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_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 "gnunet_transport_plugin.h"
39 #include "gnunet_os_lib.h"
40 #include "microhttpd.h"
41 #include <curl/curl.h>
44 #define LIBGNUNET_PLUGIN_TRANSPORT_INIT libgnunet_plugin_transport_https_init
45 #define LIBGNUNET_PLUGIN_TRANSPORT_DONE libgnunet_plugin_transport_https_done
46 #define LIBGNUNET_PLUGIN_TRANSPORT_COMPONENT transport_https
47 #define PROTOCOL_PREFIX "https"
49 #define LIBGNUNET_PLUGIN_TRANSPORT_INIT libgnunet_plugin_transport_http_init
50 #define LIBGNUNET_PLUGIN_TRANSPORT_DONE libgnunet_plugin_transport_http_done
51 #define LIBGNUNET_PLUGIN_TRANSPORT_COMPONENT transport_http
52 #define PROTOCOL_PREFIX "http"
55 #define DEBUG_HTTP GNUNET_NO
56 #define DEBUG_CURL GNUNET_NO
57 #define DEBUG_MHD GNUNET_NO
58 #define DEBUG_CONNECTIONS GNUNET_NO
59 #define DEBUG_SESSION_SELECTION GNUNET_NO
60 #define DEBUG_SCHEDULING GNUNET_NO
61 #define CURL_TCP_NODELAY GNUNET_YES
63 #define INBOUND GNUNET_NO
64 #define OUTBOUND GNUNET_YES
69 * Text of the response sent back after the last bytes of a PUT
70 * request have been received (just to formally obey the HTTP
73 #define HTTP_PUT_RESPONSE "Thank you!"
76 * After how long do we expire an address that we
77 * learned from another peer if it is not reconfirmed
80 #define LEARNED_ADDRESS_EXPIRATION GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_HOURS, 6)
83 * Page returned if request invalid
85 #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>"
88 * Timeout for a http connect
90 #define HTTP_CONNECT_TIMEOUT 30
94 * Network format for IPv4 addresses.
96 struct IPv4HttpAddress
101 struct IPv4HttpAddress * next;
104 * Linked list previous
106 struct IPv4HttpAddress * prev;
109 * IPv4 address, in network byte order.
111 uint32_t ipv4_addr GNUNET_PACKED;
114 * Port number, in network byte order.
116 uint16_t u_port GNUNET_PACKED;
122 * Network format for IPv6 addresses.
124 struct IPv6HttpAddress
129 struct IPv6HttpAddress * next;
132 * Linked list previous
134 struct IPv6HttpAddress * prev;
139 struct in6_addr ipv6_addr GNUNET_PACKED;
142 * Port number, in network byte order.
144 uint16_t u6_port GNUNET_PACKED;
150 * Message to send using http
155 * next pointer for double linked list
157 struct HTTP_Message * next;
160 * previous pointer for double linked list
162 struct HTTP_Message * prev;
165 * buffer containing data to send
170 * amount of data already sent
180 * Continuation function to call once the transmission buffer
181 * has again space available. NULL if there is no
182 * continuation to call.
184 GNUNET_TRANSPORT_TransmitContinuation transmit_cont;
187 * Closure for transmit_cont.
189 void *transmit_cont_cls;
193 struct HTTP_PeerContext
198 struct GNUNET_PeerIdentity identity;
201 * Pointer to the global plugin struct.
203 struct Plugin *plugin;
206 * Linked list of connections with this peer
209 struct Session * head;
212 * Linked list of connections with this peer
215 struct Session * tail;
218 * id for next session
220 size_t session_id_counter;
223 * Last session used to send data
225 struct Session * last_session;
228 * The task resetting inbound quota delay
230 GNUNET_SCHEDULER_TaskIdentifier reset_task;
233 * Delay from transport service inbound quota tracker when to receive data again
235 struct GNUNET_TIME_Relative delay;
244 struct SessionHeader header;
247 * next session in linked list
249 struct Session * next;
252 * previous session in linked list
254 struct Session * prev;
257 * address of this session
272 * Message queue for outbound messages
275 struct HTTP_Message * pending_msgs_head;
278 * Message queue for outbound messages
281 struct HTTP_Message * pending_msgs_tail;
284 * partner peer this connection belongs to
286 struct HTTP_PeerContext * peercontext;
289 * message stream tokenizer for incoming data
291 struct GNUNET_SERVER_MessageStreamTokenizer *msgtok;
295 * outbound: OUTBOUND (GNUNET_YES)
296 * inbound : INBOUND (GNUNET_NO)
298 unsigned int direction;
301 * is session connected to send data?
303 unsigned int send_connected;
306 * is send connection active?
308 unsigned int send_active;
311 * connection disconnect forced (e.g. from transport)
313 unsigned int send_force_disconnect;
316 * is session connected to receive data?
318 unsigned int recv_connected;
321 * is receive connection active?
323 unsigned int recv_active;
326 * connection disconnect forced (e.g. from transport)
328 unsigned int recv_force_disconnect;
332 * id for next session
333 * NOTE: 0 is not an ID, zero is not defined. A correct ID is always > 0
338 * entity managing sending data
339 * outbound session: CURL *
340 * inbound session: mhd_connection *
342 void * send_endpoint;
345 * entity managing recieving data
346 * outbound session: CURL *
347 * inbound session: mhd_connection *
349 void * recv_endpoint;
354 size_t queue_length_cur;
359 size_t queue_length_max;
364 * Encapsulation of all of the state of the plugin.
371 struct GNUNET_TRANSPORT_PluginEnvironment *env;
374 * Handle for reporting statistics.
376 struct GNUNET_STATISTICS_Handle *stats;
381 uint16_t port_inbound;
383 struct GNUNET_CONTAINER_MultiHashMap *peers;
386 * Daemon for listening for new IPv4 connections.
388 struct MHD_Daemon *http_server_daemon_v4;
391 * Daemon for listening for new IPv6connections.
393 struct MHD_Daemon *http_server_daemon_v6;
396 * Our primary task for http daemon handling IPv4 connections
398 GNUNET_SCHEDULER_TaskIdentifier http_server_task_v4;
401 * Our primary task for http daemon handling IPv6 connections
403 GNUNET_SCHEDULER_TaskIdentifier http_server_task_v6;
406 * The task sending data
408 GNUNET_SCHEDULER_TaskIdentifier http_curl_task;
413 CURLM * multi_handle;
418 struct IPv4HttpAddress * ipv4_addr_head;
423 struct IPv4HttpAddress * ipv4_addr_tail;
428 struct IPv6HttpAddress * ipv6_addr_head;
433 struct IPv6HttpAddress * ipv6_addr_tail;
436 * Our ASCII encoded, hashed peer identity
437 * This string is used to distinguish between connections and is added to the urls
439 struct GNUNET_CRYPTO_HashAsciiEncoded my_ascii_hash_ident;
442 * IPv4 Address the plugin binds to
444 struct sockaddr_in * bind4_address;
447 * IPv6 Address the plugins binds to
449 struct sockaddr_in6 * bind6_address;
452 * Hostname to bind to
454 char * bind_hostname;
467 * use local addresses?
469 int use_localaddresses;
472 * Closure passed by MHD to the mhd_logger function
476 /* only needed for HTTPS plugin */
478 /* The certificate MHD uses as an \0 terminated string */
481 /* The private key MHD uses as an \0 terminated string */
484 /* crypto init string */
491 * Function called for a quick conversion of the binary address to
492 * a numeric address. Note that the caller must not free the
493 * address and that the next call to this function is allowed
494 * to override the address again.
497 * @param addr binary address
498 * @param addrlen length of the address
499 * @return string representing the same address
502 http_plugin_address_to_string (void *cls,
508 * Call MHD to process pending ipv4 requests and then go back
509 * and schedule the next run.
511 static void http_server_daemon_v4_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
513 * Call MHD to process pending ipv6 requests and then go back
514 * and schedule the next run.
516 static void http_server_daemon_v6_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
519 * Function setting up curl handle and selecting message to send
521 * @param plugin plugin
523 * @return GNUNET_SYSERR on failure, GNUNET_NO if connecting, GNUNET_YES if ok
525 static int send_check_connections (struct Plugin *plugin, struct Session *ps);
528 * Function setting up file descriptors and scheduling task to run
530 * @param plugin plugin as closure
531 * @return GNUNET_SYSERR for hard failure, GNUNET_OK for ok
533 static int curl_schedule (struct Plugin *plugin);
536 * Task scheduled to reset the inbound quota delay for a specific peer
537 * @param cls plugin as closure
538 * @param tc task context
540 static void reset_inbound_quota_delay (void *cls,
541 const struct GNUNET_SCHEDULER_TaskContext *tc)
543 struct HTTP_PeerContext * pc = cls;
545 GNUNET_assert(cls != NULL);
546 pc->reset_task = GNUNET_SCHEDULER_NO_TASK;
547 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
549 pc->delay = GNUNET_TIME_relative_get_zero ();
554 * Creates a valid url from passed address and id
555 * @param plugin plugin
556 * @param addr address to create url from
557 * @param addrlen address lenth
558 * @param id session id
559 * @return the created url
562 create_url(struct Plugin *plugin,
563 const void * addr, size_t addrlen,
567 char *addr_str = (char *) http_plugin_address_to_string(NULL, addr, addrlen);
569 GNUNET_assert ((addr!=NULL) && (addrlen != 0));
570 GNUNET_asprintf(&url,
571 "%s://%s/%s;%u", PROTOCOL_PREFIX, addr_str,
572 (char *) (&plugin->my_ascii_hash_ident),id);
573 GNUNET_free_non_null(addr_str);
579 * Removes a message from the linked list of messages
582 * @return GNUNET_SYSERR if msg not found, GNUNET_OK on success
585 remove_http_message (struct Session * ps,
586 struct HTTP_Message * msg)
588 GNUNET_CONTAINER_DLL_remove(ps->pending_msgs_head,
589 ps->pending_msgs_tail,
596 * Iterator to remove peer context
597 * @param cls the plugin
598 * @param key the peers public key hashcode
599 * @param value the peer context
600 * @return GNUNET_YES on success
603 remove_peer_context_Iterator (void *cls,
604 const GNUNET_HashCode *key,
607 struct Plugin *plugin = cls;
608 struct HTTP_PeerContext * pc = value;
609 struct Session * ps = pc->head;
610 struct Session * tmp = NULL;
611 struct HTTP_Message * msg = NULL;
612 struct HTTP_Message * msg_tmp = NULL;
615 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
616 "Freeing context for peer `%s'\n",
617 GNUNET_i2s(&pc->identity));
619 GNUNET_CONTAINER_multihashmap_remove (plugin->peers, &pc->identity.hashPubKey, pc);
622 plugin->env->session_end(plugin, &pc->identity, ps);
625 GNUNET_free_non_null (ps->addr);
626 GNUNET_free(ps->url);
627 if (ps->msgtok != NULL)
628 GNUNET_SERVER_mst_destroy (ps->msgtok);
630 msg = ps->pending_msgs_head;
637 if (ps->direction==OUTBOUND)
639 if (ps->send_endpoint!=NULL)
640 curl_easy_cleanup(ps->send_endpoint);
641 if (ps->recv_endpoint!=NULL)
642 curl_easy_cleanup(ps->recv_endpoint);
648 GNUNET_STATISTICS_update (plugin->env->stats,
649 gettext_noop ("# HTTP peers active"),
657 * Removes a session from the linked list of sessions
658 * @param pc peer context
660 * @param call_msg_cont GNUNET_YES to call pending message continuations, otherwise no
661 * @param call_msg_cont_result result to call message continuations with
662 * @return GNUNET_SYSERR if msg not found, GNUNET_OK on success
665 remove_session (struct HTTP_PeerContext * pc,
668 int call_msg_cont_result)
670 struct HTTP_Message * msg;
671 struct Plugin * plugin = ps->peercontext->plugin;
673 #if DEBUG_CONNECTIONS
674 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
675 "Connection %X: removing %s session %X with id %u\n",
677 (ps->direction == INBOUND)
682 plugin->env->session_end(plugin, &pc->identity, ps);
683 GNUNET_free_non_null (ps->addr);
684 GNUNET_SERVER_mst_destroy (ps->msgtok);
685 GNUNET_free(ps->url);
686 if (ps->direction==INBOUND)
688 if (ps->recv_endpoint != NULL)
690 curl_easy_cleanup(ps->recv_endpoint);
691 ps->recv_endpoint = NULL;
693 if (ps->send_endpoint != NULL)
695 curl_easy_cleanup(ps->send_endpoint);
696 ps->send_endpoint = NULL;
700 msg = ps->pending_msgs_head;
703 if ((call_msg_cont == GNUNET_YES) && (msg->transmit_cont!=NULL))
705 msg->transmit_cont (msg->transmit_cont_cls,
707 call_msg_cont_result);
709 GNUNET_CONTAINER_DLL_remove(ps->pending_msgs_head,
710 ps->pending_msgs_head,
713 msg = ps->pending_msgs_head;
716 GNUNET_CONTAINER_DLL_remove(pc->head,pc->tail,ps);
720 /* no sessions left remove peer */
724 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
725 "No sessions left for peer `%s', removing context\n",
726 GNUNET_i2s(&pc->identity));
728 remove_peer_context_Iterator(plugin, &pc->identity.hashPubKey, pc);
734 static int check_localaddress (const struct sockaddr *addr, socklen_t addrlen)
737 int local = GNUNET_NO;
738 int af = addr->sa_family;
743 uint32_t netmask = 0x7F000000;
744 uint32_t address = ntohl (((struct sockaddr_in *) addr)->sin_addr.s_addr);
745 res = (address >> 24) ^ (netmask >> 24);
751 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
752 "Checking IPv4 address `%s': %s\n", GNUNET_a2s (addr, addrlen), (local==GNUNET_YES) ? "local" : "global");
758 if (IN6_IS_ADDR_LOOPBACK (&((struct sockaddr_in6 *) addr)->sin6_addr) ||
759 IN6_IS_ADDR_LINKLOCAL (&((struct sockaddr_in6 *) addr)->sin6_addr))
764 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
765 "Checking IPv6 address `%s' : %s\n", GNUNET_a2s (addr, addrlen), (local==GNUNET_YES) ? "local" : "global");
774 * Add the IP of our network interface to the list of
775 * our external IP addresses.
