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_template.c
23 * @brief template for a new transport service
24 * @author Christian Grothoff
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 "plugin_transport.h"
37 #include "gnunet_os_lib.h"
38 #include "microhttpd.h"
39 #include <curl/curl.h>
42 #define DEBUG_CURL GNUNET_NO
43 #define DEBUG_HTTP GNUNET_NO
46 * Text of the response sent back after the last bytes of a PUT
47 * request have been received (just to formally obey the HTTP
50 #define HTTP_PUT_RESPONSE "Thank you!"
53 * After how long do we expire an address that we
54 * learned from another peer if it is not reconfirmed
57 #define LEARNED_ADDRESS_EXPIRATION GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_HOURS, 6)
60 * Page returned if request invalid
62 #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>"
65 * Timeout for a http connect
67 #define HTTP_CONNECT_TIMEOUT 30
70 * Timeout for a http connect
72 #define HTTP_MESSAGE_INITIAL_BUFFERSIZE GNUNET_SERVER_MAX_MESSAGE_SIZE
76 * Encapsulation of all of the state of the plugin.
81 * Network format for IPv4 addresses.
83 struct IPv4HttpAddress
86 * IPv4 address, in network byte order.
91 * Port number, in network byte order.
99 * Network format for IPv6 addresses.
101 struct IPv6HttpAddress
106 struct in6_addr ipv6_addr;
109 * Port number, in network byte order.
118 * Message to send using http
123 * Next field for linked list
125 struct HTTP_Message * next;
128 * buffer containing data to send
133 * amount of data already sent
138 * amount of data to sent
145 * Continuation function to call once the transmission buffer
146 * has again space available. NULL if there is no
147 * continuation to call.
149 GNUNET_TRANSPORT_TransmitContinuation transmit_cont;
152 * Closure for transmit_cont.
154 void *transmit_cont_cls;
156 unsigned int http_result_code;
161 * Session handle for connections.
167 * Stored in a linked list.
169 struct Session *next;
172 * Pointer to the global plugin struct.
174 struct Plugin *plugin;
177 * To whom are we talking to (set to our identity
178 * if we are still waiting for the welcome message)
180 struct GNUNET_PeerIdentity sender;
183 * Sender's ip address to distinguish between incoming connections
185 struct sockaddr_in * addr_inbound;
188 * Sender's ip address recieved by transport
190 struct sockaddr_in * addr_outbound;
193 * Did we initiate the connection (GNUNET_YES) or the other peer (GNUNET_NO)?
195 unsigned int is_client;
198 * Is the connection active (GNUNET_YES) or terminated (GNUNET_NO)?
200 unsigned int is_active;
203 * At what time did we reset last_received last?
205 struct GNUNET_TIME_Absolute last_quota_update;
208 * How many bytes have we received since the "last_quota_update"
211 uint64_t last_received;
214 * Number of bytes per ms that this peer is allowed
220 * Is there a HTTP/PUT in progress?
222 unsigned int is_put_in_progress;
225 * Is there a HTTP/PUT in progress?
227 unsigned int is_bad_request;
232 struct GNUNET_CRYPTO_HashAsciiEncoded hash;
234 struct HTTP_Message * pending_outbound_msg;;
236 struct HTTP_Message * pending_inbound_msg;
242 * Encapsulation of all of the state of the plugin.
249 struct GNUNET_TRANSPORT_PluginEnvironment *env;
251 unsigned int port_inbound;
254 * List of open sessions.
256 struct Session *sessions;
259 * Number of active sessions
262 unsigned int session_count;
266 * Daemon for listening for new IPv4 connections.
268 static struct MHD_Daemon *http_daemon_v4;
271 * Daemon for listening for new IPv6connections.
273 static struct MHD_Daemon *http_daemon_v6;
276 * Our primary task for http daemon handling IPv4 connections
278 static GNUNET_SCHEDULER_TaskIdentifier http_task_v4;
281 * Our primary task for http daemon handling IPv6 connections
283 static GNUNET_SCHEDULER_TaskIdentifier http_task_v6;
287 * The task sending data
289 static GNUNET_SCHEDULER_TaskIdentifier http_task_send;
293 * Information about this plugin
295 static struct Plugin *plugin;
300 static CURLM *multi_handle;
303 * Our ASCII encoded, hashed peer identity
304 * This string is used to distinguish between connections and is added to the urls
306 static struct GNUNET_CRYPTO_HashAsciiEncoded my_ascii_hash_ident;
308 // MW: please document (which timeout is this!?)
309 static struct GNUNET_TIME_Relative timeout;
312 * Finds a http session in our linked list using peer identity as a key
313 * @param peer peeridentity
314 * @return http session corresponding to peer identity
316 static struct Session * find_session_by_pi( const struct GNUNET_PeerIdentity *peer )
318 struct Session * cur;
319 GNUNET_HashCode hc_peer;
320 GNUNET_HashCode hc_current;
322 cur = plugin->sessions;
323 hc_peer = peer->hashPubKey;
326 hc_current = cur->sender.hashPubKey;
327 if ( 0 == GNUNET_CRYPTO_hash_cmp( &hc_peer, &hc_current))
329 cur = plugin->sessions->next;
335 * Finds a http session in our linked list using libcurl handle as a key
336 * Needed when sending data with libcurl to differentiate between sessions
337 * @param handle peeridentity
338 * @return http session corresponding to peer identity
340 static struct Session * find_session_by_curlhandle( CURL* handle )
342 struct Session * cur;
344 cur = plugin->sessions;
347 if ( handle == cur->curl_handle )
349 cur = plugin->sessions->next;
355 * Create a new session
357 * @param addr_in address the peer is using inbound
358 * @param addr_out address the peer is using outbound
359 * @param peer identity
360 * @return created session object
362 static struct Session * create_session (struct sockaddr_in *addr_in, struct sockaddr_in *addr_out, const struct GNUNET_PeerIdentity *peer)
364 struct Session * ses = GNUNET_malloc ( sizeof( struct Session) );
366 ses->addr_inbound = GNUNET_malloc ( sizeof (struct sockaddr_in) );
367 ses->addr_outbound = GNUNET_malloc ( sizeof (struct sockaddr_in) );
368 ses->plugin = plugin;
369 if ((NULL != addr_in) && (( AF_INET == addr_in->sin_family) || ( AF_INET6 == addr_in->sin_family)))
371 memcpy(ses->addr_inbound, addr_in, sizeof (struct sockaddr_in));
373 if ((NULL != addr_out) && (( AF_INET == addr_out->sin_family) || ( AF_INET6 == addr_out->sin_family)))
375 memcpy(ses->addr_outbound, addr_out, sizeof (struct sockaddr_in));
377 memcpy(&ses->sender, peer, sizeof (struct GNUNET_PeerIdentity));
378 GNUNET_CRYPTO_hash_to_enc(&ses->sender.hashPubKey,&(ses->hash));
379 ses->is_active = GNUNET_NO;
380 ses->pending_inbound_msg = GNUNET_malloc( sizeof (struct HTTP_Message));
381 ses->pending_inbound_msg->buf = GNUNET_malloc(GNUNET_SERVER_MAX_MESSAGE_SIZE);
382 ses->pending_inbound_msg->len = GNUNET_SERVER_MAX_MESSAGE_SIZE;
383 ses->pending_inbound_msg->pos = 0;
388 * Callback called by MHD when a connection is terminated
390 static void requestCompletedCallback (void *cls, struct MHD_Connection * connection, void **httpSessionCache)
394 cs = *httpSessionCache;
397 /*GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection from peer `%s' was terminated\n",GNUNET_i2s(&cs->sender));*/
398 /* session set to inactive */
399 cs->is_active = GNUNET_NO;
400 cs->is_put_in_progress = GNUNET_NO;
406 * Check if we are allowed to connect to the given IP.
