granicus.if.org Git - icinga2/blob - lib/livestatus/attributefilter.cpp

   1 /* Icinga 2 | (c) 2012 Icinga GmbH | GPLv2+ */
   2
   3 #include "livestatus/attributefilter.hpp"
   4 #include "base/convert.hpp"
   5 #include "base/array.hpp"
   6 #include "base/objectlock.hpp"
   7 #include "base/logger.hpp"
   8 #include <boost/regex.hpp>
   9 #include <boost/algorithm/string/predicate.hpp>
  10
  11 using namespace icinga;
  12
  13 AttributeFilter::AttributeFilter(String column, String op, String operand)
  14         : m_Column(std::move(column)), m_Operator(std::move(op)), m_Operand(std::move(operand))
  15 { }
  16
  17 bool AttributeFilter::Apply(const Table::Ptr& table, const Value& row)
  18 {
  19         Column column = table->GetColumn(m_Column);
  20
  21         Value value = column.ExtractValue(row);
  22
  23         if (value.IsObjectType<Array>()) {
  24                 Array::Ptr array = value;
  25
  26                 if (m_Operator == ">=" || m_Operator == "<") {
  27                         bool negate = (m_Operator == "<");
  28
  29                         ObjectLock olock(array);
  30                         for (const String& item : array) {
  31                                 if (item == m_Operand)
  32                                         return !negate; /* Item found in list. */
  33                         }
  34
  35                         return negate; /* Item not found in list. */
  36                 } else if (m_Operator == "=") {
  37                         return (array->GetLength() == 0);
  38                 } else {
  39                         BOOST_THROW_EXCEPTION(std::invalid_argument("Invalid operator for column '" + m_Column + "': " + m_Operator + " (expected '>=' or '=')."));
  40                 }
  41         } else {
  42                 if (m_Operator == "=") {
  43                         if (value.GetType() == ValueNumber || value.GetType() == ValueBoolean)
  44                                 return (static_cast<double>(value) == Convert::ToDouble(m_Operand));
  45                         else
  46                                 return (static_cast<String>(value) == m_Operand);
  47                 } else if (m_Operator == "~") {
  48                         bool ret;
  49                         try {
  50                                 boost::regex expr(m_Operand.GetData());
  51                                 String operand = value;
  52                                 boost::smatch what;
  53                                 ret = boost::regex_search(operand.GetData(), what, expr);
  54                         } catch (boost::exception&) {
  55                                 Log(LogWarning, "AttributeFilter")
  56                                         << "Regex '" << m_Operand << " " << m_Operator << " " << value << "' error.";
  57                                 ret = false;
  58                         }
  59
  60                         //Log(LogDebug, "LivestatusListener/AttributeFilter")
  61                         //    << "Attribute filter '" << m_Operand + " " << m_Operator << " "
  62                         //    << value << "' " << (ret ? "matches" : "doesn't match") << ".";
  63
  64                         return ret;
  65                 } else if (m_Operator == "=~") {
  66                         bool ret;
  67                         try {
  68                                 String operand = value;
  69                                 ret = boost::iequals(operand, m_Operand.GetData());
  70                         } catch (boost::exception&) {
  71                                 Log(LogWarning, "AttributeFilter")
  72                                         << "Case-insensitive equality '" << m_Operand << " " << m_Operator << " " << value << "' error.";
  73                                 ret = false;
  74                         }
  75
  76                         return ret;
  77                 } else if (m_Operator == "~~") {
  78                         bool ret;
  79                         try {
  80                                 boost::regex expr(m_Operand.GetData(), boost::regex::icase);
  81                                 String operand = value;
  82                                 boost::smatch what;
  83                                 ret = boost::regex_search(operand.GetData(), what, expr);
  84                         } catch (boost::exception&) {
  85                                 Log(LogWarning, "AttributeFilter")
  86                                         << "Regex '" << m_Operand << " " << m_Operator << " " << value << "' error.";
  87                                 ret = false;
  88                         }
  89
  90                         //Log(LogDebug, "LivestatusListener/AttributeFilter")
  91                         //    << "Attribute filter '" << m_Operand << " " << m_Operator << " "
  92                         //    << value << "' " << (ret ? "matches" : "doesn't match") << ".";
  93
  94                         return ret;
  95                 } else if (m_Operator == "<") {
  96                         if (value.GetType() == ValueNumber)
  97                                 return (static_cast<double>(value) < Convert::ToDouble(m_Operand));
  98                         else
  99                                 return (static_cast<String>(value) < m_Operand);
 100                 } else if (m_Operator == ">") {
 101                         if (value.GetType() == ValueNumber)
 102                                 return (static_cast<double>(value) > Convert::ToDouble(m_Operand));
 103                         else
 104                                 return (static_cast<String>(value) > m_Operand);
 105                 } else if (m_Operator == "<=") {
 106                         if (value.GetType() == ValueNumber)
 107                                 return (static_cast<double>(value) <= Convert::ToDouble(m_Operand));
 108                         else
 109                                 return (static_cast<String>(value) <= m_Operand);
 110                 } else if (m_Operator == ">=") {
 111                         if (value.GetType() == ValueNumber)
 112                                 return (static_cast<double>(value) >= Convert::ToDouble(m_Operand));
 113                         else
 114                                 return (static_cast<String>(value) >= m_Operand);
 115                 } else {
 116                         BOOST_THROW_EXCEPTION(std::invalid_argument("Unknown operator for column '" + m_Column + "': " + m_Operator));
 117                 }
 118         }
 119
 120         return false;
 121 }