/*
This file is part of GNUnet
- (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Christian Grothoff (and other contributing authors)
+ (C) 2002-2013 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
*/
#include "platform.h"
-#include "gnunet_protocols.h"
-#include "gnunet_connection_lib.h"
-#include "gnunet_server_lib.h"
-#include "gnunet_service_lib.h"
+#include "gnunet_util_lib.h"
#include "gnunet_statistics_service.h"
-#include "gnunet_transport_service.h"
#include "gnunet_transport_plugin.h"
+#include "gnunet_nat_lib.h"
+#include "plugin_transport_http_common.h"
+#include <microhttpd.h>
+
+
#if BUILD_HTTPS
+#define PLUGIN_NAME "https_server"
#define LIBGNUNET_PLUGIN_TRANSPORT_INIT libgnunet_plugin_transport_https_server_init
#define LIBGNUNET_PLUGIN_TRANSPORT_DONE libgnunet_plugin_transport_https_server_done
#else
+#define PLUGIN_NAME "http_server"
#define LIBGNUNET_PLUGIN_TRANSPORT_INIT libgnunet_plugin_transport_http_server_init
#define LIBGNUNET_PLUGIN_TRANSPORT_DONE libgnunet_plugin_transport_http_server_done
#endif
+#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>"
+#define _RECEIVE 0
+#define _SEND 1
-#define DEBUG_TEMPLATE GNUNET_EXTRA_LOGGING
-/**
- * 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)
+/* Enable output for debbuging URL's of incoming requests */
+#define DEBUG_URL_PARSE GNUNET_NO
/**
*/
struct Plugin;
-
/**
* Session handle for connections.
*/
struct Session
{
/**
- * To whom are we talking to (set to our identity
- * if we are still waiting for the welcome message)
+ * Stored in a linked list.
*/
- struct GNUNET_PeerIdentity sender;
+ struct Session *next;
/**
* Stored in a linked list.
*/
- struct Session *next;
+ struct Session *prev;
+
+ /**
+ * To whom are we talking to (set to our identity
+ * if we are still waiting for the welcome message)
+ */
+ struct GNUNET_PeerIdentity target;
/**
* Pointer to the global plugin struct.
*/
- struct Plugin *plugin;
+ struct HTTP_Server_Plugin *plugin;
/**
- * The client (used to identify this connection)
+ * next pointer for double linked list
*/
- /* void *client; */
+ struct HTTP_Message *msg_head;
/**
- * Continuation function to call once the transmission buffer
- * has again space available. NULL if there is no
- * continuation to call.
+ * previous pointer for double linked list
*/
- GNUNET_TRANSPORT_TransmitContinuation transmit_cont;
+ struct HTTP_Message *msg_tail;
/**
- * Closure for transmit_cont.
+ * Message stream tokenizer for incoming data
*/
- void *transmit_cont_cls;
+ struct GNUNET_SERVER_MessageStreamTokenizer *msg_tk;
+
+ /**
+ * Client send handle
+ */
+ struct ServerConnection *server_recv;
+
+ /**
+ * Client send handle
+ */
+ struct ServerConnection *server_send;
+
+ /**
+ * Address
+ */
+ void *addr;
+
+ /**
+ * Address length
+ */
+ size_t addrlen;
+
+ /**
+ * Unique HTTP/S connection tag for this connection
+ */
+ uint32_t tag;
+
+ /**
+ * ATS network type in NBO
+ */
+ uint32_t ats_address_network_type;
+
+ /**
+ * Was session given to transport service?
+ */
+ int session_passed;
+
+ /**
+ * Did we immediately end the session in disconnect_cb
+ */
+ int session_ended;
/**
- * At what time did we reset last_received last?
+ * Are incoming connection established at the moment
*/
- struct GNUNET_TIME_Absolute last_quota_update;
+ int connect_in_progress;
/**
- * How many bytes have we received since the "last_quota_update"
- * timestamp?
+ * Absolute time when to receive data again
+ * Used for receive throttling
*/
- uint64_t last_received;
+ struct GNUNET_TIME_Absolute next_receive;
/**
- * Number of bytes per ms that this peer is allowed
- * to send to us.
+ * Session timeout task
*/
- uint32_t quota;
+ GNUNET_SCHEDULER_TaskIdentifier timeout_task;
+};
+
+
+struct ServerConnection
+{
+ /* _RECV or _SEND */
+ int direction;
+
+ /* Should this connection get disconnected? GNUNET_YES/NO */
+ int disconnect;
+
+ /* For PUT connections: Is this the first or last callback with size 0 */
+ int connected;
+
+ /* The session this server connection belongs to */
+ struct Session *session;
+ /* The MHD connection */
+ struct MHD_Connection *mhd_conn;
+
+ /* The MHD daemon */
+ struct MHD_Daemon *mhd_daemon;
};
+
/**
* Encapsulation of all of the state of the plugin.
*/
-struct Plugin
+struct HTTP_Server_Plugin
{
/**
* Our environment.
struct GNUNET_TRANSPORT_PluginEnvironment *env;
/**
- * List of open sessions.
+ * Linked list head of open sessions.
+ */
+
+ struct Session *head;
+
+ /**
+ * Linked list tail of open sessions.
+ */
+ struct Session *tail;
+
+ /**
+ * Plugin name
+ */
+ char *name;
+
+ /**
+ * Protocol
+ */
+ char *protocol;
+
+ /**
+ * My options to be included in the address
+ */
+ uint32_t options;
+
+ /**
+ * External address
+ */
+ char *external_hostname;
+
+ /**
+ * Verify external address
+ */
+ int verify_external_hostname;
+
+
+ /**
+ * Maximum number of sockets the plugin can use
+ * Each http inbound /outbound connections are two connections
+ */
+ unsigned int max_connections;
+
+ /**
+ * Current number of sockets the plugin can use
+ * Each http inbound /outbound connections are two connections
+ */
+ unsigned int cur_connections;
+
+ /**
+ * Did we immediately end the session in disconnect_cb
+ */
+ int in_shutdown;
+
+ /**
+ * Length of peer id
+ */
+ int peer_id_length;
+
+ /**
+ * External hostname the plugin can be connected to, can be different to
+ * the host's FQDN, used e.g. for reverse proxying
+ */
+ struct HttpAddress *ext_addr;
+
+ /**
+ * Notify transport only about external address
+ */
+ unsigned int external_only;
+
+ /**
+ * External address length
+ */
+ size_t ext_addr_len;
+
+ /**
+ * use IPv6
+ */
+ uint16_t use_ipv6;
+
+ /**
+ * use IPv4
+ */
+ uint16_t use_ipv4;
+
+ /**
+ * Port used
+ */
+ uint16_t port;
+
+ /**
+ * Task calling transport service about external address
+ */
+ GNUNET_SCHEDULER_TaskIdentifier notify_ext_task;
+
+ /**
+ * NAT handle & address management
+ */
+ struct GNUNET_NAT_Handle *nat;
+
+ /**
+ * List of own addresses
+ */
+
+ /**
+ * IPv4 addresses DLL head
+ */
+ struct HttpAddressWrapper *addr_head;
+
+ /**
+ * IPv4 addresses DLL tail
+ */
+ struct HttpAddressWrapper *addr_tail;
+
+ /**
+ * IPv4 server socket to bind to
+ */
+ struct sockaddr_in *server_addr_v4;
+
+ /**
+ * IPv6 server socket to bind to
+ */
+ struct sockaddr_in6 *server_addr_v6;
+
+ /**
+ * MHD IPv4 task
*/
- struct Session *sessions;
+ GNUNET_SCHEDULER_TaskIdentifier server_v4_task;
+ /**
+ * MHD IPv6 task
+ */
+ GNUNET_SCHEDULER_TaskIdentifier server_v6_task;
+
+ /**
+ * The IPv4 server is scheduled to run asap
+ */
+ int server_v4_immediately;
+
+ /**
+ * The IPv6 server is scheduled to run asap
+ */
+ int server_v6_immediately;
+
+ /**
+ * MHD IPv4 daemon
+ */
+ struct MHD_Daemon *server_v4;
+
+ /**
+ * MHD IPv4 daemon
+ */
+ struct MHD_Daemon *server_v6;
+
+#if BUILD_HTTPS
+ /**
+ * Crypto related
+ *
+ * Example:
+ *
+ * Use RC4-128 instead of AES:
+ * NONE:+VERS-TLS1.0:+ARCFOUR-128:+SHA1:+RSA:+COMP-NULL
+ *
+ */
+ char *crypto_init;
+
+ /**
+ * TLS key
+ */
+ char *key;
+
+ /**
+ * TLS certificate
+ */
+ char *cert;
+#endif
+
+};
+
+
+/**
+ * Wrapper to manage addresses
+ */
+struct HttpAddressWrapper
+{
+ /**
+ * Linked list next
+ */
+ struct HttpAddressWrapper *next;
+
+ /**
+ * Linked list previous
+ */
+ struct HttpAddressWrapper *prev;
+
+ struct HttpAddress *address;
+
+ size_t addrlen;
+};
+
+
+/**
+ * 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;
+
+ /**
+ * HTTP/S specific overhead
+ */
+ size_t overhead;
+
+ /**
+ * 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;
};
+/**
+ * The http_server plugin handle
+ */
+static struct HTTP_Server_Plugin * p;
+
+
+/**
+ * Start session timeout for session s
+ * @param s the session
+ */
+static void
+server_start_session_timeout (struct Session *s);
+
+
+/**
+ * Increment session timeout due to activity for session s
+ * @param s the session
+ */
+static void
+server_reschedule_session_timeout (struct Session *s);
+
+
+/**
+ * Cancel timeout for session s
+ * @param s the session
+ */
+static void
+server_stop_session_timeout (struct Session *s);
+
+
+/**
+ * Disconnect a session s
+ * @param s the session
+ */
+static int
+server_disconnect (struct Session *s);
+
+
+/**
+ * Does session s exist?
+ *
+ * @param plugin the plugin handle
+ * @param s the session
+ * @return GNUNET_YES on success, GNUNET_NO on error
+ */
+static int
+server_exist_session (struct HTTP_Server_Plugin *plugin, struct Session *s);
+
+
+/**
+ * Reschedule the execution of both IPv4 and IPv6 server
+ * @param plugin the plugin
+ * @param server which server to schedule v4 or v6?
