added first version of custom PS hosting code
This commit is contained in:
Peter Honeder
parent
39e939ce0f
commit
b9784906f4
@ -7,16 +7,21 @@ set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11")
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include_directories(../ext-src/gtest/fused-src impl)
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link_directories(${monad_native_BINARY_DIR})
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# source file definitions
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set(LIB_SOURCE_FILES impl/getcurrentprocessorid.cpp impl/getusername.cpp impl/terminal.cpp)
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set(TEST_SOURCE_FILES tests/test-getcurrentprocessid.cpp)
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set(SOURCE_FILES main.cpp ../ext-src/gtest/fused-src/gtest/gtest-all.cc)
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SET(HOST_CMDLINE_SOURCE_FILES host/cmdline/main.cpp host/cmdline/coreclrutil.cpp)
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# target definitions
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add_library(ps SHARED ${LIB_SOURCE_FILES})
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add_executable(monad_native ${SOURCE_FILES} ${TEST_SOURCE_FILES})
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add_executable(host_cmdline ${HOST_CMDLINE_SOURCE_FILES})
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# add pthread and other libs
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find_package(Threads)
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target_link_libraries(monad_native ${CMAKE_THREAD_LIBS_INIT} ps)
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target_link_libraries(host_cmdline dl)
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163
host/cmdline/coreclrutil.cpp
Normal file
163
host/cmdline/coreclrutil.cpp
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@ -0,0 +1,163 @@
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#include "coreclrutil.h"
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#include <dirent.h>
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#include <assert.h>
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#include <string.h>
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#include <sys/stat.h>
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#include <set>
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namespace CoreCLRUtil
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{
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bool GetAbsolutePath(const char* path, std::string& absolutePath)
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{
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bool result = false;
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char realPath[PATH_MAX];
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if (realpath(path, realPath) != nullptr && realPath[0] != '\0')
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{
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absolutePath.assign(realPath);
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// realpath should return canonicalized path without the trailing slash
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assert(absolutePath.back() != '/');
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result = true;
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}
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return result;
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}
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bool GetDirectory(const char* absolutePath, std::string& directory)
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{
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directory.assign(absolutePath);
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size_t lastSlash = directory.rfind('/');
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if (lastSlash != std::string::npos)
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{
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directory.erase(lastSlash);
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return true;
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}
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return false;
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}
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bool GetClrFilesAbsolutePath(const char* currentExePath, const char* clrFilesPath, std::string& clrFilesAbsolutePath)
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{
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std::string clrFilesRelativePath;
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const char* clrFilesPathLocal = clrFilesPath;
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if (clrFilesPathLocal == nullptr)
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{
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// There was no CLR files path specified, use the folder of the corerun/coreconsole
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if (!GetDirectory(currentExePath, clrFilesRelativePath))
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{
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perror("Failed to get directory from argv[0]");
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return false;
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}
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clrFilesPathLocal = clrFilesRelativePath.c_str();
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// TODO: consider using an env variable (if defined) as a fall-back.
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// The windows version of the corerun uses core_root env variable
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}
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if (!GetAbsolutePath(clrFilesPathLocal, clrFilesAbsolutePath))
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{
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perror("Failed to convert CLR files path to absolute path");
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return false;
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}
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return true;
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}
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void AddFilesFromDirectoryToTpaList(const char* directory, std::string& tpaList)
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{
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const char * const tpaExtensions[] = {
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".ni.dll", // Probe for .ni.dll first so that it's preferred if ni and il coexist in the same dir
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".dll",
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".ni.exe",
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".exe",
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};
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DIR* dir = opendir(directory);
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if (dir == nullptr)
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{
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return;
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}
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std::set<std::string> addedAssemblies;
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// Walk the directory for each extension separately so that we first get files with .ni.dll extension,
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// then files with .dll extension, etc.
