diff options
Diffstat (limited to 'framework/src/suricata/src/output-json-ssh.c')
| -rw-r--r-- | framework/src/suricata/src/output-json-ssh.c | 351 |
1 files changed, 0 insertions, 351 deletions
diff --git a/framework/src/suricata/src/output-json-ssh.c b/framework/src/suricata/src/output-json-ssh.c deleted file mode 100644 index 3dc4d10f..00000000 --- a/framework/src/suricata/src/output-json-ssh.c +++ /dev/null @@ -1,351 +0,0 @@ -/* Copyright (C) 2014 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 Victor Julien <victor@inliniac.net> - * - * Implements SSH JSON logging portion of the engine. - */ - -#include "suricata-common.h" -#include "debug.h" -#include "detect.h" -#include "pkt-var.h" -#include "conf.h" - -#include "threads.h" -#include "threadvars.h" -#include "tm-threads.h" - -#include "util-print.h" -#include "util-unittest.h" - -#include "util-debug.h" -#include "app-layer-parser.h" -#include "output.h" -#include "app-layer-ssh.h" -#include "app-layer.h" -#include "util-privs.h" -#include "util-buffer.h" - -#include "util-logopenfile.h" -#include "util-crypt.h" - -#include "output-json.h" - -#ifdef HAVE_LIBJANSSON -#include <jansson.h> - -#define MODULE_NAME "LogSshLog" - -typedef struct OutputSshCtx_ { - LogFileCtx *file_ctx; - uint32_t flags; /** Store mode */ -} OutputSshCtx; - - -typedef struct JsonSshLogThread_ { - OutputSshCtx *sshlog_ctx; - MemBuffer *buffer; -} JsonSshLogThread; - - -void JsonSshLogJSON(json_t *tjs, SshState *ssh_state) -{ - json_t *cjs = json_object(); - if (cjs != NULL) { - json_object_set_new(cjs, "proto_version", - json_string((char *)ssh_state->cli_hdr.proto_version)); - - json_object_set_new(cjs, "software_version", - json_string((char *)ssh_state->cli_hdr.software_version)); - } - json_object_set_new(tjs, "client", cjs); - - json_t *sjs = json_object(); - if (sjs != NULL) { - json_object_set_new(sjs, "proto_version", - json_string((char *)ssh_state->srv_hdr.proto_version)); - - json_object_set_new(sjs, "software_version", - json_string((char *)ssh_state->srv_hdr.software_version)); - } - json_object_set_new(tjs, "server", sjs); - -} - -static int JsonSshLogger(ThreadVars *tv, void *thread_data, const Packet *p) -{ - JsonSshLogThread *aft = (JsonSshLogThread *)thread_data; - MemBuffer *buffer = (MemBuffer *)aft->buffer; - OutputSshCtx *ssh_ctx = aft->sshlog_ctx; - - if (unlikely(p->flow == NULL)) { - return 0; - } - - /* check if we have SSH state or not */ - FLOWLOCK_WRLOCK(p->flow); - uint16_t proto = FlowGetAppProtocol(p->flow); - if (proto != ALPROTO_SSH) - goto end; - - SshState *ssh_state = (SshState *)FlowGetAppState(p->flow); - if (unlikely(ssh_state == NULL)) { - goto end; - } - - if (ssh_state->cli_hdr.software_version == NULL || ssh_state->srv_hdr.software_version == NULL) - goto end; - - json_t *js = CreateJSONHeader((Packet *)p, 1, "ssh");//TODO - if (unlikely(js == NULL)) - goto end; - - json_t *tjs = json_object(); - if (tjs == NULL) { - free(js); - goto end; - } - - /* reset */ - MemBufferReset(buffer); - - JsonSshLogJSON(tjs, ssh_state); - - json_object_set_new(js, "ssh", tjs); - - OutputJSONBuffer(js, ssh_ctx->file_ctx, buffer); - json_object_clear(js); - json_decref(js); - - /* we only log the state once */ - ssh_state->cli_hdr.flags |= SSH_FLAG_STATE_LOGGED; -end: - FLOWLOCK_UNLOCK(p->flow); - return 0; -} - -#define OUTPUT_BUFFER_SIZE 65535 -static TmEcode JsonSshLogThreadInit(ThreadVars *t, void *initdata, void **data) -{ - JsonSshLogThread *aft = SCMalloc(sizeof(JsonSshLogThread)); - if (unlikely(aft == NULL)) - return TM_ECODE_FAILED; - memset(aft, 0, sizeof(JsonSshLogThread)); - - if(initdata == NULL) - { - SCLogDebug("Error getting context for HTTPLog. \"initdata\" argument NULL"); - SCFree(aft); - return TM_ECODE_FAILED; - } - - /* Use the Ouptut Context (file pointer and mutex) */ - aft->sshlog_ctx = ((OutputCtx *)initdata)->data; - - aft->buffer = MemBufferCreateNew(OUTPUT_BUFFER_SIZE); - if (aft->buffer == NULL) { - SCFree(aft); - return TM_ECODE_FAILED; - } - - *data = (void *)aft; - return TM_ECODE_OK; -} - -static TmEcode JsonSshLogThreadDeinit(ThreadVars *t, void *data) -{ - JsonSshLogThread *aft = (JsonSshLogThread *)data; - if (aft == NULL) { - return