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_NO
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.
80 uint32_t ipv4_addr GNUNET_PACKED;
83 * Port number, in network byte order.
85 uint16_t u_port GNUNET_PACKED;
91 * Network format for IPv6 addresses.
93 struct IPv6HttpAddress
98 struct in6_addr ipv6_addr GNUNET_PACKED;
101 * Port number, in network byte order.
103 uint16_t u6_port GNUNET_PACKED;
109 * Message to send using http
114 * next pointer for double linked list
116 struct HTTP_Message * next;
119 * previous pointer for double linked list
121 struct HTTP_Message * prev;
124 * buffer containing data to send
129 * amount of data already sent
139 * Continuation function to call once the transmission buffer
140 * has again space available. NULL if there is no
141 * continuation to call.
143 GNUNET_TRANSPORT_TransmitContinuation transmit_cont;
146 * Closure for transmit_cont.
148 void *transmit_cont_cls;
152 struct HTTP_Connection_out
154 struct HTTP_Connection_out * next;
156 struct HTTP_Connection_out * prev;
161 struct HTTP_Message * pending_msgs_head;
162 struct HTTP_Message * pending_msgs_tail;
165 unsigned int connected;
166 unsigned int send_paused;
169 * curl handle for this ransmission
172 struct Session * session;
175 struct HTTP_Connection_in
177 struct HTTP_Connection_in * next;
179 struct HTTP_Connection_in * prev;
184 unsigned int connected;
185 unsigned int send_paused;
187 struct GNUNET_SERVER_MessageStreamTokenizer * msgtok;
189 struct Session * session;
192 * Is there a HTTP/PUT in progress?
194 int is_put_in_progress;
197 * Is the http request invalid?
204 * Session handle for connections.
212 struct SessionHeader header;
215 * Stored in a linked list.
217 struct Session *next;
220 * Pointer to the global plugin struct.
222 struct Plugin *plugin;
225 * To whom are we talking to (set to our identity
226 * if we are still waiting for the welcome message)
228 struct GNUNET_PeerIdentity identity;
231 * Sender's ip address to distinguish between incoming connections
242 * Did we initiate the connection (GNUNET_YES) or the other peer (GNUNET_NO)?
247 * At what time did we reset last_received last?
249 struct GNUNET_TIME_Absolute last_quota_update;
252 * How many bytes have we received since the "last_quota_update"
255 uint64_t last_received;
258 * Number of bytes per ms that this peer is allowed
266 struct GNUNET_CRYPTO_HashAsciiEncoded hash;
269 * curl handle for outbound transmissions
274 * Message tokenizer for incoming data
276 //struct GNUNET_SERVER_MessageStreamTokenizer * msgtok;
278 struct HTTP_Connection_out *outbound_connections_head;
279 struct HTTP_Connection_out *outbound_connections_tail;
281 struct HTTP_Connection_in *inbound_connections_head;
282 struct HTTP_Connection_in *inbound_connections_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;
341 * Create a new session
342 * @param cls plugin as closure
343 * @param addr_in address the peer is using inbound
344 * @param addr_len_in address length
345 * @param addr_out address the peer is using outbound
346 * @param addr_len_out address length
347 * @param peer identity
348 * @return created session object
350 static struct Session *
351 create_session (void * cls,
356 const struct GNUNET_PeerIdentity *peer)
358 struct Plugin *plugin = cls;
359 struct Session * cs = GNUNET_malloc ( sizeof( struct Session) );
361 GNUNET_assert(cls !=NULL);
364 cs->addr_in = GNUNET_malloc (addrlen_in);
365 cs->addr_in_len = addrlen_in;
366 memcpy(cs->addr_in,addr_in,addrlen_in);
369 if (addrlen_out != 0)
371 cs->addr_out = GNUNET_malloc (addrlen_out);
372 cs->addr_out_len = addrlen_out;
373 memcpy(cs->addr_out,addr_out,addrlen_out);
376 memcpy(&cs->identity, peer, sizeof (struct GNUNET_PeerIdentity));
377 GNUNET_CRYPTO_hash_to_enc(&cs->identity.hashPubKey,&(cs->hash));
378 cs->outbound_connections_head = NULL;
379 cs->outbound_connections_tail = NULL;
384 * Check if session for this peer is already existing, otherwise create it
385 * @param cls the plugin used
386 * @param p peer to get session for
387 * @return session found or created
389 static struct Session * session_get (void * cls, const struct GNUNET_PeerIdentity *p)
391 struct Plugin *plugin = cls;
395 cs = GNUNET_CONTAINER_multihashmap_get (plugin->sessions, &p->hashPubKey);
398 cs = create_session(plugin, NULL, 0, NULL, 0, p);
399 res = GNUNET_CONTAINER_multihashmap_put ( plugin->sessions,
400 &cs->identity.hashPubKey,
402 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
403 if (res == GNUNET_OK)
404 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
405 "New Session `%s' inserted\n", GNUNET_i2s(p));
410 static char * create_url(void * cls, const void * addr, size_t addrlen)
412 struct Plugin *plugin = cls;
416 GNUNET_assert ((addr!=NULL) && (addrlen != 0));
417 if (addrlen == (sizeof (struct IPv4HttpAddress)))
419 address = GNUNET_malloc(INET_ADDRSTRLEN + 1);
420 inet_ntop(AF_INET, &((struct IPv4HttpAddress *) addr)->ipv4_addr,address,INET_ADDRSTRLEN);
421 GNUNET_asprintf (&url,
424 ntohs(((struct IPv4HttpAddress *) addr)->u_port),
425 (char *) (&plugin->my_ascii_hash_ident));
426 GNUNET_free(address);
428 else if (addrlen == (sizeof (struct IPv6HttpAddress)))
430 address = GNUNET_malloc(INET6_ADDRSTRLEN + 1);
431 inet_ntop(AF_INET6, &((struct IPv6HttpAddress *) addr)->ipv6_addr,address,INET6_ADDRSTRLEN);
432 GNUNET_asprintf(&url,
435 ntohs(((struct IPv6HttpAddress *) addr)->u6_port),
436 (char *) (&plugin->my_ascii_hash_ident));
437 GNUNET_free(address);
