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authorAshlee Young <ashlee@onosfw.com>2015-09-09 22:21:41 -0700
committerAshlee Young <ashlee@onosfw.com>2015-09-09 22:21:41 -0700
commit8879b125d26e8db1a5633de5a9c692eb2d1c4f83 (patch)
treec7259d85a991b83dfa85ab2e339360669fc1f58e /framework/src/suricata/src/detect-pcre.c
parent13d05bc8458758ee39cb829098241e89616717ee (diff)
suricata checkin based on commit id a4bce14770beee46a537eda3c3f6e8e8565d5d0a
Change-Id: I9a214fa0ee95e58fc640e50bd604dac7f42db48f
Diffstat (limited to 'framework/src/suricata/src/detect-pcre.c')
-rw-r--r--framework/src/suricata/src/detect-pcre.c4126
1 files changed, 4126 insertions, 0 deletions
diff --git a/framework/src/suricata/src/detect-pcre.c b/framework/src/suricata/src/detect-pcre.c
new file mode 100644
index 00000000..86f3d169
--- /dev/null
+++ b/framework/src/suricata/src/detect-pcre.c
@@ -0,0 +1,4126 @@
+/* Copyright (C) 2007-2013 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 the pcre keyword
+ */
+
+#include "suricata-common.h"
+#include "debug.h"
+#include "decode.h"
+#include "detect.h"
+
+#include "pkt-var.h"
+#include "flow-var.h"
+#include "flow-util.h"
+
+#include "detect-pcre.h"
+#include "detect-flowvar.h"
+
+#include "detect-parse.h"
+#include "detect-engine.h"
+#include "detect-engine-sigorder.h"
+#include "detect-engine-mpm.h"
+#include "detect-engine-state.h"
+
+#include "util-var-name.h"
+#include "util-unittest-helper.h"
+#include "util-debug.h"
+#include "util-unittest.h"
+#include "util-print.h"
+#include "util-pool.h"
+
+#include "conf.h"
+#include "app-layer.h"
+#include "app-layer-htp.h"
+#include "stream.h"
+#include "stream-tcp.h"
+#include "stream-tcp-private.h"
+#include "stream-tcp-reassemble.h"
+#include "app-layer-protos.h"
+#include "app-layer-parser.h"
+#include "app-layer-htp.h"
+
+#include "stream.h"
+
+
+#define PARSE_CAPTURE_REGEX "\\(\\?P\\<([A-z]+)\\_([A-z0-9_]+)\\>"
+#define PARSE_REGEX "(?<!\\\\)/(.*(?<!(?<!\\\\)\\\\))/([^\"]*)"
+
+#define SC_MATCH_LIMIT_DEFAULT 3500
+#define SC_MATCH_LIMIT_RECURSION_DEFAULT 1500
+
+static int pcre_match_limit = 0;
+static int pcre_match_limit_recursion = 0;
+
+static pcre *parse_regex;
+static pcre_extra *parse_regex_study;
+static pcre *parse_capture_regex;
+static pcre_extra *parse_capture_regex_study;
+
+int DetectPcreMatch (ThreadVars *, DetectEngineThreadCtx *, Packet *, Signature *, SigMatch *);
+int DetectPcreALMatchCookie(ThreadVars *t, DetectEngineThreadCtx *det_ctx, Flow *f, uint8_t flags, void *state, Signature *s, SigMatch *m);
+int DetectPcreALMatchMethod(ThreadVars *t, DetectEngineThreadCtx *det_ctx, Flow *f, uint8_t flags, void *state, Signature *s, SigMatch *m);
+static int DetectPcreSetup (DetectEngineCtx *, Signature *, char *);
+void DetectPcreFree(void *);
+void DetectPcreRegisterTests(void);
+
+void DetectPcreRegister (void)
+{
+ sigmatch_table[DETECT_PCRE].name = "pcre";
+ sigmatch_table[DETECT_PCRE].desc = "match on regular expression";
+ sigmatch_table[DETECT_PCRE].url = "https://redmine.openinfosecfoundation.org/projects/suricata/wiki/HTTP-keywords#Pcre-Perl-Compatible-Regular-Expressions";
+ sigmatch_table[DETECT_PCRE].Match = NULL;
+ sigmatch_table[DETECT_PCRE].AppLayerMatch = NULL;
+ sigmatch_table[DETECT_PCRE].alproto = ALPROTO_HTTP;
+ sigmatch_table[DETECT_PCRE].Setup = DetectPcreSetup;
+ sigmatch_table[DETECT_PCRE].Free = DetectPcreFree;
+ sigmatch_table[DETECT_PCRE].RegisterTests = DetectPcreRegisterTests;
+
+ sigmatch_table[DETECT_PCRE].flags |= SIGMATCH_PAYLOAD;
+
+ const char *eb;
+ int eo;
+ int opts = 0;
+ intmax_t val = 0;
+
+ if (!ConfGetInt("pcre.match-limit", &val)) {
+ pcre_match_limit = SC_MATCH_LIMIT_DEFAULT;
+ SCLogDebug("Using PCRE match-limit setting of: %i", pcre_match_limit);
+ }
+ else {
+ pcre_match_limit = val;
+ if (pcre_match_limit != SC_MATCH_LIMIT_DEFAULT) {
+ SCLogInfo("Using PCRE match-limit setting of: %i", pcre_match_limit);
+ } else {
+ SCLogDebug("Using PCRE match-limit setting of: %i", pcre_match_limit);
+ }
+ }
+
+ val = 0;
+
+ if (!ConfGetInt("pcre.match-limit-recursion", &val)) {
+ pcre_match_limit_recursion = SC_MATCH_LIMIT_RECURSION_DEFAULT;
+ SCLogDebug("Using PCRE match-limit-recursion setting of: %i", pcre_match_limit_recursion);
+ }
+ else {
+ pcre_match_limit_recursion = val;
+ if (pcre_match_limit_recursion != SC_MATCH_LIMIT_RECURSION_DEFAULT) {
+ SCLogInfo("Using PCRE match-limit-recursion setting of: %i", pcre_match_limit_recursion);
+ } else {
+ SCLogDebug("Using PCRE match-limit-recursion setting of: %i", pcre_match_limit_recursion);
+ }
+ }
+
+ parse_regex = pcre_compile(PARSE_REGEX, opts, &eb, &eo, NULL);
+ if(parse_regex == NULL)
+ {
+ SCLogError(SC_ERR_PCRE_COMPILE, "pcre compile of \"%s\" failed at offset %" PRId32 ": %s", PARSE_REGEX, eo, eb);
+ goto error;
+ }
+
+ parse_regex_study = pcre_study(parse_regex, 0, &eb);
+ if(eb != NULL)
+ {
+ SCLogError(SC_ERR_PCRE_STUDY, "pcre study failed: %s", eb);
+ goto error;
+ }
+
+ opts |= PCRE_UNGREEDY; /* pkt_http_ua should be pkt, http_ua, for this reason the UNGREEDY */
+ parse_capture_regex = pcre_compile(PARSE_CAPTURE_REGEX, opts, &eb, &eo, NULL);
+ if(parse_capture_regex == NULL)
+ {
+ SCLogError(SC_ERR_PCRE_COMPILE, "pcre compile of \"%s\" failed at offset %" PRId32 ": %s", PARSE_CAPTURE_REGEX, eo, eb);
+ goto error;
+ }
+
+ parse_capture_regex_study = pcre_study(parse_capture_regex, 0, &eb);
+ if(eb != NULL)
+ {
+ SCLogError(SC_ERR_PCRE_STUDY, "pcre study failed: %s", eb);
+ goto error;
+ }
+ return;
+
+error:
+ /* XXX */
+ return;
+}
+
+/**
+ * \brief Match a regex on a single payload.
+ *
+ * \param det_ctx Thread detection ctx.
+ * \param s Signature.
+ * \param sm Sig match to match against.
+ * \param p Packet to set PktVars if any.
+ * \param f Flow to set FlowVars if any.
+ * \param payload Payload to inspect.
+ * \param payload_len Length of the payload.
+ *
+ * \retval 1 Match.
+ * \retval 0 No match.
+ */
+int DetectPcrePayloadMatch(DetectEngineThreadCtx *det_ctx, Signature *s,
+ SigMatch *sm, Packet *p, Flow *f, uint8_t *payload,
+ uint32_t payload_len)
+{
+ SCEnter();
+#define MAX_SUBSTRINGS 30
+ int ret = 0;
+ int ov[MAX_SUBSTRINGS];
+ uint8_t *ptr = NULL;
+ uint16_t len = 0;
+ uint16_t capture_len = 0;
+
+ DetectPcreData *pe = (DetectPcreData *)sm->ctx;
+
+ if (pe->flags & DETECT_PCRE_RELATIVE) {
+ ptr = payload + det_ctx->buffer_offset;
+ len = payload_len - det_ctx->buffer_offset;
+ } else {
+ ptr = payload;
+ len = payload_len;
+ }
+
+ int start_offset = 0;
+ if (det_ctx->pcre_match_start_offset != 0) {
+ start_offset = (payload + det_ctx->pcre_match_start_offset - ptr);
+ }
+
+ /* run the actual pcre detection */
+ ret = pcre_exec(pe->re, pe->sd, (char *)ptr, len, start_offset, 0, ov, MAX_SUBSTRINGS);
+ SCLogDebug("ret %d (negating %s)", ret, (pe->flags & DETECT_PCRE_NEGATE) ? "set" : "not set");
+
+ if (ret == PCRE_ERROR_NOMATCH) {
+ if (pe->flags & DETECT_PCRE_NEGATE) {
+ /* regex didn't match with negate option means we
+ * consider it a match */
+ ret = 1;
+ } else {
+ ret = 0;
+ }
+ } else if (ret >= 0) {
+ if (pe->flags & DETECT_PCRE_NEGATE) {
+ /* regex matched but we're negated, so not
+ * considering it a match */
+ ret = 0;
+ } else {
+ /* regex matched and we're not negated,
+ * considering it a match */
+
+ SCLogDebug("ret %d capidx %u", ret, pe->capidx);
+
+ /* see if we need to do substring capturing. */
+ if (ret > 1 && pe->capidx != 0) {
+ SCLogDebug("capturing");
+ const char *str_ptr;
+ ret = pcre_get_substring((char *)ptr, ov, MAX_SUBSTRINGS, 1, &str_ptr);
+ if (ret) {
+ if (pe->flags & DETECT_PCRE_CAPTURE_PKT) {
+ if (p != NULL) {
+ PktVarAdd(p, pe->capname, (uint8_t *)str_ptr, ret);
+ }
+ } else if (pe->flags & DETECT_PCRE_CAPTURE_FLOW) {
+ if (f != NULL) {
+ /* store max 64k. Errors are ignored */
+ capture_len = (ret < 0xffff) ? (uint16_t)ret : 0xffff;
+ (void)DetectFlowvarStoreMatch(det_ctx, pe->capidx,
+ (uint8_t *)str_ptr, capture_len,
+ DETECT_FLOWVAR_TYPE_POSTMATCH);
+ }
+ }
+ }
+ }
+
+ /* update offset for pcre RELATIVE */
+ det_ctx->buffer_offset = (ptr + ov[1]) - payload;
+ det_ctx->pcre_match_start_offset = (ptr + ov[0] + 1) - payload;
+
+ ret = 1;
+ }
+
+ } else {
+ SCLogDebug("pcre had matching error");
+ ret = 0;
+ }
+ SCReturnInt(ret);
+}
+
+static int DetectPcreSetList(int list, int set)
+{
+ if (list != DETECT_SM_LIST_NOTSET) {
+ SCLogError(SC_ERR_INVALID_SIGNATURE, "only one pcre option to specify a buffer type is allowed");
+ return -1;
+ }
+ return set;
+}
+
+static DetectPcreData *DetectPcreParse (DetectEngineCtx *de_ctx, char *regexstr, int *sm_list)
+{
+ int ec;
+ const char *eb;
+ int eo;
+ int opts = 0;
+ DetectPcreData *pd = NULL;
+ char *op = NULL;
+#define MAX_SUBSTRINGS 30
+ int ret = 0, res = 0;
+ int ov[MAX_SUBSTRINGS];
+
+ size_t slen = strlen(regexstr);
+ char re[slen], op_str[64] = "";
+ uint16_t pos = 0;
+ uint8_t negate = 0;
+ uint16_t re_len = 0;
+ uint32_t u = 0;
+
+ while (pos < slen && isspace((unsigned char)regexstr[pos])) {
+ pos++;
+ }
+
+ if (regexstr[pos] == '!') {
+ negate = 1;
+ pos++;
+ }
+
+ ret = pcre_exec(parse_regex, parse_regex_study, regexstr + pos, slen-pos,
+ 0, 0, ov, MAX_SUBSTRINGS);
+ if (ret <= 0) {
+ SCLogError(SC_ERR_PCRE_MATCH, "pcre parse error: %s", regexstr);
+ goto error;
+ }
+
+ res = pcre_copy_substring((char *)regexstr + pos, ov, MAX_SUBSTRINGS,
+ 1, re, slen);
+ if (res < 0) {
+ SCLogError(SC_ERR_PCRE_GET_SUBSTRING, "pcre_copy_substring failed");
+ return NULL;
+ }
+
+ if (ret > 2) {
+ res = pcre_copy_substring((char *)regexstr + pos, ov, MAX_SUBSTRINGS,
+ 2, op_str, sizeof(op_str));
+ if (res < 0) {
+ SCLogError(SC_ERR_PCRE_GET_SUBSTRING, "pcre_copy_substring failed");
+ return NULL;
+ }
+ op = op_str;
+ }
+ //printf("ret %" PRId32 " re \'%s\', op \'%s\'\n", ret, re, op);
+
+ pd = SCMalloc(sizeof(DetectPcreData));
+ if (unlikely(pd == NULL))
+ goto error;
+ memset(pd, 0, sizeof(DetectPcreData));
+
+ if (negate)
+ pd->flags |= DETECT_PCRE_NEGATE;
+
+ if (op != NULL) {
+ while (*op) {
+ SCLogDebug("regex option %c", *op);
+
+ switch (*op) {
+ case 'A':
+ opts |= PCRE_ANCHORED;
+ break;
+ case 'E':
+ opts |= PCRE_DOLLAR_ENDONLY;
+ break;
+ case 'G':
+ opts |= PCRE_UNGREEDY;
+ break;
+
+ case 'i':
+ opts |= PCRE_CASELESS;
+ pd->flags |= DETECT_PCRE_CASELESS;
+ break;
+ case 'm':
+ opts |= PCRE_MULTILINE;
+ break;
+ case 's':
+ opts |= PCRE_DOTALL;
+ break;
+ case 'x':
+ opts |= PCRE_EXTENDED;
+ break;
+
+ case 'O':
+ pd->flags |= DETECT_PCRE_MATCH_LIMIT;
+ break;
+
+ case 'B': /* snort's option */
+ if (*sm_list != DETECT_SM_LIST_NOTSET) {
+ SCLogError(SC_ERR_INVALID_SIGNATURE, "regex modifier 'B' inconsistent with chosen buffer");
+ goto error;
+ }
+ pd->flags |= DETECT_PCRE_RAWBYTES;
+ break;
+ case 'R': /* snort's option */
+ pd->flags |= DETECT_PCRE_RELATIVE;
+ break;
+
+ /* buffer selection */
+
+ case 'U': /* snort's option */
+ if (pd->flags & DETECT_PCRE_RAWBYTES) {
+ SCLogError(SC_ERR_INVALID_SIGNATURE, "regex modifier 'U' inconsistent with 'B'");
+ goto error;
+ }
+ *sm_list = DetectPcreSetList(*sm_list, DETECT_SM_LIST_UMATCH);
+ break;
+ case 'V':
+ if (pd->flags & DETECT_PCRE_RAWBYTES) {
+ SCLogError(SC_ERR_INVALID_SIGNATURE, "regex modifier 'V' inconsistent with 'B'");
+ goto error;
+ }
+ *sm_list = DetectPcreSetList(*sm_list, DETECT_SM_LIST_HUADMATCH);
+ break;
+ case 'W':
+ if (pd->flags & DETECT_PCRE_RAWBYTES) {
+ SCLogError(SC_ERR_INVALID_SIGNATURE, "regex modifier 'W' inconsistent with 'B'");
+ goto error;
+ }
+ *sm_list = DetectPcreSetList(*sm_list, DETECT_SM_LIST_HHHDMATCH);
+ break;
+ case 'Z':
+ if (pd->flags & DETECT_PCRE_RAWBYTES) {
+ SCLogError(SC_ERR_INVALID_SIGNATURE, "regex modifier 'Z' inconsistent with 'B'");
+ goto error;
+ }
+ *sm_list = DetectPcreSetList(*sm_list, DETECT_SM_LIST_HRHHDMATCH);
+ break;
+ case 'H': /* snort's option */
+ if (pd->flags & DETECT_PCRE_RAWBYTES) {
+ SCLogError(SC_ERR_INVALID_SIGNATURE, "regex modifier 'H' inconsistent with 'B'");
+ goto error;
+ }
+ *sm_list = DetectPcreSetList(*sm_list, DETECT_SM_LIST_HHDMATCH);
+ break;
+ case 'I': /* snort's option */
+ if (pd->flags & DETECT_PCRE_RAWBYTES) {
+ SCLogError(SC_ERR_INVALID_SIGNATURE, "regex modifier 'I' inconsistent with 'B'");
+ goto error;
+ }
+ *sm_list = DetectPcreSetList(*sm_list, DETECT_SM_LIST_HRUDMATCH);
+ break;
+ case 'D': /* snort's option */
+ *sm_list = DetectPcreSetList(*sm_list, DETECT_SM_LIST_HRHDMATCH);
+ break;
+ case 'M': /* snort's option */
+ if (pd->flags & DETECT_PCRE_RAWBYTES) {
+ SCLogError(SC_ERR_INVALID_SIGNATURE, "regex modifier 'M' inconsistent with 'B'");
+ goto error;
+ }
+ *sm_list = DetectPcreSetList(*sm_list, DETECT_SM_LIST_HMDMATCH);
+ break;
+ case 'C': /* snort's option */
+ if (pd->flags & DETECT_PCRE_RAWBYTES) {
+ SCLogError(SC_ERR_INVALID_SIGNATURE, "regex modifier 'C' inconsistent with 'B'");
+ goto error;
+ }
+ *sm_list = DetectPcreSetList(*sm_list, DETECT_SM_LIST_HCDMATCH);
+ break;
+ case 'P':
+ /* snort's option (http request body inspection) */
+ *sm_list = DetectPcreSetList(*sm_list, DETECT_SM_LIST_HCBDMATCH);
+ break;
+ case 'Q':
+ /* suricata extension (http response body inspection) */
+ *sm_list = DetectPcreSetList(*sm_list, DETECT_SM_LIST_FILEDATA);
+ break;
+ case 'Y':
+ /* snort's option */
+ *sm_list = DetectPcreSetList(*sm_list, DETECT_SM_LIST_HSMDMATCH);
+ break;
+ case 'S':
+ /* snort's option */
+ *sm_list = DetectPcreSetList(*sm_list, DETECT_SM_LIST_HSCDMATCH);
+ break;
+ default:
+ SCLogError(SC_ERR_UNKNOWN_REGEX_MOD, "unknown regex modifier '%c'", *op);
+ goto error;
+ }
+ op++;
+ }
+ }
+ if (*sm_list == -1)
+ goto error;
+
+ SCLogDebug("DetectPcreParse: \"%s\"", re);
+
+ /* host header */
+ if (*sm_list == DETECT_SM_LIST_HHHDMATCH) {
+ if (pd->flags & DETECT_PCRE_CASELESS) {
+ SCLogWarning(SC_ERR_INVALID_SIGNATURE, "http host pcre(\"W\") "
+ "specified along with \"i(caseless)\" modifier. "
+ "Since the hostname buffer we match against "
+ "is actually lowercase, having a "
+ "nocase is redundant.");
+ } else {
+ re_len = strlen(re);
+ for (u = 0; u < re_len; u++) {
+ if (isupper((unsigned char)re[u])) {
+ SCLogError(SC_ERR_INVALID_SIGNATURE, "pcre host(\"W\") "
+ "specified has an uppercase char. "
+ "Since the hostname buffer we match against "
+ "is actually lowercase, please specify an "
+ "all lowercase based pcre.");
+ goto error;
+ }
+ }
+ }
+ }
+
+ /* Try to compile as if all (...) groups had been meant as (?:...),
+ * which is the common case in most rules.
