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 3, 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_YES
45 #define DEBUG_HTTP GNUNET_NO
46 #define HTTP_CONNECT_TIMEOUT_DBG 10
49 * Text of the response sent back after the last bytes of a PUT
50 * request have been received (just to formally obey the HTTP
53 #define HTTP_PUT_RESPONSE "Thank you!"
56 * After how long do we expire an address that we
57 * learned from another peer if it is not reconfirmed
60 #define LEARNED_ADDRESS_EXPIRATION GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_HOURS, 6)
63 * Page returned if request invalid
65 #define HTTP_ERROR_RESPONSE "<!DOCTYPE HTML PUBLIC \"-//IETF//DTD HTML 2.0//EN\"><HTML><HEAD><TITLE>404 Not Found</TITLE></HEAD><BODY><H1>Not Found</H1>The requested URL was not found on this server.<P><HR><ADDRESS></ADDRESS></BODY></HTML>"
68 * Timeout for a http connect
70 #define HTTP_CONNECT_TIMEOUT 30
73 * Network format for IPv4 addresses.
75 struct IPv4HttpAddress
78 * IPv4 address, in network byte order.
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
154 struct HTTP_Connection * next;
156 struct HTTP_Connection * prev;
161 struct HTTP_Message * pending_msgs_head;
162 struct HTTP_Message * pending_msgs_tail;
165 unsigned int put_connected;
166 unsigned int put_send_paused;
168 unsigned int get_connected;
171 * curl handle for sending data using HTTP/PUT
174 CURL *put_curl_handle;
177 * curl handle for recieving data using HTTP/GET transmission
180 CURL *get_curl_handle;
182 struct Session * session;
185 struct HTTP_Connection_in
187 struct HTTP_Connection_in * next;
189 struct HTTP_Connection_in * prev;
194 unsigned int connected;
195 unsigned int send_paused;
197 struct GNUNET_SERVER_MessageStreamTokenizer * msgtok;
199 struct Session * session;
202 * Is there a HTTP/PUT in progress?
204 int is_put_in_progress;
207 * Is the http request invalid?
213 * Session handle for connections.
221 struct SessionHeader header;
224 * Stored in a linked list.
226 struct Session *next;
229 * Pointer to the global plugin struct.
231 struct Plugin *plugin;
234 * To whom are we talking to (set to our identity
235 * if we are still waiting for the welcome message)
237 struct GNUNET_PeerIdentity identity;
240 * Sender's ip address to distinguish between incoming connections
251 * Did we initiate the connection (GNUNET_YES) or the other peer (GNUNET_NO)?
256 * At what time did we reset last_received last?
258 struct GNUNET_TIME_Absolute last_quota_update;
261 * How many bytes have we received since the "last_quota_update"
264 uint64_t last_received;
267 * Number of bytes per ms that this peer is allowed
275 struct GNUNET_CRYPTO_HashAsciiEncoded hash;
278 * curl handle for outbound transmissions
283 * Message tokenizer for incoming data
285 //struct GNUNET_SERVER_MessageStreamTokenizer * msgtok;
287 struct HTTP_Connection *outbound_connections_head;
288 struct HTTP_Connection *outbound_connections_tail;
290 struct HTTP_Connection_in *inbound_connections_head;
291 struct HTTP_Connection_in *inbound_connections_tail;
295 * Encapsulation of all of the state of the plugin.
302 struct GNUNET_TRANSPORT_PluginEnvironment *env;
304 unsigned int port_inbound;
307 * Hashmap for all existing sessions.
309 struct GNUNET_CONTAINER_MultiHashMap *sessions;
312 * Daemon for listening for new IPv4 connections.
314 struct MHD_Daemon *http_server_daemon_v4;
317 * Daemon for listening for new IPv6connections.
319 struct MHD_Daemon *http_server_daemon_v6;
322 * Our primary task for http daemon handling IPv4 connections
324 GNUNET_SCHEDULER_TaskIdentifier http_server_task_v4;
327 * Our primary task for http daemon handling IPv6 connections
329 GNUNET_SCHEDULER_TaskIdentifier http_server_task_v6;
332 * The task sending data
334 GNUNET_SCHEDULER_TaskIdentifier http_server_task_send;
339 CURLM * multi_handle;
342 * Our ASCII encoded, hashed peer identity
343 * This string is used to distinguish between connections and is added to the urls
345 struct GNUNET_CRYPTO_HashAsciiEncoded my_ascii_hash_ident;
350 * Function called for a quick conversion of the binary address to
351 * a numeric address. Note that the caller must not free the
352 * address and that the next call to this function is allowed
353 * to override the address again.
356 * @param addr binary address
357 * @param addrlen length of the address
358 * @return string representing the same address
361 http_plugin_address_to_string (void *cls,
366 * Create a new session
367 * @param cls plugin as closure
368 * @param addr_in address the peer is using inbound
369 * @param addr_len_in address length
370 * @param addr_out address the peer is using outbound
371 * @param addr_len_out address length
372 * @param peer identity
373 * @return created session object
375 static struct Session *
376 create_session (void * cls,
381 const struct GNUNET_PeerIdentity *peer)
383 struct Plugin *plugin = cls;
384 struct Session * cs = GNUNET_malloc ( sizeof( struct Session) );
386 GNUNET_assert(cls !=NULL);
389 cs->addr_in = GNUNET_malloc (addrlen_in);
390 cs->addr_in_len = addrlen_in;
391 memcpy(cs->addr_in,addr_in,addrlen_in);
394 if (addrlen_out != 0)
396 cs->addr_out = GNUNET_malloc (addrlen_out);
397 cs->addr_out_len = addrlen_out;
398 memcpy(cs->addr_out,addr_out,addrlen_out);
401 memcpy(&cs->identity, peer, sizeof (struct GNUNET_PeerIdentity));
402 GNUNET_CRYPTO_hash_to_enc(&cs->identity.hashPubKey,&(cs->hash));
403 cs->outbound_connections_head = NULL;
404 cs->outbound_connections_tail = NULL;
409 * Check if session for this peer is already existing, otherwise create it
410 * @param cls the plugin used
411 * @param p peer to get session for
412 * @return session found or created
414 static struct Session * session_get (void * cls, const struct GNUNET_PeerIdentity *p)
416 struct Plugin *plugin = cls;
420 cs = GNUNET_CONTAINER_multihashmap_get (plugin->sessions, &p->hashPubKey);
423 cs = create_session(plugin, NULL, 0, NULL, 0, p);
