/*
- This file is part of GNUnet
- (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Christian Grothoff (and other contributing authors)
-
- GNUnet is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published
- by the Free Software Foundation; either version 3, or (at your
- option) any later version.
-
- GNUnet is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with GNUnet; see the file COPYING. If not, write to the
- Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA.
-*/
+ This file is part of GNUnet
+ (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 Christian Grothoff (and other contributing authors)
+
+ GNUnet is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published
+ by the Free Software Foundation; either version 3, or (at your
+ option) any later version.
+
+ GNUnet is distributed in the hope that it will be useful, but
+ WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with GNUnet; see the file COPYING. If not, write to the
+ Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA.
+ */
/**
* @file transport/plugin_transport_wlan.c
#include "plugin_transport_wlan.h"
#include "gnunet_common.h"
#include "gnunet_crypto_lib.h"
+#include "gnunet_fragmentation_lib.h"
+//#include "wlan/ieee80211.h"
+//#include <netinet/ip.h>
+
+#include <string.h>
#define PROTOCOL_PREFIX "wlan"
/**
* Max size of packet from helper
*/
-#define WLAN_MTU 3000
+#define WLAN_MTU 1450
/**
* Time until retransmission of a fragment in ms
*/
-#define FRAGMENT_TIMEOUT GNUNET_TIME_UNIT_SECONDS
+#define FRAGMENT_TIMEOUT GNUNET_TIME_UNIT_SECONDS
+/**
+ * max size of fragment queue
+ */
#define FRAGMENT_QUEUE_SIZE 10
+/**
+ * max messages in fragment queue per session/client
+ */
+#define FRAGMENT_QUEUE_MESSAGES_OUT_PER_SESSION 1
-#define DEBUG_wlan GNUNET_YES
+/**
+ * max messages in fragment queue per MAC
+ */
+#define FRAGMENT_QUEUE_MESSAGES_OUT_PER_MACENDPOINT 1
-#define MESSAGE_LENGHT_UNKNOWN -1
-#define NO_MESSAGE_OR_MESSAGE_FINISHED -2
+/**
+ * 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
*/
#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.
*/
};
-
/**
* Encapsulation of all of the state of the plugin.
*/
struct GNUNET_TRANSPORT_PluginEnvironment *env;
/**
- * List of open sessions. head
+ * List of open connections. head
*/
- struct Sessionqueue *sessions;
+ struct MacEndpoint * mac_head;
/**
- * List of open sessions. tail
+ * List of open connections. tail
*/
- struct Sessionqueue *sessions_tail;
+ struct MacEndpoint * mac_tail;
/**
- * Number of sessions
+ * Number of connections
*/
-
- int session_count;
+ unsigned int mac_count;
/**
- * encapsulation to the local wlan server prog
+ * encapsulation of data from the local wlan helper program
*/
+ struct GNUNET_SERVER_MessageStreamTokenizer * suid_tokenizer;
- struct GNUNET_SERVER_MessageStreamTokenizer * consoltoken;
-
+ /**
+ * encapsulation of packets received from the wlan helper
+ */
+ struct GNUNET_SERVER_MessageStreamTokenizer * data_tokenizer;
/**
* stdout pipe handle for the gnunet-wlan-helper process
/**
* Sessions currently pending for transmission
- * to this peer, if any.
+ * to a peer, if any.
*/
- struct Sessionqueue * pending_Sessions;
+ struct Sessionqueue * pending_Sessions_head;
/**
- * Sessions currently pending for transmission
- * to this peer (tail), if any.
- */
+ * Sessions currently pending for transmission
+ * to a peer (tail), if any.
+ */
struct Sessionqueue * pending_Sessions_tail;
/**
unsigned int pendingsessions;
/**
- * Messages in the fragmentation queue, head
+ * Messages in the sending queues
*/
-
- struct FragmentMessage * pending_Fragment_Messages_head;
+ int pending_Fragment_Messages;
/**
- * Messages in the fragmentation queue, tail
+ * messages ready for send, head
*/
-
- struct FragmentMessage * pending_Fragment_Messages_tail;
-
+ struct FragmentMessage_queue * sending_messages_head;
/**
- * number of pending fragment message
- */
-
- unsigned int pending_fragment_messages;
-
+ * messages ready for send, tail
+ */
+ struct FragmentMessage_queue * sending_messages_tail;
/**
* time of the next "hello-beacon"
*/
-
struct GNUNET_TIME_Absolute beacon_time;
+ /**
+ * queue to send acks for received fragments (head)
+ */
+ struct AckSendQueue * ack_send_queue_head;
+
+ /**
+ * queue to send acks for received fragments (tail)
+ */
+ struct AckSendQueue * ack_send_queue_tail;
+
+ /**
+ * Tracker for bandwidth limit
+ */
+ struct GNUNET_BANDWIDTH_Tracker tracker;
};
+/**
+ * Struct to store data if file write did not accept the whole packet
+ */
struct Finish_send
{
struct Plugin * plugin;
/**
* Queue of sessions, for the general session queue and the pending session queue
*/
-
+//TODO DOXIGEN
struct Sessionqueue
{
- struct Sessionqueue * next;
- struct Sessionqueue * prev;
- struct Session * content;
+ struct Sessionqueue * next;
+ struct Sessionqueue * prev;
+ struct Session * content;
};
/**
- * Queue of ack received for messages send
+ * Queue of fragmented messages, for the sending queue of the plugin
*/
-
-struct AckQueue
+//TODO DOXIGEN
+struct FragmentMessage_queue
{
- struct AckQueue * next;
- struct AckQueue * prev;
- int fragment_num; //TODO change it to offset if better
+ struct FragmentMessage_queue * next;
+ struct FragmentMessage_queue * prev;
+ struct FragmentMessage * content;
};
-
-
/**
* Queue for the fragments received
*/
+//TODO DOXIGEN
+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;
+};
+
+//TODO DOXIGEN
+struct MacEndpoint_id_fragment_triple
+{
+ struct MacEndpoint * endpoint;
+ uint32_t message_id;
+ struct FragmentMessage * fm;
+};
-struct RecQueue
+//TODO DOXIGEN
+struct Plugin_Session_pair
{
- struct RecQueue * next;
- struct RecQueue * prev;
- uint16_t num;
- const char * msg;
- uint16_t size;
+ struct Plugin * plugin;
+ struct Session * session;
};
/**
*/
struct PendingMessage
{
+ /**
+ * dll next
+ */
+ struct PendingMessage * next;
+ /**
+ * dll prev
+ */
+ struct PendingMessage * prev;
/**
* The pending message
*/
- char *msg;
+ struct WlanHeader *msg;
+
+ /**
+ * Size of the message
+ */
+ size_t message_size;
/**
* Continuation function to call once the message
*/
struct GNUNET_TIME_Absolute timeout;
+};
+
+/**
+ * Queue for acks to send for fragments recived
+ */
+struct AckSendQueue
+{
+
/**
- * Size of the message
+ * next ack in the ack send queue
*/
- size_t message_size;
+ 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
+ */
+ struct Radiotap_Send * radioHeader;
};
/**
/**
* peer mac address
*/
- uint8_t addr[6];
+ struct MacAddress addr;
+
+ /**
+ * mac endpoint
+ */
+ struct MacEndpoint * macendpoint;
};
/**
struct SessionHeader header;
/**
- * Pointer to the global plugin struct.
+ * Message currently pending for transmission
+ * to this peer, if any. head
*/
- struct Plugin *plugin;
+ struct PendingMessage * pending_message_head;
/**
* Message currently pending for transmission
- * to this peer, if any.
+ * to this peer, if any. tail
*/
- struct PendingMessage *pending_message;
+ struct PendingMessage * pending_message_tail;
/**
* To whom are we talking to (set to our identity
struct GNUNET_PeerIdentity target;
/**
- * encapsulation of the receive data
+ * Address of the other peer (either based on our 'connect'
+ * call or on our 'accept' call).
*/
- //struct GNUNET_SERVER_MessageStreamTokenizer * receive_token;
+ void *connect_addr;
/**
- * offset of the next fragment for the receive_token, -1 means last message finished
+ * Last activity on this connection. Used to select preferred
+ * connection.
*/
-
- //int rec_offset;
+ struct GNUNET_TIME_Absolute last_activity;
/**
- * size of the message received,
- * MESSAGE_LENGHT_UNKNOWN means that the size is not known,
- * NO_MESSAGE_OR_MESSAGE_FINISHED means no message received
+ * peer connection
*/
-
- int rec_size;
+ struct MacEndpoint * mac;
/**
- * Sorted queue with the fragments received; head
+ * count of messages in the fragment out queue for this session
*/
- struct RecQueue * frag_head;
+ int fragment_messages_out_count;
+};
+
+/**
+ * Struct to represent one network card connection
+ */
+struct MacEndpoint
+{
/**
- * Sorted queue with the fragments received; tail
+ * Pointer to the global plugin struct.
*/
-
- struct RecQueue * frag_tail;
-
+ struct Plugin *plugin;
/**
- * peer mac address
+ * Struct to hold the session reachable over this mac; head
*/
- char addr[6];
-
+ struct Sessionqueue * sessions_head;
/**
- * Address of the other peer (either based on our 'connect'
- * call or on our 'accept' call).
+ * Struct to hold the session reachable over this mac; tail
*/
- void *connect_addr;
-
+ struct Sessionqueue * sessions_tail;
/**
- * Last activity on this connection. Used to select preferred
- * connection.
+ * Messages currently sending
+ * to a peer, if any.
*/
- struct GNUNET_TIME_Absolute last_activity;
+ struct FragmentMessage * sending_messages_head;
/**
- * current number for message incoming, to distinguish between the messages
+ * Messages currently sending
+ * to a peer (tail), if any.
*/
- uint32_t message_id_in;
-
+ struct FragmentMessage * sending_messages_tail;
/**
- * current number for message outgoing, to distinguish between the messages
+ * dll next
*/
- uint32_t message_id_out;
-
+ struct MacEndpoint *next;
/**
- * does this session have a message in the fragment queue
+ * dll prev
*/
+ struct MacEndpoint *prev;
- int has_fragment;
-
-};
-
-
-
-
-struct FragmentMessage
-{
- /**
- * Session this message belongs to
- */
-
- struct Session *session;
-
- /**
- * This is a doubly-linked list.
