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-rw-r--r--framework/src/suricata/src/detect-http-uri.c556
1 files changed, 556 insertions, 0 deletions
diff --git a/framework/src/suricata/src/detect-http-uri.c b/framework/src/suricata/src/detect-http-uri.c
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+++ b/framework/src/suricata/src/detect-http-uri.c
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+/* Copyright (C) 2007-2010 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.
+ */
+
+/**
+ * \ingroup httplayer
+ *
+ * @{
+ */
+
+
+/**
+ * \file
+ *
+ * \author Gerardo Iglesias <iglesiasg@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-content.h"
+#include "detect-pcre.h"
+
+#include "flow.h"
+#include "flow-var.h"
+
+#include "util-debug.h"
+#include "util-unittest.h"
+#include "util-spm.h"
+#include "util-print.h"
+
+#include "app-layer.h"
+
+#include "app-layer-htp.h"
+#include "detect-http-uri.h"
+#include "detect-uricontent.h"
+#include "stream-tcp.h"
+
+int DetectHttpUriSetup (DetectEngineCtx *, Signature *, char *);
+void DetectHttpUriRegisterTests(void);
+
+/**
+ * \brief Registration function for keyword: http_uri
+ */
+void DetectHttpUriRegister (void)
+{
+ sigmatch_table[DETECT_AL_HTTP_URI].name = "http_uri";
+ sigmatch_table[DETECT_AL_HTTP_URI].desc = "content modifier to match specifically and only on the HTTP uri-buffer";
+ sigmatch_table[DETECT_AL_HTTP_URI].url = "https://redmine.openinfosecfoundation.org/projects/suricata/wiki/HTTP-keywords#http_uri-and-http_raw_uri";
+ sigmatch_table[DETECT_AL_HTTP_URI].Match = NULL;
+ sigmatch_table[DETECT_AL_HTTP_URI].AppLayerMatch = NULL;
+ sigmatch_table[DETECT_AL_HTTP_URI].alproto = ALPROTO_HTTP;
+ sigmatch_table[DETECT_AL_HTTP_URI].Setup = DetectHttpUriSetup;
+ sigmatch_table[DETECT_AL_HTTP_URI].Free = NULL;
+ sigmatch_table[DETECT_AL_HTTP_URI].RegisterTests = DetectHttpUriRegisterTests;
+
+ sigmatch_table[DETECT_AL_HTTP_URI].flags |= SIGMATCH_NOOPT;
+ sigmatch_table[DETECT_AL_HTTP_URI].flags |= SIGMATCH_PAYLOAD;
+}
+
+
+/**
+ * \brief this function setups the http_uri modifier keyword used in the rule
+ *
+ * \param de_ctx Pointer to the Detection Engine Context
+ * \param s Pointer to the Signature to which the current keyword belongs
+ * \param str Should hold an empty string always
+ *
+ * \retval 0 On success
+ * \retval -1 On failure
+ */
+
+int DetectHttpUriSetup(DetectEngineCtx *de_ctx, Signature *s, char *str)
+{
+ return DetectEngineContentModifierBufferSetup(de_ctx, s, str,
+ DETECT_AL_HTTP_URI,
+ DETECT_SM_LIST_UMATCH,
+ ALPROTO_HTTP,
+ NULL);
+}
+
+
+/******************************** UNITESTS **********************************/
+
+#ifdef UNITTESTS
+
+#include "stream-tcp-reassemble.h"
+
+/**
+ * \test Checks if a http_uri is registered in a Signature, if content is not
+ * specified in the signature
+ */
+int DetectHttpUriTest01(void)
+{
+ DetectEngineCtx *de_ctx = NULL;
+ int result = 0;
+
