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Add debug statements to the classification code
This commit is contained in:
Shawn Routhier 2016-06-01 22:42:36 -07:00
commit cf14d0d21c
11 changed files with 859 additions and 19 deletions
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6
ChangeLog
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@ -1,3 +1,9 @@
1119. [func] sar
Add debug logging to the classification tokens. This uses
the loggers "kea-dhcp4.eval" and "kea-dhcp6.eval" to capture
details of the classification expression evaluations.
(Trac #4480, git TBD)
1118. [func] stephen
Make the database connection timeout a configurable parameter with
a default value of five seconds.

92
doc/guide/classify.xml
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@ -625,4 +625,96 @@
</para>
</section>
<section>
<title>Debugging Expressions</title>
<para>
While you are constructing your classification expressions you may
find it useful to enable logging see <xref linkend="logging"/> for
a more complete description of the logging facility.
</para>
<para>
To enable the debug statements in the classifciaton system you will
need to set the severity to "DEBUG" and the debug level to at least 55.
The specific loggers are "kea-dhcp4.eval" and "kea-dhcp6.eval".
</para>
<para>
In order to understand the logging statements one must understand a
bit about how expressions are evaluated, for a more complete description
refer to the design document at <ulink url="http://kea.isc.org/wiki/KeaDesigns"/>.
In brief there are two structures used during the evaluation of an expression:
a list of tokens which represent the expressions and a value stack which
represents the values being manipulated.
</para>
<para>
The list of tokens is created when the configuration file is processed with
most expressions and values being converted to a token. The list is organized
in reverse Polish notation. During execution the list will be traversed
in order. As each token is executed it will be able to pop values
from the top of the stack and eventually push its result on the top of the
stack. Imagine the following expression:
<screen>
"test": "substring(option[61].hex,0,3) == 'foo'",
</screen>
This will result in the following tokens:
<screen>
option, number (0), number (3), substring, text ('foo'), equals
</screen>
In this example the first three tokens will simply push values onto the
stack. The substring token will then remove those three values and
compute a result that it places on the stack. The text option also
places a value on the stack and finally the equals token removes the
two tokens on the stack and places its result on the stack.
</para>
<para>
When debug logging is enabled each time a token is evaluated it will
emit a log line indicating the values of any objects that were popped
off of the value stack and any objects that were pushed onto the value
stack.
</para>
<para>
The values will be displayed as either text if the command is known
to use text values or hex if the command either uses binary values or
can manipulate either text or binary values. For expressions that
pop multiple values off the stack the values will be displayed in
the order they were popped. For most expressions this won't matter
but for the concat expression the values are displayed in reverse
order from how they are written in the expression.
</para>
<para>
Let us assume that the following test has been entered into the configuration.
This example skips most of the configuration to concentrate on the test.
<screen>
"test": "substring(option[61].hex,0,3) == 'foo'",
</screen>
The logging might then resemble this:
<screen>
2016-05-19 13:35:04.163 DEBUG [kea.eval/44478] EVAL_DEBUG_OPTION Pushing option 61 with value 0x666F6F626172
2016-05-19 13:35:04.164 DEBUG [kea.eval/44478] EVAL_DEBUG_STRING Pushing text string "0"
2016-05-19 13:35:04.165 DEBUG [kea.eval/44478] EVAL_DEBUG_STRING Pushing text string "3"
2016-05-19 13:35:04.166 DEBUG [kea.eval/44478] EVAL_DEBUG_SUBSTRING Popping length 3, start 0,
string 0x666F6F626172 pushing result 0x666F6F
2016-05-19 13:35:04.167 DEBUG [kea.eval/44478] EVAL_DEBUG_STRING Pushing text string "foo"
2016-05-19 13:35:04.168 DEBUG [kea.eval/44478] EVAL_DEBUG_EQUAL Popping 0x666F6F and 0x666F6F pushing result "true"
</screen>
</para>
<note><para>
The debug logging may be quite verbose if you have a number of expressions
to evaluate. It is intended as an aide in helping you create and debug
your expressions. You should plan to disable debug logging when you have your
expressions working correctly. You also may wish to include only one set of
expressions at a time in the configuration file while debugging them in order
to limit the log statements. For example when adding a new set of expressions
you might find it more convenient to create a configuration file that only
includes the new expressions until you have them working correctly and then
add the new set to the main configuration file.
</para></note>
</section>
</chapter>

11
src/lib/eval/eval_log.h
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@ -1,4 +1,4 @@
// Copyright (C) 2015 Internet Systems Consortium, Inc. ("ISC")
// Copyright (C) 2015-2016 Internet Systems Consortium, Inc. ("ISC")
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
@ -21,12 +21,9 @@ namespace dhcp {
// The first level traces normal operations,
const int EVAL_DBG_TRACE = DBGLVL_TRACE_BASIC;
// The next level traces each call to hook code.
const int EVAL_DBG_CALLS = DBGLVL_TRACE_BASIC_DATA;
// Additional information on the calls. Report each call to a callout (even
// if there are multiple callouts on a hook) and each status return.
const int EVAL_DBG_EXTENDED_CALLS = DBGLVL_TRACE_DETAIL_DATA;
// Additional information on the calls. Report the values that were
// popped from or pushed to the value stack.
const int EVAL_DBG_STACK = DBGLVL_TRACE_DETAIL_DATA;
/// @brief Eval Logger
///

103
src/lib/eval/eval_messages.mes
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@ -1,4 +1,4 @@
# Copyright (C) 2015 Internet Systems Consortium, Inc. ("ISC")
# Copyright (C) 2015-2016 Internet Systems Consortium, Inc. ("ISC")
#
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
@ -6,6 +6,107 @@
$NAMESPACE isc::dhcp
# For use with TokenAnd
% EVAL_DEBUG_AND Popping %1 and %2 pushing %3
This debug message indicates that two values are popped from
the value stack. Then are then combined via logical and and
the result is pushed onto the value stack.
# For use with TokenConcat
% EVAL_DEBUG_CONCAT Popping %1 and %2 pushing %3
This debug message indicates that the two strings are being popped off
of the stack. They are then concatenated and the resulting string is
pushed onto the stack. The strings are displayed in hex.
# For use with TokenEqual
# Start with binary for the inputs for now, we may add text in the future.
% EVAL_DEBUG_EQUAL Popping %1 and %2 pushing result %3
This debug message indicates that the two strings are being popped off
of the value stack and the result of comparing them is being pushed onto
the value stack. The strings are displayed in hex.
# For use with TokenHexString
% EVAL_DEBUG_HEXSTRING Pushing hex string %1
This debug message indicates that the given binary string is being pushed
onto the value stack. The string is displayed in hex.
# For use with TokenIpAddress
% EVAL_DEBUG_IPADDRESS Pushing IPAddress %1
This debug message indicates that the given binary string is being pushed
onto the value stack. This represents either an IPv4 or IPv6 address.
The string is displayed in hex.
# For use with TokenNot
% EVAL_DEBUG_NOT Popping %1 pushing %2
This debug message indicates that the first value is popped from
the value stack, negated and then pushed onto the value stack.
The string is displayed in text.
# For use with TokenOption based classes. These include TokenOpton,
# TokenRelay4Option and TokenRelay6Option.
% EVAL_DEBUG_OPTION Pushing option %1 with value %2
This debug message indicates that the given string representing the
value of the requested option is being pushed onto the value stack.
