mirror of
https://github.com/webmin/webmin.git
synced 2025-08-17 19:06:28 +00:00
393 lines
9.0 KiB
Perl
Executable File
393 lines
9.0 KiB
Perl
Executable File
# mon-lib.pl
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# Common functions for mon
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BEGIN { push(@INC, ".."); };
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use WebminCore;
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&init_config();
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$mon_config_file = "$config{'cfbasedir'}/mon.cf";
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$under = { '' => [ 'authtype', 'hostgroup', 'watch', 'use', 'period',
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'serverbind', 'trapbind' ],
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'watch' => [ 'service' ],
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'service' => [ 'description', 'interval', 'monitor', 'period',
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'depend', 'allow_empty_group', 'traptimeout',
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'trapduration', 'randskew', 'dep_behavior',
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'dep_behaviour', 'exclude_hosts', 'exclude_period',
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'failure_interval', 'redistribute' ],
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'period' => [ 'alert', 'upalert', 'alertevery', 'alertafter',
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'numalerts', 'comp_alerts', 'startupalert',
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'upalertafter', 'no_comp_alerts' ]
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};
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# get_mon_config()
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# Parses the mon config file into a heirachical structure
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sub get_mon_config
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{
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if (@get_mon_config_cache) {
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return \@get_mon_config_cache;
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}
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local @rv;
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local $cv = \@rv;
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local ($last_indent, $parent);
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local $lnum = 0;
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open(CONF, $mon_config_file);
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while(<CONF>) {
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local $slnum = $lnum;
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s/\s+$//;
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s/#.*$//g;
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while(s/\\$//) {
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local $nl = <CONF>;
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$nl =~ s/\s+$//;
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$nl =~ s/^\s+//;
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$_ .= $nl;
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$lnum++;
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}
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if (/^(\S+)\s*=\s*(.*)$/) {
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# Global directive
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local $str = { 'name' => $1,
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'values' => [ split(/\s+/, $2) ],
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'value' => $2,
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'global' => 1,
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'index' => scalar(@rv),
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'line' => $slnum,
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'eline' => $lnum };
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push(@rv, $str);
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}
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elsif (/^(\s*)(\S+)\s*(.*)$/) {
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# Normal directive, possibly in a heirachy
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local $str = { 'name' => $2,
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'values' => [ split(/\s+/, $3) ],
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'value' => $3,
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'members' => [ { 'dummy' => 1,
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'line' => $lnum,
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'eline' => $lnum } ],
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'indent' => $1,
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'line' => $slnum,
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'eline' => $lnum };
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# Check if under the previous directive
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local $found;
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if (@$cv > 0) {
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local $ld = $cv->[@$cv-1];
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local $pu = $under->{$ld->{'name'}};
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foreach $u (@$pu) {
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$found++ if ($u eq $str->{'name'});
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}
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if ($found) {
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# It is .. so just update the parent
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$parent = $ld;
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$cv = $ld ? $ld->{'members'} : \@rv;
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}
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}
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if (!$found) {
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# Check if under a parent
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local $pp = $parent;
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while(1) {
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local $pu = $under->{$pp ? $pp->{'name'} : ""};
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foreach $u (@$pu) {
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$found++ if ($u eq $str->{'name'});
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}
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if ($found) {
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# Under some ancestor .. make that
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# the current parent
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$parent = $pp;
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$cv = $pp ? $pp->{'members'} : \@rv;
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last;
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}
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else {
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last if (!$pp);
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$pp = $pp->{'parent'};
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}
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}
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if (!$found) {
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# Check if a hostname under a previous hostgroup
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if (@$cv &&
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$cv->[$#cv]->{'name'} eq 'hostgroup') {
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push(@{$cv->[$#cv]->{'values'}},
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$str->{'name'});
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$cv->[$#cv]->{'eline'} = $lnum;
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goto nextline;
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}
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}
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&error("Unknown directive $str->{'name'}")
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if (!$found);
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}
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$str->{'index'} = scalar(@$cv);
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$str->{'parent'} = $parent;
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push(@$cv, $str);
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# Set parent end lines
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local $pp = $parent;
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do {
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$pp->{'eline'} = $lnum;
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$pp = $pp->{'parent'};
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} while($pp);
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}
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nextline:
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$lnum++;
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}
