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[Security Solution][Endpoint] Update to new manifest format (without compression) #70752

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Jul 4, 2020
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13 changes: 11 additions & 2 deletions x-pack/plugins/security_solution/common/endpoint/schema/common.ts
Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,15 @@

import * as t from 'io-ts';

export const compressionAlgorithm = t.keyof({
none: null,
zlib: null,
});

export const encryptionAlgorithm = t.keyof({
none: null,
});

export const identifier = t.string;

export const manifestVersion = t.string;
Expand All @@ -15,8 +24,8 @@ export const manifestSchemaVersion = t.keyof({
});
export type ManifestSchemaVersion = t.TypeOf<typeof manifestSchemaVersion>;

export const relativeUrl = t.string;

export const sha256 = t.string;

export const size = t.number;

export const url = t.string;
Original file line number Diff line number Diff line change
Expand Up @@ -5,13 +5,26 @@
*/

import * as t from 'io-ts';
import { identifier, manifestSchemaVersion, manifestVersion, sha256, size, url } from './common';
import {
compressionAlgorithm,
encryptionAlgorithm,
identifier,
manifestSchemaVersion,
manifestVersion,
relativeUrl,
sha256,
size,
} from './common';

export const manifestEntrySchema = t.exact(
t.type({
url,
sha256,
size,
relative_url: relativeUrl,
precompress_sha256: sha256,
precompress_size: size,
postcompress_sha256: sha256,
postcompress_size: size,
compression_algorithm: compressionAlgorithm,
encryption_algorithm: encryptionAlgorithm,
})
);

Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -57,6 +57,8 @@ export const getPackageConfigCreateCallback = (
try {
return updatedPackageConfig;
} finally {
// TODO: confirm creation of package config
// then commit.
await manifestManager.commit(wrappedManifest);
}
};
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -6,12 +6,12 @@

export const ArtifactConstants = {
GLOBAL_ALLOWLIST_NAME: 'endpoint-exceptionlist',
SAVED_OBJECT_TYPE: 'endpoint:exceptions-artifact',
SAVED_OBJECT_TYPE: 'endpoint:user-artifact',
SUPPORTED_OPERATING_SYSTEMS: ['linux', 'macos', 'windows'],
SCHEMA_VERSION: '1.0.0',
};

export const ManifestConstants = {
SAVED_OBJECT_TYPE: 'endpoint:exceptions-manifest',
SAVED_OBJECT_TYPE: 'endpoint:user-artifact-manifest',
SCHEMA_VERSION: '1.0.0',
};
Original file line number Diff line number Diff line change
Expand Up @@ -7,22 +7,20 @@
import { createHash } from 'crypto';
import { validate } from '../../../../common/validate';

import {
Entry,
EntryNested,
EntryMatch,
EntryMatchAny,
} from '../../../../../lists/common/schemas/types/entries';
import { Entry, EntryNested } from '../../../../../lists/common/schemas/types/entries';
import { FoundExceptionListItemSchema } from '../../../../../lists/common/schemas/response/found_exception_list_item_schema';
import { ExceptionListClient } from '../../../../../lists/server';
import {
InternalArtifactSchema,
TranslatedEntry,
TranslatedEntryMatch,
TranslatedEntryMatchAny,
TranslatedEntryNested,
WrappedTranslatedExceptionList,
wrappedExceptionList,
TranslatedEntryNestedEntry,
translatedEntryNestedEntry,
translatedEntry as translatedEntryType,
TranslatedEntryMatcher,
translatedEntryMatchMatcher,
translatedEntryMatchAnyMatcher,
} from '../../schemas';
import { ArtifactConstants } from './common';

Expand All @@ -36,11 +34,14 @@ export async function buildArtifact(

return {
identifier: `${ArtifactConstants.GLOBAL_ALLOWLIST_NAME}-${os}-${schemaVersion}`,
sha256,
encoding: 'application/json',
compressionAlgorithm: 'none',
encryptionAlgorithm: 'none',
decompressedSha256: sha256,
compressedSha256: sha256,
decompressedSize: exceptionsBuffer.byteLength,
compressedSize: exceptionsBuffer.byteLength,
created: Date.now(),
body: exceptionsBuffer.toString('base64'),
size: exceptionsBuffer.byteLength,
};
}