The string may be the text or binary value of the string based on the
representation type requested (.text or .hex) or "true" or "false" if
the requested type is .exists. The option code may be for either an
option or a sub-option as requested in the classification statement.
# For use with TokenOr
% EVAL_DEBUG_OR Popping %1 and %2 pushing %3
This debug message indicates that two values are popped from
the value stack. Then are then combined via logical or and
the result is pushed onto the value stack. The string is displayed
in text.
# For use with TokenPkt4
% EVAL_DEBUG_PKT4 Pushing PKT4 field %1 with value %2
This debug message indicates that the given binary string representing
the value of the requested fied is being pushed onto the value stack.
The string is displayed in hex.
# For use with TokenPkt6
% EVAL_DEBUG_PKT6 Pushing PKT6 field %1 with value %2
This debug message indicates that the given binary string representing
the value of the requested fied is being pushed onto the value stack.
The string is displayed in hex.
# For use with TokenRelay6Field
% EVAL_DEBUG_RELAY6 Pushing PKT6 relay field %1 nest %2 with value %3
This debug message indicates that the given binary string representing
the value of the requested fied is being pushed onto the value stack.
The string is displayed in hex.
% EVAL_DEBUG_RELAY6_RANGE Pushing PKT6 relay field %1 nest %2 with value %3
This debug message is generated if the nest field is out of range. The
empty string will always be the value pushed onto the stack.
# For use with TokenString
% EVAL_DEBUG_STRING Pushing text string %1
This debug message indicates that the given text string is being pushed
onto the value stack. The string is displayed in text.
# For use with TokenSubstring
# Start with binary for the strings for now, we may add text in the future.
% EVAL_DEBUG_SUBSTRING Popping length %1, start %2, string %3 pushing result %4
This debug message indicates that three values are being popped from
the value stack and a result is being pushed onto the value stack. The
values being popped are the starting point and length of a substring to
extract from the given string. The resulting string is pushed onto
the stack. The strings are displayed in hex.
% EVAL_DEBUG_SUBSTRING_EMPTY Popping length %1, start %2, string %3 pushing result %4
This debug message indicates that the string popped from the stack was empty
and so the result will also be empty. The start, length and string are
still popped from the stack and the result is still pushed.
% EVAL_DEBUG_SUBSTRING_RANGE Popping length %1, start %2, string %3 pushing result %4
This debug message indicates that the value of start is outside of the
string and an empty result will be pushed onto the stack. The start,
length and string are still popped from the stack and the result is
still pushed. The strings are displayed in hex.
% EVAL_RESULT Expression %1 evaluated to %2
This debug message indicates that the expression has been evaluated
to said value. This message is mostly useful during debugging of the

1
src/lib/eval/tests/Makefile.am
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@ -43,6 +43,7 @@ libeval_unittests_LDADD += $(top_builddir)/src/lib/log/libkea-log.la
libeval_unittests_LDADD += $(top_builddir)/src/lib/util/threads/libkea-threads.la
libeval_unittests_LDADD += $(top_builddir)/src/lib/util/libkea-util.la
libeval_unittests_LDADD += $(top_builddir)/src/lib/exceptions/libkea-exceptions.la
libeval_unittests_LDADD += $(top_builddir)/src/lib/testutils/libkea-testutils.la
libeval_unittests_LDADD += $(CRYPTO_LIBS) $(LOG4CPLUS_LIBS)
libeval_unittests_LDADD += $(BOOST_LIBS) $(GTEST_LDADD)

380
src/lib/eval/tests/token_unittest.cc
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@ -5,12 +5,17 @@
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
#include <config.h>
#include <fstream>
#include <eval/token.h>
#include <dhcp/pkt4.h>
#include <dhcp/pkt6.h>
#include <dhcp/dhcp4.h>
#include <dhcp/dhcp6.h>
#include <dhcp/option_string.h>
#include <log/logger_manager.h>
#include <log/logger_name.h>
#include <log/logger_support.h>
#include <testutils/log_utils.h>
#include <boost/shared_ptr.hpp>
#include <boost/scoped_ptr.hpp>
@ -21,6 +26,8 @@
using namespace std;
using namespace isc::dhcp;
using namespace isc::asiolink;
using namespace isc::log;
using namespace isc::dhcp::test;
namespace {
@ -28,7 +35,8 @@ namespace {
///
/// This class provides several convenience objects to be used during testing
/// of the Token family of classes.
class TokenTest : public ::testing::Test {
class TokenTest : public LogContentTest {
public:
/// @brief Initializes Pkt4,Pkt6 and options that can be useful for
@ -229,6 +237,7 @@ public:
}
/// @todo: Add more option types here
};
// This tests the toBool() conversions
@ -262,6 +271,12 @@ TEST_F(TokenTest, string4) {
// Check that the evaluation put its value on the values stack.
ASSERT_EQ(1, values_.size());
EXPECT_EQ("foo", values_.top());
// Check that the debug output was correct. Add the strings
// to the test vector in the class and then call checkFile
// for comparison
addString("EVAL_DEBUG_STRING Pushing text string 'foo'");
EXPECT_TRUE(checkFile());
}
// This simple test checks that a TokenString, representing a constant string,
@ -277,6 +292,12 @@ TEST_F(TokenTest, string6) {
// Check that the evaluation put its value on the values stack.
ASSERT_EQ(1, values_.size());
EXPECT_EQ("foo", values_.top());
// Check that the debug output was correct. Add the strings
// to the test vector in the class and then call checkFile
// for comparison
addString("EVAL_DEBUG_STRING Pushing text string 'foo'");
EXPECT_TRUE(checkFile());
}
// This simple test checks that a TokenHexString, representing a constant
@ -306,7 +327,8 @@ TEST_F(TokenTest, hexstring4) {
// Store constant hexstring "0x63825363" (DHCP_OPTIONS_COOKIE).
ASSERT_NO_THROW(cookie.reset(new TokenHexString("0x63825363")));
// Make sure that tokens can be evaluated without exceptions.