443 * Check if session already knows this address for a outbound connection to this peer
444 * If address not in session, add it to the session
445 * @param cls the plugin used
446 * @param cs the session
447 * @param addr address
448 * @param addr_len address length
449 * @return the found or created address
451 static struct HTTP_Connection_out * session_check_outbound_address (void * cls, struct Session *cs, const void * addr, size_t addr_len)
453 struct Plugin *plugin = cls;
454 struct HTTP_Connection_out * cc = cs->outbound_connections_head;
455 struct HTTP_Connection_out * con = NULL;
457 GNUNET_assert((addr_len == sizeof (struct IPv4HttpAddress)) || (addr_len == sizeof (struct IPv6HttpAddress)));
461 if (addr_len == cc->addrlen)
463 if (0 == memcmp(cc->addr, addr, addr_len))
474 con = GNUNET_malloc(sizeof(struct HTTP_Connection_out) + addr_len);
475 con->addrlen = addr_len;
477 con->url=create_url(plugin, addr, addr_len);
478 con->connected = GNUNET_NO;
480 memcpy(con->addr, addr, addr_len);
481 GNUNET_CONTAINER_DLL_insert(cs->outbound_connections_head,cs->outbound_connections_tail,con);
482 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Created new connection %X to peer `%s'\n",con,GNUNET_i2s(&cs->identity));
489 * Check if session already knows this address for a inbound connection to this peer
490 * If address not in session, add it to the session
491 * @param cls the plugin used
492 * @param cs the session
493 * @param addr address
494 * @param addr_len address length
495 * @return the found or created address
497 static struct HTTP_Connection_in * session_check_inbound_address (void * cls, struct Session *cs, const void * addr, size_t addr_len)
499 //struct Plugin *plugin = cls;
500 struct HTTP_Connection_in * cc = cs->inbound_connections_head;
501 struct HTTP_Connection_in * con = NULL;
503 GNUNET_assert((addr_len == sizeof (struct IPv4HttpAddress)) || (addr_len == sizeof (struct IPv6HttpAddress)));
507 if (addr_len == cc->addrlen)
509 if (0 == memcmp(cc->addr, addr, addr_len))
517 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"No connection info for this address was found\n",GNUNET_i2s(&cs->identity));
520 con = GNUNET_malloc(sizeof(struct HTTP_Connection_in) + addr_len);
521 con->addrlen = addr_len;
523 con->connected = GNUNET_NO;
525 memcpy(con->addr, addr, addr_len);
526 GNUNET_CONTAINER_DLL_insert(cs->inbound_connections_head,cs->inbound_connections_tail,con);
533 * Callback called by MHD when a connection is terminated
535 static void requestCompletedCallback (void *cls, struct MHD_Connection * connection, void **httpSessionCache)
537 struct HTTP_Connection_in * con;
539 con = *httpSessionCache;
542 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection from peer `%s' was terminated\n",GNUNET_i2s(&con->session->identity));
543 /* session set to inactive */
544 con->is_put_in_progress = GNUNET_NO;
545 con->is_bad_request = GNUNET_NO;
549 static void messageTokenizerCallback (void *cls,
551 const struct GNUNET_MessageHeader *message)
553 struct HTTP_Connection_in * con = cls;
554 GNUNET_assert(con != NULL);
556 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
557 "Received message with type %u and size %u from `%s'\n",
558 ntohs(message->type),
559 ntohs(message->size),
560 GNUNET_i2s(&(con->session->identity)));
561 con->session->plugin->env->receive (con->session->plugin->env->cls,
562 &con->session->identity,
563 message, 1, con->session,
569 * Check if ip is allowed to connect.
572 acceptPolicyCallback (void *cls,
573 const struct sockaddr *addr, socklen_t addr_len)
576 struct Plugin *plugin = cls;
578 /* Every connection is accepted, nothing more to do here */
582 int server_read_callback (void *cls, uint64_t pos, char *buf, int max)
585 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "server_read_callback\n");
590 * Process GET or PUT request received via MHD. For
591 * GET, queue response that will send back our pending
592 * messages. For PUT, process incoming data and send
593 * to GNUnet core. In either case, check if a session
594 * already exists and create a new one if not.
597 accessHandlerCallback (void *cls,
598 struct MHD_Connection *mhd_connection,
602 const char *upload_data,
603 size_t * upload_data_size, void **httpSessionCache)
605 struct Plugin *plugin = cls;
606 struct MHD_Response *response;
608 struct HTTP_Connection_in * con;
609 const union MHD_ConnectionInfo * conn_info;
610 struct sockaddr_in *addrin;
611 struct sockaddr_in6 *addrin6;
612 char address[INET6_ADDRSTRLEN+14];
613 struct GNUNET_PeerIdentity pi_in;
615 int send_error_to_client;
616 struct IPv4HttpAddress ipv4addr;
617 struct IPv6HttpAddress ipv6addr;
619 GNUNET_assert(cls !=NULL);
620 send_error_to_client = GNUNET_NO;
621 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"accessHandlerCallback\n");
622 if (NULL == *httpSessionCache)
624 /* check url for peer identity , if invalid send HTTP 404*/
625 res = GNUNET_CRYPTO_hash_from_string ( &url[1], &(pi_in.hashPubKey));
626 if ( GNUNET_SYSERR == res )
628 response = MHD_create_response_from_data (strlen (HTTP_ERROR_RESPONSE),HTTP_ERROR_RESPONSE, MHD_NO, MHD_NO);
629 res = MHD_queue_response (mhd_connection, MHD_HTTP_NOT_FOUND, response);
630 MHD_destroy_response (response);
632 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Peer has no valid ident, sent HTTP 1.1/404\n");
634 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Peer has no valid ident, could not send error\n");
640 con = *httpSessionCache;
644 /* Is it a PUT or a GET request */
