont (con->pending_msgs_tail->transmit_cont_cls,&cs->identity,GNUNET_SYSERR);
1070 if (con->pending_msgs_tail != NULL)
1072 remove_http_message(con, con->pending_msgs_tail);
1073 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Message could not be removed from session `%s'", GNUNET_i2s(&cs->identity));
1081 while ( (running > 0) );
1083 handles_last_run = running;
1085 while (mret == CURLM_CALL_MULTI_PERFORM);
1086 send_schedule(plugin, cls);
1091 * Function setting up file descriptors and scheduling task to run
1092 * @param ses session to send data to
1093 * @return bytes sent to peer
1095 static size_t send_schedule(void *cls, struct Session* ses )
1097 struct Plugin *plugin = cls;
1102 struct GNUNET_NETWORK_FDSet *grs;
1103 struct GNUNET_NETWORK_FDSet *gws;
1107 GNUNET_assert(cls !=NULL);
1112 mret = curl_multi_fdset (plugin->multi_handle, &rs, &ws, &es, &max);
1113 if (mret != CURLM_OK)
1115 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1116 _("%s failed at %s:%d: `%s'\n"),
1117 "curl_multi_fdset", __FILE__, __LINE__,
1118 curl_multi_strerror (mret));
1121 mret = curl_multi_timeout (plugin->multi_handle, &to);
1122 if (mret != CURLM_OK)
1124 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1125 _("%s failed at %s:%d: `%s'\n"),
1126 "curl_multi_timeout", __FILE__, __LINE__,
1127 curl_multi_strerror (mret));
1131 grs = GNUNET_NETWORK_fdset_create ();
1132 gws = GNUNET_NETWORK_fdset_create ();
1133 GNUNET_NETWORK_fdset_copy_native (grs, &rs, max + 1);
1134 GNUNET_NETWORK_fdset_copy_native (gws, &ws, max + 1);
1135 plugin->http_server_task_send = GNUNET_SCHEDULER_add_select (plugin->env->sched,
1136 GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1137 GNUNET_SCHEDULER_NO_TASK,
1138 GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 0),
1143 GNUNET_NETWORK_fdset_destroy (gws);
1144 GNUNET_NETWORK_fdset_destroy (grs);
1146 /* FIXME: return bytes REALLY sent */
1151 * Check if session for this peer is already existing, otherwise create it
1152 * @param cls the plugin used
1153 * @param p peer to get session for
1154 * @return session found or created
1156 static struct Session * session_get (void * cls, const struct GNUNET_PeerIdentity *p)
1158 struct Plugin *plugin = cls;
1162 cs = GNUNET_CONTAINER_multihashmap_get (plugin->sessions, &p->hashPubKey);
1165 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1166 "Session `%s' found\n", GNUNET_i2s(p));
1170 cs = create_session(plugin, NULL, 0, NULL, 0, p);
1171 res = GNUNET_CONTAINER_multihashmap_put ( plugin->sessions,
1172 &cs->identity.hashPubKey,
1174 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
1175 if (res == GNUNET_OK)
1176 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1177 "New Session `%s' inserted\n", GNUNET_i2s(p));
1182 static char * create_url(void * cls, const void * addr, size_t addrlen)
1184 struct Plugin *plugin = cls;
1188 GNUNET_assert ((addr!=NULL) && (addrlen != 0));
1189 if (addrlen == (sizeof (struct IPv4HttpAddress)))
1191 address = GNUNET_malloc(INET_ADDRSTRLEN + 1);
1192 inet_ntop(AF_INET, &((struct IPv4HttpAddress *) addr)->ipv4_addr,address,INET_ADDRSTRLEN);
1193 GNUNET_asprintf (&url,
1196 ntohs(((struct IPv4HttpAddress *) addr)->u_port),
1197 (char *) (&plugin->my_ascii_hash_ident));
1198 GNUNET_free(address);
1200 else if (addrlen == (sizeof (struct IPv6HttpAddress)))
1202 address = GNUNET_malloc(INET6_ADDRSTRLEN + 1);
1203 inet_ntop(AF_INET6, &((struct IPv6HttpAddress *) addr)->ipv6_addr,address,INET6_ADDRSTRLEN);
1204 GNUNET_asprintf(&url,
1207 ntohs(((struct IPv6HttpAddress *) addr)->u6_port),
1208 (char *) (&plugin->my_ascii_hash_ident));
1209 GNUNET_free(address);
1215 * Check if session already knows this address for a outbound connection to this peer
1216 * If address not in session, add it to the session
1217 * @param cls the plugin used
1218 * @param p the session
1219 * @param addr address
1220 * @param addr_len address length
1221 * @return GNUNET_NO if address not known, GNUNET_YES if known
1223 static struct HTTP_Connection * session_check_address (void * cls, struct Session *cs, const void * addr, size_t addr_len)
1225 struct Plugin *plugin = cls;
1226 struct HTTP_Connection * cc = cs->outbound_addresses_head;
1227 struct HTTP_Connection * con = NULL;
1229 GNUNET_assert((addr_len == sizeof (struct IPv4HttpAddress)) || (addr_len == sizeof (struct IPv6HttpAddress)));
1233 if (addr_len == cc->addrlen)
1235 if (0 == memcmp(cc->addr, addr, addr_len))
1245 con = GNUNET_malloc(sizeof(struct HTTP_Connection) + addr_len);
1246 con->addrlen = addr_len;
1248 con->url=create_url(plugin, addr, addr_len);
1249 con->connected = GNUNET_NO;
1251 memcpy(con->addr, addr, addr_len);
1252 GNUNET_CONTAINER_DLL_insert(cs->outbound_addresses_head,cs->outbound_addresses_tail,con);
1258 * Function that can be used by the transport service to transmit
1259 * a message using the plugin.
