X-Git-Url: https://git.proxmox.com/?p=pve-common.git;a=blobdiff_plain;f=src%2FPVE%2FCLIHandler.pm;h=2d7714556b70249a1cbc6e59bc3356a785bc6c5a;hp=e6fd415b3ef4fd237c03db93eb038e835e7d1bed;hb=8d3eb3ce17c60f128359e249e3ea9d114c792823;hpb=2a8ced7bacb7da8ab4143a59720e74a2897cf714

diff --git a/src/PVE/CLIHandler.pm b/src/PVE/CLIHandler.pm
index e6fd415..2d77145 100644
--- a/src/PVE/CLIHandler.pm
+++ b/src/PVE/CLIHandler.pm
@@ -2,65 +2,189 @@ package PVE::CLIHandler;
 
 use strict;
 use warnings;
-use Data::Dumper;
 
 use PVE::SafeSyslog;
 use PVE::Exception qw(raise raise_param_exc);
 use PVE::RESTHandler;
-use PVE::PodParser;
+use PVE::INotify;
 
 use base qw(PVE::RESTHandler);
 
+# $cmddef defines which (sub)commands are available in a specific CLI class.
+# A real command is always an array consisting of its class, name, array of
+# position fixed (required) parameters and hash of predefined parameters when
+# mapping a CLI command t o an API call. Optionally an output method can be
+# passed at the end, e.g., for formatting or transformation purpose.
+#
+# [class, name, fixed_params, API_pre-set params, output_sub ]
+#
+# In case of so called 'simple commands', the $cmddef can be also just an
+# array.
+#
+# Examples:
+# $cmddef = {
+#     command => [ 'PVE::API2::Class', 'command', [ 'arg1', 'arg2' ], { node => $nodename } ],
+#     do => {
+#         this => [ 'PVE::API2::OtherClass', 'method', [ 'arg1' ], undef, sub {
+#             my ($res) = @_;
+#             print "$res\n";
+#         }],
+#         that => [ 'PVE::API2::OtherClass', 'subroutine' [] ],
+#     },
+#     dothat => { alias => 'do that' },
+# }
 my $cmddef;
 my $exename;
+my $cli_handler_class;
+
+my $assert_initialized = sub {
+    my @caller = caller;
+    die "$caller[0]:$caller[2] - not initialized\n"
+	if !($cmddef && $exename && $cli_handler_class);
+};
+
+my $abort = sub {
+    my ($reason, $cmd) = @_;
+    print_usage_short (\*STDERR, $reason, $cmd);
+    exit (-1);
+};
 
 my $expand_command_name = sub {
     my ($def, $cmd) = @_;
 
     if (!$def->{$cmd}) {
-	my $expanded;
-	for my $k (keys(%$def)) {
-	    if ($k =~ m/^$cmd/) {
-		if ($expanded) {
-		    $expanded = undef; # more than one match
-		    last;
-		} else {
-		    $expanded = $k;
-		}
-	    }
-	}
-	$cmd = $expanded if $expanded;
+	my @expanded = grep { /^\Q$cmd\E/ } keys %$def;
+	return $expanded[0] if scalar(@expanded) == 1; # enforce exact match
     }
     return $cmd;
 };
 
-my $complete_command_names = sub {
-    my $res = [];
+my $get_commands = sub {
+    my $def = shift // die "no command definition passed!";
+    return [ grep { !(ref($def->{$_}) eq 'HASH' && defined($def->{$_}->{alias})) } sort keys %$def ];
+};
+
+my $complete_command_names = sub { $get_commands->($cmddef) };
 
-    return if ref($cmddef) ne 'HASH';
+# traverses the command definition using the $argv array, resolving one level
+# of aliases.
+# Returns the matching (sub) command and its definition, and argument array for
+# this (sub) command and a hash where we marked which (sub) commands got
+# expanded (e.g. st => status) while traversing
+sub resolve_cmd {
+    my ($argv, $is_alias) = @_;
 
