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_https.c
23 * @brief https 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 "gnunet_disk_lib.h"
41 #include "microhttpd.h"
42 #include <curl/curl.h>
44 #define DEBUG_HTTPS GNUNET_NO
45 #define VERBOSE GNUNET_NO
46 #define DEBUG_MHD GNUNET_YES
47 #define DEBUG_CURL GNUNET_NO
48 #define DEBUG_CONNECTIONS GNUNET_NO
49 #define DEBUG_SESSION_SELECTION GNUNET_NO
51 #define INBOUND GNUNET_NO
52 #define OUTBOUND GNUNET_YES
54 #define PROTOCOL_PREFIX "https"
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
81 * Network format for IPv4 addresses.
83 struct IPv4HttpAddress
86 * IPv4 address, in network byte order.
88 uint32_t ipv4_addr GNUNET_PACKED;
91 * Port number, in network byte order.
93 uint16_t u_port GNUNET_PACKED;
99 * Network format for IPv6 addresses.
101 struct IPv6HttpAddress
106 struct in6_addr ipv6_addr GNUNET_PACKED;
109 * Port number, in network byte order.
111 uint16_t u6_port GNUNET_PACKED;
117 * Message to send using http
122 * next pointer for double linked list
124 struct HTTP_Message * next;
127 * previous pointer for double linked list
129 struct HTTP_Message * prev;
132 * buffer containing data to send
137 * amount of data already sent
147 * Continuation function to call once the transmission buffer
148 * has again space available. NULL if there is no
149 * continuation to call.
151 GNUNET_TRANSPORT_TransmitContinuation transmit_cont;
154 * Closure for transmit_cont.
156 void *transmit_cont_cls;
160 struct HTTP_PeerContext
165 struct GNUNET_PeerIdentity identity;
168 * Pointer to the global plugin struct.
170 struct Plugin *plugin;
173 * Linked list of connections with this peer
176 struct Session * head;
179 * Linked list of connections with this peer
182 struct Session * tail;
185 * id for next session
187 size_t session_id_counter;
190 * Last session used to send data
192 struct Session * last_session;
201 struct SessionHeader header;
204 * next session in linked list
206 struct Session * next;
209 * previous session in linked list
211 struct Session * prev;
214 * address of this session
229 * Message queue for outbound messages
232 struct HTTP_Message * pending_msgs_head;
235 * Message queue for outbound messages
238 struct HTTP_Message * pending_msgs_tail;
241 * partner peer this connection belongs to
243 struct HTTP_PeerContext * peercontext;
246 * message stream tokenizer for incoming data
248 struct GNUNET_SERVER_MessageStreamTokenizer *msgtok;
252 * outbound: OUTBOUND (GNUNET_YES)
253 * inbound : INBOUND (GNUNET_NO)
255 unsigned int direction;
258 * is session connected to send data?
260 unsigned int send_connected;
263 * is send connection active?
265 unsigned int send_active;
268 * connection disconnect forced (e.g. from transport)
270 unsigned int send_force_disconnect;
273 * is session connected to receive data?
275 unsigned int recv_connected;
278 * is receive connection active?
280 unsigned int recv_active;
283 * connection disconnect forced (e.g. from transport)
285 unsigned int recv_force_disconnect;
288 * id for next session
289 * NOTE: 0 is not an ID, zero is not defined. A correct ID is always > 0
294 * entity managing sending data
295 * outbound session: CURL *
296 * inbound session: mhd_connection *
298 void * send_endpoint;
301 * entity managing recieving data
302 * outbound session: CURL *
303 * inbound session: mhd_connection *
305 void * recv_endpoint;
309 * Encapsulation of all of the state of the plugin.
316 struct GNUNET_TRANSPORT_PluginEnvironment *env;
319 * Handle for reporting statistics.
321 struct GNUNET_STATISTICS_Handle *stats;
323 unsigned int port_inbound;
325 struct GNUNET_CONTAINER_MultiHashMap *peers;
328 * Daemon for listening for new IPv4 connections.
330 struct MHD_Daemon *http_server_daemon_v4;
333 * Daemon for listening for new IPv6connections.
335 struct MHD_Daemon *http_server_daemon_v6;
338 * Our primary task for http daemon handling IPv4 connections
340 GNUNET_SCHEDULER_TaskIdentifier http_server_task_v4;
343 * Our primary task for http daemon handling IPv6 connections
345 GNUNET_SCHEDULER_TaskIdentifier http_server_task_v6;
348 * The task sending data
350 GNUNET_SCHEDULER_TaskIdentifier http_curl_task;
355 CURLM * multi_handle;
358 * Our ASCII encoded, hashed peer identity
359 * This string is used to distinguish between connections and is added to the urls
361 struct GNUNET_CRYPTO_HashAsciiEncoded my_ascii_hash_ident;
363 struct sockaddr_in * bind4_address;
364 struct sockaddr_in6 * bind6_address;
365 char * bind_hostname;
369 /* The certificate MHD uses as an \0 terminated string */
372 /* The private key MHD uses as an \0 terminated string */
382 * Function called for a quick conversion of the binary address to
383 * a numeric address. Note that the caller must not free the
384 * address and that the next call to this function is allowed
385 * to override the address again.
388 * @param addr binary address
389 * @param addrlen length of the address
390 * @return string representing the same address
393 http_plugin_address_to_string (void *cls,
399 * Call MHD to process pending ipv4 requests and then go back
400 * and schedule the next run.
402 static void http_server_daemon_v4_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
404 * Call MHD to process pending ipv6 requests and then go back
405 * and schedule the next run.
407 static void http_server_daemon_v6_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
410 * Function setting up curl handle and selecting message to send
412 * @param ses session to send data to
413 * @param con connection
414 * @return bytes sent to peer
416 static ssize_t send_check_connections (void *cls, struct Session *ps);
419 * Function setting up file descriptors and scheduling task to run
421 * @param ses session to send data to
424 static int curl_schedule(void *cls );
428 static char * create_url(void * cls, const void * addr, size_t addrlen, size_t id)
430 struct Plugin *plugin = cls;
433 GNUNET_assert ((addr!=NULL) && (addrlen != 0));
434 GNUNET_asprintf(&url,
435 "%s://%s/%s;%u", PROTOCOL_PREFIX,
436 http_plugin_address_to_string(NULL, addr, addrlen),
437 (char *) (&plugin->my_ascii_hash_ident),id);
443 * Removes a message from the linked list of messages
444 * @param con connection to remove message from
445 * @param msg message to remove
446 * @return GNUNET_SYSERR if msg not found, GNUNET_OK on success
448 static int remove_http_message (struct Session * ps, struct HTTP_Message * msg)
450 GNUNET_CONTAINER_DLL_remove(ps->pending_msgs_head,ps->pending_msgs_tail,msg);
455 int remove_peer_context_Iterator (void *cls, const GNUNET_HashCode *key, void *value);
458 * Removes a session from the linked list of sessions
459 * @param pc peer context
461 * @param call_msg_cont GNUNET_YES to call pending message continuations, otherwise no
462 * @param call_msg_cont_result, result to call message continuations with
463 * @return GNUNET_SYSERR if msg not found, GNUNET_OK on success
465 static int remove_session (struct HTTP_PeerContext * pc, struct Session * ps, int call_msg_cont, int call_msg_cont_result)
467 struct HTTP_Message * msg;
468 struct Plugin * plugin = ps->peercontext->plugin;
470 #if DEBUG_CONNECTIONS
471 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);
473 plugin->env->session_end(plugin, &pc->identity, ps);
475 GNUNET_free_non_null (ps->addr);
476 GNUNET_SERVER_mst_destroy (ps->msgtok);
477 GNUNET_free(ps->url);
479 if (ps->direction==INBOUND)
481 if (ps->recv_endpoint != NULL)
483 curl_easy_cleanup(ps->recv_endpoint);
484 ps->recv_endpoint = NULL;
486 if (ps->send_endpoint != NULL)
488 curl_easy_cleanup(ps->send_endpoint);
489 ps->send_endpoint = NULL;
493 msg = ps->pending_msgs_head;
496 if ((call_msg_cont == GNUNET_YES) && (msg->transmit_cont!=NULL))
498 msg->transmit_cont (msg->transmit_cont_cls,&pc->identity,call_msg_cont_result);
500 GNUNET_CONTAINER_DLL_remove(ps->pending_msgs_head,ps->pending_msgs_head,msg);
502 msg = ps->pending_msgs_head;
505 GNUNET_CONTAINER_DLL_remove(pc->head,pc->tail,ps);
509 /* no sessions left remove peer */
513 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"No sessions left for peer `%s', removing context\n",GNUNET_i2s(&pc->identity));
515 remove_peer_context_Iterator(plugin, &pc->identity.hashPubKey, pc);
521 int remove_peer_context_Iterator (void *cls, const GNUNET_HashCode *key, void *value)
523 struct Plugin *plugin = cls;
524 struct HTTP_PeerContext * pc = value;
525 struct Session * ps = pc->head;
526 struct Session * tmp = NULL;
527 struct HTTP_Message * msg = NULL;
528 struct HTTP_Message * msg_tmp = NULL;
530 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Freeing context for peer `%s'\n",GNUNET_i2s(&pc->identity));
532 GNUNET_CONTAINER_multihashmap_remove (plugin->peers, &pc->identity.hashPubKey, pc);
535 plugin->env->session_end(plugin, &pc->identity, ps);
538 GNUNET_free_non_null (ps->addr);
539 GNUNET_free(ps->url);
540 if (ps->msgtok != NULL)
541 GNUNET_SERVER_mst_destroy (ps->msgtok);
543 msg = ps->pending_msgs_head;
550 if (ps->direction==OUTBOUND)
552 if (ps->send_endpoint!=NULL)
553 curl_easy_cleanup(ps->send_endpoint);
554 if (ps->recv_endpoint!=NULL)
555 curl_easy_cleanup(ps->recv_endpoint);
562 GNUNET_STATISTICS_update (plugin->env->stats,
563 gettext_noop ("# HTTP peers active"),
570 * Add the IP of our network interface to the list of
571 * our external IP addresses.
