From 025c439e829e0db9ac511cd9c1b8d5fd53475ead Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 15 Apr 2024 15:14:46 +0200 Subject: Adding upstream version 1.9.15p5. Signed-off-by: Daniel Baumann --- plugins/python/python_plugin_io.c | 276 ++++++++++++++++++++++++++++++++++++++ 1 file changed, 276 insertions(+) create mode 100644 plugins/python/python_plugin_io.c (limited to 'plugins/python/python_plugin_io.c') diff --git a/plugins/python/python_plugin_io.c b/plugins/python/python_plugin_io.c new file mode 100644 index 0000000..d554cb5 --- /dev/null +++ b/plugins/python/python_plugin_io.c @@ -0,0 +1,276 @@ +/* + * SPDX-License-Identifier: ISC + * + * Copyright (c) 2019-2020 Robert Manner + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +/* + * This is an open source non-commercial project. Dear PVS-Studio, please check it. + * PVS-Studio Static Code Analyzer for C, C++ and C#: http://www.viva64.com + */ + +#include "python_plugin_common.h" + +struct IOPluginContext +{ + struct PluginContext base_ctx; + struct io_plugin *io_plugin; +}; + +#define BASE_CTX(io_ctx) (&(io_ctx->base_ctx)) + +#define PY_IO_PLUGIN_VERSION SUDO_API_MKVERSION(1, 0) + +#define CALLBACK_PLUGINFUNC(func_name) io_ctx->io_plugin->func_name + +// This also verifies compile time that the name matches the sudo plugin API. +#define CALLBACK_PYNAME(func_name) ((void)CALLBACK_PLUGINFUNC(func_name), #func_name) + +#define MARK_CALLBACK_OPTIONAL(function_name) \ + do { \ + python_plugin_mark_callback_optional(plugin_ctx, CALLBACK_PYNAME(function_name), \ + (void **)&CALLBACK_PLUGINFUNC(function_name)); \ + } while(0) + +sudo_dso_public struct io_plugin *python_io_clone(void); + +static int +_call_plugin_open(struct IOPluginContext *io_ctx, int argc, char * const argv[], char * const command_info[]) +{ + debug_decl(_call_plugin_open, PYTHON_DEBUG_CALLBACKS); + struct PluginContext *plugin_ctx = BASE_CTX(io_ctx); + plugin_ctx->call_close = 1; + + if (!PyObject_HasAttrString(plugin_ctx->py_instance, CALLBACK_PYNAME(open))) { + debug_return_int(SUDO_RC_OK); + } + + int rc = SUDO_RC_ERROR; + PyObject *py_argv = py_str_array_to_tuple_with_count(argc, argv); + PyObject *py_command_info = py_str_array_to_tuple(command_info); + + if (py_argv != NULL && py_command_info != NULL) { + rc = python_plugin_api_rc_call(plugin_ctx, CALLBACK_PYNAME(open), + Py_BuildValue("(OO)", py_argv, py_command_info)); + } + + if (rc != SUDO_RC_OK) + plugin_ctx->call_close = 0; + + Py_XDECREF(py_argv); + Py_XDECREF(py_command_info); + debug_return_int(rc); +} + +static int +python_plugin_io_open(struct IOPluginContext *io_ctx, + unsigned int version, sudo_conv_t conversation, + sudo_printf_t sudo_printf, char * const settings[], + char * const user_info[], char * const command_info[], + int argc, char * const argv[], char * const user_env[], + char * const plugin_options[], const char **errstr) +{ + debug_decl(python_plugin_io_open, PYTHON_DEBUG_CALLBACKS); + + if (version < SUDO_API_MKVERSION(1, 2)) { + sudo_printf(SUDO_CONV_ERROR_MSG, + "Error: Python IO plugin requires at least plugin API version 1.2\n"); + debug_return_int(SUDO_RC_ERROR); + } + + int rc = python_plugin_register_logging(conversation, sudo_printf, settings); + if (rc != SUDO_RC_OK) + debug_return_int(rc); + + struct PluginContext *plugin_ctx = BASE_CTX(io_ctx); + rc = python_plugin_init(plugin_ctx, plugin_options, version); + + if (rc != SUDO_RC_OK) + debug_return_int(rc); + + rc = python_plugin_construct(plugin_ctx, PY_IO_PLUGIN_VERSION, + settings, user_info, user_env, plugin_options); + CALLBACK_SET_ERROR(plugin_ctx, errstr); + if (rc != SUDO_RC_OK) { + debug_return_int(rc); + } + + // skip plugin callbacks which are not mandatory + MARK_CALLBACK_OPTIONAL(log_ttyin); + MARK_CALLBACK_OPTIONAL(log_ttyout); + MARK_CALLBACK_OPTIONAL(log_stdin); + MARK_CALLBACK_OPTIONAL(log_stdout); + MARK_CALLBACK_OPTIONAL(log_stderr); + MARK_CALLBACK_OPTIONAL(change_winsize); + MARK_CALLBACK_OPTIONAL(log_suspend); + // open and close are mandatory + + if (argc > 0) // we only call open if there is request for running sg + rc = _call_plugin_open(io_ctx, argc, argv, command_info); + + CALLBACK_SET_ERROR(plugin_ctx, errstr); + debug_return_int(rc); +} + +static void +python_plugin_io_close(struct IOPluginContext *io_ctx, int exit_status, int error) +{ + debug_decl(python_plugin_io_close, PYTHON_DEBUG_CALLBACKS); + python_plugin_close(BASE_CTX(io_ctx), CALLBACK_PYNAME(close), + Py_BuildValue("(ii)", error == 0 ? exit_status : -1, error)); + debug_return; +} + +static int +python_plugin_io_show_version(struct IOPluginContext *io_ctx, int verbose) +{ + debug_decl(python_plugin_io_show_version, PYTHON_DEBUG_CALLBACKS); + + PyThreadState_Swap(BASE_CTX(io_ctx)->py_interpreter); + + debug_return_int(python_plugin_show_version(BASE_CTX(io_ctx), CALLBACK_PYNAME(show_version), + verbose, PY_IO_PLUGIN_VERSION, "io")); +} + +static int +python_plugin_io_log_ttyin(struct IOPluginContext *io_ctx, const char *buf, unsigned int len, const char **errstr) +{ + debug_decl(python_plugin_io_log_ttyin, PYTHON_DEBUG_CALLBACKS); + struct PluginContext *plugin_ctx = BASE_CTX(io_ctx); + PyThreadState_Swap(plugin_ctx->py_interpreter); + int rc = python_plugin_api_rc_call(plugin_ctx, CALLBACK_PYNAME(log_ttyin), + Py_BuildValue("(s#)", buf, len)); + CALLBACK_SET_ERROR(plugin_ctx, errstr); + debug_return_int(rc); +} + +static int +python_plugin_io_log_ttyout(struct IOPluginContext *io_ctx, const char *buf, unsigned int len, const char **errstr) +{ + debug_decl(python_plugin_io_log_ttyout, PYTHON_DEBUG_CALLBACKS); + struct PluginContext *plugin_ctx = BASE_CTX(io_ctx); + PyThreadState_Swap(plugin_ctx->py_interpreter); + int rc = python_plugin_api_rc_call(plugin_ctx, CALLBACK_PYNAME(log_ttyout), + Py_BuildValue("(s#)", buf, len)); + CALLBACK_SET_ERROR(plugin_ctx, errstr); + debug_return_int(rc); +} + +static int +python_plugin_io_log_stdin(struct IOPluginContext *io_ctx, const char *buf, unsigned int len, const char **errstr) +{ + debug_decl(python_plugin_io_log_stdin, PYTHON_DEBUG_CALLBACKS); + struct PluginContext *plugin_ctx = BASE_CTX(io_ctx); + PyThreadState_Swap(plugin_ctx->py_interpreter); + int rc = python_plugin_api_rc_call(plugin_ctx, CALLBACK_PYNAME(log_stdin), + Py_BuildValue("(s#)", buf, len)); + CALLBACK_SET_ERROR(plugin_ctx, errstr); + debug_return_int(rc); +} + +static int +python_plugin_io_log_stdout(struct IOPluginContext *io_ctx, const char *buf, unsigned