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Modern s390x x15 has accelerated zlib operations on the CPU. Many distros currently have patches to take advantage of this feature. One side-effect of these patches is that compression routine is no longer deterministic as with software. Interruption to input produces different compressed results. Invalid input can result in processor fault. PR-URL: https://github.com/nodejs/node/pull/44117 Reviewed-By: Luigi Pinca <luigipinca@gmail.com> Reviewed-By: Michael Dawson <midawson@redhat.com> Reviewed-By: Richard Lau <rlau@redhat.com>
84 lines
4.4 KiB
JavaScript
84 lines
4.4 KiB
JavaScript
// Copyright Joyent, Inc. and other Node contributors.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to permit
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// persons to whom the Software is furnished to do so, subject to the
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// following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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// USE OR OTHER DEALINGS IN THE SOFTWARE.
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'use strict';
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// Test compressing and uncompressing a string with zlib
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const common = require('../common');
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const assert = require('assert');
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const zlib = require('zlib');
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const inputString = 'ΩΩLorem ipsum dolor sit amet, consectetur adipiscing eli' +
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't. Morbi faucibus, purus at gravida dictum, libero arcu ' +
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'convallis lacus, in commodo libero metus eu nisi. Nullam' +
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' commodo, neque nec porta placerat, nisi est fermentum a' +
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'ugue, vitae gravida tellus sapien sit amet tellus. Aenea' +
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'n non diam orci. Proin quis elit turpis. Suspendisse non' +
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' diam ipsum. Suspendisse nec ullamcorper odio. Vestibulu' +
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'm arcu mi, sodales non suscipit id, ultrices ut massa. S' +
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'ed ac sem sit amet arcu malesuada fermentum. Nunc sed. ';
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const expectedBase64Deflate = 'eJxdUUtOQzEMvMoc4OndgT0gJCT2buJWlpI4jePeqZfpmX' +
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'AKLRKbLOzx/HK73q6vOrhCunlF1qIDJhNUeW5I2ozT5OkD' +
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'lKWLJWkncJG5403HQXAkT3Jw29B9uIEmToMukglZ0vS6oc' +
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'iBh4JG8sV4oVLEUCitK2kxq1WzPnChHDzsaGKy491LofoA' +
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'bWh8do43oeuYhB5EPCjcLjzYJo48KrfQBvnJecNFJvHT1+' +
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'RSQsGoC7dn2t/xjhduTA1NWyQIZR0pbHwMDatnD+crPqKS' +
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'qGPHp1vnlsWM/07ubf7bheF7kqSj84Bm0R1fYTfaK8vqqq' +
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'fKBtNMhe3OZh6N95CTvMX5HJJi4xOVzCgUOIMSLH7wmeOH' +
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'aFE4RdpnGavKtrB5xzfO/Ll9';
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const expectedBase64Gzip = 'H4sIAAAAAAAAA11RS05DMQy8yhzg6d2BPSAkJPZu4laWkjiN4' +
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'96pl+mZcAotEpss7PH8crverq86uEK6eUXWogMmE1R5bkjajN' +
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'Pk6QOUpYslaSdwkbnjTcdBcCRPcnDb0H24gSZOgy6SCVnS9Lq' +
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'hyIGHgkbyxXihUsRQKK0raTGrVbM+cKEcPOxoYrLj3Uuh+gBt' +
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'aHx2jjeh65iEHkQ8KNwuPNgmjjwqt9AG+cl5w0Um8dPX5FJCw' +
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'agLt2fa3/GOF25MDU1bJAhlHSlsfAwNq2cP5ys+opKoY8enW+' +
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'eWxYz/Tu5t/tuF4XuSpKPzgGbRHV9hN9ory+qqp8oG00yF7c5' +
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'mHo33kJO8xfkckmLjE5XMKBQ4gxIsfvCZ44doUThF2mcZq8q2' +
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'sHnHNzRtagj5AQAA';
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zlib.deflate(inputString, common.mustCall((err, buffer) => {
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zlib.inflate(buffer, common.mustCall((err, inflated) => {
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assert.strictEqual(inflated.toString(), inputString);
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}));
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}));
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zlib.gzip(inputString, common.mustCall((err, buffer) => {
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// Can't actually guarantee that we'll get exactly the same
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// deflated bytes when we compress a string, since the header
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// depends on stuff other than the input string itself.
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// However, decrypting it should definitely yield the same
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// result that we're expecting, and this should match what we get
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// from inflating the known valid deflate data.
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zlib.gunzip(buffer, common.mustCall((err, gunzipped) => {
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assert.strictEqual(gunzipped.toString(), inputString);
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}));
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}));
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let buffer = Buffer.from(expectedBase64Deflate, 'base64');
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zlib.unzip(buffer, common.mustCall((err, buffer) => {
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assert.strictEqual(buffer.toString(), inputString);
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}));
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buffer = Buffer.from(expectedBase64Gzip, 'base64');
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zlib.unzip(buffer, common.mustCall((err, buffer) => {
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assert.strictEqual(buffer.toString(), inputString);
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}));
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