+ * @param now GNUNET_YES to schedule execution immediately, GNUNET_NO to wait
+ * until timeout
+ */
+static void
+server_reschedule (struct HTTP_Server_Plugin *plugin, struct MHD_Daemon *server,
+ int now);
+
+
/**
* Function that can be used by the transport service to transmit
* a message using the plugin. Note that in the case of a
struct GNUNET_TIME_Relative to,
GNUNET_TRANSPORT_TransmitContinuation cont, void *cont_cls)
{
- struct Plugin *plugin = cls;
+ struct HTTP_Server_Plugin *plugin = cls;
+ struct HTTP_Message *msg;
int bytes_sent = 0;
+ char *stat_txt;
GNUNET_assert (plugin != NULL);
GNUNET_assert (session != NULL);
- /* struct Plugin *plugin = cls; */
+ if (GNUNET_NO == server_exist_session (plugin, session))
+ {
+ GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+ if (NULL == session->server_send)
+ {
+ if (GNUNET_NO == session->connect_in_progress)
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, session->plugin->name,
+ "Session %p/connection %p: Sending message with %u bytes to peer `%s' with FAILED\n",
+ session, session->server_send,
+ msgbuf_size, GNUNET_i2s (&session->target));
+ GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+ }
+ else
+ {
+ if (GNUNET_YES == session->server_send->disconnect)
+ return GNUNET_SYSERR;
+ }
+
+
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, session->plugin->name,
+ "Session %p/connection %p: Sending message with %u to peer `%s' with \n",
+ session, session->server_send,
+ msgbuf_size, GNUNET_i2s (&session->target));
+
+ /* create new message and schedule */
+ bytes_sent = sizeof (struct HTTP_Message) + msgbuf_size;
+ msg = GNUNET_malloc (bytes_sent);
+ 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_tail (session->msg_head, session->msg_tail, msg);
+
+ GNUNET_asprintf (&stat_txt, "# bytes currently in %s_server buffers", plugin->protocol);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ stat_txt, msgbuf_size, GNUNET_NO);
+ GNUNET_free (stat_txt);
+
+ if (NULL != session->server_send)
+ {
+ server_reschedule (session->plugin,
+ session->server_send->mhd_daemon,
+ GNUNET_YES);
+ server_reschedule_session_timeout (session);
+ }
return bytes_sent;
}
static void
http_server_plugin_disconnect (void *cls, const struct GNUNET_PeerIdentity *target)
{
- // struct Plugin *plugin = cls;
- // FIXME
-}
+ struct HTTP_Server_Plugin *plugin = cls;
+ struct Session *next = NULL;
+ struct Session *pos = NULL;
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "Transport tells me to disconnect `%s'\n",
+ GNUNET_i2s (target));
-/**
- * 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_server_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)
-{
- asc (asc_cls, NULL);
-}
+ next = plugin->head;
+ while (NULL != (pos = next))
+ {
+ next = pos->next;
+ if (0 == memcmp (target, &pos->target, sizeof (struct GNUNET_PeerIdentity)))
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "Disconnecting session %p to `%s'\n",
+ pos, GNUNET_i2s (target));
+ server_disconnect (pos);
+ }
+ }
+}
/**
* and transport
*/
static int
-http_server_plugin_address_suggested (void *cls, const void *addr, size_t addrlen)
+http_server_plugin_address_suggested (void *cls, const void *addr,
+ size_t addrlen)
{
- /* struct Plugin *plugin = cls; */
+ struct HttpAddressWrapper *next;
+ struct HttpAddressWrapper *pos;
+ const struct HttpAddress *haddr = addr;
- /* check if the address is plausible; if so,
- * add it to our list! */
- return GNUNET_OK;
+ if ((NULL != p->ext_addr) &&
+ GNUNET_YES == (http_common_cmp_addresses (addr, addrlen,
+ p->ext_addr, p->ext_addr_len)))
+ {
+ /* Checking HTTP_OPTIONS_VERIFY_CERTIFICATE option for external hostname */
+ if ((ntohl(haddr->options) & HTTP_OPTIONS_VERIFY_CERTIFICATE) !=
+ (p->options & HTTP_OPTIONS_VERIFY_CERTIFICATE))
+ return GNUNET_NO; /* VERIFY option not set as required! */
+ return GNUNET_OK;
+ }
+
+ next = p->addr_head;
+ while (NULL != (pos = next))
+ {
+ next = pos->next;
+ if (GNUNET_YES == (http_common_cmp_addresses(addr,
+ addrlen,
+ pos->address,
+ pos->addrlen)))
+ return GNUNET_OK;
+
+ }
+ return GNUNET_NO;
}
/**
- * 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.
+ * Creates a new outbound session the transport
+ * service will use to send data to the peer
*
- * @param cls closure
- * @param addr binary address
- * @param addrlen length of the address
- * @return string representing the same address
+ * Since HTTP/S server cannot create sessions, always return NULL
+ *
+ * @param cls the plugin
+ * @param address the address
+ * @return always NULL
+ */
+static struct Session *
+http_server_plugin_get_session (void *cls,
+ const struct GNUNET_HELLO_Address *address)
+{
+ return NULL;
+}
+
+
+/**
+ * Deleting the session
+ * Must not be used afterwards
+ *
+ * @param s the session to delete
+ */
+static void
+server_delete_session (struct Session *s)
+{
+ struct HTTP_Server_Plugin *plugin = s->plugin;
+ server_stop_session_timeout(s);
+
+ GNUNET_CONTAINER_DLL_remove (plugin->head, plugin->tail, s);
+ struct HTTP_Message *msg = s->msg_head;
+ struct HTTP_Message *tmp = NULL;
+
+ while (msg != NULL)
+ {
+ tmp = msg->next;
+
+ GNUNET_CONTAINER_DLL_remove (s->msg_head, s->msg_tail, msg);
+ if (msg->transmit_cont != NULL)
+ {
+ msg->transmit_cont (msg->transmit_cont_cls, &s->target, GNUNET_SYSERR,
+ msg->size, msg->pos + msg->overhead);
+ }
+ GNUNET_free (msg);
+ msg = tmp;
+ }
+
+ 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_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "Session %p destroyed\n", s);
+ GNUNET_free (s);
+}
+
+
+/**
+* Cancel timeout for session s
+*
+* @param s the session
+*/
+static void
+server_stop_session_timeout (struct Session *s)
+{
+ GNUNET_assert (NULL != s);
+
+ if (GNUNET_SCHEDULER_NO_TASK != s->timeout_task)
+ {
+ GNUNET_SCHEDULER_cancel (s->timeout_task);
+ s->timeout_task = GNUNET_SCHEDULER_NO_TASK;
+ GNUNET_log (TIMEOUT_LOG, "Timeout stopped for session %p\n", s);
+ }
+}
+
+
+/**
+ * Function that queries MHD's select sets and
+ * starts the task waiting for them.
+ * @param plugin plugin
+ * @param daemon_handle the MHD daemon handle
+ * @param now schedule immediately
+ * @return gnunet task identifier
+ */
+static GNUNET_SCHEDULER_TaskIdentifier
+server_schedule (struct HTTP_Server_Plugin *plugin,
+ struct MHD_Daemon *daemon_handle,
+ int now);
+
+
+/**
+ * Reschedule the execution of both IPv4 and IPv6 server
+ * @param plugin the plugin
+ * @param server which server to schedule v4 or v6?
+ * @param now GNUNET_YES to schedule execution immediately, GNUNET_NO to wait
+ * until timeout
+ */
+static void
+server_reschedule (struct HTTP_Server_Plugin *plugin, struct MHD_Daemon *server,
+ int now)
+{
+ if ((server == plugin->server_v4) && (plugin->server_v4 != NULL))
+ {
+ if (GNUNET_YES == plugin->server_v4_immediately)
+ return; /* No rescheduling, server will run asap */
+
+ if (GNUNET_YES == now)
+ plugin->server_v4_immediately = GNUNET_YES;
+
+ if (plugin->server_v4_task != GNUNET_SCHEDULER_NO_TASK)
+ {
+ GNUNET_SCHEDULER_cancel (plugin->server_v4_task);
+ plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
+ }
+ plugin->server_v4_task = server_schedule (plugin, plugin->server_v4, now);
+ }
+
+ if ((server == plugin->server_v6) && (plugin->server_v6 != NULL))
+ {
+ if (GNUNET_YES == plugin->server_v6_immediately)
+ return; /* No rescheduling, server will run asap */
+
+ if (GNUNET_YES == now)
+ plugin->server_v6_immediately = GNUNET_YES;
+
+ if (plugin->server_v6_task != GNUNET_SCHEDULER_NO_TASK)
+ {
+ GNUNET_SCHEDULER_cancel (plugin->server_v6_task);
+ plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
+ }
+ plugin->server_v6_task = server_schedule (plugin, plugin->server_v6, now);
+ }
+}
+
+
+/**
+ * Disconnect session s
+ *
+ * @param s the session
+ * @return GNUNET_OK on success
+ */
+static int
+server_disconnect (struct Session *s)
+{
+ struct ServerConnection * send = NULL;
+ struct ServerConnection * recv = NULL;
+
+ if (GNUNET_NO == server_exist_session (p, s))
+ {
+ GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+
+ send = (struct ServerConnection *) s->server_send;
+ if (s->server_send != NULL)
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, s->plugin->name,
+ "Server: %p / %p Terminating inbound PUT session to peer `%s'\n",
+ s, s->server_send, GNUNET_i2s (&s->target));
+
+ send->disconnect = GNUNET_YES;
+#if MHD_VERSION >= 0x00090E00
+ MHD_set_connection_option (send->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
+ 1);
+#endif
+ server_reschedule (s->plugin, send->mhd_daemon, GNUNET_YES);
+ }
+
+ recv = (struct ServerConnection *) s->server_recv;
+ if (recv != NULL)
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, s->plugin->name,
+ "Server: %p / %p Terminating inbound GET session to peer `%s'\n",
+ s, s->server_recv, GNUNET_i2s (&s->target));
+
+ recv->disconnect = GNUNET_YES;
+#if MHD_VERSION >= 0x00090E00
+ MHD_set_connection_option (recv->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
+ 1);
+#endif
+ server_reschedule (s->plugin, recv->mhd_daemon, GNUNET_YES);
+ }
+ return GNUNET_OK;
+}
+
+
+
+/**
+ * Tell MHD that the connection should timeout after @a to seconds.
