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/*
* This file is a part of plotnetcfg, a tool to visualize network config.
* Copyright (C) 2015 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 <arpa/inet.h>
#include <jansson.h>
#include <stdio.h>
#include <time.h>
#include "../frontend.h"
#include "../if.h"
#include "../label.h"
#include "../netns.h"
#include "../utils.h"
#include "../version.h"
#include "json.h"
static json_t *label_to_array(struct label *entry)
{
json_t *arr;
arr = json_array();
while (entry) {
json_array_append_new(arr, json_string(entry->text));
entry = entry->next;
}
return arr;
}
static json_t *address_to_obj(struct addr *addr)
{
json_t *obj;
char *s;
obj = json_object();
switch (addr->family) {
case AF_INET:
s = "INET";
break;
case AF_INET6:
s = "INET6";
break;
default:
/* should not happen */
s = "unknown";
}
json_object_set_new(obj, "family", json_string(s));
json_object_set_new(obj, "address", json_string(addr->formatted));
return obj;
}
static json_t *addresses_to_array(struct if_addr_entry *entry)
{
json_t *arr, *addr;
arr = json_array();
while (entry) {
addr = address_to_obj(&entry->addr);
if (entry->peer.formatted)
json_object_set_new(addr, "peer", address_to_obj(&entry->peer));
json_array_append_new(arr, addr);
entry = entry->next;
}
return arr;
}
static json_t *connection(struct if_entry *target, char *edge_label)
{
json_t *obj, *arr;
obj = json_object();
json_object_set_new(obj, "target", json_string(ifid(target)));
arr = json_array();
if (edge_label)
json_array_append_new(arr, json_string(edge_label));
json_object_set_new(obj, "info", arr);
return obj;
}
static json_t *interfaces_to_array(struct if_entry *entry)
{
struct if_list_entry *iflist;
json_t *ifarr, *ifobj, *children;
char *s;
ifarr = json_array();
while (entry) {
ifobj = json_object();
json_object_set_new(ifobj, "id", json_string(ifid(entry)));
json_object_set_new(ifobj, "name", json_string(entry->if_name));
json_object_set_new(ifobj, "driver", json_string(entry->driver ? entry->driver : ""));
json_object_set_new(ifobj, "info", label_to_array(entry->label));
json_object_set_new(ifobj, "addresses", addresses_to_array(entry->addr));
json_object_set_new(ifobj, "mtu", json_integer(entry->mtu));
json_object_set_new(ifobj, "type", json_string(entry->flags & IF_INTERNAL ?
"internal" :
"device"));
if (entry->flags & IF_INTERNAL)
s = "none";
else if (!(entry->flags & IF_UP))
s = "down";
else if (!(entry->flags & IF_HAS_LINK))
s = "up_no_link";
else
s = "up";
json_object_set_new(ifobj, "state", json_string(s));
if (entry->warnings)
json_object_set_new(ifobj, "warning", json_true());
if (entry->master)
json_object_set_new(ifobj, "parent",
connection(entry->master,
entry->link ? NULL : entry->edge_label));
else if (entry->rev_link)
json_object_set_new(ifobj, "parent",
connection(entry->rev_link, entry->rev_link->edge_label));
children = json_array();
if (entry->link)
json_array_append_new(children, connection(entry->link, entry->edge_label));
if (entry->rev_master) {
for (iflist = entry->rev_master; iflist; iflist = iflist->next)
json_array_append_new(children,
connection(iflist->entry,
iflist->entry->link ? NULL :
iflist->entry->edge_label));
}
if (json_array_size(children))
json_object_set(ifobj, "children", children);
json_decref(children);
if (entry->peer)
json_object_set(ifobj, "peer", connection(entry->peer, NULL));
json_array_append_new(ifarr, ifobj);
entry = entry->next;
}
return ifarr;
}
static void json_output(struct netns_entry *root)
{
struct netns_entry *entry;
json_t *output, *ns_list, *ns;
time_t cur;
time(&cur);
output = json_object();
json_object_set_new(output, "format", json_integer(1));
json_object_set_new(output, "version", json_string(VERSION));
json_object_set_new(output, "date", json_string(ctime(&cur)));
ns_list = json_array();
for (entry = root; entry; entry = entry->next) {
ns = json_object();
json_object_set_new(ns, "name", json_string(entry->name ? entry->name : ""));
json_object_set_new(ns, "interfaces", interfaces_to_array(entry->ifaces));
if (entry->warnings)
json_object_set_new(ns, "warnings", label_to_array(entry->warnings));
json_array_append_new(ns_list, ns);
}
json_object_set_new(output, "namespaces", ns_list);
json_dumpf(output, stdout, 0);
json_decref(output);
}
static struct frontend fe_json = {
.format = "json",
.desc = "JSON, see plotnetcfg-json(5)",
.output = json_output,
};
void frontend_json_register(void)
{
frontend_register(&fe_json);
}
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