/*
- This file is part of GNUnet
- (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Christian Grothoff (and other contributing authors)
+ This file is part of GNUnet
+ (C) 2010, 2011, 2012 Christian Grothoff (and other contributing authors)
- GNUnet is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published
- by the Free Software Foundation; either version 3, or (at your
- option) any later version.
+ GNUnet is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published
+ by the Free Software Foundation; either version 3, or (at your
+ option) any later version.
- GNUnet is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
+ GNUnet is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with GNUnet; see the file COPYING. If not, write to the
- Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA.
- */
+ You should have received a copy of the GNU General Public License
+ along with GNUnet; see the file COPYING. If not, write to the
+ Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA.
+*/
/**
* @file transport/plugin_transport_wlan.c
* @brief transport plugin for wlan
* @author David Brodski
+ * @author Christian Grothoff
*/
+//TODO split rx and tx structures for better handling
+
#include "platform.h"
#include "gnunet_hello_lib.h"
#include "gnunet_protocols.h"
#include "gnunet_common.h"
#include "gnunet_crypto_lib.h"
#include "gnunet_fragmentation_lib.h"
-//#include "wlan/ieee80211.h"
-//#include <netinet/ip.h>
+#include "gnunet_constants.h"
+
+/**
+ * DEBUG switch
+ */
+#define DEBUG_WLAN GNUNET_EXTRA_LOGGING
-#include <string.h>
#define PROTOCOL_PREFIX "wlan"
+#define PLUGIN_LOG_NAME "wlan-plugin"
+
+/**
+ * Max size of packet
+ */
+#define WLAN_MTU 1430
+
+/**
+ * time out of a session
+ */
+#define SESSION_TIMEOUT GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT
+
/**
- * Max size of packet from helper
+ * time out of a mac endpoint
+ */
+#define MACENDPOINT_TIMEOUT GNUNET_TIME_relative_multiply (GNUNET_CONSTANTS_IDLE_CONNECTION_TIMEOUT, 2)
+
+/**
+ * scaling factor for hello beacon
*/
-#define WLAN_MTU 1450
+#define HELLO_BEACON_SCALING_FACTOR 30
/**
- * Time until retransmission of a fragment in ms
+ * scaling factor for restarting the helper
*/
-#define FRAGMENT_TIMEOUT GNUNET_TIME_UNIT_SECONDS
+#define HELPER_RESTART_SCALING_FACTOR 2
/**
* max size of fragment queue
*/
#define FRAGMENT_QUEUE_MESSAGES_OUT_PER_MACENDPOINT 1
-/**
- * time until message in in queue
- */
-#define MESSAGE_IN_TIMEOUT GNUNET_TIME_UNIT_SECONDS
-
/**
* max messages in in queue
*/
#define MESSAGES_IN_QUEUE_SIZE 10
+
/**
* max messages in in queue per session/client
*/
#define MESSAGES_IN_DEFRAG_QUEUE_PER_MAC 1
-/**
- * scaling factor for hello beacon
- */
-#define HALLO_BEACON_SCALING_FACTOR 900
-
-#define DEBUG_wlan GNUNET_NO
-#define DEBUG_wlan_retransmission GNUNET_NO
-#define DEBUG_wlan_ip_udp_packets_on_air GNUNET_NO
-
-#define MESSAGE_LENGHT_UNKNOWN -1
-//#define NO_MESSAGE_OR_MESSAGE_FINISHED -2
-/**
- * size of log for recently used incomming messages id
- */
-#define MESSAGE_ID_BACKLOG_SIZE 5
-/**
- * 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)
-
-#define IEEE80211_ADDR_LEN 6 /* size of 802.11 address */
-
-#define IEEE80211_FC0_VERSION_MASK 0x03
-#define IEEE80211_FC0_VERSION_SHIFT 0
-#define IEEE80211_FC0_VERSION_0 0x00
-#define IEEE80211_FC0_TYPE_MASK 0x0c
-#define IEEE80211_FC0_TYPE_SHIFT 2
-#define IEEE80211_FC0_TYPE_MGT 0x00
-#define IEEE80211_FC0_TYPE_CTL 0x04
-#define IEEE80211_FC0_TYPE_DATA 0x08
-
-/*
- * Structure of an internet header, naked of options.
- */
-struct iph
-{
-#if __BYTE_ORDER == __LITTLE_ENDIAN
- unsigned int ip_hl :4; /* header length */
- unsigned int ip_v :4; /* version */
-#endif
-#if __BYTE_ORDER == __BIG_ENDIAN
- unsigned int ip_v:4; /* version */
- unsigned int ip_hl:4; /* header length */
-#endif
- u_int8_t ip_tos; /* type of service */
- u_short ip_len; /* total length */
- u_short ip_id; /* identification */
- u_short ip_off; /* fragment offset field */
-#define IP_RF 0x8000 /* reserved fragment flag */
-#define IP_DF 0x4000 /* dont fragment flag */
-#define IP_MF 0x2000 /* more fragments flag */
-#define IP_OFFMASK 0x1fff /* mask for fragmenting bits */
- u_int8_t ip_ttl; /* time to live */
- u_int8_t ip_p; /* protocol */
- u_short ip_sum; /* checksum */
- struct in_addr ip_src, ip_dst; /* source and dest address */
-};
-
-struct udphdr
-{
- u_int16_t source;
- u_int16_t dest;
- u_int16_t len;
- u_int16_t check;
-};
-/*
- * generic definitions for IEEE 802.11 frames
- */
-struct ieee80211_frame
-{
- u_int8_t i_fc[2];
- u_int8_t i_dur[2];
- u_int8_t i_addr1[IEEE80211_ADDR_LEN];
- u_int8_t i_addr2[IEEE80211_ADDR_LEN];
- u_int8_t i_addr3[IEEE80211_ADDR_LEN];
- u_int8_t i_seq[2];
-#if DEBUG_wlan_ip_udp_packets_on_air
-u_int8_t llc[4];
-struct iph ip;
-struct udphdr udp;
-#endif
-}GNUNET_PACKED;
/**
- * Initial handshake message for a session.
+ * Link layer control fields for better compatibility
+ * (i.e. GNUnet over WLAN is not IP-over-WLAN).
*/
-struct WelcomeMessage
-{
- /**
- * Type is GNUNET_MESSAGE_TYPE_TRANSPORT_TCP_WELCOME.
- */
- struct GNUNET_MessageHeader header;
+#define WLAN_LLC_DSAP_FIELD 0x1f
+#define WLAN_LLC_SSAP_FIELD 0x1f
- /**
- * Identit*mac_y of the node connecting (TCP client)
- */
- struct GNUNET_PeerIdentity clientIdentity;
-};
/**
* Encapsulation of all of the state of the plugin.
/**
* List of open connections. head
*/
- struct MacEndpoint * mac_head;
+ struct MacEndpoint *mac_head;
/**
* List of open connections. tail
*/
- struct MacEndpoint * mac_tail;
+ struct MacEndpoint *mac_tail;
/**
* Number of connections
/**
* encapsulation of data from the local wlan helper program
*/
- struct GNUNET_SERVER_MessageStreamTokenizer * suid_tokenizer;
+ struct GNUNET_SERVER_MessageStreamTokenizer *suid_tokenizer;
/**
* encapsulation of packets received from the wlan helper
*/
- struct GNUNET_SERVER_MessageStreamTokenizer * data_tokenizer;
+ struct GNUNET_SERVER_MessageStreamTokenizer *data_tokenizer;
/**
- * stdout pipe handle for the gnunet-wlan-helper process
+ * stdout pipe handle for the gnunet-helper-transport-wlan process
*/
struct GNUNET_DISK_PipeHandle *server_stdout;
/**
- * stdout file handle for the gnunet-wlan-helper process
+ * stdout file handle for the gnunet-helper-transport-wlan process
*/
const struct GNUNET_DISK_FileHandle *server_stdout_handle;
/**
- * stdin pipe handle for the gnunet-wlan-helper process
+ * stdin pipe handle for the gnunet-helper-transport-wlan process
*/
struct GNUNET_DISK_PipeHandle *server_stdin;
/**
- * stdin file handle for the gnunet-wlan-helper process
+ * stdin file handle for the gnunet-helper-transport-wlan process
*/
const struct GNUNET_DISK_FileHandle *server_stdin_handle;
*/
char *interface;
+ /**
+ * Mode of operation for the helper, 0 = normal, 1 = first loopback, 2 = second loopback
+ */
+ long long unsigned int testmode;
+
/**
* The mac_address of the wlan card given to us by the helper.
*/
- struct MacAddress mac_address;
+ struct GNUNET_TRANSPORT_WLAN_MacAddress mac_address;
/**
* Sessions currently pending for transmission
* to a peer, if any.
*/
- struct Sessionqueue * pending_Sessions_head;
+ struct Sessionqueue *pending_Sessions_head;
/**
* Sessions currently pending for transmission
* to a peer (tail), if any.
*/
- struct Sessionqueue * pending_Sessions_tail;
+ struct Sessionqueue *pending_Sessions_tail;
/**
* number of pending sessions
/**
* messages ready for send, head
*/
- struct FragmentMessage_queue * sending_messages_head;
+ struct FragmentMessage_queue *sending_messages_head;
+
/**
* messages ready for send, tail
*/
- struct FragmentMessage_queue * sending_messages_tail;
+ struct FragmentMessage_queue *sending_messages_tail;
+
/**
* time of the next "hello-beacon"
*/
/**
* queue to send acks for received fragments (head)
*/
- struct AckSendQueue * ack_send_queue_head;
+ struct AckSendQueue *ack_send_queue_head;
/**
* queue to send acks for received fragments (tail)
*/
- struct AckSendQueue * ack_send_queue_tail;
+ struct AckSendQueue *ack_send_queue_tail;
/**
* Tracker for bandwidth limit
*/
struct GNUNET_BANDWIDTH_Tracker tracker;
+
+ /**
+ * saves the current state of the helper process
+ */
+ int helper_is_running;
};
/**
*/
struct Finish_send
{
- struct Plugin * plugin;
- char * msgheader;
- struct GNUNET_MessageHeader * msgstart;
+ /**
+ * pointer to the global plugin struct
+ */
+ struct Plugin *plugin;
+
+ /**
+ * head of the next part to send to the helper
+ */
+ const char *head_of_next_write;
+
+ /**
+ * Start of the message to send, needed for free
+ */
+ struct GNUNET_MessageHeader *msgstart;
+
+ /**
+ * rest size to send
+ */
ssize_t size;
};
/**
* Queue of sessions, for the general session queue and the pending session queue
*/
-//TODO DOXIGEN
+//TODO DOXYGEN
struct Sessionqueue
{
- struct Sessionqueue * next;
- struct Sessionqueue * prev;
- struct Session * content;
+ struct Sessionqueue *next;
+ struct Sessionqueue *prev;
+ struct Session *content;
+#if !HAVE_UNALIGNED_64_ACCESS
+ void *dummy; /* for alignment, see #1909 */
+#endif
};
+
/**
* Queue of fragmented messages, for the sending queue of the plugin
*/
-//TODO DOXIGEN
+//TODO DOXYGEN
struct FragmentMessage_queue
{
- struct FragmentMessage_queue * next;
- struct FragmentMessage_queue * prev;
- struct FragmentMessage * content;
+ struct FragmentMessage_queue *next;
+ struct FragmentMessage_queue *prev;
+ struct FragmentMessage *content;
};
+
/**
* Queue for the fragments received
*/
-//TODO DOXIGEN
+//TODO DOXYGEN
struct Receive_Fragment_Queue
{
- struct Receive_Fragment_Queue * next;
- struct Receive_Fragment_Queue * prev;
+ struct Receive_Fragment_Queue *next;
+ struct Receive_Fragment_Queue *prev;
+
uint16_t num;
- const char * msg;
- uint16_t size;
- struct Radiotap_rx rxinfo;
+ // const char *msg;
+ // uint16_t size;
+ struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage *rx_msg;
};
-//TODO DOXIGEN
+
+//TODO DOXYGEN
struct MacEndpoint_id_fragment_triple
{
- struct MacEndpoint * endpoint;
+ struct MacEndpoint *endpoint;
uint32_t message_id;
- struct FragmentMessage * fm;
+ struct FragmentMessage *fm;
};
-//TODO DOXIGEN
+//TODO DOXYGEN
struct Plugin_Session_pair
{
- struct Plugin * plugin;
- struct Session * session;
+ struct Plugin *plugin;
+ struct Session *session;
+};
+
+
+GNUNET_NETWORK_STRUCT_BEGIN
+
+/**
+ * Header for messages which need fragmentation
+ */
+struct WlanHeader
+{
+
+ /**
+ * Message type is GNUNET_MESSAGE_TYPE_WLAN_DATA.
+ */
+ struct GNUNET_MessageHeader header;
+
+ /**
+ * checksum/error correction
+ */
+ uint32_t crc GNUNET_PACKED;
+
+ /**
+ * To whom are we talking to (set to our identity
+ * if we are still waiting for the welcome message)
+ */
+ struct GNUNET_PeerIdentity target;
+
+ /**
+ * Where the packet came from
+ */
+ struct GNUNET_PeerIdentity source;
+
+// followed by payload
+
};
+GNUNET_NETWORK_STRUCT_END
/**
* Information kept for each message that is yet to
/**
* dll next
*/
- struct PendingMessage * next;
+ struct PendingMessage *next;
+
/**
* dll prev
*/
- struct PendingMessage * prev;
+ struct PendingMessage *prev;
/**
* The pending message
/**
* Cls for transmit_cont
*/
- void * transmit_cont_cls;
+ void *transmit_cont_cls;
/**
* Timeout value for the pending message.
};
+
/**
* Queue for acks to send for fragments recived
*/
/**
* next ack in the ack send queue
*/
- struct AckSendQueue * next;
+ struct AckSendQueue *next;
+
/**
* previous ack in the ack send queue
*/
- struct AckSendQueue * prev;
+ struct AckSendQueue *prev;
+
/**
* pointer to the session this ack belongs to
*/
- struct MacEndpoint * endpoint;
+ struct MacEndpoint *endpoint;
+
/**
* ID of message, to distinguish between the messages, picked randomly.
*/
uint32_t message_id;
/**
- * msg to send
- */
- struct GNUNET_MessageHeader * hdr;
- /**
- * pointer to the ieee wlan header
+ * pointer to the radiotap header with the ACK Message.
*/
- struct ieee80211_frame * ieeewlanheader;
- /**
- * pointer to the radiotap header
- */
- struct Radiotap_Send * radioHeader;
+ const struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage *radioHeader;
};
-/**
- * Session infos gathered from a messages
- */
-
-struct Session_light
-{
- /**
- * the session this message belongs to
- */
- struct Session * session;
- /**
- * peer mac address
- */
- struct MacAddress addr;
-
- /**
- * mac endpoint
- */
- struct MacEndpoint * macendpoint;
-};
/**
* Session handle for connections.
* Message currently pending for transmission
* to this peer, if any. head
*/
- struct PendingMessage * pending_message_head;
+ struct PendingMessage *pending_message_head;
/**
* Message currently pending for transmission
* to this peer, if any. tail
*/
- struct PendingMessage * pending_message_tail;
+ struct PendingMessage *pending_message_tail;
/**
* To whom are we talking to (set to our identity
/**
* Last activity on this connection. Used to select preferred
- * connection.
+ * connection and timeout
*/
struct GNUNET_TIME_Absolute last_activity;
+ /**
+ * Timeout task.
+ */
+ GNUNET_SCHEDULER_TaskIdentifier timeout_task;
+
/**
* peer connection
*/
- struct MacEndpoint * mac;
+ struct MacEndpoint *mac;
/**
* count of messages in the fragment out queue for this session
* Pointer to the global plugin struct.
*/
struct Plugin *plugin;
+
/**
* Struct to hold the session reachable over this mac; head
*/
- struct Sessionqueue * sessions_head;
+ struct Sessionqueue *sessions_head;
+
/**
* Struct to hold the session reachable over this mac; tail
*/
- struct Sessionqueue * sessions_tail;
+ struct Sessionqueue *sessions_tail;
+
/**
* Messages currently sending
* to a peer, if any.
*/
- struct FragmentMessage * sending_messages_head;
+ struct FragmentMessage *sending_messages_head;
/**
* Messages currently sending
* to a peer (tail), if any.
*/
- struct FragmentMessage * sending_messages_tail;
+ struct FragmentMessage *sending_messages_tail;
+
/**
* dll next
*/
struct MacEndpoint *next;
+
/**
* dll prev
*/
/**
* peer mac address
*/
- struct MacAddress addr;
+ struct GNUNET_TRANSPORT_WLAN_MacAddress addr;
/**
* Defrag context for this mac endpoint
*/
- struct GNUNET_DEFRAGMENT_Context * defrag;
+ struct GNUNET_DEFRAGMENT_Context *defrag;
/**
* count of messages in the fragment out queue for this mac endpoint
*/
-
int fragment_messages_out_count;
- //TODO DOXIGEN
+ //TODO DOXYGEN
uint8_t rate;
uint16_t tx_power;
uint8_t antenna;
* Acks received
*/
int acks;
+
+ /**
+ * Last activity on this endpoint. Used to select preferred
+ * connection.
+ */
+ struct GNUNET_TIME_Absolute last_activity;
+
+ /**
+ * Timeout task.
+ */
+ GNUNET_SCHEDULER_TaskIdentifier timeout_task;
};
/**
* Struct for Messages in the fragment queue
*/
-
struct FragmentMessage
{
/**
* Session this message belongs to
*/
-
struct Session *session;
/**
*/
struct FragmentMessage *prev;
- /**
- * Timeout value for the pending message.
- */
- struct GNUNET_TIME_Absolute timeout;
-
/**
* Fragmentation context
*/
- struct GNUNET_FRAGMENT_Context * fragcontext;
+ struct GNUNET_FRAGMENT_Context *fragcontext;
/**
- * Fragment to send
+ * Timeout value for the message.
*/
- char * frag;
+ struct GNUNET_TIME_Absolute timeout;
/**
- * size of message
+ * Timeout task.
*/
- size_t size;
+ GNUNET_SCHEDULER_TaskIdentifier timeout_task;
- /**
- * pointer to the ieee wlan header
- */
- struct ieee80211_frame * ieeewlanheader;
/**
* pointer to the radiotap header
*/
- struct Radiotap_Send * radioHeader;
+ struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage *radioHeader;
};
+
static void
-do_transmit(void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
+do_transmit (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
+
+
static void
-free_session(struct Plugin * plugin, struct Sessionqueue * queue,
- int do_free_macendpoint);
+free_session (struct Plugin *plugin, struct Sessionqueue *queue,
+ int do_free_macendpoint);
+
+
static struct MacEndpoint *
-create_macendpoint(struct Plugin *plugin, const struct MacAddress *addr);
+create_macendpoint (struct Plugin *plugin, const struct GNUNET_TRANSPORT_WLAN_MacAddress *addr);
+
+
+static void
+finish_sending (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
+
/**
* Generates a nice hexdump of a memory area.
