aboutsummaryrefslogtreecommitdiffstats
path: root/framework/src/suricata/src/detect-filename.c
diff options
context:
space:
mode:
Diffstat (limited to 'framework/src/suricata/src/detect-filename.c')
-rw-r--r--framework/src/suricata/src/detect-filename.c321
1 files changed, 0 insertions, 321 deletions
diff --git a/framework/src/suricata/src/detect-filename.c b/framework/src/suricata/src/detect-filename.c
deleted file mode 100644
index 8e5ddc1c..00000000
--- a/framework/src/suricata/src/detect-filename.c
+++ /dev/null
@@ -1,321 +0,0 @@
-/* Copyright (C) 2007-2014 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>
- * \author Pablo Rincon <pablo.rincon.crespo@gmail.com>
- *
- */
-
-#include "suricata-common.h"
-#include "threads.h"
-#include "debug.h"
-#include "decode.h"
-
-#include "detect.h"
-#include "detect-parse.h"
-
-#include "detect-engine.h"
-#include "detect-engine-mpm.h"
-#include "detect-engine-state.h"
-
-#include "flow.h"
-#include "flow-var.h"
-#include "flow-util.h"
-
-#include "util-debug.h"
-#include "util-spm-bm.h"
-#include "util-unittest.h"
-#include "util-unittest-helper.h"
-
-#include "app-layer.h"
-
-#include "stream-tcp.h"
-
-#include "detect-filename.h"
-
-static int DetectFilenameMatch (ThreadVars *, DetectEngineThreadCtx *, Flow *,
- uint8_t, File *, Signature *, SigMatch *);
-static int DetectFilenameSetup (DetectEngineCtx *, Signature *, char *);
-static void DetectFilenameRegisterTests(void);
-static void DetectFilenameFree(void *);
-
-/**
- * \brief Registration function for keyword: filename
- */
-void DetectFilenameRegister(void)
-{
- sigmatch_table[DETECT_FILENAME].name = "filename";
- sigmatch_table[DETECT_FILENAME].desc = "match on the file name";
- sigmatch_table[DETECT_FILENAME].url = "https://redmine.openinfosecfoundation.org/projects/suricata/wiki/File-keywords#filename";
- sigmatch_table[DETECT_FILENAME].FileMatch = DetectFilenameMatch;
- sigmatch_table[DETECT_FILENAME].alproto = ALPROTO_HTTP;
- sigmatch_table[DETECT_FILENAME].Setup = DetectFilenameSetup;
- sigmatch_table[DETECT_FILENAME].Free = DetectFilenameFree;
- sigmatch_table[DETECT_FILENAME].RegisterTests = DetectFilenameRegisterTests;
-
- SCLogDebug("registering filename rule option");
- return;
-}
-
-/**
- * \brief match the specified filename
- *
- * \param t thread local vars
- * \param det_ctx pattern matcher thread local data
- * \param f *LOCKED* flow
- * \param flags direction flags
- * \param file file being inspected
- * \param s signature being inspected
- * \param m sigmatch that we will cast into DetectFilenameData
- *
- * \retval 0 no match
- * \retval 1 match
- */
-static int DetectFilenameMatch (ThreadVars *t, DetectEngineThreadCtx *det_ctx,
- Flow *f, uint8_t flags, File *file, Signature *s, SigMatch *m)
-{
- SCEnter();
- int ret = 0;
-
- DetectFilenameData *filename = (DetectFilenameData *)m->ctx;
-
- if (file->name == NULL)
- SCReturnInt(0);
-
- if (file->txid < det_ctx->tx_id)
- SCReturnInt(0);
-
- if (file->txid > det_ctx->tx_id)
- SCReturnInt(0);
-
- if (BoyerMooreNocase(filename->name, filename->len, file->name,
- file->name_len, filename->bm_ctx) != NULL)
- {
-#ifdef DEBUG
- if (SCLogDebugEnabled()) {
- char *name = SCMalloc(filename->len + 1);
- if (name != NULL) {
- memcpy(name, filename->name, filename->len);
- name[filename->len] = '\0';
- SCLogDebug("will look for filename %s", name);
- }
- }
-#endif
-
- if (!(filename->flags & DETECT_CONTENT_NEGATED)) {
- ret = 1;
- }
- }
-
- if (ret == 0 && (filename->flags & DETECT_CONTENT_NEGATED)) {
- SCLogDebug("negated match");
- ret = 1;
- }
-
- SCReturnInt(ret);
-}
-
-/**
- * \brief Parse the filename keyword
- *
- * \param idstr Pointer to the user provided option
- *
- * \retval filename pointer to DetectFilenameData on success
- * \retval NULL on failure
- */
-static DetectFilenameData *DetectFilenameParse (char *str)
-{
- DetectFilenameData *filename = NULL;
-
- /* We have a correct filename option */
- filename = SCMalloc(sizeof(DetectFilenameData));
