/**
* Initializes this module:
* - Opens the product-queue named by `getQueuePath()`;
* - Redirects the standard input stream to the given input file;
* - Initializes the structure `prod`; and
* - Initializes the PRNG module associated with the function `random()`.
*
* @retval true if and only if successful.
*/
static bool pti_init(void)
{
int success = false;
const char* const pqfname = getQueuePath();
int status = pq_open(pqfname, PQ_DEFAULT, &pq);
if (PQ_CORRUPT == status) {
log_add("The product-queue \"%s\" is corrupt\n", pqfname);
}
else if (status) {
log_errno_q(status, "Couldn't open product-queue \"%s\"", pqfname);
}
else {
prod.data = malloc(max_prod_size);
if (prod.data == NULL) {
log_syserr_q("Couldn't allocate buffer for data-product");
}
else {
(void)strncpy(myname, ghostname(), sizeof(myname));
myname[sizeof(myname)-1] = 0;
prod.info.origin = myname;
prod.info.feedtype = feedtype;
srandom(1); // for `random()`
seed[2] = random(); seed[1] = random(); seed[0] = random();
(void)seed48(seed); // for `mrand48()`
success = true;
}
}
return success;
}
/*ARGSUSED0*/
int cfGetProduct(
pq_match mt,
const prod_class_t* clss,
prod_info* info,
void** data,
void** encProd,
size_t* len)
{
int status;
if (currState != READY) {
log_error_q("Configuration file not ready");
status = ENOENT;
}
else {
ensure_delay();
*info = prodInfo;
status = set_timestamp(&info->arrival);
if (status != 0) {
log_errno_q(status, "Couldn't set product arrival time");
}
else {
XDR xdr;
info->seqno = ++prodCount;
nextSignature(&info->signature);
prod.info = *info;
*data = prodData;
*len = prodXdrLen;
*encProd = prodXdrBuf;
xdrmem_create(&xdr, *encProd, *len, XDR_ENCODE);
if(xdr_product(&xdr, &prod))
{
status = ENOERR;
}
else {
log_error_q("Couldn't XDR_ENCODE product");
status = EIO;
}
xdr_destroy(&xdr);
}
}
return status;
}