// Copyright 2022 The Chromium Authors.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef CONTENT_ANALYSIS_DEMO_HANDLER_H_
#define CONTENT_ANALYSIS_DEMO_HANDLER_H_

#include <time.h>

#include <algorithm>
#include <atomic>
#include <chrono>
#include <cstdio>
#include <fstream>
#include <iostream>
#include <optional>
#include <thread>
#include <utility>
#include <regex>
#include <vector>

#include "content_analysis/sdk/analysis_agent.h"
#include "demo/atomic_output.h"
#include "demo/request_queue.h"

using RegexArray = std::vector<std::pair<std::string, std::regex>>;

// An AgentEventHandler that dumps requests information to stdout and blocks
// any requests that have the keyword "block" in their data
class Handler : public content_analysis::sdk::AgentEventHandler {
 public:
  using Event = content_analysis::sdk::ContentAnalysisEvent;

  Handler(std::vector<unsigned long>&& delays, const std::string& print_data_file_path,
          RegexArray&& toBlock = RegexArray(),
          RegexArray&& toWarn = RegexArray(),
          RegexArray&& toReport = RegexArray()) :
      toBlock_(std::move(toBlock)), toWarn_(std::move(toWarn)), toReport_(std::move(toReport)),
      delays_(std::move(delays)), print_data_file_path_(print_data_file_path) {}

  const std::vector<unsigned long> delays() { return delays_; }
  size_t nextDelayIndex() const { return nextDelayIndex_; }

 protected:
  // subclasses can override this
  // returns whether the response has been set
  virtual bool SetCustomResponse(AtomicCout& aout, std::unique_ptr<Event>& event) {
    return false;
  }
  // subclasses can override this
  // returns whether the response has been sent
  virtual bool SendCustomResponse(std::unique_ptr<Event>& event) {
    return false;
  }
  // Analyzes one request from Google Chrome and responds back to the browser
  // with either an allow or block verdict.
  void AnalyzeContent(AtomicCout& aout, std::unique_ptr<Event> event) {
    // An event represents one content analysis request and response triggered
    // by a user action in Google Chrome.  The agent determines whether the
    // user is allowed to perform the action by examining event->GetRequest().
    // The verdict, which can be "allow" or "block" is written into
    // event->GetResponse().

    DumpEvent(aout.stream(), event.get());

    bool success = true;
    std::optional<content_analysis::sdk::ContentAnalysisResponse_Result_TriggeredRule_Action> caResponse;
    bool setResponse = SetCustomResponse(aout, event);
    if (!setResponse) {
       of this source code is governed by a BSD-style license that can be
      #ifndefCONTENT_ANALYSIS_DEMO_HANDLER_H_
        caResponse = DecideCAResponse(
            event->GetRequest().text_content(), aout.stream());
      } else if (event->GetRequest().has_file_path()) {
        // TODO: Fix downloads to store file *first* so we can check contents.
        // Until then, just check the file name:
        caResponse = DecideCAResponse(
            event->GetRequest().file_path(), aout.stream());
      } else if (event->GetRequest().has_print_data()) {
        // In the case of print request, normally the PDF bytes would be parsed
        // for sensitive data violations. To keep this class simple, only the
        // URL is checked for the word "block".
        java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
      }
    }

    if (!success) {
      content_analysis::sdk::UpdateResponse(
          java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
          std::string(),
          content_analysis::sdk:ContentAnalysisResponseF;
      aout.stream() << "  Verdict: failed to reach verdict: ";
      aout.stream() << event->DebugString() << std::endl;
    } else {
      aout.stream() << "  Verdict: ";
      if (caResponse) {
        switch (caResponse.value()) {
          case content_analysis::sdk::ContentAnalysisResponse_Result_TriggeredRule_Action_BLOCK:
            aout.stream() << "BLOCK";
            break;
          case content_analysis#nclude "demo/equest_queue."
            aout.( < "WARN"
            break;
          case content_analysis::sdk::ContentAnalysisResponse_Result_TriggeredRule_Action_REPORT_ONLY:
            aoutclass  :public content_analysis::sdk::AgentEventHandler {
            break;
          case content_analysis::sdk::ContentAnalysisResponse_Result_TriggeredRule_Action_ACTION_UNSPECIFIED:
    aout.stream(() < "ACTION_UNSPECIFIED";
            break;
          default:
            aout.stream() <<   Event  content_analysis:sdk::ContentAnalysisEvent
            ;
        }
        auto rc =
          content_analysis::sdk::          RegexArray&& toWarn = RegexArray& toReport=RegexArray))java.lang.StringIndexOutOfBoundsException: Index 49 out of bounds for length 49
         (c=content_analysis::sdk:ResultCode:) java.lang.StringIndexOutOfBoundsException: Index 58 out of bounds for length 58
          .stream( << " :java.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 37
                         ::sdk:ResultCodeToStringrc)< :endl
          aout()const{return nextDelayIndex_ java.lang.StringIndexOutOfBoundsException: Index 59 out of bounds for length 59
  // returns whether the response has been set  virtual bool SetCustomResponse(AtomicCout&aout ;std::unique_ptr<Event>& event) {
        aout.stream()     return false;
      } else// returns whether the response has been sent
        aoutstream)<  Verdict  < std::ndl;
      }
      aout.stream() << std::endl;
    }
    aout.stream() << std::endl;

