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#!/usr/bin/perl
# SPDX-License-Identifier: GPL-2.0-or-later
##
## Scan a file of route-type definitions (see eg route_types.txt) and
## generate a corresponding header file with:
##
## - enum of Zserv route-types
## - redistribute strings for the various Quagga daemons
##
## See route_types.txt for the format.
##
##
## Copyright (C) 2009 David Lamparter.
##
use strict;
use Getopt::Long;
# input processing
#
my @protos;
my %protodetail;
my %daemons;
my @enabled;
GetOptions ("enabled=s" => \@enabled);
@enabled = split(/,/,join(',',@enabled));
while (<STDIN>) {
# skip comments and empty lines
next if (/^\s*(#|$)/);
# strip whitespace
chomp;
$_ =~ s/^\s*//;
$_ =~ s/\s*$//;
# match help strings
if (/^(ZEBRA_ROUTE_[^\s]+)\s*,\s*"(.*)"$/) {
$protodetail{$1}->{'longhelp'} = $2;
next;
}
$_ =~ s/\s*,\s*/,/g;
# else: 8-field line
my @f = split(/,/, $_);
unless (@f == 9 || @f == 10) {
die "invalid input on route_types line $.\n";
}
my $proto = $f[0];
$f[3] = $1 if ($f[3] =~ /^'(.*)'$/);
$f[7] = $1 if ($f[7] =~ /^"(.*)"$/);
$protodetail{$proto} = {
"number" => scalar @protos,
"type" => $f[0],
"cname" => $f[1],
"daemon" => $f[2],
"char" => $f[3],
"ipv4" => int($f[4]),
"ipv6" => int($f[5]),
"redist" => int($f[6]),
"shorthelp" => $f[7],
"enabled" => $f[8],
"restrict2" => $f[9],
};
push @protos, $proto;
$daemons{$f[2]} = {
"ipv4" => int($f[4]),
"ipv6" => int($f[5])
} unless ($f[2] eq "NULL");
}
# output
printf <<EOF, $ARGV[0];
/* Auto-generated from route_types.txt by %s. */
/* Do not edit! */
#ifndef _FRR_ROUTE_TYPES_H
#define _FRR_ROUTE_TYPES_H
/* Zebra route's' types. */
EOF
push @protos, "ZEBRA_ROUTE_MAX";
my (@protosv4, @protosv6) = ((), ());
for (my $c = 0; $c < @protos; $c++) {
my $p = $protos[$c];
printf "#define %-32s %d\n", $p, $c;
push @protosv4, $p if ($protodetail{$p}->{"ipv4"});
push @protosv6, $p if ($protodetail{$p}->{"ipv6"});
}
pop @protos;
printf "#define %-32s %d\n", "ZEBRA_ROUTE_ERROR", 255;
sub codelist {
my (@protos) = @_;
my (@lines) = ();
my $str = " \"Codes: ";
for my $p (@protos) {
next unless (grep $_ eq $protodetail{$p}->{"enabled"}, @enabled);
my $s = sprintf("%s - %s, ",
$protodetail{$p}->{"char"},
$protodetail{$p}->{"shorthelp"});
if (length($str . $s) > 70) {
$str =~ s/ $//;
push @lines, $str . "\\n\" \\\n";
$str = " \" ";
}
$str .= $s;
}
$str =~ s/ $//;
push @lines, $str . "\\n\" \\\n";
push @lines, " \" > - selected route, * - FIB route, q - queued, r - rejected, b - backup\\n\"";
push @lines, " \" t - trapped, o - offload failure\\n\\n\"";
return join("", @lines);
}
print "\n";
printf "#define SHOW_ROUTE_V4_HEADER \\\n%s\n", codelist(@protosv4);
printf "#define SHOW_ROUTE_V6_HEADER \\\n%s\n", codelist(@protosv6);
print "\n";
sub collect {
my ($daemon, $ipv4, $ipv6, $any, $ip_prot) = @_;
my (@names, @help) = ((), ());
for my $p (@protos) {
