Shell(posix) fixes.

include/boost/process/v2/detail/impl/process_handle_windows.ipp

@@ -77,14 +77,14 @@ static BOOL CALLBACK enum_window(HWND hwnd, LPARAM param)
     auto data = reinterpret_cast<enum_windows_data_t*>(param);
     DWORD pid{0u};
     GetWindowThreadProcessId(hwnd, &pid);
-
     if (pid != data->pid)
       return TRUE;
-
+    
     LRESULT res = ::SendMessageW(hwnd, WM_CLOSE, 0, 0);
-    if (!res)
+
+    if (res)
       data->ec = detail::get_last_error();
-    return res != 0;
+    return res == 0;
   }
 
 void request_exit_(pid_type pid_, error_code & ec)

include/boost/process/v2/detail/process_handle_windows.hpp

@@ -87,17 +87,16 @@ struct basic_process_handle_win
     {
     }
 
-    basic_process_handle_win(basic_process_handle_win && handle)
+    basic_process_handle_win(basic_process_handle_win && handle) 
+        :  pid_(handle.id()), handle_(std::move(handle.handle_))
     {
-        pid_ = handle.id();
-        handle_ = std::move(handle.handle_);
         handle.pid_ = static_cast<DWORD>(-1);
     }
 
     basic_process_handle_win& operator=(basic_process_handle_win && handle)
     {
         pid_ = handle.pid_;
-        handle_ = std::mopve(handle_))
+        handle_ = std::move(handle.handle_);
         handle.pid_ = static_cast<DWORD>(-1);
         return *this;
     }
@@ -166,7 +165,6 @@ struct basic_process_handle_win
     {
         if (!detail::check_pid_(pid_, ec))
             return;
-
         detail::request_exit_(pid_, ec);
     }
 

include/boost/process/v2/environment.hpp

@@ -979,7 +979,8 @@ struct key_value_pair
          const std::pair<Key, Value> & kv/*,
          typename std::enable_if<std::is_constructible<struct key,   Key >::value && 
                                  std::is_constructible<struct value, Value>::value
-                >::type = 0*/) : value_(((struct key)(kv.first)).string() + equality_sign + ((struct value)(kv.second)).string())
+                >::type = 0*/) : value_(((struct key)(kv.first)).basic_string<char_type, traits_type>() + equality_sign 
+                                      + ((struct value)(kv.second)).basic_string<char_type, traits_type>())
     {}
 
     key_value_pair(const typename conditional<is_same<value_type, char>::value, wchar_t, char>::type  * raw)
@@ -1045,6 +1046,7 @@ struct key_value_pair
 
     operator string_type() const {return native();}
     operator string_view_type() const {return native_view();}
+    operator typename string_view_type::string_view_type() const {return native_view();}
     operator key_value_pair_view() const {return native_view();}
 
     int compare( const key_value_pair& p ) const noexcept 
@@ -1432,8 +1434,9 @@ auto find_key(Environment & env, key_view ky)
 template<typename Environment = current_view>
 inline filesystem::path home(Environment && env = current())
 {
-#if defined(ASIO_WINDOWS)
-  return detail::find_key(env, L"HOMEDRIVE") + detail::find_key(env, L"HOMEPATH").native_string();
+#if defined(BOOST_PROCESS_V2_WINDOWS)
+  return detail::find_key(env, L"HOMEDRIVE").native_string() 
+       + detail::find_key(env, L"HOMEPATH").native_string();
 #else
   return detail::find_key(env, "HOME").native_string();
 #endif
@@ -1468,7 +1471,7 @@ inline BOOST_PROCESS_V2_NAMESPACE::filesystem::path find_executable(
         // first check if it has the extension already
         BOOST_PROCESS_V2_NAMESPACE::filesystem::path full_nm(name);
         BOOST_PROCESS_V2_NAMESPACE::filesystem::path pp(pp_view.begin(), pp_view.end());
-        auto p = pp / nm;
+        auto p = pp / full_nm;
         error_code ec;
 
