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      1 //
      2 // Copyright (C) 2013 The Android Open Source Project
      3 //
      4 // Licensed under the Apache License, Version 2.0 (the "License");
      5 // you may not use this file except in compliance with the License.
      6 // You may obtain a copy of the License at
      7 //
      8 //      http://www.apache.org/licenses/LICENSE-2.0
      9 //
     10 // Unless required by applicable law or agreed to in writing, software
     11 // distributed under the License is distributed on an "AS IS" BASIS,
     12 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13 // See the License for the specific language governing permissions and
     14 // limitations under the License.
     15 //
     16 
     17 #ifndef UPDATE_ENGINE_FAKE_P2P_MANAGER_CONFIGURATION_H_
     18 #define UPDATE_ENGINE_FAKE_P2P_MANAGER_CONFIGURATION_H_
     19 
     20 #include "update_engine/common/test_utils.h"
     21 #include "update_engine/common/utils.h"
     22 #include "update_engine/p2p_manager.h"
     23 
     24 #include <string>
     25 #include <vector>
     26 
     27 #include <base/files/file_util.h>
     28 #include <base/logging.h>
     29 #include <base/strings/string_number_conversions.h>
     30 #include <base/strings/string_util.h>
     31 
     32 namespace chromeos_update_engine {
     33 
     34 // Configuration for P2PManager for use in unit tests. Instead of
     35 // /var/cache/p2p, a temporary directory is used.
     36 class FakeP2PManagerConfiguration : public P2PManager::Configuration {
     37  public:
     38   FakeP2PManagerConfiguration() {
     39     EXPECT_TRUE(utils::MakeTempDirectory("p2p-tc.XXXXXX", &p2p_dir_));
     40   }
     41 
     42   ~FakeP2PManagerConfiguration() {
     43     if (p2p_dir_.size() > 0 &&
     44         !base::DeleteFile(base::FilePath(p2p_dir_), true)) {
     45       PLOG(ERROR) << "Unable to unlink files and directory in " << p2p_dir_;
     46     }
     47   }
     48 
     49   // P2PManager::Configuration override
     50   base::FilePath GetP2PDir() override {
     51     return base::FilePath(p2p_dir_);
     52   }
     53 
     54   // P2PManager::Configuration override
     55   std::vector<std::string> GetInitctlArgs(bool is_start) override {
     56     return is_start ? initctl_start_args_ : initctl_stop_args_;
     57   }
     58 
     59   // P2PManager::Configuration override
     60   std::vector<std::string> GetP2PClientArgs(const std::string &file_id,
     61                                             size_t minimum_size) override {
     62     std::vector<std::string> formatted_command = p2p_client_cmd_format_;
     63     // Replace {variable} on the passed string.
     64     std::string str_minimum_size = std::to_string(minimum_size);
     65     for (std::string& arg : formatted_command) {
     66       base::ReplaceSubstringsAfterOffset(&arg, 0, "{file_id}", file_id);
     67       base::ReplaceSubstringsAfterOffset(&arg, 0, "{minsize}",
     68                                          str_minimum_size);
     69     }
     70     return formatted_command;
     71   }
     72 
     73   // Use |command_line| instead of "initctl start p2p" when attempting
     74   // to start the p2p service.
     75   void SetInitctlStartCommand(const std::vector<std::string>& command) {
     76     initctl_start_args_ = command;
     77   }
     78 
     79   // Use |command_line| instead of "initctl stop p2p" when attempting
     80   // to stop the p2p service.
     81   void SetInitctlStopCommand(const std::vector<std::string>& command) {
     82     initctl_stop_args_ = command;
     83   }
     84 
     85   // Use |command_format| instead of "p2p-client --get-url={file_id}
     86   // --minimum-size={minsize}" when attempting to look up a file using
     87   // p2p-client(1).
     88   //
     89   // The passed |command_format| argument can have "{file_id}" and "{minsize}"
     90   // as substrings of any of its elements, that will be replaced by the
     91   // corresponding values passed to GetP2PClientArgs().
     92   void SetP2PClientCommand(const std::vector<std::string>& command_format) {
     93     p2p_client_cmd_format_ = command_format;
     94   }
     95 
     96  private:
     97   // The temporary directory used for p2p.
     98   std::string p2p_dir_;
     99 
    100   // Argument vector for starting p2p.
    101   std::vector<std::string> initctl_start_args_{"initctl", "start", "p2p"};
    102 
    103   // Argument vector for stopping p2p.
    104   std::vector<std::string> initctl_stop_args_{"initctl", "stop", "p2p"};
    105 
    106   // A string for generating the p2p-client command. See the
    107   // SetP2PClientCommandLine() for details.
    108   std::vector<std::string> p2p_client_cmd_format_{
    109       "p2p-client", "--get-url={file_id}", "--minimum-size={minsize}"};
    110 
    111   DISALLOW_COPY_AND_ASSIGN(FakeP2PManagerConfiguration);
    112 };
    113 
    114 }  // namespace chromeos_update_engine
    115 
    116 #endif  // UPDATE_ENGINE_FAKE_P2P_MANAGER_CONFIGURATION_H_
    117