Extend IRT with nacl_irt_resource_open interface

tests/manifest_file/irt_manifest_file_test.cc

+/*
+ * Copyright (c) 2011 The Native Client Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * found in the LICENSE file.
+ */
+
+//
+// Test for resource open before PPAPI initialization.
+//
+
+#include <stdio.h>
+#include <string.h>
+
+#include <string>
+
+#include "native_client/src/shared/ppapi_proxy/ppruntime.h"
+#include "native_client/src/untrusted/irt/irt.h"
+#include "native_client/src/untrusted/nacl/nacl_irt.h"
+
+#include "ppapi/cpp/instance.h"
+#include "ppapi/cpp/module.h"
+#include "ppapi/cpp/var.h"
+
+std::string str;
+
+void load_manifest(TYPE_nacl_irt_query *query_func) {
+  struct nacl_irt_resource_open nacl_irt_resource_open;
+  if (sizeof(nacl_irt_resource_open) !=
+      (*query_func)(
+          NACL_IRT_RESOURCE_OPEN_v0_0,
+          &nacl_irt_resource_open,
+          sizeof(nacl_irt_resource_open))) {
+    str = "irt manifest api not found";
+    return;
+  }
+  int desc;
+  int error;
+  error = nacl_irt_resource_open.open_resource("files/test_file", &desc);
+  if (0 != error) {
+    str = "Can't open file";
+    printf("Can't open file, error=%d", error);
+    return;
+  }
+
+  str = "File Contents:\n";
+
+  FILE *iob = fdopen(desc, "r");
+  char buffer[4096];
+  while (fgets(buffer, sizeof buffer, iob) != NULL) {
+    // NB: fgets does not discard the newline nor any carriage return
+    // character before that.
+    //
+    // Note that CR LF is the default end-of-line style for Windows.
+    // Furthermore, when the test_file (input data, which happens to
+    // be the nmf file) is initially created in a change list, the
+    // patch is sent to our try bots as text.  This means that when
+    // the file arrives, it has CR LF endings instead of the original
+    // LF line endings.  Since the expected or golden data is
+    // (manually) encoded in the HTML file's JavaScript, there will be
+    // a mismatch.  After submission, the svn property svn:eol-style
+    // will be set to LF, so a clean check out should have LF and not
+    // CR LF endings, and the tests will pass without CR removal.
+    // However -- and there's always a however in long discourses --
+    // if the nmf file is edited, say, because the test is being
+    // modified, and the modification is being done on a Windows
+    // machine, then it is likely that the editor used by the
+    // programmer will convert the file to CR LF endings.  Which,
+    // unfortunatly, implies that the test will mysteriously fail
+    // again.
+    //
+    // To defend against such nonsense, we weaken the test slighty,
+    // and just strip the CR if it is present.
+    int len = strlen(buffer);
+    if (len >= 2 && buffer[len-1] == '\n' && buffer[len-2] == '\r') {
+      buffer[len-2] = '\n';
+      buffer[len-1] = '\0';
+    }
+    str += buffer;
+  }
+  printf("file loaded: %s\n", str.c_str());
+  fclose(iob);  // closed desc
+  return;
+}
+
+class TestInstance : public pp::Instance {
+ public:
+  explicit TestInstance(PP_Instance instance) : pp::Instance(instance) {}
+  virtual ~TestInstance() {}
+  virtual void HandleMessage(const pp::Var& var_message) {
+    if (!var_message.is_string()) {
+      return;
+    }
+    if (var_message.AsString() != "hello") {
+      return;
+    }
+    pp::Var reply = pp::Var(str);
+    PostMessage(reply);
+  }
+};
+
+class TestModule : public pp::Module {
+ public:
+  TestModule() : pp::Module() {}
+  virtual ~TestModule() {}
+
+  virtual pp::Instance* CreateInstance(PP_Instance instance) {
+    return new TestInstance(instance);
+  }
+};
+
+namespace pp {
+Module* CreateModule() {
+  return new TestModule();
+}
+}
+
+int main() {
+  load_manifest(&__nacl_irt_query);
+  return PpapiPluginMain();
+}
+