lib/json
1
0
Fork 0
mirror of https://github.com/nlohmann/json.git synced 2025-07-12 09:21:42 +03:00
Code Activity

Merge branch 'develop' into feature/fuzzer

Browse Source
This commit is contained in:
Niels Lohmann
2016-12-28 12:11:51 +01:00
parent e3b036348b acb7e0558d
commit 55be721615
25 changed files with 215 additions and 30 deletions
Download Patch File Download Diff File Expand all files Collapse all files

82
src/json.hpp.re2c
View File

@ -3793,7 +3793,7 @@ class basic_json
container `c`, the expression `c.front()` is equivalent to `*c.begin()`.
@return In case of a structured type (array or object), a reference to the
first element is returned. In cast of number, string, or boolean values, a
first element is returned. In case of number, string, or boolean values, a
reference to the value is returned.
@complexity Constant.
@ -3836,7 +3836,7 @@ class basic_json
@endcode
@return In case of a structured type (array or object), a reference to the
last element is returned. In cast of number, string, or boolean values, a
last element is returned. In case of number, string, or boolean values, a
reference to the value is returned.
@complexity Constant.
@ -4187,10 +4187,14 @@ class basic_json
element is not found or the JSON value is not an object, end() is
returned.
@note This method always returns @ref end() when executed on a JSON type
that is not an object.
@param[in] key key value of the element to search for
@return Iterator to an element with key equivalent to @a key. If no such
element is found, past-the-end (see end()) iterator is returned.
element is found or the JSON value is not an object, past-the-end (see
@ref end()) iterator is returned.
@complexity Logarithmic in the size of the JSON object.
@ -4233,6 +4237,9 @@ class basic_json
default `std::map` type, the return value will always be `0` (@a key was
not found) or `1` (@a key was found).
@note This method always returns `0` when executed on a JSON type that is
not an object.
@param[in] key key value of the element to count
@return Number of elements with key @a key. If the JSON value is not an
@ -4792,9 +4799,6 @@ class basic_json
object | `{}`
array | `[]`
@note Floating-point numbers are set to `0.0` which will be serialized to
`0`. The vale type remains @ref number_float_t.
@complexity Linear in the size of the JSON value.
@liveexample{The example below shows the effect of `clear()` to different
@ -6831,6 +6835,44 @@ class basic_json
}
}
/*
@brief checks if given lengths do not exceed the size of a given vector
To secure the access to the byte vector during CBOR/MessagePack
deserialization, bytes are copied from the vector into buffers. This
function checks if the number of bytes to copy (@a len) does not exceed the
size @s size of the vector. Additionally, an @a offset is given from where
to start reading the bytes.
This function checks whether reading the bytes is safe; that is, offset is a
valid index in the vector, offset+len
@param[in] size size of the byte vector
@param[in] len number of bytes to read
@param[in] offset offset where to start reading
vec: x x x x x X X X X X
^ ^ ^
0 offset len
@throws out_of_range if `len > v.size()`
*/
static void check_length(const size_t size, const size_t len, const size_t offset)
{
// simple case: requested length is greater than the vector's length
if (len > size or offset > size)
{
throw std::out_of_range("len out of range");
}
// second case: adding offset would result in overflow
if ((size > (std::numeric_limits<size_t>::max() - offset)))
{
throw std::out_of_range("len+offset out of range");
}
}
/*!
@brief checks if a given length does not exceed the size of a given vector
@ -6903,7 +6945,7 @@ class basic_json
const size_t len = v[current_idx] & 0x1f;
const size_t offset = current_idx + 1;
idx += len; // skip content bytes
check_length(v, len + offset);
check_length(v.size(), len, offset);
return std::string(reinterpret_cast<const char*>(v.data()) + offset, len);
}
}
@ -7007,7 +7049,7 @@ class basic_json
const auto len = static_cast<size_t>(get_from_vector<uint8_t>(v, current_idx));
const size_t offset = current_idx + 2;
idx += len + 1; // skip size byte + content bytes
check_length(v, len + offset);
check_length(v.size(), len, offset);
return std::string(reinterpret_cast<const char*>(v.data()) + offset, len);
}
@ -7016,7 +7058,7 @@ class basic_json
const auto len = static_cast<size_t>(get_from_vector<uint16_t>(v, current_idx));
const size_t offset = current_idx + 3;
idx += len + 2; // skip 2 size bytes + content bytes
check_length(v, len + offset);
check_length(v.size(), len, offset);
return std::string(reinterpret_cast<const char*>(v.data()) + offset, len);
}
@ -7025,7 +7067,7 @@ class basic_json
const auto len = static_cast<size_t>(get_from_vector<uint32_t>(v, current_idx));
const size_t offset = current_idx + 5;
idx += len + 4; // skip 4 size bytes + content bytes
check_length(v, len + offset);
check_length(v.size(), len, offset);
return std::string(reinterpret_cast<const char*>(v.data()) + offset, len);
}
@ -7244,7 +7286,7 @@ class basic_json
const auto len = static_cast<size_t>(v[current_idx] - 0x60);
const size_t offset = current_idx + 1;
idx += len; // skip content bytes
check_length(v, len + offset);
check_length(v.size(), len, offset);
return std::string(reinterpret_cast<const char*>(v.data()) + offset, len);
}
@ -7253,7 +7295,7 @@ class basic_json
const auto len = static_cast<size_t>(get_from_vector<uint8_t>(v, current_idx));
const size_t offset = current_idx + 2;
idx += len + 1; // skip size byte + content bytes
check_length(v, len + offset);
check_length(v.size(), len, offset);
return std::string(reinterpret_cast<const char*>(v.data()) + offset, len);
}
@ -7262,7 +7304,7 @@ class basic_json
const auto len = static_cast<size_t>(get_from_vector<uint16_t>(v, current_idx));
const size_t offset = current_idx + 3;
idx += len + 2; // skip 2 size bytes + content bytes
check_length(v, len + offset);
check_length(v.size(), len, offset);
return std::string(reinterpret_cast<const char*>(v.data()) + offset, len);
}
@ -7271,7 +7313,7 @@ class basic_json
const auto len = static_cast<size_t>(get_from_vector<uint32_t>(v, current_idx));
const size_t offset = current_idx + 5;
idx += len + 4; // skip 4 size bytes + content bytes
check_length(v, len + offset);
check_length(v.size(), len, offset);
return std::string(reinterpret_cast<const char*>(v.data()) + offset, len);
}
@ -7280,7 +7322,7 @@ class basic_json
const auto len = static_cast<size_t>(get_from_vector<uint64_t>(v, current_idx));
const size_t offset = current_idx + 9;
idx += len + 8; // skip 8 size bytes + content bytes
check_length(v, len + offset);
check_length(v.size(), len, offset);
return std::string(reinterpret_cast<const char*>(v.data()) + offset, len);
}
@ -7621,6 +7663,11 @@ class basic_json
*/
static basic_json from_msgpack(const std::vector<uint8_t>& v)
{
if (v.empty())
{
throw std::invalid_argument("empty vector");
}
size_t i = 0;
return from_msgpack_internal(v, i);
}
@ -7678,6 +7725,11 @@ class basic_json
*/
static basic_json from_cbor(const std::vector<uint8_t>& v)
{
if (v.empty())
{
throw std::invalid_argument("empty vector");
}
size_t i = 0;
return from_cbor_internal(v, i);
}