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for (int extIndex = 0; extIndex < sizeof(tpaExtensions) / sizeof(tpaExtensions[0]); extIndex++)
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{
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const char* ext = tpaExtensions[extIndex];
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int extLength = strlen(ext);
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struct dirent* entry;
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// For all entries in the directory
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while ((entry = readdir(dir)) != nullptr)
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{
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// We are interested in files only
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switch (entry->d_type)
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{
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case DT_REG:
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break;
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// Handle symlinks and file systems that do not support d_type
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case DT_LNK:
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case DT_UNKNOWN:
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{
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std::string fullFilename;
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fullFilename.append(directory);
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fullFilename.append("/");
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fullFilename.append(entry->d_name);
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struct stat sb;
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if (stat(fullFilename.c_str(), &sb) == -1)
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{
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continue;
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}
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if (!S_ISREG(sb.st_mode))
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{
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continue;
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}
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}
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break;
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default:
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continue;
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}
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std::string filename(entry->d_name);
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// Check if the extension matches the one we are looking for
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int extPos = filename.length() - extLength;
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if ((extPos <= 0) || (filename.compare(extPos, extLength, ext) != 0))
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{
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continue;
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}
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std::string filenameWithoutExt(filename.substr(0, extPos));
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// Make sure if we have an assembly with multiple extensions present,
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// we insert only one version of it.
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if (addedAssemblies.find(filenameWithoutExt) == addedAssemblies.end())
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{
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addedAssemblies.insert(filenameWithoutExt);
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tpaList.append(directory);
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tpaList.append("/");
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tpaList.append(filename);
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tpaList.append(":");
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}
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}
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// Rewind the directory stream to be able to iterate over it for the next extension
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rewinddir(dir);
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}
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closedir(dir);
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}
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} // namespace CoreCLRUtil
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63
host/cmdline/coreclrutil.h
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63
host/cmdline/coreclrutil.h
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@ -0,0 +1,63 @@
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#pragma once
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#include <string>
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namespace CoreCLRUtil
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{
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//
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// This code is mostly copied and modified from original CoreCLR project's
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// code on github: https://github.com/dotnet/coreclr
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//
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//
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// these function signatures are the entry point API for CoreCLR
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//
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// Prototype of the coreclr_initialize function from the libcoreclr.so
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typedef int (*InitializeCoreCLRFunction)(
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const char* exePath,
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const char* appDomainFriendlyName,
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int propertyCount,
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const char** propertyKeys,
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const char** propertyValues,
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void** hostHandle,
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unsigned int* domainId);
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// Prototype of the coreclr_shutdown function from the libcoreclr.so
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typedef int (*ShutdownCoreCLRFunction)(
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void* hostHandle,
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unsigned int domainId);
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// Prototype of the coreclr_execute_assembly function from the libcoreclr.so
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typedef int (*ExecuteAssemblyFunction)(
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void* hostHandle,
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unsigned int domainId,
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int argc,
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const char** argv,
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const char* managedAssemblyPath,
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unsigned int* exitCode);
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// Prototype of coreclr_create_delegate function from the libcoreclr.so
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typedef int (*CreateDelegateFunction)(
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void* hostHandle,
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unsigned int domainId,
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const char* entryPointAssemblyName,
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const char* entryPointTypeName,
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const char* entryPointMethodName,
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void** delegate);
