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;
177 * curl handle for this ransmission
180 struct Session * session;
184 * Session handle for connections.
190 * Stored in a linked list.
192 struct Session *next;
195 * Pointer to the global plugin struct.
197 struct Plugin *plugin;
200 * To whom are we talking to (set to our identity
201 * if we are still waiting for the welcome message)
203 struct GNUNET_PeerIdentity identity;
206 * Sender's ip address to distinguish between incoming connections
208 //struct sockaddr_in * addr_inbound;
211 * Sender's ip address to distinguish between incoming connections
222 * Did we initiate the connection (GNUNET_YES) or the other peer (GNUNET_NO)?
227 * At what time did we reset last_received last?
229 struct GNUNET_TIME_Absolute last_quota_update;
232 * How many bytes have we received since the "last_quota_update"
235 uint64_t last_received;
238 * Number of bytes per ms that this peer is allowed
244 * Is there a HTTP/PUT in progress?
246 int is_put_in_progress;
249 * Is the http request invalid?
256 struct GNUNET_CRYPTO_HashAsciiEncoded hash;
259 * Head of dll used to store outbound messages
261 struct HTTP_Message * pending_outbound_msg_head;
264 * Tail of dll used to store outbound messages
266 struct HTTP_Message * pending_outbound_msg_tail;
271 struct HTTP_inbound_transmission pending_inbound_msg;
274 * curl handle for outbound transmissions
279 * Message tokenizer for incoming data
281 struct GNUNET_SERVER_MessageStreamTokenizer * msgtok;
283 struct HTTP_Connection *outbound_addresses_head;
284 struct HTTP_Connection *outbound_addresses_tail;
288 * Encapsulation of all of the state of the plugin.
295 struct GNUNET_TRANSPORT_PluginEnvironment *env;
297 unsigned int port_inbound;
300 * Hashmap for all existing sessions.
302 struct GNUNET_CONTAINER_MultiHashMap *sessions;
305 * Daemon for listening for new IPv4 connections.
307 struct MHD_Daemon *http_server_daemon_v4;
310 * Daemon for listening for new IPv6connections.
312 struct MHD_Daemon *http_server_daemon_v6;
315 * Our primary task for http daemon handling IPv4 connections
317 GNUNET_SCHEDULER_TaskIdentifier http_server_task_v4;
320 * Our primary task for http daemon handling IPv6 connections
322 GNUNET_SCHEDULER_TaskIdentifier http_server_task_v6;
325 * The task sending data
327 GNUNET_SCHEDULER_TaskIdentifier http_server_task_send;
332 CURLM * multi_handle;
335 * Our ASCII encoded, hashed peer identity
336 * This string is used to distinguish between connections and is added to the urls
338 struct GNUNET_CRYPTO_HashAsciiEncoded my_ascii_hash_ident;
342 * Create a new session
344 * @param addr_in address the peer is using inbound
345 * @param addr_out address the peer is using outbound
346 * @param peer identity
347 * @return created session object
349 static struct Session * create_session (void * cls, char * addr_in, size_t addrlen_in, char * addr_out, size_t addrlen_out, const struct GNUNET_PeerIdentity *peer)
351 struct Plugin *plugin = cls;
352 struct Session * cs = GNUNET_malloc ( sizeof( struct Session) );
354 GNUNET_assert(cls !=NULL);
357 cs->addr_in = GNUNET_malloc (addrlen_in);
358 cs->addr_in_len = addrlen_in;
359 memcpy(cs->addr_in,addr_in,addrlen_in);
362 if (addrlen_out != 0)
364 cs->addr_out = GNUNET_malloc (addrlen_out);
365 cs->addr_out_len = addrlen_out;
366 memcpy(cs->addr_out,addr_out,addrlen_out);
369 memcpy(&cs->identity, peer, sizeof (struct GNUNET_PeerIdentity));
370 GNUNET_CRYPTO_hash_to_enc(&cs->identity.hashPubKey,&(cs->hash));
371 cs->pending_inbound_msg.bytes_recv = 0;
373 cs->outbound_addresses_head = NULL;
374 cs->outbound_addresses_tail = NULL;
379 * Callback called by MHD when a connection is terminated
381 static void requestCompletedCallback (void *cls, struct MHD_Connection * connection, void **httpSessionCache)
385 cs = *httpSessionCache;
388 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection from peer `%s' was terminated\n",GNUNET_i2s(&cs->identity));
389 /* session set to inactive */
390 cs->is_put_in_progress = GNUNET_NO;
391 cs->is_bad_request = GNUNET_NO;
395 static void messageTokenizerCallback (void *cls,
397 const struct GNUNET_MessageHeader *message)
399 struct Session * cs = cls;
400 GNUNET_assert(cs != NULL);
402 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
403 "Received message with type %u and size %u from `%s'\n",
404 ntohs(message->type),
405 ntohs(message->size),
406 GNUNET_i2s(&(cs->identity)));
407 cs->plugin->env->receive(cs->plugin->env->cls,
414 * Check if ip is allowed to connect.
417 acceptPolicyCallback (void *cls,
418 const struct sockaddr *addr, socklen_t addr_len)
421 struct Plugin *plugin = cls;
423 /* Every connection is accepted, nothing more to do here */
428 * Process GET or PUT request received via MHD. For
429 * GET, queue response that will send back our pending
430 * messages. For PUT, process incoming data and send
431 * to GNUnet core. In either case, check if a session
432 * already exists and create a new one if not.
