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apparmor/module-deprecated/aamatch/pcre_exec.h

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/*
* This is a modified header file containing the definitions from
* pcre.h and internal.h required to support pcre_exec()
*/
/*************************************************
* Perl-Compatible Regular Expressions *
*************************************************/
/* Copyright (c) 1997-2001 University of Cambridge */
#ifndef _PCRE_H
#define _PCRE_H
/* ----- CODE ADDED ---- */
#ifdef __KERNEL__
#include <linux/slab.h> // for kmalloc/kfree
#endif
#ifdef __KERNEL__
#define PCRE_PRINTF printk
#define isprint(x) ((unsigned char)(x) >= 128 && (unsigned char)(x) <= 255)
#else
#define PCRE_PRINTF printf
#endif
/* The value of NEWLINE determines the newline character. The default is to
* leave it up to the compiler, but some sites want to force a particular value.
* On Unix systems, "configure" can be used to override this default. */
#ifndef NEWLINE
#define NEWLINE '\n'
#endif
/* ---- CODE DELETED ---- */
/* Options */
#define PCRE_CASELESS 0x0001
#define PCRE_MULTILINE 0x0002
#define PCRE_DOTALL 0x0004
#define PCRE_EXTENDED 0x0008
#define PCRE_ANCHORED 0x0010
#define PCRE_DOLLAR_ENDONLY 0x0020
#define PCRE_EXTRA 0x0040
#define PCRE_NOTBOL 0x0080
#define PCRE_NOTEOL 0x0100
#define PCRE_UNGREEDY 0x0200
#define PCRE_NOTEMPTY 0x0400
#define PCRE_UTF8 0x0800
/* Exec-time and get-time error codes */
#define PCRE_ERROR_NOMATCH (-1)
#define PCRE_ERROR_NULL (-2)
#define PCRE_ERROR_BADOPTION (-3)
#define PCRE_ERROR_BADMAGIC (-4)
#define PCRE_ERROR_UNKNOWN_NODE (-5)
#define PCRE_ERROR_NOMEMORY (-6)
#define PCRE_ERROR_NOSUBSTRING (-7)
/* ---- CODE DELETED ---- */
/* Types */
struct real_pcre; /* declaration; the definition is private */
struct real_pcre_extra; /* declaration; the definition is private */
typedef struct real_pcre pcre;
typedef struct real_pcre_extra pcre_extra;
/* ---- CODE DELETED ---- */
extern int pcre_exec(const pcre *, const pcre_extra *,
const char *, int, int, int, int *,
int);
/* ---- CODE ADDED (from internal.h) ---- */
/* These are the public options that can change during matching. */
#define PCRE_IMS (PCRE_CASELESS|PCRE_MULTILINE|PCRE_DOTALL)
/* Private options flags start at the most significant end of the four bytes,
but skip the top bit so we can use ints for convenience without getting tangled
with negative values. The public options defined in pcre.h start at the least
significant end. Make sure they don't overlap, though now that we have expanded
to four bytes there is plenty of space. */
#define PCRE_FIRSTSET 0x40000000 /* first_char is set */
#define PCRE_REQCHSET 0x20000000 /* req_char is set */
#define PCRE_STARTLINE 0x10000000 /* start after \n for multiline */
#define PCRE_ICHANGED 0x04000000 /* i option changes within regex */
/* Options for the "extra" block produced by pcre_study(). */
#define PCRE_STUDY_MAPPED 0x01 /* a map of starting chars exists */
/* Masks for identifying the public options which are permitted at compile
time, run time or study time, respectively. */
#define PUBLIC_EXEC_OPTIONS \
(PCRE_ANCHORED|PCRE_NOTBOL|PCRE_NOTEOL|PCRE_NOTEMPTY)
/* Magic number to provide a small check against being handed junk. */
#define MAGIC_NUMBER 0x50435245UL /* 'PCRE' */
typedef int BOOL;
#define FALSE 0
#define TRUE 1
/* Opcode table: OP_BRA must be last, as all values >= it are used for brackets
that extract substrings. Starting from 1 (i.e. after OP_END), the values up to
OP_EOD must correspond in order to the list of escapes immediately above. */
enum {
OP_END, /* End of pattern */
/* Values corresponding to backslashed metacharacters */
OP_SOD, /* Start of data: \A */
OP_NOT_WORD_BOUNDARY, /* \B */
OP_WORD_BOUNDARY, /* \b */
OP_NOT_DIGIT, /* \D */
OP_DIGIT, /* \d */
OP_NOT_WHITESPACE, /* \S */
OP_WHITESPACE, /* \s */
OP_NOT_WORDCHAR, /* \W */
OP_WORDCHAR, /* \w */
OP_EODN, /* End of data or \n at end of data: \Z. */
OP_EOD, /* End of data: \z */
OP_OPT, /* Set runtime options */
OP_CIRC, /* Start of line - varies with multiline switch */
OP_DOLL, /* End of line - varies with multiline switch */
OP_ANY, /* Match any character */
OP_CHARS, /* Match string of characters */
OP_NOT, /* Match anything but the following char */
OP_STAR, /* The maximizing and minimizing versions of */
OP_MINSTAR, /* all these opcodes must come in pairs, with */
OP_PLUS, /* the minimizing one second. */
OP_MINPLUS, /* This first set applies to single characters */
OP_QUERY,
OP_MINQUERY,
OP_UPTO, /* From 0 to n matches */
OP_MINUPTO,
OP_EXACT, /* Exactly n matches */
OP_NOTSTAR, /* The maximizing and minimizing versions of */
OP_NOTMINSTAR, /* all these opcodes must come in pairs, with */
OP_NOTPLUS, /* the minimizing one second. */
OP_NOTMINPLUS, /* This first set applies to "not" single characters */
OP_NOTQUERY,
OP_NOTMINQUERY,
OP_NOTUPTO, /* From 0 to n matches */
OP_NOTMINUPTO,
OP_NOTEXACT, /* Exactly n matches */
OP_TYPESTAR, /* The maximizing and minimizing versions of */
OP_TYPEMINSTAR, /* all these opcodes must come in pairs, with */
OP_TYPEPLUS, /* the minimizing one second. These codes must */
