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.
10 GNUnet is distributed in the hope that it will be useful, but
11 WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 General Public License for more details.
15 You should have received a copy of the GNU General Public License
16 along with GNUnet; see the file COPYING. If not, write to the
17 Free Software Foundation, Inc., 59 Temple Place - Suite 330,
18 Boston, MA 02111-1307, USA.
22 * @file transport/plugin_transport_http.c
23 * @brief http transport service plugin
24 * @author Matthias Wachs
28 #include "gnunet_common.h"
29 #include "gnunet_constants.h"
30 #include "gnunet_protocols.h"
31 #include "gnunet_connection_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>
43 #define DEBUG_HTTP GNUNET_NO
44 #define DEBUG_CURL GNUNET_NO
45 #define DEBUG_MHD GNUNET_YES
46 #define DEBUG_CONNECTIONS GNUNET_NO
47 #define DEBUG_SESSION_SELECTION GNUNET_NO
49 #define CURL_TCP_NODELAY GNUNET_YES
51 #define INBOUND GNUNET_NO
52 #define OUTBOUND GNUNET_YES
54 #define PROTOCOL_PREFIX "http"
57 * Text of the response sent back after the last bytes of a PUT
58 * request have been received (just to formally obey the HTTP
61 #define HTTP_PUT_RESPONSE "Thank you!"
64 * After how long do we expire an address that we
65 * learned from another peer if it is not reconfirmed
68 #define LEARNED_ADDRESS_EXPIRATION GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_HOURS, 6)
71 * Page returned if request invalid
73 #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>"
76 * Timeout for a http connect
78 #define HTTP_CONNECT_TIMEOUT 30
82 * Network format for IPv4 addresses.
84 struct IPv4HttpAddress
87 * IPv4 address, in network byte order.
89 uint32_t ipv4_addr GNUNET_PACKED;
92 * Port number, in network byte order.
94 uint16_t u_port GNUNET_PACKED;
100 * Network format for IPv6 addresses.
102 struct IPv6HttpAddress
107 struct in6_addr ipv6_addr GNUNET_PACKED;
110 * Port number, in network byte order.
112 uint16_t u6_port GNUNET_PACKED;
118 * Message to send using http
123 * next pointer for double linked list
125 struct HTTP_Message * next;
128 * previous pointer for double linked list
130 struct HTTP_Message * prev;
133 * buffer containing data to send
138 * amount of data already sent
148 * Continuation function to call once the transmission buffer
149 * has again space available. NULL if there is no
150 * continuation to call.
152 GNUNET_TRANSPORT_TransmitContinuation transmit_cont;
155 * Closure for transmit_cont.
157 void *transmit_cont_cls;
161 struct HTTP_PeerContext
166 struct GNUNET_PeerIdentity identity;
169 * Pointer to the global plugin struct.
171 struct Plugin *plugin;
174 * Linked list of connections with this peer
177 struct Session * head;
180 * Linked list of connections with this peer
183 struct Session * tail;
186 * id for next session
188 size_t session_id_counter;
191 * Last session used to send data
193 struct Session * last_session;
202 struct SessionHeader header;
205 * next session in linked list
207 struct Session * next;
210 * previous session in linked list
212 struct Session * prev;
215 * address of this session
230 * Message queue for outbound messages
233 struct HTTP_Message * pending_msgs_head;
236 * Message queue for outbound messages
239 struct HTTP_Message * pending_msgs_tail;
242 * partner peer this connection belongs to
244 struct HTTP_PeerContext * peercontext;
247 * message stream tokenizer for incoming data
249 struct GNUNET_SERVER_MessageStreamTokenizer *msgtok;
253 * outbound: OUTBOUND (GNUNET_YES)
254 * inbound : INBOUND (GNUNET_NO)
256 unsigned int direction;
259 * is session connected to send data?
261 unsigned int send_connected;
264 * is send connection active?
266 unsigned int send_active;
269 * connection disconnect forced (e.g. from transport)
271 unsigned int send_force_disconnect;
274 * is session connected to receive data?
276 unsigned int recv_connected;
279 * is receive connection active?
281 unsigned int recv_active;
284 * connection disconnect forced (e.g. from transport)
286 unsigned int recv_force_disconnect;
289 * id for next session
290 * NOTE: 0 is not an ID, zero is not defined. A correct ID is always > 0
295 * entity managing sending data
296 * outbound session: CURL *
297 * inbound session: mhd_connection *
299 void * send_endpoint;
302 * entity managing recieving data
303 * outbound session: CURL *
304 * inbound session: mhd_connection *
306 void * recv_endpoint;
310 * Encapsulation of all of the state of the plugin.
317 struct GNUNET_TRANSPORT_PluginEnvironment *env;
320 * Handle for reporting statistics.
322 struct GNUNET_STATISTICS_Handle *stats;
327 unsigned int port_inbound;
329 struct GNUNET_CONTAINER_MultiHashMap *peers;
332 * Daemon for listening for new IPv4 connections.
334 struct MHD_Daemon *http_server_daemon_v4;
337 * Daemon for listening for new IPv6connections.
339 struct MHD_Daemon *http_server_daemon_v6;
342 * Our primary task for http daemon handling IPv4 connections
344 GNUNET_SCHEDULER_TaskIdentifier http_server_task_v4;
347 * Our primary task for http daemon handling IPv6 connections
349 GNUNET_SCHEDULER_TaskIdentifier http_server_task_v6;
352 * The task sending data
354 GNUNET_SCHEDULER_TaskIdentifier http_curl_task;
359 CURLM * multi_handle;
362 * Our ASCII encoded, hashed peer identity
363 * This string is used to distinguish between connections and is added to the urls
365 struct GNUNET_CRYPTO_HashAsciiEncoded my_ascii_hash_ident;
368 * IPv4 Address the plugin binds to
370 struct sockaddr_in * bind4_address;
373 * IPv6 Address the plugins binds to
375 struct sockaddr_in6 * bind6_address;
378 * Hostname to bind to
380 char * bind_hostname;
393 * Closure passed by MHD to the mhd_logger function
400 * Function called for a quick conversion of the binary address to
401 * a numeric address. Note that the caller must not free the
402 * address and that the next call to this function is allowed
403 * to override the address again.
406 * @param addr binary address
407 * @param addrlen length of the address
408 * @return string representing the same address
411 http_plugin_address_to_string (void *cls,
417 * Call MHD to process pending ipv4 requests and then go back
418 * and schedule the next run.
420 static void http_server_daemon_v4_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
422 * Call MHD to process pending ipv6 requests and then go back
423 * and schedule the next run.
425 static void http_server_daemon_v6_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
428 * Function setting up curl handle and selecting message to send
430 * @param ses session to send data to
431 * @param con connection
432 * @return bytes sent to peer
434 static ssize_t send_check_connections (void *cls, struct Session *ps);
437 * Function setting up file descriptors and scheduling task to run
439 * @param ses session to send data to
442 static int curl_schedule(void *cls );
446 * Creates a valid url from passed address and id
447 * @param cls plugin as closure
448 * @param addr address to create url from
449 * @param addrlen address lenth
450 * @param id session id
451 * @return the created url
453 static char * create_url(void * cls, const void * addr, size_t addrlen, size_t id)
455 struct Plugin *plugin = cls;
457 char *addr_str = (char *) http_plugin_address_to_string(NULL, addr, addrlen);
459 GNUNET_assert ((addr!=NULL) && (addrlen != 0));
460 GNUNET_asprintf(&url,
461 "%s://%s/%s;%u", PROTOCOL_PREFIX, addr_str,
462 (char *) (&plugin->my_ascii_hash_ident),id);
463 GNUNET_free_non_null(addr_str);
468 * Removes a message from the linked list of messages
471 * @return GNUNET_SYSERR if msg not found, GNUNET_OK on success
473 static int remove_http_message (struct Session * ps, struct HTTP_Message * msg)
475 GNUNET_CONTAINER_DLL_remove(ps->pending_msgs_head,ps->pending_msgs_tail,msg);
481 * Iterator to remove peer context
482 * @param cls the plugin
483 * @key the peers public key hashcode
484 * @value the peer context
485 * @return GNUNET_YES on success
487 int remove_peer_context_Iterator (void *cls, const GNUNET_HashCode *key, void *value)
489 struct Plugin *plugin = cls;
490 struct HTTP_PeerContext * pc = value;
491 struct Session * ps = pc->head;
492 struct Session * tmp = NULL;
493 struct HTTP_Message * msg = NULL;
494 struct HTTP_Message * msg_tmp = NULL;
496 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Freeing context for peer `%s'\n",GNUNET_i2s(&pc->identity));
498 GNUNET_CONTAINER_multihashmap_remove (plugin->peers, &pc->identity.hashPubKey, pc);
501 plugin->env->session_end(plugin, &pc->identity, ps);
504 GNUNET_free_non_null (ps->addr);
505 GNUNET_free(ps->url);
506 if (ps->msgtok != NULL)
507 GNUNET_SERVER_mst_destroy (ps->msgtok);
509 msg = ps->pending_msgs_head;
516 if (ps->direction==OUTBOUND)
518 if (ps->send_endpoint!=NULL)
519 curl_easy_cleanup(ps->send_endpoint);
520 if (ps->recv_endpoint!=NULL)
521 curl_easy_cleanup(ps->recv_endpoint);
528 GNUNET_STATISTICS_update (plugin->env->stats,
529 gettext_noop ("# HTTP peers active"),
537 * Removes a session from the linked list of sessions
538 * @param pc peer context
540 * @param call_msg_cont GNUNET_YES to call pending message continuations, otherwise no
541 * @param call_msg_cont_result result to call message continuations with
542 * @return GNUNET_SYSERR if msg not found, GNUNET_OK on success
544 static int remove_session (struct HTTP_PeerContext * pc, struct Session * ps, int call_msg_cont, int call_msg_cont_result)
546 struct HTTP_Message * msg;
547 struct Plugin * plugin = ps->peercontext->plugin;
549 #if DEBUG_CONNECTIONS
550 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: removing %s session %X with id %u\n", ps, (ps->direction == INBOUND) ? "inbound" : "outbound", ps, ps->session_id);
552 plugin->env->session_end(plugin, &pc->identity, ps);
554 GNUNET_free_non_null (ps->addr);
555 GNUNET_SERVER_mst_destroy (ps->msgtok);
556 GNUNET_free(ps->url);
558 if (ps->direction==INBOUND)
560 if (ps->recv_endpoint != NULL)
562 curl_easy_cleanup(ps->recv_endpoint);
563 ps->recv_endpoint = NULL;
565 if (ps->send_endpoint != NULL)
567 curl_easy_cleanup(ps->send_endpoint);
568 ps->send_endpoint = NULL;
572 msg = ps->pending_msgs_head;
575 if ((call_msg_cont == GNUNET_YES) && (msg->transmit_cont!=NULL))
577 msg->transmit_cont (msg->transmit_cont_cls,&pc->identity,call_msg_cont_result);
579 GNUNET_CONTAINER_DLL_remove(ps->pending_msgs_head,ps->pending_msgs_head,msg);
581 msg = ps->pending_msgs_head;
584 GNUNET_CONTAINER_DLL_remove(pc->head,pc->tail,ps);
588 /* no sessions left remove peer */
592 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"No sessions left for peer `%s', removing context\n",GNUNET_i2s(&pc->identity));
594 remove_peer_context_Iterator(plugin, &pc->identity.hashPubKey, pc);
602 * Add the IP of our network interface to the list of
603 * our external IP addresses.
