* @author Matthias Wachs
*/
-#include "platform.h"
-#include "gnunet_common.h"
-#include "gnunet_constants.h"
-#include "gnunet_protocols.h"
-#include "gnunet_connection_lib.h"
-#include "gnunet_service_lib.h"
-#include "gnunet_statistics_service.h"
-#include "gnunet_transport_service.h"
-#include "gnunet_resolver_service.h"
-#include "gnunet_server_lib.h"
-#include "gnunet_container_lib.h"
-#include "gnunet_transport_plugin.h"
-#include "gnunet_os_lib.h"
-#include "gnunet_nat_lib.h"
-#include "microhttpd.h"
-#include <curl/curl.h>
-
-#if BUILD_HTTPS
-#define LIBGNUNET_PLUGIN_TRANSPORT_INIT libgnunet_plugin_transport_https_init
-#define LIBGNUNET_PLUGIN_TRANSPORT_DONE libgnunet_plugin_transport_https_done
-#define LIBGNUNET_PLUGIN_TRANSPORT_COMPONENT transport_https
-#define PROTOCOL_PREFIX "https"
-#else
-#define LIBGNUNET_PLUGIN_TRANSPORT_INIT libgnunet_plugin_transport_http_init
-#define LIBGNUNET_PLUGIN_TRANSPORT_DONE libgnunet_plugin_transport_http_done
-#define LIBGNUNET_PLUGIN_TRANSPORT_COMPONENT transport_http
-#define PROTOCOL_PREFIX "http"
-#endif
-
-#define DEBUG_HTTP GNUNET_NO
-#define DEBUG_CURL GNUNET_NO
-#define DEBUG_MHD GNUNET_NO
-#define DEBUG_CONNECTIONS GNUNET_NO
-#define DEBUG_SESSION_SELECTION GNUNET_NO
-#define DEBUG_SCHEDULING GNUNET_NO
-#define CURL_TCP_NODELAY GNUNET_YES
-
-#define INBOUND GNUNET_NO
-#define OUTBOUND GNUNET_YES
-
-
-
-/**
- * Text of the response sent back after the last bytes of a PUT
- * request have been received (just to formally obey the HTTP
- * protocol).
- */
-#define HTTP_PUT_RESPONSE "Thank you!"
+#include "plugin_transport_http.h"
/**
* After how long do we expire an address that we
*/
#define LEARNED_ADDRESS_EXPIRATION GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_HOURS, 6)
-/**
- * Page returned if request invalid
- */
-#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>"
-
-/**
- * Timeout for a http connect
- */
-#define HTTP_CONNECT_TIMEOUT 30
-
-/**
- * Network format for IPv4 addresses.
- */
-struct IPv4HttpAddress
-{
- /**
- * IPv4 address, in network byte order.
- */
- uint32_t ipv4_addr GNUNET_PACKED;
-
- /**
- * Port number, in network byte order.
- */
- uint16_t port GNUNET_PACKED;
-};
-
/**
* Wrapper to manage IPv4 addresses
*/
*/
struct IPv4HttpAddressWrapper *prev;
- struct IPv4HttpAddress *addr;
-};
-
-/**
- * Network format for IPv6 addresses.
- */
-struct IPv6HttpAddress
-{
- /**
- * IPv6 address.
- */
- struct in6_addr ipv6_addr GNUNET_PACKED;
-
- /**
- * Port number, in network byte order.
- */
- uint16_t port GNUNET_PACKED;
-
-};
-
-/**
- * Wrapper for IPv4 addresses.
- */
-struct IPv6HttpAddressWrapper
-{
- /**
- * Linked list next
- */
- struct IPv6HttpAddressWrapper *next;
-
- /**
- * Linked list previous
- */
- struct IPv6HttpAddressWrapper *prev;
-
- struct IPv6HttpAddress *addr;
-};
-
-/**
- * Message to send using http
- */
-struct HTTP_Message
-{
- /**
- * next pointer for double linked list
- */
- struct HTTP_Message *next;
-
- /**
- * previous pointer for double linked list
- */
- struct HTTP_Message *prev;
-
- /**
- * buffer containing data to send
- */
- char *buf;
-
- /**
- * amount of data already sent
- */
- size_t pos;
-
- /**
- * buffer length
- */
- size_t size;
-
- /**
- * Continuation function to call once the transmission buffer
- * has again space available. NULL if there is no
- * continuation to call.
- */
- GNUNET_TRANSPORT_TransmitContinuation transmit_cont;
-
- /**
- * Closure for transmit_cont.
- */
- void *transmit_cont_cls;
-};
-
-
-struct HTTP_PeerContext
-{
- /**
- * peer's identity
- */
- struct GNUNET_PeerIdentity identity;
-
- /**
- * Pointer to the global plugin struct.
- */
- struct Plugin *plugin;
-
- /**
- * Linked list of connections with this peer
- * head
- */
- struct Session *head;
-
- /**
- * Linked list of connections with this peer
- * tail
- */
- struct Session *tail;
-
- /**
- * id for next session
- */
- size_t session_id_counter;
-
- /**
- * Last session used to send data
- */
- struct Session *last_session;
-
- /**
- * The task resetting inbound quota delay
- */
- GNUNET_SCHEDULER_TaskIdentifier reset_task;
-
- /**
- * Delay from transport service inbound quota tracker when to receive data again
- */
- struct GNUNET_TIME_Relative delay;
-};
-
-
-struct Session
-{
- /**
- * API requirement.
- */
- struct SessionHeader header;
-
- /**
- * next session in linked list
- */
- struct Session *next;
-
- /**
- * previous session in linked list
- */
- struct Session *prev;
-
- /**
- * address of this session
- */
- void *addr;
-
- /**
- * address length
- */
- size_t addrlen;
-
- /**
- * target url
- */
- char *url;
-
- /**
- * Message queue for outbound messages
- * head of queue
- */
- struct HTTP_Message *pending_msgs_head;
-
- /**
- * Message queue for outbound messages
- * tail of queue
- */
- struct HTTP_Message *pending_msgs_tail;
-
- /**
- * partner peer this connection belongs to
- */
- struct HTTP_PeerContext *peercontext;
-
- /**
- * message stream tokenizer for incoming data
- */
- struct GNUNET_SERVER_MessageStreamTokenizer *msgtok;
-
- /**
- * session direction
- * outbound: OUTBOUND (GNUNET_YES)
- * inbound : INBOUND (GNUNET_NO)
- */
- unsigned int direction;
-
- /**
- * is session connected to send data?
- */
- unsigned int send_connected;
-
- /**
- * is send connection active?
- */
- unsigned int send_active;
-
- /**
- * connection disconnect forced (e.g. from transport)
- */
- unsigned int send_force_disconnect;
-
- /**
- * is session connected to receive data?
- */
- unsigned int recv_connected;
-
- /**
- * is receive connection active?
- */
- unsigned int recv_active;
-
- /**
- * connection disconnect forced (e.g. from transport)
- */
- unsigned int recv_force_disconnect;
-
-
- /**
- * id for next session
- * NOTE: 0 is not an ID, zero is not defined. A correct ID is always > 0
- */
- size_t session_id;
-
- /**
- * entity managing sending data
- * outbound session: CURL *
- * inbound session: mhd_connection *
- */
- void *send_endpoint;
-
- /**
- * entity managing recieving data
- * outbound session: CURL *
- * inbound session: mhd_connection *
- */
- void *recv_endpoint;
-
- /**
- * Current queue size
- */
- size_t queue_length_cur;
-
- /**
- * Max queue size
- */
- size_t queue_length_max;
-
+ struct sockaddr_in addr;
};
-
-/**
- * Encapsulation of all of the state of the plugin.
- */
-struct Plugin
-{
- /**
- * Our environment.
- */
- struct GNUNET_TRANSPORT_PluginEnvironment *env;
-
- /**
- * Handle for reporting statistics.
- */
- struct GNUNET_STATISTICS_Handle *stats;
-
- /**
- * Plugin Port
- */
- uint16_t port_inbound;
-
- struct GNUNET_CONTAINER_MultiHashMap *peers;
-
- /**
- * Daemon for listening for new IPv4 connections.
- */
- struct MHD_Daemon *http_server_daemon_v4;
-
- /**
- * Daemon for listening for new IPv6connections.
- */
- struct MHD_Daemon *http_server_daemon_v6;
-
- /**
- * Our primary task for http daemon handling IPv4 connections
- */
- GNUNET_SCHEDULER_TaskIdentifier http_server_task_v4;
-
- /**
- * Our primary task for http daemon handling IPv6 connections
- */
- GNUNET_SCHEDULER_TaskIdentifier http_server_task_v6;
-
- /**
- * The task sending data
- */
- GNUNET_SCHEDULER_TaskIdentifier http_curl_task;
-
- /**
- * cURL Multihandle
- */
- CURLM *multi_handle;
-
- /**
- * Our handle to the NAT module.
- */
- struct GNUNET_NAT_Handle *nat;
-
- /**
- * ipv4 DLL head
- */
- struct IPv4HttpAddressWrapper *ipv4_addr_head;
-
- /**
- * ipv4 DLL tail
- */
- struct IPv4HttpAddressWrapper *ipv4_addr_tail;
-
- /**
- * ipv6 DLL head
- */
- struct IPv6HttpAddressWrapper *ipv6_addr_head;
-
- /**
- * ipv6 DLL tail
- */
- struct IPv6HttpAddressWrapper *ipv6_addr_tail;
-
- /**
- * Our ASCII encoded, hashed peer identity
- * This string is used to distinguish between connections and is added to the urls
- */
- struct GNUNET_CRYPTO_HashAsciiEncoded my_ascii_hash_ident;
-
- /**
- * IPv4 Address the plugin binds to
- */
- struct sockaddr_in *bind4_address;
-
- /**
- * IPv6 Address the plugins binds to
- */
- struct sockaddr_in6 *bind6_address;
-
- /**
- * Hostname to bind to
- */
- char *bind_hostname;
-
- /**
- * Is IPv4 enabled?
- */
- int use_ipv6;
-
- /**
- * Is IPv6 enabled?
- */
- int use_ipv4;
-
- /**
- * use local addresses?
- */
- int use_localaddresses;
-
- /**
- * maximum number of connections
- */
- int max_connect_per_transport;
-
- /**
- * Current number of connections;
- */
- int current_connections;
-
- /**
- * Closure passed by MHD to the mhd_logger function
- */
- void *mhd_log;
-
- /* only needed for HTTPS plugin */
-#if BUILD_HTTPS
- /* The certificate MHD uses as an \0 terminated string */
- char *cert;
-
- /* The private key MHD uses as an \0 terminated string */
- char *key;
-
- /* crypto init string */
- char *crypto_init;
-#endif
-};
-
-/**
- * Context for address to string conversion.
- */
-struct PrettyPrinterContext
-{
- /**
- * Function to call with the result.
- */
- GNUNET_TRANSPORT_AddressStringCallback asc;
-
- /**
- * Clsoure for 'asc'.
- */
- void *asc_cls;
-
- /**
- * Port to add after the IP address.
- */
- uint16_t port;
-};
-
-
-/**
- * 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
- */
-static const char *
-http_plugin_address_to_string (void *cls, const void *addr, size_t addrlen);
-
-
-/**
- * Call MHD to process pending ipv4 requests and then go back
- * and schedule the next run.
- */
-static void
-http_server_daemon_v4_run (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc);
-/**
- * Call MHD to process pending ipv6 requests and then go back
- * and schedule the next run.
- */
-static void
-http_server_daemon_v6_run (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc);
-
-/**
- * Function setting up curl handle and selecting message to send
- *
- * @param plugin plugin
- * @param ps session
- * @return GNUNET_SYSERR on failure, GNUNET_NO if connecting, GNUNET_YES if ok
- */
-static int
-send_check_connections (struct Plugin *plugin, struct Session *ps);
-
-/**
- * Function setting up file descriptors and scheduling task to run
- *
- * @param plugin plugin as closure
- * @return GNUNET_SYSERR for hard failure, GNUNET_OK for ok
- */
-static int
-curl_schedule (struct Plugin *plugin);
-
-/**
- * Task scheduled to reset the inbound quota delay for a specific peer
- * @param cls plugin as closure
- * @param tc task context
- */
-static void
-reset_inbound_quota_delay (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
- struct HTTP_PeerContext *pc = cls;
-
- GNUNET_assert (cls != NULL);
- pc->reset_task = GNUNET_SCHEDULER_NO_TASK;
- if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
- return;
- pc->delay = GNUNET_TIME_relative_get_zero ();
-}
-
-
-/**
- * Creates a valid url from passed address and id
- * @param plugin plugin
- * @param addr address to create url from
- * @param addrlen address lenth
- * @param id session id
- * @return the created url
- */
-static char *
-create_url (struct Plugin *plugin, const void *addr, size_t addrlen, size_t id)
-{
- char *url = NULL;
- char *addr_str = (char *) http_plugin_address_to_string (NULL, addr, addrlen);
-
- GNUNET_assert ((addr != NULL) && (addrlen != 0));
- GNUNET_asprintf (&url, "%s://%s/%s;%u", PROTOCOL_PREFIX, addr_str,
- (char *) (&plugin->my_ascii_hash_ident), id);
- return url;
-}
-
-
-/**
- * Removes a message from the linked list of messages
- * @param ps session
- * @param msg message
- * @return GNUNET_SYSERR if msg not found, GNUNET_OK on success
- */
-static int
-remove_http_message (struct Session *ps, struct HTTP_Message *msg)
-{
- GNUNET_CONTAINER_DLL_remove (ps->pending_msgs_head, ps->pending_msgs_tail,
- msg);
- GNUNET_free (msg);
- return GNUNET_OK;
-}
-
-/**
- * Iterator to remove peer context
- * @param cls the plugin
- * @param key the peers public key hashcode
- * @param value the peer context
- * @return GNUNET_YES on success
- */
-static int
-remove_peer_context_Iterator (void *cls, const GNUNET_HashCode * key,
- void *value)
-{
- struct Plugin *plugin = cls;
- struct HTTP_PeerContext *pc = value;
- struct Session *ps = pc->head;
- struct Session *tmp = NULL;
- struct HTTP_Message *msg = NULL;
- struct HTTP_Message *msg_tmp = NULL;
-
-#if DEBUG_HTTP
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Freeing context for peer `%s'\n",
- GNUNET_i2s (&pc->identity));
-#endif
- GNUNET_assert (GNUNET_YES ==
- GNUNET_CONTAINER_multihashmap_remove (plugin->peers,
- &pc->identity.hashPubKey,
- pc));
- while (ps != NULL)
- {
- plugin->env->session_end (plugin, &pc->identity, ps);
- tmp = ps->next;
-
- GNUNET_free_non_null (ps->addr);
- GNUNET_free (ps->url);
- if (ps->msgtok != NULL)
- GNUNET_SERVER_mst_destroy (ps->msgtok);
-
- msg = ps->pending_msgs_head;
- while (msg != NULL)
- {
- msg_tmp = msg->next;
- GNUNET_free (msg);
- msg = msg_tmp;
- }
- if (ps->direction == OUTBOUND)
- {
- if (ps->send_endpoint != NULL)
- curl_easy_cleanup (ps->send_endpoint);
- if (ps->recv_endpoint != NULL)
- curl_easy_cleanup (ps->recv_endpoint);
- }
- GNUNET_free (ps);
- ps = tmp;
- }
- GNUNET_free (pc);
- GNUNET_STATISTICS_update (plugin->env->stats,
- gettext_noop ("# HTTP peers active"), -1,
- GNUNET_NO);
- return GNUNET_YES;
-}
-
-
-/**
- * Removes a session from the linked list of sessions
- * @param pc peer context
- * @param ps session
- * @param call_msg_cont GNUNET_YES to call pending message continuations, otherwise no
- * @param call_msg_cont_result result to call message continuations with
- * @return GNUNET_SYSERR if msg not found, GNUNET_OK on success
- */
-static int
-remove_session (struct HTTP_PeerContext *pc, struct Session *ps,
- int call_msg_cont, int call_msg_cont_result)
-{
- struct HTTP_Message *msg;
- struct Plugin *plugin = ps->peercontext->plugin;
-
-#if DEBUG_CONNECTIONS
- 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);
-#endif
- plugin->env->session_end (plugin, &pc->identity, ps);
- GNUNET_free_non_null (ps->addr);
- GNUNET_SERVER_mst_destroy (ps->msgtok);
- GNUNET_free (ps->url);
- if (ps->direction == INBOUND)
- {
- if (ps->recv_endpoint != NULL)
- {
- curl_easy_cleanup (ps->recv_endpoint);
- ps->recv_endpoint = NULL;
- }
- if (ps->send_endpoint != NULL)
- {
- curl_easy_cleanup (ps->send_endpoint);
- ps->send_endpoint = NULL;
- }
- }
-
- msg = ps->pending_msgs_head;
- while (msg != NULL)
- {
- if ((call_msg_cont == GNUNET_YES) && (msg->transmit_cont != NULL))
- {
- msg->transmit_cont (msg->transmit_cont_cls, &pc->identity,
- call_msg_cont_result);
- }
- GNUNET_CONTAINER_DLL_remove (ps->pending_msgs_head, ps->pending_msgs_head,
- msg);
- GNUNET_free (msg);
- msg = ps->pending_msgs_head;
- }
-
- GNUNET_CONTAINER_DLL_remove (pc->head, pc->tail, ps);
- GNUNET_free (ps);
- ps = NULL;
-
- /* no sessions left remove peer */
- if (pc->head == NULL)
- {
-#if DEBUG_HTTP
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "No sessions left for peer `%s', removing context\n",
- GNUNET_i2s (&pc->identity));
-#endif
- remove_peer_context_Iterator (plugin, &pc->identity.hashPubKey, pc);
- }
-
- return GNUNET_OK;
-}
-
-
-#if 0
-static int
-check_localaddress (const struct sockaddr *addr, socklen_t addrlen)
-{
- uint32_t res = 0;
- int local = GNUNET_NO;
- int af = addr->sa_family;
-
- switch (af)
- {
- case AF_INET:
- {
- uint32_t netmask = 0x7F000000;
- uint32_t address = ntohl (((struct sockaddr_in *) addr)->sin_addr.s_addr);
-
- res = (address >> 24) ^ (netmask >> 24);
- if (res != 0)
- local = GNUNET_NO;
- else
- local = GNUNET_YES;
-#if DEBUG_HTTP
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Checking IPv4 address `%s': %s\n",
- GNUNET_a2s (addr, addrlen),
- (local == GNUNET_YES) ? "local" : "global");
-#endif
- break;
- }
- case AF_INET6:
- {
- if (IN6_IS_ADDR_LOOPBACK (&((struct sockaddr_in6 *) addr)->sin6_addr) ||
- IN6_IS_ADDR_LINKLOCAL (&((struct sockaddr_in6 *) addr)->sin6_addr))
- local = GNUNET_YES;
- else
- local = GNUNET_NO;
-#if DEBUG_HTTP
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Checking IPv6 address `%s' : %s\n",
- GNUNET_a2s (addr, addrlen),
- (local == GNUNET_YES) ? "local" : "global");
-#endif
- break;
- }
- }
- return local;
-}
-
-
-/**
- * Add the IP of our network interface to the list of
- * our external IP addresses.
