1 files changed, 92 insertions, 0 deletions
diff --git a/source3/rpc_server/mdssvc/es_lexer.l b/source3/rpc_server/mdssvc/es_lexer.l
new file mode 100644
index 0000000..4be4225
--- /dev/null
+++ b/source3/rpc_server/mdssvc/es_lexer.l
@@ -0,0 +1,92 @@
+/*
+   Unix SMB/CIFS implementation.
+   Main metadata server / Spotlight routines / Elasticsearch backend
+
+   Copyright (C) Ralph Boehme			2019
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   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
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+%{
+#include "includes.h"
+#include "rpc_server/mdssvc/es_parser.tab.h"
+
+#define YY_NO_INPUT
+#define mdsyylalloc SMB_MALLOC
+#define mdsyylrealloc SMB_REALLOC
+
+static char *strip_quote(const char *phrase);
+%}
+
+%option nounput noyyalloc noyyrealloc prefix="mdsyyl"
+
+ASC     [a-zA-Z0-9_\*\:\-\.]
+U       [\x80-\xbf]
+U2      [\xc2-\xdf]
+U3      [\xe0-\xef]
+U4      [\xf0-\xf4]
+SPECIAL [\!\#\$\%\&\'\(\)\+\,\.\/\;\<\=\>\?\@\[\]\^\`\{\}\|\~\\]
+ESCHAR  [\"\*]
+BLANK   [ \t\n]
+
+UANY    {ASC}|{U2}{U}|{U3}{U}{U}|{U4}{U}{U}{U}
+UONLY   {U2}{U}|{U3}{U}{U}|{U4}{U}{U}{U}
+UPHRASE {UANY}|{SPECIAL}|{BLANK}|\\{ESCHAR}
+
+%%
+InRange           return FUNC_INRANGE;
+\$time\.iso       return DATE_ISO;
+false             {mdsyyllval.bval = false; return BOOLEAN;}
+true              {mdsyyllval.bval = true; return BOOLEAN;}
+\"                return QUOTE;
+\(                return OBRACE;
+\)                return CBRACE;
+\&\&              return AND;
+\|\|              return OR;
+\=\=              return EQUAL;
+\!\=              return UNEQUAL;
+\=                return EQUAL;
+\<                return LT;
+\>                return GT;
+\,                return COMMA;
+{UANY}+           {mdsyyllval.sval = talloc_strdup(talloc_tos(), yytext); return WORD;}
+\"{UPHRASE}+\"    {mdsyyllval.sval = strip_quote(yytext); return PHRASE;}
+{BLANK}           /* ignore */
+%%
+
+static char *strip_quote(const char *phrase)
+{
+	size_t phrase_len = 0;
+	char *stripped_phrase = NULL;
+
+	if (phrase == NULL) {
+		return NULL;
+	}
+
+	phrase_len = strlen(phrase);
+	if (phrase_len < 2 ||
+	    phrase[0] != '\"' ||
+	    phrase[phrase_len - 1] != '\"')
+	{
+		return talloc_strdup(talloc_tos(), phrase);
+	}
+
+	phrase++;
+
+	stripped_phrase = talloc_strndup(talloc_tos(), phrase, phrase_len - 2);
+	if (stripped_phrase == NULL) {
+		return NULL;
+	}
+	return stripped_phrase;
+}