+ *
+ * @param plugin our plugin
+ * @param s session for which the timeout changes
+ * @param to timeout in seconds
+ */
+static void
+server_mhd_connection_timeout (struct HTTP_Server_Plugin *plugin,
+ struct Session *s,
+ unsigned int to)
+{
+#if MHD_VERSION >= 0x00090E00
+ /* Setting timeouts for other connections */
+ if (NULL != s->server_recv)
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "Setting timeout for %p to %u sec.\n",
+ s->server_recv, to);
+ MHD_set_connection_option (s->server_recv->mhd_conn,
+ MHD_CONNECTION_OPTION_TIMEOUT,
+ to);
+ server_reschedule (plugin, s->server_recv->mhd_daemon, GNUNET_NO);
+ }
+ if (NULL != s->server_send)
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "Setting timeout for %p to %u sec.\n",
+ s->server_send, to);
+ MHD_set_connection_option (s->server_send->mhd_conn,
+ MHD_CONNECTION_OPTION_TIMEOUT,
+ to);
+ server_reschedule (plugin, s->server_send->mhd_daemon, GNUNET_NO);
+ }
+#endif
+}
+
+/**
+ * Parse incoming URL for tag and target
+ *
+ * @param plugin plugin
+ * @param url incoming url
+ * @param target where to store the target
+ * @param tag where to store the tag
+ * @return GNUNET_OK on success, GNUNET_SYSERR on error
+ */
+
+static int
+server_parse_url (struct HTTP_Server_Plugin *plugin,
+ const char *url,
+ struct GNUNET_PeerIdentity *target,
+ uint32_t *tag)
+{
+ char * tag_start = NULL;
+ char * tag_end = NULL;
+ char * target_start = NULL;
+ char * separator = NULL;
+ unsigned int hash_length;
+ unsigned long int ctag;
+
+ /* URL parsing
+ * URL is valid if it is in the form [prefix with (multiple) '/'][peerid[103];tag]*/
+
+ if (NULL == url)
+ {
+ GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+ /* convert tag */
+
+ /* find separator */
+ separator = strrchr (url, ';');
+
+ if (NULL == separator)
+ {
+ if (DEBUG_URL_PARSE) GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+ tag_start = separator + 1;
+
+ if (strlen (tag_start) == 0)
+ {
+ /* No tag after separator */
+ if (DEBUG_URL_PARSE) GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+ ctag = strtoul (tag_start, &tag_end, 10);
+ if (ctag == 0)
+ {
+ /* tag == 0 , invalid */
+ if (DEBUG_URL_PARSE) GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+ if ((ctag == ULONG_MAX) && (ERANGE == errno))
+ {
+ /* out of range: > ULONG_MAX */
+ if (DEBUG_URL_PARSE) GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+ if (ctag > UINT32_MAX)
+ {
+ /* out of range: > UINT32_MAX */
+ if (DEBUG_URL_PARSE) GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+ (*tag) = (uint32_t) ctag;
+ if (NULL == tag_end)
+ {
+ /* no char after tag */
+ if (DEBUG_URL_PARSE) GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+ if (url[strlen(url)] != tag_end[0])
+ {
+ /* there are more not converted chars after tag */
+ if (DEBUG_URL_PARSE) GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+ if (DEBUG_URL_PARSE)
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "Found tag `%u' in url\n", (*tag));
+
+ /* convert peer id */
+ target_start = strrchr (url, '/');
+ if (NULL == target_start)
+ {
+ /* no leading '/' */
+ target_start = (char *) url;
+ }
+ target_start++;
+ hash_length = separator - target_start;
+ if (hash_length != plugin->peer_id_length)
+ {
+ /* no char after tag */
+ if (DEBUG_URL_PARSE) GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+ if (GNUNET_OK !=
+ GNUNET_CRYPTO_eddsa_public_key_from_string (target_start,
+ hash_length,
+ &target->public_key))
+ {
+ /* hash conversion failed */
+ if (DEBUG_URL_PARSE) GNUNET_break (0);
+ return GNUNET_SYSERR;
+ }
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG,
+ plugin->name,
+ "Found target `%s' in URL\n",
+ GNUNET_i2s_full (target));
+ return GNUNET_OK;
+}
+
+
+/**
+ * Lookup a mhd connection and create one if none is found
+ *
+ * @param plugin the plugin handle
+ * @param mhd_connection the incoming mhd_connection
+ * @param url incoming requested URL
+ * @param method PUT or GET
+ * @return the server connecetion
+ */
+static struct ServerConnection *
+server_lookup_connection (struct HTTP_Server_Plugin *plugin,
+ struct MHD_Connection *mhd_connection, const char *url,
+ const char *method)
+{
+ struct Session *s = NULL;
+ struct ServerConnection *sc = NULL;
+ const union MHD_ConnectionInfo *conn_info;
+ struct GNUNET_ATS_Information ats;
+ struct HttpAddress *addr;
+ size_t addr_len;
+ struct GNUNET_PeerIdentity target;
+ uint32_t tag = 0;
+ int direction = GNUNET_SYSERR;
+ unsigned int to;
+
+ conn_info = MHD_get_connection_info (mhd_connection,
+ MHD_CONNECTION_INFO_CLIENT_ADDRESS);
+ if ((conn_info->client_addr->sa_family != AF_INET) &&
+ (conn_info->client_addr->sa_family != AF_INET6))
+ return NULL;
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "New %s connection from %s\n", method, url);
+
+ if (GNUNET_SYSERR == server_parse_url (plugin, url, &target, &tag))
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "Invalid url %s\n", url);
+ return NULL;
+ }
+ if (0 == strcmp (MHD_HTTP_METHOD_PUT, method))
+ direction = _RECEIVE;
+ else if (0 == strcmp (MHD_HTTP_METHOD_GET, method))
+ direction = _SEND;
+ else
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "Invalid method %s connection from %s\n", method, url);
+ return NULL;
+ }
+
+ plugin->cur_connections++;
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "New %s connection from %s with tag %u (%u of %u)\n",
+ method,
+ GNUNET_i2s (&target), tag,
+ plugin->cur_connections, plugin->max_connections);
+ /* find duplicate session */
+ s = plugin->head;
+ while (s != NULL)
+ {
+ if ((0 == memcmp (&s->target, &target, sizeof (struct GNUNET_PeerIdentity))) &&
+ (s->tag == tag))
+ break;
+ s = s->next;
+ }
+ if (s != NULL)
+ {
+ if ((_RECEIVE == direction) && (NULL != s->server_recv))
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "Duplicate PUT connection from `%s' tag %u, dismissing new connection\n",
+ GNUNET_i2s (&target),
+ tag);
+ return NULL;
+
+ }
+ if ((_SEND == direction) && (NULL != s->server_send))
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "Duplicate GET connection from `%s' tag %u, dismissing new connection\n",
+ GNUNET_i2s (&target),
+ tag);
+ return NULL;
+ }
+ }
+ else
+ {
+ /* create new session */
+ switch (conn_info->client_addr->sa_family)
+ {
+ case (AF_INET):
+ addr = http_common_address_from_socket (plugin->protocol, conn_info->client_addr, sizeof (struct sockaddr_in));
+ addr_len = http_common_address_get_size (addr);
+ ats = plugin->env->get_address_type (plugin->env->cls, conn_info->client_addr, sizeof (struct sockaddr_in));
+ break;
+ case (AF_INET6):
+ addr = http_common_address_from_socket (plugin->protocol, conn_info->client_addr, sizeof (struct sockaddr_in6));
+ addr_len = http_common_address_get_size (addr);
+ ats = plugin->env->get_address_type (plugin->env->cls, conn_info->client_addr, sizeof (struct sockaddr_in6));
+ break;
+ default:
+ /* external host name */
+ ats.type = htonl (GNUNET_ATS_NETWORK_TYPE);
+ ats.type = htonl (GNUNET_ATS_NET_WAN);
+ return NULL;
+ }
+
+ s = GNUNET_malloc (sizeof (struct Session));
+ memcpy (&s->target, &target, sizeof (struct GNUNET_PeerIdentity));
+ s->plugin = plugin;
+ s->addr = addr;
+ s->addrlen = addr_len;
+ s->ats_address_network_type = ats.value;
+ s->next_receive = GNUNET_TIME_UNIT_ZERO_ABS;
+ s->tag = tag;
+ s->server_recv = NULL;
+ s->server_send = NULL;
+ s->session_passed = GNUNET_NO;
+ s->session_ended = GNUNET_NO;
+ s->connect_in_progress = GNUNET_YES;
+ server_start_session_timeout(s);
+ GNUNET_CONTAINER_DLL_insert (plugin->head, plugin->tail, s);
+
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "Creating new session %p for peer `%s' connecting from `%s'\n",
+ s, GNUNET_i2s (&target),
+ http_common_plugin_address_to_string (NULL, p->protocol, addr, addr_len));
+ }
+ sc = GNUNET_malloc (sizeof (struct ServerConnection));
+ if (conn_info->client_addr->sa_family == AF_INET)
+ sc->mhd_daemon = plugin->server_v4;
+ if (conn_info->client_addr->sa_family == AF_INET6)
+ sc->mhd_daemon = plugin->server_v6;
+ sc->mhd_conn = mhd_connection;
+ sc->direction = direction;
+ sc->connected = GNUNET_NO;
+ sc->session = s;
+ if (direction == _SEND)
+ s->server_send = sc;
+ if (direction == _RECEIVE)
+ s->server_recv = sc;
+
+ if ((NULL != s->server_send) && (NULL != s->server_recv))
+ {
+ s->connect_in_progress = GNUNET_NO; /* PUT and GET are connected */
+ plugin->env->session_start (NULL, &s->target, PLUGIN_NAME, NULL, 0 ,s, NULL, 0);
+ }
+
+ if ((NULL == s->server_recv) || (NULL == s->server_send))
+ {
+ to = (HTTP_SERVER_NOT_VALIDATED_TIMEOUT.rel_value_us / 1000LL / 1000LL);
+ MHD_set_connection_option (mhd_connection,
+ MHD_CONNECTION_OPTION_TIMEOUT, to);
+ server_reschedule (plugin, sc->mhd_daemon, GNUNET_NO);
+ }
+ else
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "Session %p for peer `%s' fully connected\n",
+ s, GNUNET_i2s (&target));
+ to = (HTTP_SERVER_SESSION_TIMEOUT.rel_value_us / 1000LL / 1000LL);
+ server_mhd_connection_timeout (plugin, s, to);
+ }
+
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "Setting timeout for %p to %u sec.\n", sc, to);
+ return sc;
+}
+
+
+/**
+ * Lookup a session for a server connection
+ *
+ * @param plugin the plugin
+ * @param sc the server connection
+ * @return the session found or NULL
+ */
+static struct Session *
+server_lookup_session (struct HTTP_Server_Plugin *plugin,
+ struct ServerConnection * sc)
+{
+ struct Session *s;
+
+ for (s = plugin->head; NULL != s; s = s->next)
+ if ((s->server_recv == sc) || (s->server_send == sc))
+ return s;
+ return NULL;
+}
+
+int
+server_exist_session (struct HTTP_Server_Plugin *plugin, struct Session *s)
+{
+ struct Session * head;
+
+ GNUNET_assert (NULL != plugin);
+ GNUNET_assert (NULL != s);
+
+ for (head = plugin->head; head != NULL; head = head->next)
+ {
+ if (head == s)
+ return GNUNET_YES;
+ }
+ return GNUNET_NO;
+}
+
+
+/**
+ * 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
