X-Git-Url: https://git.proxmox.com/?p=pve-access-control.git;a=blobdiff_plain;f=PVE%2FRPCEnvironment.pm;h=c661edad906a9ef64b0c24fef193d053e9c56085;hp=71e2c43b782d937c4e1b130fc6a3d377ce1f3f5b;hb=1f1c4593a19e4eed928f4518279be23a10898eac;hpb=e42eedbca470cfd545fa386820f0322a05e5e2b4

diff --git a/PVE/RPCEnvironment.pm b/PVE/RPCEnvironment.pm
index 71e2c43..c661eda 100644
--- a/PVE/RPCEnvironment.pm
+++ b/PVE/RPCEnvironment.pm
@@ -2,793 +2,450 @@ package PVE::RPCEnvironment;
 
 use strict;
 use warnings;
-use POSIX qw(:sys_wait_h EINTR);
-use IO::Handle;
-use IO::File;
-use IO::Select;
-use Fcntl qw(:flock);
+
+use PVE::RESTEnvironment;
+
+use PVE::Exception qw(raise raise_perm_exc);
 use PVE::SafeSyslog;
 use PVE::Tools;
 use PVE::INotify;
 use PVE::Cluster;
 use PVE::ProcFSTools;
 use PVE::AccessControl;
-use CGI;
 
-# we use this singleton class to pass RPC related environment values
+use base qw(PVE::RESTEnvironment);
 
-my $pve_env;
+# ACL cache
 
-# save $SIG{CHLD} handler implementation.
-# simply set $SIG{CHLD} = $worker_reaper;
-# and register forked processes with &$register_worker(pid)
-# Note: using $SIG{CHLD} = 'IGNORE' or $SIG{CHLD} = sub { wait (); } or ...
-# has serious side effects, because perls built in system() and open()
-# functions can't get the correct exit status of a child. So we cant use 
-# that (also see perlipc)
+my $compile_acl_path = sub {
+    my ($self, $user, $path) = @_;
 
-my $WORKER_PIDS;
+    my $cfg = $self->{user_cfg};
 
-my $log_task_result = sub {
-    my ($upid, $user, $status) = @_;
+    return undef if !$cfg->{roles};
 
-    my $msg = 'successful';
-    my $pri = 'info';
-    if ($status != 0) {
-	my $ec = $status >> 8;
-	my $ic = $status & 255;
-	$msg = $ec ? "failed ($ec)" : "interrupted ($ic)";
-	$pri = 'err';
-    }
-    my $tlist = active_workers($upid);
-    PVE::Cluster::broadcast_tasklist($tlist);
-    my $task;
-    foreach my $t (@$tlist) {
-	if ($t->{upid} eq $upid) {
-	    $task = $t;
-	    last;
+    die "internal error" if $user eq 'root@pam';
+
+    my $cache = $self->{aclcache};
+    $cache->{$user} = {} if !$cache->{$user};
+    my $data = $cache->{$user};
+
+    if (!$data->{poolroles}) {
+	$data->{poolroles} = {};
+
+	foreach my $pool (keys %{$cfg->{pools}}) {
+	    my $d = $cfg->{pools}->{$pool};
+	    my @ra = PVE::AccessControl::roles($cfg, $user, "/pool/$pool"); # pool roles
+	    next if !scalar(@ra);
+	    foreach my $vmid (keys %{$d->{vms}}) {
+		for my $role (@ra) {
+		    $data->{poolroles}->{"/vms/$vmid"}->{$role} = 1;
+		}
+	    }
+	    foreach my $storeid (keys %{$d->{storage}}) {
+		for my $role (@ra) {
+		    $data->{poolroles}->{"/storage/$storeid"}->{$role} = 1;
+		}
+	    }
 	}
     }
-    if ($task && $task->{status}) {
-	$msg = $task->{status};
-    }
-    PVE::Cluster::log_msg($pri, $user, "end task $upid $msg");
-};
 
-my $worker_reaper = sub {
-    local $!; local $?;
-    foreach my $pid (keys %$WORKER_PIDS) {
-        my $waitpid = waitpid ($pid, WNOHANG);
-        if (defined($waitpid) && ($waitpid == $pid)) {
-	    my $info = $WORKER_PIDS->{$pid};
-	    if ($info && $info->{upid} && $info->{user}) {
-		&$log_task_result($info->{upid}, $info->{user}, $?);
+    my @ra = PVE::AccessControl::roles($cfg, $user, $path);
+
+    # apply roles inherited from pools
+    # Note: assume we do not want to propagate those privs
+    if ($data->{poolroles}->{$path}) {
+	if (!($ra[0] && $ra[0] eq 'NoAccess')) {
+	    if ($data->{poolroles}->{$path}->{NoAccess}) {
+		@ra = ('NoAccess');
+	    } else {
+		foreach my $role (keys %{$data->{poolroles}->{$path}}) {
+		    push @ra, $role;
+		}
 	    }
-            delete ($WORKER_PIDS->{$pid});
 	}
     }
-};
-
-my $register_worker = sub {
-    my ($pid, $user, $upid) = @_;
 
