<?php
/*****************************************************************************
IP Reg, a PHP/MySQL IPAM tool
Copyright (C) 2007-2009 Wietse Warendorff (up to v0.5)
Copyright (C) 2011-2023 Thomas Hooge

SPDX-License-Identifier: GPL-3.0-or-later
*****************************************************************************/

include("includes.php");

$subnet_id = sanitize($_GET['subnet_id']);

if(isset($_GET['page'])) {
    $page = sanitize($_GET['page']);
}

$smarty->assign("scripts",'changetext.js');
include("header.php");

// subnet
$sql = "SELECT
            s.subnet_id AS id, 
            s.subnet_address AS address,
            s.subnet_mask AS mask,
            s.subnet_dhcp_start AS dhcp_start,
            s.subnet_dhcp_end AS dhcp_end,
            s.subnet_info AS info,
            s.protocol_version AS proto_vers,
            s.ntp_server,
            COUNT(node.subnet_id) AS node_counter
        FROM
            subnet AS s LEFT JOIN node USING (subnet_id)
        WHERE
            s.subnet_id=?
        GROUP BY
            s.subnet_id";
$sth = $dbh->prepare($sql);
$sth->execute([$subnet_id]);

$subnet = $sth->fetch(PDO::FETCH_OBJ);

$smarty->assign("subnet", $subnet);

// set counters
$host_counter = pow(2, (32-$subnet->mask));
$node_counter = $subnet->node_counter;
$subnet_usedpercentage = round((($node_counter/($host_counter-2))*100), 1);

$smarty->assign("node_counter", $node_counter);
$smarty->assign("subnet_usedpercentage", $subnet_usedpercentage);
$smarty->assign("config_color_unused", $config_color_unused);
$smarty->assign("host_counter", $host_counter-2);
$smarty->assign("free_counter", (($host_counter-2)-$node_counter));

// subnet

// split up the range
$iprange = explode('.', $subnet->address);
$iprange1 = $iprange[0];
$iprange2 = $iprange[1];
$iprange3 = $iprange[2];
$iprange4 = $iprange[3];

// create empty subnet-array
$subnetdata = array();

// determine range (Class A/B/C)
if ($subnet->mask >= 24) {
    // Class C
    // fill subnet-array with addresses we want to see
    for($i=0; $i<$host_counter; $i++) {
        // build ip
        $ip = $iprange1 . '.' . $iprange2 . '.' . $iprange3 . '.' . ($iprange4+$i);

        // fill subnet-array
        $subnetdata[$ip] = array();
    }

    // calculate broadcast address
    $broadcast_address = $iprange1 . '.' . $iprange2 . '.' . $iprange3 .  '.' . ($iprange4+$i-1);

    // to tpl
    $smarty->assign("iprange1", $iprange1);
    $smarty->assign("iprange2", $iprange2);
    $smarty->assign("iprange3", $iprange3);
    $smarty->assign("iprange4", $iprange4);
    $smarty->assign("subnetmask1", 255);
    $smarty->assign("subnetmask2", 255);
    $smarty->assign("subnetmask3", 255);
    $smarty->assign("subnetmask4", 256-$host_counter);

    // no pagination needed
    $smarty->assign("noselect", TRUE);
    $smarty->assign("one_select", FALSE);
    $smarty->assign("two_select", FALSE);

    // set displayed nodes
    $nodes_displayed = $host_counter;

} else if ($subnet->mask >= 16) {
    // Class B
    // which part do we want to see?
    if ((empty($page)) ? $page = $subnet->address : $page = $page);
    $page = explode('.', $page);
    $page2 = $page[2];

    // fill subnet-array with addresses we want to see
    for($i=0; $i<256; $i++) {
        // build ip
        $ip = $iprange1 . '.' . $iprange2 . '.' . $page2 .  '.' . $i;

        // fill subnet-array
        $subnetdata[$ip] = array();
    }

    // calculate broadcast address
    $broadcast_address = $iprange1 . '.' . $iprange2 . '.' . ($iprange3+$i-1) .  '.255';

    // to tpl
    $smarty->assign("iprange1", $iprange1);
    $smarty->assign("iprange2", $iprange2);