-    foreach my $cmd (keys %$cmddef) {
-	next if $cmd eq 'help';
-	push @$res, $cmd;
+    my ($def, $cmd) = ($cmddef, $argv);
+
+    if (ref($argv) eq 'ARRAY') {
+	my $expanded = {};
+	my $last_arg_id = scalar(@$argv) - 1;
+
+	for my $i (0..$last_arg_id) {
+	    $cmd = $expand_command_name->($def, $argv->[$i]);
+	    $expanded->{$argv->[$i]} = $cmd if $cmd ne $argv->[$i];
+	    last if !defined($def->{$cmd});
+	    $def = $def->{$cmd};
+
+	    if (ref($def) eq 'ARRAY') {
+		# could expand to a real command, rest of $argv are its arguments
+		my $cmd_args = [ @$argv[$i+1..$last_arg_id] ];
+		return ($cmd, $def, $cmd_args, $expanded);
+	    }
+
+	    if (defined($def->{alias})) {
+		die "alias loop detected for '$cmd'" if $is_alias; # avoids cycles
+		# replace aliased (sub)command with the expanded aliased command
+		splice @$argv, $i, 1, split(/ +/, $def->{alias});
+		return resolve_cmd($argv, 1);
+	    }
+	}
+	# got either a special command (bashcomplete, verifyapi) or an unknown
+	# cmd, just return first entry as cmd and the rest of $argv as cmd_arg
+	my $cmd_args = [ @$argv[1..$last_arg_id] ];
+	return ($argv->[0], $def, $cmd_args, $expanded);
     }
+    return ($cmd, $def);
+}
 
-    return $res;
-};
+sub generate_usage_str {
+    my ($format, $cmd, $indent, $separator, $sortfunc) = @_;
+
+    $assert_initialized->();
+    die 'format required' if !$format;
+
+    $sortfunc //= sub { sort keys %{$_[0]} };
+    $separator //= '';
+    $indent //= '';
+
+    my $can_read_pass = $cli_handler_class->can('read_password');
+    my $param_mapping_func = $cli_handler_class->can('string_param_file_mapping');
+
+    my ($subcmd, $def) = resolve_cmd($cmd);
+
+    my $generate;
+    $generate = sub {
+	my ($indent, $separator, $def, $prefix) = @_;
+
+	my $str = '';
+	if (ref($def) eq 'HASH') {
+	    my $oldclass = undef;
+	    foreach my $cmd (&$sortfunc($def)) {
+
+		if (ref($def->{$cmd}) eq 'ARRAY') {
+		    my ($class, $name, $arg_param, $fixed_param) = @{$def->{$cmd}};
+
+		    $str .= $separator if $oldclass && $oldclass ne $class;
+		    $str .= $indent;
+		    $str .= $class->usage_str($name, "$prefix $cmd", $arg_param,
+		                              $fixed_param, $format,
+		                              $can_read_pass, $param_mapping_func);
+		    $oldclass = $class;
+
+		} elsif (defined($def->{$cmd}->{alias}) && ($format eq 'asciidoc')) {
+
+		    $str .= "*$prefix $cmd*\n\nAn alias for '$exename $def->{$cmd}->{alias}'.\n\n";
+
+		} else {
+		    next if $def->{$cmd}->{alias};
+
+		    my $substr = $generate->($indent, $separator, $def->{$cmd}, "$prefix $cmd");
+		    if ($substr) {
+			$substr .= $separator if $substr !~ /\Q$separator\E{2}/;
+			$str .= $substr;
+		    }
+		}
+
+	    }
+	} else {
+	    my ($class, $name, $arg_param, $fixed_param) = @$def;
+	    $abort->("unknown command '$cmd'") if !$class;
+
+	    $str .= $indent;
+	    $str .= $class->usage_str($name, $prefix, $arg_param, $fixed_param, $format,
+	                              $can_read_pass, $param_mapping_func);
+	}
+	return $str;
+    };
+
+    my $cmdstr = $exename;
+    $cmdstr .= ' ' . join(' ', @$cmd) if defined($cmd);
+
+    return $generate->($indent, $separator, $def, $cmdstr);
+}
 
