diff options
Diffstat (limited to 'src/transport/plugin_transport_http.c')
| -rw-r--r-- | src/transport/plugin_transport_http.c | 1743 |
1 files changed, 0 insertions, 1743 deletions
diff --git a/src/transport/plugin_transport_http.c b/src/transport/plugin_transport_http.c deleted file mode 100644 index d99f531..0000000 --- a/src/transport/plugin_transport_http.c +++ /dev/null @@ -1,1743 +0,0 @@ -/* - This file is part of GNUnet - (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Christian Grothoff (and other contributing authors) - - GNUnet is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published - by the Free Software Foundation; either version 3, or (at your - option) any later version. - - GNUnet is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with GNUnet; see the file COPYING. If not, write to the - Free Software Foundation, Inc., 59 Temple Place - Suite 330, - Boston, MA 02111-1307, USA. -*/ - -/** - * @file transport/plugin_transport_http.c - * @brief http transport service plugin - * @author Matthias Wachs - */ - -#include "plugin_transport_http.h" - -/** - * After how long do we expire an address that we - * learned from another peer if it is not reconfirmed - * by anyone? - */ -#define LEARNED_ADDRESS_EXPIRATION GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_HOURS, 6) - -/** - * Wrapper to manage IPv4 addresses - */ -struct IPv4HttpAddressWrapper -{ - /** - * Linked list next - */ - struct IPv4HttpAddressWrapper *next; - - /** - * Linked list previous - */ - struct IPv4HttpAddressWrapper *prev; - - struct IPv4HttpAddress addr; -}; - -/** - * Wrapper for IPv4 addresses. - */ -struct IPv6HttpAddressWrapper -{ - /** - * Linked list next - */ - struct IPv6HttpAddressWrapper *next; - - /** - * Linked list previous - */ - struct IPv6HttpAddressWrapper *prev; - - struct IPv6HttpAddress addr6; -}; - - -/** - * Context for address to string conversion. - */ -struct PrettyPrinterContext -{ - /** - * Function to call with the result. - */ - GNUNET_TRANSPORT_AddressStringCallback asc; - - /** - * Plugin - */ - struct Plugin *plugin; - - /** - * Clsoure for 'asc'. - */ - void *asc_cls; - - /** - * Port to add after the IP address. - */ - uint16_t port; - - uint32_t addrlen; - - int numeric; -}; - - -/** - * Encapsulation of all of the state of the plugin. - */ -struct Plugin; - -/** - * Start session timeout - */ -static void -start_session_timeout (struct Session *s); - -/** - * Increment session timeout due to activity - */ -static void -reschedule_session_timeout (struct Session *s); - -/** - * Cancel timeout - */ -static void -stop_session_timeout (struct Session *s); - -/** - * Append our port and forward the result. - * - * @param cls the 'struct PrettyPrinterContext*' - * @param hostname hostname part of the address - */ -static void -append_port (void *cls, const char *hostname) -{ - struct PrettyPrinterContext *ppc = cls; - static char rbuf[INET6_ADDRSTRLEN + 13]; - - if (hostname == NULL) - { - ppc->asc (ppc->asc_cls, NULL); - GNUNET_free (ppc); - return; - } - -#if !BUILD_HTTPS - const char *protocol = "http"; -#else - const char *protocol = "https"; -#endif - GNUNET_assert ((strlen (hostname) + 7) < (INET6_ADDRSTRLEN + 13)); - if (ppc->addrlen == sizeof (struct IPv6HttpAddress)) - { - if (ppc->numeric == GNUNET_YES) - GNUNET_snprintf (rbuf, sizeof (rbuf), "%s://[%s]:%u/", protocol, hostname, ppc->port); - else - { - if (strchr(hostname, ':') != NULL) - GNUNET_snprintf (rbuf, sizeof (rbuf), "%s://[%s]:%u/", protocol, hostname, ppc->port); - else - GNUNET_snprintf (rbuf, sizeof (rbuf), "%s://%s:%u/", protocol, hostname, ppc->port); - } - } - else if (ppc->addrlen == sizeof (struct IPv4HttpAddress)) - GNUNET_snprintf (rbuf, sizeof (rbuf), "%s://%s:%u/", protocol, hostname, ppc->port); - ppc->asc (ppc->asc_cls, rbuf); -} - - - - - -/** - * Convert the transports address to a nice, human-readable - * format. - * - * @param cls closure - * @param type name of the transport that generated the address - * @param addr one of the addresses of the host, NULL for the last address - * the specific address format depends on the transport - * @param addrlen length of the address - * @param numeric should (IP) addresses be displayed in numeric form? - * @param timeout after how long should we give up? - * @param asc function to call on each string - * @param asc_cls closure for asc - */ -static void -http_plugin_address_pretty_printer (void *cls, const char *type, - const void *addr, size_t addrlen, - int numeric, - struct GNUNET_TIME_Relative timeout, - GNUNET_TRANSPORT_AddressStringCallback asc, - void *asc_cls) -{ - GNUNET_assert (cls != NULL); - struct PrettyPrinterContext *ppc; - const void *sb; - struct sockaddr_in s4; - struct sockaddr_in6 s6; - size_t sbs; - uint16_t port = 0; - - if ((addrlen == sizeof (struct IPv6HttpAddress)) && (addr != NULL)) - { - struct IPv6HttpAddress *a6 = (struct IPv6HttpAddress *) addr; - s6.sin6_family = AF_INET6; - s6.sin6_addr = a6->ipv6_addr; - s6.sin6_port = a6->u6_port; -#if HAVE_SOCKADDR_IN_SIN_LEN - s6.sin6_len = sizeof (struct sockaddr_in6); -#endif - sb = &s6; - sbs = sizeof (struct sockaddr_in6); - port = ntohs (a6->u6_port); - - } - else if ((addrlen == sizeof (struct IPv4HttpAddress)) && (addr != NULL)) - { - struct IPv4HttpAddress *a4 = (struct IPv4HttpAddress *) addr; - - s4.sin_family = AF_INET; - s4.sin_addr.s_addr = a4->ipv4_addr; - s4.sin_port = a4->u4_port; -#if HAVE_SOCKADDR_IN_SIN_LEN - s4.sin_len = sizeof (struct sockaddr_in); -#endif - sb = &s4; - sbs = sizeof (struct sockaddr_in); - port = ntohs (a4->u4_port); - } - else if (0 == addrlen) - { - asc (asc_cls, "<inbound connection>"); - asc (asc_cls, NULL); - return; - } - else - { - /* invalid address */ - GNUNET_break_op (0); - asc (asc_cls, NULL); - return; - } - ppc = GNUNET_malloc (sizeof (struct PrettyPrinterContext)); - ppc->asc = asc; - ppc->asc_cls = asc_cls; - ppc->port = port; - ppc->plugin = cls; - ppc->addrlen = addrlen; - ppc->numeric = numeric; - GNUNET_RESOLVER_hostname_get (sb, sbs, !numeric, timeout, &append_port, ppc); -} - - - -/** - * Another peer has suggested an address for this - * peer and transport plugin. Check that this could be a valid - * address. If so, consider adding it to the list - * of addresses. - * - * @param cls closure - * @param addr pointer to the address - * @param addrlen length of addr - * @return GNUNET_OK if this is a plausible address for this peer - * and transport - */ -static int -http_plugin_address_suggested (void *cls, const void *addr, size_t addrlen) -{ - struct Plugin *plugin = cls; - struct IPv4HttpAddressWrapper *w_tv4 = plugin->ipv4_addr_head; - struct IPv6HttpAddressWrapper *w_tv6 = plugin->ipv6_addr_head; - - GNUNET_assert (cls != NULL); - if ((addrlen != sizeof (struct sockaddr_in)) || - (addrlen != sizeof (struct sockaddr_in6))) - return GNUNET_SYSERR; - - if (addrlen == sizeof (struct IPv4HttpAddress)) - { - struct IPv4HttpAddress *a4 = (struct IPv4HttpAddress *) addr; - - while (w_tv4 != NULL) - { - if ((0 == - memcmp (&w_tv4->addr.ipv4_addr, &a4->ipv4_addr, - sizeof (struct in_addr))) && - (w_tv4->addr.u4_port == a4->u4_port)) - break; - w_tv4 = w_tv4->next; - } - if (w_tv4 != NULL) - return GNUNET_OK; - else - return GNUNET_SYSERR; - } - if (addrlen == sizeof (struct sockaddr_in6)) - { - struct IPv6HttpAddress *a6 = (struct IPv6HttpAddress *) addr; - - while (w_tv6 != NULL) - { - if ((0 == - memcmp (&w_tv6->addr6.ipv6_addr, &a6->ipv6_addr, - sizeof (struct in6_addr))) && - (w_tv6->addr6.u6_port == a6->u6_port)) - break; - w_tv6 = w_tv6->next; - } - if (w_tv6 != NULL) - return GNUNET_OK; - else - return GNUNET_SYSERR; - } - return GNUNET_OK; -} - -struct GNUNET_TIME_Relative -http_plugin_receive (void *cls, const struct GNUNET_PeerIdentity *peer, - const struct GNUNET_MessageHeader *message, - struct Session *session, const char *sender_address, - uint16_t sender_address_len) -{ - struct Session *s = cls; - struct Plugin *plugin = s->plugin; - struct GNUNET_TIME_Relative delay; - struct GNUNET_ATS_Information atsi[2]; - - atsi[0].type = htonl (GNUNET_ATS_QUALITY_NET_DISTANCE); - atsi[0].value = htonl (1); - atsi[1].type = htonl (GNUNET_ATS_NETWORK_TYPE); - atsi[1].value = session->ats_address_network_type; - GNUNET_break (session->ats_address_network_type != ntohl (GNUNET_ATS_NET_UNSPECIFIED)); - - reschedule_session_timeout (session); - - delay = - plugin->env->receive (plugin->env->cls, &s->target, message, - (const struct GNUNET_ATS_Information *) &atsi, - 2, s, s->addr, s->addrlen); - return delay; -} - - -/** - * Function called to convert a string address to - * a binary address. - * - * @param cls closure ('struct Plugin*') - * @param addr string address - * @param addrlen length of the address - * @param buf location to store the buffer - * If the function returns GNUNET_SYSERR, its contents are undefined. - * @param added length of created address - * @return GNUNET_OK on success, GNUNET_SYSERR on failure - */ -int -http_string_to_address (void *cls, - const char *addr, - uint16_t addrlen, - void **buf, - size_t *added) -{ -#if !BUILD_HTTPS - char *protocol = "http"; -#else - char *protocol = "https"; -#endif - char *addr_str = NULL; - struct sockaddr_in addr_4; - struct sockaddr_in6 addr_6; - struct IPv4HttpAddress * http_4addr; - struct IPv6HttpAddress * http_6addr; - - if ((NULL == addr) || (addrlen == 0)) - { - GNUNET_break (0); - return GNUNET_SYSERR; - } - - if ('\0' != addr[addrlen - 1]) - { - GNUNET_break (0); - return GNUNET_SYSERR; - } - - if (strlen (addr) != addrlen - 1) - { - GNUNET_break (0); - return GNUNET_SYSERR; - } - - /* protocoll + "://" + ":" */ - if (addrlen <= (strlen (protocol) + 4)) - { - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "Invalid address string `%s' to convert to address\n", - addr); - GNUNET_break (0); - return GNUNET_SYSERR; - } - - if (NULL == (addr_str = strstr(addr, "://"))) - { - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "Invalid address string `%s' to convert to address\n", - addr); - GNUNET_break (0); - return GNUNET_SYSERR; - } - addr_str = &addr_str[3]; - - if (addr_str[strlen(addr_str)-1] == '/') - addr_str[strlen(addr_str)-1] = '\0'; - - if (GNUNET_OK == GNUNET_STRINGS_to_address_ipv4(addr_str, strlen(addr_str), &addr_4)) - { - http_4addr = GNUNET_malloc (sizeof (struct IPv4HttpAddress)); - http_4addr->u4_port = addr_4.sin_port; - http_4addr->ipv4_addr = (uint32_t) addr_4.sin_addr.s_addr; - (*buf) = http_4addr; - (*added) = sizeof (struct IPv4HttpAddress); - return GNUNET_OK; - } - if (GNUNET_OK == GNUNET_STRINGS_to_address_ipv6(addr_str, strlen(addr_str), &addr_6)) - { - http_6addr = GNUNET_malloc (sizeof (struct IPv6HttpAddress)); - http_6addr->u6_port = addr_6.sin6_port; - http_6addr->ipv6_addr = addr_6.sin6_addr; - (*buf) = http_6addr; - (*added) = sizeof (struct IPv6HttpAddress); - return GNUNET_OK; - } - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - "Invalid address string `%s' to convert to address\n", - addr_str); - GNUNET_break (0); - return GNUNET_SYSERR; -} - - -/** - * Function called for a quick conversion of the binary address to - * a numeric address. Note that the caller must not free the - * address and that the next call to this function is allowed - * to override the address again. - * - * @param cls closure - * @param addr binary address - * @param addrlen length of the address - * @return string representing the same address - */ -const char * -http_plugin_address_to_string (void *cls, const void *addr, size_t addrlen) -{ - - struct IPv4HttpAddress *a4; - struct IPv6HttpAddress *a6; - char *address; - static char rbuf[INET6_ADDRSTRLEN + 13]; - uint16_t port; - int res = 0; - - if (addrlen == sizeof (struct IPv6HttpAddress)) - { - a6 = (struct IPv6HttpAddress *) addr; - address = GNUNET_malloc (INET6_ADDRSTRLEN); - GNUNET_assert (NULL != - inet_ntop (AF_INET6, &a6->ipv6_addr, address, - INET6_ADDRSTRLEN)); - port = ntohs (a6->u6_port); - } - else if (addrlen == sizeof (struct IPv4HttpAddress)) - { - a4 = (struct IPv4HttpAddress *) addr; - address = GNUNET_malloc (INET_ADDRSTRLEN); - GNUNET_assert (NULL != - inet_ntop (AF_INET, &(a4->ipv4_addr), address, - INET_ADDRSTRLEN)); - port = ntohs (a4->u4_port); - } - else - { - /* invalid address */ - GNUNET_break (0); - return NULL; - } -#if !BUILD_HTTPS - char *protocol = "http"; -#else - char *protocol = "https"; -#endif - - GNUNET_assert (strlen (address) + 7 < (INET6_ADDRSTRLEN + 13)); - if (addrlen == sizeof (struct IPv6HttpAddress)) - res = - GNUNET_snprintf (rbuf, sizeof (rbuf), "%s://[%s]:%u/", protocol, - address, port); - else if (addrlen == sizeof (struct IPv4HttpAddress)) - res = - GNUNET_snprintf (rbuf, sizeof (rbuf), "%s://%s:%u/", protocol, address, - port); - - GNUNET_free (address); - GNUNET_assert (res != 0); - return rbuf; -} - - -struct Session * -lookup_session_old (struct Plugin *plugin, const struct GNUNET_PeerIdentity *target, - struct Session *session, const void *addr, size_t addrlen, - int force_address) -{ - struct Session *t; - int e_peer; - int e_addr; - - for (t = plugin->head; NULL != t; t = t->next) - { -#if 0 - GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name, - "Comparing peer `%s' address `%s' len %i session %p to \n", - GNUNET_i2s (target), GNUNET_a2s (addr, addrlen), addrlen, - session); - GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name, - "peer `%s' address `%s' len %i session %p \n\n", - GNUNET_i2s (&t->target), GNUNET_a2s (t->addr, t->addrlen), - t->addrlen, t); - GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name, "memcmp %i \n", - memcmp (addr, t->addr, addrlen)); -#endif - e_peer = GNUNET_NO; - e_addr = GNUNET_NO; - if (0 == memcmp (target, &t->target, sizeof (struct GNUNET_PeerIdentity))) - { - e_peer = GNUNET_YES; - if ( (addrlen == t->addrlen) && - (0 == memcmp (addr, t->addr, addrlen)) ) - e_addr = GNUNET_YES; - if ( (t == session) && - (t->addrlen == session->addrlen) && - (0 == memcmp (session->addr, t->addr, t->addrlen)) ) - e_addr = GNUNET_YES; - } - - if ( ((e_peer == GNUNET_YES) && (force_address == GNUNET_NO)) || - ((e_peer == GNUNET_YES) && (force_address == GNUNET_YES) && (e_addr == GNUNET_YES)) || - ((e_peer == GNUNET_YES) && (force_address == GNUNET_SYSERR)) ) - return t; - } - return NULL; -} - - -struct Session * -lookup_session (struct Plugin *plugin, - const struct GNUNET_HELLO_Address *address) -{ - struct Session *pos; - - for (pos = plugin->head; NULL != pos; pos = pos->next) - if ( (0 == memcmp (&address->peer, &pos->target, sizeof (struct GNUNET_PeerIdentity))) && - (address->address_length == pos->addrlen) && - (0 == memcmp (address->address, pos->addr, pos->addrlen)) ) - return pos; - return NULL; -} - - -int -exist_session (struct Plugin *plugin, struct Session *s) -{ - struct Session * head; - - GNUNET_assert (NULL != plugin); - GNUNET_assert (NULL != s); - - for (head = plugin->head; head != NULL; head = head->next) - { - if (head == s) - return GNUNET_YES; - } - return GNUNET_NO; -} - - -void -delete_session (struct Session *s) -{ - stop_session_timeout(s); - - if (s->msg_tk != NULL) - { - GNUNET_SERVER_mst_destroy (s->msg_tk); - s->msg_tk = NULL; - } - GNUNET_free (s->addr); - GNUNET_free_non_null (s->server_recv); - GNUNET_free_non_null (s->server_send); - GNUNET_free (s); -} - - -struct Session * -create_session (struct Plugin *plugin, const struct GNUNET_PeerIdentity *target, - const void *addr, size_t addrlen) -{ - struct Session *s = NULL; - - GNUNET_assert ((addrlen == sizeof (struct IPv6HttpAddress)) || - (addrlen == sizeof (struct IPv4HttpAddress))); - s = GNUNET_malloc (sizeof (struct Session)); - memcpy (&s->target, target, sizeof (struct GNUNET_PeerIdentity)); - s->plugin = plugin; - s->addr = GNUNET_malloc (addrlen); - memcpy (s->addr, addr, addrlen); - s->addrlen = addrlen; - s->ats_address_network_type = htonl (GNUNET_ATS_NET_UNSPECIFIED); - start_session_timeout(s); - return s; -} - - -void -notify_session_end (void *cls, const struct GNUNET_PeerIdentity *peer, - struct Session *s) -{ - struct Plugin *plugin = cls; - - plugin->env->session_end (plugin->env->cls, peer, s); - GNUNET_CONTAINER_DLL_remove (plugin->head, plugin->tail, s); - delete_session (s); -} - - -/** - * Creates a new outbound session the transport service will use to send data to the - * peer - * - * @param cls the plugin - * @param address the address - * @return the session or NULL of max connections exceeded - */ -static struct Session * -http_get_session (void *cls, - const struct GNUNET_HELLO_Address *address) -{ - struct Plugin *plugin = cls; - struct Session * s = NULL; - struct GNUNET_ATS_Information ats; - size_t addrlen; - - GNUNET_assert (plugin != NULL); - GNUNET_assert (address != NULL); - GNUNET_assert (address->address != NULL); - - ats.type = htonl (GNUNET_ATS_ARRAY_TERMINATOR); - ats.value = htonl (GNUNET_ATS_ARRAY_TERMINATOR); - - /* find existing session */ - s = lookup_session (plugin, address); - if (s != NULL) - return s; - - if (plugin->max_connections <= plugin->cur_connections) - { - GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, plugin->name, - "Maximum number of connections reached, " - "cannot connect to peer `%s'\n", GNUNET_i2s (&address->peer)); - return NULL; - } - - /* create