/*
- 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 "gnunet_crypto_lib.h"
#include "gnunet_fragmentation_lib.h"
#include "gnunet_constants.h"
-//#include "wlan/ieee80211.h"
-//#include <netinet/ip.h>
-#include <string.h>
+/**
+ * DEBUG switch
+ */
+#define DEBUG_WLAN GNUNET_EXTRA_LOGGING
+
#define PROTOCOL_PREFIX "wlan"
*/
#define HELLO_BEACON_SCALING_FACTOR 30
+/**
+ * scaling factor for restarting the helper
+ */
+#define HELPER_RESTART_SCALING_FACTOR 2
+
/**
* max size of fragment queue
*/
* 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
/**
- * LLC fields for better compatibility
- */
-#define WLAN_LLC_DSAP_FIELD 0xf
-#define WLAN_LLC_SSAP_FIELD 0xf
-
-
-/**
- * DEBUG switch
- */
-#define DEBUG_wlan GNUNET_EXTRA_LOGGING
-#define DEBUG_wlan_retransmission GNUNET_EXTRA_LOGGING
-#define DEBUG_wlan_ip_udp_packets_on_air GNUNET_NO
-#define DEBUG_wlan_msg_dump GNUNET_EXTRA_LOGGING
-
-
-#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.
+ * Link layer control fields for better compatibility
+ * (i.e. GNUnet over WLAN is not IP-over-WLAN).
*/
-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 */
-};
+#define WLAN_LLC_DSAP_FIELD 0x1f
+#define WLAN_LLC_SSAP_FIELD 0x1f
-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];
- u_int8_t llc[4];
-#if DEBUG_wlan_ip_udp_packets_on_air > 1
- struct iph ip;
- struct udphdr udp;
-#endif
-} GNUNET_PACKED;
/**
* Encapsulation of all of the state of the plugin.
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
* messages ready for send, head
*/
struct FragmentMessage_queue *sending_messages_head;
+
/**
* messages ready for send, tail
*/
struct FragmentMessage_queue *sending_messages_tail;
+
/**
* time of the next "hello-beacon"
*/
* Tracker for bandwidth limit
*/
struct GNUNET_BANDWIDTH_Tracker tracker;
+
+ /**
+ * saves the current state of the helper process
+ */
+ int helper_is_running;
};
/**
*/
struct Finish_send
{
+ /**
+ * pointer to the global plugin struct
+ */
struct Plugin *plugin;
- char *msgheader;
+
+ /**
+ * 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;
+#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 *content;
};
+
/**
* Queue for the fragments received
*/
-//TODO DOXIGEN
+//TODO DOXYGEN
struct Receive_Fragment_Queue
{
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 FragmentMessage *fm;
};
-//TODO DOXIGEN
+//TODO DOXYGEN
struct Plugin_Session_pair
{
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
* be transmitted.
* dll next
*/
struct PendingMessage *next;
+
/**
* dll prev
*/
};
+
/**
* Queue for acks to send for fragments recived
*/
* next ack in the ack send queue
*/
struct AckSendQueue *next;
+
/**
* previous ack in the ack send queue
*/
struct AckSendQueue *prev;
+
/**
* pointer to the session this ack belongs to
*/
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
- */
- struct ieee80211_frame *ieeewlanheader;
- /**
- * pointer to the radiotap header
+ * pointer to the radiotap header with the ACK Message.
*/
- 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.
* Pointer to the global plugin struct.
*/
struct Plugin *plugin;
+
/**
* Struct to hold the session reachable over this mac; head
*/
struct Sessionqueue *sessions_head;
+
/**
* Struct to hold the session reachable over this mac; tail
*/
struct Sessionqueue *sessions_tail;
+
/**
* Messages currently sending
* to a peer, if any.
* to a peer (tail), if any.
*/
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
/**
* 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;
/**
* Struct for Messages in the fragment queue
*/
-
struct FragmentMessage
{
/**
* Session this message belongs to
*/
-
struct Session *session;
/**
*/
GNUNET_SCHEDULER_TaskIdentifier timeout_task;
- /**
- * Fragment to send
- */
- char *frag;
-
- /**
- * size of message
- */
- size_t size;
-
- /**
- * 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);
+
+
static void
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.