777 * @param cls the 'struct Plugin*'
778 * @param name name of the interface
779 * @param isDefault do we think this may be our default interface
780 * @param addr address of the interface
781 * @param addrlen number of bytes in addr
782 * @return GNUNET_OK to continue iterating
785 process_interfaces (void *cls,
788 const struct sockaddr *addr, socklen_t addrlen)
790 struct Plugin *plugin = cls;
791 struct IPv4HttpAddress * t4;
792 struct IPv6HttpAddress * t6;
795 if (plugin->use_localaddresses == GNUNET_NO)
797 if (GNUNET_YES == check_localaddress (addr, addrlen))
800 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
802 "Not notifying transport of address `%s' (local address)\n",
803 GNUNET_a2s (addr, addrlen));
810 GNUNET_assert(cls !=NULL);
811 af = addr->sa_family;
812 if ((af == AF_INET) &&
813 (plugin->use_ipv4 == GNUNET_YES) &&
814 (plugin->bind6_address == NULL) ) {
816 struct in_addr bnd_cmp = ((struct sockaddr_in *) addr)->sin_addr;
817 t4 = GNUNET_malloc(sizeof(struct IPv4HttpAddress));
818 // Not skipping loopback addresses
821 t4->ipv4_addr = ((struct sockaddr_in *) addr)->sin_addr.s_addr;
822 t4->u_port = htons (plugin->port_inbound);
823 if (plugin->bind4_address != NULL) {
824 if (0 == memcmp(&plugin->bind4_address->sin_addr, &bnd_cmp, sizeof (struct in_addr)))
826 GNUNET_CONTAINER_DLL_insert(plugin->ipv4_addr_head,
827 plugin->ipv4_addr_tail,t4);
828 plugin->env->notify_address(plugin->env->cls,
830 t4, sizeof (struct IPv4HttpAddress),
831 GNUNET_TIME_UNIT_FOREVER_REL);
839 GNUNET_CONTAINER_DLL_insert (plugin->ipv4_addr_head,
840 plugin->ipv4_addr_tail,
842 plugin->env->notify_address (plugin->env->cls,
844 t4, sizeof (struct IPv4HttpAddress),
845 GNUNET_TIME_UNIT_FOREVER_REL);
849 if ((af == AF_INET6) &&
850 (plugin->use_ipv6 == GNUNET_YES) &&
851 (plugin->bind4_address == NULL) ) {
853 struct in6_addr bnd_cmp6 = ((struct sockaddr_in6 *) addr)->sin6_addr;
855 t6 = GNUNET_malloc(sizeof(struct IPv6HttpAddress));
856 GNUNET_assert(t6 != NULL);
858 if (plugin->bind6_address != NULL) {
859 if (0 == memcmp(&plugin->bind6_address->sin6_addr,
861 sizeof (struct in6_addr))) {
862 memcpy (&t6->ipv6_addr,
863 &((struct sockaddr_in6 *) addr)->sin6_addr,
864 sizeof (struct in6_addr));
865 t6->u6_port = htons (plugin->port_inbound);
866 plugin->env->notify_address(plugin->env->cls,
868 sizeof (struct IPv6HttpAddress),
869 GNUNET_TIME_UNIT_FOREVER_REL);
870 GNUNET_CONTAINER_DLL_insert(plugin->ipv6_addr_head,
871 plugin->ipv6_addr_tail,
878 memcpy (&t6->ipv6_addr,
879 &((struct sockaddr_in6 *) addr)->sin6_addr,
880 sizeof (struct in6_addr));
881 t6->u6_port = htons (plugin->port_inbound);
882 GNUNET_CONTAINER_DLL_insert(plugin->ipv6_addr_head,plugin->ipv6_addr_tail,t6);
883 plugin->env->notify_address(plugin->env->cls,
885 t6, sizeof (struct IPv6HttpAddress),
886 GNUNET_TIME_UNIT_FOREVER_REL);
893 * External logging function for MHD
894 * @param arg arguments
895 * @param fmt format string
896 * @param ap list of arguments
899 mhd_logger (void * arg,
905 vsnprintf(text, sizeof(text), fmt, ap);
907 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
914 mhd_termination_cb (void *cls,
915 struct MHD_Connection * connection,
916 void **httpSessionCache)
918 struct Session * ps = *httpSessionCache;
921 struct HTTP_PeerContext * pc = ps->peercontext;
923 if (connection==ps->recv_endpoint)
925 #if DEBUG_CONNECTIONS
926 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
927 "Connection %X: inbound connection from peer `%s' was terminated\n",
929 GNUNET_i2s(&pc->identity));
931 ps->recv_active = GNUNET_NO;
932 ps->recv_connected = GNUNET_NO;
933 ps->recv_endpoint = NULL;
935 if (connection==ps->send_endpoint)
937 ps->send_active = GNUNET_NO;
938 ps->send_connected = GNUNET_NO;
939 ps->send_endpoint = NULL;
940 #if DEBUG_CONNECTIONS
941 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
942 "Connection %X: outbound connection from peer `%s' was terminated\n",
944 GNUNET_i2s(&pc->identity));
948 /* if both connections disconnected, remove session */
949 if ( (ps->send_connected == GNUNET_NO) &&
950 (ps->recv_connected == GNUNET_NO) )
952 GNUNET_STATISTICS_update (pc->plugin->env->stats,
953 gettext_noop ("# HTTP inbound sessions for peers active"),
956 remove_session(pc,ps,GNUNET_YES,GNUNET_SYSERR);
962 * Callback called by MessageStreamTokenizer when a message has arrived
963 * @param cls current session as closure
964 * @param client clien
965 * @param message the message to be forwarded to transport service
968 mhd_write_mst_cb (void *cls,
970 const struct GNUNET_MessageHeader *message)
972 struct Session *ps = cls;
973 struct HTTP_PeerContext *pc = ps->peercontext;
974 struct GNUNET_TIME_Relative delay;
976 GNUNET_assert(ps != NULL);
977 GNUNET_assert(pc != NULL);
979 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
980 "Connection %X: Forwarding message to transport service, type %u and size %u from `%s' (`%s')\n",
982 ntohs(message->type),
983 ntohs(message->size),
984 GNUNET_i2s(&(ps->peercontext)->identity),
985 http_plugin_address_to_string(NULL,ps->addr,ps->addrlen));
987 struct GNUNET_TRANSPORT_ATS_Information distance[2];
988 distance[0].type = htonl (GNUNET_TRANSPORT_ATS_QUALITY_NET_DISTANCE);
989 distance[0].value = htonl (1);
990 distance[1].type = htonl (GNUNET_TRANSPORT_ATS_ARRAY_TERMINATOR);
991 distance[1].value = htonl (0);
992 delay = pc->plugin->env->receive (ps->peercontext->plugin->env->cls,
995 (const struct GNUNET_TRANSPORT_ATS_Information *) &distance,
1001 if (pc->reset_task != GNUNET_SCHEDULER_NO_TASK)
1002 GNUNET_SCHEDULER_cancel (pc->reset_task);
1004 if (delay.rel_value > 0)
1007 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1008 "Connection %X: Inbound quota management: delay next read for %llu ms \n",
1012 pc->reset_task = GNUNET_SCHEDULER_add_delayed (delay, &reset_inbound_quota_delay, pc);
1018 * Check if incoming connection is accepted.
1019 * NOTE: Here every connection is accepted
1020 * @param cls plugin as closure
1021 * @param addr address of incoming connection
1022 * @param addr_len address length of incoming connection
1023 * @return MHD_YES if connection is accepted, MHD_NO if connection is rejected
1027 mhd_accept_cb (void *cls,
1028 const struct sockaddr *addr,
1032 struct Plugin *plugin = cls;
1034 /* Every connection is accepted, nothing more to do here */
1040 * Callback called by MHD when it needs data to send
1041 * @param cls current session
1042 * @param pos position in buffer
1043 * @param buf the buffer to write data to
1044 * @param max max number of bytes available in buffer
1045 * @return bytes written to buffer
1048 mhd_send_callback (void *cls, uint64_t pos, char *buf, size_t max)
1050 struct Session * ps = cls;
1051 struct HTTP_PeerContext * pc;
1052 struct HTTP_Message * msg;
1055 GNUNET_assert (ps!=NULL);
1057 pc = ps->peercontext;
1058 msg = ps->pending_msgs_tail;
1059 if (ps->send_force_disconnect==GNUNET_YES)
1061 #if DEBUG_CONNECTIONS
1062 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1063 "Connection %X: outbound forced to disconnect\n",
1071 if ((msg->size-msg->pos) <= max)
1073 memcpy(buf,&msg->buf[msg->pos],(msg->size-msg->pos));
1074 bytes_read = msg->size-msg->pos;
1075 msg->pos+=(msg->size-msg->pos);
1079 memcpy(buf,&msg->buf[msg->pos],max);
1084 if (msg->pos==msg->size)
1086 if (NULL!=msg->transmit_cont)
1087 msg->transmit_cont (msg->transmit_cont_cls,&pc->identity,GNUNET_OK);
1088 ps->queue_length_cur -= msg->size;
1089 remove_http_message(ps,msg);
1092 #if DEBUG_CONNECTIONS
1093 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1094 "Connection %X: MHD has sent %u bytes\n",
1103 * Process GET or PUT request received via MHD. For
1104 * GET, queue response that will send back our pending
1105 * messages. For PUT, process incoming data and send
1106 * to GNUnet core. In either case, check if a session
1107 * already exists and create a new one if not.
