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
48 * Text of the response sent back after the last bytes of a PUT
49 * request have been received (just to formally obey the HTTP
52 #define HTTP_PUT_RESPONSE "Thank you!"
55 * After how long do we expire an address that we
56 * learned from another peer if it is not reconfirmed
59 #define LEARNED_ADDRESS_EXPIRATION GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_HOURS, 6)
62 * Page returned if request invalid
64 #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>"
67 * Timeout for a http connect
69 #define HTTP_CONNECT_TIMEOUT 30
72 * Network format for IPv4 addresses.
74 struct IPv4HttpAddress
77 * IPv4 address, in network byte order.
82 * Port number, in network byte order.
90 * Network format for IPv6 addresses.
92 struct IPv6HttpAddress
97 struct in6_addr ipv6_addr;
100 * Port number, in network byte order.
106 struct HTTP_inbound_transmission
115 * Message to send using http
120 * next pointer for double linked list
122 struct HTTP_Message * next;
125 * previous pointer for double linked list
127 struct HTTP_Message * prev;
130 * buffer containing data to send
135 * amount of data already sent
147 * Continuation function to call once the transmission buffer
148 * has again space available. NULL if there is no
149 * continuation to call.
151 GNUNET_TRANSPORT_TransmitContinuation transmit_cont;
154 * Closure for transmit_cont.
156 void *transmit_cont_cls;
160 struct HTTP_Connection
162 struct HTTP_Connection * next;
164 struct HTTP_Connection * prev;
169 struct HTTP_Message * pending_msgs_head;
170 struct HTTP_Message * pending_msgs_tail;
173 unsigned int connected;
176 * curl handle for this ransmission
182 * Session handle for connections.
188 * Stored in a linked list.
190 struct Session *next;
193 * Pointer to the global plugin struct.
195 struct Plugin *plugin;
198 * To whom are we talking to (set to our identity
199 * if we are still waiting for the welcome message)
201 struct GNUNET_PeerIdentity partner;
204 * Sender's ip address to distinguish between incoming connections
206 //struct sockaddr_in * addr_inbound;
209 * Sender's ip address to distinguish between incoming connections
220 * Did we initiate the connection (GNUNET_YES) or the other peer (GNUNET_NO)?
225 * At what time did we reset last_received last?
227 struct GNUNET_TIME_Absolute last_quota_update;
230 * How many bytes have we received since the "last_quota_update"
233 uint64_t last_received;
236 * Number of bytes per ms that this peer is allowed
242 * Is there a HTTP/PUT in progress?
244 int is_put_in_progress;
247 * Is the http request invalid?
254 struct GNUNET_CRYPTO_HashAsciiEncoded hash;
257 * Head of dll used to store outbound messages
259 struct HTTP_Message * pending_outbound_msg_head;
262 * Tail of dll used to store outbound messages
264 struct HTTP_Message * pending_outbound_msg_tail;
269 struct HTTP_inbound_transmission pending_inbound_msg;
272 * curl handle for outbound transmissions
277 * Message tokenizer for incoming data
279 struct GNUNET_SERVER_MessageStreamTokenizer * msgtok;
281 struct HTTP_Connection *outbound_addresses_head;
282 struct HTTP_Connection *outbound_addresses_tail;
286 * Encapsulation of all of the state of the plugin.
293 struct GNUNET_TRANSPORT_PluginEnvironment *env;
295 unsigned int port_inbound;
298 * Hashmap for all existing sessions.
300 struct GNUNET_CONTAINER_MultiHashMap *sessions;
303 * Daemon for listening for new IPv4 connections.
305 struct MHD_Daemon *http_server_daemon_v4;
308 * Daemon for listening for new IPv6connections.
310 struct MHD_Daemon *http_server_daemon_v6;
313 * Our primary task for http daemon handling IPv4 connections
315 GNUNET_SCHEDULER_TaskIdentifier http_server_task_v4;
318 * Our primary task for http daemon handling IPv6 connections
320 GNUNET_SCHEDULER_TaskIdentifier http_server_task_v6;
323 * The task sending data
325 GNUNET_SCHEDULER_TaskIdentifier http_server_task_send;
330 CURLM * multi_handle;
333 * Our ASCII encoded, hashed peer identity
334 * This string is used to distinguish between connections and is added to the urls
336 struct GNUNET_CRYPTO_HashAsciiEncoded my_ascii_hash_ident;
340 * Create a new session
342 * @param addr_in address the peer is using inbound
343 * @param addr_out address the peer is using outbound
344 * @param peer identity
345 * @return created session object
347 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)
349 struct Plugin *plugin = cls;
350 struct Session * cs = GNUNET_malloc ( sizeof( struct Session) );
352 GNUNET_assert(cls !=NULL);
355 cs->addr_in = GNUNET_malloc (addrlen_in);
356 cs->addr_in_len = addrlen_in;
357 memcpy(cs->addr_in,addr_in,addrlen_in);
360 if (addrlen_out != 0)
362 cs->addr_out = GNUNET_malloc (addrlen_out);
363 cs->addr_out_len = addrlen_out;
364 memcpy(cs->addr_out,addr_out,addrlen_out);
367 memcpy(&cs->partner, peer, sizeof (struct GNUNET_PeerIdentity));
368 GNUNET_CRYPTO_hash_to_enc(&cs->partner.hashPubKey,&(cs->hash));
369 cs->pending_inbound_msg.bytes_recv = 0;
371 cs->outbound_addresses_head = NULL;
372 cs->outbound_addresses_tail = NULL;
377 * Callback called by MHD when a connection is terminated
379 static void requestCompletedCallback (void *cls, struct MHD_Connection * connection, void **httpSessionCache)
383 cs = *httpSessionCache;
386 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection from peer `%s' was terminated\n",GNUNET_i2s(&cs->partner));
387 /* session set to inactive */
388 cs->is_put_in_progress = GNUNET_NO;
389 cs->is_bad_request = GNUNET_NO;
393 static void messageTokenizerCallback (void *cls,
395 const struct GNUNET_MessageHeader *message)
397 struct Session * cs = cls;
398 GNUNET_assert(cs != NULL);
400 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
401 "Received message with type %u and size %u from `%s'\n",
402 ntohs(message->type),
403 ntohs(message->size),
404 GNUNET_i2s(&(cs->partner)));
405 cs->plugin->env->receive(cs->plugin->env->cls,
412 * Check if ip is allowed to connect.
