Validates service state file and ask user to update information if necessarily.

Connects to Google servers to get authentication tokens.

BUG=125026
TEST=service_state_unittest.cc

Review URL: https://chromiumcodereview.appspot.com/10414020

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@138294 0039d316-1c4b-4281-b951-d872f2087c98

cloud_print/service/win/cloud_print_service.cc

@@ -10,9 +10,12 @@
 #include "base/at_exit.h"
 #include "base/command_line.h"
 #include "base/file_path.h"
+#include "base/file_util.h"
 #include "base/path_service.h"
+#include "base/string_util.h"
 #include "base/win/scoped_handle.h"
 #include "cloud_print/service/win/resource.h"
+#include "cloud_print/service/win/service_state.h"
 
 namespace {
 
@@ -26,6 +29,8 @@ const char kServiceSwitch[] = "service";
 const char kUserDataDirSwitch[] = "user-data-dir";
 const char kQuietSwitch[] = "quiet";
 
+const wchar_t kServiceStateFileName[] = L"Service State";
+
 // The traits class for Windows Service.
 class ServiceHandleTraits {
  public:
@@ -98,6 +103,34 @@ void InvalidUsage() {
   std::cout << "\n";
 }
 
+std::string GetOption(const std::string& name, const std::string& default,
+                      bool secure) {
+  std::cout << "Input \'" << name << "\'";
+  if (!default.empty()) {
+    std::cout << ", press [ENTER] to keep '";
+    std::cout << default;
+    std::cout << "'";
+  }
+  std::cout << ":";
+  std::string tmp;
+
+  if (secure) {
+    DWORD saved_mode = 0;
+    // Don't close.
+    HANDLE stdin_handle = ::GetStdHandle(STD_INPUT_HANDLE);
+    ::GetConsoleMode(stdin_handle, &saved_mode);
+    ::SetConsoleMode(stdin_handle, saved_mode & ~ENABLE_ECHO_INPUT);
+    std::getline(std::cin, tmp);
+    ::SetConsoleMode(stdin_handle, saved_mode);
+    std::cout << "\n";
+  } else {
+    std::getline(std::cin, tmp);
+  }
+  if (tmp.empty())
+    return default;
+  return tmp;
+}
+
 }  // namespace
 
 class CloudPrintServiceModule
@@ -118,7 +151,7 @@ class CloudPrintServiceModule
   HRESULT Install(const FilePath& user_data_dir) {
     // TODO(vitalybuka): consider "lite" version if we don't want unregister
     // printers here.
-    if (!Uninstall())
+    if (!Uninstall())
       return E_FAIL;
 
     FilePath service_path;
@@ -196,7 +229,11 @@ class CloudPrintServiceModule
       }
 
       FilePath data_dir = command_line.GetSwitchValuePath(kUserDataDirSwitch);
-      HRESULT hr = Install(data_dir);
+      HRESULT hr = ProcessServiceState(data_dir,
+                                       command_line.HasSwitch(kQuietSwitch));
+      if (FAILED(hr))
+        return hr;
+      hr = Install(data_dir);
       if (SUCCEEDED(hr) && command_line.HasSwitch(kStartSwitch))
         return StartService();
 
@@ -216,6 +253,61 @@ class CloudPrintServiceModule
     return S_FALSE;
   }
 
+  HRESULT ProcessServiceState(const FilePath& user_data_dir, bool quiet) {
+    FilePath file = user_data_dir.Append(kServiceStateFileName);
+
+    for (;;) {
+      std::string contents;
+      ServiceState service_state;
+
+      bool is_valid = file_util::ReadFileToString(file, &contents) &&
+                      service_state.FromString(contents);
+
+      if (!quiet) {
+        std::cout << file.value() << ":\n";
+        std::cout << contents << "\n";
+      }
+
+      if (!is_valid)
+        LOG(ERROR) << "Invalid file: " << file.value();
+
+      if (quiet)
+        return is_valid ? S_OK : HRESULT_FROM_WIN32(ERROR_FILE_INVALID);
+
+      std::cout << "Do you want to use this file [y/n]:";
+      for (;;) {
+        std::string input;
+        std::getline(std::cin, input);
+        StringToLowerASCII(&input);
+        if (input == "y") {
+          return S_OK;
+        } else if (input == "n") {
+          is_valid = false;
+          break;
+        }
+      }
+
+      while (!is_valid) {
+        std::string email = GetOption("email", service_state.email(), false);
+        std::string password = GetOption("password", "", true);
+        std::string proxy_id = GetOption("connector_id",
+                                         service_state.proxy_id(), false);
+        is_valid = service_state.Configure(email, password, proxy_id);
+        if (is_valid) {
+          std::string new_contents = service_state.ToString();
+          if (new_contents != contents) {
+            if (file_util::WriteFile(file, new_contents.c_str(),
+                                     new_contents.size()) <= 0) {
+              return HResultFromLastError();
+            }
+          }
+        }
+      }
+    }
+
+    return S_OK;
+  }
+
   HRESULT OpenServiceManager(ServiceHandle* service_manager) {
     if (!service_manager)
       return E_POINTER;