// Make sure that tokens can be evaluated without exceptions,
// and verify the debug output
ASSERT_NO_THROW(empty->evaluate(*pkt4_, values_));
ASSERT_NO_THROW(bad->evaluate(*pkt4_, values_));
ASSERT_NO_THROW(nodigit->evaluate(*pkt4_, values_));
@ -332,6 +354,18 @@ TEST_F(TokenTest, hexstring4) {
EXPECT_EQ("", values_.top());
values_.pop();
EXPECT_EQ("", values_.top());
// Check that the debug output was correct. Add the strings
// to the test vector in the class and then call checkFile
// for comparison
addString("EVAL_DEBUG_HEXSTRING Pushing hex string 0x");
addString("EVAL_DEBUG_HEXSTRING Pushing hex string 0x");
addString("EVAL_DEBUG_HEXSTRING Pushing hex string 0x");
addString("EVAL_DEBUG_HEXSTRING Pushing hex string 0x");
addString("EVAL_DEBUG_HEXSTRING Pushing hex string 0x07");
addString("EVAL_DEBUG_HEXSTRING Pushing hex string 0x666F6F");
addString("EVAL_DEBUG_HEXSTRING Pushing hex string 0x63825363");
EXPECT_TRUE(checkFile());
}
// This simple test checks that a TokenHexString, representing a constant
@ -387,6 +421,18 @@ TEST_F(TokenTest, hexstring6) {
EXPECT_EQ("", values_.top());
values_.pop();
EXPECT_EQ("", values_.top());
// Check that the debug output was correct. Add the strings
// to the test vector in the class and then call checkFile
// for comparison
addString("EVAL_DEBUG_HEXSTRING Pushing hex string 0x");
addString("EVAL_DEBUG_HEXSTRING Pushing hex string 0x");
addString("EVAL_DEBUG_HEXSTRING Pushing hex string 0x");
addString("EVAL_DEBUG_HEXSTRING Pushing hex string 0x");
addString("EVAL_DEBUG_HEXSTRING Pushing hex string 0x07");
addString("EVAL_DEBUG_HEXSTRING Pushing hex string 0x666F6F");
addString("EVAL_DEBUG_HEXSTRING Pushing hex string 0x63825363");
EXPECT_TRUE(checkFile());
}
// This test checks that a TokenIpAddress, representing an IP address as
@ -432,6 +478,16 @@ TEST_F(TokenTest, ipaddress) {
uint8_t expected4[] = { 10, 0, 0, 1 };
EXPECT_EQ(4, values_.top().size());
EXPECT_EQ(0, memcmp(expected4, &values_.top()[0], 4));
// Check that the debug output was correct. Add the strings
// to the test vector in the class and then call checkFile
// for comparison
addString("EVAL_DEBUG_IPADDRESS Pushing IPAddress 0x0A000001");
addString("EVAL_DEBUG_IPADDRESS Pushing IPAddress "
"0x20010DB8000000000000000000000001");
addString("EVAL_DEBUG_IPADDRESS Pushing IPAddress 0x");
addString("EVAL_DEBUG_IPADDRESS Pushing IPAddress 0x");
EXPECT_TRUE(checkFile());
}
// This test checks if a token representing an option value is able to extract
@ -460,6 +516,13 @@ TEST_F(TokenTest, optionString4) {
// Then the content of the option 100.
EXPECT_EQ("hundred4", values_.top());
// Check that the debug output was correct. Add the strings
// to the test vector in the class and then call checkFile
// for comparison
addString("EVAL_DEBUG_OPTION Pushing option 100 with value 'hundred4'");
addString("EVAL_DEBUG_OPTION Pushing option 101 with value ''");
EXPECT_TRUE(checkFile());
}
// This test checks if a token representing option value is able to extract
@ -489,6 +552,13 @@ TEST_F(TokenTest, optionHexString4) {
// Then the content of the option 100.
EXPECT_EQ("hundred4", values_.top());
// Check that the debug output was correct. Add the strings
// to the test vector in the class and then call checkFile
// for comparison
addString("EVAL_DEBUG_OPTION Pushing option 100 with value 0x68756E6472656434");
addString("EVAL_DEBUG_OPTION Pushing option 101 with value 0x");
EXPECT_TRUE(checkFile());
}
// This test checks if a token representing an option value is able to check
@ -511,6 +581,13 @@ TEST_F(TokenTest, optionExistsString4) {
EXPECT_EQ("false", values_.top());
values_.pop();
EXPECT_EQ("true", values_.top());
// Check that the debug output was correct. Add the strings
// to the test vector in the class and then call checkFile
// for comparison
addString("EVAL_DEBUG_OPTION Pushing option 100 with value 'true'");
addString("EVAL_DEBUG_OPTION Pushing option 101 with value 'false'");
EXPECT_TRUE(checkFile());
}
// This test checks if a token representing an option value is able to extract
@ -539,6 +616,13 @@ TEST_F(TokenTest, optionString6) {
// Then the content of the option 100.
EXPECT_EQ("hundred6", values_.top());
// Check that the debug output was correct. Add the strings
// to the test vector in the class and then call checkFile
// for comparison
addString("EVAL_DEBUG_OPTION Pushing option 100 with value 'hundred6'");
addString("EVAL_DEBUG_OPTION Pushing option 101 with value ''");
EXPECT_TRUE(checkFile());
}
// This test checks if a token representing an option value is able to extract
@ -568,6 +652,13 @@ TEST_F(TokenTest, optionHexString6) {
// Then the content of the option 100.
EXPECT_EQ("hundred6", values_.top());
// Check that the debug output was correct. Add the strings
// to the test vector in the class and then call checkFile
// for comparison
addString("EVAL_DEBUG_OPTION Pushing option 100 with value 0x68756E6472656436");
addString("EVAL_DEBUG_OPTION Pushing option 101 with value 0x");
EXPECT_TRUE(checkFile());
}
// This test checks if a token representing an option value is able to check
@ -590,6 +681,13 @@ TEST_F(TokenTest, optionExistsString6) {
EXPECT_EQ("false", values_.top());
values_.pop();
EXPECT_EQ("true", values_.top());
// Check that the debug output was correct. Add the strings
// to the test vector in the class and then call checkFile
// for comparison
addString("EVAL_DEBUG_OPTION Pushing option 100 with value 'true'");
addString("EVAL_DEBUG_OPTION Pushing option 101 with value 'false'");
EXPECT_TRUE(checkFile());
}
// This test checks that the existing relay4 option can be found.
@ -610,6 +708,12 @@ TEST_F(TokenTest, relay4Option) {
// The option should be found and relay4[13] should evaluate to the
// content of that sub-option, i.e. "thirteen"
EXPECT_EQ("thirteen", values_.top());
// Check that the debug output was correct. Add the strings
// to the test vector in the class and then call checkFile
// for comparison
addString("EVAL_DEBUG_OPTION Pushing option 13 with value 'thirteen'");
EXPECT_TRUE(checkFile());
}
// This test checks that the code properly handles cases when
@ -631,6 +735,12 @@ TEST_F(TokenTest, relay4OptionNoSuboption) {
// The option should NOT be found (there is no sub-option 15),
// so the expression should evaluate to ""
EXPECT_EQ("", values_.top());
// Check that the debug output was correct. Add the strings
// to the test vector in the class and then call checkFile
// for comparison
addString("EVAL_DEBUG_OPTION Pushing option 15 with value ''");
EXPECT_TRUE(checkFile());
}
// This test checks that the code properly handles cases when
@ -651,6 +761,12 @@ TEST_F(TokenTest, relay4OptionNoRai) {
// The option should NOT be found (there is no sub-option 13),
// so the expression should evaluate to ""
EXPECT_EQ("", values_.top());
// Check that the debug output was correct. Add the strings
// to the test vector in the class and then call checkFile
// for comparison
addString("EVAL_DEBUG_OPTION Pushing option 13 with value ''");
EXPECT_TRUE(checkFile());
}
// This test checks that only the RAI is searched for the requested
@ -707,6 +823,16 @@ TEST_F(TokenTest, relay4RAIOnly) {
EXPECT_NO_THROW(t_->evaluate(*pkt4_, values_));
ASSERT_EQ(1, values_.size());
EXPECT_EQ("false", values_.top());
// Check that the debug output was correct. Add the strings
// to the test vector in the class and then call checkFile
// for comparison
addString("EVAL_DEBUG_OPTION Pushing option 13 with value 'thirteen'");
addString("EVAL_DEBUG_OPTION Pushing option 1 with value 'one'");
addString("EVAL_DEBUG_OPTION Pushing option 70 with value ''");
addString("EVAL_DEBUG_OPTION Pushing option 1 with value 'true'");
addString("EVAL_DEBUG_OPTION Pushing option 70 with value 'false'");
EXPECT_TRUE(checkFile());
}
// Verifies if the DHCPv4 packet fields can be extracted.
