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use 5.006; use strict; use warnings; package CPAN::Meta::Validator; our $VERSION = '2.150010'; #pod =head1 SYNOPSIS #pod #pod my $struct = decode_json_file('META.json'); #pod #pod my $cmv = CPAN::Meta::Validator->new( $struct ); #pod #pod unless ( $cmv->is_valid ) { #pod my $msg = "Invalid META structure. Errors found:\n"; #pod $msg .= join( "\n", $cmv->errors ); #pod die $msg; #pod } #pod #pod =head1 DESCRIPTION #pod #pod This module validates a CPAN Meta structure against the version of the #pod the specification claimed in the C<meta-spec> field of the structure. #pod #pod =cut #--------------------------------------------------------------------------# # This code copied and adapted from Test::CPAN::Meta # by Barbie, <barbie@cpan.org> for Miss Barbell Productions, # L<http://www.missbarbell.co.uk> #--------------------------------------------------------------------------# #--------------------------------------------------------------------------# # Specification Definitions #--------------------------------------------------------------------------# my %known_specs = ( '1.4' => 'http://module-build.sourceforge.net/META-spec-v1.4.html', '1.3' => 'http://module-build.sourceforge.net/META-spec-v1.3.html', '1.2' => 'http://module-build.sourceforge.net/META-spec-v1.2.html', '1.1' => 'http://module-build.sourceforge.net/META-spec-v1.1.html', '1.0' => 'http://module-build.sourceforge.net/META-spec-v1.0.html' ); my %known_urls = map {$known_specs{$_} => $_} keys %known_specs; my $module_map1 = { 'map' => { ':key' => { name => \&module, value => \&exversion } } }; my $module_map2 = { 'map' => { ':key' => { name => \&module, value => \&version } } }; my $no_index_2 = { 'map' => { file => { list => { value => \&string } }, directory => { list => { value => \&string } }, 'package' => { list => { value => \&string } }, namespace => { list => { value => \&string } }, ':key' => { name => \&custom_2, value => \&anything }, } }; my $no_index_1_3 = { 'map' => { file => { list => { value => \&string } }, directory => { list => { value => \&string } }, 'package' => { list => { value => \&string } }, namespace => { list => { value => \&string } }, ':key' => { name => \&string, value => \&anything }, } }; my $no_index_1_2 = { 'map' => { file => { list => { value => \&string } }, dir => { list => { value => \&string } }, 'package' => { list => { value => \&string } }, namespace => { list => { value => \&string } }, ':key' => { name => \&string, value => \&anything }, } }; my $no_index_1_1 = { 'map' => { ':key' => { name => \&string, list => { value => \&string } }, } }; my $prereq_map = { map => { ':key' => { name => \&phase, 'map' => { ':key' => { name => \&relation, %$module_map1, }, }, } }, }; my %definitions = ( '2' => { # REQUIRED 'abstract' => { mandatory => 1, value => \&string }, 'author' => { mandatory => 1, list => { value => \&string } }, 'dynamic_config' => { mandatory => 1, value => \&boolean }, 'generated_by' => { mandatory => 1, value => \&string }, 'license' => { mandatory => 1, list => { value => \&license } }, 'meta-spec' => { mandatory => 1, 'map' => { version => { mandatory => 1, value => \&version}, url => { value => \&url }, ':key' => { name => \&custom_2, value => \&anything }, } }, 'name' => { mandatory => 1, value => \&string }, 'release_status' => { mandatory => 1, value => \&release_status }, 'version' => { mandatory => 1, value => \&version }, # OPTIONAL 'description' => { value => \&string }, 'keywords' => { list => { value => \&string } }, 'no_index' => $no_index_2, 'optional_features' => { 'map' => { ':key' => { name => \&string, 'map' => { description => { value => \&string }, prereqs => $prereq_map, ':key' => { name => \&custom_2, value => \&anything }, } } } }, 'prereqs' => $prereq_map, 'provides' => { 'map' => { ':key' => { name => \&module, 'map' => { file => { mandatory => 1, value => \&file }, version => { value => \&version }, ':key' => { name => \&custom_2, value => \&anything }, } } } }, 'resources' => { 'map' => { license => { list => { value => \&url } }, homepage => { value => \&url }, bugtracker => { 'map' => { web => { value => \&url }, mailto => { value => \&string}, ':key' => { name => \&custom_2, value => \&anything }, } }, repository => { 'map' => { web => { value => \&url }, url => { value => \&url }, type => { value => \&string }, ':key' => { name => \&custom_2, value => \&anything }, } }, ':key' => { value => \&string, name => \&custom_2 }, } }, # CUSTOM -- additional user defined key/value pairs # note we can only validate the key name, as the structure is user defined ':key' => { name => \&custom_2, value => \&anything }, }, '1.4' => { 'meta-spec' => { mandatory => 1, 'map' => { version => { mandatory => 1, value => \&version}, url => { mandatory => 1, value => \&urlspec }, ':key' => { name => \&string, value => \&anything }, }, }, 'name' => { mandatory => 1, value => \&string }, 'version' => { mandatory => 1, value => \&version }, 'abstract' => { mandatory => 1, value => \&string }, 'author' => { mandatory => 1, list => { value => \&string } }, 'license' => { mandatory => 1, value => \&license }, 'generated_by' => { mandatory => 1, value => \&string }, 'distribution_type' => { value => \&string }, 'dynamic_config' => { value => \&boolean }, 'requires' => $module_map1, 'recommends' => $module_map1, 'build_requires' => $module_map1, 'configure_requires' => $module_map1, 'conflicts' => $module_map2, 'optional_features' => { 'map' => { ':key' => { name => \&string, 'map' => { description => { value => \&string }, requires => $module_map1, recommends => $module_map1, build_requires => $module_map1, conflicts => $module_map2, ':key' => { name => \&string, value => \&anything }, } } } }, 'provides' => { 'map' => { ':key' => { name => \&module, 'map' => { file => { mandatory => 1, value => \&file }, version => { value => \&version }, ':key' => { name => \&string, value => \&anything }, } } } }, 'no_index' => $no_index_1_3, 'private' => $no_index_1_3, 'keywords' => { list => { value => \&string } }, 'resources' => { 'map' => { license => { value => \&url }, homepage => { value => \&url }, bugtracker => { value => \&url }, repository => { value => \&url }, ':key' => { value => \&string, name => \&custom_1 }, } }, # additional user defined key/value pairs # note we can only validate the key name, as the structure is user defined ':key' => { name => \&string, value => \&anything }, }, '1.3' => { 'meta-spec' => { mandatory => 1, 'map' => { version => { mandatory => 1, value => \&version}, url => { mandatory => 1, value => \&urlspec }, ':key' => { name => \&string, value => \&anything }, }, }, 'name' => { mandatory => 1, value => \&string }, 'version' => { mandatory => 1, value => \&version }, 'abstract' => { mandatory => 1, value => \&string }, 'author' => { mandatory => 1, list => { value => \&string } }, 'license' => { mandatory => 1, value => \&license }, 'generated_by' => { mandatory => 1, value => \&string }, 'distribution_type' => { value => \&string }, 'dynamic_config' => { value => \&boolean }, 'requires' => $module_map1, 'recommends' => $module_map1, 'build_requires' => $module_map1, 'conflicts' => $module_map2, 'optional_features' => { 'map' => { ':key' => { name => \&string, 'map' => { description => { value => \&string }, requires => $module_map1, recommends => $module_map1, build_requires => $module_map1, conflicts => $module_map2, ':key' => { name => \&string, value => \&anything }, } } } }, 'provides' => { 'map' => { ':key' => { name => \&module, 'map' => { file => { mandatory => 1, value => \&file }, version => { value => \&version }, ':key' => { name => \&string, value => \&anything }, } } } }, 'no_index' => $no_index_1_3, 'private' => $no_index_1_3, 'keywords' => { list => { value => \&string } }, 'resources' => { 'map' => { license => { value => \&url }, homepage => { value => \&url }, bugtracker => { value => \&url }, repository => { value => \&url }, ':key' => { value => \&string, name => \&custom_1 }, } }, # additional user defined key/value pairs # note we can only validate the key name, as the structure is user defined ':key' => { name => \&string, value => \&anything }, }, # v1.2 is misleading, it seems to assume that a number of fields where created # within v1.1, when they were created within v1.2. This may have been an # original mistake, and that a v1.1 was retro fitted into the timeline, when # v1.2 was originally slated as v1.1. But I could be wrong ;) '1.2' => { 'meta-spec' => { mandatory => 1, 'map' => { version => { mandatory => 1, value => \&version}, url => { mandatory => 1, value => \&urlspec }, ':key' => { name => \&string, value => \&anything }, }, }, 'name' => { mandatory => 1, value => \&string }, 'version' => { mandatory => 1, value => \&version }, 'license' => { mandatory => 1, value => \&license }, 'generated_by' => { mandatory => 1, value => \&string }, 'author' => { mandatory => 1, list => { value => \&string } }, 'abstract' => { mandatory => 1, value => \&string }, 'distribution_type' => { value => \&string }, 'dynamic_config' => { value => \&boolean }, 'keywords' => { list => { value => \&string } }, 'private' => $no_index_1_2, '$no_index' => $no_index_1_2, 'requires' => $module_map1, 'recommends' => $module_map1, 'build_requires' => $module_map1, 'conflicts' => $module_map2, 'optional_features' => { 'map' => { ':key' => { name => \&string, 'map' => { description => { value => \&string }, requires => $module_map1, recommends => $module_map1, build_requires => $module_map1, conflicts => $module_map2, ':key' => { name => \&string, value => \&anything }, } } } }, 'provides' => { 'map' => { ':key' => { name => \&module, 'map' => { file => { mandatory => 1, value => \&file }, version => { value => \&version }, ':key' => { name => \&string, value => \&anything }, } } } }, 'resources' => { 'map' => { license => { value => \&url }, homepage => { value => \&url }, bugtracker => { value => \&url }, repository => { value => \&url }, ':key' => { value => \&string, name => \&custom_1 }, } }, # additional user defined key/value pairs # note we can only validate the key name, as the structure is user defined ':key' => { name => \&string, value => \&anything }, }, # note that the 1.1 spec only specifies 'version' as mandatory '1.1' => { 'name' => { value => \&string }, 'version' => { mandatory => 1, value => \&version }, 'license' => { value => \&license }, 'generated_by' => { value => \&string }, 'license_uri' => { value => \&url }, 'distribution_type' => { value => \&string }, 'dynamic_config' => { value => \&boolean }, 'private' => $no_index_1_1, 'requires' => $module_map1, 'recommends' => $module_map1, 'build_requires' => $module_map1, 'conflicts' => $module_map2, # additional user defined key/value pairs # note we can only validate the key name, as the structure is user defined ':key' => { name => \&string, value => \&anything }, }, # note that the 1.0 spec doesn't specify optional or mandatory fields # but we will treat version as mandatory since otherwise META 1.0 is # completely arbitrary and pointless '1.0' => { 'name' => { value => \&string }, 'version' => { mandatory => 1, value => \&version }, 'license' => { value => \&license }, 'generated_by' => { value => \&string }, 'license_uri' => { value => \&url }, 'distribution_type' => { value => \&string }, 'dynamic_config' => { value => \&boolean }, 'requires' => $module_map1, 'recommends' => $module_map1, 'build_requires' => $module_map1, 'conflicts' => $module_map2, # additional user defined key/value pairs # note we can only validate the key name, as the structure is user defined ':key' => { name => \&string, value => \&anything }, }, ); #--------------------------------------------------------------------------# # Code #--------------------------------------------------------------------------# #pod =method new #pod #pod my $cmv = CPAN::Meta::Validator->new( $struct ) #pod #pod The constructor must be passed a metadata structure. #pod #pod =cut sub new { my ($class,$data) = @_; # create an attributes hash my $self = { 'data' => $data, 'spec' => eval { $data->{'meta-spec'}{'version'} } || "1.0", 'errors' => undef, }; # create the object return bless $self, $class; } #pod =method is_valid #pod #pod if ( $cmv->is_valid ) { #pod ... #pod } #pod #pod Returns a boolean value indicating whether the metadata provided #pod is valid. #pod #pod =cut sub is_valid { my $self = shift; my $data = $self->{data}; my $spec_version = $self->{spec}; $self->check_map($definitions{$spec_version},$data); return ! $self->errors; } #pod =method errors #pod #pod warn( join "\n", $cmv->errors ); #pod #pod Returns a list of errors seen during validation. #pod #pod =cut sub errors { my $self = shift; return () unless(defined $self->{errors}); return @{$self->{errors}}; } #pod =begin :internals #pod #pod =head2 Check Methods #pod #pod =over #pod #pod =item * #pod #pod check_map($spec,$data) #pod #pod Checks whether a map (or hash) part of the data structure conforms to the #pod appropriate specification definition. #pod #pod =item * #pod #pod check_list($spec,$data) #pod #pod Checks whether a list (or array) part of the data structure conforms to #pod the appropriate specification definition. #pod #pod =item * #pod #pod =back #pod #pod =cut my $spec_error = "Missing validation action in specification. " . "Must be one of 'map', 'list', or 'value'"; sub check_map { my ($self,$spec,$data) = @_; if(ref($spec) ne 'HASH') { $self->_error( "Unknown META specification, cannot validate." ); return; } if(ref($data) ne 'HASH') { $self->_error( "Expected a map structure from string or file." ); return; } for my $key (keys %$spec) { next unless($spec->{$key}->{mandatory}); next if(defined $data->{$key}); push @{$self->{stack}}, $key; $self->_error( "Missing mandatory field, '$key'" ); pop @{$self->{stack}}; } for my $key (keys %$data) { push @{$self->{stack}}, $key; if($spec->{$key}) { if($spec->{$key}{value}) { $spec->{$key}{value}->($self,$key,$data->{$key}); } elsif($spec->{$key}{'map'}) { $self->check_map($spec->{$key}{'map'},$data->{$key}); } elsif($spec->{$key}{'list'}) { $self->check_list($spec->{$key}{'list'},$data->{$key}); } else { $self->_error( "$spec_error for '$key'" ); } } elsif ($spec->{':key'}) { $spec->{':key'}{name}->($self,$key,$key); if($spec->{':key'}{value}) { $spec->{':key'}{value}->($self,$key,$data->{$key}); } elsif($spec->{':key'}{'map'}) { $self->check_map($spec->{':key'}{'map'},$data->{$key}); } elsif($spec->{':key'}{'list'}) { $self->check_list($spec->{':key'}{'list'},$data->{$key}); } else { $self->_error( "$spec_error for ':key'" ); } } else { $self->_error( "Unknown key, '$key', found in map structure" ); } pop @{$self->{stack}}; } } sub check_list { my ($self,$spec,$data) = @_; if(ref($data) ne 'ARRAY') { $self->_error( "Expected a list structure" ); return; } if(defined $spec->{mandatory}) { if(!defined $data->[0]) { $self->_error( "Missing entries from mandatory list" ); } } for my $value (@$data) { push @{$self->{stack}}, $value || "<undef>"; if(defined $spec->{value}) { $spec->{value}->($self,'list',$value); } elsif(defined $spec->{'map'}) { $self->check_map($spec->{'map'},$value); } elsif(defined $spec->{'list'}) { $self->check_list($spec->{'list'},$value); } elsif ($spec->{':key'}) { $self->check_map($spec,$value); } else { $self->_error( "$spec_error associated with '$self->{stack}[-2]'" ); } pop @{$self->{stack}}; } } #pod =head2 Validator Methods #pod #pod =over #pod #pod =item * #pod #pod header($self,$key,$value) #pod #pod Validates that the header is valid. #pod #pod Note: No longer used as we now read the data structure, not the file. #pod #pod =item * #pod #pod url($self,$key,$value) #pod #pod Validates that a given value is in an acceptable URL format #pod #pod =item * #pod #pod urlspec($self,$key,$value) #pod #pod Validates that the URL to a META specification is a known one. #pod #pod =item * #pod #pod string_or_undef($self,$key,$value) #pod #pod Validates that the value is either a string or an undef value. Bit of a #pod catchall function for parts of the data structure that are completely user #pod defined. #pod #pod =item * #pod #pod string($self,$key,$value) #pod #pod Validates that a string exists for the given key. #pod #pod =item * #pod #pod file($self,$key,$value) #pod #pod Validate that a file is passed for the given key. This may be made more #pod thorough in the future. For now it acts like \&string. #pod #pod =item * #pod #pod exversion($self,$key,$value) #pod #pod Validates a list of versions, e.g. '<= 5, >=2, ==3, !