- if (unlikely(filename == NULL))
- goto error;
-
- memset(filename, 0x00, sizeof(DetectFilenameData));
-
- if (DetectContentDataParse ("filename", str, &filename->name, &filename->len, &filename->flags) == -1) {
- goto error;
- }
-
- filename->bm_ctx = BoyerMooreNocaseCtxInit(filename->name, filename->len);
- if (filename->bm_ctx == NULL) {
- goto error;
- }
-
- SCLogDebug("flags %02X", filename->flags);
- if (filename->flags & DETECT_CONTENT_NEGATED) {
- SCLogDebug("negated filename");
- }
-
-#ifdef DEBUG
- if (SCLogDebugEnabled()) {
- char *name = SCMalloc(filename->len + 1);
- if (name != NULL) {
- memcpy(name, filename->name, filename->len);
- name[filename->len] = '\0';
- SCLogDebug("will look for filename %s", name);
- }
- }
-#endif
-
- return filename;
-
-error:
- if (filename != NULL)
- DetectFilenameFree(filename);
- return NULL;
-}
-
-/**
- * \brief this function is used to parse filename options
- * \brief into the current signature
- *
- * \param de_ctx pointer to the Detection Engine Context
- * \param s pointer to the Current Signature
- * \param str pointer to the user provided "filename" option
- *
- * \retval 0 on Success
- * \retval -1 on Failure
- */
-static int DetectFilenameSetup (DetectEngineCtx *de_ctx, Signature *s, char *str)
-{
- DetectFilenameData *filename = NULL;
- SigMatch *sm = NULL;
-
- filename = DetectFilenameParse(str);
- if (filename == NULL)
- goto error;
-
- /* Okay so far so good, lets get this into a SigMatch
- * and put it in the Signature. */
- sm = SigMatchAlloc();
- if (sm == NULL)
- goto error;
-
- sm->type = DETECT_FILENAME;
- sm->ctx = (void *)filename;
-
- SigMatchAppendSMToList(s, sm, DETECT_SM_LIST_FILEMATCH);
-
- if (s->alproto != ALPROTO_HTTP && s->alproto != ALPROTO_SMTP) {
- SCLogError(SC_ERR_CONFLICTING_RULE_KEYWORDS, "rule contains conflicting keywords.");
- goto error;
- }
-
- if (s->alproto == ALPROTO_HTTP) {
- AppLayerHtpNeedFileInspection();
- }
-
- s->file_flags |= (FILE_SIG_NEED_FILE|FILE_SIG_NEED_FILENAME);
- return 0;
-
-error:
- if (filename != NULL)
- DetectFilenameFree(filename);
- if (sm != NULL)
- SCFree(sm);
- return -1;
-}
-
-/**
- * \brief this function will free memory associated with DetectFilenameData
- *
- * \param filename pointer to DetectFilenameData
- */
-static void DetectFilenameFree(void *ptr)
-{
- if (ptr != NULL) {
- DetectFilenameData *filename = (DetectFilenameData *)ptr;
- if (filename->bm_ctx != NULL) {
- BoyerMooreCtxDeInit(filename->bm_ctx);
- }
- if (filename->name != NULL)
- SCFree(filename->name);
- SCFree(filename);
- }
-}
-
-#ifdef UNITTESTS /* UNITTESTS */
-
-/**
- * \test DetectFilenameTestParse01
- */
-int DetectFilenameTestParse01 (void)
-{
- DetectFilenameData *dnd = DetectFilenameParse("\"secret.pdf\"");
- if (dnd != NULL) {
- DetectFilenameFree(dnd);
- return 1;
- }
- return 0;
-}
-
-/**
- * \test DetectFilenameTestParse02
- */
-int DetectFilenameTestParse02 (void)
-{
- int result = 0;
-
- DetectFilenameData *dnd = DetectFilenameParse("\"backup.tar.gz\"");
- if (dnd != NULL) {
- if (dnd->len == 13 && memcmp(dnd->name, "backup.tar.gz", 13) == 0) {
- result = 1;
- }
-
- DetectFilenameFree(dnd);
- return result;
- }
- return 0;
-}
-
-/**
- * \test DetectFilenameTestParse03
- */
-int DetectFilenameTestParse03 (void)
-{
- int result = 0;
-
- DetectFilenameData *dnd = DetectFilenameParse("\"cmd.exe\"");
- if (dnd != NULL) {
- if (dnd->len == 7 && memcmp(dnd->name, "cmd.exe", 7) == 0) {
- result = 1;
- }
-
- DetectFilenameFree(dnd);
- return result;
- }
- return 0;
-}
-
-#endif /* UNITTESTS */
-
-/**
- * \brief this function registers unit tests for DetectFilename
- */
-void DetectFilenameRegisterTests(void)
-{
-#ifdef UNITTESTS /* UNITTESTS */
- UtRegisterTest("DetectFilenameTestParse01", DetectFilenameTestParse01, 1);
- UtRegisterTest("DetectFilenameTestParse02", DetectFilenameTestParse02, 1);
- UtRegisterTest("DetectFilenameTestParse03", DetectFilenameTestParse03, 1);
-#endif /* UNITTESTS */
-}