         if (detail::is_executable(p, ec) && !ec)
@@ -1695,67 +1698,52 @@ struct process_environment
 
 
   template<typename Args>
-  void build_env(Args && args, string_view rs)
+  static
+  std::vector<wchar_t> build_env(Args && args,
+                                      typename std::enable_if<
+                                              std::is_convertible<
+                                                      decltype(*std::begin(std::declval<Args>())),
+                                                      wcstring_ref>::value>::type * = nullptr)
   {
-    std::size_t length = 0u;
-    for (string_view v : args)
-      length += detail::size_as_wide(v.data(), v.size(), ec) + 1u;
+    std::vector<wchar_t> res;
+    std::size_t sz = 1;
+    for (wcstring_ref cs : std::forward<Args>(args))
+        sz =+ cs.size() + 1;
+    res.reserve(sz);
+    
+    for (wcstring_ref cs : std::forward<Args>(args))
+        res.insert(res.end(), cs.begin(), std::next(cs.end()));
+        
 
-    if (ec)
-        return;
-    length ++ ;
-
-    unicode_env.resize(length);
-
-    auto itr = &unicode_env.front();
-    for (string_view v : args)
-    {
-        itr += detail::convert_to_wide(
-                        v.data(), v.size(), 
-                        itr, &unicode_env.back() - itr, 
-                        ec);
-      if (ec)
-        break;
-      *(itr++) = '\0';
-    }
-    unicode_env.back() = '\0';
-  }
-  template<typename Args>
-  void build_env(Args && args, wstring_view rs)
-  {
-    std::size_t length = 0u;
-    for (const auto & v : std::forward<Args>(args))
-      length += v.size() + 1u;
- 
-    length ++ ;
-
-    unicode_env.resize(length);
-
-    auto itr = unicode_env.begin();
-    for (wstring_view v : args )
-    {
-      itr = std::copy(v.begin(), v.end(), itr);
-      *(itr++) = L'\0';
-    }
-    unicode_env.back() = L'\0';
+    res.push_back(L'\0');
+    return res;
   }
 
+  template<typename Args>
+  std::vector<wchar_t> build_env(Args && args,
+                                      typename std::enable_if<
+                                              !std::is_convertible<
+                                                      decltype(*std::begin(std::declval<Args>())),
+                                                      wcstring_ref>::value>::type * = nullptr)
+  {
+    for (auto && arg: std::forward<Args>(args))
+      env_buffer.emplace_back(arg);
+    return build_env(env_buffer);
+  }
 
-  process_environment(std::initializer_list<string_view> sv)  { build_env(sv,  ""); }
-  process_environment(std::initializer_list<wstring_view> sv) { build_env(sv, L""); }
+  process_environment(std::initializer_list<string_view> sv)  : unicode_env{build_env(sv,  "")} {}
+  process_environment(std::initializer_list<wstring_view> sv) : unicode_env{build_env(sv, L"")} {}
 
   template<typename Args>
-  process_environment(Args && args)
+  process_environment(Args && args) : unicode_env{build_env(std::forward<Args>(args))}
   {
-    if (std::begin(args) != std::end(args))
-      build_env(std::forward<Args>(args), *std::begin(args));
   }
 
   error_code error() {return ec;}
   error_code ec;
+  std::vector<environment::key_value_pair> env_buffer;
   std::vector<wchar_t> unicode_env;
 
-
   error_code on_setup(windows::default_launcher & launcher,
                       const filesystem::path &, const std::wstring &);
 