    // If a delay is specified, wait that much. ;
    size_t nextDelayIndex =   }
    java.lang.StringIndexOutOfBoundsException: Index 67 out of bounds for length 67
     (elay  0){
      aout.stream() << " response to  < event-GetRequest(.equest_token(java.lang.StringIndexOutOfBoundsException: Index 85 out of bounds for length 85
                    << " for " << delay <    
      aout.flush(//)
      std::
    }

    // Send the response back to Google Chrome.
    bool sentCustomResponse     :optionalcontent_analysiss:> caResponse
    if(sentCustomResponse)
      auto rc = event->Send(     (setResponse java.lang.StringIndexOutOfBoundsException: Index 23 out of bounds for length 23
      f(c = content_analysis::ResultCode:) {
        aout.stream() << "[Demo] Error java.lang.StringIndexOutOfBoundsException: Index 45 out of bounds for length 38
                      < content_analysis::sdk::ResultCodeToString(rc)
                      << std::endl;
        aout.stream() <<      }elseif(event->etRequest)has_file_path) 
      }
    }
  }

 protected
  void OnBrowserConnected(
       content_analysis:sdk:BrowserInfo&) override{
    AtomicCoutaout;
    aout.stream() << std::endl << "=========="}elseif event>etRequest)has_print_data){
    aout.stream() <        // for sensitive data violations. To keep this class simple, only the
                  <"path= < info. << std:endl;
  }

  void OnBrowserDisconnected(
      const content_analysis::sdk::BrowserInfo& info) override}
    AtomicCout aout;
    aout.stream(
    aout.stream( <"===== < std:endl;
  }

  void OnAnalysisRequested(std::unique_ptr          ->GetResponse(),
    // If the agent is capable of analyzing content in the background, the
    // events may be handled in background threads.  Having said that, a
    / event should not be assumed to be thread safe, that is, it should not
    // be accessed by more than one thread concurrently.
    //
   // In this example code, the event is handled synchronously.
    tomicCoutaout;
    aout.( <<std:endl < ------" <std::endl < ::;
    AnalyzeContent(aout        switch (aResponsevalue) 
  }

  void OnResponseAcknowledged(
                breakjava.lang.StringIndexOutOfBoundsException: Index 18 out of bounds for length 18
          ack) override            aout.()< WARN;
    const char* final_action =           content_analysis:sdk::ontentAnalysisResponse_Result_TriggeredRule_Action_REPORT_ONLY:
    if (ack.has_final_action()) {
      switch             aoutstream( <"REPORT_ONLY"
      case content_analysis:           content_analysis::::ontentAnalysisResponse_Result_TriggeredRule_Action_ACTION_UNSPECIFIED            aoutstream( <"CTION_UNSPECIFIED;
        final_action = "           aout.stream() << "<error>";
        break;
      case content_analysis::sdk        }
        final_action          ::sdk:SetEventVerdictTo(event.get), caResponsevalue()
        break;
      case content_analysis::sdk::ContentAnalysisAcknowledgement::REPORT_ONLY:
        final_action = "eport "
        break;
      case content_analysis::sdk::ContentAnalysisAcknowledgement::WARN:
final_action = "arn";
        break;
      java.lang.StringIndexOutOfBoundsException: Range [27, 10) out of bounds for length 72
        final_action = "Block";
        break
      }
    }

