1 /* 2 * Copyright 2017-2019 The OpenSSL Project Authors. All Rights Reserved. 3 * 4 * Licensed under the OpenSSL license (the "License"). You may not use 5 * this file except in compliance with the License. You can obtain a copy 6 * in the file LICENSE in the source distribution or at 7 * https://www.openssl.org/source/license.html 8 */ 9 10 /* 11 * This version of ctype.h provides a standardised and platform 12 * independent implementation that supports seven bit ASCII characters. 13 * The specific intent is to not pass extended ASCII characters (> 127) 14 * even if the host operating system would. 15 * 16 * There is EBCDIC support included for machines which use this. However, 17 * there are a number of concerns about how well EBCDIC is supported 18 * throughout the rest of the source code. Refer to issue #4154 for 19 * details. 20 */ 21 #ifndef OSSL_CRYPTO_CTYPE_H 22 # define OSSL_CRYPTO_CTYPE_H 23 24 # define CTYPE_MASK_lower 0x1 25 # define CTYPE_MASK_upper 0x2 26 # define CTYPE_MASK_digit 0x4 27 # define CTYPE_MASK_space 0x8 28 # define CTYPE_MASK_xdigit 0x10 29 # define CTYPE_MASK_blank 0x20 30 # define CTYPE_MASK_cntrl 0x40 31 # define CTYPE_MASK_graph 0x80 32 # define CTYPE_MASK_print 0x100 33 # define CTYPE_MASK_punct 0x200 34 # define CTYPE_MASK_base64 0x400 35 # define CTYPE_MASK_asn1print 0x800 36 37 # define CTYPE_MASK_alpha (CTYPE_MASK_lower | CTYPE_MASK_upper) 38 # define CTYPE_MASK_alnum (CTYPE_MASK_alpha | CTYPE_MASK_digit) 39 40 /* 41 * The ascii mask assumes that any other classification implies that 42 * the character is ASCII and that there are no ASCII characters 43 * that aren't in any of the classifications. 44 * 45 * This assumption holds at the moment, but it might not in the future. 46 */ 47 # define CTYPE_MASK_ascii (~0) 48 49 # ifdef CHARSET_EBCDIC 50 int ossl_toascii(int c); 51 int ossl_fromascii(int c); 52 # else 53 # define ossl_toascii(c) (c) 54 # define ossl_fromascii(c) (c) 55 # endif 56 int ossl_ctype_check(int c, unsigned int mask); 57 int ossl_tolower(int c); 58 int ossl_toupper(int c); 59 60 int ascii_isdigit(const char inchar); 61 62 # define ossl_isalnum(c) (ossl_ctype_check((c), CTYPE_MASK_alnum)) 63 # define ossl_isalpha(c) (ossl_ctype_check((c), CTYPE_MASK_alpha)) 64 # ifdef CHARSET_EBCDIC 65 # define ossl_isascii(c) (ossl_ctype_check((c), CTYPE_MASK_ascii)) 66 # else 67 # define ossl_isascii(c) (((c) & ~127) == 0) 68 # endif 69 # define ossl_isblank(c) (ossl_ctype_check((c), CTYPE_MASK_blank)) 70 # define ossl_iscntrl(c) (ossl_ctype_check((c), CTYPE_MASK_cntrl)) 71 # define ossl_isdigit(c) (ossl_ctype_check((c), CTYPE_MASK_digit)) 72 # define ossl_isgraph(c) (ossl_ctype_check((c), CTYPE_MASK_graph)) 73 # define ossl_islower(c) (ossl_ctype_check((c), CTYPE_MASK_lower)) 74 # define ossl_isprint(c) (ossl_ctype_check((c), CTYPE_MASK_print)) 75 # define ossl_ispunct(c) (ossl_ctype_check((c), CTYPE_MASK_punct)) 76 # define ossl_isspace(c) (ossl_ctype_check((c), CTYPE_MASK_space)) 77 # define ossl_isupper(c) (ossl_ctype_check((c), CTYPE_MASK_upper)) 78 # define ossl_isxdigit(c) (ossl_ctype_check((c), CTYPE_MASK_xdigit)) 79 # define ossl_isbase64(c) (ossl_ctype_check((c), CTYPE_MASK_base64)) 80 # define ossl_isasn1print(c) (ossl_ctype_check((c), CTYPE_MASK_asn1print)) 81 82 #endif 83