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.
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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
343 * @param addr_in address the peer is using inbound
344 * @param addr_out address the peer is using outbound
345 * @param peer identity
346 * @return created session object
348 static struct Session *
349 create_session (void * cls,
354 const struct GNUNET_PeerIdentity *peer)
356 struct Plugin *plugin = cls;
357 struct Session * cs = GNUNET_malloc ( sizeof( struct Session) );
359 GNUNET_assert(cls !=NULL);
362 cs->addr_in = GNUNET_malloc (addrlen_in);
363 cs->addr_in_len = addrlen_in;
364 memcpy(cs->addr_in,addr_in,addrlen_in);
367 if (addrlen_out != 0)
369 cs->addr_out = GNUNET_malloc (addrlen_out);
370 cs->addr_out_len = addrlen_out;
371 memcpy(cs->addr_out,addr_out,addrlen_out);
374 memcpy(&cs->identity, peer, sizeof (struct GNUNET_PeerIdentity));
375 GNUNET_CRYPTO_hash_to_enc(&cs->identity.hashPubKey,&(cs->hash));
376 cs->outbound_connections_head = NULL;
377 cs->outbound_connections_tail = NULL;
382 * Check if session for this peer is already existing, otherwise create it
383 * @param cls the plugin used
384 * @param p peer to get session for
385 * @return session found or created
387 static struct Session * session_get (void * cls, const struct GNUNET_PeerIdentity *p)
389 struct Plugin *plugin = cls;
393 cs = GNUNET_CONTAINER_multihashmap_get (plugin->sessions, &p->hashPubKey);
396 cs = create_session(plugin, NULL, 0, NULL, 0, p);
397 res = GNUNET_CONTAINER_multihashmap_put ( plugin->sessions,
398 &cs->identity.hashPubKey,
400 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
401 if (res == GNUNET_OK)
402 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
403 "New Session `%s' inserted\n", GNUNET_i2s(p));
408 static char * create_url(void * cls, const void * addr, size_t addrlen)
410 struct Plugin *plugin = cls;
414 GNUNET_assert ((addr!=NULL) && (addrlen != 0));
415 if (addrlen == (sizeof (struct IPv4HttpAddress)))
417 address = GNUNET_malloc(INET_ADDRSTRLEN + 1);
418 inet_ntop(AF_INET, &((struct IPv4HttpAddress *) addr)->ipv4_addr,address,INET_ADDRSTRLEN);
419 GNUNET_asprintf (&url,
422 ntohs(((struct IPv4HttpAddress *) addr)->u_port),
423 (char *) (&plugin->my_ascii_hash_ident));
424 GNUNET_free(address);
426 else if (addrlen == (sizeof (struct IPv6HttpAddress)))
428 address = GNUNET_malloc(INET6_ADDRSTRLEN + 1);
429 inet_ntop(AF_INET6, &((struct IPv6HttpAddress *) addr)->ipv6_addr,address,INET6_ADDRSTRLEN);
430 GNUNET_asprintf(&url,
433 ntohs(((struct IPv6HttpAddress *) addr)->u6_port),
434 (char *) (&plugin->my_ascii_hash_ident));
435 GNUNET_free(address);
441 * Check if session already knows this address for a outbound connection to this peer
442 * If address not in session, add it to the session
443 * @param cls the plugin used
444 * @param p the session
445 * @param addr address
446 * @param addr_len address length
447 * @return the found or created address
449 static struct HTTP_Connection_out * session_check_outbound_address (void * cls, struct Session *cs, const void * addr, size_t addr_len)
451 struct Plugin *plugin = cls;
452 struct HTTP_Connection_out * cc = cs->outbound_connections_head;
453 struct HTTP_Connection_out * con = NULL;
455 GNUNET_assert((addr_len == sizeof (struct IPv4HttpAddress)) || (addr_len == sizeof (struct IPv6HttpAddress)));
459 if (addr_len == cc->addrlen)
461 if (0 == memcmp(cc->addr, addr, addr_len))
472 con = GNUNET_malloc(sizeof(struct HTTP_Connection_out) + addr_len);
473 con->addrlen = addr_len;
475 con->url=create_url(plugin, addr, addr_len);
476 con->connected = GNUNET_NO;
478 memcpy(con->addr, addr, addr_len);
479 GNUNET_CONTAINER_DLL_insert(cs->outbound_connections_head,cs->outbound_connections_tail,con);
480 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Created new connection %X to peer `%s'\n",con,GNUNET_i2s(&cs->identity));
487 * Check if session already knows this address for a inbound connection to this peer
488 * If address not in session, add it to the session
489 * @param cls the plugin used
490 * @param p the session
491 * @param addr address
492 * @param addr_len address length
493 * @return the found or created address
495 static struct HTTP_Connection_in * session_check_inbound_address (void * cls, struct Session *cs, const void * addr, size_t addr_len)
497 //struct Plugin *plugin = cls;
498 struct HTTP_Connection_in * cc = cs->inbound_connections_head;
499 struct HTTP_Connection_in * con = NULL;
