FM / isc

/usr/include/bind9/isc

Name	Size	Mode	Actions
aes.h	1080	0644	edit dl rm
app.h	10478	0644	edit dl rm
assertions.h	2907	0644	edit dl rm
atomic.h	4168	0644	edit dl rm
backtrace.h	3891	0644	edit dl rm
base32.h	4453	0644	edit dl rm
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bind9.h	830	0644	edit dl rm
boolean.h	594	0644	edit dl rm
buffer.h	26268	0644	edit dl rm
bufferlist.h	1452	0644	edit dl rm
cmocka.h	1383	0644	edit dl rm
commandline.h	1713	0644	edit dl rm
condition.h	1478	0644	edit dl rm
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deprecated.h	623	0644	edit dl rm
dir.h	1598	0644	edit dl rm
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file.h	11667	0644	edit dl rm
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hmacmd5.h	1787	0644	edit dl rm
hmacsha.h	4511	0644	edit dl rm
ht.h	4396	0644	edit dl rm
httpd.h	2318	0644	edit dl rm
int.h	1088	0644	edit dl rm
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iterated_hash.h	1046	0644	edit dl rm
json.h	1459	0644	edit dl rm
keyboard.h	989	0644	edit dl rm
lang.h	637	0644	edit dl rm
lex.h	9771	0644	edit dl rm
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lib.h	1068	0644	edit dl rm
likely.h	818	0644	edit dl rm
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mutex.h	3524	0644	edit dl rm
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net.h	10534	0644	edit dl rm
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netdb.h	863	0644	edit dl rm
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offset.h	700	0644	edit dl rm
once.h	983	0644	edit dl rm
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platform.h	9717	0644	edit dl rm
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portset.h	3295	0644	edit dl rm
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queue.h	5204	0644	edit dl rm
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refcount.h	8193	0644	edit dl rm
regex.h	767	0644	edit dl rm
region.h	2034	0644	edit dl rm
resource.h	2862	0644	edit dl rm
result.h	4982	0644	edit dl rm
resultclass.h	1599	0644	edit dl rm
rwlock.h	3807	0644	edit dl rm
safe.h	1352	0644	edit dl rm
serial.h	1368	0644	edit dl rm
sha1.h	1556	0644	edit dl rm
sha2.h	5733	0644	edit dl rm
siphash.h	734	0644	edit dl rm
sockaddr.h	6039	0644	edit dl rm
socket.h	36655	0644	edit dl rm
stat.h	806	0644	edit dl rm
stats.h	3709	0644	edit dl rm
stdatomic.h	5250	0644	edit dl rm
stdio.h	1787	0644	edit dl rm
stdlib.h	704	0644	edit dl rm
stdtime.h	1065	0644	edit dl rm
strerror.h	777	0644	edit dl rm
string.h	6019	0644	edit dl rm
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types.h	5780	0644	edit dl rm
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util.h	10537	0644	edit dl rm
version.h	689	0644	edit dl rm
xml.h	1094	0644	edit dl rm

Edit: /usr/include/bind9/isc/lex.h (9771B)

/*
 * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
 *
 * This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, you can obtain one at https://mozilla.org/MPL/2.0/.
 *
 * See the COPYRIGHT file distributed with this work for additional
 * information regarding copyright ownership.
 */

#ifndef ISC_LEX_H
#define ISC_LEX_H 1

/*****
 ***** Module Info
 *****/

/*! \file isc/lex.h
 * \brief The "lex" module provides a lightweight tokenizer.  It can operate
 * on files or buffers, and can handle "include".  It is designed for
 * parsing of DNS master files and the BIND configuration file, but
 * should be general enough to tokenize other things, e.g. HTTP.
 *
 * \li MP:
 *	No synchronization is provided.  Clients must ensure exclusive
 *	access.
 *
 * \li Reliability:
 *	No anticipated impact.
 *
 * \li Resources:
 *	TBS
 *
 * \li Security:
 *	No anticipated impact.
 *
 * \li Standards:
 * 	None.
 */

/***
 *** Imports
 ***/

#include <stdbool.h>
#include <stdio.h>

#include <isc/lang.h>
#include <isc/region.h>
#include <isc/types.h>

ISC_LANG_BEGINDECLS

/***
 *** Options
 ***/

/*@{*/
/*!
 * Various options for isc_lex_gettoken().
 */

#define ISC_LEXOPT_EOL			0x01	/*%< Want end-of-line token. */
#define ISC_LEXOPT_EOF			0x02	/*%< Want end-of-file token. */
#define ISC_LEXOPT_INITIALWS		0x04	/*%< Want initial whitespace. */
#define ISC_LEXOPT_NUMBER		0x08	/*%< Recognize numbers. */
#define ISC_LEXOPT_QSTRING		0x10	/*%< Recognize qstrings. */
/*@}*/