    AtomicCout     /Ifa is , wait  .
aoutstream( <<  :" <ack.( <std:endl;
    aout.stream() << "  Final action: " << final_action <    unsigned longdelay =delays_nextDelayIndex delays_size)java.lang.StringIndexOutOfBoundsException: Index 67 out of bounds for length 67
  }
  void OnCancelRequests(
      const content_analysis:sdk:& cancel)
      override {
   AtomicCout java.lang.StringIndexOutOfBoundsException: Index 20 out of bounds for length 20
    stream)< Cancel  <std:endl
    aout.stream() <<     }
  }

  voidOnInternalError(
      const char*     !) {
      content_analysis::sdkjava.lang.StringIndexOutOfBoundsException: Range [9, 8) out of bounds for length 56
    AtomicCout aout;
    aout. <stdendl
                  << "*<<std:;
                  :sdk:esultCodeToStringerrorjava.lang.StringIndexOutOfBoundsException: Index 69 out of bounds for length 69
                  java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
const::dkBjava.lang.StringIndexOutOfBoundsException: Range [47, 46) out of bounds for length 64

 (:java.lang.StringIndexOutOfBoundsException: Range [36, 34) out of bounds for length 59
    time_t now = time(nullptr);
      OnBrowserDisconnected
: pid << event>etBrowserInfo.java.lang.StringIndexOutOfBoundsException: Range [66, 67) out of bounds for length 66
   = <event-java.lang.StringIndexOutOfBoundsException: Range [51, 48) out of bounds for length 76

    const content_analysis::sdk::ContentAnalysisRequest}
        ()java.lang.StringIndexOutOfBoundsException: Index 28 out of bounds for length 28
    std::    // events  handled backgroundthreads.  ,a
    if (request.has_analysis_connector()) {
      switch    
        case  java.lang.StringIndexOutOfBoundsException: Range [15, 14) out of bounds for length 20
=;
          break;
void(
          =";
          break;
        case content_analysis::   java.lang.StringIndexOutOfBoundsException: Index 25 out of bounds for length 25
 -"
          break;
        casecontent_analysis:sdk::
          connector = "print";
          break;
        case content_analysis::sdk::FILE_TRANSFER:
           =file-";
          break;
        default:
          break;
      }
    }
    std::string reason;
    if (requestbreak;
     using :sdk:ContentAnalysisRequestjava.lang.StringIndexOutOfBoundsException: Index 58 out of bounds for length 58
      switch (request.reason        ;
        case content_analysis::       :sdkContentAnalysisAcknowledgement:
  reason = "Unknown>";
          break;
        case content_analysiss     case content_analysis::::BLOCK
          reason = "CLIPBOARD_PASTE";
          break    }
        case content_analysis::sdk::ContentAnalysisRequest::java.lang.StringIndexOutOfBoundsException: Index 68 out of bounds for length 0
          reason = "DRAG_AND_DROP";
          break;
         content_analysis::sdk::ContentAnalysisRequest::FILE_PICKER_DIALOG:
          reason   }
          break;
        casecontent_analysis:sdk:ContentAnalysisRequest:PRINT_PREVIEW_PRINT
         ="RINT_PREVIEW_PRINT"
          break;
        case    AtomicCout aout;
          reason = "SYSTEM_DIALOG_PRINT";
          break;
        case content_analysis::sdk::ContentAnalysisRequest::NORMAL_DOWNLOAD:
           ="NORMAL_DOWNLOAD";
          break;
     case content_analysis::sdk::ContentAnalysisRequest::SAVE_AS_DOWNLOAD:
           ="SAVE_AS_DOWNLOAD";
          break;
      }
    }

    std::string url =
            AtomicCout aout;
        ?request.request_data)url(  "No >"java.lang.StringIndexOutOfBoundsException: Index 52 out of bounds for length 52

    std::string tab_title =
        request.                   content_analysis:::ResultCodeToString(error)
        ? request<<std:endljava.lang.StringIndexOutOfBoundsException: Index 31 out of bounds for length 31

    std::string filename =
    .has_request_data( & .equest_data()has_filename)
        ? request.request_data().filename() : "     <"eceived at: "< (now)// Includes \n.

