ReversecLabs · KatsuragiCSL · Oct 13, 2022
diff --git a/Src/CebuLoader/CebuLoader.vcxproj b/Src/CebuLoader/CebuLoader.vcxproj
@@ -61,7 +61,7 @@
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v142</PlatformToolset>
+    <PlatformToolset>v143</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='ClangDebug|Win32'" Label="Configuration">
@@ -73,7 +73,7 @@
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>DynamicLibrary</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v142</PlatformToolset>
+    <PlatformToolset>v143</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
@@ -87,7 +87,7 @@
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='ReleaseWithDebInfo|Win32'" Label="Configuration">
     <ConfigurationType>DynamicLibrary</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v142</PlatformToolset>
+    <PlatformToolset>v143</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
@@ -101,7 +101,7 @@
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v142</PlatformToolset>
+    <PlatformToolset>v143</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='ClangDebug|x64'" Label="Configuration">
@@ -113,7 +113,7 @@
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>DynamicLibrary</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v142</PlatformToolset>
+    <PlatformToolset>v143</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
@@ -127,7 +127,7 @@
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='ReleaseWithDebInfo|x64'" Label="Configuration">
     <ConfigurationType>DynamicLibrary</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v142</PlatformToolset>
+    <PlatformToolset>v143</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>

diff --git a/Src/ChannelLinter/ChannelLinter.vcxproj b/Src/ChannelLinter/ChannelLinter.vcxproj
@@ -61,7 +61,7 @@
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v142</PlatformToolset>
+    <PlatformToolset>v143</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='ClangDebug|Win32'" Label="Configuration">
@@ -73,7 +73,7 @@
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v142</PlatformToolset>
+    <PlatformToolset>v143</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
@@ -87,7 +87,7 @@
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='ReleaseWithDebInfo|Win32'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v142</PlatformToolset>
+    <PlatformToolset>v143</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
@@ -101,7 +101,7 @@
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Debug|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>true</UseDebugLibraries>
-    <PlatformToolset>v142</PlatformToolset>
+    <PlatformToolset>v143</PlatformToolset>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='ClangDebug|x64'" Label="Configuration">
@@ -113,7 +113,7 @@
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='Release|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v142</PlatformToolset>
+    <PlatformToolset>v143</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>
@@ -127,7 +127,7 @@
   <PropertyGroup Condition="'$(Configuration)|$(Platform)'=='ReleaseWithDebInfo|x64'" Label="Configuration">
     <ConfigurationType>Application</ConfigurationType>
     <UseDebugLibraries>false</UseDebugLibraries>
-    <PlatformToolset>v142</PlatformToolset>
+    <PlatformToolset>v143</PlatformToolset>
     <WholeProgramOptimization>true</WholeProgramOptimization>
     <CharacterSet>Unicode</CharacterSet>
   </PropertyGroup>

diff --git a/Src/Common/Common.vcxitems b/Src/Common/Common.vcxitems
@@ -16,6 +16,7 @@
   <ItemGroup>
     <ClCompile Include="$(MSBuildThisFileDirectory)FSecure\C3\Interfaces\Channels\Discord.cpp" />
     <ClCompile Include="$(MSBuildThisFileDirectory)FSecure\Atlassian\JiraApi.cpp" />
+    <ClCompile Include="$(MSBuildThisFileDirectory)FSecure\C3\Interfaces\Channels\Gitlab.cpp" />
     <ClCompile Include="$(MSBuildThisFileDirectory)FSecure\C3\Interfaces\Channels\JiraIssue.cpp" />
     <ClCompile Include="$(MSBuildThisFileDirectory)FSecure\C3\Interfaces\Channels\LDAP.cpp" />
     <ClCompile Include="$(MSBuildThisFileDirectory)FSecure\C3\Interfaces\Channels\GoogleDrive.cpp" />
@@ -44,6 +45,7 @@
     <ClCompile Include="$(MSBuildThisFileDirectory)FSecure\Crypto\String.cpp" />
     <ClCompile Include="$(MSBuildThisFileDirectory)FSecure\Discord\DiscordApi.cpp" />
     <ClCompile Include="$(MSBuildThisFileDirectory)FSecure\Dropbox\DropboxApi.cpp" />
+    <ClCompile Include="$(MSBuildThisFileDirectory)FSecure\Gitlab\GitlabApi.cpp" />