1110 mhd_access_cb (void *cls,
1111 struct MHD_Connection *mhd_connection,
1114 const char *version,
1115 const char *upload_data,
1116 size_t * upload_data_size,
1117 void **httpSessionCache)
1119 struct Plugin *plugin = cls;
1120 struct MHD_Response *response;
1121 const union MHD_ConnectionInfo * conn_info;
1122 const struct sockaddr *client_addr;
1123 const struct sockaddr_in *addrin;
1124 const struct sockaddr_in6 *addrin6;
1125 char address[INET6_ADDRSTRLEN+14];
1126 struct GNUNET_PeerIdentity pi_in;
1128 struct IPv4HttpAddress ipv4addr;
1129 struct IPv6HttpAddress ipv6addr;
1130 struct HTTP_PeerContext *pc = NULL;
1131 struct Session *ps = NULL;
1132 struct Session *ps_tmp = NULL;
1133 int res = GNUNET_NO;
1135 size_t addr_len = 0 ;
1137 GNUNET_assert(cls !=NULL);
1139 if (NULL == *httpSessionCache)
1141 /* check url for peer identity , if invalid send HTTP 404*/
1142 size_t len = strlen(&url[1]);
1143 char * peer = GNUNET_malloc(104+1);
1145 if ( (len>104) && (url[104]==';'))
1147 char * id = GNUNET_malloc((len-104)+1);
1148 strcpy(id,&url[105]);
1149 memcpy(peer,&url[1],103);
1151 id_num = strtoul ( id, NULL , 10);
1154 res = GNUNET_CRYPTO_hash_from_string (peer, &(pi_in.hashPubKey));
1156 if ( GNUNET_SYSERR == res )
1158 response = MHD_create_response_from_data (strlen (HTTP_ERROR_RESPONSE),
1159 HTTP_ERROR_RESPONSE,
1161 res = MHD_queue_response (mhd_connection, MHD_HTTP_NOT_FOUND, response);
1162 MHD_destroy_response (response);
1163 #if DEBUG_CONNECTIONS
1165 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1166 "Peer has no valid ident, sent HTTP 1.1/404\n");
1168 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1169 "Peer has no valid ident, could not send error\n");
1176 ps = *httpSessionCache;
1177 pc = ps->peercontext;
1180 if (NULL == *httpSessionCache)
1182 /* get peer context */
1183 pc = GNUNET_CONTAINER_multihashmap_get (plugin->peers, &pi_in.hashPubKey);
1187 pc = GNUNET_malloc(sizeof (struct HTTP_PeerContext));
1188 pc->plugin = plugin;
1189 pc->session_id_counter=1;
1190 pc->last_session = NULL;
1191 memcpy(&pc->identity, &pi_in, sizeof(struct GNUNET_PeerIdentity));
1192 GNUNET_CONTAINER_multihashmap_put(plugin->peers,
1193 &pc->identity.hashPubKey,
1195 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
1196 GNUNET_STATISTICS_update (plugin->env->stats,
1197 gettext_noop ("# HTTP peers active"),
1202 conn_info = MHD_get_connection_info(mhd_connection, MHD_CONNECTION_INFO_CLIENT_ADDRESS );
1203 /* Incoming IPv4 connection */
1204 /* cast required for legacy MHD API < 0.9.6 */
1205 client_addr = (const struct sockaddr *) conn_info->client_addr;
1206 if ( AF_INET == client_addr->sa_family)
1208 addrin = (const struct sockaddr_in*) client_addr;
1209 inet_ntop(addrin->sin_family, &(addrin->sin_addr),address,INET_ADDRSTRLEN);
1210 memcpy(&ipv4addr.ipv4_addr,&(addrin->sin_addr),sizeof(struct in_addr));
1211 ipv4addr.u_port = addrin->sin_port;
1213 addr_len = sizeof(struct IPv4HttpAddress);
1215 /* Incoming IPv6 connection */
1216 if ( AF_INET6 == client_addr->sa_family)
1218 addrin6 = (const struct sockaddr_in6 *) client_addr;
1219 inet_ntop(addrin6->sin6_family, &(addrin6->sin6_addr),address,INET6_ADDRSTRLEN);
1220 memcpy(&ipv6addr.ipv6_addr,&(addrin6->sin6_addr),sizeof(struct in6_addr));
1221 ipv6addr.u6_port = addrin6->sin6_port;
1223 addr_len = sizeof(struct IPv6HttpAddress);
1226 GNUNET_assert (addr != NULL);
1227 GNUNET_assert (addr_len != 0);
1230 /* only inbound sessions here */
1233 while (ps_tmp!=NULL)
1235 if ((ps_tmp->direction==INBOUND) && (ps_tmp->session_id == id_num) && (id_num!=0))
1237 if ((ps_tmp->recv_force_disconnect!=GNUNET_YES) && (ps_tmp->send_force_disconnect!=GNUNET_YES))
1241 ps_tmp=ps_tmp->next;
1246 ps = GNUNET_malloc(sizeof (struct Session));
1247 ps->addr = GNUNET_malloc(addr_len);
1248 memcpy(ps->addr,addr,addr_len);
1249 ps->addrlen = addr_len;
1250 ps->direction=INBOUND;
1251 ps->pending_msgs_head = NULL;
1252 ps->pending_msgs_tail = NULL;
1253 ps->send_connected=GNUNET_NO;
1254 ps->send_active=GNUNET_NO;
1255 ps->recv_connected=GNUNET_NO;
1256 ps->recv_active=GNUNET_NO;
1258 ps->session_id =id_num;
1259 ps->queue_length_cur = 0;
1260 ps->queue_length_max = GNUNET_SERVER_MAX_MESSAGE_SIZE;
1261 ps->url = create_url (plugin, ps->addr, ps->addrlen, ps->session_id);
1262 GNUNET_CONTAINER_DLL_insert(pc->head,pc->tail,ps);
1263 GNUNET_STATISTICS_update (plugin->env->stats,
1264 gettext_noop ("# HTTP inbound sessions for peers active"),
1269 *httpSessionCache = ps;
1270 if (ps->msgtok==NULL)
1271 ps->msgtok = GNUNET_SERVER_mst_create (&mhd_write_mst_cb, ps);
1273 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1274 "Connection %X: HTTP Daemon has new an incoming `%s' request from peer `%s' (`%s')\n",
1277 GNUNET_i2s(&pc->identity),
1278 http_plugin_address_to_string(NULL, ps->addr, ps->addrlen));
1282 /* Is it a PUT or a GET request */
1283 if (0 == strcmp (MHD_HTTP_METHOD_PUT, method))
1285 if (ps->recv_force_disconnect == GNUNET_YES)
1287 #if DEBUG_CONNECTIONS
1288 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1289 "Connection %X: inbound connection was forced to disconnect\n",ps);
1291 ps->recv_active = GNUNET_NO;
1294 if ((*upload_data_size == 0) && (ps->recv_active==GNUNET_NO))
1296 ps->recv_endpoint = mhd_connection;
1297 ps->recv_connected = GNUNET_YES;
1298 ps->recv_active = GNUNET_YES;
1299 ps->recv_force_disconnect = GNUNET_NO;
1300 #if DEBUG_CONNECTIONS
1301 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1302 "Connection %X: inbound PUT connection connected\n",ps);
1307 /* Transmission of all data complete */
1308 if ((*upload_data_size == 0) && (ps->recv_active == GNUNET_YES))
1310 response = MHD_create_response_from_data (strlen (HTTP_PUT_RESPONSE),
1313 res = MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
1314 #if DEBUG_CONNECTIONS
1315 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1316 "Connection %X: Sent HTTP/1.1: 200 OK as PUT Response\n",
1319 MHD_destroy_response (response);
1320 ps->recv_active=GNUNET_NO;
1324 /* Recieving data */
1325 if ((*upload_data_size > 0) && (ps->recv_active == GNUNET_YES))
1327 if (pc->delay.rel_value == 0)
1330 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1331 "Connection %X: PUT with %u bytes forwarded to MST\n",
1332 ps, *upload_data_size);
1334 res = GNUNET_SERVER_mst_receive(ps->msgtok, ps,
1335 upload_data, *upload_data_size,
1336 GNUNET_NO, GNUNET_NO);
1337 (*upload_data_size) = 0;
1342 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1343 "Connection %X: no inbound bandwidth available! Next read was delayed for %llu ms\n",
1345 ps->peercontext->delay.rel_value);
1353 if ( 0 == strcmp (MHD_HTTP_METHOD_GET, method) )
1355 if (ps->send_force_disconnect == GNUNET_YES)
1357 #if DEBUG_CONNECTIONS
1358 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1359 "Connection %X: outbound connection was forced to disconnect\n",
1362 ps->send_active = GNUNET_NO;
1365 ps->send_connected = GNUNET_YES;
1366 ps->send_active = GNUNET_YES;
1367 ps->send_endpoint = mhd_connection;
1368 ps->send_force_disconnect = GNUNET_NO;
1369 #if DEBUG_CONNECTIONS
1370 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1371 "Connection %X: inbound GET connection connected\n",
1374 response = MHD_create_response_from_callback(-1,32 * 1024, &mhd_send_callback, ps, NULL);
1375 res = MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
1376 MHD_destroy_response (response);
1384 * Function that queries MHD's select sets and
1385 * starts the task waiting for them.
1386 * @param plugin plugin
1387 * @param daemon_handle the MHD daemon handle
1388 * @return gnunet task identifier
1390 static GNUNET_SCHEDULER_TaskIdentifier
1391 http_server_daemon_prepare (struct Plugin *plugin,
1392 struct MHD_Daemon *daemon_handle)
1394 GNUNET_SCHEDULER_TaskIdentifier ret;
1398 struct GNUNET_NETWORK_FDSet *wrs;
1399 struct GNUNET_NETWORK_FDSet *wws;
1400 struct GNUNET_NETWORK_FDSet *wes;
1402 unsigned long long timeout;
1404 struct GNUNET_TIME_Relative tv;
1406 ret = GNUNET_SCHEDULER_NO_TASK;
1410 wrs = GNUNET_NETWORK_fdset_create ();
1411 wes = GNUNET_NETWORK_fdset_create ();
1412 wws = GNUNET_NETWORK_fdset_create ();
1414 GNUNET_assert (MHD_YES ==
1415 MHD_get_fdset (daemon_handle,
1420 haveto = MHD_get_timeout (daemon_handle, &timeout);
1421 if (haveto == MHD_YES)
1422 tv.rel_value = (uint64_t) timeout;
1424 tv = GNUNET_TIME_UNIT_SECONDS;
1425 GNUNET_NETWORK_fdset_copy_native (wrs, &rs, max + 1);
1426 GNUNET_NETWORK_fdset_copy_native (wws, &ws, max + 1);
1427 GNUNET_NETWORK_fdset_copy_native (wes, &es, max + 1);
1428 if (daemon_handle == plugin->http_server_daemon_v4)
1430 if (plugin->http_server_task_v4 != GNUNET_SCHEDULER_NO_TASK)
1432 GNUNET_SCHEDULER_cancel(plugin->http_server_task_v4);
1433 plugin->http_server_daemon_v4 = GNUNET_SCHEDULER_NO_TASK;
1436 ret = GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1437 GNUNET_SCHEDULER_NO_TASK,
1441 &http_server_daemon_v4_run,
1444 if (daemon_handle == plugin->http_server_daemon_v6)
1446 if (plugin->http_server_task_v6 != GNUNET_SCHEDULER_NO_TASK)
1448 GNUNET_SCHEDULER_cancel(plugin->http_server_task_v6);
1449 plugin->http_server_task_v6 = GNUNET_SCHEDULER_NO_TASK;
1452 ret = GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1453 GNUNET_SCHEDULER_NO_TASK,
1457 &http_server_daemon_v6_run,
1460 GNUNET_NETWORK_fdset_destroy (wrs);
1461 GNUNET_NETWORK_fdset_destroy (wws);
1462 GNUNET_NETWORK_fdset_destroy (wes);
1468 * Call MHD IPv4 to process pending requests and then go back
1469 * and schedule the next run.
1470 * @param cls plugin as closure
1471 * @param tc task context
1474 http_server_daemon_v4_run (void *cls,
1475 const struct GNUNET_SCHEDULER_TaskContext *tc)
1477 struct Plugin *plugin = cls;
1479 #if DEBUG_SCHEDULING
1480 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_READ_READY))
1481 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1482 "http_server_daemon_v4_run: GNUNET_SCHEDULER_REASON_READ_READY\n");
1483 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_WRITE_READY))
1484 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1485 "http_server_daemon_v4_run: GNUNET_SCHEDULER_REASON_WRITE_READY\n");
1486 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_TIMEOUT))
1487 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1488 "http_server_daemon_v4_run: GNUNET_SCHEDULER_REASON_TIMEOUT\n");
1489 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_STARTUP))
1490 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1491 "http_server_daemon_v4_run: GGNUNET_SCHEDULER_REASON_STARTUP\n");
1492 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
1493 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1494 "http_server_daemon_v4_run: GGNUNET_SCHEDULER_REASON_SHUTDOWN\n");
1497 GNUNET_assert(cls !=NULL);
1498 plugin->http_server_task_v4 = GNUNET_SCHEDULER_NO_TASK;
1500 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
1503 GNUNET_assert (MHD_YES == MHD_run (plugin->http_server_daemon_v4));
1504 plugin->http_server_task_v4 = http_server_daemon_prepare (plugin, plugin->http_server_daemon_v4);
1509 * Call MHD IPv6 to process pending requests and then go back
1510 * and schedule the next run.