+ * If we fail because a capture group is later referenced (e.g., \1),
+ * PCRE will let us know.
+ */
+ pd->re = pcre_compile2(re, opts | PCRE_NO_AUTO_CAPTURE, &ec, &eb, &eo, NULL);
+ if (pd->re == NULL && ec == 15) { // reference to non-existent subpattern
+ pd->re = pcre_compile(re, opts, &eb, &eo, NULL);
+ }
+
+ if(pd->re == NULL) {
+ SCLogError(SC_ERR_PCRE_COMPILE, "pcre compile of \"%s\" failed at offset %" PRId32 ": %s", regexstr, eo, eb);
+ goto error;
+ }
+#ifdef PCRE_HAVE_JIT
+ pd->sd = pcre_study(pd->re, PCRE_STUDY_JIT_COMPILE, &eb);
+ if(eb != NULL) {
+ SCLogError(SC_ERR_PCRE_STUDY, "pcre study failed : %s", eb);
+ goto error;
+ }
+
+ int jit = 0;
+ ret = pcre_fullinfo(pd->re, pd->sd, PCRE_INFO_JIT, &jit);
+ if (ret != 0 || jit != 1) {
+ /* warning, so we won't print the sig after this. Adding
+ * file and line to the message so the admin can figure
+ * out what sig this is about */
+ SCLogDebug("PCRE JIT compiler does not support: %s. "
+ "Falling back to regular PCRE handling (%s:%d)",
+ regexstr, de_ctx->rule_file, de_ctx->rule_line);
+ }
+#else
+ pd->sd = pcre_study(pd->re, 0, &eb);
+ if(eb != NULL) {
+ SCLogError(SC_ERR_PCRE_STUDY, "pcre study failed : %s", eb);
+ goto error;
+ }
+#endif /*PCRE_HAVE_JIT*/
+
+ if (pd->sd == NULL)
+ pd->sd = (pcre_extra *) SCCalloc(1,sizeof(pcre_extra));
+
+ if (pd->sd) {
+ if(pd->flags & DETECT_PCRE_MATCH_LIMIT) {
+ if(pcre_match_limit >= -1) {
+ pd->sd->match_limit = pcre_match_limit;
+ pd->sd->flags |= PCRE_EXTRA_MATCH_LIMIT;
+ }
+#ifndef NO_PCRE_MATCH_RLIMIT
+ if(pcre_match_limit_recursion >= -1) {
+ pd->sd->match_limit_recursion = pcre_match_limit_recursion;
+ pd->sd->flags |= PCRE_EXTRA_MATCH_LIMIT_RECURSION;
+ }
+#endif /* NO_PCRE_MATCH_RLIMIT */
+ } else {
+ pd->sd->match_limit = SC_MATCH_LIMIT_DEFAULT;
+ pd->sd->flags |= PCRE_EXTRA_MATCH_LIMIT;
+#ifndef NO_PCRE_MATCH_RLIMIT
+ pd->sd->match_limit_recursion = SC_MATCH_LIMIT_RECURSION_DEFAULT;
+ pd->sd->flags |= PCRE_EXTRA_MATCH_LIMIT_RECURSION;
+#endif /* NO_PCRE_MATCH_RLIMIT */
+ }
+ } else {
+ goto error;
+ }
+
+ return pd;
+
+error:
+ if (pd != NULL && pd->re != NULL)
+ pcre_free(pd->re);
+ if (pd != NULL && pd->sd != NULL)
+ pcre_free(pd->sd);
+ if (pd)
+ SCFree(pd);
+ return NULL;
+}
+
+/** \internal
+ * \brief check if we need to extract capture settings and set them up if needed
+ */
+static int DetectPcreParseCapture(char *regexstr, DetectEngineCtx *de_ctx, DetectPcreData *pd)
+{
+ int ret = 0, res = 0;
+ int ov[MAX_SUBSTRINGS];
+ char type_str[16] = "";
+ size_t cap_buffer_len = strlen(regexstr);
+ char capture_str[cap_buffer_len];
+ memset(capture_str, 0x00, cap_buffer_len);
+
+ if (de_ctx == NULL)
+ goto error;
+
+ SCLogDebug("\'%s\'", regexstr);
+
+ ret = pcre_exec(parse_capture_regex, parse_capture_regex_study, regexstr, strlen(regexstr), 0, 0, ov, MAX_SUBSTRINGS);
+ if (ret < 3) {
+ return 0;
+ }
+
+ res = pcre_copy_substring((char *)regexstr, ov, MAX_SUBSTRINGS, 1, type_str, sizeof(type_str));
+ if (res < 0) {
+ SCLogError(SC_ERR_PCRE_GET_SUBSTRING, "pcre_copy_substring failed");
+ goto error;
+ }
+ res = pcre_copy_substring((char *)regexstr, ov, MAX_SUBSTRINGS, 2, capture_str, cap_buffer_len);
+ if (res < 0) {
+ SCLogError(SC_ERR_PCRE_GET_SUBSTRING, "pcre_copy_substring failed");
+ goto error;
+ }
+ if (strlen(capture_str) == 0 || strlen(type_str) == 0) {
+ goto error;
+ }
+
+ SCLogDebug("type \'%s\'", type_str);
+ SCLogDebug("capture \'%s\'", capture_str);
+
+ pd->capname = SCStrdup(capture_str);
+ if (unlikely(pd->capname == NULL))
+ goto error;
+
+ if (strcmp(type_str, "pkt") == 0) {
+ pd->flags |= DETECT_PCRE_CAPTURE_PKT;
+ } else if (strcmp(type_str, "flow") == 0) {
+ pd->flags |= DETECT_PCRE_CAPTURE_FLOW;
+ SCLogDebug("flow capture");
+ }
+ if (pd->capname != NULL) {
+ if (pd->flags & DETECT_PCRE_CAPTURE_PKT)
+ pd->capidx = VariableNameGetIdx(de_ctx, (char *)pd->capname, VAR_TYPE_PKT_VAR);
+ else if (pd->flags & DETECT_PCRE_CAPTURE_FLOW)
+ pd->capidx = VariableNameGetIdx(de_ctx, (char *)pd->capname, VAR_TYPE_FLOW_VAR);
+ }
+
+ SCLogDebug("pd->capname %s", pd->capname);
+ return 0;
+
+error:
+ if (pd->capname != NULL) {
+ SCFree(pd->capname);
+ pd->capname = NULL;
+ }
+ return -1;
+}
+
+static int DetectPcreSetup (DetectEngineCtx *de_ctx, Signature *s, char *regexstr)
+{
+ SCEnter();
+ DetectPcreData *pd = NULL;
+ SigMatch *sm = NULL;
+ int ret = -1;
+ int parsed_sm_list = DETECT_SM_LIST_NOTSET;
+
+ pd = DetectPcreParse(de_ctx, regexstr, &parsed_sm_list);
+ if (pd == NULL)
+ goto error;
+ if (DetectPcreParseCapture(regexstr, de_ctx, pd) < 0)
+ goto error;
+
+ if (parsed_sm_list == DETECT_SM_LIST_UMATCH ||
+ parsed_sm_list == DETECT_SM_LIST_HRUDMATCH ||
+ parsed_sm_list == DETECT_SM_LIST_HCBDMATCH ||
+ parsed_sm_list == DETECT_SM_LIST_FILEDATA ||
+ parsed_sm_list == DETECT_SM_LIST_HHDMATCH ||
+ parsed_sm_list == DETECT_SM_LIST_HRHDMATCH ||
+ parsed_sm_list == DETECT_SM_LIST_HSMDMATCH ||
+ parsed_sm_list == DETECT_SM_LIST_HSCDMATCH ||
+ parsed_sm_list == DETECT_SM_LIST_HHHDMATCH ||
+ parsed_sm_list == DETECT_SM_LIST_HRHHDMATCH ||
+ parsed_sm_list == DETECT_SM_LIST_HMDMATCH ||
+ parsed_sm_list == DETECT_SM_LIST_HCDMATCH ||
+ parsed_sm_list == DETECT_SM_LIST_HUADMATCH)
+ {
+ if (s->alproto != ALPROTO_UNKNOWN && s->alproto != ALPROTO_HTTP) {
+ SCLogError(SC_ERR_CONFLICTING_RULE_KEYWORDS, "Invalid option. "
+ "Conflicting alprotos detected for this rule. Http "
+ "pcre modifier found along with a different protocol "
+ "for the rule.");
+ goto error;
+ }
+ if (s->list != DETECT_SM_LIST_NOTSET) {
+ SCLogError(SC_ERR_INVALID_SIGNATURE, "pcre found with http "
+ "modifier set, with file_data/dce_stub_data sticky "
+ "option set.");
+ goto error;
+ }
+ }
+
+ int sm_list = -1;
+ if (s->list != DETECT_SM_LIST_NOTSET) {
+ if (s->list == DETECT_SM_LIST_FILEDATA) {
+ SCLogDebug("adding to http server body list because of file data");
+ AppLayerHtpEnableResponseBodyCallback();
+ } else if (s->list == DETECT_SM_LIST_DMATCH) {
+ SCLogDebug("adding to dmatch list because of dce_stub_data");
+ } else if (s->list == DETECT_SM_LIST_DNSQUERYNAME_MATCH) {
+ SCLogDebug("adding to DETECT_SM_LIST_DNSQUERYNAME_MATCH list because of dns_query");
+ }
+ s->flags |= SIG_FLAG_APPLAYER;
+ sm_list = s->list;
+ } else {
+ switch(parsed_sm_list) {
+ case DETECT_SM_LIST_HCBDMATCH:
+ AppLayerHtpEnableRequestBodyCallback();
+ s->flags |= SIG_FLAG_APPLAYER;
+ s->alproto = ALPROTO_HTTP;
+ sm_list = parsed_sm_list;
+ break;
+
+ case DETECT_SM_LIST_FILEDATA:
+ AppLayerHtpEnableResponseBodyCallback();
+ s->flags |= SIG_FLAG_APPLAYER;
+ s->alproto = ALPROTO_HTTP;
+ sm_list = parsed_sm_list;
+ break;
+
+ case DETECT_SM_LIST_UMATCH:
+ case DETECT_SM_LIST_HRUDMATCH:
+ case DETECT_SM_LIST_HHDMATCH:
+ case DETECT_SM_LIST_HRHDMATCH:
+ case DETECT_SM_LIST_HHHDMATCH:
+ case DETECT_SM_LIST_HRHHDMATCH:
+ case DETECT_SM_LIST_HSMDMATCH:
+ case DETECT_SM_LIST_HSCDMATCH:
+ case DETECT_SM_LIST_HCDMATCH:
+ case DETECT_SM_LIST_HMDMATCH:
+ case DETECT_SM_LIST_HUADMATCH:
+ s->flags |= SIG_FLAG_APPLAYER;
+ s->alproto = ALPROTO_HTTP;
+ sm_list = parsed_sm_list;
+ break;
+ case DETECT_SM_LIST_NOTSET:
+ sm_list = DETECT_SM_LIST_PMATCH;
+ break;
+ }
+ }
+ if (sm_list == -1)
+ goto error;
+
+ sm = SigMatchAlloc();
+ if (sm == NULL)
+ goto error;
+ sm->type = DETECT_PCRE;
+ sm->ctx = (void *)pd;
+ SigMatchAppendSMToList(s, sm, sm_list);
+
+ if (pd->capidx != 0) {
+ if (DetectFlowvarPostMatchSetup(s, pd->capidx) < 0)
+ goto error_nofree;
+ }
+
+ if (!(pd->flags & DETECT_PCRE_RELATIVE))
+ goto okay;
+
+ /* errors below shouldn't free pd */
+
+ SigMatch *prev_pm = SigMatchGetLastSMFromLists(s, 4,
+ DETECT_CONTENT, sm->prev,
+ DETECT_PCRE, sm->prev);
+ if (s->list == DETECT_SM_LIST_NOTSET && prev_pm == NULL) {
+ SCLogError(SC_ERR_INVALID_SIGNATURE, "pcre with /R (relative) needs "
+ "preceeding match in the same buffer");
+ goto error_nofree;
+ /* null is allowed when we use a sticky buffer */
+ } else if (prev_pm == NULL)
+ goto okay;
+ if (prev_pm->type == DETECT_CONTENT) {
+ DetectContentData *cd = (DetectContentData *)prev_pm->ctx;
+ cd->flags |= DETECT_CONTENT_RELATIVE_NEXT;
+ } else if (prev_pm->type == DETECT_PCRE) {
+ DetectPcreData *tmp = (DetectPcreData *)prev_pm->ctx;
+ tmp->flags |= DETECT_PCRE_RELATIVE_NEXT;
+ }
+
+ okay:
+ ret = 0;
+ SCReturnInt(ret);
+ error:
+ DetectPcreFree(pd);
+ error_nofree:
+ SCReturnInt(ret);
+}
+
+void DetectPcreFree(void *ptr)
+{
+ if (ptr == NULL)
+ return;
+
+ DetectPcreData *pd = (DetectPcreData *)ptr;
+
+ if (pd->capname != NULL)
+ SCFree(pd->capname);
+ if (pd->re != NULL)
+ pcre_free(pd->re);
+ if (pd->sd != NULL)
+ pcre_free(pd->sd);
+
+ SCFree(pd);
+ return;
+}
+
+#ifdef UNITTESTS /* UNITTESTS */
+
+/**
+ * \test DetectPcreParseTest01 make sure we don't allow invalid opts 7.
+ */
+static int DetectPcreParseTest01 (void)
+{
+ int result = 1;
+ DetectPcreData *pd = NULL;
+ char *teststring = "/blah/7";
+ int list = DETECT_SM_LIST_NOTSET;
+ DetectEngineCtx *de_ctx = DetectEngineCtxInit();
+ if (de_ctx == NULL)
+ return 0;
+
+ pd = DetectPcreParse(de_ctx, teststring, &list);
+ if (pd != NULL) {
+ printf("expected NULL: got %p", pd);
+ result = 0;
+ DetectPcreFree(pd);
+ }
+
+ DetectEngineCtxFree(de_ctx);
+ return result;
+}
+
+/**
+ * \test DetectPcreParseTest02 make sure we don't allow invalid opts Ui$.
+ */
+static int DetectPcreParseTest02 (void)
+{
+ int result = 1;
+ DetectPcreData *pd = NULL;
+ char *teststring = "/blah/Ui$";
+ int list = DETECT_SM_LIST_NOTSET;
+ DetectEngineCtx *de_ctx = DetectEngineCtxInit();
+ if (de_ctx == NULL)
+ return 0;
+
+ pd = DetectPcreParse(de_ctx, teststring, &list);
+ if (pd != NULL) {
+ printf("expected NULL: got %p", pd);
+ result = 0;
+ DetectPcreFree(pd);
+ }
+ DetectEngineCtxFree(de_ctx);
+ return result;
+}
+
+/**
+ * \test DetectPcreParseTest03 make sure we don't allow invalid opts UZi.
+ */
+static int DetectPcreParseTest03 (void)
+{
+ int result = 1;
+ DetectPcreData *pd = NULL;
+ char *teststring = "/blah/UNi";
+ int list = DETECT_SM_LIST_NOTSET;
+ DetectEngineCtx *de_ctx = DetectEngineCtxInit();
+ if (de_ctx == NULL)
+ return 0;
+
+ pd = DetectPcreParse(de_ctx, teststring, &list);
+ if (pd != NULL) {
+ printf("expected NULL: got %p", pd);
+ result = 0;
+ DetectPcreFree(pd);
+ }
+ DetectEngineCtxFree(de_ctx);
+ return result;
+}
+
+/**
+ * \test DetectPcreParseTest04 make sure we allow escaped "
+ */
+static int DetectPcreParseTest04 (void)
+{
+ int result = 1;
+ DetectPcreData *pd = NULL;
+ char *teststring = "/b\\\"lah/i";
+ int list = DETECT_SM_LIST_NOTSET;
+ DetectEngineCtx *de_ctx = DetectEngineCtxInit();
+ if (de_ctx == NULL)
+ return 0;
+
+ pd = DetectPcreParse(de_ctx, teststring, &list);
+ if (pd == NULL) {
+ printf("expected %p: got NULL", pd);
+ result = 0;
+ }
+
+ DetectPcreFree(pd);
+ DetectEngineCtxFree(de_ctx);
+ return result;
+}
+
+/**
+ * \test DetectPcreParseTest05 make sure we parse pcre with no opts
+ */
+static int DetectPcreParseTest05 (void)
+{
+ int result = 1;
+ DetectPcreData *pd = NULL;
+ char *teststring = "/b(l|a)h/";
+ int list = DETECT_SM_LIST_NOTSET;
+ DetectEngineCtx *de_ctx = DetectEngineCtxInit();
+ if (de_ctx == NULL)
+ return 0;
+
+ pd = DetectPcreParse(de_ctx, teststring, &list);
+ if (pd == NULL) {
+ printf("expected %p: got NULL", pd);
+ result = 0;
+ }
+
+ DetectPcreFree(pd);
+ DetectEngineCtxFree(de_ctx);
+ return result;
+}
+
+/**
+ * \test DetectPcreParseTest06 make sure we parse pcre with smi opts
+ */
+static int DetectPcreParseTest06 (void)
+{
+ int result = 1;
+ DetectPcreData *pd = NULL;
+ char *teststring = "/b(l|a)h/smi";
+ int list = DETECT_SM_LIST_NOTSET;
+ DetectEngineCtx *de_ctx = DetectEngineCtxInit();
+ if (de_ctx == NULL)
+ return 0;
+
+ pd = DetectPcreParse(de_ctx, teststring, &list);
+ if (pd == NULL) {
+ printf("expected %p: got NULL", pd);
+ result = 0;
+ }
+
+ DetectPcreFree(pd);
+ DetectEngineCtxFree(de_ctx);
+ return result;
+}
+
+/**
+ * \test DetectPcreParseTest07 make sure we parse pcre with /Ui opts
+ */
+static int DetectPcreParseTest07 (void)
+{
+ int result = 1;
+ DetectPcreData *pd = NULL;
+ char *teststring = "/blah/Ui";
+ int list = DETECT_SM_LIST_NOTSET;
+ DetectEngineCtx *de_ctx = DetectEngineCtxInit();
+ if (de_ctx == NULL)
+ return 0;
+
+ pd = DetectPcreParse(de_ctx, teststring, &list);
+ if (pd == NULL) {
+ printf("expected %p: got NULL", pd);
+ result = 0;
+ }
+
+ DetectPcreFree(pd);
+ DetectEngineCtxFree(de_ctx);
+ return result;
+}
+
+/**
+ * \test DetectPcreParseTest08 make sure we parse pcre with O opts
+ */
+static int DetectPcreParseTest08 (void)
+{
+ int result = 1;
+ DetectPcreData *pd = NULL;
+ char *teststring = "/b(l|a)h/O";
+ int list = DETECT_SM_LIST_NOTSET;
+ DetectEngineCtx *de_ctx = DetectEngineCtxInit();
+ if (de_ctx == NULL)
+ return 0;
+
+ pd = DetectPcreParse(de_ctx, teststring, &list);
+ if (pd == NULL) {
+ printf("expected %p: got NULL", pd);
+ result = 0;
+ }
+
+ DetectPcreFree(pd);
+ DetectEngineCtxFree(de_ctx);
+ return result;
+}
+
+/**
+ * \test DetectPcreParseTest09 make sure we parse pcre with a content
+ * that has slashes
+ */
+static int DetectPcreParseTest09 (void)
+{
+ int result = 1;
+ DetectPcreData *pd = NULL;
+ char *teststring = "/lala\\\\/";
+ int list = DETECT_SM_LIST_NOTSET;
+ DetectEngineCtx *de_ctx = DetectEngineCtxInit();
+ if (de_ctx == NULL)
+ return 0;
+
+ pd = DetectPcreParse(de_ctx, teststring, &list);
+ if (pd == NULL) {
+ printf("expected %p: got NULL", pd);
+ result = 0;
+ }
+
+ DetectPcreFree(pd);
+ DetectEngineCtxFree(de_ctx);
+ return result;
+}
+
+/**
+ * \test Test pcre option for dce sig(yeah I'm bored of writing test titles).
