retrieve directory listing in active mode

[oftp] / src / main.c

diff --git a/src/main.c b/src/main.c
index c2820ba..89ab3e2 100644 (file)
--- a/src/main.c
+++ b/src/main.c
@@ -2,30 +2,40 @@
 #include <string.h>
 #include <signal.h>
 #include <errno.h>
+#include <assert.h>
 #include <sys/select.h>
 #include "tgfx.h"
 #include "input.h"
+#include "util.h"
 #include "tui.h"
 #include "ftp.h"
 
 void updateui(void);
 int proc_input(void);
 int keypress(int key);
+int parse_args(int argc, char **argv);
 
-struct ftp *ftp;
-struct tui_widget *uilist;
+static struct ftp *ftp;
+static struct tui_widget *uilist;
 
-int main(void)
+static char *host = "localhost";
+static int port = 21;
+
+int main(int argc, char **argv)
 {
        int i, numsock, maxfd;
        int ftpsock[16];
        fd_set rdset;
        struct timeval tv;
 
+       if(parse_args(argc, argv) == -1) {
+               return 1;
+       }
+
        if(!(ftp = ftp_alloc())) {
                return 1;
        }
-       if(ftp_connect(ftp, "192.168.0.4", 21) == -1) {
+       if(ftp_connect(ftp, host, port) == -1) {
                ftp_free(ftp);
                return 1;
        }
@@ -141,3 +151,51 @@ int keypress(int key)
        }
        return 0;
 }
+
+static const char *usage = "Usage: %s [options] [hostname] [port]\n"
+       "Options:\n"
+       "  -h: print usage information and exit\n";
+
+int parse_args(int argc, char **argv)
+{
+       int i, argidx = 0;
+
+       for(i=1; i<argc; i++) {
+               if(argv[i][0] == '-') {
+                       if(argv[i][2] != 0) {
+                               goto inval;
+                       }
+                       switch(argv[i][1]) {
+                       case 'h':
+                               printf(usage, argv[0]);
+                               exit(0);
+
+                       default:
+                               goto inval;
+                       }
+
+               } else {
+                       switch(argidx++) {
+                       case 0:
+                               host = argv[i];
+                               break;
+
+                       case 1:
+                               if((port = atoi(argv[i])) <= 0) {
+                                       fprintf(stderr, "invalid port number: %s\n", argv[i]);
+                                       return -1;
+                               }
+                               break;
+
+                       default:
+                               goto inval;
+                       }
+               }
+       }
+
+       return 0;
+inval:
+       fprintf(stderr, "invalid argument: %s\n", argv[i]);
+       fprintf(stderr, usage, argv[0]);
+       return -1;
+}