409 acceptPolicyCallback (void *cls,
410 const struct sockaddr *addr, socklen_t addr_len)
412 /* Every connection is accepted, nothing more to do here */
417 * Process GET or PUT request received via MHD. For
418 * GET, queue response that will send back our pending
419 * messages. For PUT, process incoming data and send
420 * to GNUnet core. In either case, check if a session
421 * already exists and create a new one if not.
424 accessHandlerCallback (void *cls,
425 struct MHD_Connection *session,
429 const char *upload_data,
430 size_t * upload_data_size, void **httpSessionCache)
432 struct MHD_Response *response;
434 struct Session * cs_temp;
435 const union MHD_ConnectionInfo * conn_info;
436 struct sockaddr_in *addrin;
437 struct sockaddr_in6 *addrin6;
438 char address[INET6_ADDRSTRLEN+14];
439 struct GNUNET_PeerIdentity pi_in;
441 struct GNUNET_MessageHeader *cur_msg;
442 int send_error_to_client;
446 send_error_to_client = GNUNET_NO;
448 if ( NULL == *httpSessionCache)
450 /* check url for peer identity */
451 res = GNUNET_CRYPTO_hash_from_string ( &url[1], &(pi_in.hashPubKey));
452 if ( GNUNET_SYSERR == res )
454 response = MHD_create_response_from_data (strlen (HTTP_ERROR_RESPONSE),HTTP_ERROR_RESPONSE, MHD_NO, MHD_NO);
455 res = MHD_queue_response (session, MHD_HTTP_NOT_FOUND, response);
456 MHD_destroy_response (response);
458 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Peer has no valid ident, sent HTTP 1.1/404\n");
460 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Peer has no valid ident, could not send error\n");
464 conn_info = MHD_get_connection_info(session, MHD_CONNECTION_INFO_CLIENT_ADDRESS );
465 /* Incoming IPv4 connection */
466 if ( AF_INET == conn_info->client_addr->sin_family)
468 addrin = conn_info->client_addr;
469 inet_ntop(addrin->sin_family, &(addrin->sin_addr),address,INET_ADDRSTRLEN);
471 /* Incoming IPv6 connection */
472 if ( AF_INET6 == conn_info->client_addr->sin_family)
474 addrin6 = (struct sockaddr_in6 *) conn_info->client_addr;
475 inet_ntop(addrin6->sin6_family, &(addrin6->sin6_addr),address,INET6_ADDRSTRLEN);
477 /* find existing session for address */
479 if (plugin->session_count > 0)
481 cs = plugin->sessions;
485 /* Comparison based on ip address */
486 // res = (0 == memcmp(&(conn_info->client_addr->sin_addr),&(cs->addr->sin_addr), sizeof (struct in_addr))) ? GNUNET_YES : GNUNET_NO;
488 /* Comparison based on ip address, port number and address family */
489 // res = (0 == memcmp((conn_info->client_addr),(cs->addr), sizeof (struct sockaddr_in))) ? GNUNET_YES : GNUNET_NO;
491 /* Comparison based on PeerIdentity */
492 res = (0 == memcmp(&pi_in,&(cs->sender), sizeof (struct GNUNET_PeerIdentity))) ? GNUNET_YES : GNUNET_NO;
494 if ( GNUNET_YES == res)
496 /* existing session for this address found */
497 /*GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Session for peer `%s' found\n",GNUNET_i2s(&cs->sender));*/
503 /* no existing session, create a new one*/
506 /* create new session object */
507 cs = create_session(conn_info->client_addr, NULL, &pi_in);
509 /* Insert session into linked list */
510 if ( plugin->sessions == NULL)
512 plugin->sessions = cs;
513 plugin->session_count = 1;
515 cs_temp = plugin->sessions;
516 while ( cs_temp->next != NULL )
518 cs_temp = cs_temp->next;
523 plugin->session_count++;
525 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"New Session `%s' inserted, count %u \n", GNUNET_i2s(&cs->sender), plugin->session_count);
529 if (*httpSessionCache == NULL)
531 *httpSessionCache = cs;
532 /* Updating session */
533 memcpy(cs->addr_inbound,conn_info->client_addr, sizeof(struct sockaddr_in));
535 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"HTTP Daemon has new an incoming `%s' request from peer `%s' (`[%s]:%u')\n",method, GNUNET_i2s(&cs->sender),address,ntohs(cs->addr_inbound->sin_port));
539 cs = *httpSessionCache;
541 /* Is it a PUT or a GET request */
542 if ( 0 == strcmp (MHD_HTTP_METHOD_PUT, method) )
545 if ((*upload_data_size == 0) && (cs->is_put_in_progress == GNUNET_NO))
547 if (cs->pending_inbound_msg->pos !=0 )
549 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
550 _("Incoming message from peer `%s', while existing message with %u bytes was not forwarded to transport'\n"),
551 GNUNET_i2s(&cs->sender), cs->pending_inbound_msg->pos);
552 cs->pending_inbound_msg->pos = 0;
555 cs->is_put_in_progress = GNUNET_YES;
556 cs->is_bad_request = GNUNET_NO;
557 cs->is_active = GNUNET_YES;
561 if ((*upload_data_size > 0) && (cs->is_bad_request != GNUNET_YES))
563 if ((*upload_data_size + cs->pending_inbound_msg->pos < cs->pending_inbound_msg->len) && (*upload_data_size + cs->pending_inbound_msg->pos <= GNUNET_SERVER_MAX_MESSAGE_SIZE))
565 /* copy uploaded data to buffer */
566 memcpy(&cs->pending_inbound_msg->buf[cs->pending_inbound_msg->pos],upload_data,*upload_data_size);
567 cs->pending_inbound_msg->pos += *upload_data_size;
568 *upload_data_size = 0;
573 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->pos);
574 cs->is_bad_request = GNUNET_YES;
