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check identity buffer size

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orignal 2014-12-04 19:28:20 -05:00
parent 519330015f
commit 4c8d85870b
3 changed files with 19 additions and 5 deletions
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17
Identity.cpp
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@ -157,14 +157,27 @@ namespace data
size_t IdentityEx::FromBuffer (const uint8_t * buf, size_t len)
{
if (len < DEFAULT_IDENTITY_SIZE)
{
LogPrint (eLogError, "Identity buffer length ", len, " is too small");
return 0;
}
memcpy (&m_StandardIdentity, buf, DEFAULT_IDENTITY_SIZE);
delete[] m_ExtendedBuffer;
if (m_StandardIdentity.certificate.length)
{
m_ExtendedLen = be16toh (m_StandardIdentity.certificate.length);
m_ExtendedBuffer = new uint8_t[m_ExtendedLen];
memcpy (m_ExtendedBuffer, buf + DEFAULT_IDENTITY_SIZE, m_ExtendedLen);
if (m_ExtendedLen + DEFAULT_IDENTITY_SIZE <= len)
{
m_ExtendedBuffer = new uint8_t[m_ExtendedLen];
memcpy (m_ExtendedBuffer, buf + DEFAULT_IDENTITY_SIZE, m_ExtendedLen);
}
else
{
LogPrint (eLogError, "Certificate length ", m_ExtendedLen, " exceeds buffer length ", len - DEFAULT_IDENTITY_SIZE);
return 0;
}
}
else
{