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src/Mayaqua/TcpIp: remove dead code, unused variables and fuctions

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found by coverity, cppcheck

[src/Mayaqua/TcpIp.c:578]: (style) Variable 'tcp_size' is assigned a value that is never used.
[src/Mayaqua/TcpIp.c:1034]: (style) Variable 'has_vlan_tag' is assigned a value that is never used.
[src/Mayaqua/TcpIp.c:1996]: (style) Variable 'tcp_header_size' is assigned a value that is never used.
[src/Mayaqua/TcpIp.c:127]: (style) The function 'IcmpEchoSend' is never used.
[src/Mayaqua/TcpIp.c:2194]: (style) The function 'ParsePacketL2' is never used.
[src/Mayaqua/TcpIp.c:251]: (style) The function 'IcmpEchoSendBySocket' is never used.
This commit is contained in:
Ilya Shipitsin 2018-08-18 00:27:17 +05:00
parent b029676b67
commit 8ca0ce3efc
2 changed files with 0 additions and 171 deletions
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168
src/Mayaqua/TcpIp.c
View File

@ -122,30 +122,6 @@
#include <errno.h> #include <errno.h>
#include <Mayaqua/Mayaqua.h> #include <Mayaqua/Mayaqua.h>
// Send an ICMP Echo
ICMP_RESULT *IcmpEchoSend(IP *dest_ip, UCHAR ttl, UCHAR *data, UINT size, UINT timeout)
{
// Validate arguments
if (dest_ip == NULL || IsIP4(dest_ip) == false || (size != 0 && data == NULL))
{
return NULL;
}
if (ttl == 0)
{
ttl = 127;
}
if (IsIcmpApiSupported())
{
return IcmpApiEchoSend(dest_ip, ttl, data, size, timeout);
}
else
{
return IcmpEchoSendBySocket(dest_ip, ttl, data, size, timeout);
}
}
// Release the memory for the ICMP response // Release the memory for the ICMP response
void IcmpFreeResult(ICMP_RESULT *r) void IcmpFreeResult(ICMP_RESULT *r)
{ {
@ -271,138 +247,6 @@ ICMP_RESULT *IcmpParseResult(IP *dest_ip, USHORT src_id, USHORT src_seqno, UCHAR
return ret; return ret;
} }
// Send the ICMP Echo (by a socket)
ICMP_RESULT *IcmpEchoSendBySocket(IP *dest_ip, UCHAR ttl, UCHAR *data, UINT size, UINT timeout)
{
SOCK *s;
ICMP_RESULT *ret = NULL;
USHORT id;
USHORT seq;
UINT64 sent_tick;
UINT64 recv_tick;
// Validate arguments
if (dest_ip == NULL || IsIP4(dest_ip) == false || (size != 0 && data == NULL))
{
return NULL;
}
if (ttl == 0)
{
ttl = 127;
}
s = NewUDP4(MAKE_SPECIAL_PORT(IP_PROTO_ICMPV4), NULL);
if (s != NULL)
{
// Construction of the ICMP packet
UCHAR *send_buffer;
UINT send_buffer_size = sizeof(ICMP_HEADER) + sizeof(ICMP_ECHO) + size;
ICMP_HEADER *send_icmp_header;
ICMP_ECHO *send_icmp_echo;
UINT i;
id = Rand16();
if (id == 0)
{
id = 1;
}
seq = Rand16();
if (seq == 0)
{
seq = 1;
}
send_buffer = ZeroMalloc(send_buffer_size);
send_icmp_header = (ICMP_HEADER *)send_buffer;
send_icmp_header->Type = ICMP_TYPE_ECHO_REQUEST;
send_icmp_echo = (ICMP_ECHO *)(send_buffer + sizeof(ICMP_HEADER));
send_icmp_echo->Identifier = Endian16(id);
send_icmp_echo->SeqNo = Endian16(seq);
Copy(send_buffer + sizeof(ICMP_HEADER) + sizeof(ICMP_ECHO), data, size);
send_icmp_header->Checksum = IpChecksum(send_buffer, send_buffer_size);
// Send an ICMP
SetTtl(s, ttl);
sent_tick = TickHighres64();
i = SendTo(s, dest_ip, MAKE_SPECIAL_PORT(IP_PROTO_ICMPV4), send_buffer, send_buffer_size);
if (i != 0 && i != INFINITE)
{
// ICMP response received
INTERRUPT_MANAGER *interrupt = NewInterruptManager();
UINT64 giveup_time = Tick64() + (UINT64)timeout;
UINT recv_buffer_size = (sizeof(IPV4_HEADER) + sizeof(ICMP_HEADER) + sizeof(ICMP_ECHO) + size + 64) * 2;
UCHAR *recv_buffer = Malloc(recv_buffer_size);
AddInterrupt(interrupt, giveup_time);
while (true)
{
UINT interval = GetNextIntervalForInterrupt(interrupt);
IP src_ip;
UINT src_port;
SOCKSET set;
InitSockSet(&set);
AddSockSet(&set, s);
Select(&set, interval, NULL, NULL);
while (true)
{
Zero(recv_buffer, recv_buffer_size);
i = RecvFrom(s, &src_ip, &src_port, recv_buffer, recv_buffer_size);
recv_tick = TickHighres64();
if (i != 0 && i != SOCK_LATER)
{
ret = IcmpParseResult(dest_ip, id, seq, recv_buffer, i);
if (ret != NULL)
{
break;
}
}
else
{
break;
}
}
if (interval == 0)
{
break;
}
if (ret != NULL)
{
break;
}
}
FreeInterruptManager(interrupt);
Free(recv_buffer);
if (ret == NULL)
{
ret = ZeroMalloc(sizeof(ICMP_RESULT));
ret->Timeout = true;
}
}
Free(send_buffer);
ReleaseSock(s);
}
return ret;
}
// Get whether the packet is a DHCP packet associated with the specified MAC address // Get whether the packet is a DHCP packet associated with the specified MAC address
bool IsDhcpPacketForSpecificMac(UCHAR *data, UINT size, UCHAR *mac_address) bool IsDhcpPacketForSpecificMac(UCHAR *data, UINT size, UCHAR *mac_address)
{ {
@ -575,7 +419,6 @@ UINT GetIpHeaderSize(UCHAR *src, UINT src_size)
{ {
UCHAR ip_ver; UCHAR ip_ver;
TCP_HEADER *tcp = NULL; TCP_HEADER *tcp = NULL;
UINT tcp_size = 0;
IPV4_HEADER *ip = NULL; IPV4_HEADER *ip = NULL;
IPV6_HEADER *ip6 = NULL; IPV6_HEADER *ip6 = NULL;
// Validate arguments // Validate arguments
@ -1031,7 +874,6 @@ void VLanInsertTag(void **packet_data, UINT *packet_size, UINT vlan_id, UINT vla
// Remove the VLAN tag from the packet // Remove the VLAN tag from the packet
bool VLanRemoveTag(void **packet_data, UINT *packet_size, UINT vlan_id, UINT vlan_tpid) bool VLanRemoveTag(void **packet_data, UINT *packet_size, UINT vlan_id, UINT vlan_tpid)
{ {
bool has_vlan_tag = false;
UCHAR *src_data; UCHAR *src_data;
UINT src_size; UINT src_size;
USHORT vlan_tpid_ushort; USHORT vlan_tpid_ushort;
@ -1993,7 +1835,6 @@ void CorrectChecksum(PKT *p)
if (tcp != NULL) if (tcp != NULL)
{ {
UINT tcp_header_size = TCP_GET_HEADER_SIZE(tcp) * 4;
USHORT tcp_offloading_checksum1 = CalcChecksumForIPv6(&v6->SrcAddress, &v6->DestAddress, IP_PROTO_TCP, NULL, 0, v6info->PayloadSize); USHORT tcp_offloading_checksum1 = CalcChecksumForIPv6(&v6->SrcAddress, &v6->DestAddress, IP_PROTO_TCP, NULL, 0, v6info->PayloadSize);
USHORT tcp_offloading_checksum2 = ~tcp_offloading_checksum1; USHORT tcp_offloading_checksum2 = ~tcp_offloading_checksum1;
@ -2191,10 +2032,6 @@ HTTPLOG *ParseHttpAccessLog(PKT *pkt)
// Layer-2 parsing // Layer-2 parsing
bool ParsePacketL2(PKT *p, UCHAR *buf, UINT size)
{
return ParsePacketL2Ex(p, buf, size, false);
}
bool ParsePacketL2Ex(PKT *p, UCHAR *buf, UINT size, bool no_l3) bool ParsePacketL2Ex(PKT *p, UCHAR *buf, UINT size, bool no_l3)
{ {
UINT i; UINT i;
@ -4062,11 +3899,6 @@ void DhcpParseClasslessRouteData(DHCP_CLASSLESS_ROUTE_TABLE *t, void *data, UINT
} }
data_len = (subnet_mask_len + 7) / 8; data_len = (subnet_mask_len + 7) / 8;
if (data_len > 4)
{
// Invalid data
break;
}
Zero(tmp, sizeof(tmp)); Zero(tmp, sizeof(tmp));
if (ReadBuf(b, tmp, data_len) != data_len) if (ReadBuf(b, tmp, data_len) != data_len)