575 /* (*upload_data_size) bytes not processed */
580 if ((cs->is_put_in_progress == GNUNET_YES) && (cs->is_bad_request == GNUNET_YES))
582 *upload_data_size = 0;
583 response = MHD_create_response_from_data (strlen (HTTP_PUT_RESPONSE),HTTP_PUT_RESPONSE, MHD_NO, MHD_NO);
584 res = MHD_queue_response (session, MHD_HTTP_REQUEST_ENTITY_TOO_LARGE, response);
587 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Sent HTTP/1.1: 413 Request Entity Too Large as PUT Response\n");
588 cs->is_bad_request = GNUNET_NO;
589 cs->is_put_in_progress =GNUNET_NO;
590 cs->pending_inbound_msg->pos = 0;
592 MHD_destroy_response (response);
596 if ((*upload_data_size == 0) && (cs->is_put_in_progress == GNUNET_YES) && (cs->is_bad_request == GNUNET_NO))
598 send_error_to_client = GNUNET_YES;
600 /* split and check messages and forward here */
603 if (cs->pending_inbound_msg->pos >= sizeof (struct GNUNET_MessageHeader))
605 cur_msg = (struct GNUNET_MessageHeader *) cs->pending_inbound_msg->buf;
606 unsigned int len = ntohs (cur_msg->size);
608 if (len == cs->pending_inbound_msg->pos)
611 /* one message in recieved data, can pass directly*/
612 if ( AF_INET == cs->addr_inbound->sin_family)
614 inet_ntop(AF_INET, &(cs->addr_inbound)->sin_addr,address,INET_ADDRSTRLEN);
615 GNUNET_asprintf(&tmp,"%s:%u",address,ntohs(cs->addr_inbound->sin_port));
618 if ( AF_INET6 == cs->addr_inbound->sin_family)
620 inet_ntop(AF_INET6, &((struct sockaddr_in6 *) cs->addr_inbound)->sin6_addr,address,INET6_ADDRSTRLEN);
621 GNUNET_asprintf(&tmp,"[%s]:%u",address,ntohs(cs->addr_inbound->sin_port));
624 plugin->env->receive(plugin->env->cls, &(cs->sender), cur_msg, 1, NULL , tmp, strlen(tmp));
625 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Forwarded 1 message with %u bytes of data to transport service\n", cs->pending_inbound_msg->pos);
627 send_error_to_client = GNUNET_NO;
629 if (len < cs->pending_inbound_msg->pos)
631 /* more than one message in recieved data, have to split up*/
633 unsigned int bytes_proc = 0;
634 unsigned int c_msgs = 0;
636 /* one message in recieved data, can pass directly*/
637 if ( AF_INET == cs->addr_inbound->sin_family)
639 inet_ntop(AF_INET, &(cs->addr_inbound)->sin_addr,address,INET_ADDRSTRLEN);
640 GNUNET_asprintf(&tmp,"%s:%u",address,ntohs(cs->addr_inbound->sin_port));
643 if ( AF_INET6 == cs->addr_inbound->sin_family)
645 inet_ntop(AF_INET6, &((struct sockaddr_in6 *) cs->addr_inbound)->sin6_addr,address,INET6_ADDRSTRLEN);
646 GNUNET_asprintf(&tmp,"[%s]:%u",address,ntohs(cs->addr_inbound->sin_port));
649 send_error_to_client = GNUNET_NO;
650 while (bytes_proc < cs->pending_inbound_msg->pos)
652 cur_msg = (struct GNUNET_MessageHeader *) &cs->pending_inbound_msg->buf[bytes_proc];
653 len = ntohs (cur_msg->size);
654 if ((bytes_proc+len) <=cs->pending_inbound_msg->pos)
656 plugin->env->receive(plugin->env->cls, &(cs->sender), cur_msg, 1, NULL , tmp, strlen(tmp));
657 bytes_proc += ntohs(cur_msg->size);
662 send_error_to_client = GNUNET_YES;
666 if (send_error_to_client == GNUNET_NO)
667 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Forwarded %u messages with %u bytes of data to transport service\n",
670 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,"Forwarded %u messages with %u bytes, last msg was inconsistent, %u bytes left\n",
671 c_msgs, bytes_proc,cs->pending_inbound_msg->pos-bytes_proc);
674 if (len > cs->pending_inbound_msg->pos)
676 /* message size bigger than data recieved -> malformed */
677 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Recieved malformed message: size in header %u bytes, recieved: %u \n", len, cs->pending_inbound_msg->pos);
681 if (send_error_to_client == GNUNET_NO)
683 response = MHD_create_response_from_data (strlen (HTTP_PUT_RESPONSE),HTTP_PUT_RESPONSE, MHD_NO, MHD_NO);
684 res = MHD_queue_response (session, MHD_HTTP_OK, response);
685 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Sent HTTP/1.1: 200 OK as PUT Response\n",HTTP_PUT_RESPONSE, strlen (HTTP_PUT_RESPONSE), res );
686 MHD_destroy_response (response);
690 response = MHD_create_response_from_data (strlen (HTTP_PUT_RESPONSE),HTTP_PUT_RESPONSE, MHD_NO, MHD_NO);
691 res = MHD_queue_response (session, MHD_HTTP_BAD_REQUEST, response);
692 MHD_destroy_response (response);
693 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Sent HTTP/1.1: 400 BAD REQUEST as PUT Response\n");
696 //GNUNET_free_non_null (cur_msg);
697 cs->is_put_in_progress = GNUNET_NO;
698 cs->is_bad_request = GNUNET_NO;
699 cs->pending_inbound_msg->pos = 0;
703 if ( 0 == strcmp (MHD_HTTP_METHOD_GET, method) )
705 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Got GET Request\n");
706 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"URL: `%s'\n",url);
707 response = MHD_create_response_from_data (strlen (HTTP_PUT_RESPONSE),HTTP_PUT_RESPONSE, MHD_NO, MHD_NO);
708 res = MHD_queue_response (session, MHD_HTTP_OK, response);
709 MHD_destroy_response (response);
717 * Call MHD to process pending requests and then go back
718 * and schedule the next run.
