package HTTP::Status; use strict; require 5.002; # because we use prototypes use vars qw(@ISA @EXPORT @EXPORT_OK %EXPORT_TAGS $VERSION); require Exporter; @ISA = qw(Exporter); @EXPORT = qw(is_info is_success is_redirect is_error status_message); @EXPORT_OK = qw(is_client_error is_server_error); $VERSION = "6.03"; # Note also addition of mnemonics to @EXPORT below # Unmarked codes are from RFC 2616 # See also: http://en.wikipedia.org/wiki/List_of_HTTP_status_codes my %StatusCode = ( 100 => 'Continue', 101 => 'Switching Protocols', 102 => 'Processing', # RFC 2518 (WebDAV) 200 => 'OK', 201 => 'Created', 202 => 'Accepted', 203 => 'Non-Authoritative Information', 204 => 'No Content', 205 => 'Reset Content', 206 => 'Partial Content', 207 => 'Multi-Status', # RFC 2518 (WebDAV) 208 => 'Already Reported', # RFC 5842 300 => 'Multiple Choices', 301 => 'Moved Permanently', 302 => 'Found', 303 => 'See Other', 304 => 'Not Modified', 305 => 'Use Proxy', 307 => 'Temporary Redirect', 400 => 'Bad Request', 401 => 'Unauthorized', 402 => 'Payment Required', 403 => 'Forbidden', 404 => 'Not Found', 405 => 'Method Not Allowed', 406 => 'Not Acceptable', 407 => 'Proxy Authentication Required', 408 => 'Request Timeout', 409 => 'Conflict', 410 => 'Gone', 411 => 'Length Required', 412 => 'Precondition Failed', 413 => 'Request Entity Too Large', 414 => 'Request-URI Too Large', 415 => 'Unsupported Media Type', 416 => 'Request Range Not Satisfiable', 417 => 'Expectation Failed', 418 => 'I\'m a teapot', # RFC 2324 422 => 'Unprocessable Entity', # RFC 2518 (WebDAV) 423 => 'Locked', # RFC 2518 (WebDAV) 424 => 'Failed Dependency', # RFC 2518 (WebDAV) 425 => 'No code', # WebDAV Advanced Collections 426 => 'Upgrade Required', # RFC 2817 428 => 'Precondition Required', 429 => 'Too Many Requests', 431 => 'Request Header Fields Too Large', 449 => 'Retry with', # unofficial Microsoft 500 => 'Internal Server Error', 501 => 'Not Implemented', 502 => 'Bad Gateway', 503 => 'Service Unavailable', 504 => 'Gateway Timeout', 505 => 'HTTP Version Not Supported', 506 => 'Variant Also Negotiates', # RFC 2295 507 => 'Insufficient Storage', # RFC 2518 (WebDAV) 509 => 'Bandwidth Limit Exceeded', # unofficial 510 => 'Not Extended', # RFC 2774 511 => 'Network Authentication Required', ); my $mnemonicCode = ''; my ($code, $message); while (($code, $message) = each %StatusCode) { # create mnemonic subroutines $message =~ s/I'm/I am/; $message =~ tr/a-z \-/A-Z__/; $mnemonicCode .= "sub HTTP_$message () { $code }\n"; $mnemonicCode .= "*RC_$message = \\&HTTP_$message;\n"; # legacy $mnemonicCode .= "push(\@EXPORT_OK, 'HTTP_$message');\n"; $mnemonicCode .= "push(\@EXPORT, 'RC_$message');\n"; } eval $mnemonicCode; # only one eval for speed die if $@; # backwards compatibility *RC_MOVED_TEMPORARILY = \&RC_FOUND; # 302 was renamed in the standard push(@EXPORT, "RC_MOVED_TEMPORARILY"); %EXPORT_TAGS = ( constants => [grep /^HTTP_/, @EXPORT_OK], is => [grep /^is_/, @EXPORT, @EXPORT_OK], ); sub status_message ($) { $StatusCode{$_[0]}; } sub is_info ($) { $_[0] >= 100 && $_[0] < 200; } sub is_success ($) { $_[0] >= 200 && $_[0] < 300; } sub is_redirect ($) { $_[0] >= 300 && $_[0] < 400; } sub is_error ($) { $_[0] >= 400 && $_[0] < 600; } sub is_client_error ($) { $_[0] >= 400 && $_[0] < 500; } sub is_server_error ($) { $_[0] >= 500 && $_[0] < 600; } 1; __END__ =head1 NAME HTTP::Status - HTTP Status code processing =head1 SYNOPSIS use HTTP::Status qw(:constants :is status_message); if ($rc != HTTP_OK) { print status_message($rc), "\n"; } if (is_success($rc)) { ... } if (is_error($rc)) { ... } if (is_redirect($rc)) { ... } =head1 DESCRIPTION I<HTTP::Status> is a library of routines for defining and classifying HTTP status codes for libwww-perl. Status