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Some dynamic memory allocation added to the DHT.

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irungentoo 2013-07-14 11:50:34 -04:00
parent 084185a2c2
commit 6e1390554c
1 changed files with 29 additions and 16 deletions
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45
core/DHT.c
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@ -41,6 +41,7 @@ typedef struct
{
uint8_t client_id[CLIENT_ID_SIZE];
Client_data client_list[MAX_FRIEND_CLIENTS];
uint32_t lastgetnode;//time at which the last get_nodes request was sent.
}Friend;
@ -69,11 +70,8 @@ uint8_t self_secret_key[crypto_box_SECRETKEYBYTES];
static Client_data close_clientlist[LCLIENT_LIST];
//Hard maximum number of friends
#define MAX_FRIENDS 256
//Let's start with a static array for testing.
static Friend friends_list[MAX_FRIENDS];
static Friend * friends_list;
static uint16_t num_friends;
//The list of ip ports along with the ping_id of what we sent them and a timestamp
@ -370,7 +368,7 @@ int is_gettingnodes(IP_Port ip_port, uint64_t ping_id)
uint8_t pinging;
uint32_t temp_time = unix_time();
for(i = 0; i < LPING_ARRAY; i++ )
for(i = 0; i < LSEND_NODES_ARRAY; i++ )
{
if((send_nodes[i].timestamp + PING_TIMEOUT) > temp_time)
{
@ -765,14 +763,26 @@ int handle_sendnodes(uint8_t * packet, uint32_t length, IP_Port source)
int DHT_addfriend(uint8_t * client_id)
{
//TODO:Maybe make the array of friends dynamic instead of a static array with MAX_FRIENDS
if(MAX_FRIENDS > num_friends)
Friend * temp;
if(num_friends == 0)
{
memcpy(friends_list[num_friends].client_id, client_id, CLIENT_ID_SIZE);
num_friends++;
return 0;
temp = malloc(sizeof(Friend));
}
return 1;
if(num_friends > 0)
{
temp = realloc(friends_list, sizeof(Friend) * (num_friends + 1));
}
if(temp == NULL)
{
return 1;
}
friends_list = temp;
memset(&friends_list[num_friends], 0, sizeof(Friend));
memcpy(friends_list[num_friends].client_id, client_id, CLIENT_ID_SIZE);
num_friends++;
return 0;
}
@ -783,17 +793,22 @@ int DHT_addfriend(uint8_t * client_id)
int DHT_delfriend(uint8_t * client_id)
{
uint32_t i;
Friend * temp;
for(i = 0; i < num_friends; i++)
{
if(memcmp(friends_list[i].client_id, client_id, CLIENT_ID_SIZE) == 0)//Equal
{
memcpy(friends_list[num_friends].client_id, friends_list[i].client_id, CLIENT_ID_SIZE);
num_friends--;
temp = realloc(friends_list, sizeof(friends_list) * (num_friends));
if(temp != NULL)
{
friends_list = temp;
}
return 0;
}
}
return 1;
}
@ -866,8 +881,6 @@ int DHT_handlepacket(uint8_t * packet, uint32_t length, IP_Port source)
//Ping each client in the "friends" list every 60 seconds.
//Send a get nodes request every 20 seconds to a random good node for each "friend" in our "friends" list.
static uint32_t friend_lastgetnode[MAX_FRIENDS];
void doDHTFriends()
{
@ -895,13 +908,13 @@ void doDHTFriends()
}
}
}
if(friend_lastgetnode[i] + GET_NODE_INTERVAL <= temp_time && num_nodes != 0)
if(friends_list[i].lastgetnode + GET_NODE_INTERVAL <= temp_time && num_nodes != 0)
{
rand_node = rand() % num_nodes;
getnodes(friends_list[i].client_list[index[rand_node]].ip_port,
friends_list[i].client_list[index[rand_node]].client_id,
friends_list[i].client_id);
friend_lastgetnode[i] = temp_time;
friends_list[i].lastgetnode = temp_time;
}
}
}