424 res = GNUNET_CONTAINER_multihashmap_put ( plugin->sessions,
425 &cs->identity.hashPubKey,
427 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
428 if (res == GNUNET_OK)
429 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
430 "New Session `%s' inserted\n", GNUNET_i2s(p));
435 static char * create_url(void * cls, const void * addr, size_t addrlen)
437 struct Plugin *plugin = cls;
440 GNUNET_assert ((addr!=NULL) && (addrlen != 0));
441 GNUNET_asprintf(&url,
443 http_plugin_address_to_string(NULL, addr, addrlen),
444 (char *) (&plugin->my_ascii_hash_ident));
450 * Check if session already knows this address for a outbound connection to this peer
451 * If address not in session, add it to the session
452 * @param cls the plugin used
453 * @param cs the session
454 * @param addr address
455 * @param addr_len address length
456 * @return the found or created address
458 static struct HTTP_Connection * session_check_outbound_address (void * cls, struct Session *cs, const void * addr, size_t addr_len)
460 struct Plugin *plugin = cls;
461 struct HTTP_Connection * cc = cs->outbound_connections_head;
462 struct HTTP_Connection * con = NULL;
464 GNUNET_assert((addr_len == sizeof (struct IPv4HttpAddress)) || (addr_len == sizeof (struct IPv6HttpAddress)));
468 if (addr_len == cc->addrlen)
470 if (0 == memcmp(cc->addr, addr, addr_len))
481 con = GNUNET_malloc(sizeof(struct HTTP_Connection) + addr_len);
482 con->addrlen = addr_len;
484 con->url=create_url(plugin, addr, addr_len);
485 con->put_curl_handle = NULL;
486 con->put_connected = GNUNET_NO;
487 con->get_curl_handle = NULL;
488 con->get_connected = GNUNET_NO;
490 memcpy(con->addr, addr, addr_len);
491 GNUNET_CONTAINER_DLL_insert(cs->outbound_connections_head,cs->outbound_connections_tail,con);
492 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Created new connection %X to peer `%s'\n",con,GNUNET_i2s(&cs->identity));
499 * Check if session already knows this address for a inbound connection to this peer
500 * If address not in session, add it to the session
501 * @param cls not needed, can be NULL
502 * @param cs the session
503 * @param addr address
504 * @param addr_len address length
505 * @return the found or created address
507 static struct HTTP_Connection_in * session_check_inbound_address (void * cls, struct Session *cs, const void * addr, size_t addr_len)
509 struct HTTP_Connection_in * cc = cs->inbound_connections_head;
510 struct HTTP_Connection_in * con = NULL;
512 GNUNET_assert((addr_len == sizeof (struct IPv4HttpAddress)) || (addr_len == sizeof (struct IPv6HttpAddress)));
516 if (addr_len == cc->addrlen)
518 if (0 == memcmp(cc->addr, addr, addr_len))
530 con = GNUNET_malloc(sizeof(struct HTTP_Connection_in) + addr_len);
531 con->addrlen = addr_len;
533 con->connected = GNUNET_NO;
535 memcpy(con->addr, addr, addr_len);
536 GNUNET_CONTAINER_DLL_insert(cs->inbound_connections_head,cs->inbound_connections_tail,con);
539 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X for inbound address %s (%s) was found\n",
541 GNUNET_i2s(&cs->identity),
542 http_plugin_address_to_string(NULL,con->addr,con->addrlen));
548 * Callback called by MHD when a connection is terminated
550 static void requestCompletedCallback (void *cls, struct MHD_Connection * connection, void **httpSessionCache)
552 struct HTTP_Connection_in * con;
554 con = *httpSessionCache;
557 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection from peer `%s' was terminated\n",GNUNET_i2s(&con->session->identity));
558 /* session set to inactive */
559 con->is_put_in_progress = GNUNET_NO;
560 con->is_bad_request = GNUNET_NO;
563 static void messageTokenizerCallback (void *cls,
565 const struct GNUNET_MessageHeader *message)
567 struct HTTP_Connection_in * con = cls;
568 GNUNET_assert(con != NULL);
570 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
571 "Forwarding message to transport service, type %u and size %u from `%s' (`%s')\n",
572 ntohs(message->type),
573 ntohs(message->size),
574 GNUNET_i2s(&(con->session->identity)),http_plugin_address_to_string(NULL,con->addr,con->addrlen));
576 con->session->plugin->env->receive (con->session->plugin->env->cls,
577 &con->session->identity,
578 message, 1, con->session,
584 * Check if ip is allowed to connect.
587 acceptPolicyCallback (void *cls,
588 const struct sockaddr *addr, socklen_t addr_len)
591 struct Plugin *plugin = cls;
593 /* Every connection is accepted, nothing more to do here */
597 int server_read_callback (void *cls, uint64_t pos, char *buf, int max)
601 char * test ="Hello World!";
605 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "server_read_callback\n");
606 memcpy(buf,test,strlen(test));
607 bytes_read = strlen(test);
614 * Process GET or PUT request received via MHD. For
615 * GET, queue response that will send back our pending
616 * messages. For PUT, process incoming data and send
617 * to GNUnet core. In either case, check if a session
618 * already exists and create a new one if not.
621 accessHandlerCallback (void *cls,
622 struct MHD_Connection *mhd_connection,
626 const char *upload_data,
627 size_t * upload_data_size, void **httpSessionCache)
629 struct Plugin *plugin = cls;
630 struct MHD_Response *response;
632 struct HTTP_Connection_in * con;
633 const union MHD_ConnectionInfo * conn_info;
634 struct sockaddr_in *addrin;
635 struct sockaddr_in6 *addrin6;
636 char address[INET6_ADDRSTRLEN+14];
637 struct GNUNET_PeerIdentity pi_in;
639 int send_error_to_client;
640 struct IPv4HttpAddress ipv4addr;
641 struct IPv6HttpAddress ipv6addr;
643 GNUNET_assert(cls !=NULL);
644 send_error_to_client = GNUNET_NO;
645 if (NULL == *httpSessionCache)
647 /* check url for peer identity , if invalid send HTTP 404*/
648 res = GNUNET_CRYPTO_hash_from_string ( &url[1], &(pi_in.hashPubKey));
649 if ( GNUNET_SYSERR == res )
651 response = MHD_create_response_from_data (strlen (HTTP_ERROR_RESPONSE),HTTP_ERROR_RESPONSE, MHD_NO, MHD_NO);
652 res = MHD_queue_response (mhd_connection, MHD_HTTP_NOT_FOUND, response);
