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DHT_size now returns correct size for packed nodes.

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irungentoo 2015-07-14 22:52:48 -04:00
parent 0444829dde
commit f15cb89a95
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GPG Key ID: 10349DC9BED89E98
1 changed files with 16 additions and 10 deletions
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26
toxcore/DHT.c
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@ -177,6 +177,9 @@ int to_host_family(IP *ip)
}
}
#define PACKED_NODE_SIZE_IP4 (1 + SIZE_IP4 + sizeof(uint16_t) + crypto_box_PUBLICKEYBYTES)
#define PACKED_NODE_SIZE_IP6 (1 + SIZE_IP6 + sizeof(uint16_t) + crypto_box_PUBLICKEYBYTES)
/* Pack number of nodes into data of maxlength length.
*
* return length of packed nodes on success.
@ -207,7 +210,7 @@ int pack_nodes(uint8_t *data, uint16_t length, const Node_format *nodes, uint16_
}
if (ipv6 == 0) {
uint32_t size = 1 + SIZE_IP4 + sizeof(uint16_t) + crypto_box_PUBLICKEYBYTES;
uint32_t size = PACKED_NODE_SIZE_IP4;
if (packed_length + size > length)
return -1;
@ -218,7 +221,7 @@ int pack_nodes(uint8_t *data, uint16_t length, const Node_format *nodes, uint16_
memcpy(data + packed_length + 1 + SIZE_IP4 + sizeof(uint16_t), nodes[i].public_key, crypto_box_PUBLICKEYBYTES);
packed_length += size;
} else if (ipv6 == 1) {
uint32_t size = 1 + SIZE_IP6 + sizeof(uint16_t) + crypto_box_PUBLICKEYBYTES;
uint32_t size = PACKED_NODE_SIZE_IP6;
if (packed_length + size > length)
return -1;
@ -275,7 +278,7 @@ int unpack_nodes(Node_format *nodes, uint16_t max_num_nodes, uint16_t *processed
}
if (ipv6 == 0) {
uint32_t size = 1 + SIZE_IP4 + sizeof(uint16_t) + crypto_box_PUBLICKEYBYTES;
uint32_t size = PACKED_NODE_SIZE_IP4;
if (len_processed + size > length)
return -1;
@ -287,7 +290,7 @@ int unpack_nodes(Node_format *nodes, uint16_t max_num_nodes, uint16_t *processed
len_processed += size;
++num;
} else if (ipv6 == 1) {
uint32_t size = 1 + SIZE_IP6 + sizeof(uint16_t) + crypto_box_PUBLICKEYBYTES;
uint32_t size = PACKED_NODE_SIZE_IP6;
if (len_processed + size > length)
return -1;
@ -2266,26 +2269,30 @@ void kill_DHT(DHT *dht)
#define DHT_STATE_COOKIE_TYPE 0x11ce
#define DHT_STATE_TYPE_NODES 4
#define MAX_SAVED_DHT_NODES (((DHT_FAKE_FRIEND_NUMBER * MAX_FRIEND_CLIENTS) + LCLIENT_LIST) * 2)
/* Get the size of the DHT (for saving). */
uint32_t DHT_size(const DHT *dht)
{
uint32_t num = 0, i, j;
uint32_t numv4 = 0, numv6 = 0, i, j;
for (i = 0; i < LCLIENT_LIST; ++i) {
num += (dht->close_clientlist[i].assoc4.timestamp != 0) + (dht->close_clientlist[i].assoc6.timestamp != 0);
numv4 += (dht->close_clientlist[i].assoc4.timestamp != 0);
numv6 += (dht->close_clientlist[i].assoc6.timestamp != 0);
}
for (i = 0; i < DHT_FAKE_FRIEND_NUMBER && i < dht->num_friends; ++i) {
DHT_Friend *fr = &dht->friends_list[i];
for (j = 0; j < MAX_FRIEND_CLIENTS; ++j) {
num += (fr->client_list[j].assoc4.timestamp != 0) + (fr->client_list[j].assoc6.timestamp != 0);
numv4 += (fr->client_list[j].assoc4.timestamp != 0);
numv6 += (fr->client_list[j].assoc6.timestamp != 0);
}
}
uint32_t size32 = sizeof(uint32_t), sizesubhead = size32 * 2;
return size32
+ sizesubhead + sizeof(Node_format) * num;
return size32 + sizesubhead + (PACKED_NODE_SIZE_IP4 * numv4) + (PACKED_NODE_SIZE_IP6 * numv6);
}
static uint8_t *z_state_save_subheader(uint8_t *data, uint32_t len, uint16_t type)
@ -2297,7 +2304,6 @@ static uint8_t *z_state_save_subheader(uint8_t *data, uint32_t len, uint16_t typ
return data;
}
#define MAX_SAVED_DHT_NODES ((DHT_FAKE_FRIEND_NUMBER * MAX_FRIEND_CLIENTS) + LCLIENT_LIST)
/* Save the DHT in data where data is an array of size DHT_size(). */
void DHT_save(DHT *dht, uint8_t *data)