new session */ - addrlen = address->address_length; - - GNUNET_assert ((addrlen == sizeof (struct IPv6HttpAddress)) || - (addrlen == sizeof (struct IPv4HttpAddress))); - - s = create_session (plugin, &address->peer, address->address, address->address_length); - - /* Get ATS type */ - if (addrlen == sizeof (struct IPv4HttpAddress)) - { - struct IPv4HttpAddress *a4 = (struct IPv4HttpAddress *) address->address; - struct sockaddr_in s4; - - s4.sin_family = AF_INET; - s4.sin_addr.s_addr = a4->ipv4_addr; - s4.sin_port = a4->u4_port; -#if HAVE_SOCKADDR_IN_SIN_LEN - s4.sin_len = sizeof (struct sockaddr_in); -#endif - ats = plugin->env->get_address_type (plugin->env->cls, (const struct sockaddr *) &s4, sizeof (struct sockaddr_in)); - } - if (addrlen == sizeof (struct IPv6HttpAddress)) - { - struct IPv6HttpAddress *a6 = (struct IPv6HttpAddress *) address->address; - struct sockaddr_in6 s6; - - s6.sin6_family = AF_INET6; - s6.sin6_addr = a6->ipv6_addr; - s6.sin6_port = a6->u6_port; -#if HAVE_SOCKADDR_IN_SIN_LEN - s6.sin6_len = sizeof (struct sockaddr_in6); -#endif - ats = plugin->env->get_address_type (plugin->env->cls, (const struct sockaddr *) &s6, sizeof (struct sockaddr_in6)); - } - s->ats_address_network_type = ats.value; - - /* add new session */ - GNUNET_CONTAINER_DLL_insert (plugin->head, plugin->tail, s); - /* initiate new connection */ - if (GNUNET_SYSERR == client_connect (s)) - { - GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name, - "Cannot connect to peer `%s' address `%s''\n", - http_plugin_address_to_string(NULL, s->addr, s->addrlen), - GNUNET_i2s (&s->target)); - GNUNET_CONTAINER_DLL_remove (plugin->head, plugin->tail, s); - delete_session (s); - return NULL; - } - - return s; -} - - -/** - * Function that can be used by the transport service to transmit - * a message using the plugin. Note that in the case of a - * peer disconnecting, the continuation MUST be called - * prior to the disconnect notification itself. This function - * will be called with this peer's HELLO message to initiate - * a fresh connection to another peer. - * - * @param cls closure - * @param session which session must be used - * @param msgbuf the message to transmit - * @param msgbuf_size number of bytes in 'msgbuf' - * @param priority how important is the message (most plugins will - * ignore message priority and just FIFO) - * @param to how long to wait at most for the transmission (does not - * require plugins to discard the message after the timeout, - * just advisory for the desired delay; most plugins will ignore - * this as well) - * @param cont continuation to call once the message has - * been transmitted (or if the transport is ready - * for the next transmission call; or if the - * peer disconnected...); can be NULL - * @param cont_cls closure for cont - * @return number of bytes used (on the physical network, with overheads); - * -1 on hard errors (i.e. address invalid); 0 is a legal value - * and does NOT mean that the message was not transmitted (DV) - */ -static ssize_t -http_plugin_send (void *cls, - struct Session *session, - const char *msgbuf, size_t msgbuf_size, - unsigned int priority, - struct GNUNET_TIME_Relative to, - GNUNET_TRANSPORT_TransmitContinuation cont, void *cont_cls) -{ - struct Plugin *plugin = cls; - struct HTTP_Message *msg; - struct Session *tmp; - size_t res = -1; - - GNUNET_assert (plugin != NULL); - GNUNET_assert (session != NULL); - - /* lookup if session is really existing */ - tmp = plugin->head; - while (tmp != NULL) - { - if ((tmp == session) && - (0 == memcmp (&session->target, &tmp->target, sizeof (struct GNUNET_PeerIdentity))) && - (session->addrlen == tmp->addrlen) && - (0 == memcmp (session->addr, tmp->addr, tmp->addrlen))) - break; - tmp = tmp->next; - } - if (tmp == NULL) - { - GNUNET_break_op (0); - return res; - } - - /* create new message and schedule */ - msg = GNUNET_malloc (sizeof (struct HTTP_Message) + msgbuf_size); - msg->next = NULL; - msg->size = msgbuf_size; - msg->pos = 0; - msg->buf = (char *) &msg[1]; - msg->transmit_cont = cont; - msg->transmit_cont_cls = cont_cls; - memcpy (msg->buf, msgbuf, msgbuf_size); - - reschedule_session_timeout (session); - - if (session->inbound == GNUNET_NO) - { - GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name, - "Using outbound client session %p to send to `%s'\n", session, - GNUNET_i2s (&session->target)); - client_send (session, msg); - res = msgbuf_size; - } - if (session->inbound == GNUNET_YES) - { - GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name, - "Using inbound server %p session to send to `%s'\n", session, - GNUNET_i2s (&session->target)); - server_send (session, msg); - res = msgbuf_size; - } - return res; - -} - - -/** - * Function that can be used to force the plugin to disconnect - * from the given peer and cancel all previous transmissions - * (and their continuationc). - * - * @param cls closure - * @param target peer from which to disconnect - */ -static void -http_plugin_disconnect (void *cls, const struct GNUNET_PeerIdentity *target) -{ - struct Plugin *plugin = cls; - struct Session *next = NULL; - struct Session *s = plugin->head; - - GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name, - "Transport tells me to disconnect `%s'\n", - GNUNET_i2s (target)); - while (s != NULL) - { - next = s->next; - if (0 == memcmp (target, &s->target, sizeof (struct GNUNET_PeerIdentity))) - { - if (s->inbound == GNUNET_NO) - GNUNET_assert (GNUNET_OK == client_disconnect (s)); - else - GNUNET_assert (GNUNET_OK == server_disconnect (s)); - GNUNET_CONTAINER_DLL_remove (plugin->head, plugin->tail, s); - - struct HTTP_Message *msg = s->msg_head; - struct HTTP_Message *tmp = NULL; - - while (msg != NULL) - { - tmp = msg->next; - - GNUNET_CONTAINER_DLL_remove (s->msg_head, s->msg_tail, msg); - if (msg->transmit_cont != NULL) - { - msg->transmit_cont (msg->transmit_cont_cls, target, GNUNET_SYSERR); - } - GNUNET_free (msg); - msg = tmp; - } - - delete_session (s); - } - s = next; - } -} - - -static void * -find_address (struct Plugin *plugin, const struct sockaddr *addr, socklen_t addrlen) -{ - int af; - struct IPv4HttpAddressWrapper *w_t4 = NULL; - struct IPv6HttpAddressWrapper *w_t6 = NULL; - - af = addr->sa_family; - switch (af) - { - case AF_INET: - w_t4 = plugin->ipv4_addr_head; - struct sockaddr_in *a4 = (struct sockaddr_in *) addr; - - while (w_t4 != NULL) - { - int res = memcmp (&w_t4->addr.ipv4_addr, - &a4->sin_addr, - sizeof (struct in_addr)); - - if (res == 0) - { - if (a4->sin_port != w_t4->addr.u4_port) - res = -1; - } - - if (0 == res) - break; - w_t4 = w_t4->next; - } - return w_t4; - break; - case AF_INET6: - w_t6 = plugin->ipv6_addr_head; - struct sockaddr_in6 *a6 = (struct sockaddr_in6 *) addr; - - while (w_t6) - { - int res = memcmp (&w_t6->addr6.ipv6_addr, &a6->sin6_addr, - sizeof (struct in6_addr)); - - if (res == 0) - { - if (a6->sin6_port != w_t6->addr6.u6_port) - res = -1; - } - if (0 == res) - break; - w_t6 = w_t6->next; - } - return w_t6; - break; - default: - return NULL; - } - return NULL; -} - - -static void -nat_add_address (void *cls, int add_remove, const struct sockaddr *addr, - socklen_t addrlen) -{ - struct Plugin *plugin = cls; - struct IPv4HttpAddressWrapper *w_t4 = NULL; - struct IPv6HttpAddressWrapper *w_t6 = NULL; - int af; - - af = addr->sa_family; - switch (af) - { - case AF_INET: - w_t4 = find_address (plugin, addr, addrlen); - if (w_t4 == NULL) - { - struct sockaddr_in *a4 = (struct sockaddr_in *) addr; - w_t4 = GNUNET_malloc (sizeof (struct IPv4HttpAddressWrapper)); - memcpy (&w_t4->addr.ipv4_addr, &a4->sin_addr, sizeof (struct in_addr)); - w_t4->addr.u4_port = a4->sin_port; - - GNUNET_CONTAINER_DLL_insert (plugin->ipv4_addr_head, - plugin->ipv4_addr_tail, w_t4); - - GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name, - "Notifying transport to add IPv4 address `%s'\n", - http_plugin_address_to_string (NULL, &w_t4->addr, - sizeof (struct - IPv4HttpAddress))); - plugin->env->notify_address (plugin->env->cls, add_remove, &w_t4->addr, - sizeof (struct IPv4HttpAddress)); - } - break; - case AF_INET6: - w_t6 = find_address (plugin, addr, addrlen); - if (w_t6 == NULL) - { - w_t6 = GNUNET_malloc (sizeof (struct IPv6HttpAddressWrapper)); - struct sockaddr_in6 *a6 = (struct sockaddr_in6 *) addr; - memcpy (&w_t6->addr6.ipv6_addr, &a6->sin6_addr, sizeof (struct in6_addr)); - w_t6->addr6.u6_port = a6->sin6_port; - - GNUNET_CONTAINER_DLL_insert (plugin->ipv6_addr_head, - plugin->ipv6_addr_tail, w_t6); - - GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name, - "Notifying transport to add IPv6 address `%s'\n", - http_plugin_address_to_string (NULL, &w_t6->addr6, - sizeof (struct - IPv6HttpAddress))); - plugin->env->notify_address (plugin->env->cls, add_remove, &w_t6->addr6, - sizeof (struct IPv6HttpAddress)); - } - break; - default: - return; - } - -} - - -static void -nat_remove_address (void *cls, int add_remove, const struct sockaddr *addr, - socklen_t addrlen) -{ - struct Plugin *plugin = cls; - struct IPv4HttpAddressWrapper *w_t4 = NULL; - struct IPv6HttpAddressWrapper *w_t6 = NULL; - int af; - - af = addr->sa_family; - switch (af) - { - case AF_INET: - w_t4 = find_address (plugin, addr, addrlen); - if (w_t4 == NULL) - return; - - - GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name, - "Notifying transport to remove IPv4 address `%s'\n", - http_plugin_address_to_string (NULL, &w_t4->addr, - sizeof (struct - IPv4HttpAddress))); - plugin->env->notify_address (plugin->env->cls, add_remove, &w_t4->addr, - sizeof (struct IPv4HttpAddress)); - - GNUNET_CONTAINER_DLL_remove (plugin->ipv4_addr_head, plugin->ipv4_addr_tail, - w_t4); - GNUNET_free (w_t4); - break; - case AF_INET6: - w_t6 = find_address (plugin, addr, addrlen); - if (w_t6 == NULL) - return; - - GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name, - "Notifying transport to remove IPv6 address `%s'\n", - http_plugin_address_to_string (NULL, &w_t6->addr6, - sizeof (struct - IPv6HttpAddress))); - - plugin->env->notify_address (plugin->env->cls, add_remove, &w_t6->addr6, - sizeof (struct IPv6HttpAddress)); - - GNUNET_CONTAINER_DLL_remove (plugin->ipv6_addr_head, plugin->ipv6_addr_tail, - w_t6); - GNUNET_free (w_t6); - break; - default: - return; - } -} - - -/** - * Our external IP address/port mapping has changed. - * - * @param cls closure, the 'struct LocalAddrList' - * @param add_remove GNUNET_YES to mean the new public IP address, GNUNET_NO to mean - * the previous (now invalid) one - * @param addr either the previous or the new public IP address - * @param addrlen actual lenght of the address - */ -static void -nat_port_map_callback (void *cls, int add_remove, const struct sockaddr *addr, - socklen_t addrlen) -{ - GNUNET_assert (cls != NULL); - struct Plugin *plugin = cls; - - GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name, - "NPMC called %s to address `%s'\n", - (add_remove == GNUNET_NO) ? "remove" : "add", - GNUNET_a2s (addr, addrlen)); - - switch (add_remove) - { - case GNUNET_YES: - nat_add_address (cls, add_remove, addr, addrlen); - break; - case GNUNET_NO: - nat_remove_address (cls, add_remove, addr, addrlen); - break; - } -} - - -void -http_check_ipv6 (struct Plugin *plugin) -{ - struct GNUNET_NETWORK_Handle *desc = NULL; - - if (plugin->ipv6 == GNUNET_YES) - { - /* probe IPv6 support */ - desc = GNUNET_NETWORK_socket_create (PF_INET6, SOCK_STREAM, 0); - if (NULL == desc) - { - if ((errno == ENOBUFS) || (errno == ENOMEM) || (errno == ENFILE) || - (errno == EACCES)) - { - GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR, "socket"); - } - GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, plugin->name, - _ - ("Disabling IPv6 since it is not supported on this system!