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annotate target-utils/libc/strtoul.c @ 1011:6d9b10633f10 default tip

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etmsync Pirelli IMEI retrieval: fix poor use of printf() Bug reported by Vadim Yanitskiy <fixeria@osmocom.org>: the construct where a static-allocated string was passed to printf() without any format arguments causes newer compilers to report a security problem. Given that formatted output is not needed here, just fixed string output, change printf() to fputs(), and direct the error message to stderr while at it.
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 23 May 2024 17:29:57 +0000
parents d8d03dafb9c0
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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96
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1 /*
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2 * Copyright (c) 1990, 1993
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3 * The Regents of the University of California. All rights reserved.
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4 *
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5 * Redistribution and use in source and binary forms, with or without
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6 * modification, are permitted provided that the following conditions
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7 * are met:
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8 * 1. Redistributions of source code must retain the above copyright
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9 * notice, this list of conditions and the following disclaimer.
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10 * 2. Redistributions in binary form must reproduce the above copyright
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11 * notice, this list of conditions and the following disclaimer in the
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12 * documentation and/or other materials provided with the distribution.
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13 * 3. All advertising materials mentioning features or use of this software
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14 * must display the following acknowledgement:
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15 * This product includes software developed by the University of
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16 * California, Berkeley and its contributors.
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17 * 4. Neither the name of the University nor the names of its contributors
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18 * may be used to endorse or promote products derived from this software
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19 * without specific prior written permission.
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20 *
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21 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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22 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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23 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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24 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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25 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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26 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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27 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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28 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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29 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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30 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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31 * SUCH DAMAGE.
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32 */
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33
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34 /*
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35 * Embedded libc note: the present version of strtoul() has been
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36 * simplified in that overflow checking has been removed.
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37 * This simplification is needed for embedded systems in which
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38 * there is no UNIX-style errno global variable.
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39 */
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40
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41 #include <ctype.h>
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42
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43 /*
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44 * Convert a string to an unsigned long integer.
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45 *
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46 * Ignores `locale' stuff. Assumes that the upper and lower case
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47 * alphabets and digits are each contiguous.
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48 */
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49 unsigned long
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50 strtoul(nptr, endptr, base)
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51 const char *nptr;
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52 char **endptr;
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53 register int base;
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54 {
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55 register const char *s = nptr;
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56 register unsigned long acc;
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57 register int c;
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58 register int neg = 0, any;
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59
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60 /*
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61 * See strtol for comments as to the logic used.
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62 */
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63 do {
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64 c = *s++;
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65 } while (isspace(c));
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66 if (c == '-') {
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67 neg = 1;
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68 c = *s++;
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69 } else if (c == '+')
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70 c = *s++;
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71 if ((base == 0 || base == 16) &&
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72 c == '0' && (*s == 'x' || *s == 'X')) {
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73 c = s[1];
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74 s += 2;
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75 base = 16;
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76 }
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77 if (base == 0)
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78 base = c == '0' ? 8 : 10;
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79
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80 for (acc = 0, any = 0;; c = *s++) {
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81 if (isdigit(c))
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82 c -= '0';
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83 else if (isalpha(c))
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84 c -= isupper(c) ? 'A' - 10 : 'a' - 10;
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85 else
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86 break;
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87 if (c >= base)
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88 break;
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89 any = 1;
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90 acc *= base;
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91 acc += c;
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92 }
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93 if (neg)
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94 acc = -acc;
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95 if (endptr != 0)
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96 *endptr = (char *)(any ? s - 1 : nptr);
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97 return (acc);
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98 }