=4, >1, <6, 0'. #pod #pod =item * #pod #pod version($self,$key,$value) #pod #pod Validates a single version string. Versions of the type '5.8.8' and '0.00_00' #pod are both valid. A leading 'v' like 'v1.2.3' is also valid. #pod #pod =item * #pod #pod boolean($self,$key,$value) #pod #pod Validates for a boolean value: a defined value that is either "1" or "0" or #pod stringifies to those values. #pod #pod =item * #pod #pod license($self,$key,$value) #pod #pod Validates that a value is given for the license. Returns 1 if an known license #pod type, or 2 if a value is given but the license type is not a recommended one. #pod #pod =item * #pod #pod custom_1($self,$key,$value) #pod #pod Validates that the given key is in CamelCase, to indicate a user defined #pod keyword and only has characters in the class [-_a-zA-Z]. In version 1.X #pod of the spec, this was only explicitly stated for 'resources'. #pod #pod =item * #pod #pod custom_2($self,$key,$value) #pod #pod Validates that the given key begins with 'x_' or 'X_', to indicate a user #pod defined keyword and only has characters in the class [-_a-zA-Z] #pod #pod =item * #pod #pod identifier($self,$key,$value) #pod #pod Validates that key is in an acceptable format for the META specification, #pod for an identifier, i.e. any that matches the regular expression #pod qr/[a-z][a-z_]/i. #pod #pod =item * #pod #pod module($self,$key,$value) #pod #pod Validates that a given key is in an acceptable module name format, e.g. #pod 'Test::CPAN::Meta::Version'. #pod #pod =back #pod #pod =end :internals #pod #pod =cut sub header { my ($self,$key,$value) = @_; if(defined $value) { return 1 if($value && $value =~ /^--- #YAML:1.0/); } $self->_error( "file does not have a valid YAML header." ); return 0; } sub release_status { my ($self,$key,$value) = @_; if(defined $value) { my $version = $self->{data}{version} || ''; if ( $version =~ /_/ ) { return 1 if ( $value =~ /\A(?:testing|unstable)\z/ ); $self->_error( "'$value' for '$key' is invalid for version '$version'" ); } else { return 1 if ( $value =~ /\A(?:stable|testing|unstable)\z/ ); $self->_error( "'$value' for '$key' is invalid" ); } } else { $self->_error( "'$key' is not defined" ); } return 0; } # _uri_split taken from URI::Split by Gisle Aas, Copyright 2003 sub _uri_split { return $_[0] =~ m,(?:([^:/?#]+):)?(?://([^/?#]*))?([^?#]*)(?:\?([^#]*))?(?:#(.*))?,; } sub url { my ($self,$key,$value) = @_; if(defined $value) { my ($scheme, $auth, $path, $query, $frag) = _uri_split($value); unless ( defined $scheme && length $scheme ) { $self->_error( "'$value' for '$key' does not have a URL scheme" ); return 0; } unless ( defined $auth && length $auth ) { $self->_error( "'$value' for '$key' does not have a URL authority" ); return 0; } return 1; } $value ||= ''; $self->_error( "'$value' for '$key' is not a valid URL." ); return 0; } sub urlspec { my ($self,$key,$value) = @_; if(defined $value) { return 1 if($value && $known_specs{$self->{spec}} eq $value); if($value && $known_urls{$value}) { $self->_error( 'META specification URL does not match version' ); return 0; } } $self->_error( 'Unknown META specification' ); return 0; } sub anything { return 1 } sub string { my ($self,$key,$value) = @_; if(defined $value) { return 1 if($value || $value =~ /^0$/); } $self->_error( "value is an undefined string" ); return 0; } sub string_or_undef { my ($self,$key,$value) = @_; return 1 unless(defined $value); return 1 if($value || $value =~ /^0$/); $self->_error( "No string defined for '$key'" ); return 0; } sub file { my ($self,$key,$value) = @_; return 1 if(defined $value); $self->_error( "No file defined for '$key'" ); return 0; } sub exversion { my ($self,$key,$value) = @_; if(defined $value && ($value || $value =~ /0/)) { my $pass = 1; for(split(",",$value)) { $self->version($key,$_) or ($pass = 0); } return $pass; } $value = '<undef>' unless(defined $value); $self->_error( "'$value' for '$key' is not a valid version." ); return 0; } sub version { my ($self,$key,$value) = @_; if(defined $value) { return 0 unless($value || $value =~ /0/); return 1 if($value =~ /^\s*((<|<=|>=|>|!