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fix(parser): 蓝奏文件 ajax 优先使用页面里的 apifile 绝对地址

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个性域名文件页把 ajaxfile.php 写到 apifile.lanzouw.com。相对路径打到页面源站会空响应，直链拿不到。绝对地址优先，apifile 放进文件 ajax 兜底且排在四 w 之前；目录列表仍不走 apifile。

Co-authored-by: qaiu <[email protected]>
This commit is contained in:
Cursor Agent
2026-09-25 08:27:58 +00:00
co-authored by qaiu
parent 4d985cc96f
commit 78e53c076e
2 changed files with 169 additions and 19 deletions
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parser/src/main/java/cn/qaiu/parser/impl/LzTool.java
+110 -19
View File
@@ -51,14 +51,28 @@ public class LzTool extends PanBase {
/** 页面 URL 解析失败时的源站兜底，与 {@link #SHARE_URL_PREFIX} 同主机。 */
private static final String SHARE_ORIGIN = "https://w1.lanzn.com";
/**
* 个性域名上 ajaxfile.php / filemoreajax.php 会立刻返回「已超时」。
* POST 失败后按这个顺序换稳定下载域，wwww 只放最后，避免单一主机超时直接失败。
* 目录 filemoreajax.php 换域顺序。个性域名上会立刻返回「已超时」。
* wwww 只放最后，避免单一主机超时直接失败。
* 文件 ajax 走 {@link #FILE_AJAX_FALLBACK_ORIGINS}，不要把 apifile 混进目录列表。
*/
static final List<String> AJAX_FALLBACK_ORIGINS = List.of(
"https://w1.lanzn.com",
"https://www.lanzoux.com",
"https://wwww.lanzoux.com"
);
/**
* 文件页 iframe / 密码页里的 ajaxfile.php 经常是绝对地址
* {@code https://apifile.lanzouw.com/ajaxfile.php?file=…}。
* 相对路径打到页面源站或 w1/www 会空响应。apifile 放在文件 ajax 兜底的最前，
* 页面源站空响应后立刻换过去，不在四 w 上耗光超时。
*/
static final String APIFILE_ORIGIN = "https://apifile.lanzouw.com";
static final List<String> FILE_AJAX_FALLBACK_ORIGINS = List.of(
APIFILE_ORIGIN,
"https://w1.lanzn.com",
"https://www.lanzoux.com",
"https://wwww.lanzoux.com"
);
/** 分享页 / ajax 请求超时 */
private static final long REQUEST_TIMEOUT = 8000;
/** 下载域跳转与二次验证超时，链路更长 */
@@ -69,6 +83,10 @@ public class LzTool extends PanBase {
private static final Pattern P_AJAXDATA = Pattern.compile("ajaxdata\\s*=\\s*'([^']+)'");
private static final Pattern P_WEBSIGN = Pattern.compile("'websign'\\s*:\\s*'([^']*)'");
private static final Pattern P_WEBPAGE = Pattern.compile("[?&]webpage=([^&\"'\\s#]+)");
/** 页面脚本里的绝对 ajax，例如 https://apifile.lanzouw.com/ajaxfile.php?file=123 */
private static final Pattern P_AJAX_ABSOLUTE = Pattern.compile(
"['\"]((?:https?:)?//[^'\"\\s<>]+/ajax(?:m|file)\\.php\\?file=\\d+)['\"]",
Pattern.CASE_INSENSITIVE);
private static final Pattern P_AJAX_PATH = Pattern.compile("(?:['\"/]|^)(ajax(?:m|file)\\.php\\?file=\\d+)");
private static final Pattern P_SIGN = Pattern.compile("'sign'\\s*:\\s*'([^']+)'");
private static final Pattern P_ISNGIS = Pattern.compile("var\\s+isngis\\s*=\\s*'([^']+)'");
@@ -335,23 +353,73 @@ public class LzTool extends PanBase {
}
/**
* ajax / filemore 的 POST 主机顺序：分享页源站优先（普通节点通常可用），
* 目录 filemore 的 POST 主机顺序：分享页源站优先（普通节点通常可用），
* 然后是稳定下载域。wwww.lanzoux.com 固定排在最后。
*/
static List<String> ajaxOrigins(String pageUrl) {
List<String> origins = new ArrayList<>();
String pageOrigin = normalizeOrigin(originOf(pageUrl, ""));
if (pageOrigin.contains("://")) {
origins.add(pageOrigin);
}
addAjaxOrigin(origins, normalizeOrigin(originOf(pageUrl, "")));
for (String candidate : AJAX_FALLBACK_ORIGINS) {
if (!origins.contains(candidate)) {
origins.add(candidate);
}
addAjaxOrigin(origins, candidate);
}
return origins;
}
/**
* 文件 ajax 主机顺序。页面里若写出绝对 ajax URL，该主机最先尝试；
* 否则先打页面源站。空响应后再试 {@link #APIFILE_ORIGIN}，四 w 仍在最后。
*
* @param ajaxTarget {@link #fileAjaxTarget} 的返回值，绝对 URL 或相对路径；可为 null