573 * @param cls the 'struct Plugin*'
574 * @param name name of the interface
575 * @param isDefault do we think this may be our default interface
576 * @param addr address of the interface
577 * @param addrlen number of bytes in addr
578 * @return GNUNET_OK to continue iterating
581 process_interfaces (void *cls,
584 const struct sockaddr *addr, socklen_t addrlen)
586 struct Plugin *plugin = cls;
587 struct IPv4HttpAddress * t4;
588 struct IPv6HttpAddress * t6;
592 GNUNET_assert(cls !=NULL);
593 af = addr->sa_family;
594 if ((af == AF_INET) && (plugin->use_ipv4 == GNUNET_YES) && (plugin->bind6_address == NULL))
596 struct in_addr bnd_cmp = ((struct sockaddr_in *) addr)->sin_addr;
597 t4 = GNUNET_malloc(sizeof(struct IPv4HttpAddress));
598 /* Not skipping loopback addresses
599 if (INADDR_LOOPBACK == ntohl(((struct sockaddr_in *) addr)->sin_addr.s_addr))
605 t4->ipv4_addr = ((struct sockaddr_in *) addr)->sin_addr.s_addr;
606 t4->u_port = htons (plugin->port_inbound);
607 if (plugin->bind4_address != NULL)
609 if (0 == memcmp(&plugin->bind4_address->sin_addr, &bnd_cmp, sizeof (struct in_addr)))
611 plugin->env->notify_address(plugin->env->cls,"https",t4, sizeof (struct IPv4HttpAddress), GNUNET_TIME_UNIT_FOREVER_REL);
616 plugin->env->notify_address(plugin->env->cls,"https",t4, sizeof (struct IPv4HttpAddress), GNUNET_TIME_UNIT_FOREVER_REL);
620 else if ((af == AF_INET6) && (plugin->use_ipv6 == GNUNET_YES) && (plugin->bind4_address == NULL))
622 struct in6_addr bnd_cmp6 = ((struct sockaddr_in6 *) addr)->sin6_addr;
623 if (IN6_IS_ADDR_LINKLOCAL (&((struct sockaddr_in6 *) addr)->sin6_addr))
627 t6 = GNUNET_malloc(sizeof(struct IPv6HttpAddress));
628 GNUNET_assert(t6 != NULL);
629 if (plugin->bind6_address != NULL)
631 if (0 == memcmp(&plugin->bind6_address->sin6_addr, &bnd_cmp6, sizeof (struct in6_addr)))
633 memcpy (&t6->ipv6_addr,
634 &((struct sockaddr_in6 *) addr)->sin6_addr,
635 sizeof (struct in6_addr));
636 t6->u6_port = htons (plugin->port_inbound);
637 plugin->env->notify_address(plugin->env->cls,"https",t6,sizeof (struct IPv6HttpAddress) , GNUNET_TIME_UNIT_FOREVER_REL);
642 memcpy (&t6->ipv6_addr,
643 &((struct sockaddr_in6 *) addr)->sin6_addr,
644 sizeof (struct in6_addr));
645 t6->u6_port = htons (plugin->port_inbound);
646 plugin->env->notify_address(plugin->env->cls,"https",t6,sizeof (struct IPv6HttpAddress) , GNUNET_TIME_UNIT_FOREVER_REL);
653 void mhd_logger (void * arg, const char * fmt, va_list ap)
656 vsnprintf(text, 1024, fmt, ap);
658 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,"MHD: %s \n", text);
662 * Callback called by MHD when a connection is terminated
664 static void mhd_termination_cb (void *cls, struct MHD_Connection * connection, void **httpSessionCache)
666 struct Session * ps = *httpSessionCache;
669 struct HTTP_PeerContext * pc = ps->peercontext;
671 if (connection==ps->recv_endpoint)
673 #if DEBUG_CONNECTIONS
674 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: inbound connection from peer `%s' was terminated\n", ps, GNUNET_i2s(&pc->identity));
676 ps->recv_active = GNUNET_NO;
677 ps->recv_connected = GNUNET_NO;
678 ps->recv_endpoint = NULL;
680 if (connection==ps->send_endpoint)
683 ps->send_active = GNUNET_NO;
684 ps->send_connected = GNUNET_NO;
685 ps->send_endpoint = NULL;
686 #if DEBUG_CONNECTIONS
687 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: outbound connection from peer `%s' was terminated\n", ps, GNUNET_i2s(&pc->identity));
691 /* if both connections disconnected, remove session */
692 if ((ps->send_connected == GNUNET_NO) && (ps->recv_connected == GNUNET_NO))
694 GNUNET_STATISTICS_update (pc->plugin->env->stats,
695 gettext_noop ("# HTTPS inbound sessions for peers active"),
698 remove_session(pc,ps,GNUNET_YES,GNUNET_SYSERR);
702 static void mhd_write_mst_cb (void *cls,
704 const struct GNUNET_MessageHeader *message)
707 struct Session *ps = cls;
708 GNUNET_assert(ps != NULL);
710 struct HTTP_PeerContext *pc = ps->peercontext;
711 GNUNET_assert(pc != NULL);
713 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
714 "Connection %X: Forwarding message to transport service, type %u and size %u from `%s' (`%s')\n",
716 ntohs(message->type),
717 ntohs(message->size),
718 GNUNET_i2s(&(ps->peercontext)->identity),http_plugin_address_to_string(NULL,ps->addr,ps->addrlen));
720 pc->plugin->env->receive (ps->peercontext->plugin->env->cls,
728 * Check if ip is allowed to connect.
731 mhd_accept_cb (void *cls,
732 const struct sockaddr *addr, socklen_t addr_len)
735 struct Plugin *plugin = cls;
737 /* Every connection is accepted, nothing more to do here */
741 int mhd_send_callback (void *cls, uint64_t pos, char *buf, int max)
745 struct Session * ps = cls;
746 struct HTTP_PeerContext * pc;
747 struct HTTP_Message * msg;
749 GNUNET_assert (ps!=NULL);
750 pc = ps->peercontext;
751 msg = ps->pending_msgs_tail;
752 if (ps->send_force_disconnect==GNUNET_YES)
754 #if DEBUG_CONNECTIONS
755 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: outbound forced to disconnect\n",ps);
762 if ((msg->size-msg->pos) <= max)
764 memcpy(buf,&msg->buf[msg->pos],(msg->size-msg->pos));
765 bytes_read = msg->size-msg->pos;
766 msg->pos+=(msg->size-msg->pos);
770 memcpy(buf,&msg->buf[msg->pos],max);
775 if (msg->pos==msg->size)
777 if (NULL!=msg->transmit_cont)
778 msg->transmit_cont (msg->transmit_cont_cls,&pc->identity,GNUNET_OK);
779 remove_http_message(ps,msg);
786 * Process GET or PUT request received via MHD. For
787 * GET, queue response that will send back our pending
788 * messages. For PUT, process incoming data and send
789 * to GNUnet core. In either case, check if a session
790 * already exists and create a new one if not.
793 mdh_access_cb (void *cls,
794 struct MHD_Connection *mhd_connection,
798 const char *upload_data,
799 size_t * upload_data_size, void **httpSessionCache)
801 struct Plugin *plugin = cls;
802 struct MHD_Response *response;
803 const union MHD_ConnectionInfo * conn_info;
805 struct sockaddr_in *addrin;
806 struct sockaddr_in6 *addrin6;
808 char address[INET6_ADDRSTRLEN+14];
809 struct GNUNET_PeerIdentity pi_in;
812 struct IPv4HttpAddress ipv4addr;
813 struct IPv6HttpAddress ipv6addr;
815 struct HTTP_PeerContext *pc;
816 struct Session *ps = NULL;
817 struct Session *ps_tmp = NULL;
820 int send_error_to_client;
824 GNUNET_assert(cls !=NULL);
825 send_error_to_client = GNUNET_NO;
827 if (NULL == *httpSessionCache)
829 /* check url for peer identity , if invalid send HTTP 404*/
830 size_t len = strlen(&url[1]);
831 char * peer = GNUNET_malloc(104+1);
833 if ((len>104) && (url[104]==';'))
835 char * id = GNUNET_malloc((len-104)+1);
836 strcpy(id,&url[105]);
837 memcpy(peer,&url[1],103);
839 id_num = strtoul ( id, NULL , 10);
842 res = GNUNET_CRYPTO_hash_from_string (peer, &(pi_in.hashPubKey));
844 if ( GNUNET_SYSERR == res )
846 response = MHD_create_response_from_data (strlen (HTTP_ERROR_RESPONSE),HTTP_ERROR_RESPONSE, MHD_NO, MHD_NO);
847 res = MHD_queue_response (mhd_connection, MHD_HTTP_NOT_FOUND, response);
848 MHD_destroy_response (response);
849 #if DEBUG_CONNECTIONS
851 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Peer has no valid ident, sent HTTP 1.1/404\n");
853 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Peer has no valid ident, could not send error\n");
860 ps = *httpSessionCache;
861 pc = ps->peercontext;
864 if (NULL == *httpSessionCache)
866 /* get peer context */
867 pc = GNUNET_CONTAINER_multihashmap_get (plugin->peers, &pi_in.hashPubKey);
