Removed submodules

lab5-net/main.c

@@ -0,0 +1,106 @@
+/*
+ * CS 361: Template project driver
+ *
+ * Name:
+ */
+
+#include <assert.h>
+#include <getopt.h>
+#include <inttypes.h>
+#include <netdb.h>
+#include <stdbool.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/socket.h>
+#include <sys/types.h>
+
+#include "client.h"
+
+int cmdline (int, char **, char **, bool *, short int *);
+
+void
+usage (void)
+{
+  printf ("Usage: net [options] domain\n");
+  printf (" Options are:\n");
+  printf ("  -6      Use IPv6 addresses\n");
+  printf ("  -p P    Lookup address for application protocol P\n");
+}
+
+int
+main (int argc, char **argv)
+{
+  char *protocol = "http";
+  bool ipv6 = false;
+  short int port = 0;
+  if (cmdline (argc, argv, &protocol, &ipv6, &port) < 0)
+    {
+      usage ();
+      return EXIT_FAILURE;
+    }
+  char *domain = argv[optind];
+
+  // MINIMUM requirements:
+  //   Get the server list for the specified domain and protocol
+  //   Given this command-line:
+  //     ./net -p http www.jmu.edu
+  //   Print the following output:
+  //     www.jmu.edu http: TCP IPv4 134.126.10.50
+  //   The requested transport-layer protocol should be based on the
+  //   requested application-layer protocol. TCP is default, but use
+  //   UDP for protocols "53", "67", "dns", or "dhcp".
+
+  bool tcp = true;
+  char *udpProtocols[] = { "53", "67", "dns", "dhcp" };
+
+  for (size_t i = 0; i < 4; i++)
+    {
+      if (strcmp (protocol, udpProtocols[i]) == 0)
+        {
+          tcp = false;
+          break;
+        }
+    }
+
+  struct addrinfo *server = get_server_list (domain, protocol, tcp, ipv6);
+  char *server_string = serv_string (server);
+
+  printf ("%s %s: %s\n", domain, protocol, server_string);
+  free (server);
+  free (server_string);
+
+  return EXIT_SUCCESS;
+}
+
+/* DO NOT MODIFY THIS FUNCTION */
+
+int
+cmdline (int argc, char **argv, char **protocol, bool *ipv6, short int *port)
+{
+  int option;
+
+  while ((option = getopt (argc, argv, "p:6sh")) != -1)
+    {
+      switch (option)
+        {
+          // Change this to merge -p and -o as same flag
+        case 'p':
+          *protocol = optarg;
+          break;
+        case '6':
+          *ipv6 = true;
+          break;
+        case 'h':
+          return -1;
+          break;
+        default:
+          return -1;
+        }
+    }
+
+  if (optind != argc - 1)
+    return -1;
+
+  return 0;
+}