include/boost/process/v2/impl/shell.ipp

@@ -0,0 +1,131 @@
+// Copyright (c) 2022 Klemens D. Morgenstern
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+#ifndef BOOST_PROCESS_V2_IMPL_SHELL_IPP
+#define BOOST_PROCESS_V2_IMPL_SHELL_IPP
+
+#include <boost/process/v2/detail/config.hpp>
+#include <boost/process/v2/detail/last_error.hpp>
+#include <boost/process/v2/detail/throw_error.hpp>
+#include <boost/process/v2/detail/config.hpp>
+#include <boost/process/v2/error.hpp>
+#include <boost/process/v2/shell.hpp>
+
+#if defined(BOOST_PROCESS_V2_WINDOWS)
+#include <shellapi.h>
+#else
+#include <wordexp.h>
+#endif
+
+BOOST_PROCESS_V2_BEGIN_NAMESPACE
+
+#if defined(BOOST_PROCESS_V2_WINDOWS)
+BOOST_PROCESS_V2_DECL const error_category& get_shell_category()
+{
+    return system_category();
+}
+#else
+
+struct shell_category_t final : public error_category
+{
+    shell_category_t() : error_category(0xDAF1u) {}
+
+    const char* name() const noexcept
+    {
+        return "process.v2.utf8";
+    }
+    std::string message(int value) const
+    {
+        switch (value)
+        {
+        case WRDE_BADCHAR:
+            return "Illegal occurrence of newline or one of |, &, ;, <, >, (, ), {, }.";
+        case WRDE_BADVAL:
+            return "An undefined shell variable was referenced, and the WRDE_UNDEF flag told us to consider this an error.";
+        case WRDE_CMDSUB:
+            return "Command substitution occurred, and the WRDE_NOCMD flag told us to consider this an error.";
+        case WRDE_NOSPACE:
+            return "Out of memory.";
+        case WRDE_SYNTAX:
+            return "Shell syntax error, such as unbalanced parentheses or unmatched quotes.";
+        default:
+            return "process.v2.wordexp error";
+        }
+    }
+};
+
+BOOST_PROCESS_V2_DECL const error_category& get_shell_category()
+{
+    static shell_category_t instance;
+    return instance;
+}
+
+#endif
+
+#if defined (BOOST_PROCESS_V2_WINDOWS)
+
+void shell::parse_()
+{
+    argv_ = ::CommandLineToArgvW(input_.c_str(), &argc_);
+    if (argv_ == nullptr)
+        detail::throw_last_error();
+}
+
+shell::~shell()
+{
+    if (argv_ != nullptr)
+        LocalFree(argv_);
+}
+
+auto shell::args() const-> args_type
+{
+    return input_.c_str();
+}
+
+#else
+
+void shell::parse_()
+{
+    wordexp_t we{};
+    auto cd = wordexp(input_.c_str(), &we, WRDE_NOCMD);
+
+    if (cd != 0)
+        detail::throw_error(error_code(cd, get_shell_category()), "shell::parse");
+    else
+    {
+        argc_ = static_cast<int>(we.we_wordc);
+        argv_ = we.we_wordv;
+        reserved_ = static_cast<int>(we.we_offs); 
+    }
+}
+
+shell::~shell()
+{
+    if (argv_ != nullptr)
+    {
+        wordexp_t we{
+            .we_wordc = static_cast<std::size_t>(argc_),
+            .we_wordv = argv_,
+            .we_offs = static_cast<std::size_t>(reserved_)
+        };
+        wordfree(&we);
+    }
+}
+
+auto shell::args() const -> args_type
+{
+    if (argc() == 0)
+    {
+        static const char * helper = nullptr;
+        return &helper;
+    }
+    else
+        return const_cast<const char**>(argv());
+}
+
+#endif
+
+BOOST_PROCESS_V2_END_NAMESPACE
+
+#endif //BOOST_PROCESS_V2_IMPL_SHELL_IPP

include/boost/process/v2/posix/default_launcher.hpp

@@ -485,6 +485,11 @@ struct default_launcher
         return argv_.data();
     }
 
+    const char * const * build_argv_(const filesystem::path &, const char ** argv)
+    {
+        return argv;
+    }
+
     template<typename Args>
     const char * const *  build_argv_(const filesystem::path & pt, const Args & args,
                                       typename std::enable_if<

include/boost/process/v2/process.hpp

@@ -19,9 +19,11 @@
 
 #if defined(BOOST_PROCESS_V2_STANDALONE)
 #include <asio/any_io_executor.hpp>
+#include <asio/post.hpp>
 #include <utility>
 #else
 #include <boost/asio/any_io_executor.hpp>
+#include <boost/asio/post.hpp>
 #include <boost/core/exchange.hpp>
 #endif
 
