/* * Copyright (c) 2011-2016 Ryan Prichard * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to * deal in the Software without restriction, including without limitation the * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or * sell copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS * IN THE SOFTWARE. */ #ifndef WINPTY_H #define WINPTY_H #include #include "winpty_constants.h" /* On 32-bit Windows, winpty functions have the default __cdecl (not __stdcall) * calling convention. (64-bit Windows has only a single calling convention.) * When compiled with __declspec(dllexport), with either MinGW or MSVC, the * winpty functions are unadorned--no underscore prefix or '@nn' suffix--so * GetProcAddress can be used easily. */ #ifdef COMPILING_WINPTY_DLL #define WINPTY_API __declspec(dllexport) #else #define WINPTY_API __declspec(dllimport) #endif #ifdef __cplusplus extern "C" { #endif /* The winpty API uses wide characters, instead of UTF-8, to avoid conversion * complications related to surrogates. Windows generally tolerates unpaired * surrogates in text, which makes conversion to and from UTF-8 ambiguous and * complicated. (There are different UTF-8 variants that deal with UTF-16 * surrogates differently.) */ /***************************************************************************** * Error handling. */ /* All the APIs have an optional winpty_error_t output parameter. If a * non-NULL argument is specified, then either the API writes NULL to the * value (on success) or writes a newly allocated winpty_error_t object. The * object must be freed using winpty_error_free. */ /* An error object. */ typedef struct winpty_error_s winpty_error_t; typedef winpty_error_t *winpty_error_ptr_t; /* An error code -- one of WINPTY_ERROR_xxx. */ typedef DWORD winpty_result_t; /* Gets the error code from the error object. */ WINPTY_API winpty_result_t winpty_error_code(winpty_error_ptr_t err); /* Returns a textual representation of the error. The string is freed when * the error is freed. */ WINPTY_API LPCWSTR winpty_error_msg(winpty_error_ptr_t err); /* Free the error object. Every error returned from the winpty API must be * freed. */ WINPTY_API void winpty_error_free(winpty_error_ptr_t err); /***************************************************************************** * Configuration of a new agent. */ /* The winpty_config_t object is not thread-safe. */ typedef struct winpty_config_s winpty_config_t; /* Allocate a winpty_config_t value. Returns NULL on error. There are no * required settings -- the object may immediately be used. agentFlags is a * set of zero or more WINPTY_FLAG_xxx values. An unrecognized flag results * in an assertion failure. */ WINPTY_API winpty_config_t * winpty_config_new(UINT64 agentFlags, winpty_error_ptr_t *err /*OPTIONAL*/); /* Free the cfg object after passing it to winpty_open. */ WINPTY_API void winpty_config_free(winpty_config_t *cfg); WINPTY_API void winpty_config_set_initial_size(winpty_config_t *cfg, int cols, int rows); /* Set the mouse mode to one of the WINPTY_MOUSE_MODE_xxx constants. */ WINPTY_API void winpty_config_set_mouse_mode(winpty_config_t *cfg, int mouseMode); /* Amount of time to wait for the agent to startup and to wait for any given * agent RPC request. Must be greater than 0. Can be INFINITE. */ WINPTY_API void winpty_config_set_agent_timeout(winpty_config_t *cfg, DWORD timeoutMs); /***************************************************************************** * Start the agent. */ /* The winpty_t object is thread-safe. */ typedef struct winpty_s winpty_t; /* Starts the agent. Returns NULL on error. This process will connect to the * agent over a control pipe, and the agent will open data pipes (e.g. CONIN * and CONOUT). */ WINPTY_API winpty_t * winpty_open(const winpty_config_t *cfg, winpty_error_ptr_t *err /*OPTIONAL*/); /* A handle to the agent process. This value is valid for the lifetime of the * winpty_t object. Do not close it. */ WINPTY_API HANDLE winpty_agent_process(winpty_t *wp); /***************************************************************************** * I/O pipes. */ /* Returns the names of named pipes used for terminal I/O. Each input or * output direction uses a different half-duplex pipe. The agent creates * these pipes, and the client can connect to them using ordinary I/O methods. * The strings are freed when the winpty_t object is freed. * * winpty_conerr_name returns NULL unless WINPTY_FLAG_CONERR is specified. * * N.B.: CreateFile does not block when connecting to a local server pipe. If * the server pipe does not exist or is already connected, then it fails * instantly. */ WINPTY_API LPCWSTR winpty_conin_name(winpty_t *wp); WINPTY_API LPCWSTR winpty_conout_name(winpty_t *wp); WINPTY_API LPCWSTR winpty_conerr_name(winpty_t *wp); /***************************************************************************** * winpty agent RPC call: process creation. */ /* The winpty_spawn_config_t object is not thread-safe. */ typedef struct winpty_spawn_config_s winpty_spawn_config_t; /* winpty_spawn_config strings do not need to live as long as the config * object. They are copied. Returns NULL on error. spawnFlags is a set of * zero or more WINPTY_SPAWN_FLAG_xxx values. An unrecognized flag results in * an assertion failure. * * env is a a pointer to an environment block like that passed to * CreateProcess--a contiguous array of NUL-terminated "VAR=VAL" strings * followed by a final NUL terminator. * * N.B.: If you want to gather all of the child's output, you may want the * WINPTY_SPAWN_FLAG_AUTO_SHUTDOWN flag. */ WINPTY_API winpty_spawn_config_t * winpty_spawn_config_new(UINT64 spawnFlags, LPCWSTR appname /*OPTIONAL*/, LPCWSTR cmdline /*OPTIONAL*/, LPCWSTR cwd /*OPTIONAL*/, LPCWSTR env /*OPTIONAL*/, winpty_error_ptr_t *err /*OPTIONAL*/); /* Free the cfg object after passing it to winpty_spawn. */ WINPTY_API void winpty_spawn_config_free(winpty_spawn_config_t *cfg); /* * Spawns the new process. * * The function initializes all output parameters to zero or NULL. * * On success, the function returns TRUE. For each of process_handle and * thread_handle that is non-NULL, the HANDLE returned from CreateProcess is * duplicated from the agent and returned to the winpty client. The client is * responsible for closing these HANDLES. * * On failure, the function returns FALSE, and if err is non-NULL, then *err * is set to an error object. * * If the agent's CreateProcess call failed, then *create_process_error is set * to GetLastError(), and the WINPTY_ERROR_SPAWN_CREATE_PROCESS_FAILED error * is returned. * * winpty_spawn can only be called once per winpty_t object. If it is called * before the output data pipe(s) is/are connected, then collected output is * buffered until the pipes are connected, rather than being discarded. * * N.B.: GetProcessId works even if the process has exited. The PID is not * recycled until the NT process object is freed. * (https://blogs.msdn.microsoft.com/oldnewthing/20110107-00/?p=11803) */ WINPTY_API BOOL winpty_spawn(winpty_t *wp, const winpty_spawn_config_t *cfg, HANDLE *process_handle /*OPTIONAL*/, HANDLE *thread_handle /*OPTIONAL*/, DWORD *create_process_error /*OPTIONAL*/, winpty_error_ptr_t *err /*OPTIONAL*/); /***************************************************************************** * winpty agent RPC calls: everything else */ /* Change the size of the Windows console window. */ WINPTY_API BOOL winpty_set_size(winpty_t *wp, int cols, int rows, winpty_error_ptr_t *err /*OPTIONAL*/); /* Gets a list of processes attached to the console. */ WINPTY_API int winpty_get_console_process_list(winpty_t *wp, int *processList, const int processCount, winpty_error_ptr_t *err /*OPTIONAL*/); /* Frees the winpty_t object and the OS resources contained in it. This * call breaks the connection with the agent, which should then close its * console, terminating the processes attached to it. * * This function must not be called if any other threads are using the * winpty_t object. Undefined behavior results. */ WINPTY_API void winpty_free(winpty_t *wp); /****************************************************************************/ #ifdef __cplusplus } #endif #endif /* WINPTY_H */