653 MHD_destroy_response (response);
655 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Peer has no valid ident, sent HTTP 1.1/404\n");
657 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Peer has no valid ident, could not send error\n");
663 con = *httpSessionCache;
667 if (NULL == *httpSessionCache)
669 /* get session for peer identity */
670 cs = session_get (plugin ,&pi_in);
672 conn_info = MHD_get_connection_info(mhd_connection, MHD_CONNECTION_INFO_CLIENT_ADDRESS );
673 /* Incoming IPv4 connection */
674 if ( AF_INET == conn_info->client_addr->sin_family)
676 addrin = conn_info->client_addr;
677 inet_ntop(addrin->sin_family, &(addrin->sin_addr),address,INET_ADDRSTRLEN);
678 memcpy(&ipv4addr.ipv4_addr,&(addrin->sin_addr),sizeof(struct in_addr));
679 ipv4addr.u_port = addrin->sin_port;
680 con = session_check_inbound_address (plugin, cs, (const void *) &ipv4addr, sizeof (struct IPv4HttpAddress));
682 /* Incoming IPv6 connection */
683 if ( AF_INET6 == conn_info->client_addr->sin_family)
685 addrin6 = (struct sockaddr_in6 *) conn_info->client_addr;
686 inet_ntop(addrin6->sin6_family, &(addrin6->sin6_addr),address,INET6_ADDRSTRLEN);
687 memcpy(&ipv6addr.ipv6_addr,&(addrin6->sin6_addr),sizeof(struct in6_addr));
688 ipv6addr.u6_port = addrin6->sin6_port;
689 con = session_check_inbound_address (plugin, cs, &ipv6addr, sizeof (struct IPv6HttpAddress));
691 /* Set closure and update current session*/
693 *httpSessionCache = con;
694 if (con->msgtok==NULL)
695 con->msgtok = GNUNET_SERVER_mst_create (GNUNET_SERVER_MAX_MESSAGE_SIZE - 1, &messageTokenizerCallback, con);
697 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"HTTP Daemon has new an incoming `%s' request from peer `%s' (`%s')\n",
699 GNUNET_i2s(&cs->identity),
700 http_plugin_address_to_string(NULL, con->addr, con->addrlen));
703 /* Is it a PUT or a GET request */
704 if (0 == strcmp (MHD_HTTP_METHOD_PUT, method))
706 if ((*upload_data_size == 0) && (con->is_put_in_progress==GNUNET_NO))
708 con->is_put_in_progress = GNUNET_YES;
712 /* Transmission of all data complete */
713 if ((*upload_data_size == 0) && (con->is_put_in_progress == GNUNET_YES))
715 response = MHD_create_response_from_data (strlen (HTTP_PUT_RESPONSE),HTTP_PUT_RESPONSE, MHD_NO, MHD_NO);
716 res = MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
717 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Sent HTTP/1.1: 200 OK as PUT Response\n",HTTP_PUT_RESPONSE, strlen (HTTP_PUT_RESPONSE), res );
718 MHD_destroy_response (response);
721 con->is_put_in_progress = GNUNET_NO;
722 con->is_bad_request = GNUNET_NO;
727 if ((*upload_data_size > 0) && (con->is_put_in_progress == GNUNET_YES))
729 res = GNUNET_SERVER_mst_receive(con->msgtok, con, upload_data,*upload_data_size, GNUNET_NO, GNUNET_NO);
730 (*upload_data_size) = 0;
736 if ( 0 == strcmp (MHD_HTTP_METHOD_GET, method) )
738 response = MHD_create_response_from_callback(-1,32 * 1024, &server_read_callback, cs, NULL);
739 res = MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
740 MHD_destroy_response (response);
742 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"HTTP Daemon has new an incoming `%s' request from peer `%s' (`%s')\n",
744 GNUNET_i2s(&cs->identity),
745 http_plugin_address_to_string(NULL, con->addr, con->addrlen));
756 * Call MHD to process pending ipv4 requests and then go back
757 * and schedule the next run.
759 static void http_server_daemon_v4_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
761 * Call MHD to process pending ipv6 requests and then go back
762 * and schedule the next run.
764 static void http_server_daemon_v6_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
767 * Function that queries MHD's select sets and
768 * starts the task waiting for them.
770 static GNUNET_SCHEDULER_TaskIdentifier
771 http_server_daemon_prepare (void * cls, struct MHD_Daemon *daemon_handle)
773 struct Plugin *plugin = cls;
774 GNUNET_SCHEDULER_TaskIdentifier ret;
778 struct GNUNET_NETWORK_FDSet *wrs;
779 struct GNUNET_NETWORK_FDSet *wws;
780 struct GNUNET_NETWORK_FDSet *wes;
782 unsigned long long timeout;
784 struct GNUNET_TIME_Relative tv;
786 GNUNET_assert(cls !=NULL);
787 ret = GNUNET_SCHEDULER_NO_TASK;
791 wrs = GNUNET_NETWORK_fdset_create ();
792 wes = GNUNET_NETWORK_fdset_create ();
793 wws = GNUNET_NETWORK_fdset_create ();
795 GNUNET_assert (MHD_YES ==
796 MHD_get_fdset (daemon_handle,
801 haveto = MHD_get_timeout (daemon_handle, &timeout);
802 if (haveto == MHD_YES)
803 tv.value = (uint64_t) timeout;
805 tv = GNUNET_TIME_UNIT_FOREVER_REL;
806 GNUNET_NETWORK_fdset_copy_native (wrs, &rs, max);
807 GNUNET_NETWORK_fdset_copy_native (wws, &ws, max);
808 GNUNET_NETWORK_fdset_copy_native (wes, &es, max);
809 if (daemon_handle == plugin->http_server_daemon_v4)
811 ret = GNUNET_SCHEDULER_add_select (plugin->env->sched,
812 GNUNET_SCHEDULER_PRIORITY_DEFAULT,
813 GNUNET_SCHEDULER_NO_TASK,
817 &http_server_daemon_v4_run,
820 if (daemon_handle == plugin->http_server_daemon_v6)
822 ret = GNUNET_SCHEDULER_add_select (plugin->env->sched,
823 GNUNET_SCHEDULER_PRIORITY_DEFAULT,
824 GNUNET_SCHEDULER_NO_TASK,
828 &http_server_daemon_v6_run,
831 GNUNET_NETWORK_fdset_destroy (wrs);
832 GNUNET_NETWORK_fdset_destroy (wws);
833 GNUNET_NETWORK_fdset_destroy (wes);
838 * Call MHD to process pending requests and then go back
839 * and schedule the next run.
841 static void http_server_daemon_v4_run (void *cls,
842 const struct GNUNET_SCHEDULER_TaskContext *tc)
844 struct Plugin *plugin = cls;
846 GNUNET_assert(cls !=NULL);
847 if (plugin->http_server_task_v4 != GNUNET_SCHEDULER_NO_TASK)
848 plugin->http_server_task_v4 = GNUNET_SCHEDULER_NO_TASK;
850 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
853 GNUNET_assert (MHD_YES == MHD_run (plugin->http_server_daemon_v4));
854 plugin->http_server_task_v4 = http_server_daemon_prepare (plugin, plugin->http_server_daemon_v4);
860 * Call MHD to process pending requests and then go back
861 * and schedule the next run.