- */
- struct FragmentMessage *next;
-
- /**
- * This is a doubly-linked list.
- */
- struct FragmentMessage *prev;
-
- /**
- * The pending message
- */
- char *msg;
-
- /**
- * Timeout value for the pending message.
- */
- struct GNUNET_TIME_Absolute timeout;
-
- /**
- * Timeout value for the pending fragments.
- * Stores the time when the next msg fragment ack has to be received
- */
- struct GNUNET_TIME_Absolute next_ack;
-
- /**
- * Sorted queue with the acks received for fragments; head
- */
-
- struct AckQueue * head;
-
- /**
- * Sorted queue with the acks received for fragments; tail
- */
-
- struct AckQueue * tail;
-
- /**
- * Size of the message
- */
- size_t message_size;
+ /**
+ * peer mac address
+ */
+ struct MacAddress addr;
- /**
- * pos / next fragment number in the message, for fragmentation/segmentation,
- * some acks can be missing but there is still time
- */
- uint32_t message_pos;
+ /**
+ * Defrag context for this mac endpoint
+ */
+ struct GNUNET_DEFRAGMENT_Context * defrag;
-};
+ /**
+ * count of messages in the fragment out queue for this mac endpoint
+ */
-/**
- * Header for messages which need fragmentation
- */
-struct WlanHeader
-{
+ int fragment_messages_out_count;
- struct GNUNET_MessageHeader header;
+ //TODO DOXIGEN
+ uint8_t rate;
+ uint16_t tx_power;
+ uint8_t antenna;
/**
- * checksum/error correction
+ * Duplicates received
*/
- uint32_t crc GNUNET_PACKED;
+ int dups;
/**
- * To whom are we talking to (set to our identity
- * if we are still waiting for the welcome message)
+ * Fragments received
*/
- struct GNUNET_PeerIdentity target;
-
- // followed by payload
+ int fragc;
+ /**
+ * Acks received
+ */
+ int acks;
};
/**
- * Header for messages which need fragmentation
+ * Struct for Messages in the fragment queue
*/
-struct FragmentationHeader
-{
- struct GNUNET_MessageHeader header;
+struct FragmentMessage
+{
/**
- * To whom are we talking to (set to our identity
- * if we are still waiting for the welcome message)
+ * Session this message belongs to
*/
- // struct GNUNET_PeerIdentity target GNUNET_PACKED;
+
+ struct Session *session;
/**
- * ID of message, to distinguish between the messages, picked randomly.
+ * This is a doubly-linked list.
*/
- uint32_t message_id GNUNET_PACKED;
+ struct FragmentMessage *next;
/**
- * Offset or number of this fragment, for fragmentation/segmentation (design choice, TBD)
+ * This is a doubly-linked list.
*/
- uint16_t fragment_off_or_num GNUNET_PACKED;
+ struct FragmentMessage *prev;
/**
- * CRC of fragment (for error checking)
+ * Timeout value for the pending message.
*/
- uint16_t message_crc GNUNET_PACKED;
+ struct GNUNET_TIME_Absolute timeout;
/**
- * Flags
- * // 0x1 ack => Use two different message types in header.type! (FRAG_MESSAGE; FRAG_ACK)
- * // 0x2 has data (not only ack)
- * // 0x4 last fragment of message
- * // 0x8 new message
+ * Fragmentation context
*/
- // uint32_t flags GNUNET_PACKED;
+ struct GNUNET_FRAGMENT_Context * fragcontext;
/**
- * checksum/error correction
+ * Fragment to send
*/
- // uint32_t crc GNUNET_PACKED;
+ char * frag;
- // followed by payload unless ACK
+ /**
+ * 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;
};
-//enum { ACK_FRAGMENT = 1, DATA_FRAGMENT = 2, LAST_FRAGMENT = 4, NEW_MESSAGE = 8 };
-
-int
-getRadiotapHeader(struct RadiotapHeader * Header);
-
-int
-getWlanHeader(struct IeeeHeader * Header);
-
-static int
-wlan_plugin_address_suggested(void *cls, const void *addr, size_t addrlen);
-
-uint16_t
-getcrc16(const char *msgbuf, size_t msgbuf_size);
-
static void
do_transmit(void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
-
static void
-check_fragment_queue(struct Plugin * plugin);
+free_session(struct Plugin * plugin, struct Sessionqueue * queue,
+ int do_free_macendpoint);
+static struct MacEndpoint *
+create_macendpoint(struct Plugin *plugin, const struct MacAddress *addr);
-uint32_t
-getcrc32(const char *msgbuf, size_t msgbuf_size);
+/**
+ * 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)
+{
+ char line[80];
+ char *src = (char*) mem;
-static void
-free_rec_frag_queue(struct Session * session);
+ 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;
-static void
-wlan_data_helper(void *cls, void * client, const struct GNUNET_MessageHeader * hdr);
+ for (i = 0; i < length; i += 16, src += 16)
+ {
+ char *t = line;
-static void
-wlan_process_helper (void *cls,
- void *client,
- const struct GNUNET_MessageHeader *hdr);
+ 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 ? " " : "-");
+ }
-static void
-finish_sending(void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc);
+ 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, " ");
+ }
+ }
-/**
- * get the next message number, at the moment just a random one
- * @return returns the next valid message-number for sending packets
- */
-uint32_t
-get_next_message_id()
-{
- return GNUNET_CRYPTO_random_u32(GNUNET_CRYPTO_QUALITY_NONCE, UINT32_MAX);
+ t += sprintf(t, "\r\n");
+ printf("%s", line);
+ }
}
/**
- * start next message number generator
- * (not necessary at the moment)
+ * Function to find a MacEndpoint with a specific mac addr
+ * @param plugin pointer to the plugin struct
+ * @param addr pointer to the mac address
+ * @param create_new GNUNET_YES if a new end point should be created
+ * @return
*/
-void
-start_next_message_id()
+static struct MacEndpoint *
+get_macendpoint(struct Plugin *plugin, const struct MacAddress *addr,
+ int create_new)
{
- //GNUNET_CRYPTO_random_init;
-}
+ 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;
+ }
+
+ if (create_new == GNUNET_YES)
+ {
+ return create_macendpoint(plugin, addr);
+ }
+ else
+ {
+ return NULL;
+ }
+}
/**
- * search for a session with the addr
+ * search for a session with the addr and peer id
*
* @param plugin pointer to the plugin struct
* @param addr pointer to the mac address of the peer
+ * @param peer pointer to the peerid
* @return returns the session
*/
-
static struct Session *
-search_session(struct Plugin *plugin, const uint8_t * addr)
+search_session(struct Plugin *plugin, const struct MacEndpoint * endpoint,
+ const struct GNUNET_PeerIdentity * peer)
{
- struct Sessionqueue * queue = plugin->sessions;
- struct Sessionqueue * lastitem = NULL;
+ GNUNET_assert(endpoint != NULL);
+ struct Sessionqueue * queue = endpoint->sessions_head;
- //just look at all the session for the needed one
while (queue != NULL)
{
- // content is never NULL
GNUNET_assert (queue->content != NULL);
- char * addr2 = queue->content->addr;
- if (memcmp(addr, addr2, 6) == 0)
- {
- //sesion found
- return queue->content;
- }
- // try next
- lastitem = queue;
+ if (memcmp(peer, &queue->content->target,
+ sizeof(struct GNUNET_PeerIdentity)) == 0)
+ return queue->content; /* session found */
queue = queue->next;
}
return NULL;
}
/**
- * create a new session
+ * Function called for a quick conversion of the binary address to
+ * a numeric address. Note that the caller must not free the
+ * address and that the next call to this function is allowed
+ * to override the address again.
*
- * @param plugin pointer to the plugin struct
- * @param addr pointer to the mac address of the peer
- * @return returns the session
- */
-
+ * @param cls closure
+ * @param addr binary address
+ * @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 char ret[40];
+ const struct MacAddress *mac;
+
+ if (addrlen != sizeof(struct 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]);
+ return ret;
+}
+
+/**
+ * create a new session
+ *
+ * @param plugin pointer to the plugin struct
+ * @param addr pointer to the mac endpoint of the peer
+ * @return returns the session
+ */
+
static struct Session *
-create_session(struct Plugin *plugin,const uint8_t * addr)
+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_CONTAINER_DLL_insert_tail(plugin->sessions, plugin->sessions_tail, queue);
+ GNUNET_CONTAINER_DLL_insert_tail(endpoint->sessions_head, endpoint->sessions_tail, queue);
queue->content = GNUNET_malloc (sizeof (struct Session));
- queue->content->plugin = plugin;
- memcpy(queue->content->addr, addr, 6);
- queue->content->message_id_out = get_next_message_id();
- queue->content->has_fragment = 0;
- queue->content->rec_size = NO_MESSAGE_OR_MESSAGE_FINISHED;
+ 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
- plugin->session_count++;
return queue->content;
}
/**
- * get Session from address, create if no session exists
+ * Get session from address, create if no session exists
*
* @param plugin pointer to the plugin struct
* @param addr pointer to the mac address of the peer
+ * @param peer pointer to the peerid
* @return returns the session
*/
-//TODO add other possibilities to find the right session (are there other?)
