efd7c40712
This patch updates the log messages to include descriptive names for event types. This is an improvement over having only cryptic type numbers. (closes issue ASTERISK-22909) Reported by: outtolunc Review: https://reviewboard.asterisk.org/r/3081/ Patches: svn_security_events.c.names.diff.txt uploaded by outtolunc (license 5198) git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@404387 65c4cc65-6c06-0410-ace0-fbb531ad65f3
853 lines
26 KiB
C
853 lines
26 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 2012, Digium, Inc.
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*
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* Russell Bryant <russell@digium.com>
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*
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* See http://www.asterisk.org for more information about
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* the Asterisk project. Please do not directly contact
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* any of the maintainers of this project for assistance;
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* the project provides a web site, mailing lists and IRC
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* channels for your use.
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License Version 2. See the LICENSE file
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* at the top of the source tree.
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*/
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/*!
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* \file
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*
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* \brief Security Event Reporting Helpers
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*
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* \author Russell Bryant <russell@digium.com>
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*/
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/*** MODULEINFO
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<support_level>core</support_level>
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***/
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#include "asterisk.h"
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ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
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#include "asterisk/utils.h"
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#include "asterisk/strings.h"
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#include "asterisk/network.h"
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#include "asterisk/event.h"
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#include "asterisk/security_events.h"
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#include "asterisk/netsock2.h"
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#include "asterisk/stasis.h"
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#include "asterisk/json.h"
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#include "asterisk/astobj2.h"
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static const size_t TIMESTAMP_STR_LEN = 32;
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static const size_t SECURITY_EVENT_BUF_INIT_LEN = 256;
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/*! \brief Security Topic */
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static struct stasis_topic *security_topic;
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struct stasis_topic *ast_security_topic(void)
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{
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return security_topic;
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}
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static int append_event_str_single(struct ast_str **str, struct ast_json *json,
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const enum ast_event_ie_type ie_type)
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{
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const char *ie_type_key = ast_event_get_ie_type_name(ie_type);
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struct ast_json *json_string = ast_json_object_get(json, ie_type_key);
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ast_assert(json_string != NULL);
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if (ast_str_append(str, 0, "%s: %s\r\n", ie_type_key, ast_json_string_get(json_string)) == -1) {
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return -1;
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}
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return 0;
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}
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static int append_event_str_from_json(struct ast_str **str, struct ast_json *json,
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const struct ast_security_event_ie_type *ies)
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{
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unsigned int i;
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for (i = 0; ies[i].ie_type != AST_EVENT_IE_END; i++) {
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if (append_event_str_single(str, json, ies[i].ie_type)) {
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return -1;
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}
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}
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return 0;
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}
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static struct ast_manager_event_blob *security_event_to_ami_blob(struct ast_json *json)
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{
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RAII_VAR(struct ast_str *, str, NULL, ast_free);
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struct ast_json *event_type_json;
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enum ast_security_event_type event_type;
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event_type_json = ast_json_object_get(json, "SecurityEvent");
