Initial commit of Hyperscan

2025-11-15 17:02:14 +03:00 · 2015-10-20 09:13:35 +11:00
commit 904e436f11
610 changed files with 213627 additions and 0 deletions
--- a/src/nfa/castle_dump.cpp
+++ b/src/nfa/castle_dump.cpp
@@ -0,0 +1,116 @@
+/*
+ * Copyright (c) 2015, Intel Corporation
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *  * Redistributions of source code must retain the above copyright notice,
+ *    this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *  * Neither the name of Intel Corporation nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/** \file
+ * \brief Castle: multi-tenant repeat engine, dump code.
+ */
+
+#include "config.h"
+
+#include "castle_dump.h"
+
+#include "castle_internal.h"
+#include "nfa_dump_internal.h"
+#include "nfa_internal.h"
+#include "shufticompile.h"
+#include "trufflecompile.h"
+#include "util/charreach.h"
+#include "util/dump_charclass.h"
+
+#ifndef DUMP_SUPPORT
+#error No dump support!
+#endif
+
+namespace ue2 {
+
+void nfaExecCastle0_dumpDot(const struct NFA *, FILE *) {
+    // No GraphViz output for Castles.
+}
+
+static
+void dumpTextSubCastle(const SubCastle &sub, FILE *f) {
+    const RepeatInfo *info =
+        (const RepeatInfo *)((const char *)&sub + sub.repeatInfoOffset);
+    fprintf(f, "  repeat model:          %s\n", repeatTypeName(info->type));
+    fprintf(f, "  repeat bounds:         {%u, %u}\n", info->repeatMin,
+            info->repeatMax);
+    fprintf(f, "  min period:            %u\n", info->minPeriod);
+
+    fprintf(f, "  report:                %u\n", sub.report);
+    fprintf(f, "  full state offset:     %u\n", sub.fullStateOffset);
+    fprintf(f, "  stream state offset:   %u\n", sub.streamStateOffset);
+    fprintf(f, "\n");
+}
+
+void nfaExecCastle0_dumpText(const struct NFA *nfa, FILE *f) {
+    const Castle *c = (const Castle *)getImplNfa(nfa);
+
+    fprintf(f, "Castle multi-tenant repeat engine\n");
+    fprintf(f, "\n");
+    fprintf(f, "Number of repeat tenants:  %u\n", c->numRepeats);
+    fprintf(f, "Scan type:                 ");
+    switch (c->type) {
+    case CASTLE_DOT:
+        fprintf(f, "dot\n");
+        break;
+    case CASTLE_VERM:
+        fprintf(f, "verm, scanning for 0x%02x\n", c->u.verm.c);
+        break;
+    case CASTLE_NVERM:
+        fprintf(f, "negated verm, scanning for 0x%02x\n", c->u.verm.c);
+        break;
+    case CASTLE_SHUFTI: {
+        const CharReach cr = shufti2cr(c->u.shuf.mask_lo, c->u.shuf.mask_hi);
+        fprintf(f, "shufti, scanning for %s (%zu chars)\n",
+                describeClass(cr).c_str(), cr.count());
+        break;
+    }
+    case CASTLE_TRUFFLE: {
+        const CharReach cr = truffle2cr(c->u.truffle.mask1, c->u.truffle.mask2);
+        fprintf(f, "truffle, scanning for %s (%zu chars)\n",
+                describeClass(cr).c_str(), cr.count());
+        break;
+    }
+    default:
+        fprintf(f, "unknown type %u\n", c->type);
+        break;
+    }
+
+    fprintf(f, "\n");
+    dumpTextReverse(nfa, f);
+    fprintf(f, "\n");
+
+    const SubCastle *sub =
+        (const SubCastle *)((const char *)c + sizeof(Castle));
+    for (u32 i = 0; i < c->numRepeats; i++) {
+        fprintf(f, "Sub %u:\n", i);
+        dumpTextSubCastle(sub[i], f);
+    }
+}
+
+} // namespace ue2