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Merge PR #1610: Proto_OpenVPN: Set max allowed ACKs to 8 for P_ACK_V1

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Davide Beatrici 2022-06-14 04:53:56 +02:00 committed by GitHub
commit a14d812dcb
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2 changed files with 7 additions and 2 deletions
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6
src/Cedar/Proto_OpenVPN.c
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@ -1902,6 +1902,10 @@ BUF *OvsBuildPacket(OPENVPN_PACKET *p)
// NumAck // NumAck
num_ack = MIN(p->NumAck, OPENVPN_MAX_NUMACK); num_ack = MIN(p->NumAck, OPENVPN_MAX_NUMACK);
if (p->OpCode != OPENVPN_P_ACK_V1)
{
num_ack = MIN(num_ack, OPENVPN_MAX_NUMACK_NONACK);
}
WriteBufChar(b, (UCHAR)num_ack); WriteBufChar(b, (UCHAR)num_ack);
if (p->NumAck >= 1) if (p->NumAck >= 1)
@ -1982,7 +1986,7 @@ OPENVPN_PACKET *OvsParsePacket(UCHAR *data, UINT size)
ret->NumAck = uc; ret->NumAck = uc;
if (ret->NumAck > 4) if (ret->NumAck > OPENVPN_MAX_NUMACK)
{ {
goto LABEL_ERROR; goto LABEL_ERROR;
} }

3
src/Cedar/Proto_OpenVPN.h
View File

@ -14,7 +14,8 @@
#define OPENVPN_UDP_PORT 1194 // OpenVPN default UDP port number #define OPENVPN_UDP_PORT 1194 // OpenVPN default UDP port number
#define OPENVPN_UDP_PORT_INCLUDE 1195 // OpenVPN default UDP port number (Operating within the client) #define OPENVPN_UDP_PORT_INCLUDE 1195 // OpenVPN default UDP port number (Operating within the client)
#define OPENVPN_MAX_NUMACK 4 // The maximum number of ACKs #define OPENVPN_MAX_NUMACK 8 // The maximum number of ACKs
#define OPENVPN_MAX_NUMACK_NONACK 4 // The maximum number of ACKs in != P_ACK_V1
#define OPENVPN_NUM_CHANNELS 8 // Maximum number of channels during a session #define OPENVPN_NUM_CHANNELS 8 // Maximum number of channels during a session
#define OPENVPN_CONTROL_PACKET_RESEND_INTERVAL 500 // Control packet retransmission interval #define OPENVPN_CONTROL_PACKET_RESEND_INTERVAL 500 // Control packet retransmission interval
#define OPENVPN_CONTROL_PACKET_MAX_DATASIZE 1200 // Maximum data size that can be stored in one control packet #define OPENVPN_CONTROL_PACKET_MAX_DATASIZE 1200 // Maximum data size that can be stored in one control packet