-    return if !$pid;
+    $data->{roles}->{$path} = [ @ra ];
 
-    # do not register if already finished
-    my $waitpid = waitpid ($pid, WNOHANG);
-    if (defined($waitpid) && ($waitpid == $pid)) {
-	delete ($WORKER_PIDS->{$pid});
-	return;
+    my $privs = {};
+    foreach my $role (@ra) {
+	if (my $privset = $cfg->{roles}->{$role}) {
+	    foreach my $p (keys %$privset) {
+		$privs->{$p} = 1;
+	    }
+	}
     }
+    $data->{privs}->{$path} = $privs;
 
-    $WORKER_PIDS->{$pid} = {
-	user => $user,
-	upid => $upid,
-    };
+    return $privs;
 };
 
-# ACL cache
+sub roles {
+   my ($self, $user, $path) = @_;
 
-my $compile_acl = sub {
-    my ($self, $user) = @_;
+   if ($user eq 'root@pam') { # root can do anything
+       return ('Administrator');
+   }
 
-    my $res = {};
-    my $cfg = $self->{user_cfg};
+   $user = PVE::AccessControl::verify_username($user, 1);
+   return () if !$user;
 
-    return undef if !$cfg->{roles};
+   my $cache = $self->{aclcache};
+   $cache->{$user} = {} if !$cache->{$user};
 
-    if ($user eq 'root@pam') { # root can do anything
-	return {'/' => $cfg->{roles}->{'Administrator'}};
-    } 
+   my $acl = $cache->{$user};
 
-    foreach my $path (sort keys %{$cfg->{acl}}) {
-	my @ra = PVE::AccessControl::roles($cfg, $user, $path);
+   my $roles = $acl->{roles}->{$path};
+   return @$roles if $roles;
 
-	my $privs = {};
-	foreach my $role (@ra) {
-	    if (my $privset = $cfg->{roles}->{$role}) {
-		foreach my $p (keys %$privset) {
-		    $privs->{$p} = 1;
-		}
-	    }
-	}
-
-	$res->{$path} = $privs;
-    }
-
-    return $res;
-};
+   &$compile_acl_path($self, $user, $path);
+   $roles = $acl->{roles}->{$path} || [];
+   return @$roles;
+}
 
 sub permissions {
     my ($self, $user, $path) = @_;
 
+    if ($user eq 'root@pam') { # root can do anything
+	my $cfg = $self->{user_cfg};
+	return $cfg->{roles}->{'Administrator'};
+    }
+
     $user = PVE::AccessControl::verify_username($user, 1);
     return {} if !$user;
 
     my $cache = $self->{aclcache};
+    $cache->{$user} = {} if !$cache->{$user};
 
     my $acl = $cache->{$user};
 
-    if (!$acl) {
-	if (!($acl = &$compile_acl($self, $user))) {
-	    return {};
-	}
-	$cache->{$user} = $acl;
-    }
-
-    my $perm;
-
-    if (!($perm = $acl->{$path})) {
-	$perm = {};
-	foreach my $p (sort keys %$acl) {
-	    my $final = ($path eq $p);
-	    
-	    next if !(($p eq '/') || $final || ($path =~ m|^$p/|));
+    my $perm = $acl->{privs}->{$path};
+    return $perm if $perm;
 
-	    $perm = $acl->{$p};
-	}
-	$acl->{$path} = $perm;
-    }
-
-    return $perm;
+    return &$compile_acl_path($self, $user, $path);
 }
 
 sub check {
-    my ($self, $user, $path, $privs) = @_;
+    my ($self, $user, $path, $privs, $noerr) = @_;
 
     my $perm = $self->permissions($user, $path);
 
     foreach my $priv (@$privs) {
-	return undef if !$perm->{$priv};
+	PVE::AccessControl::verify_privname($priv);
+	if (!$perm->{$priv}) {
+	    return undef if $noerr;
+	    raise_perm_exc("$path, $priv");
+	}
     };
 
     return 1;
 };
 
-sub user_enabled {
-    my ($self, $user) = @_;
-    
-    my $cfg = $self->{user_cfg};
-    return PVE::AccessControl::user_enabled($cfg, $user);
-}
-
-# initialize environment - must be called once at program startup
-sub init {
-    my ($class, $type, %params) = @_;
-
-    $class = ref($class) || $class;
+sub check_any {
+    my ($self, $user, $path, $privs, $noerr) = @_;
 