+server_send_callback (void *cls, uint64_t pos, char *buf, size_t max)
+{
+ struct Session *s = cls;
+ ssize_t bytes_read = 0;
+ struct HTTP_Message *msg;
+ char *stat_txt;
+
+ GNUNET_assert (NULL != p);
+ if (GNUNET_NO == server_exist_session (p, s))
+ return 0;
+ msg = s->msg_head;
+ if (NULL != msg)
+ {
+ /* sending */
+ bytes_read = GNUNET_MIN (msg->size - msg->pos,
+ max);
+ memcpy (buf, &msg->buf[msg->pos], bytes_read);
+ msg->pos += bytes_read;
+
+ /* removing message */
+ if (msg->pos == msg->size)
+ {
+ GNUNET_CONTAINER_DLL_remove (s->msg_head, s->msg_tail, msg);
+ if (NULL != msg->transmit_cont)
+ msg->transmit_cont (msg->transmit_cont_cls, &s->target, GNUNET_OK,
+ msg->size, msg->size + msg->overhead);
+ GNUNET_free (msg);
+ }
+ }
+ if (0 < bytes_read)
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, s->plugin->name,
+ "Sent %u bytes to peer `%s' with session %p \n", bytes_read, GNUNET_i2s (&s->target), s);
+ GNUNET_asprintf (&stat_txt, "# bytes currently in %s_server buffers", p->protocol);
+ GNUNET_STATISTICS_update (p->env->stats,
+ stat_txt, -bytes_read, GNUNET_NO);
+ GNUNET_free (stat_txt);
+ GNUNET_asprintf (&stat_txt, "# bytes transmitted via %s_server", p->protocol);
+ GNUNET_STATISTICS_update (p->env->stats,
+ stat_txt, bytes_read, GNUNET_NO);
+ GNUNET_free (stat_txt);
+ }
+ return bytes_read;
+}
+
+
+/**
+ * Callback called by MessageStreamTokenizer when a message has arrived
+ *
+ * @param cls current session as closure
+ * @param client client
+ * @param message the message to be forwarded to transport service
+ * @return GNUNET_OK
+ */
+static int
+server_receive_mst_cb (void *cls, void *client,
+ const struct GNUNET_MessageHeader *message)
+{
+ struct Session *s = cls;
+ struct HTTP_Server_Plugin *plugin = s->plugin;
+ struct GNUNET_ATS_Information atsi;
+ struct GNUNET_TIME_Relative delay;
+ char *stat_txt;
+
+ GNUNET_assert (NULL != p);
+ if (GNUNET_NO == server_exist_session(p, s))
+ return GNUNET_OK;
+
+
+ atsi.type = htonl (GNUNET_ATS_NETWORK_TYPE);
+ atsi.value = s->ats_address_network_type;
+ GNUNET_break (s->ats_address_network_type != ntohl (GNUNET_ATS_NET_UNSPECIFIED));
+
+
+ delay = plugin->env->receive (plugin->env->cls,
+ &s->target,
+ message,
+ s, NULL, 0);
+
+ plugin->env->update_address_metrics (plugin->env->cls,
+ &s->target,
+ NULL, 0, s, &atsi, 1);
+
+ GNUNET_asprintf (&stat_txt, "# bytes received via %s_server", plugin->protocol);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ stat_txt, ntohs (message->size), GNUNET_NO);
+ GNUNET_free (stat_txt);
+
+ s->session_passed = GNUNET_YES;
+ s->next_receive = GNUNET_TIME_absolute_add (GNUNET_TIME_absolute_get (), delay);
+ if (delay.rel_value_us > 0)
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "Peer `%s' address `%s' next read delayed for %s\n",
+ GNUNET_i2s (&s->target),
+ http_common_plugin_address_to_string (NULL, p->protocol, s->addr, s->addrlen),
+ GNUNET_STRINGS_relative_time_to_string (delay,
+ GNUNET_YES));
+ }
+ server_reschedule_session_timeout (s);
+ return GNUNET_OK;
+}
+
+
+/**
+ * MHD callback for a new incoming connection
+ *
+ * @param cls the plugin handle
+ * @param mhd_connection the mhd connection
+ * @param url the requested URL
+ * @param method GET or PUT
+ * @param version HTTP version
+ * @param upload_data upload data
+ * @param upload_data_size sizeof upload data
+ * @param httpSessionCache the session cache to remember the connection
+ * @return MHD_YES if connection is accepted, MHD_NO on reject
+ */
+static int
+server_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 HTTP_Server_Plugin *plugin = cls;
+ int res = MHD_YES;
+
+ struct ServerConnection *sc = *httpSessionCache;
+ struct Session *s;
+ struct MHD_Response *response;
+
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ _("Access from connection %p (%u of %u) for `%s' `%s' url `%s' with upload data size %u\n"),
+ sc,
+ plugin->cur_connections, plugin->max_connections,
+ method, version, url, (*upload_data_size));
+
+ GNUNET_assert (cls != NULL);
+ if (sc == NULL)
+ {
+ /* new connection */
+ sc = server_lookup_connection (plugin, mhd_connection, url, method);
+ if (sc != NULL)
+ {
+ (*httpSessionCache) = sc;
+ }
+ else
+ {
+ response = MHD_create_response_from_data (strlen (HTTP_ERROR_RESPONSE), HTTP_ERROR_RESPONSE, MHD_NO, MHD_NO);
+ MHD_add_response_header (response,
+ MHD_HTTP_HEADER_CONTENT_TYPE,
+ "text/html");
+ res = MHD_queue_response (mhd_connection, MHD_HTTP_NOT_FOUND, response);
+ MHD_destroy_response (response);
+ return res;
+ }
+ }
+ else
+ {
+ /* 'old' connection */
+ if (NULL == server_lookup_session (plugin, sc))
+ {
+ /* Session was already disconnected */
+ return MHD_NO;
+ }
+ }
+
+ /* existing connection */
+ sc = (*httpSessionCache);
+ s = sc->session;
+ GNUNET_assert (NULL != s);
+ /* connection is to be disconnected */
+ if (sc->disconnect == GNUNET_YES)
+ {
+ /* Sent HTTP/1.1: 200 OK as response */
+ response = MHD_create_response_from_data (strlen ("Thank you!"),
+ "Thank you!",
+ MHD_NO, MHD_NO);
+ MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
+ MHD_destroy_response (response);
+ return MHD_YES;
+ }
+ GNUNET_assert (s != NULL);
+
+ if (sc->direction == _SEND)
+ {
+ response = MHD_create_response_from_callback (MHD_SIZE_UNKNOWN,
+ 32 * 1024,
+ &server_send_callback, s,
+ NULL);
+ MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
+ MHD_destroy_response (response);
+ return MHD_YES;
+ }
+ if (sc->direction == _RECEIVE)
+ {
+ if ((*upload_data_size == 0) && (sc->connected == GNUNET_NO))
+ {
+ /* (*upload_data_size == 0) first callback when header are passed */
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "Session %p / Connection %p: Peer `%s' PUT on address `%s' connected\n",
+ s, sc,
+ GNUNET_i2s (&s->target),
+ http_common_plugin_address_to_string (NULL,
+ p->protocol,
+ s->addr,
+ s->addrlen));
+ sc->connected = GNUNET_YES;
+ return MHD_YES;
+ }
+ else if ((*upload_data_size == 0) && (sc->connected == GNUNET_YES))
+ {
+ /* (*upload_data_size == 0) when upload is complete */
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "Session %p / Connection %p: Peer `%s' PUT on address `%s' finished upload\n",
+ s, sc,
+ GNUNET_i2s (&s->target),
+ http_common_plugin_address_to_string (NULL,
+ p->protocol,
+ s->addr,
+ s->addrlen));
+ sc->connected = GNUNET_NO;
+ /* Sent HTTP/1.1: 200 OK as PUT Response\ */
+ response = MHD_create_response_from_data (strlen ("Thank you!"),
+ "Thank you!",
+ MHD_NO, MHD_NO);
+ MHD_queue_response (mhd_connection, MHD_HTTP_OK, response);
+ MHD_destroy_response (response);
+ return MHD_YES;
+ }
+ else if ((*upload_data_size > 0) && (sc->connected == GNUNET_YES))
+ {
+ /* (*upload_data_size > 0) for every segment received */
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "Session %p / Connection %p: Peer `%s' PUT on address `%s' received %u bytes\n",
+ s, sc,
+ GNUNET_i2s (&s->target),
+ http_common_plugin_address_to_string (NULL,
+ p->protocol,
+ s->addr,
+ s->addrlen),
+ *upload_data_size);
+ struct GNUNET_TIME_Absolute now = GNUNET_TIME_absolute_get ();
+
+ if ((s->next_receive.abs_value_us <= now.abs_value_us))
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "PUT with %u bytes forwarded to MST\n",
+ *upload_data_size);
+ if (s->msg_tk == NULL)
+ {
+ s->msg_tk = GNUNET_SERVER_mst_create (&server_receive_mst_cb, s);
+ }
+ GNUNET_SERVER_mst_receive (s->msg_tk, s, upload_data,
+ *upload_data_size, GNUNET_NO, GNUNET_NO);
+ server_mhd_connection_timeout (plugin, s,
+ GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT.rel_value_us / 1000LL / 1000LL);
+ (*upload_data_size) = 0;
+ }
+ else
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Session %p / Connection %p: no inbound bandwidth available! Next read was delayed by %s\n",
+ s, sc,
+ GNUNET_STRINGS_relative_time_to_string (GNUNET_TIME_absolute_get_duration (s->next_receive),
+ GNUNET_YES));
+ }
+ return MHD_YES;
+ }
+ else
+ {
+ GNUNET_break (0);
+ return MHD_NO;
+ }
+ }
+ return res;
+}
+
+
+/**
+ * Callback from MHD when a connection disconnects
+ *
+ * @param cls closure
+ * @param connection the disconnected MHD connection
+ * @param httpSessionCache the pointer to distinguish
+ */
+static void
+server_disconnect_cb (void *cls, struct MHD_Connection *connection,
+ void **httpSessionCache)
+{
+ struct ServerConnection *sc = *httpSessionCache;
+ struct Session *s = NULL;
+ struct Session *t = NULL;
+ struct HTTP_Server_Plugin *plugin = NULL;
+
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, p->name,
+ "Disconnect for connection %p \n", sc);
+
+ if (sc == NULL)
+ return;
+
+ if (NULL == (s = server_lookup_session (p, sc)))
+ return;
+
+ GNUNET_assert (NULL != p);
+ for (t = p->head; t != NULL; t = t->next)
+ {
+ if (t == s)
+ break;
+ }
+ if (NULL == t)
+ return;
+
+ plugin = s->plugin;
+ if (sc->direction == _SEND)
+ {
+
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "Peer `%s' connection %p, GET on address `%s' disconnected\n",
+ GNUNET_i2s (&s->target), s->server_send,
+ http_common_plugin_address_to_string (NULL, p->protocol, s->addr, s->addrlen));
+ s->server_send = NULL;
+ if (NULL != (s->server_recv))
+ {
+ s->server_recv->disconnect = GNUNET_YES;
+ GNUNET_assert (NULL != s->server_recv->mhd_conn);
+#if MHD_VERSION >= 0x00090E00
+ MHD_set_connection_option (s->server_recv->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
+ 1);
+#endif
+ server_reschedule (plugin, s->server_recv->mhd_daemon, GNUNET_NO);
+ }
+ }
+ if (sc->direction == _RECEIVE)
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "Peer `%s' connection %p PUT on address `%s' disconnected\n",
+ GNUNET_i2s (&s->target), s->server_recv,
+ http_common_plugin_address_to_string (NULL, p->protocol, s->addr, s->addrlen));
+ s->server_recv = NULL;
+ /* Do not terminate session when PUT disconnects
+ if (NULL != (s->server_send))
+ {
+ s->server_send->disconnect = GNUNET_YES;
