aboutsummaryrefslogtreecommitdiffstats
path: root/framework/src/suricata/src/detect-fileext.c
diff options
context:
space:
mode:
Diffstat (limited to 'framework/src/suricata/src/detect-fileext.c')
-rw-r--r--framework/src/suricata/src/detect-fileext.c315
1 files changed, 0 insertions, 315 deletions
diff --git a/framework/src/suricata/src/detect-fileext.c b/framework/src/suricata/src/detect-fileext.c
deleted file mode 100644
index 7b5e9103..00000000
--- a/framework/src/suricata/src/detect-fileext.c
+++ /dev/null
@@ -1,315 +0,0 @@
-/* Copyright (C) 2007-2012 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-unittest.h"
-#include "util-unittest-helper.h"
-#include "util-spm-bm.h"
-#include "util-print.h"
-#include "util-memcmp.h"
-
-#include "app-layer.h"
-
-#include "stream-tcp.h"
-#include "detect-fileext.h"
-
-static int DetectFileextMatch (ThreadVars *, DetectEngineThreadCtx *, Flow *,
- uint8_t, File *, Signature *, SigMatch *);
-static int DetectFileextSetup (DetectEngineCtx *, Signature *, char *);
-static void DetectFileextRegisterTests(void);
-static void DetectFileextFree(void *);
-
-/**
- * \brief Registration function for keyword: fileext
- */
-void DetectFileextRegister(void)
-{
- sigmatch_table[DETECT_FILEEXT].name = "fileext";
- sigmatch_table[DETECT_FILEEXT].desc = "match on the extension of a file name";
- sigmatch_table[DETECT_FILEEXT].url = "https://redmine.openinfosecfoundation.org/projects/suricata/wiki/File-keywords#fileext";
- sigmatch_table[DETECT_FILEEXT].FileMatch = DetectFileextMatch;
- sigmatch_table[DETECT_FILEEXT].alproto = ALPROTO_HTTP;
- sigmatch_table[DETECT_FILEEXT].Setup = DetectFileextSetup;
- sigmatch_table[DETECT_FILEEXT].Free = DetectFileextFree;
- sigmatch_table[DETECT_FILEEXT].RegisterTests = DetectFileextRegisterTests;
-
- SCLogDebug("registering fileext rule option");
- return;
-}
-
-/**
- * \brief match the specified file extension
- *
- * \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 DetectFileextData
- *
- * \retval 0 no match
- * \retval 1 match
- */
-static int DetectFileextMatch (ThreadVars *t, DetectEngineThreadCtx *det_ctx,
- Flow *f, uint8_t flags, File *file, Signature *s, SigMatch *m)
-{
- SCEnter();
- int ret = 0;
-
- DetectFileextData *fileext = (DetectFileextData *)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 (file->name_len <= fileext->len)
- SCReturnInt(0);
-
- int offset = file->name_len - fileext->len;
-
- /* fileext->ext is already in lowercase, as SCMemcmpLowercase requires */
- if (file->name[offset - 1] == '.' &&
- SCMemcmpLowercase(fileext->ext, file->name + offset, fileext->len) == 0)
- {
- if (!(fileext->flags & DETECT_CONTENT_NEGATED)) {
- ret = 1;
- SCLogDebug("File ext found");
- }
- }
-
- if (ret == 0 && (fileext->flags & DETECT_CONTENT_NEGATED)) {
- SCLogDebug("negated match");
- ret = 1;
- }
-
- SCReturnInt(ret);
-}
-
-/**
- * \brief This function is used to parse fileet
- *
- * \param str Pointer to the fileext value string
- *
- * \retval pointer to DetectFileextData on success
- * \retval NULL on failure
- */
-static DetectFileextData *DetectFileextParse (char *str)
-{
- DetectFileextData *fileext = NULL;
-
- /* We have a correct filename option */
- fileext = SCMalloc(sizeof(DetectFileextData));