1511 * @param cls plugin as closure
1512 * @param tc task context
1515 http_server_daemon_v6_run (void *cls,
1516 const struct GNUNET_SCHEDULER_TaskContext *tc)
1518 struct Plugin *plugin = cls;
1520 #if DEBUG_SCHEDULING
1521 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_READ_READY))
1522 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1523 "http_server_daemon_v6_run: GNUNET_SCHEDULER_REASON_READ_READY\n");
1524 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_WRITE_READY))
1525 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1526 "http_server_daemon_v6_run: GNUNET_SCHEDULER_REASON_WRITE_READY\n");
1527 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_TIMEOUT))
1528 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1529 "http_server_daemon_v6_run: GNUNET_SCHEDULER_REASON_TIMEOUT\n");
1530 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_STARTUP))
1531 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1532 "http_server_daemon_v6_run: GGNUNET_SCHEDULER_REASON_STARTUP\n");
1533 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
1534 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1535 "http_server_daemon_v6_run: GGNUNET_SCHEDULER_REASON_SHUTDOWN\n");
1538 GNUNET_assert(cls !=NULL);
1539 plugin->http_server_task_v6 = GNUNET_SCHEDULER_NO_TASK;
1541 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
1544 GNUNET_assert (MHD_YES == MHD_run (plugin->http_server_daemon_v6));
1545 plugin->http_server_task_v6 = http_server_daemon_prepare (plugin, plugin->http_server_daemon_v6);
1550 curl_get_header_cb( void *ptr,
1551 size_t size, size_t nmemb,
1554 struct Session * ps = stream;
1556 long http_result = 0;
1558 /* Getting last http result code */
1559 GNUNET_assert(NULL!=ps);
1560 if (ps->recv_connected==GNUNET_NO)
1562 res = curl_easy_getinfo(ps->recv_endpoint, CURLINFO_RESPONSE_CODE, &http_result);
1563 if (CURLE_OK == res)
1565 if (http_result == 200)
1567 ps->recv_connected = GNUNET_YES;
1568 ps->recv_active = GNUNET_YES;
1569 #if DEBUG_CONNECTIONS
1570 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: connected to recieve data\n",ps);
1572 // Calling send_check_connections again since receive is established
1573 send_check_connections (ps->peercontext->plugin, ps);
1580 size_t len = size * nmemb;
1582 if ((size * nmemb) < SIZE_MAX)
1583 tmp = GNUNET_malloc (len+1);
1585 if ((tmp != NULL) && (len > 0))
1587 memcpy(tmp,ptr,len);
1590 if (tmp[len-2] == 13)
1593 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1594 "Connection %X: Header: %s\n",
1597 GNUNET_free_non_null (tmp);
1600 return size * nmemb;
1605 * Callback called by libcurl when new headers arrive
1606 * Used to get HTTP result for curl operations
1607 * @param ptr stream to read from
1608 * @param size size of one char element
1609 * @param nmemb number of char elements
1610 * @param stream closure set by user
1611 * @return bytes read by function
1614 curl_put_header_cb(void *ptr,
1619 struct Session * ps = stream;
1622 size_t len = size * nmemb;
1623 long http_result = 0;
1626 /* Getting last http result code */
1627 GNUNET_assert(NULL!=ps);
1628 res = curl_easy_getinfo (ps->send_endpoint, CURLINFO_RESPONSE_CODE, &http_result);
1629 if (CURLE_OK == res)
1631 if ((http_result == 100) && (ps->send_connected==GNUNET_NO))
1633 ps->send_connected = GNUNET_YES;
1634 ps->send_active = GNUNET_YES;
1635 #if DEBUG_CONNECTIONS
1636 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1637 "Connection %X: connected to send data\n",
1641 if ((http_result == 200) && (ps->send_connected==GNUNET_YES))
1643 ps->send_connected = GNUNET_NO;
1644 ps->send_active = GNUNET_NO;
1645 #if DEBUG_CONNECTIONS
1646 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1647 "Connection %X: sending disconnected\n",
1654 if ((size * nmemb) < SIZE_MAX)
1655 tmp = GNUNET_malloc (len+1);
1657 if ((tmp != NULL) && (len > 0))
1659 memcpy(tmp,ptr,len);
1662 if (tmp[len-2] == 13)
1666 GNUNET_free_non_null (tmp);
1667 return size * nmemb;
1671 * Callback method used with libcurl
1672 * Method is called when libcurl needs to read data during sending
1673 * @param stream pointer where to write data
1674 * @param size size of an individual element
1675 * @param nmemb count of elements that can be written to the buffer
1676 * @param ptr source pointer, passed to the libcurl handle
1677 * @return bytes written to stream
1680 curl_send_cb(void *stream,
1681 size_t size, size_t nmemb,
1684 struct Session * ps = ptr;
1685 struct HTTP_Message * msg = ps->pending_msgs_tail;
1689 if (ps->send_active == GNUNET_NO)
1690 return CURL_READFUNC_PAUSE;
1691 if ( (ps->pending_msgs_tail == NULL) &&
1692 (ps->send_active == GNUNET_YES) )
1694 #if DEBUG_CONNECTIONS
1695 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1696 "Connection %X: No Message to send, pausing connection\n",
1699 ps->send_active = GNUNET_NO;
1700 return CURL_READFUNC_PAUSE;
1703 GNUNET_assert (msg!=NULL);
1706 if (msg->pos < msg->size)
1708 /* data fit in buffer */
1709 if ((msg->size - msg->pos) <= (size * nmemb))
1711 len = (msg->size - msg->pos);
1712 memcpy(stream, &msg->buf[msg->pos], len);
1719 memcpy(stream, &msg->buf[msg->pos], len);
1724 /* no data to send */
1730 if ( msg->pos == msg->size)
1732 #if DEBUG_CONNECTIONS
1733 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1734 "Connection %X: Message with %u bytes sent, removing message from queue\n",
1738 /* Calling transmit continuation */
1739 if (NULL != ps->pending_msgs_tail->transmit_cont)
1740 msg->transmit_cont (ps->pending_msgs_tail->transmit_cont_cls,
1741 &(ps->peercontext)->identity,
1743 ps->queue_length_cur -= msg->size;
1744 remove_http_message(ps, msg);
1751 curl_receive_mst_cb (void *cls,
1753 const struct GNUNET_MessageHeader *message)
1755 struct Session *ps = cls;
1756 struct GNUNET_TIME_Relative delay;
1757 GNUNET_assert(ps != NULL);
1759 struct HTTP_PeerContext *pc = ps->peercontext;
1760 GNUNET_assert(pc != NULL);
1762 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1763 "Connection %X: Forwarding message to transport service, type %u and size %u from `%s' (`%s')\n",
1765 ntohs(message->type),
1766 ntohs(message->size),
1767 GNUNET_i2s(&(pc->identity)),
1768 http_plugin_address_to_string(NULL,ps->addr,ps->addrlen));
1770 struct GNUNET_TRANSPORT_ATS_Information distance[2];
1771 distance[0].type = htonl (GNUNET_TRANSPORT_ATS_QUALITY_NET_DISTANCE);
1772 distance[0].value = htonl (1);
1773 distance[1].type = htonl (GNUNET_TRANSPORT_ATS_ARRAY_TERMINATOR);
1774 distance[1].value = htonl (0);
1776 delay = pc->plugin->env->receive (pc->plugin->env->cls,
1779 (const struct GNUNET_TRANSPORT_ATS_Information *) &distance, 2,
1784 if (pc->reset_task != GNUNET_SCHEDULER_NO_TASK)
1785 GNUNET_SCHEDULER_cancel (pc->reset_task);
1787 if (delay.rel_value > 0)
1790 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1791 "Connection %X: Inbound quota management: delay next read for %llu ms\n",
1792 ps, delay.rel_value);
1794 pc->reset_task = GNUNET_SCHEDULER_add_delayed (delay, &reset_inbound_quota_delay, pc);
1800 * Callback method used with libcurl
1801 * Method is called when libcurl needs to write data during sending
1802 * @param stream pointer where to write data
1803 * @param size size of an individual element
1804 * @param nmemb count of elements that can be written to the buffer
1805 * @param ptr destination pointer, passed to the libcurl handle
1806 * @return bytes read from stream
1809 curl_receive_cb( void *stream, size_t size, size_t nmemb, void *ptr)
1811 struct Session * ps = ptr;
1813 if (ps->peercontext->delay.rel_value > 0)
1816 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1817 "Connection %X: no inbound bandwidth available! Next read was delayed for %llu ms\n",
1818 ps, ps->peercontext->delay.rel_value);
1822 #if DEBUG_CONNECTIONS
1823 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1824 "Connection %X: %u bytes received\n",
1827 GNUNET_SERVER_mst_receive(ps->msgtok, ps,
1829 GNUNET_NO, GNUNET_NO);
1830 return (size * nmemb);
1835 curl_handle_finished (struct Plugin *plugin)
1837 struct Session *ps = NULL;
1838 struct HTTP_PeerContext *pc = NULL;
1839 struct CURLMsg *msg;
1840 struct HTTP_Message * cur_msg = NULL;
1847 msg = curl_multi_info_read (plugin->multi_handle, &msgs_in_queue);
1848 if ((msgs_in_queue == 0) || (msg == NULL))
1850 /* get session for affected curl handle */
1851 GNUNET_assert ( msg->easy_handle != NULL );
1852 curl_easy_getinfo(msg->easy_handle, CURLINFO_PRIVATE, &tmp);
1853 ps = (struct Session *) tmp;
1854 GNUNET_assert ( ps != NULL );
1855 pc = ps->peercontext;
1856 GNUNET_assert ( pc != NULL );
1860 if ( (msg->data.result != CURLE_OK) &&
1861 (msg->data.result != CURLE_GOT_NOTHING) )
1863 /* sending msg failed*/
1864 if (msg->easy_handle == ps->send_endpoint)
1866 #if DEBUG_CONNECTIONS
1867 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
1868 _("Connection %X: HTTP PUT to peer `%s' (`%s') failed: `%s' `%s'\n"),
1870 GNUNET_i2s(&pc->identity),
1871 http_plugin_address_to_string(NULL, ps->addr, ps->addrlen),
1872 "curl_multi_perform",
1873 curl_easy_strerror (msg->data.result));
1875 ps->send_connected = GNUNET_NO;
1876 ps->send_active = GNUNET_NO;
1877 curl_multi_remove_handle(plugin->multi_handle,ps->send_endpoint);
1878 //curl_easy_cleanup(ps->send_endpoint);
1879 //ps->send_endpoint=NULL;
1880 while (ps->pending_msgs_tail != NULL)
1882 cur_msg = ps->pending_msgs_tail;
1883 if ( NULL != cur_msg->transmit_cont)
1884 cur_msg->transmit_cont (cur_msg->transmit_cont_cls,&pc->identity,GNUNET_SYSERR);
1885 ps->queue_length_cur -= cur_msg->size;
1886 remove_http_message(ps,cur_msg);
1889 /* GET connection failed */
1890 if (msg->easy_handle == ps->recv_endpoint)
1892 #if DEBUG_CONNECTIONS
1893 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
1894 _("Connection %X: HTTP GET to peer `%s' (`%s') failed: `%s' `%s'\n"),
1896 GNUNET_i2s(&pc->identity),
1897 http_plugin_address_to_string(NULL, ps->addr, ps->addrlen),
1898 "curl_multi_perform",
1899 curl_easy_strerror (msg->data.result));
1901 ps->recv_connected = GNUNET_NO;
1902 ps->recv_active = GNUNET_NO;
1903 curl_multi_remove_handle(plugin->multi_handle,ps->recv_endpoint);
1904 //curl_easy_cleanup(ps->recv_endpoint);
1905 //ps->recv_endpoint=NULL;
1910 if (msg->easy_handle == ps->send_endpoint)
1912 GNUNET_assert (CURLE_OK == curl_easy_getinfo(msg->easy_handle, CURLINFO_RESPONSE_CODE, &http_result));
1913 #if DEBUG_CONNECTIONS
1914 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1915 "Connection %X: HTTP PUT connection to peer `%s' (`%s') was closed with HTTP code %u\n",
1917 GNUNET_i2s(&pc->identity),
1918 http_plugin_address_to_string(NULL, ps->addr, ps->addrlen),
1921 /* Calling transmit continuation */
1922 while (ps->pending_msgs_tail != NULL)
1924 cur_msg = ps->pending_msgs_tail;
1925 if ( NULL != cur_msg->transmit_cont)
1927 /* HTTP 1xx : Last message before here was informational */
1928 if ((http_result >=100) && (http_result < 200))