@@ -164,7 +166,7 @@ struct basic_process
                          typename std::enable_if<
                             std::is_convertible<ExecutionContext&, 
                                 BOOST_PROCESS_V2_ASIO_NAMESPACE::execution_context&>::value, void *>::type = nullptr)
-      : process_handle_(context, pid, native_handle) {}
+      : process_handle_(context.get_executor(), pid, native_handle) {}
 
   /// Create an invalid handle
   template <typename ExecutionContext>
@@ -172,7 +174,7 @@ struct basic_process
                          typename std::enable_if<
                              is_convertible<ExecutionContext&, 
                                 BOOST_PROCESS_V2_ASIO_NAMESPACE::execution_context&>::value, void *>::type = nullptr)
-     : process_handle_(context) {}
+     : process_handle_(context.get_executor()) {}
 
 
 
@@ -339,7 +341,7 @@ private:
         };
 
         BOOST_PROCESS_V2_ASIO_NAMESPACE::post(handle.get_executor(),
-                                              completer{res, std::move(self)});
+                                              completer{static_cast<int>(res), std::move(self)});
       }
       else
         handle.async_wait(std::move(self));

include/boost/process/v2/shell.hpp

@@ -0,0 +1,139 @@
+// Copyright (c) 2022 Klemens D. Morgenstern
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+#ifndef BOOST_PROCESS_V2_SHELL_HPP
+#define BOOST_PROCESS_V2_SHELL_HPP
+
+#include <boost/core/exchange.hpp>
+#include <boost/process/v2/cstring_ref.hpp>
+#include <boost/process/v2/detail/config.hpp>
+#include <boost/process/v2/detail/utf8.hpp>
+#include <boost/process/v2/detail/throw_error.hpp>
+#include <boost/process/v2/environment.hpp>
+#include <memory>
+#include <string>
+
+BOOST_PROCESS_V2_BEGIN_NAMESPACE
+
+/// Error category used by the shell parser.
+extern BOOST_PROCESS_V2_DECL const error_category& get_shell_category();
+static const error_category& shell_category = get_shell_category();
+
+/// Utility to parse commands 
+/** This utility class parses command lines into tokens
+ * and allows users to executed based on textual inputs.
+ * 
+ * In v1, this was possible directly when starting a process,
+ * but has been removed based on the security risks associated with this.
+ * 
+ * By making the shell parsing explicity, it is encouraged
+ * that a user runs a sanity check on the executable before launching it.
+ * 
+ * @par Example
+ * @code {.cpp}
+ * asio::io_context ctx;
+ * 
+ * auto cmd = shell("my-app --help");
+ * auto exe = cmd.exe();
+ * check_if_malicious(exe);
+ * 
+ * process proc{ctx, exe, cmd.args()};
+ * 
+ * @endcode
+ * 
+ * 
+ */
+struct shell
+{    
+#if defined(BOOST_PROCESS_V2_WINDOWS)
+    using char_type = wchar_t; 
+    using args_type = const wchar_t *;
+#else