-    die "already initialized" if $pve_env;
-
-    die "unknown environment type" if !$type || $type !~ m/^(cli|pub|priv|ha)$/;
-
-    $SIG{CHLD} = $worker_reaper;
-
-    # environment types
-    # cli  ... command started fron command line
-    # pub  ... access from public server (apache)
-    # priv ... access from private server (pvedaemon)
-    # ha   ... access from HA resource manager agent (rgmanager)
-    
-    my $self = {
-	user_cfg => {},
-	aclcache => {},
-	aclversion => undef,
-	type => $type,
-    };
-
-    bless $self, $class;
+    my $perm = $self->permissions($user, $path);
 
-    foreach my $p (keys %params) {
-	if ($p eq 'atfork') {
-	    $self->{$p} = $params{$p};
-	} else {
-	    die "unknown option '$p'";
+    my $found = 0;
+    foreach my $priv (@$privs) {
+	PVE::AccessControl::verify_privname($priv);
+	if ($perm->{$priv}) {
+	    $found = 1;
+	    last;
 	}
-    }
-
-    $pve_env = $self;
-
-    my ($sysname, $nodename) = POSIX::uname();
-
-    $nodename =~ s/\..*$//; # strip domain part, if any
-
-    $self->{nodename} = $nodename;
+    };
 
-    return $self;
-}; 
+    return 1 if $found;
 
-# get the singleton 
-sub get {
+    return undef if $noerr;
 
-    die "not initialized" if !$pve_env;
+    raise_perm_exc("$path, " . join("|", @$privs));
+};
 
-    return $pve_env;
+sub check_full {
+    my ($self, $username, $path, $privs, $any, $noerr) = @_;
+    if ($any) {
+	return $self->check_any($username, $path, $privs, $noerr);
+    } else {
+	return $self->check($username, $path, $privs, $noerr);
+    }
 }
 
-sub parse_params {
-    my ($self, $enable_upload) = @_;
+sub check_user_enabled {
+    my ($self, $user, $noerr) = @_;
 
-    if ($self->{request_rec}) {
-	my $cgi;
-	if ($enable_upload) {
-	    $cgi = CGI->new($self->{request_rec});
-	} else {
-	    # disable upload using empty upload_hook
-	    $cgi = CGI->new($self->{request_rec}, sub {}, undef, 0);
-	}
-	$self->{cgi} = $cgi;
-	my $params = $cgi->Vars();
-	return $params;
-    } elsif ($self->{params}) {
-	return $self->{params};
-    } else {
-	die "no parameters registered";
-    }
+    my $cfg = $self->{user_cfg};
+    return PVE::AccessControl::check_user_enabled($cfg, $user, $noerr);
 }
 
-sub get_upload_info {
-    my ($self, $param) = @_;
+sub check_user_exist {
+    my ($self, $user, $noerr) = @_;
 
-    my $cgi = $self->{cgi};
-    die "CGI not initialized" if !$cgi;
+    my $cfg = $self->{user_cfg};
+    return PVE::AccessControl::check_user_exist($cfg, $user, $noerr);
+}
 
-    my $pd = $cgi->param($param);
-    die "unable to get cgi parameter info\n" if !$pd;
-    my $info = $cgi->uploadInfo($pd);
-    die "unable to get cgi upload info\n" if !$info;
+sub check_pool_exist {
+    my ($self, $pool, $noerr) = @_;
 
-    my $res = { %$info };
+    my $cfg = $self->{user_cfg};
 
-    my $tmpfilename = $cgi->tmpFileName($pd);
-    die "unable to get cgi upload file name\n" if !$tmpfilename;
-    $res->{tmpfilename} = $tmpfilename;
+    return 1 if $cfg->{pools}->{$pool};
 
-    #my $hndl = $cgi->upload($param);
-    #die "unable to get cgi upload handle\n" if !$hndl;
-    #$res->{handle} = $hndl->handle;
+    return undef if $noerr;
 
-    return $res;
+    raise_perm_exc("pool '$pool' does not exist");
 }
 
-# init_request - must be called before each RPC request
-sub init_request {
-    my ($self, %params) = @_;
-
-    PVE::Cluster::cfs_update();
+sub check_vm_perm {
+    my ($self, $user, $vmid, $pool, $privs, $any, $noerr) = @_;
 
-    my $userconfig; # we use this for regression tests
-    foreach my $p (keys %params) {
-	if ($p eq 'userconfig') {
-	    $userconfig = $params{$p};
-	} elsif ($p eq 'request_rec') {
-	    # pass Apache2::RequestRec
-	    $self->{request_rec} = $params{$p};
-	} elsif ($p eq 'params') {
-	    $self->{params} = $params{$p};
-	} else {
-	    die "unknown parameter '$p'";
-	}
-    }
+    my $cfg = $self->{user_cfg};
 