next if ($ip_prot == 1 && $daemon eq "zebra" && $protodetail{$p}->{"cname"} eq "kernel");
next if ($ip_prot == 1 && $daemon eq "zebra" && $protodetail{$p}->{"cname"} eq "connected");
next if ($ip_prot == 1 && $daemon eq "zebra" && $protodetail{$p}->{"cname"} eq "local");
next if ($protodetail{$p}->{"daemon"} eq $daemon && $daemon ne "zebra");
next if ($protodetail{$p}->{"restrict2"} ne "" &&
$protodetail{$p}->{"restrict2"} ne $daemon);
next if ($protodetail{$p}->{"redist"} eq 0);
next unless (grep $_ eq $protodetail{$p}->{"enabled"}, @enabled);
next unless (($ipv4 && $protodetail{$p}->{"ipv4"})
|| ($ipv6 && $protodetail{$p}->{"ipv6"}));
push @names, $protodetail{$p}->{"cname"};
push @help, " \"".$protodetail{$p}->{"longhelp"}."\\n\"";
}
if ($any == 1) {
push @names, "any";
push @help, " \"Any of the above protocols\\n\"";
}
return ("\"<" . join("|", @names) . ">\"", join(" \\\n", @help));
}
for my $daemon (sort keys %daemons) {
next unless ($daemons{$daemon}->{"ipv4"} || $daemons{$daemon}->{"ipv6"});
printf "/* %s */\n", $daemon;
if ($daemons{$daemon}->{"ipv4"} && $daemons{$daemon}->{"ipv6"}) {
my ($names, $help) = collect($daemon, 1, 1, 0, 0);
printf "#define FRR_REDIST_STR_%s \\\n %s\n", uc $daemon, $names;
printf "#define FRR_REDIST_HELP_STR_%s \\\n%s\n", uc $daemon, $help;
($names, $help) = collect($daemon, 1, 0, 0, 0);
printf "#define FRR_IP_REDIST_STR_%s \\\n %s\n", uc $daemon, $names;
printf "#define FRR_IP_REDIST_HELP_STR_%s \\\n%s\n", uc $daemon, $help;
($names, $help) = collect($daemon, 0, 1, 0, 0);
printf "#define FRR_IP6_REDIST_STR_%s \\\n %s\n", uc $daemon, $names;
printf "#define FRR_IP6_REDIST_HELP_STR_%s \\\n%s\n", uc $daemon, $help;
if ($daemon eq "zebra") {
($names, $help) = collect($daemon, 1, 0, 1, 1);
printf "#define FRR_IP_PROTOCOL_MAP_STR_%s \\\n %s\n", uc $daemon, $names;
printf "#define FRR_IP_PROTOCOL_MAP_HELP_STR_%s \\\n%s\n", uc $daemon, $help;
($names, $help) = collect($daemon, 0, 1, 1, 1);
printf "#define FRR_IP6_PROTOCOL_MAP_STR_%s \\\n %s\n", uc $daemon, $names;
printf "#define FRR_IP6_PROTOCOL_MAP_HELP_STR_%s \\\n%s\n", uc $daemon, $help;
}
} else {
my ($names, $help) = collect($daemon,
$daemons{$daemon}->{"ipv4"}, $daemons{$daemon}->{"ipv6"}, 0);
printf "#define FRR_REDIST_STR_%s \\\n %s\n", uc $daemon, $names;
printf "#define FRR_REDIST_HELP_STR_%s \\\n%s\n", uc $daemon, $help;
}
print "\n";
}
print <<EOF;
#ifdef FRR_DEFINE_DESC_TABLE
struct zebra_desc_table
{
unsigned int type;
const char *string;
char chr;
};
#define DESC_ENTRY(T,S,C) [(T)] = { (T), (S), (C) }
static const struct zebra_desc_table route_types[] = {
EOF
for (my $c = 0; $c < @protos; $c++) {
my $p = $protos[$c];
printf " DESC_ENTRY\t(%s\t \"%s\",\t'%s' ),\n",
$p.",", $protodetail{$p}->{"cname"}, $protodetail{$p}->{"char"};
}
print <<EOF;
};
#undef DESC_ENTRY
#endif /* FRR_DEFINE_DESC_TABLE */
#endif /* _FRR_ROUTE_TYPES_H */
EOF
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