- *
- * @param cls the 'struct Plugin*'
- * @param name name of the interface
- * @param isDefault do we think this may be our default interface
- * @param addr address of the interface
- * @param addrlen number of bytes in addr
- * @return GNUNET_OK to continue iterating
- */
-static int
-process_interfaces (void *cls, const char *name, int isDefault,
- const struct sockaddr *addr, socklen_t addrlen)
-{
- struct Plugin *plugin = cls;
- struct IPv4HttpAddress *t4;
- struct IPv6HttpAddress *t6;
- int af;
-
- if (plugin->use_localaddresses == GNUNET_NO)
- {
- if (GNUNET_YES == check_localaddress (addr, addrlen))
- {
-#if DEBUG_HTTP
- GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, PROTOCOL_PREFIX,
- "Not notifying transport of address `%s' (local address)\n",
- GNUNET_a2s (addr, addrlen));
-#endif
- return GNUNET_OK;
- }
- }
-
-
- GNUNET_assert (cls != NULL);
- af = addr->sa_family;
- if ((af == AF_INET) && (plugin->use_ipv4 == GNUNET_YES) &&
- (plugin->bind6_address == NULL))
- {
-
- struct in_addr bnd_cmp = ((struct sockaddr_in *) addr)->sin_addr;
-
- t4 = GNUNET_malloc (sizeof (struct IPv4HttpAddress));
- // Not skipping loopback addresses
-
-
- t4->ipv4_addr = ((struct sockaddr_in *) addr)->sin_addr.s_addr;
- t4->port = htons (plugin->port_inbound);
- if (plugin->bind4_address != NULL)
- {
- if (0 ==
- memcmp (&plugin->bind4_address->sin_addr, &bnd_cmp,
- sizeof (struct in_addr)))
- {
- GNUNET_CONTAINER_DLL_insert (plugin->ipv4_addr_head,
- plugin->ipv4_addr_tail, t4);
- plugin->env->notify_address (plugin->env->cls, GNUNET_YES, t4,
- sizeof (struct IPv4HttpAddress));
- return GNUNET_OK;
- }
- GNUNET_free (t4);
- return GNUNET_OK;
- }
- else
- {
- GNUNET_CONTAINER_DLL_insert (plugin->ipv4_addr_head,
- plugin->ipv4_addr_tail, t4);
- plugin->env->notify_address (plugin->env->cls, GNUNET_YES, t4,
- sizeof (struct IPv4HttpAddress));
- return GNUNET_OK;
- }
- }
- if ((af == AF_INET6) && (plugin->use_ipv6 == GNUNET_YES) &&
- (plugin->bind4_address == NULL))
- {
-
- struct in6_addr bnd_cmp6 = ((struct sockaddr_in6 *) addr)->sin6_addr;
-
- t6 = GNUNET_malloc (sizeof (struct IPv6HttpAddress));
- GNUNET_assert (t6 != NULL);
-
- if (plugin->bind6_address != NULL)
- {
- if (0 ==
- memcmp (&plugin->bind6_address->sin6_addr, &bnd_cmp6,
- sizeof (struct in6_addr)))
- {
- memcpy (&t6->ipv6_addr, &((struct sockaddr_in6 *) addr)->sin6_addr,
- sizeof (struct in6_addr));
- t6->port = htons (plugin->port_inbound);
- plugin->env->notify_address (plugin->env->cls, GNUNET_YES, t6,
- sizeof (struct IPv6HttpAddress));
- GNUNET_CONTAINER_DLL_insert (plugin->ipv6_addr_head,
- plugin->ipv6_addr_tail, t6);
- return GNUNET_OK;
- }
- GNUNET_free (t6);
- return GNUNET_OK;
- }
- memcpy (&t6->ipv6_addr, &((struct sockaddr_in6 *) addr)->sin6_addr,
- sizeof (struct in6_addr));
- t6->port = htons (plugin->port_inbound);
- GNUNET_CONTAINER_DLL_insert (plugin->ipv6_addr_head, plugin->ipv6_addr_tail,
- t6);
-
- plugin->env->notify_address (plugin->env->cls, GNUNET_YES, t6,
- sizeof (struct IPv6HttpAddress));
- }
- return GNUNET_OK;
-}
-#endif
-
-/**
- * External logging function for MHD
- * @param arg arguments
- * @param fmt format string
- * @param ap list of arguments
- */
-static void
-mhd_logger (void *arg, const char *fmt, va_list ap)
-{
- char text[1024];
-
- vsnprintf (text, sizeof (text), fmt, ap);
- va_end (ap);
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "MHD: %s\n", text);
-}
-
-
-static void
-mhd_termination_cb (void *cls, struct MHD_Connection *connection,
- void **httpSessionCache)
-{
- struct Session *ps = *httpSessionCache;
-
- if (ps == NULL)
- return;
- struct HTTP_PeerContext *pc = ps->peercontext;
- struct Plugin *plugin = cls;
-
- GNUNET_assert (cls != NULL);
- plugin->current_connections--;
-
- if (connection == ps->recv_endpoint)
- {
-#if DEBUG_CONNECTIONS
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Connection %X: inbound connection from peer `%s' was terminated\n",
- ps, GNUNET_i2s (&pc->identity));
-#endif
- ps->recv_active = GNUNET_NO;
- ps->recv_connected = GNUNET_NO;
- ps->recv_endpoint = NULL;
- }
- if (connection == ps->send_endpoint)
- {
- ps->send_active = GNUNET_NO;
- ps->send_connected = GNUNET_NO;
- ps->send_endpoint = NULL;
-#if DEBUG_CONNECTIONS
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Connection %X: outbound connection from peer `%s' was terminated\n",
- ps, GNUNET_i2s (&pc->identity));
-#endif
- }
-
- /* if both connections disconnected, remove session */
- if ((ps->send_connected == GNUNET_NO) && (ps->recv_connected == GNUNET_NO))
- {
- GNUNET_STATISTICS_update (pc->plugin->env->stats,
- gettext_noop
- ("# HTTP inbound sessions for peers active"), -1,
- GNUNET_NO);
- remove_session (pc, ps, GNUNET_YES, GNUNET_SYSERR);
- }
-}
-
-
-/**
- * Callback called by MessageStreamTokenizer when a message has arrived
- * @param cls current session as closure
- * @param client clien
- * @param message the message to be forwarded to transport service
- */
-static void
-mhd_write_mst_cb (void *cls, void *client,
- const struct GNUNET_MessageHeader *message)
-{
- struct Session *ps = cls;
- struct HTTP_PeerContext *pc;
- struct GNUNET_TIME_Relative delay;
-
- GNUNET_assert (ps != NULL);
- pc = ps->peercontext;
- GNUNET_assert (pc != NULL);
-#if DEBUG_HTTP
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Connection %X: Forwarding message to transport service, type %u and size %u from `%s' (`%s')\n",
- ps, ntohs (message->type), ntohs (message->size),
- GNUNET_i2s (&(ps->peercontext)->identity),
- http_plugin_address_to_string (NULL, ps->addr, ps->addrlen));
-#endif
- struct GNUNET_TRANSPORT_ATS_Information distance[2];
-
- distance[0].type = htonl (GNUNET_TRANSPORT_ATS_QUALITY_NET_DISTANCE);
- distance[0].value = htonl (1);
- distance[1].type = htonl (GNUNET_TRANSPORT_ATS_ARRAY_TERMINATOR);
- distance[1].value = htonl (0);
- delay =
- pc->plugin->env->receive (ps->peercontext->plugin->env->cls,
- &pc->identity, message,
- (const struct GNUNET_TRANSPORT_ATS_Information
- *) &distance, 2, ps, NULL, 0);
- pc->delay = delay;
- if (pc->reset_task != GNUNET_SCHEDULER_NO_TASK)
- GNUNET_SCHEDULER_cancel (pc->reset_task);
-
- if (delay.rel_value > 0)
- {
-#if DEBUG_HTTP
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Connection %X: Inbound quota management: delay next read for %llu ms \n",
- ps, delay.rel_value);
-#endif
- pc->reset_task =
- GNUNET_SCHEDULER_add_delayed (delay, &reset_inbound_quota_delay, pc);
- }
-}
-
-
-/**
- * Check if incoming connection is accepted.
- * NOTE: Here every connection is accepted
- * @param cls plugin as closure
- * @param addr address of incoming connection
- * @param addr_len address length of incoming connection
- * @return MHD_YES if connection is accepted, MHD_NO if connection is rejected
- *
- */
-static int
-mhd_accept_cb (void *cls, const struct sockaddr *addr, socklen_t addr_len)
-{
- struct Plugin *plugin = cls;
-
- GNUNET_assert (cls != NULL);
-
- if (plugin->max_connect_per_transport > plugin->current_connections)
- {
- plugin->current_connections++;
- return MHD_YES;
- }
- else
- return MHD_NO;
-}
-
-
-/**
- * Callback called by MHD when it needs data to send
- * @param cls current session
- * @param pos position in buffer
- * @param buf the buffer to write data to
- * @param max max number of bytes available in buffer
- * @return bytes written to buffer
- */
-static ssize_t
-mhd_send_callback (void *cls, uint64_t pos, char *buf, size_t max)
-{
- struct Session *ps = cls;
- struct HTTP_PeerContext *pc;
- struct HTTP_Message *msg;
- int bytes_read = 0;
-
- GNUNET_assert (ps != NULL);
-
- pc = ps->peercontext;
- msg = ps->pending_msgs_tail;
- if (ps->send_force_disconnect == GNUNET_YES)
- {
-#if DEBUG_CONNECTIONS
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Connection %X: outbound forced to disconnect\n", ps);
-#endif
- return -1;
- }
-
- if (msg != NULL)
- {
- /* sending */
- if ((msg->size - msg->pos) <= max)
- {
- memcpy (buf, &msg->buf[msg->pos], (msg->size - msg->pos));
- bytes_read = msg->size - msg->pos;
- msg->pos += (msg->size - msg->pos);
- }
- else
- {
- memcpy (buf, &msg->buf[msg->pos], max);
- msg->pos += max;
- bytes_read = max;
- }
-
- /* removing message */
- if (msg->pos == msg->size)
- {
- if (NULL != msg->transmit_cont)
- msg->transmit_cont (msg->transmit_cont_cls, &pc->identity, GNUNET_OK);
- ps->queue_length_cur -= msg->size;
- remove_http_message (ps, msg);
- }
- }
-#if DEBUG_CONNECTIONS
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Connection %X: MHD has sent %u bytes\n",
- ps, bytes_read);
-#endif
- return bytes_read;
-}
-
-
-/**
- * Process GET or PUT request received via MHD. For
- * GET, queue response that will send back our pending
- * messages. For PUT, process incoming data and send
- * to GNUnet core. In either case, check if a session
- * already exists and create a new one if not.
- */
-static int
-mhd_access_cb (void *cls, struct MHD_Connection *mhd_connection,
- const char *url, const char *method, const char *version,
- const char *upload_data, size_t * upload_data_size,
- void **httpSessionCache)
-{
- struct Plugin *plugin = cls;
- struct MHD_Response *response;
- const union MHD_ConnectionInfo *conn_info;
- const struct sockaddr *client_addr;
- const struct sockaddr_in *addrin;
- const struct sockaddr_in6 *addrin6;
- char address[INET6_ADDRSTRLEN + 14];
- struct GNUNET_PeerIdentity pi_in;
- size_t id_num = 0;
- struct IPv4HttpAddress ipv4addr;
- struct IPv6HttpAddress ipv6addr;
- struct HTTP_PeerContext *pc = NULL;
- struct Session *ps = NULL;
- struct Session *ps_tmp = NULL;
- int res = GNUNET_NO;
- void *addr = NULL;
- size_t addr_len = 0;
-
- GNUNET_assert (cls != NULL);
-
- if (NULL == *httpSessionCache)
- {
- /* check url for peer identity , if invalid send HTTP 404 */
- size_t len = strlen (&url[1]);
- char *peer = GNUNET_malloc (104 + 1);
-
- if ((len > 104) && (url[104] == ';'))
- {
- char *id = GNUNET_malloc ((len - 104) + 1);
-
- strcpy (id, &url[105]);
- memcpy (peer, &url[1], 103);
- peer[103] = '\0';
- id_num = strtoul (id, NULL, 10);
- GNUNET_free (id);
- }
- res = GNUNET_CRYPTO_hash_from_string (peer, &(pi_in.hashPubKey));
- GNUNET_free (peer);
- if (GNUNET_SYSERR == res)
- {
- response =
- MHD_create_response_from_data (strlen (HTTP_ERROR_RESPONSE),
- HTTP_ERROR_RESPONSE, MHD_NO, MHD_NO);
- res = MHD_queue_response (mhd_connection, MHD_HTTP_NOT_FOUND, response);
- MHD_destroy_response (response);
-#if DEBUG_CONNECTIONS
- if (res == MHD_YES)
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Peer has no valid ident, sent HTTP 1.1/404\n");
- else
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Peer has no valid ident, could not send error\n");
-#endif
- return res;
- }
- }
- else
- {
- ps = *httpSessionCache;
- pc = ps->peercontext;
- }
-
- if (NULL == *httpSessionCache)
- {
- /* get peer context */
- pc = GNUNET_CONTAINER_multihashmap_get (plugin->peers, &pi_in.hashPubKey);
- /* Peer unknown */
- if (pc == NULL)
- {
- pc = GNUNET_malloc (sizeof (struct HTTP_PeerContext));
- pc->plugin = plugin;
- pc->session_id_counter = 1;
- pc->last_session = NULL;
- memcpy (&pc->identity, &pi_in, sizeof (struct GNUNET_PeerIdentity));
- GNUNET_CONTAINER_multihashmap_put (plugin->peers,
- &pc->identity.hashPubKey, pc,
- GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
- GNUNET_STATISTICS_update (plugin->env->stats,
- gettext_noop ("# HTTP peers active"), 1,
- GNUNET_NO);
- }
-
- conn_info =
- MHD_get_connection_info (mhd_connection,
- MHD_CONNECTION_INFO_CLIENT_ADDRESS);
- /* Incoming IPv4 connection */
- /* cast required for legacy MHD API < 0.9.6 */
- client_addr = (const struct sockaddr *) conn_info->client_addr;
- if (AF_INET == client_addr->sa_family)
- {
- addrin = (const struct sockaddr_in *) client_addr;
- inet_ntop (addrin->sin_family, &(addrin->sin_addr), address,
- INET_ADDRSTRLEN);
- memcpy (&ipv4addr.ipv4_addr, &(addrin->sin_addr),
- sizeof (struct in_addr));
- ipv4addr.port = addrin->sin_port;
- addr = &ipv4addr;
- addr_len = sizeof (struct IPv4HttpAddress);
- }
- /* Incoming IPv6 connection */
- if (AF_INET6 == client_addr->sa_family)
- {
- addrin6 = (const struct sockaddr_in6 *) client_addr;
- inet_ntop (addrin6->sin6_family, &(addrin6->sin6_addr), address,
- INET6_ADDRSTRLEN);
- memcpy (&ipv6addr.ipv6_addr, &(addrin6->sin6_addr),
- sizeof (struct in6_addr));
- ipv6addr.port = addrin6->sin6_port;
- addr = &ipv6addr;
- addr_len = sizeof (struct IPv6HttpAddress);
- }
-
- GNUNET_assert (addr != NULL);
- GNUNET_assert (addr_len != 0);
-
- ps = NULL;
- /* only inbound sessions here */
-
- ps_tmp = pc->head;
- while (ps_tmp != NULL)
- {
- if ((ps_tmp->direction == INBOUND) && (ps_tmp->session_id == id_num) &&
- (id_num != 0))
- {
- if ((ps_tmp->recv_force_disconnect != GNUNET_YES) &&
- (ps_tmp->send_force_disconnect != GNUNET_YES))
- ps = ps_tmp;
- break;
- }
- ps_tmp = ps_tmp->next;
- }
-
- if (ps == NULL)
- {
- ps = GNUNET_malloc (sizeof (struct Session));
- ps->addr = GNUNET_malloc (addr_len);
- memcpy (ps->addr, addr, addr_len);
- ps->addrlen = addr_len;
- ps->direction = INBOUND;
- ps->pending_msgs_head = NULL;
- ps->pending_msgs_tail = NULL;
- ps->send_connected = GNUNET_NO;
- ps->send_active = GNUNET_NO;
- ps->recv_connected = GNUNET_NO;
- ps->recv_active = GNUNET_NO;
- ps->peercontext = pc;
- ps->session_id = id_num;
- ps->queue_length_cur = 0;
- ps->queue_length_max = GNUNET_SERVER_MAX_MESSAGE_SIZE;
- ps->url = create_url (plugin, ps->addr, ps->addrlen, ps->session_id);
- GNUNET_CONTAINER_DLL_insert (pc->head, pc->tail, ps);
- GNUNET_STATISTICS_update (plugin->env->stats,
- gettext_noop
- ("# HTTP inbound sessions for peers active"), 1,
- GNUNET_NO);
- }
-
- *httpSessionCache = ps;
- if (ps->msgtok == NULL)
- ps->msgtok = GNUNET_SERVER_mst_create (&mhd_write_mst_cb, ps);
-#if DEBUG_HTTP
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Connection %X: HTTP Daemon has new an incoming `%s' request from peer `%s' (`%s')\n",
- ps, method, GNUNET_i2s (&pc->identity),
- http_plugin_address_to_string (NULL, ps->addr, ps->addrlen));
-#endif
- }
-
- /* Is it a PUT or a GET request */
- if (0 == strcmp (MHD_HTTP_METHOD_PUT, method))
- {
- if (ps->recv_force_disconnect == GNUNET_YES)
- {
-#if DEBUG_CONNECTIONS
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Connection %X: inbound connection was forced to disconnect\n",
- ps);
-#endif
- ps->recv_active = GNUNET_NO;
- return MHD_NO;
- }
- if ((*upload_data_size == 0) && (ps->recv_active == GNUNET_NO))
- {
- ps->recv_endpoint = mhd_connection;
- ps->recv_connected = GNUNET_YES;
- ps->recv_active = GNUNET_YES;
- ps->recv_force_disconnect = GNUNET_NO;
-#if DEBUG_CONNECTIONS
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Connection %X: inbound PUT connection connected\n", ps);
-#endif
- return MHD_YES;
- }
-
- /* Transmission of all data complete */
- if ((*upload_data_size == 0) && (ps->recv_active == GNUNET_YES))
- {
- response =
- MHD_create_response_from_data (strlen (HTTP_PUT_RESPONSE),
- HTTP_PUT_RESPONSE, MHD_NO, MHD_NO);
- res = MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
-#if DEBUG_CONNECTIONS
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Connection %X: Sent HTTP/1.1: 200 OK as PUT Response\n", ps);
-#endif
- MHD_destroy_response (response);
- ps->recv_active = GNUNET_NO;
- return MHD_YES;
- }
-
- /* Recieving data */
- if ((*upload_data_size > 0) && (ps->recv_active == GNUNET_YES))
- {
- if (pc->delay.rel_value == 0)
- {
-#if DEBUG_HTTP
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Connection %X: PUT with %u bytes forwarded to MST\n", ps,
- *upload_data_size);
-#endif
- res =
- GNUNET_SERVER_mst_receive (ps->msgtok, ps, upload_data,
- *upload_data_size, GNUNET_NO, GNUNET_NO);
- (*upload_data_size) = 0;
- }
- else
- {
-#if DEBUG_HTTP
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Connection %X: no inbound bandwidth available! Next read was delayed for %llu ms\n",
- ps, ps->peercontext->delay.rel_value);
-#endif
- }
- return MHD_YES;
- }
- else
- return MHD_NO;
- }
- if (0 == strcmp (MHD_HTTP_METHOD_GET, method))
- {
- if (ps->send_force_disconnect == GNUNET_YES)
- {
-#if DEBUG_CONNECTIONS
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Connection %X: outbound connection was forced to disconnect\n",
- ps);
-#endif
- ps->send_active = GNUNET_NO;
- return MHD_NO;
- }
- ps->send_connected = GNUNET_YES;
- ps->send_active = GNUNET_YES;
- ps->send_endpoint = mhd_connection;
- ps->send_force_disconnect = GNUNET_NO;
-#if DEBUG_CONNECTIONS
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Connection %X: inbound GET connection connected\n", ps);
-#endif
- response =
- MHD_create_response_from_callback (-1, 32 * 1024, &mhd_send_callback,
- ps, NULL);
- res = MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
- MHD_destroy_response (response);
- return MHD_YES;
- }
- return MHD_NO;
-}
-
-
-/**
- * Function that queries MHD's select sets and
- * starts the task waiting for them.