     <ClCompile Include="$(MSBuildThisFileDirectory)FSecure\GoogleDrive\GoogleDriveApi.cpp" />
     <ClCompile Include="$(MSBuildThisFileDirectory)FSecure\Github\GithubApi.cpp" />
     <ClCompile Include="$(MSBuildThisFileDirectory)FSecure\Mattermost\MattermostApi.cpp" />
@@ -71,6 +73,7 @@
     <ClInclude Include="$(MSBuildThisFileDirectory)CppRestSdk\include\cpprest\http_client.h" />
     <ClInclude Include="$(MSBuildThisFileDirectory)FSecure\C3\Interfaces\Channels\Discord.h" />
     <ClInclude Include="$(MSBuildThisFileDirectory)FSecure\Atlassian\JiraApi.h" />
+    <ClInclude Include="$(MSBuildThisFileDirectory)FSecure\C3\Interfaces\Channels\Gitlab.h" />
     <ClInclude Include="$(MSBuildThisFileDirectory)FSecure\C3\Interfaces\Channels\GoogleDrive.h" />
     <ClInclude Include="$(MSBuildThisFileDirectory)FSecure\C3\Interfaces\Channels\JiraIssue.h" />
     <ClInclude Include="$(MSBuildThisFileDirectory)FSecure\C3\Interfaces\Channels\LDAP.h" />
@@ -89,6 +92,7 @@
     <ClInclude Include="$(MSBuildThisFileDirectory)FSecure\CppTools\ByteConverter\Utils.h" />
     <ClInclude Include="$(MSBuildThisFileDirectory)FSecure\CppTools\StringConversions.h" />
     <ClInclude Include="$(MSBuildThisFileDirectory)FSecure\Discord\DiscordApi.h" />
+    <ClInclude Include="$(MSBuildThisFileDirectory)FSecure\Gitlab\GitlabApi.h" />
     <ClInclude Include="$(MSBuildThisFileDirectory)FSecure\GoogleDrive\GoogleDriveApi.h" />
     <ClInclude Include="$(MSBuildThisFileDirectory)FSecure\Github\GithubApi.h" />
     <ClInclude Include="$(MSBuildThisFileDirectory)FSecure\Mattermost\MattermostApi.h" />

diff --git a/Src/Common/Common.vcxitems.filters b/Src/Common/Common.vcxitems.filters
@@ -48,6 +48,8 @@
     <ClCompile Include="$(MSBuildThisFileDirectory)FSecure\Mattermost\MattermostApi.cpp" />
     <ClCompile Include="$(MSBuildThisFileDirectory)FSecure\Atlassian\JiraApi.cpp" />
     <ClCompile Include="$(MSBuildThisFileDirectory)FSecure\C3\Interfaces\Channels\JiraIssue.cpp" />
+    <ClCompile Include="$(MSBuildThisFileDirectory)FSecure\Gitlab\GitlabApi.cpp" />
+    <ClCompile Include="$(MSBuildThisFileDirectory)FSecure\C3\Interfaces\Channels\Gitlab.cpp" />
   </ItemGroup>
   <ItemGroup>
     <ClInclude Include="$(MSBuildThisFileDirectory)CppCodec\base32_default_crockford.hpp" />
@@ -151,5 +153,7 @@
     <ClInclude Include="$(MSBuildThisFileDirectory)FSecure\WinHttp\Handles\ProxyHelpers.h" />
     <ClInclude Include="$(MSBuildThisFileDirectory)FSecure\Atlassian\JiraApi.h" />
     <ClInclude Include="$(MSBuildThisFileDirectory)FSecure\C3\Interfaces\Channels\JiraIssue.h" />
+    <ClInclude Include="$(MSBuildThisFileDirectory)FSecure\Gitlab\GitlabApi.h" />
+    <ClInclude Include="$(MSBuildThisFileDirectory)FSecure\C3\Interfaces\Channels\Gitlab.h" />
   </ItemGroup>
-</Project>
+</Project>
diff --git a/Src/Common/FSecure/C3/Interfaces/Channels/Gitlab.cpp b/Src/Common/FSecure/C3/Interfaces/Channels/Gitlab.cpp
@@ -0,0 +1,134 @@
+#include "Stdafx.h"
+#include "Gitlab.h"
+#include "Common/FSecure/Crypto/Base64.h"
+
+//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+FSecure::C3::Interfaces::Channels::Gitlab::Gitlab(ByteView arguments)
+	: m_inboundDirectionName{ arguments.Read<std::string>() }
+	, m_outboundDirectionName{ arguments.Read<std::string>() }
+{
+	auto [GitlabToken, channelName, userAgent] = arguments.Read<std::string, std::string, std::string>();
+	m_gitlabObj = FSecure::GitlabApi{ GitlabToken, channelName, userAgent };
+}
+
+//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+size_t FSecure::C3::Interfaces::Channels::Gitlab::OnSendToChannel(ByteView data)
+{
+	// There is a cap on uploads of files >150mb at which point different APIs are required.
+	data = data.SubString(0, 100 * 1024 * 1024);
+	m_gitlabObj.WriteMessageToFile(m_outboundDirectionName, data);
+	return data.size();
+}
+
+//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+std::vector<FSecure::ByteVector> FSecure::C3::Interfaces::Channels::Gitlab::OnReceiveFromChannel()
+{
+	std::vector<ByteVector> ret;
+	for (auto& [ts, id] : m_gitlabObj.GetMessagesByDirection(m_inboundDirectionName))
+	{
+		ret.push_back(m_gitlabObj.ReadFile(id));
+		m_gitlabObj.DeleteFile(id);
+	}
+
+	return ret;
+}
+
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+FSecure::ByteVector FSecure::C3::Interfaces::Channels::Gitlab::OnRunCommand(ByteView command)
+{
+	auto commandCopy = command; //each read moves ByteView. CommandCopy is needed  for default.