 __PACKAGE__->register_method ({
-    name => 'help', 
+    name => 'help',
     path => 'help',
     method => 'GET',
     description => "Get help about specified command.",
     parameters => {
-    	additionalProperties => 0,
+	additionalProperties => 0,
 	properties => {
-	    cmd => {
-		description => "Command name",
-		type => 'string',
-		optional => 1,
+	    'extra-args' => PVE::JSONSchema::get_standard_option('extra-args', {
+		description => 'Shows help for a specific command',
 		completion => $complete_command_names,
-	    },
+	    }),
 	    verbose => {
 		description => "Verbose output format.",
 		type => 'boolean',
@@ -69,34 +193,34 @@ __PACKAGE__->register_method ({
 	},
     },
     returns => { type => 'null' },
-    
+
     code => sub {
 	my ($param) = @_;
 
-	die "not initialized" if !($cmddef && $exename);
+	$assert_initialized->();
 
-	my $cmd = $param->{cmd};
+	my $cmd = $param->{'extra-args'};
 
-	my $verbose = defined($cmd) && $cmd; 
+	my $verbose = defined($cmd) && $cmd;
 	$verbose = $param->{verbose} if defined($param->{verbose});
 
 	if (!$cmd) {
 	    if ($verbose) {
 		print_usage_verbose();
-	    } else {		
+	    } else {
 		print_usage_short(\*STDOUT);
 	    }
 	    return undef;
 	}
 
-	$cmd = &$expand_command_name($cmddef, $cmd);
-
-	my ($class, $name, $arg_param, $uri_param) = @{$cmddef->{$cmd} || []};
-
-	raise_param_exc({ cmd => "no such command '$cmd'"}) if !$class;
-
+	my $str;
+	if ($verbose) {
+	    $str = generate_usage_str('full', $cmd, '');
+	} else {
+	    $str = generate_usage_str('short', $cmd, ' ' x 7);
+	}
+	$str =~ s/^\s+//;
 
-	my $str = $class->usage_str($name, "$exename $cmd", $arg_param, $uri_param, $verbose ? 'full' : 'short');
 	if ($verbose) {
 	    print "$str\n";
 	} else {
@@ -107,88 +231,66 @@ __PACKAGE__->register_method ({
 
     }});
 
-sub print_simple_pod_manpage {
-    my ($podfn, $class, $name, $arg_param, $uri_param) = @_;
+sub print_simple_asciidoc_synopsis {
+    $assert_initialized->();
 
-    my $synopsis = " $name help\n\n";
-    my $str = $class->usage_str($name, $name, $arg_param, $uri_param, 'long');
-    $str =~ s/^USAGE://;
-    $str =~ s/\n/\n /g;
-    $synopsis .= $str;
+    my $synopsis = "*${exename}* `help`\n\n";
+    $synopsis .= generate_usage_str('asciidoc');
 
-    my $parser = PVE::PodParser->new();
-    $parser->{include}->{synopsis} = $synopsis;
-    $parser->parse_from_file($podfn);
+    return $synopsis;
 }
 
-sub print_pod_manpage {
-    my ($podfn) = @_;
-
-    die "not initialized" if !($cmddef && $exename);
-    die "no pod file specified" if !$podfn;
+sub print_asciidoc_synopsis {
+    $assert_initialized->();
 
     my $synopsis = "";
-    
-    $synopsis .= " $exename <COMMAND> [ARGS] [OPTIONS]\n\n";
-
-    my $style = 'full'; # or should we use 'short'?
-    my $oldclass;
-    foreach my $cmd (sorted_commands()) {
-	my ($class, $name, $arg_param, $uri_param) = @{$cmddef->{$cmd}};
-	my $str = $class->usage_str($name, "$exename $cmd", $arg_param, 
-				    $uri_param, $style);
-	$str =~ s/^USAGE: //;
-
-	$synopsis .= "\n" if $oldclass && $oldclass ne $class;
-	$str =~ s/\n/\n /g;
-	$synopsis .= " $str\n\n";
-	$oldclass = $class;
-    }
+
+    $synopsis .= "*${exename}* `<COMMAND> [ARGS] [OPTIONS]`\n\n";
+
+    $synopsis .= generate_usage_str('asciidoc');
 