+ GNUNET_assert (NULL != s->server_send->mhd_conn);
+#if MHD_VERSION >= 0x00090E00
+ MHD_set_connection_option (s->server_send->mhd_conn, MHD_CONNECTION_OPTION_TIMEOUT,
+ 1);
+#endif
+ server_reschedule (plugin, s->server_send->mhd_daemon, GNUNET_NO);
+ }*/
+ if (s->msg_tk != NULL)
+ {
+ GNUNET_SERVER_mst_destroy (s->msg_tk);
+ s->msg_tk = NULL;
+ }
+ }
+
+ GNUNET_free (sc);
+ plugin->cur_connections--;
+
+ if ((s->server_send == NULL) && (s->server_recv == NULL))
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "Peer `%s' on address `%s' disconnected\n",
+ GNUNET_i2s (&s->target),
+ http_common_plugin_address_to_string (NULL, p->protocol, s->addr, s->addrlen));
+
+ if ((GNUNET_YES == s->session_passed) && (GNUNET_NO == s->session_ended))
+ {
+ /* Notify transport immediately that this session is invalid */
+ s->session_ended = GNUNET_YES;
+ plugin->env->session_end (plugin->env->cls, &s->target, s);
+ }
+ server_delete_session (s);
+ }
+
+}
+
+
+/**
+ * Check if incoming 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
+server_accept_cb (void *cls, const struct sockaddr *addr, socklen_t addr_len)
+{
+ struct HTTP_Server_Plugin *plugin = cls;
+
+ if (plugin->cur_connections <= plugin->max_connections)
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ _("Accepting connection (%u of %u) from `%s'\n"),
+ plugin->cur_connections, plugin->max_connections,
+ GNUNET_a2s (addr, addr_len));
+ return MHD_YES;
+ }
+ else
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, plugin->name,
+ _("Server reached maximum number connections (%u), rejecting new connection\n"),
+ plugin->max_connections);
+ return MHD_NO;
+ }
+}
+
+static void
+server_log (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_DEBUG, "Server: %s\n", text);
+}
+
+
+/**
+ * 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
+server_v4_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ struct HTTP_Server_Plugin *plugin = cls;
+
+ GNUNET_assert (cls != NULL);
+
+ plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
+ if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
+ return;
+#if 0
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "Running IPv4 server\n");
+#endif
+ plugin->server_v4_immediately = GNUNET_NO;
+ GNUNET_assert (MHD_YES == MHD_run (plugin->server_v4));
+ server_reschedule (plugin, plugin->server_v4, GNUNET_NO);
+}
+
+
+/**
+ * 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
+server_v6_run (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ struct HTTP_Server_Plugin *plugin = cls;
+
+ GNUNET_assert (cls != NULL);
+ plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
+ if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
+ return;
+#if 0
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "Running IPv6 server\n");
+#endif
+ plugin->server_v6_immediately = GNUNET_NO;
+ GNUNET_assert (MHD_YES == MHD_run (plugin->server_v6));
+ server_reschedule (plugin, plugin->server_v6, GNUNET_NO);
+}
+
+
+#define UNSIGNED_MHD_LONG_LONG unsigned MHD_LONG_LONG
+
+/**
+ * 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
+server_schedule (struct HTTP_Server_Plugin *plugin,
+ struct MHD_Daemon *daemon_handle,
+ int now)
+{
+ 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_MHD_LONG_LONG timeout;
+ static unsigned long long last_timeout = 0;
+ int haveto;
+
+ struct GNUNET_TIME_Relative tv;
+
+ if (GNUNET_YES == plugin->in_shutdown)
+ return GNUNET_SCHEDULER_NO_TASK;
+
+ 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)
+ {
+ if (timeout != last_timeout)
+ {
+
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "SELECT Timeout changed from %llu to %llu (ms)\n",
+ last_timeout, timeout);
+ last_timeout = timeout;
+ }
+ if (timeout <= GNUNET_TIME_UNIT_SECONDS.rel_value_us / 1000LL)
+ tv.rel_value_us = (uint64_t) timeout * 1000LL;
+ else
+ tv = GNUNET_TIME_UNIT_SECONDS;
+ }
+ else
+ tv = GNUNET_TIME_UNIT_SECONDS;
+ /* Force immediate run, since we have outbound data to send */
+ if (now == GNUNET_YES)
+ tv = GNUNET_TIME_UNIT_MILLISECONDS;
+ 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->server_v4)
+ {
+ if (plugin->server_v4_task != GNUNET_SCHEDULER_NO_TASK)
+ {
+ GNUNET_SCHEDULER_cancel (plugin->server_v4_task);
+ plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
+ }
+#if 0
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "Scheduling IPv4 server task in %llu ms\n", tv);
+#endif
+ ret =
+ GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
+ tv, wrs, wws,
+ &server_v4_run, plugin);
+ }
+ if (daemon_handle == plugin->server_v6)
+ {
+ if (plugin->server_v6_task != GNUNET_SCHEDULER_NO_TASK)
+ {
+ GNUNET_SCHEDULER_cancel (plugin->server_v6_task);
+ plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
+ }
+#if 0
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "Scheduling IPv6 server task in %llu ms\n", tv);
+#endif
+ ret =
+ GNUNET_SCHEDULER_add_select (GNUNET_SCHEDULER_PRIORITY_DEFAULT,
+ tv, wrs, wws,
+ &server_v6_run, plugin);
+ }
+ GNUNET_NETWORK_fdset_destroy (wrs);
+ GNUNET_NETWORK_fdset_destroy (wws);
+ GNUNET_NETWORK_fdset_destroy (wes);
+ return ret;
+}
+
+
+#if BUILD_HTTPS
+/**
+ * Load ssl certificate from file
+ *
+ * @param file filename
+ * @return content of the file
+ */
+static char *
+server_load_file (const char *file)
+{
+ struct GNUNET_DISK_FileHandle *gn_file;
+ uint64_t fsize;
+ char *text = NULL;
+
+ if (GNUNET_OK != GNUNET_DISK_file_size (file,
+ &fsize, GNUNET_NO, GNUNET_YES))
+ return NULL;
+ text = GNUNET_malloc (fsize + 1);
+ gn_file =
+ GNUNET_DISK_file_open (file, GNUNET_DISK_OPEN_READ,
+ GNUNET_DISK_PERM_USER_READ);
+ if (gn_file == NULL)
+ {
+ GNUNET_free (text);
+ return NULL;
+ }
+ if (GNUNET_SYSERR == GNUNET_DISK_file_read (gn_file, text, fsize))
+ {
+ GNUNET_free (text);
+ GNUNET_DISK_file_close (gn_file);
+ return NULL;
+ }
+ text[fsize] = '\0';
+ GNUNET_DISK_file_close (gn_file);
+ return text;
+}
+#endif
+
+
+#if BUILD_HTTPS
+/**
+ * Load ssl certificate
+ *
+ * @param plugin the plugin
+ * @return #GNUNET_OK on success, #GNUNET_SYSERR on failure
+ */
+static int
+server_load_certificate (struct HTTP_Server_Plugin *plugin)
+{
+ int res = GNUNET_OK;
+ char *key_file;
+ char *cert_file;
+
+
+ if (GNUNET_OK !=
+ GNUNET_CONFIGURATION_get_value_filename (plugin->env->cfg, plugin->name,
+ "KEY_FILE", &key_file))
+ {
+ GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
+ plugin->name, "CERT_FILE");
+ return GNUNET_SYSERR;
+ }
+ if (GNUNET_OK !=
+ GNUNET_CONFIGURATION_get_value_filename (plugin->env->cfg, plugin->name,
+ "CERT_FILE", &cert_file))
+ {
+ GNUNET_log_config_missing (GNUNET_ERROR_TYPE_ERROR,
+ plugin->name, "CERT_FILE");
+ GNUNET_free (key_file);
+ return GNUNET_SYSERR;
+ }
+ /* Get crypto init string from config. If not present, use
+ * default values */
+ if (GNUNET_OK ==
+ GNUNET_CONFIGURATION_get_value_string (plugin->env->cfg,
+ plugin->name,
+ "CRYPTO_INIT",
+ &plugin->crypto_init))
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "Using crypto init string `%s'\n",
+ plugin->crypto_init);
+ else
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "Using default crypto init string \n");
+
+ /* read key & certificates from file */
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "Trying to loading TLS certificate from key-file `%s' cert-file`%s'\n",
+ key_file, cert_file);
+
+ plugin->key = server_load_file (key_file);
+ plugin->cert = server_load_file (cert_file);
+
+ if ((plugin->key == NULL) || (plugin->cert == NULL))
+ {
+ struct GNUNET_OS_Process *cert_creation;
+
+ GNUNET_free_non_null (plugin->key);
+ plugin->key = NULL;
+ GNUNET_free_non_null (plugin->cert);
+ plugin->cert = NULL;
+
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ "No usable TLS certificate found, creating certificate\n");
+ errno = 0;
+ cert_creation =
+ GNUNET_OS_start_process (GNUNET_NO, GNUNET_OS_INHERIT_STD_OUT_AND_ERR, NULL, NULL,
+ "gnunet-transport-certificate-creation",
+ "gnunet-transport-certificate-creation",
+ key_file, cert_file, NULL);
+ if (cert_creation == NULL)
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
+ _
+ ("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_non_null (plugin->key);
+ plugin->key = NULL;
+ GNUNET_free_non_null (plugin->cert);
+ plugin->cert = NULL;
+ GNUNET_free_non_null (plugin->crypto_init);
+ plugin->crypto_init = NULL;
+
+ return GNUNET_SYSERR;
+ }
+ GNUNET_assert (GNUNET_OK == GNUNET_OS_process_wait (cert_creation));
+ GNUNET_OS_process_destroy (cert_creation);
+
+ plugin->key = server_load_file (key_file);
+ plugin->cert = server_load_file (cert_file);
+ }
+
+ if ((plugin->key == NULL) || (plugin->cert == NULL))
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR,
+ plugin->name,
+ _("No usable TLS certificate found and creating one at `%s/%s' failed!\n"),
+ key_file, cert_file);
+ GNUNET_free (key_file);
+ GNUNET_free (cert_file);
+
+ GNUNET_free_non_null (plugin->key);
+ plugin->key = NULL;
+ GNUNET_free_non_null (plugin->cert);
+ plugin->cert = NULL;
+ GNUNET_free_non_null (plugin->crypto_init);
+ plugin->crypto_init = NULL;
+
+ return GNUNET_SYSERR;
+ }
+ GNUNET_free (key_file);
+ GNUNET_free (cert_file);
+ GNUNET_log (GNUNET_ERROR_TYPE_DEBUG, "TLS certificate loaded\n");
+ return res;
+}
+#endif
+
+
+/**
+ * Start the HTTP server
+ *
+ * @param plugin the plugin handle
+ * @return GNUNET_OK on success, GNUNET_SYSERR on failure
+ */
+static int
+server_start (struct HTTP_Server_Plugin *plugin)
+{
+ unsigned int timeout;
+ char *msg;
+ GNUNET_assert (NULL != plugin);
+
+#if BUILD_HTTPS
+ if (GNUNET_SYSERR == server_load_certificate (plugin))
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
+ "Could not load or create server certificate! Loading plugin failed!\n");
+ return GNUNET_SYSERR;
+ }
+#endif
+
+
+#if MHD_VERSION >= 0x00090E00
+ timeout = HTTP_SERVER_NOT_VALIDATED_TIMEOUT.rel_value_us / 1000LL / 1000LL;
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "MHD can set timeout per connection! Default time out %u sec.\n",
