forked from lxm_tools/flutter-picgo
99 lines
2.8 KiB
Dart
99 lines
2.8 KiB
Dart
import 'dart:convert';
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import 'dart:io';
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import 'package:crypto/crypto.dart';
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import 'package:dio/dio.dart';
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import 'package:flutter_picgo/utils/net.dart';
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import 'package:path/path.dart';
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class UpyunApi {
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static const BASE_URL = 'http://v0.api.upyun.com';
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static const String operatorKey = 'operatorKey';
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static const String passwordKey = 'passwordKey';
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/// REST API PUT
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static Future putObject(
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File file,
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String operator,
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String password,
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String name,
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String bucket, {
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String path = '',
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}) async {
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String wholePath = joinAll([BASE_URL, bucket, path, name]);
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var bytes = file.readAsBytesSync();
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Response res = await NetUtils.getInstance().put(wholePath,
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data: Stream.fromIterable(bytes.map((e) => [e])),
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options: Options(
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headers: {
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Headers.contentLengthHeader: bytes.length,
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},
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contentType: 'image/${extension(name).replaceFirst('.', '')}',
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extra: {
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operatorKey: operator,
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passwordKey: password,
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}));
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return res.headers;
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}
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/// REST API DELETE
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static Future deleteObject(
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String bucket,
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String operator,
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String password,
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String key,
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) async {
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String wholePath = joinAll([BASE_URL, bucket, key]);
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Response res = await NetUtils.getInstance().delete(wholePath,
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options: Options(
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extra: {
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operatorKey: operator,
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passwordKey: password,
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},
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));
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return res.headers;
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}
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/// build policy
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static String buildPolicy(String bucket, String saveKey) {
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Map<String, dynamic> map = {
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'bucket': bucket,
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'save-key': saveKey,
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'expiration': DateTime.now().millisecondsSinceEpoch + 30 * 60 * 1000,
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};
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return base64.encode(utf8.encode(json.encode(map)));
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}
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}
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class UpyunInterceptor extends InterceptorsWrapper {
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@override
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Future onRequest(
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RequestOptions options,
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RequestInterceptorHandler handler,
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) async {
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if (options.path.contains(UpyunApi.BASE_URL.replaceFirst('http://', ''))) {
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/// 请求方式，如：GET、POST、PUT、HEAD 等
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String method = options.method.toUpperCase();
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String path = options.uri.path;
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String date = HttpDate.format(DateTime.now());
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String pwdMd5 =
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'${md5.convert(utf8.encode(options.extra[UpyunApi.passwordKey]))}';
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String operator = options.extra[UpyunApi.operatorKey];
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String sign = '$method&$path&$date';
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/// 签名构造
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var hmacsha1 = Hmac(sha1, utf8.encode('$pwdMd5'));
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var auth = hmacsha1.convert(utf8.encode(sign));
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String realAuth = base64.encode(auth.bytes);
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/// Add Common Header
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options.headers.addAll({
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'Date': date,
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'Authorization': 'UPYUN $operator:$realAuth',
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});
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}
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return options;
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}
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}
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