1261 * @param cls closure
1262 * @param target who should receive this message
1263 * @param priority how important is the message
1264 * @param msgbuf the message to transmit
1265 * @param msgbuf_size number of bytes in 'msgbuf'
1266 * @param to when should we time out
1267 * @param session which session must be used (or NULL for "any")
1268 * @param addr the address to use (can be NULL if the plugin
1269 * is "on its own" (i.e. re-use existing TCP connection))
1270 * @param addrlen length of the address in bytes
1271 * @param force_address GNUNET_YES if the plugin MUST use the given address,
1272 * otherwise the plugin may use other addresses or
1273 * existing connections (if available)
1274 * @param cont continuation to call once the message has
1275 * been transmitted (or if the transport is ready
1276 * for the next transmission call; or if the
1277 * peer disconnected...)
1278 * @param cont_cls closure for cont
1279 * @return number of bytes used (on the physical network, with overheads);
1280 * -1 on hard errors (i.e. address invalid); 0 is a legal value
1281 * and does NOT mean that the message was not transmitted (DV)
1284 http_plugin_send (void *cls,
1285 const struct GNUNET_PeerIdentity *target,
1288 unsigned int priority,
1289 struct GNUNET_TIME_Relative to,
1290 struct Session *session,
1294 GNUNET_TRANSPORT_TransmitContinuation cont,
1297 struct Plugin *plugin = cls;
1301 struct HTTP_Message *msg;
1302 struct HTTP_Connection *con;
1305 GNUNET_assert(cls !=NULL);
1309 /* get session from hashmap */
1310 cs = session_get(plugin, target);
1311 con = session_check_address(plugin, cs, addr, addrlen);
1314 msg = GNUNET_malloc (sizeof (struct HTTP_Message) + msgbuf_size);
1316 msg->size = msgbuf_size;
1318 msg->buf = (char *) &msg[1];
1319 msg->dest_url = url;
1320 msg->transmit_cont = cont;
1321 msg->transmit_cont_cls = cont_cls;
1322 memcpy (msg->buf,msgbuf, msgbuf_size);
1324 /* must use this address */
1325 if (force_address == GNUNET_YES)
1327 /* enqueue in connection message queue */
1328 GNUNET_CONTAINER_DLL_insert(con->pending_msgs_head,con->pending_msgs_tail,msg);
1330 /* can use existing connection to send */
1333 /* enqueue in connection message queue */
1334 GNUNET_CONTAINER_DLL_insert(con->pending_msgs_head,con->pending_msgs_tail,msg);
1336 return send_initiate (plugin, cs, con);
1342 * Function that can be used to force the plugin to disconnect
1343 * from the given peer and cancel all previous transmissions
1344 * (and their continuationc).
1346 * @param cls closure
1347 * @param target peer from which to disconnect
1350 http_plugin_disconnect (void *cls,
1351 const struct GNUNET_PeerIdentity *target)
1353 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"HTTP Plugin: http_plugin_disconnect\n");
1354 // struct Plugin *plugin = cls;
1360 * Convert the transports address to a nice, human-readable
1363 * @param cls closure
1364 * @param type name of the transport that generated the address
1365 * @param addr one of the addresses of the host, NULL for the last address
1366 * the specific address format depends on the transport
1367 * @param addrlen length of the address
1368 * @param numeric should (IP) addresses be displayed in numeric form?
1369 * @param timeout after how long should we give up?
