1 package PVE
::RESTHandler
;
4 no strict
'refs'; # our autoload requires this
7 use PVE
::Exception
qw(raise raise_param_exc);
10 use HTTP
::Status
qw(:constants :is status_message);
14 my $method_registry = {};
15 my $method_by_name = {};
16 my $method_path_lookup = {};
18 our $AUTOLOAD; # it's a package global
20 sub api_clone_schema
{
24 my $ref = ref($schema);
25 die "not a HASH reference" if !($ref && $ref eq 'HASH');
27 foreach my $k (keys %$schema) {
28 my $d = $schema->{$k};
29 if ($k ne 'properties') {
30 $res->{$k} = ref($d) ? clone
($d) : $d;
33 # convert indexed parameters like -net\d+ to -net[n]
34 foreach my $p (keys %$d) {
36 if ($p =~ m/^([a-z]+)(\d+)$/) {
43 $res->{$k}->{$p} = ref($pd) ? clone
($pd) : $pd;
51 my ($tree, $index, $class, $prefix) = @_;
53 $prefix = '' if !$prefix;
55 my $ma = $method_registry->{$class};
57 foreach my $info (@$ma) {
59 my $path = "$prefix/$info->{path}";
62 if ($info->{subclass
}) {
63 api_dump_full
($tree, $index, $info->{subclass
}, $path);
67 # check if method is unique
69 $realpath =~ s/\{[^\}]+\}/\{\}/g;
70 my $fullpath = "$info->{method} $realpath";
71 die "duplicate path '$realpath'" if $index->{$fullpath};
72 $index->{$fullpath} = $info;
78 foreach my $dir (split('/', $path)) {
81 $res = (grep { $_->{text
} eq $dir } @$treedir)[0];
83 $res->{children
} = [] if !$res->{children
};
84 $treedir = $res->{children
};
92 $treedir = $res->{children
};
98 foreach my $k (keys %$info) {
99 next if $k eq 'code' || $k eq "match_name" || $k eq "match_re" ||
104 if ($k eq 'parameters') {
105 $data->{$k} = api_clone_schema
($d);
108 $data->{$k} = ref($d) ? clone
($d) : $d;
111 $res->{info
}->{$info->{method}} = $data;
117 sub api_dump_cleanup_tree
{
120 foreach my $rec (@$tree) {
121 delete $rec->{children
} if $rec->{children
} && !scalar(@{$rec->{children
}});
122 if ($rec->{children
}) {
124 api_dump_cleanup_tree
($rec->{children
});
133 my ($class, $prefix) = @_;
138 api_dump_full
($tree, $index, $class);
139 api_dump_cleanup_tree
($tree);
143 sub validate_method_schemas
{
145 foreach my $class (keys %$method_registry) {
146 my $ma = $method_registry->{$class};
148 foreach my $info (@$ma) {
149 PVE
::JSONSchema
::validate_method_info
($info);
154 sub register_method
{
155 my ($self, $info) = @_;
163 if ($info->{subclass
}) {
164 $errprefix = "register subclass $info->{subclass} at ${self}/$info->{path} -";
165 $method = 'SUBCLASS';
167 $errprefix = "register method ${self}/$info->{path} -";
168 $info->{method} = 'GET' if !$info->{method};
169 $method = $info->{method};
172 $method_path_lookup->{$self} = {} if !defined($method_path_lookup->{$self});
173 my $path_lookup = $method_path_lookup->{$self};
175 die "$errprefix no path" if !defined($info->{path
});
177 foreach my $comp (split(/\/+/, $info->{path
})) {
178 die "$errprefix path compoment has zero length\n" if $comp eq '';
180 if ($comp =~ m/^\{(\w+)(:(.*))?\}$/) {
182 $regex = $3 ?