+    using char_type = char;
+    using args_type = const char **;
+#endif
+
+    shell() = default;
+
+    template<typename Char, typename Traits>
+    shell(basic_string_view<Char, Traits> input) 
+        : buffer_(detail::conv_string<char_type>(input.data(), input.size())) 
+    {
+        parse_();
+    }
+
+    shell(basic_cstring_ref<char_type> input) : input_(input) {parse_();}
+    shell(basic_string_view<
+                    typename std::conditional<
+                        std::is_same<char_type, char>::value,
+                        wchar_t, char>::type> input) : buffer_(detail::conv_string<char_type>(input.data(), input.size())) 
+    {
+        parse_();
+    }
+
+    shell(const shell &) = delete;
+    shell& operator=(const shell &) = delete;
+
+    shell(shell && lhs) noexcept 
+        : buffer_(std::move(lhs.buffer_)),
+          input_(std::move(lhs.input_)),
+          argc_(boost::exchange(lhs.argc_, 0)),
+          argv_(boost::exchange(lhs.argv_, nullptr)),
+          reserved_(boost::exchange(lhs.reserved_, 0))  
+    {
+    }
+    shell& operator=(shell && lhs) noexcept
+    {
+        shell tmp(std::move(*this));
+        buffer_ = std::move(lhs.buffer_);
+        input_ = std::move(lhs.input_);
+        argc_  = boost::exchange(lhs.argc_, 0);
+        argv_ = boost::exchange(lhs.argv_, nullptr);
+        reserved_ = boost::exchange(lhs.reserved_, 0);
+        return *this;
+    }
+
+    // the length of the parsed shell, including the executable
+    int argc() const { return argc_; }
+    char_type** argv() const { return argv_; }
+        
+    char_type** begin() const {return argv();}
+    char_type** end()   const {return argv() + argc();}
+
+    bool empty() const {return argc() == 0;}
+    std::size_t size() const {return static_cast<std::size_t>(argc()); }
+    /// Native representation of the arguments to be used - excluding the executable
+    BOOST_PROCESS_V2_DECL args_type args() const;
+    template<typename Environment = environment::current_view>
+    filesystem::path exe(Environment && env = environment::current()) const
+    {
+        if (argc() == 0)
+            return "";
+        else
+            return environment::find_executable(0[argv()], std::forward<Environment>(env)); 
+    }
+    BOOST_PROCESS_V2_DECL ~shell();
+
+  private:
+    BOOST_PROCESS_V2_DECL void parse_();
+    
+    // storage in case we need a conversion
+    std::basic_string<char_type> buffer_;
+    basic_cstring_ref<char_type> input_{buffer_}; 
+    // impl details
+    int argc_ = 0;
+    char_type  ** argv_ = nullptr;
+    int reserved_ = 0;
+    
+};
+
+BOOST_PROCESS_V2_END_NAMESPACE
+
+#if defined(BOOST_PROCESS_V2_HEADER_ONLY)
+
+#include <boost/process/v2/impl/shell.ipp>
+
+#endif
+
+#endif //BOOST_PROCESS_V2_ERROR_HPP