605 * @param cls the 'struct Plugin*'
606 * @param name name of the interface
607 * @param isDefault do we think this may be our default interface
608 * @param addr address of the interface
609 * @param addrlen number of bytes in addr
610 * @return GNUNET_OK to continue iterating
613 process_interfaces (void *cls,
616 const struct sockaddr *addr, socklen_t addrlen)
618 struct Plugin *plugin = cls;
619 struct IPv4HttpAddress * t4;
620 struct IPv6HttpAddress * t6;
624 GNUNET_assert(cls !=NULL);
625 af = addr->sa_family;
626 if ((af == AF_INET) && (plugin->use_ipv4 == GNUNET_YES) && (plugin->bind6_address == NULL))
628 struct in_addr bnd_cmp = ((struct sockaddr_in *) addr)->sin_addr;
629 t4 = GNUNET_malloc(sizeof(struct IPv4HttpAddress));
630 /* Not skipping loopback addresses
631 if (INADDR_LOOPBACK == ntohl(((struct sockaddr_in *) addr)->sin_addr.s_addr))
637 t4->ipv4_addr = ((struct sockaddr_in *) addr)->sin_addr.s_addr;
638 t4->u_port = htons (plugin->port_inbound);
639 if (plugin->bind4_address != NULL)
641 if (0 == memcmp(&plugin->bind4_address->sin_addr, &bnd_cmp, sizeof (struct in_addr)))
643 plugin->env->notify_address(plugin->env->cls,"http",t4, sizeof (struct IPv4HttpAddress), GNUNET_TIME_UNIT_FOREVER_REL);
648 plugin->env->notify_address(plugin->env->cls,"http",t4, sizeof (struct IPv4HttpAddress), GNUNET_TIME_UNIT_FOREVER_REL);
652 else if ((af == AF_INET6) && (plugin->use_ipv6 == GNUNET_YES) && (plugin->bind4_address == NULL))
654 struct in6_addr bnd_cmp6 = ((struct sockaddr_in6 *) addr)->sin6_addr;
655 if (IN6_IS_ADDR_LINKLOCAL (&((struct sockaddr_in6 *) addr)->sin6_addr))
659 t6 = GNUNET_malloc(sizeof(struct IPv6HttpAddress));
660 GNUNET_assert(t6 != NULL);
661 if (plugin->bind6_address != NULL)
663 if (0 == memcmp(&plugin->bind6_address->sin6_addr, &bnd_cmp6, sizeof (struct in6_addr)))
665 memcpy (&t6->ipv6_addr,
666 &((struct sockaddr_in6 *) addr)->sin6_addr,
667 sizeof (struct in6_addr));
668 t6->u6_port = htons (plugin->port_inbound);
669 plugin->env->notify_address(plugin->env->cls,"http",t6,sizeof (struct IPv6HttpAddress) , GNUNET_TIME_UNIT_FOREVER_REL);
674 memcpy (&t6->ipv6_addr,
675 &((struct sockaddr_in6 *) addr)->sin6_addr,
676 sizeof (struct in6_addr));
677 t6->u6_port = htons (plugin->port_inbound);
678 plugin->env->notify_address(plugin->env->cls,"http",t6,sizeof (struct IPv6HttpAddress) , GNUNET_TIME_UNIT_FOREVER_REL);
687 * External logging function for MHD
688 * @param arg arguments
689 * @param fmt format string
690 * @param ap list of arguments
692 void mhd_logger (void * arg, const char * fmt, va_list ap)
695 vsnprintf(text, 1024, fmt, ap);
697 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,"MHD: %s \n", text);
701 * Callback called by MHD when a connection is terminated
703 * @param connection the terminated connection
704 * @httpSessionCache the mhd session reference
706 static void mhd_termination_cb (void *cls, struct MHD_Connection * connection, void **httpSessionCache)
708 struct Session * ps = *httpSessionCache;
711 struct HTTP_PeerContext * pc = ps->peercontext;
713 if (connection==ps->recv_endpoint)
715 #if DEBUG_CONNECTIONS
716 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: inbound connection from peer `%s' was terminated\n", ps, GNUNET_i2s(&pc->identity));
718 ps->recv_active = GNUNET_NO;
719 ps->recv_connected = GNUNET_NO;
720 ps->recv_endpoint = NULL;
722 if (connection==ps->send_endpoint)
725 ps->send_active = GNUNET_NO;
726 ps->send_connected = GNUNET_NO;
727 ps->send_endpoint = NULL;
728 #if DEBUG_CONNECTIONS
729 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: outbound connection from peer `%s' was terminated\n", ps, GNUNET_i2s(&pc->identity));
733 /* if both connections disconnected, remove session */
734 if ((ps->send_connected == GNUNET_NO) && (ps->recv_connected == GNUNET_NO))
736 GNUNET_STATISTICS_update (pc->plugin->env->stats,
737 gettext_noop ("# HTTP inbound sessions for peers active"),
740 remove_session(pc,ps,GNUNET_YES,GNUNET_SYSERR);
745 * Callback called by MessageStreamTokenizer when a message has arrived
746 * @param cls current session as closure
747 * @param client clien
748 * @param message the message to be forwarded to transport service
751 static void mhd_write_mst_cb (void *cls,
753 const struct GNUNET_MessageHeader *message)
756 struct Session *ps = cls;
757 GNUNET_assert(ps != NULL);
759 struct HTTP_PeerContext *pc = ps->peercontext;
760 GNUNET_assert(pc != NULL);
762 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
763 "Connection %X: Forwarding message to transport service, type %u and size %u from `%s' (`%s')\n",
765 ntohs(message->type),
766 ntohs(message->size),
767 GNUNET_i2s(&(ps->peercontext)->identity),http_plugin_address_to_string(NULL,ps->addr,ps->addrlen));
769 pc->plugin->env->receive (ps->peercontext->plugin->env->cls,
777 * Check if incoming connection is accepted.
778 * NOTE: Here every connection is accepted
779 * @param cls plugin as closure
780 * @param addr address of incoming connection
781 * @param addr_len address length of incoming connection
782 * @return MHD_YES if connection is accepted, MHD_NO if connection is rejected
786 mhd_accept_cb (void *cls,
787 const struct sockaddr *addr, socklen_t addr_len)
790 struct Plugin *plugin = cls;
792 /* Every connection is accepted, nothing more to do here */
798 * Callback called by MHD when it needs data to send
799 * @param cls current session
800 * @param pos position in buffer
801 * @param buf the buffer to write data to
802 * @param max max number of bytes available in buffer
803 * @return bytes written to buffer
805 int mhd_send_callback (void *cls, uint64_t pos, char *buf, int max)
808 struct Session * ps = cls;
809 struct HTTP_PeerContext * pc;
810 struct HTTP_Message * msg;
811 GNUNET_assert (ps!=NULL);
812 pc = ps->peercontext;
813 msg = ps->pending_msgs_tail;
814 if (ps->send_force_disconnect==GNUNET_YES)
816 #if DEBUG_CONNECTIONS
817 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: outbound forced to disconnect\n",ps);
824 if ((msg->size-msg->pos) <= max)
826 memcpy(buf,&msg->buf[msg->pos],(msg->size-msg->pos));
827 bytes_read = msg->size-msg->pos;
828 msg->pos+=(msg->size-msg->pos);
832 memcpy(buf,&msg->buf[msg->pos],max);
837 if (msg->pos==msg->size)
839 if (NULL!=msg->transmit_cont)
840 msg->transmit_cont (msg->transmit_cont_cls,&pc->identity,GNUNET_OK);
841 remove_http_message(ps,msg);
848 * Process GET or PUT request received via MHD. For
849 * GET, queue response that will send back our pending
850 * messages. For PUT, process incoming data and send
851 * to GNUnet core. In either case, check if a session
852 * already exists and create a new one if not.
