int
display_status( FILE * out, struct CONN * conn, enum STATUS status )
/* display a "status banner" */
{
char *client_name;
char *server_name;
char *s_time;
char *status_string;
if ( flags.notstatus ) {
/* FIXME: sucks! and what if out will be a file? */
return 0;
}
client_name=(char *)lookup(conn->client.ip);
s_time = (char *)S_calloc( 128, 1 );
if( time_ascii( s_time ) )
color( c_TIME, out,"%-16s ",s_time ); /* FIXME: check */
color( c_NUMBERING, out,"%-6d ",conn->num );
S_free ( s_time );
status_string = status2str( status );
color( _STATUS_COLOR(status),
out,"%-14s",status_string );
S_free( status_string );
color( c_CLIENTNAME_STATUS, out, " %s:%s ",
client_name,
getportname(conn->client.port) );
color( _STATUS_COLOR(status), out,"> " );
server_name=(char *)lookup(conn->server.ip);
color( c_SERVERNAME_STATUS, out,"%s",
server_name );
fprintf( out,":" );
color( c_SERVICE, out,"%s",
getportname(conn->server.port) );
fprintf( out, "\n" );
fflush( out );
}
int display_header( FILE * out )
/* displays a banner for the header of the packet sniffed */
{ /* FIXME: sucks */
char * source = NULL;
char * dest = NULL;
char * s_time = (char *)S_calloc(128,1);
source=(char *)lookup(ippacket->ip_src);
debug("[display_header]: source(%x)",source);
debug("[display_header]: source=%s",source);
if( time_ascii(s_time) )
color ( c_TIME, out,"%-16s ",s_time );
color( c_CLIENTNAME_HEADER, out,"%s",source );
fprintf(out,":");
color( c_SERVICE_HEADER, out,"%s ",getportname(tcppacket->source) );
if(tcppacket->urg)
color(c_FLAGS, out,"U");
if(tcppacket->ack)
color(c_FLAGS, out,"A");
if(tcppacket->psh)
color(c_FLAGS, out,"P");
if(tcppacket->rst)
color(c_FLAGS, out,"R");
if(tcppacket->syn)
color(c_FLAGS, out,"S");
if(tcppacket->fin)
color(c_FLAGS, out,"F");
dest = (char *)lookup( ippacket->ip_dst );
color(c_DIRECTION, out," > ");
color(c_SERVERNAME_HEADER, out,"%s",dest);
fprintf(out,":");
color(c_SERVICE_HEADER, out,"%s",getportname(tcppacket->dest));
fprintf(out," (%i)\n",payload_len);
fflush(out);
}
int
interpret_udp(int flags, struct udphdr *udp, int iplen, int fraglen)
{
char *data;
int udplen;
int sunrpc;
char *pname;
char buff [32];
if (fraglen < sizeof (struct udphdr))
return (fraglen); /* incomplete header */
data = (char *)udp + sizeof (struct udphdr);
udplen = ntohs((ushort_t)udp->uh_ulen) - sizeof (struct udphdr);
fraglen -= sizeof (struct udphdr);
if (fraglen > udplen)
fraglen = udplen;
if (flags & F_SUM) {
(void) sprintf(get_sum_line(),
"UDP D=%d S=%d LEN=%d",
ntohs(udp->uh_dport),
ntohs(udp->uh_sport),
ntohs((ushort_t)udp->uh_ulen));
}
sunrpc = !reservedport(IPPROTO_UDP, ntohs(udp->uh_dport)) &&
!reservedport(IPPROTO_UDP, ntohs(udp->uh_sport)) &&
valid_rpc(data, udplen);
if (flags & F_DTAIL) {
show_header("UDP: ", "UDP Header", udplen);
show_space();
(void) sprintf(get_line((char *)(uintptr_t)udp->uh_sport -
dlc_header, 1), "Source port = %d", ntohs(udp->uh_sport));
if (sunrpc) {
pname = "(Sun RPC)";
} else {
pname = getportname(IPPROTO_UDP, ntohs(udp->uh_dport));
if (pname == NULL) {
pname = "";
} else {
(void) sprintf(buff, "(%s)", pname);
pname = buff;
}
}
(void) sprintf(get_line((char *)(uintptr_t)udp->uh_dport -
dlc_header, 1), "Destination port = %d %s",
ntohs(udp->uh_dport), pname);
(void) sprintf(get_line((char *)(uintptr_t)udp->uh_ulen -
dlc_header, 1), "Length = %d %s",
ntohs((ushort_t)udp->uh_ulen),
udplen > fraglen ?
"(Not all data contained in this fragment)"
: "");
(void) sprintf(get_line((char *)(uintptr_t)udp->uh_sum -
dlc_header, 1), "Checksum = %04X %s",
ntohs(udp->uh_sum),
udp->uh_sum == 0 ? "(no checksum)" : "");
show_space();
}
/* go to the next protocol layer */
if (!interpret_reserved(flags, IPPROTO_UDP,
ntohs(udp->uh_sport),
ntohs(udp->uh_dport),
data, fraglen)) {
if (fraglen > 0 && sunrpc)
interpret_rpc(flags, data, fraglen, IPPROTO_UDP);
}
return (fraglen);
}