* \param mem pointer to memory to dump
* \param length how many bytes to dump
*/
-void
-hexdump(void *mem, unsigned length)
+static void
+hexdump (const void *mem, unsigned length)
{
char line[80];
- char *src = (char*) mem;
+ char *src = (char *) mem;
- printf(
- "dumping %u bytes from %p\r\n"
- " 0 1 2 3 4 5 6 7 8 9 A B C D E F 0123456789ABCDEF\r\n",
- length, src);
+ printf ("dumping %u bytes from %p\r\n"
+ " 0 1 2 3 4 5 6 7 8 9 A B C D E F 0123456789ABCDEF\r\n",
+ length, src);
unsigned i;
int j;
for (i = 0; i < length; i += 16, src += 16)
- {
- char *t = line;
+ {
+ char *t = line;
- t += sprintf(t, "%04x: ", i);
- for (j = 0; j < 16; j++)
- {
- if (i + j < length)
- t += sprintf(t, "%02X", src[j] & 0xff);
- else
- t += sprintf(t, " ");
- t += sprintf(t, j % 2 ? " " : "-");
- }
+ t += sprintf (t, "%04x: ", i);
+ for (j = 0; j < 16; j++)
+ {
+ if (i + j < length)
+ t += sprintf (t, "%02X", src[j] & 0xff);
+ else
+ t += sprintf (t, " ");
- t += sprintf(t, " ");
- for (j = 0; j < 16; j++)
- {
- if (i + j < length)
- {
- if (isprint((unsigned char)src[j]))
- t += sprintf(t, "%c", src[j]);
- else
- t += sprintf(t, ".");
- }
- else
- {
- t += sprintf(t, " ");
- }
- }
+ t += sprintf (t, (j % 2) ? " " : "-");
+ }
- t += sprintf(t, "\r\n");
- printf("%s", line);
+ t += sprintf (t, " ");
+ for (j = 0; j < 16; j++)
+ {
+ if (i + j < length)
+ {
+ if (isprint ((unsigned char) src[j]))
+ t += sprintf (t, "%c", src[j]);
+ else
+ t += sprintf (t, ".");
+ }
+ else
+ {
+ t += sprintf (t, " ");
+ }
}
+
+ t += sprintf (t, "\r\n");
+ printf ("%s", line);
+ }
}
+
/**
* Function to find a MacEndpoint with a specific mac addr
* @param plugin pointer to the plugin struct
* @return
*/
static struct MacEndpoint *
-get_macendpoint(struct Plugin *plugin, const struct MacAddress *addr,
- int create_new)
+get_macendpoint (struct Plugin *plugin, const struct GNUNET_TRANSPORT_WLAN_MacAddress *addr,
+ int create_new)
{
- struct MacEndpoint * queue = plugin->mac_head;
+ struct MacEndpoint *queue = plugin->mac_head;
+
while (queue != NULL)
- {
- GNUNET_assert (queue->sessions_head != NULL);
- if (memcmp(addr, &queue->addr, sizeof(struct MacAddress)) == 0)
- return queue; /* session found */
- queue = queue->next;
- }
+ {
+ //GNUNET_assert (queue->sessions_head != NULL);
+ if (memcmp (addr, &queue->addr, sizeof (struct GNUNET_TRANSPORT_WLAN_MacAddress)) == 0)
+ return queue; /* session found */
+ queue = queue->next;
+ }
if (create_new == GNUNET_YES)
- {
- return create_macendpoint(plugin, addr);
- }
+ {
+ return create_macendpoint (plugin, addr);
+ }
else
- {
- return NULL;
- }
-
+ {
+ return NULL;
+ }
}
+
+
/**
- * search for a session with the addr and peer id
+ * search for a session with the macendpoint and peer id
*
* @param plugin pointer to the plugin struct
- * @param addr pointer to the mac address of the peer
+ * @param endpoint pointer to the mac endpoint of the peer
* @param peer pointer to the peerid
* @return returns the session
*/
static struct Session *
-search_session(struct Plugin *plugin, const struct MacEndpoint * endpoint,
- const struct GNUNET_PeerIdentity * peer)
+search_session (struct Plugin *plugin, const struct MacEndpoint *endpoint,
+ const struct GNUNET_PeerIdentity *peer)
{
- GNUNET_assert(endpoint != NULL);
- struct Sessionqueue * queue = endpoint->sessions_head;
+ GNUNET_assert (endpoint != NULL);
+ struct Sessionqueue *queue = endpoint->sessions_head;
while (queue != NULL)
- {
- GNUNET_assert (queue->content != NULL);
- if (memcmp(peer, &queue->content->target,
- sizeof(struct GNUNET_PeerIdentity)) == 0)
- return queue->content; /* session found */
- queue = queue->next;
- }
+ {
+ GNUNET_assert (queue->content != NULL);
+ if (memcmp
+ (peer, &queue->content->target,
+ sizeof (struct GNUNET_PeerIdentity)) == 0)
+ return queue->content; /* session found */
+ queue = queue->next;
+ }
return NULL;
}
* @param addrlen length of the address
* @return string representing the same address
*/
-static const char*
-wlan_plugin_address_to_string(void *cls, const void *addr, size_t addrlen)
+static const char *
+wlan_plugin_address_to_string (void *cls, const void *addr, size_t addrlen)
{
static char ret[40];
- const struct MacAddress *mac;
+ const struct GNUNET_TRANSPORT_WLAN_MacAddress *mac;
- if (addrlen != sizeof(struct MacAddress))
- {
- GNUNET_break (0);
- return NULL;
- }
+ if (addrlen != sizeof (struct GNUNET_TRANSPORT_WLAN_MacAddress))
+ {
+ GNUNET_break (0);
+ return NULL;
+ }
mac = addr;
- GNUNET_snprintf(ret, sizeof(ret), "%s Mac-Address %X:%X:%X:%X:%X:%X",
- PROTOCOL_PREFIX, mac->mac[0], mac->mac[1], mac->mac[2], mac->mac[3],
- mac->mac[4], mac->mac[5]);
+ GNUNET_snprintf (ret, sizeof (ret), "%s Mac-Address %X:%X:%X:%X:%X:%X",
+ PROTOCOL_PREFIX, mac->mac[0], mac->mac[1], mac->mac[2],
+ mac->mac[3], mac->mac[4], mac->mac[5]);
+
return ret;
}
+/**
+ * Function for the scheduler if a session times out
+ * @param cls pointer to the Sessionqueue
+ * @param tc pointer to the GNUNET_SCHEDULER_TaskContext
+ */
+static void
+session_timeout (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ struct Sessionqueue *queue = cls;
+
+ GNUNET_assert (queue != NULL);
+ GNUNET_assert (queue->content != NULL);
+ queue->content->timeout_task = GNUNET_SCHEDULER_NO_TASK;
+ if (tc->reason == GNUNET_SCHEDULER_REASON_SHUTDOWN)
+ {
+ return;
+ }
+ if (GNUNET_TIME_absolute_get_remaining
+ (GNUNET_TIME_absolute_add
+ (queue->content->last_activity, SESSION_TIMEOUT)).rel_value == 0)
+ {
+
+ GNUNET_assert (queue->content->mac != NULL);
+ GNUNET_assert (queue->content->mac->plugin != NULL);
+ GNUNET_STATISTICS_update (queue->content->mac->plugin->env->stats,
+ _("# wlan session timeouts"), 1, GNUNET_NO);
+ free_session (queue->content->mac->plugin, queue, GNUNET_YES);
+ }
+ else
+ {
+ queue->content->timeout_task =
+ GNUNET_SCHEDULER_add_delayed (SESSION_TIMEOUT, &session_timeout, queue);
+ }
+}
+
/**
* create a new session
*
* @param plugin pointer to the plugin struct
- * @param addr pointer to the mac endpoint of the peer
+ * @param endpoint pointer to the mac endpoint of the peer
+ * @param peer peer identity to use for this session
* @return returns the session
*/
-
static struct Session *
-create_session(struct Plugin *plugin, struct MacEndpoint * endpoint,
- const struct GNUNET_PeerIdentity * peer)
+create_session (struct Plugin *plugin, struct MacEndpoint *endpoint,
+ const struct GNUNET_PeerIdentity *peer)
{
- GNUNET_assert(endpoint != NULL);
- struct Sessionqueue * queue = GNUNET_malloc (sizeof (struct Sessionqueue));
+ GNUNET_assert (endpoint != NULL);
+ GNUNET_assert (plugin != NULL);
+ GNUNET_STATISTICS_update (plugin->env->stats, _("# wlan session created"), 1,
+ GNUNET_NO);
+ struct Sessionqueue *queue =
+ GNUNET_malloc (sizeof (struct Sessionqueue) + sizeof (struct Session));
- GNUNET_CONTAINER_DLL_insert_tail(endpoint->sessions_head, endpoint->sessions_tail, queue);
+ GNUNET_CONTAINER_DLL_insert_tail (endpoint->sessions_head,
+ endpoint->sessions_tail, queue);
- queue->content = GNUNET_malloc (sizeof (struct Session));
+ queue->content = (struct Session *) &queue[1];
queue->content->mac = endpoint;
- memcpy(&(queue->content->target), peer, sizeof(struct GNUNET_PeerIdentity));
-
-#if DEBUG_wlan
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "New session %p with endpoint %p: %s\n",
- queue->content, endpoint,
- wlan_plugin_address_to_string(NULL, endpoint->addr.mac, 6));
-#endif
-
+ queue->content->target = *peer;
+ queue->content->last_activity = GNUNET_TIME_absolute_get ();
+ queue->content->timeout_task =
+ GNUNET_SCHEDULER_add_delayed (SESSION_TIMEOUT, &session_timeout, queue);
+
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "New session %p with endpoint %p: %s\n", queue->content,
+ endpoint, wlan_plugin_address_to_string (NULL,
+ endpoint->addr.mac,
+ 6));
return queue->content;
}
* @return returns the session
*/
static struct Session *
-get_session(struct Plugin *plugin, const struct MacAddress *addr,
- const struct GNUNET_PeerIdentity * peer)
+get_session (struct Plugin *plugin, const struct GNUNET_TRANSPORT_WLAN_MacAddress *addr,
+ const struct GNUNET_PeerIdentity *peer)
{
- struct MacEndpoint * mac;
- mac = get_macendpoint(plugin, addr, GNUNET_YES);
- struct Session * session = search_session(plugin, mac, peer);
+ struct MacEndpoint *mac;
+
+ mac = get_macendpoint (plugin, addr, GNUNET_YES);
+ struct Session *session = search_session (plugin, mac, peer);
if (session != NULL)
return session;
- return create_session(plugin, mac, peer);
+ return create_session (plugin, mac, peer);
}
/**
* @param session pointer to the session to add
*/
static void
-queue_session(struct Plugin *plugin, struct Session * session)
+queue_session (struct Plugin *plugin, struct Session *session)
{
- struct Sessionqueue * queue = plugin->pending_Sessions_head;
+ struct Sessionqueue *queue = plugin->pending_Sessions_head;
if (session->pending_message_head != NULL)
+ {
+ while (queue != NULL)
{
- while (queue != NULL)
- {
- // content is never NULL
- GNUNET_assert (queue->content != NULL);
- // is session already in queue?
- if (session == queue->content)
- {
- return;
- }
- // try next
- queue = queue->next;
- }
+ // content is never NULL
+ GNUNET_assert (queue->content != NULL);
+ // is session already in queue?
+ if (session == queue->content)
+ {
+ return;
+ }
+ // try next
+ queue = queue->next;
+ }
- // Session is not in the queue
+ // Session is not in the queue
- queue = GNUNET_malloc (sizeof (struct Sessionqueue));
- queue->content = session;
+ queue = GNUNET_malloc (sizeof (struct Sessionqueue));
+ queue->content = session;
- //insert at the tail
- GNUNET_CONTAINER_DLL_insert_tail(plugin->pending_Sessions_head,
- plugin->pending_Sessions_tail, queue);
- plugin->pendingsessions++;
- }
+ //insert at the tail
+ GNUNET_CONTAINER_DLL_insert_tail (plugin->pending_Sessions_head,
+ plugin->pending_Sessions_tail, queue);
+ plugin->pendingsessions++;
+ GNUNET_STATISTICS_set (plugin->env->stats, _("# wlan pending sessions"),
+ plugin->pendingsessions, GNUNET_NO);
+ }
}
* @param tc GNUNET_SCHEDULER_TaskContext pointer
*/
static void
-delay_fragment_task(void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+delay_fragment_task (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
{
- struct Plugin * plugin = cls;
+ struct Plugin *plugin = cls;
+
plugin->server_write_delay_task = GNUNET_SCHEDULER_NO_TASK;
if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
// GNUNET_TIME_UNIT_FOREVER_REL is needed to clean up old msg
if (plugin->server_write_task == GNUNET_SCHEDULER_NO_TASK)
- {
- plugin->server_write_task = GNUNET_SCHEDULER_add_write_file(
- GNUNET_TIME_UNIT_FOREVER_REL, plugin->server_stdin_handle,
- &do_transmit, plugin);
- }
+ {
+ plugin->server_write_task =
+ GNUNET_SCHEDULER_add_write_file (GNUNET_TIME_UNIT_FOREVER_REL,
+ plugin->server_stdin_handle,
+ &do_transmit, plugin);
+ }
}
/**
* Function to calculate the time of the next periodic "hello-beacon"
* @param plugin pointer to the plugin struct
*/
-
static void
-set_next_beacon_time(struct Plugin * const plugin)
+set_next_beacon_time (struct Plugin *const plugin)
{
//under 10 known peers: once a second
if (plugin->mac_count < 10)
- {
- plugin->beacon_time = GNUNET_TIME_absolute_add(
- GNUNET_TIME_absolute_get(),
- GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS,
- HALLO_BEACON_SCALING_FACTOR));
- }
+ {
+ plugin->beacon_time =
+ GNUNET_TIME_absolute_add (GNUNET_TIME_absolute_get (),
+ GNUNET_TIME_relative_multiply
+ (GNUNET_TIME_UNIT_SECONDS,
+ HELLO_BEACON_SCALING_FACTOR));
+ }
//under 30 known peers: every 10 seconds
else if (plugin->mac_count < 30)
- {
- plugin->beacon_time = GNUNET_TIME_absolute_add(
- GNUNET_TIME_absolute_get(),
- GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS,
- 10 * HALLO_BEACON_SCALING_FACTOR));
- }
+ {
+ plugin->beacon_time =
+ GNUNET_TIME_absolute_add (GNUNET_TIME_absolute_get (),
+ GNUNET_TIME_relative_multiply
+ (GNUNET_TIME_UNIT_SECONDS,
+ 10 * HELLO_BEACON_SCALING_FACTOR));
+ }
//over 30 known peers: once a minute
else
- {
- plugin->beacon_time = GNUNET_TIME_absolute_add(
- GNUNET_TIME_absolute_get(),
- GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_MINUTES,
- HALLO_BEACON_SCALING_FACTOR));
- }
+ {
+ plugin->beacon_time =
+ GNUNET_TIME_absolute_add (GNUNET_TIME_absolute_get (),
+ GNUNET_TIME_relative_multiply
+ (GNUNET_TIME_UNIT_MINUTES,
+ HELLO_BEACON_SCALING_FACTOR));
+ }
}
+
/**
* Function to set the timer for the next timeout of the fragment queue
* @param plugin the handle to the plugin struct
*/
-
static void
-set_next_send(struct Plugin * const plugin)
+set_next_send (struct Plugin *plugin)
{
struct GNUNET_TIME_Relative next_send;
+ //abort if helper is not running
+ if (plugin->helper_is_running == GNUNET_NO)
+ {
+ return;
+ }
+
//cancel old task
if (plugin->server_write_delay_task != GNUNET_SCHEDULER_NO_TASK)
- {
- GNUNET_SCHEDULER_cancel(plugin->server_write_delay_task);
- plugin->server_write_delay_task = GNUNET_SCHEDULER_NO_TASK;
- }
+ {
+ GNUNET_SCHEDULER_cancel (plugin->server_write_delay_task);
+ plugin->server_write_delay_task = GNUNET_SCHEDULER_NO_TASK;
+ }
//check if some acks are in the queue
if (plugin->ack_send_queue_head != NULL)
- {
- next_send = GNUNET_TIME_UNIT_ZERO;
- }
+ {
+ next_send = GNUNET_TIME_UNIT_ZERO;
+ }
//check if there are some fragments in the queue
else if (plugin->sending_messages_head != NULL)
+ {
+ next_send = GNUNET_TIME_UNIT_ZERO;
+ }
+ else
+ {
+ next_send = GNUNET_TIME_absolute_get_remaining (plugin->beacon_time);
+ }
+
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Next packet is send in: %u\n", next_send.rel_value);
+ if (next_send.rel_value == GNUNET_TIME_UNIT_ZERO.rel_value)
+ {
+ if (plugin->server_write_task == GNUNET_SCHEDULER_NO_TASK)
{
- next_send = GNUNET_TIME_UNIT_ZERO;
+ plugin->server_write_task =
+ GNUNET_SCHEDULER_add_write_file (GNUNET_TIME_UNIT_FOREVER_REL,
+ plugin->server_stdin_handle,
+ &do_transmit, plugin);
}
+ }
else
+ {
+ if (plugin->server_write_delay_task == GNUNET_SCHEDULER_NO_TASK)
{
- next_send = GNUNET_TIME_absolute_get_remaining(plugin->beacon_time);
+ plugin->server_write_delay_task =
+ GNUNET_SCHEDULER_add_delayed (next_send, &delay_fragment_task,
+ plugin);
}
-
-#if DEBUG_wlan
-
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Next packet is send in: %u\n",
- next_send.rel_value);
-
-#endif
-
- if (next_send.rel_value == GNUNET_TIME_UNIT_ZERO.rel_value)
- {
- if (plugin->server_write_task == GNUNET_SCHEDULER_NO_TASK)
- {
- plugin->server_write_task = GNUNET_SCHEDULER_add_write_file(
- GNUNET_TIME_UNIT_FOREVER_REL, plugin->server_stdin_handle,
- &do_transmit, plugin);
- }
- }
- else
- {
- if (plugin->server_write_delay_task == GNUNET_SCHEDULER_NO_TASK)
- {
- plugin->server_write_delay_task = GNUNET_SCHEDULER_add_delayed(
- next_send, &delay_fragment_task, plugin);
- }
- }
-}
+ }
+}
/**
* Function to get the next queued Session, removes the session from the queue
* @return pointer to the session found, returns NULL if there is now session in the queue
*/
static struct Session *
-get_next_queue_session(struct Plugin * plugin)
+get_next_queue_session (struct Plugin *plugin)
{
- struct Session * session;
- struct Sessionqueue * sessionqueue;
- struct Sessionqueue * sessionqueue_alt;
- struct PendingMessage * pm;
+ struct Session *session;
+ struct Sessionqueue *sessionqueue;
+ struct Sessionqueue *sessionqueue_alt;
+ struct PendingMessage *pm;
+
sessionqueue = plugin->pending_Sessions_head;
while (sessionqueue != NULL)
- {
- session = sessionqueue->content;
+ {
+ session = sessionqueue->content;
- GNUNET_assert(session != NULL);
- pm = session->pending_message_head;
+ GNUNET_assert (session != NULL);
+ pm = session->pending_message_head;
-#if DEBUG_wlan
- if (pm == NULL)
- {
- GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
- "pending message is empty, should not happen. session %p\n",
- session);
- }
-#endif
+ if (pm == NULL)
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, PLUGIN_LOG_NAME,
+ "pending message is empty, should not happen. session %p\n",
+ session);
+ sessionqueue_alt = sessionqueue;
+ sessionqueue = sessionqueue->next;
+ plugin->pendingsessions--;
+ GNUNET_STATISTICS_set (plugin->env->stats, _("# wlan pending sessions"),
+ plugin->pendingsessions, GNUNET_NO);
+ GNUNET_CONTAINER_DLL_remove (plugin->pending_Sessions_head,
+ plugin->pending_Sessions_tail,
+ sessionqueue_alt);
+
+ GNUNET_free (sessionqueue_alt);
+ continue;
- GNUNET_assert(pm != NULL);
+ }
- //check for message timeout
- if (GNUNET_TIME_absolute_get_remaining(pm->timeout).rel_value > 0)
- {