855 mdh_access_cb (void *cls,
856 struct MHD_Connection *mhd_connection,
860 const char *upload_data,
861 size_t * upload_data_size, void **httpSessionCache)
863 struct Plugin *plugin = cls;
864 struct MHD_Response *response;
865 const union MHD_ConnectionInfo * conn_info;
867 struct sockaddr_in *addrin;
868 struct sockaddr_in6 *addrin6;
870 char address[INET6_ADDRSTRLEN+14];
871 struct GNUNET_PeerIdentity pi_in;
874 struct IPv4HttpAddress ipv4addr;
875 struct IPv6HttpAddress ipv6addr;
877 struct HTTP_PeerContext *pc;
878 struct Session *ps = NULL;
879 struct Session *ps_tmp = NULL;
882 int send_error_to_client;
884 size_t addr_len = 0 ;
886 GNUNET_assert(cls !=NULL);
887 send_error_to_client = GNUNET_NO;
889 if (NULL == *httpSessionCache)
891 /* check url for peer identity , if invalid send HTTP 404*/
892 size_t len = strlen(&url[1]);
893 char * peer = GNUNET_malloc(104+1);
895 if ((len>104) && (url[104]==';'))
897 char * id = GNUNET_malloc((len-104)+1);
898 strcpy(id,&url[105]);
899 memcpy(peer,&url[1],103);
901 id_num = strtoul ( id, NULL , 10);
904 res = GNUNET_CRYPTO_hash_from_string (peer, &(pi_in.hashPubKey));
906 if ( GNUNET_SYSERR == res )
908 response = MHD_create_response_from_data (strlen (HTTP_ERROR_RESPONSE),HTTP_ERROR_RESPONSE, MHD_NO, MHD_NO);
909 res = MHD_queue_response (mhd_connection, MHD_HTTP_NOT_FOUND, response);
910 MHD_destroy_response (response);
911 #if DEBUG_CONNECTIONS
913 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Peer has no valid ident, sent HTTP 1.1/404\n");
915 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Peer has no valid ident, could not send error\n");
922 ps = *httpSessionCache;
923 pc = ps->peercontext;
926 if (NULL == *httpSessionCache)
928 /* get peer context */
929 pc = GNUNET_CONTAINER_multihashmap_get (plugin->peers, &pi_in.hashPubKey);
933 pc = GNUNET_malloc(sizeof (struct HTTP_PeerContext));
935 pc->session_id_counter=1;
936 pc->last_session = NULL;
937 memcpy(&pc->identity, &pi_in, sizeof(struct GNUNET_PeerIdentity));
938 GNUNET_CONTAINER_multihashmap_put(plugin->peers, &pc->identity.hashPubKey, pc, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
939 GNUNET_STATISTICS_update (plugin->env->stats,
940 gettext_noop ("# HTTP peers active"),
945 conn_info = MHD_get_connection_info(mhd_connection, MHD_CONNECTION_INFO_CLIENT_ADDRESS );
946 /* Incoming IPv4 connection */
947 if ( AF_INET == conn_info->client_addr->sin_family)
949 addrin = conn_info->client_addr;
950 inet_ntop(addrin->sin_family, &(addrin->sin_addr),address,INET_ADDRSTRLEN);
951 memcpy(&ipv4addr.ipv4_addr,&(addrin->sin_addr),sizeof(struct in_addr));
952 ipv4addr.u_port = addrin->sin_port;
954 addr_len = sizeof(struct IPv4HttpAddress);
956 /* Incoming IPv6 connection */
957 if ( AF_INET6 == conn_info->client_addr->sin_family)
959 addrin6 = (struct sockaddr_in6 *) conn_info->client_addr;
960 inet_ntop(addrin6->sin6_family, &(addrin6->sin6_addr),address,INET6_ADDRSTRLEN);
961 memcpy(&ipv6addr.ipv6_addr,&(addrin6->sin6_addr),sizeof(struct in6_addr));
962 ipv6addr.u6_port = addrin6->sin6_port;
964 addr_len = sizeof(struct IPv6HttpAddress);
967 GNUNET_assert (addr != NULL);
968 GNUNET_assert (addr_len != 0);
971 /* only inbound sessions here */
976 if ((ps_tmp->direction==INBOUND) && (ps_tmp->session_id == id_num) && (id_num!=0))
978 if ((ps_tmp->recv_force_disconnect!=GNUNET_YES) && (ps_tmp->send_force_disconnect!=GNUNET_YES))
987 ps = GNUNET_malloc(sizeof (struct Session));
988 ps->addr = GNUNET_malloc(addr_len);
989 memcpy(ps->addr,addr,addr_len);
990 ps->addrlen = addr_len;
991 ps->direction=INBOUND;
992 ps->pending_msgs_head = NULL;
993 ps->pending_msgs_tail = NULL;
994 ps->send_connected=GNUNET_NO;
995 ps->send_active=GNUNET_NO;
996 ps->recv_connected=GNUNET_NO;
997 ps->recv_active=GNUNET_NO;
999 ps->session_id =id_num;
1000 ps->url = create_url (plugin, ps->addr, ps->addrlen, ps->session_id);
1001 GNUNET_CONTAINER_DLL_insert(pc->head,pc->tail,ps);
1002 GNUNET_STATISTICS_update (plugin->env->stats,
1003 gettext_noop ("# HTTP inbound sessions for peers active"),
1008 *httpSessionCache = ps;
1009 if (ps->msgtok==NULL)
1010 ps->msgtok = GNUNET_SERVER_mst_create (&mhd_write_mst_cb, ps);
1012 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: HTTP Daemon has new an incoming `%s' request from peer `%s' (`%s')\n",
1015 GNUNET_i2s(&pc->identity),
1016 http_plugin_address_to_string(NULL, ps->addr, ps->addrlen));
1020 /* Is it a PUT or a GET request */
1021 if (0 == strcmp (MHD_HTTP_METHOD_PUT, method))
1023 if (ps->recv_force_disconnect == GNUNET_YES)
1025 #if DEBUG_CONNECTIONS
1026 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: inbound connection was forced to disconnect\n",ps);
1028 ps->recv_active = GNUNET_NO;
1031 if ((*upload_data_size == 0) && (ps->recv_active==GNUNET_NO))
1033 ps->recv_endpoint = mhd_connection;
1034 ps->recv_connected = GNUNET_YES;
1035 ps->recv_active = GNUNET_YES;
1036 ps->recv_force_disconnect = GNUNET_NO;
1037 #if DEBUG_CONNECTIONS
1038 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: inbound PUT connection connected\n",ps);
1043 /* Transmission of all data complete */
1044 if ((*upload_data_size == 0) && (ps->recv_active == GNUNET_YES))
1046 response = MHD_create_response_from_data (strlen (HTTP_PUT_RESPONSE),HTTP_PUT_RESPONSE, MHD_NO, MHD_NO);
1047 res = MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
1048 #if DEBUG_CONNECTIONS
1049 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: Sent HTTP/1.1: 200 OK as PUT Response\n",ps);
1051 MHD_destroy_response (response);
1052 ps->recv_active=GNUNET_NO;
1056 /* Recieving data */
1057 if ((*upload_data_size > 0) && (ps->recv_active == GNUNET_YES))
1059 res = GNUNET_SERVER_mst_receive(ps->msgtok, ps, upload_data,*upload_data_size, GNUNET_NO, GNUNET_NO);
1060 (*upload_data_size) = 0;
1066 if ( 0 == strcmp (MHD_HTTP_METHOD_GET, method) )
1068 if (ps->send_force_disconnect == GNUNET_YES)
1070 #if DEBUG_CONNECTIONS
1071 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: outbound connection was forced to disconnect\n",ps);
1073 ps->send_active = GNUNET_NO;
1076 ps->send_connected = GNUNET_YES;
1077 ps->send_active = GNUNET_YES;
1078 ps->send_endpoint = mhd_connection;
1079 ps->send_force_disconnect = GNUNET_NO;
1080 #if DEBUG_CONNECTIONS
1081 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: inbound GET connection connected\n",ps);
1083 response = MHD_create_response_from_callback(-1,32 * 1024, &mhd_send_callback, ps, NULL);
1084 res = MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
1085 MHD_destroy_response (response);
1092 * Function that queries MHD's select sets and
1093 * starts the task waiting for them.
1094 * @param cls plugin as closure
1095 * @param daemon_handle the MHD daemon handle
1096 * @return gnunet task identifier
1098 static GNUNET_SCHEDULER_TaskIdentifier
1099 http_server_daemon_prepare (void * cls, struct MHD_Daemon *daemon_handle)
1101 struct Plugin *plugin = cls;
1102 GNUNET_SCHEDULER_TaskIdentifier ret;
1106 struct GNUNET_NETWORK_FDSet *wrs;
1107 struct GNUNET_NETWORK_FDSet *wws;
1108 struct GNUNET_NETWORK_FDSet *wes;
1110 unsigned long long timeout;
1112 struct GNUNET_TIME_Relative tv;
1114 GNUNET_assert(cls !=NULL);
1115 ret = GNUNET_SCHEDULER_NO_TASK;
1119 wrs = GNUNET_NETWORK_fdset_create ();
1120 wes = GNUNET_NETWORK_fdset_create ();
1121 wws = GNUNET_NETWORK_fdset_create ();
1123 GNUNET_assert (MHD_YES ==
1124 MHD_get_fdset (daemon_handle,
1129 haveto = MHD_get_timeout (daemon_handle, &timeout);
1130 if (haveto == MHD_YES)
1131 tv.value = (uint64_t) timeout;
1133 tv = GNUNET_TIME_UNIT_FOREVER_REL;
1134 GNUNET_NETWORK_fdset_copy_native (wrs, &rs, max);
1135 GNUNET_NETWORK_fdset_copy_native (wws, &ws, max);
1136 GNUNET_NETWORK_fdset_copy_native (wes, &es, max);
1137 if (daemon_handle == plugin->http_server_daemon_v4)
1139 if (plugin->http_server_task_v4 != GNUNET_SCHEDULER_NO_TASK)
1141 GNUNET_SCHEDULER_cancel(plugin->env->sched, plugin->http_server_task_v4);
1142 plugin->http_server_daemon_v4 = GNUNET_SCHEDULER_NO_TASK;
1145 ret = GNUNET_SCHEDULER_add_select (plugin->env->sched,
1146 GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1147 GNUNET_SCHEDULER_NO_TASK,
1151 &http_server_daemon_v4_run,
1154 if (daemon_handle == plugin->http_server_daemon_v6)
1156 if (plugin->http_server_task_v6 != GNUNET_SCHEDULER_NO_TASK)
1158 GNUNET_SCHEDULER_cancel(plugin->env->sched, plugin->http_server_task_v6);
1159 plugin->http_server_task_v6 = GNUNET_SCHEDULER_NO_TASK;
1162 ret = GNUNET_SCHEDULER_add_select (plugin->env->sched,
1163 GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1164 GNUNET_SCHEDULER_NO_TASK,
1168 &http_server_daemon_v6_run,
1171 GNUNET_NETWORK_fdset_destroy (wrs);
1172 GNUNET_NETWORK_fdset_destroy (wws);
1173 GNUNET_NETWORK_fdset_destroy (wes);
1178 * Call MHD IPv4 to process pending requests and then go back
1179 * and schedule the next run.
