1 files changed, 81 insertions, 0 deletions
diff --git a/src/detect-nocase.c b/src/detect-nocase.c
new file mode 100644
index 0000000..deed7b2
--- /dev/null
+++ b/src/detect-nocase.c
@@ -0,0 +1,81 @@
+/* Copyright (C) 2007-2010 Open Information Security Foundation
+ *
+ * You can copy, redistribute or modify this Program under the terms of
+ * the GNU General Public License version 2 as published by the Free
+ * Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * version 2 along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+/**
+ * \file
+ *
+ * \author Victor Julien <victor@inliniac.net>
+ *
+ * Implements the nocase keyword
+ */
+
+#include "suricata-common.h"
+#include "suricata.h"
+#include "decode.h"
+
+#include "detect.h"
+#include "detect-parse.h"
+#include "detect-content.h"
+#include "detect-nocase.h"
+
+#include "util-debug.h"
+
+static int DetectNocaseSetup (DetectEngineCtx *, Signature *, const char *);
+
+void DetectNocaseRegister(void)
+{
+    sigmatch_table[DETECT_NOCASE].name = "nocase";
+    sigmatch_table[DETECT_NOCASE].desc = "modify content match to be case insensitive";
+    sigmatch_table[DETECT_NOCASE].url = "/rules/payload-keywords.html#nocase";
+    sigmatch_table[DETECT_NOCASE].Setup = DetectNocaseSetup;
+    sigmatch_table[DETECT_NOCASE].flags |= SIGMATCH_NOOPT;
+}
+
+/**
+ *  \internal
+ *  \brief Apply the nocase keyword to the last pattern match, either content or uricontent
+ *  \param det_ctx detection engine ctx
+ *  \param s signature
+ *  \param nullstr should be null
+ *  \retval 0 ok
+ *  \retval -1 failure
+ */
+static int DetectNocaseSetup (DetectEngineCtx *de_ctx, Signature *s, const char *nullstr)
+{
+    SCEnter();
+
+    SigMatch *pm = NULL;
+    int ret = -1;
+
+    if (nullstr != NULL) {
+        SCLogError("nocase has value");
+        goto end;
+    }
+
+    /* retrieve the sm to apply the nocase against */
+    pm = DetectGetLastSMFromLists(s, DETECT_CONTENT, -1);
+    if (pm == NULL) {
+        SCLogError("nocase needs "
+                   "preceding content option");
+        goto end;
+    }
+
+    DetectContentData *cd = (DetectContentData *)pm->ctx;
+    ret = DetectContentConvertToNocase(de_ctx, cd);
+ end:
+    SCReturnInt(ret);
+}