435 accessHandlerCallback (void *cls,
436 struct MHD_Connection *session,
440 const char *upload_data,
441 size_t * upload_data_size, void **httpSessionCache)
443 struct Plugin *plugin = cls;
444 struct MHD_Response *response;
446 const union MHD_ConnectionInfo * conn_info;
447 struct sockaddr_in *addrin;
448 struct sockaddr_in6 *addrin6;
449 char address[INET6_ADDRSTRLEN+14];
450 struct GNUNET_PeerIdentity pi_in;
452 int send_error_to_client;
453 struct IPv4HttpAddress ipv4addr;
454 struct IPv6HttpAddress ipv6addr;
456 GNUNET_assert(cls !=NULL);
457 send_error_to_client = GNUNET_NO;
459 if ( NULL == *httpSessionCache)
461 /* check url for peer identity */
462 res = GNUNET_CRYPTO_hash_from_string ( &url[1], &(pi_in.hashPubKey));
463 if ( GNUNET_SYSERR == res )
465 response = MHD_create_response_from_data (strlen (HTTP_ERROR_RESPONSE),HTTP_ERROR_RESPONSE, MHD_NO, MHD_NO);
466 res = MHD_queue_response (session, MHD_HTTP_NOT_FOUND, response);
467 MHD_destroy_response (response);
469 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Peer has no valid ident, sent HTTP 1.1/404\n");
471 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Peer has no valid ident, could not send error\n");
475 conn_info = MHD_get_connection_info(session, MHD_CONNECTION_INFO_CLIENT_ADDRESS );
476 /* Incoming IPv4 connection */
477 if ( AF_INET == conn_info->client_addr->sin_family)
479 addrin = conn_info->client_addr;
480 inet_ntop(addrin->sin_family, &(addrin->sin_addr),address,INET_ADDRSTRLEN);
481 memcpy(&ipv4addr.ipv4_addr,&(addrin->sin_addr),sizeof(struct in_addr));
482 ipv4addr.u_port = addrin->sin_port;
484 /* Incoming IPv6 connection */
485 if ( AF_INET6 == conn_info->client_addr->sin_family)
487 addrin6 = (struct sockaddr_in6 *) conn_info->client_addr;
488 inet_ntop(addrin6->sin6_family, &(addrin6->sin6_addr),address,INET6_ADDRSTRLEN);
489 memcpy(&ipv6addr.ipv6_addr,&(addrin6->sin6_addr),sizeof(struct in_addr));
490 ipv6addr.u6_port = addrin6->sin6_port;
492 /* find existing session for address */
493 cs = GNUNET_CONTAINER_multihashmap_get (plugin->sessions, &pi_in.hashPubKey);
494 /* no existing session, create a new one*/
497 /* create new session object */
498 if ( AF_INET6 == conn_info->client_addr->sin_family)
499 cs = create_session(plugin, (char *) &ipv6addr, sizeof(struct IPv6HttpAddress),NULL, 0, &pi_in);
500 if ( AF_INET == conn_info->client_addr->sin_family)
501 cs = create_session(plugin, (char *) &ipv4addr, sizeof(struct IPv4HttpAddress),NULL, 0, &pi_in);
503 /* Insert session into hashmap */
504 GNUNET_CONTAINER_multihashmap_put ( plugin->sessions,
505 &cs->identity.hashPubKey,
507 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
509 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"New Session for peer `%s' inserted\n", GNUNET_i2s(&cs->identity));
512 /* Set closure and update current session*/
513 if (*httpSessionCache == NULL)
515 *httpSessionCache = cs;
516 /* Updating session */
518 memcpy(cs->addr_inbound,conn_info->client_addr, sizeof(struct sockaddr_in));
519 if ( AF_INET == cs->addr_inbound->sin_family)
521 GNUNET_asprintf(&cs->addr_inbound_str,"%s:%u",address,ntohs(cs->addr_inbound->sin_port));
524 if ( AF_INET6 == cs->addr_inbound->sin_family)
526 GNUNET_asprintf(&cs->addr_inbound_str,"[%s]:%u",address,ntohs(cs->addr_inbound->sin_port));
530 if (cs->msgtok==NULL)
531 cs->msgtok = GNUNET_SERVER_mst_create (GNUNET_SERVER_MAX_MESSAGE_SIZE, &messageTokenizerCallback, cs);
533 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"HTTP Daemon has new an incoming `%s' request from peer `%s'\n",method, GNUNET_i2s(&cs->identity));
537 cs = *httpSessionCache;
539 /* Is it a PUT or a GET request */
540 if (0 == strcmp (MHD_HTTP_METHOD_PUT, method))
543 if ((*upload_data_size == 0) && (cs->is_put_in_progress == GNUNET_NO))
545 if (cs->pending_inbound_msg.bytes_recv !=0 )
547 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
548 _("Incoming message from peer `%s', while existing message with %u bytes was not forwarded to transport'\n"),
549 GNUNET_i2s(&cs->identity), cs->pending_inbound_msg.bytes_recv);
550 cs->pending_inbound_msg.bytes_recv = 0;
553 cs->is_put_in_progress = GNUNET_YES;
554 cs->is_bad_request = GNUNET_NO;
558 if ((*upload_data_size > 0) && (cs->is_bad_request != GNUNET_YES))
560 if (*upload_data_size + cs->pending_inbound_msg.bytes_recv <= GNUNET_SERVER_MAX_MESSAGE_SIZE)
562 /* copy uploaded data to buffer */
564 res = GNUNET_SERVER_mst_receive(cs->msgtok, cs, upload_data,*upload_data_size, GNUNET_YES, GNUNET_NO);
565 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"%u bytes forwarded to MST: result: %u\n",*upload_data_size, res);
566 cs->pending_inbound_msg.bytes_recv += *upload_data_size;
567 *upload_data_size = 0;
572 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);
573 cs->is_bad_request = GNUNET_YES;
574 /* (*upload_data_size) bytes not processed */
579 if ((cs->is_put_in_progress == GNUNET_YES) && (cs->is_bad_request == GNUNET_YES))
581 *upload_data_size = 0;
582 response = MHD_create_response_from_data (strlen (HTTP_PUT_RESPONSE),HTTP_PUT_RESPONSE, MHD_NO, MHD_NO);
583 res = MHD_queue_response (session, MHD_HTTP_REQUEST_ENTITY_TOO_LARGE, response);
586 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Sent HTTP/1.1: 413 Request Entity Too Large as PUT Response\n");
587 cs->is_bad_request = GNUNET_NO;
588 cs->is_put_in_progress =GNUNET_NO;
589 cs->pending_inbound_msg.bytes_recv = 0;
591 MHD_destroy_response (response);
595 /* Transmission of all data complete */
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;
599 if (cs->pending_inbound_msg.bytes_recv >= sizeof (struct GNUNET_MessageHeader))
600 send_error_to_client = GNUNET_NO;
602 if (send_error_to_client == GNUNET_NO)
604 //response = MHD_create_response_from_data (strlen (HTTP_PUT_RESPONSE),HTTP_PUT_RESPONSE, MHD_NO, MHD_NO);
605 //res = MHD_queue_response (session, MHD_HTTP_OK, response);
606 //GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Sent HTTP/1.1: 200 OK as PUT Response\n",HTTP_PUT_RESPONSE, strlen (HTTP_PUT_RESPONSE), res );
607 //MHD_destroy_response (response);
612 response = MHD_create_response_from_data (strlen (HTTP_PUT_RESPONSE),HTTP_PUT_RESPONSE, MHD_NO, MHD_NO);
613 res = MHD_queue_response (session, MHD_HTTP_BAD_REQUEST, response);
614 MHD_destroy_response (response);
615 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Sent HTTP/1.1: 400 BAD REQUEST as PUT Response\n");
617 cs->is_put_in_progress = GNUNET_NO;
618 cs->is_bad_request = GNUNET_NO;
619 cs->pending_inbound_msg.bytes_recv = 0;
623 if ( 0 == strcmp (MHD_HTTP_METHOD_GET, method) )
625 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Got GET Request\n");
626 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"URL: `%s'\n",url);
627 response = MHD_create_response_from_data (strlen (HTTP_PUT_RESPONSE),HTTP_PUT_RESPONSE, MHD_NO, MHD_NO);
628 res = MHD_queue_response (session, MHD_HTTP_OK, response);
629 MHD_destroy_response (response);
637 * Call MHD to process pending ipv4 requests and then go back
638 * and schedule the next run.