OP_TYPEMINPLUS, /* be in exactly the same order as those above. */
OP_TYPEQUERY, /* This set applies to character types such as \d */
OP_TYPEMINQUERY,
OP_TYPEUPTO, /* From 0 to n matches */
OP_TYPEMINUPTO,
OP_TYPEEXACT, /* Exactly n matches */
OP_CRSTAR, /* The maximizing and minimizing versions of */
OP_CRMINSTAR, /* all these opcodes must come in pairs, with */
OP_CRPLUS, /* the minimizing one second. These codes must */
OP_CRMINPLUS, /* be in exactly the same order as those above. */
OP_CRQUERY, /* These are for character classes and back refs */
OP_CRMINQUERY,
OP_CRRANGE, /* These are different to the three seta above. */
OP_CRMINRANGE,
OP_CLASS, /* Match a character class */
OP_REF, /* Match a back reference */
OP_RECURSE, /* Match this pattern recursively */
OP_ALT, /* Start of alternation */
OP_KET, /* End of group that doesn't have an unbounded repeat */
OP_KETRMAX, /* These two must remain together and in this */
OP_KETRMIN, /* order. They are for groups the repeat for ever. */
/* The assertions must come before ONCE and COND */
OP_ASSERT, /* Positive lookahead */
OP_ASSERT_NOT, /* Negative lookahead */
OP_ASSERTBACK, /* Positive lookbehind */
OP_ASSERTBACK_NOT, /* Negative lookbehind */
OP_REVERSE, /* Move pointer back - used in lookbehind assertions */
/* ONCE and COND must come after the assertions, with ONCE first, as there's
a test for >= ONCE for a subpattern that isn't an assertion. */
OP_ONCE, /* Once matched, don't back up into the subpattern */
OP_COND, /* Conditional group */
OP_CREF, /* Used to hold an extraction string number (cond ref) */
OP_BRAZERO, /* These two must remain together and in this */
OP_BRAMINZERO, /* order. */
OP_BRANUMBER, /* Used for extracting brackets whose number is greater
than can fit into an opcode. */
OP_BRA /* This and greater values are used for brackets that
extract substrings up to a basic limit. After that,
use is made of OP_BRANUMBER. */
};
/* The highest extraction number before we have to start using additional
bytes. (Originally PCRE didn't have support for extraction counts highter than
this number.) The value is limited by the number of opcodes left after OP_BRA,
i.e. 255 - OP_BRA. We actually set it a bit lower to leave room for additional
opcodes. */
#define EXTRACT_BASIC_MAX 150
/* All character handling must be done as unsigned characters. Otherwise there
are problems with top-bit-set characters and functions such as isspace().
However, we leave the interface to the outside world as char *, because that
should make things easier for callers. We define a short type for unsigned char
to save lots of typing. I tried "uchar", but it causes problems on Digital
Unix, where it is defined in sys/types, so use "uschar" instead. */
typedef unsigned char uschar;
/* The real format of the start of the pcre block; the actual code vector
runs on as long as necessary after the end. */
typedef struct real_pcre {
unsigned long int magic_number;
size_t size;
const unsigned char *tables;
unsigned long int options;
unsigned short int top_bracket;
unsigned short int top_backref;
uschar first_char;
uschar req_char;
uschar code[1];
} real_pcre;
/* The real format of the extra block returned by pcre_study(). */
typedef struct real_pcre_extra {
uschar options;
uschar start_bits[32];
} real_pcre_extra;
/* Structure for passing "static" information around between the functions
doing the matching, so that they are thread-safe. */
typedef struct match_data {
int errorcode; /* As it says */
int *offset_vector; /* Offset vector */
int offset_end; /* One past the end */
int offset_max; /* The maximum usable for return data */
const uschar *lcc; /* Points to lower casing table */
const uschar *ctypes; /* Points to table of type maps */
BOOL offset_overflow; /* Set if too many extractions */
BOOL notbol; /* NOTBOL flag */
BOOL noteol; /* NOTEOL flag */
BOOL utf8; /* UTF8 flag */
BOOL endonly; /* Dollar not before final \n */
BOOL notempty; /* Empty string match not wanted */
const uschar *start_pattern; /* For use when recursing */
const uschar *start_subject; /* Start of the subject string */
const uschar *end_subject; /* End of the subject string */
const uschar *start_match; /* Start of this match attempt */
const uschar *end_match_ptr; /* Subject position at end match */
int end_offset_top; /* Highwater mark at end of match */
} match_data;
/* Bit definitions for entries in the pcre_ctypes table. */
#define ctype_space 0x01
#define ctype_letter 0x02
#define ctype_digit 0x04
#define ctype_xdigit 0x08
#define ctype_word 0x10 /* alphameric or '_' */
#define ctype_meta 0x80 /* regexp meta char or zero (end pattern) */
/* Offsets for the bitmap tables in pcre_cbits. Each table contains a set
of bits for a class map. Some classes are built by combining these tables. */
#define cbit_length 320 /* Length of the cbits table */
/* Offsets of the various tables from the base tables pointer, and
total length. */
#define lcc_offset 0
#define fcc_offset 256
#define fcc_offset 256
#define cbits_offset 512
#define ctypes_offset (cbits_offset + cbit_length)
/* ----- CODE ADDED ---- */
#endif // _PCRE_H
/* End of pcre.h */
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