/
aliyun_Serverless_BPplayurl.php
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/
aliyun_Serverless_BPplayurl.php
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<?php
use RingCentral\Psr7\Response;
/*
To enable the initializer feature (https://help.aliyun.com/document_detail/89029.html)
please implement the initializer function as below：
function initializer($context) {
echo 'initializing' . PHP_EOL;
}
*/
function handler($request, $context): Response{
/*
$body = $request->getBody()->getContents();
$queries = $request->getQueryParams();
$method = $request->getMethod();
$headers = $request->getHeaders();
$path = $request->getAttribute('path');
$requestURI = $request->getAttribute('requestURI');
$clientIP = $request->getAttribute('clientIP');
*/
/* Config */
$upstream_pc_url = 'https://api.bilibili.com/pgc/player/web/playurl';
$upstream_pc_url_v2 = 'https://api.bilibili.com//pgc/player/web/v2/playurl';
$upstream_app_url = 'https://api.bilibili.com/pgc/player/api/playurl';
$upstream_pc_search_url = 'https://api.bilibili.com/x/web-interface/search/type';
$upstream_pc_qr_login = 'https://passport.bilibili.com/x/passport-login/web/qrcode/poll';
$timeout = 5; // seconds
/* Read incoming request */
$request_method = $request->getMethod();
$queries = $request->getQueryParams();
$request_query = substr(stristr($request->getAttribute("requestURI"), '?'), 1);
//$request->getHeaderLine('referer')会被阿里云替换成云函url
//$req_referer = $request->getHeaderLine('referer');
$req_referer = "https://www.bilibili.com";
$request_headers = $request->getHeaders();
$request_body = $request->getBody()->getContents();
$request_uri = $request->getAttribute('requestURI');
/* Forward request */
$ch = curl_init();
//处理请求相关header
$request_headers = array_remove_by_key($request_headers, 'X-Forwarded-Proto');
$request_headers = array_remove_by_key($request_headers, 'Host');
$request_headers = array_remove_by_key($request_headers, 'Referer');
//配置body压缩方式
$request_headers = array_remove_by_key($request_headers, 'Accept-Encoding');
curl_setopt($ch, CURLOPT_ENCODING, "identity"); //好像b站只有br压缩
$headers = array();
foreach($request_headers as $key => $value) {
$headers[] = $key.": ".implode($value);
}
//判断请求接口
if (substr_count($request_uri, '/auth/set_cookie_qrcode') != 0) {
$url = $upstream_pc_qr_login.'?'.$request_query;
curl_setopt($ch, CURLOPT_REFERER, $req_referer);
}
elseif (substr_count($request_uri, '/search/type') != 0) {
//搜索接口强制需要buvid3这个cookie,应该与账号无关,访问https://api.bilibili.com/x/frontend/finger/spi可直接获取
if (substr_count($request_query, 'buvid3') != 0)
array_push($headers, "cookie: buvid3=".$queries['buvid3']);
$url = $upstream_pc_search_url.'?'.$request_query;
curl_setopt($ch, CURLOPT_REFERER, $req_referer);
}
elseif(substr_count($request_uri, 'playurl') != 0) {
//判断使用的那个pc还是app接口
if (substr_count($request_query, 'platform=android') != 0) {
$url = $upstream_app_url.'?'.$request_query;
curl_setopt($ch, CURLOPT_USERAGENT, 'Bilibili Freedoooooom/MarkII');
}
//新版本的视频接口
elseif(substr_count($request_uri, '/v2/playurl') != 0) {
$url = $upstream_pc_url_v2.'?'.$request_query;
curl_setopt($ch, CURLOPT_REFERER, $req_referer);
}
else {
$url = $upstream_pc_url.'?'.$request_query;
curl_setopt($ch, CURLOPT_REFERER, $req_referer);
}
}
else {
$header['Content-Type'] = 'text/plain';
return new Response(
502,
$header,
'Failed to match interface.');
}
//curl配置
curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, $request_method);
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
curl_setopt($ch, CURLOPT_POSTFIELDS, $request_body);
curl_setopt($ch, CURLOPT_HEADER, true);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, false);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$response = curl_exec($ch);
$header = array();
if ($response === false) {
$header['Content-Type'] = 'text/plain';
return new Response(
502,
$header,
'Upstream host did not respond.');
} else {
$header_length = curl_getinfo($ch, CURLINFO_HEADER_SIZE);
$response_headers = explode("\n", substr($response, 0, $header_length));
$response_body = substr($response, $header_length);
//处理返回相关header
foreach($response_headers as $n => $response_header) {
//配置返回的body压缩方式
if (strpos($response_header, "Content-Encoding") !== false) {
$response_headers[$n] = "Content-Encoding: identity\n";
}
//删除B站返回的Content-Length,防止浏览器只读取Content-Length长度的数据,造成json不完整
if (strpos($response_header, "Content-Length") !== false) {
unset($response_headers[$n]);
}
//阿里云函数好像会自己添加Access-Control-Allow-Credentials头，删除b站返回的
if (strpos($response_header, "Access-Control-Allow-Credentials") !== false) {
unset($response_headers[$n]);
}
if (strpos($response_header, "Set-Cookie") !== false) {
$response_headers[$n] = str_replace("Domain=bilibili.com","Secure;samesite=none;Domain=".$request->getHeaderLine('Host'),$response_headers[$n]);
}
}
unset($response_header);
//response_headers数组转成key=>value形式
foreach($response_headers as $header_string) {
$header_tmp = explode(': ', $header_string, 2);
if (count($header_tmp) == 2) {
//在Psr7中header是array,key是唯一的,但是set-cookie会存在多个,导致覆盖问题.保留SESSDATA
if ($header_tmp[0] != "Set-Cookie" ) {
$header[$header_tmp[0]] = trim($header_tmp[1]);
}elseif (substr_count($header_tmp[1], 'SESSDATA') != 0) {
$header[$header_tmp[0]] = trim($header_tmp[1]);
}
}
}
curl_close($ch);
// 这行用于调试请求信息
// return new Response(200, array(), json_encode(array('header' => $header, 'body' => $response_body, 'url' => $url, 'response'=>$response, 'curl_headers'=>$curl_response_headers)));
return new Response(
200,
$header,
$response_body);
}
}
/*tool*/
//某个字符串在另一个字符串第N此出现的下标
function str_n_pos($str, $find, $n) {
$pos_val = 0;
for ($i = 1; $i <= $n; $i++) {
$pos = strpos($str, $find);
$str = substr($str, $pos + 1);
$pos_val = $pos + $pos_val + 1;
}
$count = $pos_val - 1;
return $count;
}
function array_remove_by_key($arr, $key) {
if (!array_key_exists($key, $arr)) {
return $arr;
}
$keys = array_keys($arr);
$index = array_search($key, $keys);
if ($index !== FALSE) {
array_splice($arr, $index, 1);
}
return $arr;
}