415 acceptPolicyCallback (void *cls,
416 const struct sockaddr *addr, socklen_t addr_len)
419 struct Plugin *plugin = cls;
421 /* Every connection is accepted, nothing more to do here */
426 * Process GET or PUT request received via MHD. For
427 * GET, queue response that will send back our pending
428 * messages. For PUT, process incoming data and send
429 * to GNUnet core. In either case, check if a session
430 * already exists and create a new one if not.
433 accessHandlerCallback (void *cls,
434 struct MHD_Connection *session,
438 const char *upload_data,
439 size_t * upload_data_size, void **httpSessionCache)
441 struct Plugin *plugin = cls;
442 struct MHD_Response *response;
444 const union MHD_ConnectionInfo * conn_info;
445 struct sockaddr_in *addrin;
446 struct sockaddr_in6 *addrin6;
447 char address[INET6_ADDRSTRLEN+14];
448 struct GNUNET_PeerIdentity pi_in;
450 int send_error_to_client;
451 struct IPv4HttpAddress ipv4addr;
452 struct IPv6HttpAddress ipv6addr;
454 GNUNET_assert(cls !=NULL);
455 send_error_to_client = GNUNET_NO;
457 if ( NULL == *httpSessionCache)
459 /* check url for peer identity */
460 res = GNUNET_CRYPTO_hash_from_string ( &url[1], &(pi_in.hashPubKey));
461 if ( GNUNET_SYSERR == res )
463 response = MHD_create_response_from_data (strlen (HTTP_ERROR_RESPONSE),HTTP_ERROR_RESPONSE, MHD_NO, MHD_NO);
464 res = MHD_queue_response (session, MHD_HTTP_NOT_FOUND, response);
465 MHD_destroy_response (response);
467 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Peer has no valid ident, sent HTTP 1.1/404\n");
469 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Peer has no valid ident, could not send error\n");
473 conn_info = MHD_get_connection_info(session, MHD_CONNECTION_INFO_CLIENT_ADDRESS );
474 /* Incoming IPv4 connection */
475 if ( AF_INET == conn_info->client_addr->sin_family)
477 addrin = conn_info->client_addr;
478 inet_ntop(addrin->sin_family, &(addrin->sin_addr),address,INET_ADDRSTRLEN);
479 memcpy(&ipv4addr.ipv4_addr,&(addrin->sin_addr),sizeof(struct in_addr));
480 ipv4addr.u_port = addrin->sin_port;
482 /* Incoming IPv6 connection */
483 if ( AF_INET6 == conn_info->client_addr->sin_family)
485 addrin6 = (struct sockaddr_in6 *) conn_info->client_addr;
486 inet_ntop(addrin6->sin6_family, &(addrin6->sin6_addr),address,INET6_ADDRSTRLEN);
487 memcpy(&ipv6addr.ipv6_addr,&(addrin6->sin6_addr),sizeof(struct in_addr));
488 ipv6addr.u6_port = addrin6->sin6_port;
490 /* find existing session for address */
491 cs = GNUNET_CONTAINER_multihashmap_get (plugin->sessions, &pi_in.hashPubKey);
492 /* no existing session, create a new one*/
495 /* create new session object */
496 if ( AF_INET6 == conn_info->client_addr->sin_family)
497 cs = create_session(plugin, (char *) &ipv6addr, sizeof(struct IPv6HttpAddress),NULL, 0, &pi_in);
498 if ( AF_INET == conn_info->client_addr->sin_family)
499 cs = create_session(plugin, (char *) &ipv4addr, sizeof(struct IPv4HttpAddress),NULL, 0, &pi_in);
501 /* Insert session into hashmap */
502 GNUNET_CONTAINER_multihashmap_put ( plugin->sessions,
503 &cs->partner.hashPubKey,
505 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
507 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"New Session for peer `%s' inserted\n", GNUNET_i2s(&cs->partner));
510 /* Set closure and update current session*/
511 if (*httpSessionCache == NULL)
513 *httpSessionCache = cs;
514 /* Updating session */
516 memcpy(cs->addr_inbound,conn_info->client_addr, sizeof(struct sockaddr_in));
517 if ( AF_INET == cs->addr_inbound->sin_family)
519 GNUNET_asprintf(&cs->addr_inbound_str,"%s:%u",address,ntohs(cs->addr_inbound->sin_port));
522 if ( AF_INET6 == cs->addr_inbound->sin_family)
524 GNUNET_asprintf(&cs->addr_inbound_str,"[%s]:%u",address,ntohs(cs->addr_inbound->sin_port));
528 if (cs->msgtok==NULL)
529 cs->msgtok = GNUNET_SERVER_mst_create (GNUNET_SERVER_MAX_MESSAGE_SIZE, &messageTokenizerCallback, cs);
531 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"HTTP Daemon has new an incoming `%s' request from peer `%s'\n",method, GNUNET_i2s(&cs->partner));
535 cs = *httpSessionCache;
537 /* Is it a PUT or a GET request */
538 if (0 == strcmp (MHD_HTTP_METHOD_PUT, method))
541 if ((*upload_data_size == 0) && (cs->is_put_in_progress == GNUNET_NO))
543 if (cs->pending_inbound_msg.bytes_recv !=0 )
545 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
546 _("Incoming message from peer `%s', while existing message with %u bytes was not forwarded to transport'\n"),
547 GNUNET_i2s(&cs->partner), cs->pending_inbound_msg.bytes_recv);
548 cs->pending_inbound_msg.bytes_recv = 0;
551 cs->is_put_in_progress = GNUNET_YES;
552 cs->is_bad_request = GNUNET_NO;
556 if ((*upload_data_size > 0) && (cs->is_bad_request != GNUNET_YES))
558 if (*upload_data_size + cs->pending_inbound_msg.bytes_recv <= GNUNET_SERVER_MAX_MESSAGE_SIZE)
560 /* copy uploaded data to buffer */
562 res = GNUNET_SERVER_mst_receive(cs->msgtok, cs, upload_data,*upload_data_size, GNUNET_YES, GNUNET_NO);
563 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"%u bytes forwarded to MST: result: %u\n",*upload_data_size, res);