501 GNUNET_assert((addr_len == sizeof (struct IPv4HttpAddress)) || (addr_len == sizeof (struct IPv6HttpAddress)));
505 if (addr_len == cc->addrlen)
507 if (0 == memcmp(cc->addr, addr, addr_len))
515 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"No connection info for this address was found\n",GNUNET_i2s(&cs->identity));
518 con = GNUNET_malloc(sizeof(struct HTTP_Connection_in) + addr_len);
519 con->addrlen = addr_len;
521 con->connected = GNUNET_NO;
523 memcpy(con->addr, addr, addr_len);
524 GNUNET_CONTAINER_DLL_insert(cs->inbound_connections_head,cs->inbound_connections_tail,con);
531 * Callback called by MHD when a connection is terminated
533 static void requestCompletedCallback (void *cls, struct MHD_Connection * connection, void **httpSessionCache)
535 struct HTTP_Connection_in * con;
537 con = *httpSessionCache;
540 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection from peer `%s' was terminated\n",GNUNET_i2s(&con->session->identity));
541 /* session set to inactive */
542 con->is_put_in_progress = GNUNET_NO;
543 con->is_bad_request = GNUNET_NO;
547 static void messageTokenizerCallback (void *cls,
549 const struct GNUNET_MessageHeader *message)
551 struct HTTP_Connection_in * con = cls;
552 GNUNET_assert(con != NULL);
554 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
555 "Received message with type %u and size %u from `%s'\n",
556 ntohs(message->type),
557 ntohs(message->size),
558 GNUNET_i2s(&(con->session->identity)));
559 con->session->plugin->env->receive (con->session->plugin->env->cls,
560 &con->session->identity,
561 message, 1, con->session,
567 * Check if ip is allowed to connect.
570 acceptPolicyCallback (void *cls,
571 const struct sockaddr *addr, socklen_t addr_len)
574 struct Plugin *plugin = cls;
576 /* Every connection is accepted, nothing more to do here */
580 int server_read_callback (void *cls, uint64_t pos, char *buf, int max)
583 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "server_read_callback\n");
588 * Process GET or PUT request received via MHD. For
589 * GET, queue response that will send back our pending
590 * messages. For PUT, process incoming data and send
591 * to GNUnet core. In either case, check if a session
592 * already exists and create a new one if not.
595 accessHandlerCallback (void *cls,
596 struct MHD_Connection *mhd_connection,
600 const char *upload_data,
601 size_t * upload_data_size, void **httpSessionCache)
603 struct Plugin *plugin = cls;
604 struct MHD_Response *response;
606 struct HTTP_Connection_in * con;
607 const union MHD_ConnectionInfo * conn_info;
608 struct sockaddr_in *addrin;
609 struct sockaddr_in6 *addrin6;
610 char address[INET6_ADDRSTRLEN+14];
611 struct GNUNET_PeerIdentity pi_in;
613 int send_error_to_client;
614 struct IPv4HttpAddress ipv4addr;
615 struct IPv6HttpAddress ipv6addr;
617 GNUNET_assert(cls !=NULL);
618 send_error_to_client = GNUNET_NO;
619 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"accessHandlerCallback\n");
620 if (NULL == *httpSessionCache)
622 /* check url for peer identity , if invalid send HTTP 404*/
623 res = GNUNET_CRYPTO_hash_from_string ( &url[1], &(pi_in.hashPubKey));
624 if ( GNUNET_SYSERR == res )
626 response = MHD_create_response_from_data (strlen (HTTP_ERROR_RESPONSE),HTTP_ERROR_RESPONSE, MHD_NO, MHD_NO);
627 res = MHD_queue_response (mhd_connection, MHD_HTTP_NOT_FOUND, response);
628 MHD_destroy_response (response);
630 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Peer has no valid ident, sent HTTP 1.1/404\n");
632 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Peer has no valid ident, could not send error\n");
638 con = *httpSessionCache;
642 /* Is it a PUT or a GET request */
643 if (0 == strcmp (MHD_HTTP_METHOD_PUT, method))
645 if (NULL == *httpSessionCache)
647 /* get session for peer identity */
648 cs = session_get (plugin ,&pi_in);
650 conn_info = MHD_get_connection_info(mhd_connection, MHD_CONNECTION_INFO_CLIENT_ADDRESS );
651 /* Incoming IPv4 connection */
652 if ( AF_INET == conn_info->client_addr->sin_family)
654 addrin = conn_info->client_addr;
655 inet_ntop(addrin->sin_family, &(addrin->sin_addr),address,INET_ADDRSTRLEN);
656 memcpy(&ipv4addr.ipv4_addr,&(addrin->sin_addr),sizeof(struct in_addr));
657 ipv4addr.u_port = addrin->sin_port;
658 con = session_check_inbound_address (plugin, cs, (const void *) &ipv4addr, sizeof (struct IPv4HttpAddress));
660 /* Incoming IPv6 connection */
661 if ( AF_INET6 == conn_info->client_addr->sin_family)
663 addrin6 = (struct sockaddr_in6 *) conn_info->client_addr;
