From addc5a14a93547f630f23e5b6a79cffa2e37d71a Mon Sep 17 00:00:00 2001
From: lolcat <will@lolcat.ca>
Date: Sat, 17 Feb 2024 23:22:19 -0500
Subject: boobs

---
 audio/spotify.php | 214 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 214 insertions(+)
 create mode 100644 audio/spotify.php

(limited to 'audio/spotify.php')

diff --git a/audio/spotify.php b/audio/spotify.php
new file mode 100644
index 0000000..dc8fae6
--- /dev/null
+++ b/audio/spotify.php
@@ -0,0 +1,214 @@
+<?php
+
+include "../data/config.php";
+new spotify();
+
+class spotify{
+	
+	public function __construct(){
+		
+		include "../lib/fuckhtml.php";
+		$this->fuckhtml = new fuckhtml();
+		
+		if(
+			!isset($_GET["s"]) ||
+			!preg_match(
+				'/^(track|episode)\.([A-Za-z0-9]{22})$/',
+				$_GET["s"],
+				$matches
+			)
+		){
+			
+			$this->do404("The track ID(s) parameter is missing or invalid");
+		}
+		
+		try{
+			
+			if($matches[1] == "episode"){
+				
+				$uri = "show";
+			}else{
+				
+				$uri = $matches[1];
+			}
+			
+			$embed =
+				$this->get("https://embed.spotify.com/{$uri}/" . $matches[2]);
+		}catch(Exception $error){
+			
+			$this->do404("Failed to fetch embed data");
+		}
+		
+		$this->fuckhtml->load($embed);
+		
+		$json =
+			$this->fuckhtml
+			->getElementById(
+				"__NEXT_DATA__",
+				"script"
+			);
+		
+		if($json === null){
+			
+			$this->do404("Failed to extract JSON");
+		}
+		
+		$json =
+			json_decode($json["innerHTML"], true);
+		
+		if($json === null){
+			
+			$this->do404("Failed to decode JSON");
+		}
+		
+		switch($matches[1]){
+			
+			case "track":
+				if(
+					isset(
+						$json
+						["props"]
+						["pageProps"]
+						["state"]
+						["data"]
+						["entity"]
+						["audioPreview"]
+						["url"]
+					)
+				){
+					
+					header("Content-type: audio/mpeg");
+					header(
+						"Location: /audio/linear?s=" .
+						urlencode(
+							$json
+							["props"]
+							["pageProps"]
+							["state"]
+							["data"]
+							["entity"]
+							["audioPreview"]
+							["url"]
+						)
+					);
+				}else{
+					
+					$this->do404("Could not extract playback URL");
+				}
+				break;
+			
+			case "episode":
+				if(
+					isset(
+						$json
+						["props"]
+						["pageProps"]
+						["state"]
+						["data"]
+						["entity"]
+						["id"]
+					)
+				){
+					
+					try{
+						$json =
+							$this->get(
+								"https://spclient.wg.spotify.com/soundfinder/v1/unauth/episode/" .
+								$json
+								["props"]
+								["pageProps"]
+								["state"]
+								["data"]
+								["entity"]
+								["id"] .
+								"/com.widevine.alpha"
+							);
+					}catch(Exception $error){
+						
+						$this->do404("Failed to fetch audio resource");
+					}
+					
+					$json = json_decode($json, true);
+					
+					if($json === null){
+						
+						$this->do404("Failed to decode audio resource JSON");
+					}
+					
+					if(
+						isset($json["passthrough"]) &&
+						$json["passthrough"] == "ALLOWED" &&
+						isset($json["passthroughUrl"])
+					){
+						
+						header(
+							"Location:" .
+							"/audio/linear.php?s=" .
+							urlencode(
+								str_replace(
+									"http://",
+									"https://",
+									$json["passthroughUrl"]
+								)
+							)
+						);
+					}else{
+						
+						$this->do404("Failed to find passthroughUrl");
+					}
+					
+				}else{
+					
+					$this->do404("Failed to find episode ID");
+				}
+				break;
+			}
+	}
+	
+	private function get($url){
+		
+		$headers = [
+			"User-Agent: " . config::USER_AGENT,
+			"Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,*/*;q=0.8",
+			"Accept-Language: en-US,en;q=0.5",
+			"Accept-Encoding: gzip",
+			"DNT: 1",
+			"Connection: keep-alive",
+			"Upgrade-Insecure-Requests: 1",
+			"Sec-Fetch-Dest: document",
+			"Sec-Fetch-Mode: navigate",
+			"Sec-Fetch-Site: none",
+			"Sec-Fetch-User: ?1"
+		];
+		
+		$curlproc = curl_init();
+		
+		curl_setopt($curlproc, CURLOPT_URL, $url);
+		
+		curl_setopt($curlproc, CURLOPT_ENCODING, ""); // default encoding
+		curl_setopt($curlproc, CURLOPT_HTTPHEADER, $headers);
+		
+		curl_setopt($curlproc, CURLOPT_RETURNTRANSFER, true);
+		curl_setopt($curlproc, CURLOPT_SSL_VERIFYHOST, 2);
+		curl_setopt($curlproc, CURLOPT_SSL_VERIFYPEER, true);
+		curl_setopt($curlproc, CURLOPT_CONNECTTIMEOUT, 30);
+		curl_setopt($curlproc, CURLOPT_TIMEOUT, 30);
+		
+		$data = curl_exec($curlproc);
+		
+		if(curl_errno($curlproc)){
+			throw new Exception(curl_error($curlproc));
+		}
+		
+		curl_close($curlproc);
+		return $data;
+	}
+	
+	private function do404($error){
+		
+		http_response_code(404);
+		header("Content-Type: text/plain");
+		header("X-Error: $error");
+		die();
+	}
+}
-- 
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