645 if (0 == strcmp (MHD_HTTP_METHOD_PUT, method))
647 if (NULL == *httpSessionCache)
649 /* get session for peer identity */
650 cs = session_get (plugin ,&pi_in);
652 conn_info = MHD_get_connection_info(mhd_connection, MHD_CONNECTION_INFO_CLIENT_ADDRESS );
653 /* Incoming IPv4 connection */
654 if ( AF_INET == conn_info->client_addr->sin_family)
656 addrin = conn_info->client_addr;
657 inet_ntop(addrin->sin_family, &(addrin->sin_addr),address,INET_ADDRSTRLEN);
658 memcpy(&ipv4addr.ipv4_addr,&(addrin->sin_addr),sizeof(struct in_addr));
659 ipv4addr.u_port = addrin->sin_port;
660 con = session_check_inbound_address (plugin, cs, (const void *) &ipv4addr, sizeof (struct IPv4HttpAddress));
662 /* Incoming IPv6 connection */
663 if ( AF_INET6 == conn_info->client_addr->sin_family)
665 addrin6 = (struct sockaddr_in6 *) conn_info->client_addr;
666 inet_ntop(addrin6->sin6_family, &(addrin6->sin6_addr),address,INET6_ADDRSTRLEN);
667 memcpy(&ipv6addr.ipv6_addr,&(addrin6->sin6_addr),sizeof(struct in_addr));
668 ipv6addr.u6_port = addrin6->sin6_port;
669 con = session_check_inbound_address (plugin, cs, &ipv6addr, sizeof (struct IPv6HttpAddress));
671 /* Set closure and update current session*/
673 *httpSessionCache = con;
674 if (con->msgtok==NULL)
675 con->msgtok = GNUNET_SERVER_mst_create (GNUNET_SERVER_MAX_MESSAGE_SIZE - 1, &messageTokenizerCallback, con);
677 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"HTTP Daemon has new an incoming `%s' request from peer `%s' (`%s')\n",method, GNUNET_i2s(&cs->identity),address);
680 if ((*upload_data_size == 0) && (con->is_put_in_progress==GNUNET_NO))
682 con->is_put_in_progress = GNUNET_YES;
686 /* Transmission of all data complete */
687 if ((*upload_data_size == 0) && (con->is_put_in_progress == GNUNET_YES))
689 response = MHD_create_response_from_data (strlen (HTTP_PUT_RESPONSE),HTTP_PUT_RESPONSE, MHD_NO, MHD_NO);
690 res = MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
691 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Sent HTTP/1.1: 200 OK as PUT Response\n",HTTP_PUT_RESPONSE, strlen (HTTP_PUT_RESPONSE), res );
692 MHD_destroy_response (response);
695 con->is_put_in_progress = GNUNET_NO;
696 con->is_bad_request = GNUNET_NO;
701 if ((*upload_data_size > 0) && (con->is_put_in_progress == GNUNET_YES))
703 res = GNUNET_SERVER_mst_receive(con->msgtok, con, upload_data,*upload_data_size, GNUNET_NO, GNUNET_NO);
704 (*upload_data_size) = 0;
710 if ( 0 == strcmp (MHD_HTTP_METHOD_GET, method) )
712 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Got GET Request\n");
713 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"URL: `%s'\n",url);
715 /* check url for peer identity , if invalid send HTTP 404*/
716 res = GNUNET_CRYPTO_hash_from_string ( &url[1], &(pi_in.hashPubKey));
718 if ( GNUNET_SYSERR == res )
720 response = MHD_create_response_from_data (strlen (HTTP_ERROR_RESPONSE),HTTP_ERROR_RESPONSE, MHD_NO, MHD_NO);
721 res = MHD_queue_response (mhd_connection, MHD_HTTP_NOT_FOUND, response);
722 MHD_destroy_response (response);
724 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Peer has no valid ident, sent HTTP 1.1/404\n");
726 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Peer has no valid ident, could not send error\n");
730 response = MHD_create_response_from_callback(-1,32 * 1024, &server_read_callback, cs, NULL);
731 res = MHD_queue_response (mhd_connection, MHD_HTTP_NOT_FOUND, response);
732 MHD_destroy_response (response);
742 * Call MHD to process pending ipv4 requests and then go back
743 * and schedule the next run.
745 static void http_server_daemon_v4_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
747 * Call MHD to process pending ipv6 requests and then go back
748 * and schedule the next run.
750 static void http_server_daemon_v6_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
753 * Function that queries MHD's select sets and
754 * starts the task waiting for them.
756 static GNUNET_SCHEDULER_TaskIdentifier
757 http_server_daemon_prepare (void * cls, struct MHD_Daemon *daemon_handle)
759 struct Plugin *plugin = cls;
760 GNUNET_SCHEDULER_TaskIdentifier ret;
764 struct GNUNET_NETWORK_FDSet *wrs;
765 struct GNUNET_NETWORK_FDSet *wws;
766 struct GNUNET_NETWORK_FDSet *wes;
768 unsigned long long timeout;
770 struct GNUNET_TIME_Relative tv;
772 GNUNET_assert(cls !=NULL);
773 ret = GNUNET_SCHEDULER_NO_TASK;
777 wrs = GNUNET_NETWORK_fdset_create ();
778 wes = GNUNET_NETWORK_fdset_create ();
779 wws = GNUNET_NETWORK_fdset_create ();
781 GNUNET_assert (MHD_YES ==
782 MHD_get_fdset (daemon_handle,
787 haveto = MHD_get_timeout (daemon_handle, &timeout);
788 if (haveto == MHD_YES)
789 tv.value = (uint64_t) timeout;
791 tv = GNUNET_TIME_UNIT_FOREVER_REL;
792 GNUNET_NETWORK_fdset_copy_native (wrs, &rs, max);
793 GNUNET_NETWORK_fdset_copy_native (wws, &ws, max);
794 GNUNET_NETWORK_fdset_copy_native (wes, &es, max);
795 if (daemon_handle == plugin->http_server_daemon_v4)
797 ret = GNUNET_SCHEDULER_add_select (plugin->env->sched,
798 GNUNET_SCHEDULER_PRIORITY_DEFAULT,
799 GNUNET_SCHEDULER_NO_TASK,
803 &http_server_daemon_v4_run,
806 if (daemon_handle == plugin->http_server_daemon_v6)
808 ret = GNUNET_SCHEDULER_add_select (plugin->env->sched,
809 GNUNET_SCHEDULER_PRIORITY_DEFAULT,
810 GNUNET_SCHEDULER_NO_TASK,
814 &http_server_daemon_v6_run,
817 GNUNET_NETWORK_fdset_destroy (wrs);
818 GNUNET_NETWORK_fdset_destroy (wws);
819 GNUNET_NETWORK_fdset_destroy (wes);
824 * Call MHD to process pending requests and then go back
825 * and schedule the next run.
