/usr/include/Poco/Net/MessageHeader.h is in libpoco-dev 1.8.0.1-1ubuntu4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 | //
// MessageHeader.h
//
// Library: Net
// Package: Messages
// Module: MessageHeader
//
// Definition of the MessageHeader class.
//
// Copyright (c) 2005-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#ifndef Net_MessageHeader_INCLUDED
#define Net_MessageHeader_INCLUDED
#include "Poco/Net/Net.h"
#include "Poco/Net/NameValueCollection.h"
#include <ostream>
#include <istream>
#include <vector>
namespace Poco {
namespace Net {
class Net_API MessageHeader: public NameValueCollection
/// A collection of name-value pairs that are used in
/// various internet protocols like HTTP and SMTP.
///
/// The name is case-insensitive.
///
/// There can be more than one name-value pair with the
/// same name.
///
/// MessageHeader supports writing and reading the
/// header data in RFC 2822 format.
///
/// The maximum number of fields can be restricted
/// by calling setFieldLimit(). This is useful to
/// defend against certain kinds of denial-of-service
/// attacks. The limit is only enforced when parsing
/// header fields from a stream, not when programmatically
/// adding them. The default limit is 100.
{
public:
MessageHeader();
/// Creates the MessageHeader.
MessageHeader(const MessageHeader& messageHeader);
/// Creates the MessageHeader by copying
/// another one.
virtual ~MessageHeader();
/// Destroys the MessageHeader.
MessageHeader& operator = (const MessageHeader& messageHeader);
/// Assigns the content of another MessageHeader.
virtual void write(std::ostream& ostr) const;
/// Writes the message header to the given output stream.
///
/// The format is one name-value pair per line, with
/// name and value separated by a colon and lines
/// delimited by a carriage return and a linefeed
/// character. See RFC 2822 for details.
virtual void read(std::istream& istr);
/// Reads the message header from the given input stream.
///
/// See write() for the expected format.
/// Also supported is folding of field content, according
/// to section 2.2.3 of RFC 2822.
///
/// Reading stops at the first empty line (a line only
/// containing \r\n or \n), as well as at the end of
/// the stream.
///
/// Some basic sanity checking of the input stream is
/// performed.
///
/// Throws a MessageException if the input stream is
/// malformed.
int getFieldLimit() const;
/// Returns the maximum number of header fields
/// allowed.
///
/// See setFieldLimit() for more information.
void setFieldLimit(int limit);
/// Sets the maximum number of header fields
/// allowed. This limit is used to defend certain
/// kinds of denial-of-service attacks.
/// Specify 0 for unlimited (not recommended).
///
/// The default limit is 100.
bool hasToken(const std::string& fieldName, const std::string& token) const;
/// Returns true iff the field with the given fieldName contains
/// the given token. Tokens in a header field are expected to be
/// comma-separated and are case insensitive.
static void splitElements(const std::string& s, std::vector<std::string>& elements, bool ignoreEmpty = true);
/// Splits the given string into separate elements. Elements are expected
/// to be separated by commas.
///
/// For example, the string
/// text/plain; q=0.5, text/html, text/x-dvi; q=0.8
/// is split into the elements
/// text/plain; q=0.5
/// text/html
/// text/x-dvi; q=0.8
///
/// Commas enclosed in double quotes do not split elements.
///
/// If ignoreEmpty is true, empty elements are not returned.
static void splitParameters(const std::string& s, std::string& value, NameValueCollection& parameters);
/// Splits the given string into a value and a collection of parameters.
/// Parameters are expected to be separated by semicolons.
///
/// Enclosing quotes of parameter values are removed.
///
/// For example, the string
/// multipart/mixed; boundary="MIME_boundary_01234567"
/// is split into the value
/// multipart/mixed
/// and the parameter
/// boundary -> MIME_boundary_01234567
static void splitParameters(const std::string::const_iterator& begin, const std::string::const_iterator& end, NameValueCollection& parameters);
/// Splits the given string into a collection of parameters.
/// Parameters are expected to be separated by semicolons.
///
/// Enclosing quotes of parameter values are removed.
static void quote(const std::string& value, std::string& result, bool allowSpace = false);
/// Checks if the value must be quoted. If so, the value is
/// appended to result, enclosed in double-quotes.
/// Otherwise, the value is appended to result as-is.
static void decodeRFC2047(const std::string& ins, std::string& outs, const std::string& charset = "UTF-8");
static std::string decodeWord(const std::string& text, const std::string& charset = "UTF-8");
/// Decode RFC2047 string.
private:
enum Limits
/// Limits for basic sanity checks when reading a header
{
MAX_NAME_LENGTH = 256,
MAX_VALUE_LENGTH = 8192,
DFL_FIELD_LIMIT = 100
};
int _fieldLimit;
};
} } // namespace Poco::Net
#endif // Net_MessageHeader_INCLUDED
|