863 static void http_server_daemon_v6_run (void *cls,
864 const struct GNUNET_SCHEDULER_TaskContext *tc)
866 struct Plugin *plugin = cls;
868 GNUNET_assert(cls !=NULL);
869 if (plugin->http_server_task_v6 != GNUNET_SCHEDULER_NO_TASK)
870 plugin->http_server_task_v6 = GNUNET_SCHEDULER_NO_TASK;
872 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
875 GNUNET_assert (MHD_YES == MHD_run (plugin->http_server_daemon_v6));
876 plugin->http_server_task_v6 = http_server_daemon_prepare (plugin, plugin->http_server_daemon_v6);
881 * Removes a message from the linked list of messages
882 * @param con connection to remove message from
883 * @param msg message to remove
884 * @return GNUNET_SYSERR if msg not found, GNUNET_OK on success
887 static int remove_http_message(struct HTTP_Connection * con, struct HTTP_Message * msg)
889 GNUNET_CONTAINER_DLL_remove(con->pending_msgs_head,con->pending_msgs_tail,msg);
895 static size_t header_function( void *ptr, size_t size, size_t nmemb, void *stream)
897 struct HTTP_Connection * con = stream;
900 size_t len = size * nmemb;
903 /* Getting last http result code */
904 if (CURLE_OK == curl_easy_getinfo(con->get_curl_handle, CURLINFO_RESPONSE_CODE, &http_result))
906 if (http_result == 200)
908 con->get_connected = GNUNET_YES;
909 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: inbound connected\n",con);
913 con->get_connected = GNUNET_NO;
914 //GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: inbound connected\n",con);
920 if ((size * nmemb) < SIZE_MAX)
921 tmp = GNUNET_malloc (len+1);
923 if ((tmp != NULL) && (len > 0))
928 if (tmp[len-2] == 13)
932 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Header: `%s' %u \n",tmp, http_result);
942 * Callback method used with libcurl
943 * Method is called when libcurl needs to read data during sending
944 * @param stream pointer where to write data
945 * @param size size of an individual element
946 * @param nmemb count of elements that can be written to the buffer
947 * @param ptr source pointer, passed to the libcurl handle
948 * @return bytes written to stream
950 static size_t send_read_callback(void *stream, size_t size, size_t nmemb, void *ptr)
952 struct HTTP_Connection * con = ptr;
953 struct HTTP_Message * msg = con->pending_msgs_tail;
957 if (con->pending_msgs_tail == NULL)
959 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: No Message to send, pausing connection\n",con);
960 con->put_send_paused = GNUNET_YES;
961 return CURL_READFUNC_PAUSE;
964 msg = con->pending_msgs_tail;
966 if (msg->pos < msg->size)
968 /* data fit in buffer */
969 if ((msg->size - msg->pos) <= (size * nmemb))
971 len = (msg->size - msg->pos);
972 memcpy(stream, &msg->buf[msg->pos], len);
979 memcpy(stream, &msg->buf[msg->pos], len);
984 /* no data to send */
990 if ( msg->pos == msg->size)
992 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: Message with %u bytes sent, removing message from queue \n",con, msg->pos);
993 /* Calling transmit continuation */
994 if (( NULL != con->pending_msgs_tail) && (NULL != con->pending_msgs_tail->transmit_cont))
995 msg->transmit_cont (con->pending_msgs_tail->transmit_cont_cls,&(con->session)->identity,GNUNET_OK);
996 remove_http_message(con, msg);
1002 * Callback method used with libcurl
1003 * Method is called when libcurl needs to write data during sending
1004 * @param stream pointer where to write data
1005 * @param size size of an individual element
1006 * @param nmemb count of elements that can be written to the buffer
1007 * @param ptr destination pointer, passed to the libcurl handle
1008 * @return bytes read from stream
1010 static size_t send_curl_write_callback( void *stream, size_t size, size_t nmemb, void *ptr)
1012 struct HTTP_Connection * con = ptr;
1015 data = GNUNET_malloc(size*nmemb +1);
1018 memcpy( data, stream, size*nmemb);
1019 data[size*nmemb] = '\0';
1020 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: recieved %s\n",con,data);
1023 return (size * nmemb);
1028 * Function setting up file descriptors and scheduling task to run
1029 * @param cls closure
1030 * @param ses session to send data to
1031 * @return bytes sent to peer
1033 static size_t send_schedule(void *cls, struct Session* ses );
1038 * Function setting up curl handle and selecting message to send
1040 * @param ses session to send data to
1041 * @param con connection
1042 * @return bytes sent to peer
1044 static ssize_t send_check_connections (void *cls, struct Session* ses , struct HTTP_Connection *con)
1046 struct Plugin *plugin = cls;
1049 struct HTTP_Message * msg;
1050 struct GNUNET_TIME_Relative timeout = GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT;
1052 GNUNET_assert(cls !=NULL);
1054 if (con->get_connected == GNUNET_NO)
1056 if (con->get_curl_handle == NULL)
1058 con->get_curl_handle = curl_easy_init();
1060 curl_easy_setopt(con->get_curl_handle, CURLOPT_VERBOSE, 1L);
1062 curl_easy_setopt(con->get_curl_handle, CURLOPT_URL, con->url);
1063 //curl_easy_setopt(con->put_curl_handle, CURLOPT_PUT, 1L);
1064 curl_easy_setopt(con->get_curl_handle, CURLOPT_HEADERFUNCTION, &header_function);
1065 curl_easy_setopt(con->get_curl_handle, CURLOPT_WRITEHEADER, con->get_curl_handle);
1066 curl_easy_setopt(con->get_curl_handle, CURLOPT_READFUNCTION, send_read_callback);
1067 curl_easy_setopt(con->get_curl_handle, CURLOPT_READDATA, con);
1068 curl_easy_setopt(con->get_curl_handle, CURLOPT_WRITEFUNCTION, send_curl_write_callback);
1069 curl_easy_setopt(con->get_curl_handle, CURLOPT_WRITEDATA, con);
1070 curl_easy_setopt(con->get_curl_handle, CURLOPT_TIMEOUT, (long) timeout.value);
1071 curl_easy_setopt(con->get_curl_handle, CURLOPT_PRIVATE, con);
1072 curl_easy_setopt(con->get_curl_handle, CURLOPT_CONNECTTIMEOUT, HTTP_CONNECT_TIMEOUT_DBG);
1073 curl_easy_setopt(con->get_curl_handle, CURLOPT_BUFFERSIZE, GNUNET_SERVER_MAX_MESSAGE_SIZE);
1075 mret = curl_multi_add_handle(plugin->multi_handle, con->get_curl_handle);
1076 if (mret != CURLM_OK)
1078 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1079 _("%s failed at %s:%d: `%s'\n"),
1080 "curl_multi_add_handle", __FILE__, __LINE__,
1081 curl_multi_strerror (mret));
1084 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: inbound not connected, initiating connection\n",con);
1088 /* PUT already connected, no need to initiate connection */
1089 if ((con->put_connected == GNUNET_YES) && (con->put_curl_handle != NULL))
1091 if (con->put_send_paused == GNUNET_NO)
1093 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: outbound active, enqueueing message\n",con);
1096 if (con->put_send_paused == GNUNET_YES)
1098 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: outbound paused, unpausing existing connection and enqueueing message\n",con);
1099 curl_easy_pause(con->put_curl_handle,CURLPAUSE_CONT);
1100 con->put_send_paused=GNUNET_NO;
1105 /* not connected, initiate connection */
1106 if ( NULL == con->put_curl_handle)
1107 con->put_curl_handle = curl_easy_init();
1108 GNUNET_assert (con->put_curl_handle != NULL);
1109 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: outbound not connected, initiating connection\n",con);
1111 GNUNET_assert (NULL != con->pending_msgs_tail);
1112 msg = con->pending_msgs_tail;
1115 curl_easy_setopt(con->put_curl_handle, CURLOPT_VERBOSE, 1L);
