| /* | |
| +----------------------------------------------------------------------+ | |
| | phar php single-file executable PHP extension | | |
| +----------------------------------------------------------------------+ | |
| | Copyright (c) The PHP Group | | |
| +----------------------------------------------------------------------+ | |
| | This source file is subject to version 3.01 of the PHP license, | | |
| | that is bundled with this package in the file LICENSE, and is | | |
| | available through the world-wide-web at the following url: | | |
| | https://www.php.net/license/3_01.txt | | |
| | If you did not receive a copy of the PHP license and are unable to | | |
| | obtain it through the world-wide-web, please send a note to | | |
| | license@php.net so we can mail you a copy immediately. | | |
| +----------------------------------------------------------------------+ | |
| | Authors: Marcus Boerger <helly@php.net> | | |
| +----------------------------------------------------------------------+ | |
| */ | |
| #include "phar_internal.h" | |
| phar_path_check_result phar_path_check(char **s, size_t *len, const char **error) | |
| { | |
| const unsigned char *p = (const unsigned char*)*s; | |
| const unsigned char *m; | |
| if (*len == 1 && *p == '.') { | |
| *error = "current directory reference"; | |
| return pcr_err_curr_dir; | |
| } else if (*len == 2 && p[0] == '.' && p[1] == '.') { | |
| *error = "upper directory reference"; | |
| return pcr_err_up_dir; | |
| } | |
| #define YYCTYPE unsigned char | |
| #define YYCURSOR p | |
| #define YYLIMIT p+*len | |
| #define YYMARKER m | |
| #define YYFILL(n) do {} while (0) | |
| loop: | |
| /*!re2c | |
| END = "\x00"; | |
| NEWLINE = "\r"? "\n"; | |
| UTF8T = [\x80-\xBF] ; | |
| UTF8_1 = [\x1A-\x7F] ; | |
| UTF8_2 = [\xC2-\xDF] UTF8T ; | |
| UTF8_3A = "\xE0" [\xA0-\xBF] UTF8T ; | |
| UTF8_3B = [\xE1-\xEC] UTF8T{2} ; | |
| UTF8_3C = "\xED" [\x80-\x9F] UTF8T ; | |
| UTF8_3D = [\xEE-\xEF] UTF8T{2} ; | |
| UTF8_3 = UTF8_3A | UTF8_3B | UTF8_3C | UTF8_3D ; | |
| UTF8_4A = "\xF0"[\x90-\xBF] UTF8T{2} ; | |
| UTF8_4B = [\xF1-\xF3] UTF8T{3} ; | |
| UTF8_4C = "\xF4" [\x80-\x8F] UTF8T{2} ; | |
| UTF8_4 = UTF8_4A | UTF8_4B | UTF8_4C ; | |
| UTF8 = UTF8_1 | UTF8_2 | UTF8_3 | UTF8_4 ; | |
| EOS = "/" | END; | |
| ANY = . | NEWLINE; | |
| "//" { | |
| *error = "double slash"; | |
| return pcr_err_double_slash; | |
| } | |
| "/.." EOS { | |
| *error = "upper directory reference"; | |
| return pcr_err_up_dir; | |
| } | |
| "/." EOS { | |
| *error = "current directory reference"; | |
| return pcr_err_curr_dir; | |
| } | |
| "\\" { | |
| *error = "back-slash"; | |
| return pcr_err_back_slash; | |
| } | |
| "*" { | |
| *error = "star"; | |
| return pcr_err_star; | |
| } | |
| "?" { | |
| if (**s == '/') { | |
| (*s)++; | |
| } | |
| *len = (p - (const unsigned char*)*s) -1; | |
| *error = NULL; | |
| return pcr_use_query; | |
| } | |
| UTF8 { | |
| goto loop; | |
| } | |
| END { | |
| if (**s == '/') { | |
| (*s)++; | |
| (*len)--; | |
| } | |
| if ((p - (const unsigned char*)*s) - 1 != *len) | |
| { | |
| *error ="illegal character"; | |
| return pcr_err_illegal_char; | |
| } | |
| *error = NULL; | |
| return pcr_is_ok; | |
| } | |
| ANY { | |
| *error ="illegal character"; | |
| return pcr_err_illegal_char; | |
| } | |
| */ | |
| } | |