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event_type = ast_json_integer_get(event_type_json);
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ast_assert(event_type >= 0 && event_type < AST_SECURITY_EVENT_NUM_TYPES);
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if (!(str = ast_str_create(SECURITY_EVENT_BUF_INIT_LEN))) {
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return NULL;
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}
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if (append_event_str_from_json(&str, json,
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ast_security_event_get_required_ies(event_type))) {
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ast_log(LOG_ERROR, "Failed to issue a security event to AMI.\n");
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return NULL;
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}
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return ast_manager_event_blob_create(EVENT_FLAG_SECURITY,
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ast_security_event_get_name(event_type),
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"%s",
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ast_str_buffer(str));
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}
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static struct ast_manager_event_blob *security_event_to_ami(struct stasis_message *message)
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{
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struct ast_json_payload *payload = stasis_message_data(message);
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if (stasis_message_type(message) != ast_security_event_type()) {
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return NULL;
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}
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if (!payload) {
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return NULL;
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}
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return security_event_to_ami_blob(payload->json);
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}
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/*! \brief Message type for security events */
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STASIS_MESSAGE_TYPE_DEFN(ast_security_event_type,
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.to_ami = security_event_to_ami,
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);
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static void security_stasis_cleanup(void)
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{
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ao2_cleanup(security_topic);
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security_topic = NULL;
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STASIS_MESSAGE_TYPE_CLEANUP(ast_security_event_type);
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}
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int ast_security_stasis_init(void)
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{
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ast_register_cleanup(security_stasis_cleanup);
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security_topic = stasis_topic_create("ast_security");
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if (!security_topic) {
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return -1;
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}
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if (STASIS_MESSAGE_TYPE_INIT(ast_security_event_type)) {
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return -1;
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}
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return 0;
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}
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static const struct {
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const char *name;
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uint32_t version;
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enum ast_security_event_severity severity;
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#define MAX_SECURITY_IES 12
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struct ast_security_event_ie_type required_ies[MAX_SECURITY_IES];
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struct ast_security_event_ie_type optional_ies[MAX_SECURITY_IES];
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#undef MAX_SECURITY_IES
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} sec_events[AST_SECURITY_EVENT_NUM_TYPES] = {
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#define SEC_EVT_FIELD(e, field) (offsetof(struct ast_security_event_##e, field))
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[AST_SECURITY_EVENT_FAILED_ACL] = {
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.name = "FailedACL",
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.version = AST_SECURITY_EVENT_FAILED_ACL_VERSION,
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.severity = AST_SECURITY_EVENT_SEVERITY_ERROR,
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.required_ies = {
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{ AST_EVENT_IE_EVENT_TV, 0 },
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{ AST_EVENT_IE_SEVERITY, 0 },
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{ AST_EVENT_IE_SERVICE, SEC_EVT_FIELD(common, service) },
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{ AST_EVENT_IE_EVENT_VERSION, SEC_EVT_FIELD(common, version) },
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{ AST_EVENT_IE_ACCOUNT_ID, SEC_EVT_FIELD(common, account_id) },
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{ AST_EVENT_IE_SESSION_ID, SEC_EVT_FIELD(common, session_id) },
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{ AST_EVENT_IE_LOCAL_ADDR, SEC_EVT_FIELD(common, local_addr) },
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{ AST_EVENT_IE_REMOTE_ADDR, SEC_EVT_FIELD(common, remote_addr) },
