void get_set_of_pandigital_products(int* begin, int* end, std::set<int>& prods) {
int n_digits = end-begin;
int n_max = 5;
int x1, x2, res;
do {
for (int i = 0; i < n_max-1; ++ i) {
x1 = get_int_from_array(begin, begin+i);
x2 = get_int_from_array(begin+i, begin+n_max);
res = get_int_from_array(begin+n_max, begin+n_digits);
if (check_product(x1, x2, res)) {
prods.insert(res);
}
}
} while (std::next_permutation(begin, end));
}
int dispatch_msg(const char* p_msg)
{
log_debug("parsing message: %s", p_msg);
struct json_object* pobj = json_tokener_parse(p_msg);
if((NULL == pobj) || (is_error(pobj)))
{
log_err("error: message does not appear to be a valid json message: %s", p_msg);
return(-1);
}
// param 0 is the function name
const char* fcn;
int rc = get_string_from_array(pobj, 0, &fcn);
if(0 != rc)
{
log_err("error: failed to get function name from message");
return(-1);
}
if(0 == strcmp("pulseRelay", fcn))
{
// ["pulseRelay",1,250]
int num;
rc = get_int_from_array(pobj, 1, &num);
if(0 != rc)
{
log_err("error: pulseRelay: failed to extract param0 relay num");
return(-1);
}
if((num < 0) || (num > 255))
{
log_err("error: pulseRelay: relay num out of range (0-255): [%d]", num);
return(-1);
}
int ms;
rc = get_int_from_array(pobj, 2, &ms);
if(0 != rc)
{
log_debug("pulseRelay: no cycle ms specified, defaulting to 250ms");
ms = 250;
}
if((ms < 0) || (ms > 255))
{
log_err("error: pulseRelay: pulse duration ms out of range (0-255): [%dms]", ms);
return(-1);
}
pulseRelay((uint8_t)num, (uint8_t)ms);
}
else if(0 == strcmp("writeOutputRegister", fcn))
{
// ["writeOutputRegister",1,255]
int val;
rc = get_int_from_array(pobj, 1, &val);
if(0 != rc)
{
log_err("error: writeOutputRegister: failed to extract param0 'value'");
return(-1);
}
if((val < 0) || (val > 255))
{
log_err("error: writeOutputRegister: register value out of range (0-255): [%d]", val);
return(-1);
}
int mask;
rc = get_int_from_array(pobj, 2, &mask);
if(0 != rc)
{
log_err("error: writeOutputRegister: failed to extract param1 'mask'");
return(-1);
}
if((mask < 0) || (mask > 255))
{
log_err("error: writeOutputRegister: register mask out of range (0-255): [%d]", mask);
return(-1);
}
writeOutputRegister((uint8_t)val, (uint8_t)mask);
}
else if(0 == strcmp("dialModem", fcn))
{
// ["dialModem","ATD3,4,4;"]
const char* val;
rc = get_string_from_array(pobj, 1, &val);
if(0 != rc)
{
log_err("error: dialModem: failed to extract param0 dial string");
return(-1);
}
dialModem(val);
}
else if(0 == strcmp("hello", fcn))
{
// ["hello","<device id>"]
const char* str;
rc = get_string_from_array(pobj, 1, &str);
if(0 != rc)
{
log_err("error: hello: failed to extract param0 device id");
return(-1);
}
processHello(str);
}
else if(0 == strcmp("requestIpv4Addresses", fcn))
{
requestIpv4Addresses();
}
else
{
log_err("error: unknown function: [%s]", fcn);
}
return(0);
}