- * @param plugin plugin
- * @param daemon_handle the MHD daemon handle
- * @return gnunet task identifier
- */
-static GNUNET_SCHEDULER_TaskIdentifier
-http_server_daemon_prepare (struct Plugin *plugin,
- struct MHD_Daemon *daemon_handle)
-{
- GNUNET_SCHEDULER_TaskIdentifier ret;
- fd_set rs;
- fd_set ws;
- fd_set es;
- struct GNUNET_NETWORK_FDSet *wrs;
- struct GNUNET_NETWORK_FDSet *wws;
- struct GNUNET_NETWORK_FDSet *wes;
- int max;
- unsigned long long timeout;
- int haveto;
- struct GNUNET_TIME_Relative tv;
-
- ret = GNUNET_SCHEDULER_NO_TASK;
- FD_ZERO (&rs);
- FD_ZERO (&ws);
- FD_ZERO (&es);
- wrs = GNUNET_NETWORK_fdset_create ();
- wes = GNUNET_NETWORK_fdset_create ();
- wws = GNUNET_NETWORK_fdset_create ();
- max = -1;
- GNUNET_assert (MHD_YES == MHD_get_fdset (daemon_handle, &rs, &ws, &es, &max));
- haveto = MHD_get_timeout (daemon_handle, &timeout);
- if (haveto == MHD_YES)
- tv.rel_value = (uint64_t) timeout;
- else
- tv = GNUNET_TIME_UNIT_SECONDS;
- GNUNET_NETWORK_fdset_copy_native (wrs, &rs, max + 1);
- GNUNET_NETWORK_fdset_copy_native (wws, &ws, max + 1);
- GNUNET_NETWORK_fdset_copy_native (wes, &es, max + 1);
- if (daemon_handle == plugin->http_server_daemon_v4)
- {
- if (plugin->http_server_task_v4 != GNUNET_SCHEDULER_NO_TASK)
- {
- GNUNET_SCHEDULER_cancel (plugin->http_server_task_v4);
- plugin->http_server_daemon_v4 = GNUNET_SCHEDULER_NO_TASK;
- }
-
- ret =
- GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
- GNUNET_SCHEDULER_NO_TASK, tv, wrs, wws,
- &http_server_daemon_v4_run, plugin);
- }
- if (daemon_handle == plugin->http_server_daemon_v6)
- {
- if (plugin->http_server_task_v6 != GNUNET_SCHEDULER_NO_TASK)
- {
- GNUNET_SCHEDULER_cancel (plugin->http_server_task_v6);
- plugin->http_server_task_v6 = GNUNET_SCHEDULER_NO_TASK;
- }
-
- ret =
- GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
- GNUNET_SCHEDULER_NO_TASK, tv, wrs, wws,
- &http_server_daemon_v6_run, plugin);
- }
- GNUNET_NETWORK_fdset_destroy (wrs);
- GNUNET_NETWORK_fdset_destroy (wws);
- GNUNET_NETWORK_fdset_destroy (wes);
- return ret;
-}
-
-
-/**
- * Call MHD IPv4 to process pending requests and then go back
- * and schedule the next run.
- * @param cls plugin as closure
- * @param tc task context
- */
-static void
-http_server_daemon_v4_run (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
- struct Plugin *plugin = cls;
-
-#if DEBUG_SCHEDULING
- if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_READ_READY))
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "http_server_daemon_v4_run: GNUNET_SCHEDULER_REASON_READ_READY\n");
- if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_WRITE_READY))
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "http_server_daemon_v4_run: GNUNET_SCHEDULER_REASON_WRITE_READY\n");
- if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_TIMEOUT))
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "http_server_daemon_v4_run: GNUNET_SCHEDULER_REASON_TIMEOUT\n");
- if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_STARTUP))
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "http_server_daemon_v4_run: GGNUNET_SCHEDULER_REASON_STARTUP\n");
- if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "http_server_daemon_v4_run: GGNUNET_SCHEDULER_REASON_SHUTDOWN\n");
-#endif
-
- GNUNET_assert (cls != NULL);
- plugin->http_server_task_v4 = GNUNET_SCHEDULER_NO_TASK;
-
- if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
- return;
-
- GNUNET_assert (MHD_YES == MHD_run (plugin->http_server_daemon_v4));
- plugin->http_server_task_v4 =
- http_server_daemon_prepare (plugin, plugin->http_server_daemon_v4);
-}
-
-
-/**
- * Call MHD IPv6 to process pending requests and then go back
- * and schedule the next run.
- * @param cls plugin as closure
- * @param tc task context
- */
-static void
-http_server_daemon_v6_run (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
- struct Plugin *plugin = cls;
-
-#if DEBUG_SCHEDULING
- if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_READ_READY))
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "http_server_daemon_v6_run: GNUNET_SCHEDULER_REASON_READ_READY\n");
- if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_WRITE_READY))
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "http_server_daemon_v6_run: GNUNET_SCHEDULER_REASON_WRITE_READY\n");
- if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_TIMEOUT))
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "http_server_daemon_v6_run: GNUNET_SCHEDULER_REASON_TIMEOUT\n");
- if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_STARTUP))
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "http_server_daemon_v6_run: GGNUNET_SCHEDULER_REASON_STARTUP\n");
- if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "http_server_daemon_v6_run: GGNUNET_SCHEDULER_REASON_SHUTDOWN\n");
-#endif
-
- GNUNET_assert (cls != NULL);
- plugin->http_server_task_v6 = GNUNET_SCHEDULER_NO_TASK;
-
- if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
- return;
-
- GNUNET_assert (MHD_YES == MHD_run (plugin->http_server_daemon_v6));
- plugin->http_server_task_v6 =
- http_server_daemon_prepare (plugin, plugin->http_server_daemon_v6);
-}
-
-
-static size_t
-curl_get_header_cb (void *ptr, size_t size, size_t nmemb, void *stream)
-{
- struct Session *ps = stream;
-
- long http_result = 0;
- int res;
-
- /* Getting last http result code */
- GNUNET_assert (NULL != ps);
- if (ps->recv_connected == GNUNET_NO)
- {
- res =
- curl_easy_getinfo (ps->recv_endpoint, CURLINFO_RESPONSE_CODE,
- &http_result);
- if (CURLE_OK == res)
- {
- if (http_result == 200)
- {
- ps->recv_connected = GNUNET_YES;
- ps->recv_active = GNUNET_YES;
-#if DEBUG_CONNECTIONS
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Connection %X: connected to recieve data\n", ps);
-#endif
- // Calling send_check_connections again since receive is established
- send_check_connections (ps->peercontext->plugin, ps);
- }
- }
- }
-
-#if DEBUG_CURL
- char *tmp;
- size_t len = size * nmemb;
-
- tmp = NULL;
- if ((size * nmemb) < SIZE_MAX)
- tmp = GNUNET_malloc (len + 1);
-
- if ((tmp != NULL) && (len > 0))
- {
- memcpy (tmp, ptr, len);
- if (len >= 2)
- {
- if (tmp[len - 2] == 13)
- tmp[len - 2] = '\0';
- }
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Connection %X: Header: %s\n", ps,
- tmp);
- }
- GNUNET_free_non_null (tmp);
-#endif
-
- return size * nmemb;
-}
-
-
-/**
- * Callback called by libcurl when new headers arrive
- * Used to get HTTP result for curl operations
- * @param ptr stream to read from
- * @param size size of one char element
- * @param nmemb number of char elements
- * @param stream closure set by user
- * @return bytes read by function
- */
-static size_t
-curl_put_header_cb (void *ptr, size_t size, size_t nmemb, void *stream)
-{
- struct Session *ps = stream;
-
- char *tmp;
- size_t len = size * nmemb;
- long http_result = 0;
- int res;
-
- /* Getting last http result code */
- GNUNET_assert (NULL != ps);
- res =
- curl_easy_getinfo (ps->send_endpoint, CURLINFO_RESPONSE_CODE,
- &http_result);
- if (CURLE_OK == res)
- {
- if ((http_result == 100) && (ps->send_connected == GNUNET_NO))
- {
- ps->send_connected = GNUNET_YES;
- ps->send_active = GNUNET_YES;
-#if DEBUG_CONNECTIONS
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Connection %X: connected to send data\n", ps);
-#endif
- }
- if ((http_result == 200) && (ps->send_connected == GNUNET_YES))
- {
- ps->send_connected = GNUNET_NO;
- ps->send_active = GNUNET_NO;
-#if DEBUG_CONNECTIONS
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Connection %X: sending disconnected\n", ps);
-#endif
- }
- }
-
- tmp = NULL;
- if ((size * nmemb) < SIZE_MAX)
- tmp = GNUNET_malloc (len + 1);
-
- if ((tmp != NULL) && (len > 0))
- {
- memcpy (tmp, ptr, len);
- if (len >= 2)
- {
- if (tmp[len - 2] == 13)
- tmp[len - 2] = '\0';
- }
- }
- GNUNET_free_non_null (tmp);
- return size * nmemb;
-}
-
-/**
- * Callback method used with libcurl
- * Method is called when libcurl needs to read data during sending
- * @param stream pointer where to write data
- * @param size size of an individual element
- * @param nmemb count of elements that can be written to the buffer
- * @param ptr source pointer, passed to the libcurl handle
- * @return bytes written to stream
- */
-static size_t
-curl_send_cb (void *stream, size_t size, size_t nmemb, void *ptr)
-{
- struct Session *ps = ptr;
- struct HTTP_Message *msg = ps->pending_msgs_tail;
- size_t bytes_sent;
- size_t len;
-
- if (ps->send_active == GNUNET_NO)
- return CURL_READFUNC_PAUSE;
- if ((ps->pending_msgs_tail == NULL) && (ps->send_active == GNUNET_YES))
- {
-#if DEBUG_CONNECTIONS
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Connection %X: No Message to send, pausing connection\n", ps);
-#endif
- ps->send_active = GNUNET_NO;
- return CURL_READFUNC_PAUSE;
- }
-
- GNUNET_assert (msg != NULL);
-
- /* data to send */
- if (msg->pos < msg->size)
- {
- /* data fit in buffer */
- if ((msg->size - msg->pos) <= (size * nmemb))
- {
- len = (msg->size - msg->pos);
- memcpy (stream, &msg->buf[msg->pos], len);
- msg->pos += len;
- bytes_sent = len;
- }
- else
- {
- len = size * nmemb;
- memcpy (stream, &msg->buf[msg->pos], len);
- msg->pos += len;
- bytes_sent = len;
- }
- }
- /* no data to send */
- else
- {
- bytes_sent = 0;
- }
-
- if (msg->pos == msg->size)
- {
-#if DEBUG_CONNECTIONS
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Connection %X: Message with %u bytes sent, removing message from queue\n",
- ps, msg->pos);
-#endif
- /* Calling transmit continuation */
- if (NULL != ps->pending_msgs_tail->transmit_cont)
- msg->transmit_cont (ps->pending_msgs_tail->transmit_cont_cls,
- &(ps->peercontext)->identity, GNUNET_OK);
- ps->queue_length_cur -= msg->size;
- remove_http_message (ps, msg);
- }
- return bytes_sent;
-}
-
-
-static void
-curl_receive_mst_cb (void *cls, void *client,
- const struct GNUNET_MessageHeader *message)
-{
- struct Session *ps = cls;
- struct GNUNET_TIME_Relative delay;
-
- GNUNET_assert (ps != NULL);
-
- struct HTTP_PeerContext *pc = ps->peercontext;
-
- GNUNET_assert (pc != NULL);
-#if DEBUG_HTTP
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Connection %X: Forwarding message to transport service, type %u and size %u from `%s' (`%s')\n",
- ps, ntohs (message->type), ntohs (message->size),
- GNUNET_i2s (&(pc->identity)), http_plugin_address_to_string (NULL,
- ps->addr,
- ps->addrlen));
-#endif
- struct GNUNET_TRANSPORT_ATS_Information distance[2];
-
- distance[0].type = htonl (GNUNET_TRANSPORT_ATS_QUALITY_NET_DISTANCE);
- distance[0].value = htonl (1);
- distance[1].type = htonl (GNUNET_TRANSPORT_ATS_ARRAY_TERMINATOR);
- distance[1].value = htonl (0);
-
- delay =
- pc->plugin->env->receive (pc->plugin->env->cls, &pc->identity, message,
- (const struct GNUNET_TRANSPORT_ATS_Information
- *) &distance, 2, ps, ps->addr, ps->addrlen);
- pc->delay = delay;
- if (pc->reset_task != GNUNET_SCHEDULER_NO_TASK)
- GNUNET_SCHEDULER_cancel (pc->reset_task);
-
- if (delay.rel_value > 0)
- {
-#if DEBUG_HTTP
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Connection %X: Inbound quota management: delay next read for %llu ms\n",
- ps, delay.rel_value);
-#endif
- pc->reset_task =
- GNUNET_SCHEDULER_add_delayed (delay, &reset_inbound_quota_delay, pc);
- }
-}
-
-
-/**
-* Callback method used with libcurl
-* Method is called when libcurl needs to write data during sending
-* @param stream pointer where to write data
-* @param size size of an individual element
-* @param nmemb count of elements that can be written to the buffer
-* @param ptr destination pointer, passed to the libcurl handle
-* @return bytes read from stream
-*/
-static size_t
-curl_receive_cb (void *stream, size_t size, size_t nmemb, void *ptr)
-{
- struct Session *ps = ptr;
-
- if (ps->peercontext->delay.rel_value > 0)
- {
-#if DEBUG_HTTP
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Connection %X: no inbound bandwidth available! Next read was delayed for %llu ms\n",
- ps, ps->peercontext->delay.rel_value);
-#endif
- return 0;
- }
-#if DEBUG_CONNECTIONS
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Connection %X: %u bytes received\n", ps,
- size * nmemb);
-#endif
- GNUNET_SERVER_mst_receive (ps->msgtok, ps, stream, size * nmemb, GNUNET_NO,
- GNUNET_NO);
- return (size * nmemb);
-}
-
-
-static void
-curl_handle_finished (struct Plugin *plugin)
-{
- struct Session *ps = NULL;
- struct HTTP_PeerContext *pc = NULL;
- struct CURLMsg *msg;
- struct HTTP_Message *cur_msg = NULL;
- int msgs_in_queue;
- char *tmp;
- long http_result;
-
- do
- {
- msg = curl_multi_info_read (plugin->multi_handle, &msgs_in_queue);
- if ((msgs_in_queue == 0) || (msg == NULL))
- break;
- /* get session for affected curl handle */
- GNUNET_assert (msg->easy_handle != NULL);
- curl_easy_getinfo (msg->easy_handle, CURLINFO_PRIVATE, &tmp);
- ps = (struct Session *) tmp;
- GNUNET_assert (ps != NULL);
- pc = ps->peercontext;
- GNUNET_assert (pc != NULL);
- switch (msg->msg)
- {
- case CURLMSG_DONE:
- if ((msg->data.result != CURLE_OK) &&
- (msg->data.result != CURLE_GOT_NOTHING))
- {
- /* sending msg failed */
- if (msg->easy_handle == ps->send_endpoint)
- {
-#if DEBUG_CONNECTIONS
- GNUNET_log (GNUNET_ERROR_TYPE_INFO,
- _
- ("Connection %X: HTTP PUT to peer `%s' (`%s') failed: `%s' `%s'\n"),
- ps, GNUNET_i2s (&pc->identity),
- http_plugin_address_to_string (NULL, ps->addr,
- ps->addrlen),
- "curl_multi_perform",
- curl_easy_strerror (msg->data.result));
-#endif
