1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
|
/* Copyright (C) 2022 Open Information Security Foundation
*
* You can copy, redistribute or modify this Program under the terms of
* the GNU General Public License version 2 as published by the Free
* Software Foundation.
*
* 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.
*
* You should have received a copy of the GNU General Public License
* version 2 along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
* 02110-1301, USA.
*/
/**
* \file
*
* \author Juliana Fajardini <jufajardini@oisf.net>
*
* Implement JSON/eve logging for app-layer Pgsql.
*/
#include "suricata-common.h"
#include "detect.h"
#include "pkt-var.h"
#include "conf.h"
#include "threads.h"
#include "threadvars.h"
#include "tm-threads.h"
#include "util-unittest.h"
#include "util-buffer.h"
#include "util-debug.h"
#include "util-byte.h"
#include "output.h"
#include "output-json.h"
#include "app-layer.h"
#include "app-layer-parser.h"
#include "output-json-pgsql.h"
#include "rust.h"
#define PGSQL_LOG_PASSWORDS BIT_U32(0)
typedef struct OutputPgsqlCtx_ {
uint32_t flags;
OutputJsonCtx *eve_ctx;
} OutputPgsqlCtx;
typedef struct LogPgsqlLogThread_ {
OutputPgsqlCtx *pgsqllog_ctx;
OutputJsonThreadCtx *ctx;
} LogPgsqlLogThread;
static int JsonPgsqlLogger(ThreadVars *tv, void *thread_data, const Packet *p, Flow *f, void *state,
void *txptr, uint64_t tx_id)
{
LogPgsqlLogThread *thread = thread_data;
SCLogDebug("Logging pgsql transaction %" PRIu64 ".", tx_id);
JsonBuilder *jb =
CreateEveHeader(p, LOG_DIR_FLOW, "pgsql", NULL, thread->pgsqllog_ctx->eve_ctx);
if (unlikely(jb == NULL)) {
return TM_ECODE_FAILED;
}
jb_open_object(jb, "pgsql");
if (!rs_pgsql_logger(txptr, thread->pgsqllog_ctx->flags, jb)) {
goto error;
}
jb_close(jb);
OutputJsonBuilderBuffer(jb, thread->ctx);
jb_free(jb);
return TM_ECODE_OK;
error:
jb_free(jb);
return TM_ECODE_FAILED;
}
static void OutputPgsqlLogDeInitCtxSub(OutputCtx *output_ctx)
{
OutputPgsqlCtx *pgsqllog_ctx = (OutputPgsqlCtx *)output_ctx->data;
SCFree(pgsqllog_ctx);
SCFree(output_ctx);
}
static void JsonPgsqlLogParseConfig(ConfNode *conf, OutputPgsqlCtx *pgsqllog_ctx)
{
pgsqllog_ctx->flags = ~0U;
const char *query = ConfNodeLookupChildValue(conf, "passwords");
if (query != NULL) {
if (ConfValIsTrue(query)) {
pgsqllog_ctx->flags |= PGSQL_LOG_PASSWORDS;
} else {
pgsqllog_ctx->flags &= ~PGSQL_LOG_PASSWORDS;
}
} else {
pgsqllog_ctx->flags &= ~PGSQL_LOG_PASSWORDS;
}
}
static OutputInitResult OutputPgsqlLogInitSub(ConfNode *conf, OutputCtx *parent_ctx)
{
OutputInitResult result = { NULL, false };
OutputJsonCtx *ojc = parent_ctx->data;
OutputPgsqlCtx *pgsql_ctx = SCMalloc(sizeof(OutputPgsqlCtx));
if (unlikely(pgsql_ctx == NULL))
return result;
OutputCtx *output_ctx = SCCalloc(1, sizeof(OutputCtx));
if (unlikely(output_ctx == NULL)) {
SCFree(pgsql_ctx);
return result;
}
pgsql_ctx->eve_ctx = ojc;
output_ctx->data = pgsql_ctx;
output_ctx->DeInit = OutputPgsqlLogDeInitCtxSub;
JsonPgsqlLogParseConfig(conf, pgsql_ctx);
AppLayerParserRegisterLogger(IPPROTO_TCP, ALPROTO_PGSQL);
SCLogDebug("PostgreSQL log sub-module initialized.");
result.ctx = output_ctx;
result.ok = true;
return result;
}
static TmEcode JsonPgsqlLogThreadInit(ThreadVars *t, const void *initdata, void **data)
{
LogPgsqlLogThread *thread = SCCalloc(1, sizeof(LogPgsqlLogThread));
if (unlikely(thread == NULL)) {
return TM_ECODE_FAILED;
}
if (initdata == NULL) {
SCLogDebug("Error getting context for EveLogPgsql. \"initdata\" is NULL.");
goto error_exit;
}
thread->pgsqllog_ctx = ((OutputCtx *)initdata)->data;
thread->ctx = CreateEveThreadCtx(t, thread->pgsqllog_ctx->eve_ctx);
if (!thread->ctx) {
goto error_exit;
}
*data = (void *)thread;
return TM_ECODE_OK;
error_exit:
SCFree(thread);
return TM_ECODE_FAILED;
}
static TmEcode JsonPgsqlLogThreadDeinit(ThreadVars *t, void *data)
{
LogPgsqlLogThread *thread = (LogPgsqlLogThread *)data;
if (thread == NULL) {
return TM_ECODE_OK;
}
FreeEveThreadCtx(thread->ctx);
SCFree(thread);
return TM_ECODE_OK;
}
void JsonPgsqlLogRegister(void)
{
/* PGSQL_START_REMOVE */
if (ConfGetNode("app-layer.protocols.pgsql") == NULL) {
SCLogDebug("Disabling Pgsql eve-logger");
return;
}
/* PGSQL_END_REMOVE */
/* Register as an eve sub-module. */
OutputRegisterTxSubModule(LOGGER_JSON_TX, "eve-log", "JsonPgsqlLog", "eve-log.pgsql",
OutputPgsqlLogInitSub, ALPROTO_PGSQL, JsonPgsqlLogger, JsonPgsqlLogThreadInit,
JsonPgsqlLogThreadDeinit, NULL);
SCLogDebug("PostgreSQL JSON logger registered.");
}
|