=|==)\s*)?v?\d+((\.\d+((_|\.)\d+)?)?)/); } else { $value = '<undef>'; } $self->_error( "'$value' for '$key' is not a valid version." ); return 0; } sub boolean { my ($self,$key,$value) = @_; if(defined $value) { return 1 if($value =~ /^(0|1)$/); } else { $value = '<undef>'; } $self->_error( "'$value' for '$key' is not a boolean value." ); return 0; } my %v1_licenses = ( 'perl' => 'http://dev.perl.org/licenses/', 'gpl' => 'http://www.opensource.org/licenses/gpl-license.php', 'apache' => 'http://apache.org/licenses/LICENSE-2.0', 'artistic' => 'http://opensource.org/licenses/artistic-license.php', 'artistic_2' => 'http://opensource.org/licenses/artistic-license-2.0.php', 'lgpl' => 'http://www.opensource.org/licenses/lgpl-license.php', 'bsd' => 'http://www.opensource.org/licenses/bsd-license.php', 'gpl' => 'http://www.opensource.org/licenses/gpl-license.php', 'mit' => 'http://opensource.org/licenses/mit-license.php', 'mozilla' => 'http://opensource.org/licenses/mozilla1.1.php', 'open_source' => undef, 'unrestricted' => undef, 'restrictive' => undef, 'unknown' => undef, ); my %v2_licenses = map { $_ => 1 } qw( agpl_3 apache_1_1 apache_2_0 artistic_1 artistic_2 bsd freebsd gfdl_1_2 gfdl_1_3 gpl_1 gpl_2 gpl_3 lgpl_2_1 lgpl_3_0 mit mozilla_1_0 mozilla_1_1 openssl perl_5 qpl_1_0 ssleay sun zlib open_source restricted unrestricted unknown ); sub license { my ($self,$key,$value) = @_; my $licenses = $self->{spec} < 2 ? \%v1_licenses : \%v2_licenses; if(defined $value) { return 1 if($value && exists $licenses->{$value}); } else { $value = '<undef>'; } $self->_error( "License '$value' is invalid" ); return 0; } sub custom_1 { my ($self,$key) = @_; if(defined $key) { # a valid user defined key should be alphabetic # and contain at least one capital case letter. return 1 if($key && $key =~ /^[_a-z]+$/i && $key =~ /[A-Z]/); } else { $key = '<undef>'; } $self->_error( "Custom resource '$key' must be in CamelCase." ); return 0; } sub custom_2 { my ($self,$key) = @_; if(defined $key) { return 1 if($key && $key =~ /^x_/i); # user defined } else { $key = '<undef>'; } $self->_error( "Custom key '$key' must begin with 'x_' or 'X_'." ); return 0; } sub identifier { my ($self,$key) = @_; if(defined $key) { return 1 if($key && $key =~ /^([a-z][_a-z]+)$/i); # spec 2.0 defined } else { $key = '<undef>'; } $self->_error( "Key '$key' is not a legal identifier." ); return 0; } sub module { my ($self,$key) = @_; if(defined $key) { return 1 if($key && $key =~ /^[A-Za-z0-9_]+(::[A-Za-z0-9_]+)*$/); } else { $key = '<undef>'; } $self->_error( "Key '$key' is not a legal module name." ); return 0; } my @valid_phases = qw/ configure build test runtime develop /; sub phase { my ($self,$key) = @_; if(defined $key) { return 1 if( length $key && grep { $key eq $_ } @valid_phases ); return 1 if $key =~ /x_/i; } else { $key = '<undef>'; } $self->_error( "Key '$key' is not a legal phase." ); return 0; } my @valid_relations = qw/ requires recommends suggests conflicts /; sub relation { my ($self,$key) = @_; if(defined $key) { return 1 if( length $key && grep { $key eq $_ } @valid_relations ); return 1 if $key =~ /x_/i; } else { $key = '<undef>'; } $self->_error( "Key '$key' is not a legal prereq relationship." ); return 0; } sub _error { my $self = shift; my $mess = shift; $mess .= ' ('.join(' -> ',@{$self->{stack}}).')' if($self->{stack}); $mess .= " [Validation: $self->{spec}]"; push @{$self->{errors}}, $mess; } 1; # ABSTRACT: validate CPAN distribution metadata structures =pod =encoding UTF-8 =head1 NAME CPAN::Meta::Validator - validate CPAN distribution metadata structures =head1 VERSION version 2.150010 =head1 SYNOPSIS my $struct = decode_json_file('META.json'); my $cmv = CPAN::Meta::Validator->new( $struct ); unless ( $cmv->is_valid ) { my $msg = "Invalid META structure. Errors found:\n"; $msg .