void send_tcp(int senderid,int sockfd,int datalen,u_char *data,int flags)
{
sendto_tcp(senderid,sockfd,datalen,data,flags,NULL,0);
return;
}
void sendmsg_call_handler(unsigned long long uniqueSockID, int threads,
unsigned char *buf, ssize_t len) {
int index;
int datalen;
int flags;
int msg_flags;
int symbol;
int controlFlag = 0;
u_char *data;
socklen_t addrlen;
void *msg_control;
int msg_controlLength;
struct sockaddr_in *addr;
u_char *pt;
PRINT_DEBUG("");
pt = buf;
flags = *(int *) pt;
pt += sizeof(int);
symbol = *(int *) pt;
pt += sizeof(int);
if (symbol) {
addrlen = *(u_int *) pt;
pt += sizeof(u_int);
addr = (struct sockaddr_in *) malloc(addrlen);
memcpy(addr, pt, addrlen);
pt += addrlen;
PRINT_DEBUG("addr=%s/%d", inet_ntoa(addr->sin_addr), addr->sin_port);
}
msg_flags = *(int *) pt;
pt += sizeof(int);
controlFlag = *(int *) pt;
pt += sizeof(int);
if (controlFlag) {
msg_controlLength = *(u_int *) pt;
pt += sizeof(u_int);
msg_control = malloc(msg_controlLength);
memcpy(msg_control, pt, msg_controlLength);
pt += msg_controlLength;
}
datalen = *(u_int *) pt;
pt += sizeof(u_int);
if (datalen <= 0) {
PRINT_DEBUG("DATA Field is empty!!");
nack_send(uniqueSockID, sendmsg_call);
return;
}
data = (u_char *) malloc(datalen);
PRINT_DEBUG("");
memcpy(data, pt, datalen);
pt += datalen;
if (pt - buf != len) {
PRINT_DEBUG("READING ERROR! CRASH, diff=%d len=%d", pt - buf, len);
nack_send(uniqueSockID, sendmsg_call);
return;
}
PRINT_DEBUG("");
index = findjinniSocket(uniqueSockID);
PRINT_DEBUG("");
if (index == -1) {
PRINT_DEBUG(
"CRASH !!! socket descriptor not found into jinni sockets SO pipe descriptor to reply is notfound too ");
nack_send(uniqueSockID, sendmsg_call);
return;
}
PRINT_DEBUG("");
/**
* In case of connected sockets
*/
if (jinniSockets[index].connection_status > 0) {
if (jinniSockets[index].type == SOCK_DGRAM)
send_udp(uniqueSockID, sendmsg_call, datalen, data, flags);
else if (jinniSockets[index].type == SOCK_STREAM)
send_tcp(uniqueSockID, sendmsg_call, datalen, data, flags);
else if ((jinniSockets[index].type == SOCK_RAW)
&& (jinniSockets[index].protocol == IPPROTO_ICMP)) {
} else {
PRINT_DEBUG("unknown socket type has been read !!!");
nack_send(uniqueSockID, sendmsg_call);
}
} else {
/**
* In case of NON-connected sockets, WE USE THE ADDRESS GIVEN BY the APPlication
* Process. Check if an address has been passed or not is required
*/
if (symbol) { // check that the passed address is not NULL
if (jinniSockets[index].type == SOCK_DGRAM)
sendto_udp(uniqueSockID, sendmsg_call, datalen, data, flags,
addr, addrlen);
else if (jinniSockets[index].type == SOCK_STREAM)
sendto_tcp(uniqueSockID, sendmsg_call, datalen, data, flags,
addr, addrlen);
else if ((jinniSockets[index].type == SOCK_RAW)
&& (jinniSockets[index].protocol == IPPROTO_ICMP)) {
sendto_icmp(uniqueSockID, sendmsg_call, datalen, data, flags,
addr, addrlen);
} else {
PRINT_DEBUG("unknown target address !!!");
nack_send(uniqueSockID, sendmsg_call);
}
}
else {
PRINT_DEBUG("unknown target address !!!");
nack_send(uniqueSockID, sendmsg_call);
}
}
PRINT_DEBUG();
return;
}
void sendto_call_handler(unsigned long long uniqueSockID, int threads,
unsigned char *buf, ssize_t len) {
int index;
int datalen;
int flags;
u_char *data;
socklen_t addrlen;
struct sockaddr_in *addr;
u_char *pt;
PRINT_DEBUG("");
pt = buf;
datalen = *(int *) pt;
pt += sizeof(int);
PRINT_DEBUG("passed data len = %d", datalen);
if (datalen <= 0) {
PRINT_DEBUG("DATA Field is empty!!");
nack_send(uniqueSockID, sendto_call);
return;
}
data = (u_char *) malloc(datalen);
PRINT_DEBUG("");
memcpy(data, pt, datalen);
pt += datalen;
PRINT_DEBUG("");
flags = *(int *) pt;
pt += sizeof(int);
PRINT_DEBUG("");
addrlen = *(socklen_t *) pt;
pt += sizeof(socklen_t);
PRINT_DEBUG("");
addr = (struct sockaddr_in *) malloc(addrlen);
memcpy(addr, pt, addrlen);
pt += addrlen;
PRINT_DEBUG("");
if (pt - buf != len) {
PRINT_DEBUG("READING ERROR! CRASH, diff=%d len=%d", pt - buf, len);
nack_send(uniqueSockID, sendto_call);
return;
}
index = findjinniSocket(uniqueSockID);
if (index == -1) {
PRINT_DEBUG(
"CRASH !!! socket descriptor not found into jinni sockets SO pipe descriptor to reply is notfound too ");
nack_send(uniqueSockID, sendto_call);
return;
}
PRINT_DEBUG("");
/**
*
* In case a connected socket has been called by mistake using sendto
* (IGNORE THE ADDRESSES AND USET THE ADDRESS THE SOCKET IS CONNECTED TO IT)
*/
if (jinniSockets[index].connection_status > 0) {
if (jinniSockets[index].type == SOCK_DGRAM)
send_udp(uniqueSockID, sendto_call, datalen, data, flags);
else if (jinniSockets[index].type == SOCK_STREAM)
send_tcp(uniqueSockID, sendto_call, datalen, data, flags);
else if (jinniSockets[index].type == SOCK_RAW) {
} else {
PRINT_DEBUG("unknown socket type has been read !!!");
nack_send(uniqueSockID, sendto_call);
}
} else {
/**
* The default case , the socket is not connected socket
*/
if (jinniSockets[index].type == SOCK_DGRAM)
sendto_udp(uniqueSockID, sendto_call, datalen, data, flags, addr,
addrlen);
else if (jinniSockets[index].type == SOCK_STREAM)
sendto_tcp(uniqueSockID, sendto_call, datalen, data, flags, addr,
addrlen);
else if (jinniSockets[index].type == SOCK_RAW) {
} else {
PRINT_DEBUG("unknown socket type has been read !!!");
nack_send(uniqueSockID, sendto_call);
}
}
PRINT_DEBUG();
return;
} //end of sendto_call_handler()