include/boost/process/v2/src.hpp

@@ -22,5 +22,6 @@
 #include <boost/process/v2/impl/default_launcher.ipp>
 #include <boost/process/v2/impl/environment.ipp>
 #include <boost/process/v2/impl/process_handle.ipp>
+#include <boost/process/v2/impl/shell.ipp>
 
 #endif //BOOST_PROCESS_V2_SRC_HPP

include/boost/process/v2/stdio.hpp

@@ -12,7 +12,7 @@
 
 #include <boost/process/v2/detail/config.hpp>
 #include <boost/process/v2/default_launcher.hpp>
-
+#include <cstddef>
 #if defined(BOOST_PROCESS_V2_STANDALONE)
 #include <asio/connect_pipe.hpp>
 #else
@@ -52,7 +52,7 @@ struct handle_closer
   DWORD flags{0xFFFFFFFFu};
 };
 
-template<DWORD Io>
+template<DWORD Target>
 struct process_io_binding
 {
   HANDLE prepare()
@@ -62,7 +62,7 @@ struct process_io_binding
     return hh;
   }
 
-  std::unique_ptr<void, handle_closer> h{::GetStdHandle(Io), false};
+  std::unique_ptr<void, handle_closer> h{::GetStdHandle(Target), false};
 
   static DWORD get_flags(HANDLE h)
   {
@@ -82,10 +82,11 @@ struct process_io_binding
   process_io_binding(FILE * f) : process_io_binding(_get_osfhandle(_fileno(f))) {}
   process_io_binding(HANDLE h) : h{h, get_flags(h)} {}
   process_io_binding(std::nullptr_t) : process_io_binding(filesystem::path("NUL")) {}
-  process_io_binding(const filesystem::path & pth)
+  template<typename T, typename = typename std::enable_if<std::is_same<T, filesystem::path>::value>::type>
+  process_io_binding(const T & pth)
     : h(::CreateFileW(
         pth.c_str(),
-        Io == STD_INPUT_HANDLE ? GENERIC_READ : GENERIC_WRITE,
+        Target == STD_INPUT_HANDLE ? GENERIC_READ : GENERIC_WRITE,
         FILE_SHARE_READ | FILE_SHARE_WRITE,
         nullptr,
         OPEN_ALWAYS,
@@ -101,11 +102,13 @@ struct process_io_binding
                      typename std::enable_if<Target != STD_INPUT_HANDLE, Executor*>::type = 0)
   {
     BOOST_PROCESS_V2_ASIO_NAMESPACE::detail::native_pipe_handle p[2];
+    error_code ec;
     BOOST_PROCESS_V2_ASIO_NAMESPACE::detail::create_pipe(p, ec);
     if (ec)
-      return ;
+      detail::throw_error(ec, "create_pipe");
+      
     h = std::unique_ptr<void, handle_closer>{p[1], true};
-    readable_pipe.assign(p[0], ec);
+    readable_pipe.assign(p[0]);
   }
 
 
@@ -114,11 +117,13 @@ struct process_io_binding
                      typename std::enable_if<Target == STD_INPUT_HANDLE, Executor*>::type = 0)
   {
     BOOST_PROCESS_V2_ASIO_NAMESPACE::detail::native_pipe_handle p[2];
+    error_code ec;
     BOOST_PROCESS_V2_ASIO_NAMESPACE::detail::create_pipe(p, ec);
     if (ec)
-      return ;
+      detail::throw_error(ec, "create_pipe");
+
     h = std::unique_ptr<void, handle_closer>{p[0], true};
-    writable_pipe.assign(p[1], ec);
+    writable_pipe.assign(p[1]);
   }
 };
 

include/boost/process/v2/windows/default_launcher.hpp

@@ -398,6 +398,11 @@ struct default_launcher
     return build_command_line_impl(pt, args, *std::begin(args));
   }
 
+  static std::wstring build_command_line(const filesystem::path & pt, const wchar_t * args)
+  {
+    return args;
+  }
+
 };
 
 

test/v2/CMakeLists.txt

@@ -15,6 +15,7 @@ boost_process_v2_standalone_test(utf8)
 boost_process_v2_standalone_test(cstring_ref)
 boost_process_v2_standalone_test(pid)
 boost_process_v2_standalone_test(environment)
+boost_process_v2_standalone_test(shell)
 
 add_library(boost_process_v2_header_test header_1.cpp header_2.cpp)
 target_link_libraries(boost_process_v2_header_test PUBLIC Boost::process)

test/v2/Jamfile.jam

@@ -53,6 +53,7 @@ test-suite standalone :
     [ run cstring_ref.cpp test_impl ]
     [ run environment.cpp test_impl ]
     [ run pid.cpp test_impl ]
+    [ run shell.cpp test_impl ]
     ;
 
 test-suite with_target :

test/v2/environment.cpp

@@ -95,9 +95,9 @@ BOOST_AUTO_TEST_CASE(environment)
 #else
     std::unordered_map<std::wstring, std::wstring> custom_env = 
         {
-            L"HOME", L"/home/byzantium",
-            L"HOMEDRIVE", L"X:",
-            L"HOMEPATH", L"\\users\\theodora"
+            {L"HOME", L"/home/byzantium"},
+            {L"HOMEDRIVE", L"X:"},
+            {L"HOMEPATH", L"\\users\\theodora"}
         };
 
     std::vector<std::wstring> custom_env2 = 
@@ -106,8 +106,8 @@ BOOST_AUTO_TEST_CASE(environment)
             {L"HOMEDRIVE=X:"},
             {L"HOMEPATH=\\users\\theodora"}
         };
-    BOOST_CHECK_EQUAL(bpe::home(custom_env), L"X:\\Users\\theodora");
-    BOOST_CHECK_EQUAL(bpe::home(custom_env2), L"X:\\Users\\theodora");
+    BOOST_CHECK_EQUAL(bpe::home(custom_env), "X:\\users\\theodora");
+    BOOST_CHECK_EQUAL(bpe::home(custom_env2), "X:\\users\\theodora");
 
