Support building pgsodium on windows

.github/workflows/test.yml

@@ -3,10 +3,64 @@ name: Tests
 on: [push, pull_request]
 
 jobs:
-  tests:
+  test_linux:
+    name: Linux build and tests
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v2
+      - name: Checkout source code
+        uses: actions/checkout@v2
+
       - name: Run tests
         run: |
           ./test.sh
+  test_windows:
+    name: Windows build and tests
+    runs-on: windows-latest
+    steps:
+      - name: Checkout source code
+        uses: actions/checkout@v2
+
+      - name: Add msbuild to PATH
+        uses: microsoft/setup-msbuild@v1
+
+      - name: Install dependencies
+        run: |
+          Invoke-WebRequest -URI https://download.libsodium.org/libsodium/releases/libsodium-1.0.18-stable-msvc.zip -OutFile libsodium-1.0.18-stable-msvc.zip
+          tar -xf libsodium-1.0.18-stable-msvc.zip
+          rm libsodium-1.0.18-stable-msvc.zip
+          cp .\libsodium\x64\Release\v143\dynamic\libsodium.dll $env:PGROOT\lib
+          Invoke-WebRequest -URI https://github.com/theory/pgtap/archive/refs/tags/v1.2.0.zip -OutFile pgtap.zip
+          tar -xf pgtap.zip
+          rm pgtap.zip
+          cd pgtap-1.2.0
+          cp .\sql\pgtap.sql.in .\sql\pgtap.sql
+          perl.exe '-pi.bak' -e "s/TAPSCHEMA/tap/g" .\sql\pgtap.sql
+          perl.exe '-pi.bak' -e "s/__OS__/win32/g" .\sql\pgtap.sql
+          perl.exe '-pi.bak' -e "s/__VERSION__/0.24/g" .\sql\pgtap.sql
+          perl.exe '-pi.bak' -e "s/^-- ## //g" .\sql\pgtap.sql
+          cp .\sql\pgtap.sql $env:PGROOT\share\extension
+          cp .\pgtap.control $env:PGROOT\share\extension
+          cp .\contrib\pgtap.spec $env:PGROOT\share\contrib
+          ren $env:PGROOT\share\extension\pgtap.sql $env:PGROOT\share\extension\pgtap--1.2.0.sql
+        shell: pwsh
+
+      - name: Run msbuild
+        working-directory: ./build
+        run: |
+          msbuild pgsodium.vcxproj /p:libsodiumLocation=..\libsodium /p:PostgreSQLLocation=%PGROOT% /p:Configuration=Release /p:Platform=x64 /p:platformToolset=v143
+
+      - name: Install pgsodium, update config, and restart
+        run: |
+          cp .\build\x64\Release\pgsodium.dll $env:PGROOT\lib
+          cp pgsodium.control $env:PGROOT\share\extension
+          cp .\sql\* $env:PGROOT\share\extension
+          cp .\getkey_scripts\pgsodium_getkey.bat $env:PGDATA\
+          ((Get-Content -Path $env:PGDATA\postgresql.conf) -Replace "#shared_preload_libraries = ''","shared_preload_libraries = 'pgsodium'") | Set-Content -Path $env:PGDATA\postgresql.conf
+          Add-Content -Path  $env:PGDATA\postgresql.conf -Value ("pgsodium.getkey_script = '$env:PGDATA\pgsodium_getkey.bat'" -Replace "\\","/")
+          & $env:PGBIN\pg_ctl restart -D $env:PGDATA
+        shell: pwsh
+
+      - name: Run pgsodium tests
+        run: |
+          & $env:PGBIN\psql -q -U postgres -f .\test\test.sql
+        shell: pwsh

.gitignore

@@ -33,5 +33,10 @@
 *.su
 *~
 
+# Visual Studio Build files
+build/.vs/
+*.vcxproj.user
+build/x64/
+
 pgsodium_encrypted_root.key
 .ipynb_checkpoints/