cloud_print/service/win/service.gyp

@@ -11,6 +11,19 @@
     ],
   },
   'targets': [
+    {
+      'target_name': 'cloud_print_service_lib',
+      'type': 'static_library',
+      'dependencies': [
+        '../../../base/base.gyp:base', 
+        '../../../net/net.gyp:net',
+        '../../../build/temp_gyp/googleurl.gyp:googleurl',
+      ],
+      'sources': [
+        'service_state.cc',
+        'service_state.h',
+      ]
+    },
     {
       'target_name': 'cloud_print_service',
       'type': 'executable',
@@ -21,7 +34,7 @@
         'resource.h',
       ],
       'dependencies': [
-        '../../../base/base.gyp:base', 
+        'cloud_print_service_lib'
       ],
       'msvs_settings': {
         'VCLinkerTool': {
@@ -30,5 +43,20 @@
         },
       },
     },
+    {
+      'target_name': 'cloud_print_service_unittests',
+      'type': 'executable',
+      'sources': [
+        'service_state_unittest.cc',
+      ],
+      'dependencies': [
+        '../../../base/base.gyp:run_all_unittests',
+        '../../../base/base.gyp:base',
+        '../../../base/base.gyp:test_support_base',
+        '../../../testing/gmock.gyp:gmock',
+        '../../../testing/gtest.gyp:gtest',
+        'cloud_print_service_lib',
+      ],
+    },
   ],
 }