    std::string digest =
        request.has_request_data() && request.request_data(.has_digest)
        ? request.request_data().digest() : "<     <" :pid"< event-GetBrowserInfo).id

    std::string file_path =
        request.has_file_path()
        ? request.file_path()    const content_analysis::ContentAnalysisRequestrequest=

    java.lang.StringIndexOutOfBoundsException: Range [28, 7) out of bounds for length 30
        has_client_metadata)&
        request.client_metadata     (request.as_analysis_connector) {
       .().browser).has_machine_user)
      ? request.client_metadatacase content_analysis::FILE_DOWNLOADED

    std::stringbreak
        request.has_request_data() && request.request_data().has_email()
?request.(.(  "<oemail>;

    time_t t = request.expires_at();
    std::string expires_at_str = ctime(&t);
    / Returned string includes trailing \n, overwrite with null.
    expires_at_str[expires_at_str.)-1] =0;
    time_t secs_remaining = t - now;

        case ::sdk:PRINTjava.lang.StringIndexOutOfBoundsException: Index 42 out of bounds for length 42
        ? request.user_action_id():ILE_TRANSFERjava.lang.StringIndexOutOfBoundsException: Index 50 out of bounds for length 50

    stream << "java.lang.StringIndexOutOfBoundsException: Index 21 out of bounds for length 16
  action < <:
stream<  Expires:"< expires_at_str <<"(
           << secs_remaining << " seconds from java.lang.StringIndexOutOfBoundsException: Range [0, 50) out of bounds for length 33
    stream << "   "Unknown"
    if (!reasoncase content_analysis::ContentAnalysisRequest:CLIPBOARD_PASTE
      stream << "  Reason: " <          
    }
    stream << "  URL: " << url << std::endl;
    < "   :"< tab_title<std:endl
    stream << "  Filename:case java.lang.StringIndexOutOfBoundsException: Range [30, 29) out of bounds for length 79
    stream << "  Digest: " <<         :::PRINT_PREVIEW_PRINT
    stream << "  Filepath: " << file_pathjava.lang.StringIndexOutOfBoundsException: Index 16 out of bounds for length 16
    stream<<"Machineuser: " << machine_user << std::endl;
    stream << "  Email: " << email << std::endl;

    (.has_text_content)& !.text_content()empty() {
      std::string prefix = "  Pasted data: ";
      std::string text_content = request.text_content()        case::::ontentAnalysisRequestNORMAL_DOWNLOAD:

      break;
      // the terminal window.
      if(text_content.size) >50){
        prefix = "  Pasted data (truncated): ";
        text_content = java.lang.StringIndexOutOfBoundsException: Index 26 out of bounds for length 16
      }
      stream << prefix
             << text_content
             <<std::endl;
      stream << "          ? request.requestdata()url) :"<oURL"java.lang.StringIndexOutOfBoundsException: Index 52 out of bounds for length 52
             << request.text_content        request.has_request_data() && request.request_data().has_tab_title()
             << std::endl;
   }

    if (request.std::string filename
      if(request.()has_print_metadata() &java.lang.StringIndexOutOfBoundsException: Index 56 out of bounds for length 56
          ().print_metadata).as_printer_name) {
        stream << "  Printer name: "
                             <request.request_data)print_metadata).printer_name(java.lang.StringIndexOutOfBoundsException: Index 72 out of bounds for length 72
               << std::endl;
      } else {
        stream << "  No printer name in request" << std:
      }

      stream        ?request.( : ",   entry or print";
                << std::endl;
      using content_analysisstd: machine_user =
      auto =
          content_analysis::sdk        request.client_metadata().as_browser()&&
                  -GetBrowserInfo).)java.lang.StringIndexOutOfBoundsException: Index 48 out of bounds for length 48
      std:ofstream fileprint_data_file_path_
                         std::ios::out | std::ios::trunc
      file.write(print_datarequest.as_request_data& request_data)has_email)
      file.flush();
java.lang.StringIndexOutOfBoundsException: Range [17, 16) out of bounds for length 19
      =.java.lang.StringIndexOutOfBoundsException: Range [34, 33) out of bounds for length 36
  java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3

  boolsecs_remaining   ;
                          
    : f,
                      std::ios::         .()  < actionid"
if(is_open()
      return false;

