From 1aa8a4d46ffbf019f6bb4bccb81cc89bec07bb38 Mon Sep 17 00:00:00 2001
From: ssdsnake <id4-ssdsnake@proxyid.net>
Date: Fri, 3 Dec 2021 15:40:19 -0600
Subject: DolphinTool: CLI utility interface and disc image tools

---
 Source/Core/DolphinTool/VerifyCommand.cpp | 175 ++++++++++++++++++++++++++++++
 1 file changed, 175 insertions(+)
 create mode 100644 Source/Core/DolphinTool/VerifyCommand.cpp

(limited to 'Source/Core/DolphinTool/VerifyCommand.cpp')

diff --git a/Source/Core/DolphinTool/VerifyCommand.cpp b/Source/Core/DolphinTool/VerifyCommand.cpp
new file mode 100644
index 0000000000..6eb920a6f2
--- /dev/null
+++ b/Source/Core/DolphinTool/VerifyCommand.cpp
@@ -0,0 +1,175 @@
+// Copyright 2021 Dolphin Emulator Project
+// SPDX-License-Identifier: GPL-2.0-or-later
+
+#include "DolphinTool/VerifyCommand.h"
+
+#include <OptionParser.h>
+
+namespace DolphinTool
+{
+int VerifyCommand::Main(const std::vector<std::string>& args)
+{
+  auto parser = std::make_unique<optparse::OptionParser>();
+
+  parser->usage("usage: verify [options]...");
+
+  parser->add_option("-i", "--input")
+      .type("string")
+      .action("store")
+      .help("Path to disc image FILE.")
+      .metavar("FILE");
+
+  parser->add_option("-a", "--algorithm")
+      .type("string")
+      .action("store")
+      .help("Optional. Compute and print the digest using the selected algorithm, then exit. "
+            "[%choices]")
+      .choices({"crc32", "md5", "sha1"});
+
+  const optparse::Values& options = parser->parse_args(args);
+
+  // Validate options
+  const std::string input_file_path = static_cast<const char*>(options.get("input"));
+  if (input_file_path.empty())
+  {
+    std::cerr << "Error: No input set" << std::endl;
+    return 1;
+  }
+
+  std::optional<std::string> algorithm;
+  if (options.is_set("algorithm"))
+  {
+    algorithm = static_cast<const char*>(options.get("algorithm"));
+  }
+
+  bool enable_crc32 = algorithm == std::nullopt || algorithm == "crc32";
+  bool enable_md5 = algorithm == std::nullopt || algorithm == "md5";
+  bool enable_sha1 = algorithm == std::nullopt || algorithm == "sha1";
+
+  if (!enable_crc32 && !enable_md5 && !enable_sha1)
+  {
+    // optparse should protect from this
+    std::cerr << "Error: No algorithms selected for the operation" << std::endl;
+    return 1;
+  }
+
+  // Open the volume
+  std::shared_ptr<DiscIO::VolumeDisc> volume = DiscIO::CreateDisc(input_file_path);
+  if (!volume)
+  {
+    std::cerr << "Error: Unable to open disc image" << std::endl;
+    return 1;
+  }
+
+  // Verify the volume
+  const std::optional<DiscIO::VolumeVerifier::Result> result =
+      VerifyVolume(volume, enable_crc32, enable_md5, enable_sha1);
+  if (!result)
+  {
+    std::cerr << "Error: Unable to verify volume" << std::endl;
+    return 1;
+  }
+
+  if (algorithm == std::nullopt)
+  {
+    PrintFullReport(result);
+  }
+  else
+  {
+    if (enable_crc32 && !result->hashes.crc32.empty())
+      std::cout << HashToHexString(result->hashes.crc32) << std::endl;
+    else if (enable_md5 && !result->hashes.md5.empty())
+      std::cout << HashToHexString(result->hashes.md5) << std::endl;
+    else if (enable_sha1 && !result->hashes.sha1.empty())
+      std::cout << HashToHexString(result->hashes.sha1) << std::endl;
+    else
+    {
+      std::cerr << "Error: No hash available" << std::endl;
+      return 1;
+    }
+  }
+
+  return 0;
+}
+
+void VerifyCommand::PrintFullReport(const std::optional<DiscIO::VolumeVerifier::Result> result)
+{
+  if (!result->hashes.crc32.empty())
+    std::cout << "CRC32: " << HashToHexString(result->hashes.crc32) << std::endl;
+  else
+    std::cout << "CRC32 not available" << std::endl;
+
+  if (!result->hashes.md5.empty())
+    std::cout << "MD5: " << HashToHexString(result->hashes.md5) << std::endl;
+  else
+    std::cout << "MD5 not available" << std::endl;
+
+  if (!result->hashes.sha1.empty())
+    std::cout << "SHA1: " << HashToHexString(result->hashes.sha1) << std::endl;
+  else
+    std::cout << "SHA1 not available" << std::endl;
+
+  std::cout << "Problems Found: " << (result->problems.size() > 0 ? "Yes" : "No") << std::endl;
+
+  for (int i = 0; i < static_cast<int>(result->problems.size()); ++i)
+  {
+    const DiscIO::VolumeVerifier::Problem problem = result->problems[i];
+
+    std::cout << std::endl << "Severity: ";
+    switch (problem.severity)
+    {
+    case DiscIO::VolumeVerifier::Severity::Low:
+      std::cout << "Low";
+      break;
+    case DiscIO::VolumeVerifier::Severity::Medium:
+      std::cout << "Medium";
+      break;
+    case DiscIO::VolumeVerifier::Severity::High:
+      std::cout << "High";
+      break;
+    case DiscIO::VolumeVerifier::Severity::None:
+      std::cout << "None";
+      break;
+    default:
+      ASSERT(false);
+      break;
+    }
+    std::cout << std::endl;
+
+    std::cout << "Summary: " << problem.text << std::endl << std::endl;
+  }
+}
+
+std::optional<DiscIO::VolumeVerifier::Result>
+VerifyCommand::VerifyVolume(std::shared_ptr<DiscIO::VolumeDisc> volume, bool enable_crc32,
+                            bool enable_md5, bool enable_sha1)
+{
+  if (!volume)
+    return std::nullopt;
+
+  DiscIO::VolumeVerifier verifier(*volume, false, {enable_crc32, enable_md5, enable_sha1});
+
+  verifier.Start();
+  while (verifier.GetBytesProcessed() != verifier.GetTotalBytes())
+  {
+    verifier.Process();
+  }
+  verifier.Finish();
+
+  const DiscIO::VolumeVerifier::Result result = verifier.GetResult();
+
+  return result;
+}
+
+std::string VerifyCommand::HashToHexString(const std::vector<u8>& hash)
+{
+  std::stringstream ss;
+  ss << std::hex;
+  for (int i = 0; i < static_cast<int>(hash.size()); ++i)
+  {
+    ss << std::setw(2) << std::setfill('0') << static_cast<int>(hash[i]);
+  }
+  return ss.str();
+}
+
+}  // namespace DolphinTool
-- 
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