     $synopsis .= "\n";
 
-    my $parser = PVE::PodParser->new();
-    $parser->{include}->{synopsis} = $synopsis;
-    $parser->parse_from_file($podfn);
+    return $synopsis;
 }
 
 sub print_usage_verbose {
-
-    die "not initialized" if !($cmddef && $exename);
+    $assert_initialized->();
 
     print "USAGE: $exename <COMMAND> [ARGS] [OPTIONS]\n\n";
 
-    foreach my $cmd (sort keys %$cmddef) {
-	my ($class, $name, $arg_param, $uri_param) = @{$cmddef->{$cmd}};
-	my $str = $class->usage_str($name, "$exename $cmd", $arg_param, $uri_param, 'full');
-	print "$str\n\n";
-    }
-}
+    my $str = generate_usage_str('full');
 
-sub sorted_commands {   
-    return sort { ($cmddef->{$a}->[0] cmp $cmddef->{$b}->[0]) || ($a cmp $b)} keys %$cmddef;
+    print "$str\n";
 }
 
 sub print_usage_short {
-    my ($fd, $msg) = @_;
+    my ($fd, $msg, $cmd) = @_;
 
-    die "not initialized" if !($cmddef && $exename);
+    $assert_initialized->();
 
     print $fd "ERROR: $msg\n" if $msg;
     print $fd "USAGE: $exename <COMMAND> [ARGS] [OPTIONS]\n";
 
-    my $oldclass;
-    foreach my $cmd (sorted_commands()) {
-	my ($class, $name, $arg_param, $uri_param) = @{$cmddef->{$cmd}};
-	my $str = $class->usage_str($name, "$exename $cmd", $arg_param, $uri_param, 'short');
-	print $fd "\n" if $oldclass && $oldclass ne $class;
-	print $fd "       $str";
-	$oldclass = $class;
-    }
+    print {$fd} generate_usage_str('short', $cmd, ' ' x 7, "\n", sub {
+	my ($h) = @_;
+	return sort {
+	    if (ref($h->{$a}) eq 'ARRAY' && ref($h->{$b}) eq 'ARRAY') {
+		# $a and $b are both real commands order them by their class
+		return $h->{$a}->[0] cmp $h->{$b}->[0] || $a cmp $b;
+	    } elsif (ref($h->{$a}) eq 'ARRAY' xor ref($h->{$b}) eq 'ARRAY') {
+		# real command and subcommand mixed, put sub commands first
+		return ref($h->{$b}) eq 'ARRAY' ? -1 : 1;
+	    } else {
+		# both are either from the same class or subcommands
+		return $a cmp $b;
+	    }
+	} keys %$h;
+    });
 }
 
 my $print_bash_completion = sub {
-    my ($cmddef, $simple_cmd, $bash_command, $cur, $prev) = @_;
+    my ($simple_cmd, $bash_command, $cur, $prev) = @_;
 
     my $debug = 0;
 
@@ -199,36 +301,33 @@ my $print_bash_completion = sub {
     my $cmdline = substr($ENV{COMP_LINE}, 0, $ENV{COMP_POINT});
     print STDERR "\nCMDLINE: $ENV{COMP_LINE}\n" if $debug;
 
-    # fixme: shell quoting??
-    my @args = split(/\s+/, $cmdline);
-    my $pos = scalar(@args) - 2;
-    $pos += 1 if $cmdline =~ m/\s+$/;
-
-    print STDERR "CMDLINE:$pos:$cmdline\n" if $debug;
-
-    return if $pos < 0;
-
+    my $args = PVE::Tools::split_args($cmdline);
+    shift @$args; # no need for program name
     my $print_result = sub {
 	foreach my $p (@_) {
 	    print "$p\n" if $p =~ m/^$cur/;
 	}
     };
 
