http: fix status codes (#6590)

cmd/tools/vtest-fixed.v

@@ -13,6 +13,7 @@ const (
 		// 'vlib/v/gen/js/jsgen_test.v',
 		'vlib/net/http/cookie_test.v',
 		'vlib/net/http/http_test.v',
+		'vlib/net/http/status_test.v',
 		'vlib/net/websocket/ws_test.v',
 		'vlib/sqlite/sqlite_test.v',
 		'vlib/orm/orm_test.v',

vlib/net/http/status.v

@@ -0,0 +1,253 @@
+// Copyright (c) 2020 Justin E. Jones. All rights reserved.
+// Use of this source code is governed by an MIT license
+// that can be found in the LICENSE file.
+module http
+
+// The status codes listed here are based on the comprehensive list, 
+// available at:
+// https://www.iana.org/assignments/http-status-codes/http-status-codes.xhtml
+pub enum Status {
+	unknown = -1
+	unassigned = 0
+	cont = 100
+	switching_protocols = 101
+	processing = 102
+	checkpoint_draft = 103
+	ok = 200
+	created = 201
+	accepted = 202
+	non_authoritative_information = 203
+	no_content = 204
+	reset_content = 205
+	partial_content = 206
+	multi_status = 207
+	already_reported = 208
+	im_used = 226
+	multiple_choices = 300
+	moved_permanently = 301
+	found = 302
+	see_other = 303
+	not_modified = 304
+	use_proxy = 305
+	switch_proxy = 306
+	temporary_redirect = 307
+	permanent_redirect = 308
+	bad_request = 400
+	unauthorized = 401
+	payment_required = 402
+	forbidden = 403
+	not_found = 404
+	method_not_allowed = 405
+	not_acceptable = 406
+	proxy_authentication_required = 407
+	request_timeout = 408
+	conflict = 409
+	gone = 410
+	length_required = 411
+	precondition_failed = 412
+	request_entity_too_large = 413
+	request_uri_too_long = 414
+	unsupported_media_type = 415
+	requested_range_not_satisfiable = 416
+	expectation_failed = 417
+	im_a_teapot = 418
+	misdirected_request = 421
+	unprocessable_entity = 422
+	locked = 423
+	failed_dependency = 424
+	unordered_collection = 425
+	upgrade_required = 426
+	precondition_required = 428
+	too_many_requests = 429
+	request_header_fields_too_large = 431
+	unavailable_for_legal_reasons = 451
+	client_closed_request = 499
+	internal_server_error = 500
+	not_implemented = 501
+	bad_gateway = 502
+	service_unavailable = 503
+	gateway_timeout = 504
+	http_version_not_supported = 505
+	variant_also_negotiates = 506
+	insufficient_storage = 507
+	loop_detected = 508
+	bandwidth_limit_exceeded = 509
+	not_extended = 510
+	network_authentication_required = 511
+}
+
+pub fn status_from_int(code int) Status {
+	return match code {
+		100 { Status.cont }
+		101 { Status.switching_protocols }
+		102 { Status.processing }
+		103 { Status.checkpoint_draft }
+		104...199 { Status.unassigned }
+		200 { Status.ok }
+		201 { Status.created }
+		202 { Status.accepted }
+		203 { Status.non_authoritative_information }
+		204 { Status.no_content }
+		205 { Status.reset_content }
+		206 { Status.partial_content }
+		207 { Status.multi_status }
+		208 { Status.already_reported }
+		209...225 { Status.unassigned }
+		226 { Status.im_used }
+		227...299 { Status.unassigned }
+		300 { Status.multiple_choices }
+		301 { Status.moved_permanently }
+		302 { Status.found }
+		303 { Status.see_other }
+		304 { Status.not_modified }
+		305 { Status.use_proxy }
+		306 { Status.switch_proxy }
+		307 { Status.temporary_redirect }
+		308 { Status.permanent_redirect }
+		309...399 { Status.unassigned }
+		400 { Status.bad_request }
+		401 { Status.unauthorized }
+		402 { Status.payment_required }
+		403 { Status.forbidden }
+		404 { Status.not_found }
+		405 { Status.method_not_allowed }
+		406 { Status.not_acceptable }
+		407 { Status.proxy_authentication_required }
+		408 { Status.request_timeout }
+		409 { Status.conflict }
+		410 { Status.gone }
+		411 { Status.length_required }
+		412 { Status.precondition_failed }
+		413 { Status.request_entity_too_large }
+		414 { Status.request_uri_too_long }
+		415 { Status.unsupported_media_type }
+		416 { Status.requested_range_not_satisfiable }
+		417 { Status.expectation_failed }
+		418 { Status.im_a_teapot }
+		419...420 { Status.unassigned }
+		421 { Status.misdirected_request }
+		422 { Status.unprocessable_entity }
+		423 { Status.locked }
+		424 { Status.failed_dependency }
+		425 { Status.unordered_collection }
+		426 { Status.upgrade_required }
+		428 { Status.precondition_required }
+		429 { Status.too_many_requests }
+		431 { Status.request_header_fields_too_large }
+		432...450 { Status.unassigned }
+		451 { Status.unavailable_for_legal_reasons }
+		452...499 { Status.unassigned }
+		500 { Status.internal_server_error }
+		501 { Status.not_implemented }
+		502 { Status.bad_gateway }
+		503 { Status.service_unavailable }
+		504 { Status.gateway_timeout }
+		505 { Status.http_version_not_supported }
+		506 { Status.variant_also_negotiates }
+		507 { Status.insufficient_storage }
+		508 { Status.loop_detected }
+		509 { Status.bandwidth_limit_exceeded }
+		510 { Status.not_extended }
