Build an apphost with hostfxr and hostpolicy linked in

eng/SignCheckExclusionsFile.txt

@@ -7,6 +7,7 @@
 ;; and SCD apps. If they are signed, the file that the SDK produces has an invalid signature and
 ;; can't be signed again. More info at https://github.com/dotnet/core-setup/pull/7549.
 *apphost.exe;;Template, https://github.com/dotnet/core-setup/pull/7549
+*singlefilehost.exe;;Template, https://github.com/dotnet/core-setup/pull/7549
 *comhost.dll;;Template, https://github.com/dotnet/core-setup/pull/7549
 *apphosttemplateapphostexe.exe;;Template, https://github.com/dotnet/core-setup/pull/7549
 *comhosttemplatecomhostdll.dll;;Template, https://github.com/dotnet/core-setup/pull/7549

eng/Signing.props

@@ -24,7 +24,7 @@
     <BundleInstallerExeArtifact Include="$(ArtifactsPackagesDir)**/*.exe" />
 
     <!-- apphost and comhost template files are not signed, by design. -->
-    <FileSignInfo Include="apphost.exe;comhost.dll" CertificateName="None" />
+    <FileSignInfo Include="apphost.exe;singlefilehost.exe;comhost.dll" CertificateName="None" />
   </ItemGroup>
 
   <ItemGroup Condition="'$(CrossTargetComponentFolder)' != ''">

eng/native/functions.cmake

@@ -175,8 +175,8 @@ function(generate_exports_file)
 
   add_custom_command(
     OUTPUT ${outputFilename}
-    COMMAND ${AWK} -f ${CMAKE_SOURCE_DIR}/${AWK_SCRIPT} ${INPUT_LIST} >${outputFilename}
-    DEPENDS ${INPUT_LIST} ${CMAKE_SOURCE_DIR}/${AWK_SCRIPT}
+    COMMAND ${AWK} -f ${CLR_ENG_NATIVE_DIR}/${AWK_SCRIPT} ${INPUT_LIST} >${outputFilename}
+    DEPENDS ${INPUT_LIST} ${CLR_ENG_NATIVE_DIR}/${AWK_SCRIPT}
     COMMENT "Generating exports file ${outputFilename}"
   )
   set_source_files_properties(${outputFilename}
@@ -196,8 +196,8 @@ function(generate_exports_file_prefix inputFilename outputFilename prefix)
 
   add_custom_command(
     OUTPUT ${outputFilename}
-    COMMAND ${AWK} -f ${CMAKE_SOURCE_DIR}/${AWK_SCRIPT} ${AWK_VARS} ${inputFilename} >${outputFilename}
-    DEPENDS ${inputFilename} ${CMAKE_SOURCE_DIR}/${AWK_SCRIPT}
+    COMMAND ${AWK} -f ${CLR_ENG_NATIVE_DIR}/${AWK_SCRIPT} ${AWK_VARS} ${inputFilename} >${outputFilename}
+    DEPENDS ${inputFilename} ${CLR_ENG_NATIVE_DIR}/${AWK_SCRIPT}
     COMMENT "Generating exports file ${outputFilename}"
   )
   set_source_files_properties(${outputFilename}

src/installer/corehost/cli/CMakeLists.txt

@@ -1,10 +1,10 @@
 add_subdirectory(hostcommon)
 add_subdirectory(apphost)
 add_subdirectory(dotnet)
-add_subdirectory(fxr)
-add_subdirectory(hostpolicy)
 add_subdirectory(nethost)
 add_subdirectory(test_fx_ver)
+add_subdirectory(fxr)
+add_subdirectory(hostpolicy)
 
 add_subdirectory(test)
 

src/installer/corehost/cli/apphost/CMakeLists.txt

@@ -2,49 +2,5 @@
 # The .NET Foundation licenses this file to you under the MIT license.
 # See the LICENSE file in the project root for more information.
 