int len, const char **errstr) +{ + debug_decl(python_plugin_io_log_stdout, PYTHON_DEBUG_CALLBACKS); + struct PluginContext *plugin_ctx = BASE_CTX(io_ctx); + PyThreadState_Swap(plugin_ctx->py_interpreter); + int rc = python_plugin_api_rc_call(plugin_ctx, CALLBACK_PYNAME(log_stdout), + Py_BuildValue("(s#)", buf, len)); + CALLBACK_SET_ERROR(plugin_ctx, errstr); + debug_return_int(rc); +} + +static int +python_plugin_io_log_stderr(struct IOPluginContext *io_ctx, const char *buf, unsigned int len, const char **errstr) +{ + debug_decl(python_plugin_io_log_stderr, PYTHON_DEBUG_CALLBACKS); + struct PluginContext *plugin_ctx = BASE_CTX(io_ctx); + PyThreadState_Swap(plugin_ctx->py_interpreter); + int rc = python_plugin_api_rc_call(plugin_ctx, CALLBACK_PYNAME(log_stderr), + Py_BuildValue("(s#)", buf, len)); + CALLBACK_SET_ERROR(plugin_ctx, errstr); + debug_return_int(rc); +} + +static int +python_plugin_io_change_winsize(struct IOPluginContext *io_ctx, unsigned int line, unsigned int cols, const char **errstr) +{ + debug_decl(python_plugin_io_change_winsize, PYTHON_DEBUG_CALLBACKS); + struct PluginContext *plugin_ctx = BASE_CTX(io_ctx); + PyThreadState_Swap(plugin_ctx->py_interpreter); + int rc = python_plugin_api_rc_call(plugin_ctx, CALLBACK_PYNAME(change_winsize), + Py_BuildValue("(ii)", line, cols)); + CALLBACK_SET_ERROR(plugin_ctx, errstr); + debug_return_int(rc); +} + +static int +python_plugin_io_log_suspend(struct IOPluginContext *io_ctx, int signo, const char **errstr) +{ + debug_decl(python_plugin_io_log_suspend, PYTHON_DEBUG_CALLBACKS); + struct PluginContext *plugin_ctx = BASE_CTX(io_ctx); + PyThreadState_Swap(plugin_ctx->py_interpreter); + int rc = python_plugin_api_rc_call(plugin_ctx, CALLBACK_PYNAME(log_suspend), + Py_BuildValue("(i)", signo)); + CALLBACK_SET_ERROR(plugin_ctx, errstr); + debug_return_int(rc); +} + +// generate symbols for loading multiple io plugins: +sudo_dso_public struct io_plugin python_io; +#define IO_SYMBOL_NAME(symbol) symbol +#include "python_plugin_io_multi.inc" +#define IO_SYMBOL_NAME(symbol) symbol##1 +#include "python_plugin_io_multi.inc" +#define IO_SYMBOL_NAME(symbol) symbol##2 +#include "python_plugin_io_multi.inc" +#define IO_SYMBOL_NAME(symbol) symbol##3 +#include "python_plugin_io_multi.inc" +#define IO_SYMBOL_NAME(symbol) symbol##4 +#include "python_plugin_io_multi.inc" +#define IO_SYMBOL_NAME(symbol) symbol##5 +#include "python_plugin_io_multi.inc" +#define IO_SYMBOL_NAME(symbol) symbol##6 +#include "python_plugin_io_multi.inc" +#define IO_SYMBOL_NAME(symbol) symbol##7 +#include "python_plugin_io_multi.inc" + +static struct io_plugin *extra_io_plugins[] = { + &python_io1, + &python_io2, + &python_io3, + &python_io4, + &python_io5, + &python_io6, + &python_io7 +}; + +struct io_plugin * +python_io_clone(void) +{ + static size_t counter = 0; + struct io_plugin *next_plugin = NULL; + + size_t max = sizeof(extra_io_plugins) / sizeof(*extra_io_plugins); + if (counter < max) { + next_plugin = extra_io_plugins[counter]; + ++counter; + } else if (counter == max) { + ++counter; + py_sudo_log(SUDO_CONV_ERROR_MSG, "sudo: loading more than %d sudo python IO plugins is not supported\n", counter); + } + + return next_plugin; +} -- cgit v1.2.3