t += sprintf (t, "%02X", src[j] & 0xff);
else
t += sprintf (t, " ");
- t += sprintf (t, j % 2 ? " " : "-");
+
+ t += sprintf (t, (j % 2) ? " " : "-");
}
t += sprintf (t, " ");
}
}
+
/**
* 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,
+get_macendpoint (struct Plugin *plugin, const struct GNUNET_TRANSPORT_WLAN_MacAddress *addr,
int create_new)
{
struct MacEndpoint *queue = plugin->mac_head;
while (queue != NULL)
{
//GNUNET_assert (queue->sessions_head != NULL);
- if (memcmp (addr, &queue->addr, sizeof (struct MacAddress)) == 0)
+ if (memcmp (addr, &queue->addr, sizeof (struct GNUNET_TRANSPORT_WLAN_MacAddress)) == 0)
return queue; /* session found */
queue = queue->next;
}
{
return NULL;
}
-
}
+
/**
* search for a session with the macendpoint and peer id
*
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))
+ if (addrlen != sizeof (struct GNUNET_TRANSPORT_WLAN_MacAddress))
{
GNUNET_break (0);
return NULL;
struct Sessionqueue *queue = cls;
GNUNET_assert (queue != NULL);
- GNUNET_assert(queue->content != NULL);
+ GNUNET_assert (queue->content != NULL);
queue->content->timeout_task = GNUNET_SCHEDULER_NO_TASK;
if (tc->reason == GNUNET_SCHEDULER_REASON_SHUTDOWN)
{
(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);
+ 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
* @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)
{
GNUNET_assert (endpoint != NULL);
GNUNET_assert (plugin != NULL);
- GNUNET_STATISTICS_update (plugin->env->stats, _("# wlan session created"), 1, GNUNET_NO);
+ GNUNET_STATISTICS_update (plugin->env->stats, _("# wlan session created"), 1,
+ GNUNET_NO);
struct Sessionqueue *queue =
GNUNET_malloc (sizeof (struct Sessionqueue) + sizeof (struct Session));
queue->content = (struct Session *) &queue[1];
queue->content->mac = endpoint;
- memcpy (&(queue->content->target), peer, sizeof (struct GNUNET_PeerIdentity));
+ 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);
-#if DEBUG_wlan
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));
-#endif
-
return queue->content;
}
* @return returns the session
*/
static struct Session *
-get_session (struct Plugin *plugin, const struct MacAddress *addr,
+get_session (struct Plugin *plugin, const struct GNUNET_TRANSPORT_WLAN_MacAddress *addr,
const struct GNUNET_PeerIdentity *peer)
{
struct MacEndpoint *mac;
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);
+ GNUNET_STATISTICS_set (plugin->env->stats, _("# wlan pending sessions"),
+ plugin->pendingsessions, GNUNET_NO);
}
}
* 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)
{
}
}
+
/**
* 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)
{
next_send = GNUNET_TIME_absolute_get_remaining (plugin->beacon_time);
}
-#if DEBUG_wlan
GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
"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)
pm = session->pending_message_head;
if (pm == NULL)
- {
-#if DEBUG_wlan
- GNUNET_log_from(GNUNET_ERROR_TYPE_ERROR, PLUGIN_LOG_NAME,
- "pending message is empty, should not happen. session %p\n",
- session);
-#endif
- 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_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_free (sessionqueue_alt);
+ continue;
- }
+ }
//check for message timeout
if (GNUNET_TIME_absolute_get_remaining (pm->timeout).rel_value > 0)
FRAGMENT_QUEUE_MESSAGES_OUT_PER_SESSION))
{
plugin->pendingsessions--;
- GNUNET_STATISTICS_set(plugin->env->stats, _("# wlan pending sessions"), plugin->pendingsessions, GNUNET_NO);
+ 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);
sessionqueue_alt = sessionqueue;
sessionqueue = sessionqueue->next;
plugin->pendingsessions--;
- GNUNET_STATISTICS_set(plugin->env->stats, _("# wlan pending sessions"), plugin->pendingsessions, GNUNET_NO);
+ 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);
struct FragmentMessage_queue *fmq;
struct FragmentMessage_queue *fmq_next;
- if (fm != NULL)
+ fmq = plugin->sending_messages_head;
+ while (fmq != NULL)
{
- fmq = plugin->sending_messages_head;
- while (fmq != NULL)
+ fmq_next = fmq->next;
+ if (fmq->content == fm)
{
- 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;
+ GNUNET_CONTAINER_DLL_remove (plugin->sending_messages_head,
+ plugin->sending_messages_tail, fmq);
+ GNUNET_free (fmq);
}
-
- (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);
- if (fm->timeout_task != GNUNET_SCHEDULER_NO_TASK)
- GNUNET_SCHEDULER_cancel (fm->timeout_task);
- GNUNET_free (fm);
-
- queue_session (plugin, session);
-#if DEBUG_wlan
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
- "Free pending fragment messages %p, session %p\n", fm,
- session);
-#endif
- }
+ 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)
+ 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;
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,
+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);
+ 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;
-
-#if DEBUG_wlan_ip_udp_packets_on_air > 1
- 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->udp.len = htons (size - sizeof (struct ieee80211_frame));
-
-#endif
-
+ Header->llc[2] = 0; // FIXME?
