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209 lines
5.0 KiB
C
209 lines
5.0 KiB
C
8 years ago
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/* Copyright (C) 2017 Open Information Security Foundation
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*
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* You can copy, redistribute or modify this Program under the terms of
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* the GNU General Public License version 2 as published by the Free
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* Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* version 2 along with this program; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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* 02110-1301, USA.
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*/
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/**
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* \file
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*
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* \author Victor Julien <victor@inliniac.net>
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*
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* Implement JSON/eve logging app-layer SMB.
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*/
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#include "suricata-common.h"
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#include "debug.h"
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#include "pkt-var.h"
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#include "conf.h"
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#include "threads.h"
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#include "threadvars.h"
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#include "tm-threads.h"
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#include "util-unittest.h"
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#include "util-buffer.h"
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#include "util-debug.h"
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#include "util-byte.h"
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#include "output.h"
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#include "output-json.h"
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#include "app-layer.h"
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#include "app-layer-parser.h"
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#include "output-json-smb.h"
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#ifdef HAVE_RUST
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#ifdef HAVE_LIBJANSSON
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#include "rust.h"
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#include "rust-smb-log-gen.h"
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typedef struct LogSMBFileCtx_ {
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LogFileCtx *file_ctx;
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uint32_t flags;
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} LogSMBFileCtx;
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typedef struct LogSMBLogThread_ {
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LogSMBFileCtx *smblog_ctx;
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uint32_t count;
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MemBuffer *buffer;
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} LogSMBLogThread;
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json_t *JsonSMBAddMetadata(const Flow *f, uint64_t tx_id)
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{
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SMBState *state = FlowGetAppState(f);
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if (state) {
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SMBTransaction *tx = AppLayerParserGetTx(f->proto, ALPROTO_SMB, state, tx_id);
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if (tx) {
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return rs_smb_log_json_response(state, tx);
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}
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}
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return NULL;
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}
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static int JsonSMBLogger(ThreadVars *tv, void *thread_data,
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const Packet *p, Flow *f, void *state, void *tx, uint64_t tx_id)
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{
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//SMBTransaction *smbtx = tx;
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LogSMBLogThread *thread = thread_data;
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json_t *js, *smbjs;
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js = CreateJSONHeader((Packet *)p, 0, "smb");
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if (unlikely(js == NULL)) {
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return TM_ECODE_FAILED;
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}
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smbjs = rs_smb_log_json_response(state, tx);
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if (unlikely(smbjs == NULL)) {
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goto error;
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}
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json_object_set_new(js, "smb", smbjs);
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MemBufferReset(thread->buffer);
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OutputJSONBuffer(js, thread->smblog_ctx->file_ctx, &thread->buffer);
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json_decref(js);
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return TM_ECODE_OK;
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error:
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json_decref(js);
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return TM_ECODE_FAILED;
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}
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static void OutputSMBLogDeInitCtxSub(OutputCtx *output_ctx)
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{
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LogSMBFileCtx *smblog_ctx = (LogSMBFileCtx *)output_ctx->data;
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SCFree(smblog_ctx);
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SCFree(output_ctx);
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}
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static OutputInitResult OutputSMBLogInitSub(ConfNode *conf,
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OutputCtx *parent_ctx)
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{
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OutputInitResult result = { NULL, false };
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OutputJsonCtx *ajt = parent_ctx->data;
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LogSMBFileCtx *smblog_ctx = SCCalloc(1, sizeof(*smblog_ctx));
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if (unlikely(smblog_ctx == NULL)) {
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return result;
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}
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smblog_ctx->file_ctx = ajt->file_ctx;
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OutputCtx *output_ctx = SCCalloc(1, sizeof(*output_ctx));
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if (unlikely(output_ctx == NULL)) {
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SCFree(smblog_ctx);
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return result;
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}
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output_ctx->data = smblog_ctx;
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output_ctx->DeInit = OutputSMBLogDeInitCtxSub;
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SCLogDebug("SMB log sub-module initialized.");
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AppLayerParserRegisterLogger(IPPROTO_TCP, ALPROTO_SMB);
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AppLayerParserRegisterLogger(IPPROTO_UDP, ALPROTO_SMB);
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result.ctx = output_ctx;
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result.ok = true;
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return result;
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}
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#define OUTPUT_BUFFER_SIZE 65535
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static TmEcode JsonSMBLogThreadInit(ThreadVars *t, const void *initdata, void **data)
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{
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LogSMBLogThread *thread = SCCalloc(1, sizeof(*thread));
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if (unlikely(thread == NULL)) {
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return TM_ECODE_FAILED;
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}
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if (initdata == NULL) {
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SCLogDebug("Error getting context for EveLogSMB. \"initdata\" is NULL.");
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SCFree(thread);
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return TM_ECODE_FAILED;
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}
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thread->buffer = MemBufferCreateNew(OUTPUT_BUFFER_SIZE);
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if (unlikely(thread->buffer == NULL)) {
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SCFree(thread);
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return TM_ECODE_FAILED;
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}
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thread->smblog_ctx = ((OutputCtx *)initdata)->data;
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*data = (void *)thread;
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return TM_ECODE_OK;
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}
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static TmEcode JsonSMBLogThreadDeinit(ThreadVars *t, void *data)
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{
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LogSMBLogThread *thread = (LogSMBLogThread *)data;
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if (thread == NULL) {
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return TM_ECODE_OK;
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}
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if (thread->buffer != NULL) {
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MemBufferFree(thread->buffer);
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}
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SCFree(thread);
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return TM_ECODE_OK;
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}
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void JsonSMBLogRegister(void)
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{
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/* Register as an eve sub-module. */
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OutputRegisterTxSubModule(LOGGER_JSON_SMB, "eve-log", "JsonSMBLog",
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"eve-log.smb", OutputSMBLogInitSub, ALPROTO_SMB,
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JsonSMBLogger, JsonSMBLogThreadInit,
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JsonSMBLogThreadDeinit, NULL);
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SCLogDebug("SMB JSON logger registered.");
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}
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#else /* No JSON support. */
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void JsonSMBLogRegister(void)
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{
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}
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#endif /* HAVE_LIBJANSSON */
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#else /* no rust */
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void JsonSMBLogRegister(void)
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{
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}
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#endif /* HAVE_RUST */
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