Splits Rule class into: Rule, RuleBase, RuleMarker

This commit is contained in:
Felipe Zimmerle
2019-02-18 15:42:13 -03:00
parent fda03c0016
commit 43f8aee6b6
18 changed files with 948 additions and 851 deletions

View File

@@ -26,6 +26,7 @@
#define HEADERS_MODSECURITY_RULE_H_
#include "modsecurity/transaction.h"
#include "modsecurity/modsecurity.h"
#include "modsecurity/variable_value.h"
@@ -63,7 +64,80 @@ using Tags = std::vector<actions::Tag *>;
using SetVars = std::vector<actions::SetVar *>;
using MatchActions = std::vector<actions::Action *>;
class Rule {
class RuleBase {
public:
RuleBase(std::unique_ptr<std::string> fileName, int lineNumber)
: m_fileName(std::move(fileName)),
m_lineNumber(lineNumber),
m_phase(modsecurity::Phases::RequestHeadersPhase) {
}
virtual bool evaluate(Transaction *transaction,
std::shared_ptr<RuleMessage> rm) = 0;
std::shared_ptr<std::string> getFileName() const {
return m_fileName;
}
int getLineNumber() const {
return m_lineNumber;
}
int getPhase() const { return m_phase; }
void setPhase(int phase) { m_phase = phase; }
virtual std::string getReference() {
return *m_fileName + ":" + std::to_string(m_lineNumber);
}
virtual bool isMarker() { return false; }
private:
std::shared_ptr<std::string> m_fileName;
int m_lineNumber;
// FIXME: phase may not be neede to SecMarker.
int m_phase;
};
class RuleMarker : public RuleBase {
public:
RuleMarker(
const std::string &name,
std::unique_ptr<std::string> fileName,
int lineNumber)
: RuleBase(std::move(fileName), lineNumber),
m_name(std::make_shared<std::string>(name)) { }
virtual bool evaluate(Transaction *transaction,
std::shared_ptr<RuleMessage> rm) override {
if (transaction->isInsideAMarker()) {
if (*transaction->getCurrentMarker() == *m_name) {
transaction->removeMarker();
// FIXME: Move this to .cc
// ms_dbg_a(transaction, 4, "Out of a SecMarker " + *m_name);
}
}
return true;
};
std::shared_ptr<std::string> getName() const {
return m_name;
}
bool isMarker() override { return true; }
private:
std::shared_ptr<std::string> m_name;
};
class Rule : public RuleBase {
public:
Rule(operators::Operator *op,
variables::Variables *variables,
@@ -71,11 +145,13 @@ class Rule {
Transformations *transformations,
std::unique_ptr<std::string> fileName,
int lineNumber);
explicit Rule(const std::string &marker);
explicit Rule(const std::string &marker,
std::unique_ptr<std::string> fileName,
int lineNumber);
virtual ~Rule();
virtual bool evaluate(Transaction *transaction,
std::shared_ptr<RuleMessage> rm);
std::shared_ptr<RuleMessage> rm) override;
void organizeActions(std::vector<actions::Action *> *actions);
void cleanUpActions();
@@ -119,8 +195,6 @@ class Rule {
inline bool isUnconditional() const { return m_operator == NULL; }
virtual bool isMarker() { return m_isSecMarker; }
inline bool isChained() const { return m_isChained == true; }
inline bool hasCaptureAction() const { return m_containsCaptureAction == true; }
inline void setChained(bool b) { m_isChained = b; }
@@ -133,23 +207,23 @@ class Rule {
std::string msg(Transaction *t);
inline bool hasSeverity() const { return m_severity != NULL; }
int severity() const;
int getPhase() const { return m_phase; }
void setPhase(int phase) { m_phase = phase; }
std::string getOperatorName() const;
int64_t m_ruleId;
virtual std::string getReference() override {
return std::to_string(m_ruleId);
}
std::unique_ptr<Rule> m_chainedRuleChild;
Rule *m_chainedRuleParent;
std::shared_ptr<std::string> m_fileName;
std::string m_marker;
std::string m_rev;
std::string m_ver;
int m_accuracy;
int m_maturity;
int m_lineNumber;
private:
modsecurity::variables::Variables *m_variables;
@@ -174,7 +248,7 @@ class Rule {
bool m_isSecMarker:1;
bool m_unconditional:1;
int m_phase;
};

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@@ -55,9 +55,9 @@ class RuleMessage {
m_reference(""),
m_rev(rule->m_rev),
m_rule(rule),
m_ruleFile(rule->m_fileName),
m_ruleFile(rule->getFileName()),
m_ruleId(rule->m_ruleId),
m_ruleLine(rule->m_lineNumber),
m_ruleLine(rule->getLineNumber()),
m_saveMessage(true),
m_serverIpAddress(trans->m_serverIpAddress),
m_severity(0),