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close(CONF);
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@get_mon_config_cache = @rv;
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return \@get_mon_config_cache;
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}
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# find_value(name, &config)
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sub find_value
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{
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foreach $c (@{$_[1]}) {
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if ($c->{'name'} eq $_[0]) {
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return wantarray ? @{$c->{'values'}} : $c->{'values'}->[0];
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}
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}
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return wantarray ? ( ) : undef;
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}
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# find(name, &config)
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sub find
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{
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local @rv;
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foreach $c (@{$_[1]}) {
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if ($c->{'name'} eq $_[0]) {
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push(@rv, $c);
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}
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}
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return wantarray ? @rv : $rv[0];
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}
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# save_directive(&config, [&old|undef], [&new|undef])
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sub save_directive
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{
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local $lref = &read_file_lines($mon_config_file);
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local @same = &find($_[2]->{'name'}, $_[0]) if ($_[2]);
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local $idx = &indexof($_[1], @{$_[0]}) if ($_[1]);
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local $olen = $_[1]->{'eline'} - $_[1]->{'line'} + 1 if ($_[1]);
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local $conf = &get_mon_config();
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local @dirs = &directive_lines($_[2], $_[2]->{'indent'}) if ($_[2]);
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if ($_[1] && $_[2]) {
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# Replace the old directive
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splice(@$lref, $_[1]->{'line'}, $_[1]->{'eline'} - $_[1]->{'line'} + 1,
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@dirs);
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$_[0]->[$idx] = $_[2];
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&renumber($conf, $_[1]->{'line'}, @dirs - $olen);
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$_[2]->{'line'} = $_[1]->{'line'};
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$_[2]->{'eline'} = $_[2]->{'line'} + @dirs - 1;
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}
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elsif ($_[1] && !$_[2]) {
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# Remove the old directive
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splice(@$lref, $_[1]->{'line'}, $_[1]->{'eline'} - $_[1]->{'line'} + 1);
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splice(@{$_[0]}, $idx, 1);
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&renumber($conf, $_[1]->{'line'}, -$olen);
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}
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elsif (@same) {
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# Add after last directive of same type
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splice(@$lref, $same[@same-1]->{'eline'}+1, 0, @dirs);
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splice(@{$_[0]}, $idx+1, 0, $_[2]);
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&renumber($conf, $same[@same-1]->{'eline'}+1, scalar(@dirs));
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$_[2]->{'line'} = $same[@same-1]->{'eline'}+1;
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$_[2]->{'eline'} = $_[2]->{'line'} + @dirs - 1;
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}
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else {
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# Add after last directive in config
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local $ld = $_[0]->[@{$_[0]}-1];
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splice(@$lref, $ld->{'eline'} + 1, 0, @dirs);
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push(@{$_[0]}, $_[2]);
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&renumber($conf, $ld->{'eline'} + 1, scalar(@dirs));
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$_[2]->{'line'} = $ld->{'eline'} + 1;
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$_[2]->{'eline'} = $ld->{'eline'} + @dirs - 1;
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}
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}
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# renumber(&config, position, offset)
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sub renumber
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{
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foreach $c (@{$_[0]}) {
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$c->{'line'} += $_[2] if ($c->{'line'} >= $_[1]);
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$c->{'eline'} += $_[2] if ($c->{'eline'} >= $_[1]);
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&renumber($c->{'members'}, $_[1], $_[2]);
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}
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}
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# directive_lines(&directive, [indent])
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sub directive_lines
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{
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local @rv;
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@rv = ( $_[1].join(" ", $_[0]->{'name'}, $_[0]->{'global'} ? ( "=" ) : ( ),
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@{$_[0]->{'values'}}) );
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foreach $m (@{$_[0]->{'members'}}) {
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push(@rv, &directive_lines($m, "$_[1] ")) if (!$m->{'dummy'});
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}
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return @rv;
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}
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# list_monitors()
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# Returns a list of all monitors
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sub list_monitors
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{
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local $conf = &get_mon_config();
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local $mondir = &find_value("mondir", $conf);
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local @rv;
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foreach my $dir (split(/:/, $mondir)) {
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opendir(DIR, $dir);
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foreach my $f (readdir(DIR)) {
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push(@rv, $f) if ($f =~ /\.monitor$/);
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}
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closedir(DIR);
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}
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return @rv;
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}
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# list_alerts()
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# Returns a list of all alerts
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sub list_alerts
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{
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local $conf = &get_mon_config();
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local $mondir = &find_value("alertdir", $conf);
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local @rv;
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foreach my $dir (split(/:/, $mondir)) {
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opendir(DIR, $dir);
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foreach $f (readdir(DIR)) {
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push(@rv, $f) if ($f =~ /\.alert$/ || $f =~ /^alert\./);
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}
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closedir(DIR);
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}
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return @rv;