Expand Down Expand Up @@ -92,66 +93,80 @@ export function translateToEndpointExceptions(
exc: FoundExceptionListItemSchema,
schemaVersion: string
): TranslatedEntry[] {
const translatedList: TranslatedEntry[] = [];

if (schemaVersion === '1.0.0') {
exc.data.forEach((list) => {
list.entries.forEach((entry) => {
const tEntry = translateEntry(schemaVersion, entry);
if (tEntry !== undefined) {
translatedList.push(tEntry);
return exc.data
.flatMap((list) => {
return list.entries;
})
.reduce((entries: TranslatedEntry[], entry) => {
const translatedEntry = translateEntry(schemaVersion, entry);
if (translatedEntry !== undefined && translatedEntryType.is(translatedEntry)) {
entries.push(translatedEntry);
}
});
});
return entries;
}, []);
} else {
throw new Error('unsupported schemaVersion');
}
return translatedList;
}

function getMatcherFunction(field: string, matchAny?: boolean): TranslatedEntryMatcher {
return matchAny
? field.endsWith('.text')
? 'exact_caseless_any'
: 'exact_cased_any'
: field.endsWith('.text')
? 'exact_caseless'
: 'exact_cased';
}

function normalizeFieldName(field: string): string {
return field.endsWith('.text') ? field.substring(0, field.length - 5) : field;
}

function translateEntry(
schemaVersion: string,
entry: Entry | EntryNested
): TranslatedEntry | undefined {
let translatedEntry;
switch (entry.type) {
case 'nested': {
const e = (entry as unknown) as EntryNested;
const nestedEntries: TranslatedEntry[] = [];
for (const nestedEntry of e.entries) {
const translation = translateEntry(schemaVersion, nestedEntry);
if (translation !== undefined) {
nestedEntries.push(translation);
}
}
translatedEntry = {
const nestedEntries = entry.entries.reduce(
(entries: TranslatedEntryNestedEntry[], nestedEntry) => {
const translatedEntry = translateEntry(schemaVersion, nestedEntry);
if (nestedEntry !== undefined && translatedEntryNestedEntry.is(translatedEntry)) {
entries.push(translatedEntry);
}
return entries;
},
[]
);
return {
entries: nestedEntries,
field: e.field,
field: entry.field,
type: 'nested',
} as TranslatedEntryNested;
break;
};
}
case 'match': {
const e = (entry as unknown) as EntryMatch;
translatedEntry = {
field: e.field.endsWith('.text') ? e.field.substring(0, e.field.length - 5) : e.field,
operator: e.operator,
type: e.field.endsWith('.text') ? 'exact_caseless' : 'exact_cased',
value: e.value,
} as TranslatedEntryMatch;
break;
const matcher = getMatcherFunction(entry.field);
return translatedEntryMatchMatcher.is(matcher)
? {
field: normalizeFieldName(entry.field),
operator: entry.operator,
type: matcher,
value: entry.value,
}
: undefined;
}
case 'match_any': {
const matcher = getMatcherFunction(entry.field, true);
return translatedEntryMatchAnyMatcher.is(matcher)
? {
field: normalizeFieldName(entry.field),
operator: entry.operator,
type: matcher,
value: entry.value,
}
: undefined;
}
case 'match_any':
{
const e = (entry as unknown) as EntryMatchAny;
translatedEntry = {
field: e.field.endsWith('.text') ? e.field.substring(0, e.field.length - 5) : e.field,
operator: e.operator,
type: e.field.endsWith('.text') ? 'exact_caseless_any' : 'exact_cased_any',
value: e.value,
} as TranslatedEntryMatchAny;
}
break;
}
return translatedEntry || undefined;
}
Original file line number Diff line number Diff line change
Expand Up @@ -55,21 +55,33 @@ describe('manifest', () => {
expect(manifest1.toEndpointFormat()).toStrictEqual({
artifacts: {
'endpoint-exceptionlist-linux-1.0.0': {
sha256: '70d2e0ee5db0073b242df9af32e64447b932b73c3e66de3a922c61a4077b1a9c',
size: 268,
url:
compression_algorithm: 'none',
encryption_algorithm: 'none',
precompress_sha256: '70d2e0ee5db0073b242df9af32e64447b932b73c3e66de3a922c61a4077b1a9c',
postcompress_sha256: '70d2e0ee5db0073b242df9af32e64447b932b73c3e66de3a922c61a4077b1a9c',
precompress_size: 268,
postcompress_size: 268,
relative_url:
'/api/endpoint/artifacts/download/endpoint-exceptionlist-linux-1.0.0/70d2e0ee5db0073b242df9af32e64447b932b73c3e66de3a922c61a4077b1a9c',
},
'endpoint-exceptionlist-macos-1.0.0': {
sha256: '70d2e0ee5db0073b242df9af32e64447b932b73c3e66de3a922c61a4077b1a9c',
size: 268,
url:
compression_algorithm: 'none',
encryption_algorithm: 'none',
precompress_sha256: '70d2e0ee5db0073b242df9af32e64447b932b73c3e66de3a922c61a4077b1a9c',
postcompress_sha256: '70d2e0ee5db0073b242df9af32e64447b932b73c3e66de3a922c61a4077b1a9c',
precompress_size: 268,
postcompress_size: 268,
relative_url:
'/api/endpoint/artifacts/download/endpoint-exceptionlist-macos-1.0.0/70d2e0ee5db0073b242df9af32e64447b932b73c3e66de3a922c61a4077b1a9c',
},
'endpoint-exceptionlist-windows-1.0.0': {
sha256: '70d2e0ee5db0073b242df9af32e64447b932b73c3e66de3a922c61a4077b1a9c',
size: 268,
url:
compression_algorithm: 'none',
encryption_algorithm: 'none',
precompress_sha256: '70d2e0ee5db0073b242df9af32e64447b932b73c3e66de3a922c61a4077b1a9c',
postcompress_sha256: '70d2e0ee5db0073b242df9af32e64447b932b73c3e66de3a922c61a4077b1a9c',
precompress_size: 268,
postcompress_size: 268,
relative_url:
'/api/endpoint/artifacts/download/endpoint-exceptionlist-windows-1.0.0/70d2e0ee5db0073b242df9af32e64447b932b73c3e66de3a922c61a4077b1a9c',
},
},
Expand Down Expand Up @@ -107,7 +119,7 @@ describe('manifest', () => {