1929 cur_msg->transmit_cont (cur_msg->transmit_cont_cls,&pc->identity,GNUNET_OK);
1930 /* HTTP 2xx: successful operations */
1931 if ((http_result >=200) && (http_result < 300))
1932 cur_msg->transmit_cont (cur_msg->transmit_cont_cls,&pc->identity,GNUNET_OK);
1933 /* HTTP 3xx..5xx: error */
1934 if ((http_result >=300) && (http_result < 600))
1935 cur_msg->transmit_cont (cur_msg->transmit_cont_cls,&pc->identity,GNUNET_SYSERR);
1937 ps->queue_length_cur -= cur_msg->size;
1938 remove_http_message(ps,cur_msg);
1941 ps->send_connected = GNUNET_NO;
1942 ps->send_active = GNUNET_NO;
1943 curl_multi_remove_handle(plugin->multi_handle,ps->send_endpoint);
1944 //curl_easy_cleanup(ps->send_endpoint);
1945 //ps->send_endpoint =NULL;
1947 if (msg->easy_handle == ps->recv_endpoint)
1949 #if DEBUG_CONNECTIONS
1950 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1951 "Connection %X: HTTP GET connection to peer `%s' (`%s') was closed with HTTP code %u\n",
1953 GNUNET_i2s(&pc->identity),
1954 http_plugin_address_to_string(NULL, ps->addr, ps->addrlen),
1957 ps->recv_connected = GNUNET_NO;
1958 ps->recv_active = GNUNET_NO;
1959 curl_multi_remove_handle(plugin->multi_handle,ps->recv_endpoint);
1960 //curl_easy_cleanup(ps->recv_endpoint);
1961 //ps->recv_endpoint=NULL;
1964 if ((ps->recv_connected == GNUNET_NO) && (ps->send_connected == GNUNET_NO))
1965 remove_session (pc, ps, GNUNET_YES, GNUNET_SYSERR);
1971 while ( (msgs_in_queue > 0) );
1976 * Task performing curl operations
1977 * @param cls plugin as closure
1978 * @param tc gnunet scheduler task context
1980 static void curl_perform (void *cls,
1981 const struct GNUNET_SCHEDULER_TaskContext *tc)
1983 struct Plugin *plugin = cls;
1984 static unsigned int handles_last_run;
1988 GNUNET_assert(cls !=NULL);
1990 plugin->http_curl_task = GNUNET_SCHEDULER_NO_TASK;
1991 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
1996 mret = curl_multi_perform (plugin->multi_handle, &running);
1997 if ((running < handles_last_run) && (running>0))
1998 curl_handle_finished(plugin);
1999 handles_last_run = running;
2001 while (mret == CURLM_CALL_MULTI_PERFORM);
2002 curl_schedule(plugin);
2007 * Function setting up file descriptors and scheduling task to run
2009 * @param plugin plugin as closure
2010 * @return GNUNET_SYSERR for hard failure, GNUNET_OK for ok
2013 curl_schedule(struct Plugin *plugin)
2019 struct GNUNET_NETWORK_FDSet *grs;
2020 struct GNUNET_NETWORK_FDSet *gws;
2024 /* Cancel previous scheduled task */
2025 if (plugin->http_curl_task != GNUNET_SCHEDULER_NO_TASK)
2027 GNUNET_SCHEDULER_cancel(plugin->http_curl_task);
2028 plugin->http_curl_task = GNUNET_SCHEDULER_NO_TASK;
2035 mret = curl_multi_fdset (plugin->multi_handle, &rs, &ws, &es, &max);
2036 if (mret != CURLM_OK)
2038 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2039 _("%s failed at %s:%d: `%s'\n"),
2040 "curl_multi_fdset", __FILE__, __LINE__,
2041 curl_multi_strerror (mret));
2042 return GNUNET_SYSERR;
2044 mret = curl_multi_timeout (plugin->multi_handle, &to);
2045 if (mret != CURLM_OK)
2047 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2048 _("%s failed at %s:%d: `%s'\n"),
2049 "curl_multi_timeout", __FILE__, __LINE__,
2050 curl_multi_strerror (mret));
2051 return GNUNET_SYSERR;
2054 grs = GNUNET_NETWORK_fdset_create ();
2055 gws = GNUNET_NETWORK_fdset_create ();
2056 GNUNET_NETWORK_fdset_copy_native (grs, &rs, max + 1);
2057 GNUNET_NETWORK_fdset_copy_native (gws, &ws, max + 1);
2058 plugin->http_curl_task = GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
2059 GNUNET_SCHEDULER_NO_TASK,
2061 ? GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 5)
2062 : GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_MILLISECONDS, to),
2067 GNUNET_NETWORK_fdset_destroy (gws);
2068 GNUNET_NETWORK_fdset_destroy (grs);
2075 * Function to log curl debug messages with GNUNET_log
2076 * @param curl handle
2077 * @param type curl_infotype
2080 * @param cls closure
2084 curl_logger (CURL * curl,
2086 char * data, size_t size,
2089 if (type == CURLINFO_TEXT)
2092 memcpy(text,data,size);
2093 if (text[size-1] == '\n')
2098 text[size+1] = '\0';
2100 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2101 "CURL: Connection %X - %s",
2111 * Function setting up curl handle and selecting message to send
2113 * @param plugin plugin
2115 * @return GNUNET_SYSERR on failure, GNUNET_NO if connecting, GNUNET_YES if ok
2118 send_check_connections (struct Plugin *plugin,
2122 struct GNUNET_TIME_Relative timeout = GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT;
2124 if (ps->direction == OUTBOUND)
2126 /* RECV DIRECTION */
2127 /* Check if session is connected to receive data, otherwise connect to peer */
2128 if (ps->recv_connected == GNUNET_NO)
2130 int fresh = GNUNET_NO;
2131 if (ps->recv_endpoint == NULL)
2134 ps->recv_endpoint = curl_easy_init();
2137 curl_easy_setopt(ps->recv_endpoint, CURLOPT_VERBOSE, 1L);
2138 curl_easy_setopt(ps->recv_endpoint, CURLOPT_DEBUGFUNCTION , &curl_logger);
2139 curl_easy_setopt(ps->recv_endpoint, CURLOPT_DEBUGDATA , ps->recv_endpoint);
2142 curl_easy_setopt (ps->recv_endpoint, CURLOPT_SSLVERSION, CURL_SSLVERSION_TLSv1);
2143 curl_easy_setopt(ps->recv_endpoint, CURLOPT_SSL_VERIFYPEER, 0);
2144 curl_easy_setopt(ps->recv_endpoint, CURLOPT_SSL_VERIFYHOST, 0);
2146 curl_easy_setopt(ps->recv_endpoint, CURLOPT_URL, ps->url);
2147 curl_easy_setopt(ps->recv_endpoint, CURLOPT_HEADERFUNCTION, &curl_get_header_cb);
2148 curl_easy_setopt(ps->recv_endpoint, CURLOPT_WRITEHEADER, ps);
2149 curl_easy_setopt(ps->recv_endpoint, CURLOPT_READFUNCTION, curl_send_cb);
2150 curl_easy_setopt(ps->recv_endpoint, CURLOPT_READDATA, ps);
2151 curl_easy_setopt(ps->recv_endpoint, CURLOPT_WRITEFUNCTION, curl_receive_cb);
2152 curl_easy_setopt(ps->recv_endpoint, CURLOPT_WRITEDATA, ps);
2153 curl_easy_setopt(ps->recv_endpoint, CURLOPT_TIMEOUT, (long) timeout.rel_value);
2154 curl_easy_setopt(ps->recv_endpoint, CURLOPT_PRIVATE, ps);
2155 curl_easy_setopt(ps->recv_endpoint, CURLOPT_CONNECTTIMEOUT, HTTP_CONNECT_TIMEOUT);
2156 curl_easy_setopt(ps->recv_endpoint, CURLOPT_BUFFERSIZE, 2*GNUNET_SERVER_MAX_MESSAGE_SIZE);
2157 #if CURL_TCP_NODELAY
2158 curl_easy_setopt(ps->recv_endpoint, CURLOPT_TCP_NODELAY, 1);
2160 if (fresh==GNUNET_YES)
2162 mret = curl_multi_add_handle(plugin->multi_handle, ps->recv_endpoint);
2163 if (mret != CURLM_OK)
2165 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2166 _("Connection: %X: %s failed at %s:%d: `%s'\n"),
2168 "curl_multi_add_handle", __FILE__, __LINE__,
2169 curl_multi_strerror (mret));
2170 return GNUNET_SYSERR;
2173 if (plugin->http_curl_task != GNUNET_SCHEDULER_NO_TASK)
2175 GNUNET_SCHEDULER_cancel(plugin->http_curl_task);
2176 plugin->http_curl_task = GNUNET_SCHEDULER_NO_TASK;
2178 plugin->http_curl_task = GNUNET_SCHEDULER_add_now (&curl_perform, plugin);
2181 /* waiting for receive direction */
2182 if (ps->recv_connected==GNUNET_NO)
2185 /* SEND DIRECTION */
2186 /* Check if session is connected to send data, otherwise connect to peer */
2187 if ((ps->send_connected == GNUNET_YES) && (ps->send_endpoint!= NULL))
2189 if (ps->send_active == GNUNET_YES)
2191 #if DEBUG_CONNECTIONS
2192 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2193 "Connection %X: outbound active, enqueueing message\n",
2198 if (ps->send_active == GNUNET_NO)
2200 #if DEBUG_CONNECTIONS
2201 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2202 "Connection %X: outbound paused, unpausing existing connection and enqueueing message\n",
2205 if (CURLE_OK == curl_easy_pause(ps->send_endpoint,CURLPAUSE_CONT))
2207 ps->send_active=GNUNET_YES;
2208 if (plugin->http_curl_task != GNUNET_SCHEDULER_NO_TASK)
2210 GNUNET_SCHEDULER_cancel(plugin->http_curl_task);
2211 plugin->http_curl_task = GNUNET_SCHEDULER_NO_TASK;
2213 plugin->http_curl_task = GNUNET_SCHEDULER_add_now (&curl_perform, plugin);
2217 return GNUNET_SYSERR;
2220 /* not connected, initiate connection */
2221 if (ps->send_connected==GNUNET_NO)
2223 int fresh = GNUNET_NO;
2224 if (NULL == ps->send_endpoint)
2226 ps->send_endpoint = curl_easy_init();
2229 GNUNET_assert (ps->send_endpoint != NULL);
2230 GNUNET_assert (NULL != ps->pending_msgs_tail);
2231 #if DEBUG_CONNECTIONS
2232 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2233 "Connection %X: outbound not connected, initiating connection\n",
2236 ps->send_active = GNUNET_NO;
2239 curl_easy_setopt(ps->send_endpoint, CURLOPT_VERBOSE, 1L);
2240 curl_easy_setopt(ps->send_endpoint, CURLOPT_DEBUGFUNCTION , &curl_logger);
2241 curl_easy_setopt(ps->send_endpoint, CURLOPT_DEBUGDATA , ps->send_endpoint);
2244 curl_easy_setopt (ps->send_endpoint, CURLOPT_SSLVERSION, CURL_SSLVERSION_TLSv1);
2245 curl_easy_setopt(ps->send_endpoint, CURLOPT_SSL_VERIFYPEER, 0);
2246 curl_easy_setopt(ps->send_endpoint, CURLOPT_SSL_VERIFYHOST, 0);
2248 curl_easy_setopt(ps->send_endpoint, CURLOPT_URL, ps->url);
2249 curl_easy_setopt(ps->send_endpoint, CURLOPT_PUT, 1L);
2250 curl_easy_setopt(ps->send_endpoint, CURLOPT_HEADERFUNCTION, &curl_put_header_cb);
2251 curl_easy_setopt(ps->send_endpoint, CURLOPT_WRITEHEADER, ps);
2252 curl_easy_setopt(ps->send_endpoint, CURLOPT_READFUNCTION, curl_send_cb);
2253 curl_easy_setopt(ps->send_endpoint, CURLOPT_READDATA, ps);
2254 curl_easy_setopt(ps->send_endpoint, CURLOPT_WRITEFUNCTION, curl_receive_cb);
2255 curl_easy_setopt(ps->send_endpoint, CURLOPT_READDATA, ps);
2256 curl_easy_setopt(ps->send_endpoint, CURLOPT_TIMEOUT, (long) timeout.rel_value);
2257 curl_easy_setopt(ps->send_endpoint, CURLOPT_PRIVATE, ps);
2258 curl_easy_setopt(ps->send_endpoint, CURLOPT_CONNECTTIMEOUT, HTTP_CONNECT_TIMEOUT);
2259 curl_easy_setopt(ps->send_endpoint, CURLOPT_BUFFERSIZE, 2 * GNUNET_SERVER_MAX_MESSAGE_SIZE);
2260 #if CURL_TCP_NODELAY
2261 curl_easy_setopt(ps->send_endpoint, CURLOPT_TCP_NODELAY, 1);
2263 if (fresh==GNUNET_YES)
2265 mret = curl_multi_add_handle(plugin->multi_handle, ps->send_endpoint);
2266 if (mret != CURLM_OK)
2268 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
2269 _("Connection: %X: %s failed at %s:%d: `%s'\n"),
2271 "curl_multi_add_handle", __FILE__, __LINE__,
2272 curl_multi_strerror (mret));
2273 return GNUNET_SYSERR;
2277 if (plugin->http_curl_task != GNUNET_SCHEDULER_NO_TASK)
2279 GNUNET_SCHEDULER_cancel(plugin->http_curl_task);
2280 plugin->http_curl_task = GNUNET_SCHEDULER_NO_TASK;
2282 plugin->http_curl_task = GNUNET_SCHEDULER_add_now (&curl_perform, plugin);
2285 if (ps->direction == INBOUND)
2287 GNUNET_assert (NULL != ps->pending_msgs_tail);
2288 if ((ps->recv_connected==GNUNET_YES) && (ps->send_connected==GNUNET_YES) &&
2289 (ps->recv_force_disconnect==GNUNET_NO) && (ps->recv_force_disconnect==GNUNET_NO))
2292 return GNUNET_SYSERR;
2297 * select best session to transmit data to peer
2299 * @param pc peer context of target peer
2300 * @param addr address of target peer
2301 * @param addrlen address length
2302 * @param force_address does transport service enforce address?
