initial version of hashmap works

include/hashmap.h

@@ -1,9 +1,10 @@
 #ifndef __HASHMAP_C__
 #define __HASHMAP_C__
 
+#include <string.h>
 #include <sys/socket.h>
 
-#define HASHMAP_MAX_ITEMS 10000
+#define HASHMAP_MAX_CLIENTS 10000
 
 struct hashmap {
 	int sockfd;
@@ -11,6 +12,8 @@ struct hashmap {
 };
 
 int hash(int sockfd);
+void hm_init(struct hashmap *map);
 void hm_insert(struct hashmap *map, int sockfd, struct sockaddr_storage *sas);
+struct hashmap *hm_lookup(struct hashmap *map, int sockfd);
 
 #endif

include/server.h

@@ -26,6 +26,5 @@ void epoll_ctl_add(int epfd, int sockfd, uint32_t events);
 void epoll_ctl_del(int epfd, int sockfd);
 void setnonblocking(int sockfd);
 int handle_new_client(int sockfd, struct sockaddr_storage *their_sa, socklen_t *theirsa_size);
-void print_client_ip(struct sockaddr_in *sin);
 
 #endif

include/utils.h

@@ -12,5 +12,6 @@
 
 // print every IPs of a hostname
 void print_ips(const char *hostname, const char *port);
+void get_client_ip(struct sockaddr_storage *sa, char *ip);
 
 #endif