1180 * @param cls plugin as closure
1181 * @param tc task context
1183 static void http_server_daemon_v4_run (void *cls,
1184 const struct GNUNET_SCHEDULER_TaskContext *tc)
1186 struct Plugin *plugin = cls;
1188 GNUNET_assert(cls !=NULL);
1189 plugin->http_server_task_v4 = GNUNET_SCHEDULER_NO_TASK;
1191 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
1194 GNUNET_assert (MHD_YES == MHD_run (plugin->http_server_daemon_v4));
1195 plugin->http_server_task_v4 = http_server_daemon_prepare (plugin, plugin->http_server_daemon_v4);
1201 * Call MHD IPv6 to process pending requests and then go back
1202 * and schedule the next run.
1203 * @param cls plugin as closure
1204 * @param tc task context
1206 static void http_server_daemon_v6_run (void *cls,
1207 const struct GNUNET_SCHEDULER_TaskContext *tc)
1209 struct Plugin *plugin = cls;
1211 GNUNET_assert(cls !=NULL);
1212 plugin->http_server_task_v6 = GNUNET_SCHEDULER_NO_TASK;
1214 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
1217 GNUNET_assert (MHD_YES == MHD_run (plugin->http_server_daemon_v6));
1218 plugin->http_server_task_v6 = http_server_daemon_prepare (plugin, plugin->http_server_daemon_v6);
1222 static size_t curl_get_header_cb( void *ptr, size_t size, size_t nmemb, void *stream)
1224 struct Session * ps = stream;
1226 long http_result = 0;
1228 /* Getting last http result code */
1229 GNUNET_assert(NULL!=ps);
1230 if (ps->recv_connected==GNUNET_NO)
1232 res = curl_easy_getinfo(ps->recv_endpoint, CURLINFO_RESPONSE_CODE, &http_result);
1233 if (CURLE_OK == res)
1235 if (http_result == 200)
1237 ps->recv_connected = GNUNET_YES;
1238 ps->recv_active = GNUNET_YES;
1239 #if DEBUG_CONNECTIONS
1240 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: connected to recieve data\n",ps);
1242 // Calling send_check_connections again since receive is established
1243 send_check_connections (ps->peercontext->plugin, ps);
1250 size_t len = size * nmemb;
1252 if ((size * nmemb) < SIZE_MAX)
1253 tmp = GNUNET_malloc (len+1);
1255 if ((tmp != NULL) && (len > 0))
1257 memcpy(tmp,ptr,len);
1260 if (tmp[len-2] == 13)
1263 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: Header: %s\n",ps,tmp);
1269 return size * nmemb;
1272 static size_t curl_put_header_cb( void *ptr, size_t size, size_t nmemb, void *stream)
1274 struct Session * ps = stream;
1277 size_t len = size * nmemb;
1278 long http_result = 0;
1281 /* Getting last http result code */
1282 GNUNET_assert(NULL!=ps);
1283 res = curl_easy_getinfo(ps->send_endpoint, CURLINFO_RESPONSE_CODE, &http_result);
1284 if (CURLE_OK == res)
1286 if ((http_result == 100) && (ps->send_connected==GNUNET_NO))
1288 ps->send_connected = GNUNET_YES;
1289 ps->send_active = GNUNET_YES;
1290 #if DEBUG_CONNECTIONS
1291 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: connected to send data\n",ps);
1294 if ((http_result == 200) && (ps->send_connected==GNUNET_YES))
1296 ps->send_connected = GNUNET_NO;
1297 ps->send_active = GNUNET_NO;
1298 #if DEBUG_CONNECTIONS
1299 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: sending disconnected\n",ps);
1305 if ((size * nmemb) < SIZE_MAX)
1306 tmp = GNUNET_malloc (len+1);
1308 if ((tmp != NULL) && (len > 0))
1310 memcpy(tmp,ptr,len);
1313 if (tmp[len-2] == 13)
1320 return size * nmemb;
1324 * Callback method used with libcurl
1325 * Method is called when libcurl needs to read data during sending
1326 * @param stream pointer where to write data
1327 * @param size size of an individual element
1328 * @param nmemb count of elements that can be written to the buffer
1329 * @param ptr source pointer, passed to the libcurl handle
1330 * @return bytes written to stream
1332 static size_t curl_send_cb(void *stream, size_t size, size_t nmemb, void *ptr)
1334 struct Session * ps = ptr;
1335 struct HTTP_Message * msg = ps->pending_msgs_tail;
1339 if (ps->send_active == GNUNET_NO)
1340 return CURL_READFUNC_PAUSE;
1342 if ((ps->pending_msgs_tail == NULL) && (ps->send_active == GNUNET_YES))
1344 #if DEBUG_CONNECTIONS
1345 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: No Message to send, pausing connection\n",ps);
1347 ps->send_active = GNUNET_NO;
1348 return CURL_READFUNC_PAUSE;
1351 GNUNET_assert (msg!=NULL);
1354 if (msg->pos < msg->size)
1356 /* data fit in buffer */
1357 if ((msg->size - msg->pos) <= (size * nmemb))
1359 len = (msg->size - msg->pos);
1360 memcpy(stream, &msg->buf[msg->pos], len);
1367 memcpy(stream, &msg->buf[msg->pos], len);
1372 /* no data to send */
1378 if ( msg->pos == msg->size)
1380 #if DEBUG_CONNECTIONS
1381 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: Message with %u bytes sent, removing message from queue \n",ps, msg->pos);
1383 /* Calling transmit continuation */
1384 if (NULL != ps->pending_msgs_tail->transmit_cont)
1385 msg->transmit_cont (ps->pending_msgs_tail->transmit_cont_cls,&(ps->peercontext)->identity,GNUNET_OK);
1386 remove_http_message(ps, msg);
1391 static void curl_receive_mst_cb (void *cls,
1393 const struct GNUNET_MessageHeader *message)
1395 struct Session *ps = cls;
1396 GNUNET_assert(ps != NULL);
1398 struct HTTP_PeerContext *pc = ps->peercontext;
1399 GNUNET_assert(pc != NULL);
1401 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1402 "Connection %X: Forwarding message to transport service, type %u and size %u from `%s' (`%s')\n",
1404 ntohs(message->type),
1405 ntohs(message->size),
1406 GNUNET_i2s(&(pc->identity)),http_plugin_address_to_string(NULL,ps->addr,ps->addrlen));
1408 pc->plugin->env->receive (pc->plugin->env->cls,
1417 * Callback method used with libcurl
1418 * Method is called when libcurl needs to write data during sending
1419 * @param stream pointer where to write data
1420 * @param size size of an individual element
1421 * @param nmemb count of elements that can be written to the buffer
1422 * @param ptr destination pointer, passed to the libcurl handle
1423 * @return bytes read from stream
1425 static size_t curl_receive_cb( void *stream, size_t size, size_t nmemb, void *ptr)
1427 struct Session * ps = ptr;
1428 #if DEBUG_CONNECTIONS
1429 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: %u bytes received\n",ps, size*nmemb);
1431 GNUNET_SERVER_mst_receive(ps->msgtok, ps, stream, size*nmemb, GNUNET_NO, GNUNET_NO);
1432 return (size * nmemb);
1436 static void curl_perform (void *cls,
1437 const struct GNUNET_SCHEDULER_TaskContext *tc)
1439 struct Plugin *plugin = cls;
1440 static unsigned int handles_last_run;
1442 struct CURLMsg *msg;
1444 struct Session *ps = NULL;
1445 struct HTTP_PeerContext *pc = NULL;
1446 struct HTTP_Message * cur_msg = NULL;
1450 GNUNET_assert(cls !=NULL);
1452 plugin->http_curl_task = GNUNET_SCHEDULER_NO_TASK;
1453 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
1459 mret = curl_multi_perform (plugin->multi_handle, &running);
1460 if ((running < handles_last_run) && (running>0))
1465 msg = curl_multi_info_read (plugin->multi_handle, &running);
1468 /* get session for affected curl handle */
1469 GNUNET_assert ( msg->easy_handle != NULL );
1470 curl_easy_getinfo(msg->easy_handle, CURLINFO_PRIVATE, &tmp);
1471 ps = (struct Session *) tmp;
1472 GNUNET_assert ( ps != NULL );
1473 pc = ps->peercontext;
1474 GNUNET_assert ( pc != NULL );
1479 if ( (msg->data.result != CURLE_OK) &&
1480 (msg->data.result != CURLE_GOT_NOTHING) )
1482 /* sending msg failed*/
1483 if (msg->easy_handle == ps->send_endpoint)
1485 #if DEBUG_CONNECTIONS
1486 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
1487 _("Connection %X: HTTP PUT to peer `%s' (`%s') failed: `%s' `%s'\n"),
1489 GNUNET_i2s(&pc->identity),
1490 http_plugin_address_to_string(NULL, ps->addr, ps->addrlen),
1491 "curl_multi_perform",
1492 curl_easy_strerror (msg->data.result));
1494 ps->send_connected = GNUNET_NO;
1495 ps->send_active = GNUNET_NO;
1496 curl_multi_remove_handle(plugin->multi_handle,ps->send_endpoint);
1497 //curl_easy_cleanup(ps->send_endpoint);
1498 //ps->send_endpoint=NULL;
1499 cur_msg = ps->pending_msgs_tail;
1500 if (( NULL != cur_msg) && ( NULL != cur_msg->transmit_cont))
1501 cur_msg->transmit_cont (cur_msg->transmit_cont_cls,&pc->identity,GNUNET_SYSERR);
1503 /* GET connection failed */
1504 if (msg->easy_handle == ps->recv_endpoint)
1506 #if DEBUG_CONNECTIONS
1507 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
1508 _("Connection %X: HTTP GET to peer `%s' (`%s') failed: `%s' `%s'\n"),
1510 GNUNET_i2s(&pc->identity),
1511 http_plugin_address_to_string(NULL, ps->addr, ps->addrlen),
1512 "curl_multi_perform",
1513 curl_easy_strerror (msg->data.result));
1515 ps->recv_connected = GNUNET_NO;
1516 ps->recv_active = GNUNET_NO;
1517 curl_multi_remove_handle(plugin->multi_handle,ps->recv_endpoint);
1518 //curl_easy_cleanup(ps->recv_endpoint);
1519 //ps->recv_endpoint=NULL;
1524 if (msg->easy_handle == ps->send_endpoint)
1526 GNUNET_assert (CURLE_OK == curl_easy_getinfo(msg->easy_handle, CURLINFO_RESPONSE_CODE, &http_result));
1527 #if DEBUG_CONNECTIONS
