1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
|
// Copyright (C) 2011-2015 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 <config.h>
#include <string>
#include <sstream>
#include <util/buffer.h>
#include <dns/messagerenderer.h>
#include <dns/name.h>
#include <dns/rdata.h>
#include <dns/rdataclass.h>
#include <dns/rdata/generic/detail/lexer_util.h>
using namespace std;
using namespace isc::dns;
using namespace isc::util;
using isc::dns::rdata::generic::detail::createNameFromLexer;
// BEGIN_ISC_NAMESPACE
// BEGIN_RDATA_NAMESPACE
/// \brief Constructor from string.
///
/// \c rp_str must be formatted as follows:
/// \code <mailbox name> <text name>
/// \endcode
/// where both fields must represent a valid domain name.
///
/// \throw InvalidRdataText The number of RDATA fields (must be 2) is
/// incorrect.
/// \throw std::bad_alloc Memory allocation for names fails.
/// \throw Other The constructor of the \c Name class will throw if the
/// given name is invalid.
RP::RP(const std::string& rp_str) :
// We cannot construct both names in the initialization list due to the
// necessary text processing, so we have to initialize them with a dummy
// name and replace them later.
mailbox_(Name::ROOT_NAME()), text_(Name::ROOT_NAME())
{
try {
std::istringstream ss(rp_str);
MasterLexer lexer;
lexer.pushSource(ss);
mailbox_ = createNameFromLexer(lexer, NULL);
text_ = createNameFromLexer(lexer, NULL);
if (lexer.getNextToken().getType() != MasterToken::END_OF_FILE) {
isc_throw(InvalidRdataText, "extra input text for RP: "
<< rp_str);
}
} catch (const MasterLexer::LexerError& ex) {
isc_throw(InvalidRdataText, "Failed to construct RP from '" <<
rp_str << "': " << ex.what());
}
}
/// \brief Constructor with a context of MasterLexer.
///
/// The \c lexer should point to the beginning of valid textual representation
/// of an RP RDATA. The MAILBOX and TEXT fields can be non-absolute if \c
/// origin is non-NULL, in which case \c origin is used to make them absolute.
///
/// \throw MasterLexer::LexerError General parsing error such as missing field.
/// \throw Other Exceptions from the Name and constructors if construction of
/// textual fields as these objects fail.
///
/// \param lexer A \c MasterLexer object parsing a master file for the
/// RDATA to be created
/// \param origin If non NULL, specifies the origin of SERVER when it
/// is non-absolute.
RP::RP(MasterLexer& lexer, const Name* origin,
MasterLoader::Options, MasterLoaderCallbacks&) :
mailbox_(createNameFromLexer(lexer, origin)),
text_(createNameFromLexer(lexer, origin))
{
}
/// \brief Constructor from wire-format data.
///
/// This constructor doesn't check the validity of the second parameter (rdata
/// length) for parsing.
/// If necessary, the caller will check consistency.
///
/// \throw std::bad_alloc Memory allocation for names fails.
/// \throw Other The constructor of the \c Name class will throw if the
/// names in the wire is invalid.
RP::RP(InputBuffer& buffer, size_t) : mailbox_(buffer), text_(buffer) {
}
/// \brief Copy constructor.
///
/// \throw std::bad_alloc Memory allocation fails in copying internal
/// member variables (this should be very rare).
RP::RP(const RP& other) :
Rdata(), mailbox_(other.mailbox_), text_(other.text_)
{}
/// \brief Convert the \c RP to a string.
///
/// The output of this method is formatted as described in the "from string"
/// constructor (\c RP(const std::string&))).
///
/// \throw std::bad_alloc Internal resource allocation fails.
///
/// \return A \c string object that represents the \c RP object.
std::string
RP::toText() const {
return (mailbox_.toText() + " " + text_.toText());
}
/// \brief Render the \c RP in the wire format without name compression.
///
/// \throw std::bad_alloc Internal resource allocation fails.
///
/// \param buffer An output buffer to store the wire data.
void
RP::toWire(OutputBuffer& buffer) const {
mailbox_.toWire(buffer);
text_.toWire(buffer);
}
/// \brief Render the \c RP in the wire format with taking into account
/// compression.
///
// Type RP is not "well-known", and name compression must be disabled
// per RFC3597.
///
/// \throw std::bad_alloc Internal resource allocation fails.
///
/// \param renderer DNS message rendering context that encapsulates the
/// output buffer and name compression information.
void
RP::toWire(AbstractMessageRenderer& renderer) const {
renderer.writeName(mailbox_, false);
renderer.writeName(text_, false);
}
/// \brief Compare two instances of \c RP RDATA.
///
/// See documentation in \c Rdata.
int
RP::compare(const Rdata& other) const {
const RP& other_rp = dynamic_cast<const RP&>(other);
const int cmp = compareNames(mailbox_, other_rp.mailbox_);
if (cmp != 0) {
return (cmp);
}
return (compareNames(text_, other_rp.text_));
}
// END_RDATA_NAMESPACE
// END_ISC_NAMESPACE
|
