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fix: regular expressions in word mutes (#8254)

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* fix: handle regex exceptions for word mutes

* add i18n strings

Co-authored-by: rinsuki <428rinsuki+git@gmail.com>

* stricter input validation in backend

* add migration for hard mutes

* fix

* use correct regex library in migration

* use query builder to avoid SQL injection

Co-authored-by: Robin B <robflop98@outlook.com>
Co-authored-by: rinsuki <428rinsuki+git@gmail.com>
This commit is contained in:
Johann150 2022-02-10 11:47:46 +01:00 committed by GitHub
parent 7ba5512a65
commit afb6304979
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GPG Key ID: 4AEE18F83AFDEB23
6 changed files with 173 additions and 31 deletions
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2
locales/ja-JP.yml
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@ -595,6 +595,8 @@ smtpSecure: "SMTP 接続に暗黙的なSSL/TLSを使用する"
smtpSecureInfo: "STARTTLS使用時はオフにします。"
testEmail: "配信テスト"
wordMute: "ワードミュート"
regexpError: "正規表現エラー"
regexpErrorDescription: "{tab}ワードミュートの{line}行目の正規表現にエラーが発生しました:"
instanceMute: "インスタンスミュート"
userSaysSomething: "{name}が何かを言いました"
makeActive: "アクティブにする"

64
packages/backend/migration/1644010796173-convert-hard-mutes.js Normal file
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@ -0,0 +1,64 @@
const RE2 = require('re2');
const { MigrationInterface, QueryRunner } = require("typeorm");
module.exports = class convertHardMutes1644010796173 {
name = 'convertHardMutes1644010796173'
async up(queryRunner) {
let entries = await queryRunner.query(`SELECT "userId", "mutedWords" FROM "user_profile"`);
for(let i = 0; i < entries.length; i++) {
let words = entries[i].mutedWords
.map(line => {
const regexp = line.join(" ").match(/^\/(.+)\/(.*)$/);
if (regexp) {
// convert regexp's
try {
new RE2(regexp[1], regexp[2]);
return `/${regexp[1]}/${regexp[2]}`;
} catch (err) {
// invalid regex, ignore it
return [];
}
} else {
// remove empty segments
return line.filter(x => x !== '');
}
})
// remove empty lines
.filter(x => !(Array.isArray(x) && x.length === 0));
await queryRunner.connection.createQueryBuilder()
.update('user_profile')
.set({
mutedWords: words
})
.where('userId = :id', { id: entries[i].userId })
.execute();
}
}
async down(queryRunner) {
let entries = await queryRunner.query(`SELECT "userId", "mutedWords" FROM "user_profile"`);
for(let i = 0; i < entries.length; i++) {
let words = entries[i].mutedWords
.map(line => {
if (Array.isArray(line)) {
return line;
} else {
// do not split regex at spaces again
return [line];
}
})
// remove empty lines
.filter(x => !(Array.isArray(x) && x.length === 0));
await queryRunner.connection.createQueryBuilder()
.update('user_profile')
.set({
mutedWords: words
})
.where('userId = :id', { id: entries[i].userId })
.execute();
}
}
}

31
packages/backend/src/misc/check-word-mute.ts
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@ -11,26 +11,31 @@ type UserLike = {
id: User['id'];
};
export async function checkWordMute(note: NoteLike, me: UserLike | null | undefined, mutedWords: string[][]): Promise<boolean> {
export async function checkWordMute(note: NoteLike, me: UserLike | null | undefined, mutedWords: Array<string | string[]>): Promise<boolean> {
// 自分自身
if (me && (note.userId === me.id)) return false;
const words = mutedWords
// Clean up
.map(xs => xs.filter(x => x !== ''))
.filter(xs => xs.length > 0);
if (words.length > 0) {
if (mutedWords.length > 0) {
if (note.text == null) return false;
const matched = words.some(and =>
and.every(keyword => {
const regexp = keyword.match(/^\/(.+)\/(.*)$/);
if (regexp) {
const matched = mutedWords.some(filter => {
if (Array.isArray(filter)) {
return filter.every(keyword => note.text!.includes(keyword));
} else {
// represents RegExp
const regexp = filter.match(/^\/(.+)\/(.*)$/);
// This should never happen due to input sanitisation.
if (!regexp) return false;
try {
return new RE2(regexp[1], regexp[2]).test(note.text!);
} catch (err) {
// This should never happen due to input sanitisation.
return false;
}
return note.text!.includes(keyword);
}));
}
});
if (matched) return true;
}