-project(apphost)
-set(DOTNET_PROJECT_NAME "apphost")
-
-# Add RPATH to the apphost binary that allows using local copies of shared libraries
-# dotnet core depends on for special scenarios when system wide installation of such
-# dependencies is not possible for some reason.
-# This cannot be enabled for MacOS (Darwin) since its RPATH works in a different way,
-# doesn't apply to libraries loaded via dlopen and most importantly, it is not transitive.
-if (NOT CLR_CMAKE_TARGET_OSX)
-    set(CMAKE_BUILD_WITH_INSTALL_RPATH TRUE)
-    set(CMAKE_INSTALL_RPATH "\$ORIGIN/netcoredeps")
-endif()
-
-set(SKIP_VERSIONING 1)
-
-set(SOURCES
-    ./bundle_marker.cpp
-)
-
-set(HEADERS
-    ./bundle_marker.h
-)
-
-if(CLR_CMAKE_TARGET_WIN32)
-    list(APPEND SOURCES
-        apphost.windows.cpp)
-
-    list(APPEND HEADERS
-        apphost.windows.h)
-endif()
-
-include(../exe.cmake)
-
-add_definitions(-DFEATURE_APPHOST=1)
-
-# Disable manifest generation into the file .exe on Windows
-if(CLR_CMAKE_TARGET_WIN32)
-    set_property(TARGET ${PROJECT_NAME} PROPERTY
-            LINK_FLAGS "/MANIFEST:NO"
-        )
-endif()
-
-# Specify non-default Windows libs to be used for Arm/Arm64 builds
-if (CLR_CMAKE_TARGET_WIN32 AND (CLR_CMAKE_TARGET_ARCH_ARM OR CLR_CMAKE_TARGET_ARCH_ARM64))
-    target_link_libraries(apphost Advapi32.lib shell32.lib)
-endif()
+add_subdirectory(static)
+add_subdirectory(standalone)

src/installer/corehost/cli/apphost/standalone/CMakeLists.txt

@@ -0,0 +1,54 @@
+# Licensed to the .NET Foundation under one or more agreements.
+# The .NET Foundation licenses this file to you under the MIT license.
+# See the LICENSE file in the project root for more information.
+
+project(apphost)
+set(DOTNET_PROJECT_NAME "apphost")
+
+# Add RPATH to the apphost binary that allows using local copies of shared libraries
+# dotnet core depends on for special scenarios when system wide installation of such
+# dependencies is not possible for some reason.
+# This cannot be enabled for MacOS (Darwin) since its RPATH works in a different way,
+# doesn't apply to libraries loaded via dlopen and most importantly, it is not transitive.
+if (NOT CLR_CMAKE_TARGET_OSX)
+    set(CMAKE_BUILD_WITH_INSTALL_RPATH TRUE)
+    set(CMAKE_INSTALL_RPATH "\$ORIGIN/netcoredeps")
+endif()
+
+set(SKIP_VERSIONING 1)
+
+include_directories(..)
+
+set(SOURCES
+    ../bundle_marker.cpp
+    ./hostfxr_resolver_t.cpp
+)
+
+set(HEADERS
+    ../bundle_marker.h
+    ../../../hostfxr_resolver_t.h
+)
+
+if(CLR_CMAKE_TARGET_WIN32)
+    list(APPEND SOURCES
+        ../apphost.windows.cpp)
+
+    list(APPEND HEADERS
+        ../apphost.windows.h)
+endif()
+
+include(../../exe.cmake)
+
+add_definitions(-DFEATURE_APPHOST=1)
+
+# Disable manifest generation into the file .exe on Windows
+if(CLR_CMAKE_TARGET_WIN32)
+    set_property(TARGET ${PROJECT_NAME} PROPERTY
+            LINK_FLAGS "/MANIFEST:NO"
+        )
+endif()
+
+# Specify non-default Windows libs to be used for Arm/Arm64 builds
+if (CLR_CMAKE_TARGET_WIN32 AND (CLR_CMAKE_TARGET_ARCH_ARM OR CLR_CMAKE_TARGET_ARCH_ARM64))
+    target_link_libraries(apphost Advapi32.lib shell32.lib)
+endif()