+ timeout);
+#else
+ timeout = HTTP_SERVER_SESSION_TIMEOUT.rel_value_us / 1000LL / 1000LL;
+ GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, plugin->name,
+ "MHD cannot set timeout per connection! Default time out %u sec.\n",
+ timeout);
+#endif
+
+ plugin->server_v4 = NULL;
+ if (plugin->use_ipv4 == GNUNET_YES)
+ {
+ plugin->server_v4 = MHD_start_daemon (
+#if VERBOSE_SERVER
+ MHD_USE_DEBUG |
+#endif
+#if BUILD_HTTPS
+ MHD_USE_SSL |
+#endif
+ MHD_NO_FLAG, plugin->port,
+ &server_accept_cb, plugin,
+ &server_access_cb, plugin,
+ MHD_OPTION_SOCK_ADDR,
+ (struct sockaddr_in *)
+ plugin->server_addr_v4,
+ MHD_OPTION_CONNECTION_LIMIT,
+ (unsigned int)
+ plugin->max_connections,
+#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,
+ timeout,
+ MHD_OPTION_CONNECTION_MEMORY_LIMIT,
+ (size_t) (2 *
+ GNUNET_SERVER_MAX_MESSAGE_SIZE),
+ MHD_OPTION_NOTIFY_COMPLETED,
+ &server_disconnect_cb, plugin,
+ MHD_OPTION_EXTERNAL_LOGGER,
+ server_log, NULL, MHD_OPTION_END);
+ if (plugin->server_v4 == NULL)
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
+ "Failed to start %s IPv4 server component on port %u\n",
+ plugin->name, plugin->port);
+ }
+ else
+ server_reschedule (plugin, plugin->server_v4, GNUNET_NO);
+ }
+
+
+ plugin->server_v6 = NULL;
+ if (plugin->use_ipv6 == GNUNET_YES)
+ {
+ plugin->server_v6 = MHD_start_daemon (
+#if VERBOSE_SERVER
+ MHD_USE_DEBUG |
+#endif
+#if BUILD_HTTPS
+ MHD_USE_SSL |
+#endif
+ MHD_USE_IPv6, plugin->port,
+ &server_accept_cb, plugin,
+ &server_access_cb, plugin,
+ MHD_OPTION_SOCK_ADDR,
+ (struct sockaddr_in6 *)
+ plugin->server_addr_v6,
+ MHD_OPTION_CONNECTION_LIMIT,
+ (unsigned int)
+ plugin->max_connections,
+#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,
+ timeout,
+ MHD_OPTION_CONNECTION_MEMORY_LIMIT,
+ (size_t) (2 *
+ GNUNET_SERVER_MAX_MESSAGE_SIZE),
+ MHD_OPTION_NOTIFY_COMPLETED,
+ &server_disconnect_cb, plugin,
+ MHD_OPTION_EXTERNAL_LOGGER,
+ server_log, NULL, MHD_OPTION_END);
+ if (plugin->server_v6 == NULL)
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
+ "Failed to start %s IPv6 server component on port %u\n",
+ plugin->name, plugin->port);
+ }
+ else
+ server_reschedule (plugin, plugin->server_v6, GNUNET_NO);
+ }
+
+ msg = "No";
+ if ((plugin->server_v6 == NULL) && (plugin->server_v4 == NULL))
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
+ "%s %s server component started on port %u\n",
+ msg, plugin->name, plugin->port);
+ sleep (10);
+ return GNUNET_SYSERR;
+ }
+ else if ((plugin->server_v6 != NULL) && (plugin->server_v4 != NULL))
+ msg = "IPv4 and IPv6";
+ else if (plugin->server_v6 != NULL)
+ msg = "IPv6";
+ else if (plugin->server_v4 != NULL)
+ msg = "IPv4";
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "%s %s server component started on port %u\n",
+ msg, plugin->name, plugin->port);
+ return GNUNET_OK;
+}
+
+
+void
+server_stop (struct HTTP_Server_Plugin *plugin)
+{
+ if (plugin->server_v4 != NULL)
+ {
+ MHD_stop_daemon (plugin->server_v4);
+ plugin->server_v4 = NULL;
+ }
+ if ( plugin->server_v6 != NULL)
+ {
+ MHD_stop_daemon (plugin->server_v6);
+ plugin->server_v6 = NULL;
+ }
+
+
+ if (plugin->server_v4_task != GNUNET_SCHEDULER_NO_TASK)
+ {
+ GNUNET_SCHEDULER_cancel (plugin->server_v4_task);
+ plugin->server_v4_task = GNUNET_SCHEDULER_NO_TASK;
+ }
+
+ if (plugin->server_v6_task != GNUNET_SCHEDULER_NO_TASK)
+ {
+ GNUNET_SCHEDULER_cancel (plugin->server_v6_task);
+ plugin->server_v6_task = GNUNET_SCHEDULER_NO_TASK;
+ }
+ p = NULL;
+
+#if BUILD_HTTPS
+ GNUNET_free_non_null (plugin->crypto_init);
+ GNUNET_free_non_null (plugin->cert);
+ GNUNET_free_non_null (plugin->key);
+#endif
+
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "%s server component stopped\n", plugin->name);
+}
+
+
+/**
+ * Add an address to the server's set of addresses and notify transport
+ *
+ * @param cls the plugin handle
+ * @param add_remove GNUNET_YES on add, GNUNET_NO on remove
+ * @param addr the address
+ * @param addrlen address length
+ */
+static void
+server_add_address (void *cls, int add_remove, const struct sockaddr *addr,
+ socklen_t addrlen)
+{
+ struct HTTP_Server_Plugin *plugin = cls;
+ struct HttpAddressWrapper *w = NULL;
+
+ w = GNUNET_malloc (sizeof (struct HttpAddressWrapper));
+ w->address = http_common_address_from_socket (plugin->protocol, addr, addrlen);
+ if (NULL == w->address)
+ {
+ GNUNET_free (w);
+ return;
+ }
+ w->addrlen = http_common_address_get_size (w->address);
+
+ GNUNET_CONTAINER_DLL_insert(plugin->addr_head, plugin->addr_tail, w);
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "Notifying transport to add address `%s'\n",
+ http_common_plugin_address_to_string (NULL, p->protocol, w->address, w->addrlen));
+#if BUILD_HTTPS
+ plugin->env->notify_address (plugin->env->cls, add_remove, w->address, w->addrlen, "https_client");
+#else
+ plugin->env->notify_address (plugin->env->cls, add_remove, w->address, w->addrlen, "http_client");
+#endif
+}
+
+
+/**
+ * Remove an address from the server's set of addresses and notify transport
+ *
+ * @param cls the plugin handle
+ * @param add_remove GNUNET_YES on add, GNUNET_NO on remove
+ * @param addr the address
+ * @param addrlen address length
+ */
+static void
+server_remove_address (void *cls, int add_remove, const struct sockaddr *addr,
+ socklen_t addrlen)
+{
+ struct HTTP_Server_Plugin *plugin = cls;
+ struct HttpAddressWrapper *w = plugin->addr_head;
+ size_t saddr_len;
+ void * saddr = http_common_address_from_socket (plugin->protocol, addr, addrlen);
+ if (NULL == saddr)
+ return;
+ saddr_len = http_common_address_get_size (saddr);
+
+ while (NULL != w)
+ {
+ if (GNUNET_YES == http_common_cmp_addresses(w->address, w->addrlen, saddr, saddr_len))
+ break;
+ w = w->next;
+ }
+ GNUNET_free (saddr);
+
+ if (NULL == w)
+ return;
+
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "Notifying transport to remove address `%s'\n",
+ http_common_plugin_address_to_string (NULL, p->protocol, w->address, w->addrlen));
+ GNUNET_CONTAINER_DLL_remove (plugin->addr_head, plugin->addr_tail, w);
+#if BUILD_HTTPS
+ plugin->env->notify_address (plugin->env->cls, add_remove, w->address, w->addrlen, "https_client");
+#else
+ plugin->env->notify_address (plugin->env->cls, add_remove, w->address, w->addrlen, "http_client");
+#endif
+ GNUNET_free (w->address);
+ GNUNET_free (w);
+}
+
+
+
+/**
+ * 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
+server_nat_port_map_callback (void *cls, int add_remove, const struct sockaddr *addr,
+ socklen_t addrlen)
+{
+ GNUNET_assert (cls != NULL);
+ struct HTTP_Server_Plugin *plugin = cls;
+
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "NAT called to %s address `%s'\n",
+ (add_remove == GNUNET_NO) ? "remove" : "add",
+ GNUNET_a2s (addr, addrlen));
+
+ if (AF_INET == addr->sa_family)
+ {
+ struct sockaddr_in *s4 = (struct sockaddr_in *) addr;
+
+ if (GNUNET_NO == plugin->use_ipv4)
+ return;
+
+ if ((NULL != plugin->server_addr_v4) &&
+ (0 != memcmp (&plugin->server_addr_v4->sin_addr,
+ &s4->sin_addr, sizeof (struct in_addr))))
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "Skipping address `%s' (not bindto address)\n",
+ GNUNET_a2s (addr, addrlen));
+ return;
+ }
+ }
+
+ if (AF_INET6 == addr->sa_family)
+ {
+ struct sockaddr_in6 *s6 = (struct sockaddr_in6 *) addr;
+ if (GNUNET_NO == plugin->use_ipv6)
+ return;
+
+ if ((NULL != plugin->server_addr_v6) &&
+ (0 != memcmp (&plugin->server_addr_v6->sin6_addr,
+ &s6->sin6_addr, sizeof (struct in6_addr))))
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "Skipping address `%s' (not bindto address)\n",
+ GNUNET_a2s (addr, addrlen));
+ return;
+ }
+ }
+
+ switch (add_remove)
+ {
+ case GNUNET_YES:
+ server_add_address (cls, add_remove, addr, addrlen);
+ break;
+ case GNUNET_NO:
+ server_remove_address (cls, add_remove, addr, addrlen);
+ break;
+ }
+}
+
+
+/**
+ * Get valid server addresses
+ *
+ * @param plugin the plugin handle
+ * @param service_name the servicename
+ * @param cfg configuration handle
+ * @param addrs addresses
+ * @param addr_lens address length
+ * @return number of addresses
+ */
+static int
+server_get_addresses (struct HTTP_Server_Plugin *plugin,
+ const char *service_name,
+ const struct GNUNET_CONFIGURATION_Handle *cfg,
+ struct sockaddr ***addrs, socklen_t ** addr_lens)
+{
+ int disablev6;
+ unsigned long long port;
+ struct addrinfo hints;
+ struct addrinfo *res;
+ struct addrinfo *pos;
+ struct addrinfo *next;
+ unsigned int i;
+ int resi;
+ int ret;
+ struct sockaddr **saddrs;
+ socklen_t *saddrlens;
+ char *hostname;
+
+ *addrs = NULL;
+ *addr_lens = NULL;
+
+ disablev6 = !plugin->use_ipv6;
+
+ port = 0;
+ if (GNUNET_CONFIGURATION_have_value (cfg, service_name, "PORT"))
+ {
+ GNUNET_break (GNUNET_OK ==
+ GNUNET_CONFIGURATION_get_value_number (cfg, service_name,
+ "PORT", &port));
+ if (port > 65535)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _
+ ("Require valid port number for service in configuration!\n"));
+ return GNUNET_SYSERR;
+ }
+ }
+ if (0 == port)
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, plugin->name,
+ "Starting in listen only mode\n");
+ return -1; /* listen only */
+ }
+
+
+ if (GNUNET_CONFIGURATION_have_value (cfg, service_name, "BINDTO"))
+ {
+ GNUNET_break (GNUNET_OK ==
+ GNUNET_CONFIGURATION_get_value_string (cfg, service_name,
+ "BINDTO", &hostname));
+ }
+ else
+ hostname = NULL;
+
+ if (hostname != NULL)
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "Resolving `%s' since that is where `%s' will bind to.\n",
+ hostname, service_name);
+ memset (&hints, 0, sizeof (struct addrinfo));
+ if (disablev6)
+ hints.ai_family = AF_INET;
+ if ((0 != (ret = getaddrinfo (hostname, NULL, &hints, &res))) ||
+ (res == NULL))
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR, _("Failed to resolve `%s': %s\n"),
+ hostname, gai_strerror (ret));
+ GNUNET_free (hostname);
+ return GNUNET_SYSERR;
+ }
+ next = res;
+ i = 0;
