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/*
* This file is a part of plotnetcfg, a tool to visualize network config.
* Copyright (C) 2014 Red Hat, Inc. -- Jiri Benc <jbenc@redhat.com>
*
* This program 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
* of the License, or (at your option) any later version.
*
* This program 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.
*/
#include <stdio.h>
#include <sys/socket.h>
#include <time.h>
#include "../frontend.h"
#include "../handler.h"
#include "../if.h"
#include "../label.h"
#include "../netns.h"
#include "../utils.h"
#include "../version.h"
#include "dot.h"
static void output_label(struct label *list)
{
struct label *ptr;
for (ptr = list; ptr; ptr = ptr->next)
printf("\\n%s", ptr->text);
}
static void output_addresses(struct if_addr_entry *list)
{
struct if_addr_entry *ptr;
for (ptr = list; ptr; ptr = ptr->next) {
printf("\\n%s", ptr->addr.formatted);
if (ptr->peer.formatted)
printf(" peer %s", ptr->peer.formatted);
}
}
static void output_mtu(struct if_entry *ptr)
{
if (ptr->mtu && ptr->mtu != 1500 && !(ptr->flags & IF_LOOPBACK))
printf("\\nMTU %d", ptr->mtu);
}
static void output_ifaces_pass1(struct if_entry *list)
{
struct if_entry *ptr;
for (ptr = list; ptr; ptr = ptr->next) {
printf("\"%s\" [label=\"%s", ifid(ptr), ptr->if_name);
if (ptr->driver)
printf(" (%s)", ptr->driver);
output_label(ptr->label);
output_mtu(ptr);
output_addresses(ptr->addr);
printf("\"");
if (ptr->flags & IF_INTERNAL)
printf(",style=dotted");
else if (!(ptr->flags & IF_UP))
printf(",style=filled,fillcolor=\"grey\"");
else if (!(ptr->flags & IF_HAS_LINK))
printf(",style=filled,fillcolor=\"pink\"");
else
printf(",style=filled,fillcolor=\"darkolivegreen1\"");
if (ptr->warnings)
printf(",color=\"red\"");
printf("]\n");
}
}
static void output_ifaces_pass2(struct if_entry *list)
{
struct if_entry *ptr;
for (ptr = list; ptr; ptr = ptr->next) {
if (ptr->master) {
printf("\"%s\" -> ", ifid(ptr));
printf("\"%s\"", ifid(ptr->master));
if (ptr->edge_label && !ptr->link)
printf(" [label=\"%s\"]", ptr->edge_label);
printf("\n");
}
if (ptr->link) {
printf("\"%s\" -> ", ifid(ptr->link));
printf("\"%s\"", ifid(ptr));
if (ptr->edge_label)
printf(" [label=\"%s\"]", ptr->edge_label);
printf("\n");
}
if (ptr->peer &&
(((unsigned long)ptr > (unsigned long)ptr->peer) ||
!ptr->peer->peer)) {
printf("\"%s\" -> ", ifid(ptr));
printf("\"%s\" [dir=none%s]\n", ifid(ptr->peer),
ptr->flags & IF_PEER_WEAK ? ",style=dotted" : "");
}
}
}
static void output_warnings(struct netns_entry *root)
{
struct netns_entry *ns;
int was_label = 0;
for (ns = root; ns; ns = ns->next) {
if (ns->warnings) {
if (!was_label)
printf("label=\"");
was_label = 1;
output_label(ns->warnings);
}
}
if (was_label) {
printf("\"\n");
printf("fontcolor=\"red\"\n");
}
}
static void dot_output(struct netns_entry *root)
{
struct netns_entry *ns;
time_t cur;
time(&cur);
printf("// generated by plotnetcfg " VERSION " on %s", ctime(&cur));
printf("digraph {\nnode [shape=box]\n");
for (ns = root; ns; ns = ns->next) {
if (ns->name) {
printf("subgraph \"cluster_%s\" {\n", ns->name);
printf("label=\"%s\"\n", ns->name);
printf("fontcolor=\"black\"\n");
}
output_ifaces_pass1(ns->ifaces);
if (ns->name)
printf("}\n");
}
for (ns = root; ns; ns = ns->next) {
output_ifaces_pass2(ns->ifaces);
}
output_warnings(root);
printf("}\n");
}
static struct frontend fe_dot = {
.format = "dot",
.desc = "dot language (suitable for graphviz)",
.output = dot_output,
};
void frontend_dot_register(void)
{
frontend_register(&fe_dot);
}
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