+ Header->llc[3] = 0; // FIXME?
return GNUNET_YES;
}
-/**
- * 32bit CRC
- *
- * @param msgbuf pointer tor the data
- * @param msgbuf_size size of the data
- *
- * @return 32bit crc value
- */
-
-uint32_t
-getcrc32 (const char *msgbuf, size_t msgbuf_size)
-{
-
- return GNUNET_CRYPTO_crc32_n (msgbuf, msgbuf_size);;
-}
-
-/**
- * 16bit CRC
- *
- * @param msgbuf pointer tor the data
- * @param msgbuf_size size of the data
- *
- * @return 16bit crc value
- */
-
-uint16_t
-getcrc16 (const char *msgbuf, size_t msgbuf_size)
-{
- //TODO calc some crc
- return 0;
-}
/**
* 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
*/
-
-void
+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);
- 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;
+ endpoint = fm->session->mac;
+ plugin = endpoint->plugin;
-#if DEBUG_wlan_retransmission > 1
- GNUNET_loHELLO_BEACON_SCALING_FACTORg_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
+ 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);
-#endif
-
- size =
- sizeof (struct GNUNET_MessageHeader) + sizeof (struct Radiotap_Send) +
- sizeof (struct ieee80211_frame) + ntohs (hdr->size);
- fm->frag = GNUNET_malloc (size);
- fm->size = size;
-
- msgheader = (struct GNUNET_MessageHeader *) fm->frag;
- msgheader->size = htons (size);
- msgheader->type = htons (GNUNET_MESSAGE_TYPE_WLAN_HELPER_DATA);
-
- 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));
-
+ 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);
}
+
/**
- * function to send a hello beacon
- * @param plugin pointer to the plugin struct
+ * 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.
+ *
+ * @param cls the plugin handle
+ * @param tc the scheduling context
*/
static void
-send_hello_beacon (struct Plugin *plugin)
+wlan_plugin_helper_read (void *cls,
+ const struct GNUNET_SCHEDULER_TaskContext *tc)
{
+ struct Plugin *plugin = cls;
-#if DEBUG_wlan
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
- "Sending hello beacon\n");
-#endif
-
- uint16_t size;
- ssize_t bytes;
- uint16_t hello_size;
- struct GNUNET_MessageHeader *msgheader;
- struct ieee80211_frame *ieeewlanheader;
- struct Radiotap_Send *radioHeader;
- struct GNUNET_MessageHeader *msgheader2;
- const struct GNUNET_MessageHeader *hello;
-
- GNUNET_assert (plugin != NULL);
-
- 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_MessageHeader) + sizeof (struct Radiotap_Send) +
- sizeof (struct ieee80211_frame) + hello_size;
-
- msgheader = GNUNET_malloc (size);
- msgheader->size = htons (size);
- msgheader->type = htons (GNUNET_MESSAGE_TYPE_WLAN_HELPER_DATA);
-
- 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 ((struct GNUNET_HELLO_Message *) hello) +
- sizeof (struct GNUNET_MessageHeader));
+ plugin->server_read_task = GNUNET_SCHEDULER_NO_TASK;
- msgheader2->type = htons (GNUNET_MESSAGE_TYPE_WLAN_ADVERTISEMENT);*/
- memcpy (msgheader2, hello, hello_size);
+ if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
+ return;
- bytes = GNUNET_DISK_file_write (plugin->server_stdin_handle, msgheader, size);
+ char mybuf[WLAN_MTU + sizeof (struct GNUNET_MessageHeader)];
+ ssize_t bytes;
- if (bytes == GNUNET_SYSERR)
+ bytes =
+ GNUNET_DISK_file_read (plugin->server_stdout_handle, mybuf,
+ sizeof (mybuf));
+ if (bytes <= 0)
{
- GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, PLUGIN_LOG_NAME,
+ GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
_
- ("Error writing to wlan healper. errno == %d, ERROR: %s\n"),
- errno, strerror (errno));
-
+ ("Finished reading from gnunet-helper-transport-wlan stdout with code: %d\n"),
+ bytes);
+ return;
}
- GNUNET_assert (bytes != GNUNET_SYSERR);
- GNUNET_assert (bytes == size);
- GNUNET_free (msgheader);
+ GNUNET_SERVER_mst_receive (plugin->suid_tokenizer, NULL, mybuf, bytes,
+ GNUNET_NO, GNUNET_NO);
- set_next_beacon_time (plugin);
- set_next_send (plugin);
+ 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-helper-transport-wlan process.
+ *
+ * @param plugin the transport plugin
+ * @return GNUNET_YES if process was started, GNUNET_SYSERR on error
+ */
+static int
+wlan_transport_start_wlan_helper (struct Plugin *plugin)
+{
+ 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;
+}
+
+/**
+ * Stops the gnunet-helper-transport-wlan process.
