From fd03a905d0671edeffde43ade486dc608bf69d95 Mon Sep 17 00:00:00 2001
From: alexnick <alexnick@yandex-team.ru>
Date: Thu, 17 Feb 2022 14:23:34 +0300
Subject: remove tvm dependecy KIKIMR-14386

ref:d40a6e54d3da55ed1f9c9a0763552940acb0988b
---
 library/cpp/tvmauth/client/misc/disk_cache.cpp | 165 -------------------------
 1 file changed, 165 deletions(-)
 delete mode 100644 library/cpp/tvmauth/client/misc/disk_cache.cpp

(limited to 'library/cpp/tvmauth/client/misc/disk_cache.cpp')

diff --git a/library/cpp/tvmauth/client/misc/disk_cache.cpp b/library/cpp/tvmauth/client/misc/disk_cache.cpp
deleted file mode 100644
index 3c01be4a837..00000000000
--- a/library/cpp/tvmauth/client/misc/disk_cache.cpp
+++ /dev/null
@@ -1,165 +0,0 @@
-#include "disk_cache.h"
-
-#include <library/cpp/tvmauth/client/logger.h>
-
-#include <contrib/libs/openssl/include/openssl/evp.h>
-#include <contrib/libs/openssl/include/openssl/hmac.h>
-#include <contrib/libs/openssl/include/openssl/sha.h>
-
-#include <util/folder/path.h>
-#include <util/stream/file.h>
-#include <util/stream/str.h>
-#include <util/system/fs.h>
-#include <util/system/sysstat.h>
-#include <util/system/tempfile.h>
-
-#include <exception>
-
-namespace NTvmAuth {
-    static const size_t HASH_SIZE = 32;
-    static const size_t TIMESTAMP_SIZE = sizeof(time_t);
-
-    TDiskReader::TDiskReader(const TString& filename, ILogger* logger)
-        : Filename_(filename)
-        , Logger_(logger)
-    {
-    }
-
-    bool TDiskReader::Read() {
-        TStringStream s;
-
-        try {
-            if (!NFs::Exists(Filename_)) {
-                if (Logger_) {
-                    s << "File '" << Filename_ << "' does not exist";
-                    Logger_->Debug(s.Str());
-                }
-                return false;
-            }
-
-            TFile file(Filename_, OpenExisting | RdOnly | Seq);
-            file.Flock(LOCK_SH | LOCK_NB);
-
-            TFileInput input(file);
-            return ParseData(input.ReadAll());
-        } catch (const std::exception& e) {
-            if (Logger_) {
-                s << "Failed to read '" << Filename_ << "': " << e.what();
-                Logger_->Error(s.Str());
-            }
-        }
-
-        return false;
-    }
-
-    bool TDiskReader::ParseData(TStringBuf buf) {
-        TStringStream s;
-
-        if (buf.size() <= HASH_SIZE + TIMESTAMP_SIZE) {
-            if (Logger_) {
-                s << "File '" << Filename_ << "' is too small";
-                Logger_->Warning(s.Str());
-            }
-            return false;
-        }
-
-        TStringBuf hash = buf.SubStr(0, HASH_SIZE);
-        if (hash != GetHash(buf.Skip(HASH_SIZE))) {
-            if (Logger_) {
-                s << "Content of '" << Filename_ << "' was incorrectly changed";
-                Logger_->Warning(s.Str());
-            }
-            return false;
-        }
-
-        Time_ = TInstant::Seconds(GetTimestamp(buf.substr(0, TIMESTAMP_SIZE)));
-        Data_ = buf.Skip(TIMESTAMP_SIZE);
-
-        if (Logger_) {
-            s << "File '" << Filename_ << "' was successfully read";
-            Logger_->Info(s.Str());
-        }
-        return true;
-    }
-
-    TString TDiskReader::GetHash(TStringBuf data) {
-        TString value(EVP_MAX_MD_SIZE, 0);
-        unsigned macLen = 0;
-        if (!::HMAC(EVP_sha256(),
-                    "",
-                    0,
-                    (unsigned char*)data.data(),
-                    data.size(),
-                    (unsigned char*)value.data(),
-                    &macLen)) {
-            return {};
-        }
-
-        if (macLen != EVP_MAX_MD_SIZE) {
-            value.resize(macLen);
-        }
-
-        return value;
-    }
-
-    time_t TDiskReader::GetTimestamp(TStringBuf data) {
-        time_t time = 0;
-        for (int idx = TIMESTAMP_SIZE - 1; idx >= 0; --idx) {
-            time <<= 8;
-            time |= static_cast<unsigned char>(data.at(idx));
-        }
-        return time;
-    }
-
-    TDiskWriter::TDiskWriter(const TString& filename, ILogger* logger)
-        : Filename_(filename)
-        , Logger_(logger)
-    {
-    }
-
-    bool TDiskWriter::Write(TStringBuf data, TInstant now) {
-        TStringStream s;
-
-        try {
-            {
-                if (NFs::Exists(Filename_)) {
-                    Chmod(Filename_.c_str(),
-                          S_IRUSR | S_IWUSR); // 600
-                }
-
-                TFile file(Filename_, CreateAlways | WrOnly | Seq | AWUser | ARUser);
-                file.Flock(LOCK_EX | LOCK_NB);
-
-                TFileOutput output(file);
-                output << PrepareData(now, data);
-            }
-
-            if (Logger_) {
-                s << "File '" << Filename_ << "' was successfully written";
-                Logger_->Info(s.Str());
-            }
-            return true;
-        } catch (const std::exception& e) {
-            if (Logger_) {
-                s << "Failed to write '" << Filename_ << "': " << e.what();
-                Logger_->Error(s.Str());
-            }
-        }
-
-        return false;
-    }
-
-    TString TDiskWriter::PrepareData(TInstant time, TStringBuf data) {
-        TString toHash = WriteTimestamp(time.TimeT()) + data;
-        return TDiskReader::GetHash(toHash) + toHash;
-    }
-
-    TString TDiskWriter::WriteTimestamp(time_t time) {
-        TString res(TIMESTAMP_SIZE, 0);
-        for (size_t idx = 0; idx < TIMESTAMP_SIZE; ++idx) {
-            res[idx] = time & 0xFF;
-            time >>= 8;
-        }
-        return res;
-    }
-}
-- 
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