871 pc = GNUNET_malloc(sizeof (struct HTTP_PeerContext));
873 pc->session_id_counter=1;
874 pc->last_session = NULL;
875 memcpy(&pc->identity, &pi_in, sizeof(struct GNUNET_PeerIdentity));
876 GNUNET_CONTAINER_multihashmap_put(plugin->peers, &pc->identity.hashPubKey, pc, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
877 GNUNET_STATISTICS_update (plugin->env->stats,
878 gettext_noop ("# HTTP peers active"),
883 conn_info = MHD_get_connection_info(mhd_connection, MHD_CONNECTION_INFO_CLIENT_ADDRESS );
884 /* Incoming IPv4 connection */
885 if ( AF_INET == conn_info->client_addr->sin_family)
887 addrin = conn_info->client_addr;
888 inet_ntop(addrin->sin_family, &(addrin->sin_addr),address,INET_ADDRSTRLEN);
889 memcpy(&ipv4addr.ipv4_addr,&(addrin->sin_addr),sizeof(struct in_addr));
890 ipv4addr.u_port = addrin->sin_port;
892 addr_len = sizeof(struct IPv4HttpAddress);
894 /* Incoming IPv6 connection */
895 if ( AF_INET6 == conn_info->client_addr->sin_family)
897 addrin6 = (struct sockaddr_in6 *) conn_info->client_addr;
898 inet_ntop(addrin6->sin6_family, &(addrin6->sin6_addr),address,INET6_ADDRSTRLEN);
899 memcpy(&ipv6addr.ipv6_addr,&(addrin6->sin6_addr),sizeof(struct in6_addr));
900 ipv6addr.u6_port = addrin6->sin6_port;
902 addr_len = sizeof(struct IPv6HttpAddress);
905 GNUNET_assert (addr != NULL);
906 GNUNET_assert (addr_len != 0);
909 /* only inbound sessions here */
914 if ((ps_tmp->direction==INBOUND) && (ps_tmp->session_id == id_num) && (id_num!=0))
916 if ((ps_tmp->recv_force_disconnect!=GNUNET_YES) && (ps_tmp->send_force_disconnect!=GNUNET_YES))
925 ps = GNUNET_malloc(sizeof (struct Session));
926 ps->addr = GNUNET_malloc(addr_len);
927 memcpy(ps->addr,addr,addr_len);
928 ps->addrlen = addr_len;
929 ps->direction=INBOUND;
930 ps->pending_msgs_head = NULL;
931 ps->pending_msgs_tail = NULL;
932 ps->send_connected=GNUNET_NO;
933 ps->send_active=GNUNET_NO;
934 ps->recv_connected=GNUNET_NO;
935 ps->recv_active=GNUNET_NO;
937 ps->session_id =id_num;
938 ps->url = create_url (plugin, ps->addr, ps->addrlen, ps->session_id);
939 GNUNET_CONTAINER_DLL_insert(pc->head,pc->tail,ps);
940 GNUNET_STATISTICS_update (plugin->env->stats,
941 gettext_noop ("# HTTPS inbound sessions for peers active"),
946 *httpSessionCache = ps;
947 if (ps->msgtok==NULL)
948 ps->msgtok = GNUNET_SERVER_mst_create (&mhd_write_mst_cb, ps);
950 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: HTTPS Daemon has new an incoming `%s' request from peer `%s' (`%s')\n",
953 GNUNET_i2s(&pc->identity),
954 http_plugin_address_to_string(NULL, ps->addr, ps->addrlen));
958 /* Is it a PUT or a GET request */
959 if (0 == strcmp (MHD_HTTP_METHOD_PUT, method))
961 if (ps->recv_force_disconnect == GNUNET_YES)
963 #if DEBUG_CONNECTIONS
964 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: inbound connection was forced to disconnect\n",ps);
966 ps->recv_active = GNUNET_NO;
969 if ((*upload_data_size == 0) && (ps->recv_active==GNUNET_NO))
971 ps->recv_endpoint = mhd_connection;
972 ps->recv_connected = GNUNET_YES;
973 ps->recv_active = GNUNET_YES;
974 ps->recv_force_disconnect = GNUNET_NO;
975 #if DEBUG_CONNECTIONS
976 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: inbound PUT connection connected\n",ps);
981 /* Transmission of all data complete */
982 if ((*upload_data_size == 0) && (ps->recv_active == GNUNET_YES))
984 response = MHD_create_response_from_data (strlen (HTTP_PUT_RESPONSE),HTTP_PUT_RESPONSE, MHD_NO, MHD_NO);
985 res = MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
986 #if DEBUG_CONNECTIONS
987 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: Sent HTTP/1.1: 200 OK as PUT Response\n",ps);
989 MHD_destroy_response (response);
990 ps->recv_active=GNUNET_NO;
995 if ((*upload_data_size > 0) && (ps->recv_active == GNUNET_YES))
997 res = GNUNET_SERVER_mst_receive(ps->msgtok, ps, upload_data,*upload_data_size, GNUNET_NO, GNUNET_NO);
998 (*upload_data_size) = 0;
1004 if ( 0 == strcmp (MHD_HTTP_METHOD_GET, method) )
1006 if (ps->send_force_disconnect == GNUNET_YES)
1008 #if DEBUG_CONNECTIONS
1009 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: outbound connection was forced to disconnect\n",ps);
1011 ps->send_active = GNUNET_NO;
1014 ps->send_connected = GNUNET_YES;
1015 ps->send_active = GNUNET_YES;
1016 ps->send_endpoint = mhd_connection;
1017 ps->send_force_disconnect = GNUNET_NO;
1018 #if DEBUG_CONNECTIONS
1019 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: inbound GET connection connected\n",ps);
1021 response = MHD_create_response_from_callback(-1,32 * 1024, &mhd_send_callback, ps, NULL);
1022 res = MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
1023 MHD_destroy_response (response);
1030 * Function that queries MHD's select sets and
1031 * starts the task waiting for them.
1033 static GNUNET_SCHEDULER_TaskIdentifier
1034 http_server_daemon_prepare (void * cls, struct MHD_Daemon *daemon_handle)
1036 struct Plugin *plugin = cls;
1037 GNUNET_SCHEDULER_TaskIdentifier ret;
1041 struct GNUNET_NETWORK_FDSet *wrs;
1042 struct GNUNET_NETWORK_FDSet *wws;
1043 struct GNUNET_NETWORK_FDSet *wes;
1045 unsigned long long timeout;
1047 struct GNUNET_TIME_Relative tv;
1049 GNUNET_assert(cls !=NULL);
1050 ret = GNUNET_SCHEDULER_NO_TASK;
1054 wrs = GNUNET_NETWORK_fdset_create ();
1055 wes = GNUNET_NETWORK_fdset_create ();
1056 wws = GNUNET_NETWORK_fdset_create ();
1058 GNUNET_assert (MHD_YES ==
1059 MHD_get_fdset (daemon_handle,
1064 haveto = MHD_get_timeout (daemon_handle, &timeout);
1065 if (haveto == MHD_YES)
1066 tv.value = (uint64_t) timeout;
1068 tv = GNUNET_TIME_UNIT_FOREVER_REL;
1069 GNUNET_NETWORK_fdset_copy_native (wrs, &rs, max);
1070 GNUNET_NETWORK_fdset_copy_native (wws, &ws, max);
1071 GNUNET_NETWORK_fdset_copy_native (wes, &es, max);
1072 if (daemon_handle == plugin->http_server_daemon_v4)
1074 if (plugin->http_server_task_v4 != GNUNET_SCHEDULER_NO_TASK)
1076 GNUNET_SCHEDULER_cancel(plugin->env->sched, plugin->http_server_task_v4);
1077 plugin->http_server_daemon_v4 = GNUNET_SCHEDULER_NO_TASK;
1080 ret = GNUNET_SCHEDULER_add_select (plugin->env->sched,
1081 GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1082 GNUNET_SCHEDULER_NO_TASK,
1086 &http_server_daemon_v4_run,
1089 if (daemon_handle == plugin->http_server_daemon_v6)
1091 if (plugin->http_server_task_v6 != GNUNET_SCHEDULER_NO_TASK)
1093 GNUNET_SCHEDULER_cancel(plugin->env->sched, plugin->http_server_task_v6);
1094 plugin->http_server_task_v6 = GNUNET_SCHEDULER_NO_TASK;
1097 ret = GNUNET_SCHEDULER_add_select (plugin->env->sched,
1098 GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1099 GNUNET_SCHEDULER_NO_TASK,
1103 &http_server_daemon_v6_run,
1106 GNUNET_NETWORK_fdset_destroy (wrs);
1107 GNUNET_NETWORK_fdset_destroy (wws);
1108 GNUNET_NETWORK_fdset_destroy (wes);
1113 * Call MHD to process pending requests and then go back
1114 * and schedule the next run.
1116 static void http_server_daemon_v4_run (void *cls,
1117 const struct GNUNET_SCHEDULER_TaskContext *tc)
1119 struct Plugin *plugin = cls;
1121 GNUNET_assert(cls !=NULL);
1122 plugin->http_server_task_v4 = GNUNET_SCHEDULER_NO_TASK;
1124 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
1127 GNUNET_assert (MHD_YES == MHD_run (plugin->http_server_daemon_v4));
1128 plugin->http_server_task_v4 = http_server_daemon_prepare (plugin, plugin->http_server_daemon_v4);
1134 * Call MHD to process pending requests and then go back
1135 * and schedule the next run.