-    eval {
-	$self->{aclcache} = {};
-	if ($userconfig) {
-	    my $ucdata = PVE::Tools::file_get_contents($userconfig);
-	    my $cfg = PVE::AccessControl::parse_user_config($userconfig, $ucdata);
-	    $self->{user_cfg} = $cfg;
-	} else {
-	    my $ucvers = PVE::Cluster::cfs_file_version('user.cfg'); 
-	    if (!$self->{aclcache} || !defined($self->{aclversion}) || 
-		!defined($ucvers) ||  ($ucvers ne $self->{aclversion})) {
-		$self->{aclversion} = $ucvers;
-		my $cfg = PVE::Cluster::cfs_read_file('user.cfg');
-		$self->{user_cfg} = $cfg;
-	    }
-	}
-    };
-    if (my $err = $@) {
-	$self->{user_cfg} = {};
-	die "Unable to load access control list: $err";
+    if ($pool) {
+	return if $self->check_full($user, "/pool/$pool", $privs, $any, 1);
     }
-}
+    return $self->check_full($user, "/vms/$vmid", $privs, $any, $noerr);
+};
 
-sub set_client_ip {
-    my ($self, $ip) = @_;
+sub is_group_member {
+    my ($self, $group, $user) = @_;
 
-    $self->{client_ip} = $ip;
-}
+    my $cfg = $self->{user_cfg};
 
-sub get_client_ip {
-    my ($self) = @_;
+    return 0 if !$cfg->{groups}->{$group};
 
-    return $self->{client_ip};
+    return defined($cfg->{groups}->{$group}->{users}->{$user});
 }
 
-sub set_result_count {
-    my ($self, $count) = @_;
+sub filter_groups {
+    my ($self, $user, $privs, $any) = @_;
 
-    $self->{result_count} = $count;
-}
+    my $cfg = $self->{user_cfg};
 
-sub get_result_count {
-    my ($self) = @_;
+    my $groups = {};
+    foreach my $group (keys %{$cfg->{groups}}) {
+	my $path = "/access/groups/$group";
+	if ($self->check_full($user, $path, $privs, $any, 1)) {
+	    $groups->{$group} = $cfg->{groups}->{$group};
+	}
+    }
 
-    return $self->{result_count};
+    return $groups;
 }
 
-sub set_language {
-    my ($self, $lang) = @_;
-
-    # fixme: initialize I18N
+sub group_member_join {
+    my ($self, $grouplist) = @_;
 
-    $self->{language} = $lang;
-}
+    my $users = {};
 
-sub get_language {
-    my ($self) = @_;
+    my $cfg = $self->{user_cfg};
+    foreach my $group (@$grouplist) {
+	my $data = $cfg->{groups}->{$group};
+	next if !$data;
+	foreach my $user (keys %{$data->{users}}) {
+	    $users->{$user} = 1;
+	}
+    }
 
-    return $self->{language};
+    return $users;
 }
 
-sub set_user {
-    my ($self, $user) = @_;
+sub check_perm_modify {
+    my ($self, $username, $path, $noerr) = @_;
 
-    # fixme: get ACLs
+    return $self->check($username, '/access', [ 'Permissions.Modify' ], $noerr) if !$path;
 
-    $self->{user} = $user;
-}
-
-sub get_user {
-    my ($self) = @_;
-
-    die "user name not set\n" if !$self->{user};
+    my $testperms = [ 'Permissions.Modify' ];
+    if ($path =~ m|^/storage/.+$|) {
+	push @$testperms, 'Datastore.Allocate';
+    } elsif ($path =~ m|^/vms/.+$|) {
+	push @$testperms, 'VM.Allocate';
+    } elsif ($path =~ m|^/pool/.+$|) {
+	push @$testperms, 'Pool.Allocate';
+    }
 
-    return $self->{user};
+    return $self->check_any($username, $path, $testperms, $noerr);
 }
 
-# read/update list of active workers 
-# we move all finished tasks to the archive index,
-# but keep aktive and most recent task in the active file.
-# $nocheck ... consider $new_upid still running (avoid that
-# we try to read the reult to early.
-sub active_workers  {
-    my ($new_upid, $nocheck) = @_;
+sub exec_api2_perm_check {
+    my ($self, $check, $username, $param, $noerr) = @_;
 
-    my $lkfn = "/var/log/pve/tasks/.active.lock";
+    # syslog("info", "CHECK " . join(', ', @$check));
 
