int m_addfriend_norequest(uint8_t * client_id)
{
if (getfriend_id(client_id) != -1)
return -1;
/* resize the friend list if necessary */
realloc_friendlist(numfriends + 1);
uint32_t i;
for (i = 0; i <= numfriends; ++i) {
if(friendlist[i].status == NOFRIEND) {
DHT_addfriend(client_id);
friendlist[i].status = FRIEND_REQUESTED;
friendlist[i].crypt_connection_id = -1;
friendlist[i].friend_request_id = -1;
memcpy(friendlist[i].client_id, client_id, CLIENT_ID_SIZE);
friendlist[i].statusmessage = calloc(1, 1);
friendlist[i].statusmessage_length = 1;
friendlist[i].userstatus = USERSTATUS_NONE;
friendlist[i].message_id = 0;
friendlist[i].receives_read_receipts = 1; /* default: YES */
++numfriends;
return i;
}
}
return -1;
}
int m_addfriend_norequest(Messenger *m, uint8_t *client_id)
{
if (getfriend_id(m, client_id) != -1)
return -1;
/* resize the friend list if necessary */
if (realloc_friendlist(m, m->numfriends + 1) != 0)
return FAERR_NOMEM;
memset(&(m->friendlist[m->numfriends]), 0, sizeof(Friend));
uint32_t i;
for (i = 0; i <= m->numfriends; ++i) {
if (m->friendlist[i].status == NOFRIEND) {
DHT_addfriend(client_id);
m->friendlist[i].status = FRIEND_CONFIRMED;
m->friendlist[i].crypt_connection_id = -1;
m->friendlist[i].friendrequest_lastsent = 0;
memcpy(m->friendlist[i].client_id, client_id, CLIENT_ID_SIZE);
m->friendlist[i].statusmessage = calloc(1, 1);
m->friendlist[i].statusmessage_length = 1;
m->friendlist[i].userstatus = USERSTATUS_NONE;
m->friendlist[i].message_id = 0;
m->friendlist[i].receives_read_receipts = 1; /* default: YES */
if (m->numfriends == i)
++ m->numfriends;
return i;
}
}
return -1;
}
/* remove a friend
return 0 if success
return -1 if failure */
int m_delfriend(int friendnumber)
{
if (friendnumber >= numfriends || friendnumber < 0)
return -1;
DHT_delfriend(friendlist[friendnumber].client_id);
crypto_kill(friendlist[friendnumber].crypt_connection_id);
free(friendlist[friendnumber].statusmessage);
memset(&friendlist[friendnumber], 0, sizeof(Friend));
uint32_t i;
for (i = numfriends; i != 0; --i) {
if (friendlist[i-1].status != NOFRIEND)
break;
}
numfriends = i;
realloc_friendlist(numfriends + 1);
return 0;
}
/*
* add a friend
* set the data that will be sent along with friend request
* client_id is the client id of the friend
* data is the data and length is the length
* returns the friend number if success
* return FA_TOOLONG if message length is too long
* return FAERR_NOMESSAGE if no message (message length must be >= 1 byte)
* return FAERR_OWNKEY if user's own key
* return FAERR_ALREADYSENT if friend request already sent or already a friend
* return FAERR_UNKNOWN for unknown error
*/
int m_addfriend(uint8_t *client_id, uint8_t *data, uint16_t length)
{
if (length >= (MAX_DATA_SIZE - crypto_box_PUBLICKEYBYTES
- crypto_box_NONCEBYTES - crypto_box_BOXZEROBYTES
+ crypto_box_ZEROBYTES))
return FAERR_TOOLONG;
if (length < 1)
return FAERR_NOMESSAGE;
if (memcmp(client_id, self_public_key, crypto_box_PUBLICKEYBYTES) == 0)
return FAERR_OWNKEY;
if (getfriend_id(client_id) != -1)
return FAERR_ALREADYSENT;
/* resize the friend list if necessary */
realloc_friendlist(numfriends + 1);
uint32_t i;
for (i = 0; i <= numfriends; ++i) {
if (friendlist[i].status == NOFRIEND) {
DHT_addfriend(client_id);
friendlist[i].status = FRIEND_ADDED;
friendlist[i].crypt_connection_id = -1;
friendlist[i].friend_request_id = -1;
memcpy(friendlist[i].client_id, client_id, CLIENT_ID_SIZE);
friendlist[i].statusmessage = calloc(1, 1);
friendlist[i].statusmessage_length = 1;
friendlist[i].userstatus = USERSTATUS_NONE;
memcpy(friendlist[i].info, data, length);
friendlist[i].info_size = length;
friendlist[i].message_id = 0;
friendlist[i].receives_read_receipts = 1; /* default: YES */
++numfriends;
return i;
}
}
return FAERR_UNKNOWN;
}
/* remove a friend
return 0 if success
return -1 if failure */
int m_delfriend(Messenger *m, int friendnumber)
{
if (friendnumber >= m->numfriends || friendnumber < 0)
return -1;
DHT_delfriend(m->friendlist[friendnumber].client_id);
crypto_kill(m->friendlist[friendnumber].crypt_connection_id);
free(m->friendlist[friendnumber].statusmessage);
memset(&(m->friendlist[friendnumber]), 0, sizeof(Friend));
uint32_t i;
for (i = m->numfriends; i != 0; --i) {
if (m->friendlist[i - 1].status != NOFRIEND)
break;
}
m->numfriends = i;
if (realloc_friendlist(m, m->numfriends) != 0)
return FAERR_NOMEM;
return 0;
}
/*
* add a friend
* set the data that will be sent along with friend request
* address is the address of the friend (returned by getaddress of the friend you wish to add) it must be FRIEND_ADDRESS_SIZE bytes. TODO: add checksum.