1137 static void http_server_daemon_v6_run (void *cls,
1138 const struct GNUNET_SCHEDULER_TaskContext *tc)
1140 struct Plugin *plugin = cls;
1142 GNUNET_assert(cls !=NULL);
1143 plugin->http_server_task_v6 = GNUNET_SCHEDULER_NO_TASK;
1145 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
1148 GNUNET_assert (MHD_YES == MHD_run (plugin->http_server_daemon_v6));
1149 plugin->http_server_task_v6 = http_server_daemon_prepare (plugin, plugin->http_server_daemon_v6);
1153 static size_t curl_get_header_cb( void *ptr, size_t size, size_t nmemb, void *stream)
1155 struct Session * ps = stream;
1157 long http_result = 0;
1159 /* Getting last http result code */
1160 GNUNET_assert(NULL!=ps);
1161 if (ps->recv_connected==GNUNET_NO)
1163 res = curl_easy_getinfo(ps->recv_endpoint, CURLINFO_RESPONSE_CODE, &http_result);
1164 if (CURLE_OK == res)
1166 if (http_result == 200)
1168 ps->recv_connected = GNUNET_YES;
1169 ps->recv_active = GNUNET_YES;
1170 #if DEBUG_CONNECTIONS
1171 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: connected to recieve data\n",ps);
1173 // Calling send_check_connections again since receive is established
1174 send_check_connections (ps->peercontext->plugin, ps);
1181 size_t len = size * nmemb;
1184 if ((size * nmemb) < SIZE_MAX)
1185 tmp = GNUNET_malloc (len+1);
1187 if ((tmp != NULL) && (len > 0))
1189 memcpy(tmp,ptr,len);
1192 if (tmp[len-2] == 13)
1196 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: Header: %s\n",ps,tmp);
1203 return size * nmemb;
1206 static size_t curl_put_header_cb( void *ptr, size_t size, size_t nmemb, void *stream)
1208 struct Session * ps = stream;
1211 size_t len = size * nmemb;
1212 long http_result = 0;
1215 /* Getting last http result code */
1216 GNUNET_assert(NULL!=ps);
1217 res = curl_easy_getinfo(ps->send_endpoint, CURLINFO_RESPONSE_CODE, &http_result);
1218 if (CURLE_OK == res)
1220 if ((http_result == 100) && (ps->send_connected==GNUNET_NO))
1222 ps->send_connected = GNUNET_YES;
1223 ps->send_active = GNUNET_YES;
1224 #if DEBUG_CONNECTIONS
1225 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: connected to send data\n",ps);
1228 if ((http_result == 200) && (ps->send_connected==GNUNET_YES))
1230 ps->send_connected = GNUNET_NO;
1231 ps->send_active = GNUNET_NO;
1232 #if DEBUG_CONNECTIONS
1233 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: sending disconnected\n",ps);
1239 if ((size * nmemb) < SIZE_MAX)
1240 tmp = GNUNET_malloc (len+1);
1242 if ((tmp != NULL) && (len > 0))
1244 memcpy(tmp,ptr,len);
1247 if (tmp[len-2] == 13)
1254 return size * nmemb;
1258 * Callback method used with libcurl
1259 * Method is called when libcurl needs to read data during sending
1260 * @param stream pointer where to write data
1261 * @param size size of an individual element
1262 * @param nmemb count of elements that can be written to the buffer
1263 * @param ptr source pointer, passed to the libcurl handle
1264 * @return bytes written to stream
1266 static size_t curl_send_cb(void *stream, size_t size, size_t nmemb, void *ptr)
1268 struct Session * ps = ptr;
1269 struct HTTP_Message * msg = ps->pending_msgs_tail;
1273 if (ps->send_active == GNUNET_NO)
1274 return CURL_READFUNC_PAUSE;
1276 if ((ps->pending_msgs_tail == NULL) && (ps->send_active == GNUNET_YES))
1278 #if DEBUG_CONNECTIONS
1279 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: No Message to send, pausing connection\n",ps);
1281 ps->send_active = GNUNET_NO;
1282 return CURL_READFUNC_PAUSE;
1285 GNUNET_assert (msg!=NULL);
1288 if (msg->pos < msg->size)
1290 /* data fit in buffer */
1291 if ((msg->size - msg->pos) <= (size * nmemb))
1293 len = (msg->size - msg->pos);
1294 memcpy(stream, &msg->buf[msg->pos], len);
1301 memcpy(stream, &msg->buf[msg->pos], len);
1306 /* no data to send */
1312 if ( msg->pos == msg->size)
1315 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: Message with %u bytes sent, removing message from queue \n",ps, msg->pos);
1317 /* Calling transmit continuation */
1318 if (NULL != msg->transmit_cont)
1319 msg->transmit_cont (msg->transmit_cont_cls,&(ps->peercontext)->identity,GNUNET_OK);
1320 remove_http_message(ps, msg);
1325 static void curl_receive_mst_cb (void *cls,
1327 const struct GNUNET_MessageHeader *message)
1329 struct Session *ps = cls;
1330 GNUNET_assert(ps != NULL);
1332 struct HTTP_PeerContext *pc = ps->peercontext;
1333 GNUNET_assert(pc != NULL);
1336 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1337 "Connection %X: Forwarding message to transport service, type %u and size %u from `%s' (`%s')\n",
1339 ntohs(message->type),
1340 ntohs(message->size),
1341 GNUNET_i2s(&(pc->identity)),http_plugin_address_to_string(NULL,ps->addr,ps->addrlen));
1343 pc->plugin->env->receive (pc->plugin->env->cls,
1352 * Callback method used with libcurl
1353 * Method is called when libcurl needs to write data during sending
1354 * @param stream pointer where to write data
1355 * @param size size of an individual element
1356 * @param nmemb count of elements that can be written to the buffer
1357 * @param ptr destination pointer, passed to the libcurl handle
1358 * @return bytes read from stream
1360 static size_t curl_receive_cb( void *stream, size_t size, size_t nmemb, void *ptr)
1362 struct Session * ps = ptr;
1363 #if DEBUG_CONNECTIONS
1364 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: %u bytes received\n",ps, size*nmemb);
1366 GNUNET_SERVER_mst_receive(ps->msgtok, ps, stream, size*nmemb, GNUNET_NO, GNUNET_NO);
1367 return (size * nmemb);
1371 static void curl_perform (void *cls,
1372 const struct GNUNET_SCHEDULER_TaskContext *tc)
1374 struct Plugin *plugin = cls;
1375 static unsigned int handles_last_run;
1377 struct CURLMsg *msg;
1379 struct Session *ps = NULL;
1380 struct HTTP_PeerContext *pc = NULL;
1381 struct HTTP_Message * cur_msg = NULL;
1385 GNUNET_assert(cls !=NULL);
1387 plugin->http_curl_task = GNUNET_SCHEDULER_NO_TASK;
1388 if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
1394 mret = curl_multi_perform (plugin->multi_handle, &running);
1395 if ((running < handles_last_run) && (running>0))
1400 msg = curl_multi_info_read (plugin->multi_handle, &running);
1403 /* get session for affected curl handle */
1404 GNUNET_assert ( msg->easy_handle != NULL );
1405 curl_easy_getinfo(msg->easy_handle, CURLINFO_PRIVATE, &tmp);
1406 ps = (struct Session *) tmp;
1407 GNUNET_assert ( ps != NULL );
1408 pc = ps->peercontext;
1409 GNUNET_assert ( pc != NULL );
1414 if ( (msg->data.result != CURLE_OK) &&
1415 (msg->data.result != CURLE_GOT_NOTHING) )
1417 /* sending msg failed*/
1418 if (msg->easy_handle == ps->send_endpoint)
1420 #if DEBUG_CONNECTIONS
1421 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
1422 _("Connection %X: HTTPS PUT to peer `%s' (`%s') failed: `%s' `%s'\n"),
1424 GNUNET_i2s(&pc->identity),
1425 http_plugin_address_to_string(NULL, ps->addr, ps->addrlen),
1426 "curl_multi_perform",
1427 curl_easy_strerror (msg->data.result));
1429 ps->send_connected = GNUNET_NO;
1430 ps->send_active = GNUNET_NO;
1431 curl_multi_remove_handle(plugin->multi_handle,ps->send_endpoint);
1432 //curl_easy_cleanup(ps->send_endpoint);
1433 //ps->send_endpoint=NULL;
1434 cur_msg = ps->pending_msgs_tail;
1435 if (( NULL != cur_msg) && ( NULL != cur_msg->transmit_cont))
1436 cur_msg->transmit_cont (cur_msg->transmit_cont_cls,&pc->identity,GNUNET_SYSERR);
1438 /* GET connection failed */
1439 if (msg->easy_handle == ps->recv_endpoint)
1441 #if DEBUG_CONNECTIONS
1442 GNUNET_log(GNUNET_ERROR_TYPE_INFO,
1443 _("Connection %X: HTTPS GET to peer `%s' (`%s') failed: `%s' `%s'\n"),
1445 GNUNET_i2s(&pc->identity),
1446 http_plugin_address_to_string(NULL, ps->addr, ps->addrlen),
1447 "curl_multi_perform",
1448 curl_easy_strerror (msg->data.result));
1450 ps->recv_connected = GNUNET_NO;
1451 ps->recv_active = GNUNET_NO;
1452 curl_multi_remove_handle(plugin->multi_handle,ps->recv_endpoint);
1453 //curl_easy_cleanup(ps->recv_endpoint);
1454 //ps->recv_endpoint=NULL;
1459 if (msg->easy_handle == ps->send_endpoint)
1461 GNUNET_assert (CURLE_OK == curl_easy_getinfo(msg->easy_handle, CURLINFO_RESPONSE_CODE, &http_result));
1462 #if DEBUG_CONNECTIONS
1463 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1464 "Connection %X: HTTPS PUT connection to peer `%s' (`%s') was closed with HTTP code %u\n",
1466 GNUNET_i2s(&pc->identity),
1467 http_plugin_address_to_string(NULL, ps->addr, ps->addrlen),
1470 /* Calling transmit continuation */
1471 cur_msg = ps->pending_msgs_tail;
1472 if (( NULL != cur_msg) && (NULL != cur_msg->transmit_cont))
1474 /* HTTP 1xx : Last message before here was informational */
1475 if ((http_result >=100) && (http_result < 200))
1476 cur_msg->transmit_cont (cur_msg->transmit_cont_cls,&pc->identity,GNUNET_OK);
1477 /* HTTP 2xx: successful operations */
1478 if ((http_result >=200) && (http_result < 300))
1479 cur_msg->transmit_cont (cur_msg->transmit_cont_cls,&pc->identity,GNUNET_OK);
1480 /* HTTP 3xx..5xx: error */
1481 if ((http_result >=300) && (http_result < 600))
1482 cur_msg->transmit_cont (cur_msg->transmit_cont_cls,&pc->identity,GNUNET_SYSERR);
1484 ps->send_connected = GNUNET_NO;
1485 ps->send_active = GNUNET_NO;
1486 curl_multi_remove_handle(plugin->multi_handle,ps->send_endpoint);
1487 //curl_easy_cleanup(ps->send_endpoint);
1488 //ps->send_endpoint =NULL;
1490 if (msg->easy_handle == ps->recv_endpoint)
1492 #if DEBUG_CONNECTIONS
1493 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