- ps->send_connected = GNUNET_NO;
- ps->send_active = GNUNET_NO;
- curl_multi_remove_handle (plugin->multi_handle, ps->send_endpoint);
- while (ps->pending_msgs_tail != NULL)
- {
- cur_msg = ps->pending_msgs_tail;
- if (NULL != cur_msg->transmit_cont)
- cur_msg->transmit_cont (cur_msg->transmit_cont_cls, &pc->identity,
- GNUNET_SYSERR);
- ps->queue_length_cur -= cur_msg->size;
- remove_http_message (ps, cur_msg);
- }
- }
- /* GET connection failed */
- if (msg->easy_handle == ps->recv_endpoint)
- {
-#if DEBUG_CONNECTIONS
- GNUNET_log (GNUNET_ERROR_TYPE_INFO,
- _
- ("Connection %X: HTTP GET to peer `%s' (`%s') failed: `%s' `%s'\n"),
- ps, GNUNET_i2s (&pc->identity),
- http_plugin_address_to_string (NULL, ps->addr,
- ps->addrlen),
- "curl_multi_perform",
- curl_easy_strerror (msg->data.result));
-#endif
- ps->recv_connected = GNUNET_NO;
- ps->recv_active = GNUNET_NO;
- curl_multi_remove_handle (plugin->multi_handle, ps->recv_endpoint);
- }
- }
- else
- {
- if (msg->easy_handle == ps->send_endpoint)
- {
- GNUNET_assert (CURLE_OK ==
- curl_easy_getinfo (msg->easy_handle,
- CURLINFO_RESPONSE_CODE,
- &http_result));
-#if DEBUG_CONNECTIONS
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Connection %X: HTTP PUT connection to peer `%s' (`%s') was closed with HTTP code %u\n",
- ps, GNUNET_i2s (&pc->identity),
- http_plugin_address_to_string (NULL, ps->addr,
- ps->addrlen), http_result);
-#endif
- /* Calling transmit continuation */
- while (ps->pending_msgs_tail != NULL)
- {
- cur_msg = ps->pending_msgs_tail;
- if (NULL != cur_msg->transmit_cont)
- {
- /* HTTP 1xx : Last message before here was informational */
- if ((http_result >= 100) && (http_result < 200))
- cur_msg->transmit_cont (cur_msg->transmit_cont_cls,
- &pc->identity, GNUNET_OK);
- /* HTTP 2xx: successful operations */
- if ((http_result >= 200) && (http_result < 300))
- cur_msg->transmit_cont (cur_msg->transmit_cont_cls,
- &pc->identity, GNUNET_OK);
- /* HTTP 3xx..5xx: error */
- if ((http_result >= 300) && (http_result < 600))
- cur_msg->transmit_cont (cur_msg->transmit_cont_cls,
- &pc->identity, GNUNET_SYSERR);
- }
- ps->queue_length_cur -= cur_msg->size;
- remove_http_message (ps, cur_msg);
- }
-
- ps->send_connected = GNUNET_NO;
- ps->send_active = GNUNET_NO;
- curl_multi_remove_handle (plugin->multi_handle, ps->send_endpoint);
- }
- if (msg->easy_handle == ps->recv_endpoint)
- {
-#if DEBUG_CONNECTIONS
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Connection %X: HTTP GET connection to peer `%s' (`%s') was closed with HTTP code %u\n",
- ps, GNUNET_i2s (&pc->identity),
- http_plugin_address_to_string (NULL, ps->addr,
- ps->addrlen), http_result);
-#endif
- ps->recv_connected = GNUNET_NO;
- ps->recv_active = GNUNET_NO;
- curl_multi_remove_handle (plugin->multi_handle, ps->recv_endpoint);
- }
- plugin->current_connections--;
- }
- if ((ps->recv_connected == GNUNET_NO) &&
- (ps->send_connected == GNUNET_NO))
- remove_session (pc, ps, GNUNET_YES, GNUNET_SYSERR);
- break;
- default:
- break;
- }
- }
- while ((msgs_in_queue > 0));
-}
-
-
-/**
- * Task performing curl operations
- * @param cls plugin as closure
- * @param tc gnunet scheduler task context
- */
-static void
-curl_perform (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
- struct Plugin *plugin = cls;
- static unsigned int handles_last_run;
- int running;
- CURLMcode mret;
-
- GNUNET_assert (cls != NULL);
-
- plugin->http_curl_task = GNUNET_SCHEDULER_NO_TASK;
- if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
- return;
- do
- {
- running = 0;
- mret = curl_multi_perform (plugin->multi_handle, &running);
- if ((running < handles_last_run) && (running > 0))
- curl_handle_finished (plugin);
- handles_last_run = running;
- }
- while (mret == CURLM_CALL_MULTI_PERFORM);
- curl_schedule (plugin);
-}
-
-
-/**
- * Function setting up file descriptors and scheduling task to run
- *
- * @param plugin plugin as closure
- * @return GNUNET_SYSERR for hard failure, GNUNET_OK for ok
- */
-static int
-curl_schedule (struct Plugin *plugin)
-{
- fd_set rs;
- fd_set ws;
- fd_set es;
- int max;
- struct GNUNET_NETWORK_FDSet *grs;
- struct GNUNET_NETWORK_FDSet *gws;
- long to;
- CURLMcode mret;
-
- /* Cancel previous scheduled task */
- if (plugin->http_curl_task != GNUNET_SCHEDULER_NO_TASK)
- {
- GNUNET_SCHEDULER_cancel (plugin->http_curl_task);
- plugin->http_curl_task = GNUNET_SCHEDULER_NO_TASK;
- }
-
- max = -1;
- FD_ZERO (&rs);
- FD_ZERO (&ws);
- FD_ZERO (&es);
- mret = curl_multi_fdset (plugin->multi_handle, &rs, &ws, &es, &max);
- if (mret != CURLM_OK)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("%s failed at %s:%d: `%s'\n"),
- "curl_multi_fdset", __FILE__, __LINE__,
- curl_multi_strerror (mret));
- return GNUNET_SYSERR;
- }
- mret = curl_multi_timeout (plugin->multi_handle, &to);
- if (mret != CURLM_OK)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("%s failed at %s:%d: `%s'\n"),
- "curl_multi_timeout", __FILE__, __LINE__,
- curl_multi_strerror (mret));
- return GNUNET_SYSERR;
- }
-
- grs = GNUNET_NETWORK_fdset_create ();
- gws = GNUNET_NETWORK_fdset_create ();
- GNUNET_NETWORK_fdset_copy_native (grs, &rs, max + 1);
- GNUNET_NETWORK_fdset_copy_native (gws, &ws, max + 1);
- plugin->http_curl_task =
- GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
- GNUNET_SCHEDULER_NO_TASK,
- (to ==
- -1) ?
- GNUNET_TIME_relative_multiply
- (GNUNET_TIME_UNIT_SECONDS,
- 5) :
- GNUNET_TIME_relative_multiply
- (GNUNET_TIME_UNIT_MILLISECONDS, to), grs,
- gws, &curl_perform, plugin);
- GNUNET_NETWORK_fdset_destroy (gws);
- GNUNET_NETWORK_fdset_destroy (grs);
- return GNUNET_OK;
-}
-
-
-#if DEBUG_CURL
-/**
- * Function to log curl debug messages with GNUNET_log
- * @param curl handle
- * @param type curl_infotype
- * @param data data
- * @param size size
- * @param cls closure
- * @return 0
- */
-static int
-curl_logger (CURL * curl, curl_infotype type, char *data, size_t size,
- void *cls)
-{
- if (type == CURLINFO_TEXT)
- {
- char text[size + 2];
-
- memcpy (text, data, size);
- if (text[size - 1] == '\n')
- text[size] = '\0';
- else
- {
- text[size] = '\n';
- text[size + 1] = '\0';
- }
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "CURL: Connection %X - %s", cls, text);
- }
- return 0;
-}
-#endif
-
-
-/**
- * Function setting up curl handle and selecting message to send
- *
- * @param plugin plugin
- * @param ps session
- * @return GNUNET_SYSERR on failure, GNUNET_NO if connecting, GNUNET_YES if ok
- */
-static int
-send_check_connections (struct Plugin *plugin, struct Session *ps)
-{
- CURLMcode mret;
- struct GNUNET_TIME_Relative timeout =
- GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT;
-
- if ((ps->direction == OUTBOUND) &&
- (plugin->current_connections < plugin->max_connect_per_transport))
- {
- /* RECV DIRECTION */
- /* Check if session is connected to receive data, otherwise connect to peer */
-
- if (ps->recv_connected == GNUNET_NO)
- {
- int fresh = GNUNET_NO;
-
- if (ps->recv_endpoint == NULL)
- {
- fresh = GNUNET_YES;
- ps->recv_endpoint = curl_easy_init ();
- }
-#if DEBUG_CURL
- curl_easy_setopt (ps->recv_endpoint, CURLOPT_VERBOSE, 1L);
- curl_easy_setopt (ps->recv_endpoint, CURLOPT_DEBUGFUNCTION, &curl_logger);
- curl_easy_setopt (ps->recv_endpoint, CURLOPT_DEBUGDATA,
- ps->recv_endpoint);
-#endif
-#if BUILD_HTTPS
- curl_easy_setopt (ps->recv_endpoint, CURLOPT_SSLVERSION,
- CURL_SSLVERSION_TLSv1);
- curl_easy_setopt (ps->recv_endpoint, CURLOPT_SSL_VERIFYPEER, 0);
- curl_easy_setopt (ps->recv_endpoint, CURLOPT_SSL_VERIFYHOST, 0);
-#endif
- curl_easy_setopt (ps->recv_endpoint, CURLOPT_URL, ps->url);
- curl_easy_setopt (ps->recv_endpoint, CURLOPT_HEADERFUNCTION,
- &curl_get_header_cb);
- curl_easy_setopt (ps->recv_endpoint, CURLOPT_WRITEHEADER, ps);
- curl_easy_setopt (ps->recv_endpoint, CURLOPT_READFUNCTION, curl_send_cb);
- curl_easy_setopt (ps->recv_endpoint, CURLOPT_READDATA, ps);
- curl_easy_setopt (ps->recv_endpoint, CURLOPT_WRITEFUNCTION,
- curl_receive_cb);
- curl_easy_setopt (ps->recv_endpoint, CURLOPT_WRITEDATA, ps);
- curl_easy_setopt (ps->recv_endpoint, CURLOPT_TIMEOUT,
- (long) timeout.rel_value);
- curl_easy_setopt (ps->recv_endpoint, CURLOPT_PRIVATE, ps);
- curl_easy_setopt (ps->recv_endpoint, CURLOPT_CONNECTTIMEOUT,
- HTTP_CONNECT_TIMEOUT);
- curl_easy_setopt (ps->recv_endpoint, CURLOPT_BUFFERSIZE,
- 2 * GNUNET_SERVER_MAX_MESSAGE_SIZE);
-#if CURL_TCP_NODELAY
- curl_easy_setopt (ps->recv_endpoint, CURLOPT_TCP_NODELAY, 1);
-#endif
- if (fresh == GNUNET_YES)
- {
- mret = curl_multi_add_handle (plugin->multi_handle, ps->recv_endpoint);
- if (mret != CURLM_OK)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- _("Connection: %X: %s failed at %s:%d: `%s'\n"), ps,
- "curl_multi_add_handle", __FILE__, __LINE__,
- curl_multi_strerror (mret));
- return GNUNET_SYSERR;
- }
- }
- if (plugin->http_curl_task != GNUNET_SCHEDULER_NO_TASK)
- {
- GNUNET_SCHEDULER_cancel (plugin->http_curl_task);
- plugin->http_curl_task = GNUNET_SCHEDULER_NO_TASK;
- }
- plugin->current_connections++;
- plugin->http_curl_task = GNUNET_SCHEDULER_add_now (&curl_perform, plugin);
- }
-
- /* waiting for receive direction */
- if (ps->recv_connected == GNUNET_NO)
- return GNUNET_NO;
-
- /* SEND DIRECTION */
- /* Check if session is connected to send data, otherwise connect to peer */
- if ((ps->send_connected == GNUNET_YES) && (ps->send_endpoint != NULL))
- {
- if (ps->send_active == GNUNET_YES)
- {
-#if DEBUG_CONNECTIONS
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Connection %X: outbound active, enqueueing message\n", ps);
-#endif
- return GNUNET_YES;
- }
- if (ps->send_active == GNUNET_NO)
- {
-#if DEBUG_CONNECTIONS
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Connection %X: outbound paused, unpausing existing connection and enqueueing message\n",
- ps);
-#endif
- if (CURLE_OK == curl_easy_pause (ps->send_endpoint, CURLPAUSE_CONT))
- {
- ps->send_active = GNUNET_YES;
- if (plugin->http_curl_task != GNUNET_SCHEDULER_NO_TASK)
- {
- GNUNET_SCHEDULER_cancel (plugin->http_curl_task);
- plugin->http_curl_task = GNUNET_SCHEDULER_NO_TASK;
- }
- plugin->http_curl_task =
- GNUNET_SCHEDULER_add_now (&curl_perform, plugin);
- return GNUNET_YES;
- }
- else
- return GNUNET_SYSERR;
- }
- }
- /* not connected, initiate connection */
- if ((ps->send_connected == GNUNET_NO) &&
- (plugin->current_connections < plugin->max_connect_per_transport))
- {
- int fresh = GNUNET_NO;
-
- if (NULL == ps->send_endpoint)
- {
- ps->send_endpoint = curl_easy_init ();
- fresh = GNUNET_YES;
- }
- GNUNET_assert (ps->send_endpoint != NULL);
- GNUNET_assert (NULL != ps->pending_msgs_tail);
-#if DEBUG_CONNECTIONS
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Connection %X: outbound not connected, initiating connection\n",
- ps);
-#endif
- ps->send_active = GNUNET_NO;
-
-#if DEBUG_CURL
- curl_easy_setopt (ps->send_endpoint, CURLOPT_VERBOSE, 1L);
- curl_easy_setopt (ps->send_endpoint, CURLOPT_DEBUGFUNCTION, &curl_logger);
- curl_easy_setopt (ps->send_endpoint, CURLOPT_DEBUGDATA,
- ps->send_endpoint);
-#endif
-#if BUILD_HTTPS
- curl_easy_setopt (ps->send_endpoint, CURLOPT_SSLVERSION,
- CURL_SSLVERSION_TLSv1);
- curl_easy_setopt (ps->send_endpoint, CURLOPT_SSL_VERIFYPEER, 0);
- curl_easy_setopt (ps->send_endpoint, CURLOPT_SSL_VERIFYHOST, 0);
-#endif
- curl_easy_setopt (ps->send_endpoint, CURLOPT_URL, ps->url);
- curl_easy_setopt (ps->send_endpoint, CURLOPT_PUT, 1L);
- curl_easy_setopt (ps->send_endpoint, CURLOPT_HEADERFUNCTION,
- &curl_put_header_cb);
- curl_easy_setopt (ps->send_endpoint, CURLOPT_WRITEHEADER, ps);
- curl_easy_setopt (ps->send_endpoint, CURLOPT_READFUNCTION, curl_send_cb);
- curl_easy_setopt (ps->send_endpoint, CURLOPT_READDATA, ps);
- curl_easy_setopt (ps->send_endpoint, CURLOPT_WRITEFUNCTION,
- curl_receive_cb);
- curl_easy_setopt (ps->send_endpoint, CURLOPT_READDATA, ps);
- curl_easy_setopt (ps->send_endpoint, CURLOPT_TIMEOUT,
- (long) timeout.rel_value);
- curl_easy_setopt (ps->send_endpoint, CURLOPT_PRIVATE, ps);
- curl_easy_setopt (ps->send_endpoint, CURLOPT_CONNECTTIMEOUT,
- HTTP_CONNECT_TIMEOUT);
- curl_easy_setopt (ps->send_endpoint, CURLOPT_BUFFERSIZE,
- 2 * GNUNET_SERVER_MAX_MESSAGE_SIZE);
-#if CURL_TCP_NODELAY
- curl_easy_setopt (ps->send_endpoint, CURLOPT_TCP_NODELAY, 1);
-#endif
- if (fresh == GNUNET_YES)
- {
- mret = curl_multi_add_handle (plugin->multi_handle, ps->send_endpoint);
- if (mret != CURLM_OK)
- {
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- _("Connection: %X: %s failed at %s:%d: `%s'\n"), ps,
- "curl_multi_add_handle", __FILE__, __LINE__,
- curl_multi_strerror (mret));
- return GNUNET_SYSERR;
- }
- }
- }
- if (plugin->http_curl_task != GNUNET_SCHEDULER_NO_TASK)
- {
- GNUNET_SCHEDULER_cancel (plugin->http_curl_task);
- plugin->http_curl_task = GNUNET_SCHEDULER_NO_TASK;
- }
- plugin->current_connections++;
- plugin->http_curl_task = GNUNET_SCHEDULER_add_now (&curl_perform, plugin);
- return GNUNET_YES;
- }
- if (ps->direction == INBOUND)
- {
- GNUNET_assert (NULL != ps->pending_msgs_tail);
- if ((ps->recv_connected == GNUNET_YES) && (ps->send_connected == GNUNET_YES)
- && (ps->recv_force_disconnect == GNUNET_NO) &&
- (ps->recv_force_disconnect == GNUNET_NO))
- return GNUNET_YES;
- }
- return GNUNET_SYSERR;
-}
-
-
-/**
- * select best session to transmit data to peer
- *
- * @param pc peer context of target peer
- * @param addr address of target peer
- * @param addrlen address length
- * @param force_address does transport service enforce address?