+ */
+int DetectPcreParseTest10(void)
+{
+ Signature *s = SigAlloc();
+ int result = 1;
+ DetectEngineCtx *de_ctx = DetectEngineCtxInit();
+ if (de_ctx == NULL) {
+ result = 0;
+ goto end;
+ }
+
+ s->alproto = ALPROTO_DCERPC;
+
+ result &= (DetectPcreSetup(de_ctx, s, "/bamboo/") == 0);
+ result &= (s->sm_lists[DETECT_SM_LIST_DMATCH] == NULL && s->sm_lists[DETECT_SM_LIST_PMATCH] != NULL);
+
+ SigFree(s);
+
+ s = SigAlloc();
+ /* failure since we have no preceding content/pcre/bytejump */
+ result &= (DetectPcreSetup(de_ctx, s, "/bamboo/") == 0);
+ result &= (s->sm_lists[DETECT_SM_LIST_DMATCH] == NULL && s->sm_lists[DETECT_SM_LIST_PMATCH] != NULL);
+
+ end:
+ SigFree(s);
+ DetectEngineCtxFree(de_ctx);
+
+ return result;
+}
+
+/**
+ * \test Test pcre option for dce sig.
+ */
+int DetectPcreParseTest11(void)
+{
+ DetectEngineCtx *de_ctx = NULL;
+ int result = 1;
+ Signature *s = NULL;
+ DetectPcreData *data = NULL;
+
+ de_ctx = DetectEngineCtxInit();
+ if (de_ctx == NULL)
+ goto end;
+
+ de_ctx->flags |= DE_QUIET;
+ de_ctx->sig_list = SigInit(de_ctx, "alert tcp any any -> any any "
+ "(msg:\"Testing bytejump_body\"; "
+ "dce_iface:3919286a-b10c-11d0-9ba8-00c04fd92ef5; "
+ "dce_stub_data; "
+ "pcre:/bamboo/R; sid:1;)");
+ if (de_ctx->sig_list == NULL) {
+ result = 0;
+ goto end;
+ }
+ s = de_ctx->sig_list;
+ if (s->sm_lists_tail[DETECT_SM_LIST_DMATCH] == NULL) {
+ result = 0;
+ goto end;
+ }
+ result &= (s->sm_lists_tail[DETECT_SM_LIST_DMATCH]->type == DETECT_PCRE);
+ data = (DetectPcreData *)s->sm_lists_tail[DETECT_SM_LIST_DMATCH]->ctx;
+ if (data->flags & DETECT_PCRE_RAWBYTES ||
+ !(data->flags & DETECT_PCRE_RELATIVE)) {
+ result = 0;
+ goto end;
+ }
+
+ s->next = SigInit(de_ctx, "alert tcp any any -> any any "
+ "(msg:\"Testing bytejump_body\"; "
+ "dce_iface:3919286a-b10c-11d0-9ba8-00c04fd92ef5; "
+ "dce_stub_data; "
+ "pcre:/bamboo/R; sid:1;)");
+ if (s->next == NULL) {
+ result = 0;
+ goto end;
+ }
+ s = s->next;
+ if (s->sm_lists_tail[DETECT_SM_LIST_DMATCH] == NULL) {
+ result = 0;
+ goto end;
+ }
+ result &= (s->sm_lists_tail[DETECT_SM_LIST_DMATCH]->type == DETECT_PCRE);
+ data = (DetectPcreData *)s->sm_lists_tail[DETECT_SM_LIST_DMATCH]->ctx;
+ if (data->flags & DETECT_PCRE_RAWBYTES ||
+ !(data->flags & DETECT_PCRE_RELATIVE)) {
+ result = 0;
+ goto end;
+ }
+
+ s->next = SigInit(de_ctx, "alert tcp any any -> any any "
+ "(msg:\"Testing bytejump_body\"; "
+ "dce_iface:3919286a-b10c-11d0-9ba8-00c04fd92ef5; "
+ "dce_stub_data; "
+ "pcre:/bamboo/RB; sid:1;)");
+ if (s->next == NULL) {
+ result = 0;
+ goto end;
+ }
+ s = s->next;
+ if (s->sm_lists_tail[DETECT_SM_LIST_DMATCH] == NULL) {
+ result = 0;
+ goto end;
+ }
+ result &= (s->sm_lists_tail[DETECT_SM_LIST_DMATCH]->type == DETECT_PCRE);
+ data = (DetectPcreData *)s->sm_lists_tail[DETECT_SM_LIST_DMATCH]->ctx;
+ if (!(data->flags & DETECT_PCRE_RAWBYTES) ||
+ !(data->flags & DETECT_PCRE_RELATIVE)) {
+ result = 0;
+ goto end;
+ }
+
+ s->next = SigInit(de_ctx, "alert tcp any any -> any any "
+ "(msg:\"Testing bytejump_body\"; "
+ "content:\"one\"; pcre:/bamboo/; sid:1;)");
+ if (s->next == NULL) {
+ result = 0;
+ goto end;
+ }
+ s = s->next;
+ if (s->sm_lists_tail[DETECT_SM_LIST_DMATCH] != NULL) {
+ result = 0;
+ goto end;
+ }
+
+ end:
+ SigGroupCleanup(de_ctx);
+ SigCleanSignatures(de_ctx);
+ DetectEngineCtxFree(de_ctx);
+
+ return result;
+}
+
+/**
+ * \test Test pcre option with file data. pcre is relative to file_data,
+ * so relative flag should be unset.
+ */
+static int DetectPcreParseTest12(void)
+{
+ DetectEngineCtx *de_ctx = NULL;
+ int result = 0;
+ Signature *s = NULL;
+ DetectPcreData *data = NULL;
+
+ de_ctx = DetectEngineCtxInit();
+ if (de_ctx == NULL)
+ goto end;
+
+ de_ctx->flags |= DE_QUIET;
+ de_ctx->sig_list = SigInit(de_ctx, "alert tcp any any -> any any "
+ "(file_data; pcre:/abc/R; sid:1;)");
+ if (de_ctx->sig_list == NULL) {
+ printf("sig parse failed: ");
+ goto end;
+ }
+
+ s = de_ctx->sig_list;
+ if (s->sm_lists_tail[DETECT_SM_LIST_FILEDATA] == NULL) {
+ printf("empty server body list: ");
+ goto end;
+ }
+
+ if (s->sm_lists_tail[DETECT_SM_LIST_FILEDATA]->type != DETECT_PCRE) {
+ printf("last sm not pcre: ");
+ goto end;
+ }
+
+ data = (DetectPcreData *)s->sm_lists_tail[DETECT_SM_LIST_FILEDATA]->ctx;
+ if (data->flags & DETECT_PCRE_RAWBYTES ||
+ !(data->flags & DETECT_PCRE_RELATIVE)) {
+ printf("flags not right: ");
+ goto end;
+ }
+
+ result = 1;
+ end:
+ SigGroupCleanup(de_ctx);
+ SigCleanSignatures(de_ctx);
+ DetectEngineCtxFree(de_ctx);
+
+ return result;
+}
+
+/**
+ * \test Test pcre option with file data.
+ */
+static int DetectPcreParseTest13(void)
+{
+ DetectEngineCtx *de_ctx = NULL;
+ int result = 0;
+ Signature *s = NULL;
+ DetectPcreData *data = NULL;
+
+ de_ctx = DetectEngineCtxInit();
+ if (de_ctx == NULL)
+ goto end;
+
+ de_ctx->flags |= DE_QUIET;
+ de_ctx->sig_list = SigInit(de_ctx, "alert tcp any any -> any any "
+ "(file_data; content:\"abc\"; pcre:/def/R; sid:1;)");
+ if (de_ctx->sig_list == NULL) {
+ printf("sig parse failed: ");
+ goto end;
+ }
+
+ s = de_ctx->sig_list;
+ if (s->sm_lists_tail[DETECT_SM_LIST_FILEDATA] == NULL) {
+ printf("empty server body list: ");
+ goto end;
+ }
+
+ if (s->sm_lists_tail[DETECT_SM_LIST_FILEDATA]->type != DETECT_PCRE) {
+ printf("last sm not pcre: ");
+ goto end;
+ }
+
+ data = (DetectPcreData *)s->sm_lists_tail[DETECT_SM_LIST_FILEDATA]->ctx;
+ if (data->flags & DETECT_PCRE_RAWBYTES ||
+ !(data->flags & DETECT_PCRE_RELATIVE)) {
+ printf("flags not right: ");
+ goto end;
+ }
+
+ result = 1;
+ end:
+ SigGroupCleanup(de_ctx);
+ SigCleanSignatures(de_ctx);
+ DetectEngineCtxFree(de_ctx);
+
+ return result;
+}
+
+/**
+ * \test Test pcre option with file data.
+ */
+static int DetectPcreParseTest14(void)
+{
+ DetectEngineCtx *de_ctx = NULL;
+ int result = 0;
+ Signature *s = NULL;
+ DetectPcreData *data = NULL;
+
+ de_ctx = DetectEngineCtxInit();
+ if (de_ctx == NULL)
+ goto end;
+
+ de_ctx->flags |= DE_QUIET;
+ de_ctx->sig_list = SigInit(de_ctx, "alert tcp any any -> any any "
+ "(file_data; pcre:/def/; sid:1;)");
+ if (de_ctx->sig_list == NULL) {
+ printf("sig parse failed: ");
+ goto end;
+ }
+
+ s = de_ctx->sig_list;
+ if (s->sm_lists_tail[DETECT_SM_LIST_FILEDATA] == NULL) {
+ printf("empty server body list: ");
+ goto end;
+ }
+
+ if (s->sm_lists_tail[DETECT_SM_LIST_FILEDATA]->type != DETECT_PCRE) {
+ printf("last sm not pcre: ");
+ goto end;
+ }
+
+ data = (DetectPcreData *)s->sm_lists_tail[DETECT_SM_LIST_FILEDATA]->ctx;
+ if (data->flags & DETECT_PCRE_RAWBYTES ||
+ data->flags & DETECT_PCRE_RELATIVE) {
+ printf("flags not right: ");
+ goto end;
+ }
+
+ result = 1;
+ end:
+ SigGroupCleanup(de_ctx);
+ SigCleanSignatures(de_ctx);
+ DetectEngineCtxFree(de_ctx);
+
+ return result;
+}
+
+/** \test Check a signature with pcre relative method */
+int DetectPcreParseTest15(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 pcre relative http_method\"; "
+ "content:\"GET\"; "
+ "http_method; pcre:\"/abc/RM\"; sid:1;)");
+
+ if (de_ctx->sig_list != NULL) {
+ result = 1;
+ } else {
+ printf("sig parse failed: ");
+ }
+
+ end:
+ if (de_ctx != NULL)
+ SigCleanSignatures(de_ctx);
+ if (de_ctx != NULL)
+ DetectEngineCtxFree(de_ctx);
+ return result;
+}
+
+
+/** \test Check a signature with pcre relative cookie */
+int DetectPcreParseTest16(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 pcre relative http_cookie\"; "
+ "content:\"test\"; "
+ "http_cookie; pcre:\"/abc/RC\"; sid:1;)");
+
+ if (de_ctx->sig_list != NULL) {
+ result = 1;
+ } else {
+ printf("sig parse failed: ");
+ }
+
+ end:
+ if (de_ctx != NULL)
+ SigCleanSignatures(de_ctx);
+ if (de_ctx != NULL)
+ DetectEngineCtxFree(de_ctx);
+ return result;
+}
+
+/** \test Check a signature with pcre relative raw header */
+int DetectPcreParseTest17(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 pcre relative http_raw_header\"; "
+ "flow:to_server; content:\"test\"; "
+ "http_raw_header; pcre:\"/abc/RD\"; sid:1;)");
+
+ if (de_ctx->sig_list != NULL) {
+ result = 1;
+ } else {
+ printf("sig parse failed: ");
+ }
+
+ end:
+ if (de_ctx != NULL)
+ SigCleanSignatures(de_ctx);
+ if (de_ctx != NULL)
+ DetectEngineCtxFree(de_ctx);
+ return result;
+}
+
+/** \test Check a signature with pcre relative header */
+int DetectPcreParseTest18(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 pcre relative http_header\"; "
+ "content:\"test\"; "
+ "http_header; pcre:\"/abc/RH\"; sid:1;)");
+
+ if (de_ctx->sig_list != NULL) {
+ result = 1;
+ } else {
+ printf("sig parse failed: ");
+ }
+
+ end:
+ if (de_ctx != NULL)
+ SigCleanSignatures(de_ctx);
+ if (de_ctx != NULL)
+ DetectEngineCtxFree(de_ctx);
+ return result;
+}
+
+/** \test Check a signature with pcre relative client-body */
+int DetectPcreParseTest19(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 pcre relativie http_client_body\"; "
+ "content:\"test\"; "
+ "http_client_body; pcre:\"/abc/RP\"; sid:1;)");
+
+ if (de_ctx->sig_list != NULL) {
+ result = 1;
+ } else {
+ printf("sig parse failed: ");
+ }
+
+ end:
+ if (de_ctx != NULL)
+ SigCleanSignatures(de_ctx);
+ if (de_ctx != NULL)
+ DetectEngineCtxFree(de_ctx);
+ return result;
+}
+
+/** \test Check a signature with pcre relative raw uri */
+int DetectPcreParseTest20(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_raw_uri\"; "
+ "content:\"test\"; "
+ "http_raw_uri; pcre:\"/abc/RI\"; sid:1;)");
+
+ if (de_ctx->sig_list != NULL) {
+ result = 1;
+ } else {
+ printf("sig parse failed: ");
+ }
+
+ end:
+ if (de_ctx != NULL)
+ SigCleanSignatures(de_ctx);
+ if (de_ctx != NULL)
+ DetectEngineCtxFree(de_ctx);
+ return result;
+}
+
+/** \test Check a signature with pcre relative uricontent */
+int DetectPcreParseTest21(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 pcre relative uricontent\"; "
+ "uricontent:\"test\"; "
+ "pcre:\"/abc/RU\"; sid:1;)");
+
+ if (de_ctx->sig_list != NULL) {
+ result = 1;
+ } else {
+ printf("sig parse failed: ");
+ }
+
+ end:
+ if (de_ctx != NULL)
+ SigCleanSignatures(de_ctx);
+ if (de_ctx != NULL)
+ DetectEngineCtxFree(de_ctx);
+ return result;
+}
+
+/** \test Check a signature with pcre relative http_uri */
+int DetectPcreParseTest22(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 pcre relative http_uri\"; "
+ "content:\"test\"; "
+ "http_uri; pcre:\"/abc/RU\"; sid:1;)");
+
+ if (de_ctx->sig_list != NULL) {
+ result = 1;
+ } else {
+ printf("sig parse failed: ");
+ }
+
+ end:
+ if (de_ctx != NULL)
+ SigCleanSignatures(de_ctx);
+ if (de_ctx != NULL)
+ DetectEngineCtxFree(de_ctx);
+ return result;
+}
+
+/** \test Check a signature with inconsistent pcre relative */
+int DetectPcreParseTest23(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 inconsistent pcre relative\"; "
+ "content:\"GET\"; "
+ "http_cookie; pcre:\"/abc/RM\"; sid:1;)");
+
+ if (de_ctx->sig_list == NULL) {
+ result = 1;
+ } else {
+ printf("sig parse shouldn't have failed: ");
+ }
+
+ end:
+ if (de_ctx != NULL)
+ SigCleanSignatures(de_ctx);
+ if (de_ctx != NULL)
+ DetectEngineCtxFree(de_ctx);
+ return result;
+}
+
+/** \test Check a signature with inconsistent pcre modifiers */
+int DetectPcreParseTest24(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 inconsistent pcre modifiers\"; "
+ "pcre:\"/abc/UI\"; sid:1;)");
+
+ if (de_ctx->sig_list == NULL) {
+ result = 1;
+ } else {
+ printf("sig parse should have failed: ");
+ }
+
+ end:
+ if (de_ctx != NULL)
+ SigCleanSignatures(de_ctx);
+ if (de_ctx != NULL)
+ DetectEngineCtxFree(de_ctx);
+ return result;
+}
+
+/** \test Check a signature with inconsistent pcre modifiers */
+int DetectPcreParseTest25(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 inconsistent pcre modifiers\"; "
+ "pcre:\"/abc/DH\"; sid:1;)");
+
+ if (de_ctx->sig_list == NULL) {
+ result = 1;
+ } else {
+ printf("sig parse should have failed: ");
+ }
+
+ end:
+ if (de_ctx != NULL)
+ SigCleanSignatures(de_ctx);
+ if (de_ctx != NULL)
+ DetectEngineCtxFree(de_ctx);
+ return result;
+}
+
+/** \test Check a signature with inconsistent pcre modifiers */
+static int DetectPcreParseTest26(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 http any any -> any any "
+ "(msg:\"Testing inconsistent pcre modifiers\"; "
+ "pcre:\"/abc/F\"; sid:1;)");
+
+ if (de_ctx->sig_list == NULL) {
+ result = 1;
+ } else {
+ printf("sig parse should have failed: ");
+ }
+
+ end:
+ if (de_ctx != NULL)
+ SigCleanSignatures(de_ctx);
+ if (de_ctx != NULL)
+ DetectEngineCtxFree(de_ctx);
+ return result;
+}
+
+/** \test Bug 1098 */
+static int DetectPcreParseTest27(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 80 "
+ "(content:\"baduricontent\"; http_raw_uri; "
+ "pcre:\"/^[a-z]{5}\\.html/R\"; sid:2; rev:2;)");
+
+ if (de_ctx->sig_list == NULL) {
+ result = 1;
+ } else {
+ printf("sig parse should have failed: ");
+ }
+
+ end:
+ if (de_ctx != NULL)
+ SigCleanSignatures(de_ctx);
+ if (de_ctx != NULL)
+ DetectEngineCtxFree(de_ctx);
+ return result;
+}
+
+static int DetectPcreTestSig01Real(int mpm_type)
+{
+ uint8_t *buf = (uint8_t *)
+ "GET /one/ HTTP/1.1\r\n"
+ "Host: one.example.org\r\n"
+ "\r\n\r\n"
+ "GET /two/ HTTP/1.1\r\n"
+ "Host: two.example.org\r\n"
+ "\r\n\r\n";
+ uint16_t buflen = strlen((char *)buf);
+ TcpSession ssn;
+ Packet *p = NULL;
+ ThreadVars th_v;
+ DetectEngineThreadCtx *det_ctx = NULL;
+ int result = 0;
+ Flow f;
+ AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
+
+ memset(&f, 0, sizeof(f));
+ memset(&th_v, 0, sizeof(th_v));
+ memset(&ssn, 0, sizeof(TcpSession));
+
+ FLOW_INITIALIZE(&f);
+ f.protoctx = (void *)&ssn;
+ f.proto = IPPROTO_TCP;
+ f.flags |= FLOW_IPV4;
+ f.alproto = ALPROTO_HTTP;
+
+ p = UTHBuildPacket(buf, buflen, IPPROTO_TCP);
+ p->flow = &f;
