648 lines
20 KiB
C
648 lines
20 KiB
C
/*
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* Asterisk -- An open source telephony toolkit.
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*
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* Copyright (C) 2009, 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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#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/security_events.h"
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static const size_t TIMESTAMP_STR_LEN = 32;
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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_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) },
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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_EXPECTED_ADDR, SEC_EVT_FIELD(unexpected_addr, expected_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_CHAL_RESP_FAILED] = {
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.name = "ChallengeResponseFailed",
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.version = AST_SECURITY_EVENT_CHAL_RESP_FAILED_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_CHALLENGE, SEC_EVT_FIELD(chal_resp_failed, challenge) },
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{ AST_EVENT_IE_RESPONSE, SEC_EVT_FIELD(chal_resp_failed, response) },
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{ AST_EVENT_IE_EXPECTED_RESPONSE, SEC_EVT_FIELD(chal_resp_failed, expected_response) },
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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_INVAL_PASSWORD] = {
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.name = "InvalidPassword",
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.version = AST_SECURITY_EVENT_INVAL_PASSWORD_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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#undef SEC_EVT_FIELD
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};
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static const struct {
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enum ast_security_event_severity severity;
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const char *str;
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} severities[] = {
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{ AST_SECURITY_EVENT_SEVERITY_INFO, "Informational" },
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{ AST_SECURITY_EVENT_SEVERITY_ERROR, "Error" },
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};
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const char *ast_security_event_severity_get_name(
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const enum ast_security_event_severity severity)
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{
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unsigned int i;
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for (i = 0; i < ARRAY_LEN(severities); i++) {
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if (severities[i].severity == severity) {
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return severities[i].str;
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}
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}
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return NULL;
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}
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static int check_event_type(const enum ast_security_event_type event_type)
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{
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if (event_type < 0 || event_type >= AST_SECURITY_EVENT_NUM_TYPES) {
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ast_log(LOG_ERROR, "Invalid security event type %u\n", 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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const char *ast_security_event_get_name(const enum ast_security_event_type event_type)
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{
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if (check_event_type(event_type)) {
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return NULL;
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}
|
|
|
|
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 void encode_timestamp(struct ast_str **str, const struct timeval *tv)
|
|
{
|
|
ast_str_set(str, 0, "%u-%u",
|
|
(unsigned int) tv->tv_sec,
|
|
(unsigned int) tv->tv_usec);