664 inet_ntop(addrin6->sin6_family, &(addrin6->sin6_addr),address,INET6_ADDRSTRLEN);
665 memcpy(&ipv6addr.ipv6_addr,&(addrin6->sin6_addr),sizeof(struct in_addr));
666 ipv6addr.u6_port = addrin6->sin6_port;
667 con = session_check_inbound_address (plugin, cs, &ipv6addr, sizeof (struct IPv6HttpAddress));
669 /* Set closure and update current session*/
671 *httpSessionCache = con;
672 if (con->msgtok==NULL)
673 con->msgtok = GNUNET_SERVER_mst_create (GNUNET_SERVER_MAX_MESSAGE_SIZE - 1, &messageTokenizerCallback, con);
675 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);
678 if ((*upload_data_size == 0) && (con->is_put_in_progress==GNUNET_NO))
680 con->is_put_in_progress = GNUNET_YES;
684 /* Transmission of all data complete */
685 if ((*upload_data_size == 0) && (con->is_put_in_progress == GNUNET_YES))
687 response = MHD_create_response_from_data (strlen (HTTP_PUT_RESPONSE),HTTP_PUT_RESPONSE, MHD_NO, MHD_NO);
688 res = MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
689 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Sent HTTP/1.1: 200 OK as PUT Response\n",HTTP_PUT_RESPONSE, strlen (HTTP_PUT_RESPONSE), res );
690 MHD_destroy_response (response);
693 con->is_put_in_progress = GNUNET_NO;
694 con->is_bad_request = GNUNET_NO;
699 if ((*upload_data_size > 0) && (con->is_put_in_progress == GNUNET_YES))
701 res = GNUNET_SERVER_mst_receive(con->msgtok, con, upload_data,*upload_data_size, GNUNET_NO, GNUNET_NO);
702 (*upload_data_size) = 0;
708 if ( 0 == strcmp (MHD_HTTP_METHOD_GET, method) )
710 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Got GET Request\n");
711 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"URL: `%s'\n",url);
713 /* check url for peer identity , if invalid send HTTP 404*/
714 res = GNUNET_CRYPTO_hash_from_string ( &url[1], &(pi_in.hashPubKey));
716 if ( GNUNET_SYSERR == res )
718 response = MHD_create_response_from_data (strlen (HTTP_ERROR_RESPONSE),HTTP_ERROR_RESPONSE, MHD_NO, MHD_NO);
719 res = MHD_queue_response (mhd_connection, MHD_HTTP_NOT_FOUND, response);
720 MHD_destroy_response (response);
722 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Peer has no valid ident, sent HTTP 1.1/404\n");
724 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Peer has no valid ident, could not send error\n");
728 response = MHD_create_response_from_callback(-1,32 * 1024, &server_read_callback, cs, NULL);
729 res = MHD_queue_response (mhd_connection, MHD_HTTP_NOT_FOUND, response);
730 MHD_destroy_response (response);
740 * Call MHD to process pending ipv4 requests and then go back
741 * and schedule the next run.
743 static void http_server_daemon_v4_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
745 * Call MHD to process pending ipv6 requests and then go back
746 * and schedule the next run.
748 static void http_server_daemon_v6_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
751 * Function that queries MHD's select sets and
752 * starts the task waiting for them.
754 static GNUNET_SCHEDULER_TaskIdentifier
755 http_server_daemon_prepare (void * cls, struct MHD_Daemon *daemon_handle)
757 struct Plugin *plugin = cls;
758 GNUNET_SCHEDULER_TaskIdentifier ret;
762 struct GNUNET_NETWORK_FDSet *wrs;
763 struct GNUNET_NETWORK_FDSet *wws;
764 struct GNUNET_NETWORK_FDSet *wes;
766 unsigned long long timeout;
768 struct GNUNET_TIME_Relative tv;
770 GNUNET_assert(cls !=NULL);
771 ret = GNUNET_SCHEDULER_NO_TASK;
775 wrs = GNUNET_NETWORK_fdset_create ();
776 wes = GNUNET_NETWORK_fdset_create ();
777 wws = GNUNET_NETWORK_fdset_create ();
779 GNUNET_assert (MHD_YES ==
780 MHD_get_fdset (daemon_handle,
785 haveto = MHD_get_timeout (daemon_handle, &timeout);
786 if (haveto == MHD_YES)
787 tv.value = (uint64_t) timeout;
789 tv = GNUNET_TIME_UNIT_FOREVER_REL;
790 GNUNET_NETWORK_fdset_copy_native (wrs, &rs, max);
791 GNUNET_NETWORK_fdset_copy_native (wws, &ws, max);
792 GNUNET_NETWORK_fdset_copy_native (wes, &es, max);
793 if (daemon_handle == plugin->http_server_daemon_v4)
795 ret = GNUNET_SCHEDULER_add_select (plugin->env->sched,
796 GNUNET_SCHEDULER_PRIORITY_DEFAULT,
797 GNUNET_SCHEDULER_NO_TASK,
801 &http_server_daemon_v4_run,
804 if (daemon_handle == plugin->http_server_daemon_v6)
806 ret = GNUNET_SCHEDULER_add_select (plugin->env->sched,
807 GNUNET_SCHEDULER_PRIORITY_DEFAULT,
808 GNUNET_SCHEDULER_NO_TASK,
812 &http_server_daemon_v6_run,
815 GNUNET_NETWORK_fdset_destroy (wrs);
816 GNUNET_NETWORK_fdset_destroy (wws);
817 GNUNET_NETWORK_fdset_destroy (wes);
822 * Call MHD to process pending requests and then go back
823 * and schedule the next run.
