Added a hook to inject custom payloads with critical bit
This commit is contained in:
parent
ca93b54e65
commit
9b2ed9501f
|
@ -4,7 +4,8 @@ AM_CFLAGS = -rdynamic
|
|||
|
||||
conftest_SOURCES = conftest.c conftest.h config.c config.h actions.c actions.h \
|
||||
hooks/hook.h hooks/ike_auth_fill.c hooks/unsort_message.c \
|
||||
hooks/add_notify.c hooks/unencrypted_notify.c hooks/ignore_message.c
|
||||
hooks/add_notify.c hooks/unencrypted_notify.c hooks/ignore_message.c \
|
||||
hooks/add_payload.c
|
||||
|
||||
INCLUDES = \
|
||||
-I$(top_srcdir)/src/libstrongswan \
|
||||
|
|
|
@ -0,0 +1,128 @@
|
|||
/*
|
||||
* Copyright (C) 2010 Martin Willi
|
||||
* Copyright (C) 2010 revosec AG
|
||||
*
|
||||
* This program is free software; you can redistribute it and/or modify it
|
||||
* under the terms of the GNU General Public License as published by the
|
||||
* Free Software Foundation; either version 2 of the License, or (at your
|
||||
* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
|
||||
*
|
||||
* This program is distributed in the hope that it will be useful, but
|
||||
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
|
||||
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
||||
* for more details.
|
||||
*/
|
||||
|
||||
#include "hook.h"
|
||||
|
||||
#include <encoding/payloads/unknown_payload.h>
|
||||
|
||||
typedef struct private_add_payload_t private_add_payload_t;
|
||||
|
||||
/**
|
||||
* Private data of an add_payload_t object.
|
||||
*/
|
||||
struct private_add_payload_t {
|
||||
|
||||
/**
|
||||
* Implements the hook_t interface.
|
||||
*/
|
||||
hook_t hook;
|
||||
|
||||
/**
|
||||
* Alter requests or responses?
|
||||
*/
|
||||
bool req;
|
||||
|
||||
/**
|
||||
* ID of message to alter.
|
||||
*/
|
||||
int id;
|
||||
|
||||
/**
|
||||
* Payload type
|
||||
*/
|
||||
char *type;
|
||||
|
||||
/**
|
||||
* Payload data
|
||||
*/
|
||||
char *data;
|
||||
|
||||
/**
|
||||
* Set critical bit of the payload
|
||||
*/
|
||||
bool critical;
|
||||
};
|
||||
|
||||
METHOD(listener_t, message, bool,
|
||||
private_add_payload_t *this, ike_sa_t *ike_sa, message_t *message,
|
||||
bool incoming)
|
||||
{
|
||||
if (!incoming &&
|
||||
message->get_request(message) == this->req &&
|
||||
message->get_message_id(message) == this->id)
|
||||
{
|
||||
unknown_payload_t *payload;
|
||||
chunk_t data = chunk_empty;
|
||||
payload_type_t type;
|
||||
|
||||
type = atoi(this->type);
|
||||
if (!type)
|
||||
{
|
||||
type = enum_from_name(payload_type_short_names, this->type);
|
||||
if (type == -1)
|
||||
{
|
||||
DBG1(DBG_CFG, "unknown payload: '%s', skipped", this->type);
|
||||
return TRUE;
|
||||
}
|
||||
}
|
||||
if (strncasecmp(this->data, "0x", 2) == 0)
|
||||
{
|
||||
data = chunk_skip(chunk_create(this->data, strlen(this->data)), 2);
|
||||
data = chunk_from_hex(data, NULL);
|
||||
}
|
||||
else if (data.len)
|
||||
{
|
||||
data = chunk_clone(chunk_create(this->data, strlen(this->data)));
|
||||
}
|
||||
payload = unknown_payload_create_data(type, this->critical, data);
|
||||
message->add_payload(message, &payload->payload_interface);
|
||||
}
|
||||
return TRUE;
|
||||
}
|
||||
|
||||
METHOD(hook_t, destroy, void,
|
||||
private_add_payload_t *this)
|
||||
{
|
||||
free(this);
|
||||
}
|
||||
|
||||
/**
|
||||
* Create the IKE_AUTH fill hook
|
||||
*/
|
||||
hook_t *add_payload_hook_create(char *name)
|
||||
{
|
||||
private_add_payload_t *this;
|
||||
|
||||
INIT(this,
|
||||
.hook = {
|
||||
.listener = {
|
||||
.message = _message,
|
||||
},
|
||||
.destroy = _destroy,
|
||||
},
|
||||
.req = conftest->test->get_bool(conftest->test,
|
||||
"hooks.%s.request", TRUE, name),
|
||||
.id = conftest->test->get_int(conftest->test,
|
||||
"hooks.%s.id", 0, name),
|
||||
.type = conftest->test->get_str(conftest->test,
|
||||
"hooks.%s.type", "", name),
|
||||
.data = conftest->test->get_str(conftest->test,
|
||||
"hooks.%s.data", "", name),
|
||||
.critical = conftest->test->get_bool(conftest->test,
|
||||
"hooks.%s.critical", FALSE, name),
|
||||
);
|
||||
|
||||
return &this->hook;
|
||||
}
|
Loading…
Reference in New Issue