@ -787,6 +913,18 @@ TEST_F(TokenTest, pkt4Fields) {
clearStack();
ASSERT_NO_THROW(t_.reset(new TokenPkt4(TokenPkt4::HLEN)));
EXPECT_THROW(t_->evaluate(*pkt6_, values_), EvalTypeError);
// Check that the debug output was correct. Add the strings
// to the test vector in the class and then call checkFile
// for comparison
addString("EVAL_DEBUG_PKT4 Pushing PKT4 field mac with value 0x01020304050607");
addString("EVAL_DEBUG_PKT4 Pushing PKT4 field hlen with value 0x00000007");
addString("EVAL_DEBUG_PKT4 Pushing PKT4 field htype with value 0x0000007B");
addString("EVAL_DEBUG_PKT4 Pushing PKT4 field giaddr with value 0xC0000201");
addString("EVAL_DEBUG_PKT4 Pushing PKT4 field ciaddr with value 0xC0000202");
addString("EVAL_DEBUG_PKT4 Pushing PKT4 field yiaddr with value 0xC0000203");
addString("EVAL_DEBUG_PKT4 Pushing PKT4 field siaddr with value 0xC0000204");
EXPECT_TRUE(checkFile());
}
// This test checks if a token representing an == operator is able to
@ -818,6 +956,13 @@ TEST_F(TokenTest, optionEqualFalse) {
// result of "foo" == "bar" comparision.
ASSERT_EQ(1, values_.size());
EXPECT_EQ("false", values_.top());
// Check that the debug output was correct. Add the strings
// to the test vector in the class and then call checkFile
// for comparison
addString("EVAL_DEBUG_EQUAL Popping 0x626172 and 0x666F6F "
"pushing result 'false'");
EXPECT_TRUE(checkFile());
}
// This test checks if a token representing an == operator is able to
@ -834,6 +979,13 @@ TEST_F(TokenTest, optionEqualTrue) {
// result of "foo" == "foo" comparision.
ASSERT_EQ(1, values_.size());
EXPECT_EQ("true", values_.top());
// Check that the debug output was correct. Add the strings
// to the test vector in the class and then call checkFile
// for comparison
addString("EVAL_DEBUG_EQUAL Popping 0x666F6F and 0x666F6F "
"pushing result 'true'");
EXPECT_TRUE(checkFile());
}
// This test checks if a token representing a not is able to
@ -867,6 +1019,13 @@ TEST_F(TokenTest, operatorNot) {
EXPECT_NO_THROW(t_->evaluate(*pkt4_, values_));
ASSERT_EQ(1, values_.size());
EXPECT_EQ("true", values_.top());
// Check that the debug output was correct. Add the strings
// to the test vector in the class and then call checkFile
// for comparison
addString("EVAL_DEBUG_NOT Popping 'true' pushing 'false'");
addString("EVAL_DEBUG_NOT Popping 'false' pushing 'true'");
EXPECT_TRUE(checkFile());
}
// This test checks if a token representing an and is able to
@ -907,7 +1066,7 @@ TEST_F(TokenTest, operatorAndFalse) {
ASSERT_EQ(1, values_.size());
EXPECT_EQ("false", values_.top());
// After true and false, checks false and true
// After true and false, check false and true
values_.push("true");
EXPECT_NO_THROW(t_->evaluate(*pkt4_, values_));
ASSERT_EQ(1, values_.size());
@ -918,6 +1077,14 @@ TEST_F(TokenTest, operatorAndFalse) {
EXPECT_NO_THROW(t_->evaluate(*pkt4_, values_));
ASSERT_EQ(1, values_.size());
EXPECT_EQ("false", values_.top());
// Check that the debug output was correct. Add the strings
// to the test vector in the class and then call checkFile
// for comparison
addString("EVAL_DEBUG_AND Popping 'false' and 'true' pushing 'false'");
addString("EVAL_DEBUG_AND Popping 'true' and 'false' pushing 'false'");
addString("EVAL_DEBUG_AND Popping 'false' and 'false' pushing 'false'");
EXPECT_TRUE(checkFile());
}
// This test checks if a token representing an and is able to
@ -933,6 +1100,12 @@ TEST_F(TokenTest, operatorAndTrue) {
// After evaluation there should be a single "true" value
ASSERT_EQ(1, values_.size());
EXPECT_EQ("true", values_.top());
// Check that the debug output was correct. Add the strings
// to the test vector in the class and then call checkFile
// for comparison
addString("EVAL_DEBUG_AND Popping 'true' and 'true' pushing 'true'");
EXPECT_TRUE(checkFile());
}
// This test checks if a token representing an or is able to
@ -972,6 +1145,12 @@ TEST_F(TokenTest, operatorOrFalse) {
// After evaluation there should be a single "false" value
ASSERT_EQ(1, values_.size());
EXPECT_EQ("false", values_.top());
// Check that the debug output was correct. Add the strings
// to the test vector in the class and then call checkFile
// for comparison
addString("EVAL_DEBUG_OR Popping 'false' and 'false' pushing 'false'");
EXPECT_TRUE(checkFile());
}
// This test checks if a token representing an == operator is able to
@ -999,9 +1178,15 @@ TEST_F(TokenTest, operatorOrTrue) {
EXPECT_NO_THROW(t_->evaluate(*pkt4_, values_));
ASSERT_EQ(1, values_.size());
EXPECT_EQ("true", values_.top());
}
};
// Check that the debug output was correct. Add the strings
// to the test vector in the class and then call checkFile
// for comparison
addString("EVAL_DEBUG_OR Popping 'true' and 'false' pushing 'true'");
addString("EVAL_DEBUG_OR Popping 'false' and 'true' pushing 'true'");
addString("EVAL_DEBUG_OR Popping 'true' and 'true' pushing 'true'");
EXPECT_TRUE(checkFile());
}
// This test checks if a token representing a substring request
// throws an exception if there aren't enough values on the stack.
