summaryrefslogtreecommitdiffstats
path: root/src/receive.c
diff options
context:
space:
mode:
authorMatthias Schiffer <mschiffer@universe-factory.net>2014-05-28 04:52:58 +0200
committerMatthias Schiffer <mschiffer@universe-factory.net>2014-05-28 04:52:58 +0200
commitd5da100c55d80391d2e941a41c0e0dccf2a6e33e (patch)
tree1aca67556ed8ea1e2f9fa2a73ebf1a84e8cd34a7 /src/receive.c
parentd859894f7a88e07e7beae8dc355278cfd6c185e2 (diff)
downloadfastd-d5da100c55d80391d2e941a41c0e0dccf2a6e33e.tar
fastd-d5da100c55d80391d2e941a41c0e0dccf2a6e33e.zip
Still more documentation
Diffstat (limited to 'src/receive.c')
-rw-r--r--src/receive.c16
1 files changed, 16 insertions, 0 deletions
diff --git a/src/receive.c b/src/receive.c
index 3813d7f..aae4f8f 100644
--- a/src/receive.c
+++ b/src/receive.c
@@ -23,6 +23,12 @@
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
+/**
+ \file
+
+ Functions for receiving and handling packets
+*/
+
#include "fastd.h"
#include "handshake.h"
@@ -30,6 +36,7 @@
#include "peer_hashtable.h"
+/** Handles the ancillary control messages of received packets */
static inline void handle_socket_control(struct msghdr *message, const fastd_socket_t *sock, fastd_peer_address_t *local_addr) {
memset(local_addr, 0, sizeof(fastd_peer_address_t));
@@ -77,6 +84,11 @@ static inline void handle_socket_control(struct msghdr *message, const fastd_soc
}
}
+/**
+ Checks if a handshake should be sent after an unexpected payload packet has been received
+
+ backoff_unknown() tries to avoid flooding hosts with handshakes.
+*/
static bool backoff_unknown(const fastd_peer_address_t *addr) {
size_t i;
for (i = 0; i < array_size(ctx.unknown_handshakes); i++) {
@@ -104,6 +116,7 @@ static bool backoff_unknown(const fastd_peer_address_t *addr) {
return false;
}
+/** Handles a packet received from a known peer address */
static inline void handle_socket_receive_known(fastd_socket_t *sock, const fastd_peer_address_t *local_addr, const fastd_peer_address_t *remote_addr, fastd_peer_t *peer, fastd_buffer_t buffer) {
if (!fastd_peer_may_connect(peer)) {
fastd_buffer_free(buffer);
@@ -131,10 +144,12 @@ static inline void handle_socket_receive_known(fastd_socket_t *sock, const fastd
}
}
+/** Determines if packets from known addresses are accepted */
static inline bool allow_unknown_peers(void) {
return conf.has_floating || fastd_allow_verify();
}
+/** Handles a packet received from an unknown address */
static inline void handle_socket_receive_unknown(fastd_socket_t *sock, const fastd_peer_address_t *local_addr, const fastd_peer_address_t *remote_addr, fastd_buffer_t buffer) {
const uint8_t *packet_type = buffer.data;
fastd_buffer_push_head(&buffer, 1);
@@ -152,6 +167,7 @@ static inline void handle_socket_receive_unknown(fastd_socket_t *sock, const fas
}
}
+/** Handles a packet read from a socket */
static inline void handle_socket_receive(fastd_socket_t *sock, const fastd_peer_address_t *local_addr, const fastd_peer_address_t *remote_addr, fastd_buffer_t buffer) {
fastd_peer_t *peer = NULL;