+ if ( (de_ctx = DetectEngineCtxInit()) == NULL)
+ goto end;
+
+ de_ctx->flags |= DE_QUIET;
+ de_ctx->sig_list = SigInit(de_ctx, "alert tcp any any -> any any "
+ "(msg:\"Testing http_uri\"; http_uri;sid:1;)");
+ if (de_ctx->sig_list == NULL)
+ result = 1;
+
+end:
+ if (de_ctx != NULL)
+ DetectEngineCtxFree(de_ctx);
+ return result;
+}
+
+/**
+ * \test Checks if a http_uri is registered in a Signature, if some parameter
+ * is specified with http_uri in the signature
+ */
+int DetectHttpUriTest02(void)
+{
+ DetectEngineCtx *de_ctx = NULL;
+ int result = 0;
+
+ if ( (de_ctx = DetectEngineCtxInit()) == NULL)
+ goto end;
+
+ de_ctx->flags |= DE_QUIET;
+ de_ctx->sig_list = SigInit(de_ctx, "alert tcp any any -> any any "
+ "(msg:\"Testing http_uri\"; content:\"one\"; "
+ "http_cookie:wrong; sid:1;)");
+ if (de_ctx->sig_list == NULL)
+ result = 1;
+
+end:
+ if (de_ctx != NULL)
+ DetectEngineCtxFree(de_ctx);
+ return result;
+}
+
+/**
+ * \test Checks if a http_uri is registered in a Signature
+ */
+int DetectHttpUriTest03(void)
+{
+ SigMatch *sm = NULL;
+ DetectEngineCtx *de_ctx = NULL;
+ int result = 0;
+
+ if ( (de_ctx = DetectEngineCtxInit()) == NULL)
+ goto end;
+
+ de_ctx->flags |= DE_QUIET;
+ de_ctx->sig_list = SigInit(de_ctx, "alert tcp any any -> any any "
+ "(msg:\"Testing http_uri\"; content:\"one\"; "
+ "http_uri; content:\"two\"; http_uri; "
+ "content:\"three\"; http_uri; "
+ "sid:1;)");
+
+ if (de_ctx->sig_list == NULL) {
+ printf("sig parse failed: ");
+ goto end;
+ }
+
+ sm = de_ctx->sig_list->sm_lists[DETECT_SM_LIST_UMATCH];
+ if (sm == NULL) {
+ printf("no sigmatch(es): ");
+ goto end;
+ }
+
+ while (sm != NULL) {
+ if (sm->type == DETECT_CONTENT) {
+ result = 1;
+ } else {
+ printf("expected DETECT_AL_HTTP_URI, got %d: ", sm->type);
+ goto end;
+ }
+ sm = sm->next;
+ }
+
+end:
+ if (de_ctx != NULL)
+ DetectEngineCtxFree(de_ctx);
+ return result;
+}
+
+/**
+ * \test Checks if a http_uri is registered in a Signature, when rawbytes is
+ * also specified in the signature
+ */
+int DetectHttpUriTest04(void)
+{
+ DetectEngineCtx *de_ctx = NULL;
+ int result = 0;
+
+ if ( (de_ctx = DetectEngineCtxInit()) == NULL)
+ goto end;
+
+ de_ctx->flags |= DE_QUIET;
+ de_ctx->sig_list = SigInit(de_ctx, "alert tcp any any -> any any "
+ "(msg:\"Testing http_uri\"; content:\"one\"; "
+ "rawbytes; http_uri; sid:1;)");
+ if (de_ctx->sig_list == NULL)
+ result = 1;
+
+ end:
+ if (de_ctx != NULL) SigCleanSignatures(de_ctx);
+ if (de_ctx != NULL) DetectEngineCtxFree(de_ctx);
+ return result;
+}
+
+/**
+ * \test Checks if a http_uri is successfully converted to a uricontent
+ *
+ */
+int DetectHttpUriTest05(void)
+{
+ DetectEngineCtx *de_ctx = NULL;
+ Signature *s = NULL;
+ int result = 0;
+
+ if ((de_ctx = DetectEngineCtxInit()) == NULL)
+ goto end;
+
+ s = SigInit(de_ctx, "alert tcp any any -> any any "
+ "(msg:\"Testing http_uri\"; "
+ "content:\"we are testing http_uri keyword\"; "
+ "http_uri; sid:1;)");
+ if (s == NULL) {