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{ AST_EVENT_IE_END, 0 }
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},
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.optional_ies = {
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{ AST_EVENT_IE_MODULE, SEC_EVT_FIELD(common, module) },
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{ AST_EVENT_IE_ACL_NAME, SEC_EVT_FIELD(failed_acl, acl_name) },
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{ AST_EVENT_IE_SESSION_TV, SEC_EVT_FIELD(common, session_tv) },
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{ AST_EVENT_IE_END, 0 }
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},
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},
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[AST_SECURITY_EVENT_INVAL_ACCT_ID] = {
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.name = "InvalidAccountID",
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.version = AST_SECURITY_EVENT_INVAL_ACCT_ID_VERSION,
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.severity = AST_SECURITY_EVENT_SEVERITY_ERROR,
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.required_ies = {
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{ AST_EVENT_IE_EVENT_TV, 0 },
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{ AST_EVENT_IE_SEVERITY, 0 },
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{ AST_EVENT_IE_SERVICE, SEC_EVT_FIELD(common, service) },
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{ AST_EVENT_IE_EVENT_VERSION, SEC_EVT_FIELD(common, version) },
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{ AST_EVENT_IE_ACCOUNT_ID, SEC_EVT_FIELD(common, account_id) },
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{ AST_EVENT_IE_SESSION_ID, SEC_EVT_FIELD(common, session_id) },
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{ AST_EVENT_IE_LOCAL_ADDR, SEC_EVT_FIELD(common, local_addr) },
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{ AST_EVENT_IE_REMOTE_ADDR, SEC_EVT_FIELD(common, remote_addr) },
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{ AST_EVENT_IE_END, 0 }
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},
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.optional_ies = {
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{ AST_EVENT_IE_MODULE, SEC_EVT_FIELD(common, module) },
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{ AST_EVENT_IE_SESSION_TV, SEC_EVT_FIELD(common, session_tv) },
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{ AST_EVENT_IE_END, 0 }
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},
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},
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[AST_SECURITY_EVENT_SESSION_LIMIT] = {
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.name = "SessionLimit",
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.version = AST_SECURITY_EVENT_SESSION_LIMIT_VERSION,
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.severity = AST_SECURITY_EVENT_SEVERITY_ERROR,
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.required_ies = {
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{ AST_EVENT_IE_EVENT_TV, 0 },
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{ AST_EVENT_IE_SEVERITY, 0 },
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{ AST_EVENT_IE_SERVICE, SEC_EVT_FIELD(common, service) },
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{ AST_EVENT_IE_EVENT_VERSION, SEC_EVT_FIELD(common, version) },
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{ AST_EVENT_IE_ACCOUNT_ID, SEC_EVT_FIELD(common, account_id) },
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{ AST_EVENT_IE_SESSION_ID, SEC_EVT_FIELD(common, session_id) },
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{ AST_EVENT_IE_LOCAL_ADDR, SEC_EVT_FIELD(common, local_addr) },
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{ AST_EVENT_IE_REMOTE_ADDR, SEC_EVT_FIELD(common, remote_addr) },
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{ AST_EVENT_IE_END, 0 }
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},
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.optional_ies = {
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{ AST_EVENT_IE_MODULE, SEC_EVT_FIELD(common, module) },
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{ AST_EVENT_IE_SESSION_TV, SEC_EVT_FIELD(common, session_tv) },
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{ AST_EVENT_IE_END, 0 }
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},
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},
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[AST_SECURITY_EVENT_MEM_LIMIT] = {
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.name = "MemoryLimit",
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.version = AST_SECURITY_EVENT_MEM_LIMIT_VERSION,
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.severity = AST_SECURITY_EVENT_SEVERITY_ERROR,
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.required_ies = {
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{ AST_EVENT_IE_EVENT_TV, 0 },
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{ AST_EVENT_IE_SEVERITY, 0 },
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{ AST_EVENT_IE_SERVICE, SEC_EVT_FIELD(common, service) },
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{ AST_EVENT_IE_EVENT_VERSION, SEC_EVT_FIELD(common, version) },
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{ AST_EVENT_IE_ACCOUNT_ID, SEC_EVT_FIELD(common, account_id) },
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{ AST_EVENT_IE_SESSION_ID, SEC_EVT_FIELD(common, session_id) },
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{ AST_EVENT_IE_LOCAL_ADDR, SEC_EVT_FIELD(common, local_addr) },
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{ AST_EVENT_IE_REMOTE_ADDR, SEC_EVT_FIELD(common, remote_addr) },
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{ AST_EVENT_IE_END, 0 }
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},
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.optional_ies = {
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{ AST_EVENT_IE_MODULE, SEC_EVT_FIELD(common, module) },
