Rename omaha_client and similar tokens to update_client in all contexts.

This is a mechanical change.

The idea here is to refactor the common code involved in installing
components and extensions in a common module. In the future, we want
more update-related Chrome stuff to go in this module.
Therefore, it is desirable that this module have a name that describes
its purpose.

BUG=445949

Review URL: https://codereview.chromium.org/803313003

Cr-Commit-Position: refs/heads/master@{#310022}

8 files changed, 315 insertions, 0 deletions

diff --git a/components/update_client/BUILD.gn b/components/update_client/BUILD.gn
new file mode 100644
index 0000000..d51bd9d
--- /dev/null
+++ b/components/update_client/BUILD.gn
@@ -0,0 +1,16 @@
+# Copyright 2014 The Chromium Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
+source_set("update_client") {
+  sources = [
+    "update_query_params.cc",
+    "update_query_params.h",
+    "update_query_params_delegate.cc",
+    "update_query_params_delegate.h",
+  ]
+
+  deps = [
+    "//base",
+  ]
+}
diff --git a/components/update_client/DEPS b/components/update_client/DEPS
new file mode 100644
index 0000000..beabace
--- /dev/null
+++ b/components/update_client/DEPS
@@ -0,0 +1,4 @@
+include_rules = [
+  "+base",
+  "+testing",
+]
diff --git a/components/update_client/OWNERS b/components/update_client/OWNERS
new file mode 100644
index 0000000..c089b54
--- /dev/null
+++ b/components/update_client/OWNERS
@@ -0,0 +1,2 @@
+asargent@chromium.org
+cpu@chromium.org
diff --git a/components/update_client/update_query_params.cc b/components/update_client/update_query_params.cc
new file mode 100644
index 0000000..7bb4db5
--- /dev/null
+++ b/components/update_client/update_query_params.cc
@@ -0,0 +1,131 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "components/update_client/update_query_params.h"
+
+#include "base/compiler_specific.h"
+#include "base/logging.h"
+#include "base/strings/stringprintf.h"
+#include "base/win/windows_version.h"
+#include "components/update_client/update_query_params_delegate.h"
+
+namespace update_client {
+
+namespace {
+
+const char kUnknown[] = "unknown";
+
+// The request extra information is the OS and architecture, this helps
+// the server select the right package to be delivered.
+const char kOs[] =
+#if defined(OS_MACOSX)
+    "mac";
+#elif defined(OS_WIN)
+    "win";
+#elif defined(OS_ANDROID)
+    "android";
+#elif defined(OS_CHROMEOS)
+    "cros";
+#elif defined(OS_LINUX)
+    "linux";
+#elif defined(OS_OPENBSD)
+    "openbsd";
+#else
+#error "unknown os"
+#endif
+
+const char kArch[] =
+#if defined(__amd64__) || defined(_WIN64)
+    "x64";
+#elif defined(__i386__) || defined(_WIN32)
+    "x86";
+#elif defined(__arm__)
+    "arm";
+#elif defined(__aarch64__)
+    "arm64";
+#elif defined(__mips__)
+    "mipsel";
+#else
+#error "unknown arch"
+#endif
+
+const char kChrome[] = "chrome";
+
+#if defined(GOOGLE_CHROME_BUILD)
+const char kChromeCrx[] = "chromecrx";
+#else
+const char kChromiumCrx[] = "chromiumcrx";
+#endif  // defined(GOOGLE_CHROME_BUILD)
+
+UpdateQueryParamsDelegate* g_delegate = NULL;
+
+}  // namespace
+
+// static
+std::string UpdateQueryParams::Get(ProdId prod) {
+  return base::StringPrintf(
+      "os=%s&arch=%s&nacl_arch=%s&prod=%s%s", kOs, kArch, GetNaclArch(),
+      GetProdIdString(prod),
+      g_delegate ? g_delegate->GetExtraParams().c_str() : "");
+}
+
+// static
+const char* UpdateQueryParams::GetProdIdString(UpdateQueryParams::ProdId prod) {
+  switch (prod) {
+    case UpdateQueryParams::CHROME:
+      return kChrome;
+      break;
+    case UpdateQueryParams::CRX:
