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Code Issues Releases Activity

common buffer size

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orignal 2019-05-23 11:49:54 -04:00
parent 78bfde237f
commit af33df3004
1 changed files with 10 additions and 11 deletions
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21
libi2pd/RouterInfo.cpp
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@ -26,10 +26,11 @@ namespace data
}
RouterInfo::RouterInfo (const std::string& fullPath):
m_FullPath (fullPath), m_Buffer (nullptr), m_IsUpdated (false), m_IsUnreachable (false),
m_FullPath (fullPath), m_IsUpdated (false), m_IsUnreachable (false),
m_SupportedTransports (0), m_Caps (0)
{
m_Addresses = boost::make_shared<Addresses>(); // create empty list
m_Buffer = new uint8_t[MAX_RI_BUFFER_SIZE];
ReadFromFile ();
}
@ -39,7 +40,7 @@ namespace data
m_Addresses = boost::make_shared<Addresses>(); // create empty list
if (len <= MAX_RI_BUFFER_SIZE)
{
m_Buffer = new uint8_t[len];
m_Buffer = new uint8_t[MAX_RI_BUFFER_SIZE];
memcpy (m_Buffer, buf, len);
m_BufferLen = len;
ReadFromBuffer (true);
@ -59,6 +60,12 @@ namespace data
void RouterInfo::Update (const uint8_t * buf, size_t len)
{
if (len > MAX_RI_BUFFER_SIZE)
{
LogPrint (eLogError, "RouterInfo: Buffer is too long ", len);
m_IsUnreachable = true;
return;
}
// verify signature since we have identity already
int l = len - m_RouterIdentity->GetSignatureLen ();
if (m_RouterIdentity->Verify (buf, l, buf + l))
@ -70,15 +77,9 @@ namespace data
m_Caps = 0;
// don't clean up m_Addresses, it will be replaced in ReadFromStream
m_Properties.clear ();
// check if existing buffer long enough
if (m_Buffer && len > m_BufferLen)
{
delete[] m_Buffer;
m_Buffer = nullptr;
}
// copy buffer
if (!m_Buffer)
m_Buffer = new uint8_t[len];
m_Buffer = new uint8_t[MAX_RI_BUFFER_SIZE];
memcpy (m_Buffer, buf, len);
m_BufferLen = len;
// skip identity
@ -114,8 +115,6 @@ namespace data
return false;
}
s.seekg(0, std::ios::beg);
if (m_Buffer) delete[] m_Buffer;
m_Buffer = new uint8_t[m_BufferLen];
s.read((char *)m_Buffer, m_BufferLen);
}
else