-    my $cmd;
-    if ($simple_cmd) {
-	$cmd = $simple_cmd;
-    } else {
-	if ($pos == 0) {
-	    &$print_result(keys %$cmddef);
+    my ($cmd, $def) = ($simple_cmd, $cmddef);
+    if (!$simple_cmd) {
+	($cmd, $def, $args, my $expaned) = resolve_cmd($args);
+
+	if (ref($def) eq 'HASH') {
+	    &$print_result(@{$get_commands->($def)});
+	    return;
+	}
+	if (my $expanded_cmd = $expaned->{$cur}) {
+	    print "$expanded_cmd\n";
 	    return;
 	}
-	$cmd = $args[1];
     }
-
-    my $def = $cmddef->{$cmd};
     return if !$def;
 
-    print STDERR "CMDLINE1:$pos:$cmdline\n" if $debug;
+    my $pos = scalar(@$args) - 1;
+    $pos += 1 if $cmdline =~ m/\s+$/;
+    print STDERR "pos: $pos\n" if $debug;
+    return if $pos < 0;
 
     my $skip_param = {};
 
@@ -236,15 +335,14 @@ my $print_bash_completion = sub {
     $arg_param //= [];
     $uri_param //= {};
 
+    $arg_param = [ $arg_param ] if !ref($arg_param);
+
     map { $skip_param->{$_} = 1; } @$arg_param;
     map { $skip_param->{$_} = 1; } keys %$uri_param;
 
-    my $fpcount = scalar(@$arg_param);
-
     my $info = $class->map_method_by_name($name);
 
-    my $schema = $info->{parameters};
-    my $prop = $schema->{properties};
+    my $prop = $info->{parameters}->{properties};
 
     my $print_parameter_completion = sub {
 	my ($pname) = @_;
@@ -252,7 +350,7 @@ my $print_bash_completion = sub {
 	if ($d->{completion}) {
 	    my $vt = ref($d->{completion});
 	    if ($vt eq 'CODE') {
-		my $res = $d->{completion}->($cmd, $pname, $cur);
+		my $res = $d->{completion}->($cmd, $pname, $cur, $args);
 		&$print_result(@$res);
 	    }
 	} elsif ($d->{type} eq 'boolean') {
@@ -263,9 +361,9 @@ my $print_bash_completion = sub {
     };
 
     # positional arguments
-    $pos += 1 if $simple_cmd;
-    if ($fpcount && $pos <= $fpcount) {
-	my $pname = $arg_param->[$pos -1];
+    $pos++ if $simple_cmd;
+    if ($pos < scalar(@$arg_param)) {
+	my $pname = $arg_param->[$pos];
 	&$print_parameter_completion($pname);
 	return;
     }
@@ -297,13 +395,22 @@ sub verify_api {
     PVE::RESTHandler::validate_method_schemas();
 }
 
+my $get_exe_name = sub {
+    my ($class) = @_;
+
+    my $name = $class;
+    $name =~ s/^.*:://;
+    $name =~ s/_/-/g;
+
+    return $name;
+};
+
 sub generate_bash_completions {
     my ($class) = @_;
 
     # generate bash completion config
 
-    $exename = $class;
-    $exename =~ s/^.*:://;
+    $exename = &$get_exe_name($class);
 
     print <<__EOD__;
 # $exename bash completion
@@ -313,162 +420,148 @@ sub generate_bash_completions {
 # this modifies global var, but I found no better way
 COMP_WORDBREAKS=\${COMP_WORDBREAKS//:}
 
-complete -C '$exename bashcomplete' $exename
+complete -o default -C '$exename bashcomplete' $exename
 __EOD__
 }
 
-sub find_cli_class_source {
-    my ($exename) = @_;
-
-    my $filename;
-
-    my $cpath = "PVE/CLI/${exename}.pm";
-    my $spath = "PVE/Service/${exename}.pm";
-    foreach my $p (@INC) {
-	foreach my $s (($cpath, $spath)) {
-	    my $testfn = "$p/$s";
-	    if (-f $testfn) {
-		$filename = $testfn;
-		last;
-	    }
-	}
-	last if defined($filename);
-    }
-
-    return $filename;
-}
-
-sub generate_pod_manpage {
-    my ($class, $podfn) = @_;
+sub generate_asciidoc_synopsys {
+    my ($class) = @_;
+    $class->generate_asciidoc_synopsis();
+};
 