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@@ -40,7 +40,7 @@ class Rules {
public:
void dump() const {
for (int j = 0; j < m_rules.size(); j++) {
std::cout << " Rule ID: " << std::to_string(m_rules.at(j)->m_ruleId);
std::cout << " Rule ID: " << m_rules.at(j)->getReference();
std::cout << "--" << m_rules.at(j) << std::endl;
}
}
@@ -48,8 +48,8 @@ class Rules {
int append(Rules *from, const std::vector<int64_t> &ids, std::ostringstream *err) {
size_t j = 0;
for (; j < from->size(); j++) {
Rule *rule = from->at(j).get();
if (std::binary_search(ids.begin(), ids.end(), rule->m_ruleId)) {
Rule *rule = dynamic_cast<Rule *>(from->at(j).get());
if (rule && std::binary_search(ids.begin(), ids.end(), rule->m_ruleId)) {
if (err != NULL) {
*err << "Rule id: " << std::to_string(rule->m_ruleId) \
<< " is duplicated" << std::endl;
@@ -61,28 +61,28 @@ class Rules {
return j;
}
bool insert(std::shared_ptr<Rule> rule) {
bool insert(std::shared_ptr<RuleBase> rule) {
return insert(rule, nullptr, nullptr);
}
bool insert(std::shared_ptr<Rule> rule, const std::vector<int64_t> *ids, std::ostringstream *err) {
if (ids != nullptr && std::binary_search(ids->begin(), ids->end(), rule->m_ruleId)) {
bool insert(std::shared_ptr<RuleBase> rule, const std::vector<int64_t> *ids, std::ostringstream *err) {
Rule *r = dynamic_cast<Rule *>(rule.get());
if (ids != nullptr && std::binary_search(ids->begin(), ids->end(), r->m_ruleId)) {
if (err != nullptr) {
*err << "Rule id: " << std::to_string(rule->m_ruleId) \
*err << "Rule id: " << std::to_string(r->m_ruleId) \
<< " is duplicated" << std::endl;
}
return false;
}
m_rules.push_back(rule);
return true;
}
size_t size() const { return m_rules.size(); }
std::shared_ptr<Rule> operator[](int index) const { return m_rules[index]; }
std::shared_ptr<Rule> at(int index) const { return m_rules[index]; }
std::shared_ptr<RuleBase> operator[](int index) const { return m_rules[index]; }
std::shared_ptr<RuleBase> at(int index) const { return m_rules[index]; }
std::vector<std::shared_ptr<Rule> > m_rules;
std::vector<std::shared_ptr<RuleBase> > m_rules;
};

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@@ -40,7 +40,7 @@ class Rule;
class RulesSetPhases {
public:
bool insert(std::shared_ptr<Rule> rule);
bool insert(std::shared_ptr<RuleBase> rule);
int append(RulesSetPhases *from, std::ostringstream *err);
void dump() const;

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@@ -26,6 +26,7 @@
#include <utility>
#include <vector>
#include <memory>
#include <stack>
#endif
#include <stdlib.h>
@@ -48,6 +49,7 @@ typedef struct Rules_t RulesSet;
#include "modsecurity/collection/collection.h"
#include "modsecurity/variable_origin.h"
#ifndef NO_LOGS
#define ms_dbg(b, c) \
do { \
@@ -284,9 +286,38 @@ class TransactionAnchoredVariables {
int m_variableOffset;
};
class TransactionSecMarkerManagement {
public:
bool isInsideAMarker() const {
if (m_marker) {
return true;
}
return false;
}
std::shared_ptr<std::string> getCurrentMarker() const {
if (m_marker) {
return m_marker;
} else {
throw;
}
}
void removeMarker() {
m_marker.reset();
}
void addMarker(std::shared_ptr<std::string> name) {
m_marker = name;
}
private:
std::shared_ptr<std::string> m_marker;
};
/** @ingroup ModSecurity_CPP_API */
class Transaction : public TransactionAnchoredVariables {
class Transaction : public TransactionAnchoredVariables, public TransactionSecMarkerManagement {
public:
Transaction(ModSecurity *transaction, RulesSet *rules, void *logCbData);
Transaction(ModSecurity *transaction, RulesSet *rules, char *id,
@@ -518,12 +549,6 @@ class Transaction : public TransactionAnchoredVariables {
*/
std::shared_ptr<std::string> m_id;
/**
* Holds the SecMarker name that this transaction should wait to perform
* rules evaluation again.
*/
std::string m_marker;
/**
* Holds the amount of rules that should be skipped. If bigger than 0 the
* current rule should be skipped and the number needs to be decreased.