*/
static List<String> fileAjaxOrigins(String pageUrl, String ajaxTarget) {
List<String> origins = new ArrayList<>();
addAjaxOrigin(origins, originFromAjaxTarget(ajaxTarget));
addAjaxOrigin(origins, normalizeOrigin(originOf(pageUrl, "")));
for (String candidate : FILE_AJAX_FALLBACK_ORIGINS) {
addAjaxOrigin(origins, candidate);
}
return origins;
}
/**
* 从分享页或 iframe HTML 取出文件 ajax 地址。
* 绝对 URL（含协议相对 {@code //host/...}）原样返回；否则返回以 {@code /} 开头的相对路径。
*/
static String fileAjaxTarget(String html) {
if (html == null || html.isEmpty()) {
return null;
}
Matcher abs = P_AJAX_ABSOLUTE.matcher(html);
if (abs.find()) {
String url = abs.group(1);
if (url.startsWith("//")) {
url = "https:" + url;
}
return url;
}
Matcher ajax = P_AJAX_PATH.matcher(html);
if (!ajax.find()) {
return null;
}
return "/" + ajax.group(1);
}
private static void addAjaxOrigin(List<String> origins, String origin) {
if (origin != null && origin.contains("://") && !origins.contains(origin)) {
origins.add(origin);
}
}
private static String originFromAjaxTarget(String ajaxTarget) {
if (ajaxTarget == null) {
return "";
}
if (ajaxTarget.startsWith("http://") || ajaxTarget.startsWith("https://")) {
return normalizeOrigin(originOf(ajaxTarget, ""));
}
return "";
}
private static String normalizeOrigin(String origin) {
if (origin == null) {
return "";
@@ -532,8 +600,12 @@ public class LzTool extends PanBase {
return true;
}
/** 页面里提取出的 ajax 调用：相对路径 + 表单参数。 */
private record AjaxCall(String path, Map<String, String> form) {
/** 页面里提取出的 ajax 调用。absoluteUrl 非空时优先打该主机。 */
private record AjaxCall(String path, Map<String, String> form, String absoluteUrl) {
private AjaxCall(String path, Map<String, String> form) {
this(path, form, null);
}
MultiMap toForm() {
MultiMap m = MultiMap.caseInsensitiveMultiMap();
form.forEach(m::set);
@@ -545,11 +617,12 @@ public class LzTool extends PanBase {
if (html == null || html.isEmpty()) {
return null;
}
Matcher ajax = P_AJAX_PATH.matcher(html);
if (!ajax.find()) {
String target = fileAjaxTarget(html);
if (target == null) {
return null;
}
String ajaxPath = ajax.group(1);
String absolute = target.startsWith("http://") || target.startsWith("https://") ? target : null;
String ajaxPath = absolute == null ? target : pathOfAbsolute(absolute);
Map<String, String> data = new LinkedHashMap<>();
data.put("action", "downprocess");
Matcher wp = P_WP_SIGN.matcher(html);
@@ -603,7 +676,23 @@ public class LzTool extends PanBase {
data.put("signs", ad2.group(1));
}
}
return new AjaxCall("/" + ajaxPath, data);
return new AjaxCall(ajaxPath, data, absolute);
}
private static String pathOfAbsolute(String url) {
try {
URL u = new URL(url);
String path = u.getPath() == null ? "" : u.getPath();
if (u.getQuery() != null && !u.getQuery().isEmpty()) {
path = path + "?" + u.getQuery();
}
if (!path.startsWith("/")) {
path = "/" + path;
}
return path;
} catch (Exception e) {
return url;
}
}
private static AjaxCall extractFolderAjax(String html, String pwd) {
@@ -697,11 +786,13 @@ public class LzTool extends PanBase {
private void getDownURL(String referer, AjaxCall call) {
MultiMap headers = HeaderUtils.parseHeaders(DOWN_AJAX_HEADERS);
// 个性域名 ajaxfile.php 会立刻 inf=已超时。先打页面源站，失败再换稳定下载域。
// iframe 的 Referer 仍用 iframe 地址，不把页面 GET 改写到 wwww。
// 文件 ajax 优先用页面里的绝对地址（常见 apifile.lanzouw.com）。