+		511 { Status.network_authentication_required }
+		512...599 { Status.unassigned }
+		else { Status.unknown }
+	}
+}
+
+pub fn (code Status) str() string {
+	return match code {
+		.cont { 'Continue' }
+		.switching_protocols { 'Switching Protocols' }
+		.processing { 'Processing' }
+		.checkpoint_draft { 'Checkpoint Draft' }
+		.ok { 'OK' }
+		.created { 'Created' }
+		.accepted { 'Accepted' }
+		.non_authoritative_information { 'Non Authoritative Information' }
+		.no_content { 'No Content' }
+		.reset_content { 'Reset Content' }
+		.partial_content { 'Partial Content' }
+		.multi_status { 'Multi Status' }
+		.already_reported { 'Already Reported' }
+		.im_used { 'IM Used' }
+		.multiple_choices { 'Multiple Choices' }
+		.moved_permanently { 'Moved Permanently' }
+		.found { 'Found' }
+		.see_other { 'See Other' }
+		.not_modified { 'Not Modified' }
+		.use_proxy { 'Use Proxy' }
+		.switch_proxy { 'Switch Proxy' }
+		.temporary_redirect { 'Temporary Redirect' }
+		.permanent_redirect { 'Permanent Redirect' }
+		.bad_request { 'Bad Request' }
+		.unauthorized { 'Unauthorized' }
+		.payment_required { 'Payment Required' }
+		.forbidden { 'Forbidden' }
+		.not_found { 'Not Found' }
+		.method_not_allowed { 'Method Not Allowed' }
+		.not_acceptable { 'Not Acceptable' }
+		.proxy_authentication_required { 'Proxy Authentication Required' }
+		.request_timeout { 'Request Timeout' }
+		.conflict { 'Conflict' }
+		.gone { 'Gone' }
+		.length_required { 'Length Required' }
+		.precondition_failed { 'Precondition Failed' }
+		.request_entity_too_large { 'Request Entity Too Large' }
+		.request_uri_too_long { 'Request URI Too Long' }
+		.unsupported_media_type { 'Unsupported Media Type' }
+		.requested_range_not_satisfiable { 'Requested Range Not Satisfiable' }
+		.expectation_failed { 'Expectation Failed' }
+		.im_a_teapot { 'Im a teapot' }
+		.misdirected_request { 'Misdirected Request' }
+		.unprocessable_entity { 'Unprocessable Entity' }
+		.locked { 'Locked' }
+		.failed_dependency { 'Failed Dependency' }
+		.unordered_collection { 'Unordered Collection' }
+		.upgrade_required { 'Upgrade Required' }
+		.precondition_required { 'Precondition Required' }
+		.too_many_requests { 'Too Many Requests' }
+		.request_header_fields_too_large { 'Request Header Fields Too Large' }
+		.unavailable_for_legal_reasons { 'Unavailable For Legal Reasons' }
+		.internal_server_error { 'Internal Server Error' }
+		.not_implemented { 'Not Implemented' }
+		.bad_gateway { 'Bad Gateway' }
+		.service_unavailable { 'Service Unavailable' }
+		.gateway_timeout { 'Gateway Timeout' }
+		.http_version_not_supported { 'HTTP Version Not Supported' }
+		.variant_also_negotiates { 'Variant Also Negotiates' }
+		.insufficient_storage { 'Insufficient Storage' }
+		.loop_detected { 'Loop Detected' }
+		.bandwidth_limit_exceeded { 'Bandwidth Limit Exceeded' }
+		.not_extended { 'Not Extended' }
+		.network_authentication_required { 'Network Authentication Required' }
+		.unassigned { 'Unassigned' }
+		else { 'Unknown' }
+	}
+}
+
+// int converts an assigned and known Status to its integral equivalent.
+// if a Status is unknown or unassigned, this method will return zero
+pub fn (code Status) int() int {
+	if code in [.unknown, .unassigned] { return 0 }
+	return int(code)
+}
+
+// is_valid returns true if the status code is assigned and known
+pub fn (code Status) is_valid() bool {
+	number := code.int()
+	return number >= 100 && number < 600
+}
+
+// is_error will return true if the status code represents either a client or 
+// a server error; otherwise will return false
+pub fn (code Status) is_error() bool {
+	number := code.int()
+	return number >= 400 && number < 600
+}
+
+// is_success will return true if the status code represents either an 
+// informational, success, or redirection response; otherwise will return false
+pub fn (code Status) is_success() bool {
+	number := code.int()
+	return number >= 100 && number < 400
+}

vlib/net/http/status_test.v

@@ -0,0 +1,49 @@
+module http
+
+fn test_str() {
+	code := Status.bad_gateway
+	actual := code.str()
+	assert actual == 'Bad Gateway'
+}
+
+fn test_int() {
+	code := Status.see_other
+	actual := code.int()
+	assert actual == 303
+}
+
+fn test_is_valid() {
+	code := Status.gateway_timeout
+	actual := code.is_valid()
+	assert actual == true
+}
+
+fn test_is_valid_negative() {
+	code := Status.unassigned
+	actual := code.is_valid()
+	assert actual == false
+}
+
+fn test_is_error() {
+	code := Status.too_many_requests
+	actual := code.is_error()
+	assert actual == true
+}
+
+fn test_is_error_negative() {
+	code := Status.cont
+	actual := code.is_error()
+	assert actual == false
+}
+
+fn test_is_success() {
+	code := Status.accepted
+	actual := code.is_success()
+	assert actual == true
+}
+
+fn test_is_success_negative() {
+	code := Status.forbidden
+	actual := code.is_success()
+	assert actual == false
+}