@ -1028,6 +1213,13 @@ TEST_F(TokenTest, substringNotEnoughValues) {
// one after the evaluate
ASSERT_EQ(1, values_.size());
EXPECT_EQ("", values_.top());
// Check that the debug output was correct. Add the strings
// to the test vector in the class and then call checkFile
// for comparison
addString("EVAL_DEBUG_SUBSTRING_EMPTY Popping length 0, start 0, "
"string 0x pushing result 0x");
EXPECT_TRUE(checkFile());
}
// Test getting the whole string in different ways
@ -1043,6 +1235,19 @@ TEST_F(TokenTest, substringWholeString) {
// Get the whole string counting from the back
verifySubstringEval("foobar", "-6", "all", "foobar");
// Check that the debug output was correct. Add the strings
// to the test vector in the class and then call checkFile
// for comparison
addString("EVAL_DEBUG_SUBSTRING Popping length 6, start 0, "
"string 0x666F6F626172 pushing result 0x666F6F626172");
addString("EVAL_DEBUG_SUBSTRING Popping length all, start 0, "
"string 0x666F6F626172 pushing result 0x666F6F626172");
addString("EVAL_DEBUG_SUBSTRING Popping length 123456, start 0, "
"string 0x666F6F626172 pushing result 0x666F6F626172");
addString("EVAL_DEBUG_SUBSTRING Popping length all, start -6, "
"string 0x666F6F626172 pushing result 0x666F6F626172");
EXPECT_TRUE(checkFile());
}
// Test getting a suffix, in this case the last 3 characters
@ -1051,6 +1256,19 @@ TEST_F(TokenTest, substringTrailer) {
verifySubstringEval("foobar", "3", "all", "bar");
verifySubstringEval("foobar", "-3", "all", "bar");
verifySubstringEval("foobar", "-3", "123", "bar");
// Check that the debug output was correct. Add the strings
// to the test vector in the class and then call checkFile
// for comparison
addString("EVAL_DEBUG_SUBSTRING Popping length 3, start 3, "
"string 0x666F6F626172 pushing result 0x626172");
addString("EVAL_DEBUG_SUBSTRING Popping length all, start 3, "
"string 0x666F6F626172 pushing result 0x626172");
addString("EVAL_DEBUG_SUBSTRING Popping length all, start -3, "
"string 0x666F6F626172 pushing result 0x626172");
addString("EVAL_DEBUG_SUBSTRING Popping length 123, start -3, "
"string 0x666F6F626172 pushing result 0x626172");
EXPECT_TRUE(checkFile());
}
// Test getting the middle of the string in different ways
@ -1059,6 +1277,19 @@ TEST_F(TokenTest, substringMiddle) {
verifySubstringEval("foobar", "-5", "4", "ooba");
verifySubstringEval("foobar", "-1", "-4", "ooba");
verifySubstringEval("foobar", "5", "-4", "ooba");
// Check that the debug output was correct. Add the strings
// to the test vector in the class and then call checkFile
// for comparison
addString("EVAL_DEBUG_SUBSTRING Popping length 4, start 1, "
"string 0x666F6F626172 pushing result 0x6F6F6261");
addString("EVAL_DEBUG_SUBSTRING Popping length 4, start -5, "
"string 0x666F6F626172 pushing result 0x6F6F6261");
addString("EVAL_DEBUG_SUBSTRING Popping length -4, start -1, "
"string 0x666F6F626172 pushing result 0x6F6F6261");
addString("EVAL_DEBUG_SUBSTRING Popping length -4, start 5, "
"string 0x666F6F626172 pushing result 0x6F6F6261");
EXPECT_TRUE(checkFile());
}
// Test getting the last letter in different ways
@ -1069,6 +1300,23 @@ TEST_F(TokenTest, substringLastLetter) {
verifySubstringEval("foobar", "-1", "all", "r");
verifySubstringEval("foobar", "-1", "1", "r");
verifySubstringEval("foobar", "-1", "5", "r");
// Check that the debug output was correct. Add the strings
// to the test vector in the class and then call checkFile
// for comparison
addString("EVAL_DEBUG_SUBSTRING Popping length all, start 5, "
"string 0x666F6F626172 pushing result 0x72");
addString("EVAL_DEBUG_SUBSTRING Popping length 1, start 5, "
"string 0x666F6F626172 pushing result 0x72");
addString("EVAL_DEBUG_SUBSTRING Popping length 5, start 5, "
"string 0x666F6F626172 pushing result 0x72");
addString("EVAL_DEBUG_SUBSTRING Popping length all, start -1, "
"string 0x666F6F626172 pushing result 0x72");
addString("EVAL_DEBUG_SUBSTRING Popping length 1, start -1, "
"string 0x666F6F626172 pushing result 0x72");
addString("EVAL_DEBUG_SUBSTRING Popping length 5, start -1, "
"string 0x666F6F626172 pushing result 0x72");
EXPECT_TRUE(checkFile());
}
// Test we get only what is available if we ask for a longer string
@ -1084,6 +1332,27 @@ TEST_F(TokenTest, substringLength) {
verifySubstringEval("foobar", "4", "4", "ar");
verifySubstringEval("foobar", "5", "4", "r");
verifySubstringEval("foobar", "6", "4", "");
// Check that the debug output was correct. Add the strings
// to the test vector in the class and then call checkFile
// for comparison
addString("EVAL_DEBUG_SUBSTRING Popping length -4, start 0, "
"string 0x666F6F626172 pushing result 0x");
addString("EVAL_DEBUG_SUBSTRING Popping length -4, start 1, "
"string 0x666F6F626172 pushing result 0x66");
addString("EVAL_DEBUG_SUBSTRING Popping length -4, start 2, "
"string 0x666F6F626172 pushing result 0x666F");
addString("EVAL_DEBUG_SUBSTRING Popping length -4, start 3, "
"string 0x666F6F626172 pushing result 0x666F6F");
addString("EVAL_DEBUG_SUBSTRING Popping length 4, start 3, "
"string 0x666F6F626172 pushing result 0x626172");
addString("EVAL_DEBUG_SUBSTRING Popping length 4, start 4, "
"string 0x666F6F626172 pushing result 0x6172");
addString("EVAL_DEBUG_SUBSTRING Popping length 4, start 5, "
"string 0x666F6F626172 pushing result 0x72");
addString("EVAL_DEBUG_SUBSTRING_RANGE Popping length 4, start 6, "
"string 0x666F6F626172 pushing result 0x");
EXPECT_TRUE(checkFile());
}
// Test that we get nothing if the starting postion is out of the string
@ -1097,6 +1366,23 @@ TEST_F(TokenTest, substringStartingPosition) {
verifySubstringEval("foobar", "6", "1", "");
verifySubstringEval("foobar", "6", "-11", "");
verifySubstringEval("foobar", "6", "all", "");
// Check that the debug output was correct. Add the strings
// to the test vector in the class and then call checkFile
// for comparison
addString("EVAL_DEBUG_SUBSTRING_RANGE Popping length 1, start -7, "
"string 0x666F6F626172 pushing result 0x");
addString("EVAL_DEBUG_SUBSTRING_RANGE Popping length -11, start -7, "
"string 0x666F6F626172 pushing result 0x");
addString("EVAL_DEBUG_SUBSTRING_RANGE Popping length all, start -7, "
"string 0x666F6F626172 pushing result 0x");
addString("EVAL_DEBUG_SUBSTRING_RANGE Popping length 1, start 6, "
"string 0x666F6F626172 pushing result 0x");
addString("EVAL_DEBUG_SUBSTRING_RANGE Popping length -11, start 6, "
"string 0x666F6F626172 pushing result 0x");
addString("EVAL_DEBUG_SUBSTRING_RANGE Popping length all, start 6, "
"string 0x666F6F626172 pushing result 0x");
EXPECT_TRUE(checkFile());
}
// Check what happens if we use strings that aren't numbers for start or length
@ -1109,6 +1395,9 @@ TEST_F(TokenTest, substringBadParams) {
verifySubstringEval("foobar", "0", "0ick", "", true);
verifySubstringEval("foobar", "0", "ick0", "", true);
