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Add NCP::max_frame_size tuning option

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This helps prevent excessive allocations based on message lengths
taken from NCP headers.
This commit is contained in:
Jon Siwek 2018-05-22 18:27:52 -05:00
parent e35da5f592
commit 58864c358c
7 changed files with 487 additions and 15 deletions
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11
src/analyzer/protocol/ncp/NCP.h
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@ -54,8 +54,9 @@ public:
explicit FrameBuffer(int header_length);
virtual ~FrameBuffer();
// Returns true if a frame is ready
bool Deliver(int& len, const u_char* &data);
// Returns -1 if frame is not ready, 0 if it else, and 1 if
// the frame would require too large of a buffer allocation.
int Deliver(int& len, const u_char* &data);
void Reset();
@ -68,9 +69,9 @@ protected:
int hdr_len;
u_char* msg_buf;
int msg_len;
int buf_n; // number of bytes in msg_buf
int buf_len; // size off msg_buf
uint64 msg_len;
size_t buf_n; // number of bytes in msg_buf
size_t buf_len; // size off msg_buf
};
#define NCP_TCPIP_HEADER_LENGTH 8