640 static void http_server_daemon_v4_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
642 * Call MHD to process pending ipv6 requests and then go back
643 * and schedule the next run.
645 static void http_server_daemon_v6_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
648 * Function that queries MHD's select sets and
649 * starts the task waiting for them.
651 static GNUNET_SCHEDULER_TaskIdentifier
652 http_server_daemon_prepare (void * cls, struct MHD_Daemon *daemon_handle)
654 struct Plugin *plugin = cls;
655 GNUNET_SCHEDULER_TaskIdentifier ret;
659 struct GNUNET_NETWORK_FDSet *wrs;
660 struct GNUNET_NETWORK_FDSet *wws;
661 struct GNUNET_NETWORK_FDSet *wes;
663 unsigned long long timeout;
665 struct GNUNET_TIME_Relative tv;
667 GNUNET_assert(cls !=NULL);
668 ret = GNUNET_SCHEDULER_NO_TASK;
672 wrs = GNUNET_NETWORK_fdset_create ();
673 wes = GNUNET_NETWORK_fdset_create ();
674 wws = GNUNET_NETWORK_fdset_create ();
676 GNUNET_assert (MHD_YES ==
677 MHD_get_fdset (daemon_handle,
682 haveto = MHD_get_timeout (daemon_handle, &timeout);
683 if (haveto == MHD_YES)
684 tv.value = (uint64_t) timeout;
686 tv = GNUNET_TIME_UNIT_FOREVER_REL;
687 GNUNET_NETWORK_fdset_copy_native (wrs, &rs, max);
688 GNUNET_NETWORK_fdset_copy_native (wws, &ws, max);
689 GNUNET_NETWORK_fdset_copy_native (wes, &es, max);
690 if (daemon_handle == plugin->http_server_daemon_v4)
692 ret = GNUNET_SCHEDULER_add_select (plugin->env->sched,
693 GNUNET_SCHEDULER_PRIORITY_DEFAULT,
694 GNUNET_SCHEDULER_NO_TASK,
698 &http_server_daemon_v4_run,
701 if (daemon_handle == plugin->http_server_daemon_v6)
703 ret = GNUNET_SCHEDULER_add_select (plugin->env->sched,
704 GNUNET_SCHEDULER_PRIORITY_DEFAULT,
705 GNUNET_SCHEDULER_NO_TASK,
709 &http_server_daemon_v6_run,
712 GNUNET_NETWORK_fdset_destroy (wrs);
713 GNUNET_NETWORK_fdset_destroy (wws);
714 GNUNET_NETWORK_fdset_destroy (wes);
719 * Call MHD to process pending requests and then go back
720 * and schedule the next run.
722 static void http_server_daemon_v4_run (void *cls,
723 const struct GNUNET_SCHEDULER_TaskContext *tc)
725 struct Plugin *plugin = cls;
727 GNUNET_assert(cls !=NULL);
728 if (plugin->http_server_task_v4 != GNUNET_SCHEDULER_NO_TASK)
729 plugin->http_server_task_v4 = GNUNET_SCHEDULER_NO_TASK;
731 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
734 GNUNET_assert (MHD_YES == MHD_run (plugin->http_server_daemon_v4));
735 plugin->http_server_task_v4 = http_server_daemon_prepare (plugin, plugin->http_server_daemon_v4);
741 * Call MHD to process pending requests and then go back
742 * and schedule the next run.