cloud_print/service/win/service_state.cc

+// Copyright (c) 2012 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 "cloud_print/service/win/service_state.h"
+
+#include "base/json/json_reader.h"
+#include "base/json/json_writer.h"
+#include "base/logging.h"
+#include "base/message_loop.h"
+#include "base/string_util.h"
+#include "base/utf_string_conversions.h"
+#include "net/base/escape.h"
+#include "net/base/io_buffer.h"
+#include "net/url_request/url_request.h"
+#include "net/url_request/url_request_context.h"
+#include "net/url_request/url_request_context_builder.h"
+
+namespace {
+
+const char kCloudPrintJsonName[] = "cloud_print";
+const char kEnabledOptionName[] = "enabled";
+
+const char kEmailOptionName[] = "email";
+const char kPasswordOptionName[] = "password";
+const char kProxyIdOptionName[] = "proxy_id";
+const char kRobotEmailOptionName[] = "robot_email";
+const char kRobotTokenOptionName[] = "robot_refresh_token";
+const char kAuthTokenOptionName[] = "auth_token";
+const char kXmppAuthTokenOptionName[] = "xmpp_auth_token";
+
+const char kClientLoginUrl[] = "https://www.google.com/accounts/ClientLogin";
+
+const int64 kRequestTimeoutMs = 10 * 1000;
+
+class ServiceStateURLRequestDelegate : public net::URLRequest::Delegate {
+ public:
+  virtual void OnResponseStarted(net::URLRequest* request) {
+    if (request->GetResponseCode() == 200) {
+      Read(request);
+      if (request->status().is_io_pending())
+        return;
+    }
+    request->Cancel();
+  };
+
+  virtual void OnReadCompleted(net::URLRequest* request, int bytes_read) {
+    Read(request);
+    if (!request->status().is_io_pending())
+      MessageLoop::current()->Quit();
+  };
+
+  const std::string& data() const {
+    return data_;
+  }
+
+ private:
+  void Read(net::URLRequest* request) {
+    // Read as many bytes as are available synchronously.
+    const int kBufSize = 100000;
+    scoped_refptr<net::IOBuffer> buf(new net::IOBuffer(kBufSize));
+    int num_bytes = 0;
+    while (request->Read(buf, kBufSize, &num_bytes)) {
+      data_.append(buf->data(), buf->data() + num_bytes);
+    }
+  }
+  std::string data_;
+};
+
+
+void SetNotEmptyJsonString(base::DictionaryValue* dictionary,
+                           const std::string& name,
+                           const std::string& value) {
+  if (!value.empty())
+    dictionary->SetString(name, value);
+}
+
+}  // namespace
+
+ServiceState::ServiceState() {
+  Reset();
+}
+
+ServiceState::~ServiceState() {
+}
+
+void ServiceState::Reset() {
+  email_.clear();
+  proxy_id_.clear();
+  robot_email_.clear();
+  robot_token_.clear();
+  auth_token_.clear();
+  xmpp_auth_token_.clear();
+}
+
+bool ServiceState::FromString(const std::string& json) {
+  Reset();
+  scoped_ptr<base::Value> data(base::JSONReader::Read(json));
+  if (!data.get())
+    return false;
+
+  const base::DictionaryValue* services = NULL;
+  if (!data->GetAsDictionary(&services))
+    return false;
+
+  base::DictionaryValue* cloud_print = NULL;
+  if (!services->GetDictionary(kCloudPrintJsonName, &cloud_print))
+    return false;
+
+  bool valid_file = true;
+  // Don't exit on fail. Collect all data for re-use by user later.
+  if (!cloud_print->GetBoolean(kEnabledOptionName, &valid_file))
+    valid_file = false;
+
+  cloud_print->GetString(kEmailOptionName, &email_);
+  cloud_print->GetString(kProxyIdOptionName, &proxy_id_);
+  cloud_print->GetString(kRobotEmailOptionName, &robot_email_);
+  cloud_print->GetString(kRobotTokenOptionName, &robot_token_);
+  cloud_print->GetString(kAuthTokenOptionName, &auth_token_);
+  cloud_print->GetString(kXmppAuthTokenOptionName, &xmpp_auth_token_);
+
+  return valid_file && IsValid();
+}
+
+bool ServiceState::IsValid() const {
+  if (email_.empty() || proxy_id_.empty())
+    return false;
+  bool valid_robot = !robot_email_.empty() && !robot_token_.empty();
+  bool valid_auth = !auth_token_.empty() && !xmpp_auth_token_.empty();
+  return valid_robot || valid_auth;
+}
+
+std::string ServiceState::ToString() {
+  scoped_ptr<base::DictionaryValue> services(new DictionaryValue());
+
+  scoped_ptr<base::DictionaryValue> cloud_print(new DictionaryValue());
+  cloud_print->SetBoolean(kEnabledOptionName, true);
+
+  SetNotEmptyJsonString(cloud_print.get(), kEmailOptionName, email_);
+  SetNotEmptyJsonString(cloud_print.get(), kProxyIdOptionName, proxy_id_);
+  SetNotEmptyJsonString(cloud_print.get(), kRobotEmailOptionName, robot_email_);
+  SetNotEmptyJsonString(cloud_print.get(), kRobotTokenOptionName, robot_token_);
+  SetNotEmptyJsonString(cloud_print.get(), kAuthTokenOptionName, auth_token_);
+  SetNotEmptyJsonString(cloud_print.get(), kXmppAuthTokenOptionName,
+                        xmpp_auth_token_);
+
+  services->Set(kCloudPrintJsonName, cloud_print.release());
+
+  std::string json;
+  base::JSONWriter::WriteWithOptions(services.get(),
+                                     base::JSONWriter::OPTIONS_PRETTY_PRINT,
+                                     &json);
+  return json;
+}
+
+std::string ServiceState::LoginToGoogle(const std::string& service,
+                                        const std::string& email,
+                                        const std::string& password) {
+  MessageLoop loop(MessageLoop::TYPE_IO);
+
+  net::URLRequestContextBuilder builder;
+  scoped_ptr<net::URLRequestContext> context(builder.Build());
+
+  ServiceStateURLRequestDelegate fetcher_delegate;
+  GURL url(kClientLoginUrl);
+
+  std::string post_body;
+  post_body += "accountType=GOOGLE";
+  post_body += "&Email=" + net::EscapeUrlEncodedData(email, true);
+  post_body += "&Passwd=" + net::EscapeUrlEncodedData(password, true);
+  post_body += "&source=" + net::EscapeUrlEncodedData("CP-Service", true);
+  post_body += "&service=" + net::EscapeUrlEncodedData(service, true);
+
+  net::URLRequest request(url, &fetcher_delegate);
+
+  request.AppendBytesToUpload(post_body.c_str(), post_body.size());
+  request.SetExtraRequestHeaderByName(
+      "Content-Type", "application/x-www-form-urlencoded", true);
+  request.set_context(context.get());
+  request.set_method("POST");
+  request.Start();
+
+  MessageLoop::current()->PostDelayedTask(
+      FROM_HERE, MessageLoop::QuitClosure(), kRequestTimeoutMs);
+
+  MessageLoop::current()->Run();
+
+  const char kAuthStart[] = "Auth=";
+  std::vector<std::string> lines;
+  Tokenize(fetcher_delegate.data(), "\r\n", &lines);
+  for (size_t i = 0; i < lines.size(); ++i) {
+    std::vector<std::string> tokens;
+    if (StartsWithASCII(lines[i], kAuthStart, false))
+      return lines[i].substr(arraysize(kAuthStart) - 1);
+  }
+
+  return std::string();
+}
+
+bool ServiceState::Configure(const std::string& email,
+                             const std::string& password,
+                             const std::string& proxy_id) {
+  robot_token_.clear();
+  robot_email_.clear();
+  email_ = email;
+  proxy_id_ = proxy_id;
+  auth_token_ = LoginToGoogle("cloudprint", email_, password);
+  xmpp_auth_token_ = LoginToGoogle("chromiumsync", email_, password);
+  return IsValid();
+}
+