564 cs->pending_inbound_msg.bytes_recv += *upload_data_size;
565 *upload_data_size = 0;
570 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);
571 cs->is_bad_request = GNUNET_YES;
572 /* (*upload_data_size) bytes not processed */
577 if ((cs->is_put_in_progress == GNUNET_YES) && (cs->is_bad_request == GNUNET_YES))
579 *upload_data_size = 0;
580 response = MHD_create_response_from_data (strlen (HTTP_PUT_RESPONSE),HTTP_PUT_RESPONSE, MHD_NO, MHD_NO);
581 res = MHD_queue_response (session, MHD_HTTP_REQUEST_ENTITY_TOO_LARGE, response);
584 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Sent HTTP/1.1: 413 Request Entity Too Large as PUT Response\n");
585 cs->is_bad_request = GNUNET_NO;
586 cs->is_put_in_progress =GNUNET_NO;
587 cs->pending_inbound_msg.bytes_recv = 0;
589 MHD_destroy_response (response);
593 /* Transmission of all data complete */
594 if ((*upload_data_size == 0) && (cs->is_put_in_progress == GNUNET_YES) && (cs->is_bad_request == GNUNET_NO))
596 send_error_to_client = GNUNET_YES;
597 if (cs->pending_inbound_msg.bytes_recv >= sizeof (struct GNUNET_MessageHeader))
598 send_error_to_client = GNUNET_NO;
600 if (send_error_to_client == GNUNET_NO)
602 response = MHD_create_response_from_data (strlen (HTTP_PUT_RESPONSE),HTTP_PUT_RESPONSE, MHD_NO, MHD_NO);
603 res = MHD_queue_response (session, MHD_HTTP_OK, response);
604 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Sent HTTP/1.1: 200 OK as PUT Response\n",HTTP_PUT_RESPONSE, strlen (HTTP_PUT_RESPONSE), res );
605 MHD_destroy_response (response);
609 response = MHD_create_response_from_data (strlen (HTTP_PUT_RESPONSE),HTTP_PUT_RESPONSE, MHD_NO, MHD_NO);
610 res = MHD_queue_response (session, MHD_HTTP_BAD_REQUEST, response);
611 MHD_destroy_response (response);
612 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Sent HTTP/1.1: 400 BAD REQUEST as PUT Response\n");
614 cs->is_put_in_progress = GNUNET_NO;
615 cs->is_bad_request = GNUNET_NO;
616 cs->pending_inbound_msg.bytes_recv = 0;
620 if ( 0 == strcmp (MHD_HTTP_METHOD_GET, method) )
622 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Got GET Request\n");
623 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"URL: `%s'\n",url);
624 response = MHD_create_response_from_data (strlen (HTTP_PUT_RESPONSE),HTTP_PUT_RESPONSE, MHD_NO, MHD_NO);
625 res = MHD_queue_response (session, MHD_HTTP_OK, response);
626 MHD_destroy_response (response);
634 * Call MHD to process pending ipv4 requests and then go back
635 * and schedule the next run.
637 static void http_server_daemon_v4_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
639 * Call MHD to process pending ipv6 requests and then go back
640 * and schedule the next run.
642 static void http_server_daemon_v6_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
645 * Function that queries MHD's select sets and
646 * starts the task waiting for them.
648 static GNUNET_SCHEDULER_TaskIdentifier
649 http_server_daemon_prepare (void * cls, struct MHD_Daemon *daemon_handle)
651 struct Plugin *plugin = cls;
652 GNUNET_SCHEDULER_TaskIdentifier ret;
656 struct GNUNET_NETWORK_FDSet *wrs;
657 struct GNUNET_NETWORK_FDSet *wws;
658 struct GNUNET_NETWORK_FDSet *wes;
660 unsigned long long timeout;
662 struct GNUNET_TIME_Relative tv;
664 GNUNET_assert(cls !=NULL);
665 ret = GNUNET_SCHEDULER_NO_TASK;
669 wrs = GNUNET_NETWORK_fdset_create ();
670 wes = GNUNET_NETWORK_fdset_create ();
671 wws = GNUNET_NETWORK_fdset_create ();
673 GNUNET_assert (MHD_YES ==
674 MHD_get_fdset (daemon_handle,
679 haveto = MHD_get_timeout (daemon_handle, &timeout);
680 if (haveto == MHD_YES)
681 tv.value = (uint64_t) timeout;
683 tv = GNUNET_TIME_UNIT_FOREVER_REL;
684 GNUNET_NETWORK_fdset_copy_native (wrs, &rs, max);
685 GNUNET_NETWORK_fdset_copy_native (wws, &ws, max);
686 GNUNET_NETWORK_fdset_copy_native (wes, &es, max);
687 if (daemon_handle == plugin->http_server_daemon_v4)
689 ret = GNUNET_SCHEDULER_add_select (plugin->env->sched,
690 GNUNET_SCHEDULER_PRIORITY_DEFAULT,
691 GNUNET_SCHEDULER_NO_TASK,
695 &http_server_daemon_v4_run,
698 if (daemon_handle == plugin->http_server_daemon_v6)
700 ret = GNUNET_SCHEDULER_add_select (plugin->env->sched,
701 GNUNET_SCHEDULER_PRIORITY_DEFAULT,
702 GNUNET_SCHEDULER_NO_TASK,
706 &http_server_daemon_v6_run,
709 GNUNET_NETWORK_fdset_destroy (wrs);
710 GNUNET_NETWORK_fdset_destroy (wws);
711 GNUNET_NETWORK_fdset_destroy (wes);
716 * Call MHD to process pending requests and then go back
717 * and schedule the next run.
719 static void http_server_daemon_v4_run (void *cls,
720 const struct GNUNET_SCHEDULER_TaskContext *tc)
722 struct Plugin *plugin = cls;
724 GNUNET_assert(cls !=NULL);
725 if (plugin->http_server_task_v4 != GNUNET_SCHEDULER_NO_TASK)
726 plugin->http_server_task_v4 = GNUNET_SCHEDULER_NO_TASK;
728 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
731 GNUNET_assert (MHD_YES == MHD_run (plugin->http_server_daemon_v4));
732 plugin->http_server_task_v4 = http_server_daemon_prepare (plugin, plugin->http_server_daemon_v4);
738 * Call MHD to process pending requests and then go back
739 * and schedule the next run.