 #endif
 

test/v2/process.cpp

@@ -164,6 +164,7 @@ BOOST_AUTO_TEST_CASE(request_exit)
     , asio::windows::show_window_minimized_not_active
 #endif
     );
+  BOOST_CHECK(proc.running());
   std::this_thread::sleep_for(std::chrono::milliseconds(250));
   proc.request_exit();
   proc.wait();
@@ -188,6 +189,8 @@ void trim_end(std::string & str)
 {
     auto itr = std::find_if(str.rbegin(), str.rend(), &std::char_traits<char>::not_eof);
     str.erase(itr.base(), str.end());
+    if (!str.empty() && str.back() == '\r')
+      str.pop_back();
 }
 
 BOOST_AUTO_TEST_CASE(print_args_out)
@@ -356,16 +359,16 @@ BOOST_AUTO_TEST_CASE(popen)
     // default CWD
     bpv::popen proc(ctx, pth, {"echo"});
 
-    asio::write(proc, asio::buffer("FOOBAR"));
-
+    auto written = asio::write(proc, asio::buffer("FOOBAR"));
     proc.get_stdin().close();
 
     std::string res;
     boost::system::error_code ec;
     std::size_t n = asio::read(proc, asio::dynamic_buffer(res), ec);
-    res.resize(n - 1);
-    BOOST_CHECK_EQUAL(ec, asio::error::eof);
+    BOOST_CHECK(ec == asio::error::eof || ec == asio::error::broken_pipe);
+    BOOST_REQUIRE_GE(n, 1);
     // remove EOF
+    res.pop_back();
     BOOST_CHECK_EQUAL(res, "FOOBAR");
 
     proc.wait();
@@ -429,7 +432,7 @@ std::string read_env(const char * name, Inits && ... inits)
   BOOST_CHECK_MESSAGE((ec == asio::error::broken_pipe) || (ec == asio::error::eof), ec.message());
   out.resize(sz);
   trim_end(out);
-  printf("Read env (%ld) %s: '%s'\n", sz, name, out.c_str());
+  printf("Read env (%ld) %s: '%s'\n", static_cast<long>(sz), name, out.c_str());
 
   proc.wait();
   BOOST_CHECK_EQUAL(proc.exit_code(), 0);
@@ -449,12 +452,12 @@ BOOST_AUTO_TEST_CASE(environment)
   BOOST_CHECK_EQUAL("FOO-BAR", read_env("FOOBAR", bpv::process_environment{sub_env}));
   
   sub_env.push_back("XYZ=ZYX");
-  auto itr = std::find_if(sub_env.begin(), sub_env.end(), [](const bpv::environment::key_value_pair & kv) {return kv.key() == "PATH";});
+  auto itr = std::find_if(sub_env.begin(), sub_env.end(), [](const bpv::environment::key_value_pair & kv) {return kv.key() == bpv::environment::key("PATH");});
   path += static_cast<char>(bpv::environment::delimiter);
   path += "/bar/foo";
   bpv::environment::value pval = itr->value();
   pval.push_back("/bar/foo");
-  *itr = bpv::environment::key_value_pair("PATH", pval);
+  *itr = bpv::environment::key_value_pair(bpv::environment::key("PATH"), pval);
   BOOST_CHECK_EQUAL(path, read_env("PATH", bpv::process_environment{sub_env}));
 