+ *
+ * @param plugin the transport plugin
+ * @return GNUNET_YES if process was started, GNUNET_SYSERR on error
+ */
+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");
+
+ 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 (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;
+ }
+
+ 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);
+
+ plugin->helper_is_running = GNUNET_NO;
+
+ return GNUNET_YES;
+}
+
+/**
+ * function for delayed restart of the helper process
+ * @param cls Finish_send struct if message should be finished
+ * @param tc TaskContext
+ */
+static void
+delay_restart_helper (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ struct Finish_send *finish = cls;
+ struct Plugin *plugin;
+
+ plugin = finish->plugin;
+
+ 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);
+ }
+
+}
+
+/**
+ * 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);
+
+ 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);
+
+}
+
+/**
+ * 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->head_of_next_write, finish->size);
+
+ if (bytes != finish->size)
+ {
+ if (bytes != GNUNET_SYSERR)
+ {
+ 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);
+ }
+ else
+ {
+ restart_helper (plugin, finish);
+ }
+ }
+ else
+ {
+ GNUNET_free (finish->msgstart);
+ GNUNET_free (finish);
+ 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)
{
-
- struct AckSendQueue *ack;
-
- GNUNET_assert (cls != NULL);
struct MacEndpoint *endpoint = cls;
struct Plugin *plugin = endpoint->plugin;
+ struct GNUNET_TRANSPORT_WLAN_RadiotapSendMessage* radioHeader;
+ struct AckSendQueue *ack;
struct GNUNET_MessageHeader *msgheader;
- struct GNUNET_MessageHeader *msgheader2;
uint16_t size;
- size =
- sizeof (struct GNUNET_MessageHeader) + sizeof (struct Radiotap_Send) +
- sizeof (struct ieee80211_frame) + ntohs (hdr->size) +
- sizeof (struct AckSendQueue);
-
+ 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;
-
- 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));
-
+ 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);
-
-#if DEBUG_wlan_retransmission > 1
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);
-#endif
-
set_next_send (plugin);
}
+
/**
* Function for the scheduler if a FragmentMessage times out
* @param cls pointer to the FragmentMessage
GNUNET_assert (fm != NULL);
fm->timeout_task = GNUNET_SCHEDULER_NO_TASK;
- if (tc->reason == GNUNET_SCHEDULER_REASON_SHUTDOWN)
- {
- return;
- }
+ if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
+ return;
free_fragment_message (fm->session->mac->plugin, fm);
}
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->frag = NULL;
fm->fragcontext =
GNUNET_FRAGMENT_context_create (plugin->env->stats, WLAN_MTU,
&plugin->tracker,
{
pid = session->target;
pm->transmit_cont (pm->transmit_cont_cls, &pid, GNUNET_OK);
-#if DEBUG_wlan
GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
"called pm->transmit_cont for %p\n", session);
-#endif
}
else
{
-#if DEBUG_wlan
GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
"no pm->transmit_cont for %p\n", session);
-#endif
}
GNUNET_free (pm);
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;
+ struct AckSendQueue *ack;
+ struct Finish_send *finish;
-#if DEBUG_wlan
+ 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->hdr->size) - sizeof (struct Radiotap_Send));
-#endif
-
- GNUNET_assert (plugin != NULL);
- GNUNET_STATISTICS_update (plugin->env->stats, _("# wlan acks send"), 1, GNUNET_NO);
-
- getRadiotapHeader (plugin, ack->endpoint, ack->radioHeader);
- getWlanHeader (ack->ieeewlanheader, &ack->endpoint->addr, plugin,
- ntohs (ack->hdr->size));
-
+ 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->hdr,
- ntohs (ack->hdr->size));
+ GNUNET_DISK_file_write (plugin->server_stdin_handle, ack->radioHeader,
+ ntohs (ack->radioHeader->header.size));
if (bytes == GNUNET_SYSERR)
{
GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, PLUGIN_LOG_NAME,
_
- ("Error writing to wlan healper. errno == %d, ERROR: %s\n"),
+ ("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 != GNUNET_SYSERR);
- GNUNET_assert (bytes == ntohs (ack->hdr->size));
+ 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
do_transmit (void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
{
struct Plugin *plugin = cls;
- 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;
+ GNUNET_assert (plugin != NULL);
+ plugin->server_write_task = GNUNET_SCHEDULER_NO_TASK;
+ if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
+ return;
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);
+ 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)
{
send_hello_beacon (plugin);
return;
}
-
- if (plugin->sending_messages_head != NULL)
+ if (NULL == plugin->sending_messages_head)
{
- 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);
-
-#if DEBUG_wlan
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
- "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);
+ /* 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)
{
GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, PLUGIN_LOG_NAME,
- _
