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asterisk/main/security_events.c

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/*
* Asterisk -- An open source telephony toolkit.
*
* Copyright (C) 2009, Digium, Inc.
*
* Russell Bryant <russell@digium.com>
*
* See http://www.asterisk.org for more information about
* the Asterisk project. Please do not directly contact
* any of the maintainers of this project for assistance;
* the project provides a web site, mailing lists and IRC
* channels for your use.
*
* This program is free software, distributed under the terms of
* the GNU General Public License Version 2. See the LICENSE file
* at the top of the source tree.
*/
/*!
* \file
*
* \brief Security Event Reporting Helpers
*
* \author Russell Bryant <russell@digium.com>
*/
#include "asterisk.h"
ASTERISK_FILE_VERSION(__FILE__, "$Revision$")
#include "asterisk/utils.h"
#include "asterisk/strings.h"
#include "asterisk/network.h"
#include "asterisk/security_events.h"
static const size_t TIMESTAMP_STR_LEN = 32;
static const struct {
const char *name;
uint32_t version;
enum ast_security_event_severity severity;
#define MAX_SECURITY_IES 12
struct ast_security_event_ie_type required_ies[MAX_SECURITY_IES];
struct ast_security_event_ie_type optional_ies[MAX_SECURITY_IES];
#undef MAX_SECURITY_IES
} sec_events[AST_SECURITY_EVENT_NUM_TYPES] = {
#define SEC_EVT_FIELD(e, field) (offsetof(struct ast_security_event_##e, field))
[AST_SECURITY_EVENT_FAILED_ACL] = {
.name = "FailedACL",
.version = AST_SECURITY_EVENT_FAILED_ACL_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_ACL_NAME, SEC_EVT_FIELD(failed_acl, acl_name) },
{ AST_EVENT_IE_SESSION_TV, SEC_EVT_FIELD(common, session_tv) },
{ AST_EVENT_IE_END, 0 }
},
},
[AST_SECURITY_EVENT_INVAL_ACCT_ID] = {
.name = "InvalidAccountID",
.version = AST_SECURITY_EVENT_INVAL_ACCT_ID_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_END, 0 }
},
},
[AST_SECURITY_EVENT_SESSION_LIMIT] = {
.name = "SessionLimit",
.version = AST_SECURITY_EVENT_SESSION_LIMIT_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_END, 0 }
},
},
[AST_SECURITY_EVENT_MEM_LIMIT] = {
.name = "MemoryLimit",
.version = AST_SECURITY_EVENT_MEM_LIMIT_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_END, 0 }
},
},
[AST_SECURITY_EVENT_LOAD_AVG] = {
.name = "LoadAverageLimit",
.version = AST_SECURITY_EVENT_LOAD_AVG_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_END, 0 }
},
},
[AST_SECURITY_EVENT_REQ_NO_SUPPORT] = {
.name = "RequestNotSupported",
.version = AST_SECURITY_EVENT_REQ_NO_SUPPORT_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_REQUEST_TYPE, SEC_EVT_FIELD(req_no_support, request_type) },
{ 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_REQ_NOT_ALLOWED] = {
.name = "RequestNotAllowed",
.version = AST_SECURITY_EVENT_REQ_NOT_ALLOWED_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_REQUEST_TYPE, SEC_EVT_FIELD(req_not_allowed, request_type) },
{ 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_REQUEST_PARAMS, SEC_EVT_FIELD(req_not_allowed, request_params) },
{ AST_EVENT_IE_END, 0 }
},
},
[AST_SECURITY_EVENT_AUTH_METHOD_NOT_ALLOWED] = {
.name = "AuthMethodNotAllowed",
.version = AST_SECURITY_EVENT_AUTH_METHOD_NOT_ALLOWED_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_AUTH_METHOD, SEC_EVT_FIELD(auth_method_not_allowed, auth_method) },
{ 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_REQ_BAD_FORMAT] = {
.name = "RequestBadFormat",
.version = AST_SECURITY_EVENT_REQ_BAD_FORMAT_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_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_REQUEST_TYPE, SEC_EVT_FIELD(req_bad_format, request_type) },
{ 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_ACCOUNT_ID, SEC_EVT_FIELD(common, account_id) },
{ AST_EVENT_IE_REQUEST_PARAMS, SEC_EVT_FIELD(req_bad_format, request_params) },
{ AST_EVENT_IE_END, 0 }
},
},
[AST_SECURITY_EVENT_SUCCESSFUL_AUTH] = {
.name = "SuccessfulAuth",
.version = AST_SECURITY_EVENT_SUCCESSFUL_AUTH_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_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_UNEXPECTED_ADDR] = {
.name = "UnexpectedAddress",
.version = AST_SECURITY_EVENT_UNEXPECTED_ADDR_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_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_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 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;
}
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