/* This function prints the message. */
static int
print_message(const int sk, struct msghdr *msg, size_t msg_len) {
struct cmsghdr *scmsg;
sctp_cmsg_data_t *data;
int i;
if (!(MSG_NOTIFICATION & msg->msg_flags)) {
int index = 0;
DEBUG_PRINT(DEBUG_MIN, "Data %zu bytes.", msg_len);
DEBUG_PRINT(DEBUG_MAX, " First %zu bytes: ",
(msg_len < BODYSIZE)?msg_len:BODYSIZE);
/* Make sure that everything is printable and that we
* are NUL terminated...
*/
while ( msg_len > 0 ) {
char *text, tmptext[BODYSIZE];
int len;
memset(tmptext, 0x0, BODYSIZE);
text = msg->msg_iov[index].iov_base;
len = msg->msg_iov[index].iov_len;
if (msg_len == 1 && text[0] == 0) {
DEBUG_PRINT(DEBUG_MIN, "<empty> text[0]=%d",
text[0]);
break;
}
if ( len > msg_len ) {
/* text[(len = msg_len) - 1] = '\0'; */
text[(len = msg_len)] = '\0';
}
if ( (msg_len -= len) > 0 ) { index++; }
for (i = 0; i < len - 1; ++i) {
if (!isprint(text[i])) text[i] = '.';
}
strncpy(tmptext, text, BODYSIZE);
tmptext[BODYSIZE-1] = '\0';
DEBUG_PRINT(DEBUG_MAX, "%s", tmptext);
}
DEBUG_PRINT(DEBUG_MIN, "\n");
fflush(stdout);
} else { /* if(we have notification) */
struct sctp_assoc_change *sac;
struct sctp_send_failed *ssf;
struct sctp_paddr_change *spc;
struct sctp_remote_error *sre;
union sctp_notification *snp;
char addrbuf[INET6_ADDRSTRLEN];
const char *ap;
struct sockaddr_in *sin;
struct sockaddr_in6 *sin6;
int index = 0;
snp = (union sctp_notification *)msg->msg_iov[index].iov_base;
DEBUG_PRINT(DEBUG_MIN, "Notification:");
switch (snp->sn_header.sn_type) {
case SCTP_ASSOC_CHANGE:
sac = &snp->sn_assoc_change;
DEBUG_PRINT(DEBUG_MIN,
" SCTP_ASSOC_CHANGE(%s)\n",
sac_state_tbl[sac->sac_state]);
DEBUG_PRINT(DEBUG_MAX,
"\t\t(assoc_change: state=%hu, "
"error=%hu, instr=%hu "
"outstr=%hu)\n",
sac->sac_state, sac->sac_error,
sac->sac_inbound_streams,
sac->sac_outbound_streams);
break;
case SCTP_PEER_ADDR_CHANGE:
spc = &snp->sn_paddr_change;
DEBUG_PRINT(DEBUG_MIN,
" SCTP_PEER_ADDR_CHANGE\n");
if (spc->spc_aaddr.ss_family == AF_INET) {
sin = (struct sockaddr_in *)
&spc->spc_aaddr;
ap = inet_ntop(AF_INET, &sin->sin_addr,
addrbuf,
INET6_ADDRSTRLEN);
} else {
sin6 = (struct sockaddr_in6 *)
&spc->spc_aaddr;
ap = inet_ntop(AF_INET6,
&sin6->sin6_addr,
addrbuf,
INET6_ADDRSTRLEN);
}
DEBUG_PRINT(DEBUG_MAX,
"\t\t(peer_addr_change: %s "
"state=%d, error=%d)\n",
ap, spc->spc_state,
spc->spc_error);
break;
case SCTP_SEND_FAILED:
ssf = &snp->sn_send_failed;
DEBUG_PRINT(DEBUG_MIN,
" SCTP_SEND_FAILED\n");
DEBUG_PRINT(DEBUG_MAX,
"\t\t(sendfailed: len=%hu "
"err=%d)\n",
ssf->ssf_length, ssf->ssf_error);
break;
case SCTP_REMOTE_ERROR:
sre = &snp->sn_remote_error;
DEBUG_PRINT(DEBUG_MIN,
" SCTP_REMOTE_ERROR\n");
DEBUG_PRINT(DEBUG_MAX,
"\t\t(remote_error: err=%hu)\n",
ntohs(sre->sre_error));
break;
case SCTP_SHUTDOWN_EVENT:
DEBUG_PRINT(DEBUG_MIN,
" SCTP_SHUTDOWN_EVENT\n");
break;
default:
DEBUG_PRINT(DEBUG_MIN,
" Unknown type: %hu\n",
snp->sn_header.sn_type);
break;
}
fflush(stdout);
return 1;
} /* notification received */
for (scmsg = CMSG_FIRSTHDR(msg);
scmsg != NULL;
scmsg = CMSG_NXTHDR(msg, scmsg)) {
data = (sctp_cmsg_data_t *)CMSG_DATA(scmsg);
if (debug_level) print_cmsg(scmsg->cmsg_type, data);
}
fflush(stdout);
return 0;
} /* print_message() */
void pipehandler(int s) {
print_cmsg(CL_COM);
exit(CL_COM);
}
