Adding upstream version 2.4.57.upstream/2.4.57

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

1 files changed, 141 insertions, 0 deletions

diff --git a/server/util_expr_private.h b/server/util_expr_private.h
new file mode 100644
index 0000000..14cc4e3
--- /dev/null
+++ b/server/util_expr_private.h
@@ -0,0 +1,141 @@
+/* Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#ifndef __AP_EXPR_PRIVATE_H__
+#define __AP_EXPR_PRIVATE_H__
+
+#include "httpd.h"
+#include "apr_strings.h"
+#include "apr_tables.h"
+#include "ap_expr.h"
+
+#ifndef YY_NULL
+#define YY_NULL 0
+#endif
+
+#ifndef MIN
+#define MIN(a,b) (((a)<(b))?(a):(b))
+#endif
+
+#if !APR_HAVE_UNISTD_H
+#define YY_NO_UNISTD_H
+#endif
+
+#ifdef _MSC_VER
+/* Avoid some warnings with Visual Studio (likely due to a bug in bison) */
+#define YYMALLOC malloc
+#define YYFREE   free
+#endif
+
+#ifndef YYDEBUG
+#define YYDEBUG 0
+#endif
+
+/** The operations in a parse tree node */
+typedef enum {
+    op_NOP,
+    op_True, op_False,
+    op_Not, op_Or, op_And,
+    op_Comp,
+    op_EQ, op_NE, op_LT, op_LE, op_GT, op_GE, op_IN,
+    op_REG, op_NRE,
+    op_STR_EQ, op_STR_NE, op_STR_LT, op_STR_LE, op_STR_GT, op_STR_GE,
+    op_Concat,
+    op_Digit, op_String, op_Regex, op_RegexBackref,
+    op_Var,
+    op_ListElement,
+    /*
+     * call external functions/operators.
+     * The info node contains the function pointer and some function specific
+     * info.
+     * For Binary operators, the Call node links to the Info node and the
+     * Args node, which in turn links to the left and right operand.
+     * For all other variants, the Call node links to the Info node and the
+     * argument.
+     */
+    op_UnaryOpCall, op_UnaryOpInfo,
+    op_BinaryOpCall, op_BinaryOpInfo, op_BinaryOpArgs,
+    op_StringFuncCall, op_StringFuncInfo,
+    op_ListFuncCall, op_ListFuncInfo
+} ap_expr_node_op_e;
+
+/** The basic parse tree node */
+struct ap_expr_node {
+    ap_expr_node_op_e node_op;
+    const void *node_arg1;
+    const void *node_arg2;
+};
+
+/** The context used by scanner and parser */
+typedef struct {
+    /* internal state of the scanner */
+    const char        *inputbuf;
+    int                inputlen;
+    const char        *inputptr;
+    void              *scanner;
+    char              *scan_ptr;
+    char               scan_buf[MAX_STRING_LEN];
+    char               scan_del;
+    int                at_start;
+
+    /* pools for result and temporary usage */
+    apr_pool_t        *pool;
+    apr_pool_t        *ptemp;
+
+    /* The created parse tree */
+    ap_expr_t         *expr;
+
+    const char        *error;
+    const char        *error2;
+    unsigned           flags;
+
+    /*
+     * The function to use to lookup provider functions for variables
+     * and funtctions
+     */
+    ap_expr_lookup_fn_t *lookup_fn;
+} ap_expr_parse_ctx_t;
+
+/* flex/bison functions */
+int  ap_expr_yyparse(ap_expr_parse_ctx_t *context);
+void ap_expr_yyerror(ap_expr_parse_ctx_t *context, const char *err);
+int  ap_expr_yylex_init(void **scanner);
+int  ap_expr_yylex_destroy(void *scanner);
+void ap_expr_yyset_extra(ap_expr_parse_ctx_t *context, void *scanner);
+
+/* create a parse tree node */
+ap_expr_t *ap_expr_make(ap_expr_node_op_e op, const void *arg1,
+                        const void *arg2, ap_expr_parse_ctx_t *ctx);
+/* create parse tree node for the string-returning function 'name' */
+ap_expr_t *ap_expr_str_func_make(const char *name, const ap_expr_t *arg,
+                               ap_expr_parse_ctx_t *ctx);
+/* create parse tree node for the list-returning function 'name' */
+ap_expr_t *ap_expr_list_func_make(const char *name, const ap_expr_t *arg,
+                                ap_expr_parse_ctx_t *ctx);
+/* create parse tree node for the variable 'name' */
+ap_expr_t *ap_expr_var_make(const char *name, ap_expr_parse_ctx_t *ctx);
+/* create parse tree node for the unary operator 'name' */
+ap_expr_t *ap_expr_unary_op_make(const char *name, const ap_expr_t *arg,
+                               ap_expr_parse_ctx_t *ctx);
+/* create parse tree node for the binary operator 'name' */
+ap_expr_t *ap_expr_binary_op_make(const char *name, const ap_expr_t *arg1,
+                                  const ap_expr_t *arg2,
+                                  ap_expr_parse_ctx_t *ctx);
+
+
+#endif /* __AP_EXPR_PRIVATE_H__ */
+/** @} */
+