741 static void http_server_daemon_v6_run (void *cls,
742 const struct GNUNET_SCHEDULER_TaskContext *tc)
744 struct Plugin *plugin = cls;
746 GNUNET_assert(cls !=NULL);
747 if (plugin->http_server_task_v6 != GNUNET_SCHEDULER_NO_TASK)
748 plugin->http_server_task_v6 = GNUNET_SCHEDULER_NO_TASK;
750 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
753 GNUNET_assert (MHD_YES == MHD_run (plugin->http_server_daemon_v6));
754 plugin->http_server_task_v6 = http_server_daemon_prepare (plugin, plugin->http_server_daemon_v6);
759 * Removes a message from the linked list of messages
760 * @param ses session to remove message from
761 * @param msg message to remove
762 * @return GNUNET_SYSERR if msg not found, GNUNET_OK on success
765 static int remove_http_message(struct Session * ses, struct HTTP_Message * msg)
767 GNUNET_CONTAINER_DLL_remove(ses->pending_outbound_msg_head,ses->pending_outbound_msg_tail,msg);
768 GNUNET_free (msg->dest_url);
774 static size_t header_function( void *ptr, size_t size, size_t nmemb, void *stream)
777 size_t len = size * nmemb;
780 if ((size * nmemb) < SIZE_MAX)
781 tmp = GNUNET_malloc (len+1);
783 if ((tmp != NULL) && (len > 0))
788 if (tmp[len-2] == 13)
792 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Header: `%s'\n",tmp);
802 * Callback method used with libcurl
803 * Method is called when libcurl needs to read data during sending
804 * @param stream pointer where to write data
805 * @param size size of an individual element
806 * @param nmemb count of elements that can be written to the buffer
807 * @param ptr source pointer, passed to the libcurl handle
808 * @return bytes written to stream
810 static size_t send_read_callback(void *stream, size_t size, size_t nmemb, void *ptr)
812 struct Session * ses = ptr;
813 struct HTTP_Message * msg = ses->pending_outbound_msg_tail;
818 if (( msg->pos < msg->size))
820 /* data fit in buffer */
821 if ((msg->size - msg->pos) <= (size * nmemb))
823 len = (msg->size - msg->pos);
824 memcpy(stream, &msg->buf[msg->pos], len);
831 memcpy(stream, &msg->buf[msg->pos], len);
836 /* no data to send */
845 * Callback method used with libcurl
846 * Method is called when libcurl needs to write data during sending
847 * @param stream pointer where to write data
848 * @param size size of an individual element
849 * @param nmemb count of elements that can be written to the buffer
850 * @param ptr destination pointer, passed to the libcurl handle
851 * @return bytes read from stream
853 static size_t send_write_callback( void *stream, size_t size, size_t nmemb, void *ptr)
857 if ((size * nmemb) < SIZE_MAX)
858 data = GNUNET_malloc(size*nmemb +1);
861 memcpy( data, stream, size*nmemb);
862 data[size*nmemb] = '\0';
865 return (size * nmemb);
870 * Function setting up file descriptors and scheduling task to run
871 * @param ses session to send data to
872 * @return bytes sent to peer
874 static size_t send_prepare(void *cls, struct Session* ses );
877 * Function setting up curl handle and selecting message to send
878 * @param ses session to send data to
879 * @return bytes sent to peer
881 static ssize_t send_select_init (void *cls, struct Session* ses , struct HTTP_Connection *con)
883 struct Plugin *plugin = cls;
886 struct HTTP_Message * msg;
888 /* already connected, no need to initiate connection */
889 if (con->connected == GNUNET_YES)
893 /* not connected, initiate connection */
894 GNUNET_assert(cls !=NULL);
895 if ( NULL == con->curl_handle)
896 con->curl_handle = curl_easy_init();
897 GNUNET_assert (con->curl_handle != NULL);
899 GNUNET_assert (NULL != con->pending_msgs_tail);
900 msg = con->pending_msgs_tail;
903 curl_easy_setopt(con->curl_handle, CURLOPT_VERBOSE, 1L);
905 curl_easy_setopt(con->curl_handle, CURLOPT_URL, con->url);
906 curl_easy_setopt(con->curl_handle, CURLOPT_PUT, 1L);
907 curl_easy_setopt(con->curl_handle, CURLOPT_HEADERFUNCTION, &header_function);
908 curl_easy_setopt(con->curl_handle, CURLOPT_WRITEHEADER, con);
909 curl_easy_setopt(con->curl_handle, CURLOPT_READFUNCTION, send_read_callback);
910 curl_easy_setopt(con->curl_handle, CURLOPT_READDATA, con);
911 curl_easy_setopt(con->curl_handle, CURLOPT_WRITEFUNCTION, send_write_callback);
912 curl_easy_setopt(con->curl_handle, CURLOPT_READDATA, con);
913 curl_easy_setopt(con->curl_handle, CURLOPT_INFILESIZE_LARGE, (curl_off_t) msg->size);
914 curl_easy_setopt(con->curl_handle, CURLOPT_TIMEOUT, GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT);
915 GNUNET_assert (CURLE_OK == curl_easy_setopt(con->curl_handle, CURLOPT_PRIVATE, ses));
916 curl_easy_setopt(con->curl_handle, CURLOPT_CONNECTTIMEOUT, HTTP_CONNECT_TIMEOUT);
917 curl_easy_setopt(con->curl_handle, CURLOPT_BUFFERSIZE, GNUNET_SERVER_MAX_MESSAGE_SIZE);
919 mret = curl_multi_add_handle(plugin->multi_handle, con->curl_handle);
920 if (mret != CURLM_OK)
922 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
923 _("%s failed at %s:%d: `%s'\n"),
924 "curl_multi_add_handle", __FILE__, __LINE__,
925 curl_multi_strerror (mret));
928 bytes_sent = send_prepare (plugin, ses);
932 static void send_execute (void *cls,
933 const struct GNUNET_SCHEDULER_TaskContext *tc)
935 struct Plugin *plugin = cls;
936 static unsigned int handles_last_run;
940 struct Session * cs = NULL;
943 GNUNET_assert(cls !=NULL);
944 plugin->http_server_task_send = GNUNET_SCHEDULER_NO_TASK;
945 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
951 mret = curl_multi_perform (plugin->multi_handle, &running);
952 if (running < handles_last_run)
957 msg = curl_multi_info_read (plugin->multi_handle, &running);
958 GNUNET_break (msg != NULL);
961 /* get session for affected curl handle */
962 GNUNET_assert ( msg->easy_handle != NULL );
963 curl_easy_getinfo(msg->easy_handle, CURLINFO_PRIVATE, &cs);
964 GNUNET_assert ( cs != NULL );
965 GNUNET_assert ( cs->pending_outbound_msg_tail != NULL );
970 if ( (msg->data.result != CURLE_OK) &&
971 (msg->data.result != CURLE_GOT_NOTHING) )
973 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
974 _("%s failed for `%s' at %s:%d: `%s'\n"),
975 "curl_multi_perform",
976 GNUNET_i2s(&cs->partner),
979 curl_easy_strerror (msg->data.result));
980 /* sending msg failed*/