 #if defined(BOOST_PROCESS_V2_WINDOWS)
@@ -462,12 +465,13 @@ BOOST_AUTO_TEST_CASE(environment)
   BOOST_CHECK_EQUAL("FOO-BAR", read_env("FOOBAR", bpv::process_environment{L"FOOBAR=FOO-BAR", wpath.c_str()}));
   wpath += bpv::environment::delimiter;
   wpath += L"C:\\bar\\foo";
-  BOOST_CHECK_EQUAL(wpath.substr(5), read_env("pATH",   bpv::process_environment{wpath.c_str(), std::wstring(L"XYZ=ZYX")}));
+  BOOST_CHECK_EQUAL(
+    bpv::detail::conv_string<char>(wpath.c_str() + 5, wpath.size() - 5)
+    , read_env("pATH",   bpv::process_environment{wpath.c_str(), std::wstring(L"XYZ=ZYX")}));
 #endif
 
   BOOST_CHECK_EQUAL(read_env("PATH", bpv::process_environment(bpv::environment::current())), ::getenv("PATH"));
 }
 
-
 BOOST_AUTO_TEST_SUITE_END();
 

test/v2/shell.cpp

@@ -0,0 +1,56 @@
+// Copyright (c) 2022 Klemens D. Morgenstern
+//
+// Distributed under the Boost Software License, Version 1.0. (See accompanying
+// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
+
+// Disable autolinking for unit tests.
+#if !defined(BOOST_ALL_NO_LIB)
+#define BOOST_ALL_NO_LIB 1
+#endif // !defined(BOOST_ALL_NO_LIB)
+
+// Test that header file is self-contained.
+#include <boost/process/v2/shell.hpp>
+#include <boost/process/v2/process.hpp>
+#include <boost/asio/io_context.hpp>
+
+#include <boost/test/unit_test.hpp>
+
+#if defined(BOOST_PROCESS_V2_WINDOWS)
+    #define STR(Value) L##Value
+    #define STR_VIEW(Value) boost::process::v2::wcstring_ref(STR(Value))
+#else
+    #define STR(Value) Value
+    #define STR_VIEW(Value) boost::process::v2::cstring_ref(STR(Value))
+#endif
+
+
+BOOST_AUTO_TEST_CASE(test_shell_parser)
+{
+    using boost::process::v2::shell;
+    namespace bpv = boost::process::v2;
+#if defined(BOOST_PROCESS_V2_POSIX)
+    BOOST_CHECK_THROW(shell("foo \""), bpv::system_error);
+#endif
+
+    auto sh = shell(STR("foo bar \"foo bar\""));   
+    BOOST_CHECK(sh.argc() == 3u);
+    BOOST_CHECK(sh.argv()[0] == STR_VIEW("foo"));
+    BOOST_CHECK(sh.argv()[1] == STR_VIEW("bar"));
+    BOOST_CHECK(sh.argv()[2] == STR_VIEW("foo bar"));
+
+#if defined(BOOST_PROCESS_V2_POSIX)
+    auto raw_shell = "sh -c false";
+#else
+    auto raw_shell = "cmd /c exit 1";
+#endif
+    sh = shell(raw_shell);
+
+    auto exe = sh.exe();
+    BOOST_CHECK(bpv::filesystem::exists(exe));
+
+    boost::asio::io_context ctx;
+    bpv::process proc{ctx, exe, sh.args()};
+
+    proc.wait();
+    BOOST_CHECK_EQUAL(proc.exit_code(), 1);
+}

test/v2/windows.cpp

@@ -60,7 +60,7 @@ BOOST_AUTO_TEST_CASE(creation_flags)
     BOOST_CHECK_EQUAL(proc.wait() & ~EXTENDED_STARTUPINFO_PRESENT, 0);
 
     proc = bpv::process{ctx, master_test_suite().argv[1], {"creation-flags"}, bpv::windows::process_creation_flags<STARTF_TITLEISAPPID>()};
-    BOOST_CHECK(proc);
+    BOOST_CHECK(proc.running());
     BOOST_CHECK_EQUAL(proc.wait() & ~EXTENDED_STARTUPINFO_PRESENT, STARTF_TITLEISAPPID);
 }