+ printf("sig failed to parse\n");
+ goto end;
+ }
+ if (s->sm_lists[DETECT_SM_LIST_UMATCH] == NULL)
+ goto end;
+ if (s->sm_lists[DETECT_SM_LIST_UMATCH]->type != DETECT_CONTENT) {
+ printf("wrong type\n");
+ goto end;
+ }
+
+ char *str = "we are testing http_uri keyword";
+ int uricomp = memcmp((const char *)((DetectContentData*) s->sm_lists[DETECT_SM_LIST_UMATCH]->ctx)->content, str, strlen(str)-1);
+ int urilen = ((DetectContentData*) s->sm_lists_tail[DETECT_SM_LIST_UMATCH]->ctx)->content_len;
+ if (uricomp != 0 ||
+ urilen != strlen("we are testing http_uri keyword")) {
+ printf("sig failed to parse, content not setup properly\n");
+ goto end;
+ }
+ result = 1;
+
+end:
+ if (de_ctx != NULL) SigCleanSignatures(de_ctx);
+ if (de_ctx != NULL) SigGroupCleanup(de_ctx);
+ return result;
+}
+
+int DetectHttpUriTest12(void)
+{
+ DetectEngineCtx *de_ctx = NULL;
+ int result = 0;
+
+ if ( (de_ctx = DetectEngineCtxInit()) == NULL)
+ goto end;
+
+ de_ctx->flags |= DE_QUIET;
+ de_ctx->sig_list = SigInit(de_ctx, "alert icmp any any -> any any "
+ "(content:\"one\"; http_uri; "
+ "content:\"two\"; distance:0; http_uri; sid:1;)");
+ if (de_ctx->sig_list == NULL) {
+ printf("de_ctx->sig_list == NULL\n");
+ goto end;
+ }
+
+ if (de_ctx->sig_list->sm_lists[DETECT_SM_LIST_PMATCH] != NULL) {
+ printf("de_ctx->sig_list->sm_lists[DETECT_SM_LIST_PMATCH] != NULL\n");
+ goto end;
+ }
+
+ if (de_ctx->sig_list->sm_lists[DETECT_SM_LIST_UMATCH] == NULL) {
+ printf("de_ctx->sig_list->sm_lists[DETECT_SM_LIST_UMATCH] == NULL\n");
+ goto end;
+ }
+
+ DetectContentData *ud1 = (DetectContentData *)de_ctx->sig_list->sm_lists_tail[DETECT_SM_LIST_UMATCH]->prev->ctx;
+ DetectContentData *ud2 = (DetectContentData *)de_ctx->sig_list->sm_lists_tail[DETECT_SM_LIST_UMATCH]->ctx;
+ if (ud1->flags != DETECT_CONTENT_RELATIVE_NEXT ||
+ memcmp(ud1->content, "one", ud1->content_len) != 0 ||
+ ud2->flags != DETECT_CONTENT_DISTANCE ||
+ memcmp(ud2->content, "two", ud1->content_len) != 0) {
+ goto end;
+ }
+
+ result = 1;
+
+ end:
+ SigCleanSignatures(de_ctx);
+ DetectEngineCtxFree(de_ctx);
+ return result;
+}
+
+int DetectHttpUriTest13(void)
+{
+ DetectEngineCtx *de_ctx = NULL;
+ int result = 0;
+
+ if ( (de_ctx = DetectEngineCtxInit()) == NULL)
+ goto end;
+
+ de_ctx->flags |= DE_QUIET;
+ de_ctx->sig_list = SigInit(de_ctx, "alert icmp any any -> any any "
+ "(content:\"one\"; http_uri; "
+ "content:\"two\"; within:5; http_uri; sid:1;)");
+ if (de_ctx->sig_list == NULL) {
+ printf("de_ctx->sig_list == NULL\n");
+ goto end;
+ }
+
+ if (de_ctx->sig_list->sm_lists[DETECT_SM_LIST_PMATCH] != NULL) {
+ printf("de_ctx->sig_list->sm_lists[DETECT_SM_LIST_PMATCH] != NULL\n");
+ goto end;
+ }
+
+ if (de_ctx->sig_list->sm_lists[DETECT_SM_LIST_UMATCH] == NULL) {
+ printf("de_ctx->sig_list->sm_lists[DETECT_SM_LIST_UMATCH] == NULL\n");
+ goto end;
+ }
+
+ DetectContentData *ud1 = (DetectContentData *)de_ctx->sig_list->sm_lists_tail[DETECT_SM_LIST_UMATCH]->prev->ctx;