827 static void http_server_daemon_v4_run (void *cls,
828 const struct GNUNET_SCHEDULER_TaskContext *tc)
830 struct Plugin *plugin = cls;
832 GNUNET_assert(cls !=NULL);
833 if (plugin->http_server_task_v4 != GNUNET_SCHEDULER_NO_TASK)
834 plugin->http_server_task_v4 = GNUNET_SCHEDULER_NO_TASK;
836 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
839 GNUNET_assert (MHD_YES == MHD_run (plugin->http_server_daemon_v4));
840 plugin->http_server_task_v4 = http_server_daemon_prepare (plugin, plugin->http_server_daemon_v4);
846 * Call MHD to process pending requests and then go back
847 * and schedule the next run.
849 static void http_server_daemon_v6_run (void *cls,
850 const struct GNUNET_SCHEDULER_TaskContext *tc)
852 struct Plugin *plugin = cls;
854 GNUNET_assert(cls !=NULL);
855 if (plugin->http_server_task_v6 != GNUNET_SCHEDULER_NO_TASK)
856 plugin->http_server_task_v6 = GNUNET_SCHEDULER_NO_TASK;
858 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
861 GNUNET_assert (MHD_YES == MHD_run (plugin->http_server_daemon_v6));
862 plugin->http_server_task_v6 = http_server_daemon_prepare (plugin, plugin->http_server_daemon_v6);
867 * Removes a message from the linked list of messages
868 * @param con connection to remove message from
869 * @param msg message to remove
870 * @return GNUNET_SYSERR if msg not found, GNUNET_OK on success
873 static int remove_http_message(struct HTTP_Connection_out * con, struct HTTP_Message * msg)
875 GNUNET_CONTAINER_DLL_remove(con->pending_msgs_head,con->pending_msgs_tail,msg);
881 static size_t header_function( void *ptr, size_t size, size_t nmemb, void *stream)
884 size_t len = size * nmemb;
887 if ((size * nmemb) < SIZE_MAX)
888 tmp = GNUNET_malloc (len+1);
890 if ((tmp != NULL) && (len > 0))
895 if (tmp[len-2] == 13)
899 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Header: `%s'\n",tmp);
909 * Callback method used with libcurl
910 * Method is called when libcurl needs to read data during sending
911 * @param stream pointer where to write data
912 * @param size size of an individual element
913 * @param nmemb count of elements that can be written to the buffer
914 * @param ptr source pointer, passed to the libcurl handle
915 * @return bytes written to stream
917 static size_t send_read_callback(void *stream, size_t size, size_t nmemb, void *ptr)
919 struct HTTP_Connection_out * con = ptr;
920 struct HTTP_Message * msg = con->pending_msgs_tail;
924 if (con->pending_msgs_tail == NULL)
926 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection: %X: No Message to send, pausing connection\n",con);
927 con->send_paused = GNUNET_YES;
928 return CURL_READFUNC_PAUSE;
931 msg = con->pending_msgs_tail;
933 if (msg->pos < msg->size)
935 /* data fit in buffer */
936 if ((msg->size - msg->pos) <= (size * nmemb))
938 len = (msg->size - msg->pos);
939 memcpy(stream, &msg->buf[msg->pos], len);
946 memcpy(stream, &msg->buf[msg->pos], len);
951 /* no data to send */
957 if ( msg->pos == msg->size)
959 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection: %X: Message with %u bytes sent, removing message from queue \n",con, msg->pos);
960 /* Calling transmit continuation */
961 if (( NULL != con->pending_msgs_tail) && (NULL != con->pending_msgs_tail->transmit_cont))
962 msg->transmit_cont (con->pending_msgs_tail->transmit_cont_cls,&(con->session)->identity,GNUNET_OK);
963 remove_http_message(con, msg);
969 * Callback method used with libcurl
970 * Method is called when libcurl needs to write data during sending
971 * @param stream pointer where to write data
972 * @param size size of an individual element
973 * @param nmemb count of elements that can be written to the buffer
974 * @param ptr destination pointer, passed to the libcurl handle
975 * @return bytes read from stream
977 static size_t send_write_callback( void *stream, size_t size, size_t nmemb, void *ptr)
981 if ((size * nmemb) < SIZE_MAX)
982 data = GNUNET_malloc(size*nmemb +1);
985 memcpy( data, stream, size*nmemb);
986 data[size*nmemb] = '\0';
989 return (size * nmemb);
994 * Function setting up file descriptors and scheduling task to run
996 * @param ses session to send data to
997 * @return bytes sent to peer
999 static size_t send_schedule(void *cls, struct Session* ses );
1002 * Function setting up curl handle and selecting message to send
1004 * @param ses session to send data to
1005 * @param con connection
1006 * @return bytes sent to peer
1008 static ssize_t send_initiate (void *cls, struct Session* ses , struct HTTP_Connection_out *con)
1010 struct Plugin *plugin = cls;
1013 struct HTTP_Message * msg;
1014 struct GNUNET_TIME_Relative timeout = GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT;
1016 /* already connected, no need to initiate connection */
1017 if ((con->connected == GNUNET_YES) && (con->curl_handle != NULL) && (con->send_paused == GNUNET_NO))
1019 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection: %X: active, enqueueing message\n",con);
1023 if ((con->connected == GNUNET_YES) && (con->curl_handle != NULL) && (con->send_paused == GNUNET_YES))
1025 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection: %X: paused, unpausing existing connection and enqueueing message\n",con);
1026 curl_easy_pause(con->curl_handle,CURLPAUSE_CONT);
1027 con->send_paused=GNUNET_NO;
1031 /* not connected, initiate connection */
1032 GNUNET_assert(cls !=NULL);
1034 if ( NULL == con->curl_handle)
1035 con->curl_handle = curl_easy_init();
1036 GNUNET_assert (con->curl_handle != NULL);
1037 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection: %X: not existing, creating new connection\n",con);
1039 GNUNET_assert (NULL != con->pending_msgs_tail);
1040 msg = con->pending_msgs_tail;
1043 curl_easy_setopt(con->curl_handle, CURLOPT_VERBOSE, 1L);
1045 curl_easy_setopt(con->curl_handle, CURLOPT_URL, con->url);