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// The name of the CoreCLR native runtime DLL
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#if defined(__APPLE__)
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constexpr char coreClrDll[] = "libcoreclr.dylib";
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#else
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constexpr char coreClrDll[] = "libcoreclr.so";
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#endif
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bool GetAbsolutePath(const char* path, std::string& absolutePath);
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bool GetDirectory(const char* absolutePath, std::string& directory);
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bool GetClrFilesAbsolutePath(const char* currentExePath, const char* clrFilesPath, std::string& clrFilesAbsolutePath);
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void AddFilesFromDirectoryToTpaList(const char* directory, std::string& tpaList);
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} // namespace CoreCLRUtil
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194
host/cmdline/main.cpp
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194
host/cmdline/main.cpp
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#include <string>
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#include <iostream>
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#include "coreclrutil.h"
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#include <limits.h>
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#include <dlfcn.h>
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int main(int argc, char** argv)
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{
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// TODO: read from command line args
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std::string clrAbsolutePath = "/home/peter/gitwd/monad-linux/scripts/exec_env/app_base";
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// managed assembly arguments
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int managedAssemblyArgc = 0;
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const char* managedAssemblyArgv[] = { "" };
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// there are two assemblies involved in hosting PowerShell:
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// - Microsoft.PowerShell.CoreCLR.AssemblyLoadContext.dll
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// + this assembly has to be listed as platform assembly
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// - System.Management.Automation.dll
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std::string powershellBaseAbsolutePath = "/home/peter/gitwd/monad-linux/scripts/exec_env/app_base";
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std::string assemblyLoadContextAssemblyName = "Microsoft.PowerShell.CoreCLR.AssemblyLoadContext";
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std::string assemblyLoadContextAbsolutePath = powershellBaseAbsolutePath + "/" + assemblyLoadContextAssemblyName + ".dll";
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std::string systemManagementAutomationAssemblyName = "System.Management.Automation";
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std::string systemManagementAutomationAbsolutePath = powershellBaseAbsolutePath + "/" + systemManagementAutomationAssemblyName + ".dll";
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std::string coreClrDllPath = clrAbsolutePath + "/" + CoreCLRUtil::coreClrDll;
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if (coreClrDllPath.size() >= PATH_MAX)
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{
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std::cerr << "Absolute path to CoreCLR library too long" << std::endl;
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return 1;
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}
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std::cout << "coreClrDllPath: " << coreClrDllPath << std::endl;
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// TPA list
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//
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// The list of platform assemblies must include all CoreCLR assemblies
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// and the Microsoft.PowerShell.CoreCLR.AssemblyLoadContext
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//
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// TODO: move CLR assemblies to separate path during build&run make steps
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// TODO: only add assembly load context to TPA list, not any other PS dll
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std::string tpaList;
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CoreCLRUtil::AddFilesFromDirectoryToTpaList(clrAbsolutePath.c_str(),tpaList);
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std::cout << "tpaList: " << tpaList << std::endl;
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// assembly load paths
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//
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// All PowerShell assemblies are assumed to be in the same path
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std::string appPath;
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if (!CoreCLRUtil::GetDirectory(assemblyLoadContextAbsolutePath.c_str(),appPath))
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{
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std::cerr << "failed to get assembly search directory from assembly absolute path" << std::endl;
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return 1;
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}
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std::cout << "appPath: " << appPath << std::endl;
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// search paths for native dlls
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//
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// Add both the CoreCLR directory and the PowerShell directory to this list
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std::string nativeDllSearchDirs = appPath + ":" + clrAbsolutePath;
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// get the absolute path of the current executable
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std::string currentExeAbsolutePath;
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if (!CoreCLRUtil::GetAbsolutePath(argv[0],currentExeAbsolutePath))
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{
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std::cerr << "could not get absolute path of current executable" << std::endl;
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return 1;
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}
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// open the shared library
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void* coreclrLib = dlopen(coreClrDllPath.c_str(), RTLD_NOW|RTLD_LOCAL);
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if (coreclrLib == nullptr)
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{
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char* error = dlerror();
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std::cerr << "dlopen failed to open the CoreCLR library: " << error << std::endl;
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return 2;
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}
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// query the function pointers
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CoreCLRUtil::InitializeCoreCLRFunction initializeCoreCLR = (CoreCLRUtil::InitializeCoreCLRFunction)dlsym(coreclrLib,"coreclr_initialize");
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CoreCLRUtil::ExecuteAssemblyFunction executeAssembly = (CoreCLRUtil::ExecuteAssemblyFunction)dlsym(coreclrLib,"coreclr_execute_assembly");