$3 : '\S+';
183 push @$match_re, $regex;
184 push @$match_name, $name;
187 push @$match_re, $name;
188 push @$match_name, undef;
192 $path_lookup->{regex
} = {} if !defined($path_lookup->{regex
});
194 my $old_name = $path_lookup->{regex
}->{match_name
};
195 die "$errprefix found changed regex match name\n"
196 if defined($old_name) && ($old_name ne $name);
197 my $old_re = $path_lookup->{regex
}->{match_re
};
198 die "$errprefix found changed regex\n"
199 if defined($old_re) && ($old_re ne $regex);
200 $path_lookup->{regex
}->{match_name
} = $name;
201 $path_lookup->{regex
}->{match_re
} = $regex;
203 die "$errprefix path match error - regex and fixed items\n"
204 if defined($path_lookup->{folders
});
206 $path_lookup = $path_lookup->{regex
};
209 $path_lookup->{folders
}->{$name} = {} if !defined($path_lookup->{folders
}->{$name});
211 die "$errprefix path match error - regex and fixed items\n"
212 if defined($path_lookup->{regex
});
214 $path_lookup = $path_lookup->{folders
}->{$name};
218 die "$errprefix duplicate method definition\n"
219 if defined($path_lookup->{$method});
221 if ($method eq 'SUBCLASS') {
222 foreach my $m (qw(GET PUT POST DELETE)) {
223 die "$errprefix duplicate method definition SUBCLASS and $m\n" if $path_lookup->{$m};
226 $path_lookup->{$method} = $info;
228 $info->{match_re
} = $match_re;
229 $info->{match_name
} = $match_name;
231 $method_by_name->{$self} = {} if !defined($method_by_name->{$self});
234 die "$errprefix method name already defined\n"
235 if defined($method_by_name->{$self}->{$info->{name
}});
237 $method_by_name->{$self}->{$info->{name
}} = $info;
240 push @{$method_registry->{$self}}, $info;
243 sub register_page_formatter
{
244 my ($self, %config) = @_;
246 my $format = $config{format
} ||
247 die "missing format";
249 my $path = $config{path
} ||
252 my $method = $config{method} ||
253 die "missing method";
255 my $code = $config{code
} ||
256 die "missing formatter code";
259 my ($handler, $info) = $self->find_handler($method, $path, $uri_param);
260 die "unabe to find handler for '$method: $path'" if !($handler && $info);
262 die "duplicate formatter for '$method: $path'"
263 if $info->{formatter
} && $info->{formatter
}->{$format};
265 $info->{formatter
}->{$format} = $code;
268 sub DESTROY
{}; # avoid problems with autoload
273 # also see "man perldiag"
276 (my $method = $sub) =~ s/.*:://;
278 my $info = $this->map_method_by_name($method);
282 return $self->handle($info, @_);
287 sub method_attributes
{
290 return $method_registry->{$self};
293 sub map_method_by_name
{
294 my ($self, $name) = @_;
296 my $info = $method_by_name->{$self}->{$name};
297 die "no such method '${self}::$name'\n" if !$info;
302 sub map_path_to_methods
{
303 my ($class, $stack, $uri_param, $pathmatchref) = @_;
305 my $path_lookup = $method_path_lookup->{$class};
307 # Note: $pathmatchref can be used to obtain path including
308 # uri patterns like '/cluster/firewall/groups/{group}'.
309 # Used by pvesh to display help
310 if (defined($pathmatchref)) {
311 $$pathmatchref = '' if !$$pathmatchref;
314 while (defined(my $comp = shift @$stack)) {
315 return undef if !$path_lookup; # not registerd?