- ("Error writing to wlan healper. errno == %d, ERROR: %s\n"),
- errno, strerror (errno));
- //TODO START NEW WLAN HELPER
- /*
- * alle sessions beenden
- * neu starten (alle 5 sec)
- * alles bis dahin ablehnen
- */
- }
- //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;
+ _
+ ("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);
}
else
{
- GNUNET_free (fm->frag);
- fm->frag = NULL;
- set_next_send (plugin);
- }
- GNUNET_FRAGMENT_context_transmission_done (fm->fragcontext);
- return;
+ 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);
+ }
}
-
- GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, PLUGIN_LOG_NAME,
- "do_transmit did nothing, should not happen!\n");
+ 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
if (addrlen == 6)
{
/* TODO check for bad addresses like multicast, broadcast, etc */
-#if DEBUG_wlan
GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
- "wlan_plugin_address_suggested got good address, size %u!\n", addrlen);
-#endif
+ "wlan_plugin_address_suggested got good address, size %u!\n",
+ addrlen);
return GNUNET_OK;
}
-#if DEBUG_wlan
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
- "wlan_plugin_address_suggested got bad address, size %u!\n", addrlen);
-#endif
+ 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,
+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;
+
GNUNET_assert (plugin != NULL);
- //check if msglen > 0
+ GNUNET_assert (session != NULL);
GNUNET_assert (msgbuf_size > 0);
- //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_from (GNUNET_ERROR_TYPE_ERROR, PLUGIN_LOG_NAME,
- _("Wlan Address len %d is wrong\n"), addrlen);
- return -1;
- }
- }
-
- GNUNET_STATISTICS_update (plugin->env->stats, _("# wlan messages queued"), 1, GNUNET_NO);
-
//queue message:
//queue message in session
//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->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
+ htonl (GNUNET_CRYPTO_crc32_n
((char *) wlanheader, msgbuf_size + sizeof (struct WlanHeader)));
- //GNUNET_log_from(GNUNET_ERROR_TYPE_INFO, PLUGIN_LOG_NAME, "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));
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;
GNUNET_CONTAINER_DLL_insert_tail (session->pending_message_head,
session->pending_message_tail, newmsg);
-#if DEBUG_wlan
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);
-#endif
-#if DEBUG_wlan_msg_dump > 1
+#if DEBUG_WLAN > 1
hexdump (msgbuf, GNUNET_MIN (msgbuf_size, 256));
#endif
//queue session
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
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,
if (pendingsession_tmp->content == queue->content)
{
plugin->pendingsessions--;
- GNUNET_STATISTICS_set(plugin->env->stats, _("# wlan pending sessions"), plugin->pendingsessions, GNUNET_NO);
+ 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);
while (fm != NULL)
{
fmnext = fm->next;
- if (fm->session == queue->content)
- {
- free_fragment_message (plugin, fm);
- }
+ if (fm->session == queue->content)
+ free_fragment_message (plugin, fm);
fm = fmnext;
}
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);
+ GNUNET_assert (search_session (plugin, endpoint, &queue->content->target) ==
+ NULL);
if (endpoint->sessions_head == NULL && do_free_macendpoint == GNUNET_YES)
{
free_macendpoint (plugin, endpoint);
//check if no endpoint with the same address exists
- GNUNET_assert(get_macendpoint(plugin, &endpoint->addr, GNUNET_NO) == NULL);
+ 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);
const unsigned char *input;
//GNUNET_assert(cls !=NULL);
- if (addrlen != sizeof(struct MacAddress))
+ if (addrlen != sizeof (struct GNUNET_TRANSPORT_WLAN_MacAddress))
{
/* invalid address (MAC addresses have 6 bytes) */
//GNUNET_break (0);
-#if DEBUG_wlan
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
- "Func wlan_plugin_address_pretty_printer got size: %u, worng size!\n",
- addrlen);
-#endif
- asc(asc_cls, NULL);
+ 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]);
-#if DEBUG_wlan
+ "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);
-#endif
- asc ( asc_cls, ret);
+ asc (asc_cls, ret);
//only one mac address per plugin
- asc ( asc_cls, NULL);
+ asc (asc_cls, NULL);
}
if (ntohs (hdr->type) == GNUNET_MESSAGE_TYPE_WLAN_DATA)
{
-#if DEBUG_wlan
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));
-#endif
if (ntohs (hdr->size) <
sizeof (struct WlanHeader) + sizeof (struct GNUNET_MessageHeader))
return;
}
- GNUNET_STATISTICS_update (plugin->env->stats, _("# wlan whole messages received"), 1, GNUNET_NO);
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ _("# wlan whole messages received"), 1,
+ GNUNET_NO);
wlanheader = (struct WlanHeader *) hdr;
session = search_session (plugin, endpoint, &wlanheader->source);
temp_hdr = (const struct GNUNET_MessageHeader *) &wlanheader[1];
crc = ntohl (wlanheader->crc);
wlanheader->crc = 0;
- if (getcrc32 ((char *) wlanheader, ntohs (wlanheader->header.size)) != crc)
+ 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",
- getcrc32 ((char *) wlanheader,
- ntohs (wlanheader->header.size)), crc);