1117 curl_easy_setopt(con->put_curl_handle, CURLOPT_URL, con->url);
1118 curl_easy_setopt(con->put_curl_handle, CURLOPT_PUT, 1L);
1119 curl_easy_setopt(con->put_curl_handle, CURLOPT_READFUNCTION, send_read_callback);
1120 curl_easy_setopt(con->put_curl_handle, CURLOPT_READDATA, con);
1121 curl_easy_setopt(con->put_curl_handle, CURLOPT_WRITEFUNCTION, send_curl_write_callback);
1122 curl_easy_setopt(con->put_curl_handle, CURLOPT_READDATA, con);
1123 curl_easy_setopt(con->put_curl_handle, CURLOPT_TIMEOUT, (long) timeout.value);
1124 curl_easy_setopt(con->put_curl_handle, CURLOPT_PRIVATE, con);
1125 curl_easy_setopt(con->put_curl_handle, CURLOPT_CONNECTTIMEOUT, HTTP_CONNECT_TIMEOUT_DBG);
1126 curl_easy_setopt(con->put_curl_handle, CURLOPT_BUFFERSIZE, GNUNET_SERVER_MAX_MESSAGE_SIZE);
1128 mret = curl_multi_add_handle(plugin->multi_handle, con->put_curl_handle);
1129 if (mret != CURLM_OK)
1131 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1132 _("%s failed at %s:%d: `%s'\n"),
1133 "curl_multi_add_handle", __FILE__, __LINE__,
1134 curl_multi_strerror (mret));
1137 con->put_connected = GNUNET_YES;
1138 bytes_sent = send_schedule (plugin, ses);
1142 static void send_execute (void *cls,
1143 const struct GNUNET_SCHEDULER_TaskContext *tc)
1145 struct Plugin *plugin = cls;
1146 static unsigned int handles_last_run;
1148 struct CURLMsg *msg;
1150 struct HTTP_Connection * con = NULL;
1151 struct Session * cs = NULL;
1154 GNUNET_assert(cls !=NULL);
1155 plugin->http_server_task_send = GNUNET_SCHEDULER_NO_TASK;
1156 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
1162 mret = curl_multi_perform (plugin->multi_handle, &running);
1163 if (running < handles_last_run)
1168 msg = curl_multi_info_read (plugin->multi_handle, &running);
1171 /* get session for affected curl handle */
1172 GNUNET_assert ( msg->easy_handle != NULL );
1173 curl_easy_getinfo(msg->easy_handle, CURLINFO_PRIVATE, (char *) &con);
1174 GNUNET_assert ( con != NULL );
1176 GNUNET_assert ( cs != NULL );
1181 if ( (msg->data.result != CURLE_OK) &&
1182 (msg->data.result != CURLE_GOT_NOTHING) )
1184 /* sending msg failed*/
1185 if (msg->easy_handle == con->put_curl_handle)
1187 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
1188 _("Connection %X: HTTP PUT to peer `%s' (`%s') failed: `%s' `%s'\n"),
1190 GNUNET_i2s(&cs->identity),
1191 http_plugin_address_to_string(NULL, con->addr, con->addrlen),
1192 "curl_multi_perform",
1193 curl_easy_strerror (msg->data.result));
1195 con->put_connected = GNUNET_NO;
1196 curl_easy_cleanup(con->put_curl_handle);
1197 con->put_curl_handle=NULL;
1198 if (( NULL != con->pending_msgs_tail) && ( NULL != con->pending_msgs_tail->transmit_cont))
1199 con->pending_msgs_tail->transmit_cont (con->pending_msgs_tail->transmit_cont_cls,&con->session->identity,GNUNET_SYSERR);
1201 /* GET connection failed */
1202 if (msg->easy_handle == con->get_curl_handle)
1204 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
1205 _("Connection %X: HTTP GET to peer `%s' (`%s') failed: `%s' `%s'\n"),
1207 GNUNET_i2s(&cs->identity),
1208 http_plugin_address_to_string(NULL, con->addr, con->addrlen),
1209 "curl_multi_perform",
1210 curl_easy_strerror (msg->data.result));
1211 con->get_connected = GNUNET_NO;
1212 curl_easy_cleanup(con->get_curl_handle);
1213 con->get_curl_handle=NULL;
1218 if (msg->easy_handle == con->put_curl_handle)
1220 GNUNET_assert (CURLE_OK == curl_easy_getinfo(msg->easy_handle, CURLINFO_RESPONSE_CODE, &http_result));
1221 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1222 "Connection %X: HTTP PUT connection to peer `%s' (`%s') was closed with HTTP code %u\n",
1224 GNUNET_i2s(&cs->identity),
1225 http_plugin_address_to_string(NULL, con->addr, con->addrlen),
1228 /* Calling transmit continuation */
1229 if (( NULL != con->pending_msgs_tail) && (NULL != con->pending_msgs_tail->transmit_cont))
1231 /* HTTP 1xx : Last message before here was informational */
1232 if ((http_result >=100) && (http_result < 200))
1233 con->pending_msgs_tail->transmit_cont (con->pending_msgs_tail->transmit_cont_cls,&cs->identity,GNUNET_OK);
1234 /* HTTP 2xx: successful operations */
1235 if ((http_result >=200) && (http_result < 300))
1236 con->pending_msgs_tail->transmit_cont (con->pending_msgs_tail->transmit_cont_cls,&cs->identity,GNUNET_OK);
1237 /* HTTP 3xx..5xx: error */
1238 if ((http_result >=300) && (http_result < 600))
1239 con->pending_msgs_tail->transmit_cont (con->pending_msgs_tail->transmit_cont_cls,&cs->identity,GNUNET_SYSERR);
1241 curl_easy_cleanup(con->put_curl_handle);
1242 con->put_connected = GNUNET_NO;
1243 con->put_curl_handle=NULL;
1245 if (msg->easy_handle == con->get_curl_handle)
1247 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1248 "Connection %X: HTTP GET connection to peer `%s' (`%s') was closed with HTTP code %u\n",
1250 GNUNET_i2s(&cs->identity),
1251 http_plugin_address_to_string(NULL, con->addr, con->addrlen),
1254 con->get_connected = GNUNET_NO;
1255 curl_easy_cleanup(con->get_curl_handle);
1256 con->get_curl_handle=NULL;
1259 if (con->pending_msgs_tail != NULL)
1261 if (con->pending_msgs_tail->pos>0)
1262 remove_http_message(con, con->pending_msgs_tail);
1263 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Message could not be removed from session `%s'\n", GNUNET_i2s(&cs->identity));
1271 while ( (running > 0) );
1273 handles_last_run = running;
1275 while (mret == CURLM_CALL_MULTI_PERFORM);
1276 send_schedule(plugin, cls);
1281 * Function setting up file descriptors and scheduling task to run
1282 * @param ses session to send data to
1283 * @return bytes sent to peer
1285 static size_t send_schedule(void *cls, struct Session* ses )
1287 struct Plugin *plugin = cls;
1292 struct GNUNET_NETWORK_FDSet *grs;
1293 struct GNUNET_NETWORK_FDSet *gws;
1297 GNUNET_assert(cls !=NULL);
1302 mret = curl_multi_fdset (plugin->multi_handle, &rs, &ws, &es, &max);
1303 if (mret != CURLM_OK)
1305 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1306 _("%s failed at %s:%d: `%s'\n"),
1307 "curl_multi_fdset", __FILE__, __LINE__,
1308 curl_multi_strerror (mret));
1311 mret = curl_multi_timeout (plugin->multi_handle, &to);
1312 if (mret != CURLM_OK)
1314 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1315 _("%s failed at %s:%d: `%s'\n"),
1316 "curl_multi_timeout", __FILE__, __LINE__,
1317 curl_multi_strerror (mret));
1321 grs = GNUNET_NETWORK_fdset_create ();
1322 gws = GNUNET_NETWORK_fdset_create ();
1323 GNUNET_NETWORK_fdset_copy_native (grs, &rs, max + 1);
1324 GNUNET_NETWORK_fdset_copy_native (gws, &ws, max + 1);
1325 plugin->http_server_task_send = GNUNET_SCHEDULER_add_select (plugin->env->sched,
1326 GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1327 GNUNET_SCHEDULER_NO_TASK,
1328 GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 0),
1333 GNUNET_NETWORK_fdset_destroy (gws);
1334 GNUNET_NETWORK_fdset_destroy (grs);
1336 /* FIXME: return bytes REALLY sent */
1342 * Function that can be used by the transport service to transmit
1343 * a message using the plugin. Note that in the case of a
1344 * peer disconnecting, the continuation MUST be called
1345 * prior to the disconnect notification itself. This function
1346 * will be called with this peer's HELLO message to initiate
1347 * a fresh connection to another peer.