+ p->flowflags |= FLOW_PKT_TOSERVER;
+ p->flowflags |= FLOW_PKT_ESTABLISHED;
+ p->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
+
+ StreamTcpInitConfig(TRUE);
+
+ DetectEngineCtx *de_ctx = DetectEngineCtxInit();
+ if (de_ctx == NULL) {
+ goto end;
+ }
+
+ de_ctx->mpm_matcher = mpm_type;
+ de_ctx->flags |= DE_QUIET;
+
+ de_ctx->sig_list = SigInit(de_ctx,"alert tcp any any -> any any (msg:\"HTTP TEST\"; pcre:\"/^gEt/i\"; pcre:\"/\\/two\\//U; pcre:\"/GET \\/two\\//\"; pcre:\"/\\s+HTTP/R\"; sid:1;)");
+ if (de_ctx->sig_list == NULL) {
+ result = 0;
+ goto end;
+ }
+
+ SigGroupBuild(de_ctx);
+ DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
+
+ SCMutexLock(&f.m);
+ int r = AppLayerParserParse(alp_tctx, &f, ALPROTO_HTTP, STREAM_TOSERVER|STREAM_START, buf, buflen);
+ if (r != 0) {
+ printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
+ result = 0;
+ SCMutexUnlock(&f.m);
+ goto end;
+ }
+ SCMutexUnlock(&f.m);
+ SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
+ if (PacketAlertCheck(p, 1) == 1) {
+ result = 1;
+ }
+
+end:
+ if (alp_tctx != NULL)
+ AppLayerParserThreadCtxFree(alp_tctx);
+ SigGroupCleanup(de_ctx);
+ SigCleanSignatures(de_ctx);
+
+ DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
+ DetectEngineCtxFree(de_ctx);
+
+ StreamTcpFreeConfig(TRUE);
+
+ FLOW_DESTROY(&f);
+
+ UTHFreePackets(&p, 1);
+ return result;
+}
+static int DetectPcreTestSig01B2g (void)
+{
+ return DetectPcreTestSig01Real(MPM_B2G);
+}
+static int DetectPcreTestSig01B3g (void)
+{
+ return DetectPcreTestSig01Real(MPM_B3G);
+}
+static int DetectPcreTestSig01Wm (void)
+{
+ return DetectPcreTestSig01Real(MPM_WUMANBER);
+}
+
+static int DetectPcreTestSig02Real(int mpm_type)
+{
+ uint8_t *buf = (uint8_t *)
+ "GET /one/ HTTP/1.1\r\n"
+ "Host: one.example.org\r\n"
+ "\r\n\r\n"
+ "GET /two/ HTTP/1.1\r\n"
+ "Host: two.example.org\r\n"
+ "\r\n\r\n";
+ uint16_t buflen = strlen((char *)buf);
+ Packet *p = NULL;
+ Flow f;
+ ThreadVars th_v;
+ DetectEngineThreadCtx *det_ctx;
+ int result = 0;
+
+ memset(&th_v, 0, sizeof(th_v));
+ memset(&f, 0, sizeof(f));
+
+ FLOW_INITIALIZE(&f);
+
+ p = UTHBuildPacket(buf, buflen, IPPROTO_TCP);
+ p->flow = &f;
+ p->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
+
+ pcre_match_limit = 100;
+ pcre_match_limit_recursion = 100;
+
+ DetectEngineCtx *de_ctx = DetectEngineCtxInit();
+ if (de_ctx == NULL) {
+ goto end;
+ }
+
+ de_ctx->mpm_matcher = mpm_type;
+ de_ctx->flags |= DE_QUIET;
+
+ de_ctx->sig_list = SigInit(de_ctx,"alert tcp any any -> any any (msg:\"HTTP TEST\"; pcre:\"/two/O\"; sid:2;)");
+ if (de_ctx->sig_list == NULL) {
+ result = 0;
+ goto end;
+ }
+
+ SigGroupBuild(de_ctx);
+ DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
+
+ SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
+ if (PacketAlertCheck(p, 2) == 1) {
+ result = 1;
+ }
+
+ SigGroupCleanup(de_ctx);
+ SigCleanSignatures(de_ctx);
+
+ DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
+ DetectEngineCtxFree(de_ctx);
+ FLOW_DESTROY(&f);
+end:
+ UTHFreePackets(&p, 1);
+ return result;
+}
+static int DetectPcreTestSig02B2g (void)
+{
+ return DetectPcreTestSig02Real(MPM_B2G);
+}
+static int DetectPcreTestSig02B3g (void)
+{
+ return DetectPcreTestSig02Real(MPM_B3G);
+}
+static int DetectPcreTestSig02Wm (void)
+{
+ return DetectPcreTestSig02Real(MPM_WUMANBER);
+}
+
+/**
+ * \test DetectPcreTestSig03Real negation test ! outside of "" this sig should not match
+ */
+static int DetectPcreTestSig03Real(int mpm_type)
+{
+ uint8_t *buf = (uint8_t *)
+ "GET /one/ HTTP/1.1\r\n"
+ "Host: one.example.org\r\n"
+ "\r\n\r\n"
+ "GET /two/ HTTP/1.1\r\n"
+ "Host: two.example.org\r\n"
+ "\r\n\r\n";
+ uint16_t buflen = strlen((char *)buf);
+ Packet *p = NULL;
+ ThreadVars th_v;
+ DetectEngineThreadCtx *det_ctx;
+ int result = 1;
+
+ memset(&th_v, 0, sizeof(th_v));
+
+ p = UTHBuildPacket(buf, buflen, IPPROTO_TCP);
+
+ DetectEngineCtx *de_ctx = DetectEngineCtxInit();
+ if (de_ctx == NULL) {
+ result = 0;
+ goto end;
+ }
+
+ de_ctx->mpm_matcher = mpm_type;
+ de_ctx->flags |= DE_QUIET;
+
+ de_ctx->sig_list = SigInit(de_ctx,"alert tcp any any -> any any (msg:\"HTTP TEST\"; content:\"GET\"; pcre:!\"/two/\"; sid:1;)");
+ if (de_ctx->sig_list == NULL) {
+ result = 0;
+ goto end;
+ }
+
+ SigGroupBuild(de_ctx);
+ DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
+
+ SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
+ if (PacketAlertCheck(p, 1)){
+ printf("sid 1 matched even though it shouldn't have:");
+ result = 0;
+ }
+ SigGroupCleanup(de_ctx);
+ SigCleanSignatures(de_ctx);
+
+ DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
+ DetectEngineCtxFree(de_ctx);
+end:
+ UTHFreePackets(&p, 1);
+ return result;
+}
+
+static int DetectPcreTestSig03B2g (void)
+{
+ return DetectPcreTestSig03Real(MPM_B2G);
+}
+static int DetectPcreTestSig03B3g (void)
+{
+ return DetectPcreTestSig03Real(MPM_B3G);
+}
+static int DetectPcreTestSig03Wm (void)
+{
+ return DetectPcreTestSig03Real(MPM_WUMANBER);
+}
+
+/**
+ * \test Check the signature with pcre modifier P (match with L7 to http body data)
+ */
+static int DetectPcreModifPTest04(void)
+{
+ int result = 0;
+ uint8_t httpbuf1[] =
+ "GET / HTTP/1.1\r\n"
+ "Host: www.emergingthreats.net\r\n"
+ "User-Agent: Mozilla/5.0 (X11; U; Linux i686; es-ES; rv:1.9.0.13) Gecko/2009080315 Ubuntu/8.10 (intrepid) Firefox/3.0.13\r\n"
+ "Accept: text/html,application/xhtml+xml,application/xml;q=0.9;q=0.8\r\n"
+ "Accept-Language: es-es,es;q=0.8,en-us;q=0.5,en;q=0.3\r\n"
+ "Accept-Encoding: gzip,deflate\r\n"
+ "Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7\r\n"
+ "Date: Tue, 22 Sep 2009 19:24:48 GMT\r\n"
+ "Server: Apache\r\n"
+ "X-Powered-By: PHP/5.2.5\r\n"
+ "P3P: CP=\"NOI ADM DEV PSAi COM NAV OUR OTRo STP IND DEM\"\r\n"
+ "Expires: Mon, 1 Jan 2001 00:00:00 GMT\r\n"
+ "Last-Modified: Tue, 22 Sep 2009 19:24:48 GMT\r\n"
+ "Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0\r\n"
+ "Pragma: no-cache\r\n"
+ "Keep-Alive: timeout=15, max=100\r\n"
+ "Connection: Keep-Alive\r\n"
+ "Transfer-Encoding: chunked\r\n"
+ "Content-Type: text/html; charset=utf-8\r\n"
+ "\r\n"
+ "15"
+ "\r\n"
+ "<!DOCTYPE html PUBLIC\r\n"
+ "0\r\n\r\n";
+
+ uint32_t httplen1 = sizeof(httpbuf1) - 1; /* minus the \0 */
+ TcpSession ssn;
+ Packet *p = NULL;
+ Flow f;
+ Signature *s = NULL;
+ ThreadVars th_v;
+ DetectEngineThreadCtx *det_ctx;
+ AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
+
+ memset(&th_v, 0, sizeof(th_v));
+ memset(&f, 0, sizeof(f));
+ memset(&ssn, 0, sizeof(ssn));
+
+ p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
+
+ FLOW_INITIALIZE(&f);
+ f.protoctx = (void *)&ssn;
+ f.proto = IPPROTO_TCP;
+ f.flags |= FLOW_IPV4;
+
+ p->flow = &f;
+ p->flowflags |= FLOW_PKT_TOSERVER;
+ p->flowflags |= FLOW_PKT_ESTABLISHED;
+ p->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
+ f.alproto = ALPROTO_HTTP;
+
+ StreamTcpInitConfig(TRUE);
+
+ DetectEngineCtx *de_ctx = DetectEngineCtxInit();
+ if (de_ctx == NULL) {
+ goto end;
+ }
+
+ de_ctx->flags |= DE_QUIET;
+
+ s = de_ctx->sig_list = SigInit(de_ctx,"alert http any any -> any any (msg:"
+ "\"Pcre modifier P\"; pcre:\"/DOCTYPE/P\"; "
+ "sid:1;)");
+ if (s == NULL) {
+ goto end;
+ }
+
+ s->next = SigInit(de_ctx,"alert http any any -> any any (msg:\""
+ "Pcre modifier P (no match)\"; pcre:\"/blah/P\"; sid:2;)");
+ if (s->next == NULL) {
+ goto end;
+ }
+
+ SigGroupBuild(de_ctx);
+ DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
+
+ SCMutexLock(&f.m);
+ int r = AppLayerParserParse(alp_tctx, &f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf1, httplen1);
+ if (r != 0) {
+ printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
+ result = 0;
+ SCMutexUnlock(&f.m);
+ goto end;
+ }
+ SCMutexUnlock(&f.m);
+
+ HtpState *http_state = f.alstate;
+ if (http_state == NULL) {
+ printf("no http state: ");
+ result = 0;
+ goto end;
+ }
+
+ /* do detect */
+ SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
+
+ if (!(PacketAlertCheck(p, 1))) {
+ printf("sid 1 didn't match but should have: ");
+ goto end;
+ }
+ if (PacketAlertCheck(p, 2)) {
+ printf("sid 2 matched but shouldn't: ");
+ goto end;
+ }
+
+ result = 1;
+end:
+ if (alp_tctx != NULL)
+ AppLayerParserThreadCtxFree(alp_tctx);
+ if (de_ctx != NULL) SigGroupCleanup(de_ctx);
+ if (de_ctx != NULL) SigCleanSignatures(de_ctx);
+ if (de_ctx != NULL) DetectEngineCtxFree(de_ctx);
+
+ StreamTcpFreeConfig(TRUE);
+ FLOW_DESTROY(&f);
+ UTHFreePackets(&p, 1);
+ return result;
+}
+
+/**
+ * \test Check the signature with pcre modifier P (match with L7 to http body data)
+ * over fragmented chunks (DOCTYPE fragmented)
+ */
+static int DetectPcreModifPTest05(void)
+{
+ int result = 0;
+ uint8_t httpbuf1[] =
+ "GET / HTTP/1.1\r\n"
+ "Host: www.emergingthreats.net\r\n"
+ "User-Agent: Mozilla/5.0 (X11; U; Linux i686; es-ES; rv:1.9.0.13) Gecko/2009080315 Ubuntu/8.10 (intrepid) Firefox/3.0.13\r\n"
+ "Accept: text/html,application/xhtml+xml,application/xml;q=0.9;q=0.8\r\n"
+ "Accept-Language: es-es,es;q=0.8,en-us;q=0.5,en;q=0.3\r\n"
+ "Accept-Encoding: gzip,deflate\r\n"
+ "Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7\r\n"
+ "Date: Tue, 22 Sep 2009 19:24:48 GMT\r\n"
+ "Server: Apache\r\n"
+ "X-Powered-By: PHP/5.2.5\r\n"
+ "P3P: CP=\"NOI ADM DEV PSAi COM NAV OUR OTRo STP IND DEM\"\r\n"
+ "Expires: Mon, 1 Jan 2001 00:00:00 GMT\r\n"
+ "Last-Modified: Tue, 22 Sep 2009 19:24:48 GMT\r\n"
+ "Cache-Control: no-store, no-cache, must-revalidate, post-check=0, pre-check=0\r\n"
+ "Pragma: no-cache\r\n"
+ "Keep-Alive: timeout=15, max=100\r\n"
+ "Connection: Keep-Alive\r\n"
+ "Transfer-Encoding: chunked\r\n"
+ "Content-Type: text/html; charset=utf-8\r\n"
+ "\r\n"
+ "15"
+ "\r\n"
+ "<!DOC";
+
+ uint8_t httpbuf2[] = "<!DOCTYPE html PUBLIC\r\n0\r\n\r\n";
+
+ uint32_t httplen1 = sizeof(httpbuf1) - 1; /* minus the \0 */
+ uint32_t httplen2 = sizeof(httpbuf2) - 1; /* minus the \0 */
+ TcpSession ssn;
+ Packet *p1 = NULL;
+ Packet *p2 = NULL;
+ Flow f;
+ Signature *s = NULL;
+ ThreadVars th_v;
+ DetectEngineThreadCtx *det_ctx;
+ AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
+
+ memset(&th_v, 0, sizeof(th_v));
+ memset(&f, 0, sizeof(f));
+ memset(&ssn, 0, sizeof(ssn));
+
+ p1 = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
+ p2 = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
+
+ FLOW_INITIALIZE(&f);
+ f.protoctx = (void *)&ssn;
+ f.proto = IPPROTO_TCP;
+ f.flags |= FLOW_IPV4;
+
+ p1->flow = &f;
+ p1->flowflags |= FLOW_PKT_TOSERVER;
+ p1->flowflags |= FLOW_PKT_ESTABLISHED;
+ p1->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
+ p2->flow = &f;
+ p2->flowflags |= FLOW_PKT_TOSERVER;
+ p2->flowflags |= FLOW_PKT_ESTABLISHED;
+ p2->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
+ f.alproto = ALPROTO_HTTP;
+
+ StreamTcpInitConfig(TRUE);
+
+ DetectEngineCtx *de_ctx = DetectEngineCtxInit();
+ if (de_ctx == NULL) {
+ goto end;
+ }
+
+ de_ctx->flags |= DE_QUIET;
+
+ s = de_ctx->sig_list = SigInit(de_ctx,"alert http any any -> any any (msg:"
+ "\"Pcre modifier P\"; pcre:\"/DOC/P\"; "
+ "sid:1;)");
+ if (s == NULL) {
+ goto end;
+ }
+
+ s->next = SigInit(de_ctx,"alert http any any -> any any (msg:\""
+ "Pcre modifier P (no match)\"; pcre:\"/DOCTYPE/P\"; sid:2;)");
+ if (s->next == NULL) {
+ goto end;
+ }
+
+ SigGroupBuild(de_ctx);
+ DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
+
+ SCMutexLock(&f.m);
+ int r = AppLayerParserParse(alp_tctx, &f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf1, httplen1);
+ if (r != 0) {
+ printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
+ result = 0;
+ SCMutexUnlock(&f.m);
+ goto end;
+ }
+ SCMutexUnlock(&f.m);
+
+ /* do detect for p1 */
+ SigMatchSignatures(&th_v, de_ctx, det_ctx, p1);
+
+ HtpState *http_state = f.alstate;
+ if (http_state == NULL) {
+ printf("no http state: ");
+ result = 0;
+ goto end;
+ }
+
+ if (PacketAlertCheck(p1, 1)) {
+ printf("sid 1 didn't match on p1 but should have: ");
+ goto end;
+ }
+
+ if (PacketAlertCheck(p1, 2)) {
+ printf("sid 2 did match on p1 but shouldn't have: ");
+ /* It's a partial match over 2 chunks*/
+ goto end;
+ }
+
+ SCMutexLock(&f.m);
+ r = AppLayerParserParse(alp_tctx, &f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf2, httplen2);
+ if (r != 0) {
+ printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
+ result = 0;
+ SCMutexUnlock(&f.m);
+ goto end;
+ }
+ SCMutexUnlock(&f.m);
+
+ /* do detect for p2 */
+ SigMatchSignatures(&th_v, de_ctx, det_ctx, p2);
+
+ if (!(PacketAlertCheck(p2, 1))) {
+ printf("sid 1 did match on p2 but should have: ");
+ goto end;
+ }
+
+ if (!(PacketAlertCheck(p2, 2))) {
+ printf("sid 2 didn't match on p2 but should have: ");
+ /* It's a partial match over 2 chunks*/
+ goto end;
+ }
+
+ result = 1;
+end:
+ if (alp_tctx != NULL)
+ AppLayerParserThreadCtxFree(alp_tctx);
+ if (de_ctx != NULL) SigGroupCleanup(de_ctx);
+ if (de_ctx != NULL) SigCleanSignatures(de_ctx);
+ if (de_ctx != NULL) DetectEngineCtxFree(de_ctx);
+
+ StreamTcpFreeConfig(TRUE);
+ FLOW_DESTROY(&f);
+ UTHFreePackets(&p1, 1);
+ UTHFreePackets(&p2, 1);
+ return result;
+}
+
+int DetectPcreTestSig06()
+{
+ uint8_t *buf = (uint8_t *)
+ "lalala lalala\\ lala\n";
+ uint16_t buflen = strlen((char *)buf);
+ Packet *p = UTHBuildPacket( buf, buflen, IPPROTO_TCP);
+ int result = 0;
+
+ char sig[] = "alert tcp any any -> any any (msg:\"pcre with an ending slash\"; pcre:\"/ lalala\\\\/\"; sid:1;)";
+ if (UTHPacketMatchSig(p, sig) == 0) {
+ result = 0;
+ goto end;
+ }
+ result = 1;
+end:
+ if (p != NULL)
+ UTHFreePacket(p);
+ return result;
+}
+
+/** \test anchored pcre */
+int DetectPcreTestSig07()
+{
+ uint8_t *buf = (uint8_t *)
+ "lalala\n";
+ uint16_t buflen = strlen((char *)buf);
