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-rw-r--r--plugins/python/python_plugin_audit.c282
1 files changed, 282 insertions, 0 deletions
diff --git a/plugins/python/python_plugin_audit.c b/plugins/python/python_plugin_audit.c
new file mode 100644
index 0000000..ac40934
--- /dev/null
+++ b/plugins/python/python_plugin_audit.c
@@ -0,0 +1,282 @@
+/*
+ * SPDX-License-Identifier: ISC
+ *
+ * Copyright (c) 2020 Robert Manner <robert.manner@oneidentity.com>
+ *
+ * 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 AuditPluginContext
+{
+ struct PluginContext base_ctx;
+ struct audit_plugin *plugin;
+};
+
+#define BASE_CTX(audit_ctx) (&(audit_ctx->base_ctx))
+
+#define PY_AUDIT_PLUGIN_VERSION SUDO_API_MKVERSION(1, 0)
+
+#define CALLBACK_PLUGINFUNC(func_name) audit_ctx->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)
+
+
+static int
+_call_plugin_open(struct AuditPluginContext *audit_ctx, int submit_optind, char * const submit_argv[])
+{
+ debug_decl(_call_plugin_open, PYTHON_DEBUG_CALLBACKS);
+
+ struct PluginContext *plugin_ctx = BASE_CTX(audit_ctx);
+ if (!PyObject_HasAttrString(plugin_ctx->py_instance, CALLBACK_PYNAME(open))) {
+ debug_return_int(SUDO_RC_OK);
+ }
+
+ int rc = SUDO_RC_ERROR;
+ PyObject *py_submit_argv = py_str_array_to_tuple(submit_argv);
+
+ if (py_submit_argv != NULL) {
+ rc = python_plugin_api_rc_call(plugin_ctx, CALLBACK_PYNAME(open),
+ Py_BuildValue("(iO)", submit_optind, py_submit_argv));
+ } else {
+ rc = SUDO_RC_ERROR;
+ }
+
+ Py_XDECREF(py_submit_argv);
+ debug_return_int(rc);
+}
+
+static int
+python_plugin_audit_open(struct AuditPluginContext *audit_ctx,
+ unsigned int version, sudo_conv_t conversation,
+ sudo_printf_t sudo_printf, char * const settings[],
+ char * const user_info[], int submit_optind,
+ char * const submit_argv[], char * const submit_envp[],
+ char * const plugin_options[], const char **errstr)
+{
+ debug_decl(python_plugin_audit_open, PYTHON_DEBUG_CALLBACKS);
+ (void) version;
+
+ 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(audit_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_AUDIT_PLUGIN_VERSION, settings,
+ user_info, submit_envp, 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(accept);
+ MARK_CALLBACK_OPTIONAL(reject);
+ MARK_CALLBACK_OPTIONAL(error);
+
+ plugin_ctx->call_close = 1;
+ rc = _call_plugin_open(audit_ctx, submit_optind, submit_argv);
+ CALLBACK_SET_ERROR(plugin_ctx, errstr);
+
+ if (PyErr_Occurred()) {
+ py_log_last_error("Error during calling audit open");
+ }
+
+ debug_return_int(rc);
+}
+
+static void
+python_plugin_audit_close(struct AuditPluginContext *audit_ctx, int status_type, int status)
+{
+ debug_decl(python_plugin_audit_close, PYTHON_DEBUG_CALLBACKS);
+
+ python_plugin_close(BASE_CTX(audit_ctx), CALLBACK_PYNAME(close),
+ Py_BuildValue("(ii)", status_type, status));
+
+ debug_return;
+}
+
+int
+python_plugin_audit_accept(struct AuditPluginContext *audit_ctx,
+ const char *plugin_name, unsigned int plugin_type,
+ char * const command_info[], char * const run_argv[],
+ char * const run_envp[], const char **errstr)
+{
+ debug_decl(python_plugin_audit_accept, PYTHON_DEBUG_CALLBACKS);
+
+ struct PluginContext *plugin_ctx = BASE_CTX(audit_ctx);
+ PyThreadState_Swap(plugin_ctx->py_interpreter);
+
+ PyObject *py_command_info = NULL, *py_run_argv = NULL, *py_run_envp = NULL;
+ int rc = SUDO_RC_ERROR;
+
+ py_run_argv = py_str_array_to_tuple(run_argv);
+ if (py_run_argv == NULL)
+ goto cleanup;
+
+ py_command_info = py_str_array_to_tuple(command_info);
+ if (py_command_info == NULL)
+ goto cleanup;
+
+ py_run_envp = py_str_array_to_tuple(run_envp);
+ if (py_run_envp == NULL)
+ goto cleanup;
+
+ PyObject *py_args = Py_BuildValue("(ziOOO)", plugin_name, plugin_type, py_command_info, py_run_argv, py_run_envp);
+ rc = python_plugin_api_rc_call(plugin_ctx, CALLBACK_PYNAME(accept), py_args);
