[lcd4linux @ 2004-01-27 08:13:39 by reinelt]

ported PPP token to plugin_ppp

1 files changed, 133 insertions, 0 deletions

diff --git a/plugin_ppp.c b/plugin_ppp.c
new file mode 100644
index 0000000..4445dbc
--- /dev/null
+++ b/plugin_ppp.c
@@ -0,0 +1,133 @@
+/* $Id: plugin_ppp.c,v 1.1 2004/01/27 08:13:39 reinelt Exp $
+ *
+ * plugin for ppp throughput
+ *
+ * Copyright 2003 Michael Reinelt <reinelt@eunet.at>
+ * Copyright 2004 The LCD4Linux Team <lcd4linux-devel@users.sourceforge.net>
+ *
+ * This file is part of LCD4Linux.
+ *
+ * LCD4Linux is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2, or (at your option)
+ * any later version.
+ *
+ * LCD4Linux 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ *
+ *
+ * $Log: plugin_ppp.c,v $
+ * Revision 1.1  2004/01/27 08:13:39  reinelt
+ * ported PPP token to plugin_ppp
+ *
+ */
+
+/* 
+ * exported functions:
+ *
+ * int plugin_init_ppp (void)
+ *  adds ppp() function
+ *
+ */
+
+#include "config.h"
+
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <sys/ioctl.h>
+
+#ifdef HAVE_NET_IF_PPP_H
+#include <net/if_ppp.h>
+#else
+#warning if_ppp.h not found. PPP support deactivated.
+#endif
+
+#include "debug.h"
+#include "plugin.h"
+#include "hash.h"
+
+
+#ifdef HAVE_NET_IF_PPP_H
+
+static HASH PPP = { 0, };
+
+static int get_ppp_stats (void)
+{
+  int age;
+  int unit;
+  unsigned ibytes, obytes;
+  static int fd=-2;
+  struct ifpppstatsreq req;
+  char key[8];
+
+  // reread every 10 msec only
+  age=hash_age(&PPP, NULL, NULL);
+  if (age>0 && age<=10) return 0;
+  
+  // open socket only once
+  if (fd==-2) {
+    fd = socket(AF_INET, SOCK_DGRAM, 0);
+    if (fd==-1) {
+      error ("socket() failed: %s", strerror(errno));
+      return -1;
+    }
+  }
+  
+  for (unit=0; unit<8; unit++) {
+    debug ("query unit %d", unit);
+    memset (&req, 0, sizeof (req));
+    req.stats_ptr = (caddr_t) &req.stats;
+    snprintf (req.ifr__name, sizeof(req.ifr__name), "ppp%d", unit);
+    
+    if (ioctl(fd, SIOCGPPPSTATS, &req) == 0) {
+      ibytes=req.stats.p.ppp_ibytes;
+      obytes=req.stats.p.ppp_obytes;
+    } else {
+      debug ("ioctl() retuned 0");
+      ibytes=obytes=0;
+    }
+    // Fixme: hash_set_delta wants a string, we already have an integer
+    snprintf (key, sizeof(key), "Rx:%d", unit);
+    hash_set_delta (&PPP, key, ibytes);
+    snprintf (key, sizeof(key), "Tx:%d", unit);
+    hash_set_delta (&PPP, key, obytes);
+
+  }
+  return 0;
+}
+
+
+static void my_ppp (RESULT *result, RESULT *arg1, RESULT *arg2)
+{
+  double value;
+  
+  debug ("get stats...");
+  if (get_ppp_stats()<0) {
+    SetResult(&result, R_STRING, ""); 
+    return;
+  }
+  debug ("get stats done.");
+  
+  value=hash_get_delta(&PPP, R2S(arg1), R2N(arg2));
+  SetResult(&result, R_NUMBER, &value); 
+}
+
+#endif
+
+
+int plugin_init_ppp (void)
+{
+#ifdef HAVE_NET_IF_PPP_H
+  AddFunction ("ppp", 3, my_ppp);
+#endif
+  return 0;
+}
+