1046 curl_easy_setopt(con->curl_handle, CURLOPT_PUT, 1L);
1047 curl_easy_setopt(con->curl_handle, CURLOPT_HEADERFUNCTION, &header_function);
1048 curl_easy_setopt(con->curl_handle, CURLOPT_WRITEHEADER, con);
1049 curl_easy_setopt(con->curl_handle, CURLOPT_READFUNCTION, send_read_callback);
1050 curl_easy_setopt(con->curl_handle, CURLOPT_READDATA, con);
1051 curl_easy_setopt(con->curl_handle, CURLOPT_WRITEFUNCTION, send_write_callback);
1052 curl_easy_setopt(con->curl_handle, CURLOPT_READDATA, con);
1053 curl_easy_setopt(con->curl_handle, CURLOPT_TIMEOUT, (long) timeout.value);
1054 curl_easy_setopt(con->curl_handle, CURLOPT_PRIVATE, con);
1055 curl_easy_setopt(con->curl_handle, CURLOPT_CONNECTTIMEOUT, HTTP_CONNECT_TIMEOUT_DBG);
1056 curl_easy_setopt(con->curl_handle, CURLOPT_BUFFERSIZE, GNUNET_SERVER_MAX_MESSAGE_SIZE);
1058 mret = curl_multi_add_handle(plugin->multi_handle, con->curl_handle);
1059 if (mret != CURLM_OK)
1061 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1062 _("%s failed at %s:%d: `%s'\n"),
1063 "curl_multi_add_handle", __FILE__, __LINE__,
1064 curl_multi_strerror (mret));
1068 con->connected = GNUNET_YES;
1070 bytes_sent = send_schedule (plugin, ses);
1074 static void send_execute (void *cls,
1075 const struct GNUNET_SCHEDULER_TaskContext *tc)
1077 struct Plugin *plugin = cls;
1078 static unsigned int handles_last_run;
1080 struct CURLMsg *msg;
1082 struct HTTP_Connection_out * con = NULL;
1083 struct Session * cs = NULL;
1086 GNUNET_assert(cls !=NULL);
1087 plugin->http_server_task_send = GNUNET_SCHEDULER_NO_TASK;
1088 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
1094 mret = curl_multi_perform (plugin->multi_handle, &running);
1095 if (running < handles_last_run)
1100 msg = curl_multi_info_read (plugin->multi_handle, &running);
1101 GNUNET_break (msg != NULL);
1104 /* get session for affected curl handle */
1105 GNUNET_assert ( msg->easy_handle != NULL );
1106 curl_easy_getinfo(msg->easy_handle, CURLINFO_PRIVATE, (char *) &con);
1107 GNUNET_assert ( con != NULL );
1109 GNUNET_assert ( cs != NULL );
1114 if ( (msg->data.result != CURLE_OK) &&
1115 (msg->data.result != CURLE_GOT_NOTHING) )
1117 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
1118 _("%s failed for `%s' connection %X at %s:%d: `%s'\n"),
1119 "curl_multi_perform",
1120 GNUNET_i2s(&cs->identity),con,
1123 curl_easy_strerror (msg->data.result));
1124 /* sending msg failed*/
1125 con->connected = GNUNET_NO;
1126 curl_easy_cleanup(con->curl_handle);
1127 con->curl_handle=NULL;
1128 if (( NULL != con->pending_msgs_tail) && ( NULL != con->pending_msgs_tail->transmit_cont))
1129 con->pending_msgs_tail->transmit_cont (con->pending_msgs_tail->transmit_cont_cls,&con->session->identity,GNUNET_SYSERR);
1134 GNUNET_assert (CURLE_OK == curl_easy_getinfo(msg->easy_handle, CURLINFO_RESPONSE_CODE, &http_result));
1135 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1136 "Send to peer `%s' completed with code %u\n", GNUNET_i2s(&cs->identity), http_result );
1138 curl_easy_cleanup(con->curl_handle);
1139 con->connected = GNUNET_NO;
1140 con->curl_handle=NULL;
1142 /* Calling transmit continuation */
1143 if (( NULL != con->pending_msgs_tail) && (NULL != con->pending_msgs_tail->transmit_cont))
1145 /* HTTP 1xx : Last message before here was informational */
1146 if ((http_result >=100) && (http_result < 200))
1147 con->pending_msgs_tail->transmit_cont (con->pending_msgs_tail->transmit_cont_cls,&cs->identity,GNUNET_OK);
1148 /* HTTP 2xx: successful operations */
1149 if ((http_result >=200) && (http_result < 300))
1150 con->pending_msgs_tail->transmit_cont (con->pending_msgs_tail->transmit_cont_cls,&cs->identity,GNUNET_OK);
1151 /* HTTP 3xx..5xx: error */
1152 if ((http_result >=300) && (http_result < 600))
1153 con->pending_msgs_tail->transmit_cont (con->pending_msgs_tail->transmit_cont_cls,&cs->identity,GNUNET_SYSERR);
1156 if (con->pending_msgs_tail != NULL)
1158 if (con->pending_msgs_tail->pos>0)
1159 remove_http_message(con, con->pending_msgs_tail);
1160 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Message could not be removed from session `%s'\n", GNUNET_i2s(&cs->identity));
1168 while ( (running > 0) );
1170 handles_last_run = running;
1172 while (mret == CURLM_CALL_MULTI_PERFORM);
1173 send_schedule(plugin, cls);
1178 * Function setting up file descriptors and scheduling task to run
1179 * @param ses session to send data to
1180 * @return bytes sent to peer
1182 static size_t send_schedule(void *cls, struct Session* ses )
1184 struct Plugin *plugin = cls;
1189 struct GNUNET_NETWORK_FDSet *grs;
1190 struct GNUNET_NETWORK_FDSet *gws;
1194 GNUNET_assert(cls !=NULL);
1199 mret = curl_multi_fdset (plugin->multi_handle, &rs, &ws, &es, &max);
1200 if (mret != CURLM_OK)
1202 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1203 _("%s failed at %s:%d: `%s'\n"),
1204 "curl_multi_fdset", __FILE__, __LINE__,
1205 curl_multi_strerror (mret));
1208 mret = curl_multi_timeout (plugin->multi_handle, &to);
1209 if (mret != CURLM_OK)
1211 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1212 _("%s failed at %s:%d: `%s'\n"),
1213 "curl_multi_timeout", __FILE__, __LINE__,
1214 curl_multi_strerror (mret));
1218 grs = GNUNET_NETWORK_fdset_create ();
1219 gws = GNUNET_NETWORK_fdset_create ();
1220 GNUNET_NETWORK_fdset_copy_native (grs, &rs, max + 1);
1221 GNUNET_NETWORK_fdset_copy_native (gws, &ws, max + 1);
1222 plugin->http_server_task_send = GNUNET_SCHEDULER_add_select (plugin->env->sched,
1223 GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1224 GNUNET_SCHEDULER_NO_TASK,
1225 GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 0),
1230 GNUNET_NETWORK_fdset_destroy (gws);
1231 GNUNET_NETWORK_fdset_destroy (grs);
1233 /* FIXME: return bytes REALLY sent */
1239 * Function that can be used by the transport service to transmit
1240 * a message using the plugin.