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CoreCLRUtil::ShutdownCoreCLRFunction shutdownCoreCLR = (CoreCLRUtil::ShutdownCoreCLRFunction)dlsym(coreclrLib,"coreclr_shutdown");
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CoreCLRUtil::CreateDelegateFunction createDelegate = (CoreCLRUtil::CreateDelegateFunction)dlsym(coreclrLib,"coreclr_create_delegate");
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if (initializeCoreCLR == nullptr)
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{
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std::cerr << "function coreclr_initialize not found in CoreCLR library" << std::endl;
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return 3;
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}
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if (executeAssembly == nullptr)
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{
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std::cerr << "function coreclr_execute_assembly not found in CoreCLR library" << std::endl;
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return 3;
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}
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if (shutdownCoreCLR == nullptr)
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{
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std::cerr << "function coreclr_shutdown not found in CoreCLR library" << std::endl;
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return 3;
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}
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if (createDelegate == nullptr)
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{
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std::cerr << "function coreclr_create_delegate not found in CoreCLR library" << std::endl;
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return 3;
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}
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// create list of properties to initialize CoreCLR
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const char* propertyKeys[] = {
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"TRUSTED_PLATFORM_ASSEMBLIES",
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"APP_PATHS",
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"APP_NI_PATHS",
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"NATIVE_DLL_SEARCH_DIRECTORIES",
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"AppDomainCompatSwitch"
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};
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const char* propertyValues[] = {
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tpaList.c_str(),
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appPath.c_str(),
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appPath.c_str(),
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nativeDllSearchDirs.c_str(),
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"UseLatestBehaviorWhenTFMNotSpecified"
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};
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// initialize CoreCLR
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void* hostHandle;
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unsigned int domainId;
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int status = initializeCoreCLR(
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currentExeAbsolutePath.c_str(),
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"ps_cmdline_host",
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sizeof(propertyKeys)/sizeof(propertyKeys[0]),
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propertyKeys,
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propertyValues,
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&hostHandle,
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&domainId);
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if (0 > status)
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{
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std::cerr << "coreclr_initialize failed - status: " << std::hex << status << std::endl;
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return 4;
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}
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// initialize the PS's custom assembly load context
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typedef void (*LoaderRunHelperFp)(const char16_t* appPath);
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LoaderRunHelperFp loaderDelegate = nullptr;
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status = createDelegate(
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hostHandle,
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domainId,
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"Microsoft.PowerShell.CoreCLR.AssemblyLoadContext, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null",
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"System.Management.Automation.PowerShellAssemblyLoadContextInitializer",
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"SetPowerShellAssemblyLoadContext",
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(void**)&loaderDelegate);
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if (0 > status)
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{
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std::cerr << "could not create delegate for SetPowerShellAssemblyLoadContext - status: " << std::hex << status << std::endl;
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return 4;
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}
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loaderDelegate(u"/home/peter/gitwd/monad-linux/scripts/exec_env/app_base");
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typedef int (*TestDelegate)();
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TestDelegate testDelegate = nullptr;
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status = createDelegate(
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hostHandle,
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domainId,
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"System.Management.Automation, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null",
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"System.Management.Automation.Platform",
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"IsLinux",
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(void**)&testDelegate);
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int returnValue = testDelegate();
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std::cout << "returnValue=" << returnValue << std::endl;
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typedef void (*UnmanagedEntry)();
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UnmanagedEntry unmanagedEntry = nullptr;
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status = createDelegate(
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hostHandle,
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domainId,
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"powershell-simple, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null",
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"ps_hello_world.Program",
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"UnmanagedEntry",
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(void**)&unmanagedEntry);
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if (0 > status)
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{
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std::cerr << "could not create delegate for UnmanagedEntry - status: " << std::hex << status << std::endl;
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return 4;
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}
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unmanagedEntry();
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return 0;
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}
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