static struct Session *
-get_Session(struct Plugin *plugin, const uint8_t * addr)
+get_session(struct Plugin *plugin, const struct MacAddress *addr,
+ const struct GNUNET_PeerIdentity * peer)
{
- struct Session * session = search_session(plugin, addr);
+ struct MacEndpoint * mac;
+ mac = get_macendpoint(plugin, addr, GNUNET_YES);
+ struct Session * session = search_session(plugin, mac, peer);
+
if (session != NULL)
- {
- return session;
- }
- // new session
- return create_session(plugin, addr);
-
- /* -- not needed, layer above already has it--
- //queue welcome message for new sessions, not realy needed
- //struct WelcomeMessage welcome;
- struct PendingMessage *pm;
- pm = GNUNET_malloc (sizeof (struct PendingMessage));
- pm->msg = GNUNET_malloc(GNUNET_HELLO_size(* (plugin->env->our_hello)));
- pm->message_size = GNUNET_HELLO_size(* (plugin->env->our_hello));
- //welcome.header.size = htons (GNUNET_HELLO_size(* (plugin->env->our_hello)));
- //welcome.header.type = htons (GNUNET_MESSAGE_TYPE_WLAN_ADVERTISEMENT);
- //welcome.clientIdentity = *plugin->env->my_identity;
- memcpy ( (pm->msg), * plugin->env->our_hello, GNUNET_HELLO_size(* (plugin->env->our_hello)));
- pm->timeout = GNUNET_TIME_UNIT_FOREVER_ABS;
- queue->content->pending_message = pm;
- plugin->pendingsessions ++;
- GNUNET_CONTAINER_DLL_insert_tail(plugin->pending_Sessions, plugin->pending_Sessions_tail, queue);
-
- check_fragment_queue(plugin);
- */
+ return session;
+ return create_session(plugin, mac, peer);
}
/**
* Queue the session to send data
+ * checks if there is a message pending
+ * checks if this session is not allready in the queue
+ * @param plugin pointer to the plugin
+ * @param session pointer to the session to add
*/
-//TODO doxigen
static void
-queue_Session (struct Plugin *plugin,
- struct Session * session)
+queue_session(struct Plugin *plugin, struct Session * session)
{
- struct Sessionqueue * queue = plugin->pending_Sessions;
- struct Sessionqueue * lastitem = 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
- lastitem = queue;
- queue = queue->next;
- }
-
- // Session is not in the queue
-
- queue = GNUNET_malloc (sizeof (struct Sessionqueue));
- queue->content = session;
-
- //insert at the tail
- GNUNET_CONTAINER_DLL_insert_after (plugin->pending_Sessions,
- plugin->pending_Sessions_tail,
- plugin->pending_Sessions_tail, queue);
- plugin->pendingsessions ++;
+ struct Sessionqueue * queue = plugin->pending_Sessions_head;
-}
+ if (session->pending_message_head != 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;
+ }
+
+ // Session is not in the queue
+
+ 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++;
+ }
-//TODO doxigen
-static void
-free_acks (struct FragmentMessage * fm){
- struct AckQueue * fq;
- while (fm->head != NULL){
- fq = fm->head;
- GNUNET_CONTAINER_DLL_remove(fm->head, fm->tail, fq);
- GNUNET_free(fq);
- }
- //needed?
- fm->head = NULL;
- fm->tail = NULL;
}
-//TODO doxigen
/**
* Function to schedule the write task, executed after a delay
+ * @param cls pointer to the plugin struct
+ * @param tc GNUNET_SCHEDULER_TaskContext pointer
*/
static void
delay_fragment_task(void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
struct Plugin * plugin = cls;
plugin->server_write_delay_task = GNUNET_SCHEDULER_NO_TASK;
- if (tc->reason == GNUNET_SCHEDULER_REASON_SHUTDOWN)
+ if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
return;
// GNUNET_TIME_UNIT_FOREVER_REL is needed to clean up old msg
}
}
-//TODO doxigen
/**
* 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)
{
//under 10 known peers: once a second
- if (plugin->session_count < 10)
+ if (plugin->mac_count < 10)
{
plugin->beacon_time = GNUNET_TIME_absolute_add(
- GNUNET_TIME_absolute_get(), GNUNET_TIME_UNIT_SECONDS);
+ GNUNET_TIME_absolute_get(),
+ GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS,
+ HALLO_BEACON_SCALING_FACTOR));
}
//under 30 known peers: every 10 seconds
- else if (plugin->session_count < 30)
+ 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));
+ GNUNET_TIME_absolute_get(),
+ GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_SECONDS,
+ 10 * HALLO_BEACON_SCALING_FACTOR));
}
//over 30 known peers: once a minute
else
{
plugin->beacon_time = GNUNET_TIME_absolute_add(
- GNUNET_TIME_absolute_get(), GNUNET_TIME_UNIT_MINUTES);
+ GNUNET_TIME_absolute_get(),
+ GNUNET_TIME_relative_multiply(GNUNET_TIME_UNIT_MINUTES,
+ HALLO_BEACON_SCALING_FACTOR));
}
}
-
-//TODO doxigen
-struct GNUNET_TIME_Relative
-get_next_frag_timeout(struct FragmentMessage * fm)
-{
- return GNUNET_TIME_relative_min(GNUNET_TIME_absolute_get_remaining(
- fm->next_ack), GNUNET_TIME_absolute_get_remaining(fm->timeout));
-}
-
-//TODO doxigen
-/**
- * Function to get the timeout value for acks for this session
- */
-
-struct GNUNET_TIME_Relative
-get_ack_timeout (struct FragmentMessage * fm){
- return FRAGMENT_TIMEOUT;
-}
-
-
/**
* Function to set the timer for the next timeout of the fragment queue
* @param plugin the handle to the plugin struct
*/
+
static void
-check_next_fragment_timeout(struct Plugin * const plugin)
+set_next_send(struct Plugin * const plugin)
{
- struct FragmentMessage * fm;
struct GNUNET_TIME_Relative next_send;
- next_send = GNUNET_TIME_absolute_get_remaining(plugin->beacon_time);
-
//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;
}
- fm = plugin->pending_Fragment_Messages_head;
- GNUNET_assert(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;
+ }
//check if there are some fragments in the queue
- if (fm != NULL)
+ else if (plugin->sending_messages_head != NULL)
{
- next_send
- = GNUNET_TIME_relative_min(next_send, get_next_frag_timeout(fm));
+ next_send = GNUNET_TIME_UNIT_ZERO;
}
- plugin->server_write_delay_task = GNUNET_SCHEDULER_add_delayed(next_send,
- &delay_fragment_task, plugin);
-}
+ else
+ {
+ next_send = GNUNET_TIME_absolute_get_remaining(plugin->beacon_time);
+ }
+
+#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);
+ }
+ }
+}
-//TODO doxigen
/**
* Function to get the next queued Session, removes the session from the queue
+ * @param plugin pointer to the plugin struct
+ * @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){
- struct Session * session;
- struct Sessionqueue * sessionqueue;
- struct Sessionqueue * sessionqueue_alt;
- struct PendingMessage * pm;
- sessionqueue = plugin->pending_Sessions;
- while (sessionqueue != NULL){
- session = sessionqueue->content;
- pm = session->pending_message;
-
- //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->has_fragment){
- plugin->pendingsessions --;
- GNUNET_CONTAINER_DLL_remove (plugin->pending_Sessions,
- plugin->pending_Sessions_tail, sessionqueue);
- GNUNET_free(sessionqueue);
-
- return session;
- } else {
- sessionqueue = sessionqueue->next;
- }
- } else {
-
- session->pending_message = NULL;
- //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);
-
- sessionqueue_alt = sessionqueue;
- sessionqueue = sessionqueue->next;
- plugin->pendingsessions --;
- GNUNET_CONTAINER_DLL_remove (plugin->pending_Sessions,
- plugin->pending_Sessions_tail, sessionqueue_alt);
-
- GNUNET_free(sessionqueue_alt);
-
- }
-
-
- }
- return NULL;
-}
+get_next_queue_session(struct Plugin * plugin)
+{
+ struct Session * session;
+ struct Sessionqueue * sessionqueue;
+ struct Sessionqueue * sessionqueue_alt;
+ struct PendingMessage * pm;
+ sessionqueue = plugin->pending_Sessions_head;
+ while (sessionqueue != NULL)
+ {
+ session = sessionqueue->content;
-/**
- * Function to sort the message into the message fragment queue
- * @param plugin the plugin struct
- * @param fm message to sort into the queue
- */
-static void
-sort_fragment_into_queue (struct Plugin * plugin, struct FragmentMessage * fm){
- struct FragmentMessage * fm2;
- //sort into the list at the right position
-
- fm2 = plugin->pending_Fragment_Messages_head;
-
- while (fm2 != NULL){
- if (GNUNET_TIME_absolute_get_difference(fm2->next_ack, fm->next_ack).rel_value == 0){
- break;
- } else {
- fm2 = fm2->next;
- }
- }
-
- GNUNET_CONTAINER_DLL_insert_after(plugin->pending_Fragment_Messages_head,
- plugin->pending_Fragment_Messages_tail,fm2,fm);
+ 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
+
+ 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;
+ }
+ }
+ 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);
+ }
+ }
+
+ }
+ 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)
{
- free_acks(fm);
- GNUNET_free_non_null(fm->msg);
- GNUNET_CONTAINER_DLL_remove (plugin->pending_Fragment_Messages_head,
- plugin->pending_Fragment_Messages_tail, 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);
- plugin->pending_fragment_messages --;
- check_fragment_queue(plugin);
+
+ queue_session(plugin, session);
+#if DEBUG_wlan
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
+ "Free pending fragment messages %p, session %p\n", fm, session);
+#endif
}
}
/**
- * Function to check if there is some space in the fragment queue
- * inserts a message if space is available
- * @param plugin the plugin struct
+ * 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
+ * @return GNUNET_YES at success
*/
+static int
+getRadiotapHeader(struct Plugin * plugin, struct MacEndpoint * endpoint,
+ struct Radiotap_Send * header)
+{
-static void
-check_fragment_queue (struct Plugin * plugin){
- struct Session * session;
- struct FragmentMessage * fm;
-
- struct PendingMessage * pm;
-
- if (plugin->pending_fragment_messages < FRAGMENT_QUEUE_SIZE){
- session = get_next_queue_Session(plugin);
- if (session != NULL){
- pm = session->pending_message;