verifySubstringEval("foobar", "0", "allaboard", "", true);
// These should result in a throw which should generate it's own
// log entry
}
// lastly check that we don't get anything if the string is empty or
@ -1116,6 +1405,15 @@ TEST_F(TokenTest, substringBadParams) {
TEST_F(TokenTest, substringReturnEmpty) {
verifySubstringEval("", "0", "all", "");
verifySubstringEval("foobar", "0", "0", "");
// Check that the debug output was correct. Add the strings
// to the test vector in the class and then call checkFile
// for comparison
addString("EVAL_DEBUG_SUBSTRING_EMPTY Popping length all, start 0, "
"string 0x pushing result 0x");
addString("EVAL_DEBUG_SUBSTRING Popping length 0, start 0, "
"string 0x666F6F626172 pushing result 0x");
EXPECT_TRUE(checkFile());
}
// Check if we can use the substring and equal tokens together
@ -1137,8 +1435,6 @@ TEST_F(TokenTest, substringEquals) {
values_.push("ooba");
// The substring values
// Subsring requires three values on the stack, try
// with 0, 1 and 2 all should throw an exception
values_.push("foobar");
values_.push("1");
values_.push("4");
@ -1160,8 +1456,6 @@ TEST_F(TokenTest, substringEquals) {
values_.push("foob");
// The substring values
// Subsring requires three values on the stack, try
// with 0, 1 and 2 all should throw an exception
values_.push("foobar");
values_.push("1");
values_.push("4");
@ -1175,6 +1469,18 @@ TEST_F(TokenTest, substringEquals) {
ASSERT_EQ(1, values_.size());
EXPECT_EQ("false", values_.top());
// Check that the debug output was correct. Add the strings
// to the test vector in the class and then call checkFile
// for comparison
addString("EVAL_DEBUG_SUBSTRING Popping length 4, start 1, "
"string 0x666F6F626172 pushing result 0x6F6F6261");
addString("EVAL_DEBUG_EQUAL Popping 0x6F6F6261 and 0x6F6F6261 "
"pushing result 'true'");
addString("EVAL_DEBUG_SUBSTRING Popping length 4, start 1, "
"string 0x666F6F626172 pushing result 0x6F6F6261");
addString("EVAL_DEBUG_EQUAL Popping 0x6F6F6261 and 0x666F6F62 "
"pushing result 'false'");
EXPECT_TRUE(checkFile());
}
// This test checks if a token representing a concat request
@ -1197,6 +1503,13 @@ TEST_F(TokenTest, concat) {
// Check the result
ASSERT_EQ(1, values_.size());
EXPECT_EQ("foobar", values_.top());
// Check that the debug output was correct. Add the strings
// to the test vector in the class and then call checkFile
// for comparison
addString("EVAL_DEBUG_CONCAT Popping 0x626172 and 0x666F6F "
"pushing 0x666F6F626172");
EXPECT_TRUE(checkFile());
}
// This test checks if we can properly extract the link and peer
@ -1250,6 +1563,29 @@ TEST_F(TokenTest, relay6Field) {
// be tidy
clearStack();
// Check that the debug output was correct. Add the strings
// to the test vector in the class and then call checkFile
// for comparison
addString("EVAL_DEBUG_RELAY6 Pushing PKT6 relay field linkaddr nest 0 "
"with value 0x00000000000000000000000000000000");
addString("EVAL_DEBUG_RELAY6 Pushing PKT6 relay field peeraddr nest 0 "
"with value 0x00000000000000000000000000000000");
addString("EVAL_DEBUG_RELAY6 Pushing PKT6 relay field linkaddr nest 1 "
"with value 0x00010000000000000000000000000001");
addString("EVAL_DEBUG_RELAY6 Pushing PKT6 relay field peeraddr nest 1 "
"with value 0x00010000000000000000000000000002");
addString("EVAL_DEBUG_RELAY6_RANGE Pushing PKT6 relay field linkaddr nest 2 "
"with value 0x");
addString("EVAL_DEBUG_RELAY6 Pushing PKT6 relay field linkaddr nest 1 "
"with value 0x00010000000000000000000000000001");
addString("EVAL_DEBUG_IPADDRESS Pushing IPAddress "
"0x00010000000000000000000000000001");
addString("EVAL_DEBUG_EQUAL Popping 0x00010000000000000000000000000001 "
"and 0x00010000000000000000000000000001 pushing result 'true'");
EXPECT_TRUE(checkFile());
}
// This test checks if we can properly extract an option
@ -1283,6 +1619,23 @@ TEST_F(TokenTest, relay6Option) {
// Level 2, no encapsulation so no options
verifyRelay6Option(2, 100, TokenOption::TEXTUAL, "");
// Check that the debug output was correct. Add the strings
// to the test vector in the class and then call checkFile
// for comparison
addString("EVAL_DEBUG_OPTION Pushing option 100 with value 'hundred.zero'");
addString("EVAL_DEBUG_OPTION Pushing option 100 with value 'true'");
addString("EVAL_DEBUG_OPTION Pushing option 101 with value 'hundredone.zero'");
addString("EVAL_DEBUG_OPTION Pushing option 102 with value ''");
addString("EVAL_DEBUG_OPTION Pushing option 102 with value 'false'");
addString("EVAL_DEBUG_OPTION Pushing option 100 with value 'hundred.one'");
addString("EVAL_DEBUG_OPTION Pushing option 101 with value ''");
addString("EVAL_DEBUG_OPTION Pushing option 102 with value 'hundredtwo.one'");
addString("EVAL_DEBUG_OPTION Pushing option 100 with value ''");
EXPECT_TRUE(checkFile());
}
// Verifies if the DHCPv6 packet fields can be extracted.
@ -1309,4 +1662,13 @@ TEST_F(TokenTest, pkt6Fields) {
clearStack();
ASSERT_NO_THROW(t_.reset(new TokenPkt6(TokenPkt6::TRANSID)));
EXPECT_THROW(t_->evaluate(*pkt4_, values_), EvalTypeError);
// Check that the debug output was correct. Add the strings
// to the test vector in the class and then call checkFile
// for comparison
addString("EVAL_DEBUG_PKT6 Pushing PKT6 field msgtype with value 0x00000001");
addString("EVAL_DEBUG_PKT6 Pushing PKT6 field transid with value 0x00003039");
EXPECT_TRUE(checkFile());
}
};

124
src/lib/eval/token.cc
View File

@ -21,6 +21,10 @@ void
TokenString::evaluate(const Pkt& /*pkt*/, ValueStack& values) {
// Literals only push, nothing to pop
values.push(value_);
// Log what we pushed
LOG_DEBUG(eval_logger, EVAL_DBG_STACK, EVAL_DEBUG_STRING)
.arg('\'' + value_ + '\'');
}
TokenHexString::TokenHexString(const string& str) : value_("") {
@ -55,6 +59,11 @@ void
TokenHexString::evaluate(const Pkt& /*pkt*/, ValueStack& values) {
// Literals only push, nothing to pop
values.push(value_);
// Log what we pushed
LOG_DEBUG(eval_logger, EVAL_DBG_STACK, EVAL_DEBUG_HEXSTRING)
.arg("0x" + util::encode::encodeHex(std::vector<uint8_t>(value_.begin(),
value_.end())));
}
TokenIpAddress::TokenIpAddress(const string& addr) : value_("") {
@ -76,6 +85,11 @@ void
TokenIpAddress::evaluate(const Pkt& /*pkt*/, ValueStack& values) {
// Literals only push, nothing to pop
values.push(value_);
// Log what we pushed
LOG_DEBUG(eval_logger, EVAL_DBG_STACK, EVAL_DEBUG_IPADDRESS)
.arg("0x" + util::encode::encodeHex(std::vector<uint8_t>(value_.begin(),
value_.end())));
}
OptionPtr
@ -106,6 +120,20 @@ TokenOption::evaluate(const Pkt& pkt, ValueStack& values) {
// Push value of the option or empty string if there was no such option
// in the packet.
values.push(opt_str);
// Log what we pushed, both exists and textual are simple text
// and can be output directly. We also include the code number
// of the requested option.