- * @param session session passed by transport service
- * @return selected session
- *
- */
-static struct Session *
-send_select_session (struct HTTP_PeerContext *pc, const void *addr,
- size_t addrlen, int force_address, struct Session *session)
-{
- struct Session *tmp = NULL;
- int addr_given = GNUNET_NO;
-
- if ((addr != NULL) && (addrlen > 0))
- addr_given = GNUNET_YES;
-
- if (force_address == GNUNET_YES)
- {
- /* check session given as argument */
- if ((session != NULL) && (addr_given == GNUNET_YES))
- {
- if (0 == memcmp (session->addr, addr, addrlen))
- {
- /* connection can not be used, since it is disconnected */
- if ((session->recv_force_disconnect == GNUNET_NO) &&
- (session->send_force_disconnect == GNUNET_NO))
- {
-#if DEBUG_SESSION_SELECTION
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Session %X selected: Using session passed by transport to send to forced address \n",
- session);
-#endif
- return session;
- }
- }
- }
- /* check last session used */
- if ((pc->last_session != NULL) && (addr_given == GNUNET_YES))
- {
- if (0 == memcmp (pc->last_session->addr, addr, addrlen))
- {
- /* connection can not be used, since it is disconnected */
- if ((pc->last_session->recv_force_disconnect == GNUNET_NO) &&
- (pc->last_session->send_force_disconnect == GNUNET_NO))
- {
-#if DEBUG_SESSION_SELECTION
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Session %X selected: Using last session used to send to forced address \n",
- pc->last_session);
-#endif
- return pc->last_session;
- }
- }
- }
- /* find session in existing sessions */
- tmp = pc->head;
- while ((tmp != NULL) && (addr_given == GNUNET_YES))
- {
- if (0 == memcmp (tmp->addr, addr, addrlen))
- {
- /* connection can not be used, since it is disconnected */
- if ((tmp->recv_force_disconnect == GNUNET_NO) &&
- (tmp->send_force_disconnect == GNUNET_NO))
- {
-#if DEBUG_SESSION_SELECTION
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Session %X selected: Using existing session to send to forced address \n",
- session);
-#endif
- return session;
- }
- }
- tmp = tmp->next;
- }
- /* no session to use */
- return NULL;
- }
- if ((force_address == GNUNET_NO) || (force_address == GNUNET_SYSERR))
- {
- /* check session given as argument */
- if (session != NULL)
- {
- /* connection can not be used, since it is disconnected */
- if ((session->recv_force_disconnect == GNUNET_NO) &&
- (session->send_force_disconnect == GNUNET_NO))
- {
-#if DEBUG_SESSION_SELECTION
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Session %X selected: Using session passed by transport to send not-forced address\n",
- session);
-#endif
- return session;
- }
- }
- /* check last session used */
- if (pc->last_session != NULL)
- {
- /* connection can not be used, since it is disconnected */
- if ((pc->last_session->recv_force_disconnect == GNUNET_NO) &&
- (pc->last_session->send_force_disconnect == GNUNET_NO))
- {
-#if DEBUG_SESSION_SELECTION
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Session %X selected: Using last session to send to not-forced address\n",
- pc->last_session);
-#endif
- return pc->last_session;
- }
- }
- /* find session in existing sessions */
- tmp = pc->head;
- while (tmp != NULL)
- {
- /* connection can not be used, since it is disconnected */
- if ((tmp->recv_force_disconnect == GNUNET_NO) &&
- (tmp->send_force_disconnect == GNUNET_NO))
- {
-#if DEBUG_SESSION_SELECTION
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Session %X selected: Using existing session to send to not-forced address\n",
- tmp);
-#endif
- return tmp;
- }
- tmp = tmp->next;
- }
- return NULL;
- }
- return NULL;
-}
-
-
-/**
- * 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 target who should receive this message
- * @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 session which session must be used (or NULL for "any")
- * @param addr the address to use (can be NULL if the plugin
- * is "on its own" (i.e. re-use existing TCP connection))
- * @param addrlen length of the address in bytes
- * @param force_address GNUNET_YES if the plugin MUST use the given address,
- * GNUNET_NO means the plugin may use any other address and
- * GNUNET_SYSERR means that only reliable existing
- * bi-directional connections should be used (regardless
- * of address)
- * @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, const struct GNUNET_PeerIdentity *target,
- const char *msgbuf, size_t msgbuf_size, unsigned int priority,
- struct GNUNET_TIME_Relative to, struct Session *session,
- const void *addr, size_t addrlen, int force_address,
- GNUNET_TRANSPORT_TransmitContinuation cont, void *cont_cls)
+
+/**
+ * Wrapper for IPv4 addresses.
+ */
+struct IPv6HttpAddressWrapper
{
- struct Plugin *plugin = cls;
- struct HTTP_Message *msg;
- struct HTTP_PeerContext *pc;
- struct Session *ps = NULL;
+ /**
+ * Linked list next
+ */
+ struct IPv6HttpAddressWrapper *next;
- GNUNET_assert (cls != NULL);
+ /**
+ * Linked list previous
+ */
+ struct IPv6HttpAddressWrapper *prev;
-#if DEBUG_HTTP
- char *force;
-
- if (force_address == GNUNET_YES)
- GNUNET_asprintf (&force, "forced addr.");
- else if (force_address == GNUNET_NO)
- GNUNET_asprintf (&force, "any addr.");
- else if (force_address == GNUNET_SYSERR)
- GNUNET_asprintf (&force, "reliable bi-direc. address addr.");
- else
- GNUNET_assert (0);
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Transport tells me to send %u bytes to `%s' using %s (%s) and session: %X\n",
- msgbuf_size, GNUNET_i2s (target), force,
- http_plugin_address_to_string (NULL, addr, addrlen), session);
- GNUNET_free (force);
-#endif
+ /**
+ * IPv6 address.
+ */
+ struct sockaddr_in6 addr GNUNET_PACKED;
+};
- pc = GNUNET_CONTAINER_multihashmap_get (plugin->peers, &target->hashPubKey);
- /* Peer unknown */
- if (pc == NULL)
- {
- pc = GNUNET_malloc (sizeof (struct HTTP_PeerContext));
- pc->plugin = plugin;
- pc->session_id_counter = 1;
- pc->last_session = NULL;
- memcpy (&pc->identity, target, sizeof (struct GNUNET_PeerIdentity));
- GNUNET_CONTAINER_multihashmap_put (plugin->peers, &pc->identity.hashPubKey,
- pc,
- GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_ONLY);
- GNUNET_STATISTICS_update (plugin->env->stats,
- gettext_noop ("# HTTP peers active"), 1,
- GNUNET_NO);
- }
- ps = send_select_session (pc, addr, addrlen, force_address, session);
- /* session not existing, but address forced -> creating new session */
- if (ps == NULL)
- {
- if ((addr != NULL) && (addrlen != 0))
- {
- ps = GNUNET_malloc (sizeof (struct Session));
-#if DEBUG_SESSION_SELECTION
- if (force_address == GNUNET_YES)
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "No existing connection & forced address: creating new session %X to peer %s\n",
- ps, GNUNET_i2s (target));
- if (force_address != GNUNET_YES)
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "No existing connection: creating new session %X to peer %s\n",
- ps, GNUNET_i2s (target));
-#endif
- ps->addr = GNUNET_malloc (addrlen);
- memcpy (ps->addr, addr, addrlen);
- ps->addrlen = addrlen;
- ps->direction = OUTBOUND;
- ps->recv_connected = GNUNET_NO;
- ps->recv_force_disconnect = GNUNET_NO;
- ps->send_connected = GNUNET_NO;
- ps->send_force_disconnect = GNUNET_NO;
- ps->pending_msgs_head = NULL;
- ps->pending_msgs_tail = NULL;
- ps->peercontext = pc;
- ps->session_id = pc->session_id_counter;
- ps->queue_length_cur = 0;
- ps->queue_length_max = GNUNET_SERVER_MAX_MESSAGE_SIZE;
- pc->session_id_counter++;
- ps->url = create_url (plugin, ps->addr, ps->addrlen, ps->session_id);
- if (ps->msgtok == NULL)
- ps->msgtok = GNUNET_SERVER_mst_create (&curl_receive_mst_cb, ps);
- GNUNET_CONTAINER_DLL_insert (pc->head, pc->tail, ps);
- GNUNET_STATISTICS_update (plugin->env->stats,
- gettext_noop
- ("# HTTP outbound sessions for peers active"),
- 1, GNUNET_NO);
- }
- else
- {
-#if DEBUG_HTTP
- 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));
-#endif
- return GNUNET_SYSERR;
- }
- }
- if (msgbuf_size >= (ps->queue_length_max - ps->queue_length_cur))
- {
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Queue %X full: %u bytes in queue available, message with %u is too big\n",
- ps, (ps->queue_length_max - ps->queue_length_cur), msgbuf_size);
- //return GNUNET_SYSERR;
- }
+/**
+ * Context for address to string conversion.
+ */
+struct PrettyPrinterContext
+{
+ /**
+ * Function to call with the result.
+ */
+ GNUNET_TRANSPORT_AddressStringCallback asc;
- /* create msg */
- 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);
- GNUNET_CONTAINER_DLL_insert (ps->pending_msgs_head, ps->pending_msgs_tail,
- msg);
- ps->queue_length_cur += msgbuf_size;
- if (send_check_connections (plugin, ps) == GNUNET_SYSERR)
- return GNUNET_SYSERR;
- if (force_address != GNUNET_YES)
- pc->last_session = ps;
- if (pc->last_session == NULL)
- pc->last_session = ps;
- return msg->size;
-}
+ /**
+ * Plugin
+ */
+ struct Plugin *plugin;
+
+ /**
+ * Clsoure for 'asc'.
+ */
+ void *asc_cls;
+
+ /**
+ * Port to add after the IP address.
+ */
+ uint16_t port;
+};
/**
- * 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
+ * Encapsulation of all of the state of the plugin.
*/
-static void
-http_plugin_disconnect (void *cls, const struct GNUNET_PeerIdentity *target)
-{
- struct Plugin *plugin = cls;
- struct HTTP_PeerContext *pc = NULL;
- struct Session *ps = NULL;
+struct Plugin;
- pc = GNUNET_CONTAINER_multihashmap_get (plugin->peers, &target->hashPubKey);
- if (pc == NULL)
- return;
- ps = pc->head;
- while (ps != NULL)
- {
- /* Telling transport that session is getting disconnected */
- plugin->env->session_end (plugin, target, ps);
- if (ps->direction == OUTBOUND)
- {
- if (ps->send_endpoint != NULL)
- {
- //GNUNET_assert(CURLM_OK == curl_multi_remove_handle(plugin->multi_handle,ps->send_endpoint));
- //curl_easy_cleanup(ps->send_endpoint);
- //ps->send_endpoint=NULL;
- ps->send_force_disconnect = GNUNET_YES;
- }
- if (ps->recv_endpoint != NULL)
- {
- //GNUNET_assert(CURLM_OK == curl_multi_remove_handle(plugin->multi_handle,ps->recv_endpoint));
- //curl_easy_cleanup(ps->recv_endpoint);
- //ps->recv_endpoint=NULL;
- ps->recv_force_disconnect = GNUNET_YES;
- }
- }
- if (ps->direction == INBOUND)
- {
- ps->recv_force_disconnect = GNUNET_YES;
- ps->send_force_disconnect = GNUNET_YES;
- }
- while (ps->pending_msgs_head != NULL)
- remove_http_message (ps, ps->pending_msgs_head);
- ps->recv_active = GNUNET_NO;
- ps->send_active = GNUNET_NO;
- ps = ps->next;
- }
-}
/**
GNUNET_free (ppc);
return;
}
- GNUNET_asprintf (&ret, "%s://%s:%d", PROTOCOL_PREFIX, hostname, ppc->port);
-
+ GNUNET_asprintf (&ret, "%s://%s:%d", ppc->plugin->protocol, hostname,
+ ppc->plugin->port);
ppc->asc (ppc->asc_cls, ret);
GNUNET_free (ret);
}
-
/**
* Convert the transports address to a nice, human-readable
* format.