- //check if session has no message in the fragment queue
- if ((session->mac->fragment_messages_out_count
- < FRAGMENT_QUEUE_MESSAGES_OUT_PER_MACENDPOINT)
- && (session->fragment_messages_out_count
- < FRAGMENT_QUEUE_MESSAGES_OUT_PER_SESSION))
- {
- plugin->pendingsessions--;
- GNUNET_CONTAINER_DLL_remove (plugin->pending_Sessions_head,
- plugin->pending_Sessions_tail, sessionqueue);
- GNUNET_free(sessionqueue);
-
- return session;
- }
- else
- {
- sessionqueue = sessionqueue->next;
- }
- }
+ //check for message timeout
+ if (GNUNET_TIME_absolute_get_remaining (pm->timeout).rel_value > 0)
+ {
+ //check if session has no message in the fragment queue
+ if ((session->mac->fragment_messages_out_count <
+ FRAGMENT_QUEUE_MESSAGES_OUT_PER_MACENDPOINT) &&
+ (session->fragment_messages_out_count <
+ FRAGMENT_QUEUE_MESSAGES_OUT_PER_SESSION))
+ {
+ plugin->pendingsessions--;
+ GNUNET_STATISTICS_set (plugin->env->stats, _("# wlan pending sessions"),
+ plugin->pendingsessions, GNUNET_NO);
+ GNUNET_CONTAINER_DLL_remove (plugin->pending_Sessions_head,
+ plugin->pending_Sessions_tail,
+ sessionqueue);
+ GNUNET_free (sessionqueue);
+
+ return session;
+ }
else
- {
- GNUNET_CONTAINER_DLL_remove(session->pending_message_head, session->pending_message_tail, pm);
-
- //call the cont func that it did not work
- if (pm->transmit_cont != NULL)
- pm->transmit_cont(pm->transmit_cont_cls, &(session->target),
- GNUNET_SYSERR);
- GNUNET_free(pm->msg);
- GNUNET_free(pm);
-
- if (session->pending_message_head == NULL)
- {
- sessionqueue_alt = sessionqueue;
- sessionqueue = sessionqueue->next;
- plugin->pendingsessions--;
- GNUNET_CONTAINER_DLL_remove (plugin->pending_Sessions_head,
- plugin->pending_Sessions_tail, sessionqueue_alt);
-
- GNUNET_free(sessionqueue_alt);
- }
- }
+ {
+ sessionqueue = sessionqueue->next;
+ }
+ }
+ else
+ {
+ GNUNET_CONTAINER_DLL_remove (session->pending_message_head,
+ session->pending_message_tail, pm);
+
+ //call the cont func that it did not work
+ if (pm->transmit_cont != NULL)
+ pm->transmit_cont (pm->transmit_cont_cls, &(session->target),
+ GNUNET_SYSERR);
+ GNUNET_free (pm->msg);
+ GNUNET_free (pm);
+ if (session->pending_message_head == NULL)
+ {
+ sessionqueue_alt = sessionqueue;
+ sessionqueue = sessionqueue->next;
+ plugin->pendingsessions--;
+ GNUNET_STATISTICS_set (plugin->env->stats, _("# wlan pending sessions"),
+ plugin->pendingsessions, GNUNET_NO);
+ GNUNET_CONTAINER_DLL_remove (plugin->pending_Sessions_head,
+ plugin->pending_Sessions_tail,
+ sessionqueue_alt);
+
+ GNUNET_free (sessionqueue_alt);
+ }
}
+
+ }
return NULL;
}
* @param fm message to free
*/
static void
-free_fragment_message(struct Plugin * plugin, struct FragmentMessage * fm)
+free_fragment_message (struct Plugin *plugin, struct FragmentMessage *fm)
{
- struct Session * session = fm->session;
- struct MacEndpoint * endpoint = session->mac;
- struct FragmentMessage_queue * fmq;
- struct FragmentMessage_queue * fmq_next;
-
- if (fm != NULL)
+ struct Session *session = fm->session;
+ struct MacEndpoint *endpoint = session->mac;
+ struct FragmentMessage_queue *fmq;
+ struct FragmentMessage_queue *fmq_next;
+
+ fmq = plugin->sending_messages_head;
+ while (fmq != NULL)
+ {
+ fmq_next = fmq->next;
+ if (fmq->content == fm)
{
- fmq = plugin->sending_messages_head;
- while (fmq != NULL)
- {
- fmq_next = fmq->next;
- if (fmq->content == fm)
- {
- GNUNET_CONTAINER_DLL_remove(plugin->sending_messages_head,plugin->sending_messages_tail, fmq);
- GNUNET_free(fmq);
- }
- fmq = fmq_next;
- }
-
- (session->mac->fragment_messages_out_count)--;
- session->fragment_messages_out_count--;
- plugin->pending_Fragment_Messages--;
- GNUNET_CONTAINER_DLL_remove(endpoint->sending_messages_head,endpoint->sending_messages_tail, fm);
- GNUNET_FRAGMENT_context_destroy(fm->fragcontext);
- GNUNET_free(fm);
-
- queue_session(plugin, session);
-#if DEBUG_wlan
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "Free pending fragment messages %p, session %p\n", fm, session);
-#endif
+ GNUNET_CONTAINER_DLL_remove (plugin->sending_messages_head,
+ plugin->sending_messages_tail, fmq);
+ GNUNET_free (fmq);
}
+ fmq = fmq_next;
+ }
+ session->mac->fragment_messages_out_count--;
+ session->fragment_messages_out_count--;
+ plugin->pending_Fragment_Messages--;
+ GNUNET_STATISTICS_set (plugin->env->stats, _("# wlan pending fragments"),
+ plugin->pending_Fragment_Messages, GNUNET_NO);
+ GNUNET_CONTAINER_DLL_remove (endpoint->sending_messages_head,
+ endpoint->sending_messages_tail, fm);
+ GNUNET_FRAGMENT_context_destroy (fm->fragcontext);
+ if (fm->timeout_task != GNUNET_SCHEDULER_NO_TASK)
+ {
+ GNUNET_SCHEDULER_cancel (fm->timeout_task);
+ fm->timeout_task = GNUNET_SCHEDULER_NO_TASK;
+ }
+ GNUNET_free (fm);
+ queue_session (plugin, session);
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Free pending fragment messages %p, session %p\n", fm,
+ session);
}
+
/**
* function to fill the radiotap header
+ *
* @param plugin pointer to the plugin struct
* @param endpoint pointer to the endpoint
* @param header pointer to the radiotap header
+ * @param size total message size
* @return GNUNET_YES at success
*/
static int
-getRadiotapHeader(struct Plugin * plugin, struct MacEndpoint * endpoint,
- struct Radiotap_Send * header)
+getRadiotapHeader (struct Plugin *plugin, struct MacEndpoint *endpoint,
+ struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage *header,
+ uint16_t size)
{
-
+ header->header.type = ntohs (GNUNET_MESSAGE_TYPE_WLAN_DATA_TO_HELPER);
+ header->header.size = ntohs (size);
if (endpoint != NULL)
- {
- header->rate = endpoint->rate;
- header->tx_power = endpoint->tx_power;
- header->antenna = endpoint->antenna;
- }
+ {
+ header->rate = endpoint->rate;
+ header->tx_power = endpoint->tx_power;
+ header->antenna = endpoint->antenna;
+ }
else
- {
- header->rate = 255;
- header->tx_power = 0;
- header->antenna = 0;
- }
+ {
+ header->rate = 255;
+ header->tx_power = 0;
+ header->antenna = 0;
+ }
return GNUNET_YES;
}
+
/**
* function to generate the wlan hardware header for one packet
* @param Header address to write the header to
* @param to_mac_addr address of the recipient
* @param plugin pointer to the plugin struct
+ * @param size size of the whole packet, needed to calculate the time to send the packet
+ * FIXME: 'size' is initialized inconsistently throughout the code (sometimes payload, sometimes everything)
* @return GNUNET_YES if there was no error
*/
static int
-getWlanHeader(struct ieee80211_frame * Header,
- const struct MacAddress * to_mac_addr, struct Plugin * plugin,
- unsigned int size)
+getWlanHeader (struct GNUNET_TRANSPORT_WLAN_Ieee80211Frame *Header,
+ const struct GNUNET_TRANSPORT_WLAN_MacAddress *to_mac_addr, struct Plugin *plugin,
+ unsigned int size)
{
- uint16_t * tmp16;
const int rate = 11000000;
- Header->i_fc[0] = IEEE80211_FC0_TYPE_DATA;
- Header->i_fc[1] = 0x00;
- memcpy(&Header->i_addr3, &mac_bssid, sizeof(mac_bssid));
- memcpy(&Header->i_addr2, plugin->mac_address.mac, sizeof(plugin->mac_address));
- memcpy(&Header->i_addr1, to_mac_addr, sizeof(struct MacAddress));
-
- tmp16 = (uint16_t*) Header->i_dur;
- *tmp16 = (uint16_t) htole16((size * 1000000) / rate + 290);
-
-#if DEBUG_wlan_ip_udp_packets_on_air
- uint crc = 0;
- uint16_t * x;
- int count;
- Header->ip.ip_dst.s_addr = *((uint32_t*) &to_mac_addr->mac[2]);
- Header->ip.ip_src.s_addr = *((uint32_t*) &plugin->mac_address.mac[2]);
- Header->ip.ip_v = 4;
- Header->ip.ip_hl = 5;
- Header->ip.ip_p = 17;
- Header->ip.ip_ttl = 1;
- Header->ip.ip_len = htons(size + 8);
- Header->ip.ip_sum = 0;
- x =(uint16_t *) &Header->ip;
- count = sizeof(struct iph);
- while (count > 1)
- {
- /* This is the inner loop */
- crc += (unsigned short) * x++;
- count -= 2;
- }
- /* Add left-over byte, if any */
- if( count > 0 )
- crc += * (unsigned char *) x;
- crc = (crc & 0xffff) + (crc >> 16);
- Header->ip.ip_sum = htons(~ (unsigned short) crc);
- Header->llc[0] = 6;
- Header->llc[1] = 6;
- Header->udp.len = htons(size - sizeof(struct ieee80211_frame));
+ Header->frame_control = htons (IEEE80211_FC0_TYPE_DATA);
+ Header->addr1 = *to_mac_addr;
+ Header->addr2 = plugin->mac_address;
+ Header->addr3 = mac_bssid_gnunet;
+ Header->duration = GNUNET_htole16 ((size * 1000000) / rate + 290);
+ Header->sequence_control = 0; // FIXME?
+ Header->llc[0] = WLAN_LLC_DSAP_FIELD;
+ Header->llc[1] = WLAN_LLC_SSAP_FIELD;
+ Header->llc[2] = 0; // FIXME?
+ Header->llc[3] = 0; // FIXME?
+ return GNUNET_YES;
+}
-#endif
- return GNUNET_YES;
+/**
+ * function to add a fragment of a message to send
+ * @param cls FragmentMessage this message belongs to
+ * @param hdr pointer to the start of the message
+ */
+static void
+add_message_for_send (void *cls, const struct GNUNET_MessageHeader *hdr)
+{
+ struct FragmentMessage *fm = cls;
+ struct FragmentMessage_queue *fmqueue;
+ struct MacEndpoint *endpoint;
+ struct Plugin *plugin;
+ uint16_t size;
+
+ GNUNET_assert (cls != NULL);
+ endpoint = fm->session->mac;
+ plugin = endpoint->plugin;
+
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Adding fragment of message %p to send, session %p, endpoint %p, type %u\n",
+ fm, fm->session, endpoint, hdr->type);
+ size = sizeof (struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage) + ntohs (hdr->size);
+ fm->radioHeader = GNUNET_malloc (size);
+ getRadiotapHeader (plugin, fm->session->mac, fm->radioHeader, size);
+ getWlanHeader (&fm->radioHeader->frame, &(fm->session->mac->addr), plugin,
+ size);
+ memcpy (&fm->radioHeader[1], hdr, ntohs (hdr->size));
+ // FIXME: yucky allocation structure!
+ fmqueue = GNUNET_malloc (sizeof (struct FragmentMessage_queue));
+ fmqueue->content = fm;
+ GNUNET_CONTAINER_DLL_insert_tail (plugin->sending_messages_head,
+ plugin->sending_messages_tail, fmqueue);
+ set_next_send (plugin);
}
+
/**
- * 32bit CRC
- *
- * @param msgbuf pointer tor the data
- * @param msgbuf_size size of the data
+ * We have been notified that gnunet-helper-transport-wlan has written something to stdout.
+ * Handle the output, then reschedule this function to be called again once
+ * more is available.
*
- * @return 32bit crc value
+ * @param cls the plugin handle
+ * @param tc the scheduling context
*/
-
-uint32_t
-getcrc32(const char *msgbuf, size_t msgbuf_size)
+static void
+wlan_plugin_helper_read (void *cls,
+ const struct GNUNET_SCHEDULER_TaskContext *tc)
{
+ struct Plugin *plugin = cls;
+
+ plugin->server_read_task = GNUNET_SCHEDULER_NO_TASK;
+
+ if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
+ return;
+
+ char mybuf[WLAN_MTU + sizeof (struct GNUNET_MessageHeader)];
+ ssize_t bytes;
- return GNUNET_CRYPTO_crc32_n(msgbuf, msgbuf_size);;
+ bytes =
+ GNUNET_DISK_file_read (plugin->server_stdout_handle, mybuf,
+ sizeof (mybuf));
+ if (bytes <= 0)
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ _
+ ("Finished reading from gnunet-helper-transport-wlan stdout with code: %d\n"),
+ bytes);
+ return;
+ }
+ GNUNET_SERVER_mst_receive (plugin->suid_tokenizer, NULL, mybuf, bytes,
+ GNUNET_NO, GNUNET_NO);
+
+ GNUNET_assert (plugin->server_read_task == GNUNET_SCHEDULER_NO_TASK);
+ plugin->server_read_task =
+ GNUNET_SCHEDULER_add_read_file (GNUNET_TIME_UNIT_FOREVER_REL,
+ plugin->server_stdout_handle,
+ &wlan_plugin_helper_read, plugin);
}
/**
- * 16bit CRC
- *
- * @param msgbuf pointer tor the data
- * @param msgbuf_size size of the data
+ * Start the gnunet-helper-transport-wlan process.
*
- * @return 16bit crc value
+ * @param plugin the transport plugin
+ * @return GNUNET_YES if process was started, GNUNET_SYSERR on error
*/
-
-uint16_t
-getcrc16(const char *msgbuf, size_t msgbuf_size)
+static int
+wlan_transport_start_wlan_helper (struct Plugin *plugin)
{
- //TODO calc some crc
- return 0;
+ const char *filenamehw = "gnunet-helper-transport-wlan";
+ const char *filenameloopback = "gnunet-helper-transport-wlan-dummy";
+ char *absolute_filename = NULL;
+
+ if (plugin->helper_is_running == GNUNET_YES)
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "wlan_transport_start_wlan_helper not needed, helper already running!");
+ return GNUNET_YES;
+ }
+
+ plugin->server_stdout = GNUNET_DISK_pipe (GNUNET_YES, GNUNET_YES, GNUNET_NO, GNUNET_YES);
+ if (plugin->server_stdout == NULL)
+ return GNUNET_SYSERR;
+
+ plugin->server_stdin = GNUNET_DISK_pipe (GNUNET_YES, GNUNET_YES, GNUNET_YES, GNUNET_NO);
+ if (plugin->server_stdin == NULL)
+ return GNUNET_SYSERR;
+
+ if ((plugin->testmode == 1) || (plugin->testmode == 2))
+ {
+ if (GNUNET_OS_check_helper_binary (filenameloopback) == GNUNET_YES)
+ {
+ absolute_filename = GNUNET_strdup (filenameloopback);
+ }
+ else
+ {
+ char cwd[FILENAME_MAX];
+
+ GNUNET_assert (getcwd (cwd, sizeof (cwd)) != NULL);
+
+ GNUNET_asprintf (&absolute_filename, "%s%s%s", cwd, DIR_SEPARATOR_STR,
+ filenameloopback);
+
+ if (GNUNET_DISK_file_test (filenameloopback) != GNUNET_YES)
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, PLUGIN_LOG_NAME,
+ "Helper `%s' not found! %i\n", absolute_filename);
+ GNUNET_break (0);
+ }
+ }
+ }
+
+ /* Start the server process */
+
+ if (plugin->testmode == 0)
+ {
+
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Starting gnunet-helper-transport-wlan process cmd: %s %s %i\n",
+ filenamehw, plugin->interface, plugin->testmode);
+ if (GNUNET_OS_check_helper_binary (filenamehw) == GNUNET_YES)
+ {
+ plugin->server_proc =
+ GNUNET_OS_start_process (GNUNET_NO, plugin->server_stdin, plugin->server_stdout,
+ filenamehw, filenamehw, plugin->interface,
+ NULL);
+ }
+ else if (GNUNET_OS_check_helper_binary (filenamehw) == GNUNET_NO)
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, PLUGIN_LOG_NAME,
+ "gnunet-helper-transport-wlan is not suid, please change it or look at the doku\n");
+ GNUNET_break (0);
+ }
+ else
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, PLUGIN_LOG_NAME,
+ "gnunet-helper-transport-wlan not found, please look if it exists and is the $PATH variable!\n");
+ GNUNET_break (0);
+ }
+
+ }
+ else if (plugin->testmode == 1)
+ {
+
+ GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, PLUGIN_LOG_NAME,
+ "Starting gnunet-helper-transport-wlan-dummy loopback 1 process cmd: %s %s %i\n",
+ absolute_filename, plugin->interface, plugin->testmode);
+ plugin->server_proc =
+ GNUNET_OS_start_process (GNUNET_NO, plugin->server_stdin, plugin->server_stdout,
+ absolute_filename, absolute_filename, "1",
+ NULL);
+ if (plugin->server_proc == NULL)
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, PLUGIN_LOG_NAME,
+ "`%s' not found, please look if it exists and is in the $PATH variable!\n",
+ absolute_filename);
+ GNUNET_break (0);
+ }
+ }
+ else if (plugin->testmode == 2)
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, PLUGIN_LOG_NAME,
+ "Starting gnunet-helper-transport-wlan-dummy loopback 2 process cmd: %s %s %i\n",
+ absolute_filename, plugin->interface, plugin->testmode);
+ plugin->server_proc =
+ GNUNET_OS_start_process (GNUNET_NO, plugin->server_stdin, plugin->server_stdout,
+ absolute_filename, absolute_filename, "2",
+ NULL);
+ if (plugin->server_proc == NULL)
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, PLUGIN_LOG_NAME,
+ "`%s' not found, please look if it exists and is in the $PATH variable!\n",
+ absolute_filename);
+ GNUNET_break (0);
+ }
+ }
+ if (absolute_filename != NULL)
+ GNUNET_free (absolute_filename);
+ if (plugin->server_proc == NULL)
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Failed to start gnunet-helper-transport-wlan process\n");
+ return GNUNET_SYSERR;
+ }
+
+
+
+ /* Close the write end of the read pipe */
+ GNUNET_DISK_pipe_close_end (plugin->server_stdout,
+ GNUNET_DISK_PIPE_END_WRITE);
+
+ /* Close the read end of the write pipe */
+ GNUNET_DISK_pipe_close_end (plugin->server_stdin, GNUNET_DISK_PIPE_END_READ);
+
+ plugin->server_stdout_handle =
+ GNUNET_DISK_pipe_handle (plugin->server_stdout,
+ GNUNET_DISK_PIPE_END_READ);
+ plugin->server_stdin_handle =
+ GNUNET_DISK_pipe_handle (plugin->server_stdin,
+ GNUNET_DISK_PIPE_END_WRITE);
+
+ GNUNET_assert (plugin->server_read_task == GNUNET_SCHEDULER_NO_TASK);
+
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Adding server_read_task for the gnunet-helper-transport-wlan\n");
+ plugin->server_read_task =
+ GNUNET_SCHEDULER_add_read_file (GNUNET_TIME_UNIT_FOREVER_REL,
+ plugin->server_stdout_handle,
+ &wlan_plugin_helper_read, plugin);
+
+ plugin->helper_is_running = GNUNET_YES;
+ return GNUNET_YES;
}
/**
- * function to add a fragment of a message to send
- * @param cls FragmentMessage this message belongs to
- * @param hdr pointer to the start of the message
+ * Stops the gnunet-helper-transport-wlan process.
