add tracinc

diff --git a/int/int.c b/int/int.c
index 9d6fde3..37859cc 100644 (file)
--- a/int/int.c
+++ b/int/int.c
@@ -12,8 +12,6 @@
 
 #include "mTaskSymbols.h"
 
-#define PORT 8123
-
 #define MAXTASKS 5
 #define MAXTASKSIZE 1024
 #define MAXSDS 50
@@ -44,6 +42,7 @@ struct task {
 struct task tasks[MAXTASKS] = {0};
 int sock_fd = -1;
 int fd = -1;
+int port = 8123;
 
 void killHandler(int i)
 {
@@ -246,7 +245,7 @@ void open_filedescriptors()
        bzero((char *) &sa, sizeof(sa));
        sa.sin_family = AF_INET;
        sa.sin_addr.s_addr = INADDR_ANY;
-       sa.sin_port = htons(PORT);
+       sa.sin_port = htons(port);
 
        if((sock_fd = socket(AF_INET, SOCK_STREAM, 0)) == -1)
                pdie("socket");
@@ -255,13 +254,22 @@ void open_filedescriptors()
        if(listen(sock_fd, 10) == -1)
                pdie("bind\n");
 
-       printf("Listening on %d\n", PORT);
+       printf("Listening on %d\n", port);
        fflush(stdout);
        if((fd = accept(sock_fd, (struct sockaddr*)NULL, NULL)) == -1)
                pdie("accept");
 }
 
-int main(void)
+void usage(FILE *o, char *arg0){
+       fprintf(o,
+               "Usage: %s [opts]\n"
+               "\n"
+               "Options\n"
+               "-p PORT  Custom port number, default: 8123\n"
+               , arg0);
+}
+
+int main(int argc, char *argv[])
 {
        int ct;
 
@@ -273,6 +281,25 @@ int main(void)
                die("Couldn't register signal handler...\n");
        }
 
+       //Command line arguments
+       int opt;
+       while((opt = getopt(argc, argv, "hp:")) != -1){
+               switch(opt){
+                       case 'p':
+                               port = atoi(optarg);
+                               if(port < 1)
+                                       die("Port numbers are > 1\n");
+                               break;
+                       case 'h':
+                               usage(stdout, argv[0]);
+                               exit(EXIT_SUCCESS);
+                       default:
+                               usage(stderr, argv[0]);
+                               exit(EXIT_FAILURE);
+               }
+
+       }
+
        open_filedescriptors();
 
        while(true){