From 5e1ae8b33873661b669eda509fcd000f8a964126 Mon Sep 17 00:00:00 2001
From: kartofen <mladenovnasko0@gmail.com>
Date: Thu, 26 Jan 2023 14:58:09 +0200
Subject: very simple work withs html based on file path

---
 src/server.c | 122 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 122 insertions(+)
 create mode 100644 src/server.c

(limited to 'src/server.c')

diff --git a/src/server.c b/src/server.c
new file mode 100644
index 0000000..73a8d59
--- /dev/null
+++ b/src/server.c
@@ -0,0 +1,122 @@
+#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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