+ *
+ * @param plugin the transport plugin
+ * @return GNUNET_YES if process was started, GNUNET_SYSERR on error
*/
-
-void
-add_message_for_send(void *cls, const struct GNUNET_MessageHeader *hdr)
+static int
+wlan_transport_stop_wlan_helper (struct Plugin *plugin)
{
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Stoping WLAN helper process\n");
- struct FragmentMessage * fm = cls;
- struct FragmentMessage_queue * fmqueue;
-
- GNUNET_assert(cls != NULL);
- GNUNET_assert(fm->frag == NULL);
- struct MacEndpoint * endpoint = fm->session->mac;
- struct Plugin * plugin = endpoint->plugin;
- struct GNUNET_MessageHeader * msgheader;
- struct GNUNET_MessageHeader * msgheader2;
- uint16_t size;
+ if (plugin->helper_is_running == GNUNET_NO)
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "wlan_transport_stop_wlan_helper not needed, helper already stopped!");
+ return GNUNET_YES;
+ }
-#if DEBUG_wlan_retransmission
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "Adding fragment of message %p to send, session %p, endpoint %p\n", fm,
- fm->session, endpoint);
-#endif
+ if (plugin->server_write_delay_task != GNUNET_SCHEDULER_NO_TASK)
+ {
+ GNUNET_SCHEDULER_cancel (plugin->server_write_delay_task);
+ plugin->server_write_delay_task = GNUNET_SCHEDULER_NO_TASK;
+ }
- size = sizeof(struct GNUNET_MessageHeader) + sizeof(struct Radiotap_Send)
- + sizeof(struct ieee80211_frame) + ntohs(hdr->size);
- fm->frag = GNUNET_malloc(size);
- fm->size = size;
+ if (plugin->server_write_task != GNUNET_SCHEDULER_NO_TASK)
+ {
+ GNUNET_SCHEDULER_cancel (plugin->server_write_task);
+ plugin->server_write_task = GNUNET_SCHEDULER_NO_TASK;
+ }
- msgheader = (struct GNUNET_MessageHeader *) fm->frag;
- msgheader->size = htons(size);
- msgheader->type = htons(GNUNET_MESSAGE_TYPE_WLAN_HELPER_DATA);
+ if (plugin->server_read_task != GNUNET_SCHEDULER_NO_TASK)
+ {
+ GNUNET_SCHEDULER_cancel (plugin->server_read_task);
+ plugin->server_read_task = GNUNET_SCHEDULER_NO_TASK;
+ }
- fm->radioHeader = (struct Radiotap_Send*) &msgheader[1];
- fm->ieeewlanheader = (struct ieee80211_frame*) &fm->radioHeader[1];
- msgheader2 = (struct GNUNET_MessageHeader*) &fm->ieeewlanheader[1];
- memcpy(msgheader2, hdr, ntohs(hdr->size));
+ GNUNET_DISK_pipe_close (plugin->server_stdout);
+ GNUNET_DISK_pipe_close (plugin->server_stdin);
+ GNUNET_OS_process_kill (plugin->server_proc, SIGKILL);
+ GNUNET_OS_process_wait (plugin->server_proc);
+ GNUNET_OS_process_close (plugin->server_proc);
- fmqueue = GNUNET_malloc(sizeof(struct FragmentMessage_queue));
- fmqueue->content = fm;
+ plugin->helper_is_running = GNUNET_NO;
- GNUNET_CONTAINER_DLL_insert_tail(plugin->sending_messages_head,
- plugin->sending_messages_tail, fmqueue);
- set_next_send(plugin);
+ return GNUNET_YES;
}
/**
- * function to send a hallo beacon
- * @param plugin pointer to the plugin struct
+ * function for delayed restart of the helper process
+ * @param cls Finish_send struct if message should be finished
+ * @param tc TaskContext
*/
static void
-send_hello_beacon(struct Plugin * plugin)
+delay_restart_helper (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
{
+ struct Finish_send *finish = cls;
+ struct Plugin *plugin;
-#if DEBUG_wlan
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Sending hello beacon\n");
-#endif
+ plugin = finish->plugin;
- uint16_t size;
- ssize_t bytes;
- uint16_t hallo_size;
- struct GNUNET_MessageHeader * msgheader;
- struct ieee80211_frame * ieeewlanheader;
- struct Radiotap_Send * radioHeader;
- struct GNUNET_MessageHeader * msgheader2;
+ plugin->server_write_task = GNUNET_SCHEDULER_NO_TASK;
+ if (0 != (GNUNET_SCHEDULER_REASON_SHUTDOWN & tc->reason))
+ {
+ GNUNET_free_non_null (finish->msgstart);
+ GNUNET_free (finish);
+ return;
+ }
+
+ wlan_transport_start_wlan_helper (plugin);
+
+ if (finish->size != 0)
+ {
+ plugin->server_write_task =
+ GNUNET_SCHEDULER_add_write_file (GNUNET_TIME_UNIT_FOREVER_REL,
+ plugin->server_stdin_handle,
+ &finish_sending, finish);
+ }
+ else
+ {
+ set_next_send (plugin);
+ GNUNET_free_non_null (finish->msgstart);
+ GNUNET_free (finish);
+ }
+
+}
- hallo_size = GNUNET_HELLO_size(*(plugin->env->our_hello));
- GNUNET_assert(sizeof(struct WlanHeader) + hallo_size <= WLAN_MTU);
- size = sizeof(struct GNUNET_MessageHeader) + sizeof(struct Radiotap_Send)
- + sizeof(struct ieee80211_frame) + sizeof(struct GNUNET_MessageHeader)
- + hallo_size;
+/**
+ * Function to restart the helper
+ * @param plugin pointer to the global plugin struct
+ * @param finish pointer to the Finish_send struct to finish
+ */
+static void
+restart_helper (struct Plugin *plugin, struct Finish_send *finish)
+{
+ static struct GNUNET_TIME_Relative next_try = { 1000 };
+ GNUNET_assert (finish != NULL);
- msgheader = GNUNET_malloc(size);
- msgheader->size = htons(size);
- msgheader->type = htons(GNUNET_MESSAGE_TYPE_WLAN_HELPER_DATA);
+ wlan_transport_stop_wlan_helper (plugin);
+ plugin->server_write_task =
+ GNUNET_SCHEDULER_add_delayed (next_try, &delay_restart_helper, finish);
+ GNUNET_TIME_relative_multiply (next_try, HELPER_RESTART_SCALING_FACTOR);
- radioHeader = (struct Radiotap_Send*) &msgheader[1];
- getRadiotapHeader(plugin, NULL, radioHeader);
- ieeewlanheader = (struct ieee80211_frame*) &radioHeader[1];
- getWlanHeader(ieeewlanheader, &bc_all_mac, plugin, size);
+}
- msgheader2 = (struct GNUNET_MessageHeader*) &ieeewlanheader[1];
- msgheader2->size = htons(
- GNUNET_HELLO_size(*(plugin->env->our_hello))
- + sizeof(struct GNUNET_MessageHeader));
+/**
+ * function to finish a sending if not all could have been writen befor
+ * @param cls pointer to the Finish_send struct
+ * @param tc TaskContext
+ */
+static void
+finish_sending (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ struct Finish_send *finish = cls;
+ struct Plugin *plugin;
+ ssize_t bytes;
- msgheader2->type = htons(GNUNET_MESSAGE_TYPE_WLAN_ADVERTISEMENT);
- memcpy(&msgheader2[1], *plugin->env->our_hello, hallo_size);
+ plugin = finish->plugin;
+ plugin->server_write_task = GNUNET_SCHEDULER_NO_TASK;
- bytes = GNUNET_DISK_file_write(plugin->server_stdin_handle, msgheader, size);
+ if (0 != (GNUNET_SCHEDULER_REASON_SHUTDOWN & tc->reason))
+ {
+ GNUNET_free (finish->msgstart);
+ GNUNET_free (finish);
+ return;
+ }
+ bytes =
+ GNUNET_DISK_file_write (plugin->server_stdin_handle,
+ finish->head_of_next_write, finish->size);
- if (bytes == GNUNET_SYSERR)
+ if (bytes != finish->size)
+ {
+ if (bytes != GNUNET_SYSERR)
{
- GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
- _("Error writing to wlan healper. errno == %d, ERROR: %s\n"),
- errno, strerror(errno));
-
+ finish->head_of_next_write += bytes;
+ finish->size -= bytes;
+ plugin->server_write_task =
+ GNUNET_SCHEDULER_add_write_file (GNUNET_TIME_UNIT_FOREVER_REL,
+ plugin->server_stdin_handle,
+ &finish_sending, finish);
}
- GNUNET_assert(bytes != GNUNET_SYSERR);
- GNUNET_assert(bytes == size);
- GNUNET_free(msgheader);
+ else
+ {
+ restart_helper (plugin, finish);
+ }
+ }
+ else
+ {
+ GNUNET_free (finish->msgstart);
+ GNUNET_free (finish);
+ set_next_send (plugin);
+ }
+}
+
- set_next_beacon_time(plugin);
- set_next_send(plugin);
+/**
+ * function to send a hello beacon
+ * @param plugin pointer to the plugin struct
+ */
+static void
+send_hello_beacon (struct Plugin *plugin)
+{
+ uint16_t size;
+ ssize_t bytes;
+ uint16_t hello_size;
+ struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage *radioHeader;
+ const struct GNUNET_MessageHeader *hello;
+ struct Finish_send *finish;
+
+ GNUNET_assert (plugin != NULL);
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Sending hello beacon\n");
+ GNUNET_STATISTICS_update (plugin->env->stats, _("# wlan hello beacons send"),
+ 1, GNUNET_NO);
+ hello = plugin->env->get_our_hello ();
+ hello_size = GNUNET_HELLO_size ((struct GNUNET_HELLO_Message *) hello);
+ GNUNET_assert (sizeof (struct WlanHeader) + hello_size <= WLAN_MTU);
+
+ size = sizeof (struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage) + hello_size;
+ radioHeader = GNUNET_malloc (size);
+ getRadiotapHeader (plugin, NULL, radioHeader, size);
+ getWlanHeader (&radioHeader->frame, &bc_all_mac, plugin, size);
+ memcpy (&radioHeader[1], hello, hello_size);
+ bytes = GNUNET_DISK_file_write (plugin->server_stdin_handle, radioHeader, size);
+ GNUNET_free (radioHeader);
+ if (bytes == GNUNET_SYSERR)
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, PLUGIN_LOG_NAME,
+ _
+ ("Error writing to wlan helper. errno == %d, ERROR: %s\n"),
+ errno, strerror (errno));
+ finish = GNUNET_malloc (sizeof (struct Finish_send));
+ finish->plugin = plugin;
+ finish->head_of_next_write = NULL;
+ finish->size = 0;
+ finish->msgstart = NULL;
+ restart_helper (plugin, finish);
+ set_next_beacon_time (plugin);
+ }
+ else
+ {
+ GNUNET_assert (bytes == size);
+ set_next_beacon_time (plugin);
+ set_next_send (plugin);
+ }
}
+
/**
* function to add an ack to send it for a received fragment
+ *
* @param cls MacEndpoint this ack belongs to
* @param msg_id id of the message
* @param hdr pointer to the hdr where the ack is stored
- *
*/
-
static void
-add_ack_for_send(void *cls, uint32_t msg_id,
- const struct GNUNET_MessageHeader *hdr)
+add_ack_for_send (void *cls, uint32_t msg_id,
+ const struct GNUNET_MessageHeader *hdr)
{
-
- struct AckSendQueue * ack;
-
- GNUNET_assert(cls != NULL);
- struct MacEndpoint * endpoint = cls;
- struct Plugin * plugin = endpoint->plugin;
- struct GNUNET_MessageHeader * msgheader;
- struct GNUNET_MessageHeader * msgheader2;
+ struct MacEndpoint *endpoint = cls;
+ struct Plugin *plugin = endpoint->plugin;
+ struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage* radioHeader;
+ struct AckSendQueue *ack;
+ struct GNUNET_MessageHeader *msgheader;
uint16_t size;
- size = sizeof(struct GNUNET_MessageHeader) + sizeof(struct Radiotap_Send)
- + sizeof(struct ieee80211_frame) + ntohs(hdr->size)
- + sizeof(struct AckSendQueue);
-
- ack = GNUNET_malloc(size);
+ GNUNET_assert (endpoint != NULL);
+ size = sizeof (struct AckSendQueue) + sizeof (struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage) + ntohs (hdr->size);
+ ack = GNUNET_malloc (size);
ack->message_id = msg_id;
ack->endpoint = endpoint;
+ radioHeader = (struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage*) &ack[1];
+ ack->radioHeader = radioHeader;
+ getRadiotapHeader (plugin, ack->endpoint, radioHeader, size - sizeof (struct AckSendQueue));
+ size = ntohs (hdr->size);
+ getWlanHeader (&radioHeader->frame,
+ &ack->endpoint->addr,
+ plugin,
+ size);
+ msgheader = (struct GNUNET_MessageHeader *) &radioHeader[1];
+ memcpy (msgheader, hdr, size);
+ GNUNET_CONTAINER_DLL_insert_tail (plugin->ack_send_queue_head,
+ plugin->ack_send_queue_tail, ack);
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Adding ack with message id %u to send, AckSendQueue %p, endpoint %p\n",
+ msg_id, ack, endpoint);
+ set_next_send (plugin);
+}
- size = sizeof(struct GNUNET_MessageHeader) + sizeof(struct Radiotap_Send)
- + sizeof(struct ieee80211_frame) + ntohs(hdr->size);
-
- msgheader = (struct GNUNET_MessageHeader *) &ack[1];
- ack->hdr = (struct GNUNET_MessageHeader *) &ack[1];
- msgheader->size = htons(size);
- msgheader->type = htons(GNUNET_MESSAGE_TYPE_WLAN_HELPER_DATA);
-
- ack->radioHeader = (struct Radiotap_Send*) &msgheader[1];
- ack->ieeewlanheader = (struct ieee80211_frame*) &(ack->radioHeader)[1];
- msgheader2 = (struct GNUNET_MessageHeader*) &(ack->ieeewlanheader)[1];
- memcpy(msgheader2, hdr, ntohs(hdr->size));
-
- GNUNET_CONTAINER_DLL_insert_tail(plugin->ack_send_queue_head,
- plugin->ack_send_queue_tail, ack);
-#if DEBUG_wlan_retransmission
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "Adding ack with message id %u to send, AckSendQueue %p, endpoint %p\n",
- msg_id, ack, endpoint);
-#endif
+/**
+ * Function for the scheduler if a FragmentMessage times out
+ * @param cls pointer to the FragmentMessage
+ * @param tc pointer to the GNUNET_SCHEDULER_TaskContext
+ */
+static void
+fragmentmessage_timeout (void *cls,
+ const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ struct FragmentMessage *fm = cls;
- set_next_send(plugin);
+ GNUNET_assert (fm != NULL);
+ fm->timeout_task = GNUNET_SCHEDULER_NO_TASK;
+ if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
+ return;
+ free_fragment_message (fm->session->mac->plugin, fm);
}
/**
*/
static void
-check_fragment_queue(struct Plugin * plugin)
+check_fragment_queue (struct Plugin *plugin)
{
- struct Session * session;
- struct FragmentMessage * fm;
+ struct Session *session;
+ struct FragmentMessage *fm;
struct GNUNET_PeerIdentity pid;
- struct PendingMessage * pm;
+ struct PendingMessage *pm;
if (plugin->pending_Fragment_Messages < FRAGMENT_QUEUE_SIZE)
+ {
+ session = get_next_queue_session (plugin);
+ if (session != NULL)
{
- session = get_next_queue_session(plugin);
- if (session != NULL)
- {
- pm = session->pending_message_head;
- GNUNET_CONTAINER_DLL_remove(session->pending_message_head, session->pending_message_tail, pm);
- session->mac->fragment_messages_out_count++;
- session->fragment_messages_out_count++;
- plugin->pending_Fragment_Messages++;
- GNUNET_assert(pm != NULL);
-
- fm = GNUNET_malloc(sizeof(struct FragmentMessage));
- fm->session = session;
- fm->timeout.abs_value = pm->timeout.abs_value;
- fm->frag = NULL;
- fm->fragcontext = GNUNET_FRAGMENT_context_create(plugin->env->stats,
- WLAN_MTU, &plugin->tracker, GNUNET_TIME_UNIT_SECONDS,
- &(pm->msg->header), &add_message_for_send,
- fm);
- GNUNET_CONTAINER_DLL_insert_tail(session->mac->sending_messages_head,session->mac->sending_messages_tail,fm);
-
- if (pm->transmit_cont != NULL)
- {