21
packages/backend/src/server/api/endpoints/i/update.ts
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@ -1,3 +1,4 @@
const RE2 = require('re2');
import $ from 'cafy';
import * as mfm from 'mfm-js';
import { ID } from '@/misc/cafy-id';
@ -117,7 +118,7 @@ export const meta = {
},
mutedWords: {
validator: $.optional.arr($.arr($.str)),
validator: $.optional.arr($.either($.arr($.str.min(1)).min(1), $.str)),
},
mutedInstances: {
@ -163,6 +164,12 @@ export const meta = {
code: 'NO_SUCH_PAGE',
id: '8e01b590-7eb9-431b-a239-860e086c408e',
},
invalidRegexp: {
message: 'Invalid Regular Expression.',
code: 'INVALID_REGEXP',
id: '0d786918-10df-41cd-8f33-8dec7d9a89a5',
}
},
res: {
@ -191,6 +198,18 @@ export default define(meta, async (ps, _user, token) => {
if (ps.avatarId !== undefined) updates.avatarId = ps.avatarId;
if (ps.bannerId !== undefined) updates.bannerId = ps.bannerId;
if (ps.mutedWords !== undefined) {
// validate regular expression syntax
ps.mutedWords.filter(x => !Array.isArray(x)).forEach(x => {
const regexp = x.match(/^\/(.+)\/(.*)$/);
if (!regexp) throw new ApiError(meta.errors.invalidRegexp);
try {
new RE2(regexp[1], regexp[2]);
} catch (err) {
throw new ApiError(meta.errors.invalidRegexp);
}
});
profileUpdates.mutedWords = ps.mutedWords;
profileUpdates.enableWordMute = ps.mutedWords.length > 0;
}

55
packages/client/src/pages/settings/word-mute.vue
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@ -81,18 +81,65 @@ export default defineComponent({
},
async created() {
this.softMutedWords = this.$store.state.mutedWords.map(x => x.join(' ')).join('\n');
this.hardMutedWords = this.$i.mutedWords.map(x => x.join(' ')).join('\n');
const render = (mutedWords) => mutedWords.map(x => {
if (Array.isArray(x)) {
return x.join(' ');
} else {
return x;
}
}).join('\n');
this.softMutedWords = render(this.$store.state.mutedWords);
this.hardMutedWords = render(this.$i.mutedWords);
this.hardWordMutedNotesCount = (await os.api('i/get-word-muted-notes-count', {})).count;
},
methods: {
async save() {
this.$store.set('mutedWords', this.softMutedWords.trim().split('\n').map(x => x.trim().split(' ')));
const parseMutes = (mutes, tab) => {
// split into lines, remove empty lines and unnecessary whitespace
let lines = mutes.trim().split('\n').map(line => line.trim()).filter(line => line != '');
// check each line if it is a RegExp or not
for(let i = 0; i < lines.length; i++) {
const line = lines[i]
const regexp = line.match(/^\/(.+)\/(.*)$/);
if (regexp) {
// check that the RegExp is valid
try {
new RegExp(regexp[1], regexp[2]);
// note that regex lines will not be split by spaces!
} catch (err) {
// invalid syntax: do not save, do not reset changed flag
os.alert({
type: 'error',
title: this.$ts.regexpError,
text: this.$t('regexpErrorDescription', { tab, line: i + 1 }) + "\n" + err.toString()
});
// re-throw error so these invalid settings are not saved
throw err;
}
} else {
lines[i] = line.split(' ');
}
}
};
let softMutes, hardMutes;
try {
softMutes = parseMutes(this.softMutedWords, this.$ts._wordMute.soft);
hardMutes = parseMutes(this.hardMutedWords, this.$ts._wordMute.hard);
} catch (err) {
// already displayed error message in parseMutes
return;
}
this.$store.set('mutedWords', softMutes);
await os.api('i/update', {
mutedWords: this.hardMutedWords.trim().split('\n').map(x => x.trim().split(' ')),
mutedWords: hardMutes,
});
this.changed = false;
},

31
packages/client/src/scripts/check-word-mute.ts
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@ -1,23 +1,28 @@
export function checkWordMute(note: Record<string, any>, me: Record<string, any> | null | undefined, mutedWords: string[][]): boolean {
export function checkWordMute(note: Record<string, any>, me: Record<string, any> | null | undefined, mutedWords: Array<string | string[]>): boolean {
// 自分自身
if (me && (note.userId === me.id)) return false;
const words = mutedWords
// Clean up
.map(xs => xs.filter(x => x !== ''))
.filter(xs => xs.length > 0);
if (words.length > 0) {
if (mutedWords.length > 0) {
if (note.text == null) return false;
const matched = words.some(and =>
and.every(keyword => {
const regexp = keyword.match(/^\/(.+)\/(.*)$/);
if (regexp) {
const matched = mutedWords.some(filter => {
if (Array.isArray(filter)) {
return filter.every(keyword => note.text!.includes(keyword));
} else {
// represents RegExp
const regexp = filter.match(/^\/(.+)\/(.*)$/);
// This should never happen due to input sanitisation.
if (!regexp) return false;
try {
return new RegExp(regexp[1], regexp[2]).test(note.text!);
} catch (err) {
// This should never happen due to input sanitisation.
return false;
}
return note.text!.includes(keyword);
}));
}
});
if (matched) return true;
}