|
|
}
|
|
|
|
static struct ast_event *alloc_event(const struct ast_security_event_common *sec)
|
|
{
|
|
struct ast_str *str = ast_str_alloca(TIMESTAMP_STR_LEN);
|
|
struct timeval tv = ast_tvnow();
|
|
const char *severity_str;
|
|
|
|
if (check_event_type(sec->event_type)) {
|
|
return NULL;
|
|
}
|
|
|
|
encode_timestamp(&str, &tv);
|
|
|
|
severity_str = S_OR(
|
|
ast_security_event_severity_get_name(sec_events[sec->event_type].severity),
|
|
"Unknown"
|
|
);
|
|
|
|
return ast_event_new(AST_EVENT_SECURITY,
|
|
AST_EVENT_IE_SECURITY_EVENT, AST_EVENT_IE_PLTYPE_UINT, sec->event_type,
|
|
AST_EVENT_IE_EVENT_VERSION, AST_EVENT_IE_PLTYPE_UINT, sec->version,
|
|
AST_EVENT_IE_EVENT_TV, AST_EVENT_IE_PLTYPE_STR, str->str,
|
|
AST_EVENT_IE_SERVICE, AST_EVENT_IE_PLTYPE_STR, sec->service,
|
|
AST_EVENT_IE_SEVERITY, AST_EVENT_IE_PLTYPE_STR, severity_str,
|
|
AST_EVENT_IE_END);
|
|
}
|
|
|
|
static int add_timeval_ie(struct ast_event **event, enum ast_event_ie_type ie_type,
|
|
const struct timeval *tv)
|
|
{
|
|
struct ast_str *str = ast_str_alloca(TIMESTAMP_STR_LEN);
|
|
|
|
encode_timestamp(&str, tv);
|
|
|
|
return ast_event_append_ie_str(event, ie_type, ast_str_buffer(str));
|
|
}
|
|
|
|
static int add_ipv4_ie(struct ast_event **event, enum ast_event_ie_type ie_type,
|
|
const struct ast_security_event_ipv4_addr *addr)
|
|
{
|
|
struct ast_str *str = ast_str_alloca(64);
|
|
|
|
ast_str_set(&str, 0, "IPV4/");
|
|
|
|
switch (addr->transport) {
|
|
case AST_SECURITY_EVENT_TRANSPORT_UDP:
|
|
ast_str_append(&str, 0, "UDP/");
|
|
break;
|
|
case AST_SECURITY_EVENT_TRANSPORT_TCP:
|
|
ast_str_append(&str, 0, "TCP/");
|
|
break;
|
|
case AST_SECURITY_EVENT_TRANSPORT_TLS:
|
|
ast_str_append(&str, 0, "TLS/");
|
|
break;
|
|
}
|
|
|
|
ast_str_append(&str, 0, "%s/%hu",
|
|
ast_inet_ntoa(addr->sin->sin_addr),
|
|
ntohs(addr->sin->sin_port));
|
|
|
|
return ast_event_append_ie_str(event, ie_type, ast_str_buffer(str));
|
|
}
|
|
|
|
enum ie_required {
|
|
NOT_REQUIRED,
|
|
REQUIRED
|
|
};
|
|
|
|
static int add_ie(struct ast_event **event, 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:
|
|
{
|
|
const char *str;
|
|
|
|
str = *((const char **)(((const char *) sec) + ie_type->offset));
|
|
|
|
if (req && !str) {
|
|
ast_log(LOG_WARNING, "Required IE '%d' for security event "
|
|
"type '%d' not present\n", ie_type->ie_type,
|
|
sec->event_type);
|
|
res = -1;
|
|
}
|
|
|
|
if (str) {
|
|
res = ast_event_append_ie_str(event, ie_type->ie_type, str);
|
|
}
|
|
|
|
break;
|
|
}
|
|
case AST_EVENT_IE_EVENT_VERSION:
|
|
{
|
|
uint32_t val;
|
|
val = *((const uint32_t *)(((const char *) sec) + ie_type->offset));
|
|
res = ast_event_append_ie_uint(event, ie_type->ie_type, val);
|
|
break;
|
|
}
|
|
case AST_EVENT_IE_LOCAL_ADDR:
|
|
case AST_EVENT_IE_REMOTE_ADDR:
|
|
case AST_EVENT_IE_EXPECTED_ADDR:
|
|
{
|
|
const struct ast_security_event_ipv4_addr *addr;
|
|
|
|
addr = (const struct ast_security_event_ipv4_addr *)(((const char *) sec) + ie_type->offset);
|
|
|
|
if (req && !addr->sin) {
|
|
ast_log(LOG_WARNING, "Required IE '%d' for security event "
|
|
"type '%d' not present\n", ie_type->ie_type,
|
|
sec->event_type);
|
|
res = -1;
|
|
}
|
|
|
|
if (addr->sin) {
|
|
res = add_ipv4_ie(event, 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' for security event "
|
|
"type '%d' not present\n", ie_type->ie_type,
|
|
sec->event_type);
|
|
res = -1;
|
|
}
|
|
|
|
if (tval) {
|
|
add_timeval_ie(event, ie_type->ie_type, 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', this security event "
|
|
"will be missing data.\n", ie_type->ie_type);
|
|
break;
|
|
}
|
|
|
|
return res;
|
|
}
|
|
|
|
static int handle_security_event(const struct ast_security_event_common *sec)
|
|
{
|
|
struct ast_event *event;
|
|
const struct ast_security_event_ie_type *ies;
|
|
unsigned int i;
|
|
|
|
if (!(event = alloc_event(sec))) {
|
|
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_ie(&event, 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_ie(&event, sec, ies + i, NOT_REQUIRED)) {
|
|
goto return_error;
|
|
}
|
|
}
|
|
|
|
|
|
if (ast_event_queue(event)) {
|
|
goto return_error;
|
|
}
|
|
|
|
return 0;
|
|
|
|
return_error:
|
|
if (event) {
|
|
ast_event_destroy(event);
|
|
}
|
|
|
|
return -1;
|
|
}
|
|
|
|
int ast_security_event_report(const struct ast_security_event_common *sec)
|
|
{
|
|
int res;
|
|
|
|
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;
|
|
}
|
|
|
|
res = handle_security_event(sec);
|
|
|
|
return res;
|
|
}
|
|
|
|
|