1 /*
2 * Copyright (c) 2001-2018 The strace developers.
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 * 3. The name of the author may not be used to endorse or promote products
14 * derived from this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 #ifdef HAVE_CONFIG_H
29 # include "config.h"
30 #endif
31
32 #include <errno.h>
33 #include <stdlib.h>
34 #include <string.h>
35
36 #include "string_to_uint.h"
37
38 long long
string_to_uint_ex(const char * const str,char ** const endptr,const unsigned long long max_val,const char * const accepted_ending)39 string_to_uint_ex(const char *const str, char **const endptr,
40 const unsigned long long max_val,
41 const char *const accepted_ending)
42 {
43 char *end;
44 long long val;
45
46 if (!*str)
47 return -1;
48
49 errno = 0;
50 val = strtoll(str, &end, 10);
51
52 if (str == end || val < 0 || (unsigned long long) val > max_val
53 || (val == LLONG_MAX && errno == ERANGE))
54 return -1;
55
56 if (*end && (!accepted_ending || !strchr(accepted_ending, *end)))
57 return -1;
58
59 if (endptr)
60 *endptr = end;
61
62 return val;
63 }
64