1349 * @param cls closure
1350 * @param target who should receive this message
1351 * @param msgbuf the message to transmit
1352 * @param msgbuf_size number of bytes in 'msgbuf'
1353 * @param priority how important is the message (most plugins will
1354 * ignore message priority and just FIFO)
1355 * @param timeout how long to wait at most for the transmission (does not
1356 * require plugins to discard the message after the timeout,
1357 * just advisory for the desired delay; most plugins will ignore
1359 * @param session which session must be used (or NULL for "any")
1360 * @param addr the address to use (can be NULL if the plugin
1361 * is "on its own" (i.e. re-use existing TCP connection))
1362 * @param addrlen length of the address in bytes
1363 * @param force_address GNUNET_YES if the plugin MUST use the given address,
1364 * GNUNET_NO means the plugin may use any other address and
1365 * GNUNET_SYSERR means that only reliable existing
1366 * bi-directional connections should be used (regardless
1368 * @param cont continuation to call once the message has
1369 * been transmitted (or if the transport is ready
1370 * for the next transmission call; or if the
1371 * peer disconnected...); can be NULL
1372 * @param cont_cls closure for cont
1373 * @return number of bytes used (on the physical network, with overheads);
1374 * -1 on hard errors (i.e. address invalid); 0 is a legal value
1375 * and does NOT mean that the message was not transmitted (DV)
1378 http_plugin_send (void *cls,
1379 const struct GNUNET_PeerIdentity *target,
1382 unsigned int priority,
1383 struct GNUNET_TIME_Relative to,
1384 struct Session *session,
1388 GNUNET_TRANSPORT_TransmitContinuation cont,
1391 struct Plugin *plugin = cls;
1393 struct HTTP_Message *msg;
1394 struct HTTP_Connection *con;
1397 GNUNET_assert(cls !=NULL);
1398 GNUNET_assert ((addr!=NULL) && (addrlen != 0));
1400 /* get session from hashmap */
1401 cs = session_get(plugin, target);
1402 con = session_check_outbound_address(plugin, cs, addr, addrlen);
1404 char * force = GNUNET_malloc(30);
1406 if (force_address == GNUNET_YES)
1407 strcpy(force,"forced addr.");
1408 if (force_address == GNUNET_NO)
1409 strcpy(force,"any addr.");
1410 if (force_address == GNUNET_SYSERR)
1411 strcpy(force,"reliable bi-direc. address addr.");
1412 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Transport tells me to send %u bytes to `%s' %s (%s), session: %X\n",
1414 GNUNET_i2s(&cs->identity),
1416 http_plugin_address_to_string(NULL, addr, addrlen),
1419 //GNUNET_free(force);
1421 msg = GNUNET_malloc (sizeof (struct HTTP_Message) + msgbuf_size);
1423 msg->size = msgbuf_size;
1425 msg->buf = (char *) &msg[1];
1426 msg->transmit_cont = cont;
1427 msg->transmit_cont_cls = cont_cls;
1428 memcpy (msg->buf,msgbuf, msgbuf_size);
1430 /* must use this address */
1431 if (force_address == GNUNET_YES)
1433 /* enqueue in connection message queue */
1434 GNUNET_CONTAINER_DLL_insert(con->pending_msgs_head,con->pending_msgs_tail,msg);
1436 /* can use existing connection to send */
1439 /* enqueue in connection message queue */
1440 GNUNET_CONTAINER_DLL_insert(con->pending_msgs_head,con->pending_msgs_tail,msg);
1442 return send_check_connections (plugin, cs, con);
1448 * Function that can be used to force the plugin to disconnect
1449 * from the given peer and cancel all previous transmissions
1450 * (and their continuationc).
1452 * @param cls closure
1453 * @param target peer from which to disconnect
1456 http_plugin_disconnect (void *cls,
1457 const struct GNUNET_PeerIdentity *target)
1459 struct Plugin *plugin = cls;
1460 struct HTTP_Connection *con;
1463 /* get session from hashmap */
1464 cs = session_get(plugin, target);
1465 con = cs->outbound_connections_head;
1469 if (con->put_curl_handle!=NULL)
1470 curl_easy_cleanup(con->put_curl_handle);
1471 con->put_curl_handle=NULL;
1472 con->put_connected = GNUNET_NO;
1473 while (con->pending_msgs_head!=NULL)
1475 remove_http_message(con, con->pending_msgs_head);
1483 * Convert the transports address to a nice, human-readable
1486 * @param cls closure
1487 * @param type name of the transport that generated the address
1488 * @param addr one of the addresses of the host, NULL for the last address
1489 * the specific address format depends on the transport
1490 * @param addrlen length of the address
1491 * @param numeric should (IP) addresses be displayed in numeric form?
1492 * @param timeout after how long should we give up?