-    my $timeout = 10;
-
-    my $code = sub {
-
-	my $tasklist = PVE::INotify::read_file('active');
-
-	my @ta;
-	my $tlist = [];
-	my $thash = {}; # only list task once
-
-	my $check_task = sub {
-	    my ($task, $running) = @_;
-
-	    if ($running || PVE::ProcFSTools::check_process_running($task->{pid}, $task->{pstart})) {
-		push @$tlist, $task;
-	    } else {
-		delete $task->{pid};
-		push @ta, $task;
-	    }
-	    delete $task->{pstart};
-	};
-
-	foreach my $task (@$tasklist) {
-	    my $upid = $task->{upid};
-	    next if $thash->{$upid};
-	    $thash->{$upid} = $task;
-	    &$check_task($task);
-	}
+    my $ind = 0;
+    my $test = $check->[$ind++];
+    die "no permission test specified" if !$test;
 
-	if ($new_upid && !(my $task = $thash->{$new_upid})) {
-	    $task = PVE::Tools::upid_decode($new_upid);
-	    $task->{upid} = $new_upid;
-	    $thash->{$new_upid} = $task;
-	    &$check_task($task, $nocheck);
+    if ($test eq 'and') {
+	while (my $subcheck = $check->[$ind++]) {
+	    $self->exec_api2_perm_check($subcheck, $username, $param);
 	}
-
-
-	@ta = sort { $b->{starttime} cmp $a->{starttime} } @ta;
-
-	my $save = defined($new_upid);
-
-	foreach my $task (@ta) {
-	    next if $task->{endtime};
-	    $task->{endtime} = time();
-	    $task->{status} = PVE::Tools::upid_read_status($task->{upid});
-	    $save = 1;
+	return 1;
+    } elsif ($test eq 'or') {
+	while (my $subcheck = $check->[$ind++]) {
+	    return 1 if $self->exec_api2_perm_check($subcheck, $username, $param, 1);
 	}
-
-	my $archive = '';
-	my @arlist = ();
-	foreach my $task (@ta) {
-	    if (!$task->{saved}) {
-		$archive .= sprintf("$task->{upid} %08X $task->{status}\n", $task->{endtime});
-		$save = 1;
-		push @arlist, $task;
-		$task->{saved} = 1;
-	    }
+	return 0 if $noerr;
+	raise_perm_exc();
+    } elsif ($test eq 'perm') {
+	my ($t, $tmplpath, $privs, %options) = @$check;
+	my $any = $options{any};
+	die "missing parameters" if !($tmplpath && $privs);
+	my $require_param = $options{require_param};
+	if ($require_param && !defined($param->{$require_param})) {
+	    return 0 if $noerr;
+	    raise_perm_exc();
 	}
-
-	if ($archive) {
-	    my $size = 0;
-	    my $filename = "/var/log/pve/tasks/index";
-	    eval {
-		my $fh = IO::File->new($filename, '>>', 0644) ||
-		    die "unable to open file '$filename' - $!\n";
-		PVE::Tools::safe_print($filename, $fh, $archive);
-		$size = -s $fh;
-		close($fh) ||
-		    die "unable to close file '$filename' - $!\n";
-	    };
-	    my $err = $@;
-	    if ($err) {
-		syslog('err', $err);
-		foreach my $task (@arlist) { # mark as not saved
-		    $task->{saved} = 0;
+	my $path = PVE::Tools::template_replace($tmplpath, $param);
+	$path = PVE::AccessControl::normalize_path($path);
+	return $self->check_full($username, $path, $privs, $any, $noerr);
+    } elsif ($test eq 'userid-group') {
+	my $userid = $param->{userid};
+	my ($t, $privs, %options) = @$check;
+	return 0 if !$options{groups_param} && !$self->check_user_exist($userid, $noerr);
+	if (!$self->check_any($username, "/access/groups", $privs, 1)) {
+	    my $groups = $self->filter_groups($username, $privs, 1);
+	    if ($options{groups_param}) {
+		my @group_param = PVE::Tools::split_list($param->{groups});
+		raise_perm_exc("/access/groups, " . join("|", @$privs)) if !scalar(@group_param);
+		foreach my $pg (@group_param) {
+		    raise_perm_exc("/access/groups/$pg, " . join("|", @$privs))
+			if !$groups->{$pg};
+		}
+	    } else {
+		my $allowed_users = $self->group_member_join([keys %$groups]);
+		if (!$allowed_users->{$userid}) {
+		    return 0 if $noerr;
+		    raise_perm_exc();
 		}
-	    }
-	    my $maxsize = 50000; # about 1000 entries
-	    if ($size > $maxsize) {
-		rename($filename, "$filename.1");
 	    }
 	}
-
-	# we try to reduce the amount of data
-	# list all running tasks and task and a few others
-	# try to limit to 25 tasks
-	my $ctime = time();
-	my $max = 25 - scalar(@$tlist);
-        foreach my $task (@ta) {
-	    last if $max <= 0;
-	    push @$tlist, $task;
-	    $max--;
+	return 1;
+    } elsif ($test eq 'userid-param') {
+	my ($userid, undef, $realm) = PVE::AccessControl::verify_username($param->{userid});
+	my ($t, $subtest) = @$check;
+	die "missing parameters" if !$subtest;
+	if ($subtest eq 'self') {
+	    return 0 if !$self->check_user_exist($userid, $noerr);
+	    return 1 if $username eq $userid;
+	    return 0 if $noerr;
+	    raise_perm_exc();
+	} elsif ($subtest eq 'Realm.AllocateUser') {
+	    my $path =  "/access/realm/$realm";
+	    return $self->check($username, $path, ['Realm.AllocateUser'], $noerr);
+	} else {
+	    die "unknown userid-param test";
 	}
-
-	PVE::INotify::write_file('active', $tlist) if $save;
-
-	return $tlist;
-    };
-
-    my $res = PVE::Tools::lock_file($lkfn, $timeout, $code);
-    die $@ if $@;
-
-    return $res;
-}
-
-my $kill_process_group = sub {
-    my ($pid, $pstart) = @_;
-
-    # send kill to process group (negative pid)
-    my $kpid = -$pid;
-
-    # always send signal to all pgrp members
-    kill(15, $kpid); # send TERM signal
-
-    # give max 5 seconds to shut down
-    for (my $i = 0; $i < 5; $i++) {
-	return if !PVE::ProcFSTools::check_process_running($pid, $pstart);
-	sleep (1);
+     } elsif ($test eq 'perm-modify') {
+	my ($t, $tmplpath) = @$check;
+	my $path = PVE::Tools::template_replace($tmplpath, $param);
+	$path = PVE::AccessControl::normalize_path($path);
+	return $self->check_perm_modify($username, $path, $noerr);
+   } else {
+	die "unknown permission test";
     }
-       
-    # to be sure
-    kill(9, $kpid); 
 };
 