744 static void http_server_daemon_v6_run (void *cls,
745 const struct GNUNET_SCHEDULER_TaskContext *tc)
747 struct Plugin *plugin = cls;
749 GNUNET_assert(cls !=NULL);
750 if (plugin->http_server_task_v6 != GNUNET_SCHEDULER_NO_TASK)
751 plugin->http_server_task_v6 = GNUNET_SCHEDULER_NO_TASK;
753 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
756 GNUNET_assert (MHD_YES == MHD_run (plugin->http_server_daemon_v6));
757 plugin->http_server_task_v6 = http_server_daemon_prepare (plugin, plugin->http_server_daemon_v6);
762 * Removes a message from the linked list of messages
763 * @param ses session to remove message from
764 * @param msg message to remove
765 * @return GNUNET_SYSERR if msg not found, GNUNET_OK on success
768 static int remove_http_message(struct HTTP_Connection * con, struct HTTP_Message * msg)
770 GNUNET_CONTAINER_DLL_remove(con->pending_msgs_head,con->pending_msgs_tail,msg);
776 static size_t header_function( void *ptr, size_t size, size_t nmemb, void *stream)
779 size_t len = size * nmemb;
782 if ((size * nmemb) < SIZE_MAX)
783 tmp = GNUNET_malloc (len+1);
785 if ((tmp != NULL) && (len > 0))
790 if (tmp[len-2] == 13)
794 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Header: `%s'\n",tmp);
804 * Callback method used with libcurl
805 * Method is called when libcurl needs to read data during sending
806 * @param stream pointer where to write data
807 * @param size size of an individual element
808 * @param nmemb count of elements that can be written to the buffer
809 * @param ptr source pointer, passed to the libcurl handle
810 * @return bytes written to stream
812 static size_t send_read_callback(void *stream, size_t size, size_t nmemb, void *ptr)
814 struct HTTP_Connection * con = ptr;
815 struct HTTP_Message * msg = con->pending_msgs_tail;
819 msg = con->pending_msgs_head;
826 if (con->pending_msgs_tail != NULL)
827 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"readcallback: msg of %u bytes, %u msgs in queue\n", con->pending_msgs_tail->size,c);
829 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"readcallback: %u msgs in queue\n", c);
831 if (con->pending_msgs_tail == NULL)
833 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"no msgs in queue, pausing \n");
834 return CURL_READFUNC_PAUSE;
837 msg = con->pending_msgs_tail;
839 if (msg->pos < msg->size)
841 /* data fit in buffer */
842 if ((msg->size - msg->pos) <= (size * nmemb))
844 len = (msg->size - msg->pos);
845 memcpy(stream, &msg->buf[msg->pos], len);
852 memcpy(stream, &msg->buf[msg->pos], len);
857 /* no data to send */
863 if ( msg->pos == msg->size)
865 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"msg sent, removing msg \n", bytes_sent);
866 remove_http_message(con, msg);
869 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"readcallback: sent %u bytes \n", bytes_sent);
875 * Callback method used with libcurl
876 * Method is called when libcurl needs to write data during sending
877 * @param stream pointer where to write data
878 * @param size size of an individual element
879 * @param nmemb count of elements that can be written to the buffer
880 * @param ptr destination pointer, passed to the libcurl handle
881 * @return bytes read from stream
883 static size_t send_write_callback( void *stream, size_t size, size_t nmemb, void *ptr)
887 if ((size * nmemb) < SIZE_MAX)
888 data = GNUNET_malloc(size*nmemb +1);
891 memcpy( data, stream, size*nmemb);
892 data[size*nmemb] = '\0';
895 return (size * nmemb);
900 * Function setting up file descriptors and scheduling task to run
901 * @param ses session to send data to
902 * @return bytes sent to peer
904 static size_t send_prepare(void *cls, struct Session* ses );
907 * Function setting up curl handle and selecting message to send
908 * @param ses session to send data to
909 * @return bytes sent to peer
911 static ssize_t send_select_init (void *cls, struct Session* ses , struct HTTP_Connection *con)
913 struct Plugin *plugin = cls;
916 struct HTTP_Message * msg;
918 /* already connected, no need to initiate connection */
919 if ((con->connected == GNUNET_YES) && (con->curl_handle != NULL))
922 /* not connected, initiate connection */
923 GNUNET_assert(cls !=NULL);
924 if ( NULL == con->curl_handle)
925 con->curl_handle = curl_easy_init();
926 GNUNET_assert (con->curl_handle != NULL);
928 GNUNET_assert (NULL != con->pending_msgs_tail);
929 msg = con->pending_msgs_tail;
932 curl_easy_setopt(con->curl_handle, CURLOPT_VERBOSE, 1L);
934 curl_easy_setopt(con->curl_handle, CURLOPT_URL, con->url);
935 curl_easy_setopt(con->curl_handle, CURLOPT_PUT, 1L);
936 curl_easy_setopt(con->curl_handle, CURLOPT_HEADERFUNCTION, &header_function);
937 curl_easy_setopt(con->curl_handle, CURLOPT_WRITEHEADER, con);
938 curl_easy_setopt(con->curl_handle, CURLOPT_READFUNCTION, send_read_callback);
939 curl_easy_setopt(con->curl_handle, CURLOPT_READDATA, con);
940 curl_easy_setopt(con->curl_handle, CURLOPT_WRITEFUNCTION, send_write_callback);
941 curl_easy_setopt(con->curl_handle, CURLOPT_READDATA, con);
942 curl_easy_setopt(con->curl_handle, CURLOPT_INFILESIZE_LARGE, (curl_off_t) msg->size);
943 curl_easy_setopt(con->curl_handle, CURLOPT_TIMEOUT, GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT);
944 curl_easy_setopt(con->curl_handle, CURLOPT_PRIVATE, con);
945 curl_easy_setopt(con->curl_handle, CURLOPT_CONNECTTIMEOUT, HTTP_CONNECT_TIMEOUT_DBG);
946 curl_easy_setopt(con->curl_handle, CURLOPT_BUFFERSIZE, GNUNET_SERVER_MAX_MESSAGE_SIZE);
948 mret = curl_multi_add_handle(plugin->multi_handle, con->curl_handle);
949 if (mret != CURLM_OK)
951 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
952 _("%s failed at %s:%d: `%s'\n"),
953 "curl_multi_add_handle", __FILE__, __LINE__,
954 curl_multi_strerror (mret));
958 con->connected = GNUNET_YES;
960 bytes_sent = send_prepare (plugin, ses);
964 static void send_execute (void *cls,
965 const struct GNUNET_SCHEDULER_TaskContext *tc)
967 struct Plugin *plugin = cls;
968 static unsigned int handles_last_run;
972 struct HTTP_Connection * con = NULL;
973 struct Session * cs = NULL;
976 GNUNET_assert(cls !=NULL);
977 plugin->http_server_task_send = GNUNET_SCHEDULER_NO_TASK;
978 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
984 mret = curl_multi_perform (plugin->multi_handle, &running);
985 if (running < handles_last_run)
990 msg = curl_multi_info_read (plugin->multi_handle, &running);
991 GNUNET_break (msg != NULL);
994 /* get session for affected curl handle */
995 GNUNET_assert ( msg->easy_handle != NULL );
996 curl_easy_getinfo(msg->easy_handle, CURLINFO_PRIVATE, &con);
997 GNUNET_assert ( con != NULL );
999 GNUNET_assert ( cs != NULL );