1494 "Connection %X: HTTP GET connection to peer `%s' (`%s') was closed with HTTP code %u\n",
1496 GNUNET_i2s(&pc->identity),
1497 http_plugin_address_to_string(NULL, ps->addr, ps->addrlen),
1500 ps->recv_connected = GNUNET_NO;
1501 ps->recv_active = GNUNET_NO;
1502 curl_multi_remove_handle(plugin->multi_handle,ps->recv_endpoint);
1503 //curl_easy_cleanup(ps->recv_endpoint);
1504 //ps->recv_endpoint=NULL;
1507 if ((ps->recv_connected == GNUNET_NO) && (ps->send_connected == GNUNET_NO))
1508 remove_session (pc, ps, GNUNET_YES, GNUNET_SYSERR);
1515 while ( (running > 0) );
1517 handles_last_run = running;
1519 while (mret == CURLM_CALL_MULTI_PERFORM);
1520 curl_schedule(plugin);
1525 * Function setting up file descriptors and scheduling task to run
1526 * @param ses session to send data to
1527 * @return GNUNET_SYSERR for hard failure, GNUNET_OK for ok
1530 http_plugin_disconnect (void *cls,
1531 const struct GNUNET_PeerIdentity *target)
1535 struct Plugin *plugin = cls;
1536 struct HTTP_PeerContext *pc = NULL;
1537 struct Session *ps = NULL;
1538 //struct Session *tmp = NULL;
1540 pc = GNUNET_CONTAINER_multihashmap_get (plugin->peers, &target->hashPubKey);
1547 /* Telling transport that session is getting disconnected */
1548 plugin->env->session_end(plugin, target, ps);
1549 if (ps->direction==OUTBOUND)
1551 if (ps->send_endpoint!=NULL)
1553 //GNUNET_assert(CURLM_OK == curl_multi_remove_handle(plugin->multi_handle,ps->send_endpoint));
1554 //curl_easy_cleanup(ps->send_endpoint);
1555 //ps->send_endpoint=NULL;
1556 ps->send_force_disconnect = GNUNET_YES;
1558 if (ps->recv_endpoint!=NULL)
1560 //GNUNET_assert(CURLM_OK == curl_multi_remove_handle(plugin->multi_handle,ps->recv_endpoint));
1561 //curl_easy_cleanup(ps->recv_endpoint);
1562 //ps->recv_endpoint=NULL;
1563 ps->recv_force_disconnect = GNUNET_YES;
1567 if (ps->direction==INBOUND)
1569 ps->recv_force_disconnect = GNUNET_YES;
1570 ps->send_force_disconnect = GNUNET_YES;
1573 while (ps->pending_msgs_head!=NULL)
1575 remove_http_message(ps, ps->pending_msgs_head);
1577 ps->recv_active = GNUNET_NO;
1578 ps->send_active = GNUNET_NO;
1584 static int curl_schedule(void *cls)
1586 struct Plugin *plugin = cls;
1591 struct GNUNET_NETWORK_FDSet *grs;
1592 struct GNUNET_NETWORK_FDSet *gws;
1596 GNUNET_assert(cls !=NULL);
1598 /* Cancel previous scheduled task */
1599 if (plugin->http_curl_task != GNUNET_SCHEDULER_NO_TASK)
1601 GNUNET_SCHEDULER_cancel(plugin->env->sched, plugin->http_curl_task);
1602 plugin->http_curl_task = GNUNET_SCHEDULER_NO_TASK;
1608 mret = curl_multi_fdset (plugin->multi_handle, &rs, &ws, &es, &max);
1609 if (mret != CURLM_OK)
1611 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1612 _("%s failed at %s:%d: `%s'\n"),
1613 "curl_multi_fdset", __FILE__, __LINE__,
1614 curl_multi_strerror (mret));
1615 return GNUNET_SYSERR;
1617 mret = curl_multi_timeout (plugin->multi_handle, &to);
1618 if (mret != CURLM_OK)
1620 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1621 _("%s failed at %s:%d: `%s'\n"),
1622 "curl_multi_timeout", __FILE__, __LINE__,
1623 curl_multi_strerror (mret));
1624 return GNUNET_SYSERR;
1627 grs = GNUNET_NETWORK_fdset_create ();
1628 gws = GNUNET_NETWORK_fdset_create ();
1629 GNUNET_NETWORK_fdset_copy_native (grs, &rs, max + 1);
1630 GNUNET_NETWORK_fdset_copy_native (gws, &ws, max + 1);
1631 plugin->http_curl_task = GNUNET_SCHEDULER_add_select (plugin->env->sched,
1632 GNUNET_SCHEDULER_PRIORITY_DEFAULT,
1633 GNUNET_SCHEDULER_NO_TASK,
1634 GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 0),
1639 GNUNET_NETWORK_fdset_destroy (gws);
1640 GNUNET_NETWORK_fdset_destroy (grs);
1645 * Function setting up curl handle and selecting message to send
1647 * @param ses session to send data to
1648 * @param con connection
1649 * @return GNUNET_SYSERR on failure, GNUNET_NO if connecting, GNUNET_YES if ok
1651 static ssize_t send_check_connections (void *cls, struct Session *ps)
1653 struct Plugin *plugin = cls;
1655 struct HTTP_Message * msg;
1657 struct GNUNET_TIME_Relative timeout = GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT;
1659 GNUNET_assert(cls !=NULL);
1661 if (ps->direction == OUTBOUND)
1663 /* RECV DIRECTION */
1664 /* Check if session is connected to receive data, otherwise connect to peer */
1665 if (ps->recv_connected == GNUNET_NO)
1667 int fresh = GNUNET_NO;
1668 if (ps->recv_endpoint == NULL)
1671 ps->recv_endpoint = curl_easy_init();
1674 curl_easy_setopt(ps->recv_endpoint, CURLOPT_VERBOSE, 1L);
1676 curl_easy_setopt(ps->recv_endpoint, CURLOPT_URL, ps->url);
1677 curl_easy_setopt (ps->recv_endpoint, CURLOPT_SSLVERSION, CURL_SSLVERSION_TLSv1);
1678 //curl_easy_setopt (ps->recv_endpoint, CURLOPT_SSL_CIPHER_LIST, cipher_suite);
1679 curl_easy_setopt(ps->recv_endpoint, CURLOPT_SSL_VERIFYPEER, 0);
1680 curl_easy_setopt(ps->recv_endpoint, CURLOPT_SSL_VERIFYHOST, 0);
1681 curl_easy_setopt(ps->recv_endpoint, CURLOPT_HEADERFUNCTION, &curl_get_header_cb);
1682 curl_easy_setopt(ps->recv_endpoint, CURLOPT_WRITEHEADER, ps);
1683 curl_easy_setopt(ps->recv_endpoint, CURLOPT_READFUNCTION, curl_send_cb);
1684 curl_easy_setopt(ps->recv_endpoint, CURLOPT_READDATA, ps);
1685 curl_easy_setopt(ps->recv_endpoint, CURLOPT_WRITEFUNCTION, curl_receive_cb);
1686 curl_easy_setopt(ps->recv_endpoint, CURLOPT_WRITEDATA, ps);
1687 curl_easy_setopt(ps->recv_endpoint, CURLOPT_TIMEOUT, (long) timeout.value);
1688 curl_easy_setopt(ps->recv_endpoint, CURLOPT_PRIVATE, ps);
1689 curl_easy_setopt(ps->recv_endpoint, CURLOPT_CONNECTTIMEOUT, HTTP_CONNECT_TIMEOUT);
1690 curl_easy_setopt(ps->recv_endpoint, CURLOPT_BUFFERSIZE, GNUNET_SERVER_MAX_MESSAGE_SIZE);
1692 if (fresh==GNUNET_YES)
1694 mret = curl_multi_add_handle(plugin->multi_handle, ps->recv_endpoint);
1695 if (mret != CURLM_OK)
1697 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1698 _("Connection: %X: %s failed at %s:%d: `%s'\n"),
1700 "curl_multi_add_handle", __FILE__, __LINE__,
1701 curl_multi_strerror (mret));
1702 return GNUNET_SYSERR;
1705 if (curl_schedule (plugin) == GNUNET_SYSERR)
1707 #if DEBUG_CONNECTIONS
1708 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: could not schedule curl task\n",ps);
1710 return GNUNET_SYSERR;
1712 #if DEBUG_CONNECTIONS
1713 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: inbound not connected, initiating connection\n",ps);
1717 /* waiting for receive direction */
1718 if (ps->recv_connected==GNUNET_NO)
1721 /* SEND DIRECTION */
1722 /* Check if session is connected to send data, otherwise connect to peer */
1723 if ((ps->send_connected == GNUNET_YES) && (ps->send_endpoint!= NULL))
1725 if (ps->send_active == GNUNET_YES)
1727 #if DEBUG_CONNECTIONS
1728 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: outbound active, enqueueing message\n",ps);
1732 if (ps->send_active == GNUNET_NO)
1734 #if DEBUG_CONNECTIONS
1735 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: outbound paused, unpausing existing connection and enqueueing message\n",ps);
1737 if (CURLE_OK == curl_easy_pause(ps->send_endpoint,CURLPAUSE_CONT))
1739 ps->send_active=GNUNET_YES;
1743 return GNUNET_SYSERR;
1746 /* not connected, initiate connection */
1747 if (ps->send_connected==GNUNET_NO)
1749 int fresh = GNUNET_NO;
1750 if (NULL == ps->send_endpoint)
1752 ps->send_endpoint = curl_easy_init();
1755 GNUNET_assert (ps->send_endpoint != NULL);
1756 GNUNET_assert (NULL != ps->pending_msgs_tail);
1757 #if DEBUG_CONNECTIONS
1758 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Connection %X: outbound not connected, initiating connection\n",ps);
1760 ps->send_active = GNUNET_NO;
1761 msg = ps->pending_msgs_tail;
1764 curl_easy_setopt(ps->send_endpoint, CURLOPT_VERBOSE, 1L);
1766 curl_easy_setopt(ps->send_endpoint, CURLOPT_URL, ps->url);
1767 curl_easy_setopt(ps->send_endpoint, CURLOPT_PUT, 1L);
1768 curl_easy_setopt(ps->send_endpoint, CURLOPT_HEADERFUNCTION, &curl_put_header_cb);
1769 curl_easy_setopt(ps->send_endpoint, CURLOPT_SSLVERSION, CURL_SSLVERSION_TLSv1);
1770 curl_easy_setopt(ps->send_endpoint, CURLOPT_SSL_VERIFYPEER, 0);
1771 curl_easy_setopt(ps->send_endpoint, CURLOPT_SSL_VERIFYHOST, 0);
1773 curl_easy_setopt(ps->send_endpoint, CURLOPT_WRITEHEADER, ps);
1774 curl_easy_setopt(ps->send_endpoint, CURLOPT_READFUNCTION, curl_send_cb);
1775 curl_easy_setopt(ps->send_endpoint, CURLOPT_READDATA, ps);
1776 curl_easy_setopt(ps->send_endpoint, CURLOPT_WRITEFUNCTION, curl_receive_cb);
1777 curl_easy_setopt(ps->send_endpoint, CURLOPT_READDATA, ps);
1778 curl_easy_setopt(ps->send_endpoint, CURLOPT_TIMEOUT, (long) timeout.value);
1779 curl_easy_setopt(ps->send_endpoint, CURLOPT_PRIVATE, ps);
1780 curl_easy_setopt(ps->send_endpoint, CURLOPT_CONNECTTIMEOUT, HTTP_CONNECT_TIMEOUT);
1781 curl_easy_setopt(ps->send_endpoint, CURLOPT_BUFFERSIZE, GNUNET_SERVER_MAX_MESSAGE_SIZE);
1783 if (fresh==GNUNET_YES)
1785 mret = curl_multi_add_handle(plugin->multi_handle, ps->send_endpoint);
1786 if (mret != CURLM_OK)
1788 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
1789 _("Connection: %X: %s failed at %s:%d: `%s'\n"),
1791 "curl_multi_add_handle", __FILE__, __LINE__,
1792 curl_multi_strerror (mret));
1793 return GNUNET_SYSERR;
1797 if (curl_schedule (plugin) == GNUNET_SYSERR)
1798 return GNUNET_SYSERR;
1801 if (ps->direction == INBOUND)
1803 GNUNET_assert (NULL != ps->pending_msgs_tail);
1804 if ((ps->recv_connected==GNUNET_YES) && (ps->send_connected==GNUNET_YES) &&