1528 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1529 "Connection %X: HTTP PUT connection to peer `%s' (`%s') was closed with HTTP code %u\n",
1531 GNUNET_i2s(&pc->identity),
1532 http_plugin_address_to_string(NULL, ps->addr, ps->addrlen),
1535 /* Calling transmit continuation */
1536 cur_msg = ps->pending_msgs_tail;
1537 if (( NULL != cur_msg) && (NULL != cur_msg->transmit_cont))
1539 /* HTTP 1xx : Last message before here was informational */
1540 if ((http_result >=100) && (http_result < 200))
1541 cur_msg->transmit_cont (cur_msg->transmit_cont_cls,&pc->identity,GNUNET_OK);
1542 /* HTTP 2xx: successful operations */
1543 if ((http_result >=200) && (http_result < 300))
1544 cur_msg->transmit_cont (cur_msg->transmit_cont_cls,&pc->identity,GNUNET_OK);
1545 /* HTTP 3xx..5xx: error */
1546 if ((http_result >=300) && (http_result < 600))
1547 cur_msg->transmit_cont (cur_msg->transmit_cont_cls,&pc->identity,GNUNET_SYSERR);
1549 ps->send_connected = GNUNET_NO;
1550 ps->send_active = GNUNET_NO;
1551 curl_multi_remove_handle(plugin->multi_handle,ps->send_endpoint);
1552 //curl_easy_cleanup(ps->send_endpoint);
1553 //ps->send_endpoint =NULL;
1555 if (msg->easy_handle == ps->recv_endpoint)
1557 #if DEBUG_CONNECTIONS
1558 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1559 "Connection %X: HTTP GET connection to peer `%s' (`%s') was closed with HTTP code %u\n",
1561 GNUNET_i2s(&pc->identity),
1562 http_plugin_address_to_string(NULL, ps->addr, ps->addrlen),
1565 ps->recv_connected = GNUNET_NO;
1566 ps->recv_active = GNUNET_NO;
1567 curl_multi_remove_handle(plugin->multi_handle,ps->recv_endpoint);
1568 //curl_easy_cleanup(ps->recv_endpoint);
1569 //ps->recv_endpoint=NULL;
1572 if ((ps->recv_connected == GNUNET_NO) && (ps->send_connected == GNUNET_NO))
1573 remove_session (pc, ps, GNUNET_YES, GNUNET_SYSERR);
1580 while ( (running > 0) );
1582 handles_last_run = running;
1584 while (mret == CURLM_CALL_MULTI_PERFORM);
1585 curl_schedule(plugin);
1590 * Function setting up file descriptors and scheduling task to run
1591 * @param cls plugin as closure
1592 * @return GNUNET_SYSERR for hard failure, GNUNET_OK for ok
1594 static int curl_schedule(void *cls)
1596 struct Plugin *plugin = cls;
1601 struct GNUNET_NETWORK_FDSet *grs;
1602 struct GNUNET_NETWORK_FDSet *gws;
1606 GNUNET_assert(cls !=NULL);
1608 /* Cancel previous scheduled task */
1609 if (plugin->http_curl_task != GNUNET_SCHEDULER_NO_TASK)
1611 GNUNET_SCHEDULER_cancel(plugin->env->sched, plugin->http_curl_task);
1612 plugin->http_curl_task = GNUNET_SCHEDULER_NO_TASK;
1618 mret = curl_multi_fdset (plugin->multi_handle, &rs, &ws, &es, &max);
1619 if (mret != CURLM_OK)
1621 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1622 _("%s failed at %s:%d: `%s'\n"),
1623 "curl_multi_fdset", __FILE__, __LINE__,
1624 curl_multi_strerror (mret));
1625 return GNUNET_SYSERR;
1627 mret = curl_multi_timeout (plugin->multi_handle, &to);
1628 if (mret != CURLM_OK)
1630 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1631 _("%s failed at %s:%d: `%s'\n"),
1632 "curl_multi_timeout", __FILE__, __LINE__,
1633 curl_multi_strerror (mret));
1634 return GNUNET_SYSERR;
1637 grs = GNUNET_NETWORK_fdset_create ();
1638 gws = GNUNET_NETWORK_fdset_create ();
1639 GNUNET_NETWORK_fdset_copy_native (grs, &rs, max + 1);
1640 GNUNET_NETWORK_fdset_copy_native (gws, &ws, max + 1);
1641 plugin->http_curl_task = GNUNET_SCHEDULER_add_select (plugin->env->sched,
1642 GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1643 GNUNET_SCHEDULER_NO_TASK,
1644 GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 0),
1649 GNUNET_NETWORK_fdset_destroy (gws);
1650 GNUNET_NETWORK_fdset_destroy (grs);
1655 * Function setting up curl handle and selecting message to send
1658 * @return GNUNET_SYSERR on failure, GNUNET_NO if connecting, GNUNET_YES if ok
1660 static ssize_t send_check_connections (void *cls, struct Session *ps)
1662 struct Plugin *plugin = cls;
1664 struct HTTP_Message * msg;
1666 struct GNUNET_TIME_Relative timeout = GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT;
1668 GNUNET_assert(cls !=NULL);
1670 if (ps->direction == OUTBOUND)
1672 /* RECV DIRECTION */
1673 /* Check if session is connected to receive data, otherwise connect to peer */
1674 if (ps->recv_connected == GNUNET_NO)
1676 int fresh = GNUNET_NO;
1677 if (ps->recv_endpoint == NULL)
1680 ps->recv_endpoint = curl_easy_init();
1683 curl_easy_setopt(ps->recv_endpoint, CURLOPT_VERBOSE, 1L);
1685 curl_easy_setopt(ps->recv_endpoint, CURLOPT_URL, ps->url);
1686 curl_easy_setopt(ps->recv_endpoint, CURLOPT_HEADERFUNCTION, &curl_get_header_cb);
1687 curl_easy_setopt(ps->recv_endpoint, CURLOPT_WRITEHEADER, ps);
1688 curl_easy_setopt(ps->recv_endpoint, CURLOPT_READFUNCTION, curl_send_cb);
1689 curl_easy_setopt(ps->recv_endpoint, CURLOPT_READDATA, ps);
1690 curl_easy_setopt(ps->recv_endpoint, CURLOPT_WRITEFUNCTION, curl_receive_cb);
1691 curl_easy_setopt(ps->recv_endpoint, CURLOPT_WRITEDATA, ps);
1692 curl_easy_setopt(ps->recv_endpoint, CURLOPT_TIMEOUT, (long) timeout.value);
1693 curl_easy_setopt(ps->recv_endpoint, CURLOPT_PRIVATE, ps);
1694 curl_easy_setopt(ps->recv_endpoint, CURLOPT_CONNECTTIMEOUT, HTTP_CONNECT_TIMEOUT);
1695 curl_easy_setopt(ps->recv_endpoint, CURLOPT_BUFFERSIZE, 2*GNUNET_SERVER_MAX_MESSAGE_SIZE);
1696 #if CURL_TCP_NODELAY
1697 curl_easy_setopt(ps->recv_endpoint, CURLOPT_TCP_NODELAY, 1);
1700 if (fresh==GNUNET_YES)
1702 mret = curl_multi_add_handle(plugin->multi_handle, ps->recv_endpoint);
1703 if (mret != CURLM_OK)
1705 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1706 _("Connection: %X: %s failed at %s:%d: `%s'\n"),
1708 "curl_multi_add_handle", __FILE__, __LINE__,
1709 curl_multi_strerror (mret));
1710 return GNUNET_SYSERR;
1713 if (curl_schedule (plugin) == GNUNET_SYSERR)
1715 #if DEBUG_CONNECTIONS
1716 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: could not schedule curl task\n",ps);
1718 return GNUNET_SYSERR;
1720 #if DEBUG_CONNECTIONS
1721 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: inbound not connected, initiating connection\n",ps);
1725 /* waiting for receive direction */
1726 if (ps->recv_connected==GNUNET_NO)
1729 /* SEND DIRECTION */
1730 /* Check if session is connected to send data, otherwise connect to peer */
1731 if ((ps->send_connected == GNUNET_YES) && (ps->send_endpoint!= NULL))
1733 if (ps->send_active == GNUNET_YES)
1735 #if DEBUG_CONNECTIONS
1736 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: outbound active, enqueueing message\n",ps);
1740 if (ps->send_active == GNUNET_NO)
1742 #if DEBUG_CONNECTIONS
1743 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: outbound paused, unpausing existing connection and enqueueing message\n",ps);
1745 if (CURLE_OK == curl_easy_pause(ps->send_endpoint,CURLPAUSE_CONT))
1747 ps->send_active=GNUNET_YES;
1751 return GNUNET_SYSERR;
1754 /* not connected, initiate connection */
1755 if (ps->send_connected==GNUNET_NO)
1757 int fresh = GNUNET_NO;
1758 if (NULL == ps->send_endpoint)
1760 ps->send_endpoint = curl_easy_init();
1763 GNUNET_assert (ps->send_endpoint != NULL);
1764 GNUNET_assert (NULL != ps->pending_msgs_tail);
1765 #if DEBUG_CONNECTIONS
1766 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: outbound not connected, initiating connection\n",ps);
1768 ps->send_active = GNUNET_NO;
1769 msg = ps->pending_msgs_tail;
1772 curl_easy_setopt(ps->send_endpoint, CURLOPT_VERBOSE, 1L);
1774 curl_easy_setopt(ps->send_endpoint, CURLOPT_URL, ps->url);
1775 curl_easy_setopt(ps->send_endpoint, CURLOPT_PUT, 1L);
1776 curl_easy_setopt(ps->send_endpoint, CURLOPT_HEADERFUNCTION, &curl_put_header_cb);
1777 curl_easy_setopt(ps->send_endpoint, CURLOPT_WRITEHEADER, ps);
1778 curl_easy_setopt(ps->send_endpoint, CURLOPT_READFUNCTION, curl_send_cb);
1779 curl_easy_setopt(ps->send_endpoint, CURLOPT_READDATA, ps);
1780 curl_easy_setopt(ps->send_endpoint, CURLOPT_WRITEFUNCTION, curl_receive_cb);
1781 curl_easy_setopt(ps->send_endpoint, CURLOPT_READDATA, ps);
1782 curl_easy_setopt(ps->send_endpoint, CURLOPT_TIMEOUT, (long) timeout.value);
1783 curl_easy_setopt(ps->send_endpoint, CURLOPT_PRIVATE, ps);
1784 curl_easy_setopt(ps->send_endpoint, CURLOPT_CONNECTTIMEOUT, HTTP_CONNECT_TIMEOUT);
1785 curl_easy_setopt(ps->send_endpoint, CURLOPT_BUFFERSIZE, 2 * GNUNET_SERVER_MAX_MESSAGE_SIZE);
1786 #if CURL_TCP_NODELAY
1787 curl_easy_setopt(ps->send_endpoint, CURLOPT_TCP_NODELAY, 1);
1790 if (fresh==GNUNET_YES)
1792 mret = curl_multi_add_handle(plugin->multi_handle, ps->send_endpoint);
1793 if (mret != CURLM_OK)
1795 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1796 _("Connection: %X: %s failed at %s:%d: `%s'\n"),
1798 "curl_multi_add_handle", __FILE__, __LINE__,
1799 curl_multi_strerror (mret));
1800 return GNUNET_SYSERR;
1804 if (curl_schedule (plugin) == GNUNET_SYSERR)
1805 return GNUNET_SYSERR;
1808 if (ps->direction == INBOUND)
1810 GNUNET_assert (NULL != ps->pending_msgs_tail);
1811 if ((ps->recv_connected==GNUNET_YES) && (ps->send_connected==GNUNET_YES) &&