= join( "\n", $cmv->errors ); die $msg; } =head1 DESCRIPTION This module validates a CPAN Meta structure against the version of the the specification claimed in the C<meta-spec> field of the structure. =head1 METHODS =head2 new my $cmv = CPAN::Meta::Validator->new( $struct ) The constructor must be passed a metadata structure. =head2 is_valid if ( $cmv->is_valid ) { ... } Returns a boolean value indicating whether the metadata provided is valid. =head2 errors warn( join "\n", $cmv->errors ); Returns a list of errors seen during validation. =begin :internals =head2 Check Methods =over =item * check_map($spec,$data) Checks whether a map (or hash) part of the data structure conforms to the appropriate specification definition. =item * check_list($spec,$data) Checks whether a list (or array) part of the data structure conforms to the appropriate specification definition. =item * =back =head2 Validator Methods =over =item * header($self,$key,$value) Validates that the header is valid. Note: No longer used as we now read the data structure, not the file. =item * url($self,$key,$value) Validates that a given value is in an acceptable URL format =item * urlspec($self,$key,$value) Validates that the URL to a META specification is a known one. =item * string_or_undef($self,$key,$value) Validates that the value is either a string or an undef value. Bit of a catchall function for parts of the data structure that are completely user defined. =item * string($self,$key,$value) Validates that a string exists for the given key. =item * file($self,$key,$value) Validate that a file is passed for the given key. This may be made more thorough in the future. For now it acts like \&string. =item * exversion($self,$key,$value) Validates a list of versions, e.g. '<= 5, >=2, ==3, !=4, >1, <6, 0'. =item * version($self,$key,$value) Validates a single version string. Versions of the type '5.8.8' and '0.00_00' are both valid. A leading 'v' like 'v1.2.3' is also valid. =item * boolean($self,$key,$value) Validates for a boolean value: a defined value that is either "1" or "0" or stringifies to those values. =item * license($self,$key,$value) Validates that a value is given for the license. Returns 1 if an known license type, or 2 if a value is given but the license type is not a recommended one. =item * custom_1($self,$key,$value) Validates that the given key is in CamelCase, to indicate a user defined keyword and only has characters in the class [-_a-zA-Z]. In version 1.X of the spec, this was only explicitly stated for 'resources'. =item * custom_2($self,$key,$value) Validates that the given key begins with 'x_' or 'X_', to indicate a user defined keyword and only has characters in the class [-_a-zA-Z] =item * identifier($self,$key,$value) Validates that key is in an acceptable format for the META specification, for an identifier, i.e. any that matches the regular expression qr/[a-z][a-z_]/i. =item * module($self,$key,$value) Validates that a given key is in an acceptable module name format, e.g. 'Test::CPAN::Meta::Version'. =back =end :internals =for Pod::Coverage anything boolean check_list custom_1 custom_2 exversion file identifier license module phase relation release_status string string_or_undef url urlspec version header check_map =head1 BUGS Please report any bugs or feature using the CPAN Request Tracker. Bugs can be submitted through the web interface at L<http://rt.cpan.org/Dist/Display.html?Queue=CPAN-Meta> When submitting a bug or request, please include a test-file or a patch to an existing test-file that illustrates the bug or desired feature. =head1 AUTHORS =over 4 =item * David Golden <dagolden@cpan.org> =item * Ricardo Signes <rjbs@cpan.org> =item * Adam Kennedy <adamk@cpan.org> =back =head1 COPYRIGHT AND LICENSE This software is copyright (c) 2010 by David Golden, Ricardo Signes, Adam Kennedy and Contributors. This is free software; you can redistribute it and/or modify it under the same terms as the Perl 5 programming language system itself. =cut __END__ # vim: ts=2 sts=2 sw=2 et :