1242 * @param cls closure
1243 * @param target who should receive this message
1244 * @param priority how important is the message
1245 * @param msgbuf the message to transmit
1246 * @param msgbuf_size number of bytes in 'msgbuf'
1247 * @param to when should we time out
1248 * @param session which session must be used (or NULL for "any")
1249 * @param addr the address to use (can be NULL if the plugin
1250 * is "on its own" (i.e. re-use existing TCP connection))
1251 * @param addrlen length of the address in bytes
1252 * @param force_address GNUNET_YES if the plugin MUST use the given address,
1253 * otherwise the plugin may use other addresses or
1254 * existing connections (if available)
1255 * @param cont continuation to call once the message has
1256 * been transmitted (or if the transport is ready
1257 * for the next transmission call; or if the
1258 * peer disconnected...)
1259 * @param cont_cls closure for cont
1260 * @return number of bytes used (on the physical network, with overheads);
1261 * -1 on hard errors (i.e. address invalid); 0 is a legal value
1262 * and does NOT mean that the message was not transmitted (DV)
1265 http_plugin_send (void *cls,
1266 const struct GNUNET_PeerIdentity *target,
1269 unsigned int priority,
1270 struct GNUNET_TIME_Relative to,
1271 struct Session *session,
1275 GNUNET_TRANSPORT_TransmitContinuation cont,
1278 struct Plugin *plugin = cls;
1282 struct HTTP_Message *msg;
1283 struct HTTP_Connection_out *con;
1286 GNUNET_assert(cls !=NULL);
1290 /* get session from hashmap */
1291 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Transport tells me to send %u bytes to %s, %u\n", msgbuf_size, GNUNET_i2s(target),addrlen);
1292 cs = session_get(plugin, target);
1293 con = session_check_outbound_address(plugin, cs, addr, addrlen);
1294 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Transport tells me to send %u bytes to peer `%s'\n",msgbuf_size,GNUNET_i2s(&cs->identity));
1297 msg = GNUNET_malloc (sizeof (struct HTTP_Message) + msgbuf_size);
1299 msg->size = msgbuf_size;
1301 msg->buf = (char *) &msg[1];
1302 msg->transmit_cont = cont;
1303 msg->transmit_cont_cls = cont_cls;
1304 memcpy (msg->buf,msgbuf, msgbuf_size);
1306 /* must use this address */
1307 if (force_address == GNUNET_YES)
1309 /* enqueue in connection message queue */
1310 GNUNET_CONTAINER_DLL_insert(con->pending_msgs_head,con->pending_msgs_tail,msg);
1312 /* can use existing connection to send */
1315 /* enqueue in connection message queue */
1316 GNUNET_CONTAINER_DLL_insert(con->pending_msgs_head,con->pending_msgs_tail,msg);
1318 return send_initiate (plugin, cs, con);
1324 * Function that can be used to force the plugin to disconnect
1325 * from the given peer and cancel all previous transmissions
1326 * (and their continuationc).
1328 * @param cls closure
1329 * @param target peer from which to disconnect
1332 http_plugin_disconnect (void *cls,
1333 const struct GNUNET_PeerIdentity *target)
1335 struct Plugin *plugin = cls;
1336 struct HTTP_Connection_out *con;
1339 /* get session from hashmap */
1340 cs = session_get(plugin, target);
1341 con = cs->outbound_connections_head;
1345 if (con->curl_handle!=NULL)
1346 curl_easy_cleanup(con->curl_handle);
1347 con->curl_handle=NULL;
1348 con->connected = GNUNET_NO;
1349 while (con->pending_msgs_head!=NULL)
1351 remove_http_message(con, con->pending_msgs_head);
1359 * Convert the transports address to a nice, human-readable
1362 * @param cls closure
1363 * @param type name of the transport that generated the address
1364 * @param addr one of the addresses of the host, NULL for the last address
1365 * the specific address format depends on the transport
1366 * @param addrlen length of the address
1367 * @param numeric should (IP) addresses be displayed in numeric form?
1368 * @param timeout after how long should we give up?
1369 * @param asc function to call on each string
1370 * @param asc_cls closure for asc
1373 http_plugin_address_pretty_printer (void *cls,
1378 struct GNUNET_TIME_Relative timeout,
1379 GNUNET_TRANSPORT_AddressStringCallback
1382 const struct IPv4HttpAddress *t4;
1383 const struct IPv6HttpAddress *t6;
1384 struct sockaddr_in a4;
1385 struct sockaddr_in6 a6;
1391 GNUNET_assert(cls !=NULL);
1392 if (addrlen == sizeof (struct IPv6HttpAddress))
1394 address = GNUNET_malloc (INET6_ADDRSTRLEN);
1396 a6.sin6_addr = t6->ipv6_addr;
1397 inet_ntop(AF_INET6, &(a6.sin6_addr),address,INET6_ADDRSTRLEN);
1398 port = ntohs(t6->u6_port);
1400 else if (addrlen == sizeof (struct IPv4HttpAddress))
1402 address = GNUNET_malloc (INET_ADDRSTRLEN);
1404 a4.sin_addr.s_addr = t4->ipv4_addr;
1405 inet_ntop(AF_INET, &(a4.sin_addr),address,INET_ADDRSTRLEN);
1406 port = ntohs(t4->u_port);
1410 /* invalid address */
1411 GNUNET_break_op (0);
1412 asc (asc_cls, NULL);
1415 res = GNUNET_asprintf(&ret,"http://%s:%u/",address,port);
1416 GNUNET_free (address);
1417 GNUNET_assert(res != 0);
1425 * Another peer has suggested an address for this
1426 * peer and transport plugin. Check that this could be a valid
1427 * address. If so, consider adding it to the list
1430 * @param cls closure
1431 * @param addr pointer to the address
1432 * @param addrlen length of addr
1433 * @return GNUNET_OK if this is a plausible address for this peer
1437 http_plugin_address_suggested (void *cls,
1438 const void *addr, size_t addrlen)
1440 struct Plugin *plugin = cls;
1441 struct IPv4HttpAddress *v4;
1442 struct IPv6HttpAddress *v6;
1445 GNUNET_assert(cls !=NULL);
1446 if ((addrlen != sizeof (struct IPv4HttpAddress)) &&
1447 (addrlen != sizeof (struct IPv6HttpAddress)))
1449 return GNUNET_SYSERR;
1451 if (addrlen == sizeof (struct IPv4HttpAddress))
1453 v4 = (struct IPv4HttpAddress *) addr;
1454 if (INADDR_LOOPBACK == ntohl(v4->ipv4_addr))
1456 return GNUNET_SYSERR;
1458 port = ntohs (v4->u_port);
1459 if (port != plugin->port_inbound)
1461 return GNUNET_SYSERR;
1466 v6 = (struct IPv6HttpAddress *) addr;
1467 if (IN6_IS_ADDR_LINKLOCAL (&v6->ipv6_addr))
1469 return GNUNET_SYSERR;
1471 port = ntohs (v6->u6_port);
1472 if (port != plugin->port_inbound)
1474 return GNUNET_SYSERR;
1482 * Function called for a quick conversion of the binary address to
1483 * a numeric address. Note that the caller must not free the
1484 * address and that the next call to this function is allowed
1485 * to override the address again.