codes are used to encode the overall outcome of an HTTP response message. Codes correspond to those defined in RFC 2616 and RFC 2518. =head1 CONSTANTS The following constant functions can be used as mnemonic status code names. None of these are exported by default. Use the C<:constants> tag to import them all. HTTP_CONTINUE (100) HTTP_SWITCHING_PROTOCOLS (101) HTTP_PROCESSING (102) HTTP_OK (200) HTTP_CREATED (201) HTTP_ACCEPTED (202) HTTP_NON_AUTHORITATIVE_INFORMATION (203) HTTP_NO_CONTENT (204) HTTP_RESET_CONTENT (205) HTTP_PARTIAL_CONTENT (206) HTTP_MULTI_STATUS (207) HTTP_ALREADY_REPORTED (208) HTTP_MULTIPLE_CHOICES (300) HTTP_MOVED_PERMANENTLY (301) HTTP_FOUND (302) HTTP_SEE_OTHER (303) HTTP_NOT_MODIFIED (304) HTTP_USE_PROXY (305) HTTP_TEMPORARY_REDIRECT (307) HTTP_BAD_REQUEST (400) HTTP_UNAUTHORIZED (401) HTTP_PAYMENT_REQUIRED (402) HTTP_FORBIDDEN (403) HTTP_NOT_FOUND (404) HTTP_METHOD_NOT_ALLOWED (405) HTTP_NOT_ACCEPTABLE (406) HTTP_PROXY_AUTHENTICATION_REQUIRED (407) HTTP_REQUEST_TIMEOUT (408) HTTP_CONFLICT (409) HTTP_GONE (410) HTTP_LENGTH_REQUIRED (411) HTTP_PRECONDITION_FAILED (412) HTTP_REQUEST_ENTITY_TOO_LARGE (413) HTTP_REQUEST_URI_TOO_LARGE (414) HTTP_UNSUPPORTED_MEDIA_TYPE (415) HTTP_REQUEST_RANGE_NOT_SATISFIABLE (416) HTTP_EXPECTATION_FAILED (417) HTTP_I_AM_A_TEAPOT (418) HTTP_UNPROCESSABLE_ENTITY (422) HTTP_LOCKED (423) HTTP_FAILED_DEPENDENCY (424) HTTP_NO_CODE (425) HTTP_UPGRADE_REQUIRED (426) HTTP_PRECONDITION_REQUIRED (428) HTTP_TOO_MANY_REQUESTS (429) HTTP_REQUEST_HEADER_FIELDS_TOO_LARGE (431) HTTP_RETRY_WITH (449) HTTP_INTERNAL_SERVER_ERROR (500) HTTP_NOT_IMPLEMENTED (501) HTTP_BAD_GATEWAY (502) HTTP_SERVICE_UNAVAILABLE (503) HTTP_GATEWAY_TIMEOUT (504) HTTP_HTTP_VERSION_NOT_SUPPORTED (505) HTTP_VARIANT_ALSO_NEGOTIATES (506) HTTP_INSUFFICIENT_STORAGE (507) HTTP_BANDWIDTH_LIMIT_EXCEEDED (509) HTTP_NOT_EXTENDED (510) HTTP_NETWORK_AUTHENTICATION_REQUIRED (511) =head1 FUNCTIONS The following additional functions are provided. Most of them are exported by default. The C<:is> import tag can be used to import all the classification functions. =over 4 =item status_message( $code ) The status_message() function will translate status codes to human readable strings. The string is the same as found in the constant names above. If the $code is unknown, then C<undef> is returned. =item is_info( $code ) Return TRUE if C<$code> is an I<Informational> status code (1xx). This class of status code indicates a provisional response which can't have any content. =item is_success( $code ) Return TRUE if C<$code> is a I<Successful> status code (2xx). =item is_redirect( $code ) Return TRUE if C<$code> is a I<Redirection> status code (3xx). This class of status code indicates that further action needs to be taken by the user agent in order to fulfill the request. =item is_error( $code ) Return TRUE if C<$code> is an I<Error> status code (4xx or 5xx). The function returns TRUE for both client and server error status codes. =item is_client_error( $code ) Return TRUE if C<$code> is a I<Client Error> status code (4xx). This class of status code is intended for cases in which the client seems to have erred. This function is B<not> exported by default. =item is_server_error( $code ) Return TRUE if C<$code> is a I<Server Error> status code (5xx). This class of status codes is intended for cases in which the server is aware that it has erred or is incapable of performing the request. This function is B<not> exported by default. =back =head1 BUGS For legacy reasons all the C<HTTP_> constants are exported by default with the prefix C<RC_>. It's recommended to use explicit imports and the C<:constants> tag instead of relying on this.

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