1805 (ps->recv_force_disconnect==GNUNET_NO) && (ps->recv_force_disconnect==GNUNET_NO))
1808 return GNUNET_SYSERR;
1811 static struct Session * send_select_session (void * cls, struct HTTP_PeerContext *pc, const void * addr, size_t addrlen, int force_address, struct Session * session)
1813 struct Session * tmp = NULL;
1814 int addr_given = GNUNET_NO;
1816 if ((addr!=NULL) && (addrlen>0))
1817 addr_given = GNUNET_YES;
1819 if (force_address == GNUNET_YES)
1821 /* check session given as argument */
1822 if ((session != NULL) && (addr_given == GNUNET_YES))
1824 if (0 == memcmp(session->addr, addr, addrlen))
1826 /* connection can not be used, since it is disconnected */
1827 if ((session->recv_force_disconnect==GNUNET_NO) && (session->send_force_disconnect==GNUNET_NO))
1829 #if DEBUG_SESSION_SELECTION
1830 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Session %X selected: Using session passed by transport to send to forced address \n", session);
1836 /* check last session used */
1837 if ((pc->last_session != NULL)&& (addr_given == GNUNET_YES))
1839 if (0 == memcmp(pc->last_session->addr, addr, addrlen))
1841 /* connection can not be used, since it is disconnected */
1842 if ((pc->last_session->recv_force_disconnect==GNUNET_NO) && (pc->last_session->send_force_disconnect==GNUNET_NO))
1844 #if DEBUG_SESSION_SELECTION
1845 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Session %X selected: Using last session used to send to forced address \n", pc->last_session);
1847 return pc->last_session;
1851 /* find session in existing sessions */
1853 while ((tmp!=NULL) && (addr_given == GNUNET_YES))
1856 if (0 == memcmp(tmp->addr, addr, addrlen))
1858 /* connection can not be used, since it is disconnected */
1859 if ((tmp->recv_force_disconnect==GNUNET_NO) && (tmp->send_force_disconnect==GNUNET_NO))
1861 #if DEBUG_SESSION_SELECTION
1862 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Session %X selected: Using existing session to send to forced address \n", session);
1870 /* no session to use */
1873 if ((force_address == GNUNET_NO) || (force_address == GNUNET_SYSERR))
1875 /* check session given as argument */
1876 if (session != NULL)
1878 /* connection can not be used, since it is disconnected */
1879 if ((session->recv_force_disconnect==GNUNET_NO) && (session->send_force_disconnect==GNUNET_NO))
1881 #if DEBUG_SESSION_SELECTION
1882 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Session %X selected: Using session passed by transport to send not-forced address \n", session);
1888 /* check last session used */
1889 if (pc->last_session != NULL)
1891 /* connection can not be used, since it is disconnected */
1892 if ((pc->last_session->recv_force_disconnect==GNUNET_NO) && (pc->last_session->send_force_disconnect==GNUNET_NO))
1894 #if DEBUG_SESSION_SELECTION
1895 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Session %X selected: Using last session to send to not-forced address \n", pc->last_session);
1897 return pc->last_session;
1900 /* find session in existing sessions */
1904 /* connection can not be used, since it is disconnected */
1905 if ((tmp->recv_force_disconnect==GNUNET_NO) && (tmp->send_force_disconnect==GNUNET_NO))
1907 #if DEBUG_SESSION_SELECTION
1908 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Session %X selected: Using existing session to send to not-forced address \n", tmp);
1920 * Function that can be used by the transport service to transmit
1921 * a message using the plugin. Note that in the case of a
1922 * peer disconnecting, the continuation MUST be called
1923 * prior to the disconnect notification itself. This function
1924 * will be called with this peer's HELLO message to initiate
1925 * a fresh connection to another peer.
1927 * @param cls closure
1928 * @param target who should receive this message
1929 * @param msgbuf the message to transmit
1930 * @param msgbuf_size number of bytes in 'msgbuf'
1931 * @param priority how important is the message (most plugins will
1932 * ignore message priority and just FIFO)
1933 * @param timeout how long to wait at most for the transmission (does not
1934 * require plugins to discard the message after the timeout,
1935 * just advisory for the desired delay; most plugins will ignore
1937 * @param session which session must be used (or NULL for "any")
1938 * @param addr the address to use (can be NULL if the plugin
1939 * is "on its own" (i.e. re-use existing TCP connection))
1940 * @param addrlen length of the address in bytes
1941 * @param force_address GNUNET_YES if the plugin MUST use the given address,
1942 * GNUNET_NO means the plugin may use any other address and
1943 * GNUNET_SYSERR means that only reliable existing
1944 * bi-directional connections should be used (regardless
1946 * @param cont continuation to call once the message has
1947 * been transmitted (or if the transport is ready
1948 * for the next transmission call; or if the
1949 * peer disconnected...); can be NULL
1950 * @param cont_cls closure for cont
1951 * @return number of bytes used (on the physical network, with overheads);
1952 * -1 on hard errors (i.e. address invalid); 0 is a legal value
1953 * and does NOT mean that the message was not transmitted (DV)
1956 http_plugin_send (void *cls,
1957 const struct GNUNET_PeerIdentity *target,
1960 unsigned int priority,
1961 struct GNUNET_TIME_Relative to,
1962 struct Session *session,
1966 GNUNET_TRANSPORT_TransmitContinuation cont,
1969 struct Plugin *plugin = cls;
1970 struct HTTP_Message *msg;
1971 struct HTTP_PeerContext * pc;
1972 struct Session * ps = NULL;
1974 GNUNET_assert(cls !=NULL);
1977 char * force = GNUNET_malloc(40);
1978 if (force_address == GNUNET_YES)
1979 strcpy(force,"forced addr.");
1980 if (force_address == GNUNET_NO)
1981 strcpy(force,"any addr.");
1982 if (force_address == GNUNET_SYSERR)
1983 strcpy(force,"reliable bi-direc. address addr.");
1985 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Transport tells me to send %u bytes to `%s' using %s (%s) and session: %X\n",
1989 http_plugin_address_to_string(NULL, addr, addrlen),
1995 pc = GNUNET_CONTAINER_multihashmap_get (plugin->peers, &target->hashPubKey);
1999 pc = GNUNET_malloc(sizeof (struct HTTP_PeerContext));
2000 pc->plugin = plugin;
2001 pc->session_id_counter=1;
2002 pc->last_session = NULL;
2003 memcpy(&pc->identity, target, sizeof(struct GNUNET_PeerIdentity));
2004 GNUNET_CONTAINER_multihashmap_put(plugin->peers, &pc->identity.hashPubKey, pc, GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
2005 GNUNET_STATISTICS_update (plugin->env->stats,
2006 gettext_noop ("# HTTP peers active"),
2011 ps = send_select_session (plugin, pc, addr, addrlen, force_address, session);
2013 /* session not existing, but address forced -> creating new session */
2016 if ((addr!=NULL) && (addrlen!=0))
2018 ps = GNUNET_malloc(sizeof (struct Session));
2019 #if DEBUG_SESSION_SELECTION
2020 if (force_address == GNUNET_YES)
2021 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"No existing connection & forced address: creating new session %X to peer %s\n", ps, GNUNET_i2s(target));
2022 if (force_address != GNUNET_YES)
2023 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"No existing connection: creating new session %X to peer %s\n", ps, GNUNET_i2s(target));
2025 if ((addrlen!=0) && (addr!=NULL))
2027 ps->addr = GNUNET_malloc(addrlen);
2028 memcpy(ps->addr,addr,addrlen);
2029 ps->addrlen = addrlen;
2036 ps->direction=OUTBOUND;
2037 ps->recv_connected = GNUNET_NO;
2038 ps->recv_force_disconnect = GNUNET_NO;
2039 ps->send_connected = GNUNET_NO;
2040 ps->send_force_disconnect = GNUNET_NO;
2041 ps->pending_msgs_head = NULL;
2042 ps->pending_msgs_tail = NULL;
2044 ps->session_id = pc->session_id_counter;
2045 pc->session_id_counter++;
2046 ps->url = create_url (plugin, ps->addr, ps->addrlen, ps->session_id);
2047 if (ps->msgtok == NULL)
2048 ps->msgtok = GNUNET_SERVER_mst_create (&curl_receive_mst_cb, ps);
2049 GNUNET_CONTAINER_DLL_insert(pc->head,pc->tail,ps);
2052 GNUNET_STATISTICS_update (plugin->env->stats,
2053 gettext_noop ("# HTTP outbound sessions for peers active"),
2060 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));
2062 return GNUNET_SYSERR;
2067 msg = GNUNET_malloc (sizeof (struct HTTP_Message) + msgbuf_size);
2069 msg->size = msgbuf_size;
2071 msg->buf = (char *) &msg[1];
2072 msg->transmit_cont = cont;
2073 msg->transmit_cont_cls = cont_cls;
2074 memcpy (msg->buf,msgbuf, msgbuf_size);
2075 GNUNET_CONTAINER_DLL_insert(ps->pending_msgs_head,ps->pending_msgs_tail,msg);
2077 if (send_check_connections (plugin, ps) != GNUNET_SYSERR)
2079 if (force_address != GNUNET_YES)
2080 pc->last_session = ps;
2082 if (pc->last_session==NULL)
2083 pc->last_session = ps;
2087 return GNUNET_SYSERR;
2093 * Function that can be used to force the plugin to disconnect
2094 * from the given peer and cancel all previous transmissions
2095 * (and their continuationc).
2097 * @param cls closure
2098 * @param target peer from which to disconnect
2101 * Convert the transports address to a nice, human-readable
2104 * @param cls closure
2105 * @param type name of the transport that generated the address
2106 * @param addr one of the addresses of the host, NULL for the last address
2107 * the specific address format depends on the transport
2108 * @param addrlen length of the address
2109 * @param numeric should (IP) addresses be displayed in numeric form?
2110 * @param timeout after how long should we give up?