1487 * @param cls closure
1488 * @param addr binary address
1489 * @param addrlen length of the address
1490 * @return string representing the same address
1493 http_plugin_address_to_string (void *cls,
1497 const struct IPv4HttpAddress *t4;
1498 const struct IPv6HttpAddress *t6;
1499 struct sockaddr_in a4;
1500 struct sockaddr_in6 a6;
1506 GNUNET_assert(cls !=NULL);
1507 if (addrlen == sizeof (struct IPv6HttpAddress))
1509 address = GNUNET_malloc (INET6_ADDRSTRLEN);
1511 a6.sin6_addr = t6->ipv6_addr;
1512 inet_ntop(AF_INET6, &(a6.sin6_addr),address,INET6_ADDRSTRLEN);
1513 port = ntohs(t6->u6_port);
1515 else if (addrlen == sizeof (struct IPv4HttpAddress))
1517 address = GNUNET_malloc (INET_ADDRSTRLEN);
1519 a4.sin_addr.s_addr = t4->ipv4_addr;
1520 inet_ntop(AF_INET, &(a4.sin_addr),address,INET_ADDRSTRLEN);
1521 port = ntohs(t4->u_port);
1525 /* invalid address */
1528 res = GNUNET_asprintf(&ret,"%s:%u",address,port);
1529 GNUNET_free (address);
1530 GNUNET_assert(res != 0);
1535 * Add the IP of our network interface to the list of
1536 * our external IP addresses.
1538 * @param cls the 'struct Plugin*'
1539 * @param name name of the interface
1540 * @param isDefault do we think this may be our default interface
1541 * @param addr address of the interface
1542 * @param addrlen number of bytes in addr
1543 * @return GNUNET_OK to continue iterating
1546 process_interfaces (void *cls,
1549 const struct sockaddr *addr, socklen_t addrlen)
1551 struct Plugin *plugin = cls;
1552 struct IPv4HttpAddress * t4;
1553 struct IPv6HttpAddress * t6;
1556 GNUNET_assert(cls !=NULL);
1557 af = addr->sa_family;
1560 t4 = GNUNET_malloc(sizeof(struct IPv4HttpAddress));
1561 if (INADDR_LOOPBACK == ntohl(((struct sockaddr_in *) addr)->sin_addr.s_addr))
1563 /* skip loopback addresses */
1566 t4->ipv4_addr = ((struct sockaddr_in *) addr)->sin_addr.s_addr;
1567 t4->u_port = htons (plugin->port_inbound);
1568 plugin->env->notify_address(plugin->env->cls,"http",t4, sizeof (struct IPv4HttpAddress), GNUNET_TIME_UNIT_FOREVER_REL);
1571 else if (af == AF_INET6)
1573 t6 = GNUNET_malloc(sizeof(struct IPv6HttpAddress));
1574 if (IN6_IS_ADDR_LINKLOCAL (&((struct sockaddr_in6 *) addr)->sin6_addr))
1576 /* skip link local addresses */
1579 if (IN6_IS_ADDR_LOOPBACK (&((struct sockaddr_in6 *) addr)->sin6_addr))
1581 /* skip loopback addresses */
1584 memcpy (&t6->ipv6_addr,
1585 &((struct sockaddr_in6 *) addr)->sin6_addr,
1586 sizeof (struct in6_addr));
1587 t6->u6_port = htons (plugin->port_inbound);
1588 plugin->env->notify_address(plugin->env->cls,"http",t6,sizeof (struct IPv6HttpAddress) , GNUNET_TIME_UNIT_FOREVER_REL);
1592 int hashMapFreeIterator (void *cls, const GNUNET_HashCode *key, void *value)
1594 struct Session * cs = value;
1595 struct HTTP_Connection_out * con = cs->outbound_connections_head;
1596 struct HTTP_Connection_out * tmp_con = cs->outbound_connections_head;
1597 struct HTTP_Message * msg = NULL;
1598 struct HTTP_Message * tmp_msg = NULL;
1600 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Freeing session for peer `%s'\n",GNUNET_i2s(&cs->identity));
1602 /* freeing connections */
1605 GNUNET_free(con->url);
1606 if (con->curl_handle!=NULL)
1607 curl_easy_cleanup(con->curl_handle);
1608 con->curl_handle = NULL;
1609 msg = con->pending_msgs_head;
1620 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"All sessions freed \n");
1627 * Exit point from the plugin.