// 页面源站空响应再换 FILE_AJAX_FALLBACK_ORIGINS，wwww 仍在最后。
// iframe / 分享页的 Referer 保持原主机，不把页面 GET 改写到 wwww。
String page = referer != null && !referer.isBlank() ? referer : resolveShareUrl();
headers.set("referer", page);
postAjaxWithFallback(page, call, headers, this::handleAjaxDownResponse, null);
String target = call.absoluteUrl() != null ? call.absoluteUrl() : call.path();
postAjaxAt(fileAjaxOrigins(page, target), 0, call, headers, this::handleAjaxDownResponse, null);
}
/**
parser/src/test/java/cn/qaiu/parser/impl/LzToolShareUrlTest.java
+59
View File
@@ -116,4 +116,63 @@ public class LzToolShareUrlTest {
LzTool.sharePageHostBase("https://w1.lanzn.com/-", "https://w1.lanzn.com/-"));
assertFalse(LzTool.sharePageHostBase("https://a.lanzouw.com/b123", null).contains("wwww"));
}
@Test
public void absoluteAjaxUrlIsKeptAndTriedFirst() {
String html = """
url : 'https://apifile.lanzouw.com/ajaxfile.php?file=320665771',
data : { 'action':'downprocess','sign':isngis,'kd':kdns,'p':pwd, },
""";
String target = LzTool.fileAjaxTarget(html);
assertEquals("https://apifile.lanzouw.com/ajaxfile.php?file=320665771", target);
List<String> origins = LzTool.fileAjaxOrigins(
"https://wwaqg.lanzouu.com/iqouM49vy9ib", target);
assertEquals("https://apifile.lanzouw.com", origins.get(0));
assertTrue(origins.contains("https://wwaqg.lanzouu.com"));
assertEquals("https://wwww.lanzoux.com", origins.get(origins.size() - 1));
assertTrue(origins.indexOf("https://apifile.lanzouw.com")
< origins.indexOf("https://wwaqg.lanzouu.com"));
assertTrue(origins.indexOf("https://wwww.lanzoux.com")
> origins.indexOf("https://w1.lanzn.com"));
assertEquals(1, origins.stream().filter("https://apifile.lanzouw.com"::equals).count());
}
@Test
public void protocolRelativeAjaxBecomesHttps() {
String html = "url : '//apifile.lanzouw.com/ajaxfile.php?file=9',";
assertEquals("https://apifile.lanzouw.com/ajaxfile.php?file=9", LzTool.fileAjaxTarget(html));
}
@Test
public void absoluteAjaxWinsOverRelativePathInSamePage() {
String html = """
//data : { url : '/ajaxfile.php?file=1' }
url : "https://apifile.lanzouw.com/ajaxm.php?file=42",
""";
assertEquals("https://apifile.lanzouw.com/ajaxm.php?file=42", LzTool.fileAjaxTarget(html));
}
@Test
public void relativeFileAjaxFallsThroughToApifileBeforeWwww() {
String html = "url : '/ajaxfile.php?file=150233466',";
assertEquals("/ajaxfile.php?file=150233466", LzTool.fileAjaxTarget(html));
List<String> origins = LzTool.fileAjaxOrigins("https://a.lanzouw.com/xxx", LzTool.fileAjaxTarget(html));
assertEquals("https://a.lanzouw.com", origins.get(0));
assertEquals("https://apifile.lanzouw.com", origins.get(1));
assertEquals("https://wwww.lanzoux.com", origins.get(origins.size() - 1));
assertTrue(origins.indexOf("https://apifile.lanzouw.com")
< origins.indexOf("https://wwww.lanzoux.com"));
assertFalse(LzTool.ajaxOrigins("https://a.lanzouw.com/xxx").contains("https://apifile.lanzouw.com"));
}
@Test
public void missingAjaxTargetStillPutsApifileBeforeWwww() {
List<String> origins = LzTool.fileAjaxOrigins("https://www.lanzoux.com/ihLkw1gezutg", null);
assertEquals("https://www.lanzoux.com", origins.get(0));
assertEquals("https://apifile.lanzouw.com", origins.get(1));
assertEquals("https://wwww.lanzoux.com", origins.get(origins.size() - 1));
assertFalse(origins.get(0).contains("wwww"));
}
}