1 files changed, 152 insertions, 0 deletions
diff --git a/netwerk/test/unit/test_mismatch_last-modified.js b/netwerk/test/unit/test_mismatch_last-modified.js
new file mode 100644
index 0000000000..bcbf0c8b11
--- /dev/null
+++ b/netwerk/test/unit/test_mismatch_last-modified.js
@@ -0,0 +1,152 @@
+"use strict";
+
+const BinaryInputStream = Components.Constructor(
+  "@mozilla.org/binaryinputstream;1",
+  "nsIBinaryInputStream",
+  "setInputStream"
+);
+
+const { HttpServer } = ChromeUtils.import("resource://testing-common/httpd.js");
+var httpserver = new HttpServer();
+
+// Test the handling of a cache revalidation with mismatching last-modified
+// headers. If we get such a revalidation the cache entry should be purged.
+// see bug 717350
+
+// In this test the wrong data is from 11-16-1994 with a value of 'A',
+// and the right data is from 11-15-1994 with a value of 'B'.
+
+// the same URL is requested 3 times. the first time the wrong data comes
+// back, the second time that wrong data is revalidated with a 304 but
+// a L-M header of the right data (this triggers a cache purge), and
+// the third time the right data is returned.
+
+var listener_3 = {
+  // this listener is used to process the the request made after
+  // the cache invalidation. it expects to see the 'right data'
+
+  QueryInterface: ChromeUtils.generateQI([
+    "nsIStreamListener",
+    "nsIRequestObserver",
+  ]),
+
+  onStartRequest: function test_onStartR(request) {},
+
+  onDataAvailable: function test_ODA(request, inputStream, offset, count) {
+    var data = new BinaryInputStream(inputStream).readByteArray(count);
+
+    Assert.equal(data[0], "B".charCodeAt(0));
+  },
+
+  onStopRequest: function test_onStopR(request, status) {
+    httpserver.stop(do_test_finished);
+  },
+};
+
+XPCOMUtils.defineLazyGetter(this, "listener_2", function() {
+  return {
+    // this listener is used to process the revalidation of the
+    // corrupted cache entry. its revalidation prompts it to be cleaned
+
+    QueryInterface: ChromeUtils.generateQI([
+      "nsIStreamListener",
+      "nsIRequestObserver",
+    ]),
+
+    onStartRequest: function test_onStartR(request) {},
+
+    onDataAvailable: function test_ODA(request, inputStream, offset, count) {
+      var data = new BinaryInputStream(inputStream).readByteArray(count);
+
+      // This is 'A' from a cache revalidation, but that reval will clean the cache
+      // because of mismatched last-modified response headers
+
+      Assert.equal(data[0], "A".charCodeAt(0));
+    },
+
+    onStopRequest: function test_onStopR(request, status) {
+      request.QueryInterface(Ci.nsIHttpChannel);
+      var chan = NetUtil.newChannel({
+        uri: "http://localhost:" + httpserver.identity.primaryPort + "/test1",
+        loadUsingSystemPrincipal: true,
+      });
+      chan.asyncOpen(listener_3);
+    },
+  };
+});
+
+XPCOMUtils.defineLazyGetter(this, "listener_1", function() {
+  return {
+    // this listener processes the initial request from a empty cache.
+    // the server responds with the wrong data ('A')
+
+    QueryInterface: ChromeUtils.generateQI([
+      "nsIStreamListener",
+      "nsIRequestObserver",
+    ]),
+
+    onStartRequest: function test_onStartR(request) {},
+
+    onDataAvailable: function test_ODA(request, inputStream, offset, count) {
+      var data = new BinaryInputStream(inputStream).readByteArray(count);
+      Assert.equal(data[0], "A".charCodeAt(0));
+    },
+
+    onStopRequest: function test_onStopR(request, status) {
+      request.QueryInterface(Ci.nsIHttpChannel);
+      var chan = NetUtil.newChannel({
+        uri: "http://localhost:" + httpserver.identity.primaryPort + "/test1",
+        loadUsingSystemPrincipal: true,
+      });
+      chan.asyncOpen(listener_2);
+    },
+  };
+});
+
+function run_test() {
+  do_get_profile();
+
+  evict_cache_entries();
+
+  httpserver.registerPathHandler("/test1", handler);
+  httpserver.start(-1);
+
+  var port = httpserver.identity.primaryPort;
+  var chan = NetUtil.newChannel({
+    uri: "http://localhost:" + port + "/test1",
+    loadUsingSystemPrincipal: true,
+  });
+  chan.asyncOpen(listener_1);
+
+  do_test_pending();
+}
+
+var iter = 0;
+function handler(metadata, response) {
+  iter++;
+  if (metadata.hasHeader("If-Modified-Since")) {
+    response.setStatusLine(metadata.httpVersion, 304, "Not Modified");
+    response.setHeader("Last-Modified", "Tue, 15 Nov 1994 12:45:26 GMT", false);
+  } else {
+    response.setStatusLine(metadata.httpVersion, 200, "OK");
+    response.setHeader("Cache-Control", "max-age=0", false);
+    if (iter == 1) {
+      // simulated wrong response
+      response.setHeader(
+        "Last-Modified",
+        "Wed, 16 Nov 1994 00:00:00 GMT",
+        false
+      );
+      response.bodyOutputStream.write("A", 1);
+    }
+    if (iter == 3) {
+      // 'correct' response
+      response.setHeader(
+        "Last-Modified",
+        "Tue, 15 Nov 1994 12:45:26 GMT",
+        false
+      );
+      response.bodyOutputStream.write("B", 1);
+    }
+  }
+}