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Follow meta redirects and use the final URL when processing documents (#1568)

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This commit is contained in:
Martynas Bagdonas 2018-10-04 10:24:39 +08:00 • committed by Dan Stillman
parent a59ce2c343
commit ec5424d5ae
2 changed files with 68 additions and 2 deletions
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46
chrome/content/zotero/xpcom/http.js
View file

@ -355,6 +355,48 @@ Zotero.HTTP = new function() {
if (options.debug) {
Zotero.debug(xmlhttp.responseText);
}
// Follow meta redirects
if (options.responseType === 'document' &&
(!options.numRedirects || options.numRedirects < 3)) {
let contentType = xmlhttp.getResponseHeader('Content-Type');
if (contentType && contentType.startsWith('text/html')) {
let meta = xmlhttp.response.querySelector('meta[http-equiv="refresh" i]');
if (meta) {
let content = meta.getAttribute('content');
if (content) {
let parts = content.split(/;\s*url=/);
// If there's a redirect to another URL in less than 15 seconds,
// follow it
if (parts.length === 2 && parseInt(parts[0]) <= 15) {
let url = parts[1].trim().replace(/^'(.+)'/, '$1');
// Resolve URL. P.S.: For unknown reason this only works
// if server returns 'Content-Type: text/html' header
let a = xmlhttp.response.createElement('a');
a.href = url;
let resolvedUrl = a.href;
// Make sure the absolute URL is actually resolved
if (/^https?:\/\//.test(resolvedUrl)) {
if (options.numRedirects) {
options.numRedirects++;
}
else {
options.numRedirects = 1;
}
// Meta redirect is always GET
return Zotero.HTTP.request("GET", resolvedUrl, options)
.then(xmlhttp => deferred.resolve(xmlhttp))
.catch(e => deferred.reject(e));
}
}
}
}
}
}
deferred.resolve(xmlhttp);
} else {
let msg = "HTTP " + method + " " + dispURL + " failed with status code " + status;
@ -863,8 +905,8 @@ Zotero.HTTP = new function() {
}
)
.then((xhr) => {
var doc = this.wrapDocument(xhr.response, url);
return processor(doc, url);
var doc = this.wrapDocument(xhr.response, xhr.responseURL);
return processor(doc, xhr.responseURL);
});
});

24
test/tests/httpTest.js
View file

@ -29,6 +29,16 @@ describe("Zotero.HTTP", function () {
}
}
);
httpd.registerPathHandler(
'/test-redirect.html',
{
handle: function (request, response) {
response.setHeader("Content-Type", 'text/html', false);
response.setStatusLine(null, 200, "OK");
response.write("<html><head><meta http-equiv=\"refresh\" content=\"2;url=test.html\"/></head><body></body></html>");
}
}
);
});
after(function* () {
@ -68,6 +78,20 @@ describe("Zotero.HTTP", function () {
);
assert.isTrue(called);
});
it("should follow meta redirect for a document", async function () {
let url1 = `http://127.0.0.1:${port}/test-redirect.html`;
let url2 = `http://127.0.0.1:${port}/test.html`;
let called = false;
await Zotero.HTTP.processDocuments(
url1,
function (doc) {
assert.equal(doc.location.href, url2);
called = true;
}
);
assert.isTrue(called);
});
});
describe("#loadDocuments()", function () {