if (representation_type_ == HEXADECIMAL) {
LOG_DEBUG(eval_logger, EVAL_DBG_STACK, EVAL_DEBUG_OPTION)
.arg(option_code_)
.arg("0x" + util::encode::encodeHex(std::vector<uint8_t>(opt_str.begin(),
opt_str.end())));
} else {
LOG_DEBUG(eval_logger, EVAL_DBG_STACK, EVAL_DEBUG_OPTION)
.arg(option_code_)
.arg('\'' + opt_str + '\'');
}
}
TokenRelay4Option::TokenRelay4Option(const uint16_t option_code,
@ -129,6 +157,7 @@ void
TokenPkt4::evaluate(const Pkt& pkt, ValueStack& values) {
vector<uint8_t> binary;
string type_str;
try {
// Check if it's a Pkt4. If it's not, the dynamic_cast will throw
// std::bad_cast (failed dynamic_cast returns NULL for pointers and
@ -145,22 +174,27 @@ TokenPkt4::evaluate(const Pkt& pkt, ValueStack& values) {
"Packet does not have hardware address");
}
binary = hwaddr->hwaddr_;
type_str = "mac";
break;
}
case GIADDR:
binary = pkt4.getGiaddr().toBytes();
type_str = "giaddr";
break;
case CIADDR:
binary = pkt4.getCiaddr().toBytes();
type_str = "ciaddr";
break;
case YIADDR:
binary = pkt4.getYiaddr().toBytes();
type_str = "yiaddr";
break;
case SIADDR:
binary = pkt4.getSiaddr().toBytes();
type_str = "siaddr";
break;
case HLEN:
@ -169,6 +203,7 @@ TokenPkt4::evaluate(const Pkt& pkt, ValueStack& values) {
binary.push_back(0);
binary.push_back(0);
binary.push_back(pkt4.getHlen());
type_str = "hlen";
break;
case HTYPE:
@ -177,6 +212,7 @@ TokenPkt4::evaluate(const Pkt& pkt, ValueStack& values) {
binary.push_back(0);
binary.push_back(0);
binary.push_back(pkt4.getHtype());
type_str = "htype";
break;
default:
@ -194,6 +230,12 @@ TokenPkt4::evaluate(const Pkt& pkt, ValueStack& values) {
memmove(&value[0], &binary[0], binary.size());
}
values.push(value);
// Log what we pushed
LOG_DEBUG(eval_logger, EVAL_DBG_STACK, EVAL_DEBUG_PKT4)
.arg(type_str)
.arg("0x" + util::encode::encodeHex(std::vector<uint8_t>(value.begin(),
value.end())));
}
void
@ -213,6 +255,14 @@ TokenEqual::evaluate(const Pkt& /*pkt*/, ValueStack& values) {
values.push("true");
else
values.push("false");
// Log what we popped and pushed
LOG_DEBUG(eval_logger, EVAL_DBG_STACK, EVAL_DEBUG_EQUAL)
.arg("0x" + util::encode::encodeHex(std::vector<uint8_t>(op1.begin(),
op1.end())))
.arg("0x" + util::encode::encodeHex(std::vector<uint8_t>(op2.begin(),
op2.end())))
.arg('\'' + values.top() + '\'');
}
void
@ -233,6 +283,13 @@ TokenSubstring::evaluate(const Pkt& /*pkt*/, ValueStack& values) {
// If we have no string to start with we push an empty string and leave
if (string_str.empty()) {
values.push("");
// Log what we popped and pushed
LOG_DEBUG(eval_logger, EVAL_DBG_STACK, EVAL_DEBUG_SUBSTRING_EMPTY)
.arg(len_str)
.arg(start_str)
.arg("0x")
.arg("0x");
return;
}
@ -266,6 +323,14 @@ TokenSubstring::evaluate(const Pkt& /*pkt*/, ValueStack& values) {
// empty string and leave
if ((start_pos < -string_length) || (start_pos >= string_length)) {
values.push("");
// Log what we popped and pushed
LOG_DEBUG(eval_logger, EVAL_DBG_STACK, EVAL_DEBUG_SUBSTRING_RANGE)
.arg(len_str)
.arg(start_str)
.arg("0x" + util::encode::encodeHex(std::vector<uint8_t>(string_str.begin(),
string_str.end())))
.arg("0x");
return;
}
@ -288,6 +353,15 @@ TokenSubstring::evaluate(const Pkt& /*pkt*/, ValueStack& values) {
// and finally get the substring
values.push(string_str.substr(start_pos, length));
// Log what we popped and pushed
LOG_DEBUG(eval_logger, EVAL_DBG_STACK, EVAL_DEBUG_SUBSTRING)
.arg(len_str)
.arg(start_str)
.arg("0x" + util::encode::encodeHex(std::vector<uint8_t>(string_str.begin(),
string_str.end())))
.arg("0x" + util::encode::encodeHex(std::vector<uint8_t>(values.top().begin(),
values.top().end())));
}
void
@ -305,6 +379,15 @@ TokenConcat::evaluate(const Pkt& /*pkt*/, ValueStack& values) {
// The top of the stack was evaluated last so this is the right order
values.push(op2 + op1);
// Log what we popped and pushed
LOG_DEBUG(eval_logger, EVAL_DBG_STACK, EVAL_DEBUG_CONCAT)
.arg("0x" + util::encode::encodeHex(std::vector<uint8_t>(op1.begin(),
op1.end())))
.arg("0x" + util::encode::encodeHex(std::vector<uint8_t>(op2.begin(),
op2.end())))
.arg("0x" + util::encode::encodeHex(std::vector<uint8_t>(values.top().begin(),
values.top().end())));
}
void
@ -323,6 +406,11 @@ TokenNot::evaluate(const Pkt& /*pkt*/, ValueStack& values) {
} else {
values.push("false");
}
// Log what we popped and pushed
LOG_DEBUG(eval_logger, EVAL_DBG_STACK, EVAL_DEBUG_NOT)
.arg('\'' + op + '\'')
.arg('\'' + values.top() + '\'');
}
void
@ -345,6 +433,12 @@ TokenAnd::evaluate(const Pkt& /*pkt*/, ValueStack& values) {
} else {
values.push("false");
}
// Log what we popped and pushed
LOG_DEBUG(eval_logger, EVAL_DBG_STACK, EVAL_DEBUG_AND)
.arg('\'' + op1 + '\'')
.arg('\'' + op2 + '\'')
.arg('\'' + values.top() + '\'');
}
void
@ -367,6 +461,12 @@ TokenOr::evaluate(const Pkt& /*pkt*/, ValueStack& values) {
} else {
values.push("false");
}
// Log what we popped and pushed
LOG_DEBUG(eval_logger, EVAL_DBG_STACK, EVAL_DEBUG_OR)
.arg('\'' + op1 + '\'')
.arg('\'' + op2 + '\'')
.arg('\'' + values.top() + '\'');
}
OptionPtr TokenRelay6Option::getOption(const Pkt& pkt) {
@ -399,6 +499,7 @@ void
TokenRelay6Field::evaluate(const Pkt& pkt, ValueStack& values) {
vector<uint8_t> binary;
string type_str;
try {
// Check if it's a Pkt6. If it's not the dynamic_cast will
// throw std::bad_cast.
