1 /*
2 * dhcpcd - DHCP client daemon
3 * Copyright (c) 2006-2015 Roy Marples <roy@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
strtoi(const char * __restrict nptr,char ** __restrict endptr,int base,intmax_t lo,intmax_t hi,int * rstatus)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
strtou(const char * __restrict nptr,char ** __restrict endptr,int base,uintmax_t lo,uintmax_t hi,int * rstatus)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