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#! /usr/bin/perl
# **** License ****
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# 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.
#
# This code was originally developed by Vyatta, Inc.
# Portions created by Vyatta are Copyright (C) 2010 Vyatta, Inc.
# All Rights Reserved.
#
# Author: Stephen Hemminger
# Date: February 2010
#
# **** End License ****
use lib "/opt/vyatta/share/perl5/";
use strict;
use warnings;
use Vyatta::Config;
use IO::Prompt;
my $sbindir = $ENV{vyatta_sbindir};
sub check_http {
my ($url) = @_;
#
# error codes are send back in html, so 1st try a header
# and look for "HTTP/1.1 200 OK"
#
my $rc = `curl -s -q -I $url 2>&1`;
if ( $rc =~ /HTTP\/\d+\.?\d\s+(\d+)\s+(.*)$/mi ) {
my $rc_code = $1;
my $rc_string = $2;
die "http error: [$rc_code] $rc_string\n"
unless ( $rc_code == 200 );
} else {
die "Error: $rc\n";
}
}
sub geturl {
my $url = shift;
# Is it a local file?
unless ($url =~ m#(^[^/]\w+)://# ) {
open(my $in, '<', $url)
or die "Cannot open file $url: $!\n";
return $in;
}
my $proto = $1;
check_http($url)
if ($proto eq 'http');
my $cmd = "curl --insecure -#";
# Handle user@host syntax which curl doesn't do
if ($proto eq 'scp') {
if ($url =~ m#scp://(\w+)@(.*)# ) {
$cmd .= " -u $1";
$url = "scp://$2";
}
}
$cmd .= " $url";
my $curl_out = `$cmd`;
my $rc = ($? >> 8);
if ($proto eq 'scp' && $rc == 51){
$url =~ m/scp:\/\/(.*?)\//;
my $host = $1;
if ($host =~ m/.*@(.*)/) {
$host = $1;
}
my $rsa_key = `ssh-keyscan -t rsa $host 2>/dev/null`;
print "The authenticity of host '$host' can't be established.\n";
my $fingerprint = `ssh-keygen -lf /dev/stdin <<< \"$rsa_key\" | awk {' print \$2 '}`;
chomp $fingerprint;
print "RSA key fingerprint is $fingerprint.\n";
if (prompt("Are you sure you want to continue connecting (yes/no) [Yes]? ", -tynd=>"y")) {
mkdir "~/.ssh/";
open(my $known_hosts, ">>", "$ENV{HOME}/.ssh/known_hosts")
or die "Cannot open known_hosts: $!";
print $known_hosts "$rsa_key\n";
close($known_hosts);
$curl_out = `curl -# $url`;
print "\n";
}
}
open (my $curl, "<", \$curl_out)
or die "$cmd command failed: $!";
return $curl;
}
sub validate_keytype {
my ($keytype) = @_;
if ($keytype eq 'ssh-rsa' || $keytype eq 'ssh-dss' || $keytype eq 'ecdsa-sha2-nistp256' || $keytype eq 'ecdsa-sha2-nistp384' || $keytype eq 'ecdsa-sha2-nistp521' || $keytype eq 'ssh-ed25519') {
return 1;
}
return 0;
}
sub getkeys {
my ($user, $in) = @_;
print "\n";
while (<$in>) {
chomp;
next if /^#/; # ignore comments
# public key (format 2) consist of:
# [options] keytype base64-encoded key comment
my @fields = split / /;
my $options;
$options = shift @fields
if (validate_keytype $fields[1]);
my $keytype;
$keytype = shift @fields;
my $keycode;
$keycode = shift @fields;
my $comment;
$comment = join(' ', @fields);
die "Unknown key type $keytype : must be one of ssh-rsa, ssh-dss, ecdsa-sha2-nistp* or ssh-ed25519\n"
unless validate_keytype $keytype;
my $cmd
= "set system login user $user authentication public-keys $comment";
if ($options) {
system ("$sbindir/my_$cmd" . " options $options");
die "\"$cmd\" at "
if ($? >> 8);
}
system ("$sbindir/my_$cmd" . " type $keytype");
die "\"$cmd\" at "
if ($? >> 8);
system ("$sbindir/my_$cmd" . " key $keycode");
die "\"$cmd\" at "
if ($? >> 8);
}
}
die "Incorrect number of arguments, expect\n",
" loadkey user filename|url\n"
unless ($#ARGV == 1);
my $user = $ARGV[0];
my $source = $ARGV[1];
my $config = new Vyatta::Config;
$config->setLevel("system login user");
die "User $user does not exist in current configuration\n"
unless $config->exists($user);
getkeys($user, geturl($source));
system("$sbindir/my_commit");
if ( $? >> 8 ) {
print "Load failed (commit failed)\n";
exit 1;
}
print "Done\n";
exit 0;
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