+ DetectContentData *ud2 = (DetectContentData *)de_ctx->sig_list->sm_lists_tail[DETECT_SM_LIST_UMATCH]->ctx;
+ if (ud1->flags != DETECT_CONTENT_RELATIVE_NEXT ||
+ memcmp(ud1->content, "one", ud1->content_len) != 0 ||
+ ud2->flags != DETECT_CONTENT_WITHIN ||
+ memcmp(ud2->content, "two", ud1->content_len) != 0) {
+ goto end;
+ }
+
+ result = 1;
+
+ end:
+ SigCleanSignatures(de_ctx);
+ DetectEngineCtxFree(de_ctx);
+ return result;
+}
+
+int DetectHttpUriTest14(void)
+{
+ DetectEngineCtx *de_ctx = NULL;
+ int result = 0;
+
+ if ( (de_ctx = DetectEngineCtxInit()) == NULL)
+ goto end;
+
+ de_ctx->flags |= DE_QUIET;
+ de_ctx->sig_list = SigInit(de_ctx, "alert icmp any any -> any any "
+ "(content:\"one\"; within:5; http_uri; sid:1;)");
+ if (de_ctx->sig_list == NULL) {
+ printf("de_ctx->sig_list == NULL\n");
+ goto end;
+ }
+
+ result = 1;
+
+ end:
+ SigCleanSignatures(de_ctx);
+ DetectEngineCtxFree(de_ctx);
+ return result;
+}
+
+int DetectHttpUriTest15(void)
+{
+ DetectEngineCtx *de_ctx = NULL;
+ int result = 0;
+
+ if ( (de_ctx = DetectEngineCtxInit()) == NULL)
+ goto end;
+
+ de_ctx->flags |= DE_QUIET;
+ de_ctx->sig_list = SigInit(de_ctx, "alert icmp any any -> any any "
+ "(content:\"one\"; http_uri; within:5; sid:1;)");
+ if (de_ctx->sig_list == NULL) {
+ printf("de_ctx->sig_list == NULL\n");
+ goto end;
+ }
+
+ if (de_ctx->sig_list->sm_lists[DETECT_SM_LIST_UMATCH] == NULL) {
+ printf("de_ctx->sig_list->sm_lists[DETECT_SM_LIST_UMATCH] == NULL\n");
+ goto end;
+ }
+
+ DetectContentData *cd = (DetectContentData *)de_ctx->sig_list->sm_lists_tail[DETECT_SM_LIST_UMATCH]->ctx;
+ if (memcmp(cd->content, "one", cd->content_len) != 0 ||
+ cd->flags != DETECT_CONTENT_WITHIN) {
+ goto end;
+ }
+
+ result = 1;
+
+ end:
+ SigCleanSignatures(de_ctx);
+ DetectEngineCtxFree(de_ctx);
+ return result;
+}
+
+int DetectHttpUriTest16(void)
+{
+ DetectEngineCtx *de_ctx = NULL;
+ int result = 0;
+
+ if ( (de_ctx = DetectEngineCtxInit()) == NULL)
+ goto end;
+
+ de_ctx->flags |= DE_QUIET;
+ de_ctx->sig_list = SigInit(de_ctx, "alert icmp any any -> any any "
+ "(content:\"one\"; within:5; sid:1;)");
+ if (de_ctx->sig_list == NULL) {
+ printf("de_ctx->sig_list == NULL\n");
+ goto end;
+ }
+
+ result = 1;
+
+ end:
+ SigCleanSignatures(de_ctx);
+ DetectEngineCtxFree(de_ctx);
+ return result;
+}
+
+int DetectHttpUriTest17(void)
+{
+ DetectEngineCtx *de_ctx = NULL;
+ int result = 0;
+
+ if ( (de_ctx = DetectEngineCtxInit()) == NULL)
+ goto end;
+
+ de_ctx->flags |= DE_QUIET;
+ de_ctx->sig_list = SigInit(de_ctx, "alert icmp any any -> any any "
+ "(uricontent:\"one\"; "
+ "content:\"two\"; distance:0; http_uri; sid:1;)");
+ if (de_ctx->sig_list == NULL) {
+ printf("de_ctx->sig_list == NULL\n");
+ goto end;
+ }
+
+ if (de_ctx->sig_list->sm_lists[DETECT_SM_LIST_PMATCH] != NULL) {
+ printf("de_ctx->sig_list->sm_lists[DETECT_SM_LIST_PMATCH] != NULL\n");
+ goto end;
+ }
+
+ if (de_ctx->sig_list->sm_lists[DETECT_SM_LIST_UMATCH] == NULL) {