1000 //GNUNET_assert ( cs->pending_outbound_msg_tail != NULL );
1005 if ( (msg->data.result != CURLE_OK) &&
1006 (msg->data.result != CURLE_GOT_NOTHING) )
1008 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
1009 _("%s failed for `%s' at %s:%d: `%s'\n"),
1010 "curl_multi_perform",
1011 GNUNET_i2s(&cs->identity),
1014 curl_easy_strerror (msg->data.result));
1015 /* sending msg failed*/
1016 con->connected = GNUNET_NO;
1017 if (( NULL != con->pending_msgs_tail) && ( NULL != con->pending_msgs_tail->transmit_cont))
1018 con->pending_msgs_tail->transmit_cont (con->pending_msgs_tail->transmit_cont_cls,&con->session->identity,GNUNET_SYSERR);
1023 GNUNET_assert (CURLE_OK == curl_easy_getinfo(msg->easy_handle, CURLINFO_RESPONSE_CODE, &http_result));
1024 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1025 "Send to peer `%s' completed with code %u\n", GNUNET_i2s(&cs->identity), http_result );
1027 curl_easy_cleanup(con->curl_handle);
1028 con->connected = GNUNET_NO;
1029 con->curl_handle=NULL;
1031 /* Calling transmit continuation */
1032 if (( NULL != con->pending_msgs_tail) && (NULL != con->pending_msgs_tail->transmit_cont))
1034 /* HTTP 1xx : Last message before here was informational */
1035 if ((http_result >=100) && (http_result < 200))
1036 con->pending_msgs_tail->transmit_cont (con->pending_msgs_tail->transmit_cont_cls,&cs->identity,GNUNET_OK);
1037 /* HTTP 2xx: successful operations */
1038 if ((http_result >=200) && (http_result < 300))
1039 con->pending_msgs_tail->transmit_cont (con->pending_msgs_tail->transmit_cont_cls,&cs->identity,GNUNET_OK);
1040 /* HTTP 3xx..5xx: error */
1041 if ((http_result >=300) && (http_result < 600))
1042 con->pending_msgs_tail->transmit_cont (con->pending_msgs_tail->transmit_cont_cls,&cs->identity,GNUNET_SYSERR);
1046 if (GNUNET_OK != remove_http_message(con, con->pending_msgs_tail))
1047 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Message could not be removed from session `%s'", GNUNET_i2s(&cs->identity));
1048 /* send pending messages */
1049 if (con->pending_msgs_tail!= NULL)
1051 send_select_init (plugin, cs, con);
1059 while ( (running > 0) );
1061 handles_last_run = running;
1063 while (mret == CURLM_CALL_MULTI_PERFORM);
1064 send_prepare(plugin, cls);
1069 * Function setting up file descriptors and scheduling task to run
1070 * @param ses session to send data to
1071 * @return bytes sent to peer
1073 static size_t send_prepare(void *cls, struct Session* ses )
1075 struct Plugin *plugin = cls;
1080 struct GNUNET_NETWORK_FDSet *grs;
1081 struct GNUNET_NETWORK_FDSet *gws;
1085 GNUNET_assert(cls !=NULL);
1090 mret = curl_multi_fdset (plugin->multi_handle, &rs, &ws, &es, &max);
1091 if (mret != CURLM_OK)
1093 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1094 _("%s failed at %s:%d: `%s'\n"),
1095 "curl_multi_fdset", __FILE__, __LINE__,
1096 curl_multi_strerror (mret));
1099 mret = curl_multi_timeout (plugin->multi_handle, &to);
1100 if (mret != CURLM_OK)
1102 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1103 _("%s failed at %s:%d: `%s'\n"),
1104 "curl_multi_timeout", __FILE__, __LINE__,
1105 curl_multi_strerror (mret));
1109 grs = GNUNET_NETWORK_fdset_create ();
1110 gws = GNUNET_NETWORK_fdset_create ();
1111 GNUNET_NETWORK_fdset_copy_native (grs, &rs, max + 1);
1112 GNUNET_NETWORK_fdset_copy_native (gws, &ws, max + 1);
1113 plugin->http_server_task_send = GNUNET_SCHEDULER_add_select (plugin->env->sched,
1114 GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1115 GNUNET_SCHEDULER_NO_TASK,
1116 GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 0),
1121 GNUNET_NETWORK_fdset_destroy (gws);
1122 GNUNET_NETWORK_fdset_destroy (grs);
1124 /* FIXME: return bytes REALLY sent */
1129 * Check if session for this peer is already existing, otherwise create it
1130 * @param cls the plugin used
1131 * @param p peer to get session for
1132 * @return session found or created
1134 static struct Session * session_get (void * cls, const struct GNUNET_PeerIdentity *p)
1136 struct Plugin *plugin = cls;
1140 cs = GNUNET_CONTAINER_multihashmap_get (plugin->sessions, &p->hashPubKey);
1143 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1144 "Session `%s' found\n", GNUNET_i2s(p));
1148 cs = create_session(plugin, NULL, 0, NULL, 0, p);
1149 res = GNUNET_CONTAINER_multihashmap_put ( plugin->sessions,
1150 &cs->identity.hashPubKey,
1152 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
1153 if (res == GNUNET_OK)
1154 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1155 "New Session `%s' inserted\n", GNUNET_i2s(p));
1160 static char * create_url(void * cls, const void * addr, size_t addrlen)
1162 struct Plugin *plugin = cls;
1166 GNUNET_assert ((addr!=NULL) && (addrlen != 0));
1167 if (addrlen == (sizeof (struct IPv4HttpAddress)))
1169 address = GNUNET_malloc(INET_ADDRSTRLEN + 1);
1170 inet_ntop(AF_INET, &((struct IPv4HttpAddress *) addr)->ipv4_addr,address,INET_ADDRSTRLEN);
1171 GNUNET_asprintf (&url,
1174 ntohs(((struct IPv4HttpAddress *) addr)->u_port),
1175 (char *) (&plugin->my_ascii_hash_ident));
1176 GNUNET_free(address);
1178 else if (addrlen == (sizeof (struct IPv6HttpAddress)))
1180 address = GNUNET_malloc(INET6_ADDRSTRLEN + 1);
1181 inet_ntop(AF_INET6, &((struct IPv6HttpAddress *) addr)->ipv6_addr,address,INET6_ADDRSTRLEN);
1182 GNUNET_asprintf(&url,
1185 ntohs(((struct IPv6HttpAddress *) addr)->u6_port),
1186 (char *) (&plugin->my_ascii_hash_ident));
1187 GNUNET_free(address);
1193 * Check if session already knows this address for a outbound connection to this peer
1194 * If address not in session, add it to the session
1195 * @param cls the plugin used
1196 * @param p the session
1197 * @param addr address
1198 * @param addr_len address length
1199 * @return GNUNET_NO if address not known, GNUNET_YES if known
1201 static struct HTTP_Connection * session_check_address (void * cls, struct Session *cs, const void * addr, size_t addr_len)
1203 struct Plugin *plugin = cls;
1204 struct HTTP_Connection * cc = cs->outbound_addresses_head;
1205 struct HTTP_Connection * con = NULL;
1207 GNUNET_assert((addr_len == sizeof (struct IPv4HttpAddress)) || (addr_len == sizeof (struct IPv6HttpAddress)));
1211 if (addr_len == cc->addrlen)
1213 if (0 == memcmp(cc->addr, addr, addr_len))
1223 con = GNUNET_malloc(sizeof(struct HTTP_Connection) + addr_len);
1224 con->addrlen = addr_len;
1226 con->url=create_url(plugin, addr, addr_len);
1227 con->connected = GNUNET_NO;
1229 memcpy(con->addr, addr, addr_len);
1230 GNUNET_CONTAINER_DLL_insert(cs->outbound_addresses_head,cs->outbound_addresses_tail,con);
1236 * Function that can be used by the transport service to transmit
1237 * a message using the plugin.
