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openssl/crypto/ctype.c

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This has been added to avoid the situation where some host ctype.h functions return true for characters > 127. I.e. they are allowing extended ASCII characters through which then cause problems. E.g. marking superscript '2' as a number then causes the common (ch - '0') conversion to number to fail miserably. Likewise letters with diacritical marks can also cause problems. If a non-ASCII character set is being used (currently only EBCDIC), it is adjusted for. The implementation uses a single table with a bit for each of the defined classes. These functions accept an int argument and fail for values out of range or for characters outside of the ASCII set. They will work for both signed and unsigned character inputs. Reviewed-by: Andy Polyakov <appro@openssl.org> (Merged from https://github.com/openssl/openssl/pull/4102)
2017-08-21 05:19:17 +08:00
/*
Copyright year updates Reviewed-by: Richard Levitte <levitte@openssl.org> Release: yes
2023-09-07 16:59:15 +08:00
* Copyright 2017-2023 The OpenSSL Project Authors. All Rights Reserved.
This has been added to avoid the situation where some host ctype.h functions return true for characters > 127. I.e. they are allowing extended ASCII characters through which then cause problems. E.g. marking superscript '2' as a number then causes the common (ch - '0') conversion to number to fail miserably. Likewise letters with diacritical marks can also cause problems. If a non-ASCII character set is being used (currently only EBCDIC), it is adjusted for. The implementation uses a single table with a bit for each of the defined classes. These functions accept an int argument and fail for values out of range or for characters outside of the ASCII set. They will work for both signed and unsigned character inputs. Reviewed-by: Andy Polyakov <appro@openssl.org> (Merged from https://github.com/openssl/openssl/pull/4102)
2017-08-21 05:19:17 +08:00
*
Following the license change, modify the boilerplates in crypto/ [skip ci] Reviewed-by: Matt Caswell <matt@openssl.org> (Merged from https://github.com/openssl/openssl/pull/7827)
2018-12-06 21:03:01 +08:00
* Licensed under the Apache License 2.0 (the "License"). You may not use
This has been added to avoid the situation where some host ctype.h functions return true for characters > 127. I.e. they are allowing extended ASCII characters through which then cause problems. E.g. marking superscript '2' as a number then causes the common (ch - '0') conversion to number to fail miserably. Likewise letters with diacritical marks can also cause problems. If a non-ASCII character set is being used (currently only EBCDIC), it is adjusted for. The implementation uses a single table with a bit for each of the defined classes. These functions accept an int argument and fail for values out of range or for characters outside of the ASCII set. They will work for both signed and unsigned character inputs. Reviewed-by: Andy Polyakov <appro@openssl.org> (Merged from https://github.com/openssl/openssl/pull/4102)
2017-08-21 05:19:17 +08:00
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include <string.h>
Check for EOF in ASCII conversions. The C standard defines EOF as: ... an integer constant expression, with type int and a negative value... This means a conforming implemenetation could define this as a one of the printable characters. This won't be a problem for ASCII. A specific test case has been added for EOF. Reviewed-by: Richard Levitte <levitte@openssl.org> (Merged from https://github.com/openssl/openssl/pull/4240)
2017-08-24 08:46:31 +08:00
#include <stdio.h>
Reorganize private crypto header files Currently, there are two different directories which contain internal header files of libcrypto which are meant to be shared internally: While header files in 'include/internal' are intended to be shared between libcrypto and libssl, the files in 'crypto/include/internal' are intended to be shared inside libcrypto only. To make things complicated, the include search path is set up in such a way that the directive #include "internal/file.h" could refer to a file in either of these two directoroes. This makes it necessary in some cases to add a '_int.h' suffix to some files to resolve this ambiguity: #include "internal/file.h" # located in 'include/internal' #include "internal/file_int.h" # located in 'crypto/include/internal' This commit moves the private crypto headers from 'crypto/include/internal' to 'include/crypto' As a result, the include directives become unambiguous #include "internal/file.h" # located in 'include/internal' #include "crypto/file.h" # located in 'include/crypto' hence the superfluous '_int.h' suffixes can be stripped. The files 'store_int.h' and 'store.h' need to be treated specially; they are joined into a single file. Reviewed-by: Richard Levitte <levitte@openssl.org> (Merged from https://github.com/openssl/openssl/pull/9333)
2019-09-28 06:45:33 +08:00