-sub check_worker {
-    my ($upid, $killit) = @_;
-
-    my $task = PVE::Tools::upid_decode($upid);
-
-    my $running = PVE::ProcFSTools::check_process_running($task->{pid}, $task->{pstart});
-
-    return 0 if !$running;
-
-    if ($killit) {
-	&$kill_process_group($task->{pid});
-	return 0;
-    }
-
-    return 1;
-}
-
-# start long running workers
-# STDIN is redirected to /dev/null
-# STDOUT,STDERR are redirected to the filename returned by upid_decode
-# NOTE: we simulate running in foreground if ($self->{type} eq 'cli')
-sub fork_worker {
-    my ($self, $dtype, $id, $user, $function) = @_;
-
-    $dtype = 'unknown' if !defined ($dtype);
-    $id = '' if !defined ($id);
+sub check_api2_permissions {
+    my ($self, $perm, $username, $param) = @_;
 
-    $user = 'root@pve' if !defined ($user);
+    return 1 if !$username && $perm->{user} eq 'world';
 
-    my $sync = $self->{type} eq 'cli' ? 1 : 0;
+    raise_perm_exc("user != null") if !$username;
 
-    local $SIG{INT} = 
-	local $SIG{QUIT} = 
-	local $SIG{PIPE} = 
-	local $SIG{TERM} = 'IGNORE';
+    return 1 if $username eq 'root@pam';
 
-    my $starttime = time ();
+    raise_perm_exc('user != root@pam') if !$perm;
 
-    my @psync = POSIX::pipe();
-    my @csync = POSIX::pipe();
+    return 1 if $perm->{user} && $perm->{user} eq 'all';
 
-    my $node = $self->{nodename};
+    return $self->exec_api2_perm_check($perm->{check}, $username, $param)
+	if $perm->{check};
 
-    my $cpid = fork();
-    die "unable to fork worker - $!" if !defined($cpid);
-
-    my $workerpuid = $cpid ? $cpid : $$;
-
-    my $pstart = PVE::ProcFSTools::read_proc_starttime($workerpuid) ||
-	die "unable to read process start time";
-
-    my $upid = PVE::Tools::upid_encode ({
-	node => $node, pid => $workerpuid, pstart => $pstart, 
-	starttime => $starttime, type => $dtype, id => $id, user => $user });
-
-    my $outfh;
-
-    if (!$cpid) { # child
-
-	$0 = "task $upid";
+    raise_perm_exc();
+}
 