- pid = session->target;
- pm->transmit_cont(pm->transmit_cont_cls, &pid, GNUNET_OK);
-#if DEBUG_wlan
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "called pm->transmit_cont for %p\n", session);
-#endif
- }
- else
- {
-#if DEBUG_wlan
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "no pm->transmit_cont for %p\n", session);
-#endif
- }
- GNUNET_free(pm);
+ pm = session->pending_message_head;
+ GNUNET_assert (pm != NULL);
+ GNUNET_CONTAINER_DLL_remove (session->pending_message_head,
+ session->pending_message_tail, pm);
+ session->mac->fragment_messages_out_count++;
+ session->fragment_messages_out_count++;
+ plugin->pending_Fragment_Messages++;
+ GNUNET_STATISTICS_set (plugin->env->stats, _("# wlan pending fragments"),
+ plugin->pending_Fragment_Messages, GNUNET_NO);
+
+ fm = GNUNET_malloc (sizeof (struct FragmentMessage));
+ fm->session = session;
+ fm->timeout.abs_value = pm->timeout.abs_value;
+ fm->fragcontext =
+ GNUNET_FRAGMENT_context_create (plugin->env->stats, WLAN_MTU,
+ &plugin->tracker,
+ GNUNET_TIME_UNIT_SECONDS,
+ &(pm->msg->header),
+ &add_message_for_send, fm);
+ fm->timeout_task =
+ GNUNET_SCHEDULER_add_delayed (GNUNET_TIME_absolute_get_remaining
+ (fm->timeout), fragmentmessage_timeout,
+ fm);
+ GNUNET_CONTAINER_DLL_insert_tail (session->mac->sending_messages_head,
+ session->mac->sending_messages_tail,
+ fm);
+
+ if (pm->transmit_cont != NULL)
+ {
+ pid = session->target;
+ pm->transmit_cont (pm->transmit_cont_cls, &pid, GNUNET_OK);
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "called pm->transmit_cont for %p\n", session);
+ }
+ else
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "no pm->transmit_cont for %p\n", session);
+ }
+ GNUNET_free (pm);
- if (session->pending_message_head != NULL)
- {
- //requeue session
- queue_session(plugin, session);
- }
+ if (session->pending_message_head != NULL)
+ {
+ //requeue session
+ queue_session (plugin, session);
+ }
- }
}
+ }
//check if timeout changed
- set_next_send(plugin);
+ set_next_send (plugin);
}
+
/**
* Function to send an ack, does not free the ack
* @param plugin pointer to the plugin
- * @param ack pointer to the ack to send
*/
static void
-send_ack(struct Plugin * plugin, struct AckSendQueue * ack)
+send_ack (struct Plugin *plugin)
{
-
ssize_t bytes;
-
-#if DEBUG_wlan
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "Sending ack for message_id %u for mac endpoint %p, size %u\n",
- ack->message_id, ack->endpoint,
- ntohs(ack->hdr->size) - sizeof(struct Radiotap_Send));
-#endif
-
- getRadiotapHeader(plugin, ack->endpoint, ack->radioHeader);
- getWlanHeader(ack->ieeewlanheader, &ack->endpoint->addr, plugin,
- ntohs(ack->hdr->size));
-
- bytes = GNUNET_DISK_file_write(plugin->server_stdin_handle, ack->hdr,
- ntohs(ack->hdr->size));
+ struct AckSendQueue *ack;
+ struct Finish_send *finish;
+
+ GNUNET_assert (plugin != NULL);
+ ack = plugin->ack_send_queue_head;
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Sending ack for message_id %u for mac endpoint %p, size %u\n",
+ ack->message_id, ack->endpoint,
+ ntohs (ack->radioHeader->header.size));
+ GNUNET_STATISTICS_update (plugin->env->stats, _("# wlan acks send"), 1,
+ GNUNET_NO);
+ bytes =
+ GNUNET_DISK_file_write (plugin->server_stdin_handle, ack->radioHeader,
+ ntohs (ack->radioHeader->header.size));
if (bytes == GNUNET_SYSERR)
- {
- GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
- _("Error writing to wlan healper. errno == %d, ERROR: %s\n"),
- errno, strerror(errno));
-
- }
- GNUNET_assert(bytes != GNUNET_SYSERR);
- GNUNET_assert(bytes == ntohs(ack->hdr->size));
- set_next_send(plugin);
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, PLUGIN_LOG_NAME,
+ _
+ ("Error writing to wlan helper. errno == %d, ERROR: %s\n"),
+ errno, strerror (errno));
+ finish = GNUNET_malloc (sizeof (struct Finish_send));
+ finish->plugin = plugin;
+ finish->head_of_next_write = NULL;
+ finish->size = 0;
+ finish->msgstart = NULL;
+ restart_helper (plugin, finish);
+ return;
+ }
+ GNUNET_assert (bytes == ntohs (ack->radioHeader->header.size));
+ GNUNET_CONTAINER_DLL_remove (plugin->ack_send_queue_head,
+ plugin->ack_send_queue_tail, ack);
+ GNUNET_free (ack);
+ set_next_send (plugin);
}
-/**
- * function to finish a sending if not all could have been writen befor
- * @param cls pointer to the Finish_send struct
- * @param tc TaskContext
- */
-static void
-finish_sending(void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
- struct Finish_send * finish = cls;
- struct Plugin * plugin;
- ssize_t bytes;
-
- plugin = finish->plugin;
- plugin->server_write_task = GNUNET_SCHEDULER_NO_TASK;
-
- if (0 != (GNUNET_SCHEDULER_REASON_SHUTDOWN & tc->reason))
- {
- GNUNET_free (finish->msgstart);
- GNUNET_free (finish);
- return;
- }
- bytes = GNUNET_DISK_file_write(plugin->server_stdin_handle,
- finish->msgheader, finish->size);
- GNUNET_assert (bytes != GNUNET_SYSERR);
-
- if (bytes != finish->size)
- {
- finish->msgheader = finish->msgheader + bytes;
- finish->size = finish->size - bytes;
- plugin->server_write_task = GNUNET_SCHEDULER_add_write_file(
- GNUNET_TIME_UNIT_FOREVER_REL, plugin->server_stdin_handle,
- &finish_sending, finish);
- }
- else
- {
- GNUNET_free(finish->msgstart);
- GNUNET_free(finish);
- set_next_send(plugin);
- }
-}
/**
* Function called when wlan helper is ready to get some data
* @param tc GNUNET_SCHEDULER_TaskContext
*/
static void
-do_transmit(void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+do_transmit (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
{
- struct Plugin * plugin = cls;
+ struct Plugin *plugin = cls;
+ struct Session *session;
+ struct FragmentMessage *fm;
+ struct Finish_send *finish;
+ struct FragmentMessage_queue *fmq;
+ ssize_t bytes;
+ GNUNET_assert (plugin != NULL);
plugin->server_write_task = GNUNET_SCHEDULER_NO_TASK;
if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
return;
-
- struct Session * session;
- struct FragmentMessage * fm;
- struct Finish_send * finish;
- struct FragmentMessage_queue * fmq;
- struct AckSendQueue * ack;
- ssize_t bytes;
-
if (plugin->ack_send_queue_head != NULL)
- {
- ack = plugin->ack_send_queue_head;
- GNUNET_CONTAINER_DLL_remove(plugin->ack_send_queue_head,
- plugin->ack_send_queue_tail, ack);
- send_ack(plugin, ack);
- GNUNET_free(ack);
- return;
- }
-
+ {
+ send_ack (plugin);
+ return;
+ }
//test if a "hello-beacon" has to be send
- if (GNUNET_TIME_absolute_get_remaining(plugin->beacon_time).rel_value == 0)
+ if (GNUNET_TIME_absolute_get_remaining (plugin->beacon_time).rel_value == 0)
+ {
+ send_hello_beacon (plugin);
+ return;
+ }
+ if (NULL == plugin->sending_messages_head)
+ {
+ /* nothing to do right now, check when to go again */
+ set_next_send (plugin);
+ return;
+ }
+ GNUNET_STATISTICS_update (plugin->env->stats, _("# wlan fragments send"), 1,
+ GNUNET_NO);
+
+ fmq = plugin->sending_messages_head;
+ fm = fmq->content;
+ GNUNET_CONTAINER_DLL_remove (plugin->sending_messages_head,
+ plugin->sending_messages_tail, fmq);
+ GNUNET_free (fmq);
+
+ session = fm->session;
+ GNUNET_assert (session != NULL);
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Sending GNUNET_MESSAGE_TYPE_WLAN_FRAGMENT for fragment message %p, size: %u\n",
+ fm, ntohs (fm->radioHeader->header.size));
+ bytes =
+ GNUNET_DISK_file_write (plugin->server_stdin_handle,
+ fm->radioHeader,
+ ntohs (fm->radioHeader->header.size));
+ if (bytes != ntohs (fm->radioHeader->header.size))
+ {
+ finish = GNUNET_malloc (sizeof (struct Finish_send));
+ finish->plugin = plugin;
+ finish->msgstart = &fm->radioHeader->header;
+ GNUNET_assert (plugin->server_write_task == GNUNET_SCHEDULER_NO_TASK);
+ if (bytes == GNUNET_SYSERR)
{
- send_hello_beacon(plugin);
- return;
+ GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, PLUGIN_LOG_NAME,
+ _
+ ("Error writing to wlan helper. errno == %d, ERROR: %s\n"),
+ errno, strerror (errno));
+ finish->head_of_next_write = (char*) fm->radioHeader;
+ finish->size = ntohs (fm->radioHeader->header.size);
+ restart_helper (plugin, finish);
}
-
- if (plugin->sending_messages_head != NULL)
+ else
{
- fmq = plugin->sending_messages_head;
- fm = fmq->content;
- GNUNET_CONTAINER_DLL_remove(plugin->sending_messages_head,plugin->sending_messages_tail,fmq);
- GNUNET_free(fmq);
-
- session = fm->session;
- GNUNET_assert(session != NULL);
-
-#if DEBUG_wlan
- GNUNET_log(
- GNUNET_ERROR_TYPE_DEBUG,
- "Sending GNUNET_MESSAGE_TYPE_WLAN_FRAGMENT for fragment message %p, size: %u\n",
- fm, fm->size);
-#endif
-
- getRadiotapHeader(plugin, session->mac, fm->radioHeader);
- getWlanHeader(fm->ieeewlanheader, &(fm->session->mac->addr), plugin,
- fm->size);
-
- bytes = GNUNET_DISK_file_write(plugin->server_stdin_handle, fm->frag,
- fm->size);
- if (bytes == GNUNET_SYSERR)
- {
- GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
- _("Error writing to wlan healper. errno == %d, ERROR: %s\n"),
- errno, strerror(errno));
-
- }
- GNUNET_assert(bytes != GNUNET_SYSERR);
-
- if (bytes != fm->size)
- {
- finish = GNUNET_malloc(sizeof( struct Finish_send));
- finish->plugin = plugin;
- finish->msgheader = fm->frag + bytes;
- finish->size = fm->size - bytes;
- finish->msgstart = (struct GNUNET_MessageHeader *) fm->frag;
-
- GNUNET_assert(plugin->server_write_task == GNUNET_SCHEDULER_NO_TASK);
-
- plugin->server_write_task = GNUNET_SCHEDULER_add_write_file(
- GNUNET_TIME_UNIT_FOREVER_REL, plugin->server_stdin_handle,
- &finish_sending, finish);
- fm->frag = NULL;
- }
- else
- {
- GNUNET_free(fm->frag);
- fm->frag = NULL;
- set_next_send(plugin);
- }
- GNUNET_FRAGMENT_context_transmission_done (fm->fragcontext);
- return;
- }
-
- GNUNET_log(GNUNET_ERROR_TYPE_WARNING,
- "do_transmit did nothing, should not happen!\n");
+ finish->head_of_next_write = ((char*) fm->radioHeader) + bytes;
+ finish->size = ntohs (fm->radioHeader->header.size) - bytes;
+ plugin->server_write_task =
+ GNUNET_SCHEDULER_add_write_file (GNUNET_TIME_UNIT_FOREVER_REL,
+ plugin->server_stdin_handle,
+ &finish_sending, finish);
+ }
+ }
+ else
+ {
+ GNUNET_free (fm->radioHeader);
+ fm->radioHeader = NULL;
+ set_next_send (plugin);
+ }
+ GNUNET_FRAGMENT_context_transmission_done (fm->fragcontext);
}
+
/**
* Another peer has suggested an address for this
* peer and transport plugin. Check that this could be a valid
* and transport
*/
static int
-wlan_plugin_address_suggested(void *cls, const void *addr, size_t addrlen)
+wlan_plugin_address_suggested (void *cls, const void *addr, size_t addrlen)
{
//struct Plugin *plugin = cls;
/* check if the address is plausible; if so,
- add it to our list! */
+ * add it to our list! */
- GNUNET_assert(cls !=NULL);
+ GNUNET_assert (cls != NULL);
//FIXME mitm is not checked
//Mac Address has 6 bytes
if (addrlen == 6)
- {
- /* TODO check for bad addresses like multicast, broadcast, etc */
- return GNUNET_OK;
- }
-
+ {
+ /* TODO check for bad addresses like multicast, broadcast, etc */
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "wlan_plugin_address_suggested got good address, size %u!\n",
+ addrlen);
+ return GNUNET_OK;
+ }
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "wlan_plugin_address_suggested got bad address, size %u!\n",
+ addrlen);
return GNUNET_SYSERR;
}
+
+/**
+ * Creates a new outbound session the transport service will use to send data to the
+ * peer
+ *
+ * @param cls the plugin
+ * @param address the address
+ * @return the session or NULL of max connections exceeded
+ */
+
+static struct Session *
+wlan_plugin_get_session (void *cls,
+ const struct GNUNET_HELLO_Address *address)
+{
+ struct Plugin *plugin = cls;
+ struct Session * s = NULL;
+
+ GNUNET_assert (plugin != NULL);
+ GNUNET_assert (address != NULL);
+
+ if (GNUNET_OK == wlan_plugin_address_suggested (plugin,
+ address->address,
+ address->address_length))
+ {
+ s = get_session (plugin, address->address, &address->peer);
+ }
+ else
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, PLUGIN_LOG_NAME,
+ _("Wlan Address len %d is wrong\n"), address->address_length);
+ return s;
+ }
+
+ return s;
+}
+
/**
* Function that can be used by the transport service to transmit
- * a message using the plugin.
+ * a message using the plugin. Note that in the case of a
+ * peer disconnecting, the continuation MUST be called
+ * prior to the disconnect notification itself. This function
+ * will be called with this peer's HELLO message to initiate
+ * a fresh connection to another peer.
*
* @param cls closure
- * @param target who should receive this message
- * @param priority how important is the message
+ * @param session which session must be used
* @param msgbuf the message to transmit
* @param msgbuf_size number of bytes in 'msgbuf'
- * @param timeout when should we time out
- * @param session which session must be used (or NULL for "any")
- * @param addr the address to use (can be NULL if the plugin
- * is "on its own" (i.e. re-use existing TCP connection))
- * @param addrlen length of the address in bytes
- * @param force_address GNUNET_YES if the plugin MUST use the given address,
- * otherwise the plugin may use other addresses or
- * existing connections (if available)
+ * @param priority how important is the message (most plugins will
+ * ignore message priority and just FIFO)
+ * @param to how long to wait at most for the transmission (does not
+ * require plugins to discard the message after the timeout,
+ * just advisory for the desired delay; most plugins will ignore
+ * this as well)
* @param cont continuation to call once the message has
* been transmitted (or if the transport is ready
* for the next transmission call; or if the
- * peer disconnected...)