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}
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# mon_users_file()
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# Returns the file in which MON users are stored
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sub mon_users_file
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{
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local $conf = &get_mon_config();
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local $uf = &find_value("userfile", $conf);
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$uf = "monusers.cf" if (!$uf);
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if ($uf =~ /^\//) {
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return $uf;
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}
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else {
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local $bd = &find_value("cfbasedir", $conf);
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$bd = $config{'cfbasedir'} if (!$bd);
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return "$bd/$uf";
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}
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}
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# list_users()
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sub list_users
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{
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local(@rv, $lnum = 0);
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open(USERS, &mon_users_file());
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while(<USERS>) {
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s/\r|\n//g;
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s/#.*//;
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if (/^([^:]+):(\S+)/) {
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push(@rv, { 'user' => $1, 'pass' => $2, 'line' => $lnum });
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}
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$lnum++;
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}
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close(USERS);
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return @rv;
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}
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# create_user(&user)
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sub create_user
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{
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local $lref = &read_file_lines(&mon_users_file());
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push(@$lref, $_[0]->{'user'}.":".$_[0]->{'pass'});
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&flush_file_lines(&mon_users_file());
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}
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# modify_user(&user)
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sub modify_user
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{
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local $lref = &read_file_lines(&mon_users_file());
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$lref->[$_[0]->{'line'}] = $_[0]->{'user'}.":".$_[0]->{'pass'};
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&flush_file_lines(&mon_users_file());
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}
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# delete_user(&user)
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sub delete_user
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{
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local $lref = &read_file_lines(&mon_users_file());
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splice(@$lref, $_[0]->{'line'}, 1);
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&flush_file_lines(&mon_users_file());
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}
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# mon_auth_file()
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sub mon_auth_file
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{
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local $conf = &get_mon_config();
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local $af = &find_value("authfile", $conf);
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$af = "auth.cf" if (!$af);
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if ($af =~ /^\//) {
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return $af;
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}
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else {
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local $bd = &find_value("cfbasedir", $conf);
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return "$bd/$af";
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}
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}
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sub list_auth_types
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{
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return ('list', 'servertime', 'reset', 'loadstate', 'savestate',
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'term', 'stop', 'start', 'set', 'get', 'dump', 'disable',
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'enable', 'test', 'ack', 'reload', 'clear');
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}
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# day_input(name, value)
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sub day_input
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{
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local @days = ( 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun' );
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local $rv = "<select name=$_[0]>\n";
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foreach $d (@days) {
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$rv .= sprintf "<option %s>%s</option>\n",
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lc($d) eq lc($_[1]) ? "selected" : "", $d;
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}
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$rv .= "</select>\n";
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return $rv;
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}
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# interval_input(name, value)
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sub interval_input
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{
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local ($int, $units, $rv);
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if ($_[1] =~ /^([\d\.]+)(\S)$/) {
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$int = $1; $units = $2;
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}
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$rv = "<input name=$_[0] size=6 value='$int'>\n";
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$rv .= "<select name=$_[0]_u>\n";
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foreach $u ('s', 'm', 'h', 'd') {
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$rv .= sprintf "<option value=%s %s>%s</option>\n",
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$u, $units eq $u ? "selected" : "", $text{"service_units_$u"};
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}
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$rv .= "</select>\n";
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return $rv;
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}
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# restart_mon()
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# Re-start the MON process, returning undef on success or an error message
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# on failure
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sub restart_mon
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{
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if ($config{'restart_cmd'}) {
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local $out =
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&backquote_logged("$config{'restart_cmd'} 2>&1 </dev/null");
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return "<tt>$out</tt>" if ($?);
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}
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else {
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local $pid = &check_pid_file($config{'pid_file'});
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if ($pid) {
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kill('HUP', $pid);
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return undef;
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}
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else {
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return $text{'restart_epid'};
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}
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}
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}
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1;
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