1 /* 2 * dhcpcd - DHCP client daemon 3 * Copyright (c) 2006-2015 Roy Marples <roy (at) marples.name> 4 * All rights reserved 5 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 16 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 19 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 */ 27 28 #include <errno.h> 29 #include <inttypes.h> 30 #include <stdlib.h> 31 32 #include "strtoi.h" 33 34 intmax_t 35 strtoi(const char * __restrict nptr, char ** __restrict endptr, int base, 36 intmax_t lo, intmax_t hi, int *rstatus) 37 { 38 int serrno; 39 intmax_t r; 40 char *ep; 41 int rep; 42 43 if (endptr == NULL) 44 endptr = &ep; 45 if (rstatus == NULL) 46 rstatus = &rep; 47 48 serrno = errno; 49 errno = 0; 50 r = strtoimax(nptr, endptr, base); 51 *rstatus = errno; 52 errno = serrno; 53 54 if (*rstatus == 0) { 55 if (nptr == *endptr) 56 *rstatus = ECANCELED; 57 else if (**endptr != '\0') 58 *rstatus = ENOTSUP; 59 } 60 61 if (r < lo) { 62 if (*rstatus == 0) 63 *rstatus = ERANGE; 64 return lo; 65 } 66 if (r > hi) { 67 if (*rstatus == 0) 68 *rstatus = ERANGE; 69 return hi; 70 } 71 return r; 72 } 73 74 uintmax_t 75 strtou(const char * __restrict nptr, char ** __restrict endptr, int base, 76 uintmax_t lo, uintmax_t hi, int *rstatus) 77 { 78 int serrno; 79 uintmax_t r; 80 char *ep; 81 int rep; 82 83 if (endptr == NULL) 84 endptr = &ep; 85 if (rstatus == NULL) 86 rstatus = &rep; 87 88 serrno = errno; 89 errno = 0; 90 r = strtoumax(nptr, endptr, base); 91 *rstatus = errno; 92 errno = serrno; 93 94 if (*rstatus == 0) { 95 if (nptr == *endptr) 96 *rstatus = ECANCELED; 97 else if (**endptr != '\0') 98 *rstatus = ENOTSUP; 99 } 100 101 if (r < lo) { 102 if (*rstatus == 0) 103 *rstatus = ERANGE; 104 return lo; 105 } 106 if (r > hi) { 107 if (*rstatus == 0) 108 *rstatus = ERANGE; 109 return hi; 110 } 111 return r; 112 } 113