cloud_print/service/win/service_state.h

+// Copyright (c) 2012 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 CLOUD_PRINT_SERVICE_SERVICE_STATE_H_
+#define CLOUD_PRINT_SERVICE_SERVICE_STATE_H_
+
+#include <string>
+
+#include "base/file_path.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/values.h"
+
+class FilePath;
+
+// Manages Cloud Print part of Service State.
+class ServiceState {
+ public:
+  ServiceState();
+  virtual ~ServiceState();
+
+  void Reset();
+
+  // Initialize object from json.
+  bool FromString(const std::string& json);
+
+  // Returns object state as json.
+  std::string ToString();
+
+  // Setups object using data provided by delegate.
+  bool Configure(const std::string& email,
+                 const std::string& password,
+                 const std::string& proxy_id);
+
+  // Returns authentication token provided by Google server.
+  virtual std::string LoginToGoogle(const std::string& service,
+                                    const std::string& email,
+                                    const std::string& password);
+
+  // Returns true of object state is valid.
+  bool IsValid() const;
+
+  std::string email() const {
+    return email_;
+  };
+
+  std::string proxy_id() const {
+    return proxy_id_;
+  };
+
+  std::string robot_email() const {
+    return robot_email_;
+  };
+
+  std::string robot_token() const {
+    return robot_token_;
+  };
+
+  std::string auth_token() const {
+    return auth_token_;
+  };
+
+  std::string xmpp_auth_token() const {
+    return xmpp_auth_token_;
+  };
+
+  void set_email(const std::string& value) {
+    email_ = value;
+  };
+
+  void set_proxy_id(const std::string& value) {
+    proxy_id_ = value;
+  };
+
+  void set_robot_email(const std::string& value) {
+    robot_email_ = value;
+  };
+
+  void set_robot_token(const std::string& value) {
+    robot_token_ = value;
+  };
+
+  void set_auth_token(const std::string& value) {
+    auth_token_ = value;
+  };
+
+  void set_xmpp_auth_token(const std::string& value) {
+    xmpp_auth_token_ = value;
+  };
+
+ private:
+  std::string email_;
+  std::string proxy_id_;
+  std::string robot_email_;
+  std::string robot_token_;
+  std::string auth_token_;
+  std::string xmpp_auth_token_;
+
+  DISALLOW_COPY_AND_ASSIGN(ServiceState);
+};
+
+#endif  // CLOUD_PRINT_SERVICE_SERVICE_STATE_H_
+