720 static void http_daemon_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
723 * Function that queries MHD's select sets and
724 * starts the task waiting for them.
726 static GNUNET_SCHEDULER_TaskIdentifier
727 http_daemon_prepare (struct MHD_Daemon *daemon_handle)
729 GNUNET_SCHEDULER_TaskIdentifier ret;
733 struct GNUNET_NETWORK_FDSet *wrs;
734 struct GNUNET_NETWORK_FDSet *wws;
735 struct GNUNET_NETWORK_FDSet *wes;
737 unsigned long long timeout;
739 struct GNUNET_TIME_Relative tv;
744 wrs = GNUNET_NETWORK_fdset_create ();
745 wes = GNUNET_NETWORK_fdset_create ();
746 wws = GNUNET_NETWORK_fdset_create ();
748 GNUNET_assert (MHD_YES ==
749 MHD_get_fdset (daemon_handle,
754 haveto = MHD_get_timeout (daemon_handle, &timeout);
755 if (haveto == MHD_YES)
756 tv.value = (uint64_t) timeout;
758 tv = GNUNET_TIME_UNIT_FOREVER_REL;
759 GNUNET_NETWORK_fdset_copy_native (wrs, &rs, max);
760 GNUNET_NETWORK_fdset_copy_native (wws, &ws, max);
761 GNUNET_NETWORK_fdset_copy_native (wes, &es, max);
762 ret = GNUNET_SCHEDULER_add_select (plugin->env->sched,
763 GNUNET_SCHEDULER_PRIORITY_DEFAULT,
764 GNUNET_SCHEDULER_NO_TASK,
770 GNUNET_NETWORK_fdset_destroy (wrs);
771 GNUNET_NETWORK_fdset_destroy (wws);
772 GNUNET_NETWORK_fdset_destroy (wes);
777 * Call MHD to process pending requests and then go back
778 * and schedule the next run.
780 static void http_daemon_run (void *cls,
781 const struct GNUNET_SCHEDULER_TaskContext *tc)
783 struct MHD_Daemon *daemon_handle = cls;
785 if (daemon_handle == http_daemon_v4)
786 http_task_v4 = GNUNET_SCHEDULER_NO_TASK;
788 if (daemon_handle == http_daemon_v6)
789 http_task_v6 = GNUNET_SCHEDULER_NO_TASK;
791 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
794 GNUNET_assert (MHD_YES == MHD_run (daemon_handle));
795 if (daemon_handle == http_daemon_v4)
796 http_task_v4 = http_daemon_prepare (daemon_handle);
797 if (daemon_handle == http_daemon_v6)
798 http_task_v6 = http_daemon_prepare (daemon_handle);
803 * Removes a message from the linked list of messages
804 * @param ses session to remove message from
805 * @param msg message to remove
806 * @return GNUNET_SYSERR if msg not found, GNUNET_OK on success
809 static int remove_http_message(struct Session * ses, struct HTTP_Message * msg)
811 struct HTTP_Message * cur;
812 struct HTTP_Message * next;
814 cur = ses->pending_outbound_msg;
818 return GNUNET_SYSERR;
822 ses->pending_outbound_msg = cur->next;
823 GNUNET_free (cur->buf);
824 GNUNET_free (cur->dest_url);
830 while (cur->next!=msg)
832 if (cur->next != NULL)
835 return GNUNET_SYSERR;
838 cur->next = cur->next->next;
839 GNUNET_free (cur->next->buf);
840 GNUNET_free (cur->next->dest_url);
841 GNUNET_free (cur->next);
847 static size_t header_function( void *ptr, size_t size, size_t nmemb, void *stream)
850 size_t len = size * nmemb;
851 struct Session * ses = stream;
854 if ((size * nmemb) < SIZE_MAX)
855 tmp = GNUNET_malloc (len+1);
857 if ((tmp != NULL) && (len > 0))
862 if (tmp[len-2] == 13)
866 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Header: `%s'\n",tmp);
868 if (0==strcmp (tmp,"HTTP/1.1 100 Continue"))
870 ses->pending_outbound_msg->http_result_code=100;
872 if (0==strcmp (tmp,"HTTP/1.1 200 OK"))
874 ses->pending_outbound_msg->http_result_code=200;
876 if (0==strcmp (tmp,"HTTP/1.1 400 Bad Request"))
878 ses->pending_outbound_msg->http_result_code=400;
880 if (0==strcmp (tmp,"HTTP/1.1 404 Not Found"))
882 ses->pending_outbound_msg->http_result_code=404;
884 if (0==strcmp (tmp,"HTTP/1.1 413 Request Entity Too Large"))
886 ses->pending_outbound_msg->http_result_code=413;
896 * Callback method used with libcurl
897 * Method is called when libcurl needs to read data during sending
898 * @param stream pointer where to write data
899 * @param size size of an individual element
900 * @param nmemb count of elements that can be written to the buffer
901 * @param ptr source pointer, passed to the libcurl handle
902 * @return bytes written to stream
904 static size_t send_read_callback(void *stream, size_t size, size_t nmemb, void *ptr)
906 struct Session * ses = ptr;
907 struct HTTP_Message * msg = ses->pending_outbound_msg;
912 if (( msg->pos < msg->len))
914 /* data fit in buffer */
915 if ((msg->len - msg->pos) <= (size * nmemb))
917 len = (msg->len - msg->pos);
918 memcpy(stream, &msg->buf[msg->pos], len);
925 memcpy(stream, &msg->buf[msg->pos], len);
930 /* no data to send */
939 * Callback method used with libcurl
940 * Method is called when libcurl needs to write data during sending
941 * @param stream pointer where to write data
942 * @param size size of an individual element
943 * @param nmemb count of elements that can be written to the buffer
944 * @param ptr destination pointer, passed to the libcurl handle
945 * @return bytes read from stream
947 static size_t send_write_callback( void *stream, size_t size, size_t nmemb, void *ptr)
951 if ((size * nmemb) < SIZE_MAX)
952 data = GNUNET_malloc(size*nmemb +1);
955 memcpy( data, stream, size*nmemb);
956 data[size*nmemb] = '\0';
959 return (size * nmemb);
964 * Function setting up file descriptors and scheduling task to run
965 * @param ses session to send data to
966 * @return bytes sent to peer
968 static size_t send_prepare(struct Session* ses );
971 * Function setting up curl handle and selecting message to send
972 * @param ses session to send data to
973 * @return bytes sent to peer
975 static ssize_t send_select_init (struct Session* ses )
979 struct HTTP_Message * msg;
981 if ( NULL == ses->curl_handle)
982 ses->curl_handle = curl_easy_init();
983 if( NULL == ses->curl_handle)
985 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Getting cURL handle failed\n");
988 msg = ses->pending_outbound_msg;
