#include <pcap.h>
#include <gst/gst.h>

static gchar *_omvs_net_dev;
static gchar *_omvs_output = "omvs_out.txt";
static gint _omvs_jobs = 1;
static gint _omvs_sleep = 1000;
static gint _omvs_timeout = 10000;

static GOptionEntry _omvs_entries[] =
{
  { "interface", 'i', 0, G_OPTION_ARG_STRING, &_omvs_net_dev,
    "Network device interface", "dev" },
  { "jobs", 'j', 0, G_OPTION_ARG_INT, &_omvs_jobs,
    "Number of jobs", "jobs" },
  { "output", 'o', 0, G_OPTION_ARG_FILENAME, &_omvs_output,
    "Output filename", "filename" },
  { "sleep", 's', 0, G_OPTION_ARG_INT, &_omvs_sleep,
    "Sleep time(milliseconds) between scans", "ms" },
  { "timeout", 't', 0, G_OPTION_ARG_INT, &_omvs_timeout,
    "Timeout time(milliseconds) in each scan", "ms" },
  { NULL }
};

typedef struct _OMVSPort {
  gint port;
  gint type;
} OMVSPort;

typedef struct _OMVSIPAddr {
  guint32 addr;
  OMVSPort *ports;
  gint num_ports;
} OMVSIPAddr;

typedef struct _OMVSScanner {
  OMVSIPAddr *ipaddrs;
  gint num_ipaddrs;
  gint scan_ipaddr_idx;
  gint scan_port_idx;
} OMVSScanner;

int main(int argc, char *argv[]) {
  GError *error = NULL;
  GOptionContext *context;
  int ret = 0;

  context = g_option_context_new("<multicast ip address or net ... [#N]>");
  g_option_context_set_summary(context,
    "omvs scans to find free video streaming multicast ip addresses."
  );
  g_option_context_set_description(context,
    "Oh! Multicast Video Scanner " OMVS_VERSION " is"
      " Written by Taeho Oh <ohhara@postech.edu>.\n"
    "http://ohhara.sarang.net");
  g_option_context_add_main_entries(context, _omvs_entries, NULL);
  g_option_context_add_group(context, gst_init_get_option_group());
  if (!g_option_context_parse(context, &argc, &argv, &error)) {
    g_print("option parsing failed: %s\n", error->message);
    ret = -1;
    goto finish_return;
  }

  if (argc < 2) {
    gchar *help_msg;
    help_msg = g_option_context_get_help(context, TRUE, NULL);
    g_print("%s", help_msg);
    g_free(help_msg);
    ret = -2;
    goto finish_return;
  }

finish_return:
  g_option_context_free(context);

  return ret;
}