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make friendlist resize dynamically

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Luke Champine 2013-08-08 10:49:36 -04:00
parent e8ee3c0cd3
commit 815628b76a
1 changed files with 31 additions and 7 deletions
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38
core/Messenger.c
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@ -51,16 +51,31 @@ static uint8_t *self_statusmessage;
static uint16_t self_statusmessage_len; static uint16_t self_statusmessage_len;
static USERSTATUS self_userstatus; static USERSTATUS self_userstatus;
#define MAX_NUM_FRIENDS 256 static Friend *friendlist;
static uint32_t numallocated;
static Friend friendlist[MAX_NUM_FRIENDS];
static uint32_t numfriends; static uint32_t numfriends;
/* 1 if we are online /* 1 if we are online
0 if we are offline 0 if we are offline
static uint8_t online; */ static uint8_t online; */
/* double the size of the friend list
return -1 if realloc fails */
int realloc_friendlist(void) {
if (numallocated == 0)
numallocated = 1; /* initial size */
else
numallocated *= 2; /* double each time */
Friend *newfriendlist = realloc(friendlist, numallocated*sizeof(Friend));
if (newfriendlist == NULL)
return -1;
friendlist = newfriendlist;
return 0;
}
/* return the friend id associated to that public key. /* return the friend id associated to that public key.
return -1 if no such friend */ return -1 if no such friend */
int getfriend_id(uint8_t *client_id) int getfriend_id(uint8_t *client_id)
@ -118,8 +133,12 @@ int m_addfriend(uint8_t *client_id, uint8_t *data, uint16_t length)
if (getfriend_id(client_id) != -1) if (getfriend_id(client_id) != -1)
return FAERR_ALREADYSENT; return FAERR_ALREADYSENT;
/* resize the friend list if necessary */
if (numfriends + 1 > numallocated)
realloc_friendlist();
uint32_t i; uint32_t i;
for (i = 0; i <= numfriends && i <= MAX_NUM_FRIENDS; ++i) { /*TODO: dynamic memory allocation to allow for more than MAX_NUM_FRIENDS friends */ for (i = 0; i <= numfriends; ++i) {
if (friendlist[i].status == NOFRIEND) { if (friendlist[i].status == NOFRIEND) {
DHT_addfriend(client_id); DHT_addfriend(client_id);
friendlist[i].status = FRIEND_ADDED; friendlist[i].status = FRIEND_ADDED;
@ -145,8 +164,13 @@ int m_addfriend_norequest(uint8_t * client_id)
{ {
if (getfriend_id(client_id) != -1) if (getfriend_id(client_id) != -1)
return -1; return -1;
/* resize the friend list if necessary */
if (numfriends + 1 > numallocated)
realloc_friendlist();
uint32_t i; uint32_t i;
for (i = 0; i <= numfriends && i <= MAX_NUM_FRIENDS; ++i) { /*TODO: dynamic memory allocation to allow for more than MAX_NUM_FRIENDS friends */ for (i = 0; i <= numfriends; ++i) {
if(friendlist[i].status == NOFRIEND) { if(friendlist[i].status == NOFRIEND) {
DHT_addfriend(client_id); DHT_addfriend(client_id);
friendlist[i].status = FRIEND_REQUESTED; friendlist[i].status = FRIEND_REQUESTED;
@ -158,7 +182,7 @@ int m_addfriend_norequest(uint8_t * client_id)
friendlist[i].userstatus = USERSTATUS_NONE; friendlist[i].userstatus = USERSTATUS_NONE;
friendlist[i].message_id = 0; friendlist[i].message_id = 0;
friendlist[i].receives_read_receipts = 1; /* default: YES */ friendlist[i].receives_read_receipts = 1; /* default: YES */
numfriends++; ++numfriends;
return i; return i;
} }
} }