+ * peer disconnected...); can be NULL
* @param cont_cls closure for cont
* @return number of bytes used (on the physical network, with overheads);
* -1 on hard errors (i.e. address invalid); 0 is a legal value
* and does NOT mean that the message was not transmitted (DV)
*/
static ssize_t
-wlan_plugin_send(void *cls, const struct GNUNET_PeerIdentity * target,
- const char *msgbuf, size_t msgbuf_size, unsigned int priority,
- struct GNUNET_TIME_Relative timeout, struct Session *session,
- const void *addr, size_t addrlen, int force_address,
- GNUNET_TRANSPORT_TransmitContinuation cont, void *cont_cls)
+wlan_plugin_send (void *cls,
+ struct Session *session,
+ const char *msgbuf, size_t msgbuf_size,
+ unsigned int priority,
+ struct GNUNET_TIME_Relative to,
+ GNUNET_TRANSPORT_TransmitContinuation cont, void *cont_cls)
{
- struct Plugin * plugin = cls;
- struct PendingMessage * newmsg;
- struct WlanHeader * wlanheader;
-
- //check if msglen > 0
- GNUNET_assert(msgbuf_size > 0);
+ struct Plugin *plugin = cls;
+ struct PendingMessage *newmsg;
+ struct WlanHeader *wlanheader;
- //get session if needed
- if (session == NULL)
- {
- if (wlan_plugin_address_suggested(plugin, addr, addrlen) == GNUNET_OK)
- {
- session = get_session(plugin, addr, target);
- }
- else
- {
- GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
- _("Wlan Address len %d is wrong\n"), addrlen);
- return -1;
- }
- }
+ GNUNET_assert (plugin != NULL);
+ GNUNET_assert (session != NULL);
+ GNUNET_assert (msgbuf_size > 0);
//queue message:
//test if there is no other message in the "queue"
//FIXME: to many send requests
if (session->pending_message_head != NULL)
- {
- newmsg = session->pending_message_head;
- GNUNET_log(
- GNUNET_ERROR_TYPE_ERROR,
- "wlan_plugin_send: a pending message is already in the queue for this client\n remaining time to send this message is %u, queued fragment messages for this mac connection %u\n",
- GNUNET_TIME_absolute_get_remaining(newmsg->timeout).rel_value,
- session->mac->fragment_messages_out_count);
- }
-
- newmsg = GNUNET_malloc(sizeof(struct PendingMessage));
- newmsg->msg = GNUNET_malloc(msgbuf_size + sizeof(struct WlanHeader));
+ {
+ newmsg = session->pending_message_head;
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "wlan_plugin_send: a pending message is already in the queue for this client\n remaining time to send this message is %u, queued fragment messages for this mac connection %u\n",
+ GNUNET_TIME_absolute_get_remaining (newmsg->
+ timeout).rel_value,
+ session->mac->fragment_messages_out_count);
+ }
+
+ newmsg = GNUNET_malloc (sizeof (struct PendingMessage));
+ newmsg->msg = GNUNET_malloc (msgbuf_size + sizeof (struct WlanHeader));
wlanheader = newmsg->msg;
//copy msg to buffer, not fragmented / segmented yet, but with message header
- wlanheader->header.size = htons(msgbuf_size + sizeof(struct WlanHeader));
- wlanheader->header.type = htons(GNUNET_MESSAGE_TYPE_WLAN_DATA);
- memcpy(&(wlanheader->target), target, sizeof(struct GNUNET_PeerIdentity));
- memcpy(&(wlanheader->source), plugin->env->my_identity,
- sizeof(struct GNUNET_PeerIdentity));
+ wlanheader->header.size = htons (msgbuf_size + sizeof (struct WlanHeader));
+ wlanheader->header.type = htons (GNUNET_MESSAGE_TYPE_WLAN_DATA);
+ memcpy (&(wlanheader->target), &session->target, sizeof (struct GNUNET_PeerIdentity));
+ memcpy (&(wlanheader->source), plugin->env->my_identity,
+ sizeof (struct GNUNET_PeerIdentity));
wlanheader->crc = 0;
- memcpy(&wlanheader[1], msgbuf, msgbuf_size);
- wlanheader->crc = htonl(
- getcrc32((char*) wlanheader, msgbuf_size + sizeof(struct WlanHeader)));
- //GNUNET_log(GNUNET_ERROR_TYPE_INFO, "Wlan message Header crc: %u, %u\n",getcrc32((char*) wlanheader, msgbuf_size + sizeof(struct WlanHeader)), wlanheader->crc);
- //hexdump(newmsg->msg, msgbuf_size + sizeof(struct WlanHeader));
+ memcpy (&wlanheader[1], msgbuf, msgbuf_size);
+ wlanheader->crc =
+ htonl (GNUNET_CRYPTO_crc32_n
+ ((char *) wlanheader, msgbuf_size + sizeof (struct WlanHeader)));
newmsg->transmit_cont = cont;
newmsg->transmit_cont_cls = cont_cls;
- newmsg->timeout = GNUNET_TIME_relative_to_absolute(timeout);
+ newmsg->timeout = GNUNET_TIME_relative_to_absolute (to);
newmsg->timeout.abs_value = newmsg->timeout.abs_value - 500;
- newmsg->message_size = msgbuf_size + sizeof(struct WlanHeader);
+ newmsg->message_size = msgbuf_size + sizeof (struct WlanHeader);
- GNUNET_CONTAINER_DLL_insert_tail(session->pending_message_head, session->pending_message_tail, newmsg);
+ GNUNET_CONTAINER_DLL_insert_tail (session->pending_message_head,
+ session->pending_message_tail, newmsg);
-#if DEBUG_wlan
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "New message for %p with size (incl wlan header) %u added\n", session,
- newmsg->message_size);
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "New message for %p with size (incl wlan header) %u added\n",
+ session, newmsg->message_size);
+#if DEBUG_WLAN > 1
+ hexdump (msgbuf, GNUNET_MIN (msgbuf_size, 256));
#endif
-
//queue session
- queue_session(plugin, session);
+ queue_session (plugin, session);
- check_fragment_queue(plugin);
+ check_fragment_queue (plugin);
//FIXME not the correct size
return msgbuf_size;
-
}
+
/**
* function to free a mac endpoint
* @param plugin pointer to the plugin struct
- * @param endpoin pointer to the MacEndpoint to free
+ * @param endpoint pointer to the MacEndpoint to free
*/
static void
-free_macendpoint(struct Plugin * plugin, struct MacEndpoint * endpoin)
+free_macendpoint (struct Plugin *plugin, struct MacEndpoint *endpoint)
{
- struct Sessionqueue * sessions;
- struct Sessionqueue * sessions_next;
- GNUNET_assert(endpoin != NULL);
+ struct Sessionqueue *sessions;
+ struct Sessionqueue *sessions_next;
- sessions = endpoin->sessions_head;
- while (sessions != NULL)
- {
- sessions_next = sessions->next;
- free_session(plugin, sessions, GNUNET_NO);
- sessions = sessions_next;
- }
+ GNUNET_assert (endpoint != NULL);
- GNUNET_CONTAINER_DLL_remove(plugin->mac_head,plugin->mac_tail,endpoin);
- GNUNET_free(endpoin);
+ sessions = endpoint->sessions_head;
+ while (sessions != NULL)
+ {
+ sessions_next = sessions->next;
+ free_session (plugin, sessions, GNUNET_NO);
+ sessions = sessions_next;
+ }
+
+ GNUNET_CONTAINER_DLL_remove (plugin->mac_head, plugin->mac_tail, endpoint);
+ if (endpoint->timeout_task != GNUNET_SCHEDULER_NO_TASK)
+ {
+ GNUNET_SCHEDULER_cancel (endpoint->timeout_task);
+ endpoint->timeout_task = GNUNET_SCHEDULER_NO_TASK;
+ }
+ plugin->mac_count--;
+ GNUNET_STATISTICS_set (plugin->env->stats, _("# wlan mac endpoints"),
+ plugin->mac_count, GNUNET_NO);
+ GNUNET_free (endpoint);
}
* function to free a session
* @param plugin pointer to the plugin
* @param queue pointer to the sessionqueue element to free
- * @param free_macendpoint if GNUNET_YES and mac endpoint would be empty, free mac endpoint
+ * @param do_free_macendpoint if GNUNET_YES and mac endpoint would be empty, free mac endpoint
*/
static void
-free_session(struct Plugin * plugin, struct Sessionqueue * queue,
- int do_free_macendpoint)
+free_session (struct Plugin *plugin, struct Sessionqueue *queue,
+ int do_free_macendpoint)
{
- struct Sessionqueue * pendingsession;
- struct Sessionqueue * pendingsession_tmp;
- struct PendingMessage * pm;
- struct MacEndpoint * endpoint;
- struct FragmentMessage * fm;
- struct FragmentMessage * fmnext;
+ struct Sessionqueue *pendingsession;
+ struct Sessionqueue *pendingsession_tmp;
+ struct PendingMessage *pm;
+ struct MacEndpoint *endpoint;
+ struct FragmentMessage *fm;
+ struct FragmentMessage *fmnext;
int check = 0;
- GNUNET_assert(queue != NULL);
- GNUNET_assert(queue->content != NULL);
+ GNUNET_assert (plugin != NULL);
+ GNUNET_assert (queue != NULL);
+ GNUNET_assert (queue->content != NULL);
//session found
//is this session pending for send
pendingsession = plugin->pending_Sessions_head;
while (pendingsession != NULL)
+ {
+ pendingsession_tmp = pendingsession;
+ pendingsession = pendingsession->next;
+ GNUNET_assert (pendingsession_tmp->content != NULL);
+ if (pendingsession_tmp->content == queue->content)
{
- pendingsession_tmp = pendingsession->next;
- if (pendingsession->content == queue->content)
- {
- plugin->pendingsessions--;
- GNUNET_CONTAINER_DLL_remove (plugin->pending_Sessions_head,
- plugin->pending_Sessions_tail,
- pendingsession);
- GNUNET_free(pendingsession);
-
- GNUNET_assert (check == 0);
- check = 1;
- }
- pendingsession = pendingsession_tmp;
+ plugin->pendingsessions--;
+ GNUNET_STATISTICS_set (plugin->env->stats, _("# wlan pending sessions"),
+ plugin->pendingsessions, GNUNET_NO);
+ GNUNET_CONTAINER_DLL_remove (plugin->pending_Sessions_head,
+ plugin->pending_Sessions_tail,
+ pendingsession_tmp);
+ GNUNET_free (pendingsession_tmp);
+
+ GNUNET_assert (check == 0);
+ check = 1;
}
+ }
endpoint = queue->content->mac;
fm = endpoint->sending_messages_head;
while (fm != NULL)
- {
- fmnext = fm->next;
- if (fm->session == queue->content)
- {
- free_fragment_message(plugin, fm);
- }
- fm = fmnext;
- }
+ {
+ fmnext = fm->next;
+ if (fm->session == queue->content)
+ free_fragment_message (plugin, fm);
+ fm = fmnext;
+ }
// remove PendingMessage
pm = queue->content->pending_message_head;
while (pm != NULL)
- {
- GNUNET_CONTAINER_DLL_remove(queue->content->pending_message_head,queue->content->pending_message_tail,pm);
- GNUNET_free(pm->msg);
- GNUNET_free(pm);
- pm = queue->content->pending_message_head;
- }
-
- GNUNET_CONTAINER_DLL_remove(endpoint->sessions_head ,
- endpoint->sessions_tail,
- queue);
-
+ {
+ GNUNET_CONTAINER_DLL_remove (queue->content->pending_message_head,
+ queue->content->pending_message_tail, pm);
+ GNUNET_free (pm->msg);
+ GNUNET_free (pm);
+ pm = queue->content->pending_message_head;
+ }
+
+ GNUNET_CONTAINER_DLL_remove (endpoint->sessions_head, endpoint->sessions_tail,
+ queue);
+ //Check that no ohter session on this endpoint for this session exits
+ GNUNET_assert (search_session (plugin, endpoint, &queue->content->target) ==
+ NULL);
if (endpoint->sessions_head == NULL && do_free_macendpoint == GNUNET_YES)
- {
- free_macendpoint(plugin, endpoint);
- }
- GNUNET_free(queue->content);
- GNUNET_free(queue);
- check_fragment_queue(plugin);
+ {
+ free_macendpoint (plugin, endpoint);
+ //check if no endpoint with the same address exists
+ GNUNET_assert (get_macendpoint (plugin, &endpoint->addr, GNUNET_NO) ==
+ NULL);
+ }
+
+ if (queue->content->timeout_task != GNUNET_SCHEDULER_NO_TASK)
+ {
+ GNUNET_SCHEDULER_cancel (queue->content->timeout_task);
+ queue->content->timeout_task = GNUNET_SCHEDULER_NO_TASK;
+ }
+ GNUNET_free (queue);
+
+ check_fragment_queue (plugin);
}
/**
* @param target peer from which to disconnect
*/
static void
-wlan_plugin_disconnect(void *cls, const struct GNUNET_PeerIdentity *target)
+wlan_plugin_disconnect (void *cls, const struct GNUNET_PeerIdentity *target)
{
struct Plugin *plugin = cls;
- struct Sessionqueue * queue;
- struct Sessionqueue * queue_next;
- struct MacEndpoint * endpoint = plugin->mac_head;
- struct MacEndpoint * endpoint_next;
+ struct Sessionqueue *queue;
+ struct Sessionqueue *queue_next;
+ struct MacEndpoint *endpoint = plugin->mac_head;
+ struct MacEndpoint *endpoint_next;
+
// just look at all the session for the needed one
while (endpoint != NULL)
+ {
+ queue = endpoint->sessions_head;
+ endpoint_next = endpoint->next;
+ while (queue != NULL)
{
- queue = endpoint->sessions_head;
- endpoint_next = endpoint->next;
- while (queue != NULL)
- {
- // content is never NULL
- GNUNET_assert (queue->content != NULL);
- queue_next = queue->next;
- if (memcmp(target, &(queue->content->target),
- sizeof(struct GNUNET_PeerIdentity)) == 0)
- {
- free_session(plugin, queue, GNUNET_YES);
- }
- // try next
- queue = queue_next;
- }
- endpoint = endpoint_next;
+ // content is never NULL
+ GNUNET_assert (queue->content != NULL);
+ queue_next = queue->next;
+ if (memcmp
+ (target, &(queue->content->target),
+ sizeof (struct GNUNET_PeerIdentity)) == 0)
+ {
+ free_session (plugin, queue, GNUNET_YES);
+ }
+ // try next
+ queue = queue_next;
}
+ endpoint = endpoint_next;
+ }
}
/**
* @param asc_cls closure for asc
*/
static void
-wlan_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)
+wlan_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)
{
- char ret[92];
- const unsigned char * input;
+ char *ret;
+ const unsigned char *input;
//GNUNET_assert(cls !=NULL);
- if (addrlen != 6)
- {
- /* invalid address (MAC addresses have 6 bytes) */GNUNET_break (0);
- asc(asc_cls, NULL);
- return;
- }
- input = (const unsigned char*) addr;
- GNUNET_snprintf(ret, sizeof(ret),
- "%s Mac-Address %.2X:%.2X:%.2X:%.2X:%.2X:%.2X", PROTOCOL_PREFIX,
- input[0], input[1], input[2], input[3], input[4], input[5]);
- asc(asc_cls, ret);
+ if (addrlen != sizeof (struct GNUNET_TRANSPORT_WLAN_MacAddress))
+ {
+ /* invalid address (MAC addresses have 6 bytes) */
+ //GNUNET_break (0);
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Func wlan_plugin_address_pretty_printer got size: %u, worng size!\n",
+ addrlen);
+ asc (asc_cls, NULL);
+ return;
+ }
+ input = (const unsigned char *) addr;
+ GNUNET_asprintf (&ret,
+ "Transport %s: %s Mac-Address %.2X:%.2X:%.2X:%.2X:%.2X:%.2X",
+ type, PROTOCOL_PREFIX, input[0], input[1], input[2],
+ input[3], input[4], input[5]);
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Func wlan_plugin_address_pretty_printer got size: %u, nummeric %u, type %s; made string: %s\n",
+ addrlen, numeric, type, ret);
+ asc (asc_cls, ret);
+ //only one mac address per plugin
+ asc (asc_cls, NULL);
}
+
+
/**
* handels the data after all fragments are put together
- * @param plugin
- * @param session_light
+ * @param cls macendpoint this messages belongs to
* @param hdr pointer to the data
*/
static void
-wlan_data_message_handler(void *cls, const struct GNUNET_MessageHeader *hdr)
+wlan_data_message_handler (void *cls, const struct GNUNET_MessageHeader *hdr)
{
- struct MacEndpoint * endpoint = (struct MacEndpoint *) cls;
- struct Plugin * plugin = endpoint->plugin;
- struct WlanHeader * wlanheader;
- struct Session * session;
- //const char * tempmsg;
- const struct GNUNET_MessageHeader * temp_hdr;
+ struct MacEndpoint *endpoint = (struct MacEndpoint *) cls;
+ struct Plugin *plugin = endpoint->plugin;
+ struct WlanHeader *wlanheader;
+ struct Session *session;
+
+ const struct GNUNET_MessageHeader *temp_hdr;
struct GNUNET_PeerIdentity tmpsource;
int crc;
- if (ntohs(hdr->type) == GNUNET_MESSAGE_TYPE_WLAN_DATA)
- {
+ GNUNET_assert (plugin != NULL);
-#if DEBUG_wlan
- GNUNET_log(
- GNUNET_ERROR_TYPE_DEBUG,
- "Func wlan_data_message_handler got GNUNET_MESSAGE_TYPE_WLAN_DATA size: %u\n",
- ntohs(hdr->size));
-#endif
+ if (ntohs (hdr->type) == GNUNET_MESSAGE_TYPE_WLAN_DATA)
+ {
- if (ntohs(hdr->size) < sizeof(struct WlanHeader)
- + sizeof(struct GNUNET_MessageHeader))
- {
- //packet not big enought
- return;
- }
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Func wlan_data_message_handler got GNUNET_MESSAGE_TYPE_WLAN_DATA size: %u\n",
+ ntohs (hdr->size));
- wlanheader = (struct WlanHeader *) hdr;
+ if (ntohs (hdr->size) <
+ sizeof (struct WlanHeader) + sizeof (struct GNUNET_MessageHeader))
+ {
+ //packet not big enought
+ return;
+ }
- session = search_session(plugin, endpoint, &wlanheader->source);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ _("# wlan whole messages received"), 1,
+ GNUNET_NO);
+ wlanheader = (struct WlanHeader *) hdr;
- //tempmsg = (char*) &wlanheader[1];
- temp_hdr = (const struct GNUNET_MessageHeader *) &wlanheader[1];
- crc = ntohl(wlanheader->crc);
- wlanheader->crc = 0;
- if (getcrc32((char *) wlanheader, ntohs(wlanheader->header.size)) != crc)
- {
- //wrong crc, dispose message
- GNUNET_log(GNUNET_ERROR_TYPE_INFO,
- "Wlan message header crc was wrong: %u != %u\n",
- getcrc32((char *) wlanheader, ntohs(wlanheader->header.size)),
- crc);
- hexdump((void *) hdr, ntohs(hdr->size));
- return;
- }
+ session = search_session (plugin, endpoint, &wlanheader->source);
- //if not in session list
- if (session == NULL)
+ temp_hdr = (const struct GNUNET_MessageHeader *) &wlanheader[1];
+ crc = ntohl (wlanheader->crc);
+ wlanheader->crc = 0;
+ if (GNUNET_CRYPTO_crc32_n
+ ((char *) wlanheader, ntohs (wlanheader->header.size)) != crc)
+ {
+ //wrong crc, dispose message
+ GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, PLUGIN_LOG_NAME,
+ "Wlan message header crc was wrong: %u != %u\n",
+ GNUNET_CRYPTO_crc32_n ((char *) wlanheader,
+ ntohs (wlanheader->header.size)),
+ crc);
+ hexdump ((void *) hdr, ntohs (hdr->size));
+ return;
+ }
+
+ //if not in session list
+ if (session == NULL)
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "WLAN client not in session list: packet size = %u, inner size = %u, header size = %u\n",
+ ntohs (wlanheader->header.size), ntohs (temp_hdr->size),
+ sizeof (struct WlanHeader));
+ //try if it is a hello message
+ if (ntohs (wlanheader->header.size) >=
+ ntohs (temp_hdr->size) + sizeof (struct WlanHeader))
+ {
+ if (ntohs (temp_hdr->type) == GNUNET_MESSAGE_TYPE_HELLO)
{
-#if DEBUG_wlan
- GNUNET_log(
- GNUNET_ERROR_TYPE_DEBUG,
- "WLAN client not in session list: packet size = %u, inner size = %u, header size = %u\n",
- ntohs(wlanheader->header.size), ntohs(temp_hdr->size),
- sizeof(struct WlanHeader));
-#endif
- //try if it is a hello message
- if (ntohs(wlanheader->header.size) >= ntohs(temp_hdr->size)
- + sizeof(struct WlanHeader))
- {
- if (ntohs(temp_hdr->type) == GNUNET_MESSAGE_TYPE_HELLO)
- {
- if (GNUNET_HELLO_get_id(
- (const struct GNUNET_HELLO_Message *) temp_hdr,
- &tmpsource) == GNUNET_OK)
- {
- session = create_session(plugin, endpoint, &tmpsource);
- }
- else
- {
- GNUNET_log(GNUNET_ERROR_TYPE_WARNING,
- "WLAN client not in session list and hello message is not okay\n");
- return;
- }
-
- }
- else
- {
- GNUNET_log(GNUNET_ERROR_TYPE_WARNING,
- "WLAN client not in session list and not a hello message\n");
- return;
- }
- }
+ if (GNUNET_HELLO_get_id
+ ((const struct GNUNET_HELLO_Message *) temp_hdr,
+ &tmpsource) == GNUNET_OK)
+ {
+ session = create_session (plugin, endpoint, &tmpsource);
+ }
else
- {
- GNUNET_log(
- GNUNET_ERROR_TYPE_WARNING,
- "WLAN client not in session list and message size in does not fit\npacket size = %u, inner size = %u, header size = %u\n",
- ntohs(wlanheader->header.size), ntohs(temp_hdr->size),
- sizeof(struct WlanHeader));
- return;
- }
- }
-
- //"receive" the message
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, PLUGIN_LOG_NAME,
+ "WLAN client not in session list and hello message is not okay\n");
+ return;
+ }
- if (memcmp(&wlanheader->source, &session->target,