- session->pending_message = NULL;
- session->has_fragment = 1;
- GNUNET_assert(pm != NULL);
-
- fm = GNUNET_malloc(sizeof(struct FragmentMessage));
- fm->message_size = pm->message_size;
- fm->msg = pm->msg;
- fm->session = session;
- fm->timeout.abs_value = pm->timeout.abs_value;
- fm->message_pos = 0;
- fm->next_ack = GNUNET_TIME_absolute_get();
-
- if (pm->transmit_cont != NULL)
- pm->transmit_cont (pm->transmit_cont_cls,
- &(session->target), GNUNET_OK);
- GNUNET_free(pm);
-
- sort_fragment_into_queue(plugin,fm);
- plugin->pending_fragment_messages ++;
-
- //generate new message id
- session->message_id_out = get_next_message_id();
-
- //check if timeout changed
- check_next_fragment_timeout(plugin);
- }
- }
+ if (endpoint != NULL)
+ {
+ 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;
+ }
+
+ return GNUNET_YES;
}
/**
- * Funktion to check if all fragments where send and the acks received
- * frees the space if finished
- * @param plugin the plugin struct
- * @param fm the message to check
+ * 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
+ * @return GNUNET_YES if there was no error
*/
-static void
-check_finished_fragment(struct Plugin * plugin, struct FragmentMessage * fm){
- struct AckQueue * ack;
- int counter = 0;
-
- if (fm->message_size >= (WLAN_MTU - sizeof(struct FragmentationHeader))
- * fm->tail->fragment_num)
+static int
+getWlanHeader(struct ieee80211_frame * Header,
+ const struct 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)
{
- ack = fm->head;
- counter = 0;
- //check if all acks are present
- while (ack != NULL)
- {
- if (counter == ack->fragment_num)
- {
- counter ++;
- ack = ack->next;
- } else {
- //ack is missing
- return;
- }
- }
- fm->session->has_fragment = 0;
- free_fragment_message(plugin, fm);
+ /* 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));
+#endif
- }
+ return GNUNET_YES;
}
/**
- * Function called when wlan helper is ready to get some data
+ * 32bit CRC
*
- * @param cls closure
- * @param tc GNUNET_SCHEDULER_TaskContext
+ * @param msgbuf pointer tor the data
+ * @param msgbuf_size size of the data
+ *
+ * @return 32bit crc value
*/
-static void
-do_transmit(void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+uint32_t
+getcrc32(const char *msgbuf, size_t msgbuf_size)
{
- struct Plugin * plugin = cls;
- plugin->server_write_task = GNUNET_SCHEDULER_NO_TASK;
-
- ssize_t bytes;
-
- if (tc->reason == GNUNET_SCHEDULER_REASON_SHUTDOWN)
- return;
+ return GNUNET_CRYPTO_crc32_n(msgbuf, msgbuf_size);;
+}
- struct Session * session = NULL;
- struct FragmentMessage * fm = NULL;
- struct IeeeHeader * ieeewlanheader = NULL;
- struct RadiotapHeader * radioHeader = NULL;
- struct GNUNET_MessageHeader * msgheader = NULL;
+/**
+ * 16bit CRC
+ *
+ * @param msgbuf pointer tor the data
+ * @param msgbuf_size size of the data
+ *
+ * @return 16bit crc value
+ */
- struct FragmentationHeader fragheader;
- struct FragmentationHeader * fragheaderptr = NULL;
- struct Finish_send * finish = NULL;
- uint16_t size = 0;
- const char * copystart = NULL;
- uint16_t copysize = 0;
- uint copyoffset = 0;
- struct AckQueue * akt = NULL;
+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
+ */
- struct GNUNET_MessageHeader * msgheader2 = NULL;
+void
+add_message_for_send(void *cls, const struct GNUNET_MessageHeader *hdr)
+{
- //test if a "hello-beacon" has to be send
- if (0==1)
- //if (GNUNET_TIME_absolute_get_remaining(plugin->beacon_time).rel_value == 0)
- {
- //check if the message is not to big
- GNUNET_assert(sizeof(struct WlanHeader) + GNUNET_HELLO_size(
- *(plugin->env->our_hello)) <= WLAN_MTU);
- size = sizeof(struct GNUNET_MessageHeader)
- + sizeof(struct RadiotapHeader) + sizeof(struct IeeeHeader)
- + sizeof(struct GNUNET_MessageHeader) + GNUNET_HELLO_size(
- *(plugin->env->our_hello));
-
- msgheader = GNUNET_malloc(size);
- msgheader->size = htons(size);
- msgheader->type = htons(GNUNET_MESSAGE_TYPE_WLAN_HELPER_DATA);
-
- radioHeader = (struct RadiotapHeader *) &msgheader[1];
- getRadiotapHeader(radioHeader);
-
- ieeewlanheader = (struct IeeeHeader *) &radioHeader[1];
- getWlanHeader(ieeewlanheader);
-
- msgheader2 = (struct GNUNET_MessageHeader *) &ieeewlanheader[1];
- msgheader2->size = htons(GNUNET_HELLO_size(*(plugin->env->our_hello))
- + sizeof(struct GNUNET_MessageHeader));
- msgheader2->type = htons(GNUNET_MESSAGE_TYPE_WLAN_ADVERTISEMENT);
+ 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 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
- memcpy(&msgheader2[1], *plugin->env->our_hello, GNUNET_HELLO_size(
- *(plugin->env->our_hello)));
+ size = sizeof(struct GNUNET_MessageHeader) + sizeof(struct Radiotap_Send)
+ + sizeof(struct ieee80211_frame) + ntohs(hdr->size);
+ fm->frag = GNUNET_malloc(size);
+ fm->size = size;
- bytes = GNUNET_DISK_file_write(plugin->server_stdin_handle, msgheader,
- size);
- if (bytes == GNUNET_SYSERR)
- {
- GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
- _("Error writing to wlan healper. errno == %d, ERROR: %s\n"),
- errno, strerror(errno));
+ msgheader = (struct GNUNET_MessageHeader *) fm->frag;
+ msgheader->size = htons(size);
+ msgheader->type = htons(GNUNET_MESSAGE_TYPE_WLAN_HELPER_DATA);
- }
- GNUNET_assert(bytes != GNUNET_SYSERR);
- GNUNET_assert(bytes == size);
+ 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_free(msgheader);
+ fmqueue = GNUNET_malloc(sizeof(struct FragmentMessage_queue));
+ fmqueue->content = fm;
- set_next_beacon_time(plugin);
- check_next_fragment_timeout(plugin);
+ GNUNET_CONTAINER_DLL_insert_tail(plugin->sending_messages_head,
+ plugin->sending_messages_tail, fmqueue);
+ set_next_send(plugin);
+}
- return;
+/**
+ * function to send a hallo beacon
+ * @param plugin pointer to the plugin struct
+ */
+static void
+send_hello_beacon(struct Plugin * plugin)
+{
- }
+#if DEBUG_wlan
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Sending hello beacon\n");
+#endif
+ 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;
+
+ 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;
+
+ 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(*(plugin->env->our_hello))
+ + sizeof(struct GNUNET_MessageHeader));
+ msgheader2->type = htons(GNUNET_MESSAGE_TYPE_WLAN_ADVERTISEMENT);
+ memcpy(&msgheader2[1], *plugin->env->our_hello, hallo_size);
- fm = plugin->pending_Fragment_Messages_head;
- GNUNET_assert(fm != NULL);
- session = fm->session;
- GNUNET_assert(session != NULL);
+ bytes = GNUNET_DISK_file_write(plugin->server_stdin_handle, msgheader, size);
- // test if message timed out
- if (GNUNET_TIME_absolute_get_remaining(fm->timeout).rel_value == 0)
+ if (bytes == GNUNET_SYSERR)
{
- free_acks(fm);
- GNUNET_assert(plugin->pending_fragment_messages > 0);
- plugin->pending_fragment_messages--;
- GNUNET_CONTAINER_DLL_remove(plugin->pending_Fragment_Messages_head,
- plugin->pending_Fragment_Messages_tail, fm);
+ GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
+ _("Error writing to wlan healper. errno == %d, ERROR: %s\n"),
+ errno, strerror(errno));
- GNUNET_free(fm->msg);
-
- GNUNET_free(fm);
- check_fragment_queue(plugin);
}
- else
- {
+ GNUNET_assert(bytes != GNUNET_SYSERR);
+ GNUNET_assert(bytes == size);
+ GNUNET_free(msgheader);
- if (fm->message_size > WLAN_MTU)
- {
- size += sizeof(struct FragmentationHeader);
- // check/set for retransmission
- if (GNUNET_TIME_absolute_get_duration(fm->next_ack).rel_value == 0)
- {
+ set_next_beacon_time(plugin);
+ set_next_send(plugin);
+}
- // be positive and try again later :-D
- fm->next_ack = GNUNET_TIME_relative_to_absolute(get_ack_timeout(
- fm));
- // find first missing fragment
- akt = fm->head;
- fm->message_pos = 0;
+/**
+ * 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
+ *
+ */
- //test if ack 0 was already received
- while (akt != NULL)
- {
- //if fragment is present, take next
- if (akt->fragment_num == fm->message_pos)
- {
- fm->message_pos++;
- }
- //next ack is bigger then the fragment number
- //in case there is something like this: (acks) 1, 2, 5, 6, ...
- //and we send 3 again, the next number should be 4
- else if (akt->fragment_num > fm->message_pos)
- {
- break;
- }
+static void
+add_ack_for_send(void *cls, uint32_t msg_id,
+ const struct GNUNET_MessageHeader *hdr)
+{
- akt = akt->next;
+ struct AckSendQueue * ack;
- }
+ GNUNET_assert(cls != NULL);
+ struct MacEndpoint * endpoint = cls;
+ struct Plugin * plugin = endpoint->plugin;
+ 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);
- copyoffset = (WLAN_MTU - sizeof(struct FragmentationHeader))
- * fm->message_pos;
- fragheader.fragment_off_or_num = htons(fm->message_pos);
- fragheader.message_id = htonl(session->message_id_out);
-
- // start should be smaller then the packet size
- GNUNET_assert(copyoffset < fm->message_size);
- copystart = fm->msg + copyoffset;
-
- //size of the fragment is either the MTU - overhead
- //or the missing part of the message in case this is the last fragment
- copysize = GNUNET_MIN(fm->message_size - copyoffset,
- WLAN_MTU - sizeof(struct FragmentationHeader));
- fragheader.header.size = htons(copysize
- + sizeof(struct FragmentationHeader));
- fragheader.header.type = htons(GNUNET_MESSAGE_TYPE_WLAN_FRAGMENT);
-
- //get the next missing fragment
- akt = fm->head;
- fm->message_pos++;
-
- //test if ack was already received
- while (akt != NULL)
- {
- //if fragment is present, take next
- if (akt->fragment_num == fm->message_pos)
- {
- fm->message_pos++;
- }
- //next ack is bigger then the fragment number
- //in case there is something like this: (acks) 1, 2, 5, 6, ...
