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Added untested address book

This commit is contained in:
j4nk 2023-06-08 22:07:58 -04:00
parent 5ff3743472
commit 1678fa286b
2 changed files with 54 additions and 6 deletions
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57
oct_networking.c
View File

@ -24,6 +24,9 @@ struct {
int sfd;
} oct_network_node;
// Address book currently implemented as a doubly-linked list with O(n) inserts, accesses
// Ideal implementation is hash table with O(1) inserts, accesses
// However, we'll see if this works for now
struct {
unsigned int size;
struct oct_network_ab_entry* first;
@ -198,11 +201,55 @@ void oct_network_ab_init() {
int oct_network_ab_insert(char* addr, char* port) {
// First create the entry
struct oct_network_ab_entry* e = (struct oct_network_ab_entry*)malloc(sizeof(struct oct_network_ab_entry));
if (!e) {
OCT_LOG_ERROR("Could not allocate space for address book entry for %s:%s", addr, port);
}
// Then, create the socket
// TODO
if ((e->sfd = oct_network_init_socket(addr, port)) < 0) {
free(e);
return 0;
}
e->next = NULL;
e->prev = oct_network_ab.last;
strncpy(e->addr, addr, NI_MAXHOST);
strncpy(e->port, port, NI_MAXSERV);
if (oct_network_ab.size == 0) {
oct_network_ab.first = e;
}
else {
oct_network_ab.last->next = e;
}
oct_network_ab.last = e;
oct_network_ab.size++;
return 0;
return 1;
}
int oct_network_ab_remove(struct oct_network_ab_entry* e) {
// First, remove node from linked list and fix
if (e == oct_network_ab.first) {
oct_network_ab.first = e->next;
e->next->prev = NULL;
}
else if (e == oct_network_ab.last) {
oct_network_ab.last = e->prev;
e->prev->next = NULL;
}
else {
e->next->prev = e->prev;
e->prev->next = e->next;
}
// Finally, get rid of node
close(e->sfd);
free(e);
oct_network_ab.size--;
return 1;
}
void oct_network_ab_deinit() {
while (oct_network_ab.first) {
oct_network_ab_remove(oct_network_ab.first);
}
}

3
oct_networking.h
View File

@ -16,6 +16,7 @@ struct oct_network_ab_entry {
char addr[NI_MAXHOST];
char port[NI_MAXSERV];
struct oct_network_ab_entry* next;
struct oct_network_ab_entry* prev;
};
int oct_network_node_init(char* port, lua_State* L);
@ -31,7 +32,7 @@ int oct_network_send_msg_lua(lua_State* L);
void oct_network_ab_init();
int oct_network_ab_insert(char* addr, char* port);
int oct_network_ab_remove(struct oct_network_ab_entry* e);
int oct_network_ab_deinit();
void oct_network_ab_deinit();
#endif