+ 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)
{
-#if DEBUG_wlan
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));
-#endif
//try if it is a hello message
if (ntohs (wlanheader->header.size) >=
ntohs (temp_hdr->size) + sizeof (struct WlanHeader))
sizeof (struct GNUNET_PeerIdentity)) != 0)
{
//wrong peer id
-#if DEBUG_wlan
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);
-#endif
return;
}
sizeof (struct GNUNET_PeerIdentity)) != 0)
{
//wrong peer id
-#if DEBUG_wlan
GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
"WLAN peer target id doesn't match our peer id: session %p\n",
session);
-#endif
return;
}
GNUNET_assert (cls != NULL);
struct Session *session = (struct Session *) client;
struct Plugin *plugin = (struct Plugin *) cls;
+ struct GNUNET_ATS_Information ats[2];
- struct GNUNET_ATS_Information distance;
-
- distance.type = htonl (GNUNET_ATS_QUALITY_NET_DISTANCE);
- distance.value = htonl (1);
+ 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);
-#if DEBUG_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));
-#endif
-
plugin->env->receive (plugin->env->cls, &(session->target), hdr,
- (const struct GNUNET_ATS_Information *)
- &distance, 1, session,
- (const char *) &session->mac->addr,
+ (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 pointer to the struct holding known informations
* @param hdr hdr of the GNUNET_MessageHeader
- * @param rxinfo pointer to the radiotap informations got with this packet
+ * @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,
+wlan_data_helper (void *cls,
const struct GNUNET_MessageHeader *hdr,
- const struct Radiotap_rx *rxinfo)
+ const struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage *rxinfo)
{
struct Plugin *plugin = cls;
struct FragmentMessage *fm;
struct FragmentMessage *fm2;
struct GNUNET_PeerIdentity tmpsource;
+ struct MacEndpoint *macendpoint;
+ struct Session *session;
- GNUNET_assert(plugin != NULL);
+ // NOTE: session_light->addr = rxinfo->frame.addr2;
+ macendpoint = get_macendpoint (plugin, &rxinfo->frame.addr2, GNUNET_YES);
- //ADVERTISEMENT
- if (ntohs (hdr->type) == GNUNET_MESSAGE_TYPE_HELLO)
+ switch (ntohs (hdr->type))
{
-
+ case GNUNET_MESSAGE_TYPE_HELLO:
+ //ADVERTISEMENT
//TODO better DOS protection, error handling
- //TODO test first than create session
- GNUNET_assert (session_light != NULL);
-
-#if DEBUG_wlan
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
- "Func wlan_data_helper got GNUNET_MESSAGE_TYPE_HELLO 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_YES);
- }
-
-
+ //TODO test first then create session
if (GNUNET_HELLO_get_id
- ((const struct GNUNET_HELLO_Message *) hdr,
- &tmpsource) == GNUNET_OK)
- {
- session_light->session = search_session (plugin, session_light->macendpoint, &tmpsource);
- if (session_light->session == NULL)
- {
- session_light->session = create_session (plugin, session_light->macendpoint, &tmpsource);
- }
- GNUNET_STATISTICS_update (plugin->env->stats, _("# wlan hello messages received"), 1, GNUNET_NO);
- plugin->env->receive(plugin->env->cls,&session_light->session->target,hdr, NULL, 0, session_light->session,
- (const char *) &session_light->session->mac->addr,
- sizeof (session_light->session->mac->addr));
+ ((const struct GNUNET_HELLO_Message *) hdr, &tmpsource) == GNUNET_OK)
+ {
+ 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));
}
else
{
GNUNET_log_from (GNUNET_ERROR_TYPE_WARNING, PLUGIN_LOG_NAME,
- "WLAN client not in session list and hello message is not okay\n");
+ "WLAN client not in session list and HELLO message is not okay\n");
return;
}
- }
-
- //FRAGMENT
-
- else if (ntohs (hdr->type) == GNUNET_MESSAGE_TYPE_FRAGMENT)
- {
-
- 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_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
- "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
-
- GNUNET_STATISTICS_update (plugin->env->stats, _("# wlan fragments received"), 1, GNUNET_NO);
+ 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 (session_light->macendpoint->defrag,
+ GNUNET_DEFRAGMENT_process_fragment (macendpoint->defrag,
hdr);
if (ret == GNUNET_NO)
{
- session_light->macendpoint->dups++;
+ macendpoint->dups++;
}
else if (ret == GNUNET_OK)
{
- session_light->macendpoint->fragc++;
+ macendpoint->fragc++;
}
set_next_send (plugin);
-
- }
-
- //ACK
-
- else if (ntohs (hdr->type) == GNUNET_MESSAGE_TYPE_FRAGMENT_ACK)
- {
- 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)
+ break;
+ case GNUNET_MESSAGE_TYPE_FRAGMENT_ACK:
+ if (NULL == macendpoint)
{
-#if DEBUG_wlan
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,
- session_light->addr.mac,
+ &rxinfo->frame.addr2.mac,
6));
-#endif
return;
}
-
-#if DEBUG_wlan
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
- "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;
+ fm = macendpoint->sending_messages_head;
while (fm != NULL)
{
fm2 = fm->next;
- GNUNET_STATISTICS_update (plugin->env->stats, _("# wlan acks received"), 1, GNUNET_NO);
+ GNUNET_STATISTICS_update (plugin->env->stats, _("# wlan acks received"),
+ 1, GNUNET_NO);