+ printf("de_ctx->sig_list->sm_lists[DETECT_SM_LIST_UMATCH] == NULL\n");
+ goto end;
+ }
+
+ DetectContentData *ud1 = (DetectContentData *)de_ctx->sig_list->sm_lists_tail[DETECT_SM_LIST_UMATCH]->prev->ctx;
+ DetectContentData *ud2 = (DetectContentData *)de_ctx->sig_list->sm_lists_tail[DETECT_SM_LIST_UMATCH]->ctx;
+ if (ud1->flags != DETECT_CONTENT_RELATIVE_NEXT ||
+ memcmp(ud1->content, "one", ud1->content_len) != 0 ||
+ ud2->flags != DETECT_CONTENT_DISTANCE ||
+ memcmp(ud2->content, "two", ud1->content_len) != 0) {
+ goto end;
+ }
+
+ result = 1;
+
+ end:
+ SigCleanSignatures(de_ctx);
+ DetectEngineCtxFree(de_ctx);
+ return result;
+}
+
+int DetectHttpUriTest18(void)
+{
+ DetectEngineCtx *de_ctx = NULL;
+ int result = 0;
+
+ if ( (de_ctx = DetectEngineCtxInit()) == NULL)
+ goto end;
+
+ de_ctx->flags |= DE_QUIET;
+ de_ctx->sig_list = SigInit(de_ctx, "alert icmp any any -> any any "
+ "(uricontent:\"one\"; "
+ "content:\"two\"; within:5; http_uri; sid:1;)");
+ if (de_ctx->sig_list == NULL) {
+ printf("de_ctx->sig_list == NULL\n");
+ goto end;
+ }
+
+ if (de_ctx->sig_list->sm_lists[DETECT_SM_LIST_PMATCH] != NULL) {
+ printf("de_ctx->sig_list->sm_lists[DETECT_SM_LIST_PMATCH] != NULL\n");
+ goto end;
+ }
+
+ if (de_ctx->sig_list->sm_lists[DETECT_SM_LIST_UMATCH] == NULL) {
+ printf("de_ctx->sig_list->sm_lists[DETECT_SM_LIST_UMATCH] == NULL\n");
+ goto end;
+ }
+
+ DetectContentData *ud1 = (DetectContentData *)de_ctx->sig_list->sm_lists_tail[DETECT_SM_LIST_UMATCH]->prev->ctx;
+ DetectContentData *ud2 = (DetectContentData *)de_ctx->sig_list->sm_lists_tail[DETECT_SM_LIST_UMATCH]->ctx;
+ if (ud1->flags != DETECT_CONTENT_RELATIVE_NEXT ||
+ memcmp(ud1->content, "one", ud1->content_len) != 0 ||
+ ud2->flags != DETECT_CONTENT_WITHIN ||
+ memcmp(ud2->content, "two", ud1->content_len) != 0) {
+ goto end;
+ }
+
+ result = 1;
+
+ end:
+ SigCleanSignatures(de_ctx);
+ DetectEngineCtxFree(de_ctx);
+ return result;
+}
+
+#endif /* UNITTESTS */
+
+/**
+ * \brief Register the UNITTESTS for the http_uri keyword
+ */
+void DetectHttpUriRegisterTests (void)
+{
+#ifdef UNITTESTS /* UNITTESTS */
+ UtRegisterTest("DetectHttpUriTest01", DetectHttpUriTest01, 1);
+ UtRegisterTest("DetectHttpUriTest02", DetectHttpUriTest02, 1);
+ UtRegisterTest("DetectHttpUriTest03", DetectHttpUriTest03, 1);
+ UtRegisterTest("DetectHttpUriTest04", DetectHttpUriTest04, 1);
+ UtRegisterTest("DetectHttpUriTest05", DetectHttpUriTest05, 1);
+ UtRegisterTest("DetectHttpUriTest12", DetectHttpUriTest12, 1);
+ UtRegisterTest("DetectHttpUriTest13", DetectHttpUriTest13, 1);
+ UtRegisterTest("DetectHttpUriTest14", DetectHttpUriTest14, 1);
+ UtRegisterTest("DetectHttpUriTest15", DetectHttpUriTest15, 1);
+ UtRegisterTest("DetectHttpUriTest16", DetectHttpUriTest16, 1);
+ UtRegisterTest("DetectHttpUriTest17", DetectHttpUriTest17, 1);
+ UtRegisterTest("DetectHttpUriTest18", DetectHttpUriTest18, 1);
+#endif /* UNITTESTS */
+
+}
+/**
+ * @}
+ */