+ Packet *p = UTHBuildPacket( buf, buflen, IPPROTO_TCP);
+ int result = 0;
+
+ char sig[] = "alert tcp any any -> any any (msg:\"pcre with an ending slash\"; pcre:\"/^(la)+$/\"; sid:1;)";
+ if (UTHPacketMatchSig(p, sig) == 0) {
+ result = 0;
+ goto end;
+ }
+ result = 1;
+end:
+ if (p != NULL)
+ UTHFreePacket(p);
+ return result;
+}
+
+/** \test anchored pcre */
+int DetectPcreTestSig08()
+{
+ /* test it also without ending in a newline "\n" */
+ uint8_t *buf = (uint8_t *)
+ "lalala";
+ uint16_t buflen = strlen((char *)buf);
+ Packet *p = UTHBuildPacket( buf, buflen, IPPROTO_TCP);
+ int result = 0;
+
+ char sig[] = "alert tcp any any -> any any (msg:\"pcre with an ending slash\"; pcre:\"/^(la)+$/\"; sid:1;)";
+ if (UTHPacketMatchSig(p, sig) == 0) {
+ result = 0;
+ goto end;
+ }
+ result = 1;
+end:
+ if (p != NULL)
+ UTHFreePacket(p);
+ return result;
+}
+
+/** \test Check the signature working to alert when cookie modifier is
+ * passed to pcre
+ */
+static int DetectPcreTestSig09(void)
+{
+ int result = 0;
+ Flow f;
+ uint8_t httpbuf1[] = "POST / HTTP/1.0\r\nUser-Agent: Mozilla/1.0\r\n"
+ "Cookie: dummy\r\n\r\n";
+ uint32_t httplen1 = sizeof(httpbuf1) - 1; /* minus the \0 */
+ TcpSession ssn;
+ Packet *p = NULL;
+ Signature *s = NULL;
+ ThreadVars th_v;
+ DetectEngineThreadCtx *det_ctx = NULL;
+ HtpState *http_state = NULL;
+ AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
+
+ memset(&th_v, 0, sizeof(th_v));
+ memset(&p, 0, sizeof(p));
+ memset(&f, 0, sizeof(f));
+ memset(&ssn, 0, sizeof(ssn));
+
+ p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
+
+ FLOW_INITIALIZE(&f);
+ f.protoctx = (void *)&ssn;
+ f.proto = IPPROTO_TCP;
+ f.flags |= FLOW_IPV4;
+
+ p->flow = &f;
+ p->flowflags |= FLOW_PKT_TOSERVER;
+ p->flowflags |= FLOW_PKT_ESTABLISHED;
+ p->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
+ f.alproto = ALPROTO_HTTP;
+
+ StreamTcpInitConfig(TRUE);
+
+ DetectEngineCtx *de_ctx = DetectEngineCtxInit();
+ if (de_ctx == NULL) {
+ goto end;
+ }
+
+ de_ctx->flags |= DE_QUIET;
+
+ s = de_ctx->sig_list = SigInit(de_ctx,"alert http any any -> any any (msg:"
+ "\"HTTP cookie\"; pcre:\"/dummy/C\"; "
+ " sid:1;)");
+ if (s == NULL) {
+ printf("sig parse failed: ");
+ goto end;
+ }
+
+ SigGroupBuild(de_ctx);
+ DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
+
+ SCMutexLock(&f.m);
+ int r = AppLayerParserParse(alp_tctx, &f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf1, httplen1);
+ if (r != 0) {
+ printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
+ SCMutexUnlock(&f.m);
+ goto end;
+ }
+ SCMutexUnlock(&f.m);
+
+ http_state = f.alstate;
+ if (http_state == NULL) {
+ printf("no http state: ");
+ goto end;
+ }
+
+ /* do detect */
+ SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
+
+ if (!PacketAlertCheck(p, 1)) {
+ printf("sig 1 failed to match: ");
+ goto end;
+ }
+
+ result = 1;
+end:
+ if (alp_tctx != NULL)
+ AppLayerParserThreadCtxFree(alp_tctx);
+ if (det_ctx != NULL) {
+ DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
+ }
+ if (de_ctx != NULL) {
+ SigGroupCleanup(de_ctx);
+ DetectEngineCtxFree(de_ctx);
+ }
+
+ StreamTcpFreeConfig(TRUE);
+ UTHFreePackets(&p, 1);
+ return result;
+}
+
+/** \test Check the signature working to alert when cookie modifier is
+ * passed to a negated pcre
+ */
+static int DetectPcreTestSig10(void)
+{
+ int result = 0;
+ Flow f;
+ uint8_t httpbuf1[] = "POST / HTTP/1.0\r\nUser-Agent: Mozilla/1.0\r\n"
+ "Cookie: dummoOOooooO\r\n\r\n";
+ uint32_t httplen1 = sizeof(httpbuf1) - 1; /* minus the \0 */
+ TcpSession ssn;
+ Packet *p = NULL;
+ Signature *s = NULL;
+ ThreadVars th_v;
+ DetectEngineThreadCtx *det_ctx = NULL;
+ HtpState *http_state = NULL;
+ AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
+
+ memset(&th_v, 0, sizeof(th_v));
+ memset(&p, 0, sizeof(p));
+ memset(&f, 0, sizeof(f));
+ memset(&ssn, 0, sizeof(ssn));
+
+ p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
+
+ FLOW_INITIALIZE(&f);
+ f.protoctx = (void *)&ssn;
+ f.proto = IPPROTO_TCP;
+ f.flags |= FLOW_IPV4;
+
+ p->flow = &f;
+ p->flowflags |= FLOW_PKT_TOSERVER;
+ p->flowflags |= FLOW_PKT_ESTABLISHED;
+ p->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
+ f.alproto = ALPROTO_HTTP;
+
+ StreamTcpInitConfig(TRUE);
+
+ DetectEngineCtx *de_ctx = DetectEngineCtxInit();
+ if (de_ctx == NULL) {
+ goto end;
+ }
+
+ de_ctx->flags |= DE_QUIET;
+
+ s = de_ctx->sig_list = SigInit(de_ctx,"alert http any any -> any any (msg:"
+ "\"HTTP cookie\"; pcre:!\"/dummy/C\"; "
+ " sid:1;)");
+ if (s == NULL) {
+ printf("sig parse failed: ");
+ goto end;
+ }
+
+ SigGroupBuild(de_ctx);
+ DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
+
+ SCMutexLock(&f.m);
+ int r = AppLayerParserParse(alp_tctx, &f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf1, httplen1);
+ if (r != 0) {
+ printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
+ SCMutexUnlock(&f.m);
+ goto end;
+ }
+ SCMutexUnlock(&f.m);
+
+ http_state = f.alstate;
+ if (http_state == NULL) {
+ printf("no http state: ");
+ goto end;
+ }
+
+ /* do detect */
+ SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
+
+ if (!PacketAlertCheck(p, 1)) {
+ printf("sig 1 should match: ");
+ goto end;
+ }
+
+ result = 1;
+end:
+ if (alp_tctx != NULL)
+ AppLayerParserThreadCtxFree(alp_tctx);
+ if (det_ctx != NULL) {
+ DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
+ }
+ if (de_ctx != NULL) {
+ SigGroupCleanup(de_ctx);
+ DetectEngineCtxFree(de_ctx);
+ }
+
+ StreamTcpFreeConfig(TRUE);
+ UTHFreePackets(&p, 1);
+ return result;
+}
+
+/** \test Check the signature working to alert when method modifier is
+ * passed to pcre
+ */
+static int DetectPcreTestSig11(void)
+{
+ int result = 0;
+ Flow f;
+ uint8_t httpbuf1[] = "POST / HTTP/1.0\r\nUser-Agent: Mozilla/1.0\r\n"
+ "Cookie: dummy\r\n\r\n";
+ uint32_t httplen1 = sizeof(httpbuf1) - 1; /* minus the \0 */
+ TcpSession ssn;
+ Packet *p = NULL;
+ Signature *s = NULL;
+ ThreadVars th_v;
+ DetectEngineThreadCtx *det_ctx = NULL;
+ HtpState *http_state = NULL;
+ AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
+
+ memset(&th_v, 0, sizeof(th_v));
+ memset(&p, 0, sizeof(p));
+ memset(&f, 0, sizeof(f));
+ memset(&ssn, 0, sizeof(ssn));
+
+ p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
+
+ FLOW_INITIALIZE(&f);
+ f.protoctx = (void *)&ssn;
+ f.proto = IPPROTO_TCP;
+ f.flags |= FLOW_IPV4;
+
+ p->flow = &f;
+ p->flowflags |= FLOW_PKT_TOSERVER;
+ p->flowflags |= FLOW_PKT_ESTABLISHED;
+ p->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
+ f.alproto = ALPROTO_HTTP;
+
+ StreamTcpInitConfig(TRUE);
+
+ DetectEngineCtx *de_ctx = DetectEngineCtxInit();
+ if (de_ctx == NULL) {
+ goto end;
+ }
+
+ de_ctx->flags |= DE_QUIET;
+
+ s = de_ctx->sig_list = SigInit(de_ctx,"alert http any any -> any any (msg:"
+ "\"HTTP method\"; pcre:\"/POST/M\"; "
+ " sid:1;)");
+ if (s == NULL) {
+ printf("sig parse failed: ");
+ goto end;
+ }
+
+ SigGroupBuild(de_ctx);
+ DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
+
+ SCMutexLock(&f.m);
+ int r = AppLayerParserParse(alp_tctx, &f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf1, httplen1);
+ if (r != 0) {
+ printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
+ SCMutexUnlock(&f.m);
+ goto end;
+ }
+ SCMutexUnlock(&f.m);
+
+ http_state = f.alstate;
+ if (http_state == NULL) {
+ printf("no http state: ");
+ goto end;
+ }
+
+ /* do detect */
+ SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
+
+ if (!PacketAlertCheck(p, 1)) {
+ printf("sig 1 failed to match: ");
+ goto end;
+ }
+
+ result = 1;
+end:
+ if (alp_tctx != NULL)
+ AppLayerParserThreadCtxFree(alp_tctx);
+ if (det_ctx != NULL) {
+ DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
+ }
+ if (de_ctx != NULL) {
+ SigGroupCleanup(de_ctx);
+ DetectEngineCtxFree(de_ctx);
+ }
+
+ StreamTcpFreeConfig(TRUE);
+ UTHFreePackets(&p, 1);
+ return result;
+}
+
+/** \test Check the signature working to alert when method modifier is
+ * passed to a negated pcre
+ */
+static int DetectPcreTestSig12(void)
+{
+ int result = 0;
+ Flow f;
+ uint8_t httpbuf1[] = "GET / HTTP/1.0\r\nUser-Agent: Mozilla/1.0\r\n"
+ "Cookie: dummoOOooooO\r\n\r\n";
+ uint32_t httplen1 = sizeof(httpbuf1) - 1; /* minus the \0 */
+ TcpSession ssn;
+ Packet *p = NULL;
+ Signature *s = NULL;
+ ThreadVars th_v;
+ DetectEngineThreadCtx *det_ctx = NULL;
+ HtpState *http_state = NULL;
+ AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
+
+ memset(&th_v, 0, sizeof(th_v));
+ memset(&p, 0, sizeof(p));
+ memset(&f, 0, sizeof(f));
+ memset(&ssn, 0, sizeof(ssn));
+
+ p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
+
+ FLOW_INITIALIZE(&f);
+ f.protoctx = (void *)&ssn;
+ f.proto = IPPROTO_TCP;
+ f.flags |= FLOW_IPV4;
+
+ p->flow = &f;
+ p->flowflags |= FLOW_PKT_TOSERVER;
+ p->flowflags |= FLOW_PKT_ESTABLISHED;
+ p->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
+ f.alproto = ALPROTO_HTTP;
+
+ StreamTcpInitConfig(TRUE);
+
+ DetectEngineCtx *de_ctx = DetectEngineCtxInit();
+ if (de_ctx == NULL) {
+ goto end;
+ }
+
+ de_ctx->flags |= DE_QUIET;
+
+ s = de_ctx->sig_list = SigInit(de_ctx,"alert http any any -> any any (msg:"
+ "\"HTTP method\"; pcre:!\"/POST/M\"; "
+ " sid:1;)");
+ if (s == NULL) {
+ printf("sig parse failed: ");
+ goto end;
+ }
+
+ SigGroupBuild(de_ctx);
+ DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
+
+ SCMutexLock(&f.m);
+ int r = AppLayerParserParse(alp_tctx, &f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf1, httplen1);
+ if (r != 0) {
+ printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
+ SCMutexUnlock(&f.m);
+ goto end;
+ }
+ SCMutexUnlock(&f.m);
+
+ http_state = f.alstate;
+ if (http_state == NULL) {
+ printf("no http state: ");
+ goto end;
+ }
+
+ /* do detect */
+ SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
+
+ if (!PacketAlertCheck(p, 1)) {
+ printf("sig 1 should match: ");
+ goto end;
+ }
+
+ result = 1;
+end:
+ if (alp_tctx != NULL)
+ AppLayerParserThreadCtxFree(alp_tctx);
+ if (det_ctx != NULL) {
+ DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
+ }
+ if (de_ctx != NULL) {
+ SigGroupCleanup(de_ctx);
+ DetectEngineCtxFree(de_ctx);
+ }
+
+ StreamTcpFreeConfig(TRUE);
+ UTHFreePackets(&p, 1);
+ return result;
+}
+
+/** \test Check the signature working to alert when header modifier is
+ * passed to pcre
+ */
+static int DetectPcreTestSig13(void)
+{
+ int result = 0;
+ Flow f;
+ uint8_t httpbuf1[] = "POST / HTTP/1.0\r\nUser-Agent: Mozilla/1.0\r\n"
+ "Cookie: dummy\r\n\r\n";
+ uint32_t httplen1 = sizeof(httpbuf1) - 1; /* minus the \0 */
+ TcpSession ssn;
+ Packet *p = NULL;
+ Signature *s = NULL;
+ ThreadVars th_v;
+ DetectEngineThreadCtx *det_ctx = NULL;
+ HtpState *http_state = NULL;
+ AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
+
+ memset(&th_v, 0, sizeof(th_v));
+ memset(&p, 0, sizeof(p));
+ memset(&f, 0, sizeof(f));
+ memset(&ssn, 0, sizeof(ssn));
+
+ p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
+
+ FLOW_INITIALIZE(&f);
+ f.protoctx = (void *)&ssn;
+ f.proto = IPPROTO_TCP;
+ f.flags |= FLOW_IPV4;
+
+ p->flow = &f;
+ p->flowflags |= FLOW_PKT_TOSERVER;
+ p->flowflags |= FLOW_PKT_ESTABLISHED;
+ p->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
+ f.alproto = ALPROTO_HTTP;
+
+ StreamTcpInitConfig(TRUE);
+
+ DetectEngineCtx *de_ctx = DetectEngineCtxInit();
+ if (de_ctx == NULL) {
+ goto end;
+ }
+
+ de_ctx->flags |= DE_QUIET;
+
+ s = de_ctx->sig_list = SigInit(de_ctx,"alert http any any -> any any (msg:"
+ "\"HTTP header\"; pcre:\"/User[-_]Agent[:]?\\sMozilla/H\"; "
+ " sid:1;)");
+ if (s == NULL) {
+ printf("sig parse failed: ");
+ goto end;
+ }
+
+ SigGroupBuild(de_ctx);
+ DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
+
+ SCMutexLock(&f.m);
+ int r = AppLayerParserParse(alp_tctx, &f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf1, httplen1);
+ if (r != 0) {
+ printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
+ SCMutexUnlock(&f.m);
+ goto end;
+ }
+ SCMutexUnlock(&f.m);
+
+ http_state = f.alstate;
+ if (http_state == NULL) {
+ printf("no http state: ");
+ goto end;
+ }
+
+ /* do detect */
+ SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
+
+ if (!PacketAlertCheck(p, 1)) {
+ printf("sig 1 failed to match: ");
+ goto end;
+ }
+
+ result = 1;
+end:
+ if (alp_tctx != NULL)
+ AppLayerParserThreadCtxFree(alp_tctx);
+ if (det_ctx != NULL) {
+ DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
+ }
+ if (de_ctx != NULL) {
+ SigGroupCleanup(de_ctx);
+ DetectEngineCtxFree(de_ctx);
+ }
+
+ StreamTcpFreeConfig(TRUE);
+ UTHFreePackets(&p, 1);
+ return result;
+}
+
+/** \test Check the signature working to alert when header modifier is
+ * passed to a negated pcre
+ */
+static int DetectPcreTestSig14(void)
+{
+ int result = 0;
+ Flow f;
+ uint8_t httpbuf1[] = "GET / HTTP/1.0\r\nUser-Agent: IEXPLORER/1.0\r\n"
+ "Cookie: dummoOOooooO\r\n\r\n";
+ uint32_t httplen1 = sizeof(httpbuf1) - 1; /* minus the \0 */
+ TcpSession ssn;
+ Packet *p = NULL;
+ Signature *s = NULL;
+ ThreadVars th_v;
+ DetectEngineThreadCtx *det_ctx = NULL;
+ HtpState *http_state = NULL;
+ AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
+
+ memset(&th_v, 0, sizeof(th_v));
+ memset(&p, 0, sizeof(p));
+ memset(&f, 0, sizeof(f));
+ memset(&ssn, 0, sizeof(ssn));
+
+ p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
+
+ FLOW_INITIALIZE(&f);
+ f.protoctx = (void *)&ssn;
+ f.proto = IPPROTO_TCP;
+ f.flags |= FLOW_IPV4;
+
+ p->flow = &f;
+ p->flowflags |= FLOW_PKT_TOSERVER;
+ p->flowflags |= FLOW_PKT_ESTABLISHED;
+ p->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
+ f.alproto = ALPROTO_HTTP;
+
+ StreamTcpInitConfig(TRUE);
+
+ DetectEngineCtx *de_ctx = DetectEngineCtxInit();
+ if (de_ctx == NULL) {