2303 * @param session session passed by transport service
2304 * @return selected session
2307 static struct Session *
2308 send_select_session (struct HTTP_PeerContext *pc,
2309 const void * addr, size_t addrlen,
2311 struct Session * session)
2313 struct Session * tmp = NULL;
2314 int addr_given = GNUNET_NO;
2316 if ((addr!=NULL) && (addrlen>0))
2317 addr_given = GNUNET_YES;
2319 if (force_address == GNUNET_YES)
2321 /* check session given as argument */
2322 if ((session != NULL) && (addr_given == GNUNET_YES))
2324 if (0 == memcmp(session->addr, addr, addrlen))
2326 /* connection can not be used, since it is disconnected */
2327 if ( (session->recv_force_disconnect==GNUNET_NO) &&
2328 (session->send_force_disconnect==GNUNET_NO) )
2330 #if DEBUG_SESSION_SELECTION
2331 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2332 "Session %X selected: Using session passed by transport to send to forced address \n",
2339 /* check last session used */
2340 if ((pc->last_session != NULL)&& (addr_given == GNUNET_YES))
2342 if (0 == memcmp(pc->last_session->addr, addr, addrlen))
2344 /* connection can not be used, since it is disconnected */
2345 if ( (pc->last_session->recv_force_disconnect==GNUNET_NO) &&
2346 (pc->last_session->send_force_disconnect==GNUNET_NO) )
2348 #if DEBUG_SESSION_SELECTION
2349 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2350 "Session %X selected: Using last session used to send to forced address \n",
2353 return pc->last_session;
2357 /* find session in existing sessions */
2359 while ((tmp!=NULL) && (addr_given == GNUNET_YES))
2361 if (0 == memcmp(tmp->addr, addr, addrlen))
2363 /* connection can not be used, since it is disconnected */
2364 if ( (tmp->recv_force_disconnect==GNUNET_NO) &&
2365 (tmp->send_force_disconnect==GNUNET_NO) )
2367 #if DEBUG_SESSION_SELECTION
2368 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2369 "Session %X selected: Using existing session to send to forced address \n",
2377 /* no session to use */
2380 if ((force_address == GNUNET_NO) || (force_address == GNUNET_SYSERR))
2382 /* check session given as argument */
2383 if (session != NULL)
2385 /* connection can not be used, since it is disconnected */
2386 if ( (session->recv_force_disconnect==GNUNET_NO) &&
2387 (session->send_force_disconnect==GNUNET_NO) )
2389 #if DEBUG_SESSION_SELECTION
2390 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2391 "Session %X selected: Using session passed by transport to send not-forced address\n",
2397 /* check last session used */
2398 if (pc->last_session != NULL)
2400 /* connection can not be used, since it is disconnected */
2401 if ( (pc->last_session->recv_force_disconnect==GNUNET_NO) &&
2402 (pc->last_session->send_force_disconnect==GNUNET_NO) )
2404 #if DEBUG_SESSION_SELECTION
2405 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2406 "Session %X selected: Using last session to send to not-forced address\n",
2409 return pc->last_session;
2412 /* find session in existing sessions */
2416 /* connection can not be used, since it is disconnected */
2417 if ( (tmp->recv_force_disconnect==GNUNET_NO) &&
2418 (tmp->send_force_disconnect==GNUNET_NO) )
2420 #if DEBUG_SESSION_SELECTION
2421 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2422 "Session %X selected: Using existing session to send to not-forced address\n",
2436 * Function that can be used by the transport service to transmit
2437 * a message using the plugin. Note that in the case of a
2438 * peer disconnecting, the continuation MUST be called
2439 * prior to the disconnect notification itself. This function
2440 * will be called with this peer's HELLO message to initiate
2441 * a fresh connection to another peer.
2443 * @param cls closure
2444 * @param target who should receive this message
2445 * @param msgbuf the message to transmit
2446 * @param msgbuf_size number of bytes in 'msgbuf'
2447 * @param priority how important is the message (most plugins will
2448 * ignore message priority and just FIFO)
2449 * @param to how long to wait at most for the transmission (does not
2450 * require plugins to discard the message after the timeout,
2451 * just advisory for the desired delay; most plugins will ignore
2453 * @param session which session must be used (or NULL for "any")
2454 * @param addr the address to use (can be NULL if the plugin
2455 * is "on its own" (i.e. re-use existing TCP connection))
2456 * @param addrlen length of the address in bytes
2457 * @param force_address GNUNET_YES if the plugin MUST use the given address,
2458 * GNUNET_NO means the plugin may use any other address and
2459 * GNUNET_SYSERR means that only reliable existing
2460 * bi-directional connections should be used (regardless
2462 * @param cont continuation to call once the message has
2463 * been transmitted (or if the transport is ready
2464 * for the next transmission call; or if the
2465 * peer disconnected...); can be NULL
2466 * @param cont_cls closure for cont
2467 * @return number of bytes used (on the physical network, with overheads);
2468 * -1 on hard errors (i.e. address invalid); 0 is a legal value
2469 * and does NOT mean that the message was not transmitted (DV)
2472 http_plugin_send (void *cls,
2473 const struct GNUNET_PeerIdentity *target,
2476 unsigned int priority,
2477 struct GNUNET_TIME_Relative to,
2478 struct Session *session,
2482 GNUNET_TRANSPORT_TransmitContinuation cont,
2485 struct Plugin *plugin = cls;
2486 struct HTTP_Message *msg;
2487 struct HTTP_PeerContext * pc;
2488 struct Session * ps = NULL;
2490 GNUNET_assert(cls !=NULL);
2495 if (force_address == GNUNET_YES)
2496 GNUNET_asprintf(&force, "forced addr.");
2497 else if (force_address == GNUNET_NO)
2498 GNUNET_asprintf(&force, "any addr.");
2499 else if (force_address == GNUNET_SYSERR)
2500 GNUNET_asprintf(&force,"reliable bi-direc. address addr.");
2503 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2504 "Transport tells me to send %u bytes to `%s' using %s (%s) and session: %X\n",
2508 http_plugin_address_to_string(NULL, addr, addrlen),
2513 pc = GNUNET_CONTAINER_multihashmap_get (plugin->peers, &target->hashPubKey);
2517 pc = GNUNET_malloc(sizeof (struct HTTP_PeerContext));
2518 pc->plugin = plugin;
2519 pc->session_id_counter=1;
2520 pc->last_session = NULL;
2521 memcpy(&pc->identity, target, sizeof(struct GNUNET_PeerIdentity));
2522 GNUNET_CONTAINER_multihashmap_put (plugin->peers,
2523 &pc->identity.hashPubKey,
2525 GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
2526 GNUNET_STATISTICS_update (plugin->env->stats,
2527 gettext_noop ("# HTTP peers active"),
2531 ps = send_select_session (pc, addr, addrlen, force_address, session);
2532 /* session not existing, but address forced -> creating new session */
2535 if ((addr!=NULL) && (addrlen!=0))
2537 ps = GNUNET_malloc(sizeof (struct Session));
2538 #if DEBUG_SESSION_SELECTION
2539 if (force_address == GNUNET_YES)
2540 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2541 "No existing connection & forced address: creating new session %X to peer %s\n",
2542 ps, GNUNET_i2s(target));
2543 if (force_address != GNUNET_YES)
2544 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2545 "No existing connection: creating new session %X to peer %s\n",
2546 ps, GNUNET_i2s(target));
2548 ps->addr = GNUNET_malloc(addrlen);
2549 memcpy(ps->addr,addr,addrlen);
2550 ps->addrlen = addrlen;
2551 ps->direction=OUTBOUND;
2552 ps->recv_connected = GNUNET_NO;
2553 ps->recv_force_disconnect = GNUNET_NO;
2554 ps->send_connected = GNUNET_NO;
2555 ps->send_force_disconnect = GNUNET_NO;
2556 ps->pending_msgs_head = NULL;
2557 ps->pending_msgs_tail = NULL;
2559 ps->session_id = pc->session_id_counter;
2560 ps->queue_length_cur = 0;
2561 ps->queue_length_max = GNUNET_SERVER_MAX_MESSAGE_SIZE;
2562 pc->session_id_counter++;
2563 ps->url = create_url (plugin, ps->addr, ps->addrlen, ps->session_id);
2564 if (ps->msgtok == NULL)
2565 ps->msgtok = GNUNET_SERVER_mst_create (&curl_receive_mst_cb, ps);
2566 GNUNET_CONTAINER_DLL_insert(pc->head,pc->tail,ps);
2567 GNUNET_STATISTICS_update (plugin->env->stats,
2568 gettext_noop ("# HTTP outbound sessions for peers active"),
2575 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2576 "No existing session found & and no address given: no way to send this message to peer `%s'!\n",
2577 GNUNET_i2s(target));
2579 return GNUNET_SYSERR;
2583 if (msgbuf_size >= (ps->queue_length_max - ps->queue_length_cur))
2585 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2586 "Queue %X full: %u bytes in queue available, message with %u is too big\n",
2588 (ps->queue_length_max - ps->queue_length_cur),
2590 //return GNUNET_SYSERR;
2594 msg = GNUNET_malloc (sizeof (struct HTTP_Message) + msgbuf_size);
2596 msg->size = msgbuf_size;
2598 msg->buf = (char *) &msg[1];
2599 msg->transmit_cont = cont;
2600 msg->transmit_cont_cls = cont_cls;
2601 memcpy (msg->buf,msgbuf, msgbuf_size);
2602 GNUNET_CONTAINER_DLL_insert (ps->pending_msgs_head,
2603 ps->pending_msgs_tail,
2605 ps->queue_length_cur += msgbuf_size;
2606 if (send_check_connections (plugin, ps) == GNUNET_SYSERR)
2607 return GNUNET_SYSERR;
2608 if (force_address != GNUNET_YES)
2609 pc->last_session = ps;
2610 if (pc->last_session==NULL)
2611 pc->last_session = ps;
2617 * Function that can be used to force the plugin to disconnect
2618 * from the given peer and cancel all previous transmissions
2619 * (and their continuationc).