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{ AST_EVENT_IE_SESSION_TV, SEC_EVT_FIELD(common, session_tv) },
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{ AST_EVENT_IE_END, 0 }
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},
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},
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[AST_SECURITY_EVENT_LOAD_AVG] = {
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.name = "LoadAverageLimit",
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.version = AST_SECURITY_EVENT_LOAD_AVG_VERSION,
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.severity = AST_SECURITY_EVENT_SEVERITY_ERROR,
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.required_ies = {
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{ AST_EVENT_IE_EVENT_TV, 0 },
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{ AST_EVENT_IE_SEVERITY, 0 },
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{ AST_EVENT_IE_SERVICE, SEC_EVT_FIELD(common, service) },
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{ AST_EVENT_IE_EVENT_VERSION, SEC_EVT_FIELD(common, version) },
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{ AST_EVENT_IE_ACCOUNT_ID, SEC_EVT_FIELD(common, account_id) },
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{ AST_EVENT_IE_SESSION_ID, SEC_EVT_FIELD(common, session_id) },
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{ AST_EVENT_IE_LOCAL_ADDR, SEC_EVT_FIELD(common, local_addr) },
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{ AST_EVENT_IE_REMOTE_ADDR, SEC_EVT_FIELD(common, remote_addr) },
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{ AST_EVENT_IE_END, 0 }
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},
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.optional_ies = {
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{ AST_EVENT_IE_MODULE, SEC_EVT_FIELD(common, module) },
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{ AST_EVENT_IE_SESSION_TV, SEC_EVT_FIELD(common, session_tv) },
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{ AST_EVENT_IE_END, 0 }
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},
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},
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[AST_SECURITY_EVENT_REQ_NO_SUPPORT] = {
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.name = "RequestNotSupported",
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.version = AST_SECURITY_EVENT_REQ_NO_SUPPORT_VERSION,
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.severity = AST_SECURITY_EVENT_SEVERITY_ERROR,
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.required_ies = {
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{ AST_EVENT_IE_EVENT_TV, 0 },
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{ AST_EVENT_IE_SEVERITY, 0 },
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{ AST_EVENT_IE_SERVICE, SEC_EVT_FIELD(common, service) },
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{ AST_EVENT_IE_EVENT_VERSION, SEC_EVT_FIELD(common, version) },
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{ AST_EVENT_IE_ACCOUNT_ID, SEC_EVT_FIELD(common, account_id) },
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{ AST_EVENT_IE_SESSION_ID, SEC_EVT_FIELD(common, session_id) },
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{ AST_EVENT_IE_LOCAL_ADDR, SEC_EVT_FIELD(common, local_addr) },
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{ AST_EVENT_IE_REMOTE_ADDR, SEC_EVT_FIELD(common, remote_addr) },
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{ AST_EVENT_IE_REQUEST_TYPE, SEC_EVT_FIELD(req_no_support, request_type) },
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{ AST_EVENT_IE_END, 0 }
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},
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.optional_ies = {
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{ AST_EVENT_IE_MODULE, SEC_EVT_FIELD(common, module) },
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{ AST_EVENT_IE_SESSION_TV, SEC_EVT_FIELD(common, session_tv) },
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{ AST_EVENT_IE_END, 0 }
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},
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},
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[AST_SECURITY_EVENT_REQ_NOT_ALLOWED] = {
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.name = "RequestNotAllowed",
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.version = AST_SECURITY_EVENT_REQ_NOT_ALLOWED_VERSION,
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.severity = AST_SECURITY_EVENT_SEVERITY_ERROR,
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.required_ies = {
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{ AST_EVENT_IE_EVENT_TV, 0 },
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{ AST_EVENT_IE_SEVERITY, 0 },
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{ AST_EVENT_IE_SERVICE, SEC_EVT_FIELD(common, service) },
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{ AST_EVENT_IE_EVENT_VERSION, SEC_EVT_FIELD(common, version) },
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{ AST_EVENT_IE_ACCOUNT_ID, SEC_EVT_FIELD(common, account_id) },
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{ AST_EVENT_IE_SESSION_ID, SEC_EVT_FIELD(common, session_id) },
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{ AST_EVENT_IE_LOCAL_ADDR, SEC_EVT_FIELD(common, local_addr) },
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{ AST_EVENT_IE_REMOTE_ADDR, SEC_EVT_FIELD(common, remote_addr) },
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{ AST_EVENT_IE_REQUEST_TYPE, SEC_EVT_FIELD(req_not_allowed, request_type) },
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{ AST_EVENT_IE_END, 0 }
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},
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.optional_ies = {
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{ AST_EVENT_IE_MODULE, SEC_EVT_FIELD(common, module) },
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{ AST_EVENT_IE_SESSION_TV, SEC_EVT_FIELD(common, session_tv) },