+ goto end;
+ }
+
+ de_ctx->flags |= DE_QUIET;
+
+ s = de_ctx->sig_list = SigInit(de_ctx,"alert http any any -> any any (msg:"
+ "\"HTTP header\"; pcre:!\"/User-Agent[:]?\\s+Mozilla/H\"; "
+ " sid:1;)");
+ if (s == NULL) {
+ printf("sig parse failed: ");
+ goto end;
+ }
+
+ SigGroupBuild(de_ctx);
+ DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
+
+ SCMutexLock(&f.m);
+ int r = AppLayerParserParse(alp_tctx, &f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf1, httplen1);
+ if (r != 0) {
+ printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
+ SCMutexUnlock(&f.m);
+ goto end;
+ }
+ SCMutexUnlock(&f.m);
+
+ http_state = f.alstate;
+ if (http_state == NULL) {
+ printf("no http state: ");
+ goto end;
+ }
+
+ /* do detect */
+ SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
+
+ if (!PacketAlertCheck(p, 1)) {
+ printf("sig 1 should match: ");
+ goto end;
+ }
+
+ result = 1;
+end:
+ if (alp_tctx != NULL)
+ AppLayerParserThreadCtxFree(alp_tctx);
+ if (det_ctx != NULL) {
+ DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
+ }
+ if (de_ctx != NULL) {
+ SigGroupCleanup(de_ctx);
+ DetectEngineCtxFree(de_ctx);
+ }
+
+ StreamTcpFreeConfig(TRUE);
+ UTHFreePackets(&p, 1);
+ return result;
+}
+
+/** \test Check the signature working to alert when cookie and relative modifiers are
+ * passed to pcre
+ */
+static int DetectPcreTestSig15(void)
+{
+ int result = 0;
+ Flow f;
+ uint8_t httpbuf1[] = "POST / HTTP/1.0\r\nUser-Agent: Mozilla/1.0\r\n"
+ "Cookie: dummy 1234\r\n\r\n";
+ uint32_t httplen1 = sizeof(httpbuf1) - 1; /* minus the \0 */
+ TcpSession ssn;
+ Packet *p = NULL;
+ Signature *s = NULL;
+ ThreadVars th_v;
+ DetectEngineThreadCtx *det_ctx = NULL;
+ HtpState *http_state = NULL;
+ AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
+
+ memset(&th_v, 0, sizeof(th_v));
+ memset(&p, 0, sizeof(p));
+ memset(&f, 0, sizeof(f));
+ memset(&ssn, 0, sizeof(ssn));
+
+ p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
+
+ FLOW_INITIALIZE(&f);
+ f.protoctx = (void *)&ssn;
+ f.proto = IPPROTO_TCP;
+ f.flags |= FLOW_IPV4;
+
+ p->flow = &f;
+ p->flowflags |= FLOW_PKT_TOSERVER;
+ p->flowflags |= FLOW_PKT_ESTABLISHED;
+ p->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
+ f.alproto = ALPROTO_HTTP;
+
+ StreamTcpInitConfig(TRUE);
+
+ DetectEngineCtx *de_ctx = DetectEngineCtxInit();
+ if (de_ctx == NULL) {
+ goto end;
+ }
+
+ de_ctx->flags |= DE_QUIET;
+
+ s = de_ctx->sig_list = SigInit(de_ctx,"alert http any any -> any any (msg:"
+ "\"pcre relative HTTP cookie\"; content:\"dummy\";"
+ " http_cookie; pcre:\"/1234/RC\"; "
+ " sid:1;)");
+ if (s == NULL) {
+ printf("sig parse failed: ");
+ goto end;
+ }
+
+ SigGroupBuild(de_ctx);
+ DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
+
+ SCMutexLock(&f.m);
+ int r = AppLayerParserParse(alp_tctx, &f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf1, httplen1);
+ if (r != 0) {
+ printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
+ SCMutexUnlock(&f.m);
+ goto end;
+ }
+ SCMutexUnlock(&f.m);
+
+ http_state = f.alstate;
+ if (http_state == NULL) {
+ printf("no http state: ");
+ goto end;
+ }
+
+ /* do detect */
+ SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
+
+ if (!PacketAlertCheck(p, 1)) {
+ printf("sig 1 failed to match: ");
+ goto end;
+ }
+
+ result = 1;
+end:
+ if (alp_tctx != NULL)
+ AppLayerParserThreadCtxFree(alp_tctx);
+ if (det_ctx != NULL) {
+ DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
+ }
+ if (de_ctx != NULL) {
+ SigGroupCleanup(de_ctx);
+ DetectEngineCtxFree(de_ctx);
+ }
+
+ StreamTcpFreeConfig(TRUE);
+ UTHFreePackets(&p, 1);
+ return result;
+}
+
+/** \test Check the signature working to alert when method and relative modifiers are
+ * passed to pcre
+ */
+static int DetectPcreTestSig16(void)
+{
+ int result = 0;
+ Flow f;
+ uint8_t httpbuf1[] = "POST / HTTP/1.0\r\nUser-Agent: Mozilla/1.0\r\n"
+ "Cookie: dummy 1234\r\n\r\n";
+ uint32_t httplen1 = sizeof(httpbuf1) - 1; /* minus the \0 */
+ TcpSession ssn;
+ Packet *p = NULL;
+ Signature *s = NULL;
+ ThreadVars th_v;
+ DetectEngineThreadCtx *det_ctx = NULL;
+ HtpState *http_state = NULL;
+ AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
+
+ memset(&th_v, 0, sizeof(th_v));
+ memset(&p, 0, sizeof(p));
+ memset(&f, 0, sizeof(f));
+ memset(&ssn, 0, sizeof(ssn));
+
+ p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
+
+ FLOW_INITIALIZE(&f);
+ f.protoctx = (void *)&ssn;
+ f.proto = IPPROTO_TCP;
+ f.flags |= FLOW_IPV4;
+
+ p->flow = &f;
+ p->flowflags |= FLOW_PKT_TOSERVER;
+ p->flowflags |= FLOW_PKT_ESTABLISHED;
+ p->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
+ f.alproto = ALPROTO_HTTP;
+
+ StreamTcpInitConfig(TRUE);
+
+ DetectEngineCtx *de_ctx = DetectEngineCtxInit();
+ if (de_ctx == NULL) {
+ goto end;
+ }
+
+ de_ctx->flags |= DE_QUIET;
+
+ s = de_ctx->sig_list = SigInit(de_ctx,"alert http any any -> any any (msg:"
+ "\"pcre relative HTTP method\"; content:\"PO\";"
+ " http_method; pcre:\"/ST/RM\"; "
+ " sid:1;)");
+ if (s == NULL) {
+ printf("sig parse failed: ");
+ goto end;
+ }
+
+ SigGroupBuild(de_ctx);
+ DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
+
+ SCMutexLock(&f.m);
+ int r = AppLayerParserParse(alp_tctx, &f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf1, httplen1);
+ if (r != 0) {
+ printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
+ SCMutexUnlock(&f.m);
+ goto end;
+ }
+ SCMutexUnlock(&f.m);
+
+ http_state = f.alstate;
+ if (http_state == NULL) {
+ printf("no http state: ");
+ goto end;
+ }
+
+ /* do detect */
+ SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
+
+ if (!PacketAlertCheck(p, 1)) {
+ printf("sig 1 failed to match: ");
+ goto end;
+ }
+
+ result = 1;
+end:
+ if (alp_tctx != NULL)
+ AppLayerParserThreadCtxFree(alp_tctx);
+ if (det_ctx != NULL) {
+ DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
+ }
+ if (de_ctx != NULL) {
+ SigGroupCleanup(de_ctx);
+ DetectEngineCtxFree(de_ctx);
+ }
+
+ StreamTcpFreeConfig(TRUE);
+ UTHFreePackets(&p, 1);
+ return result;
+}
+
+/** \test Test tracking of body chunks per transactions (on requests)
+ */
+static int DetectPcreTxBodyChunksTest01(void)
+{
+ int result = 0;
+ Flow f;
+ TcpSession ssn;
+ Packet *p = NULL;
+ uint8_t httpbuf1[] = "GET / HTTP/1.1\r\n";
+ uint8_t httpbuf2[] = "User-Agent: Mozilla/1.0\r\nContent-Length: 10\r\n";
+ uint8_t httpbuf3[] = "Cookie: dummy\r\n\r\n";
+ uint8_t httpbuf4[] = "Body one!!";
+ uint32_t httplen1 = sizeof(httpbuf1) - 1; /* minus the \0 */
+ uint32_t httplen2 = sizeof(httpbuf2) - 1; /* minus the \0 */
+ uint32_t httplen3 = sizeof(httpbuf3) - 1; /* minus the \0 */
+ uint32_t httplen4 = sizeof(httpbuf4) - 1; /* minus the \0 */
+ uint8_t httpbuf5[] = "GET /?var=val HTTP/1.1\r\n";
+ uint8_t httpbuf6[] = "User-Agent: Firefox/1.0\r\n";
+ uint8_t httpbuf7[] = "Cookie: dummy2\r\nContent-Length: 10\r\n\r\nBody two!!";
+ uint32_t httplen5 = sizeof(httpbuf5) - 1; /* minus the \0 */
+ uint32_t httplen6 = sizeof(httpbuf6) - 1; /* minus the \0 */
+ uint32_t httplen7 = sizeof(httpbuf7) - 1; /* minus the \0 */
+ AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
+
+ memset(&f, 0, sizeof(f));
+ memset(&ssn, 0, sizeof(ssn));
+
+ p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
+
+ FLOW_INITIALIZE(&f);
+ f.protoctx = (void *)&ssn;
+ f.proto = IPPROTO_TCP;
+ f.flags |= FLOW_IPV4;
+
+ p->flow = &f;
+ p->flowflags |= FLOW_PKT_TOSERVER;
+ p->flowflags |= FLOW_PKT_ESTABLISHED;
+ p->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
+ f.alproto = ALPROTO_HTTP;
+
+ StreamTcpInitConfig(TRUE);
+
+ AppLayerHtpEnableRequestBodyCallback();
+
+ SCMutexLock(&f.m);
+ int r = AppLayerParserParse(alp_tctx, &f, ALPROTO_HTTP, STREAM_TOSERVER|STREAM_START, httpbuf1, httplen1);
+ if (r != 0) {
+ printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
+ goto end;
+ }
+
+ r = AppLayerParserParse(alp_tctx, &f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf2, httplen2);
+ if (r != 0) {
+ printf("toserver chunk 2 returned %" PRId32 ", expected 0: ", r);
+ goto end;
+ }
+
+ r = AppLayerParserParse(alp_tctx, &f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf3, httplen3);
+ if (r != 0) {
+ printf("toserver chunk 3 returned %" PRId32 ", expected 0: ", r);
+ goto end;
+ }
+
+ r = AppLayerParserParse(alp_tctx, &f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf4, httplen4);
+ if (r != 0) {
+ printf("toserver chunk 4 returned %" PRId32 ", expected 0: ", r);
+ result = 0;
+ goto end;
+ }
+
+ r = AppLayerParserParse(alp_tctx, &f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf5, httplen5);
+ if (r != 0) {
+ printf("toserver chunk 5 returned %" PRId32 ", expected 0: ", r);
+ goto end;
+ }
+
+ r = AppLayerParserParse(alp_tctx, &f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf6, httplen6);
+ if (r != 0) {
+ printf("toserver chunk 6 returned %" PRId32 ", expected 0: ", r);
+ goto end;
+ }
+
+ r = AppLayerParserParse(alp_tctx, &f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf7, httplen7);
+ if (r != 0) {
+ printf("toserver chunk 7 returned %" PRId32 ", expected 0: ", r);
+ goto end;
+ }
+
+ /* Now we should have 2 transactions, each with it's own list
+ * of request body chunks (let's test it) */
+
+ HtpState *htp_state = f.alstate;
+ if (htp_state == NULL) {
+ printf("no http state: ");
+ result = 0;
+ goto end;
+ }
+
+ /* hardcoded check of the transactions and it's client body chunks */
+ if (AppLayerParserGetTxCnt(IPPROTO_TCP, ALPROTO_HTTP, htp_state) != 2) {
+ printf("The http app layer doesn't have 2 transactions, but it should: ");
+ goto end;
+ }
+
+ htp_tx_t *t1 = AppLayerParserGetTx(IPPROTO_TCP, ALPROTO_HTTP, htp_state, 0);
+ htp_tx_t *t2 = AppLayerParserGetTx(IPPROTO_TCP, ALPROTO_HTTP, htp_state, 1);
+
+ HtpTxUserData *htud = (HtpTxUserData *) htp_tx_get_user_data(t1);
+ if (htud == NULL) {
+ printf("No body data in t1 (it should be removed only when the tx is destroyed): ");
+ goto end;
+ }
+
+ HtpBodyChunk *cur = htud->request_body.first;
+ if (htud->request_body.first == NULL) {
+ SCLogDebug("No body data in t1 (it should be removed only when the tx is destroyed): ");
+ goto end;
+ }
+
+ if (memcmp(cur->data, "Body one!!", strlen("Body one!!")) != 0) {
+ SCLogDebug("Body data in t1 is not correctly set: ");
+ goto end;
+ }
+
+ htud = (HtpTxUserData *) htp_tx_get_user_data(t2);
+
+ cur = htud->request_body.first;
+ if (htud->request_body.first == NULL) {
+ SCLogDebug("No body data in t1 (it should be removed only when the tx is destroyed): ");
+ goto end;
+ }
+
+ if (memcmp(cur->data, "Body two!!", strlen("Body two!!")) != 0) {
+ SCLogDebug("Body data in t1 is not correctly set: ");
+ goto end;
+ }
+
+
+ result = 1;
+end:
+ if (alp_tctx != NULL)
+ AppLayerParserThreadCtxFree(alp_tctx);
+ SCMutexUnlock(&f.m);
+ StreamTcpFreeConfig(TRUE);
+ FLOW_DESTROY(&f);
+ UTHFreePacket(p);
+ return result;
+}
+
+/** \test test pcre P modifier with multiple pipelined http transactions */
+static int DetectPcreTxBodyChunksTest02(void)
+{
+ int result = 0;
+ Signature *s = NULL;
+ DetectEngineThreadCtx *det_ctx = NULL;
+ ThreadVars th_v;
+ Flow f;
+ TcpSession ssn;
+ Packet *p = NULL;
+ uint8_t httpbuf1[] = "POST / HTTP/1.1\r\n";
+ uint8_t httpbuf2[] = "User-Agent: Mozilla/1.0\r\nContent-Length: 10\r\n";
+ uint8_t httpbuf3[] = "Cookie: dummy\r\n\r\n";
+ uint8_t httpbuf4[] = "Body one!!";
+ uint32_t httplen1 = sizeof(httpbuf1) - 1; /* minus the \0 */
+ uint32_t httplen2 = sizeof(httpbuf2) - 1; /* minus the \0 */
+ uint32_t httplen3 = sizeof(httpbuf3) - 1; /* minus the \0 */
+ uint32_t httplen4 = sizeof(httpbuf4) - 1; /* minus the \0 */
+ uint8_t httpbuf5[] = "GET /?var=val HTTP/1.1\r\n";
+ uint8_t httpbuf6[] = "User-Agent: Firefox/1.0\r\n";
+ uint8_t httpbuf7[] = "Cookie: dummy2\r\nContent-Length: 10\r\n\r\nBody two!!";
+ uint32_t httplen5 = sizeof(httpbuf5) - 1; /* minus the \0 */
+ uint32_t httplen6 = sizeof(httpbuf6) - 1; /* minus the \0 */
+ uint32_t httplen7 = sizeof(httpbuf7) - 1; /* minus the \0 */
+ AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
+
+ memset(&th_v, 0, sizeof(th_v));
+ memset(&f, 0, sizeof(f));
+ memset(&ssn, 0, sizeof(ssn));
+
+ p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
+
+ FLOW_INITIALIZE(&f);
+ f.protoctx = (void *)&ssn;
+ f.proto = IPPROTO_TCP;
+ f.flags |= FLOW_IPV4;
+
+ p->flow = &f;
+ p->flowflags |= FLOW_PKT_TOSERVER;
+ p->flowflags |= FLOW_PKT_ESTABLISHED;
+ p->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
+ f.alproto = ALPROTO_HTTP;
+
+ StreamTcpInitConfig(TRUE);
+
+ DetectEngineCtx *de_ctx = DetectEngineCtxInit();
+ if (de_ctx == NULL) {
+ goto end;
+ }
+
+ de_ctx->flags |= DE_QUIET;
+
+ s = DetectEngineAppendSig(de_ctx, "alert tcp any any -> any any (content:\"POST\"; http_method; content:\"Mozilla\"; http_header; content:\"dummy\"; http_cookie; pcre:\"/one/P\"; sid:1; rev:1;)");
+ if (s == NULL) {
+ printf("sig parse failed: ");
+ goto end;
+ }
+ s = DetectEngineAppendSig(de_ctx, "alert tcp any any -> any any (content:\"GET\"; http_method; content:\"Firefox\"; http_header; content:\"dummy2\"; http_cookie; pcre:\"/two/P\"; sid:2; rev:1;)");
+ if (s == NULL) {
+ printf("sig2 parse failed: ");
+ goto end;
+ }
+
+ SigGroupBuild(de_ctx);
+ DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
+
+ SCMutexLock(&f.m);
+ int r = AppLayerParserParse(alp_tctx, &f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf1, httplen1);
+ if (r != 0) {
+ printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
+ SCMutexUnlock(&f.m);
+ goto end;
+ }
+ SCMutexUnlock(&f.m);
+
+ /* do detect */
+ SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
+ if (PacketAlertCheck(p, 1)) {
+ printf("sig 1 alerted: ");
+ goto end;
+ }
+ p->alerts.cnt = 0;
