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Fix nullptr implicit cast on fields::set()

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fixes #2085
This commit is contained in:
Richard Hodges
2020-09-11 18:56:42 +02:00
parent 91d9457ab9
commit bea31bfff6
3 changed files with 88 additions and 1 deletions
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1
CHANGELOG.md
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@ -2,6 +2,7 @@ Version XXX:
* Fix assert when basic_stream used as underlying of ssl::stream with zero-length write.
* Add Sec-* HTTP headers.
* Fix nullptr implicit cast on `fields::set()`.
--------------------------------------------------------------------------------

19
include/boost/beast/http/fields.hpp
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@ -425,6 +425,11 @@ public:
void
insert(field name, string_view const& value);
/* Set a field from a null pointer (deleted).
*/
void
insert(field, std::nullptr_t) = delete;
/** Insert a field.
If one or more fields with the same name already exist,
@ -438,6 +443,11 @@ public:
void
insert(string_view name, string_view const& value);
/* Insert a field from a null pointer (deleted).
*/
void
insert(string_view, std::nullptr_t) = delete;
/** Insert a field.
If one or more fields with the same name already exist,
@ -457,6 +467,9 @@ public:
insert(field name, string_view name_string,
string_view const& value);
void
insert(field, string_view, std::nullptr_t) = delete;
/** Set a field value, removing any other instances of that field.
First removes any values with matching field names, then
@ -471,6 +484,9 @@ public:
void
set(field name, string_view const& value);
void
set(field, std::nullptr_t) = delete;
/** Set a field value, removing any other instances of that field.
First removes any values with matching field names, then
@ -483,6 +499,9 @@ public:
void
set(string_view name, string_view const& value);
void
set(string_view, std::nullptr_t) = delete;
/** Remove a field.
References and iterators to the erased elements are

67
test/beast/http/fields.cpp
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@ -1004,6 +1004,72 @@ public:
BEAST_EXPECT(req.count("abc") == 3);
}
template<class Arg1, class InArg>
struct set_test
{
static auto test(...) ->
std::false_type;
template<class U = InArg>
static auto test(U arg) ->
decltype(std::declval<fields>().
set(std::declval<Arg1>(),
std::declval<U>()),
std::true_type());
static constexpr bool value =
decltype(test(std::declval<InArg>()))::value;
};
template<class Arg1, class InArg>
struct insert_test
{
static auto test(...) ->
std::false_type;
template<class U = InArg>
static auto test(U arg) ->
decltype(std::declval<fields>().
insert(std::declval<Arg1>(),
std::declval<U>()),
std::true_type());
static constexpr bool value =
decltype(test(std::declval<InArg>()))::value;
};
void
testIssue2085()
{
BOOST_STATIC_ASSERT((! set_test<field, int>::value));
BOOST_STATIC_ASSERT((! set_test<field, std::nullptr_t>::value));
BOOST_STATIC_ASSERT((! set_test<field, double>::value));
BOOST_STATIC_ASSERT((! set_test<string_view, int>::value));
BOOST_STATIC_ASSERT((! set_test<string_view, std::nullptr_t>::value));
BOOST_STATIC_ASSERT((! set_test<string_view, double>::value));
BOOST_STATIC_ASSERT(( set_test<field, const char*>::value));
BOOST_STATIC_ASSERT(( set_test<field, string_view>::value));
BOOST_STATIC_ASSERT(( set_test<field, const char(&)[10]>::value));
BOOST_STATIC_ASSERT(( set_test<string_view, const char*>::value));
BOOST_STATIC_ASSERT(( set_test<string_view, string_view>::value));
BOOST_STATIC_ASSERT(( set_test<string_view, const char(&)[10]>::value));
BOOST_STATIC_ASSERT((! insert_test<field, int>::value));
BOOST_STATIC_ASSERT((! insert_test<field, std::nullptr_t>::value));
BOOST_STATIC_ASSERT((! insert_test<field, double>::value));
BOOST_STATIC_ASSERT((! insert_test<string_view, int>::value));
BOOST_STATIC_ASSERT((! insert_test<string_view, std::nullptr_t>::value));
BOOST_STATIC_ASSERT((! insert_test<string_view, double>::value));
BOOST_STATIC_ASSERT(( insert_test<field, const char*>::value));
BOOST_STATIC_ASSERT(( insert_test<field, string_view>::value));
BOOST_STATIC_ASSERT(( insert_test<field, const char(&)[10]>::value));
BOOST_STATIC_ASSERT(( insert_test<string_view, const char*>::value));
BOOST_STATIC_ASSERT(( insert_test<string_view, string_view>::value));
BOOST_STATIC_ASSERT(( insert_test<string_view, const char(&)[10]>::value));
}
void
run() override
{
@ -1020,6 +1086,7 @@ public:
testChunked();
testIssue1828();
boost::ignore_unused(&fields_test::testIssue2085);
}
};