* data is the data and length is the length
* returns the friend number if success
* return FA_TOOLONG if message length is too long
* return FAERR_NOMESSAGE if no message (message length must be >= 1 byte)
* return FAERR_OWNKEY if user's own key
* return FAERR_ALREADYSENT if friend request already sent or already a friend
* return FAERR_UNKNOWN for unknown error
* return FAERR_BADCHECKSUM if bad checksum in address
* return FAERR_SETNEWNOSPAM if the friend was already there but the nospam was different
* (the nospam for that friend was set to the new one)
* return FAERR_NOMEM if increasing the friend list size fails
*/
int m_addfriend(Messenger *m, uint8_t *address, uint8_t *data, uint16_t length)
{
if (length >= (MAX_DATA_SIZE - crypto_box_PUBLICKEYBYTES
- crypto_box_NONCEBYTES - crypto_box_BOXZEROBYTES
+ crypto_box_ZEROBYTES))
return FAERR_TOOLONG;
uint8_t client_id[crypto_box_PUBLICKEYBYTES];
memcpy(client_id, address, crypto_box_PUBLICKEYBYTES);
uint16_t check, checksum = address_checksum(address, FRIEND_ADDRESS_SIZE - sizeof(checksum));
memcpy(&check, address + crypto_box_PUBLICKEYBYTES + sizeof(uint32_t), sizeof(check));
if (check != checksum)
return FAERR_BADCHECKSUM;
if (length < 1)
return FAERR_NOMESSAGE;
if (memcmp(client_id, self_public_key, crypto_box_PUBLICKEYBYTES) == 0)
return FAERR_OWNKEY;
int friend_id = getfriend_id(m, client_id);
if (friend_id != -1) {
uint32_t nospam;
memcpy(&nospam, address + crypto_box_PUBLICKEYBYTES, sizeof(nospam));
if (m->friendlist[friend_id].friendrequest_nospam == nospam)
return FAERR_ALREADYSENT;
m->friendlist[friend_id].friendrequest_nospam = nospam;
return FAERR_SETNEWNOSPAM;
}
/* resize the friend list if necessary */
if (realloc_friendlist(m, m->numfriends + 1) != 0)
return FAERR_NOMEM;
memset(&(m->friendlist[m->numfriends]), 0, sizeof(Friend));
uint32_t i;
for (i = 0; i <= m->numfriends; ++i) {
if (m->friendlist[i].status == NOFRIEND) {
DHT_addfriend(client_id);
m->friendlist[i].status = FRIEND_ADDED;
m->friendlist[i].crypt_connection_id = -1;
m->friendlist[i].friendrequest_lastsent = 0;
m->friendlist[i].friendrequest_timeout = FRIENDREQUEST_TIMEOUT;
memcpy(m->friendlist[i].client_id, client_id, CLIENT_ID_SIZE);
m->friendlist[i].statusmessage = calloc(1, 1);
m->friendlist[i].statusmessage_length = 1;
m->friendlist[i].userstatus = USERSTATUS_NONE;
memcpy(m->friendlist[i].info, data, length);
m->friendlist[i].info_size = length;
m->friendlist[i].message_id = 0;
m->friendlist[i].receives_read_receipts = 1; /* default: YES */
memcpy(&(m->friendlist[i].friendrequest_nospam), address + crypto_box_PUBLICKEYBYTES, sizeof(uint32_t));
if (m->numfriends == i)
++ m->numfriends;
return i;
}
}
return FAERR_UNKNOWN;
}