GNUNET_TRANSPORT_AddressStringCallback asc,
void *asc_cls)
{
+ GNUNET_assert (cls != NULL);
struct PrettyPrinterContext *ppc;
const void *sb;
size_t sbs;
- struct sockaddr_in a4;
- struct sockaddr_in6 a6;
- const struct IPv4HttpAddress *t4;
- const struct IPv6HttpAddress *t6;
- uint16_t port;
+ uint16_t port = 0 ;
- if (addrlen == sizeof (struct IPv6HttpAddress))
+ if (addrlen == sizeof (struct sockaddr_in6))
{
- t6 = addr;
- memset (&a6, 0, sizeof (a6));
- a6.sin6_family = AF_INET6;
- a6.sin6_port = t6->port;
- memcpy (&a6.sin6_addr, &t6->ipv6_addr, sizeof (struct in6_addr));
- port = ntohs (t6->port);
- sb = &a6;
- sbs = sizeof (a6);
+ sb = addr;
+ sbs = sizeof (struct sockaddr_in6);
+
+ port = ntohs (((struct sockaddr_in6 *)addr)->sin6_port);
}
- else if (addrlen == sizeof (struct IPv4HttpAddress))
+ else if (addrlen == sizeof (struct sockaddr_in))
{
- t4 = addr;
- memset (&a4, 0, sizeof (a4));
- a4.sin_family = AF_INET;
- a4.sin_port = t4->port;
- a4.sin_addr.s_addr = t4->ipv4_addr;
- port = ntohs (t4->ipv4_addr);
- sb = &a4;
- sbs = sizeof (a4);
+ sb = &addr;
+ sbs = sizeof (struct sockaddr_in);
+ port = ntohs (((struct sockaddr_in *)addr)->sin_port);
}
else
{
ppc->asc = asc;
ppc->asc_cls = asc_cls;
ppc->port = port;
+ ppc->plugin = cls;
GNUNET_RESOLVER_hostname_get (sb, sbs, !numeric, timeout, &append_port, ppc);
}
static int
http_plugin_address_suggested (void *cls, const void *addr, size_t addrlen)
{
+
struct Plugin *plugin = cls;
- struct IPv4HttpAddress *v4;
- struct IPv6HttpAddress *v6;
struct IPv4HttpAddressWrapper *w_tv4 = plugin->ipv4_addr_head;
struct IPv6HttpAddressWrapper *w_tv6 = plugin->ipv6_addr_head;
GNUNET_assert (cls != NULL);
- if ((addrlen != sizeof (struct IPv4HttpAddress)) &&
- (addrlen != sizeof (struct IPv6HttpAddress)))
+ if ((addrlen != sizeof (struct sockaddr_in)) ||
+ (addrlen != sizeof (struct sockaddr_in6)))
return GNUNET_SYSERR;
- if (addrlen == sizeof (struct IPv4HttpAddress))
+
+ if (addrlen == sizeof (struct sockaddr_in))
{
- v4 = (struct IPv4HttpAddress *) addr;
- if (plugin->bind4_address != NULL)
- {
- if (0 ==
- memcmp (&plugin->bind4_address->sin_addr, &v4->ipv4_addr,
- sizeof (uint32_t)))
- return GNUNET_OK;
- else
- return GNUNET_SYSERR;
- }
while (w_tv4 != NULL)
{
- if (0 ==
- memcmp (&w_tv4->addr->ipv4_addr, &v4->ipv4_addr, sizeof (uint32_t)))
+ if (0 == memcmp (&w_tv4->addr, addr, sizeof (struct sockaddr_in)))
break;
w_tv4 = w_tv4->next;
}
else
return GNUNET_SYSERR;
}
- if (addrlen == sizeof (struct IPv6HttpAddress))
+ if (addrlen == sizeof (struct sockaddr_in6))
{
- v6 = (struct IPv6HttpAddress *) addr;
- if (plugin->bind6_address != NULL)
- {
- if (0 ==
- memcmp (&plugin->bind6_address->sin6_addr, &v6->ipv6_addr,
- sizeof (struct in6_addr)))
- return GNUNET_OK;
- else
- return GNUNET_SYSERR;
- }
while (w_tv6 != NULL)
{
if (0 ==
- memcmp (&w_tv6->addr->ipv6_addr, &v6->ipv6_addr,
- sizeof (struct in6_addr)))
+ memcmp (&w_tv6->addr, addr,
+ sizeof (struct sockaddr_in6)))
break;
w_tv6 = w_tv6->next;
}
else
return GNUNET_SYSERR;
}
- 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_TRANSPORT_ATS_Information distance[2];
+ struct GNUNET_TIME_Relative delay;
+
+ distance[0].type = htonl (GNUNET_TRANSPORT_ATS_QUALITY_NET_DISTANCE);
+ distance[0].value = htonl (1);
+ distance[1].type = htonl (GNUNET_TRANSPORT_ATS_ARRAY_TERMINATOR);
+ distance[1].value = htonl (0);
+
+ delay = plugin->env->receive (plugin->env->cls, &s->target, message, (const struct GNUNET_TRANSPORT_ATS_Information*) &distance, 2, s, s->addr, s->addrlen);
+ return delay;
+}
/**
* Function called for a quick conversion of the binary address to
* @param addrlen length of the address
* @return string representing the same address
*/
-static const char *
+const char *
http_plugin_address_to_string (void *cls, const void *addr, size_t addrlen)
{
- const struct IPv4HttpAddress *t4;
- const struct IPv6HttpAddress *t6;
- struct sockaddr_in a4;
- struct sockaddr_in6 a6;
+
+ struct sockaddr_in *a4;
+ struct sockaddr_in6 *a6;
char *address;
static char rbuf[INET6_ADDRSTRLEN + 13];
uint16_t port;
- int res;
+ int res = 0;
- if (addrlen == sizeof (struct IPv6HttpAddress))
+ if (addrlen == sizeof (struct sockaddr_in6))
{
+ a6 = (struct sockaddr_in6 *) addr;
address = GNUNET_malloc (INET6_ADDRSTRLEN);
- t6 = addr;
- a6.sin6_addr = t6->ipv6_addr;
- inet_ntop (AF_INET6, &(a6.sin6_addr), address, INET6_ADDRSTRLEN);
- port = ntohs (t6->port);
+ inet_ntop (AF_INET6, &(a6->sin6_addr), address, INET6_ADDRSTRLEN);
+ port = ntohs (a6->sin6_port);
}
- else if (addrlen == sizeof (struct IPv4HttpAddress))
+ else if (addrlen == sizeof (struct sockaddr_in))
{
+ a4 = (struct sockaddr_in *) addr;
address = GNUNET_malloc (INET_ADDRSTRLEN);
- t4 = addr;
- a4.sin_addr.s_addr = t4->ipv4_addr;
- inet_ntop (AF_INET, &(a4.sin_addr), address, INET_ADDRSTRLEN);
- port = ntohs (t4->port);
+ inet_ntop (AF_INET, &(a4->sin_addr), address, INET_ADDRSTRLEN);
+ port = ntohs (a4->sin_port);
}
else
{
- /* invalid address */
- return NULL;
+ /* invalid address */
+ 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 sockaddr_in6))
+ res = GNUNET_snprintf (rbuf, sizeof (rbuf), "%s://[%s]:%u/", protocol, address, port);
+ else if (addrlen == sizeof (struct sockaddr_in))
+ 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 (struct Plugin *plugin, const struct GNUNET_PeerIdentity *target,
+ struct Session * session,
+ const void *addr, size_t addrlen, int force_address)
+{
+ struct Session *s = NULL;
+ struct Session *t = NULL;
+ int e_peer;
+ int e_addr;
+
+ t = plugin->head;
+ if (t == NULL)
+ return NULL;
+ while (t != NULL)
+ {
+#if 0
+ GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
+ "Comparing peer `%s' address `%s' len %i session %X 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 %X \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)
+ {
+ if (0 == memcmp (addr, t->addr, addrlen))
+ {
+ e_addr = GNUNET_YES;
+ }
+ }
+ if ((t == session))
+ {
+ if(t->addrlen == session->addrlen)
+ {
+ if (0 == memcmp (session->addr, t->addr, t->addrlen))
+ {
+ e_addr = GNUNET_YES;
+ }
+ }
+ }
+ }
+
+ if ((e_peer == GNUNET_YES) && (force_address == GNUNET_NO))
+ {
+ s = t;
+ break;
+ }
+ if ((e_peer == GNUNET_YES) && (force_address == GNUNET_YES) && (e_addr == GNUNET_YES))
+ {
+ s = t;
+ break;
+ }
+ if ((e_peer == GNUNET_YES) && (force_address == GNUNET_SYSERR))
+ {
+ s = t;
+ break;
+ }
+ if (s != NULL)
+ break;
+ t = t->next;
+ }
+
+
+ return s;
+}
+
+void
+delete_session (struct Session *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,
+ GNUNET_TRANSPORT_TransmitContinuation cont, void *cont_cls)
+{
+ struct Session *s = NULL;
+
+ 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->transmit_cont = cont;
+ s->transmit_cont_cls = cont_cls;
+ s->next = NULL;
+ s->next_receive = GNUNET_TIME_absolute_get_forever();
+ return s;
+}
+
+void
+notify_session_end (void *cls,
+ const struct GNUNET_PeerIdentity *
+ peer, struct Session * s)
+{
+ struct Plugin *plugin = cls;
+
+ plugin->env->session_end (NULL, peer, s);
+ GNUNET_CONTAINER_DLL_remove (plugin->head, plugin->tail, s);
+ delete_session (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 target who should receive this message
+ * @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 session which session must be used (or NULL for "any")
+ * @param addr the address to use (can be NULL if the plugin
+ * is "on its own" (i.e. re-use existing TCP connection))
+ * @param addrlen length of the address in bytes
+ * @param force_address GNUNET_YES if the plugin MUST use the given address,
+ * GNUNET_NO means the plugin may use any other address and
+ * GNUNET_SYSERR means that only reliable existing
+ * bi-directional connections should be used (regardless
+ * of address)
+ * @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, const struct GNUNET_PeerIdentity *target,
+ const char *msgbuf, size_t msgbuf_size, unsigned int priority,
+ struct GNUNET_TIME_Relative to, struct Session *session,
+ const void *addr, size_t addrlen, int force_address,
+ GNUNET_TRANSPORT_TransmitContinuation cont, void *cont_cls)
+{
+ struct Plugin *plugin = cls;
+ struct HTTP_Message *msg;
+ GNUNET_assert (plugin != NULL);
+
+ int res = GNUNET_SYSERR;
+
+#if DEBUG_HTTP
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "Sending %u bytes to peer `%s' on address `%s' %X %i\n", msgbuf_size,
+ GNUNET_i2s (target), ((addr != NULL) && (addrlen != 0)) ? http_plugin_address_to_string(plugin, addr, addrlen) : "<inbound>", session, force_address);
+#endif
+
+ struct Session *s = NULL;
+
+ /* look for existing connection */
+ s = lookup_session (plugin, target, session, addr, addrlen, 1);
+#if DEBUG_HTTP
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "%s existing session: %s\n", (s!=NULL) ? "Found" : "NOT Found", ((s != NULL) && (s->inbound == GNUNET_YES)) ? "inbound" : "outbound");
+#endif
+
+ /* create new outbound connection */
+ if (s == NULL)
+ {
+ 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 (target));
+ return res;
+ }
+
+#if DEBUG_HTTP
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "Initiiating new connection to peer `%s'\n",
+ GNUNET_i2s (target));
+#endif
+ s = create_session (plugin, target, addr, addrlen, cont, cont_cls);
+ GNUNET_CONTAINER_DLL_insert (plugin->head, plugin->tail, s);
+ // initiate new connection
+ if (GNUNET_SYSERR == (res = client_connect (s)))
+ {
+ GNUNET_CONTAINER_DLL_remove (plugin->head, plugin->tail, s);
+ delete_session (s);
+ return GNUNET_SYSERR;
+ }
+ }
+
+ 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);
+
+ if (s->inbound == GNUNET_NO)
+ {
+#if DEBUG_HTTP
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "Using outbound client session to send to `%s'\n",
+ GNUNET_i2s (target));
+#endif
+ client_send (s, msg);
+ res = msgbuf_size;
}
+ if (s->inbound == GNUNET_YES)
+ {
+ server_send (s, msg);
+ res = msgbuf_size;
+#if DEBUG_HTTP
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "Using inbound server session to send to `%s'\n",
+ GNUNET_i2s (target));
+#endif
- res = GNUNET_snprintf (rbuf, sizeof (rbuf),
- (addrlen == sizeof (struct IPv6HttpAddress)) ? "[%s]:%u" : "%s:%u",
- address, port);
-
- GNUNET_free (address);
- GNUNET_assert (res != 0);
- return rbuf;
+ }
+ return res;
}
+
/**
- * Function called by the NAT subsystem suggesting another peer wants
- * to connect to us via connection reversal. Try to connect back to the
- * given IP.
+ * 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 addr address to try
- * @param addrlen number of bytes in addr
+ * @param target peer from which to disconnect
*/
static void
-try_connection_reversal (void *cls, const struct sockaddr *addr,
- socklen_t addrlen)
+http_plugin_disconnect (void *cls, const struct GNUNET_PeerIdentity *target)
{
+ struct Plugin *plugin = cls;
+ struct Session *next = NULL;
+ struct Session *s = plugin->head;
+ 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);
+ delete_session (s);
+ }
+ s = next;
+ }
}
static void
-tcp_nat_cb_add_addr (void *cls, int add_remove, const struct sockaddr *addr,
- socklen_t addrlen)
+nat_add_address (void *cls, int add_remove, const struct sockaddr *addr,
+ socklen_t addrlen)
{
struct Plugin *plugin = cls;
- struct IPv4HttpAddress *t4 = NULL;
struct IPv4HttpAddressWrapper *w_t4 = NULL;
- struct IPv6HttpAddress *t6 = NULL;
struct IPv6HttpAddressWrapper *w_t6 = NULL;
int af;
w_t4 = plugin->ipv4_addr_head;
while (w_t4 != NULL)
{
- int res = memcmp (&w_t4->addr->ipv4_addr,
- &((struct sockaddr_in *) addr)->sin_addr,
- sizeof (struct in_addr));
+ int res = memcmp (&w_t4->addr,
+ (struct sockaddr_in *) addr,
+ sizeof (struct sockaddr_in));
if (0 == res)
break;
if (w_t4 == NULL)
{
w_t4 = GNUNET_malloc (sizeof (struct IPv4HttpAddressWrapper));
- t4 = GNUNET_malloc (sizeof (struct IPv4HttpAddress));
- memcpy (&t4->ipv4_addr, &((struct sockaddr_in *) addr)->sin_addr,
- sizeof (struct in_addr));
- t4->port = htons (plugin->port_inbound);
-
- w_t4->addr = t4;
+ memcpy (&w_t4->addr, (struct sockaddr_in *) addr,
+ sizeof (struct sockaddr_in));
GNUNET_CONTAINER_DLL_insert (plugin->ipv4_addr_head,
plugin->ipv4_addr_tail, w_t4);
}
- plugin->env->notify_address (plugin->env->cls, add_remove, w_t4->addr,
- sizeof (struct IPv4HttpAddress));
+#if DEBUG_HTTP
+ 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 sockaddr_in)));
+#endif
+ plugin->env->notify_address (plugin->env->cls, add_remove, &w_t4->addr, sizeof (struct sockaddr_in));
break;
case AF_INET6:
w_t6 = plugin->ipv6_addr_head;
while (w_t6)
{
- int res = memcmp (&w_t6->addr->ipv6_addr,
- &((struct sockaddr_in6 *) addr)->sin6_addr,
- sizeof (struct in6_addr));
+ int res = memcmp (&w_t6->addr,
+ (struct sockaddr_in6 *) addr,
+ sizeof (struct sockaddr_in6));
if (0 == res)
break;
if (w_t6 == NULL)
{
w_t6 = GNUNET_malloc (sizeof (struct IPv6HttpAddressWrapper));
- t6 = GNUNET_malloc (sizeof (struct IPv6HttpAddress));
-
- memcpy (&t6->ipv6_addr, &((struct sockaddr_in6 *) addr)->sin6_addr,
- sizeof (struct in6_addr));
- t6->port = htons (plugin->port_inbound);
-
- w_t6->addr = t6;
+ memcpy (&w_t6->addr, (struct sockaddr_in6 *) addr,
+ sizeof (struct sockaddr_in6));
GNUNET_CONTAINER_DLL_insert (plugin->ipv6_addr_head,
plugin->ipv6_addr_tail, w_t6);
}
- plugin->env->notify_address (plugin->env->cls, add_remove, w_t6->addr,
- sizeof (struct IPv6HttpAddress));
+#if DEBUG_HTTP
+ 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->addr, sizeof (struct sockaddr_in6)));
+#endif
+ plugin->env->notify_address (plugin->env->cls, add_remove, &w_t6->addr, sizeof (struct sockaddr_in6));
break;
default:
return;
}
static void
-tcp_nat_cb_remove_addr (void *cls, int add_remove, const struct sockaddr *addr,
- socklen_t addrlen)
+nat_remove_address (void *cls, int add_remove, const struct sockaddr *addr,
+ socklen_t addrlen)
{
struct Plugin *plugin = cls;
struct IPv4HttpAddressWrapper *w_t4 = NULL;
w_t4 = plugin->ipv4_addr_head;
while (w_t4 != NULL)
{
- int res = memcmp (&w_t4->addr->ipv4_addr,
+ int res = memcmp (&(w_t4->addr.sin_addr),
&((struct sockaddr_in *) addr)->sin_addr,
sizeof (struct in_addr));
}
if (w_t4 == NULL)
return;
- plugin->env->notify_address (plugin->env->cls, add_remove, w_t4->addr,
- sizeof (struct IPv4HttpAddress));
+
+#if DEBUG_HTTP
+ 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 sockaddr_in)));
+#endif
+ plugin->env->notify_address (plugin->env->cls, add_remove, &w_t4->addr,
+ sizeof (struct sockaddr_in));
GNUNET_CONTAINER_DLL_remove (plugin->ipv4_addr_head, plugin->ipv4_addr_tail,
w_t4);
- GNUNET_free (w_t4->addr);
GNUNET_free (w_t4);
break;
case AF_INET6:
w_t6 = plugin->ipv6_addr_head;
while (w_t6 != NULL)
{
- int res = memcmp (&w_t6->addr->ipv6_addr,
+ int res = memcmp (&(w_t6->addr.sin6_addr),
&((struct sockaddr_in6 *) addr)->sin6_addr,
sizeof (struct in6_addr));
}
if (w_t6 == NULL)
return;
- plugin->env->notify_address (plugin->env->cls, add_remove, w_t6->addr,
- sizeof (struct IPv6HttpAddress));
+#if DEBUG_HTTP
+ 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->addr, sizeof (struct sockaddr_in6)));
+#endif
+ plugin->env->notify_address (plugin->env->cls, add_remove, &w_t6->addr,
+ sizeof (struct sockaddr_in6 ));
GNUNET_CONTAINER_DLL_remove (plugin->ipv6_addr_head, plugin->ipv6_addr_tail,
w_t6);
- GNUNET_free (w_t6->addr);
GNUNET_free (w_t6);
break;
default:
* @param addrlen actual lenght of the address
*/
static void
-tcp_nat_port_map_callback (void *cls, int add_remove,
- const struct sockaddr *addr, socklen_t addrlen)
+nat_port_map_callback (void *cls, int add_remove, const struct sockaddr *addr,
+ socklen_t addrlen)
{
GNUNET_assert (cls != NULL);
#if DEBUG_HTTP
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, "NPMC called to %s address `%s'\n",
- (add_remove == GNUNET_YES) ? "remove" : "add",
+ struct Plugin *plugin = cls;
+#endif
+ static int limit;
+#if DEBUG_HTTP
+ 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));
#endif
/* convert 'addr' to our internal format */
switch (add_remove)
{
case GNUNET_YES:
- tcp_nat_cb_add_addr (cls, add_remove, addr, addrlen);
+ // FIXME DEBUGGING
+ if (limit < 1)
+ nat_add_address (cls, add_remove, addr, addrlen);
+ limit++;
+ // FIXME END
break;
case GNUNET_NO:
- tcp_nat_cb_remove_addr (cls, add_remove, addr, addrlen);
+ nat_remove_address (cls, add_remove, addr, addrlen);
break;
}
}
-/**
- * Exit point from the plugin.