2111 * @param asc function to call on each string
2112 * @param asc_cls closure for asc
2115 http_plugin_address_pretty_printer (void *cls,
2120 struct GNUNET_TIME_Relative timeout,
2121 GNUNET_TRANSPORT_AddressStringCallback
2124 const struct IPv4HttpAddress *t4;
2125 const struct IPv6HttpAddress *t6;
2126 struct sockaddr_in a4;
2127 struct sockaddr_in6 a6;
2133 GNUNET_assert(cls !=NULL);
2134 if (addrlen == sizeof (struct IPv6HttpAddress))
2136 address = GNUNET_malloc (INET6_ADDRSTRLEN);
2138 a6.sin6_addr = t6->ipv6_addr;
2139 inet_ntop(AF_INET6, &(a6.sin6_addr),address,INET6_ADDRSTRLEN);
2140 port = ntohs(t6->u6_port);
2142 else if (addrlen == sizeof (struct IPv4HttpAddress))
2144 address = GNUNET_malloc (INET_ADDRSTRLEN);
2146 a4.sin_addr.s_addr = t4->ipv4_addr;
2147 inet_ntop(AF_INET, &(a4.sin_addr),address,INET_ADDRSTRLEN);
2148 port = ntohs(t4->u_port);
2152 /* invalid address */
2153 GNUNET_break_op (0);
2154 asc (asc_cls, NULL);
2157 res = GNUNET_asprintf(&ret,"%s://%s:%u/", PROTOCOL_PREFIX, address,port);
2158 GNUNET_free (address);
2159 GNUNET_assert(res != 0);
2161 GNUNET_free_non_null (ret);
2167 * Another peer has suggested an address for this
2168 * peer and transport plugin. Check that this could be a valid
2169 * address. If so, consider adding it to the list
2172 * @param cls closure
2173 * @param addr pointer to the address
2174 * @param addrlen length of addr
2175 * @return GNUNET_OK if this is a plausible address for this peer
2179 http_plugin_address_suggested (void *cls,
2180 const void *addr, size_t addrlen)
2182 struct Plugin *plugin = cls;
2183 struct IPv4HttpAddress *v4;
2184 struct IPv6HttpAddress *v6;
2187 GNUNET_assert(cls !=NULL);
2188 if ((addrlen != sizeof (struct IPv4HttpAddress)) &&
2189 (addrlen != sizeof (struct IPv6HttpAddress)))
2191 return GNUNET_SYSERR;
2193 if (addrlen == sizeof (struct IPv4HttpAddress))
2195 v4 = (struct IPv4HttpAddress *) addr;
2196 /* Not skipping loopback
2197 if (INADDR_LOOPBACK == ntohl(v4->ipv4_addr))
2199 return GNUNET_SYSERR;
2201 port = ntohs (v4->u_port);
2202 if (port != plugin->port_inbound)
2204 return GNUNET_SYSERR;
2207 if (addrlen == sizeof (struct IPv6HttpAddress))
2209 v6 = (struct IPv6HttpAddress *) addr;
2210 if (IN6_IS_ADDR_LINKLOCAL (&v6->ipv6_addr))
2212 return GNUNET_SYSERR;
2214 port = ntohs (v6->u6_port);
2215 if (port != plugin->port_inbound)
2217 return GNUNET_SYSERR;
2226 * Function called for a quick conversion of the binary address to
2227 * a numeric address. Note that the caller must not free the
2228 * address and that the next call to this function is allowed
2229 * to override the address again.
2231 * @param cls closure
2232 * @param addr binary address
2233 * @param addrlen length of the address
2234 * @return string representing the same address
2237 http_plugin_address_to_string (void *cls,
2241 const struct IPv4HttpAddress *t4;
2242 const struct IPv6HttpAddress *t6;
2243 struct sockaddr_in a4;
2244 struct sockaddr_in6 a6;
2250 if (addrlen == sizeof (struct IPv6HttpAddress))
2252 address = GNUNET_malloc (INET6_ADDRSTRLEN);
2254 a6.sin6_addr = t6->ipv6_addr;
2255 inet_ntop(AF_INET6, &(a6.sin6_addr),address,INET6_ADDRSTRLEN);
2256 port = ntohs(t6->u6_port);
2258 else if (addrlen == sizeof (struct IPv4HttpAddress))
2260 address = GNUNET_malloc (INET_ADDRSTRLEN);
2262 a4.sin_addr.s_addr = t4->ipv4_addr;
2263 inet_ntop(AF_INET, &(a4.sin_addr),address,INET_ADDRSTRLEN);
2264 port = ntohs(t4->u_port);
2268 /* invalid address */
2271 res = GNUNET_asprintf(&ret,"%s:%u",address,port);
2272 GNUNET_free (address);
2273 GNUNET_assert(res != 0);
2278 load_certificate( const char * file )
2280 struct GNUNET_DISK_FileHandle * gn_file;
2285 if (0!=STAT(file, &fstat))
2287 text = GNUNET_malloc (fstat.st_size+1);
2288 gn_file = GNUNET_DISK_file_open(file,GNUNET_DISK_OPEN_READ, GNUNET_DISK_PERM_USER_READ);
2294 if (GNUNET_SYSERR == GNUNET_DISK_file_read(gn_file, text, fstat.st_size))
2299 text[fstat.st_size] = '\0';
2300 GNUNET_DISK_file_close(gn_file);
2307 * Exit point from the plugin.
2310 libgnunet_plugin_transport_https_done (void *cls)
2312 struct GNUNET_TRANSPORT_PluginFunctions *api = cls;
2313 struct Plugin *plugin = api->cls;
2315 GNUNET_assert(cls !=NULL);
2317 if (plugin->http_server_daemon_v4 != NULL)
2319 MHD_stop_daemon (plugin->http_server_daemon_v4);
2320 plugin->http_server_daemon_v4 = NULL;
2322 if (plugin->http_server_daemon_v6 != NULL)
2324 MHD_stop_daemon (plugin->http_server_daemon_v6);
2325 plugin->http_server_daemon_v6 = NULL;
2328 if ( plugin->http_server_task_v4 != GNUNET_SCHEDULER_NO_TASK)
2330 GNUNET_SCHEDULER_cancel(plugin->env->sched, plugin->http_server_task_v4);
2331 plugin->http_server_task_v4 = GNUNET_SCHEDULER_NO_TASK;
2334 if ( plugin->http_server_task_v6 != GNUNET_SCHEDULER_NO_TASK)
2336 GNUNET_SCHEDULER_cancel(plugin->env->sched, plugin->http_server_task_v6);
2337 plugin->http_server_task_v6 = GNUNET_SCHEDULER_NO_TASK;
2341 /* free all peer information */
2342 if (plugin->peers!=NULL)
2344 GNUNET_CONTAINER_multihashmap_iterate (plugin->peers,
2345 &remove_peer_context_Iterator,
2347 GNUNET_CONTAINER_multihashmap_destroy (plugin->peers);
2349 if (plugin->multi_handle!=NULL)
2351 mret = curl_multi_cleanup(plugin->multi_handle);
2353 if ( CURLM_OK != mret)
2354 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"curl multihandle clean up failed\n");
2356 plugin->multi_handle = NULL;
2358 curl_global_cleanup();
2360 if ( plugin->http_curl_task != GNUNET_SCHEDULER_NO_TASK)
2362 GNUNET_SCHEDULER_cancel(plugin->env->sched, plugin->http_curl_task);
2363 plugin->http_curl_task = GNUNET_SCHEDULER_NO_TASK;
2366 GNUNET_free_non_null (plugin->bind4_address);
2367 GNUNET_free_non_null (plugin->bind6_address);
2368 GNUNET_free_non_null (plugin->bind_hostname);
2369 GNUNET_free_non_null (plugin->crypto_init);
2370 GNUNET_free (plugin);
2373 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Unload http plugin complete...\n");
2380 * Entry point for the plugin.
2383 libgnunet_plugin_transport_https_init (void *cls)
2385 struct GNUNET_TRANSPORT_PluginEnvironment *env = cls;
2386 struct Plugin *plugin;
2387 struct GNUNET_TRANSPORT_PluginFunctions *api;
2388 struct GNUNET_TIME_Relative gn_timeout;
2389 long long unsigned int port;
2394 GNUNET_assert(cls !=NULL);
2396 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting https plugin...\n");
2399 plugin = GNUNET_malloc (sizeof (struct Plugin));
2400 plugin->stats = env->stats;
2402 plugin->peers = NULL;
2403 plugin->bind4_address = NULL;
2404 plugin->use_ipv6 = GNUNET_YES;
2405 plugin->use_ipv4 = GNUNET_YES;
2407 api = GNUNET_malloc (sizeof (struct GNUNET_TRANSPORT_PluginFunctions));
2409 api->send = &http_plugin_send;
2410 api->disconnect = &http_plugin_disconnect;
2411 api->address_pretty_printer = &http_plugin_address_pretty_printer;
2412 api->check_address = &http_plugin_address_suggested;
2413 api->address_to_string = &http_plugin_address_to_string;
2415 /* Hashing our identity to use it in URLs */
2416 GNUNET_CRYPTO_hash_to_enc ( &(plugin->env->my_identity->hashPubKey), &plugin->my_ascii_hash_ident);
2418 /* Use IPv6 yes/no */
2419 if (GNUNET_CONFIGURATION_have_value (env->cfg,
2420 "transport-https", "USE_IPv6"))
2422 plugin->use_ipv6 = GNUNET_CONFIGURATION_get_value_yesno (env->cfg,
2426 /* Use IPv4 yes/no */
2427 if (GNUNET_CONFIGURATION_have_value (env->cfg,
2428 "transport-https", "USE_IPv4"))
2430 plugin->use_ipv4 = GNUNET_CONFIGURATION_get_value_yesno (env->cfg,
2434 /* Reading port number from config file */
2436 GNUNET_CONFIGURATION_get_value_number (env->cfg,
2442 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
2444 _("Require valid port number for transport plugin `%s' in configuration!\n"),
2446 libgnunet_plugin_transport_https_done (api);
2450 /* Reading ipv4 addresse to bind to from config file */
2451 if ((plugin->use_ipv4==GNUNET_YES) && (GNUNET_CONFIGURATION_have_value (env->cfg,
2452 "transport-https", "BINDTO4")))
2454 GNUNET_break (GNUNET_OK ==
2455 GNUNET_CONFIGURATION_get_value_string (env->cfg,
2458 &plugin->bind_hostname));
2459 plugin->bind4_address = GNUNET_malloc(sizeof(struct sockaddr_in));
2460 plugin->bind4_address->sin_family = AF_INET;
2461 plugin->bind4_address->sin_port = htons (port);
2463 if (inet_pton(AF_INET,plugin->bind_hostname, &plugin->bind4_address->sin_addr)<=0)