#include "crypto/ctype.h"
Use <> for #include openssl/xxx Reviewed-by: Shane Lontis <shane.lontis@oracle.com> Reviewed-by: Paul Dale <pauli@openssl.org> (Merged from https://github.com/openssl/openssl/pull/15468)
2021-05-26 03:06:22 +08:00
#include <openssl/ebcdic.h>
Move OPENSSL_strcasecmp() and related to o_str.c Otherwise the implementation is unnecessarily duplicated in legacy.so. Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com> Reviewed-by: Paul Dale <pauli@openssl.org> (Merged from https://github.com/openssl/openssl/pull/18282)
2022-05-10 22:31:20 +08:00
This has been added to avoid the situation where some host ctype.h functions return true for characters > 127. I.e. they are allowing extended ASCII characters through which then cause problems. E.g. marking superscript '2' as a number then causes the common (ch - '0') conversion to number to fail miserably. Likewise letters with diacritical marks can also cause problems. If a non-ASCII character set is being used (currently only EBCDIC), it is adjusted for. The implementation uses a single table with a bit for each of the defined classes. These functions accept an int argument and fail for values out of range or for characters outside of the ASCII set. They will work for both signed and unsigned character inputs. Reviewed-by: Andy Polyakov <appro@openssl.org> (Merged from https://github.com/openssl/openssl/pull/4102)
2017-08-21 05:19:17 +08:00
/*
* Define the character classes for each character in the seven bit ASCII
* character set. This is independent of the host's character set, characters
* are converted to ASCII before being used as an index in to this table.
* Characters outside of the seven bit ASCII range are detected before indexing.
*/
static const unsigned short ctype_char_map[128] = {
/* 00 nul */ CTYPE_MASK_cntrl,
/* 01 soh */ CTYPE_MASK_cntrl,
/* 02 stx */ CTYPE_MASK_cntrl,
/* 03 etx */ CTYPE_MASK_cntrl,
/* 04 eot */ CTYPE_MASK_cntrl,
/* 05 enq */ CTYPE_MASK_cntrl,
/* 06 ack */ CTYPE_MASK_cntrl,
/* 07 \a */ CTYPE_MASK_cntrl,
/* 08 \b */ CTYPE_MASK_cntrl,
/* 09 \t */ CTYPE_MASK_blank | CTYPE_MASK_cntrl | CTYPE_MASK_space,
/* 0A \n */ CTYPE_MASK_cntrl | CTYPE_MASK_space,
/* 0B \v */ CTYPE_MASK_cntrl | CTYPE_MASK_space,
/* 0C \f */ CTYPE_MASK_cntrl | CTYPE_MASK_space,
/* 0D \r */ CTYPE_MASK_cntrl | CTYPE_MASK_space,
/* 0E so */ CTYPE_MASK_cntrl,
/* 0F si */ CTYPE_MASK_cntrl,
/* 10 dle */ CTYPE_MASK_cntrl,
/* 11 dc1 */ CTYPE_MASK_cntrl,
/* 12 dc2 */ CTYPE_MASK_cntrl,
/* 13 dc3 */ CTYPE_MASK_cntrl,
/* 14 dc4 */ CTYPE_MASK_cntrl,
/* 15 nak */ CTYPE_MASK_cntrl,
/* 16 syn */ CTYPE_MASK_cntrl,
/* 17 etb */ CTYPE_MASK_cntrl,
/* 18 can */ CTYPE_MASK_cntrl,
/* 19 em */ CTYPE_MASK_cntrl,
/* 1A sub */ CTYPE_MASK_cntrl,
/* 1B esc */ CTYPE_MASK_cntrl,
/* 1C fs */ CTYPE_MASK_cntrl,
/* 1D gs */ CTYPE_MASK_cntrl,
/* 1E rs */ CTYPE_MASK_cntrl,
/* 1F us */ CTYPE_MASK_cntrl,
/* 20 */ CTYPE_MASK_blank | CTYPE_MASK_print | CTYPE_MASK_space
| CTYPE_MASK_asn1print,
/* 21 ! */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
/* 22 " */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
/* 23 # */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
/* 24 $ */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
/* 25 % */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
/* 26 & */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
/* 27 ' */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct
| CTYPE_MASK_asn1print,
/* 28 ( */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct
| CTYPE_MASK_asn1print,
/* 29 ) */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct
| CTYPE_MASK_asn1print,
/* 2A * */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
/* 2B + */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct
| CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 2C , */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct
| CTYPE_MASK_asn1print,
/* 2D - */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct
| CTYPE_MASK_asn1print,
/* 2E . */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct
| CTYPE_MASK_asn1print,
/* 2F / */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct
| CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 30 0 */ CTYPE_MASK_digit | CTYPE_MASK_graph | CTYPE_MASK_print
| CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 31 1 */ CTYPE_MASK_digit | CTYPE_MASK_graph | CTYPE_MASK_print
| CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 32 2 */ CTYPE_MASK_digit | CTYPE_MASK_graph | CTYPE_MASK_print
| CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 33 3 */ CTYPE_MASK_digit | CTYPE_MASK_graph | CTYPE_MASK_print
| CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 34 4 */ CTYPE_MASK_digit | CTYPE_MASK_graph | CTYPE_MASK_print
| CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 35 5 */ CTYPE_MASK_digit | CTYPE_MASK_graph | CTYPE_MASK_print
| CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 36 6 */ CTYPE_MASK_digit | CTYPE_MASK_graph | CTYPE_MASK_print
| CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 37 7 */ CTYPE_MASK_digit | CTYPE_MASK_graph | CTYPE_MASK_print
| CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 38 8 */ CTYPE_MASK_digit | CTYPE_MASK_graph | CTYPE_MASK_print
| CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 39 9 */ CTYPE_MASK_digit | CTYPE_MASK_graph | CTYPE_MASK_print
| CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 3A : */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct
| CTYPE_MASK_asn1print,
/* 3B ; */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
/* 3C < */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
/* 3D = */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct
| CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 3E > */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
/* 3F ? */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct
| CTYPE_MASK_asn1print,
/* 40 @ */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
/* 41 A */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
| CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 42 B */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
| CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 43 C */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
| CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 44 D */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
| CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 45 E */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
| CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 46 F */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
| CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 47 G */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
| CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 48 H */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
| CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 49 I */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
| CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 4A J */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
| CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 4B K */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
| CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 4C L */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
| CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 4D M */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
| CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 4E N */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
| CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 4F O */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
| CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 50 P */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
| CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 51 Q */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
| CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 52 R */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
| CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 53 S */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
| CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 54 T */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
| CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 55 U */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
| CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 56 V */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
| CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 57 W */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
| CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 58 X */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
| CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 59 Y */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
| CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 5A Z */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_upper
| CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 5B [ */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
/* 5C \ */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
/* 5D ] */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
/* 5E ^ */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
/* 5F _ */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
/* 60 ` */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
/* 61 a */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
| CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 62 b */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
| CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 63 c */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
| CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 64 d */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
| CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 65 e */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
| CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 66 f */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
