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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include <sys/socket.h>
#include <netdb.h>
#include <arpa/inet.h>
#include "log.h"
#include "server.h"
struct sock_t {
int sockfd;
char ip[INET6_ADDRSTRLEN];
};
static void *get_in_addr(struct sockaddr *sa)
{
if (sa->sa_family == AF_INET) {
return &(((struct sockaddr_in*)sa)->sin_addr);
}
return &(((struct sockaddr_in6*)sa)->sin6_addr);
}
int server_start(char *port, sock_t *sock)
{
struct addrinfo hints, *servinfo;
int rv;
memset(&hints, 0, sizeof hints);
hints.ai_family = AF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
hints.ai_flags = AI_PASSIVE; // use my IP
if ((rv = getaddrinfo(NULL, port, &hints, &servinfo)) != 0) {
err("getaddrinfo: %s", gai_strerror(rv));
return 1;
}
// loop through all the results and bind to the first we can
struct addrinfo *p = NULL;
for(p = servinfo; p != NULL; p = p->ai_next) {
if ((sock->sockfd = socket(p->ai_family, p->ai_socktype,
p->ai_protocol)) == -1) {
err("socker: %s", strerror(errno));
continue;
}
int yes=1;
if (setsockopt(sock->sockfd, SOL_SOCKET, SO_REUSEADDR, &yes,
sizeof(int)) == -1) {
err("setsockopt: %s", strerror(errno));
return 1;
}
if (bind(sock->sockfd, p->ai_addr, p->ai_addrlen) == -1) {
close(sock->sockfd);
err("bind: %s", strerror(errno));
continue;
}
break;
}
if (p == NULL) {
err("server: failed to bind");
return 1;
}
freeaddrinfo(servinfo);
if(listen(sock->sockfd, 10) == -1) {
err("listen: %s", strerror(errno));
return 1;
}
return 0;
}
int server_accept(sock_t *sock, sock_t *conn)
{
struct sockaddr_storage conn_addr;
socklen_t sz = sizeof(conn_addr);
conn->sockfd = accept(sock->sockfd, (struct sockaddr *)&conn_addr, &sz);
if(conn->sockfd == -1) {
err("accept: %s", strerror(errno));
return 1;
}
inet_ntop(conn_addr.ss_family,
get_in_addr((struct sockaddr *)&conn_addr),
conn->ip, sizeof(conn->ip));
return 0;
}
ssize_t server_send(sock_t *sock, char *buf, size_t sz)
{
return send(sock->sockfd, buf, sz, 0);
}
ssize_t server_recv(sock_t *sock, char *buf, size_t sz)
{
return recv(sock->sockfd, buf, sz, 0);
}
char *server_connection_ip(sock_t *conn)
{
return conn->ip;
}
sock_t *server_sock_create()
{
return (sock_t *)malloc(sizeof(sock_t));
}
void server_sock_close(sock_t *s)
{
close(s->sockfd);
free(s);
}
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