2465 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
2467 _("Misconfigured address to bind to in configuration!\n"),
2469 GNUNET_free(plugin->bind4_address);
2470 GNUNET_free(plugin->bind_hostname);
2471 plugin->bind_hostname = NULL;
2472 plugin->bind4_address = NULL;
2476 /* Get crypto init string from config */
2477 if (GNUNET_CONFIGURATION_have_value (env->cfg,
2478 "transport-https", "CRYPTO_INIT"))
2480 GNUNET_CONFIGURATION_get_value_string (env->cfg,
2483 &plugin->crypto_init);
2487 GNUNET_asprintf(&plugin->crypto_init,"NORMAL");
2490 /* Get private key file from config */
2491 if (GNUNET_CONFIGURATION_have_value (env->cfg,
2492 "transport-https", "CERT_FILE"))
2494 GNUNET_CONFIGURATION_get_value_string (env->cfg,
2501 GNUNET_asprintf(&cert_file,"https.cert");
2504 /* Get private key file from config */
2505 if (GNUNET_CONFIGURATION_have_value (env->cfg,
2506 "transport-https", "KEY_FILE"))
2508 GNUNET_CONFIGURATION_get_value_string (env->cfg,
2515 GNUNET_asprintf(&key_file,"https.key");
2518 /* Get private key file from config */
2519 if (GNUNET_CONFIGURATION_have_value (env->cfg,
2520 "transport-https", "CERT_FILE"))
2522 GNUNET_CONFIGURATION_get_value_string (env->cfg,
2529 GNUNET_asprintf(&cert_file,"https.cert");
2532 /* Should plugin use ipv6? */
2533 if ((plugin->use_ipv6==GNUNET_YES) && (GNUNET_CONFIGURATION_have_value (env->cfg,
2534 "transport-https", "BINDTO6")))
2536 if (GNUNET_OK == GNUNET_CONFIGURATION_get_value_string (env->cfg,
2539 &plugin->bind_hostname))
2541 plugin->bind6_address = GNUNET_malloc(sizeof(struct sockaddr_in6));
2542 plugin->bind6_address->sin6_family = AF_INET6;
2543 plugin->bind6_address->sin6_port = htons (port);
2545 if (inet_pton(AF_INET6,plugin->bind_hostname, &plugin->bind6_address->sin6_addr)<=0)
2547 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
2549 _("Misconfigured address to bind to in configuration!\n"),
2551 GNUNET_free(plugin->bind6_address);
2552 GNUNET_free(plugin->bind_hostname);
2553 plugin->bind_hostname = NULL;
2554 plugin->bind6_address = NULL;
2559 /* read key & certificates from file */
2560 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Loading TLS certificate `%s' `%s'\n", key_file, cert_file);
2562 plugin->key = load_certificate( key_file );
2563 plugin->cert = load_certificate( cert_file );
2565 if ((plugin->key==NULL) || (plugin->cert==NULL))
2569 GNUNET_asprintf(&cmd,"gnunet-transport-certificate-creation %s %s", key_file, cert_file);
2570 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "No usable TLS certificate found, creating certificate \n");
2575 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
2577 _("Could not create a new TLS certificate, shell script `%s' failed!\n"),cmd,
2579 GNUNET_free (key_file);
2580 GNUNET_free (cert_file);
2581 libgnunet_plugin_transport_https_done(api);
2588 plugin->key = load_certificate( key_file );
2589 plugin->cert = load_certificate( cert_file );
2591 if ((plugin->key==NULL) || (plugin->cert==NULL))
2593 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
2595 _("No usable TLS certificate found and creating one failed! \n"),
2597 GNUNET_free (key_file);
2598 GNUNET_free (cert_file);
2599 libgnunet_plugin_transport_https_done(api);
2604 GNUNET_free (key_file);
2605 GNUNET_free (cert_file);
2608 GNUNET_assert((plugin->key!=NULL) && (plugin->cert!=NULL));
2609 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "TLS certificate loaded\n", key_file, cert_file);
2611 GNUNET_assert ((port > 0) && (port <= 65535));
2612 plugin->port_inbound = port;
2613 gn_timeout = GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT;
2614 unsigned int timeout = (gn_timeout.value) / 1000;
2615 if ((plugin->http_server_daemon_v6 == NULL) && (plugin->use_ipv6 == GNUNET_YES) && (port != 0))
2617 struct sockaddr * tmp = (struct sockaddr *) plugin->bind6_address;
2618 plugin->http_server_daemon_v6 = MHD_start_daemon (
2622 MHD_USE_IPv6 | MHD_USE_SSL,
2625 plugin , &mdh_access_cb, plugin,
2626 /*MHD_OPTION_HTTPS_PRIORITIES, "NORMAL:",*/
2627 /*MHD_OPTION_HTTPS_PRIORITIES, "PERFORMANCE:",*/
2628 /* MHD_OPTION_HTTPS_PRIORITIES, "NONE:+VERS-TLS1.0:+ARCFOUR-128:+SHA1:+RSA:+COMP-NULL", */
2629 /*MHD_OPTION_HTTPS_PRIORITIES, "NONE:+VERS-TLS1.0:+ARCFOUR-128:+MD5:+RSA:+COMP-NULL",*/
2630 MHD_OPTION_HTTPS_PRIORITIES, plugin->crypto_init,
2631 MHD_OPTION_HTTPS_MEM_KEY, plugin->key,
2632 MHD_OPTION_HTTPS_MEM_CERT, plugin->cert,
2633 MHD_OPTION_SOCK_ADDR, tmp,
2634 MHD_OPTION_CONNECTION_LIMIT, (unsigned int) 32,
2635 //MHD_OPTION_PER_IP_CONNECTION_LIMIT, (unsigned int) 6,
2636 MHD_OPTION_CONNECTION_TIMEOUT, (unsigned int) timeout,
2637 MHD_OPTION_CONNECTION_MEMORY_LIMIT, (size_t) (16 * 1024),
2638 MHD_OPTION_NOTIFY_COMPLETED, &mhd_termination_cb, NULL,
2639 MHD_OPTION_EXTERNAL_LOGGER, mhd_logger, plugin->mhd_log,
2642 if ((plugin->http_server_daemon_v4 == NULL) && (plugin->use_ipv4 == GNUNET_YES) && (port != 0))
2644 plugin->http_server_daemon_v4 = MHD_start_daemon (
2648 MHD_NO_FLAG | MHD_USE_SSL,
2651 plugin , &mdh_access_cb, plugin,
2652 /*MHD_OPTION_HTTPS_PRIORITIES, "NORMAL:",*/
2653 /*MHD_OPTION_HTTPS_PRIORITIES, "PERFORMANCE:",*/
2654 /* MHD_OPTION_HTTPS_PRIORITIES, "NONE:+VERS-TLS1.0:+ARCFOUR-128:+SHA1:+RSA:+COMP-NULL", */
2655 /*MHD_OPTION_HTTPS_PRIORITIES, "NONE:+VERS-TLS1.0:+ARCFOUR-128:+MD5:+RSA:+COMP-NULL",*/
2656 MHD_OPTION_HTTPS_PRIORITIES, plugin->crypto_init,
2657 MHD_OPTION_HTTPS_MEM_KEY, plugin->key,
2658 MHD_OPTION_HTTPS_MEM_CERT, plugin->cert,
2659 MHD_OPTION_SOCK_ADDR, (struct sockaddr_in *)plugin->bind4_address,
2660 MHD_OPTION_CONNECTION_LIMIT, (unsigned int) 32,
2661 //MHD_OPTION_PER_IP_CONNECTION_LIMIT, (unsigned int) 6,
2662 MHD_OPTION_CONNECTION_TIMEOUT, (unsigned int) timeout,
2663 MHD_OPTION_CONNECTION_MEMORY_LIMIT, (size_t) (16 * 1024),
2664 MHD_OPTION_NOTIFY_COMPLETED, &mhd_termination_cb, NULL,
2665 MHD_OPTION_EXTERNAL_LOGGER, mhd_logger, plugin->mhd_log,
2668 if (plugin->http_server_daemon_v4 != NULL)
2669 plugin->http_server_task_v4 = http_server_daemon_prepare (plugin, plugin->http_server_daemon_v4);
2670 if (plugin->http_server_daemon_v6 != NULL)
2671 plugin->http_server_task_v6 = http_server_daemon_prepare (plugin, plugin->http_server_daemon_v6);
2674 if (plugin->http_server_task_v4 != GNUNET_SCHEDULER_NO_TASK)
2677 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting HTTPS Server with IPv4 bound to %s with port %u\n",(plugin->bind_hostname!=NULL) ? plugin->bind_hostname : "every address",port);
2680 else if ((plugin->http_server_task_v6 != GNUNET_SCHEDULER_NO_TASK) && (plugin->http_server_task_v4 != GNUNET_SCHEDULER_NO_TASK))
2683 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting HTTPS Server with IPv6 bound to %s with port %u\n",(plugin->bind_hostname!=NULL) ? plugin->bind_hostname : "every address", port);
2686 else if ((plugin->http_server_task_v6 != GNUNET_SCHEDULER_NO_TASK) && (plugin->http_server_task_v4 == GNUNET_SCHEDULER_NO_TASK))
2689 GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,"Starting HTTPS Server with IPv4 and IPv6 bound to %s with port %u\n",(plugin->bind_hostname!=NULL) ? plugin->bind_hostname : "every address", port);
2695 if ((plugin->use_ipv6 == GNUNET_YES) && (plugin->use_ipv4 == GNUNET_YES))
2696 GNUNET_asprintf(&tmp,"with IPv4 and IPv6 enabled");
2697 if ((plugin->use_ipv6 == GNUNET_NO) && (plugin->use_ipv4 == GNUNET_YES))
2698 GNUNET_asprintf(&tmp,"with IPv4 enabled");
2699 if ((plugin->use_ipv6 == GNUNET_YES) && (plugin->use_ipv4 == GNUNET_NO))
2700 GNUNET_asprintf(&tmp,"with IPv6 enabled");
2701 if ((plugin->use_ipv6 == GNUNET_NO) && (plugin->use_ipv4 == GNUNET_NO))
2702 GNUNET_asprintf(&tmp,"with NO IP PROTOCOL enabled");
2703 GNUNET_log (GNUNET_ERROR_TYPE_ERROR,"HTTPS Server with %s could not be started on port %u! https plugin failed!\n",tmp, port);
2705 libgnunet_plugin_transport_https_done (api);
2709 /* Initializing cURL */
2710 curl_global_init(CURL_GLOBAL_ALL);
2711 plugin->multi_handle = curl_multi_init();
2713 if ( NULL == plugin->multi_handle )
2715 GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
2717 _("Could not initialize curl multi handle, failed to start http plugin!\n"),
2719 libgnunet_plugin_transport_https_done (api);
2723 plugin->peers = GNUNET_CONTAINER_multihashmap_create (10);
2724 GNUNET_OS_network_interfaces_list (&process_interfaces, plugin);
2729 /* end of plugin_transport_https.c */