993 curl_easy_setopt(ses->curl_handle, CURLOPT_VERBOSE, 1L);
995 curl_easy_setopt(ses->curl_handle, CURLOPT_URL, msg->dest_url);
996 curl_easy_setopt(ses->curl_handle, CURLOPT_PUT, 1L);
997 curl_easy_setopt(ses->curl_handle, CURLOPT_HEADERFUNCTION, &header_function);
998 curl_easy_setopt(ses->curl_handle, CURLOPT_WRITEHEADER, ses);
999 curl_easy_setopt(ses->curl_handle, CURLOPT_READFUNCTION, send_read_callback);
1000 curl_easy_setopt(ses->curl_handle, CURLOPT_READDATA, ses);
1001 curl_easy_setopt(ses->curl_handle, CURLOPT_WRITEFUNCTION, send_write_callback);
1002 curl_easy_setopt(ses->curl_handle, CURLOPT_READDATA, ses);
1003 curl_easy_setopt(ses->curl_handle, CURLOPT_INFILESIZE_LARGE, (curl_off_t) msg->len);
1004 curl_easy_setopt(ses->curl_handle, CURLOPT_TIMEOUT, (long) (timeout.value / 1000 ));
1005 curl_easy_setopt(ses->curl_handle, CURLOPT_CONNECTTIMEOUT, HTTP_CONNECT_TIMEOUT);
1006 curl_easy_setopt(ses->curl_handle, CURLOPT_BUFFERSIZE, GNUNET_SERVER_MAX_MESSAGE_SIZE);
1008 mret = curl_multi_add_handle(multi_handle, ses->curl_handle);
1009 if (mret != CURLM_OK)
1011 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1012 _("%s failed at %s:%d: `%s'\n"),
1013 "curl_multi_add_handle", __FILE__, __LINE__,
1014 curl_multi_strerror (mret));
1017 bytes_sent = send_prepare (ses );
1021 static void send_execute (void *cls,
1022 const struct GNUNET_SCHEDULER_TaskContext *tc)
1024 static unsigned int handles_last_run;
1026 struct CURLMsg *msg;
1028 struct Session * cs = NULL;
1030 http_task_send = GNUNET_SCHEDULER_NO_TASK;
1031 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
1037 mret = curl_multi_perform (multi_handle, &running);
1038 if (running < handles_last_run)
1043 msg = curl_multi_info_read (multi_handle, &running);
1044 GNUNET_break (msg != NULL);
1047 /* get session for affected curl handle */
1048 GNUNET_assert ( msg->easy_handle != NULL );
1049 cs = find_session_by_curlhandle (msg->easy_handle);
1050 GNUNET_assert ( cs != NULL );
1051 GNUNET_assert ( cs->pending_outbound_msg != NULL );
1056 if ( (msg->data.result != CURLE_OK) &&
1057 (msg->data.result != CURLE_GOT_NOTHING) )
1060 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
1061 _("%s failed for `%s' at %s:%d: `%s'\n"),
1062 "curl_multi_perform",
1063 GNUNET_i2s(&cs->sender),
1066 curl_easy_strerror (msg->data.result));
1067 /* sending msg failed*/
1068 if (( NULL != cs->pending_outbound_msg) && ( NULL != cs->pending_outbound_msg->transmit_cont))
1069 cs->pending_outbound_msg->transmit_cont (cs->pending_outbound_msg->transmit_cont_cls,&cs->sender,GNUNET_SYSERR);
1074 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1075 "Send to peer `%s' completed with code %u\n", GNUNET_i2s(&cs->sender),cs->pending_outbound_msg->http_result_code);
1077 curl_easy_cleanup(cs->curl_handle);
1078 cs->curl_handle=NULL;
1080 /* Calling transmit continuation */
1081 if (( NULL != cs->pending_outbound_msg) && (NULL != cs->pending_outbound_msg->transmit_cont))
1083 /* HTTP 1xx : Last message before here was informational */
1084 if ((cs->pending_outbound_msg->http_result_code >=100) && (cs->pending_outbound_msg->http_result_code < 200))
1085 cs->pending_outbound_msg->transmit_cont (cs->pending_outbound_msg->transmit_cont_cls,&cs->sender,GNUNET_OK);
1086 /* HTTP 2xx: successful operations */
1087 if ((cs->pending_outbound_msg->http_result_code >=200) && (cs->pending_outbound_msg->http_result_code < 300))
1088 cs->pending_outbound_msg->transmit_cont (cs->pending_outbound_msg->transmit_cont_cls,&cs->sender,GNUNET_OK);
1089 /* HTTP 3xx..5xx: error */
1090 if ((cs->pending_outbound_msg->http_result_code >=300) && (cs->pending_outbound_msg->http_result_code < 600))
1091 cs->pending_outbound_msg->transmit_cont (cs->pending_outbound_msg->transmit_cont_cls,&cs->sender,GNUNET_SYSERR);
1093 if (GNUNET_OK != remove_http_message(cs, cs->pending_outbound_msg))
1094 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Message could not be removed from session `%s'", GNUNET_i2s(&cs->sender));
1096 /* send pending messages */
1097 if (cs->pending_outbound_msg != NULL)
1099 send_select_init (cs);
1108 while ( (running > 0) );
1110 handles_last_run = running;
1112 while (mret == CURLM_CALL_MULTI_PERFORM);
1118 * Function setting up file descriptors and scheduling task to run
1119 * @param ses session to send data to
1120 * @return bytes sent to peer
1122 static size_t send_prepare(struct Session* ses )
1128 struct GNUNET_NETWORK_FDSet *grs;
1129 struct GNUNET_NETWORK_FDSet *gws;
1137 mret = curl_multi_fdset (multi_handle, &rs, &ws, &es, &max);
1138 if (mret != CURLM_OK)
1140 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1141 _("%s failed at %s:%d: `%s'\n"),
1142 "curl_multi_fdset", __FILE__, __LINE__,
1143 curl_multi_strerror (mret));
1146 mret = curl_multi_timeout (multi_handle, &to);
1147 if (mret != CURLM_OK)
1149 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1150 _("%s failed at %s:%d: `%s'\n"),
1151 "curl_multi_timeout", __FILE__, __LINE__,
1152 curl_multi_strerror (mret));
1156 grs = GNUNET_NETWORK_fdset_create ();
1157 gws = GNUNET_NETWORK_fdset_create ();
1158 GNUNET_NETWORK_fdset_copy_native (grs, &rs, max + 1);
1159 GNUNET_NETWORK_fdset_copy_native (gws, &ws, max + 1);
1160 http_task_send = GNUNET_SCHEDULER_add_select (plugin->env->sched,
1161 GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1162 GNUNET_SCHEDULER_NO_TASK,
1163 GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 0),
1168 GNUNET_NETWORK_fdset_destroy (gws);
1169 GNUNET_NETWORK_fdset_destroy (grs);
1171 /* FIXME: return bytes REALLY sent */
1176 * Function that can be used by the transport service to transmit
1177 * a message using the plugin.