-	$SIG{INT} = $SIG{QUIT} = $SIG{TERM} = sub { die "received interrupt\n"; };
+sub log_cluster_msg {
+    my ($self, $pri, $user, $msg) = @_;
 
-	$SIG{CHLD} = $SIG{PIPE} = 'DEFAULT';
+    PVE::Cluster::log_msg($pri, $user, $msg);
+}
 
-	# set sess/process group - we want to be able to kill the
-	# whole process group
-	POSIX::setsid(); 
+sub broadcast_tasklist {
+    my ($self, $tlist) = @_;
 
-	POSIX::close ($psync[0]);
-	POSIX::close ($csync[1]);
+    PVE::Cluster::broadcast_tasklist($tlist);
+}
 
-	$outfh = $sync ? $psync[1] : undef;
+# initialize environment - must be called once at program startup
+sub init {
+    my ($class, $type, %params) = @_;
 
-	eval {
-	    PVE::INotify::inotify_close();
+    $class = ref($class) || $class;
 
-	    if (my $atfork = $self->{atfork}) {
-		&$atfork();
-	    }
+    my $self = $class->SUPER::init($type, %params);
 
-	    # same algorythm as used inside SA
-	    # STDIN = /dev/null
-	    my $fd = fileno (STDIN);
+    $self->{user_cfg} = {};
+    $self->{aclcache} = {};
+    $self->{aclversion} = undef;
 
-	    if (!$sync) {
-		close STDIN;
-		POSIX::close(0) if $fd != 0;
+    return $self;
+};
 
-		die "unable to redirect STDIN - $!" 
-		    if !open(STDIN, "</dev/null");
 
-		$outfh = PVE::Tools::upid_open($upid);
-	    }
+# init_request - must be called before each RPC request
+sub init_request {
+    my ($self, %params) = @_;
 
+    PVE::Cluster::cfs_update();
 
-	    # redirect STDOUT
-	    $fd = fileno(STDOUT);
-	    close STDOUT;
-	    POSIX::close (1) if $fd != 1;
-
-	    die "unable to redirect STDOUT - $!" 
-		if !open(STDOUT, ">&", $outfh);
-
-	    STDOUT->autoflush (1);
-      
-	    #  redirect STDERR to STDOUT
-	    $fd = fileno (STDERR);
-	    close STDERR;
-	    POSIX::close(2) if $fd != 2;
-
-	    die "unable to redirect STDERR - $!" 
-		if !open(STDERR, ">&1");
-	    
-	    STDERR->autoflush(1);
-	};
-	if (my $err = $@) {
-	    my $msg =  "ERROR: $err";
-	    POSIX::write($psync[1], $msg, length ($msg));
-	    POSIX::close($psync[1]);
-	    POSIX::_exit(1); 
-	    kill(-9, $$); 
-	}
+    $self->{result_attributes} = {};
 
-	# sync with parent (signal that we are ready)
-	if ($sync) {
-	    print "$upid\n";
+    my $userconfig; # we use this for regression tests
+    foreach my $p (keys %params) {
+	if ($p eq 'userconfig') {
+	    $userconfig = $params{$p};
 	} else {
-	    POSIX::write($psync[1], $upid, length ($upid));
-	    POSIX::close($psync[1]);
-	}
-
-	my $readbuf = '';
-	# sync with parent (wait until parent is ready)
-	POSIX::read($csync[0], $readbuf, 4096);
-	die "parent setup error\n" if $readbuf ne 'OK';
-
-	if ($self->{type} eq 'ha') {
-	    print "task started by HA resource agent\n";
+	    die "unknown parameter '$p'";
 	}
-	eval { &$function($upid); };
-	my $err = $@;
-	if ($err) {
-	    chomp $err;
-	    $err =~ s/\n/ /mg;
-	    syslog('err', $err);
-	    print STDERR "TASK ERROR: $err\n";
-	    POSIX::_exit(-1); 
-	} else {
-	    print STDERR "TASK OK\n";
-	    POSIX::_exit(0);
-	} 
-	kill(-9, $$); 
-    }
-
-    # parent
-
-    POSIX::close ($psync[1]);
-    POSIX::close ($csync[0]);
-
-    my $readbuf = '';
-    # sync with child (wait until child starts)
-    POSIX::read($psync[0], $readbuf, 4096);
-
-    if (!$sync) {
-	POSIX::close($psync[0]);
-	&$register_worker($cpid, $user, $upid);
-    } else {
-	chomp $readbuf;
     }
 
