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aliyun_tw.php
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aliyun_tw.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_app_url = 'https://api.bilibili.com/pgc/player/api/playurl';
$upstream_pc_search_url = 'https://api.bilibili.com/x/web-interface/search/type';
$upstream_web_interface_view = 'https://api.bilibili.com/x/web-interface/view';
$upstream_pgc_view_web_season = 'https://api.bilibili.com/pgc/view/web/season';
$upstream_biliapi_net_playurl = 'https://grpc.biliapi.net/bilibili.app.playurl.v1.PlayURL/PlayView';
$upstream_bilibili_com_playurl = 'https://app.bilibili.com/bilibili.pgc.gateway.player.v1.PlayURL/PlayView';
$timeout = 5; // seconds
/* Read incoming request */
$request_method = $request->getMethod();
$request_query = substr(stristr($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,'/search/type')!=0){
$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');
}else{
$url = $upstream_pc_url . '?' .$request_query;
curl_setopt($ch, CURLOPT_REFERER, $req_referer);
}
}elseif (substr_count($request_uri,'/web-interface/view')!=0){
$url = $upstream_web_interface_view . '?' .$request_query;
curl_setopt($ch, CURLOPT_REFERER, $req_referer);
}elseif (substr_count($request_uri,'/pgc/view/web/season')!=0){
$url = $upstream_pgc_view_web_season . '?' .$request_query;
curl_setopt($ch, CURLOPT_REFERER, $req_referer);
}elseif (substr_count($request_uri,'/bilibili.app.playurl.v1.PlayURL/PlayView')!=0){
$url = $upstream_biliapi_net_playurl . '?' .$request_query;
curl_setopt($ch, CURLOPT_REFERER, $req_referer);
}elseif (substr_count($request_uri,'/bilibili.pgc.gateway.player.v1.PlayURL/PlayView')!=0){
$url = $upstream_bilibili_com_playurl . '?' .$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]);
}
}
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) {
$header[$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;
}