+ while (NULL != (pos = next))
+ {
+ next = pos->ai_next;
+ if ((disablev6) && (pos->ai_family == AF_INET6))
+ continue;
+ i++;
+ }
+ if (0 == i)
+ {
+ GNUNET_log (GNUNET_ERROR_TYPE_ERROR,
+ _("Failed to find %saddress for `%s'.\n"),
+ disablev6 ? "IPv4 " : "", hostname);
+ freeaddrinfo (res);
+ GNUNET_free (hostname);
+ return GNUNET_SYSERR;
+ }
+ resi = i;
+ saddrs = GNUNET_malloc ((resi + 1) * sizeof (struct sockaddr *));
+ saddrlens = GNUNET_malloc ((resi + 1) * sizeof (socklen_t));
+ i = 0;
+ next = res;
+ while (NULL != (pos = next))
+ {
+ next = pos->ai_next;
+ if ((disablev6) && (pos->ai_family == AF_INET6))
+ continue;
+ if ((pos->ai_protocol != IPPROTO_TCP) && (pos->ai_protocol != 0))
+ continue; /* not TCP */
+ if ((pos->ai_socktype != SOCK_STREAM) && (pos->ai_socktype != 0))
+ continue; /* huh? */
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "Service will bind to `%s'\n", GNUNET_a2s (pos->ai_addr,
+ pos->ai_addrlen));
+ if (pos->ai_family == AF_INET)
+ {
+ GNUNET_assert (pos->ai_addrlen == sizeof (struct sockaddr_in));
+ saddrlens[i] = pos->ai_addrlen;
+ saddrs[i] = GNUNET_malloc (saddrlens[i]);
+ memcpy (saddrs[i], pos->ai_addr, saddrlens[i]);
+ ((struct sockaddr_in *) saddrs[i])->sin_port = htons (port);
+ }
+ else
+ {
+ GNUNET_assert (pos->ai_family == AF_INET6);
+ GNUNET_assert (pos->ai_addrlen == sizeof (struct sockaddr_in6));
+ saddrlens[i] = pos->ai_addrlen;
+ saddrs[i] = GNUNET_malloc (saddrlens[i]);
+ memcpy (saddrs[i], pos->ai_addr, saddrlens[i]);
+ ((struct sockaddr_in6 *) saddrs[i])->sin6_port = htons (port);
+ }
+ i++;
+ }
+ GNUNET_free (hostname);
+ freeaddrinfo (res);
+ resi = i;
+ }
+ else
+ {
+ /* will bind against everything, just set port */
+ if (disablev6)
+ {
+ /* V4-only */
+ resi = 1;
+ i = 0;
+ saddrs = GNUNET_malloc ((resi + 1) * sizeof (struct sockaddr *));
+ saddrlens = GNUNET_malloc ((resi + 1) * sizeof (socklen_t));
+
+ saddrlens[i] = sizeof (struct sockaddr_in);
+ saddrs[i] = GNUNET_malloc (saddrlens[i]);
+#if HAVE_SOCKADDR_IN_SIN_LEN
+ ((struct sockaddr_in *) saddrs[i])->sin_len = saddrlens[i];
+#endif
+ ((struct sockaddr_in *) saddrs[i])->sin_family = AF_INET;
+ ((struct sockaddr_in *) saddrs[i])->sin_port = htons (port);
+ }
+ else
+ {
+ /* dual stack */
+ resi = 2;
+ saddrs = GNUNET_malloc ((resi + 1) * sizeof (struct sockaddr *));
+ saddrlens = GNUNET_malloc ((resi + 1) * sizeof (socklen_t));
+ i = 0;
+ saddrlens[i] = sizeof (struct sockaddr_in6);
+ saddrs[i] = GNUNET_malloc (saddrlens[i]);
+#if HAVE_SOCKADDR_IN_SIN_LEN
+ ((struct sockaddr_in6 *) saddrs[i])->sin6_len = saddrlens[0];
+#endif
+ ((struct sockaddr_in6 *) saddrs[i])->sin6_family = AF_INET6;
+ ((struct sockaddr_in6 *) saddrs[i])->sin6_port = htons (port);
+ i++;
+ saddrlens[i] = sizeof (struct sockaddr_in);
+ saddrs[i] = GNUNET_malloc (saddrlens[i]);
+#if HAVE_SOCKADDR_IN_SIN_LEN
+ ((struct sockaddr_in *) saddrs[i])->sin_len = saddrlens[1];
+#endif
+ ((struct sockaddr_in *) saddrs[i])->sin_family = AF_INET;
+ ((struct sockaddr_in *) saddrs[i])->sin_port = htons (port);
+ }
+ }
+ *addrs = saddrs;
+ *addr_lens = saddrlens;
+ return resi;
+}
+
+
+/**
+ * Ask NAT for addresses
+ *
+ * @param plugin the plugin handle
+ */
+static void
+server_start_report_addresses (struct HTTP_Server_Plugin *plugin)
+{
+ int res = GNUNET_OK;
+ struct sockaddr **addrs;
+ socklen_t *addrlens;
+
+ res = server_get_addresses (plugin,
+ plugin->name, plugin->env->cfg,
+ &addrs, &addrlens);
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ _("Found %u addresses to report to NAT service\n"), res);
+
+ if (GNUNET_SYSERR == res)
+ {
+ plugin->nat = NULL;
+ return;
+ }
+
+ plugin->nat =
+ GNUNET_NAT_register (plugin->env->cfg, GNUNET_YES, plugin->port,
+ (unsigned int) res,
+ (const struct sockaddr **) addrs, addrlens,
+ &server_nat_port_map_callback, NULL, plugin);
+ while (res > 0)
+ {
+ res--;
+ GNUNET_assert (addrs[res] != NULL);
+ GNUNET_free (addrs[res]);
+ }
+ GNUNET_free_non_null (addrs);
+ GNUNET_free_non_null (addrlens);
+}
+
+
+/**
+ * Stop NAT for addresses
+ *
+ * @param plugin the plugin handle
+ */
+static void
+server_stop_report_addresses (struct HTTP_Server_Plugin *plugin)
+{
+ /* Stop NAT handle */
+ if (NULL != plugin->nat)
+ GNUNET_NAT_unregister (plugin->nat);
+
+ /* Clean up addresses */
+ struct HttpAddressWrapper *w;
+
+ while (plugin->addr_head != NULL)
+ {
+ w = plugin->addr_head;
+ GNUNET_CONTAINER_DLL_remove (plugin->addr_head, plugin->addr_tail, w);
+ GNUNET_free (w->address);
+ GNUNET_free (w);
+ }
+}
+
+
+/**
+ * Check if IPv6 supported on this system
+ *
+ * @param plugin the plugin handle
+ * @return GNUNET_YES on success, else GNUNET_NO
+ */
+static int
+server_check_ipv6_support (struct HTTP_Server_Plugin *plugin)
+{
+ struct GNUNET_NETWORK_Handle *desc = NULL;
+ int res = GNUNET_NO;
+
+ /* Probe IPv6 support */
+ desc = GNUNET_NETWORK_socket_create (PF_INET6, SOCK_STREAM, 0);
+ if (NULL == desc)
+ {
+ if ((errno == ENOBUFS) || (errno == ENOMEM) || (errno == ENFILE) ||
+ (errno == EACCES))
+ {
+ GNUNET_log_strerror (GNUNET_ERROR_TYPE_ERROR, "socket");
+ }
+ GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, plugin->name,
+ _
+ ("Disabling IPv6 since it is not supported on this system!\n"));
+ res = GNUNET_NO;
+ }
+ else
+ {
+ GNUNET_break (GNUNET_OK == GNUNET_NETWORK_socket_close (desc));
+ desc = NULL;
+ res = GNUNET_YES;
+ }
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "Testing IPv6 on this system: %s\n",
+ (res == GNUNET_YES) ? "successful" : "failed");
+ return res;
+}
+
+
+/**
+ * Notify server about our external hostname
+ *
+ * @param cls plugin
+ * @param tc task context (unused)
+ */
+static void
+server_notify_external_hostname (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ struct HTTP_Server_Plugin *plugin = cls;
+ unsigned int urlen;
+ char *url;
+
+ plugin->notify_ext_task = GNUNET_SCHEDULER_NO_TASK;
+ if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
+ return;
+
+ GNUNET_asprintf(&url, "%s://%s", plugin->protocol, plugin->external_hostname);
+
+ urlen = strlen (url) + 1;
+ plugin->ext_addr = GNUNET_malloc (sizeof (struct HttpAddress) + urlen);
+ plugin->ext_addr->options = htonl(plugin->options);
+ plugin->ext_addr->urlen = htonl (urlen);
+ plugin->ext_addr_len = sizeof (struct HttpAddress) + urlen;
+ memcpy (&plugin->ext_addr[1], url, urlen);
+ GNUNET_free (url);
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "Notifying transport about external hostname address `%s'\n", plugin->external_hostname);
+
+#if BUILD_HTTPS
+ if (GNUNET_YES == plugin->verify_external_hostname)
+ GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, plugin->name,
+ "Enabling SSL verification for external hostname address `%s'\n", plugin->external_hostname);
+ plugin->env->notify_address (plugin->env->cls, GNUNET_YES,
+ plugin->ext_addr, plugin->ext_addr_len,
+ "https_client");
+#else
+ plugin->env->notify_address (plugin->env->cls, GNUNET_YES,
+ plugin->ext_addr, plugin->ext_addr_len,
+ "http_client");
+#endif
+}
+
+
+/**
+ * Configure the plugin
+ *
+ * @param plugin plugin handle
+ * @return GNUNET_OK on success, GNUNET_SYSERR on failure
+ */
+static int
+server_configure_plugin (struct HTTP_Server_Plugin *plugin)
+{
+ unsigned long long port;
+ unsigned long long max_connections;
+ char *bind4_address = NULL;
+ char *bind6_address = NULL;
+ char *eh_tmp = NULL;
+ int external_hostname_use_port;
+
+ /* Use IPv4? */
+ if (GNUNET_CONFIGURATION_have_value
+ (plugin->env->cfg, plugin->name, "USE_IPv4"))
+ {
+ plugin->use_ipv4 =
+ GNUNET_CONFIGURATION_get_value_yesno (plugin->env->cfg, plugin->name,
+ "USE_IPv4");
+ }
+ else
+ plugin->use_ipv4 = GNUNET_YES;
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ _("IPv4 support is %s\n"),
+ (plugin->use_ipv4 == GNUNET_YES) ? "enabled" : "disabled");
+
+ /* Use IPv6? */
+ if (GNUNET_CONFIGURATION_have_value
+ (plugin->env->cfg, plugin->name, "USE_IPv6"))
+ {
+ plugin->use_ipv6 =
+ GNUNET_CONFIGURATION_get_value_yesno (plugin->env->cfg, plugin->name,
+ "USE_IPv6");
+ }
+ else
+ plugin->use_ipv6 = GNUNET_YES;
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ _("IPv6 support is %s\n"),
+ (plugin->use_ipv6 == GNUNET_YES) ? "enabled" : "disabled");
+
+ if ((plugin->use_ipv4 == GNUNET_NO) && (plugin->use_ipv6 == GNUNET_NO))
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, plugin->name,
+ _
+ ("Neither IPv4 nor IPv6 are enabled! Fix in configuration\n"),
+ plugin->name);
+ return GNUNET_SYSERR;
+ }
+
+ /* Reading port number from config file */
+ 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);
+ return GNUNET_SYSERR;
+ }
+ plugin->port = port;
+
+ GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, plugin->name,
+ _("Using port %u\n"), plugin->port);
+
+ if ((plugin->use_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' in configuration file is invalid!\n"),
+ bind4_address);
+ GNUNET_free (bind4_address);
+ GNUNET_free (plugin->server_addr_v4);
+ plugin->server_addr_v4 = NULL;
+ return GNUNET_SYSERR;
+ }
+ else
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ _("Binding to IPv4 address %s\n"), bind4_address);
+ plugin->server_addr_v4->sin_family = AF_INET;
+ plugin->server_addr_v4->sin_port = htons (plugin->port);
+ }
+ GNUNET_free (bind4_address);
+ }
+
+ if ((plugin->use_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' in configuration file is invalid!\n"),
+ bind6_address);
+ GNUNET_free (bind6_address);
+ GNUNET_free (plugin->server_addr_v6);
+ plugin->server_addr_v6 = NULL;
+ return GNUNET_SYSERR;
+ }
+ else
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ _("Binding to IPv6 address %s\n"), bind6_address);
+ plugin->server_addr_v6->sin6_family = AF_INET6;
+ plugin->server_addr_v6->sin6_port = htons (plugin->port);
+ }
+ GNUNET_free (bind6_address);
+ }
+
+ plugin->verify_external_hostname = GNUNET_NO;
+#if BUILD_HTTPS
+ plugin->verify_external_hostname = GNUNET_CONFIGURATION_get_value_yesno (plugin->env->cfg, plugin->name,