-    $exename = $class;
-    $exename =~ s/^.*:://;
+sub generate_asciidoc_synopsis {
+    my ($class) = @_;
 
-    $podfn = find_cli_class_source($exename) if !defined($podfn);
+    $cli_handler_class = $class;
 
-    die "unable to find source for class '$class'" if !$podfn;
+    $exename = &$get_exe_name($class);
 
     no strict 'refs';
     my $def = ${"${class}::cmddef"};
+    $cmddef = $def;
 
     if (ref($def) eq 'ARRAY') {
-	print_simple_pod_manpage($podfn, @$def);
+	print_simple_asciidoc_synopsis();
     } else {
-	$cmddef = $def;
-
 	$cmddef->{help} = [ __PACKAGE__, 'help', ['cmd'] ];
 
-	print_pod_manpage($podfn);
+	print_asciidoc_synopsis();
     }
 }
 
-sub run_cli {
-    my ($class, $pwcallback, $podfn, $preparefunc) = @_;
-
-    $ENV{'PATH'} = '/sbin:/bin:/usr/sbin:/usr/bin';
-
-    $exename = $class;
-    $exename =~ s/^.*:://;
-
-    initlog($exename);
+# overwrite this if you want to run/setup things early
+sub setup_environment {
+    my ($class) = @_;
 
+    # do nothing by default
+}
 
-    if ($class !~ m/^PVE::Service::/) {
-	die "please run as root\n" if $> != 0;
+my $handle_cmd  = sub {
+    my ($args, $read_password_func, $preparefunc, $param_mapping_func) = @_;
 
-	PVE::INotify::inotify_init();
+    $cmddef->{help} = [ __PACKAGE__, 'help', ['extra-args'] ];
 
-	my $rpcenv = PVE::RPCEnvironment->init('cli');
-	$rpcenv->init_request();
-	$rpcenv->set_language($ENV{LANG});
-	$rpcenv->set_user('root@pam');
-    }
+    my $cmd_str = join(' ', @$args);
+    my ($cmd, $def, $cmd_args) = resolve_cmd($args);
 
-    no strict 'refs';
-    my $def = ${"${class}::cmddef"};
+    $abort->("no command specified") if !$cmd;
 
-    if (ref($def) eq 'ARRAY') {
-	handle_simple_cmd($def, \@ARGV, $pwcallback, $podfn, $preparefunc);
-    } else {
-	$cmddef = $def;
-	my $cmd = shift @ARGV;
-	handle_cmd($cmddef, $exename, $cmd, \@ARGV, $pwcallback, $podfn, $preparefunc);
+    # call verifyapi before setup_environment(), don't execute any real code in
+    # this case
+    if ($cmd eq 'verifyapi') {
+	PVE::RESTHandler::validate_method_schemas();
+	return;
     }
 
-    exit 0;
-}
-
-sub handle_cmd {
-    my ($def, $cmdname, $cmd, $args, $pwcallback, $podfn, $preparefunc) = @_;
-
-    $cmddef = $def;
-    $exename = $cmdname;
-
-    $cmddef->{help} = [ __PACKAGE__, 'help', ['cmd'] ];
+    $cli_handler_class->setup_environment();
 
-    if (!$cmd) { 
-	print_usage_short (\*STDERR, "no command specified");
-	exit (-1);
-    } elsif ($cmd eq 'verifyapi') {
-	PVE::RESTHandler::validate_method_schemas();
-	return;
-    } elsif ($cmd eq 'printmanpod') {
-	$podfn = find_cli_class_source($exename) if !defined($podfn);
-	print_pod_manpage($podfn);
-	return;
-    } elsif ($cmd eq 'bashcomplete') {
-	&$print_bash_completion($cmddef, 0, @$args);
+    if ($cmd eq 'bashcomplete') {
+	&$print_bash_completion(undef, @$cmd_args);
 	return;
     }
 
-    &$preparefunc() if $preparefunc;
-
-    $cmd = &$expand_command_name($cmddef, $cmd);
+    # checked special commands, if def is still a hash we got an incomplete sub command
+    $abort->("incomplete command '$exename $cmd_str'") if ref($def) eq 'HASH';
 
