/*
This file is part of GNUnet
- (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Christian Grothoff (and other contributing authors)
+ Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 GNUnet e.V.
- 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 free software: you can redistribute it and/or modify it
+ under the terms of the GNU Affero General Public License as published
+ by the Free Software Foundation, either version 3 of the License,
+ 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.
+ Affero General Public License for more details.
+
+ You should have received a copy of the GNU Affero General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
- 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.
+ SPDX-License-Identifier: AGPL3.0-or-later
*/
/**
* @brief http transport service plugin
* @author Matthias Wachs
*/
+#ifndef PLUGIN_TRANSPORT_HTTP_H
+#define PLUGIN_TRANSPORT_HTTP_H
#include "platform.h"
#include "gnunet_common.h"
#include "gnunet_os_lib.h"
#include "gnunet_nat_lib.h"
#include "microhttpd.h"
-#include <curl/curl.h>
+/* Just included for the right curl.h */
+#include "gnunet_curl_lib.h"
-#define DEBUG_HTTP GNUNET_NO
-#define VERBOSE_SERVER GNUNET_NO
-#define VERBOSE_CLIENT GNUNET_NO
+#define DEBUG_HTTP GNUNET_EXTRA_LOGGING
+#define VERBOSE_SERVER GNUNET_EXTRA_LOGGING
+#define VERBOSE_CLIENT GNUNET_EXTRA_LOGGING
#define VERBOSE_CURL GNUNET_NO
#if BUILD_HTTPS
#define OUTBOUND GNUNET_NO
-#define HTTP_NOT_VALIDATED_TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 3)
+#define HTTP_NOT_VALIDATED_TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 15)
/**
* Encapsulation of all of the state of the plugin.
struct GNUNET_TRANSPORT_PluginEnvironment *env;
/**
- * List of open sessions.
+ * Head of linked list of open sessions.
*/
- struct Session *head;
+ struct GNUNET_ATS_Session *head;
- struct Session *tail;
+ /**
+ * Tail of linked list of open sessions.
+ */
+ struct GNUNET_ATS_Session *tail;
/**
* NAT handle & address management
*/
struct GNUNET_NAT_Handle *nat;
-
/**
- * ipv4 DLL head
+ * Our own IPv4 addresses DLL head
*/
- struct IPv4HttpAddressWrapper *ipv4_addr_head;
+ struct HttpAddressWrapper *addr_head;
/**
- * ipv4 DLL tail
+ * Our own IPv4 addresses DLL tail
*/
- struct IPv4HttpAddressWrapper *ipv4_addr_tail;
+ struct HttpAddressWrapper *addr_tail;
/**
- * ipv6 DLL head
+ * External hostname the plugin can be connected to, can be different to
+ * the host's FQDN, used e.g. for reverse proxying
*/
- struct IPv6HttpAddressWrapper *ipv6_addr_head;
+ char *external_hostname;
/**
- * ipv6 DLL tail
+ * External hostname the plugin can be connected to, can be different to
+ * the host's FQDN, used e.g. for reverse proxying
*/
- struct IPv6HttpAddressWrapper *ipv6_addr_tail;
+ struct HttpAddress *ext_addr;
+ /**
+ * External address length
+ */
+ size_t ext_addr_len;
- /* Plugin configuration */
+ /**
+ * Task calling transport service about external address
+ */
+ struct GNUNET_SCHEDULER_Task * notify_ext_task;
+ /**
+ * Plugin name.
+ * Equals configuration section: transport-http, transport-https
+ */
char *name;
+ /**
+ * Plugin protocol
+ * http, https
+ */
char *protocol;
+ /**
+ * Use IPv4? #GNUNET_YES or #GNUNET_NO
+ */
int ipv4;
+ /**
+ * Use IPv6? #GNUNET_YES or #GNUNET_NO
+ */
int ipv6;
+ /**
+ * Does plugin just use outbound connections and not accept inbound?