    // loop addresses in range3
    for ($i=$iprange3; $i<(pow(2,(32-$subnet->mask))/256); $i++) {
        // send to tpl
        $smarty->assign("iprange3", $i);
        $smarty->assign("iprange4", 0);

        // set select box
        if ($i == $page2) {
            $smarty->assign("row_selected", "selected");

        } else {
            $smarty->assign("row_selected", "");
        }

    }

    $smarty->assign("subnetmask1", 255);
    $smarty->assign("subnetmask2", 255);
    $smarty->assign("subnetmask3", 256-($host_counter/256));
    $smarty->assign("subnetmask4", 0);

    // one select box
    $smarty->assign("noselect", FALSE);
    $smarty->assign("one_select", TRUE);
    $smarty->assign("two_select", FALSE);

    // set displayed nodes
    $nodes_displayed = 256;
} else {
    // Class A
    // which part do we want to see?
    if ((empty($page)) ? $page = $subnet->address : $page = $page);
    $page = explode('.', $page);
    $page2 = $page[1];
    $page3 = $page[2];

    // fill subnet-array with addresses we want to see
    for($i=0; $i<256; $i++) {
        // build ip
        $ip = $iprange1 . '.' . $page2 . '.' . $page3 .  '.' . $i;

        // fill subnet-array
        $subnetdata[$ip] = array();
    }

    // calculate broadcast address
    $broadcast_address = $iprange1 . '.' . ($iprange2+$i-1) . '.255.255';

    // to tpl
    $smarty->assign("iprange1", $iprange1);
    $smarty->assign("iprange2", $iprange2);

    // loop addresses in range 2
    for ($i=$iprange2; $i<(pow(2,(24-$subnet->mask))/256); $i++) {
        // send to tpl
        $smarty->assign("iprange1", $iprange1);
        $smarty->assign("iprange2", $i);
        $smarty->assign("iprange3", $page3);
        $smarty->assign("iprange4", $iprange4);

        // set select box
        if($i == $page2) {
            $smarty->assign("row1_selected", "selected");

        } else {
            $smarty->assign("row1_selected", "");
        }

    }

    // loop addresses in range 3
    for ($i=0; $i<256; $i++) {
        // send to tpl
        $smarty->assign("iprange1", $iprange1);
        $smarty->assign("iprange2", $page2);
        $smarty->assign("iprange3", $i);
        $smarty->assign("iprange4", $iprange4);

        // set select box
        if($i==$page3) {
            $smarty->assign("row2_selected", "selected");

        } else {
            $smarty->assign("row2_selected", "");
        }

    }

    $smarty->assign("subnetmask1", 255);
    $smarty->assign("subnetmask2", 256-($host_counter/65536));
    $smarty->assign("subnetmask3", 0);
    $smarty->assign("subnetmask4", 0);

    // one select box
    $smarty->assign("noselect", FALSE);
    $smarty->assign("one_select", FALSE);
    $smarty->assign("two_select", TRUE);

    // set displayed nodes
    $nodes_displayed = 256;
}

// get nodes for this subnetview and implement the values into the array
$sql = "SELECT a.asset_name, g.assetclassgroup_color, n.node_id, n.node_ip
        FROM
            asset AS a,
            assetclass AS c,
            assetclassgroup AS g,
            node AS n
    WHERE
        n.node_ip IN ('".implode("','",array_keys($subnetdata))."')
        AND n.subnet_id=?
        AND a.asset_id=n.asset_id
        AND c.assetclass_id=a.assetclass_id
        AND g.assetclassgroup_id=c.assetclassgroup_id";

$sth = $dbh->prepare($sql);
$sth->execute([$subnet_id]);

$nodes = $sth->fetchAll();
$smarty->assign("nodes", $nodes);

if (count($nodes) > 0) {
    foreach ($nodes AS $node) {
        $subnetdata[$node['node_ip']] = $node;
    }
}

// replace ip's in subnet-array (if necessary)
// check for subnet address
if (array_key_exists($subnet->address, $subnet)) {
    // replace
    $subnetdata[$subnet->address] = array("subnet_address");
}

// check for broadcast address
if (array_key_exists($broadcast_address, $subnet)) {
    // replace
    $subnetdata[$broadcast_address] = array("broadcast_address");
}

$dhcpstart = 0;
if ($subnet->dhcp_start && $subnet->dhcp_end) {
    $dhcpstart = ip2long($subnet->dhcp_start);
    $dhcpend = ip2long($subnet->dhcp_end);
}