| CTYPE_MASK_xdigit | CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 67 g */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
| CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 68 h */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
| CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 69 i */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
| CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 6A j */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
| CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 6B k */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
| CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 6C l */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
| CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 6D m */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
| CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 6E n */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
| CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 6F o */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
| CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 70 p */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
| CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 71 q */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
| CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 72 r */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
| CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 73 s */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
| CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 74 t */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
| CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 75 u */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
| CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 76 v */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
| CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 77 w */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
| CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 78 x */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
| CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 79 y */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
| CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 7A z */ CTYPE_MASK_graph | CTYPE_MASK_lower | CTYPE_MASK_print
| CTYPE_MASK_base64 | CTYPE_MASK_asn1print,
/* 7B { */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
/* 7C | */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
/* 7D } */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
/* 7E ~ */ CTYPE_MASK_graph | CTYPE_MASK_print | CTYPE_MASK_punct,
/* 7F del */ CTYPE_MASK_cntrl
};
#ifdef CHARSET_EBCDIC
int ossl_toascii(int c)
{
Check for EOF in ASCII conversions. The C standard defines EOF as: ... an integer constant expression, with type int and a negative value... This means a conforming implemenetation could define this as a one of the printable characters. This won't be a problem for ASCII. A specific test case has been added for EOF. Reviewed-by: Richard Levitte <levitte@openssl.org> (Merged from https://github.com/openssl/openssl/pull/4240)
2017-08-24 08:46:31 +08:00
if (c < -128 || c > 256 || c == EOF)
This has been added to avoid the situation where some host ctype.h functions return true for characters > 127. I.e. they are allowing extended ASCII characters through which then cause problems. E.g. marking superscript '2' as a number then causes the common (ch - '0') conversion to number to fail miserably. Likewise letters with diacritical marks can also cause problems. If a non-ASCII character set is being used (currently only EBCDIC), it is adjusted for. The implementation uses a single table with a bit for each of the defined classes. These functions accept an int argument and fail for values out of range or for characters outside of the ASCII set. They will work for both signed and unsigned character inputs. Reviewed-by: Andy Polyakov <appro@openssl.org> (Merged from https://github.com/openssl/openssl/pull/4102)
2017-08-21 05:19:17 +08:00
return c;
/*
* Adjust negatively signed characters.
* This is not required for ASCII because any character that sign extends
* is not seven bit and all of the checks are on the seven bit characters.
* I.e. any check must fail on sign extension.
*/
if (c < 0)
c += 256;
return os_toascii[c];
}
int ossl_fromascii(int c)
{
Check for EOF in ASCII conversions. The C standard defines EOF as: ... an integer constant expression, with type int and a negative value... This means a conforming implemenetation could define this as a one of the printable characters. This won't be a problem for ASCII. A specific test case has been added for EOF. Reviewed-by: Richard Levitte <levitte@openssl.org> (Merged from https://github.com/openssl/openssl/pull/4240)
2017-08-24 08:46:31 +08:00
if (c < -128 || c > 256 || c == EOF)