+ "VERIFY_EXTERNAL_HOSTNAME");
+ if (GNUNET_SYSERR == plugin->verify_external_hostname)
+ plugin->verify_external_hostname = GNUNET_NO;
+ if (GNUNET_YES == plugin->verify_external_hostname)
+ plugin->options |= HTTP_OPTIONS_VERIFY_CERTIFICATE;
+#endif
+ external_hostname_use_port = GNUNET_CONFIGURATION_get_value_yesno (plugin->env->cfg, plugin->name,
+ "EXTERNAL_HOSTNAME_USE_PORT");
+ if (GNUNET_SYSERR == external_hostname_use_port)
+ external_hostname_use_port = GNUNET_NO;
+
+
+ if (GNUNET_YES == GNUNET_CONFIGURATION_get_value_string (plugin->env->cfg, plugin->name,
+ "EXTERNAL_HOSTNAME", &eh_tmp))
+ {
+ char * tmp = NULL;
+ char * pos = NULL;
+ char * pos_url = NULL;
+
+ if (NULL != strstr(eh_tmp, "://"))
+ {
+ tmp = &strstr(eh_tmp, "://")[3];
+ }
+ else
+ tmp = eh_tmp;
+
+ if (GNUNET_YES == external_hostname_use_port)
+ {
+ if ( (strlen (tmp) > 1) && (NULL != (pos = strchr(tmp, '/'))) )
+ {
+ pos_url = pos + 1;
+ pos[0] = '\0';
+ GNUNET_asprintf (&plugin->external_hostname, "%s:%u/%s", tmp, (uint16_t) port, (NULL == pos_url) ? "" : pos_url);
+ }
+ else
+ GNUNET_asprintf (&plugin->external_hostname, "%s:%u", tmp, (uint16_t) port);
+ }
+ else
+ plugin->external_hostname = GNUNET_strdup (tmp);
+ GNUNET_free (eh_tmp);
+
+ GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, plugin->name,
+ _("Using external hostname `%s'\n"), plugin->external_hostname);
+ plugin->notify_ext_task = GNUNET_SCHEDULER_add_now (&server_notify_external_hostname, plugin);
+
+ /* Use only configured external hostname */
+ if (GNUNET_CONFIGURATION_have_value
+ (plugin->env->cfg, plugin->name, "EXTERNAL_HOSTNAME_ONLY"))
+ {
+ plugin->external_only =
+ GNUNET_CONFIGURATION_get_value_yesno (plugin->env->cfg, plugin->name,
+ "EXTERNAL_HOSTNAME_ONLY");
+ }
+ else
+ plugin->external_only = GNUNET_NO;
+
+ if (GNUNET_YES == plugin->external_only)
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ _("Notifying transport only about hostname `%s'\n"), plugin->external_hostname);
+ }
+ else
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "No external hostname configured\n");
+
+ /* Optional parameters */
+ if (GNUNET_OK != GNUNET_CONFIGURATION_get_value_number (plugin->env->cfg,
+ plugin->name,
+ "MAX_CONNECTIONS", &max_connections))
+ max_connections = 128;
+ plugin->max_connections = max_connections;
+
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ _("Maximum number of connections is %u\n"),
+ plugin->max_connections);
+
+
+ plugin->peer_id_length = strlen (GNUNET_i2s_full (plugin->env->my_identity));
+
+ return GNUNET_OK;
+}
+
+
+/**
+ * Session was idle, so disconnect it
+ *
+ * @param cls the session
+ * @param tc task context
+ */
+static void
+server_session_timeout (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ GNUNET_assert (NULL != cls);
+ struct Session *s = cls;
+
+ s->timeout_task = GNUNET_SCHEDULER_NO_TASK;
+ GNUNET_log (TIMEOUT_LOG,
+ "Session %p was idle for %s, disconnecting\n",
+ s,
+ GNUNET_STRINGS_relative_time_to_string (HTTP_SERVER_SESSION_TIMEOUT,
+ GNUNET_YES));
+
+ /* call session destroy function */
+ GNUNET_assert (GNUNET_OK == server_disconnect (s));
+}
+
+
+/**
+* Start session timeout for session s
+*
+* @param s the session
+*/
+static void
+server_start_session_timeout (struct Session *s)
+{
+ GNUNET_assert (NULL != s);
+ GNUNET_assert (GNUNET_SCHEDULER_NO_TASK == s->timeout_task);
+ s->timeout_task = GNUNET_SCHEDULER_add_delayed (HTTP_SERVER_SESSION_TIMEOUT,
+ &server_session_timeout,
+ s);
+ GNUNET_log (TIMEOUT_LOG,
+ "Timeout for session %p set to %s\n",
+ s,
+ GNUNET_STRINGS_relative_time_to_string (HTTP_SERVER_SESSION_TIMEOUT,
+ GNUNET_YES));
+}
+
+
+/**
+* Increment session timeout due to activity session s
+*
+* @param s the session
+*/
+static void
+server_reschedule_session_timeout (struct Session *s)
+{
+ GNUNET_assert (NULL != s);
+ GNUNET_assert (GNUNET_SCHEDULER_NO_TASK != s->timeout_task);
+
+ GNUNET_SCHEDULER_cancel (s->timeout_task);
+ s->timeout_task = GNUNET_SCHEDULER_add_delayed (HTTP_SERVER_SESSION_TIMEOUT,
+ &server_session_timeout,
+ s);
+ GNUNET_log (TIMEOUT_LOG,
+ "Timeout rescheduled for session %p set to %s\n",
+ s,
+ GNUNET_STRINGS_relative_time_to_string (HTTP_SERVER_SESSION_TIMEOUT,
+ GNUNET_YES));
+}
+
+
+/**
+ * Exit point from the plugin.
+ *
+ * @param cls api
+ * @return NULL
*/
-static const char *
-http_server_plugin_address_to_string (void *cls, const void *addr, size_t addrlen)
+void *
+LIBGNUNET_PLUGIN_TRANSPORT_DONE (void *cls)
{
- GNUNET_break (0);
+ struct GNUNET_TRANSPORT_PluginFunctions *api = cls;
+ struct HTTP_Server_Plugin *plugin = api->cls;
+ struct Session *pos;
+ struct Session *next;
+
+ if (NULL == api->cls)
+ {
+ /* Free for stub mode */
+ GNUNET_free (api);
+ return NULL;
+ }
+ plugin->in_shutdown = GNUNET_YES;
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ _("Shutting down plugin `%s'\n"),
+ plugin->name);
+
+ if (GNUNET_SCHEDULER_NO_TASK != plugin->notify_ext_task)
+ {
+ GNUNET_SCHEDULER_cancel (plugin->notify_ext_task);
+ plugin->notify_ext_task = GNUNET_SCHEDULER_NO_TASK;
+ }
+
+ if (NULL != plugin->ext_addr)
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "Notifying transport to remove address `%s'\n",
+ http_common_plugin_address_to_string (NULL,
+ p->protocol,
+ plugin->ext_addr,
+ plugin->ext_addr_len));
+#if BUILD_HTTPS
+ plugin->env->notify_address (plugin->env->cls,
+ GNUNET_NO,
+ plugin->ext_addr,
+ plugin->ext_addr_len,
+ "https_client");
+#else
+ plugin->env->notify_address (plugin->env->cls,
+ GNUNET_NO,
+ plugin->ext_addr,
+ plugin->ext_addr_len,
+ "http_client");
+#endif
+
+ }
+
+ /* Stop to report addresses to transport service */
+ server_stop_report_addresses (plugin);
+ server_stop (plugin);
+ next = plugin->head;
+ while (NULL != (pos = next))
+ {
+ next = pos->next;
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ "Removing left over session %p\n", pos);
+
+ if ((GNUNET_YES == pos->session_passed) && (GNUNET_NO == pos->session_ended))
+ {
+ /* Notify transport immediately that this session is invalid */
+ pos->session_ended = GNUNET_YES;
+ plugin->env->session_end (plugin->env->cls, &pos->target, pos);
+ }
+
+ server_delete_session (pos);
+ }
+
+ /* Clean up */
+ GNUNET_free_non_null (plugin->external_hostname);
+ GNUNET_free_non_null (plugin->ext_addr);
+ GNUNET_free_non_null (plugin->server_addr_v4);
+ GNUNET_free_non_null (plugin->server_addr_v6);
+
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, plugin->name,
+ _("Shutdown for plugin `%s' complete\n"),
+ plugin->name);
+
+ GNUNET_free (plugin);
+ GNUNET_free (api);
return NULL;
}
+const char *http_plugin_address_to_string (void *cls,
+ const void *addr,
+ size_t addrlen)
+{
+#if BUILD_HTTPS
+ return http_common_plugin_address_to_string (cls, PLUGIN_NAME, addr, addrlen);
+#else
+ return http_common_plugin_address_to_string (cls, PLUGIN_NAME, addr, addrlen);
+#endif
+
+}
+
+/**
+ * Function obtain the network type for a session
+ *
+ * @param cls closure ('struct Plugin*')
+ * @param session the session
+ * @return the network type in HBO or GNUNET_SYSERR
+ */
+static enum GNUNET_ATS_Network_Type
+http_server_get_network (void *cls,
+ struct Session *session)
+{
+ GNUNET_assert (NULL != session);
+ return ntohl (session->ats_address_network_type);
+}
/**
* Entry point for the plugin.
+ *
+ * @param cls env
+ * @return api
*/
void *
LIBGNUNET_PLUGIN_TRANSPORT_INIT (void *cls)
{
struct GNUNET_TRANSPORT_PluginEnvironment *env = cls;
struct GNUNET_TRANSPORT_PluginFunctions *api;
- struct Plugin *plugin;
+ struct HTTP_Server_Plugin *plugin;
- plugin = GNUNET_malloc (sizeof (struct Plugin));
+ plugin = GNUNET_malloc (sizeof (struct HTTP_Server_Plugin));
plugin->env = env;
+ p = plugin;
+
+ if (NULL == env->receive)
+ {
+ /* run in 'stub' mode (i.e. as part of gnunet-peerinfo), don't fully
+ initialze the plugin or the API */
+ api = GNUNET_malloc (sizeof (struct GNUNET_TRANSPORT_PluginFunctions));
+ api->cls = NULL;
+ api->address_to_string = &http_plugin_address_to_string;
+ api->string_to_address = &http_common_plugin_string_to_address;
+ api->address_pretty_printer = &http_common_plugin_address_pretty_printer;
+ return api;
+ }
+
api = GNUNET_malloc (sizeof (struct GNUNET_TRANSPORT_PluginFunctions));
api->cls = plugin;
api->send = &http_server_plugin_send;
api->disconnect = &http_server_plugin_disconnect;
- api->address_pretty_printer = &http_server_plugin_address_pretty_printer;
api->check_address = &http_server_plugin_address_suggested;
- api->address_to_string = &http_server_plugin_address_to_string;
- return api;
-}
+ api->get_session = &http_server_plugin_get_session;
+ api->address_to_string = &http_plugin_address_to_string;
+ api->string_to_address = &http_common_plugin_string_to_address;
+ api->address_pretty_printer = &http_common_plugin_address_pretty_printer;
+ api->get_network = &http_server_get_network;
-/**
- * Exit point from the plugin.
- */
-void *
-LIBGNUNET_PLUGIN_TRANSPORT_DONE (void *cls)
-{
- struct GNUNET_TRANSPORT_PluginFunctions *api = cls;
- struct Plugin *plugin = api->cls;
+#if BUILD_HTTPS
+ plugin->name = "transport-https_server";
+ plugin->protocol = "https";
+#else
+ plugin->name = "transport-http_server";
+ plugin->protocol = "http";
+#endif
- GNUNET_free (plugin);
- GNUNET_free (api);
- return NULL;
+ /* Configure plugin */
+ if (GNUNET_SYSERR == server_configure_plugin (plugin))
+ {
+ LIBGNUNET_PLUGIN_TRANSPORT_DONE (api);
+ return NULL;
+ }
+
+ /* Check IPv6 support */
+ if (GNUNET_YES == plugin->use_ipv6)
+ plugin->use_ipv6 = server_check_ipv6_support (plugin);
+
+ /* Report addresses to transport service */
+ if (GNUNET_NO == plugin->external_only)
+ server_start_report_addresses (plugin);
+
+ if (GNUNET_SYSERR == server_start (plugin))
+ {
+ LIBGNUNET_PLUGIN_TRANSPORT_DONE (api);
+ return NULL;
+ }
+ return api;
}
/* end of plugin_transport_http_server.c */
projects / oweals / gnunet.git / blobdiff