     eval {
-	die "got no worker upid - start worker failed\n" if !$readbuf;
-
-	if ($readbuf =~ m/^ERROR:\s*(.+)$/m) {
-	    die "starting worker failed: $1\n";
-	}
-
-	if ($readbuf ne $upid) {
-	    die "got strange worker upid ('$readbuf' != '$upid') - start worker failed\n";
-	}
-
-	if ($sync) {
-	    $outfh = PVE::Tools::upid_open($upid);
+	$self->{aclcache} = {};
+	if ($userconfig) {
+	    my $ucdata = PVE::Tools::file_get_contents($userconfig);
+	    my $cfg = PVE::AccessControl::parse_user_config($userconfig, $ucdata);
+	    $self->{user_cfg} = $cfg;
+	} else {
+	    my $ucvers = PVE::Cluster::cfs_file_version('user.cfg');
+	    if (!$self->{aclcache} || !defined($self->{aclversion}) ||
+		!defined($ucvers) ||  ($ucvers ne $self->{aclversion})) {
+		$self->{aclversion} = $ucvers;
+		my $cfg = PVE::Cluster::cfs_read_file('user.cfg');
+		$self->{user_cfg} = $cfg;
+	    }
 	}
     };
-    my $err = $@;
-
-    if (!$err) {
-	my $msg = 'OK';
-	POSIX::write($csync[1], $msg, length ($msg));
-	POSIX::close($csync[1]);
-       
-    } else {
-	POSIX::close($csync[1]);
-	kill(-9, $cpid); # make sure it gets killed
-	die $err;
+    if (my $err = $@) {
+	$self->{user_cfg} = {};
+	die "Unable to load access control list: $err";
     }
+}
 
-    PVE::Cluster::log_msg('info', $user, "starting task $upid");
-
-    my $tlist = active_workers($upid, $sync);
-    PVE::Cluster::broadcast_tasklist($tlist);
-   
-    my $res = 0;
-
-    if ($sync) {
-	my $count;
-	my $outbuf = '';
-	my $int_count = 0;
-	eval {
-	    local $SIG{INT} = local $SIG{QUIT} = local $SIG{TERM} = sub { 
-		# always send signal to all pgrp members
-		my $kpid = -$cpid;
-		if ($int_count < 3) {
-		    kill(15, $kpid); # send TERM signal
-		} else {
-		    kill(9, $kpid); # send KILL signal
-		}
-		$int_count++;
-	    };
-	    local $SIG{PIPE} = sub { die "broken pipe\n"; };
-
-	    my $select = new IO::Select;    
-	    my $fh = IO::Handle->new_from_fd($psync[0], 'r');
-	    $select->add($fh);
-
-	    while ($select->count) {
-		my @handles = $select->can_read(1);
-		if (scalar(@handles)) {
-		    my $count = sysread ($handles[0], $readbuf, 4096);
-		    if (!defined ($count)) {
-			my $err = $!;
-			die "sync pipe read error: $err\n";
-		    }
-		    last if $count == 0; # eof
-
-		    $outbuf .= $readbuf;
-		    while ($outbuf =~ s/^(([^\010\r\n]*)(\r|\n|(\010)+|\r\n))//s) {
-			my $line = $1;
-			my $data = $2;
-			if ($data =~ m/^TASK OK$/) {
-			    # skip
-			} elsif ($data =~ m/^TASK ERROR: (.+)$/) {
-			    print STDERR "$1\n";
-			} else {
-			    print $line;
-			}
-			if ($outfh) {
-			    print $outfh $line;
-			    $outfh->flush();
-			}
-		    }
-		} else {
-		    # some commands daemonize without closing stdout
-		    last if !PVE::ProcFSTools::check_process_running($cpid);
-		}
-	    }
-	};
-	my $err = $@;
-
-	POSIX::close($psync[0]);
-
-	if ($outbuf) { # just to be sure
-	    print $outbuf;
-	    if ($outfh) {
-		print $outfh $outbuf;
-	    }
-	}
-
-	if ($err) {
-	    $err =~ s/\n/ /mg;
-	    print STDERR "$err\n";
-	    if ($outfh) {
-		print $outfh "TASK ERROR: $err\n";
-	    }
-	}
-
-	&$kill_process_group($cpid, $pstart); # make sure it gets killed
-
-	close($outfh);
+# hacks: to provide better backwards compatibiliy
 
-	waitpid($cpid, 0);
-	$res = $?;
-	&$log_task_result($upid, $user, $res);
-    }
+# old code uses PVE::RPCEnvironment::get();
+# new code should use PVE::RPCEnvironment->get();
+sub get {
+    return PVE::RESTEnvironment->get();
+}
 
-    return wantarray ? ($upid, $res) : $upid;
+# old code uses PVE::RPCEnvironment::is_worker();
+# new code should use PVE::RPCEnvironment->is_worker();
+sub is_worker {
+    return PVE::RESTEnvironment->is_worker();
 }
 
 1;