2 bbcba3ed 2022-01-10 op * Copyright (c) 2004 Ted Unangst and Todd Miller
3 bbcba3ed 2022-01-10 op * All rights reserved.
5 bbcba3ed 2022-01-10 op * Permission to use, copy, modify, and distribute this software for any
6 bbcba3ed 2022-01-10 op * purpose with or without fee is hereby granted, provided that the above
7 bbcba3ed 2022-01-10 op * copyright notice and this permission notice appear in all copies.
9 bbcba3ed 2022-01-10 op * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
10 bbcba3ed 2022-01-10 op * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
11 bbcba3ed 2022-01-10 op * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
12 bbcba3ed 2022-01-10 op * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
13 bbcba3ed 2022-01-10 op * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
14 bbcba3ed 2022-01-10 op * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
15 bbcba3ed 2022-01-10 op * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18 bbcba3ed 2022-01-10 op #include <errno.h>
19 bbcba3ed 2022-01-10 op #include <limits.h>
20 bbcba3ed 2022-01-10 op #include <stdlib.h>
22 bbcba3ed 2022-01-10 op #include "compat.h"
24 bbcba3ed 2022-01-10 op #define INVALID 1
25 bbcba3ed 2022-01-10 op #define TOOSMALL 2
26 bbcba3ed 2022-01-10 op #define TOOLARGE 3
29 bbcba3ed 2022-01-10 op strtonum(const char *numstr, long long minval, long long maxval,
30 bbcba3ed 2022-01-10 op const char **errstrp)
32 bbcba3ed 2022-01-10 op long long ll = 0;
33 bbcba3ed 2022-01-10 op int error = 0;
35 bbcba3ed 2022-01-10 op struct errval {
36 bbcba3ed 2022-01-10 op const char *errstr;
40 bbcba3ed 2022-01-10 op { "invalid", EINVAL },
41 bbcba3ed 2022-01-10 op { "too small", ERANGE },
42 bbcba3ed 2022-01-10 op { "too large", ERANGE },
45 bbcba3ed 2022-01-10 op ev[0].err = errno;
47 bbcba3ed 2022-01-10 op if (minval > maxval) {
48 bbcba3ed 2022-01-10 op error = INVALID;
50 bbcba3ed 2022-01-10 op ll = strtoll(numstr, &ep, 10);
51 bbcba3ed 2022-01-10 op if (numstr == ep || *ep != '\0')
52 bbcba3ed 2022-01-10 op error = INVALID;
53 bbcba3ed 2022-01-10 op else if ((ll == LLONG_MIN && errno == ERANGE) || ll < minval)
54 bbcba3ed 2022-01-10 op error = TOOSMALL;
55 bbcba3ed 2022-01-10 op else if ((ll == LLONG_MAX && errno == ERANGE) || ll > maxval)
56 bbcba3ed 2022-01-10 op error = TOOLARGE;
58 bbcba3ed 2022-01-10 op if (errstrp != NULL)
59 bbcba3ed 2022-01-10 op *errstrp = ev[error].errstr;
60 bbcba3ed 2022-01-10 op errno = ev[error].err;