981 if (( NULL != cs->pending_outbound_msg_tail) && ( NULL != cs->pending_outbound_msg_tail->transmit_cont))
982 cs->pending_outbound_msg_tail->transmit_cont (cs->pending_outbound_msg_tail->transmit_cont_cls,&cs->partner,GNUNET_SYSERR);
986 GNUNET_assert (CURLE_OK == curl_easy_getinfo(msg->easy_handle, CURLINFO_RESPONSE_CODE, &http_result));
987 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
988 "Send to peer `%s' completed with code %u\n", GNUNET_i2s(&cs->partner), http_result );
990 curl_easy_cleanup(cs->curl_handle);
991 cs->curl_handle=NULL;
993 /* Calling transmit continuation */
994 if (( NULL != cs->pending_outbound_msg_tail) && (NULL != cs->pending_outbound_msg_tail->transmit_cont))
996 /* HTTP 1xx : Last message before here was informational */
997 if ((http_result >=100) && (http_result < 200))
998 cs->pending_outbound_msg_tail->transmit_cont (cs->pending_outbound_msg_tail->transmit_cont_cls,&cs->partner,GNUNET_OK);
999 /* HTTP 2xx: successful operations */
1000 if ((http_result >=200) && (http_result < 300))
1001 cs->pending_outbound_msg_tail->transmit_cont (cs->pending_outbound_msg_tail->transmit_cont_cls,&cs->partner,GNUNET_OK);
1002 /* HTTP 3xx..5xx: error */
1003 if ((http_result >=300) && (http_result < 600))
1004 cs->pending_outbound_msg_tail->transmit_cont (cs->pending_outbound_msg_tail->transmit_cont_cls,&cs->partner,GNUNET_SYSERR);
1008 if (GNUNET_OK != remove_http_message(cs, cs->pending_outbound_msg_tail))
1009 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Message could not be removed from session `%s'", GNUNET_i2s(&cs->partner));
1010 /* send pending messages */
1011 if (cs->pending_outbound_msg_tail!= NULL)
1013 send_select_init (plugin, cs, NULL);
1021 while ( (running > 0) );
1023 handles_last_run = running;
1025 while (mret == CURLM_CALL_MULTI_PERFORM);
1026 send_prepare(plugin, cls);
1031 * Function setting up file descriptors and scheduling task to run
1032 * @param ses session to send data to
1033 * @return bytes sent to peer
1035 static size_t send_prepare(void *cls, struct Session* ses )
1037 struct Plugin *plugin = cls;
1042 struct GNUNET_NETWORK_FDSet *grs;
1043 struct GNUNET_NETWORK_FDSet *gws;
1047 GNUNET_assert(cls !=NULL);
1052 mret = curl_multi_fdset (plugin->multi_handle, &rs, &ws, &es, &max);
1053 if (mret != CURLM_OK)
1055 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1056 _("%s failed at %s:%d: `%s'\n"),
1057 "curl_multi_fdset", __FILE__, __LINE__,
1058 curl_multi_strerror (mret));
1061 mret = curl_multi_timeout (plugin->multi_handle, &to);
1062 if (mret != CURLM_OK)
1064 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1065 _("%s failed at %s:%d: `%s'\n"),
1066 "curl_multi_timeout", __FILE__, __LINE__,
1067 curl_multi_strerror (mret));
1071 grs = GNUNET_NETWORK_fdset_create ();
1072 gws = GNUNET_NETWORK_fdset_create ();
1073 GNUNET_NETWORK_fdset_copy_native (grs, &rs, max + 1);
1074 GNUNET_NETWORK_fdset_copy_native (gws, &ws, max + 1);
1075 plugin->http_server_task_send = GNUNET_SCHEDULER_add_select (plugin->env->sched,
1076 GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1077 GNUNET_SCHEDULER_NO_TASK,
1078 GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 0),
1083 GNUNET_NETWORK_fdset_destroy (gws);
1084 GNUNET_NETWORK_fdset_destroy (grs);
1086 /* FIXME: return bytes REALLY sent */
1091 * Check if session for this peer is already existing, otherwise create it
1092 * @param cls the plugin used
1093 * @param p peer to get session for
1094 * @return session found or created
1096 static struct Session * session_get (void * cls, const struct GNUNET_PeerIdentity *p)
1098 struct Plugin *plugin = cls;
1102 cs = GNUNET_CONTAINER_multihashmap_get (plugin->sessions, &p->hashPubKey);
1105 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1106 "Session `%s' found\n", GNUNET_i2s(p));
1110 cs = create_session(plugin, NULL, 0, NULL, 0, p);
1111 res = GNUNET_CONTAINER_multihashmap_put ( plugin->sessions,
1112 &cs->partner.hashPubKey,
1114 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
1115 if (res == GNUNET_OK)
1116 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1117 "New Session `%s' inserted\n", GNUNET_i2s(p));
1122 static char * create_url(void * cls, const void * addr, size_t addrlen)
1124 struct Plugin *plugin = cls;
1128 GNUNET_assert ((addr!=NULL) && (addrlen != 0));
1129 if (addrlen == (sizeof (struct IPv4HttpAddress)))
1131 address = GNUNET_malloc(INET_ADDRSTRLEN + 1);
1132 inet_ntop(AF_INET, &((struct IPv4HttpAddress *) addr)->ipv4_addr,address,INET_ADDRSTRLEN);
1133 GNUNET_asprintf (&url,
1136 ntohs(((struct IPv4HttpAddress *) addr)->u_port),
1137 (char *) (&plugin->my_ascii_hash_ident));
1138 GNUNET_free(address);
1140 else if (addrlen == (sizeof (struct IPv6HttpAddress)))
1142 address = GNUNET_malloc(INET6_ADDRSTRLEN + 1);
1143 inet_ntop(AF_INET6, &((struct IPv6HttpAddress *) addr)->ipv6_addr,address,INET6_ADDRSTRLEN);
1144 GNUNET_asprintf(&url,
1147 ntohs(((struct IPv6HttpAddress *) addr)->u6_port),
1148 (char *) (&plugin->my_ascii_hash_ident));
1149 GNUNET_free(address);
1155 * Check if session already knows this address for a outbound connection to this peer
1156 * If address not in session, add it to the session
1157 * @param cls the plugin used
1158 * @param p the session
1159 * @param addr address
1160 * @param addr_len address length
1161 * @return GNUNET_NO if address not known, GNUNET_YES if known
1163 static struct HTTP_Connection * session_check_address (void * cls, struct Session *cs, const void * addr, size_t addr_len)
1165 struct Plugin *plugin = cls;
1166 struct HTTP_Connection * cc = cs->outbound_addresses_head;
1167 struct HTTP_Connection * con = NULL;
1169 GNUNET_assert((addr_len == sizeof (struct IPv4HttpAddress)) || (addr_len == sizeof (struct IPv6HttpAddress)));
1173 if (addr_len == cc->addrlen)
1175 if (0 == memcmp(cc->addr, addr, addr_len))
1185 con = GNUNET_malloc(sizeof(struct HTTP_Connection) + addr_len);
1186 con->addrlen = addr_len;
1188 con->url=create_url(plugin, addr, addr_len);
1189 con->connected = GNUNET_NO;
1190 memcpy(con->addr, addr, addr_len);
1191 GNUNET_CONTAINER_DLL_insert(cs->outbound_addresses_head,cs->outbound_addresses_tail,con);
1197 * Function that can be used by the transport service to transmit
1198 * a message using the plugin.