This has been added to avoid the situation where some host ctype.h functions return true for characters > 127. I.e. they are allowing extended ASCII characters through which then cause problems. E.g. marking superscript '2' as a number then causes the common (ch - '0') conversion to number to fail miserably. Likewise letters with diacritical marks can also cause problems. If a non-ASCII character set is being used (currently only EBCDIC), it is adjusted for. The implementation uses a single table with a bit for each of the defined classes. These functions accept an int argument and fail for values out of range or for characters outside of the ASCII set. They will work for both signed and unsigned character inputs. Reviewed-by: Andy Polyakov <appro@openssl.org> (Merged from https://github.com/openssl/openssl/pull/4102)
2017-08-21 05:19:17 +08:00
return c;
if (c < 0)
c += 256;
return os_toebcdic[c];
}
#endif
int ossl_ctype_check(int c, unsigned int mask)
{
const int max = sizeof(ctype_char_map) / sizeof(*ctype_char_map);
Avoid a self-assignment. Clang is generating a warning over an assignment of a variable to itself. This occurs on an ASCII based machine where the convert to ASCII macro doesn't do anything. The fix is to introduce a temporary variable. Reviewed-by: Richard Levitte <levitte@openssl.org> (Merged from https://github.com/openssl/openssl/pull/4214)
2017-08-22 11:05:30 +08:00
const int a = ossl_toascii(c);
This has been added to avoid the situation where some host ctype.h functions return true for characters > 127. I.e. they are allowing extended ASCII characters through which then cause problems. E.g. marking superscript '2' as a number then causes the common (ch - '0') conversion to number to fail miserably. Likewise letters with diacritical marks can also cause problems. If a non-ASCII character set is being used (currently only EBCDIC), it is adjusted for. The implementation uses a single table with a bit for each of the defined classes. These functions accept an int argument and fail for values out of range or for characters outside of the ASCII set. They will work for both signed and unsigned character inputs. Reviewed-by: Andy Polyakov <appro@openssl.org> (Merged from https://github.com/openssl/openssl/pull/4102)
2017-08-21 05:19:17 +08:00
Avoid a self-assignment. Clang is generating a warning over an assignment of a variable to itself. This occurs on an ASCII based machine where the convert to ASCII macro doesn't do anything. The fix is to introduce a temporary variable. Reviewed-by: Richard Levitte <levitte@openssl.org> (Merged from https://github.com/openssl/openssl/pull/4214)
2017-08-22 11:05:30 +08:00
return a >= 0 && a < max && (ctype_char_map[a] & mask) != 0;
This has been added to avoid the situation where some host ctype.h functions return true for characters > 127. I.e. they are allowing extended ASCII characters through which then cause problems. E.g. marking superscript '2' as a number then causes the common (ch - '0') conversion to number to fail miserably. Likewise letters with diacritical marks can also cause problems. If a non-ASCII character set is being used (currently only EBCDIC), it is adjusted for. The implementation uses a single table with a bit for each of the defined classes. These functions accept an int argument and fail for values out of range or for characters outside of the ASCII set. They will work for both signed and unsigned character inputs. Reviewed-by: Andy Polyakov <appro@openssl.org> (Merged from https://github.com/openssl/openssl/pull/4102)
2017-08-21 05:19:17 +08:00
}
tolower: refine the tolower code to avoid a memory access This improves the performance of this function and the ones that rely on it (ossl_lh_strcasehash primarily). Reviewed-by: Tomas Mraz <tomas@openssl.org> Reviewed-by: Tim Hudson <tjh@openssl.org> Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com> (Merged from https://github.com/openssl/openssl/pull/18344)
2022-05-19 10:23:55 +08:00
/*
Fixed typos in documentation and comments Fixed typo: accomodate -> accommodate Fixed typo: analagous -> analogous Fixed typo: auxilliary -> auxiliary Fixed typo: eigth -> eighth Fixed typo: explotation -> exploitation Fixed typo: originaly -> originally Fixed typo: simplier -> simpler Fixed typo: sucessful -> successful Fixed typo: recievers -> receivers Reviewed-by: Richard Levitte <levitte@openssl.org> Reviewed-by: Tomas Mraz <tomas@openssl.org> (Merged from https://github.com/openssl/openssl/pull/19977)
2023-01-02 05:50:11 +08:00
* Implement some of the simpler functions directly to avoid the overhead of
tolower: refine the tolower code to avoid a memory access This improves the performance of this function and the ones that rely on it (ossl_lh_strcasehash primarily). Reviewed-by: Tomas Mraz <tomas@openssl.org> Reviewed-by: Tim Hudson <tjh@openssl.org> Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com> (Merged from https://github.com/openssl/openssl/pull/18344)
2022-05-19 10:23:55 +08:00
* accessing memory via ctype_char_map[].
*/
#define ASCII_IS_DIGIT(c) (c >= 0x30 && c <= 0x39)
#define ASCII_IS_UPPER(c) (c >= 0x41 && c <= 0x5A)
#define ASCII_IS_LOWER(c) (c >= 0x61 && c <= 0x7A)