cloud_print/service/win/service_state_unittest.cc

+// Copyright (c) 2012 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 "cloud_print/service/win/service_state.h"
+
+#include "base/string_util.h"
+#include "testing/gmock/include/gmock/gmock.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+using ::testing::_;
+using ::testing::Exactly;
+using ::testing::Return;
+
+TEST(ServiceStateTest, Empty) {
+  ServiceState state;
+  EXPECT_FALSE(state.IsValid());
+}
+
+TEST(ServiceStateTest, ToString) {
+  ServiceState state;
+  EXPECT_STREQ("{\"cloud_print\": {\"enabled\": true}}",
+               CollapseWhitespaceASCII(state.ToString(), true).c_str());
+  state.set_email("test@gmail.com");
+  state.set_proxy_id("proxy");
+  state.set_robot_email("robot@gmail.com");
+  state.set_robot_token("abc");
+  state.set_auth_token("token1");
+  state.set_xmpp_auth_token("token2");
+  EXPECT_TRUE(state.IsValid());
+  EXPECT_STREQ("{\"cloud_print\": {\"auth_token\": \"token1\",\"email\": "
+               "\"test@gmail.com\",\"enabled\": true,\"proxy_id\": \"proxy\","
+               "\"robot_email\": \"robot@gmail.com\",\"robot_refresh_token\": "
+               "\"abc\",\"xmpp_auth_token\": \"token2\"}}",
+               CollapseWhitespaceASCII(state.ToString(), true).c_str());
+}
+
+TEST(ServiceStateTest, FromString) {
+  ServiceState state;
+  // Syntax error.
+  EXPECT_FALSE(state.FromString("<\"cloud_print\": {\"enabled\": true}}"));
+  // No data.
+  EXPECT_FALSE(state.FromString("{\"cloud_print\": {\"enabled\": true}}"));
+  EXPECT_FALSE(state.FromString(
+      "{\"cloud_print\": {\"email\": \"test@gmail.com\"}}"));
+  EXPECT_STREQ("test@gmail.com", state.email().c_str());
+
+  // Good state.
+  EXPECT_TRUE(state.FromString(
+      "{\"cloud_print\": {\"email\": \"test2@gmail.com\",\"enabled\": true,\""
+      "proxy_id\": \"proxy\",\"robot_email\": \"robot@gmail.com\",\""
+      "robot_refresh_token\": \"abc\"}}"));
+  EXPECT_STREQ("test2@gmail.com", state.email().c_str());
+  EXPECT_STREQ("proxy", state.proxy_id().c_str());
+  EXPECT_STREQ("robot@gmail.com", state.robot_email().c_str());
+  EXPECT_STREQ("abc", state.robot_token().c_str());
+}
+
+class ServiceStateMock : public ServiceState {
+ public:
+  ServiceStateMock() {}
+
+  MOCK_METHOD3(LoginToGoogle,
+               std::string(const std::string& service,
+                           const std::string& email,
+                           const std::string& password));
+
+ private:
+  DISALLOW_COPY_AND_ASSIGN(ServiceStateMock);
+};
+
+TEST(ServiceStateTest, Configure) {
+  ServiceStateMock state;
+  state.set_email("test1@gmail.com");
+  state.set_proxy_id("id1");
+
+  EXPECT_CALL(state, LoginToGoogle("cloudprint", "test2@gmail.com", "abc"))
+    .Times(Exactly(1))
+    .WillOnce(Return("auth1"));
+  EXPECT_CALL(state, LoginToGoogle("chromiumsync", "test2@gmail.com", "abc"))
+    .Times(Exactly(1))
+    .WillOnce(Return("auth2"));
+
+  EXPECT_TRUE(state.Configure("test2@gmail.com", "abc", "id2"));
+
+  EXPECT_STREQ("id2", state.proxy_id().c_str());
+  EXPECT_STREQ("auth1", state.auth_token().c_str());
+  EXPECT_STREQ("auth2", state.xmpp_auth_token().c_str());
+}