build/pgsodium.vcxproj

@@ -0,0 +1,107 @@
+<Project DefaultTargets="Build" ToolsVersion="16.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+
+<ItemGroup>
+	<ProjectConfiguration Include="Debug|x64">
+		<Configuration>Debug</Configuration>
+		<Platform>Win64</Platform>
+	</ProjectConfiguration>
+	<ProjectConfiguration Include="Release|x64">
+		<Configuration>Release</Configuration>
+		<Platform>Win64</Platform>
+	</ProjectConfiguration>
+</ItemGroup>
+
+<Import Project="$(VCTargetsPath)\Microsoft.Cpp.default.props"/>
+
+<PropertyGroup Label="Globals">
+	<PreferredToolArchitecture>x64</PreferredToolArchitecture>
+	<ConfigurationType>DynamicLibrary</ConfigurationType>
+	<UseDynamicLibraries>true</UseDynamicLibraries>
+	<RootNamespace>pgsodium</RootNamespace>
+	<WindowsTargetPlatformVersion>10.0</WindowsTargetPlatformVersion>
+	<PlatformToolset>$(platformToolset)</PlatformToolset>
+	<CharacterSet>Unicode</CharacterSet>
+</PropertyGroup>
+
+<PropertyGroup Condition="'$(Configuration)'=='Release'" Label="Configuration">
+	<WholeProgramOptimization>true</WholeProgramOptimization>
+	<LinkIncremental>false</LinkIncremental>
+  <GenerateManifest>false</GenerateManifest>
+	<WarningLevel>Level3</WarningLevel>
+	<IntrinsicFunctions>true</IntrinsicFunctions>
+</PropertyGroup>
+
+<PropertyGroup Condition="'$(Configuration)'=='Debug'" Label="Configuration">
+	<UseDebugLibraries>true</UseDebugLibraries>
+	<LinkIncremental>true</LinkIncremental>
+  <GenerateManifest>false</GenerateManifest>
+	<WarningLevel>All</WarningLevel>
+</PropertyGroup>
+
+<Import Project="$(VCTargetsPath)\Microsoft.Cpp.props" />
+
+<ItemGroup>
+  <ClInclude Include="..\src\crypto_aead_det_xchacha20.h" />
+  <ClInclude Include="..\src\pgsodium.h" />
+  <ClInclude Include="..\src\signcrypt_tbsbr.h" />
+</ItemGroup>
+
+<ItemGroup>
+  <ClCompile Include="..\src\aead.c" />
+  <ClCompile Include="..\src\auth.c" />
+  <ClCompile Include="..\src\box.c" />
+  <ClCompile Include="..\src\crypto_aead_det_xchacha20.c" />
+  <ClCompile Include="..\src\derive.c" />
+  <ClCompile Include="..\src\hash.c" />
+  <ClCompile Include="..\src\helpers.c" />
+  <ClCompile Include="..\src\hmac.c" />
+  <ClCompile Include="..\src\kdf.c" />
+  <ClCompile Include="..\src\kx.c" />
+  <ClCompile Include="..\src\pgsodium.c" />
+  <ClCompile Include="..\src\pwhash.c" />
+  <ClCompile Include="..\src\random.c" />
+  <ClCompile Include="..\src\secretbox.c" />
+  <ClCompile Include="..\src\secretstream.c" />
+  <ClCompile Include="..\src\sha.c" />
+  <ClCompile Include="..\src\sign.c" />
+  <ClCompile Include="..\src\signcrypt.c" />
+  <ClCompile Include="..\src\signcrypt_tbsbr.c" />
+  <ClCompile Include="..\src\stream.c" />
+</ItemGroup>
+
+<ItemDefinitionGroup>
+	<ClCompile>
+		<ExceptionHandling>false</ExceptionHandling>
+		<SDLCheck>true</SDLCheck>
+		<CompileAs>CompileAsC</CompileAs>
+		<AdditionalIncludeDirectories>
+			$(PostgreSQLLocation)\include\server\port\win32_msvc;
+			$(PostgreSQLLocation)\include\server\port\win32;
+			$(PostgreSQLLocation)\include\server;
+			$(PostgreSQLLocation)\include;
+			$(libsodiumLocation)\include;
+			%(AdditionalIncludeDirectories)
+		</AdditionalIncludeDirectories>
+		<LanguageStandard>stdcpp17</LanguageStandard>
+	</ClCompile>
+
+	<Link>
+		<SubSystem>Console</SubSystem>
+		<GenerateDebugInformation>true</GenerateDebugInformation>
+		<AdditionalLibraryDirectories>
+			$(libsodiumLocation)\x64\Release\$(platformToolset)\dynamic;
+			$(PostgreSQLLocation)\lib;
+			%(AdditionalLibraryDirectories)
+		</AdditionalLibraryDirectories>
+		<AdditionalDependencies>
+			postgres.lib;
+			libsodium.lib;
+			%(AdditionalDependencies)
+		</AdditionalDependencies>
+	</Link>
+
+</ItemDefinitionGroup>
+
+<Import Project="$(VCTargetsPath)\Microsoft.Cpp.Targets" />
+
+</Project>