TM_ECODE_OK; - } - - MemBufferFree(aft->buffer); - /* clear memory */ - memset(aft, 0, sizeof(JsonSshLogThread)); - - SCFree(aft); - return TM_ECODE_OK; -} - -static void OutputSshLogDeinit(OutputCtx *output_ctx) -{ - OutputSshLoggerDisable(); - - OutputSshCtx *ssh_ctx = output_ctx->data; - LogFileCtx *logfile_ctx = ssh_ctx->file_ctx; - LogFileFreeCtx(logfile_ctx); - SCFree(ssh_ctx); - SCFree(output_ctx); -} - -#define DEFAULT_LOG_FILENAME "ssh.json" -OutputCtx *OutputSshLogInit(ConfNode *conf) -{ - if (OutputSshLoggerEnable() != 0) { - SCLogError(SC_ERR_CONF_YAML_ERROR, "only one 'ssh' logger " - "can be enabled"); - return NULL; - } - - LogFileCtx *file_ctx = LogFileNewCtx(); - if(file_ctx == NULL) { - SCLogError(SC_ERR_HTTP_LOG_GENERIC, "couldn't create new file_ctx"); - return NULL; - } - - if (SCConfLogOpenGeneric(conf, file_ctx, DEFAULT_LOG_FILENAME, 1) < 0) { - LogFileFreeCtx(file_ctx); - return NULL; - } - - OutputSshCtx *ssh_ctx = SCMalloc(sizeof(OutputSshCtx)); - if (unlikely(ssh_ctx == NULL)) { - LogFileFreeCtx(file_ctx); - return NULL; - } - - OutputCtx *output_ctx = SCCalloc(1, sizeof(OutputCtx)); - if (unlikely(output_ctx == NULL)) { - LogFileFreeCtx(file_ctx); - SCFree(ssh_ctx); - return NULL; - } - - ssh_ctx->file_ctx = file_ctx; - - output_ctx->data = ssh_ctx; - output_ctx->DeInit = OutputSshLogDeinit; - - return output_ctx; -} - -static void OutputSshLogDeinitSub(OutputCtx *output_ctx) -{ - OutputSshLoggerDisable(); - - OutputSshCtx *ssh_ctx = output_ctx->data; - SCFree(ssh_ctx); - SCFree(output_ctx); -} - -OutputCtx *OutputSshLogInitSub(ConfNode *conf, OutputCtx *parent_ctx) -{ - OutputJsonCtx *ojc = parent_ctx->data; - - if (OutputSshLoggerEnable() != 0) { - SCLogError(SC_ERR_CONF_YAML_ERROR, "only one 'ssh' logger " - "can be enabled"); - return NULL; - } - - OutputSshCtx *ssh_ctx = SCMalloc(sizeof(OutputSshCtx)); - if (unlikely(ssh_ctx == NULL)) - return NULL; - - OutputCtx *output_ctx = SCCalloc(1, sizeof(OutputCtx)); - if (unlikely(output_ctx == NULL)) { - SCFree(ssh_ctx); - return NULL; - } - - ssh_ctx->file_ctx = ojc->file_ctx; - - output_ctx->data = ssh_ctx; - output_ctx->DeInit = OutputSshLogDeinitSub; - - return output_ctx; -} - -/** \internal - * \brief Condition function for SSH logger - * \retval bool true or false -- log now? - */ -static int JsonSshCondition(ThreadVars *tv, const Packet *p) -{ - if (p->flow == NULL) { - return FALSE; - } - - if (!(PKT_IS_TCP(p))) { - return FALSE; - } - - FLOWLOCK_RDLOCK(p->flow); - uint16_t proto = FlowGetAppProtocol(p->flow); - if (proto != ALPROTO_SSH) - goto dontlog; - - SshState *ssh_state = (SshState *)FlowGetAppState(p->flow); - if (ssh_state == NULL) { - SCLogDebug("no ssh state, so no logging"); - goto dontlog; - } - - /* we only log the state once */ - if (ssh_state->cli_hdr.flags & SSH_FLAG_STATE_LOGGED) - goto dontlog; - - if (ssh_state->cli_hdr.software_version == NULL || - ssh_state->srv_hdr.software_version == NULL) - goto dontlog; - - /* todo: logic to log once */ - - FLOWLOCK_UNLOCK(p->flow); - return TRUE; -dontlog: - FLOWLOCK_UNLOCK(p->flow); - return FALSE; -} - -void TmModuleJsonSshLogRegister (void) -{ - tmm_modules[TMM_JSONSSHLOG].name = "JsonSshLog"; - tmm_modules[TMM_JSONSSHLOG].ThreadInit = JsonSshLogThreadInit; - tmm_modules[TMM_JSONSSHLOG].ThreadDeinit = JsonSshLogThreadDeinit; - tmm_modules[TMM_JSONSSHLOG].RegisterTests = NULL; - tmm_modules[TMM_JSONSSHLOG].cap_flags = 0; - tmm_modules[TMM_JSONSSHLOG].flags = TM_FLAG_LOGAPI_TM; - - /* register as separate module */ - OutputRegisterPacketModule("JsonSshLog", "ssh-json-log", OutputSshLogInit, - JsonSshLogger, JsonSshCondition); - - /* also register as child of eve-log */ - OutputRegisterPacketSubModule("eve-log", "JsonSshLog", "eve-log.ssh", OutputSshLogInitSub, - JsonSshLogger, JsonSshCondition); -} - -#else - -static TmEcode OutputJsonThreadInit(ThreadVars *t, void *initdata, void **data) -{ - SCLogInfo("Can't init JSON output - JSON support was disabled during build."); - return TM_ECODE_FAILED; -} - -void TmModuleJsonSshLogRegister (void) -{ - tmm_modules[TMM_JSONSSHLOG].name = "JsonSshLog"; - tmm_modules[TMM_JSONSSHLOG].ThreadInit = OutputJsonThreadInit; -} - -#endif |