316 if ($path_lookup->{regex
}) {
317 my $name = $path_lookup->{regex
}->{match_name
};
318 my $regex = $path_lookup->{regex
}->{match_re
};
320 return undef if $comp !~ m/^($regex)$/;
321 $uri_param->{$name} = $1;
322 $path_lookup = $path_lookup->{regex
};
323 $$pathmatchref .= '/{' . $name . '}' if defined($pathmatchref);
324 } elsif ($path_lookup->{folders
}) {
325 $path_lookup = $path_lookup->{folders
}->{$comp};
326 $$pathmatchref .= '/' . $comp if defined($pathmatchref);
328 die "internal error";
331 return undef if !$path_lookup;
333 if (my $info = $path_lookup->{SUBCLASS
}) {
334 $class = $info->{subclass
};
336 my $fd = $info->{fragmentDelimiter
};
339 # we only support the empty string '' (match whole URI)
340 die "unsupported fragmentDelimiter '$fd'"
343 $stack = [ join ('/', @$stack) ] if scalar(@$stack) > 1;
345 $path_lookup = $method_path_lookup->{$class};
349 return undef if !$path_lookup;
351 return ($class, $path_lookup);
355 my ($class, $method, $path, $uri_param, $pathmatchref) = @_;
357 my $stack = [ grep { length($_) > 0 } split('\/+' , $path)]; # skip empty fragments
359 my ($handler_class, $path_info);
361 ($handler_class, $path_info) = $class->map_path_to_methods($stack, $uri_param, $pathmatchref);
364 syslog
('err', $err) if $err;
366 return undef if !($handler_class && $path_info);
368 my $method_info = $path_info->{$method};
370 return undef if !$method_info;
372 return ($handler_class, $method_info);
376 my ($self, $info, $param) = @_;
378 my $func = $info->{code
};
380 if (!($info->{name
} && $func)) {
381 raise
("Method lookup failed ('$info->{name}')\n",
382 code
=> HTTP_INTERNAL_SERVER_ERROR
);
385 if (my $schema = $info->{parameters
}) {
386 # warn "validate ". Dumper($param}) . "\n" . Dumper($schema);
387 PVE
::JSONSchema
::validate
($param, $schema);
388 # untaint data (already validated)
389 my $extra = delete $param->{'extra-args'};
390 while (my ($key, $val) = each %$param) {
391 ($param->{$key}) = $val =~ /^(.*)$/s;
393 $param->{'extra-args'} = [map { /^(.*)$/ } @$extra] if $extra;
396 my $result = &$func($param);
398 # todo: this is only to be safe - disable?
399 if (my $schema = $info->{returns
}) {
400 PVE
::JSONSchema
::validate
($result, $schema, "Result verification failed\n");
406 # generate usage information for command line tools
408 # $name ... the name of the method
409 # $prefix ... usually something like "$exename $cmd" ('pvesm add')
410 # $arg_param ... list of parameters we want to get as ordered arguments
411 # on the command line (or single parameter name for lists)
412 # $fixed_param ... do not generate and info about those parameters
414 # 'long' ... default (list all options)
415 # 'short' ... command line only (one line)
416 # 'full' ... also include description
417 # 'asciidoc' ... generate asciidoc for man pages (like 'full')
418 # $hidepw ... hide password option (use this if you provide a read passwork callback)
420 my ($self, $name, $prefix, $arg_param, $fixed_param, $format, $hidepw) = @_;
422 $format = 'long' if !$format;
424 my $info = $self->map_method_by_name($name);
425 my $schema = $info->{parameters
};
426 my $prop = $schema->{properties
};
434 $arg_param = [ $arg_param ] if $arg_param && !ref($arg_param);
436 foreach my $p (@$arg_param) {
437 next if !$prop->{$p}; # just to be sure
438 my $pd = $prop->{$p};
441 $args .= " " if $args;
442 if ($pd->{format
} && $pd->{format
} =~ m/-list/) {
445 $args .= $pd->{optional
} ?
