server.c: Move accept syscall to server_listen function

1 files changed, 64 insertions, 0 deletions

diff --git a/server.c b/server.c
index d7edb04..f8068aa 100644
--- a/server.c
+++ b/server.c
@@ -1,11 +1,32 @@
+/*
+ * Papo IRC Server
+ * Copyright (C) 2021 Johnny Richard
+ * 
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ * 
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ * 
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
 #include "server.h"
 
 #include <netinet/in.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <string.h>
 #include <sys/socket.h>
 #include <unistd.h>
 
+#define BUFFER_SIZE 1024
+#define EXIT_COMMAND "exit"
+
 server_t
 server_create(uint32_t port)
 {
@@ -39,3 +60,46 @@ server_create(uint32_t port)
 
   return (server_t) { .fd = server_fd };
 }
+
+void
+server_listen(server_t *server)
+{
+  struct sockaddr_in client;
+  socklen_t client_len = sizeof(client);
+
+  server->running = true;
+
+  while (server->running) {
+    int client_fd = accept(server->fd, (struct sockaddr *) &client, &client_len);
+    if (client_fd == -1) {
+      perror("[ERROR] could not accept connection");
+      close(server->fd);
+      exit(EXIT_FAILURE);
+    }
+    while (true) {
+      char client_buf[BUFFER_SIZE];
+      memset(client_buf, 0, BUFFER_SIZE);
+
+      if (recv(client_fd, client_buf, BUFFER_SIZE, 0) == -1) {
+        perror("[ERROR] could not read data from client");
+        continue;
+      }
+
+      if (!strncasecmp(client_buf, EXIT_COMMAND, strlen(EXIT_COMMAND) - 1)) {
+        puts("[INFO] exiting program. bye bye!");
+        close(client_fd);
+        close(server->fd);
+        exit(EXIT_SUCCESS);
+      }
+
+      if (send(client_fd, client_buf, BUFFER_SIZE, 0) == -1) {
+        perror("[ERROR] could not send data to client");
+        continue;
+      }
+    }
+
+    close(client_fd);
+    close(server->fd);
+    exit(EXIT_SUCCESS);
+  }
+}