- if (unlikely(fileext == NULL))
- goto error;
-
- memset(fileext, 0x00, sizeof(DetectFileextData));
-
- if (DetectContentDataParse("fileext", str, &fileext->ext, &fileext->len, &fileext->flags) == -1) {
- goto error;
- }
- uint16_t u;
- for (u = 0; u < fileext->len; u++)
- fileext->ext[u] = tolower(fileext->ext[u]);
-
- SCLogDebug("flags %02X", fileext->flags);
- if (fileext->flags & DETECT_CONTENT_NEGATED) {
- SCLogDebug("negated fileext");
- }
-
-#ifdef DEBUG
- if (SCLogDebugEnabled()) {
- char *ext = SCMalloc(fileext->len + 1);
- if (ext != NULL) {
- memcpy(ext, fileext->ext, fileext->len);
- ext[fileext->len] = '\0';
- SCLogDebug("will look for fileext %s", ext);
- }
- }
-#endif
-
- return fileext;
-
-error:
- if (fileext != NULL)
- DetectFileextFree(fileext);
- return NULL;
-
-}
-
-/**
- * \brief this function is used to add the parsed "id" option
- * into the current signature
- *
- * \param de_ctx pointer to the Detection Engine Context
- * \param s pointer to the Current Signature
- * \param idstr pointer to the user provided "id" option
- *
- * \retval 0 on Success
- * \retval -1 on Failure
- */
-static int DetectFileextSetup (DetectEngineCtx *de_ctx, Signature *s, char *str)
-{
- DetectFileextData *fileext= NULL;
- SigMatch *sm = NULL;
-
- fileext = DetectFileextParse(str);
- if (fileext == 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_FILEEXT;
- sm->ctx = (void *)fileext;
-
- 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 (fileext != NULL)
- DetectFileextFree(fileext);
- if (sm != NULL)
- SCFree(sm);
- return -1;
-
-}
-
-/**
- * \brief this function will free memory associated with DetectFileextData
- *
- * \param fileext pointer to DetectFileextData
- */
-static void DetectFileextFree(void *ptr)
-{
- if (ptr != NULL) {
- DetectFileextData *fileext = (DetectFileextData *)ptr;
- if (fileext->ext != NULL)
- SCFree(fileext->ext);
- SCFree(fileext);
- }
-}
-
-#ifdef UNITTESTS /* UNITTESTS */
-
-/**
- * \test DetectFileextTestParse01
- */
-int DetectFileextTestParse01 (void)
-{
- DetectFileextData *dfd = DetectFileextParse("\"doc\"");
- if (dfd != NULL) {
- DetectFileextFree(dfd);
- return 1;
- }
- return 0;
-}
-
-/**
- * \test DetectFileextTestParse02
- */
-int DetectFileextTestParse02 (void)
-{
- int result = 0;
-
- DetectFileextData *dfd = DetectFileextParse("\"tar.gz\"");
- if (dfd != NULL) {
- if (dfd->len == 6 && memcmp(dfd->ext, "tar.gz", 6) == 0) {
- result = 1;
- }
-
- DetectFileextFree(dfd);
- return result;
- }
- return 0;
-}
-
-/**
- * \test DetectFileextTestParse03
- */
-int DetectFileextTestParse03 (void)
-{
- int result = 0;
-
- DetectFileextData *dfd = DetectFileextParse("\"pdf\"");
- if (dfd != NULL) {
- if (dfd->len == 3 && memcmp(dfd->ext, "pdf", 3) == 0) {
- result = 1;
- }
-
- DetectFileextFree(dfd);
- return result;
- }
- return 0;
-}
-
-#endif /* UNITTESTS */
-
-/**
- * \brief this function registers unit tests for DetectFileext
- */
-void DetectFileextRegisterTests(void)
-{
-#ifdef UNITTESTS /* UNITTESTS */
- UtRegisterTest("DetectFileextTestParse01", DetectFileextTestParse01, 1);
- UtRegisterTest("DetectFileextTestParse02", DetectFileextTestParse02, 1);
- UtRegisterTest("DetectFileextTestParse03", DetectFileextTestParse03, 1);
-#endif /* UNITTESTS */
-}