- sizeof(struct GNUNET_PeerIdentity)) != 0)
- {
- //wrong peer id
-#if DEBUG_wlan
- GNUNET_log(
- GNUNET_ERROR_TYPE_DEBUG,
- "WLAN peer source id doesn't match packet peer source id: session %p\n",
- session);
-#endif
- return;
}
-
- if (memcmp(&wlanheader->target, plugin->env->my_identity,
- sizeof(struct GNUNET_PeerIdentity)) != 0)
+ else
{
- //wrong peer id
-#if DEBUG_wlan
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "WLAN peer target id doesn't match our peer id: session %p\n",
- session);
-#endif
+ GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, PLUGIN_LOG_NAME,
+ "WLAN client not in session list and not a hello message\n");
return;
}
+ }
+ else
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, PLUGIN_LOG_NAME,
+ "WLAN client not in session list and message size in does not fit\npacket size = %u, inner size = %u, header size = %u\n",
+ ntohs (wlanheader->header.size),
+ ntohs (temp_hdr->size), sizeof (struct WlanHeader));
+ return;
+ }
+ }
- GNUNET_SERVER_mst_receive(plugin->data_tokenizer, session,
- (const char *) temp_hdr,
- ntohs(hdr->size) - sizeof(struct WlanHeader), GNUNET_YES, GNUNET_NO);
+ //"receive" the message
+ if (memcmp
+ (&wlanheader->source, &session->target,
+ sizeof (struct GNUNET_PeerIdentity)) != 0)
+ {
+ //wrong peer id
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "WLAN peer source id doesn't match packet peer source id: session %p\n",
+ session);
return;
}
- else
+
+ if (memcmp
+ (&wlanheader->target, plugin->env->my_identity,
+ sizeof (struct GNUNET_PeerIdentity)) != 0)
{
- GNUNET_log(GNUNET_ERROR_TYPE_WARNING,
- "wlan_data_message_handler got wrong message type\n");
+ //wrong peer id
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "WLAN peer target id doesn't match our peer id: session %p\n",
+ session);
return;
}
+
+ GNUNET_SERVER_mst_receive (plugin->data_tokenizer, session,
+ (const char *) temp_hdr,
+ ntohs (hdr->size) - sizeof (struct WlanHeader),
+ GNUNET_YES, GNUNET_NO);
+
+ return;
+ }
+ else
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, PLUGIN_LOG_NAME,
+ "wlan_data_message_handler got wrong message type: %u\n",
+ ntohs (hdr->size));
+ return;
+ }
}
-//TODO DOXIGEN
+/**
+ * function to process the a message, give it to the higher layer
+ * @param cls pointer to the plugin
+ * @param client pointer to the session this message belongs to
+ * @param hdr start of the message
+ */
+//TODO ATS informations
static void
-process_data(void *cls, void *client, const struct GNUNET_MessageHeader *hdr)
+process_data (void *cls, void *client, const struct GNUNET_MessageHeader *hdr)
{
- GNUNET_assert(client != NULL);
- GNUNET_assert(cls != NULL);
- struct Session * session = (struct Session *) client;
- struct Plugin * plugin = (struct Plugin *) cls;
-
- struct GNUNET_TRANSPORT_ATS_Information distance[2];
- distance[0].type = htonl(GNUNET_TRANSPORT_ATS_QUALITY_NET_DISTANCE);
- distance[0].value = htonl(1);
- distance[1].type = htonl(GNUNET_TRANSPORT_ATS_ARRAY_TERMINATOR);
- distance[1].value = htonl(0);
-
-#if DEBUG_wlan
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "Calling plugin->env->receive for session %p; %s; size: %u\n", session,
- wlan_plugin_address_to_string(NULL, session->mac->addr.mac, 6),
- htons(hdr->size));
-#endif
-
- plugin->env->receive(plugin->env->cls, &(session->target), hdr,
- (const struct GNUNET_TRANSPORT_ATS_Information *) &distance, 2, session,
- (const char*) &session->mac->addr, sizeof(session->mac->addr));
+ GNUNET_assert (client != NULL);
+ GNUNET_assert (cls != NULL);
+ struct Session *session = (struct Session *) client;
+ struct Plugin *plugin = (struct Plugin *) cls;
+ struct GNUNET_ATS_Information ats[2];
+
+ ats[0].type = htonl (GNUNET_ATS_QUALITY_NET_DISTANCE);
+ ats[0].value = htonl (1);
+ ats[1].type = htonl (GNUNET_ATS_NETWORK_TYPE);
+ ats[1].value = htonl (GNUNET_ATS_NET_WLAN);
+
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Calling plugin->env->receive for session %p; %s; size: %u\n",
+ session, wlan_plugin_address_to_string (NULL,
+ session->mac->
+ addr.mac, 6),
+ htons (hdr->size));
+ plugin->env->receive (plugin->env->cls, &(session->target), hdr,
+ (const struct GNUNET_ATS_Information *) &ats, 2,
+ session, (const char *) &session->mac->addr,
+ sizeof (session->mac->addr));
}
/**
* Function used for to process the data received from the wlan interface
*
* @param cls the plugin handle
- * @param session_light FIXME: document
* @param hdr hdr of the GNUNET_MessageHeader
+ * @param rxinfo pointer to the radiotap informations got with this packet FIXME: give ATS info
*/
static void
-wlan_data_helper(void *cls, struct Session_light * session_light,
- const struct GNUNET_MessageHeader * hdr, const struct Radiotap_rx * rxinfo)
+wlan_data_helper (void *cls,
+ const struct GNUNET_MessageHeader *hdr,
+ const struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage *rxinfo)
{
struct Plugin *plugin = cls;
- struct FragmentMessage * fm;
- struct FragmentMessage * fm2;
+ struct FragmentMessage *fm;
+ struct FragmentMessage *fm2;
+ struct GNUNET_PeerIdentity tmpsource;
+ struct MacEndpoint *macendpoint;
+ struct Session *session;
- //ADVERTISEMENT
- if (ntohs(hdr->type) == GNUNET_MESSAGE_TYPE_WLAN_ADVERTISEMENT)
+ // NOTE: session_light->addr = rxinfo->frame.addr2;
+ macendpoint = get_macendpoint (plugin, &rxinfo->frame.addr2, GNUNET_YES);
+
+ switch (ntohs (hdr->type))
+ {
+ case GNUNET_MESSAGE_TYPE_HELLO:
+ //ADVERTISEMENT
+ //TODO better DOS protection, error handling
+ //TODO test first then create session
+ if (GNUNET_HELLO_get_id
+ ((const struct GNUNET_HELLO_Message *) hdr, &tmpsource) == GNUNET_OK)
{
-
- //TODO better DOS protection, error handling
- //TODO test first than create session
- GNUNET_assert(session_light != NULL);
-
-#if DEBUG_wlan
- GNUNET_log(
- GNUNET_ERROR_TYPE_DEBUG,
- "Func wlan_data_helper got GNUNET_MESSAGE_TYPE_WLAN_ADVERTISEMENT size: %u; %s\n",
- ntohs(hdr->size),
- wlan_plugin_address_to_string(NULL, session_light->addr.mac, 6));
-#endif
-
- if (session_light->macendpoint == NULL)
- {
- session_light->macendpoint = get_macendpoint(plugin,
- &session_light->addr, GNUNET_NO);
- }
- GNUNET_assert(GNUNET_HELLO_get_id(
- (const struct GNUNET_HELLO_Message *) &hdr[1],
- &(session_light->session->target) ) != GNUNET_SYSERR);
-
+ session = search_session (plugin, macendpoint, &tmpsource);
+ if (session == NULL)
+ {
+ session = create_session (plugin, macendpoint, &tmpsource);
+ }
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ _("# wlan hello messages received"), 1,
+ GNUNET_NO);
+ plugin->env->receive (plugin->env->cls, &session->target,
+ hdr, NULL, 0, session,
+ (const char *) &session->mac->addr,
+ sizeof (session->mac->addr));
}
-
- //FRAGMENT
-
- else if (ntohs(hdr->type) == GNUNET_MESSAGE_TYPE_FRAGMENT)
+ else
{
-
- GNUNET_assert(session_light != NULL);
- if (session_light->macendpoint == NULL)
- {
- session_light->macendpoint = get_macendpoint(plugin,
- &session_light->addr, GNUNET_YES);
- }
-
-#if DEBUG_wlan
- GNUNET_log(
- GNUNET_ERROR_TYPE_DEBUG,
- "Func wlan_data_helper got GNUNET_MESSAGE_TYPE_FRAGMENT with size: %u; mac endpoint %p: %s\n",
- ntohs(hdr->size), session_light->macendpoint,
- wlan_plugin_address_to_string(NULL, session_light->addr.mac, 6));
-#endif
-
- int ret = GNUNET_DEFRAGMENT_process_fragment(
- session_light->macendpoint->defrag, hdr);
- if (ret == GNUNET_NO)
- {
- session_light->macendpoint->dups++;
- }
- else if (ret == GNUNET_OK)
- {
- session_light->macendpoint->fragc++;
- }
- set_next_send(plugin);
-
+ GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, PLUGIN_LOG_NAME,
+ "WLAN client not in session list and HELLO message is not okay\n");
+ return;
}
-
- //ACK
-
- else if (ntohs(hdr->type) == GNUNET_MESSAGE_TYPE_FRAGMENT_ACK)
+ break;
+ case GNUNET_MESSAGE_TYPE_FRAGMENT:
+ macendpoint = get_macendpoint (plugin, &rxinfo->frame.addr2, GNUNET_YES);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ _("# wlan fragments received"), 1, GNUNET_NO);
+ int ret =
+ GNUNET_DEFRAGMENT_process_fragment (macendpoint->defrag,
+ hdr);
+
+ if (ret == GNUNET_NO)
{
- GNUNET_assert(session_light != NULL);
- if (session_light->macendpoint == NULL)
- {
- session_light->macendpoint = get_macendpoint(plugin,
- &session_light->addr, GNUNET_NO);
- }
-
- if (session_light->macendpoint == NULL)
- {
-#if DEBUG_wlan
- GNUNET_log(
- GNUNET_ERROR_TYPE_DEBUG,
- "Macendpoint does not exist for this GNUNET_MESSAGE_TYPE_FRAGMENT_ACK size: %u; %s\n",
- ntohs(hdr->size),
- wlan_plugin_address_to_string(NULL, session_light->addr.mac, 6));
-#endif
- return;
- }
-
-#if DEBUG_wlan
- GNUNET_log(
- GNUNET_ERROR_TYPE_DEBUG,
- "Func wlan_data_helper got GNUNET_MESSAGE_TYPE_FRAGMENT_ACK size: %u; mac endpoint: %p; %s\n",
- ntohs(hdr->size), session_light->macendpoint,
- wlan_plugin_address_to_string(NULL, session_light->addr.mac, 6));
-#endif
- fm = session_light->macendpoint->sending_messages_head;
- while (fm != NULL)
- {
- fm2 = fm->next;
- int ret = GNUNET_FRAGMENT_process_ack(fm->fragcontext, hdr);
- if (ret == GNUNET_OK)
- {
-#if DEBUG_wlan_retransmission
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "Got last ack, finished fragment message %p\n", fm);
-#endif
- session_light->macendpoint->acks++;
- free_fragment_message(plugin, fm);
- check_fragment_queue(plugin);
- return;
- }
- if (ret == GNUNET_NO)
- {
-#if DEBUG_wlan_retransmission
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Got ack for: %p\n", fm);
-#endif
- session_light->macendpoint->acks++;
- return;
- }
- if (ret == GNUNET_SYSERR)
- {
-
- }
-
- fm = fm2;
- }
-
-#if DEBUG_wlan_retransmission
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "WLAN fragment not in fragment list\n");
-#endif
- return;
-
+ macendpoint->dups++;
}
- else
+ else if (ret == GNUNET_OK)
+ {
+ macendpoint->fragc++;
+ }
+ set_next_send (plugin);
+ break;
+ case GNUNET_MESSAGE_TYPE_FRAGMENT_ACK:
+ if (NULL == macendpoint)
{
- // TODO Wrong data?
- GNUNET_log(
- GNUNET_ERROR_TYPE_INFO,
- "WLAN packet inside the WLAN helper packet has not the right type: %u size: %u\n",
- ntohs(hdr->type), ntohs(hdr->size));
- GNUNET_break(0);
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Macendpoint does not exist for this GNUNET_MESSAGE_TYPE_FRAGMENT_ACK size: %u; %s\n",
+ ntohs (hdr->size), wlan_plugin_address_to_string (NULL,
+ &rxinfo->frame.addr2.mac,
+ 6));
return;
}
+ fm = macendpoint->sending_messages_head;
+ while (fm != NULL)
+ {
+ fm2 = fm->next;
+ GNUNET_STATISTICS_update (plugin->env->stats, _("# wlan acks received"),
+ 1, GNUNET_NO);
+ int ret = GNUNET_FRAGMENT_process_ack (fm->fragcontext, hdr);
-#if 0
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "Helper finished\n");
-#endif
-
+ if (ret == GNUNET_OK)
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Got last ack, finished fragment message %p\n", fm);
+ macendpoint->acks++;
+ fm->session->last_activity = GNUNET_TIME_absolute_get ();
+ macendpoint->last_activity = fm->session->last_activity;
+ free_fragment_message (plugin, fm);
+ check_fragment_queue (plugin);
+ return;
+ }
+ if (ret == GNUNET_NO)
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Got ack for: %p\n", fm);
+ macendpoint->acks++;
+ return;
+ }
+ fm = fm2;
+ }
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "WLAN fragment not in fragment list\n");
+ return;
+ default:
+ // TODO Wrong data?
+ GNUNET_log_from (GNUNET_ERROR_TYPE_INFO, PLUGIN_LOG_NAME,
+ "WLAN packet inside the WLAN helper packet has not the right type: %u size: %u\n",
+ ntohs (hdr->type), ntohs (hdr->size));
+ GNUNET_break (0);
+ return;
+ }
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Helper finished\n");
}
-//TODO DOXIGEN
-const char *
-macprinter(const u_int8_t * mac)
+/**
+ * Function to print mac addresses nicely.
+ *
+ * @param mac the mac address
+ * @return string to a static buffer with the human-readable mac, will be overwritten during the next call to this function
+ */
+static const char *
+macprinter (const struct GNUNET_TRANSPORT_WLAN_MacAddress * mac)
{
static char macstr[20];
- GNUNET_snprintf(macstr, sizeof(macstr), "%X:%X:%X:%X:%X:%X", mac[0], mac[1],
- mac[2], mac[3], mac[4], mac[5]);
+ GNUNET_snprintf (macstr, sizeof (macstr), "%2X:%2X:%2X:%2X:%2X:%2X", mac->mac[0], mac->mac[1],
+ mac->mac[2], mac->mac[3], mac->mac[4], mac->mac[5]);
return macstr;
}
+/**
+ * Function for the scheduler if a mac endpoint times out
+ * @param cls pointer to the MacEndpoint
+ * @param tc pointer to the GNUNET_SCHEDULER_TaskContext
+ */
+static void
+macendpoint_timeout (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ struct MacEndpoint *endpoint = cls;
+
+ GNUNET_assert (endpoint != NULL);
+ endpoint->timeout_task = GNUNET_SCHEDULER_NO_TASK;
+ if (tc->reason == GNUNET_SCHEDULER_REASON_SHUTDOWN)
+ {
+ return;
+ }
+ if (GNUNET_TIME_absolute_get_remaining
+ (GNUNET_TIME_absolute_add
+ (endpoint->last_activity, MACENDPOINT_TIMEOUT)).rel_value == 0)
+ {
+ GNUNET_assert (endpoint->plugin != NULL);
+ GNUNET_STATISTICS_update (endpoint->plugin->env->stats,
+ _("# wlan mac endpoints timeouts"), 1, GNUNET_NO);
+ free_macendpoint (endpoint->plugin, endpoint);
+ }
+ else
+ {
+ endpoint->timeout_task =
+ GNUNET_SCHEDULER_add_delayed (MACENDPOINT_TIMEOUT, &macendpoint_timeout,
+ endpoint);
+ }
+}
+
/**
* function to create an macendpoint
* @param plugin pointer to the plugin struct
* @return returns a macendpoint
*/
static struct MacEndpoint *
-create_macendpoint(struct Plugin *plugin, const struct MacAddress *addr)
+create_macendpoint (struct Plugin *plugin, const struct GNUNET_TRANSPORT_WLAN_MacAddress *addr)
{
- struct MacEndpoint * newend = GNUNET_malloc(sizeof (struct MacEndpoint));
+ struct MacEndpoint *newend = GNUNET_malloc (sizeof (struct MacEndpoint));
+
+ GNUNET_assert (plugin != NULL);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ _("# wlan mac endpoints created"), 1, GNUNET_NO);
newend->addr = *addr;
newend->plugin = plugin;
newend->addr = *addr;
newend->fragment_messages_out_count = 0;
- newend->defrag = GNUNET_DEFRAGMENT_context_create(plugin->env->stats,
- WLAN_MTU, MESSAGES_IN_DEFRAG_QUEUE_PER_MAC, newend,
- &wlan_data_message_handler, &add_ack_for_send);
+ newend->defrag =
+ GNUNET_DEFRAGMENT_context_create (plugin->env->stats, WLAN_MTU,
+ MESSAGES_IN_DEFRAG_QUEUE_PER_MAC,
+ newend, &wlan_data_message_handler,
+ &add_ack_for_send);
+ newend->last_activity = GNUNET_TIME_absolute_get ();
+ newend->timeout_task =
+ GNUNET_SCHEDULER_add_delayed (MACENDPOINT_TIMEOUT, &macendpoint_timeout,
+ newend);
plugin->mac_count++;
- GNUNET_CONTAINER_DLL_insert_tail(plugin->mac_head, plugin->mac_tail, newend);
-#if DEBUG_wlan
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "New Mac Endpoint %p: %s\n", newend,
- wlan_plugin_address_to_string(NULL, newend->addr.mac, 6));
-#endif
+ GNUNET_STATISTICS_set (plugin->env->stats, _("# wlan mac endpoints"),
+ plugin->mac_count, GNUNET_NO);
+ GNUNET_CONTAINER_DLL_insert_tail (plugin->mac_head, plugin->mac_tail, newend);
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "New Mac Endpoint %p: %s\n", newend,
+ wlan_plugin_address_to_string (NULL, newend->addr.mac, 6));
return newend;
}
* @param hdr header of the GNUNET_MessageHeader
*/
static void
-wlan_process_helper(void *cls, void *client,
- const struct GNUNET_MessageHeader *hdr)
+wlan_process_helper (void *cls, void *client,
+ const struct GNUNET_MessageHeader *hdr)
{
struct Plugin *plugin = cls;
- struct ieee80211_frame * wlanIeeeHeader = NULL;
- struct Session_light * session_light = NULL;
- struct Radiotap_rx * rxinfo;
- const struct GNUNET_MessageHeader * temp_hdr = NULL;
-
+ const struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage *rxinfo;
+ const struct GNUNET_TRANSPORT_WLAN_HelperControlMessage *cm;
+ const struct GNUNET_MessageHeader *temp_hdr = NULL;
+ const char *end;
int datasize = 0;
int pos;
- switch (ntohs(hdr->type))
- {
- case GNUNET_MESSAGE_TYPE_WLAN_HELPER_DATA:
-#if DEBUG_wlan
- GNUNET_log(
- GNUNET_ERROR_TYPE_DEBUG,
- "Func wlan_process_helper got GNUNET_MESSAGE_TYPE_WLAN_HELPER_DATA size: %u\n",
- ntohs(hdr->size));
-#endif
-
+ GNUNET_assert (plugin != NULL);
+ switch (ntohs (hdr->type))
+ {
+ case GNUNET_MESSAGE_TYPE_WLAN_DATA_FROM_HELPER:
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Got data message from helper with %u bytes\n",
+ ntohs (hdr->size));
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ _("# wlan data messages received"), 1,
+ GNUNET_NO);
//call wlan_process_helper with the message inside, later with wlan: analyze signal
- if (ntohs(hdr->size) < sizeof(struct ieee80211_frame)
- + sizeof(struct GNUNET_MessageHeader) + sizeof(struct Radiotap_rx))
- {
-#if DEBUG_wlan
- GNUNET_log(
- GNUNET_ERROR_TYPE_DEBUG,
- "Size of packet is too small; size: %u min size: %u\n",
- ntohs(hdr->size),
- sizeof(struct ieee80211_frame)
- + sizeof(struct GNUNET_MessageHeader));
-#endif
- //GNUNET_break (0);
- /* FIXME: restart SUID process */
- return;
- }
- rxinfo = (struct Radiotap_rx *) &hdr[1];
- wlanIeeeHeader = (struct ieee80211_frame *) &rxinfo[1];
+ if (ntohs (hdr->size) < sizeof (struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage))
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Size of packet is too small; size: %u\n",
+ ntohs (hdr->size));
+ GNUNET_break (0);
+ /* FIXME: restart SUID process */
+ return;
+ }
+ rxinfo = (const struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage *) hdr;
//process only if it is an broadcast or for this computer both with the gnunet bssid
-
//check for bssid
- if (memcmp(&(wlanIeeeHeader->i_addr3), &mac_bssid,
- sizeof(struct MacAddress)) == 0)
+ if (memcmp
+ (&rxinfo->frame.addr3, &mac_bssid_gnunet,
+ sizeof (struct GNUNET_TRANSPORT_WLAN_MacAddress)) == 0)
+ {
+ //check for broadcast or mac
+ if ((memcmp
+ (&rxinfo->frame.addr1, &bc_all_mac,
+ sizeof (struct GNUNET_TRANSPORT_WLAN_MacAddress)) == 0) ||
+ (memcmp
+ (&rxinfo->frame.addr1, &plugin->mac_address,
+ sizeof (struct GNUNET_TRANSPORT_WLAN_MacAddress)) == 0))
{
- //check for broadcast or mac
- if (memcmp(&(wlanIeeeHeader->i_addr1), &bc_all_mac,
- sizeof(struct MacAddress) == 0) || memcmp(
- &(wlanIeeeHeader->i_addr1), &(plugin->mac_address),
- sizeof(struct MacAddress)) == 0)
+ //if packet is from us return
+ if ((memcmp
+ (&rxinfo->frame.addr2, &plugin->mac_address,
+ sizeof (struct GNUNET_TRANSPORT_WLAN_MacAddress)) == 0))
+ {
+ /* not for us */
+ return;
+ }
+ datasize = ntohs (hdr->size) - sizeof (struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ _("# wlan messages for this client received"),
+ 1, GNUNET_NO);
+ // FIXME: this is a job for SERVER_mst --
+ // what we are doing here is not good for alignment...