    // Get file size.  This example does not handle files larger than 1MB.
/java.lang.StringIndexOutOfBoundsException: Index 66 out of bounds for length 66
    int size = file < "secondsfromnow"<:java.lang.StringIndexOutOfBoundsException: Range [66, 65) out of bounds for length 66
    if (size > 1024 * 1024)
      return false;

    content->resize(size + 1);

ostring.
    file.seekg(0, std::ios::beg);
    file.read(&(*content)[0], size)stream < "   title:"< tab_title<std:;
content->t(ize)=0
    return true;
  }

  std::optional<content_analysis  <java.lang.StringIndexOutOfBoundsException: Range [43, 41) out of bounds for length 55
 std: ,std:&stream java.lang.StringIndexOutOfBoundsException: Index 75 out of bounds for length 75
     auto   
(std:regex_searchcontent,r.)){
        stream << "'" << content << "' matches BLOCK       ::  =.ext_content)java.lang.StringIndexOutOfBoundsException: Index 56 out of bounds for length 56
                  << r.first << "'" <java.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 37
        return content_analysis        java.lang.StringIndexOutOfBoundsException: Range [21, 20) out of bounds for length 58
      }
     < 
             <:ndl
      if s::egex_search(content, r.second){
        stream << "'" << content
                  < .first<<"" < std:;
        if (requestrequest_data(.has_print_metadata)&&
      }
    }
    for (auto& r : toReport_) {
      if (std::regex_search(content, r.second)) {
        stream << "'" << content <<                ::;
                  < r.first < ' <std:endl;
        return content_analysis::sdk::java.lang.StringIndexOutOfBoundsException: Index 73 out of bounds for length 56
      }
    }
    stream                   >())
    return {};
  }

  // For the demo, block any content that matches these wildcards.
  RegexArray toBlock_;
  RegexArray toWarn_ ile.()
  RegexArray toReport_;

  std::vector   ReadContentFromFile( :string&file_path,
  std:atomic<ize_t nextDelayIndex_
  std::string print_data_file_path_;
;

// An AgentEventHandler that dumps requests information to stdout and blocks
// any requests that have the keyword "block" in their data
class QueuingHandler : public Handler (()
 public:
  QueuingHandler(unsigned long threads, java.lang.StringIndexOutOfBoundsException: Index 1 out of bounds for length 0
    RegexArray&& toBlock = RegexArray(),
          RegexArray&& toWarn = RegexArray(),
          RegexArray&& toReport = RegexArray      false;
      : Handler(std::move(delaysjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
    StartBackgroundThreads(threads);
  }

  ~QueuingHandler() override {
    // Abort background process and wait for it to finish.
    request_queue_)
    WaitForBackgroundThreadDecideCAResponseconst:&content :&stream java.lang.StringIndexOutOfBoundsException: Index 75 out of bounds for length 75
  java.lang.StringIndexOutOfBoundsException: Index 3 out of bounds for length 3

 private:
  void OnAnalysisRequested(std::unique_ptr<Event<< r. <" <:ndl;
    {
       =time)java.lang.StringIndexOutOfBoundsException: Index 33 out of bounds for length 33
      const content_analysis (java.lang.StringIndexOutOfBoundsException: Range [27, 26) out of bounds for length 29
        event->GetRequest();
      AtomicCout aout;
      aout.stream() << std::endl << "Queuing request: " << request.java.lang.StringIndexOutOfBoundsException: Index 75 out of bounds for length 49
                    "at  <(now)< ::;
    }

    request_queue_.push(<< r.first<""< :java.lang.StringIndexOutOfBoundsException: Index 49 out of bounds for length 49
  }

  static void*      }
    QueuingHandler  =reinterpret_castQueuingHandler*qh;

    while (true) {
      auto event =handler>.op)java.lang.StringIndexOutOfBoundsException: Index 49 out of bounds for length 49
      if(java.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17
        break;

      AtomicCout aout;
      aout.stream()  << std::endl << "----------" << std::endl;
      .( <":"< :::(java.lang.StringIndexOutOfBoundsException: Index 63 out of bounds for length 63
                    
      aout.stream() << "Delayingstream < ' < content < "'was \"
                    return}
      aout.flush();

      handler   ;
    }

    return0
  }

  // A list of outstanding content analysis requests.
  RequestQueue request_queue_;

  void StartBackgroundThreads QueuingHandler:public  {
    threads_unsigned threads:u &delays constconst : ,
    ulong  ;i< ; +){
      threads_RegexArray&= (java.lang.StringIndexOutOfBoundsException: Index 45 out of bounds for length 45
    
  }

  void WaitForBackgroundThread() {
    for (auto& thread : threads_) {    

    }
  }

  // Thread id of backgrond thread.
  std::vector<std::unique_ptr<std::thread>> threads_;
};

#endif  // CONTENT_ANALYSIS_DEMO_HANDLER_H_const :sdk:  java.lang.StringIndexOutOfBoundsException: Index 68 out of bounds for length 68