+ CALLBACK_SET_ERROR(plugin_ctx, errstr);
+
+cleanup:
+ Py_CLEAR(py_command_info);
+ Py_CLEAR(py_run_argv);
+ Py_CLEAR(py_run_envp);
+
+ debug_return_int(rc);
+}
+
+int
+python_plugin_audit_reject(struct AuditPluginContext *audit_ctx,
+ const char *plugin_name, unsigned int plugin_type,
+ const char *audit_msg, char * const command_info[], const char **errstr)
+{
+ debug_decl(python_plugin_audit_reject, PYTHON_DEBUG_CALLBACKS);
+
+ struct PluginContext *plugin_ctx = BASE_CTX(audit_ctx);
+ PyThreadState_Swap(plugin_ctx->py_interpreter);
+
+ PyObject *py_command_info = NULL;
+ int rc = SUDO_RC_ERROR;
+
+ py_command_info = py_str_array_to_tuple(command_info);
+ if (PyErr_Occurred())
+ goto cleanup;
+
+ PyObject *py_args = Py_BuildValue("(zizO)", plugin_name, plugin_type, audit_msg, py_command_info);
+ rc = python_plugin_api_rc_call(plugin_ctx, CALLBACK_PYNAME(reject), py_args);
+
+ CALLBACK_SET_ERROR(plugin_ctx, errstr);
+
+cleanup:
+ Py_CLEAR(py_command_info);
+ if (PyErr_Occurred())
+ py_log_last_error("Error during calling audit reject");
+
+ debug_return_int(rc);
+}
+
+int
+python_plugin_audit_error(struct AuditPluginContext *audit_ctx,
+ const char *plugin_name, unsigned int plugin_type,
+ const char *audit_msg, char * const command_info[], const char **errstr)
+{
+ debug_decl(python_plugin_audit_error, PYTHON_DEBUG_CALLBACKS);
+
+ struct PluginContext *plugin_ctx = BASE_CTX(audit_ctx);
+ PyThreadState_Swap(plugin_ctx->py_interpreter);
+
+ PyObject *py_command_info = NULL;
+ int rc = SUDO_RC_ERROR;
+
+ py_command_info = py_str_array_to_tuple(command_info);
+ if (PyErr_Occurred())
+ goto cleanup;
+
+ PyObject *py_args = Py_BuildValue("(zizO)", plugin_name, plugin_type, audit_msg, py_command_info);
+ rc = python_plugin_api_rc_call(plugin_ctx, CALLBACK_PYNAME(error), py_args);
+ CALLBACK_SET_ERROR(plugin_ctx, errstr);
+
+cleanup:
+ Py_CLEAR(py_command_info);
+
+ debug_return_int(rc);
+}
+
+int
+python_plugin_audit_show_version(struct AuditPluginContext *audit_ctx, int verbose)
+{
+ debug_decl(python_plugin_audit_show_version, PYTHON_DEBUG_CALLBACKS);
+
+ struct PluginContext *plugin_ctx = BASE_CTX(audit_ctx);
+ PyThreadState_Swap(plugin_ctx->py_interpreter);
+
+ debug_return_int(python_plugin_show_version(plugin_ctx,
+ CALLBACK_PYNAME(show_version), verbose, PY_AUDIT_PLUGIN_VERSION, "audit"));
+}
+
+sudo_dso_public struct audit_plugin python_audit;
+
+// generate symbols for loading multiple audit plugins:
+#define AUDIT_SYMBOL_NAME(symbol) symbol
+#include "python_plugin_audit_multi.inc"
+#define AUDIT_SYMBOL_NAME(symbol) symbol##1
+#include "python_plugin_audit_multi.inc"
+#define AUDIT_SYMBOL_NAME(symbol) symbol##2
+#include "python_plugin_audit_multi.inc"
+#define AUDIT_SYMBOL_NAME(symbol) symbol##3
+#include "python_plugin_audit_multi.inc"
+#define AUDIT_SYMBOL_NAME(symbol) symbol##4
+#include "python_plugin_audit_multi.inc"
+#define AUDIT_SYMBOL_NAME(symbol) symbol##5
+#include "python_plugin_audit_multi.inc"
+#define AUDIT_SYMBOL_NAME(symbol) symbol##6
+#include "python_plugin_audit_multi.inc"
+#define AUDIT_SYMBOL_NAME(symbol) symbol##7
+#include "python_plugin_audit_multi.inc"
+
+static struct audit_plugin *extra_audit_plugins[] = {
+ &python_audit1,
+ &python_audit2,
+ &python_audit3,
+ &python_audit4,
+ &python_audit5,
+ &python_audit6,
+ &python_audit7
+};
+
+sudo_dso_public struct audit_plugin *
+python_audit_clone(void)
+{
+ static size_t counter = 0;
+ struct audit_plugin *next_plugin = NULL;
+
+ size_t max = sizeof(extra_audit_plugins) / sizeof(*extra_audit_plugins);
+ if (counter < max) {
+ next_plugin = extra_audit_plugins[counter];
+ ++counter;
+ } else if (counter == max) {
+ ++counter;
+ py_sudo_log(SUDO_CONV_ERROR_MSG, "sudo: loading more than %d sudo python audit plugins is not supported\n", counter);
+ }
+
+ return next_plugin;
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-20 09:15:56 +0000