        // loop subnet-array and send to template
            // start counter
//            $i=1;
            // loop subnet-array
foreach ($subnetdata AS $node_ip => $node) {

// make new line?
//   if(($i%$_SESSION['suser_imagecount']==0 && $i!=$nodes_displayed) ? $tr="</tr><tr>" : $tr="");

    // check if node-ip in DHCP-area
    $subnetdata[$node_ip]["dynamic"] = false;
    if ($dhcpstart > 0) {
        $ipval = ip2long($node_ip);
        if (($ipval >= $dhcpstart) and ($ipval <= $dhcpend)) {
            $subnetdata[$node_ip]["dynamic"] = true;
        }
    }

    // check node
    if (empty($node)) {
        // empty node to tpl
        $subnetdata[$node_ip]["url"] = 'assigniptonode.php?subnet_id=' . $subnet_id . '&amp;node_ip='. $node_ip;
        $subnetdata[$node_ip]["remotetext"] = $node_ip;
        if ($subnetdata[$node_ip]["dynamic"]) {
            $subnetdata[$node_ip]["assetclassgroup_color"] = $config_color_dynamic;
        } else {
            $subnetdata[$node_ip]["assetclassgroup_color"] = $config_color_unused;
        }
    } else if (array_key_exists(0, $node) && $node[0]=="subnet_address") {
       // subnet address to tpl
        $subnetdata[$node_ip]["url"] = "";
        $subnetdata[$node_ip]["remotetext"] = $node_ip . '&nbsp;' . $lang['lang_subnet_subnetaddress'];
        $subnetdata[$node_ip]["assetclassgroup_color"] = $config_color_blocked;
    } else if (array_key_exists(0, $node) && $node[0]=="broadcast_address") {
        // broadcast address to tpl
        $subnetdata[$node_ip]["url"] = "";
        $subnetdata[$node_ip]["remotetext"] = $node_ip . '&nbsp;' . $lang['lang_subnet_broadcastaddress'];
        $subnetdata[$node_ip]["assetclassgroup_color"] = $config_color_blocked;
    } else {
        // node to tpl
        $subnetdata[$node_ip]["url"] = 'nodeview.php?node_id=' . $node['node_id'];
        $subnetdata[$node_ip]["remotetext"] = $node_ip . '&nbsp;' . $node['asset_name'];
        $subnetdata[$node_ip]["assetclassgroup_color"] = $node['assetclassgroup_color'];
    }

    // update counter
    //   $i++;

} // foreach

$smarty->assign("subnetdata", $subnetdata);
$smarty->assign("imagewrap", $_SESSION['suser_imagecount']);

// vlans
$sql = "SELECT v.vlan_id AS id, v.vlan_name AS name,
              v.vlan_number AS number
        FROM subnetvlan AS s JOIN vlan AS v USING (vlan_id)
        WHERE s.subnet_id=?
        ORDER BY v.vlan_name";
$sth = $dbh->prepare($sql);
$sth->execute([$subnet_id]);
$smarty->assign("vlans", $sth->fetchAll());

// locations
$sql = "SELECT l.location_id, l.location_name
        FROM location AS l LEFT JOIN subnetlocation AS s USING (location_id)
        WHERE s.subnet_id=?
        ORDER BY l.location_name";
$sth = $dbh->prepare($sql);
$sth->execute([$subnet_id]);
$smarty->assign("locations", $sth->fetchAll());

// assetclassgroups
$sql = "SELECT
        assetclassgroup_id AS id,
        assetclassgroup_name AS name,
        assetclassgroup_color  AS color,
        COUNT(assetclass_id) AS counter
    FROM subnet
        LEFT JOIN node USING (subnet_id)
        LEFT JOIN asset USING (asset_id)
        LEFT JOIN assetclass USING (assetclass_id)
        LEFT JOIN assetclassgroup USING (assetclassgroup_id)
    WHERE subnet_id=?
    GROUP BY assetclass_id
    ORDER BY counter DESC";
$sth = $dbh->prepare($sql);
$sth->execute([$subnet_id]);
$smarty->assign("assetclassgroups", $sth->fetchAll());

$smarty->display("subnetview.tpl");

include("footer.php");
?>