| // Copyright 2017 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/upload_list/text_log_upload_list.h" |
| |
| #include <algorithm> |
| #include <sstream> |
| |
| #include "base/files/file_util.h" |
| #include "base/json/json_reader.h" |
| #include "base/optional.h" |
| #include "base/strings/string_number_conversions.h" |
| #include "base/strings/string_split.h" |
| #include "base/strings/string_util.h" |
| |
| namespace { |
| |
| constexpr size_t kUploadTimeIndex = 0; |
| constexpr size_t kCaptureTimeIndex = 3; |
| |
| constexpr char kJsonLogKeyUploadId[] = "upload_id"; |
| constexpr char kJsonLogKeyUploadTime[] = "upload_time"; |
| constexpr char kJsonLogKeyLocalId[] = "local_id"; |
| constexpr char kJsonLogKeyCaptureTime[] = "capture_time"; |
| constexpr char kJsonLogKeyState[] = "state"; |
| constexpr char kJsonLogKeySource[] = "source"; |
| |
| std::vector<std::string> SplitIntoLines(const std::string& file_contents) { |
| return base::SplitString(file_contents, base::kWhitespaceASCII, |
| base::KEEP_WHITESPACE, base::SPLIT_WANT_NONEMPTY); |
| } |
| |
| std::vector<std::string> SplitIntoComponents(const std::string& line) { |
| return base::SplitString(line, ",", base::TRIM_WHITESPACE, |
| base::SPLIT_WANT_ALL); |
| } |
| |
| bool CheckCsvUploadListOutOfRange(const std::string& line, |
| const base::Time& begin, |
| const base::Time& end) { |
| std::vector<std::string> components = SplitIntoComponents(line); |
| double seconds_since_epoch; |
| if (components.size() > kUploadTimeIndex && |
| !components[kUploadTimeIndex].empty() && |
| base::StringToDouble(components[kUploadTimeIndex], |
| &seconds_since_epoch)) { |
| base::Time upload_time = base::Time::FromDoubleT(seconds_since_epoch); |
| if (begin <= upload_time && upload_time <= end) |
| return false; |
| } |
| |
| if (components.size() > kCaptureTimeIndex && |
| !components[kCaptureTimeIndex].empty() && |
| base::StringToDouble(components[kCaptureTimeIndex], |
| &seconds_since_epoch)) { |
| base::Time capture_time = base::Time::FromDoubleT(seconds_since_epoch); |
| if (begin <= capture_time && capture_time <= end) |
| return false; |
| } |
| |
| return true; |
| } |
| |
| bool CheckFieldOutOfRange(const std::string* time_string, |
| const base::Time& begin, |
| const base::Time& end) { |
| if (time_string) { |
| double upload_time_double = 0.0; |
| if (base::StringToDouble(*time_string, &upload_time_double)) { |
| base::Time upload_time = base::Time::FromDoubleT(upload_time_double); |
| if (begin <= upload_time && upload_time <= end) |
| return false; |
| } |
| } |
| return true; |
| } |
| |
| bool CheckJsonUploadListOutOfRange(const base::Value& dict, |
| const base::Time& begin, |
| const base::Time& end) { |
| const std::string* upload_time_string = |
| dict.FindStringKey(kJsonLogKeyUploadTime); |
| |
| const std::string* capture_time_string = |
| dict.FindStringKey(kJsonLogKeyCaptureTime); |
| |
| return CheckFieldOutOfRange(upload_time_string, begin, end) && |
| CheckFieldOutOfRange(capture_time_string, begin, end); |
| } |
| |
| // Tries to parse one upload log line based on CSV format, then converts it to |
| // a UploadInfo entry. If the conversion succeeds, it returns a valid UploadInfo |
| // instance. Otherwise, it returns nullptr. |
| std::unique_ptr<TextLogUploadList::UploadInfo> TryParseCsvLogEntry( |
| const std::string& log_line) { |
| std::vector<std::string> components = SplitIntoComponents(log_line); |
| // Skip any blank (or corrupted) lines. |
| if (components.size() < 2 || components.size() > 5) |
| return nullptr; |
| base::Time upload_time; |
| double seconds_since_epoch; |
| if (!components[kUploadTimeIndex].empty()) { |
| if (!base::StringToDouble(components[kUploadTimeIndex], |
| &seconds_since_epoch)) |
| return nullptr; |
| upload_time = base::Time::FromDoubleT(seconds_since_epoch); |
| } |
| auto info = std::make_unique<TextLogUploadList::UploadInfo>(components[1], |
| upload_time); |
| |
| // Add local ID if present. |
| if (components.size() > 2) |
| info->local_id = components[2]; |
| |
| // Add capture time if present. |
| if (components.size() > kCaptureTimeIndex && |
| !components[kCaptureTimeIndex].empty() && |
| base::StringToDouble(components[kCaptureTimeIndex], |
| &seconds_since_epoch)) { |
| info->capture_time = base::Time::FromDoubleT(seconds_since_epoch); |