1493 * @param asc function to call on each string
1494 * @param asc_cls closure for asc
1497 http_plugin_address_pretty_printer (void *cls,
1502 struct GNUNET_TIME_Relative timeout,
1503 GNUNET_TRANSPORT_AddressStringCallback
1506 const struct IPv4HttpAddress *t4;
1507 const struct IPv6HttpAddress *t6;
1508 struct sockaddr_in a4;
1509 struct sockaddr_in6 a6;
1515 GNUNET_assert(cls !=NULL);
1516 if (addrlen == sizeof (struct IPv6HttpAddress))
1518 address = GNUNET_malloc (INET6_ADDRSTRLEN);
1520 a6.sin6_addr = t6->ipv6_addr;
1521 inet_ntop(AF_INET6, &(a6.sin6_addr),address,INET6_ADDRSTRLEN);
1522 port = ntohs(t6->u6_port);
1524 else if (addrlen == sizeof (struct IPv4HttpAddress))
1526 address = GNUNET_malloc (INET_ADDRSTRLEN);
1528 a4.sin_addr.s_addr = t4->ipv4_addr;
1529 inet_ntop(AF_INET, &(a4.sin_addr),address,INET_ADDRSTRLEN);
1530 port = ntohs(t4->u_port);
1534 /* invalid address */
1535 GNUNET_break_op (0);
1536 asc (asc_cls, NULL);
1539 res = GNUNET_asprintf(&ret,"http://%s:%u/",address,port);
1540 GNUNET_free (address);
1541 GNUNET_assert(res != 0);
1549 * Another peer has suggested an address for this
1550 * peer and transport plugin. Check that this could be a valid
1551 * address. If so, consider adding it to the list
1554 * @param cls closure
1555 * @param addr pointer to the address
1556 * @param addrlen length of addr
1557 * @return GNUNET_OK if this is a plausible address for this peer
1561 http_plugin_address_suggested (void *cls,
1562 const void *addr, size_t addrlen)
1564 struct Plugin *plugin = cls;
1565 struct IPv4HttpAddress *v4;
1566 struct IPv6HttpAddress *v6;
1569 GNUNET_assert(cls !=NULL);
1570 if ((addrlen != sizeof (struct IPv4HttpAddress)) &&
1571 (addrlen != sizeof (struct IPv6HttpAddress)))
1573 return GNUNET_SYSERR;
1575 if (addrlen == sizeof (struct IPv4HttpAddress))
1577 v4 = (struct IPv4HttpAddress *) addr;
1578 if (INADDR_LOOPBACK == ntohl(v4->ipv4_addr))
1580 return GNUNET_SYSERR;
1582 port = ntohs (v4->u_port);
1583 if (port != plugin->port_inbound)
1585 return GNUNET_SYSERR;
1590 v6 = (struct IPv6HttpAddress *) addr;
1591 if (IN6_IS_ADDR_LINKLOCAL (&v6->ipv6_addr))
1593 return GNUNET_SYSERR;
1595 port = ntohs (v6->u6_port);
1596 if (port != plugin->port_inbound)
1598 return GNUNET_SYSERR;
1606 * Function called for a quick conversion of the binary address to
1607 * a numeric address. Note that the caller must not free the
1608 * address and that the next call to this function is allowed
1609 * to override the address again.
1611 * @param cls closure
1612 * @param addr binary address
1613 * @param addrlen length of the address
1614 * @return string representing the same address
1617 http_plugin_address_to_string (void *cls,
1621 const struct IPv4HttpAddress *t4;
1622 const struct IPv6HttpAddress *t6;
1623 struct sockaddr_in a4;
1624 struct sockaddr_in6 a6;
1630 if (addrlen == sizeof (struct IPv6HttpAddress))
1632 address = GNUNET_malloc (INET6_ADDRSTRLEN);
1634 a6.sin6_addr = t6->ipv6_addr;
1635 inet_ntop(AF_INET6, &(a6.sin6_addr),address,INET6_ADDRSTRLEN);
1636 port = ntohs(t6->u6_port);
1638 else if (addrlen == sizeof (struct IPv4HttpAddress))
1640 address = GNUNET_malloc (INET_ADDRSTRLEN);
1642 a4.sin_addr.s_addr = t4->ipv4_addr;
1643 inet_ntop(AF_INET, &(a4.sin_addr),address,INET_ADDRSTRLEN);
1644 port = ntohs(t4->u_port);
1648 /* invalid address */
1651 res = GNUNET_asprintf(&ret,"%s:%u",address,port);
1652 GNUNET_free (address);
1653 GNUNET_assert(res != 0);
1658 * Add the IP of our network interface to the list of
1659 * our external IP addresses.
1661 * @param cls the 'struct Plugin*'
1662 * @param name name of the interface
1663 * @param isDefault do we think this may be our default interface
1664 * @param addr address of the interface
1665 * @param addrlen number of bytes in addr
1666 * @return GNUNET_OK to continue iterating
1669 process_interfaces (void *cls,
1672 const struct sockaddr *addr, socklen_t addrlen)
1674 struct Plugin *plugin = cls;
1675 struct IPv4HttpAddress * t4;
1676 struct IPv6HttpAddress * t6;
1679 GNUNET_assert(cls !=NULL);
1680 af = addr->sa_family;
1683 t4 = GNUNET_malloc(sizeof(struct IPv4HttpAddress));
1684 if (INADDR_LOOPBACK == ntohl(((struct sockaddr_in *) addr)->sin_addr.s_addr))
1686 /* skip loopback addresses */
1689 t4->ipv4_addr = ((struct sockaddr_in *) addr)->sin_addr.s_addr;
1690 t4->u_port = htons (plugin->port_inbound);
1691 plugin->env->notify_address(plugin->env->cls,"http",t4, sizeof (struct IPv4HttpAddress), GNUNET_TIME_UNIT_FOREVER_REL);
1694 else if (af == AF_INET6)
1696 t6 = GNUNET_malloc(sizeof(struct IPv6HttpAddress));
1697 if (IN6_IS_ADDR_LINKLOCAL (&((struct sockaddr_in6 *) addr)->sin6_addr))
1699 /* skip link local addresses */
1702 if (IN6_IS_ADDR_LOOPBACK (&((struct sockaddr_in6 *) addr)->sin6_addr))
1704 /* skip loopback addresses */
1707 memcpy (&t6->ipv6_addr,
1708 &((struct sockaddr_in6 *) addr)->sin6_addr,
1709 sizeof (struct in6_addr));
1710 t6->u6_port = htons (plugin->port_inbound);
1711 plugin->env->notify_address(plugin->env->cls,"http",t6,sizeof (struct IPv6HttpAddress) , GNUNET_TIME_UNIT_FOREVER_REL);
1715 int hashMapFreeIterator (void *cls, const GNUNET_HashCode *key, void *value)
1717 struct Session * cs = value;
1718 struct HTTP_Connection * con = cs->outbound_connections_head;
1719 struct HTTP_Connection * tmp_con = cs->outbound_connections_head;
1720 struct HTTP_Message * msg = NULL;
1721 struct HTTP_Message * tmp_msg = NULL;
1723 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Freeing session for peer `%s'\n",GNUNET_i2s(&cs->identity));
1725 /* freeing connections */
1728 GNUNET_free(con->url);
1729 if (con->put_curl_handle!=NULL)
1730 curl_easy_cleanup(con->put_curl_handle);
1731 con->put_curl_handle = NULL;
1732 msg = con->pending_msgs_head;
1743 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"All sessions freed \n");
1750 * Exit point from the plugin.