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{ AST_EVENT_IE_REQUEST_PARAMS, SEC_EVT_FIELD(req_not_allowed, request_params) },
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{ AST_EVENT_IE_END, 0 }
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},
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},
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[AST_SECURITY_EVENT_AUTH_METHOD_NOT_ALLOWED] = {
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.name = "AuthMethodNotAllowed",
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.version = AST_SECURITY_EVENT_AUTH_METHOD_NOT_ALLOWED_VERSION,
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.severity = AST_SECURITY_EVENT_SEVERITY_ERROR,
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.required_ies = {
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{ AST_EVENT_IE_EVENT_TV, 0 },
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{ AST_EVENT_IE_SEVERITY, 0 },
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{ AST_EVENT_IE_SERVICE, SEC_EVT_FIELD(common, service) },
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{ AST_EVENT_IE_EVENT_VERSION, SEC_EVT_FIELD(common, version) },
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{ AST_EVENT_IE_ACCOUNT_ID, SEC_EVT_FIELD(common, account_id) },
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{ AST_EVENT_IE_SESSION_ID, SEC_EVT_FIELD(common, session_id) },
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{ AST_EVENT_IE_LOCAL_ADDR, SEC_EVT_FIELD(common, local_addr) },
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{ AST_EVENT_IE_REMOTE_ADDR, SEC_EVT_FIELD(common, remote_addr) },
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{ AST_EVENT_IE_AUTH_METHOD, SEC_EVT_FIELD(auth_method_not_allowed, auth_method) },
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{ AST_EVENT_IE_END, 0 }
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},
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.optional_ies = {
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{ AST_EVENT_IE_MODULE, SEC_EVT_FIELD(common, module) },
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{ AST_EVENT_IE_SESSION_TV, SEC_EVT_FIELD(common, session_tv) },
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{ AST_EVENT_IE_END, 0 }
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},
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},
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[AST_SECURITY_EVENT_REQ_BAD_FORMAT] = {
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.name = "RequestBadFormat",
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.version = AST_SECURITY_EVENT_REQ_BAD_FORMAT_VERSION,
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.severity = AST_SECURITY_EVENT_SEVERITY_ERROR,
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.required_ies = {
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{ AST_EVENT_IE_EVENT_TV, 0 },
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{ AST_EVENT_IE_SEVERITY, 0 },
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{ AST_EVENT_IE_SERVICE, SEC_EVT_FIELD(common, service) },
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{ AST_EVENT_IE_EVENT_VERSION, SEC_EVT_FIELD(common, version) },
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{ AST_EVENT_IE_SESSION_ID, SEC_EVT_FIELD(common, session_id) },
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{ AST_EVENT_IE_LOCAL_ADDR, SEC_EVT_FIELD(common, local_addr) },
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{ AST_EVENT_IE_REMOTE_ADDR, SEC_EVT_FIELD(common, remote_addr) },
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{ AST_EVENT_IE_REQUEST_TYPE, SEC_EVT_FIELD(req_bad_format, request_type) },
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{ AST_EVENT_IE_END, 0 }
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},
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.optional_ies = {
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{ AST_EVENT_IE_MODULE, SEC_EVT_FIELD(common, module) },
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{ AST_EVENT_IE_SESSION_TV, SEC_EVT_FIELD(common, session_tv) },
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{ AST_EVENT_IE_ACCOUNT_ID, SEC_EVT_FIELD(common, account_id) },
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{ AST_EVENT_IE_REQUEST_PARAMS, SEC_EVT_FIELD(req_bad_format, request_params) },
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{ AST_EVENT_IE_END, 0 }
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},
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},
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[AST_SECURITY_EVENT_SUCCESSFUL_AUTH] = {
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.name = "SuccessfulAuth",
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.version = AST_SECURITY_EVENT_SUCCESSFUL_AUTH_VERSION,
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.severity = AST_SECURITY_EVENT_SEVERITY_INFO,
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.required_ies = {
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{ AST_EVENT_IE_EVENT_TV, 0 },
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{ AST_EVENT_IE_SEVERITY, 0 },
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{ AST_EVENT_IE_SERVICE, SEC_EVT_FIELD(common, service) },
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{ AST_EVENT_IE_EVENT_VERSION, SEC_EVT_FIELD(common, version) },
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{ AST_EVENT_IE_ACCOUNT_ID, SEC_EVT_FIELD(common, account_id) },
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{ AST_EVENT_IE_SESSION_ID, SEC_EVT_FIELD(common, session_id) },
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{ AST_EVENT_IE_LOCAL_ADDR, SEC_EVT_FIELD(common, local_addr) },
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{ AST_EVENT_IE_REMOTE_ADDR, SEC_EVT_FIELD(common, remote_addr) },
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{ AST_EVENT_IE_USING_PASSWORD, SEC_EVT_FIELD(successful_auth, using_password) },
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{ AST_EVENT_IE_END, 0 }
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},