1370 * @param asc function to call on each string
1371 * @param asc_cls closure for asc
1374 http_plugin_address_pretty_printer (void *cls,
1379 struct GNUNET_TIME_Relative timeout,
1380 GNUNET_TRANSPORT_AddressStringCallback
1383 const struct IPv4HttpAddress *t4;
1384 const struct IPv6HttpAddress *t6;
1385 struct sockaddr_in a4;
1386 struct sockaddr_in6 a6;
1392 GNUNET_assert(cls !=NULL);
1393 if (addrlen == sizeof (struct IPv6HttpAddress))
1395 address = GNUNET_malloc (INET6_ADDRSTRLEN);
1397 a6.sin6_addr = t6->ipv6_addr;
1398 inet_ntop(AF_INET6, &(a6.sin6_addr),address,INET6_ADDRSTRLEN);
1399 port = ntohs(t6->u6_port);
1401 else if (addrlen == sizeof (struct IPv4HttpAddress))
1403 address = GNUNET_malloc (INET_ADDRSTRLEN);
1405 a4.sin_addr.s_addr = t4->ipv4_addr;
1406 inet_ntop(AF_INET, &(a4.sin_addr),address,INET_ADDRSTRLEN);
1407 port = ntohs(t4->u_port);
1411 /* invalid address */
1412 GNUNET_break_op (0);
1413 asc (asc_cls, NULL);
1416 res = GNUNET_asprintf(&ret,"http://%s:%u/",address,port);
1417 GNUNET_free (address);
1418 GNUNET_assert(res != 0);
1426 * Another peer has suggested an address for this
1427 * peer and transport plugin. Check that this could be a valid
1428 * address. If so, consider adding it to the list
1431 * @param cls closure
1432 * @param addr pointer to the address
1433 * @param addrlen length of addr
1434 * @return GNUNET_OK if this is a plausible address for this peer
1438 http_plugin_address_suggested (void *cls,
1439 void *addr, size_t addrlen)
1441 struct Plugin *plugin = cls;
1442 struct IPv4HttpAddress *v4;
1443 struct IPv6HttpAddress *v6;
1446 GNUNET_assert(cls !=NULL);
1447 if ((addrlen != sizeof (struct IPv4HttpAddress)) &&
1448 (addrlen != sizeof (struct IPv6HttpAddress)))
1450 return GNUNET_SYSERR;
1452 if (addrlen == sizeof (struct IPv4HttpAddress))
1454 v4 = (struct IPv4HttpAddress *) addr;
1455 if (INADDR_LOOPBACK == ntohl(v4->ipv4_addr))
1457 return GNUNET_SYSERR;
1459 port = ntohs (v4->u_port);
1460 if (port != plugin->port_inbound)
1462 return GNUNET_SYSERR;
1467 v6 = (struct IPv6HttpAddress *) addr;
1468 if (IN6_IS_ADDR_LINKLOCAL (&v6->ipv6_addr))
1470 return GNUNET_SYSERR;
1472 port = ntohs (v6->u6_port);
1473 if (port != plugin->port_inbound)
1475 return GNUNET_SYSERR;
1485 * Function called for a quick conversion of the binary address to
1486 * a numeric address. Note that the caller must not free the
1487 * address and that the next call to this function is allowed
1488 * to override the address again.
1490 * @param cls closure
1491 * @param addr binary address
1492 * @param addrlen length of the address
1493 * @return string representing the same address
1496 http_plugin_address_to_string (void *cls,
1500 const struct IPv4HttpAddress *t4;
1501 const struct IPv6HttpAddress *t6;
1502 struct sockaddr_in a4;
1503 struct sockaddr_in6 a6;
1509 GNUNET_assert(cls !=NULL);
1510 if (addrlen == sizeof (struct IPv6HttpAddress))
1512 address = GNUNET_malloc (INET6_ADDRSTRLEN);
1514 a6.sin6_addr = t6->ipv6_addr;
1515 inet_ntop(AF_INET6, &(a6.sin6_addr),address,INET6_ADDRSTRLEN);
1516 port = ntohs(t6->u6_port);
1518 else if (addrlen == sizeof (struct IPv4HttpAddress))
1520 address = GNUNET_malloc (INET_ADDRSTRLEN);
1522 a4.sin_addr.s_addr = t4->ipv4_addr;
1523 inet_ntop(AF_INET, &(a4.sin_addr),address,INET_ADDRSTRLEN);
1524 port = ntohs(t4->u_port);
1528 /* invalid address */
1531 res = GNUNET_asprintf(&ret,"%s:%u",address,port);
1532 GNUNET_free (address);
1533 GNUNET_assert(res != 0);
1538 * Add the IP of our network interface to the list of
1539 * our external IP addresses.