825 static void http_server_daemon_v4_run (void *cls,
826 const struct GNUNET_SCHEDULER_TaskContext *tc)
828 struct Plugin *plugin = cls;
830 GNUNET_assert(cls !=NULL);
831 if (plugin->http_server_task_v4 != GNUNET_SCHEDULER_NO_TASK)
832 plugin->http_server_task_v4 = GNUNET_SCHEDULER_NO_TASK;
834 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
837 GNUNET_assert (MHD_YES == MHD_run (plugin->http_server_daemon_v4));
838 plugin->http_server_task_v4 = http_server_daemon_prepare (plugin, plugin->http_server_daemon_v4);
844 * Call MHD to process pending requests and then go back
845 * and schedule the next run.
847 static void http_server_daemon_v6_run (void *cls,
848 const struct GNUNET_SCHEDULER_TaskContext *tc)
850 struct Plugin *plugin = cls;
852 GNUNET_assert(cls !=NULL);
853 if (plugin->http_server_task_v6 != GNUNET_SCHEDULER_NO_TASK)
854 plugin->http_server_task_v6 = GNUNET_SCHEDULER_NO_TASK;
856 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
859 GNUNET_assert (MHD_YES == MHD_run (plugin->http_server_daemon_v6));
860 plugin->http_server_task_v6 = http_server_daemon_prepare (plugin, plugin->http_server_daemon_v6);
865 * Removes a message from the linked list of messages
866 * @param ses session to remove message from
867 * @param msg message to remove
868 * @return GNUNET_SYSERR if msg not found, GNUNET_OK on success
871 static int remove_http_message(struct HTTP_Connection_out * con, struct HTTP_Message * msg)
873 GNUNET_CONTAINER_DLL_remove(con->pending_msgs_head,con->pending_msgs_tail,msg);
879 static size_t header_function( void *ptr, size_t size, size_t nmemb, void *stream)
882 size_t len = size * nmemb;
885 if ((size * nmemb) < SIZE_MAX)
886 tmp = GNUNET_malloc (len+1);
888 if ((tmp != NULL) && (len > 0))
893 if (tmp[len-2] == 13)
897 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Header: `%s'\n",tmp);
907 * Callback method used with libcurl
908 * Method is called when libcurl needs to read data during sending
909 * @param stream pointer where to write data
910 * @param size size of an individual element
911 * @param nmemb count of elements that can be written to the buffer
912 * @param ptr source pointer, passed to the libcurl handle
913 * @return bytes written to stream
915 static size_t send_read_callback(void *stream, size_t size, size_t nmemb, void *ptr)
917 struct HTTP_Connection_out * con = ptr;
918 struct HTTP_Message * msg = con->pending_msgs_tail;
922 if (con->pending_msgs_tail == NULL)
924 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection: %X: No Message to send, pausing connection\n",con);
925 con->send_paused = GNUNET_YES;
926 return CURL_READFUNC_PAUSE;
929 msg = con->pending_msgs_tail;
931 if (msg->pos < msg->size)
933 /* data fit in buffer */
934 if ((msg->size - msg->pos) <= (size * nmemb))
936 len = (msg->size - msg->pos);
937 memcpy(stream, &msg->buf[msg->pos], len);
944 memcpy(stream, &msg->buf[msg->pos], len);
949 /* no data to send */
955 if ( msg->pos == msg->size)
957 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection: %X: Message with %u bytes sent, removing message from queue \n",con, msg->pos);
958 /* Calling transmit continuation */
959 if (( NULL != con->pending_msgs_tail) && (NULL != con->pending_msgs_tail->transmit_cont))
960 msg->transmit_cont (con->pending_msgs_tail->transmit_cont_cls,&(con->session)->identity,GNUNET_OK);
961 remove_http_message(con, msg);
967 * Callback method used with libcurl
968 * Method is called when libcurl needs to write data during sending
969 * @param stream pointer where to write data
970 * @param size size of an individual element
971 * @param nmemb count of elements that can be written to the buffer
972 * @param ptr destination pointer, passed to the libcurl handle
973 * @return bytes read from stream
975 static size_t send_write_callback( void *stream, size_t size, size_t nmemb, void *ptr)
979 if ((size * nmemb) < SIZE_MAX)
980 data = GNUNET_malloc(size*nmemb +1);
983 memcpy( data, stream, size*nmemb);
984 data[size*nmemb] = '\0';
987 return (size * nmemb);
992 * Function setting up file descriptors and scheduling task to run
993 * @param ses session to send data to
994 * @return bytes sent to peer
