firebird/firebird-mirror
firebird/firebird-mirror
8
0
Fork 1
mirror of https://github.com/FirebirdSQL/firebird.git synced 2025-01-23 02:03:04 +01:00
Code Issues

Fixed #7033: BlockReader misses sanity checks

Browse Source
This commit is contained in:
Dmitry Yemanov 2021-11-04 19:05:27 +03:00
parent fc686678b2
commit ebc9508008
1 changed files with 24 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

24
src/jrd/replication/Applier.cpp
View File

@ -104,11 +104,17 @@ namespace
UCHAR getByte()
{
if (m_data >= m_end)
malformed();
return *m_data++;
}
SSHORT getInt16()
{
if (m_data + sizeof(SSHORT) > m_end)
malformed();
SSHORT value;
memcpy(&value, m_data, sizeof(SSHORT));
m_data += sizeof(SSHORT);
@ -117,6 +123,9 @@ namespace
SLONG getInt32()
{
if (m_data + sizeof(SLONG) > m_end)
malformed();
SLONG value;
memcpy(&value, m_data, sizeof(SLONG));
m_data += sizeof(SLONG);
@ -125,6 +134,9 @@ namespace
SINT64 getInt64()
{
if (m_data + sizeof(SINT64) > m_end)
malformed();
SINT64 value;
memcpy(&value, m_data, sizeof(SINT64));
m_data += sizeof(SINT64);
@ -140,6 +152,10 @@ namespace
string getString()
{
const auto length = getInt32();
if (m_data + length > m_end)
malformed();
const string str((const char*) m_data, length);
m_data += length;
return str;
@ -147,6 +163,9 @@ namespace
const UCHAR* getBinary(ULONG length)
{
if (m_data + length > m_end)
malformed();
const auto ptr = m_data;
m_data += length;
return ptr;
@ -175,6 +194,11 @@ namespace
const UCHAR* m_data;
const UCHAR* const m_end;
HalfStaticArray<MetaString, 64> m_atoms;
static void malformed()
{
raiseError("Replication block is malformed");
}
};
class LocalThreadContext