+#if defined(GOOGLE_CHROME_BUILD)
+      return kChromeCrx;
+#else
+      return kChromiumCrx;
+#endif
+      break;
+  }
+  return kUnknown;
+}
+
+// static
+const char* UpdateQueryParams::GetOS() {
+  return kOs;
+}
+
+// static
+const char* UpdateQueryParams::GetArch() {
+  return kArch;
+}
+
+// static
+const char* UpdateQueryParams::GetNaclArch() {
+#if defined(ARCH_CPU_X86_FAMILY)
+#if defined(ARCH_CPU_X86_64)
+  return "x86-64";
+#elif defined(OS_WIN)
+  bool x86_64 = (base::win::OSInfo::GetInstance()->wow64_status() ==
+                 base::win::OSInfo::WOW64_ENABLED);
+  return x86_64 ? "x86-64" : "x86-32";
+#else
+  return "x86-32";
+#endif
+#elif defined(ARCH_CPU_ARMEL)
+  return "arm";
+#elif defined(ARCH_CPU_ARM64)
+  return "arm64";
+#elif defined(ARCH_CPU_MIPSEL)
+  return "mips32";
+#else
+// NOTE: when adding new values here, please remember to update the
+// comment in the .h file about possible return values from this function.
+#error "You need to add support for your architecture here"
+#endif
+}
+
+// static
+void UpdateQueryParams::SetDelegate(UpdateQueryParamsDelegate* delegate) {
+  DCHECK(!g_delegate || !delegate);
+  g_delegate = delegate;
+}
+
+}  // namespace update_client
diff --git a/components/update_client/update_query_params.h b/components/update_client/update_query_params.h
new file mode 100644
index 0000000..48f7acf
--- /dev/null
+++ b/components/update_client/update_query_params.h
@@ -0,0 +1,60 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef COMPONENTS_UPDATE_CLIENT_UPDATE_QUERY_PARAMS_H_
+#define COMPONENTS_UPDATE_CLIENT_UPDATE_QUERY_PARAMS_H_
+
+#include <string>
+
+#include "base/basictypes.h"
+
+namespace update_client {
+
+class UpdateQueryParamsDelegate;
+
+// Generates a string of URL query parameters to be used when getting
+// component and extension updates. These parameters generally remain
+// fixed for a particular build. Embedders can use the delegate to
+// define different implementations. This should be used only in the
+// browser process.
+class UpdateQueryParams {
+ public:
+  enum ProdId {
+    CHROME = 0,
+    CRX,
+  };
+
+  // Generates a string of URL query parameters for Omaha. Includes the
+  // following fields: "os", "arch", "nacl_arch", "prod", "prodchannel",
+  // "prodversion", and "lang"
+  static std::string Get(ProdId prod);
+
+  // Returns the value we use for the "prod=" parameter. Possible return values
+  // include "chrome", "chromecrx", "chromiumcrx", and "unknown".
+  static const char* GetProdIdString(ProdId prod);
+
+  // Returns the value we use for the "os=" parameter. Possible return values
+  // include: "mac", "win", "android", "cros", "linux", and "openbsd".
+  static const char* GetOS();
+
+  // Returns the value we use for the "arch=" parameter. Possible return values
+  // include: "x86", "x64", and "arm".
+  static const char* GetArch();
+
+  // Returns the value we use for the "nacl_arch" parameter. Note that this may
+  // be different from the "arch" parameter above (e.g. one may be 32-bit and
+  // the other 64-bit). Possible return values include: "x86-32", "x86-64",
+  // "arm", and "mips32".
+  static const char* GetNaclArch();
+
+  // Use this delegate.
+  static void SetDelegate(UpdateQueryParamsDelegate* delegate);
+
+ private:
+  DISALLOW_IMPLICIT_CONSTRUCTORS(UpdateQueryParams);
+};
+
+}  // namespace update_client
+
+#endif  // COMPONENTS_UPDATE_CLIENT_UPDATE_QUERY_PARAMS_H_
diff --git a/components/update_client/update_query_params_delegate.cc b/components/update_client/update_query_params_delegate.cc
new file mode 100644
