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add apple music auto token extraction (#242)
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main/src/main/java/com/github/topi314/lavasrc/applemusic/AppleMusicTokenManager.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,113 @@ | ||
| package com.github.topi314.lavasrc.applemusic; | ||
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| import com.sedmelluq.discord.lavaplayer.tools.JsonBrowser; | ||
| import org.apache.commons.io.IOUtils; | ||
| import org.apache.http.client.methods.HttpGet; | ||
| import org.apache.http.impl.client.CloseableHttpClient; | ||
| import org.apache.http.impl.client.HttpClients; | ||
| import org.jsoup.Jsoup; | ||
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| import java.io.IOException; | ||
| import java.nio.charset.StandardCharsets; | ||
| import java.time.Instant; | ||
| import java.util.Base64; | ||
| import java.util.regex.Pattern; | ||
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| public class AppleMusicTokenManager { | ||
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| private static final Pattern TOKEN_PATTERN = Pattern.compile("ey[\\w-]+\\.[\\w-]+\\.[\\w-]+"); | ||
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| private Token token; | ||
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| public AppleMusicTokenManager(String mediaAPIToken) throws IOException { | ||
| if (mediaAPIToken == null || mediaAPIToken.isEmpty()) { | ||
| this.fetchNewToken(); | ||
| } else { | ||
| this.parseTokenData(mediaAPIToken); | ||
| } | ||
| } | ||
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| public Token getToken() throws IOException { | ||
| if (this.token.isExpired()) { | ||
| this.fetchNewToken(); | ||
| } | ||
| return this.token; | ||
| } | ||
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| public void setToken(String mediaAPIToken) throws IOException { | ||
| this.parseTokenData(mediaAPIToken); | ||
| } | ||
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| private void parseTokenData(String mediaAPIToken) throws IOException { | ||
| if (mediaAPIToken == null || mediaAPIToken.isEmpty()) { | ||
| throw new IllegalArgumentException("Invalid token provided."); | ||
| } | ||
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| var parts = mediaAPIToken.split("\\."); | ||
| if (parts.length < 3) { | ||
| throw new IllegalArgumentException("Invalid token provided must have 3 parts separated by '.'"); | ||
| } | ||
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| var payload = new String(Base64.getDecoder().decode(parts[1]), StandardCharsets.UTF_8); | ||
| var json = JsonBrowser.parse(payload); | ||
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| this.token = new Token(mediaAPIToken, json.get("root_https_origin").index(0).text(), Instant.ofEpochSecond(json.get("exp").asLong(0))); | ||
| } | ||
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| private void fetchNewToken() throws IOException { | ||
| try (var httpClient = HttpClients.createDefault()) { | ||
| var mainPageHtml = fetchHtml(httpClient, "https://music.apple.com"); | ||
| var tokenScriptUrl = extractTokenScriptUrl(mainPageHtml); | ||
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| if (tokenScriptUrl == null) { | ||
| throw new IllegalStateException("Failed to locate token script URL."); | ||
| } | ||
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| var tokenScriptContent = fetchHtml(httpClient, tokenScriptUrl); | ||
| var tokenMatcher = TOKEN_PATTERN.matcher(tokenScriptContent); | ||
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| if (!tokenMatcher.find()) { | ||
| throw new IllegalStateException("Failed to extract token from script content."); | ||
| } | ||
| this.parseTokenData(tokenMatcher.group()); | ||
| } | ||
| } | ||
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| private String fetchHtml(CloseableHttpClient httpClient, String url) throws IOException { | ||
| var request = new HttpGet(url); | ||
| try (var response = httpClient.execute(request)) { | ||
| if (response.getStatusLine().getStatusCode() != 200) { | ||
| throw new IOException("Failed to fetch URL: " + url + ". Status code: " + response.getStatusLine().getStatusCode()); | ||
| } | ||
| return IOUtils.toString(response.getEntity().getContent(), StandardCharsets.UTF_8); | ||
| } | ||
| } | ||
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| private String extractTokenScriptUrl(String html) { | ||
| var document = Jsoup.parse(html, "https://music.apple.com"); | ||
| return document.select("script[type=module][src~=/assets/index.*.js]") | ||
| .stream() | ||
| .findFirst() | ||
| .map(element -> "https://music.apple.com" + element.attr("src")) | ||
| .orElseThrow(() -> new IllegalStateException("Failed to find token script URL in the provided HTML.")); | ||
| } | ||
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| public static class Token { | ||
| public final String apiToken; | ||
| public final String origin; | ||
| public final Instant expire; | ||
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| public Token(String apiToken, String origin, Instant expire) { | ||
| this.apiToken = apiToken; | ||
| this.origin = origin; | ||
| this.expire = expire; | ||
| } | ||
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| private boolean isExpired() { | ||
| if (this.apiToken == null || this.expire == null) { | ||
| return true; | ||
| } | ||
| return expire.minusSeconds(5).isBefore(Instant.now()); | ||
| } | ||
| } | ||
| } |