int mrange_parse(char* text) {
char tmp[300];
char* ptr, *sptr;
Range* mr_ptr = NULL;
assert(text);
memset(tmp, 0, 300);
if (strlen(text) > 299) {
return 1;
}
// strcpy(tmp, text);
strlcpy(tmp, text, sizeof(tmp));
// tokenize based on a "," character.
// An example of the string : 2003:3000,4000:5000
ptr = strtok(tmp, ",");
while (ptr != NULL) { // tokens found
if ((sptr = strchr(ptr, ':')) != NULL) { // also found a ":" character,
// with sptr pointing to its location
*sptr++ = 0;
if (strchr(sptr, ':') != NULL) { // should not find any more range
return 1;
}
} else {
sptr = ptr;
}
if ((mr_ptr = malloc(sizeof(Range))) == NULL) {
log_println(0, "FATAL: cannot allocate memory");
return 1;
}
if (*ptr == 0) {
ptr = "1";
}
// Check if the input string is within range and store
// result as "minimum"
// For ex: Is 2003 in a string like "2003:4000" within integer range ?
// If not, free the memory allocated to store the range and return
if (check_rint(ptr, &mr_ptr->min, 1, MAX_TCP_PORT)) {
free(mr_ptr);
return 1;
}
if (*sptr == 0) {
sptr = MAX_TCP_PORT_STR;
}
// now validate if "maximum" is within range and store
// result as "maximum"
if (check_rint(sptr, &mr_ptr->max, 1, MAX_TCP_PORT)) {
free(mr_ptr);
return 1; // if invalid range, free allocated memory and return
}
mr_ptr->next = mrange_root;
mrange_root = mr_ptr; // ready to point to next member
ptr = strtok(NULL, ",");
}
free(mr_ptr);
return 0;
}
char*
mrange_next(char* port, size_t port_strlen) {
int val;
Range* ptr;
assert(port);
if (check_rint(port, &val, 0, MAX_TCP_PORT)) { // check if valid
log_println(0, "WARNING: invalid port number");
snprintf(port, port_strlen, RESERVED_PORT);
return port;
}
val++;
while (val <= MAX_TCP_PORT) { // Maximum port number not exceeded
ptr = mrange_root;
while (ptr != NULL) { // While there is some data
if ((val >= ptr->min) && (val <= ptr->max)) { // check range
// and return port if valid
snprintf(port, port_strlen, "%d", val);
return port;
}
ptr = ptr->next;
}
val++;
}
snprintf(port, port_strlen, RESERVED_PORT);
return port;
}
static void
sse2_test (void)
{
check_round ();
check_rint ();
check_floor ();
check_ceil ();
check_trunc ();
}