1200 * @param cls closure
1201 * @param target who should receive this message
1202 * @param priority how important is the message
1203 * @param msgbuf the message to transmit
1204 * @param msgbuf_size number of bytes in 'msgbuf'
1205 * @param to when should we time out
1206 * @param session which session must be used (or NULL for "any")
1207 * @param addr the address to use (can be NULL if the plugin
1208 * is "on its own" (i.e. re-use existing TCP connection))
1209 * @param addrlen length of the address in bytes
1210 * @param force_address GNUNET_YES if the plugin MUST use the given address,
1211 * otherwise the plugin may use other addresses or
1212 * existing connections (if available)
1213 * @param cont continuation to call once the message has
1214 * been transmitted (or if the transport is ready
1215 * for the next transmission call; or if the
1216 * peer disconnected...)
1217 * @param cont_cls closure for cont
1218 * @return number of bytes used (on the physical network, with overheads);
1219 * -1 on hard errors (i.e. address invalid); 0 is a legal value
1220 * and does NOT mean that the message was not transmitted (DV)
1223 http_plugin_send (void *cls,
1224 const struct GNUNET_PeerIdentity *target,
1227 unsigned int priority,
1228 struct GNUNET_TIME_Relative to,
1229 struct Session *session,
1233 GNUNET_TRANSPORT_TransmitContinuation cont,
1236 struct Plugin *plugin = cls;
1240 struct HTTP_Message *msg;
1241 struct HTTP_Connection *con;
1244 GNUNET_assert(cls !=NULL);
1248 /* get session from hashmap */
1249 cs = session_get(plugin, target);
1250 con = session_check_address(plugin, cs, addr, addrlen);
1253 msg = GNUNET_malloc (sizeof (struct HTTP_Message) + msgbuf_size);
1255 msg->size = msgbuf_size;
1257 msg->buf = (char *) &msg[1];
1258 msg->dest_url = url;
1259 msg->transmit_cont = cont;
1260 msg->transmit_cont_cls = cont_cls;
1261 memcpy (msg->buf,msgbuf, msgbuf_size);
1263 /* must use this address */
1264 if (force_address == GNUNET_YES)
1266 /* enqueue in connection message queue */
1267 GNUNET_CONTAINER_DLL_insert(con->pending_msgs_head,con->pending_msgs_tail,msg);
1269 /* can use existing connection to send */
1272 /* enqueue in connection message queue */
1273 GNUNET_CONTAINER_DLL_insert(con->pending_msgs_head,con->pending_msgs_tail,msg);
1276 return send_select_init (plugin, cs, con);
1279 /* insert created message in double linked list of pending messages */
1281 GNUNET_CONTAINER_DLL_insert (cs->pending_outbound_msg_head, cs->pending_outbound_msg_tail, msg);
1283 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));
1284 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"HTTP Plugin: url `%s'\n",url);
1285 if (msg == cs->pending_outbound_msg_tail)
1287 return send_select_init (plugin, cs);
1296 * Function that can be used to force the plugin to disconnect
1297 * from the given peer and cancel all previous transmissions
1298 * (and their continuationc).
1300 * @param cls closure
1301 * @param target peer from which to disconnect
1304 http_plugin_disconnect (void *cls,
1305 const struct GNUNET_PeerIdentity *target)
1307 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"HTTP Plugin: http_plugin_disconnect\n");
1308 // struct Plugin *plugin = cls;
1314 * Convert the transports address to a nice, human-readable
1317 * @param cls closure
1318 * @param type name of the transport that generated the address
1319 * @param addr one of the addresses of the host, NULL for the last address
1320 * the specific address format depends on the transport
1321 * @param addrlen length of the address
1322 * @param numeric should (IP) addresses be displayed in numeric form?
1323 * @param timeout after how long should we give up?