1239 * @param cls closure
1240 * @param target who should receive this message
1241 * @param priority how important is the message
1242 * @param msgbuf the message to transmit
1243 * @param msgbuf_size number of bytes in 'msgbuf'
1244 * @param to when should we time out
1245 * @param session which session must be used (or NULL for "any")
1246 * @param addr the address to use (can be NULL if the plugin
1247 * is "on its own" (i.e. re-use existing TCP connection))
1248 * @param addrlen length of the address in bytes
1249 * @param force_address GNUNET_YES if the plugin MUST use the given address,
1250 * otherwise the plugin may use other addresses or
1251 * existing connections (if available)
1252 * @param cont continuation to call once the message has
1253 * been transmitted (or if the transport is ready
1254 * for the next transmission call; or if the
1255 * peer disconnected...)
1256 * @param cont_cls closure for cont
1257 * @return number of bytes used (on the physical network, with overheads);
1258 * -1 on hard errors (i.e. address invalid); 0 is a legal value
1259 * and does NOT mean that the message was not transmitted (DV)
1262 http_plugin_send (void *cls,
1263 const struct GNUNET_PeerIdentity *target,
1266 unsigned int priority,
1267 struct GNUNET_TIME_Relative to,
1268 struct Session *session,
1272 GNUNET_TRANSPORT_TransmitContinuation cont,
1275 struct Plugin *plugin = cls;
1279 struct HTTP_Message *msg;
1280 struct HTTP_Connection *con;
1283 GNUNET_assert(cls !=NULL);
1287 /* get session from hashmap */
1288 cs = session_get(plugin, target);
1289 con = session_check_address(plugin, cs, addr, addrlen);
1292 msg = GNUNET_malloc (sizeof (struct HTTP_Message) + msgbuf_size);
1294 msg->size = msgbuf_size;
1296 msg->buf = (char *) &msg[1];
1297 msg->dest_url = url;
1298 msg->transmit_cont = cont;
1299 msg->transmit_cont_cls = cont_cls;
1300 memcpy (msg->buf,msgbuf, msgbuf_size);
1302 /* must use this address */
1303 if (force_address == GNUNET_YES)
1305 /* enqueue in connection message queue */
1306 GNUNET_CONTAINER_DLL_insert(con->pending_msgs_head,con->pending_msgs_tail,msg);
1308 /* can use existing connection to send */
1311 /* enqueue in connection message queue */
1312 GNUNET_CONTAINER_DLL_insert(con->pending_msgs_head,con->pending_msgs_tail,msg);
1315 return send_select_init (plugin, cs, con);
1318 /* insert created message in double linked list of pending messages */
1320 GNUNET_CONTAINER_DLL_insert (cs->pending_outbound_msg_head, cs->pending_outbound_msg_tail, msg);
1322 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"HTTP Plugin: sending %u bytes of data from peer `%4.4s' to peer `%s'\n",msgbuf_size,(char *) &plugin->my_ascii_hash_ident,GNUNET_i2s(target));
1323 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"HTTP Plugin: url `%s'\n",url);
1324 if (msg == cs->pending_outbound_msg_tail)
1326 return send_select_init (plugin, cs);
1335 * Function that can be used to force the plugin to disconnect
1336 * from the given peer and cancel all previous transmissions
1337 * (and their continuationc).
1339 * @param cls closure
1340 * @param target peer from which to disconnect
1343 http_plugin_disconnect (void *cls,
1344 const struct GNUNET_PeerIdentity *target)
1346 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"HTTP Plugin: http_plugin_disconnect\n");
1347 // struct Plugin *plugin = cls;
1353 * Convert the transports address to a nice, human-readable
1356 * @param cls closure
1357 * @param type name of the transport that generated the address
1358 * @param addr one of the addresses of the host, NULL for the last address
1359 * the specific address format depends on the transport
1360 * @param addrlen length of the address
1361 * @param numeric should (IP) addresses be displayed in numeric form?
1362 * @param timeout after how long should we give up?