996 static size_t send_schedule(void *cls, struct Session* ses );
999 * Function setting up curl handle and selecting message to send
1000 * @param ses session to send data to
1001 * @return bytes sent to peer
1003 static ssize_t send_initiate (void *cls, struct Session* ses , struct HTTP_Connection_out *con)
1005 struct Plugin *plugin = cls;
1008 struct HTTP_Message * msg;
1009 struct GNUNET_TIME_Relative timeout = GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT;
1011 /* already connected, no need to initiate connection */
1012 if ((con->connected == GNUNET_YES) && (con->curl_handle != NULL) && (con->send_paused == GNUNET_NO))
1014 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection: %X: active, enqueueing message\n",con);
1018 if ((con->connected == GNUNET_YES) && (con->curl_handle != NULL) && (con->send_paused == GNUNET_YES))
1020 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection: %X: paused, unpausing existing connection and enqueueing message\n",con);
1021 curl_easy_pause(con->curl_handle,CURLPAUSE_CONT);
1022 con->send_paused=GNUNET_NO;
1026 /* not connected, initiate connection */
1027 GNUNET_assert(cls !=NULL);
1029 if ( NULL == con->curl_handle)
1030 con->curl_handle = curl_easy_init();
1031 GNUNET_assert (con->curl_handle != NULL);
1032 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection: %X: not existing, creating new connection\n",con);
1034 GNUNET_assert (NULL != con->pending_msgs_tail);
1035 msg = con->pending_msgs_tail;
1038 curl_easy_setopt(con->curl_handle, CURLOPT_VERBOSE, 1L);
1040 curl_easy_setopt(con->curl_handle, CURLOPT_URL, con->url);
1041 curl_easy_setopt(con->curl_handle, CURLOPT_PUT, 1L);
1042 curl_easy_setopt(con->curl_handle, CURLOPT_HEADERFUNCTION, &header_function);
1043 curl_easy_setopt(con->curl_handle, CURLOPT_WRITEHEADER, con);
1044 curl_easy_setopt(con->curl_handle, CURLOPT_READFUNCTION, send_read_callback);
1045 curl_easy_setopt(con->curl_handle, CURLOPT_READDATA, con);
1046 curl_easy_setopt(con->curl_handle, CURLOPT_WRITEFUNCTION, send_write_callback);
1047 curl_easy_setopt(con->curl_handle, CURLOPT_READDATA, con);
1048 curl_easy_setopt(con->curl_handle, CURLOPT_TIMEOUT, (long) timeout.value);
1049 curl_easy_setopt(con->curl_handle, CURLOPT_PRIVATE, con);
1050 curl_easy_setopt(con->curl_handle, CURLOPT_CONNECTTIMEOUT, HTTP_CONNECT_TIMEOUT_DBG);
1051 curl_easy_setopt(con->curl_handle, CURLOPT_BUFFERSIZE, GNUNET_SERVER_MAX_MESSAGE_SIZE);
1053 mret = curl_multi_add_handle(plugin->multi_handle, con->curl_handle);
1054 if (mret != CURLM_OK)
1056 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1057 _("%s failed at %s:%d: `%s'\n"),
1058 "curl_multi_add_handle", __FILE__, __LINE__,
1059 curl_multi_strerror (mret));
1063 con->connected = GNUNET_YES;
1065 bytes_sent = send_schedule (plugin, ses);
1069 static void send_execute (void *cls,
1070 const struct GNUNET_SCHEDULER_TaskContext *tc)
1072 struct Plugin *plugin = cls;
1073 static unsigned int handles_last_run;
1075 struct CURLMsg *msg;
1077 struct HTTP_Connection_out * con = NULL;
1078 struct Session * cs = NULL;
1081 GNUNET_assert(cls !=NULL);
1082 plugin->http_server_task_send = GNUNET_SCHEDULER_NO_TASK;
1083 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
1089 mret = curl_multi_perform (plugin->multi_handle, &running);
1090 if (running < handles_last_run)
1095 msg = curl_multi_info_read (plugin->multi_handle, &running);
1096 GNUNET_break (msg != NULL);
1099 /* get session for affected curl handle */
1100 GNUNET_assert ( msg->easy_handle != NULL );
1101 curl_easy_getinfo(msg->easy_handle, CURLINFO_PRIVATE, (char *) &con);
1102 GNUNET_assert ( con != NULL );
1104 GNUNET_assert ( cs != NULL );
1109 if ( (msg->data.result != CURLE_OK) &&
1110 (msg->data.result != CURLE_GOT_NOTHING) )
1112 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
1113 _("%s failed for `%s' connection %X at %s:%d: `%s'\n"),
1114 "curl_multi_perform",
1115 GNUNET_i2s(&cs->identity),con,
1118 curl_easy_strerror (msg->data.result));
1119 /* sending msg failed*/
1120 con->connected = GNUNET_NO;
1121 curl_easy_cleanup(con->curl_handle);
1122 con->curl_handle=NULL;
1123 if (( NULL != con->pending_msgs_tail) && ( NULL != con->pending_msgs_tail->transmit_cont))