1324 * @param asc function to call on each string
1325 * @param asc_cls closure for asc
1328 http_plugin_address_pretty_printer (void *cls,
1333 struct GNUNET_TIME_Relative timeout,
1334 GNUNET_TRANSPORT_AddressStringCallback
1337 const struct IPv4HttpAddress *t4;
1338 const struct IPv6HttpAddress *t6;
1339 struct sockaddr_in a4;
1340 struct sockaddr_in6 a6;
1346 GNUNET_assert(cls !=NULL);
1347 if (addrlen == sizeof (struct IPv6HttpAddress))
1349 address = GNUNET_malloc (INET6_ADDRSTRLEN);
1351 a6.sin6_addr = t6->ipv6_addr;
1352 inet_ntop(AF_INET6, &(a6.sin6_addr),address,INET6_ADDRSTRLEN);
1353 port = ntohs(t6->u6_port);
1355 else if (addrlen == sizeof (struct IPv4HttpAddress))
1357 address = GNUNET_malloc (INET_ADDRSTRLEN);
1359 a4.sin_addr.s_addr = t4->ipv4_addr;
1360 inet_ntop(AF_INET, &(a4.sin_addr),address,INET_ADDRSTRLEN);
1361 port = ntohs(t4->u_port);
1365 /* invalid address */
1366 GNUNET_break_op (0);
1367 asc (asc_cls, NULL);
1370 res = GNUNET_asprintf(&ret,"http://%s:%u/",address,port);
1371 GNUNET_free (address);
1372 GNUNET_assert(res != 0);
1380 * Another peer has suggested an address for this
1381 * peer and transport plugin. Check that this could be a valid
1382 * address. If so, consider adding it to the list
1385 * @param cls closure
1386 * @param addr pointer to the address
1387 * @param addrlen length of addr
1388 * @return GNUNET_OK if this is a plausible address for this peer
1392 http_plugin_address_suggested (void *cls,
1393 void *addr, size_t addrlen)
1395 struct Plugin *plugin = cls;
1396 struct IPv4HttpAddress *v4;
1397 struct IPv6HttpAddress *v6;
1400 GNUNET_assert(cls !=NULL);
1401 if ((addrlen != sizeof (struct IPv4HttpAddress)) &&
1402 (addrlen != sizeof (struct IPv6HttpAddress)))
1404 return GNUNET_SYSERR;
1406 if (addrlen == sizeof (struct IPv4HttpAddress))
1408 v4 = (struct IPv4HttpAddress *) addr;
1409 if (INADDR_LOOPBACK == ntohl(v4->ipv4_addr))
1411 return GNUNET_SYSERR;
1413 port = ntohs (v4->u_port);
1414 if (port != plugin->port_inbound)
1416 return GNUNET_SYSERR;
1421 v6 = (struct IPv6HttpAddress *) addr;
1422 if (IN6_IS_ADDR_LINKLOCAL (&v6->ipv6_addr))
1424 return GNUNET_SYSERR;
1426 port = ntohs (v6->u6_port);
1427 if (port != plugin->port_inbound)
1429 return GNUNET_SYSERR;
1439 * Function called for a quick conversion of the binary address to
1440 * a numeric address. Note that the caller must not free the
1441 * address and that the next call to this function is allowed
1442 * to override the address again.
1444 * @param cls closure
1445 * @param addr binary address
1446 * @param addrlen length of the address
1447 * @return string representing the same address
1450 http_plugin_address_to_string (void *cls,
1454 const struct IPv4HttpAddress *t4;
1455 const struct IPv6HttpAddress *t6;
1456 struct sockaddr_in a4;
1457 struct sockaddr_in6 a6;
1463 GNUNET_assert(cls !=NULL);
1464 if (addrlen == sizeof (struct IPv6HttpAddress))
1466 address = GNUNET_malloc (INET6_ADDRSTRLEN);
1468 a6.sin6_addr = t6->ipv6_addr;
1469 inet_ntop(AF_INET6, &(a6.sin6_addr),address,INET6_ADDRSTRLEN);
1470 port = ntohs(t6->u6_port);
1472 else if (addrlen == sizeof (struct IPv4HttpAddress))
1474 address = GNUNET_malloc (INET_ADDRSTRLEN);
1476 a4.sin_addr.s_addr = t4->ipv4_addr;
1477 inet_ntop(AF_INET, &(a4.sin_addr),address,INET_ADDRSTRLEN);
1478 port = ntohs(t4->u_port);
1482 /* invalid address */
1485 res = GNUNET_asprintf(&ret,"%s:%u",address,port);
1486 GNUNET_free (address);
1487 GNUNET_assert(res != 0);
1492 * Add the IP of our network interface to the list of
1493 * our external IP addresses.
1495 * @param cls the 'struct Plugin*'
1496 * @param name name of the interface
1497 * @param isDefault do we think this may be our default interface
1498 * @param addr address of the interface
1499 * @param addrlen number of bytes in addr
1500 * @return GNUNET_OK to continue iterating
1503 process_interfaces (void *cls,
1506 const struct sockaddr *addr, socklen_t addrlen)
1508 struct Plugin *plugin = cls;
1509 struct IPv4HttpAddress t4;
1510 struct IPv6HttpAddress t6;
1515 GNUNET_assert(cls !=NULL);
1516 af = addr->sa_family;
1519 if (INADDR_LOOPBACK == ntohl(((struct sockaddr_in *) addr)->sin_addr.s_addr))
1521 /* skip loopback addresses */
1524 t4.ipv4_addr = ((struct sockaddr_in *) addr)->sin_addr.s_addr;
1525 t4.u_port = htons (plugin->port_inbound);
1529 else if (af == AF_INET6)
1531 if (IN6_IS_ADDR_LINKLOCAL (&((struct sockaddr_in6 *) addr)->sin6_addr))
1533 /* skip link local addresses */
1536 if (IN6_IS_ADDR_LOOPBACK (&((struct sockaddr_in6 *) addr)->sin6_addr))
1538 /* skip loopback addresses */
1541 memcpy (&t6.ipv6_addr,
1542 &((struct sockaddr_in6 *) addr)->sin6_addr,
1543 sizeof (struct in6_addr));
1544 t6.u6_port = htons (plugin->port_inbound);
1553 plugin->env->notify_address(plugin->env->cls,"http",arg, args, GNUNET_TIME_UNIT_FOREVER_REL);
1557 int hashMapFreeIterator (void *cls, const GNUNET_HashCode *key, void *value)
1559 struct Session * cs = value;
1561 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Freeing session for peer `%s'\n",GNUNET_i2s(&cs->partner));
1563 /* freeing messages */
1564 struct HTTP_Message *cur;
1565 struct HTTP_Message *tmp;
1566 cur = cs->pending_outbound_msg_head;
1571 GNUNET_free_non_null(cur->dest_url);
1575 GNUNET_SERVER_mst_destroy (cs->msgtok);
1576 GNUNET_free_non_null (cs->addr_in);
1577 GNUNET_free_non_null (cs->addr_out);
1583 * Exit point from the plugin.
