ModSecurity/src/operators/validate_schema.h
2018-02-20 13:40:00 -03:00

143 lines
3.5 KiB
C++

/*
* ModSecurity, http://www.modsecurity.org/
* Copyright (c) 2015 Trustwave Holdings, Inc. (http://www.trustwave.com/)
*
* 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
*
* If any of the files related to licensing are missing or if you have any
* other questions related to licensing please contact Trustwave Holdings, Inc.
* directly using the email address security@modsecurity.org.
*
*/
#ifndef SRC_OPERATORS_VALIDATE_SCHEMA_H_
#define SRC_OPERATORS_VALIDATE_SCHEMA_H_
#include <stdio.h>
#include <stdarg.h>
#include <string.h>
#include <libxml/xmlschemas.h>
#include <libxml/xpath.h>
#include <string>
#include <memory>
#include <utility>
#include "src/operators/operator.h"
namespace modsecurity {
namespace operators {
class ValidateSchema : public Operator {
public:
/** @ingroup ModSecurity_Operator */
explicit ValidateSchema(std::unique_ptr<RunTimeString> param)
: Operator("ValidateSchema", std::move(param)),
m_parserCtx(NULL),
m_validCtx(NULL),
m_schema(NULL) { }
~ValidateSchema() {
/*
if (m_schema != NULL) {
xmlSchemaFree(m_schema);
m_schema = NULL;
}
*/
if (m_validCtx != NULL) {
xmlSchemaFreeValidCtxt(m_validCtx);
m_validCtx = NULL;
}
}
bool evaluate(Transaction *transaction, const std::string &str) override;
bool init(const std::string &file, std::string *error) override;
static void error_load(void *ctx, const char *msg, ...) {
std::string *t = reinterpret_cast<std::string *>(ctx);
char buf[1024];
va_list args;
va_start(args, msg);
int len = vsnprintf(buf, sizeof(buf), msg, args);
va_end(args);
if (len > 0) {
t->append("XML Error: " + std::string(buf));
}
}
static void warn_load(void *ctx, const char *msg, ...) {
std::string *t = reinterpret_cast<std::string *>(ctx);
char buf[1024];
va_list args;
va_start(args, msg);
int len = vsnprintf(buf, sizeof(buf), msg, args);
va_end(args);
if (len > 0) {
t->append("XML Warning: " + std::string(buf));
}
}
static void error_runtime(void *ctx, const char *msg, ...) {
Transaction *t = reinterpret_cast<Transaction *>(ctx);
char buf[1024];
std::string s;
va_list args;
va_start(args, msg);
int len = vsnprintf(buf, sizeof(buf), msg, args);
va_end(args);
if (len > 0) {
s = "XML Error: " + std::string(buf);
}
#ifndef NO_LOGS
t->debug(4, s);
#endif
}
static void warn_runtime(void *ctx, const char *msg, ...) {
Transaction *t = reinterpret_cast<Transaction *>(ctx);
char buf[1024];
std::string s;
va_list args;
va_start(args, msg);
int len = vsnprintf(buf, sizeof(buf), msg, args);
va_end(args);
if (len > 0) {
s = "XML Warning: " + std::string(buf);
}
#ifndef NO_LOGS
t->debug(4, s);
#endif
}
static void null_error(void *ctx, const char *msg, ...) {
}
private:
xmlSchemaParserCtxtPtr m_parserCtx;
xmlSchemaValidCtxtPtr m_validCtx;
xmlSchemaPtr m_schema;
std::string m_resource;
std::string m_err;
};
} // namespace operators
} // namespace modsecurity
#endif // SRC_OPERATORS_VALIDATE_SCHEMA_H_