#!/usr/bin/perl

use SNMP;

use Getopt::Std;

%opts = ( M => ".",
	  D => "html");

getopts("M:D:WH:", \%opts) || die "usage: makehtml.pl -W [-M MIBDIR] [-D OUTDIR] files > index.html";

$SNMP::save_descriptions = 1;

$ENV{'MIBDIRS'} = $opts{'M'};
$ENV{'SNMPCONFPATH'} = 'bogus';

if (-f "rfclist") {
    open(I,"rfclist");
    while (<I>) {
	if (/^(\d+)\s+([-:\w]+)\s*$/) {
	    my $mib = $2;
	    my $rfc = $1;
	    my @mibs = split(/:/,$mib);
	    foreach my $i (@mibs) {
		$mibs{$i} = $rfc; 
	    }
	}
    }
    close(I);
}

if (-f "nodemap") {
    open(I,"nodemap");
    while (<I>) {
	if (/^([-\w]+)\s+(\S+)\s*$/) {
	    $nodemap{$1} = $2;
	}
    }
    close(I);
}

if ($opts{'W'}) {
  print '<p class="SectionTitle">
Net-SNMP Distributed MIBs
</p>

<p>The following are the MIB files distributed with Net-SNMP.  Note that because they are distributed with Net-SNMP does not mean the agent implements them all.  Another good place for finding other MIB definitions can be found <a href="http://www.mibdepot.com/">at the MIB depot</a>.</p>

<table border="2" bgcolor="#dddddd">
  <tr><th>MIB</th><th>RFC</th><th>Description</th></tr>
';
}

my %didit;

foreach my $mibf (@ARGV) {
    my $node;
    my $mib = $mibf;
    $mib =~ s/.txt//;

    next if ($didit{$mib});
    $didit{$mib} = 1;

    open(I, "$opts{M}/$mibf");
    while (<I>) {
	if (/(\w+)\s+MODULE-IDENTITY/) {
	    $node = $1;
	}
    }
    close(I);

    if (!$node) {
	print STDERR "Couldn't find starting node for $mib $node $_\n";
	next;
    }

    SNMP::loadModules($mib);

    $desc = $SNMP::MIB{$node}{'description'};

    # get a different tree than the module identity though.
    if (exists($nodemap{$mib})) {
	@nodelist = split(/,/,$nodemap{$mib});
    } else {
	@nodelist = $node;
    }

    # Change tabs to spaces
    $desc =~ s/\t/        /g;

    # Clean up formatting
    my ($s) = ($desc =~ /\n(\s+)/);
    $desc =~ s/^$s//gm;

    $desc =~ s/&/&amp;/g;
    $desc =~ s/</&lt;/g;
    $desc =~ s/>/&gt;/g;

    print "  <tr>\n";
    print "    <td>";
    for (my $i = 0; $i <= $#nodelist; $i++) {
	my $node = $nodelist[$i];
	if ($i != 0) {
	    print "        ";
	}
	print "<a href=\"$node.html\">$mib";
	if ($#nodelist > 0) {
	    print " ($node)";
	}
	print "</a><br />\n";
    }
    print "        <a href=\"$mib.txt\">[mib file]</a></td>\n";
    print "        <br><a href=\"$mib-conf.html\">[conformance summary]</a></td>\n";
    print "    <td><a href=\"http://www.ietf.org/rfc/rfc$mibs{$mib}.txt\">rfc$mibs{$mib}</a></td>\n" if ($mibs{$mib});
    print "    <td>&nbsp;</td>\n" if (!$mibs{$mib});
    print "    <td><pre>$desc</pre></td>\n";
    print "  </tr>\n";

    for (my $i = 0; $i <= $#nodelist; $i++) {
	my $node = $nodelist[$i];
	system("MIBS=$mib mib2c -c mib2c.genhtml.conf $node");
	system("mv $node.html $opts{D}");
    }
}

print "</table>\n";