nethelp.c File Reference

provides helpful basic network functions More...

#include <pcap.h>
#include <string.h>
#include "nethelp.h"
#include "berkeleyapi.h"
#include "debug.h"

Go to the source code of this file.

Functions
errorcode	resolveIP (char *ip_or_name, ip_t *ip)
	resolves a hostname or IP to a 32bit IP number
errorcode	bindSocket (port_t port_to_bind, sock_t *sd)
	binds a socket
errorcode	tcp_connect (ip_t ip, port_t port, sock_t *sd)
	creates a TCP connection

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Detailed Description

provides helpful basic network functions

Author:

Daniel Ferullo (ferullo@cmu.edu)

Definition in file nethelp.c.

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Function Documentation

errorcode bindSocket (  port_t  port_to_bind, sock_t *  sd )

binds a socket Parameters: port_to_bind  the desired port sd  a pointer to an int to fill in with the socket descriptor for the bound socket, if successful. On error the value is undefined. Returns: SUCCESS, errorcode on failure Definition at line 55 of file nethelp.c. References CHECK_NOT_NULL, DBG_NETWORK, DBG_PORT, DEBUG, ERROR_NULL_ARG_2, and errorcode. Referenced by capture_flooded_synack(), natblaster_connect(), and natblaster_server().

errorcode resolveIP (  char *  ip_or_name, ip_t *  ip )

resolves a hostname or IP to a 32bit IP number Parameters: ip_or_name  the hostname or IP as a string ip  the IP as a 32bit number Definition at line 30 of file nethelp.c. References CHECK_NOT_NULL, ERROR_NULL_ARG_1, ERROR_NULL_ARG_2, and errorcode. Referenced by main().

errorcode tcp_connect (  ip_t  ip, port_t  port, sock_t *  sd )

creates a TCP connection Parameters: ip  the network byte order 32 bit ip address to connect to port  the port to connect to sd  a pointer to a sd to fill in with the connection sd (value undefined on error) If the socket descriptor is greater than zero then the current socket descriptor will be used, otherwise a new one will be created. Returns: SUCCESS, errorcode on failure Definition at line 88 of file nethelp.c. References CHECK_NOT_NULL, DBG_ALL, DEBUG, ERROR_NULL_ARG_3, and errorcode. Referenced by peer_fsm_conn_again(), and peer_fsm_start().

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