src/installer/corehost/cli/apphost/standalone/hostfxr_resolver_t.cpp

@@ -0,0 +1,61 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+#include <assert.h>
+
+#include "pal.h"
+#include "fxr_resolver.h"
+#include "trace.h"
+#include "hostfxr_resolver_t.h"
+
+hostfxr_main_bundle_startupinfo_fn hostfxr_resolver_t::resolve_main_bundle_startupinfo()
+{
+    assert(m_hostfxr_dll != nullptr);
+    return reinterpret_cast<hostfxr_main_bundle_startupinfo_fn>(pal::get_symbol(m_hostfxr_dll, "hostfxr_main_bundle_startupinfo"));
+}
+
+hostfxr_set_error_writer_fn hostfxr_resolver_t::resolve_set_error_writer()
+{
+    assert(m_hostfxr_dll != nullptr);
+    return reinterpret_cast<hostfxr_set_error_writer_fn>(pal::get_symbol(m_hostfxr_dll, "hostfxr_set_error_writer"));
+}
+
+hostfxr_main_startupinfo_fn hostfxr_resolver_t::resolve_main_startupinfo()
+{
+    assert(m_hostfxr_dll != nullptr);
+    return reinterpret_cast<hostfxr_main_startupinfo_fn>(pal::get_symbol(m_hostfxr_dll, "hostfxr_main_startupinfo"));
+}
+
+hostfxr_main_fn hostfxr_resolver_t::resolve_main_v1()
+{
+    assert(m_hostfxr_dll != nullptr);
+    return reinterpret_cast<hostfxr_main_fn>(pal::get_symbol(m_hostfxr_dll, "hostfxr_main"));
+}
+
+hostfxr_resolver_t::hostfxr_resolver_t(const pal::string_t& app_root)
+{
+    if (!fxr_resolver::try_get_path(app_root, &m_dotnet_root, &m_fxr_path))
+    {
+        m_status_code = StatusCode::CoreHostLibMissingFailure;
+    }
+    else if (pal::load_library(&m_fxr_path, &m_hostfxr_dll))
+    {
+        m_status_code = StatusCode::Success;
+    }
+    else
+    {
+        trace::error(_X("The library %s was found, but loading it from %s failed"), LIBFXR_NAME, m_fxr_path.c_str());
+        trace::error(_X("  - Installing .NET prerequisites might help resolve this problem."));
+        trace::error(_X("     %s"), DOTNET_CORE_INSTALL_PREREQUISITES_URL);
+        m_status_code = StatusCode::CoreHostLibLoadFailure;
+    }
+}
+
+hostfxr_resolver_t::~hostfxr_resolver_t()
+{
+    if (m_hostfxr_dll != nullptr)
+    {
+        pal::unload_library(m_hostfxr_dll);
+    }
+}