"[<$p>]" : "<$p>";
449 my $get_prop_descr = sub {
450 my ($k, $display_name) = @_;
452 my $phash = $prop->{$k};
456 my $descr = $phash->{description
} || "no description available";
459 my $type = PVE
::PodParser
::schema_get_type_text
($phash);
461 if ($hidepw && $k eq 'password') {
465 if ($format eq 'asciidoc') {
466 $res .= "`$display_name` `$type` ";
467 if (defined(my $dv = $phash->{default})) {
468 $res .= "(default=`$dv`)";
471 $res .= Text
::Wrap
::wrap
('', '', ($descr)) . "\n";
473 if (my $req = $phash->{requires
}) {
474 my $tmp .= ref($req) ?
join(', ', @$req) : $req;
475 $res .= "+\nNOTE: Requires option(s): `$tmp`\n";
480 if (defined(my $dv = $phash->{default})) {
481 $defaulttxt = " (default=$dv)";
483 my $tmp = sprintf " %-10s %s$defaulttxt\n", $display_name, "$type";
486 $res .= Text
::Wrap
::wrap
('', $indend, ($tmp));
488 $res .= Text
::Wrap
::wrap
($indend, $indend, ($descr)) . "\n\n";
490 if (my $req = $phash->{requires
}) {
491 my $tmp = "Requires option(s): ";
492 $tmp .= ref($req) ?
join(', ', @$req) : $req;
493 $res .= Text
::Wrap
::wrap
($indend, $indend, ($tmp)). "\n\n";
501 foreach my $k (@$arg_param) {
502 next if defined($fixed_param->{$k}); # just to be sure
503 next if !$prop->{$k}; # just to be sure
504 $argdescr .= &$get_prop_descr($k, "<$k>");
507 my $idx_param = {}; # -vlan\d+ -scsi\d+
510 foreach my $k (sort keys %$prop) {
511 next if $arg_hash->{$k};
512 next if defined($fixed_param->{$k});
514 my $type = $prop->{$k}->{type
} || 'string';
516 next if $hidepw && ($k eq 'password') && !$prop->{$k}->{optional
};
519 if ($k =~ m/^([a-z]+)(\d+)$/) {
521 next if $idx_param->{$name};
522 $idx_param->{$name} = 1;
523 $base = "${name}[n]";
526 $opts .= &$get_prop_descr($k, "-$base");
528 if (!$prop->{$k}->{optional
}) {
529 $args .= " " if $args;
530 $args .= "-$base <$type>"
534 if ($format eq 'asciidoc') {
535 $out .= "*${prefix}*";
536 $out .= " `$args`" if $args;
537 $out .= $opts ?
" `[OPTIONS]`\n" : "\n";
539 $out .= "USAGE: " if $format ne 'short';
540 $out .= "$prefix $args";
541 $out .= $opts ?
" [OPTIONS]\n" : "\n";
544 return $out if $format eq 'short';
546 if ($info->{description
}) {
547 if ($format eq 'asciidoc') {
548 my $desc = Text
::Wrap
::wrap
('', '', ($info->{description
}));
549 $out .= "\n$desc\n\n";
550 } elsif ($format eq 'full') {
551 my $desc = Text
::Wrap
::wrap
(' ', ' ', ($info->{description
}));
552 $out .= "\n$desc\n\n";
556 $out .= $argdescr if $argdescr;
558 $out .= $opts if $opts;
564 my ($self, $prefix, $name, $args, $arg_param, $fixed_param, $pwcallback) = @_;
566 my $info = $self->map_method_by_name($name);
570 my $param = PVE
::JSONSchema
::get_options
($info->{parameters
}, $args, $arg_param, $fixed_param, $pwcallback);
571 $res = $self->handle($info, $param);
576 die $err if !$ec || $ec ne "PVE::Exception" || !$err->is_param_exc();
578 $err->{usage
} = $self->usage_str($name, $prefix, $arg_param, $fixed_param, 'short', $pwcallback);
587 # note: this modifies the original hash by adding the id property
589 my ($hash, $idprop) = @_;
592 return $res if !$hash;
594 foreach my $k (keys %$hash) {
595 $hash->{$k}->{$idprop} = $k;
596 push @$res, $hash->{$k};