- */
-void *
-LIBGNUNET_PLUGIN_TRANSPORT_DONE (void *cls)
-{
- struct GNUNET_TRANSPORT_PluginFunctions *api = cls;
- struct Plugin *plugin = api->cls;
- CURLMcode mret;
- struct IPv4HttpAddressWrapper *w_t4;
- struct IPv6HttpAddressWrapper *w_t6;
- GNUNET_assert (cls != NULL);
+static void
+start_report_addresses (struct Plugin *plugin)
+{
+ int res = GNUNET_OK;
+ struct sockaddr **addrs;
+ socklen_t *addrlens;
- if (plugin->nat != NULL)
- GNUNET_NAT_unregister (plugin->nat);
+ res =
+ GNUNET_SERVICE_get_server_addresses (plugin->name, plugin->env->cfg,
+ &addrs, &addrlens);
+#if 0
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ _("FOUND %u addresses\n"),res);
+#endif
- if (plugin->http_server_daemon_v4 != NULL)
- {
- MHD_stop_daemon (plugin->http_server_daemon_v4);
- plugin->http_server_daemon_v4 = NULL;
- }
- if (plugin->http_server_daemon_v6 != NULL)
+ if (res != GNUNET_SYSERR)
{
- MHD_stop_daemon (plugin->http_server_daemon_v6);
- plugin->http_server_daemon_v6 = NULL;
- }
- if (plugin->http_server_task_v4 != GNUNET_SCHEDULER_NO_TASK)
- {
- GNUNET_SCHEDULER_cancel (plugin->http_server_task_v4);
- plugin->http_server_task_v4 = GNUNET_SCHEDULER_NO_TASK;
+ 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);
}
- if (plugin->http_server_task_v6 != GNUNET_SCHEDULER_NO_TASK)
+ else
{
- GNUNET_SCHEDULER_cancel (plugin->http_server_task_v6);
- plugin->http_server_task_v6 = GNUNET_SCHEDULER_NO_TASK;
+ 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->addr);
GNUNET_free (w_t4);
}
w_t6 = plugin->ipv6_addr_head;
GNUNET_CONTAINER_DLL_remove (plugin->ipv6_addr_head, plugin->ipv6_addr_tail,
w_t6);
- GNUNET_free (w_t6->addr);
GNUNET_free (w_t6);
}
+}
- /* free all peer information */
- if (plugin->peers != NULL)
+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"))
{
- GNUNET_CONTAINER_multihashmap_iterate (plugin->peers,
- &remove_peer_context_Iterator,
- plugin);
- GNUNET_CONTAINER_multihashmap_destroy (plugin->peers);
+ plugin->ipv4 =
+ GNUNET_CONFIGURATION_get_value_yesno (plugin->env->cfg, plugin->name,
+ "USE_IPv4");
}
- if (plugin->multi_handle != NULL)
+ else
+ plugin->ipv4 = GNUNET_YES;
+
+ /* Use IPv6? */
+ if (GNUNET_CONFIGURATION_have_value
+ (plugin->env->cfg, plugin->name, "USE_IPv6"))
{
- mret = curl_multi_cleanup (plugin->multi_handle);
- if (CURLM_OK != mret)
- GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
- "curl multihandle clean up failed\n");
- plugin->multi_handle = NULL;
+ plugin->ipv6 =
+ GNUNET_CONFIGURATION_get_value_yesno (plugin->env->cfg, plugin->name,
+ "USE_IPv6");
}
- curl_global_cleanup ();
+ else
+ plugin->ipv6 = GNUNET_YES;
- if (plugin->http_curl_task != GNUNET_SCHEDULER_NO_TASK)
+ if ((plugin->ipv4 == GNUNET_NO) && (plugin->ipv6 == GNUNET_NO))
{
- GNUNET_SCHEDULER_cancel (plugin->http_curl_task);
- plugin->http_curl_task = GNUNET_SCHEDULER_NO_TASK;
+ 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;
- GNUNET_free_non_null (plugin->bind4_address);
- GNUNET_free_non_null (plugin->bind6_address);
- GNUNET_free_non_null (plugin->bind_hostname);
-#if BUILD_HTTPS
- GNUNET_free_non_null (plugin->crypto_init);
- GNUNET_free_non_null (plugin->cert);
- GNUNET_free_non_null (plugin->key);
-#endif
- GNUNET_free (plugin);
- GNUNET_free (api);
-#if DEBUG_HTTP
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Unload %s plugin complete...\n",
- PROTOCOL_PREFIX);
-#endif
- return NULL;
-}
+ 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;
-#if BUILD_HTTPS
-static char *
-load_certificate (const char *file)
-{
- struct GNUNET_DISK_FileHandle *gn_file;
- struct stat fstat;
- char *text = NULL;
- if (0 != STAT (file, &fstat))
- return NULL;
- text = GNUNET_malloc (fstat.st_size + 1);
- gn_file =
- GNUNET_DISK_file_open (file, GNUNET_DISK_OPEN_READ,
- GNUNET_DISK_PERM_USER_READ);
- if (gn_file == NULL)
+ 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_free (text);
- return NULL;
+ 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);
}
- if (GNUNET_SYSERR == GNUNET_DISK_file_read (gn_file, text, fstat.st_size))
+
+
+ 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_free (text);
- GNUNET_DISK_file_close (gn_file);
- return NULL;
+ 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);
}
- text[fstat.st_size] = '\0';
- GNUNET_DISK_file_close (gn_file);
- return text;
-}
-#endif
+ /* 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;
+}
+
/**
* Entry point for the plugin.
*/
LIBGNUNET_PLUGIN_TRANSPORT_INIT (void *cls)
{
struct GNUNET_TRANSPORT_PluginEnvironment *env = cls;
- struct Plugin *plugin;
struct GNUNET_TRANSPORT_PluginFunctions *api;
- struct GNUNET_TIME_Relative gn_timeout;
- long long unsigned int port;
- unsigned long long tneigh;
- struct sockaddr **addrs;
- socklen_t *addrlens;
- int ret;
- char *component_name;
-
-#if BUILD_HTTPS
- char *key_file = NULL;
- char *cert_file = NULL;
-#endif
-
- GNUNET_assert (cls != NULL);
-#if DEBUG_HTTP
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Starting %s plugin...\n",
- PROTOCOL_PREFIX);
-#endif
- GNUNET_asprintf (&component_name, "transport-%s", PROTOCOL_PREFIX);
+ struct Plugin *plugin;
+ int res;
plugin = GNUNET_malloc (sizeof (struct Plugin));
- plugin->stats = env->stats;
plugin->env = env;
- plugin->peers = NULL;
- plugin->bind4_address = NULL;
- plugin->bind6_address = NULL;
- plugin->use_ipv6 = GNUNET_YES;
- plugin->use_ipv4 = GNUNET_YES;
- plugin->use_localaddresses = GNUNET_NO;
-
api = GNUNET_malloc (sizeof (struct GNUNET_TRANSPORT_PluginFunctions));
api->cls = plugin;
api->send = &http_plugin_send;
api->check_address = &http_plugin_address_suggested;
api->address_to_string = &http_plugin_address_to_string;
- /* Hashing our identity to use it in URLs */
- GNUNET_CRYPTO_hash_to_enc (&(plugin->env->my_identity->hashPubKey),
- &plugin->my_ascii_hash_ident);
-
-
- if (GNUNET_OK !=
- GNUNET_CONFIGURATION_get_value_number (env->cfg, component_name,
- "MAX_CONNECTIONS", &tneigh))
- tneigh = 128;
- plugin->max_connect_per_transport = tneigh;
-
-
- /* Use IPv6? */
- if (GNUNET_CONFIGURATION_have_value (env->cfg, component_name, "USE_IPv6"))
- {
- plugin->use_ipv6 =
- GNUNET_CONFIGURATION_get_value_yesno (env->cfg, component_name,
- "USE_IPv6");
- }
- /* Use IPv4? */
- if (GNUNET_CONFIGURATION_have_value (env->cfg, component_name, "USE_IPv4"))
- {
- plugin->use_ipv4 =
- GNUNET_CONFIGURATION_get_value_yesno (env->cfg, component_name,
- "USE_IPv4");
- }
- /* use local addresses? */
+#if BUILD_HTTPS
+ plugin->name = "transport-https";
+ plugin->protocol = "https";
+#else
+ plugin->name = "transport-http";
+ plugin->protocol = "http";
+#endif
+ /* Configure plugin from configuration */
- if (GNUNET_CONFIGURATION_have_value
- (env->cfg, component_name, "USE_LOCALADDR"))
- {
- plugin->use_localaddresses =
- GNUNET_CONFIGURATION_get_value_yesno (env->cfg, component_name,
- "USE_LOCALADDR");
- }
- /* Reading port number from config file */
- if ((GNUNET_OK !=
- GNUNET_CONFIGURATION_get_value_number (env->cfg, component_name, "PORT",
- &port)) || (port > 65535))
+ res = configure_plugin (plugin);
+ if (res == GNUNET_SYSERR)
{
- GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, component_name,
- _
- ("Require valid port number for transport plugin `%s' in configuration!\n"),
- PROTOCOL_PREFIX);
- GNUNET_free (component_name);
- LIBGNUNET_PLUGIN_TRANSPORT_DONE (api);
+ GNUNET_free_non_null (plugin->server_addr_v4);
+ GNUNET_free_non_null (plugin->server_addr_v6);
+ GNUNET_free (plugin);
+ GNUNET_free (api);
return NULL;
}
- /* Reading ipv4 addresse to bind to from config file */
- if ((plugin->use_ipv4 == GNUNET_YES) &&
- (GNUNET_CONFIGURATION_have_value (env->cfg, component_name, "BINDTO4")))
+ /* Start client */
+ res = client_start (plugin);
+ if (res == GNUNET_SYSERR)
{
- GNUNET_break (GNUNET_OK ==
- GNUNET_CONFIGURATION_get_value_string (env->cfg,
- component_name,
- "BINDTO4",
- &plugin->bind_hostname));
- plugin->bind4_address = GNUNET_malloc (sizeof (struct sockaddr_in));
- plugin->bind4_address->sin_family = AF_INET;
- plugin->bind4_address->sin_port = htons (port);
-
- if (plugin->bind_hostname != NULL)
- {
- if (inet_pton
- (AF_INET, plugin->bind_hostname,
- &plugin->bind4_address->sin_addr) <= 0)
- {
- GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, component_name,
- _
- ("Misconfigured address to bind to in configuration!\n"));
- GNUNET_free (plugin->bind4_address);
- GNUNET_free (plugin->bind_hostname);
- plugin->bind_hostname = NULL;
- plugin->bind4_address = NULL;
- }
- }
+ GNUNET_free_non_null (plugin->server_addr_v4);
+ GNUNET_free_non_null (plugin->server_addr_v6);
+ GNUNET_free (plugin);
+ GNUNET_free (api);
+ return NULL;
}
- /* Reading ipv4 addresse to bind to from config file */
- if ((plugin->use_ipv6 == GNUNET_YES) &&
- (GNUNET_CONFIGURATION_have_value (env->cfg, component_name, "BINDTO6")))
+ /* Start server */
+ res = server_start (plugin);
+ if (res == GNUNET_SYSERR)
{
- if (GNUNET_OK ==
- GNUNET_CONFIGURATION_get_value_string (env->cfg, component_name,
- "BINDTO6",
- &plugin->bind_hostname))
- {
- plugin->bind6_address = GNUNET_malloc (sizeof (struct sockaddr_in6));
- plugin->bind6_address->sin6_family = AF_INET6;
- plugin->bind6_address->sin6_port = htons (port);
- if (plugin->bind_hostname != NULL)
- {
- if (inet_pton
- (AF_INET6, plugin->bind_hostname,
- &plugin->bind6_address->sin6_addr) <= 0)
- {
- GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, component_name,
- _
- ("Misconfigured address to bind to in configuration!\n"));
- GNUNET_free (plugin->bind6_address);
- GNUNET_free (plugin->bind_hostname);
- plugin->bind_hostname = NULL;
- plugin->bind6_address = NULL;
- }
- }
- }
- }
+ server_stop (plugin);
+ client_stop (plugin);
-#if BUILD_HTTPS
- /* Reading HTTPS crypto related configuration */
- /* Get crypto init string from config */
- if ((GNUNET_OK !=
- GNUNET_CONFIGURATION_get_value_string (env->cfg, "transport-https",
- "CRYPTO_INIT",
- &plugin->crypto_init)) ||
- (GNUNET_OK !=
- GNUNET_CONFIGURATION_get_value_filename (env->cfg, "transport-https",
- "KEY_FILE", &key_file)) ||
- (GNUNET_OK !=
- GNUNET_CONFIGURATION_get_value_filename (env->cfg, "transport-https",
- "CERT_FILE", &cert_file)))
- {
- GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, "https",
- _
- ("Required configuration options missing in section `%s'\n"),
- "transport-https");
- GNUNET_free (component_name);
- GNUNET_free_non_null (key_file);
- GNUNET_free_non_null (cert_file);
- LIBGNUNET_PLUGIN_TRANSPORT_DONE (api);
+ GNUNET_free_non_null (plugin->server_addr_v4);
+ GNUNET_free_non_null (plugin->server_addr_v6);
+ GNUNET_free (plugin);
+ GNUNET_free (api);
return NULL;
}
- /* read key & certificates from file */
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "Loading TLS certificate `%s' `%s'\n",
- key_file, cert_file);
-
- plugin->key = load_certificate (key_file);
- plugin->cert = load_certificate (cert_file);
+ /* Report addresses to transport service */
+ start_report_addresses (plugin);
- if ((plugin->key == NULL) || (plugin->cert == NULL))
- {
- struct GNUNET_OS_Process *certcreation;
-
- GNUNET_free_non_null (plugin->key);
- plugin->key = NULL;
- GNUNET_free_non_null (plugin->cert);
- plugin->cert = NULL;
-#if DEBUG_HTTP
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "No usable TLS certificate found, creating certificate\n");
-#endif
- errno = 0;
- certcreation =
- GNUNET_OS_start_process (NULL, NULL,
- "gnunet-transport-certificate-creation",
- "gnunet-transport-certificate-creation",
- key_file, cert_file, NULL);
- if (certcreation == NULL)
- {
- GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, "https",
- _
- ("Could not create a new TLS certificate, program `gnunet-transport-certificate-creation' could not be started!\n"));
- GNUNET_free (key_file);
- GNUNET_free (cert_file);
- GNUNET_free (component_name);
- LIBGNUNET_PLUGIN_TRANSPORT_DONE (api);
- return NULL;
- }
- GNUNET_assert (GNUNET_OK == GNUNET_OS_process_wait (certcreation));
- GNUNET_OS_process_close (certcreation);
- plugin->key = load_certificate (key_file);
- plugin->cert = load_certificate (cert_file);
- }
- if ((plugin->key == NULL) || (plugin->cert == NULL))
- {
- GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, "https",
- _
- ("No usable TLS certificate found and creating one failed!\n"),
- "transport-https");
- GNUNET_free (key_file);
- GNUNET_free (cert_file);
- GNUNET_free (component_name);
- LIBGNUNET_PLUGIN_TRANSPORT_DONE (api);
- return NULL;
- }
- GNUNET_free (key_file);
- GNUNET_free (cert_file);
#if DEBUG_HTTP
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "TLS certificate loaded\n");
-#endif
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "Plugin `%s' loaded\n", plugin->name);
#endif
- GNUNET_assert ((port > 0) && (port <= 65535));
- plugin->port_inbound = port;
- gn_timeout = GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT;
- unsigned int timeout = (gn_timeout.rel_value) / 1000;
+ return api;
+}
- if ((plugin->http_server_daemon_v6 == NULL) &&
- (plugin->use_ipv6 == GNUNET_YES) && (port != 0))
- {
- struct sockaddr *tmp = (struct sockaddr *) plugin->bind6_address;
- plugin->http_server_daemon_v6 = MHD_start_daemon (
-#if DEBUG_MHD
- MHD_USE_DEBUG |
-#endif
-#if BUILD_HTTPS
- MHD_USE_SSL |
-#endif
- MHD_USE_IPv6, port,
- &mhd_accept_cb, plugin,
- &mhd_access_cb, plugin,
- MHD_OPTION_SOCK_ADDR,
- tmp,
- MHD_OPTION_CONNECTION_LIMIT,
- (unsigned int)
- plugin->max_connect_per_transport,
-#if BUILD_HTTPS
- MHD_OPTION_HTTPS_PRIORITIES,
- plugin->crypto_init,
- MHD_OPTION_HTTPS_MEM_KEY,
- plugin->key,
- MHD_OPTION_HTTPS_MEM_CERT,
- plugin->cert,
-#endif
- MHD_OPTION_CONNECTION_TIMEOUT,
- (unsigned int) timeout,
- MHD_OPTION_CONNECTION_MEMORY_LIMIT,
- (size_t) (2 *
- GNUNET_SERVER_MAX_MESSAGE_SIZE),
- MHD_OPTION_NOTIFY_COMPLETED,
- &mhd_termination_cb,
- plugin,
- MHD_OPTION_EXTERNAL_LOGGER,
- mhd_logger,
- plugin->mhd_log,
- MHD_OPTION_END);
- }
- if ((plugin->http_server_daemon_v4 == NULL) &&
- (plugin->use_ipv4 == GNUNET_YES) && (port != 0))
- {
- plugin->http_server_daemon_v4 = MHD_start_daemon (
-#if DEBUG_MHD
- MHD_USE_DEBUG |
-#endif
-#if BUILD_HTTPS
- MHD_USE_SSL |
-#endif
- MHD_NO_FLAG, port,
- &mhd_accept_cb, plugin,
- &mhd_access_cb, plugin,
- MHD_OPTION_SOCK_ADDR,
- (struct sockaddr_in *)
- plugin->bind4_address,
- MHD_OPTION_CONNECTION_LIMIT,
- (unsigned int)
- plugin->max_connect_per_transport,
-#if BUILD_HTTPS
- MHD_OPTION_HTTPS_PRIORITIES,
- plugin->crypto_init,
- MHD_OPTION_HTTPS_MEM_KEY,
- plugin->key,
- MHD_OPTION_HTTPS_MEM_CERT,
- plugin->cert,
-#endif
- MHD_OPTION_CONNECTION_TIMEOUT,
- (unsigned int) timeout,
- MHD_OPTION_CONNECTION_MEMORY_LIMIT,
- (size_t) (2 *
- GNUNET_SERVER_MAX_MESSAGE_SIZE),
- MHD_OPTION_NOTIFY_COMPLETED,
- &mhd_termination_cb,
- plugin,
- MHD_OPTION_EXTERNAL_LOGGER,
- mhd_logger,
- plugin->mhd_log,
- MHD_OPTION_END);
- }
- if (plugin->http_server_daemon_v4 != NULL)
- plugin->http_server_task_v4 =
- http_server_daemon_prepare (plugin, plugin->http_server_daemon_v4);
- if (plugin->http_server_daemon_v6 != NULL)
- plugin->http_server_task_v6 =
- http_server_daemon_prepare (plugin, plugin->http_server_daemon_v6);
+/**
+ * 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 = NULL;
+ /* Stop reporting addresses to transport service */
+ stop_report_addresses (plugin);
- if (plugin->http_server_task_v4 != GNUNET_SCHEDULER_NO_TASK)
+ /* cleaning up sessions */
+ s = plugin->head;
+ while (s != NULL)
{
+ struct Session *t = s->next;
#if DEBUG_HTTP
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Starting MHD with IPv4 bound to %s with port %u\n",
- (plugin->bind_hostname !=
- NULL) ? plugin->bind_hostname : "every address", port);
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "Disconnecting `%s' \n", GNUNET_i2s (&s->target));
#endif
+ 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);
+ delete_session (s);
+ s = t;
}
- else if ((plugin->http_server_task_v6 != GNUNET_SCHEDULER_NO_TASK) &&
- (plugin->http_server_task_v4 != GNUNET_SCHEDULER_NO_TASK))
- {
+
#if DEBUG_HTTP
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Starting MHD with IPv6 bound to %s with port %u\n",
- (plugin->bind_hostname !=
- NULL) ? plugin->bind_hostname : "every address", port);
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "Stopping server\n");
#endif
- }
- else if ((plugin->http_server_task_v6 != GNUNET_SCHEDULER_NO_TASK) &&
- (plugin->http_server_task_v4 == GNUNET_SCHEDULER_NO_TASK))
- {
+ /* Stop server */
+ server_stop (plugin);
+
#if DEBUG_HTTP
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Starting MHD with IPv4 and IPv6 bound to %s with port %u\n",
- (plugin->bind_hostname !=
- NULL) ? plugin->bind_hostname : "every address", port);
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "Stopping client\n");
#endif
- }
- else
- {
- char *tmp = NULL;
-
- if ((plugin->use_ipv6 == GNUNET_YES) && (plugin->use_ipv4 == GNUNET_YES))
- GNUNET_asprintf (&tmp, "with IPv4 and IPv6 enabled");
- if ((plugin->use_ipv6 == GNUNET_NO) && (plugin->use_ipv4 == GNUNET_YES))
- GNUNET_asprintf (&tmp, "with IPv4 enabled");
- if ((plugin->use_ipv6 == GNUNET_YES) && (plugin->use_ipv4 == GNUNET_NO))
- GNUNET_asprintf (&tmp, "with IPv6 enabled");
- if ((plugin->use_ipv6 == GNUNET_NO) && (plugin->use_ipv4 == GNUNET_NO))
- GNUNET_asprintf (&tmp, "with NO IP PROTOCOL enabled");
- GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
- _
- ("HTTP Server with %s could not be started on port %u! %s plugin failed!\n"),
- tmp, port, PROTOCOL_PREFIX);
- GNUNET_free (tmp);
- GNUNET_free (component_name);
- LIBGNUNET_PLUGIN_TRANSPORT_DONE (api);
- return NULL;
- }
+ /* Stop client */
+ client_stop (plugin);
- /* Initializing cURL */
- curl_global_init (CURL_GLOBAL_ALL);
- plugin->multi_handle = curl_multi_init ();
- if (NULL == plugin->multi_handle)
- {
- GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, component_name,
- _
- ("Could not initialize curl multi handle, failed to start %s plugin!\n"),
- PROTOCOL_PREFIX);
- GNUNET_free (component_name);
- LIBGNUNET_PLUGIN_TRANSPORT_DONE (api);
- return NULL;
- }
-
- ret =
- GNUNET_SERVICE_get_server_addresses (component_name, env->cfg, &addrs,
- &addrlens);
-
- if (ret != GNUNET_SYSERR)
- {
- plugin->nat =
- GNUNET_NAT_register (env->cfg, GNUNET_YES, port, (unsigned int) ret,
- (const struct sockaddr **) addrs, addrlens,
- &tcp_nat_port_map_callback,
- &try_connection_reversal, plugin);
- while (ret > 0)
- {
- ret--;
- GNUNET_assert (addrs[ret] != NULL);
- GNUNET_free (addrs[ret]);
- }
- GNUNET_free_non_null (addrs);
- GNUNET_free_non_null (addrlens);
- }
- else
- {
- plugin->nat =
- GNUNET_NAT_register (env->cfg, GNUNET_YES, 0, 0, NULL, NULL, NULL,
- &try_connection_reversal, plugin);
- }
+#if DEBUG_HTTP
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "Plugin `%s' unloaded\n", plugin->name);
+#endif
- plugin->peers = GNUNET_CONTAINER_multihashmap_create (10);
+ GNUNET_free_non_null (plugin->server_addr_v4);
+ GNUNET_free_non_null (plugin->server_addr_v6);
+ GNUNET_free (plugin);
+ GNUNET_free (api);
- GNUNET_free (component_name);
- //GNUNET_SCHEDULER_add_now(address_notification, plugin);
- return api;
+ return NULL;
}
/* end of plugin_transport_http.c */
+++ /dev/null
-/*
- 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 sockaddr_in addr;
-};
-
-/**
- * Wrapper for IPv4 addresses.