+
+ SCMutexLock(&f.m);
+ r = AppLayerParserParse(alp_tctx, &f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf2, httplen2);
+ if (r != 0) {
+ printf("toserver chunk 2 returned %" PRId32 ", expected 0: ", r);
+ SCMutexUnlock(&f.m);
+ goto end;
+ }
+ SCMutexUnlock(&f.m);
+
+ /* do detect */
+ SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
+ if (PacketAlertCheck(p, 1)) {
+ printf("sig 1 alerted (2): ");
+ goto end;
+ }
+ p->alerts.cnt = 0;
+
+ SCMutexLock(&f.m);
+ r = AppLayerParserParse(alp_tctx, &f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf3, httplen3);
+ if (r != 0) {
+ printf("toserver chunk 3 returned %" PRId32 ", expected 0: ", r);
+ SCMutexUnlock(&f.m);
+ goto end;
+ }
+ SCMutexUnlock(&f.m);
+
+ /* do detect */
+ SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
+ if (PacketAlertCheck(p, 1)) {
+ printf("signature matched, but shouldn't have: ");
+ goto end;
+ }
+ p->alerts.cnt = 0;
+
+ SCMutexLock(&f.m);
+ r = AppLayerParserParse(alp_tctx, &f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf4, httplen4);
+ if (r != 0) {
+ printf("toserver chunk 4 returned %" PRId32 ", expected 0: ", r);
+ result = 0;
+ SCMutexUnlock(&f.m);
+ goto end;
+ }
+ SCMutexUnlock(&f.m);
+
+ /* do detect */
+ SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
+ if (!(PacketAlertCheck(p, 1))) {
+ printf("sig 1 didn't alert: ");
+ goto end;
+ }
+ p->alerts.cnt = 0;
+
+ SCMutexLock(&f.m);
+ r = AppLayerParserParse(alp_tctx, &f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf5, httplen5);
+ if (r != 0) {
+ printf("toserver chunk 5 returned %" PRId32 ", expected 0: ", r);
+ SCMutexUnlock(&f.m);
+ goto end;
+ }
+ SCMutexUnlock(&f.m);
+
+ /* do detect */
+ SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
+ if (PacketAlertCheck(p, 1)) {
+ printf("sig 1 alerted (5): ");
+ goto end;
+ }
+ p->alerts.cnt = 0;
+
+ SCMutexLock(&f.m);
+ r = AppLayerParserParse(alp_tctx, &f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf6, httplen6);
+ if (r != 0) {
+ printf("toserver chunk 6 returned %" PRId32 ", expected 0: ", r);
+ SCMutexUnlock(&f.m);
+ goto end;
+ }
+ SCMutexUnlock(&f.m);
+
+ /* do detect */
+ SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
+ if ((PacketAlertCheck(p, 1)) || (PacketAlertCheck(p, 2))) {
+ printf("sig 1 alerted (request 2, chunk 6): ");
+ goto end;
+ }
+ p->alerts.cnt = 0;
+
+ SCLogDebug("sending data chunk 7");
+
+ SCMutexLock(&f.m);
+ r = AppLayerParserParse(alp_tctx, &f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf7, httplen7);
+ if (r != 0) {
+ printf("toserver chunk 7 returned %" PRId32 ", expected 0: ", r);
+ SCMutexUnlock(&f.m);
+ goto end;
+ }
+ SCMutexUnlock(&f.m);
+
+ /* do detect */
+ SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
+ if (!(PacketAlertCheck(p, 2))) {
+ printf("signature 2 didn't match, but should have: ");
+ goto end;
+ }
+ p->alerts.cnt = 0;
+
+ HtpState *htp_state = f.alstate;
+ if (htp_state == NULL) {
+ printf("no http state: ");
+ result = 0;
+ goto end;
+ }
+
+ /* hardcoded check of the transactions and it's client body chunks */
+ if (AppLayerParserGetTxCnt(IPPROTO_TCP, ALPROTO_HTTP, htp_state) != 2) {
+ printf("The http app layer doesn't have 2 transactions, but it should: ");
+ goto end;
+ }
+
+ htp_tx_t *t1 = AppLayerParserGetTx(IPPROTO_TCP, ALPROTO_HTTP, htp_state, 0);
+ htp_tx_t *t2 = AppLayerParserGetTx(IPPROTO_TCP, ALPROTO_HTTP, htp_state, 1);
+
+ HtpTxUserData *htud = (HtpTxUserData *) htp_tx_get_user_data(t1);
+
+ HtpBodyChunk *cur = htud->request_body.first;
+ if (htud->request_body.first == NULL) {
+ SCLogDebug("No body data in t1 (it should be removed only when the tx is destroyed): ");
+ goto end;
+ }
+
+ if (memcmp(cur->data, "Body one!!", strlen("Body one!!")) != 0) {
+ SCLogDebug("Body data in t1 is not correctly set: ");
+ goto end;
+ }
+
+ htud = (HtpTxUserData *) htp_tx_get_user_data(t2);
+
+ cur = htud->request_body.first;
+ if (htud->request_body.first == NULL) {
+ SCLogDebug("No body data in t1 (it should be removed only when the tx is destroyed): ");
+ goto end;
+ }
+
+ if (memcmp(cur->data, "Body two!!", strlen("Body two!!")) != 0) {
+ SCLogDebug("Body data in t1 is not correctly set: ");
+ goto end;
+ }
+
+ result = 1;
+end:
+ if (alp_tctx != NULL)
+ AppLayerParserThreadCtxFree(alp_tctx);
+ if (det_ctx != NULL) {
+ DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
+ }
+ if (de_ctx != NULL) {
+ SigGroupCleanup(de_ctx);
+ DetectEngineCtxFree(de_ctx);
+ }
+
+ StreamTcpFreeConfig(TRUE);
+ FLOW_DESTROY(&f);
+ UTHFreePacket(p);
+ return result;
+}
+
+/** \test multiple http transactions and body chunks of request handling */
+static int DetectPcreTxBodyChunksTest03(void)
+{
+ int result = 0;
+ Signature *s = NULL;
+ DetectEngineThreadCtx *det_ctx = NULL;
+ ThreadVars th_v;
+ Flow f;
+ TcpSession ssn;
+ Packet *p = NULL;
+ uint8_t httpbuf1[] = "POST / HTTP/1.1\r\n";
+ uint8_t httpbuf2[] = "User-Agent: Mozilla/1.0\r\nContent-Length: 10\r\n";
+ uint8_t httpbuf3[] = "Cookie: dummy\r\n\r\n";
+ uint8_t httpbuf4[] = "Body one!!";
+ uint32_t httplen1 = sizeof(httpbuf1) - 1; /* minus the \0 */
+ uint32_t httplen2 = sizeof(httpbuf2) - 1; /* minus the \0 */
+ uint32_t httplen3 = sizeof(httpbuf3) - 1; /* minus the \0 */
+ uint32_t httplen4 = sizeof(httpbuf4) - 1; /* minus the \0 */
+ uint8_t httpbuf5[] = "GET /?var=val HTTP/1.1\r\n";
+ uint8_t httpbuf6[] = "User-Agent: Firefox/1.0\r\n";
+ uint8_t httpbuf7[] = "Cookie: dummy2\r\nContent-Length: 10\r\n\r\nBody two!!";
+ uint32_t httplen5 = sizeof(httpbuf5) - 1; /* minus the \0 */
+ uint32_t httplen6 = sizeof(httpbuf6) - 1; /* minus the \0 */
+ uint32_t httplen7 = sizeof(httpbuf7) - 1; /* minus the \0 */
+ AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
+
+ memset(&th_v, 0, sizeof(th_v));
+ memset(&f, 0, sizeof(f));
+ memset(&ssn, 0, sizeof(ssn));
+
+ p = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
+
+ FLOW_INITIALIZE(&f);
+ f.protoctx = (void *)&ssn;
+ f.proto = IPPROTO_TCP;
+ f.flags |= FLOW_IPV4;
+
+ p->flow = &f;
+ p->flowflags |= FLOW_PKT_TOSERVER;
+ p->flowflags |= FLOW_PKT_ESTABLISHED;
+ p->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
+ f.alproto = ALPROTO_HTTP;
+
+ StreamTcpInitConfig(TRUE);
+
+ DetectEngineCtx *de_ctx = DetectEngineCtxInit();
+ if (de_ctx == NULL) {
+ goto end;
+ }
+
+ de_ctx->flags |= DE_QUIET;
+
+ s = DetectEngineAppendSig(de_ctx, "alert tcp any any -> any any (content:\"POST\"; http_method; content:\"Mozilla\"; http_header; content:\"dummy\"; http_cookie; pcre:\"/one/P\"; sid:1; rev:1;)");
+ if (s == NULL) {
+ printf("sig parse failed: ");
+ goto end;
+ }
+ s = DetectEngineAppendSig(de_ctx, "alert tcp any any -> any any (content:\"GET\"; http_method; content:\"Firefox\"; http_header; content:\"dummy2\"; http_cookie; pcre:\"/two/P\"; sid:2; rev:1;)");
+ if (s == NULL) {
+ printf("sig2 parse failed: ");
+ goto end;
+ }
+
+ SigGroupBuild(de_ctx);
+ DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
+
+ SCMutexLock(&f.m);
+ int r = AppLayerParserParse(alp_tctx, &f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf1, httplen1);
+ if (r != 0) {
+ printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
+ SCMutexUnlock(&f.m);
+ goto end;
+ }
+ SCMutexUnlock(&f.m);
+
+ /* do detect */
+ SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
+ if (PacketAlertCheck(p, 1)) {
+ printf("sig 1 alerted: ");
+ goto end;
+ }
+ p->alerts.cnt = 0;
+
+ SCMutexLock(&f.m);
+ r = AppLayerParserParse(alp_tctx, &f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf2, httplen2);
+ if (r != 0) {
+ printf("toserver chunk 2 returned %" PRId32 ", expected 0: ", r);
+ SCMutexUnlock(&f.m);
+ goto end;
+ }
+ SCMutexUnlock(&f.m);
+
+ /* do detect */
+ SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
+ if (PacketAlertCheck(p, 1)) {
+ printf("sig 1 alerted (2): ");
+ goto end;
+ }
+ p->alerts.cnt = 0;
+
+ SCMutexLock(&f.m);
+ r = AppLayerParserParse(alp_tctx, &f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf3, httplen3);
+ if (r != 0) {
+ printf("toserver chunk 3 returned %" PRId32 ", expected 0: ", r);
+ SCMutexUnlock(&f.m);
+ goto end;
+ }
+ SCMutexUnlock(&f.m);
+
+ /* do detect */
+ SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
+ if (PacketAlertCheck(p, 1)) {
+ printf("signature matched, but shouldn't have: ");
+ goto end;
+ }
+ p->alerts.cnt = 0;
+
+ SCMutexLock(&f.m);
+ r = AppLayerParserParse(alp_tctx, &f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf4, httplen4);
+ if (r != 0) {
+ printf("toserver chunk 4 returned %" PRId32 ", expected 0: ", r);
+ result = 0;
+ SCMutexUnlock(&f.m);
+ goto end;
+ }
+ SCMutexUnlock(&f.m);
+
+ /* do detect */
+ SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
+ if (!(PacketAlertCheck(p, 1))) {
+ printf("sig 1 didn't alert: ");
+ goto end;
+ }
+ p->alerts.cnt = 0;
+
+ SCMutexLock(&f.m);
+ r = AppLayerParserParse(alp_tctx, &f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf5, httplen5);
+ if (r != 0) {
+ printf("toserver chunk 5 returned %" PRId32 ", expected 0: ", r);
+ SCMutexUnlock(&f.m);
+ goto end;
+ }
+ SCMutexUnlock(&f.m);
+
+ /* do detect */
+ SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
+ if (PacketAlertCheck(p, 1)) {
+ printf("sig 1 alerted (5): ");
+ goto end;
+ }
+ p->alerts.cnt = 0;
+
+ SCMutexLock(&f.m);
+ r = AppLayerParserParse(alp_tctx, &f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf6, httplen6);
+ if (r != 0) {
+ printf("toserver chunk 6 returned %" PRId32 ", expected 0: ", r);
+ SCMutexUnlock(&f.m);
+ goto end;
+ }
+ SCMutexUnlock(&f.m);
+
+ /* do detect */
+ SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
+ if ((PacketAlertCheck(p, 1)) || (PacketAlertCheck(p, 2))) {
+ printf("sig 1 alerted (request 2, chunk 6): ");
+ goto end;
+ }
+ p->alerts.cnt = 0;
+
+ SCLogDebug("sending data chunk 7");
+
+ SCMutexLock(&f.m);
+ r = AppLayerParserParse(alp_tctx, &f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf7, httplen7);
+ if (r != 0) {
+ printf("toserver chunk 7 returned %" PRId32 ", expected 0: ", r);
+ SCMutexUnlock(&f.m);
+ goto end;
+ }
+ SCMutexUnlock(&f.m);
+
+ /* do detect */
+ SigMatchSignatures(&th_v, de_ctx, det_ctx, p);
+ if (!(PacketAlertCheck(p, 2))) {
+ printf("signature 2 didn't match, but should have: ");
+ goto end;
+ }
+ p->alerts.cnt = 0;
+
+ HtpState *htp_state = f.alstate;
+ if (htp_state == NULL) {
+ printf("no http state: ");
+ result = 0;
+ goto end;
+ }
+
+ if (AppLayerParserGetTxCnt(IPPROTO_TCP, ALPROTO_HTTP, htp_state) != 2) {
+ printf("The http app layer doesn't have 2 transactions, but it should: ");
+ goto end;
+ }
+
+ result = 1;
+end:
+ if (alp_tctx != NULL)
+ AppLayerParserThreadCtxFree(alp_tctx);
+ if (det_ctx != NULL) {
+ DetectEngineThreadCtxDeinit(&th_v, (void *)det_ctx);
+ }
+ if (de_ctx != NULL) {
+ SigGroupCleanup(de_ctx);
+ DetectEngineCtxFree(de_ctx);
+ }
+
+ StreamTcpFreeConfig(TRUE);
+ FLOW_DESTROY(&f);
+ UTHFreePacket(p);
+ return result;
+}
+
+/**
+ * \test flowvar capture on http buffer
+ */
+static int DetectPcreFlowvarCapture01(void)
+{
+ int result = 0;
+ uint8_t uabuf1[] =
+ "Mozilla/5.0 (X11; U; Linux i686; es-ES; rv:1.9.0.13) Gecko/2009080315 Ubuntu/8.10 (intrepid) Firefox/3.0.13";
+ uint32_t ualen1 = sizeof(uabuf1) - 1; /* minus the \0 */
+ uint8_t httpbuf1[] =
+ "GET / HTTP/1.1\r\n"
+ "Host: www.emergingthreats.net\r\n"
+ "User-Agent: Mozilla/5.0 (X11; U; Linux i686; es-ES; rv:1.9.0.13) Gecko/2009080315 Ubuntu/8.10 (intrepid) Firefox/3.0.13\r\n"
+ "Accept: text/html,application/xhtml+xml,application/xml;q=0.9;q=0.8\r\n"
+ "Accept-Language: es-es,es;q=0.8,en-us;q=0.5,en;q=0.3\r\n"
+ "Accept-Encoding: gzip,deflate\r\n"
+ "Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7\r\n"
+ "Date: Tue, 22 Sep 2009 19:24:48 GMT\r\n"
+ "Server: Apache\r\n"
+ "\r\n"
+ "<!DOCTYPE html PUBLIC\r\n\r\n";
+ uint32_t httplen1 = sizeof(httpbuf1) - 1; /* minus the \0 */
+ TcpSession ssn;
+ Packet *p1 = NULL;
+ Flow f;
+ Signature *s = NULL;
+ ThreadVars th_v;
+ DetectEngineThreadCtx *det_ctx;
+ AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
+
+ memset(&th_v, 0, sizeof(th_v));
+ memset(&f, 0, sizeof(f));
+ memset(&ssn, 0, sizeof(ssn));
+
+ p1 = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
+
+ FLOW_INITIALIZE(&f);
+ f.protoctx = (void *)&ssn;
+ f.proto = IPPROTO_TCP;
+ f.flags |= FLOW_IPV4;
+ f.alproto = ALPROTO_HTTP;
+
+ p1->flow = &f;
+ p1->flowflags |= FLOW_PKT_TOSERVER;
+ p1->flowflags |= FLOW_PKT_ESTABLISHED;
+ p1->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
+
+ StreamTcpInitConfig(TRUE);
+
+ DetectEngineCtx *de_ctx = DetectEngineCtxInit();
+ if (de_ctx == NULL) {
+ goto end;
+ }
+ de_ctx->flags |= DE_QUIET;
+
+ s = DetectEngineAppendSig(de_ctx, "alert http any any -> any any (content:\"User-Agent: \"; http_header; pcre:\"/(?P<flow_ua>.*)\\r\\n/HR\"; sid:1;)");
+ if (s == NULL) {
+ printf("sig parse failed: ");
+ goto end;
+ }
+
+ if (s->sm_lists[DETECT_SM_LIST_HHDMATCH] == NULL ||
+ s->sm_lists[DETECT_SM_LIST_HHDMATCH]->next == NULL ||
+ s->sm_lists[DETECT_SM_LIST_HHDMATCH]->next->type != DETECT_PCRE) {
+ goto end;
+ }
+ DetectPcreData *pd = (DetectPcreData *)s->sm_lists[DETECT_SM_LIST_HHDMATCH]->next->ctx;
+
+ SigGroupBuild(de_ctx);
+ DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
+
+ SCMutexLock(&f.m);
+ int r = AppLayerParserParse(alp_tctx, &f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf1, httplen1);
+ if (r != 0) {
+ printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
+ SCMutexUnlock(&f.m);
+ goto end;
+ }
+ SCMutexUnlock(&f.m);
+
+ HtpState *http_state = f.alstate;
+ if (http_state == NULL) {
+ printf("no http state: ");
+ goto end;
+ }
+
+ /* do detect for p1 */
+ SigMatchSignatures(&th_v, de_ctx, det_ctx, p1);