-    my ($class, $name, $arg_param, $uri_param, $outsub) = @{$cmddef->{$cmd} || []};
+    &$preparefunc() if $preparefunc;
 
-    if (!$class) {
-	print_usage_short (\*STDERR, "unknown command '$cmd'");
-	exit (-1);
-    }
+    my ($class, $name, $arg_param, $uri_param, $outsub) = @{$def || []};
+    $abort->("unknown command '$cmd_str'") if !$class;
 
-    my $prefix = "$exename $cmd";
-    my $res = $class->cli_handler($prefix, $name, \@ARGV, $arg_param, $uri_param, $pwcallback);
+    my $prefix = "$exename $cmd_str";
+    my $res = $class->cli_handler($prefix, $name, $cmd_args, $arg_param, $uri_param, $read_password_func, $param_mapping_func);
 
     &$outsub($res) if $outsub;
-}
+};
 
-sub handle_simple_cmd {
-    my ($def, $args, $pwcallback, $podfn, $preparefunc) = @_;
+my $handle_simple_cmd = sub {
+    my ($args, $read_password_func, $preparefunc, $param_mapping_func) = @_;
 
-    my ($class, $name, $arg_param, $uri_param, $outsub) = @{$def};
+    my ($class, $name, $arg_param, $uri_param, $outsub) = @{$cmddef};
     die "no class specified" if !$class;
 
     if (scalar(@$args) >= 1) {
 	if ($args->[0] eq 'help') {
 	    my $str = "USAGE: $name help\n";
-	    $str .= $class->usage_str($name, $name, $arg_param, $uri_param, 'long');
+	    $str .= generate_usage_str('long');
 	    print STDERR "$str\n\n";
 	    return;
-	} elsif ($args->[0] eq 'bashcomplete') {
-	    shift @$args;
-	    &$print_bash_completion({ $name => $def }, $name, @$args);
-	    return;
 	} elsif ($args->[0] eq 'verifyapi') {
 	    PVE::RESTHandler::validate_method_schemas();
 	    return;
-	} elsif ($args->[0] eq 'printmanpod') {
-	    $podfn = find_cli_class_source($name) if !defined($podfn);
-	    print_simple_pod_manpage($podfn, @$def);
+	}
+    }
+
+    $cli_handler_class->setup_environment();
+
+    if (scalar(@$args) >= 1) {
+	if ($args->[0] eq 'bashcomplete') {
+	    shift @$args;
+	    &$print_bash_completion($name, @$args);
 	    return;
 	}
     }
 
     &$preparefunc() if $preparefunc;
 
-    my $res = $class->cli_handler($name, $name, \@ARGV, $arg_param, $uri_param, $pwcallback);
+    my $res = $class->cli_handler($name, $name, \@ARGV, $arg_param, $uri_param, $read_password_func, $param_mapping_func);
 
     &$outsub($res) if $outsub;
+};
+
+sub run_cli_handler {
+    my ($class, %params) = @_;
+
+    $cli_handler_class = $class;
+
+    $ENV{'PATH'} = '/sbin:/bin:/usr/sbin:/usr/bin';
+
+    foreach my $key (keys %params) {
+	next if $key eq 'prepare';
+	next if $key eq 'no_init'; # not used anymore
+	next if $key eq 'no_rpcenv'; # not used anymore
+	die "unknown parameter '$key'";
+    }
+
+    my $preparefunc = $params{prepare};
+
+    my $read_password_func = $class->can('read_password');
+    my $param_mapping_func = $class->can('string_param_file_mapping');
+
+    $exename = &$get_exe_name($class);
+
+    initlog($exename);
+
+    no strict 'refs';
+    $cmddef = ${"${class}::cmddef"};
+
+    if (ref($cmddef) eq 'ARRAY') {
+	&$handle_simple_cmd(\@ARGV, $read_password_func, $preparefunc, $param_mapping_func);
+    } else {
+	&$handle_cmd(\@ARGV, $read_password_func, $preparefunc, $param_mapping_func);
+    }
+
+    exit 0;
 }
 
 1;