- */
-struct IPv6HttpAddressWrapper
-{
- /**
- * Linked list next
- */
- struct IPv6HttpAddressWrapper *next;
-
- /**
- * Linked list previous
- */
- struct IPv6HttpAddressWrapper *prev;
-
- /**
- * IPv6 address.
- */
- struct sockaddr_in6 addr GNUNET_PACKED;
-};
-
-
-/**
- * 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;
-};
-
-
-/**
- * Encapsulation of all of the state of the plugin.
- */
-struct Plugin;
-
-
-
-/**
- * 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;
- char *ret;
-
- if (hostname == NULL)
- {
- ppc->asc (ppc->asc_cls, NULL);
- GNUNET_free (ppc);
- return;
- }
- GNUNET_asprintf (&ret, "%s://%s:%d", ppc->plugin->protocol, hostname,
- ppc->plugin->port);
- ppc->asc (ppc->asc_cls, ret);
- GNUNET_free (ret);
-}
-
-
-/**
- * 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;
- size_t sbs;
- uint16_t port = 0 ;
-
- if (addrlen == sizeof (struct sockaddr_in6))
- {
- sb = addr;
- sbs = sizeof (struct sockaddr_in6);
-
- port = ntohs (((struct sockaddr_in6 *)addr)->sin6_port);
- }
- else if (addrlen == sizeof (struct sockaddr_in))
- {
- sb = &addr;
- sbs = sizeof (struct sockaddr_in);
- port = ntohs (((struct sockaddr_in *)addr)->sin_port);
- }
- 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;
- 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 sockaddr_in))
- {
- while (w_tv4 != NULL)
- {
- if (0 == memcmp (&w_tv4->addr, addr, sizeof (struct sockaddr_in)))
- break;
- w_tv4 = w_tv4->next;
- }
- if (w_tv4 != NULL)
- return GNUNET_OK;
- else
- return GNUNET_SYSERR;
- }
- if (addrlen == sizeof (struct sockaddr_in6))
- {
- while (w_tv6 != NULL)
- {
- if (0 ==
- memcmp (&w_tv6->addr, addr,
- sizeof (struct sockaddr_in6)))
- 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_TRANSPORT_ATS_Information distance[2];
- struct GNUNET_TIME_Relative delay;
-
- distance[0].type = htonl (GNUNET_TRANSPORT_ATS_QUALITY_NET_DISTANCE);
- distance[0].value = htonl (1);
- distance[1].type = htonl (GNUNET_TRANSPORT_ATS_ARRAY_TERMINATOR);
- distance[1].value = htonl (0);
-
- delay = plugin->env->receive (plugin->env->cls, &s->target, message, (const struct GNUNET_TRANSPORT_ATS_Information*) &distance, 2, s, s->addr, s->addrlen);
- return delay;
-}
-
-/**
- * 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 sockaddr_in *a4;
- struct sockaddr_in6 *a6;
- char *address;
- static char rbuf[INET6_ADDRSTRLEN + 13];
- uint16_t port;
- int res = 0;
-
- if (addrlen == sizeof (struct sockaddr_in6))
- {
- a6 = (struct sockaddr_in6 *) addr;
- address = GNUNET_malloc (INET6_ADDRSTRLEN);
- inet_ntop (AF_INET6, &(a6->sin6_addr), address, INET6_ADDRSTRLEN);
- port = ntohs (a6->sin6_port);
- }
- else if (addrlen == sizeof (struct sockaddr_in))
- {
- a4 = (struct sockaddr_in *) addr;
- address = GNUNET_malloc (INET_ADDRSTRLEN);
- inet_ntop (AF_INET, &(a4->sin_addr), address, INET_ADDRSTRLEN);
- port = ntohs (a4->sin_port);
- }
- else
- {
- /* invalid address */
- 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 sockaddr_in6))
- res = GNUNET_snprintf (rbuf, sizeof (rbuf), "%s://[%s]:%u/", protocol, address, port);
- else if (addrlen == sizeof (struct sockaddr_in))
- 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 (struct Plugin *plugin, const struct GNUNET_PeerIdentity *target,
- struct Session * session,
- const void *addr, size_t addrlen, int force_address)
-{
- struct Session *s = NULL;
- struct Session *t = NULL;
- int e_peer;
- int e_addr;
-
- t = plugin->head;
- if (t == NULL)
- return NULL;
- while (t != NULL)
- {
-#if 0
- GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
- "Comparing peer `%s' address `%s' len %i session %X 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 %X \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)
- {
- if (0 == memcmp (addr, t->addr, addrlen))
- {
- e_addr = GNUNET_YES;
- }
- }
- if ((t == session))
- {
- if(t->addrlen == session->addrlen)
- {
- if (0 == memcmp (session->addr, t->addr, t->addrlen))
- {
- e_addr = GNUNET_YES;
- }
- }
- }
- }
-
- if ((e_peer == GNUNET_YES) && (force_address == GNUNET_NO))
- {
- s = t;
- break;
- }
- if ((e_peer == GNUNET_YES) && (force_address == GNUNET_YES) && (e_addr == GNUNET_YES))
- {
- s = t;
- break;
- }
- if ((e_peer == GNUNET_YES) && (force_address == GNUNET_SYSERR))
- {
- s = t;
- break;
- }
- if (s != NULL)
- break;
- t = t->next;
- }
-
-
- return s;
-}
-
-void
-delete_session (struct Session *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,
- GNUNET_TRANSPORT_TransmitContinuation cont, void *cont_cls)
-{
- struct Session *s = NULL;
-
- 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->transmit_cont = cont;
- s->transmit_cont_cls = cont_cls;
- s->next = NULL;
- s->next_receive = GNUNET_TIME_absolute_get_forever();
- return s;
-}
-
-void
-notify_session_end (void *cls,
- const struct GNUNET_PeerIdentity *
- peer, struct Session * s)
-{
- struct Plugin *plugin = cls;
-
- plugin->env->session_end (NULL, peer, s);
- GNUNET_CONTAINER_DLL_remove (plugin->head, plugin->tail, s);
- delete_session (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 target who should receive this message
- * @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 session which session must be used (or NULL for "any")
- * @param addr the address to use (can be NULL if the plugin
- * is "on its own" (i.e. re-use existing TCP connection))
- * @param addrlen length of the address in bytes
- * @param force_address GNUNET_YES if the plugin MUST use the given address,
- * GNUNET_NO means the plugin may use any other address and
- * GNUNET_SYSERR means that only reliable existing
- * bi-directional connections should be used (regardless
- * of address)
- * @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, const struct GNUNET_PeerIdentity *target,
- const char *msgbuf, size_t msgbuf_size, unsigned int priority,
- struct GNUNET_TIME_Relative to, struct Session *session,
- const void *addr, size_t addrlen, int force_address,
- GNUNET_TRANSPORT_TransmitContinuation cont, void *cont_cls)
-{
- struct Plugin *plugin = cls;
- struct HTTP_Message *msg;
- GNUNET_assert (plugin != NULL);
-
- int res = GNUNET_SYSERR;
-
-#if DEBUG_HTTP
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
- "Sending %u bytes to peer `%s' on address `%s' %X %i\n", msgbuf_size,
- GNUNET_i2s (target), ((addr != NULL) && (addrlen != 0)) ? http_plugin_address_to_string(plugin, addr, addrlen) : "<inbound>", session, force_address);
-#endif
-
- struct Session *s = NULL;
-
- /* look for existing connection */
- s = lookup_session (plugin, target, session, addr, addrlen, 1);
-#if DEBUG_HTTP
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
- "%s existing session: %s\n", (s!=NULL) ? "Found" : "NOT Found", ((s != NULL) && (s->inbound == GNUNET_YES)) ? "inbound" : "outbound");
-#endif
-
- /* create new outbound connection */
- if (s == NULL)
- {
- 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 (target));
- return res;
- }
-
-#if DEBUG_HTTP
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
- "Initiiating new connection to peer `%s'\n",
- GNUNET_i2s (target));
-#endif
- s = create_session (plugin, target, addr, addrlen, cont, cont_cls);
- GNUNET_CONTAINER_DLL_insert (plugin->head, plugin->tail, s);
- // initiate new connection
- if (GNUNET_SYSERR == (res = client_connect (s)))
- {
- GNUNET_CONTAINER_DLL_remove (plugin->head, plugin->tail, s);
- delete_session (s);
- return GNUNET_SYSERR;
- }
- }
-
- 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);
-
- if (s->inbound == GNUNET_NO)
- {
-#if DEBUG_HTTP
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
- "Using outbound client session to send to `%s'\n",
- GNUNET_i2s (target));
-#endif
- client_send (s, msg);
- res = msgbuf_size;
- }
- if (s->inbound == GNUNET_YES)
- {
- server_send (s, msg);
- res = msgbuf_size;
-#if DEBUG_HTTP
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
- "Using inbound server session to send to `%s'\n",
- GNUNET_i2s (target));
-#endif
-
- }
- 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;
-
- 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);
- delete_session (s);
- }
- s = next;
- }
-}
-
-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 = plugin->ipv4_addr_head;
- while (w_t4 != NULL)
- {
- int res = memcmp (&w_t4->addr,
- (struct sockaddr_in *) addr,
- sizeof (struct sockaddr_in));
-
- if (0 == res)
- break;
- w_t4 = w_t4->next;
- }
- if (w_t4 == NULL)
- {
- w_t4 = GNUNET_malloc (sizeof (struct IPv4HttpAddressWrapper));
- memcpy (&w_t4->addr, (struct sockaddr_in *) addr,
- sizeof (struct sockaddr_in));
-
- GNUNET_CONTAINER_DLL_insert (plugin->ipv4_addr_head,
- plugin->ipv4_addr_tail, w_t4);
- }
-#if DEBUG_HTTP
- 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 sockaddr_in)));
-#endif
- plugin->env->notify_address (plugin->env->cls, add_remove, &w_t4->addr, sizeof (struct sockaddr_in));
-
- break;
- case AF_INET6:
- w_t6 = plugin->ipv6_addr_head;
- while (w_t6)
- {
- int res = memcmp (&w_t6->addr,
- (struct sockaddr_in6 *) addr,
- sizeof (struct sockaddr_in6));
-
- if (0 == res)
- break;
- w_t6 = w_t6->next;
- }
- if (w_t6 == NULL)
- {
- w_t6 = GNUNET_malloc (sizeof (struct IPv6HttpAddressWrapper));
- memcpy (&w_t6->addr, (struct sockaddr_in6 *) addr,
- sizeof (struct sockaddr_in6));
-
- GNUNET_CONTAINER_DLL_insert (plugin->ipv6_addr_head,
- plugin->ipv6_addr_tail, w_t6);
- }
-#if DEBUG_HTTP
- 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->addr, sizeof (struct sockaddr_in6)));
-#endif
- plugin->env->notify_address (plugin->env->cls, add_remove, &w_t6->addr, sizeof (struct sockaddr_in6));
- 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 = plugin->ipv4_addr_head;
- while (w_t4 != NULL)
- {
- int res = memcmp (&(w_t4->addr.sin_addr),
- &((struct sockaddr_in *) addr)->sin_addr,
- sizeof (struct in_addr));
-
- if (0 == res)
- break;
- w_t4 = w_t4->next;
- }
- if (w_t4 == NULL)
- return;
-
-#if DEBUG_HTTP
- 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 sockaddr_in)));
-#endif
- plugin->env->notify_address (plugin->env->cls, add_remove, &w_t4->addr,
- sizeof (struct sockaddr_in));
-
- GNUNET_CONTAINER_DLL_remove (plugin->ipv4_addr_head, plugin->ipv4_addr_tail,
- w_t4);
- GNUNET_free (w_t4);
- break;
- case AF_INET6:
- w_t6 = plugin->ipv6_addr_head;
- while (w_t6 != NULL)
- {
- int res = memcmp (&(w_t6->addr.sin6_addr),
- &((struct sockaddr_in6 *) addr)->sin6_addr,
- sizeof (struct in6_addr));
-
- if (0 == res)
- break;
- w_t6 = w_t6->next;
- }
- if (w_t6 == NULL)
- return;
-#if DEBUG_HTTP
- 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->addr, sizeof (struct sockaddr_in6)));
-#endif
- plugin->env->notify_address (plugin->env->cls, add_remove, &w_t6->addr,
- sizeof (struct sockaddr_in6 ));
-
- 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);
-#if DEBUG_HTTP
- struct Plugin *plugin = cls;
-#endif
- static int limit;
-#if DEBUG_HTTP
- 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));
-#endif
- /* convert 'addr' to our internal format */
- switch (add_remove)
- {
- case GNUNET_YES:
- // FIXME DEBUGGING
- if (limit < 1)
- nat_add_address (cls, add_remove, addr, addrlen);
- limit++;
- // FIXME END
- break;
- case GNUNET_NO:
- nat_remove_address (cls, add_remove, addr, addrlen);
- break;
- }
-}
-
-
-static void
-start_report_addresses (struct Plugin *plugin)
-{
- int res = GNUNET_OK;
- struct sockaddr **addrs;
- socklen_t *addrlens;
-
- res =
- GNUNET_SERVICE_get_server_addresses (plugin->name, plugin->env->cfg,
- &addrs, &addrlens);
-#if 0
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
- _("FOUND %u addresses\n"),res);
-#endif
-
- 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;
-
-
- 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;
-}
-
-/**
- * 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;
-
- plugin = GNUNET_malloc (sizeof (struct Plugin));
- plugin->env = env;
- api = GNUNET_malloc (sizeof (struct GNUNET_TRANSPORT_PluginFunctions));
- api->cls = plugin;
- api->send = &http_plugin_send;
- 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;
-
-#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;
- }
-
- /* 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 */
- 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);
-
-#if DEBUG_HTTP
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
- "Plugin `%s' loaded\n", plugin->name);
-#endif
-
- 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 = NULL;
-
- /* Stop reporting addresses to transport service */
- stop_report_addresses (plugin);
-
- /* cleaning up sessions */
- s = plugin->head;
- while (s != NULL)
- {
- struct Session *t = s->next;
-#if DEBUG_HTTP
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
- "Disconnecting `%s' \n", GNUNET_i2s (&s->target));
-#endif
- 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);
- delete_session (s);
- s = t;
- }
-
-#if DEBUG_HTTP
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
- "Stopping server\n");
-#endif
- /* Stop server */
- server_stop (plugin);
-
-#if DEBUG_HTTP
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
- "Stopping client\n");
-#endif
- /* Stop client */
- client_stop (plugin);
-
-
-#if DEBUG_HTTP
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
- "Plugin `%s' unloaded\n", plugin->name);
-#endif
-
- 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 */
projects / oweals / gnunet.git / commitdiff