1753 libgnunet_plugin_transport_http_done (void *cls)
1755 struct GNUNET_TRANSPORT_PluginFunctions *api = cls;
1756 struct Plugin *plugin = api->cls;
1759 GNUNET_assert(cls !=NULL);
1762 if ( plugin->http_server_task_v4 != GNUNET_SCHEDULER_NO_TASK)
1764 GNUNET_SCHEDULER_cancel(plugin->env->sched, plugin->http_server_task_v4);
1765 plugin->http_server_task_v4 = GNUNET_SCHEDULER_NO_TASK;
1768 if ( plugin->http_server_task_v6 != GNUNET_SCHEDULER_NO_TASK)
1770 GNUNET_SCHEDULER_cancel(plugin->env->sched, plugin->http_server_task_v6);
1771 plugin->http_server_task_v6 = GNUNET_SCHEDULER_NO_TASK;
1774 if ( plugin->http_server_task_send != GNUNET_SCHEDULER_NO_TASK)
1776 GNUNET_SCHEDULER_cancel(plugin->env->sched, plugin->http_server_task_send);
1777 plugin->http_server_task_send = GNUNET_SCHEDULER_NO_TASK;
1780 if (plugin->http_server_daemon_v4 != NULL)
1782 MHD_stop_daemon (plugin->http_server_daemon_v4);
1783 plugin->http_server_daemon_v4 = NULL;
1785 if (plugin->http_server_daemon_v6 != NULL)
1787 MHD_stop_daemon (plugin->http_server_daemon_v6);
1788 plugin->http_server_daemon_v6 = NULL;
1791 /* free all sessions */
1792 GNUNET_CONTAINER_multihashmap_iterate (plugin->sessions,
1793 &hashMapFreeIterator,
1796 GNUNET_CONTAINER_multihashmap_destroy (plugin->sessions);
1798 mret = curl_multi_cleanup(plugin->multi_handle);
1799 if ( CURLM_OK != mret)
1800 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"curl multihandle clean up failed");
1802 GNUNET_free (plugin);
1804 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Unload http plugin complete...\n");
1810 * Entry point for the plugin.
1813 libgnunet_plugin_transport_http_init (void *cls)
1815 struct GNUNET_TRANSPORT_PluginEnvironment *env = cls;
1816 struct Plugin *plugin;
1817 struct GNUNET_TRANSPORT_PluginFunctions *api;
1818 struct GNUNET_TIME_Relative gn_timeout;
1819 long long unsigned int port;
1821 GNUNET_assert(cls !=NULL);
1822 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting http plugin...\n");
1824 plugin = GNUNET_malloc (sizeof (struct Plugin));
1826 plugin->sessions = NULL;
1828 api = GNUNET_malloc (sizeof (struct GNUNET_TRANSPORT_PluginFunctions));
1830 api->send = &http_plugin_send;
1831 api->disconnect = &http_plugin_disconnect;
1832 api->address_pretty_printer = &http_plugin_address_pretty_printer;
1833 api->check_address = &http_plugin_address_suggested;
1834 api->address_to_string = &http_plugin_address_to_string;
1836 /* Hashing our identity to use it in URLs */
1837 GNUNET_CRYPTO_hash_to_enc ( &(plugin->env->my_identity->hashPubKey), &plugin->my_ascii_hash_ident);
1839 /* Reading port number from config file */
1841 GNUNET_CONFIGURATION_get_value_number (env->cfg,
1847 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
1850 ("Require valid port number for transport plugin `%s' in configuration!\n"),
1852 libgnunet_plugin_transport_http_done (api);
1855 GNUNET_assert ((port > 0) && (port <= 65535));
1856 plugin->port_inbound = port;
1857 gn_timeout = GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT;
1858 if ((plugin->http_server_daemon_v4 == NULL) && (plugin->http_server_daemon_v6 == NULL) && (port != 0))
1860 plugin->http_server_daemon_v6 = MHD_start_daemon (MHD_USE_IPv6,
1862 &acceptPolicyCallback,
1863 plugin , &accessHandlerCallback, plugin,
1864 MHD_OPTION_CONNECTION_LIMIT, (unsigned int) 16,
1865 MHD_OPTION_PER_IP_CONNECTION_LIMIT, (unsigned int) 1,
1866 MHD_OPTION_CONNECTION_TIMEOUT, (gn_timeout.value / 1000),
1867 MHD_OPTION_CONNECTION_MEMORY_LIMIT, (size_t) (16 * 1024),
1868 MHD_OPTION_NOTIFY_COMPLETED, &requestCompletedCallback, NULL,
1870 plugin->http_server_daemon_v4 = MHD_start_daemon (MHD_NO_FLAG,
1872 &acceptPolicyCallback,
1873 plugin , &accessHandlerCallback, plugin,
1874 MHD_OPTION_CONNECTION_LIMIT, (unsigned int) 16,
1875 MHD_OPTION_PER_IP_CONNECTION_LIMIT, (unsigned int) 1,
1876 MHD_OPTION_CONNECTION_TIMEOUT, (gn_timeout.value / 1000),
1877 MHD_OPTION_CONNECTION_MEMORY_LIMIT, (size_t) (16 * 1024),
1878 MHD_OPTION_NOTIFY_COMPLETED, &requestCompletedCallback, NULL,
1881 if (plugin->http_server_daemon_v4 != NULL)
1882 plugin->http_server_task_v4 = http_server_daemon_prepare (plugin, plugin->http_server_daemon_v4);
1883 if (plugin->http_server_daemon_v6 != NULL)
1884 plugin->http_server_task_v6 = http_server_daemon_prepare (plugin, plugin->http_server_daemon_v6);
1886 if (plugin->http_server_task_v4 != GNUNET_SCHEDULER_NO_TASK)
1887 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting MHD with IPv4 on port %u\n",port);
1888 else if (plugin->http_server_task_v6 != GNUNET_SCHEDULER_NO_TASK)
1889 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting MHD with IPv4 and IPv6 on port %u\n",port);
1892 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"No MHD was started, transport plugin not functional!\n");
1893 libgnunet_plugin_transport_http_done (api);
1897 /* Initializing cURL */
1898 curl_global_init(CURL_GLOBAL_ALL);
1899 plugin->multi_handle = curl_multi_init();
1901 if ( NULL == plugin->multi_handle )
1903 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
1905 _("Could not initialize curl multi handle, failed to start http plugin!\n"),
1907 libgnunet_plugin_transport_http_done (api);
1911 plugin->sessions = GNUNET_CONTAINER_multihashmap_create (10);
1912 GNUNET_OS_network_interfaces_list (&process_interfaces, plugin);
1917 /* end of plugin_transport_http.c */