1124 con->pending_msgs_tail->transmit_cont (con->pending_msgs_tail->transmit_cont_cls,&con->session->identity,GNUNET_SYSERR);
1129 GNUNET_assert (CURLE_OK == curl_easy_getinfo(msg->easy_handle, CURLINFO_RESPONSE_CODE, &http_result));
1130 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1131 "Send to peer `%s' completed with code %u\n", GNUNET_i2s(&cs->identity), http_result );
1133 curl_easy_cleanup(con->curl_handle);
1134 con->connected = GNUNET_NO;
1135 con->curl_handle=NULL;
1137 /* Calling transmit continuation */
1138 if (( NULL != con->pending_msgs_tail) && (NULL != con->pending_msgs_tail->transmit_cont))
1140 /* HTTP 1xx : Last message before here was informational */
1141 if ((http_result >=100) && (http_result < 200))
1142 con->pending_msgs_tail->transmit_cont (con->pending_msgs_tail->transmit_cont_cls,&cs->identity,GNUNET_OK);
1143 /* HTTP 2xx: successful operations */
1144 if ((http_result >=200) && (http_result < 300))
1145 con->pending_msgs_tail->transmit_cont (con->pending_msgs_tail->transmit_cont_cls,&cs->identity,GNUNET_OK);
1146 /* HTTP 3xx..5xx: error */
1147 if ((http_result >=300) && (http_result < 600))
1148 con->pending_msgs_tail->transmit_cont (con->pending_msgs_tail->transmit_cont_cls,&cs->identity,GNUNET_SYSERR);
1151 if (con->pending_msgs_tail != NULL)
1153 if (con->pending_msgs_tail->pos>0)
1154 remove_http_message(con, con->pending_msgs_tail);
1155 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Message could not be removed from session `%s'\n", GNUNET_i2s(&cs->identity));
1163 while ( (running > 0) );
1165 handles_last_run = running;
1167 while (mret == CURLM_CALL_MULTI_PERFORM);
1168 send_schedule(plugin, cls);
1173 * Function setting up file descriptors and scheduling task to run
1174 * @param ses session to send data to
1175 * @return bytes sent to peer
1177 static size_t send_schedule(void *cls, struct Session* ses )
1179 struct Plugin *plugin = cls;
1184 struct GNUNET_NETWORK_FDSet *grs;
1185 struct GNUNET_NETWORK_FDSet *gws;
1189 GNUNET_assert(cls !=NULL);
1194 mret = curl_multi_fdset (plugin->multi_handle, &rs, &ws, &es, &max);
1195 if (mret != CURLM_OK)
1197 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1198 _("%s failed at %s:%d: `%s'\n"),
1199 "curl_multi_fdset", __FILE__, __LINE__,
1200 curl_multi_strerror (mret));
1203 mret = curl_multi_timeout (plugin->multi_handle, &to);
1204 if (mret != CURLM_OK)
1206 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1207 _("%s failed at %s:%d: `%s'\n"),
1208 "curl_multi_timeout", __FILE__, __LINE__,
1209 curl_multi_strerror (mret));
1213 grs = GNUNET_NETWORK_fdset_create ();
1214 gws = GNUNET_NETWORK_fdset_create ();
1215 GNUNET_NETWORK_fdset_copy_native (grs, &rs, max + 1);
1216 GNUNET_NETWORK_fdset_copy_native (gws, &ws, max + 1);
1217 plugin->http_server_task_send = GNUNET_SCHEDULER_add_select (plugin->env->sched,
1218 GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1219 GNUNET_SCHEDULER_NO_TASK,
1220 GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 0),
1225 GNUNET_NETWORK_fdset_destroy (gws);
1226 GNUNET_NETWORK_fdset_destroy (grs);
1228 /* FIXME: return bytes REALLY sent */
1234 * Function that can be used by the transport service to transmit
1235 * a message using the plugin.
1237 * @param cls closure
1238 * @param target who should receive this message
1239 * @param priority how important is the message
1240 * @param msgbuf the message to transmit
1241 * @param msgbuf_size number of bytes in 'msgbuf'
1242 * @param to when should we time out
1243 * @param session which session must be used (or NULL for "any")
1244 * @param addr the address to use (can be NULL if the plugin
1245 * is "on its own" (i.e. re-use existing TCP connection))
1246 * @param addrlen length of the address in bytes
1247 * @param force_address GNUNET_YES if the plugin MUST use the given address,
1248 * otherwise the plugin may use other addresses or
1249 * existing connections (if available)
1250 * @param cont continuation to call once the message has
1251 * been transmitted (or if the transport is ready
1252 * for the next transmission call; or if the
1253 * peer disconnected...)