1363 * @param asc function to call on each string
1364 * @param asc_cls closure for asc
1367 http_plugin_address_pretty_printer (void *cls,
1372 struct GNUNET_TIME_Relative timeout,
1373 GNUNET_TRANSPORT_AddressStringCallback
1376 const struct IPv4HttpAddress *t4;
1377 const struct IPv6HttpAddress *t6;
1378 struct sockaddr_in a4;
1379 struct sockaddr_in6 a6;
1385 GNUNET_assert(cls !=NULL);
1386 if (addrlen == sizeof (struct IPv6HttpAddress))
1388 address = GNUNET_malloc (INET6_ADDRSTRLEN);
1390 a6.sin6_addr = t6->ipv6_addr;
1391 inet_ntop(AF_INET6, &(a6.sin6_addr),address,INET6_ADDRSTRLEN);
1392 port = ntohs(t6->u6_port);
1394 else if (addrlen == sizeof (struct IPv4HttpAddress))
1396 address = GNUNET_malloc (INET_ADDRSTRLEN);
1398 a4.sin_addr.s_addr = t4->ipv4_addr;
1399 inet_ntop(AF_INET, &(a4.sin_addr),address,INET_ADDRSTRLEN);
1400 port = ntohs(t4->u_port);
1404 /* invalid address */
1405 GNUNET_break_op (0);
1406 asc (asc_cls, NULL);
1409 res = GNUNET_asprintf(&ret,"http://%s:%u/",address,port);
1410 GNUNET_free (address);
1411 GNUNET_assert(res != 0);
1419 * Another peer has suggested an address for this
1420 * peer and transport plugin. Check that this could be a valid
1421 * address. If so, consider adding it to the list
1424 * @param cls closure
1425 * @param addr pointer to the address
1426 * @param addrlen length of addr
1427 * @return GNUNET_OK if this is a plausible address for this peer
1431 http_plugin_address_suggested (void *cls,
1432 void *addr, size_t addrlen)
1434 struct Plugin *plugin = cls;
1435 struct IPv4HttpAddress *v4;
1436 struct IPv6HttpAddress *v6;
1439 GNUNET_assert(cls !=NULL);
1440 if ((addrlen != sizeof (struct IPv4HttpAddress)) &&
1441 (addrlen != sizeof (struct IPv6HttpAddress)))
1443 return GNUNET_SYSERR;
1445 if (addrlen == sizeof (struct IPv4HttpAddress))
1447 v4 = (struct IPv4HttpAddress *) addr;
1448 if (INADDR_LOOPBACK == ntohl(v4->ipv4_addr))
1450 return GNUNET_SYSERR;
1452 port = ntohs (v4->u_port);
1453 if (port != plugin->port_inbound)
1455 return GNUNET_SYSERR;
1460 v6 = (struct IPv6HttpAddress *) addr;
1461 if (IN6_IS_ADDR_LINKLOCAL (&v6->ipv6_addr))
1463 return GNUNET_SYSERR;
1465 port = ntohs (v6->u6_port);
1466 if (port != plugin->port_inbound)
1468 return GNUNET_SYSERR;
1478 * Function called for a quick conversion of the binary address to
1479 * a numeric address. Note that the caller must not free the
1480 * address and that the next call to this function is allowed
1481 * to override the address again.
1483 * @param cls closure
1484 * @param addr binary address
1485 * @param addrlen length of the address
1486 * @return string representing the same address
1489 http_plugin_address_to_string (void *cls,
1493 const struct IPv4HttpAddress *t4;
1494 const struct IPv6HttpAddress *t6;
1495 struct sockaddr_in a4;
1496 struct sockaddr_in6 a6;
1502 GNUNET_assert(cls !=NULL);
1503 if (addrlen == sizeof (struct IPv6HttpAddress))
1505 address = GNUNET_malloc (INET6_ADDRSTRLEN);
1507 a6.sin6_addr = t6->ipv6_addr;
1508 inet_ntop(AF_INET6, &(a6.sin6_addr),address,INET6_ADDRSTRLEN);
1509 port = ntohs(t6->u6_port);
1511 else if (addrlen == sizeof (struct IPv4HttpAddress))
1513 address = GNUNET_malloc (INET_ADDRSTRLEN);
1515 a4.sin_addr.s_addr = t4->ipv4_addr;
1516 inet_ntop(AF_INET, &(a4.sin_addr),address,INET_ADDRSTRLEN);
1517 port = ntohs(t4->u_port);
1521 /* invalid address */
1524 res = GNUNET_asprintf(&ret,"%s:%u",address,port);
1525 GNUNET_free (address);
1526 GNUNET_assert(res != 0);
1531 * Add the IP of our network interface to the list of
1532 * our external IP addresses.
1534 * @param cls the 'struct Plugin*'
1535 * @param name name of the interface
1536 * @param isDefault do we think this may be our default interface
1537 * @param addr address of the interface
1538 * @param addrlen number of bytes in addr
1539 * @return GNUNET_OK to continue iterating
1542 process_interfaces (void *cls,
1545 const struct sockaddr *addr, socklen_t addrlen)
1547 struct Plugin *plugin = cls;
1548 struct IPv4HttpAddress t4;
1549 struct IPv6HttpAddress t6;
1554 GNUNET_assert(cls !=NULL);
1555 af = addr->sa_family;
1558 if (INADDR_LOOPBACK == ntohl(((struct sockaddr_in *) addr)->sin_addr.s_addr))
1560 /* skip loopback addresses */
1563 t4.ipv4_addr = ((struct sockaddr_in *) addr)->sin_addr.s_addr;
1564 t4.u_port = htons (plugin->port_inbound);
1568 else if (af == AF_INET6)
1570 if (IN6_IS_ADDR_LINKLOCAL (&((struct sockaddr_in6 *) addr)->sin6_addr))
1572 /* skip link local addresses */
1575 if (IN6_IS_ADDR_LOOPBACK (&((struct sockaddr_in6 *) addr)->sin6_addr))
1577 /* skip loopback addresses */
1580 memcpy (&t6.ipv6_addr,
1581 &((struct sockaddr_in6 *) addr)->sin6_addr,
1582 sizeof (struct in6_addr));
1583 t6.u6_port = htons (plugin->port_inbound);
1592 plugin->env->notify_address(plugin->env->cls,"http",arg, args, GNUNET_TIME_UNIT_FOREVER_REL);
1596 int hashMapFreeIterator (void *cls, const GNUNET_HashCode *key, void *value)
1598 struct Session * cs = value;
1600 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Freeing session for peer `%s'\n",GNUNET_i2s(&cs->identity));
1602 /* freeing messages */
1603 struct HTTP_Message *cur;
1604 struct HTTP_Message *tmp;
1605 cur = cs->pending_outbound_msg_head;
1610 GNUNET_free_non_null(cur->dest_url);
1614 GNUNET_SERVER_mst_destroy (cs->msgtok);
1615 GNUNET_free_non_null (cs->addr_in);
1616 GNUNET_free_non_null (cs->addr_out);
1622 * Exit point from the plugin.