+
+ if (!(PacketAlertCheck(p1, 1))) {
+ printf("sid 1 didn't match on p1 but should have: ");
+ goto end;
+ }
+
+ FlowVar *fv = FlowVarGet(&f, pd->capidx);
+ if (fv == NULL) {
+ printf("no flowvar: ");
+ goto end;
+ }
+
+ if (fv->data.fv_str.value_len != ualen1) {
+ printf("%u != %u: ", fv->data.fv_str.value_len, ualen1);
+ goto end;
+ }
+
+ if (memcmp(fv->data.fv_str.value, uabuf1, ualen1) != 0) {
+ PrintRawDataFp(stdout, fv->data.fv_str.value, fv->data.fv_str.value_len);
+ PrintRawDataFp(stdout, uabuf1, ualen1);
+
+ printf("buffer mismatch: ");
+ goto end;
+ }
+
+ result = 1;
+end:
+ if (alp_tctx != NULL)
+ AppLayerParserThreadCtxFree(alp_tctx);
+ if (de_ctx != NULL)
+ DetectEngineCtxFree(de_ctx);
+
+ StreamTcpFreeConfig(TRUE);
+ FLOW_DESTROY(&f);
+ UTHFreePackets(&p1, 1);
+ return result;
+}
+
+/**
+ * \test flowvar capture on http buffer, capture overwrite
+ */
+static int DetectPcreFlowvarCapture02(void)
+{
+ int result = 0;
+ uint8_t uabuf1[] =
+ "Apache";
+ uint32_t ualen1 = sizeof(uabuf1) - 1; /* minus the \0 */
+ uint8_t httpbuf1[] =
+ "GET / HTTP/1.1\r\n"
+ "Host: www.emergingthreats.net\r\n"
+ "User-Agent: Mozilla/5.0 (X11; U; Linux i686; es-ES; rv:1.9.0.13) Gecko/2009080315 Ubuntu/8.10 (intrepid) Firefox/3.0.13\r\n"
+ "Accept: text/html,application/xhtml+xml,application/xml;q=0.9;q=0.8\r\n"
+ "Accept-Language: es-es,es;q=0.8,en-us;q=0.5,en;q=0.3\r\n"
+ "Accept-Encoding: gzip,deflate\r\n"
+ "Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7\r\n"
+ "Date: Tue, 22 Sep 2009 19:24:48 GMT\r\n"
+ "Server: Apache\r\n"
+ "\r\n"
+ "<!DOCTYPE html PUBLIC\r\n\r\n";
+ uint32_t httplen1 = sizeof(httpbuf1) - 1; /* minus the \0 */
+ TcpSession ssn;
+ Packet *p1 = NULL;
+ Flow f;
+ Signature *s = NULL;
+ ThreadVars th_v;
+ DetectEngineThreadCtx *det_ctx;
+ AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
+
+ memset(&th_v, 0, sizeof(th_v));
+ memset(&f, 0, sizeof(f));
+ memset(&ssn, 0, sizeof(ssn));
+
+ p1 = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
+
+ FLOW_INITIALIZE(&f);
+ f.protoctx = (void *)&ssn;
+ f.proto = IPPROTO_TCP;
+ f.flags |= FLOW_IPV4;
+ f.alproto = ALPROTO_HTTP;
+
+ p1->flow = &f;
+ p1->flowflags |= FLOW_PKT_TOSERVER;
+ p1->flowflags |= FLOW_PKT_ESTABLISHED;
+ p1->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
+
+ StreamTcpInitConfig(TRUE);
+
+ DetectEngineCtx *de_ctx = DetectEngineCtxInit();
+ if (de_ctx == NULL) {
+ goto end;
+ }
+ de_ctx->flags |= DE_QUIET;
+
+ s = DetectEngineAppendSig(de_ctx, "alert http any any -> any any (content:\"User-Agent: \"; http_header; pcre:\"/(?P<flow_ua>.*)\\r\\n/HR\"; priority:1; sid:1;)");
+ if (s == NULL) {
+ printf("sig parse failed: ");
+ goto end;
+ }
+
+ if (s->sm_lists[DETECT_SM_LIST_HHDMATCH] == NULL ||
+ s->sm_lists[DETECT_SM_LIST_HHDMATCH]->next == NULL ||
+ s->sm_lists[DETECT_SM_LIST_HHDMATCH]->next->type != DETECT_PCRE) {
+ goto end;
+ }
+ DetectPcreData *pd1 = (DetectPcreData *)s->sm_lists[DETECT_SM_LIST_HHDMATCH]->next->ctx;
+
+ s = DetectEngineAppendSig(de_ctx, "alert http any any -> any any (content:\"Server: \"; http_header; pcre:\"/(?P<flow_ua>.*)\\r\\n/HR\"; priority:3; sid:2;)");
+ if (s == NULL) {
+ printf("sig parse failed: ");
+ goto end;
+ }
+
+ if (s->sm_lists[DETECT_SM_LIST_HHDMATCH] == NULL ||
+ s->sm_lists[DETECT_SM_LIST_HHDMATCH]->next == NULL ||
+ s->sm_lists[DETECT_SM_LIST_HHDMATCH]->next->type != DETECT_PCRE) {
+ goto end;
+ }
+ DetectPcreData *pd2 = (DetectPcreData *)s->sm_lists[DETECT_SM_LIST_HHDMATCH]->next->ctx;
+
+ if (pd1->capidx != pd2->capidx) {
+ printf("capidx mismatch, %u != %u: ", pd1->capidx, pd2->capidx);
+ goto end;
+ }
+
+ SCSigRegisterSignatureOrderingFuncs(de_ctx);
+ SCSigOrderSignatures(de_ctx);
+ SCSigSignatureOrderingModuleCleanup(de_ctx);
+ SigGroupBuild(de_ctx);
+ DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
+
+ SCMutexLock(&f.m);
+ int r = AppLayerParserParse(alp_tctx, &f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf1, httplen1);
+ if (r != 0) {
+ printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
+ SCMutexUnlock(&f.m);
+ goto end;
+ }
+ SCMutexUnlock(&f.m);
+
+ HtpState *http_state = f.alstate;
+ if (http_state == NULL) {
+ printf("no http state: ");
+ goto end;
+ }
+
+ /* do detect for p1 */
+ SigMatchSignatures(&th_v, de_ctx, det_ctx, p1);
+
+ if (!(PacketAlertCheck(p1, 1))) {
+ printf("sid 1 didn't match on p1 but should have: ");
+ goto end;
+ }
+
+ FlowVar *fv = FlowVarGet(&f, pd1->capidx);
+ if (fv == NULL) {
+ printf("no flowvar: ");
+ goto end;
+ }
+
+ if (fv->data.fv_str.value_len != ualen1) {
+ PrintRawDataFp(stdout, fv->data.fv_str.value, fv->data.fv_str.value_len);
+ PrintRawDataFp(stdout, uabuf1, ualen1);
+ printf("%u != %u: ", fv->data.fv_str.value_len, ualen1);
+ goto end;
+ }
+
+ if (memcmp(fv->data.fv_str.value, uabuf1, ualen1) != 0) {
+ PrintRawDataFp(stdout, fv->data.fv_str.value, fv->data.fv_str.value_len);
+ PrintRawDataFp(stdout, uabuf1, ualen1);
+
+ printf("buffer mismatch: ");
+ goto end;
+ }
+
+ result = 1;
+end:
+ if (alp_tctx != NULL)
+ AppLayerParserThreadCtxFree(alp_tctx);
+ if (de_ctx != NULL)
+ DetectEngineCtxFree(de_ctx);
+
+ StreamTcpFreeConfig(TRUE);
+ FLOW_DESTROY(&f);
+ UTHFreePackets(&p1, 1);
+ return result;
+}
+
+/**
+ * \test flowvar capture on http buffer, capture overwrite + no matching sigs, so flowvars should not be set.
+ */
+static int DetectPcreFlowvarCapture03(void)
+{
+ int result = 0;
+ uint8_t httpbuf1[] =
+ "GET / HTTP/1.1\r\n"
+ "Host: www.emergingthreats.net\r\n"
+ "User-Agent: Mozilla/5.0 (X11; U; Linux i686; es-ES; rv:1.9.0.13) Gecko/2009080315 Ubuntu/8.10 (intrepid) Firefox/3.0.13\r\n"
+ "Accept: text/html,application/xhtml+xml,application/xml;q=0.9;q=0.8\r\n"
+ "Accept-Language: es-es,es;q=0.8,en-us;q=0.5,en;q=0.3\r\n"
+ "Accept-Encoding: gzip,deflate\r\n"
+ "Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7\r\n"
+ "Date: Tue, 22 Sep 2009 19:24:48 GMT\r\n"
+ "Server: Apache\r\n"
+ "\r\n"
+ "<!DOCTYPE html PUBLIC\r\n\r\n";
+ uint32_t httplen1 = sizeof(httpbuf1) - 1; /* minus the \0 */
+ TcpSession ssn;
+ Packet *p1 = NULL;
+ Flow f;
+ Signature *s = NULL;
+ ThreadVars th_v;
+ DetectEngineThreadCtx *det_ctx;
+ AppLayerParserThreadCtx *alp_tctx = AppLayerParserThreadCtxAlloc();
+
+ memset(&th_v, 0, sizeof(th_v));
+ memset(&f, 0, sizeof(f));
+ memset(&ssn, 0, sizeof(ssn));
+
+ p1 = UTHBuildPacket(NULL, 0, IPPROTO_TCP);
+
+ FLOW_INITIALIZE(&f);
+ f.protoctx = (void *)&ssn;
+ f.proto = IPPROTO_TCP;
+ f.flags |= FLOW_IPV4;
+ f.alproto = ALPROTO_HTTP;
+
+ p1->flow = &f;
+ p1->flowflags |= FLOW_PKT_TOSERVER;
+ p1->flowflags |= FLOW_PKT_ESTABLISHED;
+ p1->flags |= PKT_HAS_FLOW|PKT_STREAM_EST;
+
+ StreamTcpInitConfig(TRUE);
+
+ DetectEngineCtx *de_ctx = DetectEngineCtxInit();
+ if (de_ctx == NULL) {
+ goto end;
+ }
+ de_ctx->flags |= DE_QUIET;
+
+ s = DetectEngineAppendSig(de_ctx, "alert http any any -> any any (content:\"User-Agent: \"; http_header; pcre:\"/(?P<flow_ua>.*)\\r\\n/HR\"; content:\"xyz\"; http_header; priority:1; sid:1;)");
+ if (s == NULL) {
+ printf("sig parse failed: ");
+ goto end;
+ }
+
+ if (s->sm_lists[DETECT_SM_LIST_HHDMATCH] == NULL ||
+ s->sm_lists[DETECT_SM_LIST_HHDMATCH]->next == NULL ||
+ s->sm_lists[DETECT_SM_LIST_HHDMATCH]->next->type != DETECT_PCRE) {
+ goto end;
+ }
+ DetectPcreData *pd1 = (DetectPcreData *)s->sm_lists[DETECT_SM_LIST_HHDMATCH]->next->ctx;
+
+ s = DetectEngineAppendSig(de_ctx, "alert http any any -> any any (content:\"Server: \"; http_header; pcre:\"/(?P<flow_ua>.*)\\r\\n/HR\"; content:\"xyz\"; http_header; priority:3; sid:2;)");
+ if (s == NULL) {
+ printf("sig parse failed: ");
+ goto end;
+ }
+
+ if (s->sm_lists[DETECT_SM_LIST_HHDMATCH] == NULL ||
+ s->sm_lists[DETECT_SM_LIST_HHDMATCH]->next == NULL ||
+ s->sm_lists[DETECT_SM_LIST_HHDMATCH]->next->type != DETECT_PCRE) {
+ goto end;
+ }
+ DetectPcreData *pd2 = (DetectPcreData *)s->sm_lists[DETECT_SM_LIST_HHDMATCH]->next->ctx;
+
+ if (pd1->capidx != pd2->capidx) {
+ printf("capidx mismatch, %u != %u: ", pd1->capidx, pd2->capidx);
+ goto end;
+ }
+
+ SigGroupBuild(de_ctx);
+ DetectEngineThreadCtxInit(&th_v, (void *)de_ctx, (void *)&det_ctx);
+
+ SCMutexLock(&f.m);
+ int r = AppLayerParserParse(alp_tctx, &f, ALPROTO_HTTP, STREAM_TOSERVER, httpbuf1, httplen1);
+ if (r != 0) {
+ printf("toserver chunk 1 returned %" PRId32 ", expected 0: ", r);
+ SCMutexUnlock(&f.m);
+ goto end;
+ }
+ SCMutexUnlock(&f.m);
+
+ HtpState *http_state = f.alstate;
+ if (http_state == NULL) {
+ printf("no http state: ");
+ goto end;
+ }
+
+ /* do detect for p1 */
+ SigMatchSignatures(&th_v, de_ctx, det_ctx, p1);
+
+ if (PacketAlertCheck(p1, 1)) {
+ printf("sid 1 matched on p1 but shouldn't have: ");
+ goto end;
+ }
+
+ FlowVar *fv = FlowVarGet(&f, pd1->capidx);
+ if (fv != NULL) {
+ printf("flowvar, shouldn't have one: ");
+ goto end;
+ }
+
+ result = 1;
+end:
+ if (alp_tctx != NULL)
+ AppLayerParserThreadCtxFree(alp_tctx);
+ if (de_ctx != NULL)
+ DetectEngineCtxFree(de_ctx);
+
+ StreamTcpFreeConfig(TRUE);
+ FLOW_DESTROY(&f);
+ UTHFreePackets(&p1, 1);
+ return result;
+}
+
+#endif /* UNITTESTS */
+
+/**
+ * \brief this function registers unit tests for DetectPcre
+ */
+void DetectPcreRegisterTests(void)
+{
+#ifdef UNITTESTS /* UNITTESTS */
+ UtRegisterTest("DetectPcreParseTest01", DetectPcreParseTest01, 1);
+ UtRegisterTest("DetectPcreParseTest02", DetectPcreParseTest02, 1);
+ UtRegisterTest("DetectPcreParseTest03", DetectPcreParseTest03, 1);
+ UtRegisterTest("DetectPcreParseTest04", DetectPcreParseTest04, 1);
+ UtRegisterTest("DetectPcreParseTest05", DetectPcreParseTest05, 1);
+ UtRegisterTest("DetectPcreParseTest06", DetectPcreParseTest06, 1);
+ UtRegisterTest("DetectPcreParseTest07", DetectPcreParseTest07, 1);
+ UtRegisterTest("DetectPcreParseTest08", DetectPcreParseTest08, 1);
+ UtRegisterTest("DetectPcreParseTest09", DetectPcreParseTest09, 1);
+ UtRegisterTest("DetectPcreParseTest10", DetectPcreParseTest10, 1);
+ UtRegisterTest("DetectPcreParseTest11", DetectPcreParseTest11, 1);
+ UtRegisterTest("DetectPcreParseTest12", DetectPcreParseTest12, 1);
+ UtRegisterTest("DetectPcreParseTest13", DetectPcreParseTest13, 1);
+ UtRegisterTest("DetectPcreParseTest14", DetectPcreParseTest14, 1);
+ UtRegisterTest("DetectPcreParseTest15", DetectPcreParseTest15, 1);
+ UtRegisterTest("DetectPcreParseTest16", DetectPcreParseTest16, 1);
+ UtRegisterTest("DetectPcreParseTest17", DetectPcreParseTest17, 1);
+ UtRegisterTest("DetectPcreParseTest18", DetectPcreParseTest18, 1);
+ UtRegisterTest("DetectPcreParseTest19", DetectPcreParseTest19, 1);
+ UtRegisterTest("DetectPcreParseTest20", DetectPcreParseTest20, 1);
+ UtRegisterTest("DetectPcreParseTest21", DetectPcreParseTest21, 1);
+ UtRegisterTest("DetectPcreParseTest22", DetectPcreParseTest22, 1);
+ UtRegisterTest("DetectPcreParseTest23", DetectPcreParseTest23, 1);
+ UtRegisterTest("DetectPcreParseTest24", DetectPcreParseTest24, 1);
+ UtRegisterTest("DetectPcreParseTest25", DetectPcreParseTest25, 1);
+ UtRegisterTest("DetectPcreParseTest26", DetectPcreParseTest26, 1);
+ UtRegisterTest("DetectPcreParseTest27", DetectPcreParseTest27, 1);
+
+ UtRegisterTest("DetectPcreTestSig01B2g -- pcre test", DetectPcreTestSig01B2g, 1);
+ UtRegisterTest("DetectPcreTestSig01B3g -- pcre test", DetectPcreTestSig01B3g, 1);
+ UtRegisterTest("DetectPcreTestSig01Wm -- pcre test", DetectPcreTestSig01Wm, 1);
+ UtRegisterTest("DetectPcreTestSig02B2g -- pcre test", DetectPcreTestSig02B2g, 1);
+ UtRegisterTest("DetectPcreTestSig02B3g -- pcre test", DetectPcreTestSig02B3g, 1);
+ UtRegisterTest("DetectPcreTestSig02Wm -- pcre test", DetectPcreTestSig02Wm, 1);
+ UtRegisterTest("DetectPcreTestSig03B2g -- negated pcre test", DetectPcreTestSig03B2g, 1);
+ UtRegisterTest("DetectPcreTestSig03B3g -- negated pcre test", DetectPcreTestSig03B3g, 1);
+ UtRegisterTest("DetectPcreTestSig03Wm -- negated pcre test", DetectPcreTestSig03Wm, 1);
+
+ UtRegisterTest("DetectPcreModifPTest04 -- Modifier P", DetectPcreModifPTest04, 1);
+ UtRegisterTest("DetectPcreModifPTest05 -- Modifier P fragmented", DetectPcreModifPTest05, 1);
+ UtRegisterTest("DetectPcreTestSig06", DetectPcreTestSig06, 1);
+ UtRegisterTest("DetectPcreTestSig07 -- anchored pcre", DetectPcreTestSig07, 1);
+ UtRegisterTest("DetectPcreTestSig08 -- anchored pcre", DetectPcreTestSig08, 1);
+ UtRegisterTest("DetectPcreTestSig09 -- Cookie modifier", DetectPcreTestSig09, 1);
+ UtRegisterTest("DetectPcreTestSig10 -- negated Cookie modifier", DetectPcreTestSig10, 1);
+ UtRegisterTest("DetectPcreTestSig11 -- Method modifier", DetectPcreTestSig11, 1);
+ UtRegisterTest("DetectPcreTestSig12 -- negated Method modifier", DetectPcreTestSig12, 1);
+ UtRegisterTest("DetectPcreTestSig13 -- Header modifier", DetectPcreTestSig13, 1);
+ UtRegisterTest("DetectPcreTestSig14 -- negated Header modifier", DetectPcreTestSig14, 1);
+ UtRegisterTest("DetectPcreTestSig15 -- relative Cookie modifier", DetectPcreTestSig15, 1);
+ UtRegisterTest("DetectPcreTestSig16 -- relative Method modifier", DetectPcreTestSig16, 1);
+
+ UtRegisterTest("DetectPcreTxBodyChunksTest01", DetectPcreTxBodyChunksTest01, 1);
+ UtRegisterTest("DetectPcreTxBodyChunksTest02 -- modifier P, body chunks per tx", DetectPcreTxBodyChunksTest02, 1);
+ UtRegisterTest("DetectPcreTxBodyChunksTest03 -- modifier P, body chunks per tx", DetectPcreTxBodyChunksTest03, 1);
+
+ UtRegisterTest("DetectPcreFlowvarCapture01 -- capture for http_header", DetectPcreFlowvarCapture01, 1);
+ UtRegisterTest("DetectPcreFlowvarCapture02 -- capture for http_header", DetectPcreFlowvarCapture02, 1);
+ UtRegisterTest("DetectPcreFlowvarCapture03 -- capture for http_header", DetectPcreFlowvarCapture03, 1);
+
+#endif /* UNITTESTS */
+}
+