1.0.0

Author: robert

.gitattributes

@@ -0,0 +1,2 @@
+# Auto detect text files and perform LF normalization
+* text=auto

.gitignore

@@ -0,0 +1,38 @@
+# Prerequisites
+*.d
+
+# Compiled Object files
+*.slo
+*.lo
+*.o
+*.obj
+
+# Precompiled Headers
+*.gch
+*.pch
+
+# Compiled Dynamic libraries
+*.so
+*.dylib
+*.dll
+
+# Fortran module files
+*.mod
+*.smod
+
+# Compiled Static libraries
+*.lai
+*.la
+*.a
+*.lib
+
+# Executables
+*.exe
+*.out
+*.app
+
+# Ignore .vs folder
+.vs/
+
+# Ignore x64/release folder
+x64\Release

LICENSE

@@ -0,0 +1,201 @@
+Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.

Shredder.sln

@@ -0,0 +1,31 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.8.34408.163
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{8BC9CEB8-8B4A-11D0-8D11-00A0C91BC942}") = "Shredder", "Shredder\Shredder.vcxproj", "{FE9B9DF0-3627-4A86-9F67-F47B54B922EF}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|x64 = Debug|x64
+		Debug|x86 = Debug|x86
+		Release|x64 = Release|x64
+		Release|x86 = Release|x86
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{FE9B9DF0-3627-4A86-9F67-F47B54B922EF}.Debug|x64.ActiveCfg = Debug|x64
+		{FE9B9DF0-3627-4A86-9F67-F47B54B922EF}.Debug|x64.Build.0 = Debug|x64
+		{FE9B9DF0-3627-4A86-9F67-F47B54B922EF}.Debug|x86.ActiveCfg = Debug|Win32
+		{FE9B9DF0-3627-4A86-9F67-F47B54B922EF}.Debug|x86.Build.0 = Debug|Win32
+		{FE9B9DF0-3627-4A86-9F67-F47B54B922EF}.Release|x64.ActiveCfg = Release|x64
+		{FE9B9DF0-3627-4A86-9F67-F47B54B922EF}.Release|x64.Build.0 = Release|x64
+		{FE9B9DF0-3627-4A86-9F67-F47B54B922EF}.Release|x86.ActiveCfg = Release|Win32
+		{FE9B9DF0-3627-4A86-9F67-F47B54B922EF}.Release|x86.Build.0 = Release|Win32
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {0CF93717-87BC-44C8-85AE-8D487A6D53C0}
+	EndGlobalSection
+EndGlobal

Shredder/Shredder.cpp

@@ -0,0 +1,105 @@
+#include <iostream>
+#include <fstream>
+#include <vector>
+#include <algorithm>
+#include <random>
+#include <chrono>
+#include <filesystem>
+
+namespace file = std::filesystem;
+
+inline std::vector<char> generateRandomPattern(std::size_t size) {
+	std::vector<char> pattern(size);
+	std::mt19937 engine(static_cast<unsigned int>(std::chrono::steady_clock::now().time_since_epoch().count()));
+	std::uniform_int_distribution<int> distribution(500, 5000);
+
+	for (auto& element : pattern) {
+		element = static_cast<char>(distribution(engine));
+	}
+
+	return pattern;
+}
+
+inline static void shredFile(const std::string& filePath, int iterations) {
+	try {
+		auto fileSize = file::file_size(filePath);
+		std::vector<char> buffer(fileSize, 0);
+
+		for (int iteration = 0; iteration < iterations; ++iteration) {
+			std::ifstream inputFile(filePath, std::ios::binary);
+			inputFile.read(buffer.data(), fileSize);
+			inputFile.close();
+
+			std::ofstream outputFile(filePath, std::ios::binary | std::ios::trunc);
+
+			auto pattern = generateRandomPattern(fileSize);
+			for (int i = 0; i < 10; ++i) {
+				auto offset = static_cast<std::size_t>(std::rand() % static_cast<int>(fileSize - pattern.size() + 1));
+				std::copy(pattern.begin(), pattern.end(), buffer.begin() + offset);
+			}
+
+			outputFile.write(buffer.data(), fileSize);
+			outputFile.close();
+
+			// Print progress information for the user
+			float percentComplete = static_cast<float>(iteration + 1) / iterations * 100.0f;
+			std::cout << "Shredding file... " << std::fixed << percentComplete << "% complete\n";
+		}
+	}
+	catch (const std::exception& e) {
+		std::cerr << "Error: " << e.what() << "\n";
+		std::exit(1);
+	}
+}
+
+int main(int argc, char* argv[]) {
+	if (argc == 1) {
+		std::cout << "Usage: shredder -f <file location> -i <number of iterations>\n"
+			<< "The more times you shred the file, the harder it will be to recover.\n"
+			<< "Default number of iterations is 3.\n";
+		std::exit(0);
+	}
+
+	if (argc != 5) {
+		std::cout << "Invalid command-line arguments.\n";
+		std::exit(1);
+	}
+
+	std::string filePath = argv[2];
+	int iterations = std::atoi(argv[4]);
+
+	if (iterations < 1 || iterations > 25) {
+		std::cout << "Invalid number of iterations.\n";
+		std::exit(1);
+	}
+
+	if (!file::exists(filePath)) {
+		std::cout << "File not found.\n";
+		std::exit(1);
+	}
+
+	try {
+		std::size_t fileSize = file::file_size(filePath);
+
+		if (fileSize < 1 || fileSize > 100'000'000) {
+			std::cout << "Invalid file size.\n";
+			return 1;
+		}
+
+		if ((file::status(filePath).permissions() & file::perms::owner_write) == file::perms::none) {
+			std::cout << "You do not have permission to shred this file.\n";
+			return 1;
+		}
+
+		shredFile(filePath, iterations);
+
+		file::remove(filePath);
+		std::cout << "File: " << filePath << " -> shredded successfully.\n";
+	}
+	catch (const std::exception& e) {
+		std::cerr << "Error: " << e.what() << "\n";
+		return 1;
+	}
+
+	return 0;
+}