Adding upstream version 1:7.0.3.upstream/1%7.0.3

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 194 insertions, 0 deletions

diff --git a/src/output-json-pgsql.c b/src/output-json-pgsql.c
new file mode 100644
index 0000000..d586a48
--- /dev/null
+++ b/src/output-json-pgsql.c
@@ -0,0 +1,194 @@
+/* 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.");
+}