1541 * @param cls the 'struct Plugin*'
1542 * @param name name of the interface
1543 * @param isDefault do we think this may be our default interface
1544 * @param addr address of the interface
1545 * @param addrlen number of bytes in addr
1546 * @return GNUNET_OK to continue iterating
1549 process_interfaces (void *cls,
1552 const struct sockaddr *addr, socklen_t addrlen)
1554 struct Plugin *plugin = cls;
1555 struct IPv4HttpAddress t4;
1556 struct IPv6HttpAddress t6;
1561 GNUNET_assert(cls !=NULL);
1562 af = addr->sa_family;
1565 if (INADDR_LOOPBACK == ntohl(((struct sockaddr_in *) addr)->sin_addr.s_addr))
1567 /* skip loopback addresses */
1570 t4.ipv4_addr = ((struct sockaddr_in *) addr)->sin_addr.s_addr;
1571 t4.u_port = htons (plugin->port_inbound);
1575 else if (af == AF_INET6)
1577 if (IN6_IS_ADDR_LINKLOCAL (&((struct sockaddr_in6 *) addr)->sin6_addr))
1579 /* skip link local addresses */
1582 if (IN6_IS_ADDR_LOOPBACK (&((struct sockaddr_in6 *) addr)->sin6_addr))
1584 /* skip loopback addresses */
1587 memcpy (&t6.ipv6_addr,
1588 &((struct sockaddr_in6 *) addr)->sin6_addr,
1589 sizeof (struct in6_addr));
1590 t6.u6_port = htons (plugin->port_inbound);
1599 plugin->env->notify_address(plugin->env->cls,"http",arg, args, GNUNET_TIME_UNIT_FOREVER_REL);
1603 int hashMapFreeIterator (void *cls, const GNUNET_HashCode *key, void *value)
1605 struct Session * cs = value;
1607 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Freeing session for peer `%s'\n",GNUNET_i2s(&cs->identity));
1609 /* freeing messages */
1610 struct HTTP_Message *cur;
1611 struct HTTP_Message *tmp;
1612 cur = cs->pending_outbound_msg_head;
1617 GNUNET_free_non_null(cur->dest_url);
1621 GNUNET_SERVER_mst_destroy (cs->msgtok);
1622 GNUNET_free_non_null (cs->addr_in);
1623 GNUNET_free_non_null (cs->addr_out);
1629 * Exit point from the plugin.
1632 libgnunet_plugin_transport_http_done (void *cls)
1634 struct GNUNET_TRANSPORT_PluginFunctions *api = cls;
1635 struct Plugin *plugin = api->cls;
1638 GNUNET_assert(cls !=NULL);
1641 if ( plugin->http_server_task_v4 != GNUNET_SCHEDULER_NO_TASK)
1643 GNUNET_SCHEDULER_cancel(plugin->env->sched, plugin->http_server_task_v4);
1644 plugin->http_server_task_v4 = GNUNET_SCHEDULER_NO_TASK;
1647 if ( plugin->http_server_task_v6 != GNUNET_SCHEDULER_NO_TASK)
1649 GNUNET_SCHEDULER_cancel(plugin->env->sched, plugin->http_server_task_v6);
1650 plugin->http_server_task_v6 = GNUNET_SCHEDULER_NO_TASK;
1653 if ( plugin->http_server_task_send != GNUNET_SCHEDULER_NO_TASK)
1655 GNUNET_SCHEDULER_cancel(plugin->env->sched, plugin->http_server_task_send);
1656 plugin->http_server_task_send = GNUNET_SCHEDULER_NO_TASK;
1659 if (plugin->http_server_daemon_v4 != NULL)
1661 MHD_stop_daemon (plugin->http_server_daemon_v4);
1662 plugin->http_server_daemon_v4 = NULL;
1664 if (plugin->http_server_daemon_v6 != NULL)
1666 MHD_stop_daemon (plugin->http_server_daemon_v6);
1667 plugin->http_server_daemon_v6 = NULL;
1670 /* free all sessions */
1671 GNUNET_CONTAINER_multihashmap_iterate (plugin->sessions,
1672 &hashMapFreeIterator,
1675 GNUNET_CONTAINER_multihashmap_destroy (plugin->sessions);
1677 mret = curl_multi_cleanup(plugin->multi_handle);
1678 if ( CURLM_OK != mret)
1679 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"curl multihandle clean up failed");
1681 GNUNET_free (plugin);
1683 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Unload http plugin complete...\n");
1689 * Entry point for the plugin.