1179 * @param cls closure
1180 * @param target who should receive this message
1181 * @param priority how important is the message
1182 * @param msgbuf the message to transmit
1183 * @param msgbuf_size number of bytes in 'msgbuf'
1184 * @param to when should we time out
1185 * @param session which session must be used (or NULL for "any")
1186 * @param addr the address to use (can be NULL if the plugin
1187 * is "on its own" (i.e. re-use existing TCP connection))
1188 * @param addrlen length of the address in bytes
1189 * @param force_address GNUNET_YES if the plugin MUST use the given address,
1190 * otherwise the plugin may use other addresses or
1191 * existing connections (if available)
1192 * @param cont continuation to call once the message has
1193 * been transmitted (or if the transport is ready
1194 * for the next transmission call; or if the
1195 * peer disconnected...)
1196 * @param cont_cls closure for cont
1197 * @return number of bytes used (on the physical network, with overheads);
1198 * -1 on hard errors (i.e. address invalid); 0 is a legal value
1199 * and does NOT mean that the message was not transmitted (DV)
1202 http_plugin_send (void *cls,
1203 const struct GNUNET_PeerIdentity *target,
1206 unsigned int priority,
1207 struct GNUNET_TIME_Relative to,
1208 struct Session *session,
1212 GNUNET_TRANSPORT_TransmitContinuation cont,
1217 struct Session* ses;
1218 struct Session* ses_temp;
1219 struct HTTP_Message * msg;
1220 struct HTTP_Message * tmp;
1225 /* find session for peer */
1226 ses = find_session_by_pi (target);
1227 /* if (NULL != ses ) GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Existing session for peer `%s' found\n", GNUNET_i2s(target));*/
1230 /* create new session object */
1232 ses = create_session(NULL, (struct sockaddr_in *) addr, target);
1233 ses->is_active = GNUNET_YES;
1235 /* Insert session into linked list */
1236 if ( plugin->sessions == NULL)
1238 plugin->sessions = ses;
1239 plugin->session_count = 1;
1241 ses_temp = plugin->sessions;
1242 while ( ses_temp->next != NULL )
1244 ses_temp = ses_temp->next;
1246 if (ses_temp != ses )
1248 ses_temp->next = ses;
1249 plugin->session_count++;
1251 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1252 "New Session `%s' inserted, count %u\n", GNUNET_i2s(target), plugin->session_count);
1255 GNUNET_assert (addr!=NULL);
1258 /* setting url to send to */
1259 if (force_address == GNUNET_YES)
1261 if (addrlen == (sizeof (struct IPv4HttpAddress)))
1263 address = GNUNET_malloc(INET_ADDRSTRLEN + 1);
1264 inet_ntop(AF_INET, &((struct IPv4HttpAddress *) addr)->ipv4_addr,address,INET_ADDRSTRLEN);
1265 port = ntohs(((struct IPv4HttpAddress *) addr)->u_port);
1266 GNUNET_asprintf (&url,
1270 (char *) (&my_ascii_hash_ident));
1271 GNUNET_free(address);
1273 else if (addrlen == (sizeof (struct IPv6HttpAddress)))
1275 address = GNUNET_malloc(INET6_ADDRSTRLEN + 1);
1276 inet_ntop(AF_INET6, &((struct IPv6HttpAddress *) addr)->ipv6_addr,address,INET6_ADDRSTRLEN);
1277 port = ntohs(((struct IPv6HttpAddress *) addr)->u6_port);
1278 GNUNET_asprintf(&url,
1280 address,port,(char *) (&my_ascii_hash_ident));
1281 GNUNET_free(address);
1285 /* setting up message */
1286 msg = GNUNET_malloc (sizeof (struct HTTP_Message));
1288 msg->len = msgbuf_size;
1290 msg->buf = GNUNET_malloc (msgbuf_size);
1291 msg->dest_url = url;
1292 msg->transmit_cont = cont;
1293 msg->transmit_cont_cls = cont_cls;
1294 memcpy (msg->buf,msgbuf, msgbuf_size);
1296 /* insert created message in list of pending messages */
1297 if (ses->pending_outbound_msg == NULL)
1299 ses->pending_outbound_msg = msg;
1301 tmp = ses->pending_outbound_msg;
1302 while ( NULL != tmp->next)
1311 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"HTTP Plugin: sending %u bytes of data from peer `%s' to peer `%s'\n",msgbuf_size,GNUNET_i2s(plugin->env->my_identity),GNUNET_i2s(&ses->sender));
1312 if (msg == ses->pending_outbound_msg)
1314 bytes_sent = send_select_init (ses);
1323 * Function that can be used to force the plugin to disconnect
1324 * from the given peer and cancel all previous transmissions
1325 * (and their continuationc).
1327 * @param cls closure
1328 * @param target peer from which to disconnect
1331 http_plugin_disconnect (void *cls,
1332 const struct GNUNET_PeerIdentity *target)
1334 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"HTTP Plugin: http_plugin_disconnect\n");
1335 // struct Plugin *plugin = cls;
1341 * Convert the transports address to a nice, human-readable
1344 * @param cls closure
1345 * @param type name of the transport that generated the address
1346 * @param addr one of the addresses of the host, NULL for the last address
1347 * the specific address format depends on the transport
1348 * @param addrlen length of the address
1349 * @param numeric should (IP) addresses be displayed in numeric form?