\n")); - plugin->ipv6 = GNUNET_NO; - } - else - { - GNUNET_break (GNUNET_OK == GNUNET_NETWORK_socket_close (desc)); - desc = NULL; - } - - GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name, - "Testing IPv6 on this system: %s\n", - (plugin->ipv6 == GNUNET_YES) ? "successful" : "failed"); - } -} - - -int -http_get_addresses (struct Plugin *plugin, const char *serviceName, - const struct GNUNET_CONFIGURATION_Handle *cfg, - struct sockaddr ***addrs, socklen_t ** addr_lens) -{ - int disablev6; - unsigned long long port; - struct addrinfo hints; - struct addrinfo *res; - struct addrinfo *pos; - struct addrinfo *next; - unsigned int i; - int resi; - int ret; - struct sockaddr **saddrs; - socklen_t *saddrlens; - char *hostname; - - *addrs = NULL; - *addr_lens = NULL; - - disablev6 = !plugin->ipv6; - - port = 0; - if (GNUNET_CONFIGURATION_have_value (cfg, serviceName, "PORT")) - { - GNUNET_break (GNUNET_OK == - GNUNET_CONFIGURATION_get_value_number (cfg, serviceName, - "PORT", &port)); - if (port > 65535) - { - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - _ - ("Require valid port number for service in configuration!\n")); - return GNUNET_SYSERR; - } - } - - if (GNUNET_CONFIGURATION_have_value (cfg, serviceName, "BINDTO")) - { - GNUNET_break (GNUNET_OK == - GNUNET_CONFIGURATION_get_value_string (cfg, serviceName, - "BINDTO", &hostname)); - } - else - hostname = NULL; - - if (hostname != NULL) - { - GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name, - "Resolving `%s' since that is where `%s' will bind to.\n", - hostname, serviceName); - memset (&hints, 0, sizeof (struct addrinfo)); - if (disablev6) - hints.ai_family = AF_INET; - if ((0 != (ret = getaddrinfo (hostname, NULL, &hints, &res))) || - (res == NULL)) - { - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("Failed to resolve `%s': %s\n"), - hostname, gai_strerror (ret)); - GNUNET_free (hostname); - return GNUNET_SYSERR; - } - next = res; - i = 0; - while (NULL != (pos = next)) - { - next = pos->ai_next; - if ((disablev6) && (pos->ai_family == AF_INET6)) - continue; - i++; - } - if (0 == i) - { - GNUNET_log (GNUNET_ERROR_TYPE_ERROR, - _("Failed to find %saddress for `%s'.\n"), - disablev6 ? "IPv4 " : "", hostname); - freeaddrinfo (res); - GNUNET_free (hostname); - return GNUNET_SYSERR; - } - resi = i; - saddrs = GNUNET_malloc ((resi + 1) * sizeof (struct sockaddr *)); - saddrlens = GNUNET_malloc ((resi + 1) * sizeof (socklen_t)); - i = 0; - next = res; - while (NULL != (pos = next)) - { - next = pos->ai_next; - if ((disablev6) && (pos->ai_family == AF_INET6)) - continue; - if ((pos->ai_protocol != IPPROTO_TCP) && (pos->ai_protocol != 0)) - continue; /* not TCP */ - if ((pos->ai_socktype != SOCK_STREAM) && (pos->ai_socktype != 0)) - continue; /* huh? */ - GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name, - "Service will bind to `%s'\n", GNUNET_a2s (pos->ai_addr, - pos->ai_addrlen)); - if (pos->ai_family == AF_INET) - { - GNUNET_assert (pos->ai_addrlen == sizeof (struct sockaddr_in)); - saddrlens[i] = pos->ai_addrlen; - saddrs[i] = GNUNET_malloc (saddrlens[i]); - memcpy (saddrs[i], pos->ai_addr, saddrlens[i]); - ((struct sockaddr_in *) saddrs[i])->sin_port = htons (port); - } - else - { - GNUNET_assert (pos->ai_family == AF_INET6); - GNUNET_assert (pos->ai_addrlen == sizeof (struct sockaddr_in6)); - saddrlens[i] = pos->ai_addrlen; - saddrs[i] = GNUNET_malloc (saddrlens[i]); - memcpy (saddrs[i], pos->ai_addr, saddrlens[i]); - ((struct sockaddr_in6 *) saddrs[i])->sin6_port = htons (port); - } - i++; - } - GNUNET_free (hostname); - freeaddrinfo (res); - resi = i; - } - else - { - /* will bind against everything, just set port */ - if (disablev6) - { - /* V4-only */ - resi = 1; - i = 0; - saddrs = GNUNET_malloc ((resi + 1) * sizeof (struct sockaddr *)); - saddrlens = GNUNET_malloc ((resi + 1) * sizeof (socklen_t)); - - saddrlens[i] = sizeof (struct sockaddr_in); - saddrs[i] = GNUNET_malloc (saddrlens[i]); -#if HAVE_SOCKADDR_IN_SIN_LEN - ((struct sockaddr_in *) saddrs[i])->sin_len = saddrlens[i]; -#endif - ((struct sockaddr_in *) saddrs[i])->sin_family = AF_INET; - ((struct sockaddr_in *) saddrs[i])->sin_port = htons (port); - } - else - { - /* dual stack */ - resi = 2; - saddrs = GNUNET_malloc ((resi + 1) * sizeof (struct sockaddr *)); - saddrlens = GNUNET_malloc ((resi + 1) * sizeof (socklen_t)); - i = 0; - saddrlens[i] = sizeof (struct sockaddr_in6); - saddrs[i] = GNUNET_malloc (saddrlens[i]); -#if HAVE_SOCKADDR_IN_SIN_LEN - ((struct sockaddr_in6 *) saddrs[i])->sin6_len = saddrlens[0]; -#endif - ((struct sockaddr_in6 *) saddrs[i])->sin6_family = AF_INET6; - ((struct sockaddr_in6 *) saddrs[i])->sin6_port = htons (port); - i++; - saddrlens[i] = sizeof (struct sockaddr_in); - saddrs[i] = GNUNET_malloc (saddrlens[i]); -#if HAVE_SOCKADDR_IN_SIN_LEN - ((struct sockaddr_in *) saddrs[i])->sin_len = saddrlens[1]; -#endif - ((struct sockaddr_in *) saddrs[i])->sin_family = AF_INET; - ((struct sockaddr_in *) saddrs[i])->sin_port = htons (port); - } - } - *addrs = saddrs; - *addr_lens = saddrlens; - return resi; -} - -static void -start_report_addresses (struct Plugin *plugin) -{ - int res = GNUNET_OK; - struct sockaddr **addrs; - socklen_t *addrlens; - - res = - http_get_addresses (plugin, plugin->name, plugin->env->cfg, &addrs, - &addrlens); - GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name, - _("Found %u addresses to report to NAT service\n"), res); - - if (res != GNUNET_SYSERR) - { - plugin->nat = - GNUNET_NAT_register (plugin->env->cfg, GNUNET_YES, plugin->port, - (unsigned int) res, - (const struct sockaddr **) addrs, addrlens, - &nat_port_map_callback, NULL, plugin); - while (res > 0) - { - res--; -#if 0 - GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name, _("FREEING %s\n"), - GNUNET_a2s (addrs[res], addrlens[res])); -#endif - GNUNET_assert (addrs[res] != NULL); - GNUNET_free (addrs[res]); - } - GNUNET_free_non_null (addrs); - GNUNET_free_non_null (addrlens); - } - else - { - plugin->nat = - GNUNET_NAT_register (plugin->env->cfg, GNUNET_YES, 0, 0, NULL, NULL, - NULL, NULL, plugin); - } -} - - -static void -stop_report_addresses (struct Plugin *plugin) -{ - /* Stop NAT handle */ - GNUNET_NAT_unregister (plugin->nat); - - /* Clean up addresses */ - struct IPv4HttpAddressWrapper *w_t4; - struct IPv6HttpAddressWrapper *w_t6; - - while (plugin->ipv4_addr_head != NULL) - { - w_t4 = plugin->ipv4_addr_head; - GNUNET_CONTAINER_DLL_remove (plugin->ipv4_addr_head, plugin->ipv4_addr_tail, - w_t4); - GNUNET_free (w_t4); - } - - while (plugin->ipv6_addr_head != NULL) - { - w_t6 = plugin->ipv6_addr_head; - GNUNET_CONTAINER_DLL_remove (plugin->ipv6_addr_head, plugin->ipv6_addr_tail, - w_t6); - GNUNET_free (w_t6); - } -} - - -static int -configure_plugin (struct Plugin *plugin) -{ - int res = GNUNET_OK; - - /* Use IPv4? */ - if (GNUNET_CONFIGURATION_have_value - (plugin->env->cfg, plugin->name, "USE_IPv4")) - { - plugin->ipv4 = - GNUNET_CONFIGURATION_get_value_yesno (plugin->env->cfg, plugin->name, - "USE_IPv4"); - } - else - plugin->ipv4 = GNUNET_YES; - - /* Use IPv6? */ - if (GNUNET_CONFIGURATION_have_value - (plugin->env->cfg, plugin->name, "USE_IPv6")) - { - plugin->ipv6 = - GNUNET_CONFIGURATION_get_value_yesno (plugin->env->cfg, plugin->name, - "USE_IPv6"); - } - else - plugin->ipv6 = GNUNET_YES; - - if ((plugin->ipv4 == GNUNET_NO) && (plugin->ipv6 == GNUNET_NO)) - { - GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name, - _ - ("Neither IPv4 nor IPv6 are enabled! Fix in configuration\n"), - plugin->name); - res = GNUNET_SYSERR; - } - - /* Reading port number from config file */ - unsigned long long port; - - if ((GNUNET_OK != - GNUNET_CONFIGURATION_get_value_number (plugin->env->cfg, plugin->name, - "PORT", &port)) || (port > 65535)) - { - GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name, - _("Port is required! Fix in configuration\n"), - plugin->name); - res = GNUNET_SYSERR; - goto fail; - } - plugin->port = port; - - plugin->client_only = GNUNET_NO; - if (plugin->port == 0) - { - GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name, - _("Port 0, client only mode\n")); - plugin->client_only = GNUNET_YES; - } - - char *bind4_address = NULL; - - if ((plugin->ipv4 == GNUNET_YES) && - (GNUNET_YES == - GNUNET_CONFIGURATION_get_value_string (plugin->env->cfg, plugin->name, - "BINDTO", &bind4_address))) - { - GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name, - "Binding %s plugin to specific IPv4 address: `%s'\n", - plugin->protocol, bind4_address); - plugin->server_addr_v4 = GNUNET_malloc (sizeof (struct sockaddr_in)); - if (1 != - inet_pton (AF_INET, bind4_address, &plugin->server_addr_v4->sin_addr)) - { - GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name, - _ - ("Specific IPv4 address `%s' for plugin %s in configuration file is invalid! Binding to all addresses!\n"), - bind4_address, plugin->protocol); - GNUNET_free (plugin->server_addr_v4); - plugin->server_addr_v4 = NULL; - } - else - { - plugin->server_addr_v4->sin_family = AF_INET; - plugin->server_addr_v4->sin_port = htons (plugin->port); - } - GNUNET_free (bind4_address); - } - - - char *bind6_address = NULL; - - if ((plugin->ipv6 == GNUNET_YES) && - (GNUNET_YES == - GNUNET_CONFIGURATION_get_value_string (plugin->env->cfg, plugin->name, - "BINDTO6", &bind6_address))) - { - GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name, - "Binding %s plugin to specific IPv6 address: `%s'\n", - plugin->protocol, bind6_address); - plugin->server_addr_v6 = GNUNET_malloc (sizeof (struct sockaddr_in6)); - if (1 != - inet_pton (AF_INET6, bind6_address, &plugin->server_addr_v6->sin6_addr)) - { - GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name, - _ - ("Specific IPv6 address `%s' for plugin %s in configuration file is invalid! Binding to all addresses!\n"), - bind6_address, plugin->protocol); - GNUNET_free (plugin->server_addr_v6); - plugin->server_addr_v6 = NULL; - } - else - { - plugin->server_addr_v6->sin6_family = AF_INET6; - plugin->server_addr_v6->sin6_port = htons (plugin->port); - } - GNUNET_free (bind6_address); - } - - - /* Optional parameters */ - unsigned long long maxneigh; - - if (GNUNET_OK != - GNUNET_CONFIGURATION_get_value_number (plugin->env->cfg, plugin->name, - "MAX_CONNECTIONS", &maxneigh)) - maxneigh = 128; - plugin->max_connections = maxneigh; - -fail: - return res; -} - - -/** - * Session was idle, so disconnect it - */ -static void -session_timeout (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc) -{ - GNUNET_assert (NULL != cls); - struct Session *s = cls; - - s->timeout_task = GNUNET_SCHEDULER_NO_TASK; - - GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Session %p was idle for %llu, disconnecting\n", - s, GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value); - - /* call session destroy function */ - if (s->inbound == GNUNET_NO) - GNUNET_assert (GNUNET_OK == client_disconnect (s)); - else - GNUNET_assert (GNUNET_OK == server_disconnect (s)); - -} - - -/** - * Start session timeout - */ -static void -start_session_timeout (struct Session *s) -{ - GNUNET_assert (NULL != s); - GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == s->timeout_task); - - s->timeout_task = GNUNET_SCHEDULER_add_delayed (GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT, - &session_timeout, - s); - - GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Timeout for session %p set to %llu\n", - s, GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value); -} - - -/** - * Increment session timeout due to activity - */ -static void -reschedule_session_timeout (struct Session *s) -{ - GNUNET_assert (NULL != s); - GNUNET_assert (GNUNET_SCHEDULER_NO_TASK != s->timeout_task); - - GNUNET_SCHEDULER_cancel (s->timeout_task); - s->timeout_task = GNUNET_SCHEDULER_add_delayed (GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT, - &session_timeout, - s); - - GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Timeout rescheduled for session %p set to %llu\n", - s, GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value); -} - - -/** - * Cancel timeout - */ -static void -stop_session_timeout (struct Session *s) -{ - GNUNET_assert (NULL != s); - - if (GNUNET_SCHEDULER_NO_TASK != s->timeout_task) - { - GNUNET_SCHEDULER_cancel (s->timeout_task); - s->timeout_task = GNUNET_SCHEDULER_NO_TASK; - - GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Timeout rescheduled for session %p canceled\n", - s, GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value); - } - else - { - GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Timeout for session %p was not active\n", - s); - } -} - - -/** - * Entry point for the plugin. - */ -void * -LIBGNUNET_PLUGIN_TRANSPORT_INIT (void *cls) -{ - struct GNUNET_TRANSPORT_PluginEnvironment *env = cls; - struct GNUNET_TRANSPORT_PluginFunctions *api; - struct Plugin *plugin; - int res; - - if (NULL == env->receive) - { - /* run in 'stub' mode (i.e. as part of gnunet-peerinfo), don't fully - initialze the plugin or the API */ - api = GNUNET_malloc (sizeof (struct GNUNET_TRANSPORT_PluginFunctions)); - api->cls = NULL; - api->address_pretty_printer = &http_plugin_address_pretty_printer; - api->address_to_string = &http_plugin_address_to_string; - api->string_to_address = &http_string_to_address; - return api; - } - - plugin = GNUNET_malloc (sizeof (struct Plugin)); - plugin->env = env; - plugin->outbound_sessions = 0; - plugin->inbound_sessions = 0; - api = GNUNET_malloc (sizeof (struct GNUNET_TRANSPORT_PluginFunctions)); - api->cls = plugin; - api->disconnect = &http_plugin_disconnect; - api->address_pretty_printer = &http_plugin_address_pretty_printer; - api->check_address = &http_plugin_address_suggested; - api->address_to_string = &http_plugin_address_to_string; - api->string_to_address = &http_string_to_address; - api->get_session = &http_get_session; - api->send = &http_plugin_send; - -#if BUILD_HTTPS - plugin->name = "transport-https"; - plugin->protocol = "https"; -#else - plugin->name = "transport-http"; - plugin->protocol = "http"; -#endif - /* Configure plugin from configuration */ - res = configure_plugin (plugin); - if (res == GNUNET_SYSERR) - { - GNUNET_free_non_null (plugin->server_addr_v4); - GNUNET_free_non_null (plugin->server_addr_v6); - GNUNET_free (plugin); - GNUNET_free (api); - return NULL; - } - - /* checking IPv6 support */ - http_check_ipv6 (plugin); - - /* Start client */ - res = client_start (plugin); - if (res == GNUNET_SYSERR) - { - GNUNET_free_non_null (plugin->server_addr_v4); - GNUNET_free_non_null (plugin->server_addr_v6); - GNUNET_free (plugin); - GNUNET_free (api); - return NULL; - } - - /* Start server */ - if (plugin->client_only == GNUNET_NO) - { - res = server_start (plugin); - if (res == GNUNET_SYSERR) - { - server_stop (plugin); - client_stop (plugin); - - GNUNET_free_non_null (plugin->server_addr_v4); - GNUNET_free_non_null (plugin->server_addr_v6); - GNUNET_free (plugin); - GNUNET_free (api); - return NULL; - } - } - /* Report addresses to transport service */ - start_report_addresses (plugin); - - GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name, - "Plugin `%s' loaded\n", plugin->name); - return api; -} - - -/** - * Exit point from the plugin. - */ -void * -LIBGNUNET_PLUGIN_TRANSPORT_DONE (void *cls) -{ - struct GNUNET_TRANSPORT_PluginFunctions *api = cls; - struct Plugin *plugin = api->cls; - struct Session *s; - - if (NULL == plugin) - { - GNUNET_free (api); - return NULL; - } - - /* Stop reporting addresses to transport service */ - stop_report_addresses (plugin); - - /* cleaning up sessions */ - s = plugin->head; - while (s != NULL) - { - GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name, - "Disconnecting `%s' \n", GNUNET_i2s (&s->target)); - if (s->inbound == GNUNET_NO) - GNUNET_assert (GNUNET_OK == client_disconnect (s)); - else - GNUNET_assert (GNUNET_OK == server_disconnect (s)); - s = s->next; - } - - GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name, "Stopping server\n"); - /* Stop server */ - server_stop (plugin); - - GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name, "Stopping client\n"); - /* Stop client */ - client_stop (plugin); - - /* deleting up sessions */ - s = plugin->head; - while (s != NULL) - { - struct Session *t = s->next; - - GNUNET_CONTAINER_DLL_remove (plugin->head, plugin->tail, s); - - struct HTTP_Message *msg = s->msg_head; - struct HTTP_Message *tmp = NULL; - - while (msg != NULL) - { - tmp = msg->next; - - GNUNET_CONTAINER_DLL_remove (s->msg_head, s->msg_tail, msg); - if (msg->transmit_cont != NULL) - { - msg->transmit_cont (msg->transmit_cont_cls, &s->target, GNUNET_SYSERR); - } - GNUNET_free (msg); - msg = tmp; - } - - delete_session (s); - s = t; - } - - GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name, - "Plugin `%s' unloaded\n", plugin->name); - GNUNET_free_non_null (plugin->server_addr_v4); - GNUNET_free_non_null (plugin->server_addr_v6); - GNUNET_free (plugin); - GNUNET_free (api); - return NULL; -} - -/* end of plugin_transport_http.c */ |