2621 * @param cls closure
2622 * @param target peer from which to disconnect
2625 http_plugin_disconnect (void *cls,
2626 const struct GNUNET_PeerIdentity *target)
2628 struct Plugin *plugin = cls;
2629 struct HTTP_PeerContext *pc = NULL;
2630 struct Session *ps = NULL;
2632 pc = GNUNET_CONTAINER_multihashmap_get (plugin->peers, &target->hashPubKey);
2638 /* Telling transport that session is getting disconnected */
2639 plugin->env->session_end(plugin, target, ps);
2640 if (ps->direction==OUTBOUND)
2642 if (ps->send_endpoint!=NULL)
2644 //GNUNET_assert(CURLM_OK == curl_multi_remove_handle(plugin->multi_handle,ps->send_endpoint));
2645 //curl_easy_cleanup(ps->send_endpoint);
2646 //ps->send_endpoint=NULL;
2647 ps->send_force_disconnect = GNUNET_YES;
2649 if (ps->recv_endpoint!=NULL)
2651 //GNUNET_assert(CURLM_OK == curl_multi_remove_handle(plugin->multi_handle,ps->recv_endpoint));
2652 //curl_easy_cleanup(ps->recv_endpoint);
2653 //ps->recv_endpoint=NULL;
2654 ps->recv_force_disconnect = GNUNET_YES;
2657 if (ps->direction==INBOUND)
2659 ps->recv_force_disconnect = GNUNET_YES;
2660 ps->send_force_disconnect = GNUNET_YES;
2662 while (ps->pending_msgs_head!=NULL)
2663 remove_http_message(ps, ps->pending_msgs_head);
2664 ps->recv_active = GNUNET_NO;
2665 ps->send_active = GNUNET_NO;
2672 * Convert the transports address to a nice, human-readable
2675 * @param cls closure
2676 * @param type name of the transport that generated the address
2677 * @param addr one of the addresses of the host, NULL for the last address
2678 * the specific address format depends on the transport
2679 * @param addrlen length of the address
2680 * @param numeric should (IP) addresses be displayed in numeric form?
2681 * @param timeout after how long should we give up?
2682 * @param asc function to call on each string
2683 * @param asc_cls closure for asc
2686 http_plugin_address_pretty_printer (void *cls,
2691 struct GNUNET_TIME_Relative timeout,
2692 GNUNET_TRANSPORT_AddressStringCallback
2695 const struct IPv4HttpAddress *t4;
2696 const struct IPv6HttpAddress *t6;
2697 struct sockaddr_in a4;
2698 struct sockaddr_in6 a6;
2704 GNUNET_assert(cls !=NULL);
2705 if (addrlen == sizeof (struct IPv6HttpAddress))
2707 address = GNUNET_malloc (INET6_ADDRSTRLEN);
2709 a6.sin6_addr = t6->ipv6_addr;
2710 inet_ntop(AF_INET6, &(a6.sin6_addr),address,INET6_ADDRSTRLEN);
2711 port = ntohs(t6->u6_port);
2713 else if (addrlen == sizeof (struct IPv4HttpAddress))
2715 address = GNUNET_malloc (INET_ADDRSTRLEN);
2717 a4.sin_addr.s_addr = t4->ipv4_addr;
2718 inet_ntop(AF_INET, &(a4.sin_addr),address,INET_ADDRSTRLEN);
2719 port = ntohs(t4->u_port);
2723 /* invalid address */
2724 GNUNET_break_op (0);
2725 asc (asc_cls, NULL);
2728 res = GNUNET_asprintf(&ret,"%s://%s:%u/", PROTOCOL_PREFIX, address, port);
2729 GNUNET_free (address);
2730 GNUNET_assert(res != 0);
2732 GNUNET_free_non_null (ret);
2738 * Another peer has suggested an address for this
2739 * peer and transport plugin. Check that this could be a valid
2740 * address. If so, consider adding it to the list
2743 * @param cls closure
2744 * @param addr pointer to the address
2745 * @param addrlen length of addr
2746 * @return GNUNET_OK if this is a plausible address for this peer
2750 http_plugin_address_suggested (void *cls,
2751 const void *addr, size_t addrlen)
2753 struct Plugin *plugin = cls;
2754 struct IPv4HttpAddress *v4;
2755 struct IPv6HttpAddress *v6;
2756 struct IPv4HttpAddress *tv4 = plugin->ipv4_addr_head;
2757 struct IPv6HttpAddress *tv6 = plugin->ipv6_addr_head;
2759 GNUNET_assert(cls !=NULL);
2760 if ((addrlen != sizeof (struct IPv4HttpAddress)) &&
2761 (addrlen != sizeof (struct IPv6HttpAddress)))
2762 return GNUNET_SYSERR;
2763 if (addrlen == sizeof (struct IPv4HttpAddress))
2765 v4 = (struct IPv4HttpAddress *) addr;
2766 if (plugin->bind4_address!=NULL)
2768 if (0 == memcmp (&plugin->bind4_address->sin_addr, &v4->ipv4_addr, sizeof(uint32_t)))
2771 return GNUNET_SYSERR;
2775 if (0==memcmp (&tv4->ipv4_addr, &v4->ipv4_addr, sizeof(uint32_t)))
2782 return GNUNET_SYSERR;
2784 if (addrlen == sizeof (struct IPv6HttpAddress))
2786 v6 = (struct IPv6HttpAddress *) addr;
2787 if (plugin->bind6_address!=NULL)
2789 if (0 == memcmp (&plugin->bind6_address->sin6_addr, &v6->ipv6_addr, sizeof(struct in6_addr)))
2792 return GNUNET_SYSERR;
2796 if (0 == memcmp (&tv6->ipv6_addr, &v6->ipv6_addr, sizeof(struct in6_addr)))
2803 return GNUNET_SYSERR;
2805 return GNUNET_SYSERR;
2810 * Function called for a quick conversion of the binary address to
2811 * a numeric address. Note that the caller must not free the
2812 * address and that the next call to this function is allowed
2813 * to override the address again.
2815 * @param cls closure
2816 * @param addr binary address
2817 * @param addrlen length of the address
2818 * @return string representing the same address
2821 http_plugin_address_to_string (void *cls,
2825 const struct IPv4HttpAddress *t4;
2826 const struct IPv6HttpAddress *t6;
2827 struct sockaddr_in a4;
2828 struct sockaddr_in6 a6;
2834 if (addrlen == sizeof (struct IPv6HttpAddress))
2836 address = GNUNET_malloc (INET6_ADDRSTRLEN);
2838 a6.sin6_addr = t6->ipv6_addr;
2839 inet_ntop(AF_INET6, &(a6.sin6_addr),address,INET6_ADDRSTRLEN);
2840 port = ntohs(t6->u6_port);
2842 else if (addrlen == sizeof (struct IPv4HttpAddress))
2844 address = GNUNET_malloc (INET_ADDRSTRLEN);
2846 a4.sin_addr.s_addr = t4->ipv4_addr;
2847 inet_ntop(AF_INET, &(a4.sin_addr),address,INET_ADDRSTRLEN);
2848 port = ntohs(t4->u_port);
2852 /* invalid address */
2855 res = GNUNET_asprintf(&ret,"%s:%u",address,port);
2856 GNUNET_free (address);
2857 GNUNET_assert(res != 0);
2863 * Exit point from the plugin.
2866 LIBGNUNET_PLUGIN_TRANSPORT_DONE (void *cls)
2868 struct GNUNET_TRANSPORT_PluginFunctions *api = cls;
2869 struct Plugin *plugin = api->cls;
2871 struct IPv4HttpAddress * ipv4addr;
2872 struct IPv6HttpAddress * ipv6addr;
2873 GNUNET_assert(cls !=NULL);
2875 if (plugin->http_server_daemon_v4 != NULL)
2877 MHD_stop_daemon (plugin->http_server_daemon_v4);
2878 plugin->http_server_daemon_v4 = NULL;
2880 if (plugin->http_server_daemon_v6 != NULL)
2882 MHD_stop_daemon (plugin->http_server_daemon_v6);
2883 plugin->http_server_daemon_v6 = NULL;
2885 if ( plugin->http_server_task_v4 != GNUNET_SCHEDULER_NO_TASK)
2887 GNUNET_SCHEDULER_cancel(plugin->http_server_task_v4);
2888 plugin->http_server_task_v4 = GNUNET_SCHEDULER_NO_TASK;
2890 if ( plugin->http_server_task_v6 != GNUNET_SCHEDULER_NO_TASK)
2892 GNUNET_SCHEDULER_cancel(plugin->http_server_task_v6);
2893 plugin->http_server_task_v6 = GNUNET_SCHEDULER_NO_TASK;
2896 while (plugin->ipv4_addr_head!=NULL)
2898 ipv4addr = plugin->ipv4_addr_head;
2899 GNUNET_CONTAINER_DLL_remove(plugin->ipv4_addr_head,plugin->ipv4_addr_tail,ipv4addr);
2900 GNUNET_free(ipv4addr);
2903 while (plugin->ipv6_addr_head!=NULL)
2905 ipv6addr = plugin->ipv6_addr_head;
2906 GNUNET_CONTAINER_DLL_remove(plugin->ipv6_addr_head,plugin->ipv6_addr_tail,ipv6addr);
2907 GNUNET_free(ipv6addr);
2910 /* free all peer information */
2911 if (plugin->peers!=NULL)
2913 GNUNET_CONTAINER_multihashmap_iterate (plugin->peers,
2914 &remove_peer_context_Iterator,
2916 GNUNET_CONTAINER_multihashmap_destroy (plugin->peers);
2918 if (plugin->multi_handle!=NULL)
2920 mret = curl_multi_cleanup(plugin->multi_handle);
2921 if (CURLM_OK != mret)
2922 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
2923 "curl multihandle clean up failed\n");
2924 plugin->multi_handle = NULL;
2926 curl_global_cleanup();
2928 if ( plugin->http_curl_task != GNUNET_SCHEDULER_NO_TASK)
2930 GNUNET_SCHEDULER_cancel(plugin->http_curl_task);
2931 plugin->http_curl_task = GNUNET_SCHEDULER_NO_TASK;
2934 GNUNET_free_non_null (plugin->bind4_address);
2935 GNUNET_free_non_null (plugin->bind6_address);
2936 GNUNET_free_non_null(plugin->bind_hostname);
2938 GNUNET_free_non_null (plugin->crypto_init);
2939 GNUNET_free_non_null (plugin->cert);
2940 GNUNET_free_non_null (plugin->key);
2942 GNUNET_free (plugin);
2945 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
2946 "Unload %s plugin complete...\n",
2954 load_certificate( const char * file )
2956 struct GNUNET_DISK_FileHandle * gn_file;
2960 if (0!=STAT(file, &fstat))
2962 text = GNUNET_malloc (fstat.st_size+1);
2963 gn_file = GNUNET_DISK_file_open(file, GNUNET_DISK_OPEN_READ, GNUNET_DISK_PERM_USER_READ);
2969 if (GNUNET_SYSERR == GNUNET_DISK_file_read(gn_file, text, fstat.st_size))
2972 GNUNET_DISK_file_close(gn_file);
2975 text[fstat.st_size] = '\0';
2976 GNUNET_DISK_file_close(gn_file);
2983 * Entry point for the plugin.