1350 * @param timeout after how long should we give up?
1351 * @param asc function to call on each string
1352 * @param asc_cls closure for asc
1355 http_plugin_address_pretty_printer (void *cls,
1360 struct GNUNET_TIME_Relative timeout,
1361 GNUNET_TRANSPORT_AddressStringCallback
1364 const struct IPv4HttpAddress *t4;
1365 const struct IPv6HttpAddress *t6;
1366 struct sockaddr_in a4;
1367 struct sockaddr_in6 a6;
1373 if (addrlen == sizeof (struct IPv6HttpAddress))
1375 address = GNUNET_malloc (INET6_ADDRSTRLEN);
1377 a6.sin6_addr = t6->ipv6_addr;
1378 inet_ntop(AF_INET6, &(a6.sin6_addr),address,INET6_ADDRSTRLEN);
1379 port = ntohs(t6->u6_port);
1381 else if (addrlen == sizeof (struct IPv4HttpAddress))
1383 address = GNUNET_malloc (INET_ADDRSTRLEN);
1385 a4.sin_addr.s_addr = t4->ipv4_addr;
1386 inet_ntop(AF_INET, &(a4.sin_addr),address,INET_ADDRSTRLEN);
1387 port = ntohs(t4->u_port);
1391 /* invalid address */
1392 GNUNET_break_op (0);
1393 asc (asc_cls, NULL);
1396 res = GNUNET_asprintf(&ret,"http://%s:%u/",address,port);
1397 GNUNET_free (address);
1398 GNUNET_assert(res != 0);
1406 * Another peer has suggested an address for this
1407 * peer and transport plugin. Check that this could be a valid
1408 * address. If so, consider adding it to the list
1411 * @param cls closure
1412 * @param addr pointer to the address
1413 * @param addrlen length of addr
1414 * @return GNUNET_OK if this is a plausible address for this peer
1418 http_plugin_address_suggested (void *cls,
1419 void *addr, size_t addrlen)
1421 struct IPv4HttpAddress *v4;
1422 struct IPv6HttpAddress *v6;
1425 if ((addrlen != sizeof (struct IPv4HttpAddress)) &&
1426 (addrlen != sizeof (struct IPv6HttpAddress)))
1428 return GNUNET_SYSERR;
1430 if (addrlen == sizeof (struct IPv4HttpAddress))
1432 v4 = (struct IPv4HttpAddress *) addr;
1433 if (INADDR_LOOPBACK == ntohl(v4->ipv4_addr))
1435 return GNUNET_SYSERR;
1437 port = ntohs (v4->u_port);
1438 if (port != plugin->port_inbound)
1440 return GNUNET_SYSERR;
1445 v6 = (struct IPv6HttpAddress *) addr;
1446 if (IN6_IS_ADDR_LINKLOCAL (&v6->ipv6_addr))
1448 return GNUNET_SYSERR;
1450 port = ntohs (v6->u6_port);
1451 if (port != plugin->port_inbound)
1453 return GNUNET_SYSERR;
1463 * Function called for a quick conversion of the binary address to
1464 * a numeric address. Note that the caller must not free the
1465 * address and that the next call to this function is allowed
1466 * to override the address again.
1468 * @param cls closure
1469 * @param addr binary address
1470 * @param addrlen length of the address
1471 * @return string representing the same address
1474 http_plugin_address_to_string (void *cls,
1478 const struct IPv4HttpAddress *t4;
1479 const struct IPv6HttpAddress *t6;
1480 struct sockaddr_in a4;
1481 struct sockaddr_in6 a6;
1487 if (addrlen == sizeof (struct IPv6HttpAddress))
1489 address = GNUNET_malloc (INET6_ADDRSTRLEN);
1491 a6.sin6_addr = t6->ipv6_addr;
1492 inet_ntop(AF_INET6, &(a6.sin6_addr),address,INET6_ADDRSTRLEN);
1493 port = ntohs(t6->u6_port);
1495 else if (addrlen == sizeof (struct IPv4HttpAddress))
1497 address = GNUNET_malloc (INET_ADDRSTRLEN);
1499 a4.sin_addr.s_addr = t4->ipv4_addr;
1500 inet_ntop(AF_INET, &(a4.sin_addr),address,INET_ADDRSTRLEN);
1501 port = ntohs(t4->u_port);
1505 /* invalid address */
1508 res = GNUNET_asprintf(&ret,"%s:%u",address,port);
1509 GNUNET_free (address);
1510 GNUNET_assert(res != 0);
1515 * Add the IP of our network interface to the list of
1516 * our external IP addresses.
1518 * @param cls the 'struct Plugin*'
1519 * @param name name of the interface
1520 * @param isDefault do we think this may be our default interface
1521 * @param addr address of the interface
1522 * @param addrlen number of bytes in addr
1523 * @return GNUNET_OK to continue iterating
1526 process_interfaces (void *cls,
1529 const struct sockaddr *addr, socklen_t addrlen)
1531 struct IPv4HttpAddress t4;
1532 struct IPv6HttpAddress t6;
1537 af = addr->sa_family;
1540 if (INADDR_LOOPBACK == ntohl(((struct sockaddr_in *) addr)->sin_addr.s_addr))
1542 /* skip loopback addresses */
1545 t4.ipv4_addr = ((struct sockaddr_in *) addr)->sin_addr.s_addr;
1546 t4.u_port = htons (plugin->port_inbound);
1550 else if (af == AF_INET6)
1552 if (IN6_IS_ADDR_LINKLOCAL (&((struct sockaddr_in6 *) addr)->sin6_addr))
1554 /* skip link local addresses */
1557 if (IN6_IS_ADDR_LOOPBACK (&((struct sockaddr_in6 *) addr)->sin6_addr))
1559 /* skip loopback addresses */
1562 memcpy (&t6.ipv6_addr,
1563 &((struct sockaddr_in6 *) addr)->sin6_addr,
1564 sizeof (struct in6_addr));
1565 t6.u6_port = htons (plugin->port_inbound);
1574 plugin->env->notify_address(plugin->env->cls,"http",arg, args, GNUNET_TIME_UNIT_FOREVER_REL);
1579 * Exit point from the plugin.