int ossl_isdigit(int c)
{
int a = ossl_toascii(c);
return ASCII_IS_DIGIT(a);
}
int ossl_isupper(int c)
{
int a = ossl_toascii(c);
return ASCII_IS_UPPER(a);
}
int ossl_islower(int c)
{
int a = ossl_toascii(c);
return ASCII_IS_LOWER(a);
}
This has been added to avoid the situation where some host ctype.h functions return true for characters > 127. I.e. they are allowing extended ASCII characters through which then cause problems. E.g. marking superscript '2' as a number then causes the common (ch - '0') conversion to number to fail miserably. Likewise letters with diacritical marks can also cause problems. If a non-ASCII character set is being used (currently only EBCDIC), it is adjusted for. The implementation uses a single table with a bit for each of the defined classes. These functions accept an int argument and fail for values out of range or for characters outside of the ASCII set. They will work for both signed and unsigned character inputs. Reviewed-by: Andy Polyakov <appro@openssl.org> (Merged from https://github.com/openssl/openssl/pull/4102)
2017-08-21 05:19:17 +08:00
#if defined(CHARSET_EBCDIC) && !defined(CHARSET_EBCDIC_TEST)
static const int case_change = 0x40;
#else
static const int case_change = 0x20;
#endif
int ossl_tolower(int c)
{
tolower: refine the tolower code to avoid a memory access This improves the performance of this function and the ones that rely on it (ossl_lh_strcasehash primarily). Reviewed-by: Tomas Mraz <tomas@openssl.org> Reviewed-by: Tim Hudson <tjh@openssl.org> Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com> (Merged from https://github.com/openssl/openssl/pull/18344)
2022-05-19 10:23:55 +08:00
int a = ossl_toascii(c);
return ASCII_IS_UPPER(a) ? c ^ case_change : c;
This has been added to avoid the situation where some host ctype.h functions return true for characters > 127. I.e. they are allowing extended ASCII characters through which then cause problems. E.g. marking superscript '2' as a number then causes the common (ch - '0') conversion to number to fail miserably. Likewise letters with diacritical marks can also cause problems. If a non-ASCII character set is being used (currently only EBCDIC), it is adjusted for. The implementation uses a single table with a bit for each of the defined classes. These functions accept an int argument and fail for values out of range or for characters outside of the ASCII set. They will work for both signed and unsigned character inputs. Reviewed-by: Andy Polyakov <appro@openssl.org> (Merged from https://github.com/openssl/openssl/pull/4102)
2017-08-21 05:19:17 +08:00
}
int ossl_toupper(int c)
{
tolower: refine the tolower code to avoid a memory access This improves the performance of this function and the ones that rely on it (ossl_lh_strcasehash primarily). Reviewed-by: Tomas Mraz <tomas@openssl.org> Reviewed-by: Tim Hudson <tjh@openssl.org> Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com> (Merged from https://github.com/openssl/openssl/pull/18344)
2022-05-19 10:23:55 +08:00
int a = ossl_toascii(c);
return ASCII_IS_LOWER(a) ? c ^ case_change : c;
This has been added to avoid the situation where some host ctype.h functions return true for characters > 127. I.e. they are allowing extended ASCII characters through which then cause problems. E.g. marking superscript '2' as a number then causes the common (ch - '0') conversion to number to fail miserably. Likewise letters with diacritical marks can also cause problems. If a non-ASCII character set is being used (currently only EBCDIC), it is adjusted for. The implementation uses a single table with a bit for each of the defined classes. These functions accept an int argument and fail for values out of range or for characters outside of the ASCII set. They will work for both signed and unsigned character inputs. Reviewed-by: Andy Polyakov <appro@openssl.org> (Merged from https://github.com/openssl/openssl/pull/4102)
2017-08-21 05:19:17 +08:00
}
Add missing EBCDIC strings Fix a few places where calling ossl_isdigit does the wrong thing on EBCDIC based systems. Replaced with ascii_isdigit. Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org> Reviewed-by: Matt Caswell <matt@openssl.org> (Merged from https://github.com/openssl/openssl/pull/9556)
2019-08-09 02:11:38 +08:00
tolower: refine the tolower code to avoid a memory access This improves the performance of this function and the ones that rely on it (ossl_lh_strcasehash primarily). Reviewed-by: Tomas Mraz <tomas@openssl.org> Reviewed-by: Tim Hudson <tjh@openssl.org> Reviewed-by: Dmitry Belyavskiy <beldmit@gmail.com> (Merged from https://github.com/openssl/openssl/pull/18344)
2022-05-19 10:23:55 +08:00
int ossl_ascii_isdigit(int c)
{
return ASCII_IS_DIGIT(c);
Add missing EBCDIC strings Fix a few places where calling ossl_isdigit does the wrong thing on EBCDIC based systems. Replaced with ascii_isdigit. Reviewed-by: Tomas Mraz <tmraz@fedoraproject.org> Reviewed-by: Matt Caswell <matt@openssl.org> (Merged from https://github.com/openssl/openssl/pull/9556)
2019-08-09 02:11:38 +08:00
}