+	switch (command.Read<uint16_t>())
+	{
+	case 0:
+		UploadFile(command);
+		return {};
+	case 1:
+		DeleteAllFiles();
+		return {};
+	default:
+		return AbstractChannel::OnRunCommand(commandCopy);
+	}
+}
+
+void FSecure::C3::Interfaces::Channels::Gitlab::UploadFile(ByteView args)
+{
+	m_gitlabObj.UploadFile(args.Read<std::string>());
+}
+
+
+void FSecure::C3::Interfaces::Channels::Gitlab::DeleteAllFiles()
+{
+	m_gitlabObj.DeleteAllFiles();
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+const char* FSecure::C3::Interfaces::Channels::Gitlab::GetCapability()
+{
+	return R"_(
+{
+	"create":
+	{
+		"arguments":
+		[
+			[
+				{
+					"type": "string",
+					"name": "Input ID",
+					"min": 4,
+					"randomize": true,
+					"description": "Used to distinguish packets for the channel"
+				},
+				{
+					"type": "string",
+					"name": "Output ID",
+					"min": 4,
+					"randomize": true,
+					"description": "Used to distinguish packets from the channel"
+				}
+			],
+			{
+				"type": "string",
+				"name": "Gitlab token",
+				"min": 1,
+				"description": "This token is what channel needs to interact with Gitlab's API"
+			},
+			{
+				"type": "string",
+				"name": "Project name",
+				"min": 4,
+				"randomize": true,
+				"description": "Project to create for channel"
+			},
+			{
+				"type": "string",
+				"name": "User-Agent Header",
+				"description": "The User-Agent header to set. Warning: adding user agent header of web browser, can cause site security provider to block access to api, and prevent channel from functioning."
+			}
+		]
+	},
+	"commands":
+	[
+		{
+			"name": "Upload File from Relay",
+			"id": 0,
+			"description": "Upload file from host running Relay directly to Gitlab",
+			"arguments":
+			[
+				{
+                    "type" : "string",
+					"name": "Remote Filepath",
+					"description" : "Path to upload."
+				}
+			]
+		},
+		{
+			"name": "Remove All Files",
+			"id": 1,
+			"description": "Delete channel folder and all files within it.",
+			"arguments": []
+		}
+	]
+}
+)_";
+}
diff --git a/Src/Common/FSecure/C3/Interfaces/Channels/Gitlab.h b/Src/Common/FSecure/C3/Interfaces/Channels/Gitlab.h
@@ -0,0 +1,56 @@
+#pragma once
+#include "Common/FSecure/Gitlab/GitlabApi.h"
+
+namespace FSecure::C3::Interfaces::Channels
+{
+	///Implementation of the Github Channel.
+	struct Gitlab : public Channel<Gitlab>
+	{
+		/// Public constructor.
+		/// @param arguments factory arguments.
+		Gitlab(ByteView arguments);
+
+		/// Destructor
+		virtual ~Gitlab() = default;
+
+		/// OnSend callback implementation.
+		/// @param packet data to send to Channel.
+		/// @returns size_t number of bytes successfully written.
+		size_t OnSendToChannel(ByteView packet);
+
+		/// Reads a single C3 packet from Channel.
+		/// @return packet retrieved from Channel.
+		std::vector<ByteVector> OnReceiveFromChannel();
+
+		/// Get channel capability.
+		/// @returns Channel capability in JSON format
+		static const char* GetCapability();
+
+		/// Values used as default for channel jitter. 30 ms if unset. Current jitter value can be changed at runtime.
+		/// Set long delay otherwise Github rate limit will heavily impact channel.
+		constexpr static std::chrono::milliseconds s_MinUpdateDelay = 3500ms, s_MaxUpdateDelay = 6500ms;
+
+		/// Processes internal (C3 API) Command.
+		/// @param command a buffer containing whole command and it's parameters.
+		/// @return command result.
+		ByteVector OnRunCommand(ByteView command) override;
+
+	protected:
+		/// The inbound direction name of data
+		std::string m_inboundDirectionName;
+
+		/// The outbound direction name, the opposite of m_inboundDirectionName
+		std::string m_outboundDirectionName;
+
+		/// Uploads file.
+		/// @param path to file to be uploaded.
+		void UploadFile(ByteView args);
+
+		/// Delete all files relating to the channel.
+		void DeleteAllFiles();
+
+	private:
+		/// An object encapsulating Github's API, providing methods allowing the consumer to upload and download files from Github, among other things.
+		FSecure::GitlabApi m_gitlabObj;
+	};
+}