- //and we send 3 again, the next number should be 4
- else if (akt->fragment_num > fm->message_pos)
- {
- break;
- }
+ ack = GNUNET_malloc(size);
+ ack->message_id = msg_id;
+ ack->endpoint = endpoint;
- akt = akt->next;
- }
- }
- else
- {
- // there is no need to split
- copystart = fm->msg;
- copysize = fm->message_size;
- }
+ size = sizeof(struct GNUNET_MessageHeader) + sizeof(struct Radiotap_Send)
+ + sizeof(struct ieee80211_frame) + ntohs(hdr->size);
- size += copysize;
- size += sizeof(struct RadiotapHeader) + sizeof(struct IeeeHeader)
- + sizeof(struct GNUNET_MessageHeader);
- msgheader = GNUNET_malloc(size);
- msgheader->size = htons(size);
- msgheader->type = htons(GNUNET_MESSAGE_TYPE_WLAN_HELPER_DATA);
+ 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);
- radioHeader = (struct RadiotapHeader*) &msgheader[1];
- getRadiotapHeader(radioHeader);
+ 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));
- ieeewlanheader = (struct IeeeHeader *) &radioHeader[1];
- getWlanHeader(ieeewlanheader);
+ GNUNET_CONTAINER_DLL_insert_tail(plugin->ack_send_queue_head,
+ plugin->ack_send_queue_tail, ack);
- //could be faster if content is just send and not copyed before
- //fragmentheader is needed
- if (fm->message_size > WLAN_MTU)
- {
- fragheader.message_crc = htons(getcrc16(copystart, copysize));
- memcpy(&ieeewlanheader[1], &fragheader,
- sizeof(struct FragmentationHeader));
- fragheaderptr = (struct FragmentationHeader *) &ieeewlanheader[1];
- memcpy(&fragheaderptr[1], copystart, copysize);
- }
- else
- {
- memcpy(&ieeewlanheader[1], copystart, copysize);
- }
+#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
- bytes = GNUNET_DISK_file_write(plugin->server_stdin_handle, msgheader, size);
- if (bytes == GNUNET_SYSERR){
- GNUNET_log(GNUNET_ERROR_TYPE_ERROR,
- _("Error writing to wlan healper. errno == %d, ERROR: %s\n"), errno, strerror(errno) );
+ set_next_send(plugin);
+}
- }
- GNUNET_assert(bytes != GNUNET_SYSERR);
+/**
+ * Function to check if there is some space in the fragment queue
+ * inserts a message if space is available
+ * @param plugin the plugin struct
+ */
- if (bytes != size)
- {
- finish = GNUNET_malloc(sizeof( struct Finish_send));
- finish->plugin = plugin;
- finish->msgheader = (char * ) msgheader + bytes;
- finish->size = size - bytes;
- finish->msgstart = msgheader;
+static void
+check_fragment_queue(struct Plugin * plugin)
+{
+ struct Session * session;
+ struct FragmentMessage * fm;
+ struct GNUNET_PeerIdentity pid;
- GNUNET_assert(plugin->server_write_task == GNUNET_SCHEDULER_NO_TASK);
+ struct PendingMessage * pm;
- plugin->server_write_task = GNUNET_SCHEDULER_add_write_file(
- GNUNET_TIME_UNIT_FOREVER_REL, plugin->server_stdin_handle,
- &finish_sending, finish);
-
- }
- else
+ if (plugin->pending_Fragment_Messages < FRAGMENT_QUEUE_SIZE)
+ {
+ session = get_next_queue_session(plugin);
+ if (session != NULL)
{
- GNUNET_assert(bytes == size);
+ 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);
+
+ if (session->pending_message_head != NULL)
+ {
+ //requeue session
+ queue_session(plugin, session);
+ }
- GNUNET_free(msgheader);
- check_next_fragment_timeout(plugin);
}
+ }
- //check if this was the last fragment of this message, if true then queue at the end of the list
- if (copysize + copyoffset >= fm->message_size)
- {
- GNUNET_assert(copysize + copyoffset == fm->message_size);
+ //check if timeout changed
+ 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)
+{
- GNUNET_CONTAINER_DLL_remove (plugin->pending_Fragment_Messages_head,
- plugin->pending_Fragment_Messages_tail, fm);
+ ssize_t bytes;
- GNUNET_CONTAINER_DLL_insert_tail(plugin->pending_Fragment_Messages_head,
- plugin->pending_Fragment_Messages_tail, fm);
- // if fragments have opimized timeouts
- //sort_fragment_into_queue(plugin,fm);
+#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));
+ 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);
}
-
+/**
+ * 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;
+ struct Finish_send * finish = cls;
struct Plugin * plugin;
ssize_t bytes;
- finish = cls;
plugin = finish->plugin;
-
plugin->server_write_task = GNUNET_SCHEDULER_NO_TASK;
- bytes = GNUNET_DISK_file_write(plugin->server_stdin_handle, finish->msgheader, finish->size);
- GNUNET_assert(bytes != GNUNET_SYSERR);
+ 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);
- GNUNET_assert(plugin->server_write_task == GNUNET_SCHEDULER_NO_TASK);
if (bytes != finish->size)
{
-
- finish->plugin = plugin;
finish->msgheader = finish->msgheader + bytes;
finish->size = finish->size - bytes;
plugin->server_write_task = GNUNET_SCHEDULER_add_write_file(
{
GNUNET_free(finish->msgstart);
GNUNET_free(finish);
- check_next_fragment_timeout(plugin);
+ set_next_send(plugin);
}
-
}
-int
-getRadiotapHeader(struct RadiotapHeader * Header){
- return GNUNET_YES;
-};
+/**
+ * Function called when wlan helper is ready to get some data
+ *
+ * @param cls closure
+ * @param tc GNUNET_SCHEDULER_TaskContext
+ */
+static void
+do_transmit(void *cls, const struct GNUNET_SCHEDULER_TaskContext *tc)
+{
+ struct Plugin * plugin = cls;
-int
-getWlanHeader(struct IeeeHeader * Header){
+ plugin->server_write_task = GNUNET_SCHEDULER_NO_TASK;
+ if (0 != (tc->reason & GNUNET_SCHEDULER_REASON_SHUTDOWN))
+ return;
- return GNUNET_YES;
-}
+ 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;
+ }
-/**
- * 32bit CRC
- *
- * @param msgbuf pointer tor the data
- * @param msgbuf_size size of the data
- *
- * @return 32bit crc value
- */
+ //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;
+ }
-uint32_t
-getcrc32 (const char *msgbuf,
- size_t msgbuf_size){
- //TODO calc some crc
- return 0;
+ if (plugin->sending_messages_head != NULL)
+ {
+ 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");
}
/**
- * 16bit CRC
- *
- * @param msgbuf pointer tor the data
- * @param msgbuf_size size of the data
+ * Another peer has suggested an address for this
+ * peer and transport plugin. Check that this could be a valid
+ * address. If so, consider adding it to the list
+ * of addresses.
*
- * @return 16bit crc value
+ * @param cls closure
+ * @param addr pointer to the address
+ * @param addrlen length of addr
+ * @return GNUNET_OK if this is a plausible address for this peer
+ * and transport
*/
+static int
+wlan_plugin_address_suggested(void *cls, const void *addr, size_t addrlen)
+{
+ //struct Plugin *plugin = cls;
-uint16_t
-getcrc16 (const char *msgbuf,
- size_t msgbuf_size){
- //TODO calc some crc
- return 0;
+ /* check if the address is plausible; if so,
+ add it to our list! */
+
+ 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;
+ }
+
+ return GNUNET_SYSERR;
}
/**
* @param priority how important is the message
* @param msgbuf the message to transmit
* @param msgbuf_size number of bytes in 'msgbuf'
- * @param timeout when should we time out
+ * @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))
* 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, 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)
{
struct Plugin * plugin = cls;
- struct PendingMessage * newmsg = NULL;
- struct WlanHeader * wlanheader = NULL;
+ struct PendingMessage * newmsg;
+ struct WlanHeader * wlanheader;
+
//check if msglen > 0
GNUNET_assert(msgbuf_size > 0);
{
if (wlan_plugin_address_suggested(plugin, addr, addrlen) == GNUNET_OK)
{
- session = get_Session(plugin, addr);
+ session = get_session(plugin, addr, target);
}
else
{
}
}
- //TODO target "problem" not solved
- session->target = *target;
-
//queue message:
- //first queue session
- queue_Session(plugin, session);
//queue message in session
//test if there is no other message in the "queue"
- GNUNET_assert (session->pending_message == NULL);
+ //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));
- wlanheader = (struct WlanHeader *) newmsg->msg;
+ 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));
- wlanheader->crc = htonl(getcrc32(msgbuf, msgbuf_size));
+ 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));
+
newmsg->transmit_cont = cont;
newmsg->transmit_cont_cls = cont_cls;
newmsg->timeout = GNUNET_TIME_relative_to_absolute(timeout);
+
+ newmsg->timeout.abs_value = newmsg->timeout.abs_value - 500;
+
newmsg->message_size = msgbuf_size + sizeof(struct WlanHeader);
- session->pending_message = 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);
+#endif
+
+ //queue session
+ queue_session(plugin, session);
check_fragment_queue(plugin);
//FIXME not the correct size
}
-//TODO doxigen
-static struct FragmentMessage *
-get_fragment_message_from_session(struct Session * session)
+/**
+ * function to free a mac endpoint
+ * @param plugin pointer to the plugin struct
+ * @param endpoin pointer to the MacEndpoint to free
+ */
+static void
+free_macendpoint(struct Plugin * plugin, struct MacEndpoint * endpoin)
+{
+ struct Sessionqueue * sessions;
+ struct Sessionqueue * sessions_next;
+ GNUNET_assert(endpoin != NULL);
+
+ sessions = endpoin->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,endpoin);
+ GNUNET_free(endpoin);
+
+}
+
+/**
+ * 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
+ */
+static void
+free_session(struct Plugin * plugin, struct Sessionqueue * queue,
+ int do_free_macendpoint)
{
- struct FragmentMessage * fm = session->plugin->pending_Fragment_Messages_head;
+ 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);
+
+ //session found
+ //is this session pending for send
+ pendingsession = plugin->pending_Sessions_head;
+ while (pendingsession != NULL)
+ {
+ 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;
+ }
+
+ endpoint = queue->content->mac;
+ fm = endpoint->sending_messages_head;
while (fm != NULL)
{
- if (fm->session == session)
+ fmnext = fm->next;
+ if (fm->session == queue->content)
{
- return fm;
+ free_fragment_message(plugin, fm);
}
- fm = fm->next;
+ fm = fmnext;
}
- return NULL;
+
+ // 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);
+
+ 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);
}
/**
wlan_plugin_disconnect(void *cls, const struct GNUNET_PeerIdentity *target)
{
struct Plugin *plugin = cls;
- struct Sessionqueue * queue = plugin->sessions;
- struct Sessionqueue * pendingsession = plugin->pending_Sessions;
- struct PendingMessage * pm = NULL;
- struct FragmentMessage * fm;
-
+ 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 (queue != NULL)
+ while (endpoint != NULL)
{
- // content is never NULL
- GNUNET_assert (queue->content != NULL);
- if (memcmp(target, &(queue->content->target),
- sizeof(struct GNUNET_PeerIdentity)) == 0)
+ queue = endpoint->sessions_head;
+ endpoint_next = endpoint->next;
+ while (queue != NULL)
{
- //session found
- //is this session pending for send
- while (pendingsession != 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)
{
- if (pendingsession->content == queue->content)
- {
- plugin->pendingsessions --;
- GNUNET_CONTAINER_DLL_remove (plugin->pending_Sessions,
- plugin->pending_Sessions_tail, pendingsession);
- GNUNET_free(pendingsession);
- break;
- }
- pendingsession = pendingsession->next;
+ free_session(plugin, queue, GNUNET_YES);
}
-
- //is something of this session in the fragment queue?