1692 libgnunet_plugin_transport_http_init (void *cls)
1694 struct GNUNET_TRANSPORT_PluginEnvironment *env = cls;
1695 struct Plugin *plugin;
1696 struct GNUNET_TRANSPORT_PluginFunctions *api;
1697 struct GNUNET_TIME_Relative gn_timeout;
1698 long long unsigned int port;
1700 GNUNET_assert(cls !=NULL);
1701 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting http plugin...\n");
1703 plugin = GNUNET_malloc (sizeof (struct Plugin));
1705 plugin->sessions = NULL;
1707 api = GNUNET_malloc (sizeof (struct GNUNET_TRANSPORT_PluginFunctions));
1709 api->send = &http_plugin_send;
1710 api->disconnect = &http_plugin_disconnect;
1711 api->address_pretty_printer = &http_plugin_address_pretty_printer;
1712 api->check_address = &http_plugin_address_suggested;
1713 api->address_to_string = &http_plugin_address_to_string;
1715 /* Hashing our identity to use it in URLs */
1716 GNUNET_CRYPTO_hash_to_enc ( &(plugin->env->my_identity->hashPubKey), &plugin->my_ascii_hash_ident);
1718 /* Reading port number from config file */
1720 GNUNET_CONFIGURATION_get_value_number (env->cfg,
1726 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
1729 ("Require valid port number for transport plugin `%s' in configuration!\n"),
1731 libgnunet_plugin_transport_http_done (api);
1734 GNUNET_assert ((port > 0) && (port <= 65535));
1735 plugin->port_inbound = port;
1736 gn_timeout = GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT;
1737 if ((plugin->http_server_daemon_v4 == NULL) && (plugin->http_server_daemon_v6 == NULL) && (port != 0))
1739 plugin->http_server_daemon_v6 = MHD_start_daemon (MHD_USE_IPv6,
1741 &acceptPolicyCallback,
1742 plugin , &accessHandlerCallback, plugin,
1743 MHD_OPTION_CONNECTION_LIMIT, (unsigned int) 16,
1744 MHD_OPTION_PER_IP_CONNECTION_LIMIT, (unsigned int) 1,
1745 MHD_OPTION_CONNECTION_TIMEOUT, (gn_timeout.value / 1000),
1746 MHD_OPTION_CONNECTION_MEMORY_LIMIT, (size_t) (16 * 1024),
1747 MHD_OPTION_NOTIFY_COMPLETED, &requestCompletedCallback, NULL,
1749 plugin->http_server_daemon_v4 = MHD_start_daemon (MHD_NO_FLAG,
1751 &acceptPolicyCallback,
1752 plugin , &accessHandlerCallback, plugin,
1753 MHD_OPTION_CONNECTION_LIMIT, (unsigned int) 16,
1754 MHD_OPTION_PER_IP_CONNECTION_LIMIT, (unsigned int) 1,
1755 MHD_OPTION_CONNECTION_TIMEOUT, (gn_timeout.value / 1000),
1756 MHD_OPTION_CONNECTION_MEMORY_LIMIT, (size_t) (16 * 1024),
1757 MHD_OPTION_NOTIFY_COMPLETED, &requestCompletedCallback, NULL,
1760 if (plugin->http_server_daemon_v4 != NULL)
1761 plugin->http_server_task_v4 = http_server_daemon_prepare (plugin, plugin->http_server_daemon_v4);
1762 if (plugin->http_server_daemon_v6 != NULL)
1763 plugin->http_server_task_v6 = http_server_daemon_prepare (plugin, plugin->http_server_daemon_v6);
1765 if (plugin->http_server_task_v4 != GNUNET_SCHEDULER_NO_TASK)
1766 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting MHD with IPv4 on port %u\n",port);
1767 else if (plugin->http_server_task_v6 != GNUNET_SCHEDULER_NO_TASK)
1768 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting MHD with IPv4 and IPv6 on port %u\n",port);
1771 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"No MHD was started, transport plugin not functional!\n");
1772 libgnunet_plugin_transport_http_done (api);
1776 /* Initializing cURL */
1777 curl_global_init(CURL_GLOBAL_ALL);
1778 plugin->multi_handle = curl_multi_init();
1780 if ( NULL == plugin->multi_handle )
1782 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
1784 _("Could not initialize curl multi handle, failed to start http plugin!\n"),
1786 libgnunet_plugin_transport_http_done (api);
1790 plugin->sessions = GNUNET_CONTAINER_multihashmap_create (10);
1791 GNUNET_OS_network_interfaces_list (&process_interfaces, plugin);
1796 /* end of plugin_transport_http.c */