int ret = GNUNET_FRAGMENT_process_ack (fm->fragcontext, hdr);
if (ret == GNUNET_OK)
{
-#if DEBUG_wlan_retransmission > 1
GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
"Got last ack, finished fragment message %p\n", fm);
-#endif
- session_light->macendpoint->acks++;
+ macendpoint->acks++;
fm->session->last_activity = GNUNET_TIME_absolute_get ();
- session_light->macendpoint->last_activity = fm->session->last_activity;
+ macendpoint->last_activity = fm->session->last_activity;
free_fragment_message (plugin, fm);
check_fragment_queue (plugin);
return;
}
if (ret == GNUNET_NO)
{
-#if DEBUG_wlan_retransmission > 1
GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
"Got ack for: %p\n", fm);
-#endif
- session_light->macendpoint->acks++;
+ macendpoint->acks++;
return;
}
- if (ret == GNUNET_SYSERR)
- {
-
- }
-
fm = fm2;
}
-
-#if DEBUG_wlan_retransmission > 1
GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
"WLAN fragment not in fragment list\n");
-#endif
return;
-
- }
- else
- {
+ 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",
GNUNET_break (0);
return;
}
-
-#if 0
GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
"Helper finished\n");
-#endif
-
}
/**
- * Function to print mac addresses nice *
- * @param pointer to 6 byte with the mac address
- * @return pointer to the chars which hold the print out
+ * 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
*/
-const char *
-macprinter (const u_int8_t * mac)
+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;
}
(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);
+ 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
* @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));
- GNUNET_assert(plugin != NULL);
- GNUNET_STATISTICS_update (plugin->env->stats, _("# wlan mac endpoints created"), 1, GNUNET_NO);
+ 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);
plugin->mac_count++;
+ 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);
-#if DEBUG_wlan
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));
-#endif
return newend;
}
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_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;
- GNUNET_assert(plugin != NULL);
+ GNUNET_assert (plugin != NULL);
switch (ntohs (hdr->type))
{
- case GNUNET_MESSAGE_TYPE_WLAN_HELPER_DATA:
-#if DEBUG_wlan
+ case GNUNET_MESSAGE_TYPE_WLAN_DATA_FROM_HELPER:
GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
- "Func wlan_process_helper got GNUNET_MESSAGE_TYPE_WLAN_HELPER_DATA size: %u\n",
+ "Got data message from helper with %u bytes\n",
ntohs (hdr->size));
-#endif
-
- GNUNET_STATISTICS_update (plugin->env->stats, _("# wlan WLAN_HELPER_DATA received"), 1, GNUNET_NO);
+ 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) + 2*sizeof (struct GNUNET_MessageHeader) +
- sizeof (struct Radiotap_rx))
+ if (ntohs (hdr->size) < sizeof (struct GNUNET_TRANSPORT_WLAN_RadiotapReceiveMessage))
{
-#if DEBUG_wlan
GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
- "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);
+ "Size of packet is too small; size: %u\n",
+ ntohs (hdr->size));
+ GNUNET_break (0);
/* FIXME: restart SUID process */
return;
}
- rxinfo = (struct Radiotap_rx *) &hdr[1];
- wlanIeeeHeader = (struct ieee80211_frame *) &rxinfo[1];
-
+ 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)
+ (&rxinfo->frame.addr3, &mac_bssid_gnunet,
+ 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))
+ (&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))
{
- //if packet is from us return
- if ((memcmp (&(wlanIeeeHeader->i_addr2), &(plugin->mac_address),
- sizeof (struct MacAddress)) == 0)){
- return;
- }
- // 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);
- GNUNET_STATISTICS_update (plugin->env->stats, _("# wlan messaged for this client received"), 1, GNUNET_NO);
-
+ //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;
- while (pos < datasize)
+ end = (const char*) &rxinfo[1];
+ while (pos < datasize - sizeof (struct GNUNET_MessageHeader))
{
- temp_hdr = (struct GNUNET_MessageHeader *) &wlanIeeeHeader[1] + pos;
- if (ntohs(temp_hdr->size) <= datasize + pos)
- {
- GNUNET_STATISTICS_update (plugin->env->stats, _("# wlan messaged inside WLAN_HELPER_DATA received"), 1, GNUNET_NO);
- wlan_data_helper (plugin, session_light, temp_hdr, rxinfo);
- }
+ temp_hdr = (struct GNUNET_MessageHeader *) &end[pos];
+ if (ntohs (temp_hdr->size) <= datasize - pos)
+ {
+ GNUNET_STATISTICS_update (plugin->env->stats,
+ _
+ ("# wlan messages inside WLAN_HELPER_DATA received"),
+ 1, GNUNET_NO);
+ wlan_data_helper (plugin, temp_hdr, rxinfo);
+ }
else
- {
-#if DEBUG_wlan
+ {
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);
-#endif
- }
+ "Size of packet is too small; size: %u > size of packet: %u\n",
+ ntohs (temp_hdr->size), datasize - pos);
+ }
pos += ntohs (temp_hdr->size);
-
}
-
- //clean up
- GNUNET_free (session_light);
}
else
{
-#if DEBUG_wlan
GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
"Func wlan_process_helper got wrong MAC: %s\n",
- macprinter (wlanIeeeHeader->i_addr1));
-#endif