index 0000000..e14665a
--- /dev/null
+++ b/components/update_client/update_query_params_delegate.cc
@@ -0,0 +1,15 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "components/update_client/update_query_params_delegate.h"
+
+namespace update_client {
+
+UpdateQueryParamsDelegate::UpdateQueryParamsDelegate() {
+}
+
+UpdateQueryParamsDelegate::~UpdateQueryParamsDelegate() {
+}
+
+}  // namespace update_client
diff --git a/components/update_client/update_query_params_delegate.h b/components/update_client/update_query_params_delegate.h
new file mode 100644
index 0000000..0dd97ff
--- /dev/null
+++ b/components/update_client/update_query_params_delegate.h
@@ -0,0 +1,32 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef COMPONENTS_UPDATE_CLIENT_UPDATE_QUERY_PARAMS_DELEGATE_H_
+#define COMPONENTS_UPDATE_CLIENT_UPDATE_QUERY_PARAMS_DELEGATE_H_
+
+#include <string>
+
+#include "base/basictypes.h"
+
+namespace update_client {
+
+// Embedders can specify an UpdateQueryParamsDelegate to provide additional
+// custom parameters. If not specified (Set is never called), no additional
+// parameters are added.
+class UpdateQueryParamsDelegate {
+ public:
+  UpdateQueryParamsDelegate();
+  virtual ~UpdateQueryParamsDelegate();
+
+  // Returns additional parameters, if any. If there are any parameters, the
+  // string should begin with a & character.
+  virtual std::string GetExtraParams() = 0;
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(UpdateQueryParamsDelegate);
+};
+
+}  // namespace update_client
+
+#endif  // COMPONENTS_UPDATE_CLIENT_UPDATE_QUERY_PARAMS_DELEGATE_H_
diff --git a/components/update_client/update_query_params_unittest.cc b/components/update_client/update_query_params_unittest.cc
new file mode 100644
index 0000000..992dbd37
--- /dev/null
+++ b/components/update_client/update_query_params_unittest.cc
@@ -0,0 +1,55 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "base/strings/stringprintf.h"
+#include "components/update_client/update_query_params.h"
+#include "components/update_client/update_query_params_delegate.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+using base::StringPrintf;
+
+namespace update_client {
+
+namespace {
+
+bool Contains(const std::string& source, const std::string& target) {
+  return source.find(target) != std::string::npos;
+}
+
+class TestUpdateQueryParamsDelegate : public UpdateQueryParamsDelegate {
+  std::string GetExtraParams() override { return "&cat=dog"; }
+};
+
+}  // namespace
+
+void TestParams(UpdateQueryParams::ProdId prod_id, bool extra_params) {
+  std::string params = UpdateQueryParams::Get(prod_id);
+
+  // This doesn't so much test what the values are (since that would be an
+  // almost exact duplication of code with update_query_params.cc, and wouldn't
+  // really test anything) as it is a verification that all the params are
+  // present in the generated string.
+  EXPECT_TRUE(
+      Contains(params, StringPrintf("os=%s", UpdateQueryParams::GetOS())));
+  EXPECT_TRUE(
+      Contains(params, StringPrintf("arch=%s", UpdateQueryParams::GetArch())));
+  EXPECT_TRUE(Contains(
+      params,
+      StringPrintf("prod=%s", UpdateQueryParams::GetProdIdString(prod_id))));
+  if (extra_params)
+    EXPECT_TRUE(Contains(params, "cat=dog"));
+}
+
+TEST(UpdateQueryParamsTest, GetParams) {
+  TestParams(UpdateQueryParams::CRX, false);
+  TestParams(UpdateQueryParams::CHROME, false);
+
+  TestUpdateQueryParamsDelegate delegate;
+  UpdateQueryParams::SetDelegate(&delegate);
+
+  TestParams(UpdateQueryParams::CRX, true);
+  TestParams(UpdateQueryParams::CHROME, true);
+}
+
+}  // namespace update_client