3
src/Mayaqua/TcpIp.h
View File

@ -860,7 +860,6 @@ void FreePacketUDPv4(PKT *p);
void FreePacketTCPv4(PKT *p); void FreePacketTCPv4(PKT *p);
void FreePacketICMPv4(PKT *p); void FreePacketICMPv4(PKT *p);
void FreePacketDHCPv4(PKT *p); void FreePacketDHCPv4(PKT *p);
bool ParsePacketL2(PKT *p, UCHAR *buf, UINT size);
bool ParsePacketL2Ex(PKT *p, UCHAR *buf, UINT size, bool no_l3); bool ParsePacketL2Ex(PKT *p, UCHAR *buf, UINT size, bool no_l3);
bool ParsePacketARPv4(PKT *p, UCHAR *buf, UINT size); bool ParsePacketARPv4(PKT *p, UCHAR *buf, UINT size);
bool ParsePacketIPv4(PKT *p, UCHAR *buf, UINT size); bool ParsePacketIPv4(PKT *p, UCHAR *buf, UINT size);
@ -909,8 +908,6 @@ UCHAR GetNextByte(BUF *b);
bool IsDhcpPacketForSpecificMac(UCHAR *data, UINT size, UCHAR *mac_address); bool IsDhcpPacketForSpecificMac(UCHAR *data, UINT size, UCHAR *mac_address);
ICMP_RESULT *IcmpEchoSendBySocket(IP *dest_ip, UCHAR ttl, UCHAR *data, UINT size, UINT timeout);
ICMP_RESULT *IcmpEchoSend(IP *dest_ip, UCHAR ttl, UCHAR *data, UINT size, UINT timeout);
ICMP_RESULT *IcmpParseResult(IP *dest_ip, USHORT src_id, USHORT src_seqno, UCHAR *recv_buffer, UINT recv_buffer_size); ICMP_RESULT *IcmpParseResult(IP *dest_ip, USHORT src_id, USHORT src_seqno, UCHAR *recv_buffer, UINT recv_buffer_size);
void IcmpFreeResult(ICMP_RESULT *r); void IcmpFreeResult(ICMP_RESULT *r);