src/installer/corehost/cli/apphost/static/CMakeLists.txt

@@ -0,0 +1,63 @@
+# Licensed to the .NET Foundation under one or more agreements.
+# The .NET Foundation licenses this file to you under the MIT license.
+# See the LICENSE file in the project root for more information.
+
+project(singlefilehost)
+set(DOTNET_PROJECT_NAME "singlefilehost")
+
+# Add RPATH to the apphost binary that allows using local copies of shared libraries
+# dotnet core depends on for special scenarios when system wide installation of such
+# dependencies is not possible for some reason.
+# This cannot be enabled for MacOS (Darwin) since its RPATH works in a different way,
+# doesn't apply to libraries loaded via dlopen and most importantly, it is not transitive.
+if (NOT CLR_CMAKE_TARGET_OSX)
+    set(CMAKE_BUILD_WITH_INSTALL_RPATH TRUE)
+    set(CMAKE_INSTALL_RPATH "\$ORIGIN/netcoredeps")
+endif()
+
+set(SKIP_VERSIONING 1)
+
+include_directories(..)
+include_directories(../../json)
+
+set(SOURCES
+    ../bundle_marker.cpp
+    ./hostfxr_resolver_t.cpp
+    ./hostpolicy_resolver.cpp
+)
+
+set(HEADERS
+    ../bundle_marker.h
+    ../../../hostfxr_resolver_t.h
+)
+
+if(CLR_CMAKE_TARGET_WIN32)
+    list(APPEND SOURCES
+        ../apphost.windows.cpp)
+
+    list(APPEND HEADERS
+        ../apphost.windows.h)
+endif()
+
+include(../../exe.cmake)
+
+add_definitions(-DFEATURE_APPHOST=1)
+add_definitions(-DFEATURE_STATIC_HOST=1)
+
+# Disable manifest generation into the file .exe on Windows
+if(CLR_CMAKE_TARGET_WIN32)
+    set_property(TARGET ${PROJECT_NAME} PROPERTY
+            LINK_FLAGS "/MANIFEST:NO"
+        )
+endif()
+
+# Specify non-default Windows libs to be used for Arm/Arm64 builds
+if (CLR_CMAKE_TARGET_WIN32 AND (CLR_CMAKE_TARGET_ARCH_ARM OR CLR_CMAKE_TARGET_ARCH_ARM64))
+    target_link_libraries(singlefilehost Advapi32.lib shell32.lib)
+endif()
+
+target_link_libraries(singlefilehost
+    libhostfxr_static
+    libhostpolicy_static
+    libhostcommon
+)

src/installer/corehost/cli/apphost/static/hostfxr_resolver_t.cpp

@@ -0,0 +1,63 @@
+// Licensed to the .NET Foundation under one or more agreements.
+// The .NET Foundation licenses this file to you under the MIT license.
+// See the LICENSE file in the project root for more information.
+
+#include <assert.h>
+#include "trace.h"
+#include "hostfxr.h"
+#include "hostfxr_resolver_t.h"
+
+extern "C"
+{
+    int HOSTFXR_CALLTYPE hostfxr_main_bundle_startupinfo(const int argc, const pal::char_t* argv[], const pal::char_t* host_path, const pal::char_t* dotnet_root, const pal::char_t* app_path, int64_t bundle_header_offset);
+    int HOSTFXR_CALLTYPE hostfxr_main_startupinfo(const int argc, const pal::char_t* argv[], const pal::char_t* host_path, const pal::char_t* dotnet_root, const pal::char_t* app_path);
+    int HOSTFXR_CALLTYPE hostfxr_main(const int argc, const pal::char_t* argv[]);
+    hostfxr_error_writer_fn HOSTFXR_CALLTYPE hostfxr_set_error_writer(hostfxr_error_writer_fn error_writer);
+}
+
+hostfxr_main_bundle_startupinfo_fn hostfxr_resolver_t::resolve_main_bundle_startupinfo()
+{
+    assert(m_hostfxr_dll == nullptr);
+    return hostfxr_main_bundle_startupinfo;
+}
+
+hostfxr_set_error_writer_fn hostfxr_resolver_t::resolve_set_error_writer()
+{
+    assert(m_hostfxr_dll == nullptr);
+    return hostfxr_set_error_writer;
+}
+
+hostfxr_main_startupinfo_fn hostfxr_resolver_t::resolve_main_startupinfo()
+{
+    assert(m_hostfxr_dll == nullptr);
+    return hostfxr_main_startupinfo;
+}
+
+hostfxr_main_fn hostfxr_resolver_t::resolve_main_v1()
+{
+    assert(m_hostfxr_dll == nullptr);
+    assert(!"This function should not be called in a static host");
+    return nullptr; 
+}
+
+hostfxr_resolver_t::hostfxr_resolver_t(const pal::string_t& app_root)
+{
+    if (app_root.length() == 0)
+    {
+        trace::info(_X("Application root path is empty. This shouldn't happen"));
+        m_status_code = StatusCode::CoreHostLibMissingFailure;
+    }
+    else
+    {
+        trace::info(_X("Using internal fxr"));
+
+        m_dotnet_root.assign(app_root);
+        m_fxr_path.assign(app_root);
+
+        m_status_code = StatusCode::Success;
+    }
+}
+
+hostfxr_resolver_t::~hostfxr_resolver_t()
+{
+}