1586 libgnunet_plugin_transport_http_done (void *cls)
1588 struct GNUNET_TRANSPORT_PluginFunctions *api = cls;
1589 struct Plugin *plugin = api->cls;
1592 GNUNET_assert(cls !=NULL);
1593 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Unloading http plugin...\n");
1595 if ( plugin->http_server_task_v4 != GNUNET_SCHEDULER_NO_TASK)
1597 GNUNET_SCHEDULER_cancel(plugin->env->sched, plugin->http_server_task_v4);
1598 plugin->http_server_task_v4 = GNUNET_SCHEDULER_NO_TASK;
1601 if ( plugin->http_server_task_v6 != GNUNET_SCHEDULER_NO_TASK)
1603 GNUNET_SCHEDULER_cancel(plugin->env->sched, plugin->http_server_task_v6);
1604 plugin->http_server_task_v6 = GNUNET_SCHEDULER_NO_TASK;
1607 if ( plugin->http_server_task_send != GNUNET_SCHEDULER_NO_TASK)
1609 GNUNET_SCHEDULER_cancel(plugin->env->sched, plugin->http_server_task_send);
1610 plugin->http_server_task_send = GNUNET_SCHEDULER_NO_TASK;
1613 if (plugin->http_server_daemon_v4 != NULL)
1615 MHD_stop_daemon (plugin->http_server_daemon_v4);
1616 plugin->http_server_daemon_v4 = NULL;
1618 if (plugin->http_server_daemon_v6 != NULL)
1620 MHD_stop_daemon (plugin->http_server_daemon_v6);
1621 plugin->http_server_daemon_v6 = NULL;
1624 /* free all sessions */
1625 GNUNET_CONTAINER_multihashmap_iterate (plugin->sessions,
1626 &hashMapFreeIterator,
1629 GNUNET_CONTAINER_multihashmap_destroy (plugin->sessions);
1631 mret = curl_multi_cleanup(plugin->multi_handle);
1632 if ( CURLM_OK != mret)
1633 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"curl multihandle clean up failed");
1635 GNUNET_free (plugin);
1642 * Entry point for the plugin.
1645 libgnunet_plugin_transport_http_init (void *cls)
1647 struct GNUNET_TRANSPORT_PluginEnvironment *env = cls;
1648 struct Plugin *plugin;
1649 struct GNUNET_TRANSPORT_PluginFunctions *api;
1650 struct GNUNET_TIME_Relative gn_timeout;
1651 long long unsigned int port;
1653 GNUNET_assert(cls !=NULL);
1654 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting http plugin...\n");
1656 plugin = GNUNET_malloc (sizeof (struct Plugin));
1658 plugin->sessions = NULL;
1659 api = GNUNET_malloc (sizeof (struct GNUNET_TRANSPORT_PluginFunctions));
1661 api->send = &http_plugin_send;
1662 api->disconnect = &http_plugin_disconnect;
1663 api->address_pretty_printer = &http_plugin_address_pretty_printer;
1664 api->check_address = &http_plugin_address_suggested;
1665 api->address_to_string = &http_plugin_address_to_string;
1667 /* Hashing our identity to use it in URLs */
1668 GNUNET_CRYPTO_hash_to_enc ( &(plugin->env->my_identity->hashPubKey), &plugin->my_ascii_hash_ident);
1670 /* Reading port number from config file */
1672 GNUNET_CONFIGURATION_get_value_number (env->cfg,
1678 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
1681 ("Require valid port number for transport plugin `%s' in configuration!\n"),
1683 libgnunet_plugin_transport_http_done (api);
1686 GNUNET_assert ((port > 0) && (port <= 65535));
1687 plugin->port_inbound = port;
1688 gn_timeout = GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT;
1689 if ((plugin->http_server_daemon_v4 == NULL) && (plugin->http_server_daemon_v6 == NULL) && (port != 0))
1691 plugin->http_server_daemon_v6 = MHD_start_daemon (MHD_USE_IPv6,
1693 &acceptPolicyCallback,
1694 plugin , &accessHandlerCallback, plugin,
1695 MHD_OPTION_CONNECTION_LIMIT, (unsigned int) 16,
1696 MHD_OPTION_PER_IP_CONNECTION_LIMIT, (unsigned int) 1,
1697 MHD_OPTION_CONNECTION_TIMEOUT, (gn_timeout.value / 1000),
1698 MHD_OPTION_CONNECTION_MEMORY_LIMIT, (size_t) (16 * 1024),
1699 MHD_OPTION_NOTIFY_COMPLETED, &requestCompletedCallback, NULL,
1701 plugin->http_server_daemon_v4 = MHD_start_daemon (MHD_NO_FLAG,
1703 &acceptPolicyCallback,
1704 plugin , &accessHandlerCallback, plugin,
1705 MHD_OPTION_CONNECTION_LIMIT, (unsigned int) 16,
1706 MHD_OPTION_PER_IP_CONNECTION_LIMIT, (unsigned int) 1,
1707 MHD_OPTION_CONNECTION_TIMEOUT, (gn_timeout.value / 1000),
1708 MHD_OPTION_CONNECTION_MEMORY_LIMIT, (size_t) (16 * 1024),
1709 MHD_OPTION_NOTIFY_COMPLETED, &requestCompletedCallback, NULL,
1712 if (plugin->http_server_daemon_v4 != NULL)
1713 plugin->http_server_task_v4 = http_server_daemon_prepare (plugin, plugin->http_server_daemon_v4);
1714 if (plugin->http_server_daemon_v6 != NULL)
1715 plugin->http_server_task_v6 = http_server_daemon_prepare (plugin, plugin->http_server_daemon_v6);
1717 if (plugin->http_server_task_v4 != GNUNET_SCHEDULER_NO_TASK)
1718 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting MHD with IPv4 on port %u\n",port);
1719 else if (plugin->http_server_task_v6 != GNUNET_SCHEDULER_NO_TASK)
1720 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting MHD with IPv4 and IPv6 on port %u\n",port);
1723 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"No MHD was started, transport plugin not functional!\n");
1724 libgnunet_plugin_transport_http_done (api);
1728 /* Initializing cURL */
1729 plugin->multi_handle = curl_multi_init();
1730 if ( NULL == plugin->multi_handle )
1732 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
1734 _("Could not initialize curl multi handle, failed to start http plugin!\n"),
1736 libgnunet_plugin_transport_http_done (api);
1740 plugin->sessions = GNUNET_CONTAINER_multihashmap_create (10);
1741 GNUNET_OS_network_interfaces_list (&process_interfaces, plugin);
1746 /* end of plugin_transport_http.c */