1812 (ps->recv_force_disconnect==GNUNET_NO) && (ps->recv_force_disconnect==GNUNET_NO))
1815 return GNUNET_SYSERR;
1818 static struct Session * send_select_session (void * cls, struct HTTP_PeerContext *pc, const void * addr, size_t addrlen, int force_address, struct Session * session)
1820 struct Session * tmp = NULL;
1821 int addr_given = GNUNET_NO;
1823 if ((addr!=NULL) && (addrlen>0))
1824 addr_given = GNUNET_YES;
1826 if (force_address == GNUNET_YES)
1828 /* check session given as argument */
1829 if ((session != NULL) && (addr_given == GNUNET_YES))
1831 if (0 == memcmp(session->addr, addr, addrlen))
1833 /* connection can not be used, since it is disconnected */
1834 if ((session->recv_force_disconnect==GNUNET_NO) && (session->send_force_disconnect==GNUNET_NO))
1836 #if DEBUG_SESSION_SELECTION
1837 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Session %X selected: Using session passed by transport to send to forced address \n", session);
1843 /* check last session used */
1844 if ((pc->last_session != NULL)&& (addr_given == GNUNET_YES))
1846 if (0 == memcmp(pc->last_session->addr, addr, addrlen))
1848 /* connection can not be used, since it is disconnected */
1849 if ((pc->last_session->recv_force_disconnect==GNUNET_NO) && (pc->last_session->send_force_disconnect==GNUNET_NO))
1851 #if DEBUG_SESSION_SELECTION
1852 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Session %X selected: Using last session used to send to forced address \n", pc->last_session);
1854 return pc->last_session;
1858 /* find session in existing sessions */
1860 while ((tmp!=NULL) && (addr_given == GNUNET_YES))
1863 if (0 == memcmp(tmp->addr, addr, addrlen))
1865 /* connection can not be used, since it is disconnected */
1866 if ((tmp->recv_force_disconnect==GNUNET_NO) && (tmp->send_force_disconnect==GNUNET_NO))
1868 #if DEBUG_SESSION_SELECTION
1869 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Session %X selected: Using existing session to send to forced address \n", session);
1877 /* no session to use */
1880 if ((force_address == GNUNET_NO) || (force_address == GNUNET_SYSERR))
1882 /* check session given as argument */
1883 if (session != NULL)
1885 /* connection can not be used, since it is disconnected */
1886 if ((session->recv_force_disconnect==GNUNET_NO) && (session->send_force_disconnect==GNUNET_NO))
1888 #if DEBUG_SESSION_SELECTION
1889 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Session %X selected: Using session passed by transport to send not-forced address \n", session);
1895 /* check last session used */
1896 if (pc->last_session != NULL)
1898 /* connection can not be used, since it is disconnected */
1899 if ((pc->last_session->recv_force_disconnect==GNUNET_NO) && (pc->last_session->send_force_disconnect==GNUNET_NO))
1901 #if DEBUG_SESSION_SELECTION
1902 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Session %X selected: Using last session to send to not-forced address \n", pc->last_session);
1904 return pc->last_session;
1907 /* find session in existing sessions */
1911 /* connection can not be used, since it is disconnected */
1912 if ((tmp->recv_force_disconnect==GNUNET_NO) && (tmp->send_force_disconnect==GNUNET_NO))
1914 #if DEBUG_SESSION_SELECTION
1915 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Session %X selected: Using existing session to send to not-forced address \n", tmp);
1927 * Function that can be used by the transport service to transmit
1928 * a message using the plugin. Note that in the case of a
1929 * peer disconnecting, the continuation MUST be called
1930 * prior to the disconnect notification itself. This function
1931 * will be called with this peer's HELLO message to initiate
1932 * a fresh connection to another peer.
1934 * @param cls closure
1935 * @param target who should receive this message
1936 * @param msgbuf the message to transmit
1937 * @param msgbuf_size number of bytes in 'msgbuf'
1938 * @param priority how important is the message (most plugins will
1939 * ignore message priority and just FIFO)
1940 * @param to how long to wait at most for the transmission (does not
1941 * require plugins to discard the message after the timeout,
1942 * just advisory for the desired delay; most plugins will ignore
1944 * @param session which session must be used (or NULL for "any")
1945 * @param addr the address to use (can be NULL if the plugin
1946 * is "on its own" (i.e. re-use existing TCP connection))
1947 * @param addrlen length of the address in bytes
1948 * @param force_address GNUNET_YES if the plugin MUST use the given address,
1949 * GNUNET_NO means the plugin may use any other address and
1950 * GNUNET_SYSERR means that only reliable existing
1951 * bi-directional connections should be used (regardless
1953 * @param cont continuation to call once the message has
1954 * been transmitted (or if the transport is ready
1955 * for the next transmission call; or if the
1956 * peer disconnected...); can be NULL
1957 * @param cont_cls closure for cont
1958 * @return number of bytes used (on the physical network, with overheads);
1959 * -1 on hard errors (i.e. address invalid); 0 is a legal value
1960 * and does NOT mean that the message was not transmitted (DV)
1963 http_plugin_send (void *cls,
1964 const struct GNUNET_PeerIdentity *target,
1967 unsigned int priority,
1968 struct GNUNET_TIME_Relative to,
1969 struct Session *session,
1973 GNUNET_TRANSPORT_TransmitContinuation cont,
1976 struct Plugin *plugin = cls;
1977 struct HTTP_Message *msg;
1978 struct HTTP_PeerContext * pc;
1979 struct Session * ps = NULL;
1981 GNUNET_assert(cls !=NULL);
1984 char * force = GNUNET_malloc(40);
1985 if (force_address == GNUNET_YES)
1986 strcpy(force,"forced addr.");
1987 if (force_address == GNUNET_NO)
1988 strcpy(force,"any addr.");
1989 if (force_address == GNUNET_SYSERR)
1990 strcpy(force,"reliable bi-direc. address addr.");
1992 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Transport tells me to send %u bytes to `%s' using %s (%s) and session: %X\n",
1996 http_plugin_address_to_string(NULL, addr, addrlen),
2002 pc = GNUNET_CONTAINER_multihashmap_get (plugin->peers, &target->hashPubKey);
2006 pc = GNUNET_malloc(sizeof (struct HTTP_PeerContext));
2007 pc->plugin = plugin;
2008 pc->session_id_counter=1;
2009 pc->last_session = NULL;
2010 memcpy(&pc->identity, target, sizeof(struct GNUNET_PeerIdentity));
2011 GNUNET_CONTAINER_multihashmap_put(plugin->peers, &pc->identity.hashPubKey, pc, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
2012 GNUNET_STATISTICS_update (plugin->env->stats,
2013 gettext_noop ("# HTTP peers active"),
2018 ps = send_select_session (plugin, pc, addr, addrlen, force_address, session);
2020 /* session not existing, but address forced -> creating new session */
2023 if ((addr!=NULL) && (addrlen!=0))
2025 ps = GNUNET_malloc(sizeof (struct Session));
2026 #if DEBUG_SESSION_SELECTION
2027 if (force_address == GNUNET_YES)
2028 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"No existing connection & forced address: creating new session %X to peer %s\n", ps, GNUNET_i2s(target));
2029 if (force_address != GNUNET_YES)
2030 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"No existing connection: creating new session %X to peer %s\n", ps, GNUNET_i2s(target));
2032 if ((addrlen!=0) && (addr!=NULL))
2034 ps->addr = GNUNET_malloc(addrlen);
2035 memcpy(ps->addr,addr,addrlen);
2036 ps->addrlen = addrlen;
2043 ps->direction=OUTBOUND;
2044 ps->recv_connected = GNUNET_NO;
2045 ps->recv_force_disconnect = GNUNET_NO;
2046 ps->send_connected = GNUNET_NO;
2047 ps->send_force_disconnect = GNUNET_NO;
2048 ps->pending_msgs_head = NULL;
2049 ps->pending_msgs_tail = NULL;
2051 ps->session_id = pc->session_id_counter;
2052 pc->session_id_counter++;
2053 ps->url = create_url (plugin, ps->addr, ps->addrlen, ps->session_id);
2054 if (ps->msgtok == NULL)
2055 ps->msgtok = GNUNET_SERVER_mst_create (&curl_receive_mst_cb, ps);
2056 GNUNET_CONTAINER_DLL_insert(pc->head,pc->tail,ps);
2059 GNUNET_STATISTICS_update (plugin->env->stats,
2060 gettext_noop ("# HTTP outbound sessions for peers active"),
2067 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"No existing session found & and no address given: no way to send this message to peer `%s'!\n", GNUNET_i2s(target));
2069 return GNUNET_SYSERR;
2074 msg = GNUNET_malloc (sizeof (struct HTTP_Message) + msgbuf_size);
2076 msg->size = msgbuf_size;
2078 msg->buf = (char *) &msg[1];
2079 msg->transmit_cont = cont;
2080 msg->transmit_cont_cls = cont_cls;
2081 memcpy (msg->buf,msgbuf, msgbuf_size);
2082 GNUNET_CONTAINER_DLL_insert(ps->pending_msgs_head,ps->pending_msgs_tail,msg);
2084 if (send_check_connections (plugin, ps) != GNUNET_SYSERR)
2086 if (force_address != GNUNET_YES)
2087 pc->last_session = ps;
2089 if (pc->last_session==NULL)
2090 pc->last_session = ps;
2094 return GNUNET_SYSERR;
2100 * Function that can be used to force the plugin to disconnect
2101 * from the given peer and cancel all previous transmissions
2102 * (and their continuationc).
