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libi2pd_client: fix memory safety issues

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jpk68
2026-07-29 19:11:34 -04:00
parent 6d47cca978
commit d3ea3ca10c
2 changed files with 50 additions and 19 deletions
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libi2pd_client/SAM.cpp
+5 -1
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@@ -520,6 +520,7 @@ namespace client
#else
size_t l2 = snprintf (m_Buffer, SAM_SOCKET_BUFFER_SIZE, SAM_SESSION_CREATE_REPLY_OK, priv.c_str ());
#endif
if (l2 >= SAM_SOCKET_BUFFER_SIZE) l2 = SAM_SOCKET_BUFFER_SIZE - 1;
SendMessageReply ({m_Buffer, l2}, false);
}
}
@@ -992,6 +993,7 @@ namespace client
#else
size_t l = snprintf (m_Buffer, SAM_SOCKET_BUFFER_SIZE, SAM_NAMING_REPLY, name.c_str (), base64.c_str ());
#endif
if (l >= SAM_SOCKET_BUFFER_SIZE) l = SAM_SOCKET_BUFFER_SIZE - 1;
SendMessageReply ({m_Buffer, l}, false);
}
@@ -1298,7 +1300,9 @@ namespace client
(unsigned)toPort
);
#endif
if (len < SAM_STREAM_BUFFER_SIZE - l)
if (l >= SAM_STREAM_BUFFER_SIZE)
LogPrint (eLogWarning, "SAM: Datagram header exceeds buffer, dropped");
else if (len < SAM_STREAM_BUFFER_SIZE - l)
{
memcpy (m_StreamBuffer + l, buf, len);
WriteI2PData(len + l);