1254 * @param cont_cls closure for cont
1255 * @return number of bytes used (on the physical network, with overheads);
1256 * -1 on hard errors (i.e. address invalid); 0 is a legal value
1257 * and does NOT mean that the message was not transmitted (DV)
1260 http_plugin_send (void *cls,
1261 const struct GNUNET_PeerIdentity *target,
1264 unsigned int priority,
1265 struct GNUNET_TIME_Relative to,
1266 struct Session *session,
1270 GNUNET_TRANSPORT_TransmitContinuation cont,
1273 struct Plugin *plugin = cls;
1277 struct HTTP_Message *msg;
1278 struct HTTP_Connection_out *con;
1281 GNUNET_assert(cls !=NULL);
1285 /* get session from hashmap */
1286 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Transport tells me to send %u bytes to %s, %u\n", msgbuf_size, GNUNET_i2s(target),addrlen);
1287 cs = session_get(plugin, target);
1288 con = session_check_outbound_address(plugin, cs, addr, addrlen);
1289 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Transport tells me to send %u bytes to peer `%s'\n",msgbuf_size,GNUNET_i2s(&cs->identity));
1292 msg = GNUNET_malloc (sizeof (struct HTTP_Message) + msgbuf_size);
1294 msg->size = msgbuf_size;
1296 msg->buf = (char *) &msg[1];
1297 msg->transmit_cont = cont;
1298 msg->transmit_cont_cls = cont_cls;
1299 memcpy (msg->buf,msgbuf, msgbuf_size);
1301 /* must use this address */
1302 if (force_address == GNUNET_YES)
1304 /* enqueue in connection message queue */
1305 GNUNET_CONTAINER_DLL_insert(con->pending_msgs_head,con->pending_msgs_tail,msg);
1307 /* can use existing connection to send */
1310 /* enqueue in connection message queue */
1311 GNUNET_CONTAINER_DLL_insert(con->pending_msgs_head,con->pending_msgs_tail,msg);
1313 return send_initiate (plugin, cs, con);
1319 * Function that can be used to force the plugin to disconnect
1320 * from the given peer and cancel all previous transmissions
1321 * (and their continuationc).
1323 * @param cls closure
1324 * @param target peer from which to disconnect
1327 http_plugin_disconnect (void *cls,
1328 const struct GNUNET_PeerIdentity *target)
1330 struct Plugin *plugin = cls;
1331 struct HTTP_Connection_out *con;
1334 /* get session from hashmap */
1335 cs = session_get(plugin, target);
1336 con = cs->outbound_connections_head;
1340 if (con->curl_handle!=NULL)
1341 curl_easy_cleanup(con->curl_handle);
1342 con->curl_handle=NULL;
1343 con->connected = GNUNET_NO;
1344 while (con->pending_msgs_head!=NULL)
1346 remove_http_message(con, con->pending_msgs_head);
1354 * Convert the transports address to a nice, human-readable
1357 * @param cls closure
1358 * @param type name of the transport that generated the address
1359 * @param addr one of the addresses of the host, NULL for the last address
1360 * the specific address format depends on the transport
1361 * @param addrlen length of the address
1362 * @param numeric should (IP) addresses be displayed in numeric form?
1363 * @param timeout after how long should we give up?
1364 * @param asc function to call on each string
1365 * @param asc_cls closure for asc
1368 http_plugin_address_pretty_printer (void *cls,
1373 struct GNUNET_TIME_Relative timeout,
1374 GNUNET_TRANSPORT_AddressStringCallback
1377 const struct IPv4HttpAddress *t4;
1378 const struct IPv6HttpAddress *t6;
1379 struct sockaddr_in a4;
1380 struct sockaddr_in6 a6;
1386 GNUNET_assert(cls !=NULL);
1387 if (addrlen == sizeof (struct IPv6HttpAddress))
1389 address = GNUNET_malloc (INET6_ADDRSTRLEN);
1391 a6.sin6_addr = t6->ipv6_addr;
1392 inet_ntop(AF_INET6, &(a6.sin6_addr),address,INET6_ADDRSTRLEN);
1393 port = ntohs(t6->u6_port);
1395 else if (addrlen == sizeof (struct IPv4HttpAddress))
1397 address = GNUNET_malloc (INET_ADDRSTRLEN);
1399 a4.sin_addr.s_addr = t4->ipv4_addr;
1400 inet_ntop(AF_INET, &(a4.sin_addr),address,INET_ADDRSTRLEN);
1401 port = ntohs(t4->u_port);
1405 /* invalid address */
1406 GNUNET_break_op (0);
1407 asc (asc_cls, NULL);
1410 res = GNUNET_asprintf(&ret,"http://%s:%u/",address,port);
1411 GNUNET_free (address);
1412 GNUNET_assert(res != 0);
1420 * Another peer has suggested an address for this
1421 * peer and transport plugin. Check that this could be a valid
1422 * address. If so, consider adding it to the list
1425 * @param cls closure
1426 * @param addr pointer to the address
1427 * @param addrlen length of addr
1428 * @return GNUNET_OK if this is a plausible address for this peer
1432 http_plugin_address_suggested (void *cls,
1433 const void *addr, size_t addrlen)
1435 struct Plugin *plugin = cls;
1436 struct IPv4HttpAddress *v4;
1437 struct IPv6HttpAddress *v6;
1440 GNUNET_assert(cls !=NULL);
1441 if ((addrlen != sizeof (struct IPv4HttpAddress)) &&
1442 (addrlen != sizeof (struct IPv6HttpAddress)))
1444 return GNUNET_SYSERR;
1446 if (addrlen == sizeof (struct IPv4HttpAddress))
1448 v4 = (struct IPv4HttpAddress *) addr;
1449 if (INADDR_LOOPBACK == ntohl(v4->ipv4_addr))
1451 return GNUNET_SYSERR;
1453 port = ntohs (v4->u_port);
1454 if (port != plugin->port_inbound)
1456 return GNUNET_SYSERR;
1461 v6 = (struct IPv6HttpAddress *) addr;
1462 if (IN6_IS_ADDR_LINKLOCAL (&v6->ipv6_addr))
1464 return GNUNET_SYSERR;
1466 port = ntohs (v6->u6_port);
1467 if (port != plugin->port_inbound)
1469 return GNUNET_SYSERR;
1477 * Function called for a quick conversion of the binary address to
1478 * a numeric address. Note that the caller must not free the
1479 * address and that the next call to this function is allowed
1480 * to override the address again.