build/windows.md

@@ -0,0 +1,22 @@
+#### Building on Windows
+---------
+
+- Download [libsodium](https://download.libsodium.org/libsodium/releases/libsodium-1.0.18-stable-msvc.zip) >= 1.018 and unzip
+- Download and run the [postgresql installer](https://www.postgresql.org/download/windows/)
+- From the `/pgsodium/build` directory, run `msbuild` on `pgsodium.vcxproj`
+	- `msbuild` can be invoked though the *x64 Native Tools Command Prompt for VS 2022*
+
+The following properties ( **`/p`** or **`/property`** ) must be specified:
+- `libsodiumLocation`: root libsodium directory
+- `PostgreSQLLocation`: root postgresql directory, typically `C:\Program Files\PostgreSQL\<version>
+- `Configuration`: [`Release`, `Debug`]
+- `Platform`: [x64]
+- `platformToolset`: [`v142`, `v143`]
+
+ie.
+
+```
+msbuild pgsodium.vcxproj /p:libsodiumLocation="C:\libsodium" /p:PostgreSQLLocation="C:\Program Files\PostgreSQL\15" /p:Configuration=Release /p:Platform=x64 /p:platformToolset=v143
+```
+
+- Copy the `libsodium.dll` (from `libsodium\x64\Release\<platformToolset>\dynamic`) and the newly built `pgsodium.dll` into your `\PostgreSQL\<version>\lib` directory

getkey_scripts/pgsodium_getkey.bat

@@ -0,0 +1,7 @@
+@echo off
+set KEY_FILE="%PGDATA%/pgsodium_root.key"
+
+IF NOT EXIST %KEY_FILE% (
+	openssl rand -hex 32 > %KEY_FILE%
+)
+type "%PGDATA%/pgsodium_root.key"

src/aead.c

@@ -250,7 +250,7 @@ pgsodium_crypto_aead_det_keygen (PG_FUNCTION_ARGS)
 	PG_RETURN_BYTEA_P (result);
 }
 
-PG_FUNCTION_INFO_V1 (pgsodium_crypto_aead_det_noncegen);
+PGDLLEXPORT PG_FUNCTION_INFO_V1 (pgsodium_crypto_aead_det_noncegen);
 Datum
 pgsodium_crypto_aead_det_noncegen (PG_FUNCTION_ARGS)
 {

src/box.c

@@ -30,7 +30,7 @@ pgsodium_crypto_box_keypair (PG_FUNCTION_ARGS)
 	return result;
 }
 
-PG_FUNCTION_INFO_V1 (pgsodium_crypto_box_new_seed);
+PGDLLEXPORT PG_FUNCTION_INFO_V1 (pgsodium_crypto_box_new_seed);
 Datum
 pgsodium_crypto_box_new_seed (PG_FUNCTION_ARGS)
 {

src/pgsodium.c

@@ -1,5 +1,25 @@
 #include "pgsodium.h"
 
+#ifdef _WIN32
+#define X_OK 4
+#define access _access
+size_t getline(char **lineptr, size_t *n, FILE *stream)
+{
+	// We expect 64 bytes, allocate enough to be sure.
+	const int BUFFERSIZE = 1024;
+	char *buffer = malloc (BUFFERSIZE);
+	if (fgets (buffer, BUFFERSIZE - 1 , stream) == NULL)
+	{
+		free (buffer);
+		return -1;
+	}
+	*lineptr = buffer;
+	size_t char_read = strlen (*lineptr);
+	*n = char_read;
+	return char_read;
+}
+#endif
+
 PG_MODULE_MAGIC;
 
 bytea      *pgsodium_secret_key;
@@ -136,7 +156,12 @@ _PG_init (void)
 		proc_exit (1);
 	}
 
-	char_read = getline (&secret_buf, &secret_len, fp);
+	if ((char_read = getline (&secret_buf, &secret_len, fp)) == -1)
+	{
+		ereport(ERROR, errmsg("unable to read secret key"));
+		proc_exit (1);
+	}
+
 	if (secret_buf[char_read - 1] == '\n')
 		secret_buf[char_read - 1] = '\0';