+ pos = 0;
+ end = (const char*) &rxinfo[1];
+ while (pos < datasize - sizeof (struct GNUNET_MessageHeader))
+ {
+ temp_hdr = (struct GNUNET_MessageHeader *) &end[pos];
+ if (ntohs (temp_hdr->size) <= datasize - pos)
{
-
- // process the inner data
-
-
- datasize = ntohs(hdr->size) - sizeof(struct ieee80211_frame)
- - sizeof(struct GNUNET_MessageHeader)
- - sizeof(struct Radiotap_rx);
-
- session_light = GNUNET_malloc(sizeof(struct Session_light));
- memcpy(&session_light->addr, &(wlanIeeeHeader->i_addr2),
- sizeof(struct MacAddress));
- //session_light->session = search_session(plugin,session_light->addr);
-
- pos = 0;
- while (pos < datasize)
- {
- temp_hdr = (struct GNUNET_MessageHeader *) &wlanIeeeHeader[1]
- + pos;
-
- wlan_data_helper(plugin, session_light, temp_hdr, rxinfo);
- pos += ntohs(temp_hdr->size);
-
- }
-
- //clean up
- GNUNET_free(session_light);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ _
+ ("# wlan messages inside WLAN_HELPER_DATA received"),
+ 1, GNUNET_NO);
+ wlan_data_helper (plugin, temp_hdr, rxinfo);
}
- else
+ else
{
-#if DEBUG_wlan
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "Func wlan_process_helper got wrong MAC: %s\n",
- macprinter(wlanIeeeHeader->i_addr1));
-#endif
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Size of packet is too small; size: %u > size of packet: %u\n",
+ ntohs (temp_hdr->size), datasize - pos);
}
+ pos += ntohs (temp_hdr->size);
+ }
}
- else
+ else
{
-#if DEBUG_wlan
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "Func wlan_process_helper got wrong BSSID: %s\n",
- macprinter(wlanIeeeHeader->i_addr2));
-#endif
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Func wlan_process_helper got wrong MAC: %s\n",
+ macprinter (&rxinfo->frame.addr1));
}
+ }
+ else
+ {
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Func wlan_process_helper got wrong BSSID: %s\n",
+ macprinter (&rxinfo->frame.addr2));
+ }
break;
case GNUNET_MESSAGE_TYPE_WLAN_HELPER_CONTROL:
//TODO more control messages
- //TODO use struct wlan_helper_control
- if (ntohs(hdr->size) != sizeof(struct Wlan_Helper_Control_Message))
- {
- GNUNET_break (0);
- /* FIXME: restart SUID process */
- return;
- }
- memcpy(&plugin->mac_address, &hdr[1], sizeof(struct MacAddress));
-#if DEBUG_wlan
- GNUNET_log(
- GNUNET_ERROR_TYPE_DEBUG,
- "Received WLAN_HELPER_CONTROL message with transport of address %s\n",
- wlan_plugin_address_to_string(cls, &plugin->mac_address,
- sizeof(struct MacAddress)));
-#endif
- plugin->env->notify_address(plugin->env->cls, GNUNET_YES,
- &plugin->mac_address, sizeof(struct MacAddress));
+ if (ntohs (hdr->size) != sizeof (struct GNUNET_TRANSPORT_WLAN_HelperControlMessage))
+ {
+ GNUNET_break (0);
+ /* FIXME: restart SUID process */
+ return;
+ }
+ cm = (const struct GNUNET_TRANSPORT_WLAN_HelperControlMessage *) hdr;
+ plugin->mac_address = cm->mac;
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Received WLAN_HELPER_CONTROL message with transport of address %s\n",
+ wlan_plugin_address_to_string (cls, &plugin->mac_address,
+ sizeof (struct GNUNET_TRANSPORT_WLAN_MacAddress)));
+ plugin->env->notify_address (plugin->env->cls, GNUNET_YES,
+ &plugin->mac_address,
+ sizeof (struct GNUNET_TRANSPORT_WLAN_MacAddress));
break;
default:
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "Func wlan_process_helper got unknown message with number %u, size %u\n",
+ ntohs (hdr->type), ntohs (hdr->size));
GNUNET_break (0);
return;
- }
-}
-
-/**
- * We have been notified that wlan-helper has written something to stdout.
- * Handle the output, then reschedule this function to be called again once
- * more is available.
- *
- * @param cls the plugin handle
- * @param tc the scheduling context
- */
-static void
-wlan_plugin_helper_read(void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
-{
- struct Plugin *plugin = cls;
- plugin->server_read_task = GNUNET_SCHEDULER_NO_TASK;
-
- if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
- return;
-
- char mybuf[WLAN_MTU + sizeof(struct GNUNET_MessageHeader)];
- ssize_t bytes;
-
- bytes = GNUNET_DISK_file_read(plugin->server_stdout_handle, mybuf,
- sizeof(mybuf));
- if (bytes <= 0)
- {
-#if DEBUG_wlan
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- _("Finished reading from wlan-helper stdout with code: %d\n"),
- bytes);
-#endif
- return;
- }
- GNUNET_SERVER_mst_receive(plugin->suid_tokenizer, NULL, mybuf, bytes,
- GNUNET_NO, GNUNET_NO);
-
- GNUNET_assert(plugin->server_read_task == GNUNET_SCHEDULER_NO_TASK);
- plugin->server_read_task = GNUNET_SCHEDULER_add_read_file(
- GNUNET_TIME_UNIT_FOREVER_REL, plugin->server_stdout_handle,
- &wlan_plugin_helper_read, plugin);
+ }
}
-/**
- * Start the gnunet-wlan-helper process.
- *
- * @param plugin the transport plugin
- * @param testmode should we use the dummy driver for testing?
- * @return GNUNET_YES if process was started, GNUNET_SYSERR on error
- */
-static int
-wlan_transport_start_wlan_helper(struct Plugin *plugin, int testmode)
-{
- const char * filenamehw = "gnunet-transport-wlan-helper";
- const char * filenameloopback = "gnunet-transport-wlan-helper-dummy";
- plugin->server_stdout = GNUNET_DISK_pipe(GNUNET_YES, GNUNET_NO, GNUNET_YES);
- if (plugin->server_stdout == NULL)
- return GNUNET_SYSERR;
-
- plugin->server_stdin = GNUNET_DISK_pipe(GNUNET_YES, GNUNET_YES, GNUNET_NO);
- if (plugin->server_stdin == NULL)
- return GNUNET_SYSERR;
-
- /* Start the server process */
-
- if (testmode == 0)
- {
-
-#if DEBUG_wlan
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "Starting gnunet-wlan-helper process cmd: %s %s %i\n", filenamehw,
- plugin->interface, testmode);
-#endif
-
- plugin->server_proc = GNUNET_OS_start_process(plugin->server_stdin,
- plugin->server_stdout, filenamehw, filenamehw, plugin->interface,
- NULL);
- }
- else if (testmode == 1)
- {
-
-#if DEBUG_wlan
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "Starting gnunet-wlan-helper loopback 1 process cmd: %s %s %i\n",
- filenameloopback, plugin->interface, testmode);
-#endif
-
- plugin->server_proc = GNUNET_OS_start_process(plugin->server_stdin,
- plugin->server_stdout, filenameloopback, filenameloopback, "1", NULL);
- }
- else if (testmode == 2)
- {
-#if DEBUG_wlan
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "Starting gnunet-wlan-helper loopback 2 process cmd: %s %s %i\n",
- filenameloopback, plugin->interface, testmode);
-#endif
- plugin->server_proc = GNUNET_OS_start_process(plugin->server_stdin,
- plugin->server_stdout, filenameloopback, filenameloopback, "2", NULL);
- }
- if (plugin->server_proc == NULL)
- {
-#if DEBUG_wlan
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "Failed to start gnunet-wlan-helper process\n");
-#endif
- return GNUNET_SYSERR;
- }
-
- /* Close the write end of the read pipe */
- GNUNET_DISK_pipe_close_end(plugin->server_stdout, GNUNET_DISK_PIPE_END_WRITE);
-
- /* Close the read end of the write pipe */
- GNUNET_DISK_pipe_close_end(plugin->server_stdin, GNUNET_DISK_PIPE_END_READ);
-
- plugin->server_stdout_handle = GNUNET_DISK_pipe_handle(plugin->server_stdout,
- GNUNET_DISK_PIPE_END_READ);
- plugin->server_stdin_handle = GNUNET_DISK_pipe_handle(plugin->server_stdin,
- GNUNET_DISK_PIPE_END_WRITE);
-
- GNUNET_assert(plugin->server_read_task == GNUNET_SCHEDULER_NO_TASK);
-
-#if DEBUG_wlan
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "Adding server_read_task for the wlan-helper\n");
-#endif
-
- plugin->server_read_task = GNUNET_SCHEDULER_add_read_file(
- GNUNET_TIME_UNIT_FOREVER_REL, plugin->server_stdout_handle,
- &wlan_plugin_helper_read, plugin);
- return GNUNET_YES;
-}
/**
* Exit point from the plugin.
* @param cls pointer to the api struct
*/
-
//FIXME cleanup
void *
-libgnunet_plugin_transport_wlan_done(void *cls)
+libgnunet_plugin_transport_wlan_done (void *cls)
{
struct GNUNET_TRANSPORT_PluginFunctions *api = cls;
struct Plugin *plugin = api->cls;
- struct MacEndpoint * endpoint = plugin->mac_head;
- struct MacEndpoint * endpoint_next;
-
-#if DEBUG_wlan
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "libgnunet_plugin_transport_wlan_done started\n");
-#endif
-
- GNUNET_DISK_pipe_close(plugin->server_stdout);
- GNUNET_DISK_pipe_close(plugin->server_stdin);
- GNUNET_OS_process_kill(plugin->server_proc, 9);
- GNUNET_OS_process_close(plugin->server_proc);
-
- GNUNET_assert (cls !=NULL);
+ struct MacEndpoint *endpoint;
+ struct MacEndpoint *endpoint_next;
+
+ if (NULL == plugin)
+ {
+ GNUNET_free (api);
+ return NULL;
+ }
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "libgnunet_plugin_transport_wlan_done started\n");
+ wlan_transport_stop_wlan_helper (plugin);
+
+ GNUNET_assert (cls != NULL);
//free sessions
+ endpoint = plugin->mac_head;
while (endpoint != NULL)
- {
- endpoint_next = endpoint->next;
- free_macendpoint(plugin, endpoint);
- endpoint = endpoint_next;
-
- }
- if (plugin->server_write_delay_task != GNUNET_SCHEDULER_NO_TASK)
- {
- GNUNET_SCHEDULER_cancel(plugin->server_write_delay_task);
- plugin->server_write_delay_task = GNUNET_SCHEDULER_NO_TASK;
- }
- if (plugin->server_write_task != GNUNET_SCHEDULER_NO_TASK)
- {
- GNUNET_SCHEDULER_cancel(plugin->server_write_task);
- plugin->server_write_task = GNUNET_SCHEDULER_NO_TASK;
- }
- if (plugin->server_read_task != GNUNET_SCHEDULER_NO_TASK)
- {
- GNUNET_SCHEDULER_cancel(plugin->server_read_task);
- plugin->server_read_task = GNUNET_SCHEDULER_NO_TASK;
- }
+ {
+ endpoint_next = endpoint->next;
+ free_macendpoint (plugin, endpoint);
+ endpoint = endpoint_next;
+ }
if (plugin->suid_tokenizer != NULL)
- GNUNET_SERVER_mst_destroy(plugin->suid_tokenizer);
+ GNUNET_SERVER_mst_destroy (plugin->suid_tokenizer);
if (plugin->data_tokenizer != NULL)
- GNUNET_SERVER_mst_destroy(plugin->data_tokenizer);
+ GNUNET_SERVER_mst_destroy (plugin->data_tokenizer);
- GNUNET_free_non_null(plugin->interface);
+ GNUNET_free_non_null (plugin->interface);
GNUNET_free (plugin);
GNUNET_free (api);
return NULL;
}
+
/**
* Entry point for the plugin.
*
* @return the 'struct GNUNET_TRANSPORT_PluginFunctions*' or NULL on error
*/
void *
-libgnunet_plugin_transport_wlan_init(void *cls)
+libgnunet_plugin_transport_wlan_init (void *cls)
{
- //struct GNUNET_SERVICE_Context *service;
struct GNUNET_TRANSPORT_PluginEnvironment *env = cls;
struct GNUNET_TRANSPORT_PluginFunctions *api;
struct Plugin *plugin;
- static unsigned long long testmode = 0;
- GNUNET_assert(cls !=NULL);
+ if (NULL == env->receive)
+ {
+ /* run in 'stub' mode (i.e. as part of gnunet-peerinfo), don't fully
+ initialze the plugin or the API */
+ api = GNUNET_malloc (sizeof (struct GNUNET_TRANSPORT_PluginFunctions));
+ api->cls = NULL;
+ api->address_pretty_printer = &wlan_plugin_address_pretty_printer;
+ api->address_to_string = &wlan_plugin_address_to_string;
+ api->string_to_address = NULL; // FIXME!
+ return api;
+ }
plugin = GNUNET_malloc (sizeof (struct Plugin));
plugin->env = env;
plugin->pendingsessions = 0;
+ GNUNET_STATISTICS_set (plugin->env->stats, _("# wlan pending sessions"),
+ plugin->pendingsessions, GNUNET_NO);
plugin->mac_count = 0;
+ GNUNET_STATISTICS_set (plugin->env->stats, _("# wlan mac endpoints"),
+ plugin->mac_count, GNUNET_NO);
plugin->server_write_task = GNUNET_SCHEDULER_NO_TASK;
plugin->server_read_task = GNUNET_SCHEDULER_NO_TASK;
plugin->server_write_delay_task = GNUNET_SCHEDULER_NO_TASK;
- GNUNET_BANDWIDTH_tracker_init(&plugin->tracker,
- GNUNET_BANDWIDTH_value_init(100 * 1024 * 1024 / 8), 100);
+ GNUNET_BANDWIDTH_tracker_init (&plugin->tracker,
+ GNUNET_BANDWIDTH_value_init (100 * 1024 *
+ 1024 / 8), 100);
- plugin->suid_tokenizer = GNUNET_SERVER_mst_create(&wlan_process_helper,
- plugin);
+ plugin->suid_tokenizer =
+ GNUNET_SERVER_mst_create (&wlan_process_helper, plugin);
- plugin->data_tokenizer = GNUNET_SERVER_mst_create(&process_data, plugin);
+ plugin->data_tokenizer = GNUNET_SERVER_mst_create (&process_data, plugin);
//plugin->sessions = GNUNET_malloc (sizeof (struct Sessionqueue));
//plugin->pending_Sessions_head = GNUNET_malloc (sizeof (struct Sessionqueue));
api = GNUNET_malloc (sizeof (struct GNUNET_TRANSPORT_PluginFunctions));
api->cls = plugin;
api->send = &wlan_plugin_send;
+ api->get_session = &wlan_plugin_get_session;
api->disconnect = &wlan_plugin_disconnect;
api->address_pretty_printer = &wlan_plugin_address_pretty_printer;
api->check_address = &wlan_plugin_address_suggested;
api->address_to_string = &wlan_plugin_address_to_string;
- //read config
- if (GNUNET_CONFIGURATION_have_value(env->cfg, "transport-wlan", "TESTMODE"))
- {
- if (GNUNET_SYSERR == GNUNET_CONFIGURATION_get_value_number(env->cfg,
- "transport-wlan", "TESTMODE", &testmode))
- testmode = 0; //default value
- }
+ //read config
- if (GNUNET_CONFIGURATION_have_value(env->cfg, "transport-wlan", "INTERFACE"))
+ if (GNUNET_CONFIGURATION_have_value (env->cfg, "transport-wlan", "TESTMODE"))
+ {
+ if (GNUNET_SYSERR ==
+ GNUNET_CONFIGURATION_get_value_number (env->cfg, "transport-wlan",
+ "TESTMODE", &(plugin->testmode)))
+ plugin->testmode = 0; //default value
+ }
+
+ if (GNUNET_CONFIGURATION_have_value (env->cfg, "transport-wlan", "INTERFACE"))
+ {
+ if (GNUNET_CONFIGURATION_get_value_string
+ (env->cfg, "transport-wlan", "INTERFACE",
+ &(plugin->interface)) != GNUNET_YES)
{
- if (GNUNET_CONFIGURATION_get_value_string(env->cfg, "transport-wlan",
- "INTERFACE", &(plugin->interface)) != GNUNET_YES)
- {
- libgnunet_plugin_transport_wlan_done(api);
- return NULL;
- }
+ libgnunet_plugin_transport_wlan_done (api);
+ return NULL;
}
+ }
//start the plugin
- set_next_beacon_time(plugin);
+ wlan_transport_start_wlan_helper (plugin);
+ set_next_beacon_time (plugin);
+ set_next_send (plugin);
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ "wlan init finished\n");
+ return api;
+}
- wlan_transport_start_wlan_helper(plugin, testmode);
-#if DEBUG_wlan
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "wlan init finished\n");
-#endif
- return api;
-}
/* end of plugin_transport_wlan.c */
projects / oweals / gnunet.git / blobdiff