This commit is contained in:
Apcallover
2025-12-19 16:13:09 +08:00
parent 44c297aac2
commit b43eb98a1c
3 changed files with 173 additions and 3 deletions

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@@ -82,7 +82,7 @@ const { userInfo } = storeToRefs(useUserStore());
const { getUserResume } = useUserStore();
const { dictLabel, oneDictData } = useDictStore();
const openSelectPopup = inject('openSelectPopup');
import { FileValidator } from '@/static/js/fileValidator.js'; //文件校验
import { FileValidator } from '@/utils/fileValidator.js'; //文件校验
const percent = ref('0%');
const state = reactive({
@@ -404,4 +404,4 @@ function selectAvatar() {
color: #FFFFFF;
text-align: center;
line-height: 90rpx
</style>
</style>

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@@ -282,7 +282,7 @@ import successIcon from '@/static/icon/success.png';
import useUserStore from '@/stores/useUserStore';
const { isMachineEnv } = storeToRefs(useUserStore());
import {FileValidator} from "@/static/js/fileValidator.js" //文件校验
import { FileValidator } from '@/utils/fileValidator.js'; //文件校验
// hook
// 语音识别
const {

170
utils/fileValidator.js Normal file
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@@ -0,0 +1,170 @@
const KNOWN_SIGNATURES = {
png: '89504E470D0A1A0A',
jpg: 'FFD8FF',
jpeg: 'FFD8FF',
gif: '47494638',
webp: '52494646',
docx: '504B0304',
xlsx: '504B0304',
pptx: '504B0304',
doc: 'D0CF11E0',
xls: 'D0CF11E0',
ppt: 'D0CF11E0',
pdf: '25504446',
txt: 'TYPE_TEXT',
csv: 'TYPE_TEXT',
md: 'TYPE_TEXT',
json: 'TYPE_TEXT',
};
export class FileValidator {
version = '1.0.0';
signs = Object.keys(KNOWN_SIGNATURES);
constructor(options = {}) {
this.maxSizeMB = options.maxSizeMB || 10;
if (options.allowedExtensions && Array.isArray(options.allowedExtensions)) {
this.allowedConfig = {};
options.allowedExtensions.forEach((ext) => {
const key = ext.toLowerCase();
if (KNOWN_SIGNATURES[key]) {
this.allowedConfig[key] = KNOWN_SIGNATURES[key];
} else {
console.warn(`[FileValidator] 未知的文件类型: .${key},已忽略`);
}
});
} else {
this.allowedConfig = {
...KNOWN_SIGNATURES,
};
}
}
_isValidUTF8(buffer) {
try {
const decoder = new TextDecoder('utf-8', {
fatal: true,
});
decoder.decode(buffer);
return true;
} catch (e) {
return false;
}
}
_bufferToHex(buffer) {
return Array.prototype.map
.call(new Uint8Array(buffer), (x) => ('00' + x.toString(16)).slice(-2))
.join('')
.toUpperCase();
}
_countCSVRows(buffer) {
const decoder = new TextDecoder('utf-8');
const text = decoder.decode(buffer);
let rowCount = 0;
let inQuote = false;
let len = text.length;
for (let i = 0; i < len; i++) {
const char = text[i];
if (char === '"') {
inQuote = !inQuote;
} else if (char === '\n' && !inQuote) {
rowCount++;
}
}
if (len > 0 && text[len - 1] !== '\n') {
rowCount++;
}
return rowCount;
}
_validateTextContent(buffer, extension) {
let contentStr = '';
try {
const decoder = new TextDecoder('utf-8', {
fatal: true,
});
contentStr = decoder.decode(buffer);
} catch (e) {
console.warn('UTF-8 解码失败', e);
return false;
}
if (contentStr.includes('\0')) {
return false;
}
if (extension === 'json') {
try {
JSON.parse(contentStr);
} catch (e) {
console.warn('无效的 JSON 格式');
return false;
}
}
return true;
}
validate(file) {
return new Promise((resolve, reject) => {
if (!file || !file.name) return reject('无效的文件对象');
if (file.size > this.maxSizeMB * 1024 * 1024) {
return reject(`文件大小超出限制 (最大 ${this.maxSizeMB}MB)`);
}
const fileName = file.name.toLowerCase();
const extension = fileName.substring(fileName.lastIndexOf('.') + 1);
const expectedMagic = this.allowedConfig[extension];
if (!expectedMagic) {
return reject(`不支持的文件格式: .${extension}`);
}
const reader = new FileReader();
reader.onload = (e) => {
const buffer = e.target.result;
let isSafe = false;
if (expectedMagic === 'TYPE_TEXT') {
if (this._validateTextContent(buffer, extension)) {
isSafe = true;
} else {
if (extension === 'json') {
return reject(`文件异常:不是有效的 JSON 文件`);
}
return reject(`文件异常:.${extension} 包含非法二进制内容或编码错误`);
}
if (extension === 'csv' && this.csvMaxRows > 0) {
const rows = this._countCSVRows(buffer);
if (rows > this.csvMaxRows) {
return reject(`CSV 行数超出限制 (当前 ${rows} 行,最大允许 ${this.csvMaxRows} 行)`);
}
}
} else {
const fileHeader = this._bufferToHex(buffer.slice(0, 8));
if (fileHeader.startsWith(expectedMagic)) {
isSafe = true;
} else {
return reject(`文件可能已被篡改 (真实类型与 .${extension} 不符)`);
}
}
if (isSafe) resolve(true);
};
reader.onerror = () => reject('文件读取失败,无法校验');
if (expectedMagic === 'TYPE_TEXT' && extension === 'json') {
reader.readAsArrayBuffer(file);
} else {
reader.readAsArrayBuffer(file.slice(0, 2048));
}
});
}
}
// 【demo】
// 如果传入了 allowedExtensions则只使用传入的否则使用全部 KNOWN_SIGNATURES
// const imageValidator = new FileValidator({
// maxSizeMB: 5,
// allowedExtensions: ['png', 'jpg', 'jpeg'],
// });
// imageValidator
// .validate(file)
// .then(() => {
// statusDiv.textContent = `检测通过: ${file.name}`;
// statusDiv.style.color = 'green';
// console.log('图片校验通过,开始上传...');
// // upload(file)...
// })
// .catch((err) => {
// statusDiv.textContent = `检测失败: ${err}`;
// statusDiv.style.color = 'red';
// });