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Reduced the risk of two people being given the same peer id in groups.

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irungentoo 2014-10-04 13:00:26 -04:00
parent 07ab8e5287
commit cafbdd5d94
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GPG Key ID: 10349DC9BED89E98
1 changed files with 12 additions and 1 deletions
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13
toxcore/group.c
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@ -978,6 +978,18 @@ static void handle_friend_invite_packet(Messenger *m, int32_t friendnumber, cons
if (memcmp(data + 1 + sizeof(uint16_t) * 2, g->identifier, GROUP_IDENTIFIER_LENGTH) != 0)
return;
uint16_t peer_number = rand(); /* TODO: what if two people enter the group at the same time and
are given the same peer_number by different nodes? */
unsigned int tries = 0;
while (get_peer_index(g, peer_number) != -1) {
peer_number = rand();
++tries;
if (tries > 32)
return;
}
memcpy(&other_groupnum, data + 1, sizeof(uint16_t));
other_groupnum = ntohs(other_groupnum);
@ -985,7 +997,6 @@ static void handle_friend_invite_packet(Messenger *m, int32_t friendnumber, cons
uint8_t real_pk[crypto_box_PUBLICKEYBYTES], temp_pk[crypto_box_PUBLICKEYBYTES];
get_friendcon_public_keys(real_pk, temp_pk, g_c->fr_c, friendcon_id);
uint16_t peer_number = rand(); /* TODO: make it not random. */
addpeer(g_c, groupnum, real_pk, temp_pk, peer_number);
int close_index = add_conn_to_groupchat(g_c, friendcon_id, groupnum, 0, 1);