- fm = get_fragment_message_from_session(queue->content);
- free_fragment_message(plugin,fm);
-
- //dispose all received fragments
- free_rec_frag_queue(queue->content);
-
- // remove PendingMessage
- pm = queue->content->pending_message;
- GNUNET_free(pm->msg);
- GNUNET_free(pm);
-
- GNUNET_free(queue->content);
- GNUNET_CONTAINER_DLL_remove(plugin->sessions, plugin->sessions_tail, queue);
- GNUNET_free(queue);
- plugin->session_count --;
-
- return;
+ // try next
+ queue = queue_next;
}
- // try next
- queue = queue->next;
+ endpoint = endpoint_next;
}
}
-
/**
* Convert the transports address to a nice, human-readable
* format.
* @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;
-
- GNUNET_assert(cls !=NULL);
+
+ //GNUNET_assert(cls !=NULL);
if (addrlen != 6)
{
- /* invalid address (MAC addresses have 6 bytes) */
- GNUNET_break (0);
- asc (asc_cls, NULL);
+ /* 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-Adress %X:%X:%X:%X:%X:%X",
- PROTOCOL_PREFIX,
- input[0], input[1], input[2], input[3], input[4], input[5]);
- asc (asc_cls, ret);
+ 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);
}
-
-
/**
- * Another peer has suggested an address for this
- * peer and transport plugin. Check that this could be a valid
- * address. If so, consider adding it to the list
- * of addresses.
- *
- * @param cls closure
- * @param addr pointer to the address
- * @param addrlen length of addr
- * @return GNUNET_OK if this is a plausible address for this peer
- * and transport
+ * handels the data after all fragments are put together
+ * @param plugin
+ * @param session_light
+ * @param hdr pointer to the data
*/
-
-
-static int
-wlan_plugin_address_suggested (void *cls,
- const void *addr,
- size_t addrlen)
+static void
+wlan_data_message_handler(void *cls, const struct GNUNET_MessageHeader *hdr)
{
- //struct Plugin *plugin = cls;
-
- /* check if the address is plausible; if so,
- add it to our list! */
+ 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 GNUNET_PeerIdentity tmpsource;
+ int crc;
- GNUNET_assert(cls !=NULL);
- //FIXME mitm is not checked
- //Mac Adress has 6 bytes
- if (addrlen == 6){
- /* TODO check for bad addresses like milticast, broadcast, etc */
- return GNUNET_OK;
- } else {
- return GNUNET_SYSERR;
- }
+ if (ntohs(hdr->type) == GNUNET_MESSAGE_TYPE_WLAN_DATA)
+ {
- return GNUNET_SYSERR;
-}
+#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->size) < sizeof(struct WlanHeader)
+ + sizeof(struct GNUNET_MessageHeader))
+ {
+ //packet not big enought
+ return;
+ }
-/**
- * Function called for a quick conversion of the binary address to
- * a numeric address. Note that the caller must not free the
- * address and that the next call to this function is allowed
- * to override the address again.
- *
- * @param cls closure
- * @param addr binary address
- * @param addrlen length of the address
- * @return string representing the same address
- */
-static const char*
-wlan_plugin_address_to_string (void *cls,
- const void *addr,
- size_t addrlen)
-{
- static char ret[40];
- const unsigned char * input;
-
- GNUNET_assert(cls !=NULL);
- if (addrlen != 6)
- {
- /* invalid address (MAC addresses have 6 bytes) */
- GNUNET_break (0);
- return NULL;
- }
- input = (const unsigned char*) addr;
- GNUNET_snprintf (ret,
- sizeof (ret),
- "%s Mac-Adress %X:%X:%X:%X:%X:%X",
- PROTOCOL_PREFIX,
- input[0], input[1], input[2], input[3], input[4], input[5]);
- return ret;
-}
+ wlanheader = (struct WlanHeader *) hdr;
-/**
- * Function to test if fragment number already exists in the fragments received
- *
- * @param session session the fragment belongs to
- * @param fh Fragmentheader of the fragment
- * @return GNUNET_YES if fragment exists already, GNUNET_NO if it does not exists in the queue of the session
- */
+ session = search_session(plugin, endpoint, &wlanheader->source);
-static const int
-is_double_msg(struct Session * session, struct FragmentationHeader * fh)
-{
- struct RecQueue * rec_queue = session->frag_head;
- while (rec_queue != NULL)
- {
- if (rec_queue->num == fh->fragment_off_or_num)
+ //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)
{
- return GNUNET_YES;
+ //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;
}
- rec_queue = rec_queue->next;
- }
- return GNUNET_NO;
-}
+ //if not in session list
+ if (session == NULL)
+ {
+#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;
+ }
-/**
- * Function to insert a fragment in a queue of a session
- * @param session session the fragment belongs to
- * @param rec_queue fragment to add
- */
+ }
+ else
+ {
+ GNUNET_log(GNUNET_ERROR_TYPE_WARNING,
+ "WLAN client not in session list and not a hello message\n");
+ return;
+ }
+ }
+ 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;
+ }
+ }
-static void
-insert_fragment_in_queue(struct Session * session, struct RecQueue * rec_queue)
-{
- struct RecQueue * rec_queue2 = session->frag_head;
- struct WlanHeader * wlanheader = NULL;
- //first received fragment of message
- if (session->rec_size == NO_MESSAGE_OR_MESSAGE_FINISHED)
- {
- session->rec_size = MESSAGE_LENGHT_UNKNOWN;
- }
- //this is the first fragment of the message (fragment id 0)
- if (rec_queue->num == 0)
- {
- wlanheader = (struct WlanHeader *) rec_queue->msg;
- session->rec_size = wlanheader->header.size;
- }
+ //"receive" the message
+
+ 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;
+ }
- //sort into list
- while (rec_queue2 != NULL)
- {
- if (rec_queue2->num > rec_queue->num)
+ if (memcmp(&wlanheader->target, plugin->env->my_identity,
+ sizeof(struct GNUNET_PeerIdentity)) != 0)
{
- //next element number is grater than the current num
- GNUNET_CONTAINER_DLL_insert_before(session->frag_head, session->frag_tail, rec_queue2, rec_queue);
+ //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
return;
}
- rec_queue = rec_queue->next;
- }
- //no element has a grater number
- GNUNET_CONTAINER_DLL_insert_tail(session->frag_head, session->frag_tail, rec_queue);
-}
-/**
- * Function to dispose the fragments received for a message
- * @param session session to free the fragments from
- */
+ GNUNET_SERVER_mst_receive(plugin->data_tokenizer, session,
+ (const char *) temp_hdr,
+ ntohs(hdr->size) - sizeof(struct WlanHeader), GNUNET_YES, GNUNET_NO);
-static void
-free_rec_frag_queue(struct Session * session)
-{
- struct RecQueue * rec_queue = session->frag_head;
- struct RecQueue * rec_queue2;
- while (rec_queue != NULL)
+ return;
+ }
+ else
{
- rec_queue2 = rec_queue;
- rec_queue = rec_queue->next;
- GNUNET_free(rec_queue2);
+ GNUNET_log(GNUNET_ERROR_TYPE_WARNING,
+ "wlan_data_message_handler got wrong message type\n");
+ return;
}
- session->frag_head = NULL;
- session->frag_tail = NULL;
- session->rec_size = NO_MESSAGE_OR_MESSAGE_FINISHED;
}
-/**
- * Function to check if all fragments of a message have been received
- * @param plugin the plugin handle
- * @param session_light information of the message sender
- * @param session session the message belongs to
- */
-
+//TODO DOXIGEN
static void
-check_rec_finished_msg (struct Plugin* plugin, struct Session_light * session_light, struct Session * session){
- struct RecQueue * rec_queue = session->frag_head;
- int packetsize = session->rec_size;
- int sum = 0;
- int aktnum = 0;
- char * msg;
- //some fragment should be received
- GNUNET_assert(session->rec_size != NO_MESSAGE_OR_MESSAGE_FINISHED);
- //check if first fragment is present
- if (session->rec_size == MESSAGE_LENGHT_UNKNOWN){
- return;
- }
- while (rec_queue != NULL){
- sum += rec_queue->size;
- //check if all fragment numbers are present
- if (rec_queue->num != aktnum){
- return;
- }
- aktnum ++;
- rec_queue = rec_queue->next;
- }
- //sum should always be smaller or equal of
- GNUNET_assert(sum <= packetsize);
- if(sum == packetsize){
+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,
- "check_rec_finished_msg: A message with fragments is complete\n");
+ 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
- //copy fragments together
- msg = GNUNET_malloc(packetsize);