+ macprinter (&rxinfo->frame.addr1));
}
}
else
{
-#if DEBUG_wlan
GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
"Func wlan_process_helper got wrong BSSID: %s\n",
- macprinter (wlanIeeeHeader->i_addr2));
-#endif
+ macprinter (&rxinfo->frame.addr2));
}
break;
case GNUNET_MESSAGE_TYPE_WLAN_HELPER_CONTROL:
//TODO more control messages
- if (ntohs (hdr->size) != sizeof (struct Wlan_Helper_Control_Message))
+ if (ntohs (hdr->size) != sizeof (struct GNUNET_TRANSPORT_WLAN_HelperControlMessage))
{
GNUNET_break (0);
/* FIXME: restart SUID process */
return;
}
- memcpy (&plugin->mac_address, &hdr[1], sizeof (struct MacAddress));
-#if DEBUG_wlan
+ 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
- MacAddress)));
-#endif
+ sizeof (struct GNUNET_TRANSPORT_WLAN_MacAddress)));
plugin->env->notify_address (plugin->env->cls, GNUNET_YES,
&plugin->mac_address,
- sizeof (struct MacAddress));
+ sizeof (struct GNUNET_TRANSPORT_WLAN_MacAddress));
break;
default:
-#if DEBUG_wlan
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));
-
-#endif
-#if DEBUG_wlan_msg_dump > 1
- hexdump (hdr, GNUNET_MIN (ntohs (hdr->size), 256));
-#endif
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_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
- _
- ("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_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
- "Starting gnunet-wlan-helper process cmd: %s %s %i\n",
- filenamehw, plugin->interface, testmode);
-#endif
-
- if (GNUNET_OS_check_helper_binary (filenamehw) == GNUNET_YES)
- {
- plugin->server_proc =
- GNUNET_OS_start_process (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-transport-wlan-helper 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-transport-wlan-helper not found, please look if it exists and is the $PATH variable!\n");
- GNUNET_break (0);
- }
-
- }
- else if (testmode == 1)
- {
-
-#if DEBUG_wlan
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
- "Starting gnunet-wlan-helper loopback 1 process cmd: %s %s %i\n",
- filenameloopback, plugin->interface, testmode);
-#endif
-
- if (GNUNET_OS_check_helper_binary (filenameloopback) != GNUNET_SYSERR)
- {
- plugin->server_proc =
- GNUNET_OS_start_process (plugin->server_stdin, plugin->server_stdout,
- filenameloopback, filenameloopback, "1",
- NULL);
- }
- else
- {
- GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, PLUGIN_LOG_NAME,
- "gnunet-transport-wlan-helper-dummy not found, please look if it exists and is the $PATH variable!\n");
- GNUNET_break (0);
- }
- }
- else if (testmode == 2)
- {
-#if DEBUG_wlan
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
- "Starting gnunet-wlan-helper loopback 2 process cmd: %s %s %i\n",
- filenameloopback, plugin->interface, testmode);
-#endif
- if (GNUNET_OS_check_helper_binary (filenameloopback) != GNUNET_SYSERR)
- {
- plugin->server_proc =
- GNUNET_OS_start_process (plugin->server_stdin, plugin->server_stdout,
- filenameloopback, filenameloopback, "2",
- NULL);
- }
- else
- {
- GNUNET_log_from (GNUNET_ERROR_TYPE_ERROR, PLUGIN_LOG_NAME,
- "gnunet-transport-wlan-helper-dummy not found, please look if it exists and is in the $PATH variable!\n");
- GNUNET_break (0);
- }
- }
- if (plugin->server_proc == NULL)
- {
-#if DEBUG_wlan
- GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
- "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_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
- "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)
{
struct GNUNET_TRANSPORT_PluginFunctions *api = cls;
struct Plugin *plugin = api->cls;
- struct MacEndpoint *endpoint = plugin->mac_head;
+ struct MacEndpoint *endpoint;
struct MacEndpoint *endpoint_next;
-#if DEBUG_wlan
+ 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");
-#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);
+ wlan_transport_stop_wlan_helper (plugin);
GNUNET_assert (cls != NULL);
//free sessions
+ endpoint = plugin->mac_head;
while (endpoint != NULL)
{
endpoint_next = endpoint->next;
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;
- }
-
if (plugin->suid_tokenizer != NULL)
GNUNET_SERVER_mst_destroy (plugin->suid_tokenizer);
return NULL;
}
+
/**
* Entry point for the plugin.
*
void *
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);
+ 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;
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;
{
if (GNUNET_SYSERR ==
GNUNET_CONFIGURATION_get_value_number (env->cfg, "transport-wlan",
- "TESTMODE", &testmode))
- testmode = 0; //default value
+ "TESTMODE", &(plugin->testmode)))
+ plugin->testmode = 0; //default value
}
if (GNUNET_CONFIGURATION_have_value (env->cfg, "transport-wlan", "INTERFACE"))
}
//start the plugin
- wlan_transport_start_wlan_helper (plugin, testmode);
+ wlan_transport_start_wlan_helper (plugin);
set_next_beacon_time (plugin);
- set_next_send(plugin);
-#if DEBUG_wlan
+ set_next_send (plugin);
GNUNET_log_from (GNUNET_ERROR_TYPE_DEBUG, PLUGIN_LOG_NAME,
"wlan init finished\n");
-#endif
-
return api;
}
+
+
+
/* end of plugin_transport_wlan.c */
projects / oweals / gnunet.git / blobdiff