1625 libgnunet_plugin_transport_http_done (void *cls)
1627 struct GNUNET_TRANSPORT_PluginFunctions *api = cls;
1628 struct Plugin *plugin = api->cls;
1631 GNUNET_assert(cls !=NULL);
1634 if ( plugin->http_server_task_v4 != GNUNET_SCHEDULER_NO_TASK)
1636 GNUNET_SCHEDULER_cancel(plugin->env->sched, plugin->http_server_task_v4);
1637 plugin->http_server_task_v4 = GNUNET_SCHEDULER_NO_TASK;
1640 if ( plugin->http_server_task_v6 != GNUNET_SCHEDULER_NO_TASK)
1642 GNUNET_SCHEDULER_cancel(plugin->env->sched, plugin->http_server_task_v6);
1643 plugin->http_server_task_v6 = GNUNET_SCHEDULER_NO_TASK;
1646 if ( plugin->http_server_task_send != GNUNET_SCHEDULER_NO_TASK)
1648 GNUNET_SCHEDULER_cancel(plugin->env->sched, plugin->http_server_task_send);
1649 plugin->http_server_task_send = GNUNET_SCHEDULER_NO_TASK;
1652 if (plugin->http_server_daemon_v4 != NULL)
1654 MHD_stop_daemon (plugin->http_server_daemon_v4);
1655 plugin->http_server_daemon_v4 = NULL;
1657 if (plugin->http_server_daemon_v6 != NULL)
1659 MHD_stop_daemon (plugin->http_server_daemon_v6);
1660 plugin->http_server_daemon_v6 = NULL;
1663 /* free all sessions */
1664 GNUNET_CONTAINER_multihashmap_iterate (plugin->sessions,
1665 &hashMapFreeIterator,
1668 GNUNET_CONTAINER_multihashmap_destroy (plugin->sessions);
1670 mret = curl_multi_cleanup(plugin->multi_handle);
1671 if ( CURLM_OK != mret)
1672 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"curl multihandle clean up failed");
1674 GNUNET_free (plugin);
1676 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Unload http plugin complete...\n");
1682 * Entry point for the plugin.
1685 libgnunet_plugin_transport_http_init (void *cls)
1687 struct GNUNET_TRANSPORT_PluginEnvironment *env = cls;
1688 struct Plugin *plugin;
1689 struct GNUNET_TRANSPORT_PluginFunctions *api;
1690 struct GNUNET_TIME_Relative gn_timeout;
1691 long long unsigned int port;
1693 GNUNET_assert(cls !=NULL);
1694 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting http plugin...\n");
1696 plugin = GNUNET_malloc (sizeof (struct Plugin));
1698 plugin->sessions = NULL;
1700 api = GNUNET_malloc (sizeof (struct GNUNET_TRANSPORT_PluginFunctions));
1702 api->send = &http_plugin_send;
1703 api->disconnect = &http_plugin_disconnect;
1704 api->address_pretty_printer = &http_plugin_address_pretty_printer;
1705 api->check_address = &http_plugin_address_suggested;
1706 api->address_to_string = &http_plugin_address_to_string;
1708 /* Hashing our identity to use it in URLs */
1709 GNUNET_CRYPTO_hash_to_enc ( &(plugin->env->my_identity->hashPubKey), &plugin->my_ascii_hash_ident);
1711 /* Reading port number from config file */
1713 GNUNET_CONFIGURATION_get_value_number (env->cfg,
1719 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
1722 ("Require valid port number for transport plugin `%s' in configuration!\n"),
1724 libgnunet_plugin_transport_http_done (api);
1727 GNUNET_assert ((port > 0) && (port <= 65535));
1728 plugin->port_inbound = port;
1729 gn_timeout = GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT;
1730 if ((plugin->http_server_daemon_v4 == NULL) && (plugin->http_server_daemon_v6 == NULL) && (port != 0))
1732 plugin->http_server_daemon_v6 = MHD_start_daemon (MHD_USE_IPv6,
1734 &acceptPolicyCallback,
1735 plugin , &accessHandlerCallback, plugin,
1736 MHD_OPTION_CONNECTION_LIMIT, (unsigned int) 16,
1737 MHD_OPTION_PER_IP_CONNECTION_LIMIT, (unsigned int) 1,
1738 MHD_OPTION_CONNECTION_TIMEOUT, (gn_timeout.value / 1000),
1739 MHD_OPTION_CONNECTION_MEMORY_LIMIT, (size_t) (16 * 1024),
1740 MHD_OPTION_NOTIFY_COMPLETED, &requestCompletedCallback, NULL,
1742 plugin->http_server_daemon_v4 = MHD_start_daemon (MHD_NO_FLAG,
1744 &acceptPolicyCallback,
1745 plugin , &accessHandlerCallback, plugin,
1746 MHD_OPTION_CONNECTION_LIMIT, (unsigned int) 16,
1747 MHD_OPTION_PER_IP_CONNECTION_LIMIT, (unsigned int) 1,
1748 MHD_OPTION_CONNECTION_TIMEOUT, (gn_timeout.value / 1000),
1749 MHD_OPTION_CONNECTION_MEMORY_LIMIT, (size_t) (16 * 1024),
1750 MHD_OPTION_NOTIFY_COMPLETED, &requestCompletedCallback, NULL,
1753 if (plugin->http_server_daemon_v4 != NULL)
1754 plugin->http_server_task_v4 = http_server_daemon_prepare (plugin, plugin->http_server_daemon_v4);
1755 if (plugin->http_server_daemon_v6 != NULL)
1756 plugin->http_server_task_v6 = http_server_daemon_prepare (plugin, plugin->http_server_daemon_v6);
1758 if (plugin->http_server_task_v4 != GNUNET_SCHEDULER_NO_TASK)
1759 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting MHD with IPv4 on port %u\n",port);
1760 else if (plugin->http_server_task_v6 != GNUNET_SCHEDULER_NO_TASK)
1761 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting MHD with IPv4 and IPv6 on port %u\n",port);
1764 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"No MHD was started, transport plugin not functional!\n");
1765 libgnunet_plugin_transport_http_done (api);
1769 /* Initializing cURL */
1770 curl_global_init(CURL_GLOBAL_ALL);
1771 plugin->multi_handle = curl_multi_init();
1773 if ( NULL == plugin->multi_handle )
1775 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
1777 _("Could not initialize curl multi handle, failed to start http plugin!\n"),
1779 libgnunet_plugin_transport_http_done (api);
1783 plugin->sessions = GNUNET_CONTAINER_multihashmap_create (10);
1784 GNUNET_OS_network_interfaces_list (&process_interfaces, plugin);
1789 /* end of plugin_transport_http.c */