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[YouTube] Fix n-sig parsing for player c9168c90

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Stypox
2026-01-27 18:55:37 +01:00
parent 92e0250582
commit 8a415cadfd
1 changed files with 25 additions and 9 deletions
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34
extractor/src/main/java/org/schabi/newpipe/extractor/services/youtube/YoutubeSignatureUtils.java
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@@ -1,13 +1,16 @@
package org.schabi.newpipe.extractor.services.youtube;
import static org.schabi.newpipe.extractor.utils.Parser.matchGroup1MultiplePatterns;
import static org.schabi.newpipe.extractor.utils.Parser.matchMultiplePatterns;
import org.schabi.newpipe.extractor.exceptions.ParsingException;
import org.schabi.newpipe.extractor.utils.JavaScript;
import org.schabi.newpipe.extractor.utils.Pair;
import org.schabi.newpipe.extractor.utils.Parser;
import org.schabi.newpipe.extractor.utils.jsextractor.JavaScriptExtractor;
import javax.annotation.Nonnull;
import java.util.regex.Matcher;
import java.util.regex.Pattern;
/**
@@ -24,6 +27,7 @@ final class YoutubeSignatureUtils {
private static final Pattern[] FUNCTION_REGEXES = {
// CHECKSTYLE:OFF
Pattern.compile("\\b(?:[a-zA-Z0-9_$]+)&&\\((?:[a-zA-Z0-9_$]+)=([a-zA-Z0-9_$]{2,})\\((\\d+,)decodeURIComponent\\((?:[a-zA-Z0-9_$]+)\\)\\)"),
Pattern.compile("\\b(?:[a-zA-Z0-9_$]+)&&\\((?:[a-zA-Z0-9_$]+)=([a-zA-Z0-9_$]{2,})\\(decodeURIComponent\\((?:[a-zA-Z0-9_$]+)\\)\\)"),
Pattern.compile("\\bm=([a-zA-Z0-9$]{2,})\\(decodeURIComponent\\(h\\.s\\)\\)"),
Pattern.compile("\\bc&&\\(c=([a-zA-Z0-9$]{2,})\\(decodeURIComponent\\(c\\)\\)"),
@@ -38,8 +42,10 @@ final class YoutubeSignatureUtils {
private static final String DEOBF_FUNC_REGEX_END = "=function\\([a-zA-Z0-9_]+\\)\\{.+?\\})";
// CHECKSTYLE:OFF
private static final String SIG_DEOBF_GLOBAL_ARRAY_REGEX = "(var [A-z]=['\"].*['\"].split\\(\";\"\\))";
private static final String SIG_DEOBF_HELPER_OBJ_NAME_REGEX = ";([A-Za-z0-9_\\$]{2,})\\[..";
private static final Pattern SIG_DEOBF_GLOBAL_ARRAY_REGEX =
Pattern.compile("(var [A-z]=['\"].*['\"].split\\(\"[;{]\"\\))");
private static final Pattern SIG_DEOBF_HELPER_OBJ_NAME_REGEX =
Pattern.compile("[;,]([A-Za-z0-9_$]{2,})\\[..");
private static final String SIG_DEOBF_HELPER_OBJ_REGEX_START = "(var ";
private static final String SIG_DEOBF_HELPER_OBJ_REGEX_END = "=\\{(?>.|\\n)+?\\}\\};)";
// CHECKSTYLE:ON
@@ -76,8 +82,10 @@ final class YoutubeSignatureUtils {
static String getDeobfuscationCode(@Nonnull final String javaScriptPlayerCode)
throws ParsingException {
try {
final String deobfuscationFunctionName = getDeobfuscationFunctionName(
javaScriptPlayerCode);
final Pair<String, String> deobfuscationFunctionNameAndParams =
getDeobfuscationFunctionNameAndParams(javaScriptPlayerCode);
final String deobfuscationFunctionName = deobfuscationFunctionNameAndParams.getFirst();
final String functionAdditionalParams = deobfuscationFunctionNameAndParams.getSecond();
String deobfuscationFunction;
try {
@@ -102,7 +110,7 @@ final class YoutubeSignatureUtils {
final String callerFunction = "function " + DEOBFUSCATION_FUNCTION_NAME
+ "(a){return "
+ deobfuscationFunctionName
+ "(a);}";
+ "(" + functionAdditionalParams + "a);}";
return globalVar + ";" + helperObject + deobfuscationFunction + ";" + callerFunction;
} catch (final Exception e) {
@@ -111,10 +119,18 @@ final class YoutubeSignatureUtils {
}
@Nonnull
private static String getDeobfuscationFunctionName(@Nonnull final String javaScriptPlayerCode)
throws ParsingException {
private static Pair<String, String> getDeobfuscationFunctionNameAndParams(
@Nonnull final String javaScriptPlayerCode) throws ParsingException {
try {
return matchGroup1MultiplePatterns(FUNCTION_REGEXES, javaScriptPlayerCode);
final Matcher m = matchMultiplePatterns(FUNCTION_REGEXES, javaScriptPlayerCode);
final String functionName = m.group(1);
final String functionAdditionalParams;
if (m.groupCount() > 1) {
functionAdditionalParams = m.group(2);
} else {
functionAdditionalParams = "";
}
return new Pair<>(functionName, functionAdditionalParams);
} catch (final Parser.RegexException e) {
throw new ParsingException(
"Could not find deobfuscation function with any of the known patterns", e);