Adding upstream version 1:7.0.3.upstream/1%7.0.3

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 50 insertions, 0 deletions

diff --git a/src/detect-requires.c b/src/detect-requires.c
new file mode 100644
index 0000000..4d7f916
--- /dev/null
+++ b/src/detect-requires.c
@@ -0,0 +1,50 @@
+/* Copyright (C) 2023 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.
+ */
+
+#include "detect-requires.h"
+#include "suricata-common.h"
+#include "detect-engine.h"
+#include "rust.h"
+
+static int DetectRequiresSetup(DetectEngineCtx *de_ctx, Signature *s, const char *rawstr)
+{
+    if (de_ctx->requirements == NULL) {
+        de_ctx->requirements = (void *)SCDetectRequiresStatusNew();
+        BUG_ON(de_ctx->requirements == NULL);
+    }
+
+    const char *errmsg = NULL;
+    int res = SCDetectCheckRequires(rawstr, PROG_VER, &errmsg, de_ctx->requirements);
+    if (res == -1) {
+        // The requires expression is bad, log an error.
+        SCLogError("%s: %s", errmsg, rawstr);
+        de_ctx->sigerror = errmsg;
+    } else if (res < -1) {
+        // This Suricata instance didn't meet the requirements.
+        SCLogInfo("Suricata did not meet the rule requirements: %s: %s", errmsg, rawstr);
+        return -4;
+    }
+    return res;
+}
+
+void DetectRequiresRegister(void)
+{
+    sigmatch_table[DETECT_REQUIRES].name = "requires";
+    sigmatch_table[DETECT_REQUIRES].desc = "require Suricata version or features";
+    sigmatch_table[DETECT_REQUIRES].url = "/rules/meta-keywords.html#requires";
+    sigmatch_table[DETECT_REQUIRES].Setup = DetectRequiresSetup;
+}