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dev-null-undefined
b91ea8889c
No rule in the scanner matches a NUL byte, so what re2c does with one
is undefined. Before 5ccc56b1e4 it happened to skip one character. Now
it returns a zero-length text token and pdo_parse_params() loops
forever, or reads an uninitialized YYMARKER if the NUL is the first
byte. Add a default rule so a NUL is skipped as one character of text
again.
Close GH-24496
54 lines
2.1 KiB
ReasonML
54 lines
2.1 KiB
ReasonML
/*
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+----------------------------------------------------------------------+
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| Copyright © The PHP Group and Contributors. |
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+----------------------------------------------------------------------+
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| This source file is subject to the Modified BSD License that is |
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| bundled with this package in the file LICENSE, and is available |
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| through the World Wide Web at <https://www.php.net/license/>. |
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| |
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| SPDX-License-Identifier: BSD-3-Clause |
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+----------------------------------------------------------------------+
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| Author: Matteo Beccati <mbeccati@php.net> |
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+----------------------------------------------------------------------+
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*/
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#include "php.h"
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#include "ext/pdo/php_pdo_driver.h"
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#include "ext/pdo/pdo_sql_parser.h"
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int pdo_pgsql_scanner(pdo_scanner_t *s)
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{
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const char *cursor = s->cur;
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s->tok = cursor;
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/*!re2c
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BINDCHR = [:][a-zA-Z0-9_]+;
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QUESTION = [?];
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ESCQUESTION = [?][?];
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COMMENTS = ("/*"([^*]+|[*]+[^/*])*[*]*"*/"|"--".*);
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DOLQ_START = [A-Za-z\200-\377_];
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DOLQ_CONT = [A-Za-z\200-\377_0-9];
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SPECIALS = [$eE:?"'/-];
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MULTICHAR = [:]{2,};
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ANYNOEOF = [\001-\377];
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TEXTCHR = ANYNOEOF\SPECIALS;
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*/
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/*!re2c
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[eE](['](([']['])|([\\]ANYNOEOF)|ANYNOEOF\['\\])*[']) { RET(PDO_PARSER_TEXT); }
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(["]((["]["])|ANYNOEOF\["])*["]) { RET(PDO_PARSER_TEXT); }
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(['](([']['])|ANYNOEOF\['])*[']) { RET(PDO_PARSER_TEXT); }
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[$](DOLQ_START DOLQ_CONT*)?[$] { RET(PDO_PARSER_CUSTOM_QUOTE); }
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MULTICHAR { RET(PDO_PARSER_TEXT); }
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ESCQUESTION { RET(PDO_PARSER_ESCAPED_QUESTION); }
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BINDCHR { RET(PDO_PARSER_BIND); }
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QUESTION { RET(PDO_PARSER_BIND_POS); }
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SPECIALS { SKIP_ONE(PDO_PARSER_TEXT); }
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COMMENTS { RET(PDO_PARSER_TEXT); }
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/* Plain text may contain e/E, as long as it doesn't end with one, which could start an E'...' string */
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([eE]* TEXTCHR)+ { RET(PDO_PARSER_TEXT); }
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* { SKIP_ONE(PDO_PARSER_TEXT); }
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*/
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}
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