- rec_queue = session->frag_head;
- aktnum = 0;
- while (rec_queue != NULL){
- memcpy(msg + aktnum, rec_queue->msg, rec_queue->size);
- aktnum += rec_queue->size;
- rec_queue = rec_queue->next;
- }
- free_rec_frag_queue(session);
- //call wlan_process_helper to process the message
- wlan_data_helper (plugin, session_light, (struct GNUNET_MessageHeader*) msg);
-
- GNUNET_free(msg);
- }
+ 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));
}
/**
* Function used for to process the data received from the wlan interface
*
* @param cls the plugin handle
- * @param client client which send the data (not used)
+ * @param session_light FIXME: document
* @param hdr hdr of the GNUNET_MessageHeader
*/
static void
-wlan_data_helper(void *cls, void * client, const struct GNUNET_MessageHeader * hdr)
+wlan_data_helper(void *cls, struct Session_light * session_light,
+ const struct GNUNET_MessageHeader * hdr, const struct Radiotap_rx * rxinfo)
{
struct Plugin *plugin = cls;
- struct Session * session = NULL;
- struct Session_light * session_light = NULL;
-
- struct WlanHeader * wlanheader = NULL;
- struct FragmentationHeader * fh = NULL;
- struct FragmentMessage * fm = NULL;
-
- const char * tempmsg = NULL;
-
- struct AckQueue * ack = NULL;
- struct AckQueue * ack2 = NULL;
-
- struct RecQueue * rec_queue = NULL;
- const struct GNUNET_MessageHeader * temp_hdr = NULL;
+ struct FragmentMessage * fm;
+ struct FragmentMessage * fm2;
+ //ADVERTISEMENT
if (ntohs(hdr->type) == GNUNET_MESSAGE_TYPE_WLAN_ADVERTISEMENT)
{
+ //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: %i\n",
- ntohs(hdr->size));
+ "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
- //TODO better DOS protection, error handling
- GNUNET_assert(client != NULL);
- session_light = (struct Session_light *) client;
- if (session_light->session == NULL)
+ if (session_light->macendpoint == NULL)
{
- session_light->session = get_Session(plugin, session_light->addr);
+ session_light->macendpoint = get_macendpoint(plugin,
+ &session_light->addr, GNUNET_NO);
}
GNUNET_assert(GNUNET_HELLO_get_id(
(const struct GNUNET_HELLO_Message *) &hdr[1],
}
+ //FRAGMENT
- else if (ntohs(hdr->type) == GNUNET_MESSAGE_TYPE_WLAN_DATA)
+ else if (ntohs(hdr->type) == GNUNET_MESSAGE_TYPE_FRAGMENT)
{
-#if DEBUG_wlan
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "Func wlan_data_helper got GNUNET_MESSAGE_TYPE_WLAN_DATA size: %i\n",
- ntohs(hdr->size));
-#endif
-
- GNUNET_assert(client != NULL);
- session_light = (struct Session_light *) client;
- if (session_light->session == NULL)
- {
- session_light->session = search_session(plugin, session_light->addr);
- }
- session = session_light->session;
- wlanheader = (struct WlanHeader *) hdr;
- tempmsg = (char*) &wlanheader[1];
- temp_hdr = (const struct GNUNET_MessageHeader *) &wlanheader[1];
-
- if (getcrc32(tempmsg, wlanheader->header.size) != wlanheader->crc)
- {
- //wrong crc, dispose message
- GNUNET_log(GNUNET_ERROR_TYPE_INFO, "WLAN message crc was wrong\n");
- return;
- }
-
- //if not in session list
- if (session == NULL)
+ GNUNET_assert(session_light != NULL);
+ if (session_light->macendpoint == NULL)
{
-
- //try if it is a hello message
- if (ntohs(temp_hdr->type) == GNUNET_MESSAGE_TYPE_HELLO)
- {
- session = create_session(plugin, session_light->addr);
- session_light->session = session;
- GNUNET_assert(GNUNET_HELLO_get_id(
- (const struct GNUNET_HELLO_Message *) temp_hdr,
- &session->target ) != GNUNET_SYSERR);
-
- }
- else
- {
- GNUNET_log(GNUNET_ERROR_TYPE_WARNING,
- "WLAN client not in session list and not a hello message\n");
- return;
- }
+ session_light->macendpoint = get_macendpoint(plugin,
+ &session_light->addr, GNUNET_YES);
}
- //"receive" the message
- 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);
- plugin->env->receive(plugin->env->cls, &(session->target), temp_hdr,
- (const struct GNUNET_TRANSPORT_ATS_Information *) &distance, 2,
- session, session->addr, sizeof(session->addr));
-
- }
-
- else if (ntohs(hdr->type) == GNUNET_MESSAGE_TYPE_WLAN_FRAGMENT)
- {
-
#if DEBUG_wlan
GNUNET_log(
GNUNET_ERROR_TYPE_DEBUG,
- "Func wlan_data_helper got GNUNET_MESSAGE_TYPE_WLAN_FRAGMENT size: %i\n",
- ntohs(hdr->size));
+ "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_assert(client != NULL);
- session_light = (struct Session_light *) client;
- if (session_light->session == NULL)
+ 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->session = search_session(plugin, session_light->addr);
+ session_light->macendpoint->fragc++;
}
- session = session_light->session;
+ set_next_send(plugin);
- fh = (struct FragmentationHeader *) hdr;
- tempmsg = (char*) &fh[1];
+ }
- //if not in session list
- if (session != NULL)
+ //ACK
+
+ else if (ntohs(hdr->type) == GNUNET_MESSAGE_TYPE_FRAGMENT_ACK)
+ {
+ GNUNET_assert(session_light != NULL);
+ if (session_light->macendpoint == NULL)
{
- if (getcrc16(tempmsg, fh->header.size) != fh->message_crc)
- {
- //wrong crc, dispose message
- GNUNET_log(GNUNET_ERROR_TYPE_INFO,
- "WLAN fragment crc was wrong\n");
- return;
- }
- else
- {
- //todo fragments do not timeout
- //check if message_id is rigth or it is a new msg
- if ((session->message_id_in == ntohs(fh->message_id))
- || (session->rec_size == NO_MESSAGE_OR_MESSAGE_FINISHED))
- {
- session->message_id_in = ntohs(fh->message_id);
- if (is_double_msg(session, fh) != GNUNET_YES)
- {
- rec_queue
- = GNUNET_malloc(sizeof (struct RecQueue) +
- ntohs(fh->header.size) - sizeof(struct FragmentationHeader));
- rec_queue->size = ntohs(fh->header.size
- - sizeof(struct FragmentationHeader));
- rec_queue->num = ntohs(fh->fragment_off_or_num);
- rec_queue->msg = (char*) &rec_queue[1];
- //copy msg to buffer
- memcpy((char*) rec_queue->msg, tempmsg, rec_queue->size);
- insert_fragment_in_queue(session, rec_queue);
- check_rec_finished_msg(plugin, session_light, session);
- }
- else
- {
- GNUNET_log(GNUNET_ERROR_TYPE_INFO,
- "WLAN fragment is a clone\n");
- return;
- }
- }
- else
- {
- GNUNET_log(
- GNUNET_ERROR_TYPE_INFO,
- "WLAN fragment message_id and session message_id are not the same and a message is already (partly) received\n");
- return;
- }
- }
+ session_light->macendpoint = get_macendpoint(plugin,
+ &session_light->addr, GNUNET_NO);
}
- else
+
+ if (session_light->macendpoint == NULL)
{
- GNUNET_log(GNUNET_ERROR_TYPE_WARNING,
- "WLAN client not in session list and it is a fragment message\n");
+#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;
}
- }
-
- else if (ntohs(hdr->type) == GNUNET_MESSAGE_TYPE_WLAN_FRAGMENT_ACK)
- {
-
#if DEBUG_wlan
GNUNET_log(
GNUNET_ERROR_TYPE_DEBUG,
- "Func wlan_data_helper got GNUNET_MESSAGE_TYPE_WLAN_FRAGMENT_ACK size: %i\n",
- ntohs(hdr->size));
+ "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
-
- GNUNET_assert(client != NULL);
- session_light = (struct Session_light *) client;
- if (session_light->session == NULL)
+ fm = session_light->macendpoint->sending_messages_head;
+ while (fm != NULL)
{
- session_light->session = search_session(plugin, session_light->addr);
- GNUNET_assert(session_light->session != NULL);
- }
- session = session_light->session;
- fh = (struct FragmentationHeader *) &hdr[1];
- if (fh->message_id == session->message_id_out)
- {
- fm = get_fragment_message_from_session(session);
- if (fm != NULL)
+ fm2 = fm->next;
+ int ret = GNUNET_FRAGMENT_process_ack(fm->fragcontext, hdr);
+ if (ret == GNUNET_OK)
{
-
- ack2 = fm->head;
- while (ack2 != NULL)
- {
- // check for double
- if (ack2->fragment_num != fh->fragment_off_or_num)
- {
- // check if next ack has bigger number
- if (ack2->fragment_num > fh->fragment_off_or_num)
- {
- ack = GNUNET_malloc(sizeof(struct AckQueue));
- ack->fragment_num = fh->fragment_off_or_num;
- GNUNET_CONTAINER_DLL_insert_before(fm->head,fm->tail,ack2,ack);
- //check if finished
- check_finished_fragment(plugin, fm);
- return;
- }
- }
- else
- {
- //double ack
- return;
- }
- ack2 = ack2->next;
- }
- //GNUNET_CONTAINER_DLL_insert_tail(fm->head,fm->tail,ack);
- //should never happen but...
