1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause 3 * 4 * Copyright (c) 2025 ConnectWise 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer 12 * in this position and unchanged. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 18 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 19 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 21 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 22 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 #include <ctype.h> 30 #include <stdlib.h> 31 #include <libxo/xo.h> 32 33 #include "sockstat.h" 34 35 int *ports; 36 37 int 38 parse_ports(const char *portspec) 39 { 40 const char *p; 41 42 if (ports == NULL) 43 if ((ports = calloc(65536 / INT_BIT, sizeof(int))) == NULL) 44 xo_err(1, "calloc()"); 45 p = portspec; 46 while (*p != '\0') { 47 long port, end; 48 char *endptr = NULL; 49 50 errno = 0; 51 port = strtol(p, &endptr, 10); 52 if (errno) 53 return (errno); 54 if (port < 0 || port > 65535) 55 return (ERANGE); 56 SET_PORT(port); 57 switch (*endptr) { 58 case '-': 59 p = endptr + 1; 60 end = strtol(p, &endptr, 10); 61 break; 62 case ',': 63 p = endptr + 1; 64 continue; 65 default: 66 p = endptr; 67 continue; 68 } 69 if (errno) 70 return (errno); 71 if (end < port || end > 65535) 72 return (ERANGE); 73 while (port++ < end) 74 SET_PORT(port); 75 } 76 return (0); 77 } 78