test('Manifest returns data for given artifact', async () => {
const artifact = artifacts[0];
const returned = manifest1.getArtifact(`${artifact.identifier}-${artifact.sha256}`);
const returned = manifest1.getArtifact(`${artifact.identifier}-${artifact.compressedSha256}`);
expect(returned).toEqual(artifact);
});

Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -33,13 +33,17 @@ describe('manifest_entry', () => {
});

test('Correct sha256 is returned', () => {
expect(manifestEntry.getSha256()).toEqual(
expect(manifestEntry.getCompressedSha256()).toEqual(
'70d2e0ee5db0073b242df9af32e64447b932b73c3e66de3a922c61a4077b1a9c'
);
expect(manifestEntry.getDecompressedSha256()).toEqual(
'70d2e0ee5db0073b242df9af32e64447b932b73c3e66de3a922c61a4077b1a9c'
);
});

test('Correct size is returned', () => {
expect(manifestEntry.getSize()).toEqual(268);
expect(manifestEntry.getCompressedSize()).toEqual(268);
expect(manifestEntry.getDecompressedSize()).toEqual(268);
});

test('Correct url is returned', () => {
Expand All @@ -54,9 +58,13 @@ describe('manifest_entry', () => {

test('Correct record is returned', () => {
expect(manifestEntry.getRecord()).toEqual({
sha256: '70d2e0ee5db0073b242df9af32e64447b932b73c3e66de3a922c61a4077b1a9c',
size: 268,
url:
compression_algorithm: 'none',
encryption_algorithm: 'none',
precompress_sha256: '70d2e0ee5db0073b242df9af32e64447b932b73c3e66de3a922c61a4077b1a9c',
postcompress_sha256: '70d2e0ee5db0073b242df9af32e64447b932b73c3e66de3a922c61a4077b1a9c',
precompress_size: 268,
postcompress_size: 268,
relative_url:
'/api/endpoint/artifacts/download/endpoint-exceptionlist-windows-1.0.0/70d2e0ee5db0073b242df9af32e64447b932b73c3e66de3a922c61a4077b1a9c',
});
});
Expand Down
Original file line number Diff line number Diff line change
Expand Up @@ -15,23 +15,31 @@ export class ManifestEntry {
}

public getDocId(): string {
return `${this.getIdentifier()}-${this.getSha256()}`;
return `${this.getIdentifier()}-${this.getCompressedSha256()}`;
}

public getIdentifier(): string {
return this.artifact.identifier;
}

public getSha256(): string {
return this.artifact.sha256;
public getCompressedSha256(): string {
return this.artifact.compressedSha256;
}

public getSize(): number {
return this.artifact.size;
public getDecompressedSha256(): string {
return this.artifact.decompressedSha256;
}

public getCompressedSize(): number {
return this.artifact.compressedSize;
}

public getDecompressedSize(): number {
return this.artifact.decompressedSize;
}

public getUrl(): string {
return `/api/endpoint/artifacts/download/${this.getIdentifier()}/${this.getSha256()}`;
return `/api/endpoint/artifacts/download/${this.getIdentifier()}/${this.getCompressedSha256()}`;
}

public getArtifact(): InternalArtifactSchema {
Expand All @@ -40,9 +48,13 @@ export class ManifestEntry {

public getRecord(): ManifestEntrySchema {
return {
sha256: this.getSha256(),
size: this.getSize(),
url: this.getUrl(),
compression_algorithm: 'none',
encryption_algorithm: 'none',
precompress_sha256: this.getDecompressedSha256(),
precompress_size: this.getDecompressedSize(),
postcompress_sha256: this.getCompressedSha256(),
postcompress_size: this.getCompressedSize(),
relative_url: this.getUrl(),
};
}
}
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