+ */
+ int client_only;
+
+ /**
+ * Port used
+ */
uint16_t port;
+ /**
+ * Maximum number of sockets the plugin can use
+ * Each http inbound /outbound connections are two connections
+ */
int max_connections;
+ /**
+ * Number of outbound sessions
+ */
+ unsigned int outbound_sessions;
+
+ /**
+ * Number of inbound sessions
+ */
+ unsigned int inbound_sessions;
+ /**
+ * libCurl TLS crypto init string, can be set to enhance performance
+ *
+ * Example:
+ *
+ * Use RC4-128 instead of AES:
+ * NONE:+VERS-TLS1.0:+ARCFOUR-128:+SHA1:+RSA:+COMP-NULL
+ */
+ char *crypto_init;
- /* Plugin values */
+ /**
+ * TLS key
+ */
+ char *key;
+ /**
+ * TLS certificate
+ */
+ char *cert;
+ /**
+ * Current number of establishes connections
+ */
int cur_connections;
- uint32_t last_tag;
- /*
- * Server handles
+
+ /**
+ * Last used unique HTTP connection tag
*/
+ uint32_t last_tag;
+ /**
+ * MHD IPv4 daemon
+ */
struct MHD_Daemon *server_v4;
- GNUNET_SCHEDULER_TaskIdentifier server_v4_task;
- struct MHD_Daemon *server_v6;
- GNUNET_SCHEDULER_TaskIdentifier server_v6_task;
+ /**
+ * MHD IPv4 task
+ */
+ struct GNUNET_SCHEDULER_Task * server_v4_task;
- struct sockaddr_in * server_addr_v4;
- struct sockaddr_in6 * server_addr_v6;
+ /**
+ * The IPv4 server is scheduled to run asap
+ */
+ int server_v4_immediately;
- char *crypto_init;
- char *key;
- char *cert;
+ /**
+ * MHD IPv6 daemon
+ */
+ struct MHD_Daemon *server_v6;
- struct Session *server_semi_head;
+ /**
+ * MHD IPv4 task
+ */
+ struct GNUNET_SCHEDULER_Task * server_v6_task;
- struct Session *server_semi_tail;
+ /**
+ * The IPv6 server is scheduled to run asap
+ */
+ int server_v6_immediately;
+ /**
+ * IPv4 server socket to bind to
+ */
+ struct sockaddr_in *server_addr_v4;
+ /**
+ * IPv6 server socket to bind to
+ */
+ struct sockaddr_in6 *server_addr_v6;
- /*
- * Client handles
+ /**
+ * Head of server semi connections
+ * A full session consists of 2 semi-connections: send and receive
+ * If not both directions are established the server keeps this sessions here
*/
+ struct GNUNET_ATS_Session *server_semi_head;
+
+ /**
+ * Tail of server semi connections
+ * A full session consists of 2 semi-connections: send and receive
+ * If not both directions are established the server keeps this sessions here
+ */
+ struct GNUNET_ATS_Session *server_semi_tail;
/**
* cURL Multihandle
*/
CURLM *client_mh;
- GNUNET_SCHEDULER_TaskIdentifier client_perform_task;
+ /**
+ * curl perform task
+ */
+ struct GNUNET_SCHEDULER_Task * client_perform_task;
+
+};
+
+GNUNET_NETWORK_STRUCT_BEGIN
+
+/**
+ * HTTP addresses including a full URI
+ */
+struct HttpAddress
+{
+ /**
+ * Length of the address following in NBO
+ */
+ uint32_t addr_len GNUNET_PACKED;
+
+ /**
+ * Address following
+ */
+ void *addr GNUNET_PACKED;
+};
+
+/**
+ * IPv4 addresses
+ */
+struct IPv4HttpAddress
+{
+ /**
+ * IPv4 address, in network byte order.
+ */
+ uint32_t ipv4_addr GNUNET_PACKED;
+
+ /**
+ * Port number, in network byte order.
+ */
+ uint16_t u4_port GNUNET_PACKED;
+};
+
+/**
+ * IPv4 addresses
+ */
+struct IPv6HttpAddress
+{
+ /**
+ * IPv6 address.
+ */
+ struct in6_addr ipv6_addr GNUNET_PACKED;
+
+ /**
+ * Port number, in network byte order.
+ */
+ uint16_t u6_port GNUNET_PACKED;
+};
+GNUNET_NETWORK_STRUCT_END
+
+struct ServerRequest
+{
+ /**
+ * _RECV or _SEND
+ */
+ int direction;
+
+ /**
+ * Should this connection get disconnected? #GNUNET_YES / #GNUNET_NO
+ */
+ int disconnect;
+
+ /**
+ * The session this server connection belongs to
+ */
+ struct GNUNET_ATS_Session *session;
+
+ /**
+ * The MHD connection
+ */
+ struct MHD_Connection *mhd_conn;
};
+
/**
* Session handle for connections.
*/
-struct Session
+struct GNUNET_ATS_Session
{
+ /**
+ * To whom are we talking to
+ */
+ struct GNUNET_PeerIdentity target;
/**
* Stored in a linked list.
*/
- struct Session *next;
+ struct GNUNET_ATS_Session *next;
/**
* Stored in a linked list.
*/
- struct Session *prev;
+ struct GNUNET_ATS_Session *prev;
/**
* Pointer to the global plugin struct.
*/
struct Plugin *plugin;
+ /**
+ * Address
+ */
+ void *addr;
+
+ /**
+ * Address length
+ */
+ size_t addrlen;
+
+ /**
+ * ATS network type in NBO
+ */
+ uint32_t ats_address_network_type;
+
/**
* next pointer for double linked list
*/
*/
struct HTTP_Message *msg_tail;
-
/**
- * message stream tokenizer for incoming data
+ * Message stream tokenizer for incoming data
*/
struct GNUNET_SERVER_MessageStreamTokenizer *msg_tk;
/**
- * Continuation function to call once the transmission buffer
- * has again space available. NULL if there is no
- * continuation to call.