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.optional_ies = {
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{ AST_EVENT_IE_MODULE, SEC_EVT_FIELD(common, module) },
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{ AST_EVENT_IE_SESSION_TV, SEC_EVT_FIELD(common, session_tv) },
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{ AST_EVENT_IE_END, 0 }
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},
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},
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[AST_SECURITY_EVENT_UNEXPECTED_ADDR] = {
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.name = "UnexpectedAddress",
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.version = AST_SECURITY_EVENT_UNEXPECTED_ADDR_VERSION,
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.severity = AST_SECURITY_EVENT_SEVERITY_ERROR,
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.required_ies = {
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{ AST_EVENT_IE_EVENT_TV, 0 },
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{ AST_EVENT_IE_SEVERITY, 0 },
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{ AST_EVENT_IE_SERVICE, SEC_EVT_FIELD(common, service) },
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{ AST_EVENT_IE_EVENT_VERSION, SEC_EVT_FIELD(common, version) },
|
|
{ AST_EVENT_IE_ACCOUNT_ID, SEC_EVT_FIELD(common, account_id) },
|
|
{ AST_EVENT_IE_SESSION_ID, SEC_EVT_FIELD(common, session_id) },
|
|
{ AST_EVENT_IE_LOCAL_ADDR, SEC_EVT_FIELD(common, local_addr) },
|
|
{ AST_EVENT_IE_REMOTE_ADDR, SEC_EVT_FIELD(common, remote_addr) },
|
|
{ AST_EVENT_IE_EXPECTED_ADDR, SEC_EVT_FIELD(unexpected_addr, expected_addr) },
|
|
{ AST_EVENT_IE_END, 0 }
|
|
},
|
|
.optional_ies = {
|
|
{ AST_EVENT_IE_MODULE, SEC_EVT_FIELD(common, module) },
|
|
{ AST_EVENT_IE_SESSION_TV, SEC_EVT_FIELD(common, session_tv) },
|
|
{ AST_EVENT_IE_END, 0 }
|
|
},
|
|
},
|
|
|
|
[AST_SECURITY_EVENT_CHAL_RESP_FAILED] = {
|
|
.name = "ChallengeResponseFailed",
|
|
.version = AST_SECURITY_EVENT_CHAL_RESP_FAILED_VERSION,
|
|
.severity = AST_SECURITY_EVENT_SEVERITY_ERROR,
|
|
.required_ies = {
|
|
{ AST_EVENT_IE_EVENT_TV, 0 },
|
|
{ AST_EVENT_IE_SEVERITY, 0 },
|
|
{ AST_EVENT_IE_SERVICE, SEC_EVT_FIELD(common, service) },
|
|
{ AST_EVENT_IE_EVENT_VERSION, SEC_EVT_FIELD(common, version) },
|
|
{ AST_EVENT_IE_ACCOUNT_ID, SEC_EVT_FIELD(common, account_id) },
|
|
{ AST_EVENT_IE_SESSION_ID, SEC_EVT_FIELD(common, session_id) },
|
|
{ AST_EVENT_IE_LOCAL_ADDR, SEC_EVT_FIELD(common, local_addr) },
|
|
{ AST_EVENT_IE_REMOTE_ADDR, SEC_EVT_FIELD(common, remote_addr) },
|
|
{ AST_EVENT_IE_CHALLENGE, SEC_EVT_FIELD(chal_resp_failed, challenge) },
|
|
{ AST_EVENT_IE_RESPONSE, SEC_EVT_FIELD(chal_resp_failed, response) },
|
|
{ AST_EVENT_IE_EXPECTED_RESPONSE, SEC_EVT_FIELD(chal_resp_failed, expected_response) },
|
|
{ AST_EVENT_IE_END, 0 }
|
|
},
|
|
.optional_ies = {
|
|
{ AST_EVENT_IE_MODULE, SEC_EVT_FIELD(common, module) },
|
|
{ AST_EVENT_IE_SESSION_TV, SEC_EVT_FIELD(common, session_tv) },
|
|
{ AST_EVENT_IE_END, 0 }
|
|
},
|
|
},
|
|
|
|
[AST_SECURITY_EVENT_INVAL_PASSWORD] = {
|
|
.name = "InvalidPassword",
|
|
.version = AST_SECURITY_EVENT_INVAL_PASSWORD_VERSION,
|
|
.severity = AST_SECURITY_EVENT_SEVERITY_ERROR,
|
|
.required_ies = {
|
|
{ AST_EVENT_IE_EVENT_TV, 0 },
|
|
{ AST_EVENT_IE_SEVERITY, 0 },
|
|
{ AST_EVENT_IE_SERVICE, SEC_EVT_FIELD(common, service) },
|
|
{ AST_EVENT_IE_EVENT_VERSION, SEC_EVT_FIELD(common, version) },
|
|
{ AST_EVENT_IE_ACCOUNT_ID, SEC_EVT_FIELD(common, account_id) },
|
|
{ AST_EVENT_IE_SESSION_ID, SEC_EVT_FIELD(common, session_id) },
|
|
{ AST_EVENT_IE_LOCAL_ADDR, SEC_EVT_FIELD(common, local_addr) },
|
|
{ AST_EVENT_IE_REMOTE_ADDR, SEC_EVT_FIELD(common, remote_addr) },
|
|
{ AST_EVENT_IE_END, 0 }
|
|
},
|
|
.optional_ies = {
|
|
{ AST_EVENT_IE_MODULE, SEC_EVT_FIELD(common, module) },
|
|
{ AST_EVENT_IE_SESSION_TV, SEC_EVT_FIELD(common, session_tv) },
|
|
{ AST_EVENT_IE_CHALLENGE, SEC_EVT_FIELD(inval_password, challenge) },
|
|
{ AST_EVENT_IE_RECEIVED_CHALLENGE, SEC_EVT_FIELD(inval_password, received_challenge) },
|
|
{ AST_EVENT_IE_RECEIVED_HASH, SEC_EVT_FIELD(inval_password, received_hash) },
|
|
{ AST_EVENT_IE_END, 0 }
|
|
},
|
|
},
|
|
|
|
[AST_SECURITY_EVENT_CHAL_SENT] = {
|
|
.name = "ChallengeSent",
|
|
.version = AST_SECURITY_EVENT_CHAL_SENT_VERSION,
|
|
.severity = AST_SECURITY_EVENT_SEVERITY_INFO,
|
|
.required_ies = {
|
|
{ AST_EVENT_IE_EVENT_TV, 0 },
|
|
{ AST_EVENT_IE_SEVERITY, 0 },
|
|
{ AST_EVENT_IE_SERVICE, SEC_EVT_FIELD(common, service) },
|
|
{ AST_EVENT_IE_EVENT_VERSION, SEC_EVT_FIELD(common, version) },
|
|
{ AST_EVENT_IE_ACCOUNT_ID, SEC_EVT_FIELD(common, account_id) },
|
|
{ AST_EVENT_IE_SESSION_ID, SEC_EVT_FIELD(common, session_id) },
|
|
{ AST_EVENT_IE_LOCAL_ADDR, SEC_EVT_FIELD(common, local_addr) },
|
|
{ AST_EVENT_IE_REMOTE_ADDR, SEC_EVT_FIELD(common, remote_addr) },
|
|
{ AST_EVENT_IE_CHALLENGE, SEC_EVT_FIELD(chal_sent, challenge) },
|
|
{ AST_EVENT_IE_END, 0 }
|
|
},
|
|
.optional_ies = {
|
|
{ AST_EVENT_IE_MODULE, SEC_EVT_FIELD(common, module) },
|
|
{ AST_EVENT_IE_SESSION_TV, SEC_EVT_FIELD(common, session_tv) },
|
|
{ AST_EVENT_IE_END, 0 }
|
|
},
|
|
},
|
|
|
|
[AST_SECURITY_EVENT_INVAL_TRANSPORT] = {
|
|
.name = "InvalidTransport",
|
|
.version = AST_SECURITY_EVENT_INVAL_TRANSPORT_VERSION,
|
|
.severity = AST_SECURITY_EVENT_SEVERITY_ERROR,
|
|
.required_ies = {
|
|
{ AST_EVENT_IE_EVENT_TV, 0 },
|
|
{ AST_EVENT_IE_SEVERITY, 0 },
|
|
{ AST_EVENT_IE_SERVICE, SEC_EVT_FIELD(common, service) },
|
|
{ AST_EVENT_IE_EVENT_VERSION, SEC_EVT_FIELD(common, version) },
|
|
{ AST_EVENT_IE_ACCOUNT_ID, SEC_EVT_FIELD(common, account_id) },
|
|
{ AST_EVENT_IE_SESSION_ID, SEC_EVT_FIELD(common, session_id) },
|
|
{ AST_EVENT_IE_LOCAL_ADDR, SEC_EVT_FIELD(common, local_addr) },
|
|
{ AST_EVENT_IE_REMOTE_ADDR, SEC_EVT_FIELD(common, remote_addr) },
|
|
{ AST_EVENT_IE_ATTEMPTED_TRANSPORT, SEC_EVT_FIELD(inval_transport, transport) },
|
|
{ AST_EVENT_IE_END, 0 }
|
|
},
|
|
.optional_ies = {
|
|
{ AST_EVENT_IE_MODULE, SEC_EVT_FIELD(common, module) },
|
|
{ AST_EVENT_IE_SESSION_TV, SEC_EVT_FIELD(common, session_tv) },
|
|