- //check_finished_fragment(plugin, fm);
+#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;
}
- else
+ if (ret == GNUNET_NO)
{
- GNUNET_log(GNUNET_ERROR_TYPE_WARNING,
- "WLAN fragment not in fragment list but id is right\n");
+#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;
+
}
else
{
// TODO Wrong data?
- GNUNET_log(GNUNET_ERROR_TYPE_INFO,
- "WLAN packet inside the WLAN helper packet has not the right type\n");
+ 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);
return;
}
#if 0
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
- "Helper finished\n");
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
+ "Helper finished\n");
#endif
}
+//TODO DOXIGEN
+const char *
+macprinter(const u_int8_t * 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]);
+ return macstr;
+}
+
+/**
+ * function to create an macendpoint
+ * @param plugin pointer to the plugin struct
+ * @param addr pointer to the macaddress
+ * @return returns a macendpoint
+ */
+static struct MacEndpoint *
+create_macendpoint(struct Plugin *plugin, const struct MacAddress *addr)
+{
+ struct MacEndpoint * newend = GNUNET_malloc(sizeof (struct MacEndpoint));
+ 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);
+
+ 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
+ return newend;
+}
+
/**
* Function used for to process the data from the suid process
*
* @param cls the plugin handle
- * @param client which send the data (not used)
- * @param hdr of the GNUNET_MessageHeader
+ * @param client client that send the data (not used)
+ * @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 IeeeHeader * wlanIeeeHeader = NULL;
+ struct ieee80211_frame * wlanIeeeHeader = NULL;
struct Session_light * session_light = NULL;
+ struct Radiotap_rx * rxinfo;
const struct GNUNET_MessageHeader * temp_hdr = NULL;
- int pos = 0;
-
+ int datasize = 0;
+ int pos;
- if (ntohs(hdr->type) == GNUNET_MESSAGE_TYPE_WLAN_HELPER_DATA)
+ 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: %i\n",
- ntohs(hdr->size));
+ GNUNET_log(
+ GNUNET_ERROR_TYPE_DEBUG,
+ "Func wlan_process_helper got GNUNET_MESSAGE_TYPE_WLAN_HELPER_DATA size: %u\n",
+ ntohs(hdr->size));
#endif
- //call wlan_process_helper with the message inside, later with wlan: analyze signal
- GNUNET_assert(ntohs(hdr->size) >= sizeof(struct IeeeHeader));
- wlanIeeeHeader = (struct IeeeHeader *) &hdr[1];
+ //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];
- session_light = GNUNET_malloc(sizeof(struct Session_light));
- memcpy(session_light->addr, &(wlanIeeeHeader->mac3), sizeof(struct MacAddress));
- session_light->session = search_session(plugin, session_light->addr);
+ //process only if it is an broadcast or for this computer both with the gnunet bssid
- //process only if it is an broadcast or for this computer both with the gnunet bssid
- //check for bssid
- if (memcmp(&(wlanIeeeHeader->mac2), macbc, sizeof(struct MacAddress)))
- {
- //check for broadcast or mac
- if (memcmp(&(wlanIeeeHeader->mac1), bc_all_mac, sizeof(struct MacAddress))
- || memcmp(&(wlanIeeeHeader->mac1), &(plugin->mac_address),
- sizeof(struct MacAddress)))
- {
- // process the inner data
- pos = 0;
- temp_hdr = (struct GNUNET_MessageHeader *) &wlanIeeeHeader[1];
- while (pos < hdr->size)
- {
- wlan_data_helper(plugin, session_light, temp_hdr);
- pos += temp_hdr->size + sizeof(struct GNUNET_MessageHeader);
- }
- }
- }
+ //check for bssid
+ if (memcmp(&(wlanIeeeHeader->i_addr3), &mac_bssid,
+ sizeof(struct 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)
+ {
- //clean up
- GNUNET_free(session_light);
+ // 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);
- else if (ntohs(hdr->type) == GNUNET_MESSAGE_TYPE_WLAN_HELPER_CONTROL)
- {
+ 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);
+ }
+ else
+ {
#if DEBUG_wlan
- GNUNET_log(
- GNUNET_ERROR_TYPE_DEBUG,
- "Func wlan_process_helper got GNUNET_MESSAGE_TYPE_WLAN_HELPER_CONTROL size: %i\n",
- ntohs(hdr->size));
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
+ "Func wlan_process_helper got wrong MAC: %s\n",
+ macprinter(wlanIeeeHeader->i_addr1));
#endif
-
- //TODO more control
- //TODO use struct wlan_helper_control
- if (ntohs(hdr->size) == sizeof(struct Wlan_Helper_Control_Message))
- {
- //plugin->mac_address = GNUNET_malloc(sizeof(struct MacAddress));
- memcpy(&(plugin->mac_address), &hdr[1], sizeof(struct MacAddress));
- GNUNET_log(
- GNUNET_ERROR_TYPE_DEBUG,
- "Notifying transport of address %s\n",
- wlan_plugin_address_to_string(cls, &(plugin->mac_address), ntohs(hdr->size) - sizeof(struct GNUNET_MessageHeader)));
- plugin->env->notify_address(plugin->env->cls, "wlan",
- &plugin->mac_address, sizeof(struct MacAddress),
- GNUNET_TIME_UNIT_FOREVER_REL);
- }
- else
- {
- GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "Wrong wlan mac address %s\n",
- plugin->mac_address);
- }
-
- }
-
-
- else
- {
- // TODO Wrong data?
- GNUNET_log(GNUNET_ERROR_TYPE_INFO, "WLAN helper packet has not the right type\n");
- return;
+ }
+ }
+ else
+ {
+#if DEBUG_wlan
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
+ "Func wlan_process_helper got wrong BSSID: %s\n",
+ macprinter(wlanIeeeHeader->i_addr2));
+#endif
+ }
+ 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));
+ break;
+ default:
+ GNUNET_break (0);
+ return;
}
}
* @param cls the plugin handle
* @param tc the scheduling context
*/
-
static void
-wlan_plugin_helper_read (void *cls,
- const struct GNUNET_SCHEDULER_TaskContext *tc)
+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 DEBUG_wlan
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "Start reading from STDIN\n");
-#endif
-
- if (tc->reason == GNUNET_SCHEDULER_REASON_SHUTDOWN)
+ 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));
+ 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);
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
+ _("Finished reading from wlan-helper stdout with code: %d\n"),
+ bytes);
#endif
return;
}
- GNUNET_SERVER_mst_receive(plugin->consoltoken, NULL,
- mybuf, bytes, GNUNET_NO, GNUNET_NO);
+ 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);
+ 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.
*
static int
wlan_transport_start_wlan_helper(struct Plugin *plugin, int testmode)
{
- const char * filename = "gnunet-transport-wlan-helper";
+ 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;
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", filename, plugin->interface, testmode);
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
+ "Starting gnunet-wlan-helper process cmd: %s %s %i\n", filenamehw,
+ plugin->interface, testmode);
#endif
- /* Start the server process */
+ 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, filename,filename, plugin->interface, ((testmode==1)?"1":(testmode==2)?"2":"0"), NULL);
+ 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,
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
"Failed to start gnunet-wlan-helper process\n");
#endif
return GNUNET_SYSERR;
GNUNET_assert(plugin->server_read_task == GNUNET_SCHEDULER_NO_TASK);
#if DEBUG_wlan
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
"Adding server_read_task for the wlan-helper\n");
#endif
- sleep(2);
-
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
*/
-//TODO doxigen
+
//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,
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG,
"libgnunet_plugin_transport_wlan_done started\n");
#endif
- GNUNET_assert(cls !=NULL);
+ 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);
+ //free sessions
+ 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;
+ }
+
+ if (plugin->suid_tokenizer != NULL)
+ GNUNET_SERVER_mst_destroy(plugin->suid_tokenizer);
- if (plugin->consoltoken != NULL)
- GNUNET_SERVER_mst_destroy(plugin->consoltoken);
+ if (plugin->data_tokenizer != NULL)
+ GNUNET_SERVER_mst_destroy(plugin->data_tokenizer);
GNUNET_free_non_null(plugin->interface);
GNUNET_free (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;
+ static unsigned long long testmode = 0;
GNUNET_assert(cls !=NULL);
plugin = GNUNET_malloc (sizeof (struct Plugin));
plugin->env = env;
plugin->pendingsessions = 0;
- plugin->session_count = 0;
+ plugin->mac_count = 0;
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);
+ plugin->suid_tokenizer = GNUNET_SERVER_mst_create(&wlan_process_helper,
+ plugin);
- if (GNUNET_CONFIGURATION_have_value(env->cfg, "transport-wlan", "TESTMODE"))
- {
- if (GNUNET_SYSERR == GNUNET_CONFIGURATION_get_value_number(env->cfg, "transport-wlan",
- "TESTMODE", &testmode))
- return NULL;
- }
-
- 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){
- libgnunet_plugin_transport_wlan_done(plugin);
- return NULL;
- }
- }
-
- wlan_transport_start_wlan_helper(plugin, testmode);
- plugin->consoltoken = GNUNET_SERVER_mst_create(&wlan_process_helper,plugin);
+ plugin->data_tokenizer = GNUNET_SERVER_mst_create(&process_data, plugin);
//plugin->sessions = GNUNET_malloc (sizeof (struct Sessionqueue));
- //plugin->pending_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->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
+ }
+
+ 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)
+ {
+ libgnunet_plugin_transport_wlan_done(api);
+ return NULL;
+ }
+ }
+ //start the plugin
+ set_next_beacon_time(plugin);
- start_next_message_id();
+ wlan_transport_start_wlan_helper(plugin, testmode);
#if DEBUG_wlan
- GNUNET_log (GNUNET_ERROR_TYPE_DEBUG,
- "wlan init finished\n");
+ GNUNET_log(GNUNET_ERROR_TYPE_DEBUG, "wlan init finished\n");
#endif
return api;
projects / oweals / gnunet.git / blobdiff