File

spec/util_http_spec.lua @ 11665:148075532021

net.server_epoll: Prevent stack overflow of opportunistic writes net.http.files serving a big enough file on a fast enough connection with opportunistic_writes enabled could trigger a stack overflow through repeatedly serving more data that immediately gets sent, draining the buffer and triggering more data to be sent. This also blocked the server on a single task until completion or an error. This change prevents nested opportunistic writes, which should prevent the stack overflow, at the cost of reduced download speed, but this is unlikely to be noticeable outside of Gbit networks. Speed at the cost of blocking other processing is not worth it, especially with the risk of stack overflow.
author Kim Alvefur <zash@zash.se>
date Sun, 11 Jul 2021 09:39:21 +0200
parent 10711:d2e4584ba7b3
child 13124:f15e23840780
line wrap: on
line source


local http = require "util.http";

describe("util.http", function()
	describe("#urlencode()", function()
		it("should not change normal characters", function()
			assert.are.equal(http.urlencode("helloworld123"), "helloworld123");
		end);

		it("should escape spaces", function()
			assert.are.equal(http.urlencode("hello world"), "hello%20world");
		end);

		it("should escape important URL characters", function()
			assert.are.equal(http.urlencode("This & that = something"), "This%20%26%20that%20%3d%20something");
		end);
	end);

	describe("#urldecode()", function()
		it("should not change normal characters", function()
			assert.are.equal("helloworld123", http.urldecode("helloworld123"), "Normal characters not escaped");
		end);

		it("should decode spaces", function()
			assert.are.equal("hello world", http.urldecode("hello%20world"), "Spaces escaped");
		end);

		it("should decode important URL characters", function()
			assert.are.equal("This & that = something", http.urldecode("This%20%26%20that%20%3d%20something"), "Important URL chars escaped");
		end);

		it("should decode both lower and uppercase", function ()
			assert.are.equal("This & that = {something}.", http.urldecode("This%20%26%20that%20%3D%20%7Bsomething%7D%2E"), "Important URL chars escaped");
		end);

	end);

	describe("#formencode()", function()
		it("should encode basic data", function()
			assert.are.equal(http.formencode({ { name = "one", value = "1"}, { name = "two", value = "2" } }), "one=1&two=2", "Form encoded");
		end);

		it("should encode special characters with escaping", function()
			assert.are.equal(http.formencode({ { name = "one two", value = "1"}, { name = "two one&", value = "2" } }), "one+two=1&two+one%26=2", "Form encoded");
		end);
	end);

	describe("#formdecode()", function()
		it("should decode basic data", function()
			local t = http.formdecode("one=1&two=2");
			assert.are.same(t, {
				{ name = "one", value = "1" };
				{ name = "two", value = "2" };
				one = "1";
				two = "2";
			});
		end);

		it("should decode special characters", function()
			local t = http.formdecode("one+two=1&two+one%26=2");
			assert.are.same(t, {
				{ name = "one two", value = "1" };
				{ name = "two one&", value = "2" };
				["one two"] = "1";
				["two one&"] = "2";
			});
		end);
	end);

	describe("normalize_path", function ()
		it("root path is always '/'", function ()
			assert.equal("/", http.normalize_path("/"));
			assert.equal("/", http.normalize_path(""));
			assert.equal("/", http.normalize_path("/", true));
			assert.equal("/", http.normalize_path("", true));
		end);

		it("works", function ()
			assert.equal("/foo", http.normalize_path("foo"));
			assert.equal("/foo", http.normalize_path("/foo"));
			assert.equal("/foo", http.normalize_path("foo/"));
			assert.equal("/foo", http.normalize_path("/foo/"));
		end);

		it("is_dir works", function ()
			assert.equal("/foo/", http.normalize_path("foo", true));
			assert.equal("/foo/", http.normalize_path("/foo", true));
			assert.equal("/foo/", http.normalize_path("foo/", true));
			assert.equal("/foo/", http.normalize_path("/foo/", true));
		end);
	end);

	describe("contains_token", function ()
		it("is present in field", function ()
			assert.is_true(http.contains_token("foo", "foo"));
			assert.is_true(http.contains_token("foo, bar", "foo"));
			assert.is_true(http.contains_token("foo,bar", "foo"));
			assert.is_true(http.contains_token("bar,  foo,baz", "foo"));
		end);

		it("is absent from field", function ()
			assert.is_false(http.contains_token("bar", "foo"));
			assert.is_false(http.contains_token("fooo", "foo"));
			assert.is_false(http.contains_token("foo o,bar", "foo"));
		end);

		it("is weird", function ()
			assert.is_(http.contains_token("fo o", "foo"));
		end);
	end);
end);