@ -409,9 +510,11 @@ TokenRelay6Field::evaluate(const Pkt& pkt, ValueStack& values) {
// Now that we have the right type of packet we can
// get the option and return it.
case LINKADDR:
type_str = "linkaddr";
binary = pkt6.getRelay6LinkAddress(nest_level_).toBytes();
break;
case PEERADDR:
type_str = "peeraddr";
binary = pkt6.getRelay6PeerAddress(nest_level_).toBytes();
break;
}
@ -419,6 +522,11 @@ TokenRelay6Field::evaluate(const Pkt& pkt, ValueStack& values) {
// The only exception we expect is OutOfRange if the nest
// level is invalid. We push "" in that case.
values.push("");
// Log what we pushed
LOG_DEBUG(eval_logger, EVAL_DBG_STACK, EVAL_DEBUG_RELAY6_RANGE)
.arg(type_str)
.arg(unsigned(nest_level_))
.arg("0x");
return;
}
} catch (const std::bad_cast&) {
@ -431,12 +539,20 @@ TokenRelay6Field::evaluate(const Pkt& pkt, ValueStack& values) {
memmove(&value[0], &binary[0], binary.size());
}
values.push(value);
// Log what we pushed
LOG_DEBUG(eval_logger, EVAL_DBG_STACK, EVAL_DEBUG_RELAY6)
.arg(type_str)
.arg(unsigned(nest_level_))
.arg("0x" + util::encode::encodeHex(std::vector<uint8_t>(value.begin(),
value.end())));
}
void
TokenPkt6::evaluate(const Pkt& pkt, ValueStack& values) {
vector<uint8_t> binary;
string type_str;
try {
// Check if it's a Pkt6. If it's not the dynamic_cast will throw
// std::bad_cast (failed dynamic_cast returns NULL for pointers and
@ -450,6 +566,7 @@ TokenPkt6::evaluate(const Pkt& pkt, ValueStack& values) {
binary.push_back(0);
binary.push_back(0);
binary.push_back(pkt6.getType());
type_str = "msgtype";
break;
}
case TRANSID: {
@ -459,6 +576,7 @@ TokenPkt6::evaluate(const Pkt& pkt, ValueStack& values) {
binary.push_back((transid >> 16) & 0xFF);
binary.push_back((transid >> 8) & 0xFF);
binary.push_back(transid & 0xFF);
type_str = "transid";
break;
}
default:
@ -474,4 +592,10 @@ TokenPkt6::evaluate(const Pkt& pkt, ValueStack& values) {
value.resize(binary.size());
memmove(&value[0], &binary[0], binary.size());
values.push(value);
// Log what we pushed
LOG_DEBUG(eval_logger, EVAL_DBG_STACK, EVAL_DEBUG_PKT6)
.arg(type_str)
.arg("0x" + util::encode::encodeHex(std::vector<uint8_t>(value.begin(),
value.end())));
}

4
src/lib/eval/token.h
View File

@ -568,7 +568,7 @@ protected:
uint8_t nest_level_; ///< nesting level of the relay block to use
};
/// @breif Token that represents a value of a field within a DHCPv6 relay
/// @brief Token that represents a value of a field within a DHCPv6 relay
/// encapsulation
///
/// This represents a reference to a field with a given DHCPv6 relay encapsulation.
@ -650,7 +650,7 @@ public:
/// @brief enum value that determines the field.
enum FieldType {
MSGTYPE, ///< msg type
TRANSID ///< transaction id (integer but manipulated as as string)
TRANSID ///< transaction id (integer but manipulated as a string)
};
/// @brief Constructor (does nothing)

1
src/lib/testutils/Makefile.am
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@ -8,6 +8,7 @@ if HAVE_GTEST
noinst_LTLIBRARIES = libkea-testutils.la
libkea_testutils_la_SOURCES = io_utils.cc io_utils.h
libkea_testutils_la_SOURCES += log_utils.cc log_utils.h
libkea_testutils_la_SOURCES += unix_control_client.h unix_control_client.cc
libkea_testutils_la_CPPFLAGS = $(AM_CPPFLAGS) $(GTEST_INCLUDES)
libkea_testutils_la_LIBADD = $(top_builddir)/src/lib/asiolink/libkea-asiolink.la

74
src/lib/testutils/log_utils.cc Normal file
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@ -0,0 +1,74 @@
// Copyright (C) 2016 Internet Systems Consortium, Inc. ("ISC")
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
#include <testutils/log_utils.h>
namespace isc {
namespace dhcp {
namespace test {
LogContentTest::LogContentTest() {
// Get rid of any old files
remFile();
// Set up the logger for use in checking the debug statements.
// We send the debug statements to a file which we can
// check after the evaluations have completed. We also
// set the log severity and debug levels so that the log
// statements are executed.
LoggerSpecification spec(getRootLoggerName(),
keaLoggerSeverity(isc::log::DEBUG),
keaLoggerDbglevel(isc::log::MAX_DEBUG_LEVEL));
OutputOption option;
option.destination = OutputOption::DEST_FILE;
option.filename = string(LogContentTest::LOG_FILE);
spec.addOutputOption(option);
LoggerManager manager;
manager.process(spec);
}
LogContentTest:: ~LogContentTest() {
remFile();
}
bool LogContentTest::checkFile() {
ifstream file(LOG_FILE);
EXPECT_TRUE(file.is_open());
string line, exp_line;
int i = 0;
bool found = true;
while (getline(file, line) && (i != exp_strings_.size())) {
exp_line = exp_strings_[i];
i++;
if (string::npos == line.find(exp_line)) {
found = false;
}
}
file.close();
if ((i != exp_strings_.size()) || (found == false))
return (false);
return (true);
}
void LogContentTest::remFile() {
static_cast<void>(remove(LOG_FILE));
}
void LogContentTest::addString(const string& new_string) {
exp_strings_.push_back(new_string);
}
// Set up the name of the LOG_FILE for use in checking
// the debug statements
const char *LogContentTest::LOG_FILE = "test.log";
}; // end of isc::dhcp::test namespace
}; // end of isc::dhcp namespace
}; // end of isc namespace

82
src/lib/testutils/log_utils.h Normal file
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@ -0,0 +1,82 @@
// Copyright (C) 2016 Internet Systems Consortium, Inc. ("ISC")
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.
#ifndef TEST_LOG_UTILS_H
#define TEST_LOG_UTILS_H
#include <string>
#include <fstream>
//#include <config.h>
#include <log/logger_manager.h>
#include <log/logger_name.h>
#include <log/logger_support.h>
//#include <boost/shared_ptr.hpp>
//#include <boost/scoped_ptr.hpp>
#include <gtest/gtest.h>
using namespace std;
using namespace isc::log;
namespace isc {
namespace dhcp {
namespace test {
/// @brief Test class for testing things that emit log entries
///
/// This class provides a convenient method for testing out
/// things that emit log entries. The class sets up the logging
/// to log everything into a file and provides a routine to
/// check the expected strings vs the actual log entries.
/// The user needs to call the addString function for each of
/// the strings they expect in the output in the order they
/// will be emitted.
class LogContentTest : public ::testing::Test {
public:
/// @brief Initializes the logger setup for using
/// in checking log statements
///
/// @todo add support to adjust the severity and debug level
/// to allow for better control over the statements that
/// get logged.
LogContentTest();
virtual ~LogContentTest();
/// @brief check that the requested strings are in the
/// test log file in the requested order.
///
/// This routine expects that the caller has properly
/// set up the vector of expected strings by calling
/// addString() with the necessary strings.
///
/// @return true if all of the strings match
bool checkFile();
/// @brief remove the test log file
void remFile();
/// @brief Add a string to the vector of expected strings
///
/// @param new_string the string to add to the end of the vector
/// @return void
void addString(const string& new_string);
vector<string> exp_strings_;
static const char* LOG_FILE;
};
}; // end of isc::dhcp::test namespace
}; // end of isc::dhcp namespace
}; // end of isc namespace
#endif // TEST_LOG_UTILS_H