2986 LIBGNUNET_PLUGIN_TRANSPORT_INIT (void *cls)
2988 struct GNUNET_TRANSPORT_PluginEnvironment *env = cls;
2989 struct Plugin *plugin;
2990 struct GNUNET_TRANSPORT_PluginFunctions *api;
2991 struct GNUNET_TIME_Relative gn_timeout;
2992 long long unsigned int port;
2993 char * component_name;
2995 char * key_file = NULL;
2996 char * cert_file = NULL;
2999 GNUNET_assert(cls !=NULL);
3001 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3002 "Starting %s plugin...\n",
3005 GNUNET_asprintf(&component_name,
3009 plugin = GNUNET_malloc (sizeof (struct Plugin));
3010 plugin->stats = env->stats;
3012 plugin->peers = NULL;
3013 plugin->bind4_address = NULL;
3014 plugin->bind6_address = NULL;
3015 plugin->use_ipv6 = GNUNET_YES;
3016 plugin->use_ipv4 = GNUNET_YES;
3017 plugin->use_localaddresses = GNUNET_NO;
3019 api = GNUNET_malloc (sizeof (struct GNUNET_TRANSPORT_PluginFunctions));
3021 api->send = &http_plugin_send;
3022 api->disconnect = &http_plugin_disconnect;
3023 api->address_pretty_printer = &http_plugin_address_pretty_printer;
3024 api->check_address = &http_plugin_address_suggested;
3025 api->address_to_string = &http_plugin_address_to_string;
3027 /* Hashing our identity to use it in URLs */
3028 GNUNET_CRYPTO_hash_to_enc (&(plugin->env->my_identity->hashPubKey),
3029 &plugin->my_ascii_hash_ident);
3032 if (GNUNET_CONFIGURATION_have_value (env->cfg,
3033 component_name, "USE_IPv6"))
3035 plugin->use_ipv6 = GNUNET_CONFIGURATION_get_value_yesno (env->cfg,
3040 if (GNUNET_CONFIGURATION_have_value (env->cfg,
3041 component_name, "USE_IPv4"))
3043 plugin->use_ipv4 = GNUNET_CONFIGURATION_get_value_yesno (env->cfg,
3044 component_name,"USE_IPv4");
3046 /* use local addresses? */
3048 if (GNUNET_CONFIGURATION_have_value (env->cfg,
3049 component_name, "USE_LOCALADDR"))
3051 plugin->use_localaddresses = GNUNET_CONFIGURATION_get_value_yesno (env->cfg,
3055 /* Reading port number from config file */
3057 GNUNET_CONFIGURATION_get_value_number (env->cfg,
3063 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
3065 _("Require valid port number for transport plugin `%s' in configuration!\n"),
3067 GNUNET_free(component_name);
3068 LIBGNUNET_PLUGIN_TRANSPORT_DONE (api);
3072 /* Reading ipv4 addresse to bind to from config file */
3073 if ( (plugin->use_ipv4==GNUNET_YES) &&
3074 (GNUNET_CONFIGURATION_have_value (env->cfg,
3075 component_name, "BINDTO4")))
3077 GNUNET_break (GNUNET_OK ==
3078 GNUNET_CONFIGURATION_get_value_string (env->cfg,
3081 &plugin->bind_hostname));
3082 plugin->bind4_address = GNUNET_malloc(sizeof(struct sockaddr_in));
3083 plugin->bind4_address->sin_family = AF_INET;
3084 plugin->bind4_address->sin_port = htons (port);
3086 if (plugin->bind_hostname!=NULL)
3088 if (inet_pton(AF_INET,plugin->bind_hostname, &plugin->bind4_address->sin_addr)<=0)
3090 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
3092 _("Misconfigured address to bind to in configuration!\n"));
3093 GNUNET_free(plugin->bind4_address);
3094 GNUNET_free(plugin->bind_hostname);
3095 plugin->bind_hostname = NULL;
3096 plugin->bind4_address = NULL;
3101 /* Reading ipv4 addresse to bind to from config file */
3102 if ( (plugin->use_ipv6==GNUNET_YES) &&
3103 (GNUNET_CONFIGURATION_have_value (env->cfg,
3104 component_name, "BINDTO6")))
3106 if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string (env->cfg,
3109 &plugin->bind_hostname))
3111 plugin->bind6_address = GNUNET_malloc(sizeof(struct sockaddr_in6));
3112 plugin->bind6_address->sin6_family = AF_INET6;
3113 plugin->bind6_address->sin6_port = htons (port);
3114 if (plugin->bind_hostname!=NULL)
3116 if (inet_pton(AF_INET6,plugin->bind_hostname, &plugin->bind6_address->sin6_addr)<=0)
3118 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
3120 _("Misconfigured address to bind to in configuration!\n"));
3121 GNUNET_free(plugin->bind6_address);
3122 GNUNET_free(plugin->bind_hostname);
3123 plugin->bind_hostname = NULL;
3124 plugin->bind6_address = NULL;
3131 /* Reading HTTPS crypto related configuration */
3132 /* Get crypto init string from config */
3133 if (GNUNET_CONFIGURATION_have_value (env->cfg,
3134 "transport-https", "CRYPTO_INIT"))
3136 GNUNET_CONFIGURATION_get_value_string (env->cfg,
3139 &plugin->crypto_init);
3143 GNUNET_asprintf(&plugin->crypto_init,"NORMAL");
3146 /* Get private key file from config */
3147 if (GNUNET_CONFIGURATION_have_value (env->cfg,
3148 "transport-https", "KEY_FILE"))
3150 GNUNET_CONFIGURATION_get_value_string (env->cfg,
3156 GNUNET_asprintf(&key_file,"https.key");
3158 /* Get private key file from config */
3159 if (GNUNET_CONFIGURATION_have_value (env->cfg,"transport-https", "CERT_FILE"))
3161 GNUNET_CONFIGURATION_get_value_string (env->cfg,
3166 if (cert_file==NULL)
3167 GNUNET_asprintf(&cert_file,"https.cert");
3169 /* read key & certificates from file */
3170 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3171 "Loading TLS certificate `%s' `%s'\n",
3172 key_file, cert_file);
3174 plugin->key = load_certificate( key_file );
3175 plugin->cert = load_certificate( cert_file );
3177 if ((plugin->key==NULL) || (plugin->cert==NULL))
3181 GNUNET_asprintf(&cmd,
3182 "gnunet-transport-certificate-creation %s %s",
3183 key_file, cert_file);
3184 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3185 "No usable TLS certificate found, creating certificate \n");
3189 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
3191 _("Could not create a new TLS certificate, shell script `%s' failed!\n"),cmd,
3193 GNUNET_free (key_file);
3194 GNUNET_free (cert_file);
3195 GNUNET_free (component_name);
3196 LIBGNUNET_PLUGIN_TRANSPORT_DONE(api);
3201 plugin->key = load_certificate( key_file );
3202 plugin->cert = load_certificate( cert_file );
3203 if ((plugin->key==NULL) || (plugin->cert==NULL))
3205 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
3207 _("No usable TLS certificate found and creating one failed! \n"),
3209 GNUNET_free (key_file);
3210 GNUNET_free (cert_file);
3211 GNUNET_free (component_name);
3213 LIBGNUNET_PLUGIN_TRANSPORT_DONE(api);
3217 GNUNET_free (key_file);
3218 GNUNET_free (cert_file);
3220 GNUNET_assert((plugin->key!=NULL) && (plugin->cert!=NULL));
3221 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "TLS certificate loaded\n");
3224 GNUNET_assert ((port > 0) && (port <= 65535));
3225 plugin->port_inbound = port;
3226 gn_timeout = GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT;
3227 unsigned int timeout = (gn_timeout.rel_value) / 1000;
3228 if ( (plugin->http_server_daemon_v6 == NULL) &&
3229 (plugin->use_ipv6 == GNUNET_YES) &&
3232 struct sockaddr * tmp = (struct sockaddr *) plugin->bind6_address;
3233 plugin->http_server_daemon_v6 = MHD_start_daemon (
3243 plugin , &mhd_access_cb, plugin,
3244 MHD_OPTION_SOCK_ADDR, tmp,
3245 MHD_OPTION_CONNECTION_LIMIT, (unsigned int) 32,
3246 //MHD_OPTION_PER_IP_CONNECTION_LIMIT, (unsigned int) 6,
3248 MHD_OPTION_HTTPS_PRIORITIES, plugin->crypto_init,
3249 MHD_OPTION_HTTPS_MEM_KEY, plugin->key,
3250 MHD_OPTION_HTTPS_MEM_CERT, plugin->cert,
3252 MHD_OPTION_CONNECTION_TIMEOUT, (unsigned int) timeout,
3253 MHD_OPTION_CONNECTION_MEMORY_LIMIT, (size_t) (2 * GNUNET_SERVER_MAX_MESSAGE_SIZE),
3254 MHD_OPTION_NOTIFY_COMPLETED, &mhd_termination_cb, NULL,
3255 MHD_OPTION_EXTERNAL_LOGGER, mhd_logger, plugin->mhd_log,
3258 if ( (plugin->http_server_daemon_v4 == NULL) &&
3259 (plugin->use_ipv4 == GNUNET_YES) &&
3262 plugin->http_server_daemon_v4 = MHD_start_daemon (
3272 plugin , &mhd_access_cb, plugin,
3273 MHD_OPTION_SOCK_ADDR, (struct sockaddr_in *)plugin->bind4_address,
3274 MHD_OPTION_CONNECTION_LIMIT, (unsigned int) 32,
3275 //MHD_OPTION_PER_IP_CONNECTION_LIMIT, (unsigned int) 6,
3277 MHD_OPTION_HTTPS_PRIORITIES, plugin->crypto_init,
3278 MHD_OPTION_HTTPS_MEM_KEY, plugin->key,
3279 MHD_OPTION_HTTPS_MEM_CERT, plugin->cert,
3281 MHD_OPTION_CONNECTION_TIMEOUT, (unsigned int) timeout,
3282 MHD_OPTION_CONNECTION_MEMORY_LIMIT, (size_t) (2 * GNUNET_SERVER_MAX_MESSAGE_SIZE),
3283 MHD_OPTION_NOTIFY_COMPLETED, &mhd_termination_cb, NULL,
3284 MHD_OPTION_EXTERNAL_LOGGER, mhd_logger, plugin->mhd_log,
3287 if (plugin->http_server_daemon_v4 != NULL)
3288 plugin->http_server_task_v4 = http_server_daemon_prepare (plugin, plugin->http_server_daemon_v4);
3289 if (plugin->http_server_daemon_v6 != NULL)
3290 plugin->http_server_task_v6 = http_server_daemon_prepare (plugin, plugin->http_server_daemon_v6);
3293 if (plugin->http_server_task_v4 != GNUNET_SCHEDULER_NO_TASK)
3296 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3297 "Starting MHD with IPv4 bound to %s with port %u\n",
3298 (plugin->bind_hostname!=NULL) ? plugin->bind_hostname : "every address",port);
3301 else if ( (plugin->http_server_task_v6 != GNUNET_SCHEDULER_NO_TASK) &&
3302 (plugin->http_server_task_v4 != GNUNET_SCHEDULER_NO_TASK) )
3305 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3306 "Starting MHD with IPv6 bound to %s with port %u\n",
3307 (plugin->bind_hostname!=NULL) ? plugin->bind_hostname : "every address", port);
3310 else if ( (plugin->http_server_task_v6 != GNUNET_SCHEDULER_NO_TASK) &&
3311 (plugin->http_server_task_v4 == GNUNET_SCHEDULER_NO_TASK) )
3314 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
3315 "Starting MHD with IPv4 and IPv6 bound to %s with port %u\n",
3316 (plugin->bind_hostname!=NULL) ? plugin->bind_hostname : "every address",
3323 if ((plugin->use_ipv6 == GNUNET_YES) && (plugin->use_ipv4 == GNUNET_YES))
3324 GNUNET_asprintf(&tmp,"with IPv4 and IPv6 enabled");
3325 if ((plugin->use_ipv6 == GNUNET_NO) && (plugin->use_ipv4 == GNUNET_YES))
3326 GNUNET_asprintf(&tmp,"with IPv4 enabled");
3327 if ((plugin->use_ipv6 == GNUNET_YES) && (plugin->use_ipv4 == GNUNET_NO))
3328 GNUNET_asprintf(&tmp,"with IPv6 enabled");
3329 if ((plugin->use_ipv6 == GNUNET_NO) && (plugin->use_ipv4 == GNUNET_NO))
3330 GNUNET_asprintf(&tmp,"with NO IP PROTOCOL enabled");
3331 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
3332 _("HTTP Server with %s could not be started on port %u! %s plugin failed!\n"),
3333 tmp, port, PROTOCOL_PREFIX);
3335 GNUNET_free (component_name);
3336 LIBGNUNET_PLUGIN_TRANSPORT_DONE (api);
3340 /* Initializing cURL */
3341 curl_global_init(CURL_GLOBAL_ALL);
3342 plugin->multi_handle = curl_multi_init();
3344 if ( NULL == plugin->multi_handle )
3346 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
3348 _("Could not initialize curl multi handle, failed to start %s plugin!\n"),
3350 GNUNET_free(component_name);
3351 LIBGNUNET_PLUGIN_TRANSPORT_DONE (api);
3355 plugin->peers = GNUNET_CONTAINER_multihashmap_create (10);
3356 GNUNET_OS_network_interfaces_list (&process_interfaces, plugin);
3358 GNUNET_free(component_name);
3362 /* end of plugin_transport_http.c */