+ * Absolute time when to receive data again
+ * Used for receive throttling
*/
- GNUNET_TRANSPORT_TransmitContinuation transmit_cont;
-
-
- void *addr;
-
- size_t addrlen;
+ struct GNUNET_TIME_Absolute next_receive;
/**
- * Closure for transmit_cont.
+ * Inbound or outbound connection
+ * Outbound: #GNUNET_NO (client is used to send and receive)
+ * Inbound : #GNUNET_YES (server is used to send and receive)
*/
- void *transmit_cont_cls;
+ int inbound;
/**
- * To whom are we talking to (set to our identity
- * if we are still waiting for the welcome message)
+ * Unique HTTP/S connection tag for this connection
*/
- struct GNUNET_PeerIdentity target;
+ uint32_t tag;
/**
- * At what time did we reset last_received last?
+ * Client send handle
*/
- //struct GNUNET_TIME_Absolute last_quota_update;
+ void *client_put;
/**
- * How many bytes have we received since the "last_quota_update"
- * timestamp?
+ * Client receive handle
*/
- //uint64_t last_received;
+ void *client_get;
/**
- * Number of bytes per ms that this peer is allowed
- * to send to us.
+ * Task to wake up client receive handle when receiving is allowed again
*/
- //uint32_t quota;
+ struct GNUNET_SCHEDULER_Task * recv_wakeup_task;
+ /**
+ * Session timeout task
+ */
+ struct GNUNET_SCHEDULER_Task * timeout_task;
- int inbound;
-
- void *client_put;
- void *client_get;
+ /**
+ * Is client send handle paused since there are no data to send?
+ * #GNUNET_YES or #GNUNET_NO
+ */
int client_put_paused;
- void *server_recv;
- void *server_send;
- struct GNUNET_TIME_Absolute next_receive;
- GNUNET_SCHEDULER_TaskIdentifier recv_wakeup_task;
- uint32_t tag;
+ /**
+ * Client send handle
+ */
+ struct ServerRequest *server_recv;
+ /**
+ * Client send handle
+ */
+ struct ServerRequest *server_send;
};
+
/**
* Message to send using http
*/
GNUNET_TRANSPORT_TransmitContinuation transmit_cont;
/**
- * Closure for transmit_cont.
+ * Closure for @e transmit_cont.
*/
void *transmit_cont_cls;
};
+
+struct GNUNET_ATS_Session *
+create_session (struct Plugin *plugin,
+ const struct GNUNET_PeerIdentity *target,
+ const void *addr,
+ size_t addrlen);
+
+
+int
+exist_session (struct Plugin *plugin,
+ struct GNUNET_ATS_Session *s);
+
+
void
-delete_session (struct Session *s);
+delete_session (struct GNUNET_ATS_Session *s);
+
+
+int
+exist_session (struct Plugin *plugin,
+ struct GNUNET_ATS_Session *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 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);
+http_plugin_receive (void *cls,
+ const struct GNUNET_PeerIdentity *peer,
+ const struct GNUNET_MessageHeader *message,
+ struct GNUNET_ATS_Session *session,
+ const char *sender_address,
+ uint16_t sender_address_len);
+
const char *
-http_plugin_address_to_string (void *cls, const void *addr, size_t addrlen);
+http_plugin_address_to_string (void *cls,
+ const void *addr,
+ size_t addrlen);
+
int
-client_disconnect (struct Session *s);
+client_disconnect (struct GNUNET_ATS_Session *s);
+
int
-client_connect (struct Session *s);
+client_connect (struct GNUNET_ATS_Session *s);
+
int
-client_send (struct Session *s, struct HTTP_Message *msg);
+client_send (struct GNUNET_ATS_Session *s, struct HTTP_Message *msg);
+
int
client_start (struct Plugin *plugin);
+
void
client_stop (struct Plugin *plugin);
+
int
-server_disconnect (struct Session *s);
+server_disconnect (struct GNUNET_ATS_Session *s);
+
int
-server_send (struct Session *s, struct HTTP_Message * msg);
+server_send (struct GNUNET_ATS_Session *s, struct HTTP_Message *msg);
+
int
server_start (struct Plugin *plugin);
+
void
server_stop (struct Plugin *plugin);
+
void
notify_session_end (void *cls,
- const struct GNUNET_PeerIdentity *
- peer, struct Session * s);
+ const struct GNUNET_PeerIdentity *peer,
+ struct GNUNET_ATS_Session *s);
+
+/*#ifndef PLUGIN_TRANSPORT_HTTP_H*/
+#endif
/* end of plugin_transport_http.h */
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