1582 libgnunet_plugin_transport_http_done (void *cls)
1584 struct GNUNET_TRANSPORT_PluginFunctions *api = cls;
1585 struct Plugin *plugin = api->cls;
1586 struct Session * cs;
1587 struct Session * cs_next;
1590 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Unloading http plugin...\n");
1592 if ( http_task_v4 != GNUNET_SCHEDULER_NO_TASK)
1594 GNUNET_SCHEDULER_cancel(plugin->env->sched, http_task_v4);
1595 http_task_v4 = GNUNET_SCHEDULER_NO_TASK;
1598 if ( http_task_v6 != GNUNET_SCHEDULER_NO_TASK)
1600 GNUNET_SCHEDULER_cancel(plugin->env->sched, http_task_v6);
1601 http_task_v6 = GNUNET_SCHEDULER_NO_TASK;
1604 if ( http_task_send != GNUNET_SCHEDULER_NO_TASK)
1606 GNUNET_SCHEDULER_cancel(plugin->env->sched, http_task_send);
1607 http_task_send = GNUNET_SCHEDULER_NO_TASK;
1610 if (http_daemon_v4 != NULL)
1612 MHD_stop_daemon (http_daemon_v4);
1613 http_daemon_v4 = NULL;
1615 if (http_daemon_v6 != NULL)
1617 MHD_stop_daemon (http_daemon_v6);
1618 http_daemon_v6 = NULL;
1621 /* free all sessions */
1622 cs = plugin->sessions;
1626 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Freeing session for peer `%s'\n",GNUNET_i2s(&cs->sender));
1630 /* freeing messages */
1631 struct HTTP_Message *cur;
1632 struct HTTP_Message *tmp;
1633 cur = cs->pending_outbound_msg;
1638 if (NULL != cur->buf)
1639 GNUNET_free (cur->buf);
1643 GNUNET_free (cs->pending_inbound_msg->buf);
1644 GNUNET_free (cs->pending_inbound_msg);
1645 GNUNET_free_non_null (cs->addr_inbound);
1646 GNUNET_free_non_null (cs->addr_outbound);
1649 plugin->session_count--;
1653 mret = curl_multi_cleanup(multi_handle);
1654 if ( CURLM_OK != mret)
1655 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"curl multihandle clean up failed");
1657 GNUNET_free (plugin);
1664 * Entry point for the plugin.
1667 libgnunet_plugin_transport_http_init (void *cls)
1669 struct GNUNET_TRANSPORT_PluginEnvironment *env = cls;
1670 struct GNUNET_TRANSPORT_PluginFunctions *api;
1671 unsigned int timeout;
1672 struct GNUNET_TIME_Relative gn_timeout;
1673 long long unsigned int port;
1675 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting http plugin...\n");
1677 plugin = GNUNET_malloc (sizeof (struct Plugin));
1679 plugin->sessions = NULL;
1680 api = GNUNET_malloc (sizeof (struct GNUNET_TRANSPORT_PluginFunctions));
1682 api->send = &http_plugin_send;
1683 api->disconnect = &http_plugin_disconnect;
1684 api->address_pretty_printer = &http_plugin_address_pretty_printer;
1685 api->check_address = &http_plugin_address_suggested;
1686 api->address_to_string = &http_plugin_address_to_string;
1688 /* Hashing our identity to use it in URLs */
1689 GNUNET_CRYPTO_hash_to_enc ( &(plugin->env->my_identity->hashPubKey), &my_ascii_hash_ident);
1691 /* Reading port number from config file */
1693 GNUNET_CONFIGURATION_get_value_number (env->cfg,
1699 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
1702 ("Require valid port number for transport plugin `%s' in configuration!\n"),
1704 libgnunet_plugin_transport_http_done (api);
1707 GNUNET_assert ((port > 0) && (port <= 65535));
1708 plugin->port_inbound = port;
1709 gn_timeout = GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT;
1710 timeout = ( gn_timeout.value / 1000);
1711 if ((http_daemon_v4 == NULL) && (http_daemon_v6 == NULL) && (port != 0))
1713 http_daemon_v6 = MHD_start_daemon (MHD_USE_IPv6,
1715 &acceptPolicyCallback,
1716 NULL , &accessHandlerCallback, NULL,
1717 MHD_OPTION_CONNECTION_LIMIT, (unsigned int) 16,
1718 MHD_OPTION_PER_IP_CONNECTION_LIMIT, (unsigned int) 1,
1719 MHD_OPTION_CONNECTION_TIMEOUT, timeout,
1720 /* FIXME: set correct limit */
1721 MHD_OPTION_CONNECTION_MEMORY_LIMIT, (size_t) (16 * 1024),
1722 MHD_OPTION_NOTIFY_COMPLETED, &requestCompletedCallback, NULL,
1724 http_daemon_v4 = MHD_start_daemon (MHD_NO_FLAG,
1726 &acceptPolicyCallback,
1727 NULL , &accessHandlerCallback, NULL,
1728 MHD_OPTION_CONNECTION_LIMIT, (unsigned int) 16,
1729 MHD_OPTION_PER_IP_CONNECTION_LIMIT, (unsigned int) 1,
1730 MHD_OPTION_CONNECTION_TIMEOUT, timeout,
1731 /* FIXME: set correct limit */
1732 MHD_OPTION_CONNECTION_MEMORY_LIMIT, (size_t) (16 * 1024),
1733 MHD_OPTION_NOTIFY_COMPLETED, &requestCompletedCallback, NULL,
1736 if (http_daemon_v4 != NULL)
1737 http_task_v4 = http_daemon_prepare (http_daemon_v4);
1738 if (http_daemon_v6 != NULL)
1739 http_task_v6 = http_daemon_prepare (http_daemon_v6);
1741 if (http_task_v4 != GNUNET_SCHEDULER_NO_TASK)
1742 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting MHD with IPv4 on port %u\n",port);
1743 else if (http_task_v6 != GNUNET_SCHEDULER_NO_TASK)
1744 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting MHD with IPv4 and IPv6 on port %u\n",port);
1747 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"No MHD was started, transport plugin not functional!\n");
1748 libgnunet_plugin_transport_http_done (api);
1752 /* Initializing cURL */
1753 multi_handle = curl_multi_init();
1754 if ( NULL == multi_handle )
1756 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
1758 _("Could not initialize curl multi handle, failed to start http plugin!\n"),
1760 libgnunet_plugin_transport_http_done (api);
1764 GNUNET_OS_network_interfaces_list (&process_interfaces, plugin);
1769 /* end of plugin_transport_template.c */