{ AST_EVENT_IE_END, 0 }
|
|
},
|
|
},
|
|
|
|
#undef SEC_EVT_FIELD
|
|
|
|
};
|
|
|
|
static const struct {
|
|
enum ast_security_event_severity severity;
|
|
const char *str;
|
|
} severities[] = {
|
|
{ AST_SECURITY_EVENT_SEVERITY_INFO, "Informational" },
|
|
{ AST_SECURITY_EVENT_SEVERITY_ERROR, "Error" },
|
|
};
|
|
|
|
const char *ast_security_event_severity_get_name(
|
|
const enum ast_security_event_severity severity)
|
|
{
|
|
unsigned int i;
|
|
|
|
for (i = 0; i < ARRAY_LEN(severities); i++) {
|
|
if (severities[i].severity == severity) {
|
|
return severities[i].str;
|
|
}
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
static int check_event_type(const enum ast_security_event_type event_type)
|
|
{
|
|
if (event_type < 0 || event_type >= AST_SECURITY_EVENT_NUM_TYPES) {
|
|
ast_log(LOG_ERROR, "Invalid security event type %u\n", event_type);
|
|
return -1;
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
const char *ast_security_event_get_name(const enum ast_security_event_type event_type)
|
|
{
|
|
if (check_event_type(event_type)) {
|
|
return NULL;
|
|
}
|
|
|
|
return sec_events[event_type].name;
|
|
}
|
|
|
|
const struct ast_security_event_ie_type *ast_security_event_get_required_ies(
|
|
const enum ast_security_event_type event_type)
|
|
{
|
|
if (check_event_type(event_type)) {
|
|
return NULL;
|
|
}
|
|
|
|
return sec_events[event_type].required_ies;
|
|
}
|
|
|
|
const struct ast_security_event_ie_type *ast_security_event_get_optional_ies(
|
|
const enum ast_security_event_type event_type)
|
|
{
|
|
if (check_event_type(event_type)) {
|
|
return NULL;
|
|
}
|
|
|
|
return sec_events[event_type].optional_ies;
|
|
}
|
|
|
|
static int add_ip_json_object(struct ast_json *json, enum ast_event_ie_type ie_type,
|
|
const struct ast_security_event_ip_addr *addr)
|
|
{
|
|
struct ast_json *json_ip;
|
|
|
|
json_ip = ast_json_ipaddr(addr->addr, addr->transport);
|
|
if (!json_ip) {
|
|
return -1;
|
|
}
|
|
|
|
return ast_json_object_set(json, ast_event_get_ie_type_name(ie_type), json_ip);
|
|
}
|
|
|
|
enum ie_required {
|
|
NOT_REQUIRED,
|
|
REQUIRED
|
|
};
|
|
|
|
static int add_json_object(struct ast_json *json, const struct ast_security_event_common *sec,
|
|
const struct ast_security_event_ie_type *ie_type, enum ie_required req)
|
|
{
|
|
int res = 0;
|
|
|
|
switch (ie_type->ie_type) {
|
|
case AST_EVENT_IE_SERVICE:
|
|
case AST_EVENT_IE_ACCOUNT_ID:
|
|
case AST_EVENT_IE_SESSION_ID:
|
|
case AST_EVENT_IE_MODULE:
|
|
case AST_EVENT_IE_ACL_NAME:
|
|
case AST_EVENT_IE_REQUEST_TYPE:
|
|
case AST_EVENT_IE_REQUEST_PARAMS:
|
|
case AST_EVENT_IE_AUTH_METHOD:
|
|
case AST_EVENT_IE_CHALLENGE:
|
|
case AST_EVENT_IE_RESPONSE:
|
|
case AST_EVENT_IE_EXPECTED_RESPONSE:
|
|
case AST_EVENT_IE_RECEIVED_CHALLENGE:
|
|
case AST_EVENT_IE_RECEIVED_HASH:
|
|
case AST_EVENT_IE_ATTEMPTED_TRANSPORT:
|
|
{
|
|
const char *str;
|
|
struct ast_json *json_string;
|
|
|
|
str = *((const char **)(((const char *) sec) + ie_type->offset));
|
|
|
|
if (req && !str) {
|
|
ast_log(LOG_WARNING, "Required IE '%d' (%s) for security event "
|
|
"type '%d' (%s) not present\n", ie_type->ie_type,
|
|
ast_event_get_ie_type_name(ie_type->ie_type),
|
|
sec->event_type, ast_security_event_get_name(sec->event_type));
|
|
res = -1;
|
|
break;
|
|
}
|
|
|
|
if (!str) {
|
|
break;
|
|
}
|
|
|
|
json_string = ast_json_string_create(str);
|
|
if (!json_string) {
|
|
res = -1;
|
|
break;
|
|
}
|
|
|
|
res = ast_json_object_set(json, ast_event_get_ie_type_name(ie_type->ie_type), json_string);
|
|
break;
|
|
}
|
|
case AST_EVENT_IE_EVENT_VERSION:
|
|
case AST_EVENT_IE_USING_PASSWORD:
|
|
{
|
|
struct ast_json *json_string;
|
|
uint32_t val;
|
|
val = *((const uint32_t *)(((const char *) sec) + ie_type->offset));
|
|
|
|
json_string = ast_json_stringf("%d", val);
|
|
if (!json_string) {
|
|
res = -1;
|
|
break;
|
|
}
|
|
|
|
res = ast_json_object_set(json, ast_event_get_ie_type_name(ie_type->ie_type), json_string);
|
|
break;
|
|
}
|
|
case AST_EVENT_IE_LOCAL_ADDR:
|
|
case AST_EVENT_IE_REMOTE_ADDR:
|
|
case AST_EVENT_IE_EXPECTED_ADDR:
|
|
{
|
|
const struct ast_security_event_ip_addr *addr;
|
|
|
|
addr = (const struct ast_security_event_ip_addr *)(((const char *) sec) + ie_type->offset);
|
|
|
|
if (req && !addr->addr) {
|
|
ast_log(LOG_WARNING, "Required IE '%d' (%s) for security event "
|
|
"type '%d' (%s) not present\n", ie_type->ie_type,
|
|
ast_event_get_ie_type_name(ie_type->ie_type),
|
|
sec->event_type, ast_security_event_get_name(sec->event_type));
|
|
res = -1;
|
|
}
|
|
|
|
if (addr->addr) {
|
|
res = add_ip_json_object(json, ie_type->ie_type, addr);
|
|
}
|
|
|
|
break;
|
|
}
|
|
case AST_EVENT_IE_SESSION_TV:
|
|
{
|
|
const struct timeval *tval;
|
|
|
|
tval = *((const struct timeval **)(((const char *) sec) + ie_type->offset));
|
|
|
|
if (req && !tval) {
|
|
ast_log(LOG_WARNING, "Required IE '%d' (%s) for security event "
|
|
"type '%d' (%s) not present\n", ie_type->ie_type,
|
|
ast_event_get_ie_type_name(ie_type->ie_type),
|
|
sec->event_type, ast_security_event_get_name(sec->event_type));
|
|
res = -1;
|
|
}
|
|
|
|
if (tval) {
|
|
struct ast_json *json_tval = ast_json_timeval(*tval, NULL);
|
|
if (!json_tval) {
|
|
res = -1;
|
|
break;
|
|
}
|
|
res = ast_json_object_set(json, ast_event_get_ie_type_name(ie_type->ie_type), json_tval);
|
|
}
|
|
|
|
break;
|
|
}
|
|
case AST_EVENT_IE_EVENT_TV:
|
|
case AST_EVENT_IE_SEVERITY:
|
|
/* Added automatically, nothing to do here. */
|
|
break;
|
|
default:
|
|
ast_log(LOG_WARNING, "Unhandled IE type '%d' (%s), this security event "
|
|
"will be missing data.\n", ie_type->ie_type,
|
|
ast_event_get_ie_type_name(ie_type->ie_type));
|
|
break;
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static struct ast_json *alloc_security_event_json_object(const struct ast_security_event_common *sec)
|
|
{
|
|
struct timeval tv = ast_tvnow();
|
|
const char *severity_str;
|
|
struct ast_json *json_temp;
|
|
RAII_VAR(struct ast_json *, json_object, ast_json_object_create(), ast_json_unref);
|
|
|
|
if (!json_object) {
|
|
return NULL;
|
|
}
|
|
|
|
/* NOTE: Every time ast_json_object_set is used, json_temp becomes a stale pointer since the reference is taken.
