suricata
output-json-krb5.c
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1 /* Copyright (C) 2018-2021 Open Information Security Foundation
2  *
3  * You can copy, redistribute or modify this Program under the terms of
4  * the GNU General Public License version 2 as published by the Free
5  * Software Foundation.
6  *
7  * This program is distributed in the hope that it will be useful,
8  * but WITHOUT ANY WARRANTY; without even the implied warranty of
9  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
10  * GNU General Public License for more details.
11  *
12  * You should have received a copy of the GNU General Public License
13  * version 2 along with this program; if not, write to the Free Software
14  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
15  * 02110-1301, USA.
16  */
17 
18 /**
19  * \file
20  *
21  * \author Pierre Chifflier <chifflier@wzdftpd.net>
22  *
23  * Implement JSON/eve logging app-layer KRB5.
24  */
25 
26 #include "suricata-common.h"
27 #include "detect.h"
28 #include "pkt-var.h"
29 #include "conf.h"
30 
31 #include "threads.h"
32 #include "threadvars.h"
33 #include "tm-threads.h"
34 
35 #include "util-unittest.h"
36 #include "util-buffer.h"
37 #include "util-debug.h"
38 #include "util-byte.h"
39 
40 #include "output.h"
41 #include "output-json.h"
42 
43 #include "app-layer.h"
44 #include "app-layer-parser.h"
45 
46 #include "app-layer-krb5.h"
47 #include "output-json-krb5.h"
48 
49 #include "rust.h"
50 
51 static int JsonKRB5Logger(ThreadVars *tv, void *thread_data,
52  const Packet *p, Flow *f, void *state, void *tx, uint64_t tx_id)
53 {
54  KRB5Transaction *krb5tx = tx;
55  OutputJsonThreadCtx *thread = thread_data;
56 
57  JsonBuilder *jb = CreateEveHeader(p, LOG_DIR_PACKET, "krb5", NULL, thread->ctx);
58  if (unlikely(jb == NULL)) {
59  return TM_ECODE_FAILED;
60  }
61 
62  jb_open_object(jb, "krb5");
63  if (!rs_krb5_log_json_response(jb, krb5tx)) {
64  goto error;
65  }
66  jb_close(jb);
67 
68  OutputJsonBuilderBuffer(jb, thread);
69 
70  jb_free(jb);
71  return TM_ECODE_OK;
72 
73 error:
74  jb_free(jb);
75  return TM_ECODE_FAILED;
76 }
77 
78 static OutputInitResult OutputKRB5LogInitSub(ConfNode *conf,
79  OutputCtx *parent_ctx)
80 {
83  return OutputJsonLogInitSub(conf, parent_ctx);
84 }
85 
87 {
88  /* Register as an eve sub-module. */
89  OutputRegisterTxSubModule(LOGGER_JSON_TX, "eve-log", "JsonKRB5Log", "eve-log.krb5",
90  OutputKRB5LogInitSub, ALPROTO_KRB5, JsonKRB5Logger, JsonLogThreadInit,
91  JsonLogThreadDeinit, NULL);
92 
93  SCLogDebug("KRB5 JSON logger registered.");
94 }
util-byte.h
tm-threads.h
OutputJsonLogInitSub
OutputInitResult OutputJsonLogInitSub(ConfNode *conf, OutputCtx *parent_ctx)
Definition: output-json-common.c:73
OutputJsonThreadCtx_::ctx
OutputJsonCtx * ctx
Definition: output-json.h:90
unlikely
#define unlikely(expr)
Definition: util-optimize.h:35
SCLogDebug
#define SCLogDebug(...)
Definition: util-debug.h:269
JsonLogThreadInit
TmEcode JsonLogThreadInit(ThreadVars *t, const void *initdata, void **data)
Definition: output-json-common.c:90
threads.h
Flow_
Flow data structure.
Definition: flow.h:347
OutputJsonBuilderBuffer
int OutputJsonBuilderBuffer(JsonBuilder *js, OutputJsonThreadCtx *ctx)
Definition: output-json.c:927
output-json-krb5.h
rust.h
TM_ECODE_FAILED
@ TM_ECODE_FAILED
Definition: tm-threads-common.h:85
util-unittest.h
TM_ECODE_OK
@ TM_ECODE_OK
Definition: tm-threads-common.h:84
ALPROTO_KRB5
@ ALPROTO_KRB5
Definition: app-layer-protos.h:50
OutputCtx_
Definition: tm-modules.h:84
OutputJsonThreadCtx_
Definition: output-json.h:89
app-layer-krb5.h
util-debug.h
output-json.h
AppLayerParserRegisterLogger
void AppLayerParserRegisterLogger(uint8_t ipproto, AppProto alproto)
Definition: app-layer-parser.c:477
CreateEveHeader
JsonBuilder * CreateEveHeader(const Packet *p, enum OutputJsonLogDirection dir, const char *event_type, JsonAddrInfo *addr, OutputJsonCtx *eve_ctx)
Definition: output-json.c:786
detect.h
ThreadVars_
Per thread variable structure.
Definition: threadvars.h:57
pkt-var.h
app-layer-parser.h
Packet_
Definition: decode.h:430
conf.h
OutputInitResult_
Definition: output.h:46
LOG_DIR_PACKET
@ LOG_DIR_PACKET
Definition: output-json.h:39
suricata-common.h
KRB5Transaction
struct KRB5Transaction_ KRB5Transaction
Definition: app-layer-krb5.h:32
OutputRegisterTxSubModule
void OutputRegisterTxSubModule(LoggerId id, const char *parent_name, const char *name, const char *conf_name, OutputInitSubFunc InitFunc, AppProto alproto, TxLogger TxLogFunc, ThreadInitFunc ThreadInit, ThreadDeinitFunc ThreadDeinit, ThreadExitPrintStatsFunc ThreadExitPrintStats)
Definition: output.c:411
tv
ThreadVars * tv
Definition: fuzz_decodepcapfile.c:32
threadvars.h
LOGGER_JSON_TX
@ LOGGER_JSON_TX
Definition: suricata-common.h:462
ConfNode_
Definition: conf.h:32
util-buffer.h
JsonLogThreadDeinit
TmEcode JsonLogThreadDeinit(ThreadVars *t, void *data)
Definition: output-json-common.c:123
JsonKRB5LogRegister
void JsonKRB5LogRegister(void)
Definition: output-json-krb5.c:86
output.h
app-layer.h