2104 * @param cls closure
2105 * @param target peer from which to disconnect
2108 http_plugin_disconnect (void *cls,
2109 const struct GNUNET_PeerIdentity *target)
2113 struct Plugin *plugin = cls;
2114 struct HTTP_PeerContext *pc = NULL;
2115 struct Session *ps = NULL;
2116 //struct Session *tmp = NULL;
2118 pc = GNUNET_CONTAINER_multihashmap_get (plugin->peers, &target->hashPubKey);
2125 /* Telling transport that session is getting disconnected */
2126 plugin->env->session_end(plugin, target, ps);
2127 if (ps->direction==OUTBOUND)
2129 if (ps->send_endpoint!=NULL)
2131 //GNUNET_assert(CURLM_OK == curl_multi_remove_handle(plugin->multi_handle,ps->send_endpoint));
2132 //curl_easy_cleanup(ps->send_endpoint);
2133 //ps->send_endpoint=NULL;
2134 ps->send_force_disconnect = GNUNET_YES;
2136 if (ps->recv_endpoint!=NULL)
2138 //GNUNET_assert(CURLM_OK == curl_multi_remove_handle(plugin->multi_handle,ps->recv_endpoint));
2139 //curl_easy_cleanup(ps->recv_endpoint);
2140 //ps->recv_endpoint=NULL;
2141 ps->recv_force_disconnect = GNUNET_YES;
2145 if (ps->direction==INBOUND)
2147 ps->recv_force_disconnect = GNUNET_YES;
2148 ps->send_force_disconnect = GNUNET_YES;
2151 while (ps->pending_msgs_head!=NULL)
2153 remove_http_message(ps, ps->pending_msgs_head);
2155 ps->recv_active = GNUNET_NO;
2156 ps->send_active = GNUNET_NO;
2163 * Convert the transports address to a nice, human-readable
2166 * @param cls closure
2167 * @param type name of the transport that generated the address
2168 * @param addr one of the addresses of the host, NULL for the last address
2169 * the specific address format depends on the transport
2170 * @param addrlen length of the address
2171 * @param numeric should (IP) addresses be displayed in numeric form?
2172 * @param timeout after how long should we give up?
2173 * @param asc function to call on each string
2174 * @param asc_cls closure for asc
2177 http_plugin_address_pretty_printer (void *cls,
2182 struct GNUNET_TIME_Relative timeout,
2183 GNUNET_TRANSPORT_AddressStringCallback
2186 const struct IPv4HttpAddress *t4;
2187 const struct IPv6HttpAddress *t6;
2188 struct sockaddr_in a4;
2189 struct sockaddr_in6 a6;
2195 GNUNET_assert(cls !=NULL);
2196 if (addrlen == sizeof (struct IPv6HttpAddress))
2198 address = GNUNET_malloc (INET6_ADDRSTRLEN);
2200 a6.sin6_addr = t6->ipv6_addr;
2201 inet_ntop(AF_INET6, &(a6.sin6_addr),address,INET6_ADDRSTRLEN);
2202 port = ntohs(t6->u6_port);
2204 else if (addrlen == sizeof (struct IPv4HttpAddress))
2206 address = GNUNET_malloc (INET_ADDRSTRLEN);
2208 a4.sin_addr.s_addr = t4->ipv4_addr;
2209 inet_ntop(AF_INET, &(a4.sin_addr),address,INET_ADDRSTRLEN);
2210 port = ntohs(t4->u_port);
2214 /* invalid address */
2215 GNUNET_break_op (0);
2216 asc (asc_cls, NULL);
2219 res = GNUNET_asprintf(&ret,"%s://%s:%u/", PROTOCOL_PREFIX, address, port);
2220 GNUNET_free (address);
2221 GNUNET_assert(res != 0);
2223 GNUNET_free_non_null (ret);
2229 * Another peer has suggested an address for this
2230 * peer and transport plugin. Check that this could be a valid
2231 * address. If so, consider adding it to the list
2234 * @param cls closure
2235 * @param addr pointer to the address
2236 * @param addrlen length of addr
2237 * @return GNUNET_OK if this is a plausible address for this peer
2241 http_plugin_address_suggested (void *cls,
2242 const void *addr, size_t addrlen)
2244 struct Plugin *plugin = cls;
2245 struct IPv4HttpAddress *v4;
2246 struct IPv6HttpAddress *v6;
2249 GNUNET_assert(cls !=NULL);
2250 if ((addrlen != sizeof (struct IPv4HttpAddress)) &&
2251 (addrlen != sizeof (struct IPv6HttpAddress)))
2253 return GNUNET_SYSERR;
2255 if (addrlen == sizeof (struct IPv4HttpAddress))
2257 v4 = (struct IPv4HttpAddress *) addr;
2258 /* Not skipping loopback
2259 if (INADDR_LOOPBACK == ntohl(v4->ipv4_addr))
2261 return GNUNET_SYSERR;
2263 port = ntohs (v4->u_port);
2264 if (port != plugin->port_inbound)
2266 return GNUNET_SYSERR;
2269 if (addrlen == sizeof (struct IPv6HttpAddress))
2271 v6 = (struct IPv6HttpAddress *) addr;
2272 if (IN6_IS_ADDR_LINKLOCAL (&v6->ipv6_addr))
2274 return GNUNET_SYSERR;
2276 port = ntohs (v6->u6_port);
2277 if (port != plugin->port_inbound)
2279 return GNUNET_SYSERR;
2288 * Function called for a quick conversion of the binary address to
2289 * a numeric address. Note that the caller must not free the
2290 * address and that the next call to this function is allowed
2291 * to override the address again.
2293 * @param cls closure
2294 * @param addr binary address
2295 * @param addrlen length of the address
2296 * @return string representing the same address
2299 http_plugin_address_to_string (void *cls,
2303 const struct IPv4HttpAddress *t4;
2304 const struct IPv6HttpAddress *t6;
2305 struct sockaddr_in a4;
2306 struct sockaddr_in6 a6;
2312 if (addrlen == sizeof (struct IPv6HttpAddress))
2314 address = GNUNET_malloc (INET6_ADDRSTRLEN);
2316 a6.sin6_addr = t6->ipv6_addr;
2317 inet_ntop(AF_INET6, &(a6.sin6_addr),address,INET6_ADDRSTRLEN);
2318 port = ntohs(t6->u6_port);
2320 else if (addrlen == sizeof (struct IPv4HttpAddress))
2322 address = GNUNET_malloc (INET_ADDRSTRLEN);
2324 a4.sin_addr.s_addr = t4->ipv4_addr;
2325 inet_ntop(AF_INET, &(a4.sin_addr),address,INET_ADDRSTRLEN);
2326 port = ntohs(t4->u_port);
2330 /* invalid address */
2333 res = GNUNET_asprintf(&ret,"%s:%u",address,port);
2334 GNUNET_free (address);
2335 GNUNET_assert(res != 0);
2341 * Exit point from the plugin.
2344 libgnunet_plugin_transport_http_done (void *cls)
2346 struct GNUNET_TRANSPORT_PluginFunctions *api = cls;
2347 struct Plugin *plugin = api->cls;
2349 GNUNET_assert(cls !=NULL);
2351 if (plugin->http_server_daemon_v4 != NULL)
2353 MHD_stop_daemon (plugin->http_server_daemon_v4);
2354 plugin->http_server_daemon_v4 = NULL;
2356 if (plugin->http_server_daemon_v6 != NULL)
2358 MHD_stop_daemon (plugin->http_server_daemon_v6);
2359 plugin->http_server_daemon_v6 = NULL;
2362 if ( plugin->http_server_task_v4 != GNUNET_SCHEDULER_NO_TASK)
2364 GNUNET_SCHEDULER_cancel(plugin->env->sched, plugin->http_server_task_v4);
2365 plugin->http_server_task_v4 = GNUNET_SCHEDULER_NO_TASK;
2368 if ( plugin->http_server_task_v6 != GNUNET_SCHEDULER_NO_TASK)
2370 GNUNET_SCHEDULER_cancel(plugin->env->sched, plugin->http_server_task_v6);
2371 plugin->http_server_task_v6 = GNUNET_SCHEDULER_NO_TASK;
2375 /* free all peer information */
2376 if (plugin->peers!=NULL)
2378 GNUNET_CONTAINER_multihashmap_iterate (plugin->peers,
2379 &remove_peer_context_Iterator,
2381 GNUNET_CONTAINER_multihashmap_destroy (plugin->peers);
2383 if (plugin->multi_handle!=NULL)
2385 mret = curl_multi_cleanup(plugin->multi_handle);
2387 if ( CURLM_OK != mret)
2388 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"curl multihandle clean up failed\n");
2390 plugin->multi_handle = NULL;
2392 curl_global_cleanup();
2394 if ( plugin->http_curl_task != GNUNET_SCHEDULER_NO_TASK)
2396 GNUNET_SCHEDULER_cancel(plugin->env->sched, plugin->http_curl_task);
2397 plugin->http_curl_task = GNUNET_SCHEDULER_NO_TASK;
2400 GNUNET_free_non_null (plugin->bind4_address);
2401 GNUNET_free_non_null (plugin->bind6_address);
2402 GNUNET_free_non_null(plugin->bind_hostname);
2403 GNUNET_free (plugin);
2406 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Unload http plugin complete...\n");
2413 * Entry point for the plugin.