1482 * @param cls closure
1483 * @param addr binary address
1484 * @param addrlen length of the address
1485 * @return string representing the same address
1488 http_plugin_address_to_string (void *cls,
1492 const struct IPv4HttpAddress *t4;
1493 const struct IPv6HttpAddress *t6;
1494 struct sockaddr_in a4;
1495 struct sockaddr_in6 a6;
1501 GNUNET_assert(cls !=NULL);
1502 if (addrlen == sizeof (struct IPv6HttpAddress))
1504 address = GNUNET_malloc (INET6_ADDRSTRLEN);
1506 a6.sin6_addr = t6->ipv6_addr;
1507 inet_ntop(AF_INET6, &(a6.sin6_addr),address,INET6_ADDRSTRLEN);
1508 port = ntohs(t6->u6_port);
1510 else if (addrlen == sizeof (struct IPv4HttpAddress))
1512 address = GNUNET_malloc (INET_ADDRSTRLEN);
1514 a4.sin_addr.s_addr = t4->ipv4_addr;
1515 inet_ntop(AF_INET, &(a4.sin_addr),address,INET_ADDRSTRLEN);
1516 port = ntohs(t4->u_port);
1520 /* invalid address */
1523 res = GNUNET_asprintf(&ret,"%s:%u",address,port);
1524 GNUNET_free (address);
1525 GNUNET_assert(res != 0);
1530 * Add the IP of our network interface to the list of
1531 * our external IP addresses.
1533 * @param cls the 'struct Plugin*'
1534 * @param name name of the interface
1535 * @param isDefault do we think this may be our default interface
1536 * @param addr address of the interface
1537 * @param addrlen number of bytes in addr
1538 * @return GNUNET_OK to continue iterating
1541 process_interfaces (void *cls,
1544 const struct sockaddr *addr, socklen_t addrlen)
1546 struct Plugin *plugin = cls;
1547 struct IPv4HttpAddress * t4;
1548 struct IPv6HttpAddress * t6;
1551 GNUNET_assert(cls !=NULL);
1552 af = addr->sa_family;
1555 t4 = GNUNET_malloc(sizeof(struct IPv4HttpAddress));
1556 if (INADDR_LOOPBACK == ntohl(((struct sockaddr_in *) addr)->sin_addr.s_addr))
1558 /* skip loopback addresses */
1561 t4->ipv4_addr = ((struct sockaddr_in *) addr)->sin_addr.s_addr;
1562 t4->u_port = htons (plugin->port_inbound);
1563 plugin->env->notify_address(plugin->env->cls,"http",t4, sizeof (struct IPv4HttpAddress), GNUNET_TIME_UNIT_FOREVER_REL);
1566 else if (af == AF_INET6)
1568 t6 = GNUNET_malloc(sizeof(struct IPv6HttpAddress));
1569 if (IN6_IS_ADDR_LINKLOCAL (&((struct sockaddr_in6 *) addr)->sin6_addr))
1571 /* skip link local addresses */
1574 if (IN6_IS_ADDR_LOOPBACK (&((struct sockaddr_in6 *) addr)->sin6_addr))
1576 /* skip loopback addresses */
1579 memcpy (&t6->ipv6_addr,
1580 &((struct sockaddr_in6 *) addr)->sin6_addr,
1581 sizeof (struct in6_addr));
1582 t6->u6_port = htons (plugin->port_inbound);
1583 plugin->env->notify_address(plugin->env->cls,"http",t6,sizeof (struct IPv6HttpAddress) , GNUNET_TIME_UNIT_FOREVER_REL);
1587 int hashMapFreeIterator (void *cls, const GNUNET_HashCode *key, void *value)
1589 struct Session * cs = value;
1590 struct HTTP_Connection_out * con = cs->outbound_connections_head;
1591 struct HTTP_Connection_out * tmp_con = cs->outbound_connections_head;
1592 struct HTTP_Message * msg = NULL;
1593 struct HTTP_Message * tmp_msg = NULL;
1595 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Freeing session for peer `%s'\n",GNUNET_i2s(&cs->identity));
1597 /* freeing connections */
1600 GNUNET_free(con->url);
1601 if (con->curl_handle!=NULL)
1602 curl_easy_cleanup(con->curl_handle);
1603 con->curl_handle = NULL;
1604 msg = con->pending_msgs_head;
1615 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"All sessions freed \n");
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 */