|
|
* This is true even if ast_json_object_set fails.
|
|
*/
|
|
|
|
json_temp = ast_json_integer_create(sec->event_type);
|
|
if (!json_temp || ast_json_object_set(json_object, "SecurityEvent", json_temp)) {
|
|
return NULL;
|
|
}
|
|
|
|
json_temp = ast_json_stringf("%d", sec->version);
|
|
if (!json_temp || ast_json_object_set(json_object, ast_event_get_ie_type_name(AST_EVENT_IE_EVENT_VERSION), json_temp)) {
|
|
return NULL;
|
|
}
|
|
|
|
/* AST_EVENT_IE_EVENT_TV */
|
|
json_temp = ast_json_timeval(tv, NULL);
|
|
if (!json_temp || ast_json_object_set(json_object, ast_event_get_ie_type_name(AST_EVENT_IE_EVENT_TV), json_temp)) {
|
|
return NULL;
|
|
}
|
|
|
|
/* AST_EVENT_IE_SERVICE */
|
|
json_temp = ast_json_string_create(sec->service);
|
|
if (!json_temp || ast_json_object_set(json_object, ast_event_get_ie_type_name(AST_EVENT_IE_SERVICE), json_temp)) {
|
|
return NULL;
|
|
}
|
|
|
|
/* AST_EVENT_IE_SEVERITY */
|
|
severity_str = S_OR(
|
|
ast_security_event_severity_get_name(sec_events[sec->event_type].severity),
|
|
"Unknown"
|
|
);
|
|
|
|
json_temp = ast_json_string_create(severity_str);
|
|
if (!json_temp || ast_json_object_set(json_object, ast_event_get_ie_type_name(AST_EVENT_IE_SEVERITY), json_temp)) {
|
|
return NULL;
|
|
}
|
|
|
|
return ast_json_ref(json_object);
|
|
}
|
|
|
|
static int handle_security_event(const struct ast_security_event_common *sec)
|
|
{
|
|
RAII_VAR(struct stasis_message *, msg, NULL, ao2_cleanup);
|
|
RAII_VAR(struct ast_json_payload *, json_payload, NULL, ao2_cleanup);
|
|
RAII_VAR(struct ast_json *, json_object, NULL, ast_json_unref);
|
|
|
|
const struct ast_security_event_ie_type *ies;
|
|
unsigned int i;
|
|
|
|
json_object = alloc_security_event_json_object(sec);
|
|
|
|
if (!json_object) {
|
|
return -1;
|
|
}
|
|
|
|
for (ies = ast_security_event_get_required_ies(sec->event_type), i = 0;
|
|
ies[i].ie_type != AST_EVENT_IE_END;
|
|
i++) {
|
|
if (add_json_object(json_object, sec, ies + i, REQUIRED)) {
|
|
goto return_error;
|
|
}
|
|
}
|
|
|
|
for (ies = ast_security_event_get_optional_ies(sec->event_type), i = 0;
|
|
ies[i].ie_type != AST_EVENT_IE_END;
|
|
i++) {
|
|
if (add_json_object(json_object, sec, ies + i, NOT_REQUIRED)) {
|
|
goto return_error;
|
|
}
|
|
}
|
|
|
|
/* The json blob is ready. Throw it in the payload and send it out over stasis. */
|
|
if (!(json_payload = ast_json_payload_create(json_object))) {
|
|
goto return_error;
|
|
}
|
|
|
|
msg = stasis_message_create(ast_security_event_type(), json_payload);
|
|
|
|
if (!msg) {
|
|
goto return_error;
|
|
}
|
|
|
|
stasis_publish(ast_security_topic(), msg);
|
|
|
|
return 0;
|
|
|
|
return_error:
|
|
return -1;
|
|
}
|
|
|
|
int ast_security_event_report(const struct ast_security_event_common *sec)
|
|
{
|
|
if (sec->event_type < 0 || sec->event_type >= AST_SECURITY_EVENT_NUM_TYPES) {
|
|
ast_log(LOG_ERROR, "Invalid security event type\n");
|
|
return -1;
|
|
}
|
|
|
|
if (!sec_events[sec->event_type].name) {
|
|
ast_log(LOG_WARNING, "Security event type %u not handled\n",
|
|
sec->event_type);
|
|
return -1;
|
|
}
|
|
|
|
if (sec->version != sec_events[sec->event_type].version) {
|
|
ast_log(LOG_WARNING, "Security event %u version mismatch\n",
|
|
sec->event_type);
|
|
return -1;
|
|
}
|
|
|
|
if (handle_security_event(sec)) {
|
|
ast_log(LOG_ERROR, "Failed to issue security event of type %s.\n",
|
|
ast_security_event_get_name(sec->event_type));
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
|