2416 libgnunet_plugin_transport_http_init (void *cls)
2418 struct GNUNET_TRANSPORT_PluginEnvironment *env = cls;
2419 struct Plugin *plugin;
2420 struct GNUNET_TRANSPORT_PluginFunctions *api;
2421 struct GNUNET_TIME_Relative gn_timeout;
2422 long long unsigned int port;
2424 GNUNET_assert(cls !=NULL);
2426 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting http plugin...\n");
2429 plugin = GNUNET_malloc (sizeof (struct Plugin));
2430 plugin->stats = env->stats;
2432 plugin->peers = NULL;
2433 plugin->bind4_address = NULL;
2434 plugin->use_ipv6 = GNUNET_YES;
2435 plugin->use_ipv4 = GNUNET_YES;
2437 api = GNUNET_malloc (sizeof (struct GNUNET_TRANSPORT_PluginFunctions));
2439 api->send = &http_plugin_send;
2440 api->disconnect = &http_plugin_disconnect;
2441 api->address_pretty_printer = &http_plugin_address_pretty_printer;
2442 api->check_address = &http_plugin_address_suggested;
2443 api->address_to_string = &http_plugin_address_to_string;
2445 /* Hashing our identity to use it in URLs */
2446 GNUNET_CRYPTO_hash_to_enc ( &(plugin->env->my_identity->hashPubKey), &plugin->my_ascii_hash_ident);
2448 /* Reading port number from config file */
2449 if (GNUNET_CONFIGURATION_have_value (env->cfg,
2450 "transport-http", "USE_IPv6"))
2452 plugin->use_ipv6 = GNUNET_CONFIGURATION_get_value_yesno (env->cfg,
2456 /* Reading port number from config file */
2457 if (GNUNET_CONFIGURATION_have_value (env->cfg,
2458 "transport-http", "USE_IPv4"))
2460 plugin->use_ipv4 = GNUNET_CONFIGURATION_get_value_yesno (env->cfg,
2464 /* Reading port number from config file */
2466 GNUNET_CONFIGURATION_get_value_number (env->cfg,
2472 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
2474 _("Require valid port number for transport plugin `%s' in configuration!\n"),
2476 libgnunet_plugin_transport_http_done (api);
2480 /* Reading ipv4 addresse to bind to from config file */
2481 if ((plugin->use_ipv4==GNUNET_YES) && (GNUNET_CONFIGURATION_have_value (env->cfg,
2482 "transport-http", "BINDTO4")))
2484 GNUNET_break (GNUNET_OK ==
2485 GNUNET_CONFIGURATION_get_value_string (env->cfg,
2488 &plugin->bind_hostname));
2489 plugin->bind4_address = GNUNET_malloc(sizeof(struct sockaddr_in));
2490 plugin->bind4_address->sin_family = AF_INET;
2491 plugin->bind4_address->sin_port = htons (port);
2493 if (inet_pton(AF_INET,plugin->bind_hostname, &plugin->bind4_address->sin_addr)<=0)
2495 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
2497 _("Misconfigured address to bind to in configuration!\n"),
2499 GNUNET_free(plugin->bind4_address);
2500 GNUNET_free(plugin->bind_hostname);
2501 plugin->bind_hostname = NULL;
2502 plugin->bind4_address = NULL;
2506 /* Reading ipv4 addresse to bind to from config file */
2507 if ((plugin->use_ipv6==GNUNET_YES) && (GNUNET_CONFIGURATION_have_value (env->cfg,
2508 "transport-http", "BINDTO6")))
2510 if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string (env->cfg,
2513 &plugin->bind_hostname))
2515 plugin->bind6_address = GNUNET_malloc(sizeof(struct sockaddr_in6));
2516 plugin->bind6_address->sin6_family = AF_INET6;
2517 plugin->bind6_address->sin6_port = htons (port);
2519 if (inet_pton(AF_INET6,plugin->bind_hostname, &plugin->bind6_address->sin6_addr)<=0)
2521 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
2523 _("Misconfigured address to bind to in configuration!\n"),
2525 GNUNET_free(plugin->bind6_address);
2526 GNUNET_free(plugin->bind_hostname);
2527 plugin->bind_hostname = NULL;
2528 plugin->bind6_address = NULL;
2533 GNUNET_assert ((port > 0) && (port <= 65535));
2534 plugin->port_inbound = port;
2535 gn_timeout = GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT;
2536 unsigned int timeout = (gn_timeout.value) / 1000;
2537 if ((plugin->http_server_daemon_v6 == NULL) && (plugin->use_ipv6 == GNUNET_YES) && (port != 0))
2539 struct sockaddr * tmp = (struct sockaddr *) plugin->bind6_address;
2540 plugin->http_server_daemon_v6 = MHD_start_daemon (
2547 plugin , &mdh_access_cb, plugin,
2548 MHD_OPTION_SOCK_ADDR, tmp,
2549 MHD_OPTION_CONNECTION_LIMIT, (unsigned int) 32,
2550 //MHD_OPTION_PER_IP_CONNECTION_LIMIT, (unsigned int) 6,
2551 MHD_OPTION_CONNECTION_TIMEOUT, (unsigned int) timeout,
2552 MHD_OPTION_CONNECTION_MEMORY_LIMIT, (size_t) (2 * GNUNET_SERVER_MAX_MESSAGE_SIZE),
2553 MHD_OPTION_NOTIFY_COMPLETED, &mhd_termination_cb, NULL,
2554 MHD_OPTION_EXTERNAL_LOGGER, mhd_logger, plugin->mhd_log,
2557 if ((plugin->http_server_daemon_v4 == NULL) && (plugin->use_ipv4 == GNUNET_YES) && (port != 0))
2559 plugin->http_server_daemon_v4 = MHD_start_daemon (
2566 plugin , &mdh_access_cb, plugin,
2567 MHD_OPTION_SOCK_ADDR, (struct sockaddr_in *)plugin->bind4_address,
2568 MHD_OPTION_CONNECTION_LIMIT, (unsigned int) 32,
2569 //MHD_OPTION_PER_IP_CONNECTION_LIMIT, (unsigned int) 6,
2570 MHD_OPTION_CONNECTION_TIMEOUT, (unsigned int) timeout,
2571 MHD_OPTION_CONNECTION_MEMORY_LIMIT, (size_t) (2 * GNUNET_SERVER_MAX_MESSAGE_SIZE),
2572 MHD_OPTION_NOTIFY_COMPLETED, &mhd_termination_cb, NULL,
2573 MHD_OPTION_EXTERNAL_LOGGER, mhd_logger, plugin->mhd_log,
2576 if (plugin->http_server_daemon_v4 != NULL)
2577 plugin->http_server_task_v4 = http_server_daemon_prepare (plugin, plugin->http_server_daemon_v4);
2578 if (plugin->http_server_daemon_v6 != NULL)
2579 plugin->http_server_task_v6 = http_server_daemon_prepare (plugin, plugin->http_server_daemon_v6);
2582 if (plugin->http_server_task_v4 != GNUNET_SCHEDULER_NO_TASK)
2585 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting MHD with IPv4 bound to %s with port %u\n",(plugin->bind_hostname!=NULL) ? plugin->bind_hostname : "every address",port);
2588 else if ((plugin->http_server_task_v6 != GNUNET_SCHEDULER_NO_TASK) && (plugin->http_server_task_v4 != GNUNET_SCHEDULER_NO_TASK))
2591 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting MHD with IPv6 bound to %s with port %u\n",(plugin->bind_hostname!=NULL) ? plugin->bind_hostname : "every address", port);
2594 else if ((plugin->http_server_task_v6 != GNUNET_SCHEDULER_NO_TASK) && (plugin->http_server_task_v4 == GNUNET_SCHEDULER_NO_TASK))
2597 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting MHD with IPv4 and IPv6 bound to %s with port %u\n",(plugin->bind_hostname!=NULL) ? plugin->bind_hostname : "every address", port);
2603 if ((plugin->use_ipv6 == GNUNET_YES) && (plugin->use_ipv4 == GNUNET_YES))
2604 GNUNET_asprintf(&tmp,"with IPv4 and IPv6 enabled");
2605 if ((plugin->use_ipv6 == GNUNET_NO) && (plugin->use_ipv4 == GNUNET_YES))
2606 GNUNET_asprintf(&tmp,"with IPv4 enabled");
2607 if ((plugin->use_ipv6 == GNUNET_YES) && (plugin->use_ipv4 == GNUNET_NO))
2608 GNUNET_asprintf(&tmp,"with IPv6 enabled");
2609 if ((plugin->use_ipv6 == GNUNET_NO) && (plugin->use_ipv4 == GNUNET_NO))
2610 GNUNET_asprintf(&tmp,"with NO IP PROTOCOL enabled");
2611 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,"HTTP Server with %s could not be started on port %u! https plugin failed!\n",tmp, port);
2613 libgnunet_plugin_transport_http_done (api);
2617 /* Initializing cURL */
2618 curl_global_init(CURL_GLOBAL_ALL);
2619 plugin->multi_handle = curl_multi_init();
2621 if ( NULL == plugin->multi_handle )
2623 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
2625 _("Could not initialize curl multi handle, failed to start http plugin!\n"),
2627 libgnunet_plugin_transport_http_done (api);
2631 plugin->peers = GNUNET_CONTAINER_multihashmap_create (10);
2632 GNUNET_OS_network_interfaces_list (&process_interfaces, plugin);
2637 /* end of plugin_transport_http.c */