| } |
| |
| int state; |
| if (components.size() > 4 && !components[4].empty() && |
| base::StringToInt(components[4], &state)) { |
| info->state = static_cast<TextLogUploadList::UploadInfo::State>(state); |
| } |
| |
| return info; |
| } |
| |
| // Tries to parse one upload log dictionary based on line-based JSON format (no |
| // internal additional newline is permitted), then converts it to a UploadInfo |
| // entry. If the conversion succeeds, it returns a valid UploadInfo instance. |
| // Otherwise, it returns nullptr. |
| std::unique_ptr<TextLogUploadList::UploadInfo> TryParseJsonLogEntry( |
| const base::Value& dict) { |
| // Parse upload_id. |
| const base::Value* upload_id_value = dict.FindKey(kJsonLogKeyUploadId); |
| std::string upload_id; |
| if (upload_id_value && !upload_id_value->GetAsString(&upload_id)) |
| return nullptr; |
| |
| // Parse upload_time. |
| const std::string* upload_time_string = |
| dict.FindStringKey(kJsonLogKeyUploadTime); |
| double upload_time_double = 0.0; |
| if (upload_time_string && |
| !base::StringToDouble(*upload_time_string, &upload_time_double)) |
| return nullptr; |
| |
| auto info = std::make_unique<TextLogUploadList::UploadInfo>( |
| upload_id, base::Time::FromDoubleT(upload_time_double)); |
| |
| // Parse local_id. |
| const std::string* local_id = dict.FindStringKey(kJsonLogKeyLocalId); |
| if (local_id) |
| info->local_id = *local_id; |
| |
| // Parse capture_time. |
| const std::string* capture_time_string = |
| dict.FindStringKey(kJsonLogKeyCaptureTime); |
| double capture_time_double = 0.0; |
| if (capture_time_string && |
| base::StringToDouble(*capture_time_string, &capture_time_double)) |
| info->capture_time = base::Time::FromDoubleT(capture_time_double); |
| |
| // Parse state. |
| base::Optional<int> state = dict.FindIntKey(kJsonLogKeyState); |
| if (state.has_value()) |
| info->state = |
| static_cast<TextLogUploadList::UploadInfo::State>(state.value()); |
| |
| // Parse source. |
| const std::string* source = dict.FindStringKey(kJsonLogKeySource); |
| if (source) |
| info->source = *source; |
| |
| return info; |
| } |
| |
| } // namespace |
| |
| TextLogUploadList::TextLogUploadList(const base::FilePath& upload_log_path) |
| : upload_log_path_(upload_log_path) {} |
| |
| TextLogUploadList::~TextLogUploadList() = default; |
| |
| std::vector<UploadList::UploadInfo> TextLogUploadList::LoadUploadList() { |
| std::vector<UploadInfo> uploads; |
| |
| if (base::PathExists(upload_log_path_)) { |
| std::string contents; |
| base::ReadFileToString(upload_log_path_, &contents); |
| ParseLogEntries(SplitIntoLines(contents), &uploads); |
| } |
| |
| return uploads; |
| } |
| |
| void TextLogUploadList::ClearUploadList(const base::Time& begin, |
| const base::Time& end) { |
| if (!base::PathExists(upload_log_path_)) |
| return; |
| |
| std::string contents; |
| base::ReadFileToString(upload_log_path_, &contents); |
| std::vector<std::string> log_entries = SplitIntoLines(contents); |
| |
| std::ostringstream new_contents_stream; |
| for (const std::string& line : log_entries) { |
| base::Optional<base::Value> json = base::JSONReader::Read(line); |
| bool should_copy = false; |
| |
| if (json.has_value()) |
| should_copy = CheckJsonUploadListOutOfRange(json.value(), begin, end); |
| else |
| should_copy = CheckCsvUploadListOutOfRange(line, begin, end); |
| |
| if (should_copy) |
| new_contents_stream << line << std::endl; |
| } |
| |
| std::string new_contents = new_contents_stream.str(); |
| if (new_contents.size() == 0) { |
| base::DeleteFile(upload_log_path_); |
| } else { |
| base::WriteFile(upload_log_path_, new_contents.c_str(), |
| new_contents.size()); |
| } |
| } |
| |
| void TextLogUploadList::ParseLogEntries( |
| const std::vector<std::string>& log_entries, |
| std::vector<UploadInfo>* uploads) { |
| std::vector<std::string>::const_reverse_iterator i; |
| for (i = log_entries.rbegin(); i != log_entries.rend(); ++i) { |
| const std::string& line = *i; |
| std::unique_ptr<UploadInfo> info; |
| base::Optional<base::Value> json = base::JSONReader::Read(line); |
| |
| if (json.has_value() && json->is_dict()) |
| info = TryParseJsonLogEntry(json.value()); |
| else |
| info = TryParseCsvLogEntry(line); |
| |
| if (info) |
| uploads->push_back(*info); |
| } |
| } |