1630 libgnunet_plugin_transport_http_done (void *cls)
1632 struct GNUNET_TRANSPORT_PluginFunctions *api = cls;
1633 struct Plugin *plugin = api->cls;
1636 GNUNET_assert(cls !=NULL);
1639 if ( plugin->http_server_task_v4 != GNUNET_SCHEDULER_NO_TASK)
1641 GNUNET_SCHEDULER_cancel(plugin->env->sched, plugin->http_server_task_v4);
1642 plugin->http_server_task_v4 = GNUNET_SCHEDULER_NO_TASK;
1645 if ( plugin->http_server_task_v6 != GNUNET_SCHEDULER_NO_TASK)
1647 GNUNET_SCHEDULER_cancel(plugin->env->sched, plugin->http_server_task_v6);
1648 plugin->http_server_task_v6 = GNUNET_SCHEDULER_NO_TASK;
1651 if ( plugin->http_server_task_send != GNUNET_SCHEDULER_NO_TASK)
1653 GNUNET_SCHEDULER_cancel(plugin->env->sched, plugin->http_server_task_send);
1654 plugin->http_server_task_send = GNUNET_SCHEDULER_NO_TASK;
1657 if (plugin->http_server_daemon_v4 != NULL)
1659 MHD_stop_daemon (plugin->http_server_daemon_v4);
1660 plugin->http_server_daemon_v4 = NULL;
1662 if (plugin->http_server_daemon_v6 != NULL)
1664 MHD_stop_daemon (plugin->http_server_daemon_v6);
1665 plugin->http_server_daemon_v6 = NULL;
1668 /* free all sessions */
1669 GNUNET_CONTAINER_multihashmap_iterate (plugin->sessions,
1670 &hashMapFreeIterator,
1673 GNUNET_CONTAINER_multihashmap_destroy (plugin->sessions);
1675 mret = curl_multi_cleanup(plugin->multi_handle);
1676 if ( CURLM_OK != mret)
1677 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"curl multihandle clean up failed");
1679 GNUNET_free (plugin);
1681 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Unload http plugin complete...\n");
1687 * Entry point for the plugin.
1690 libgnunet_plugin_transport_http_init (void *cls)
1692 struct GNUNET_TRANSPORT_PluginEnvironment *env = cls;
1693 struct Plugin *plugin;
1694 struct GNUNET_TRANSPORT_PluginFunctions *api;
1695 struct GNUNET_TIME_Relative gn_timeout;
1696 long long unsigned int port;
1698 GNUNET_assert(cls !=NULL);
1699 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting http plugin...\n");
1701 plugin = GNUNET_malloc (sizeof (struct Plugin));
1703 plugin->sessions = NULL;
1705 api = GNUNET_malloc (sizeof (struct GNUNET_TRANSPORT_PluginFunctions));
1707 api->send = &http_plugin_send;
1708 api->disconnect = &http_plugin_disconnect;
1709 api->address_pretty_printer = &http_plugin_address_pretty_printer;
1710 api->check_address = &http_plugin_address_suggested;
1711 api->address_to_string = &http_plugin_address_to_string;
1713 /* Hashing our identity to use it in URLs */
1714 GNUNET_CRYPTO_hash_to_enc ( &(plugin->env->my_identity->hashPubKey), &plugin->my_ascii_hash_ident);
1716 /* Reading port number from config file */
1718 GNUNET_CONFIGURATION_get_value_number (env->cfg,
1724 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
1727 ("Require valid port number for transport plugin `%s' in configuration!\n"),
1729 libgnunet_plugin_transport_http_done (api);
1732 GNUNET_assert ((port > 0) && (port <= 65535));
1733 plugin->port_inbound = port;
1734 gn_timeout = GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT;
1735 if ((plugin->http_server_daemon_v4 == NULL) && (plugin->http_server_daemon_v6 == NULL) && (port != 0))
1737 plugin->http_server_daemon_v6 = MHD_start_daemon (MHD_USE_IPv6,
1739 &acceptPolicyCallback,
1740 plugin , &accessHandlerCallback, plugin,
1741 MHD_OPTION_CONNECTION_LIMIT, (unsigned int) 16,
1742 MHD_OPTION_PER_IP_CONNECTION_LIMIT, (unsigned int) 1,
1743 MHD_OPTION_CONNECTION_TIMEOUT, (gn_timeout.value / 1000),
1744 MHD_OPTION_CONNECTION_MEMORY_LIMIT, (size_t) (16 * 1024),
1745 MHD_OPTION_NOTIFY_COMPLETED, &requestCompletedCallback, NULL,
1747 plugin->http_server_daemon_v4 = MHD_start_daemon (MHD_NO_FLAG,
1749 &acceptPolicyCallback,
1750 plugin , &accessHandlerCallback, plugin,
1751 MHD_OPTION_CONNECTION_LIMIT, (unsigned int) 16,
1752 MHD_OPTION_PER_IP_CONNECTION_LIMIT, (unsigned int) 1,
1753 MHD_OPTION_CONNECTION_TIMEOUT, (gn_timeout.value / 1000),
1754 MHD_OPTION_CONNECTION_MEMORY_LIMIT, (size_t) (16 * 1024),
1755 MHD_OPTION_NOTIFY_COMPLETED, &requestCompletedCallback, NULL,
1758 if (plugin->http_server_daemon_v4 != NULL)
1759 plugin->http_server_task_v4 = http_server_daemon_prepare (plugin, plugin->http_server_daemon_v4);
1760 if (plugin->http_server_daemon_v6 != NULL)
1761 plugin->http_server_task_v6 = http_server_daemon_prepare (plugin, plugin->http_server_daemon_v6);
1763 if (plugin->http_server_task_v4 != GNUNET_SCHEDULER_NO_TASK)
1764 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting MHD with IPv4 on port %u\n",port);
1765 else if (plugin->http_server_task_v6 != GNUNET_SCHEDULER_NO_TASK)
1766 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting MHD with IPv4 and IPv6 on port %u\n",port);
1769 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"No MHD was started, transport plugin not functional!\n");
1770 libgnunet_plugin_transport_http_done (api);
1774 /* Initializing cURL */
1775 curl_global_init(CURL_GLOBAL_ALL);
1776 plugin->multi_handle = curl_multi_init();
1778 if ( NULL == plugin->multi_handle )
1780 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
1782 _("Could not initialize curl multi handle, failed to start http plugin!\n"),
1784 libgnunet_plugin_transport_http_done (api);
1788 plugin->sessions = GNUNET_CONTAINER_multihashmap_create (10);
1789 GNUNET_OS_network_interfaces_list (&process_interfaces, plugin);
1794 /* end of plugin_transport_http.c */