/*@{*/
/*!
 * The ISC_LEXOPT_DNSMULTILINE option handles the processing of '(' and ')' in
 * the DNS master file format.  If this option is set, then the
 * ISC_LEXOPT_INITIALWS and ISC_LEXOPT_EOL options will be ignored when
 * the paren count is > 0.  To use this option, '(' and ')' must be special
 * characters.
 */
#define ISC_LEXOPT_DNSMULTILINE		0x20	/*%< Handle '(' and ')'. */
#define ISC_LEXOPT_NOMORE		0x40	/*%< Want "no more" token. */

#define ISC_LEXOPT_CNUMBER		0x80    /*%< Recognize octal and hex. */
#define ISC_LEXOPT_ESCAPE		0x100	/*%< Recognize escapes. */
#define ISC_LEXOPT_QSTRINGMULTILINE	0x200	/*%< Allow multiline "" strings */
#define ISC_LEXOPT_OCTAL		0x400	/*%< Expect a octal number. */
#define ISC_LEXOPT_BTEXT		0x800	/*%< Bracketed text. */
/*@}*/
/*@{*/
/*!
 * Various commenting styles, which may be changed at any time with
 * isc_lex_setcomments().
 */

#define ISC_LEXCOMMENT_C		0x01
#define ISC_LEXCOMMENT_CPLUSPLUS	0x02
#define ISC_LEXCOMMENT_SHELL		0x04
#define ISC_LEXCOMMENT_DNSMASTERFILE	0x08
/*@}*/

/***
 *** Types
 ***/

/*! Lex */

typedef char isc_lexspecials_t[256];

/* Tokens */

typedef enum {
	isc_tokentype_unknown = 0,
	isc_tokentype_string = 1,
	isc_tokentype_number = 2,
	isc_tokentype_qstring = 3,
	isc_tokentype_eol = 4,
	isc_tokentype_eof = 5,
	isc_tokentype_initialws = 6,
	isc_tokentype_special = 7,
	isc_tokentype_nomore = 8,
	isc_tokentype_btext = 8
} isc_tokentype_t;

typedef union {
	char				as_char;
	unsigned long			as_ulong;
	isc_region_t			as_region;
	isc_textregion_t		as_textregion;
	void *				as_pointer;
} isc_tokenvalue_t;

typedef struct isc_token {
	isc_tokentype_t			type;
	isc_tokenvalue_t		value;
} isc_token_t;

/***
 *** Functions
 ***/

isc_result_t
isc_lex_create(isc_mem_t *mctx, size_t max_token, isc_lex_t **lexp);
/*%<
 * Create a lexer.
 *
 * 'max_token' is a hint of the number of bytes in the largest token.
 *
 * Requires:
 *\li	'*lexp' is a valid lexer.
 *
 * Ensures:
 *\li	On success, *lexp is attached to the newly created lexer.
 *
 * Returns:
 *\li	#ISC_R_SUCCESS
 *\li	#ISC_R_NOMEMORY
 */

void
isc_lex_destroy(isc_lex_t **lexp);
/*%<
 * Destroy the lexer.
 *
 * Requires:
 *\li	'*lexp' is a valid lexer.
 *
 * Ensures:
 *\li	*lexp == NULL
 */

unsigned int
isc_lex_getcomments(isc_lex_t *lex);
/*%<
 * Return the current lexer commenting styles.
 *
 * Requires:
 *\li	'lex' is a valid lexer.
 *
 * Returns:
 *\li	The commenting styles which are currently allowed.
 */

void
isc_lex_setcomments(isc_lex_t *lex, unsigned int comments);
/*%<
 * Set allowed lexer commenting styles.
 *
 * Requires:
 *\li	'lex' is a valid lexer.
 *
 *\li	'comments' has meaningful values.
 */

void
isc_lex_getspecials(isc_lex_t *lex, isc_lexspecials_t specials);
/*%<
 * Put the current list of specials into 'specials'.
 *
 * Requires:
 *\li	'lex' is a valid lexer.
 */

void
isc_lex_setspecials(isc_lex_t *lex, isc_lexspecials_t specials);
/*!<
 * The characters in 'specials' are returned as tokens.  Along with
 * whitespace, they delimit strings and numbers.
 *
 * Note:
 *\li	Comment processing takes precedence over special character
 *	recognition.
 *
 * Requires:
 *\li	'lex' is a valid lexer.
 */

isc_result_t
isc_lex_openfile(isc_lex_t *lex, const char *filename);
/*%<
 * Open 'filename' and make it the current input source for 'lex'.
 *
 * Requires:
 *\li	'lex' is a valid lexer.
 *
 *\li	filename is a valid C string.
 *
 * Returns:
 *\li	#ISC_R_SUCCESS
 *\li	#ISC_R_NOMEMORY			Out of memory
 *\li	#ISC_R_NOTFOUND			File not found
 *\li	#ISC_R_NOPERM			No permission to open file
 *\li	#ISC_R_FAILURE			Couldn't open file, not sure why
 *\li	#ISC_R_UNEXPECTED
 */

isc_result_t
isc_lex_openstream(isc_lex_t *lex, FILE *stream);
/*%<
 * Make 'stream' the current input source for 'lex'.
 *
 * Requires:
 *\li	'lex' is a valid lexer.
 *
 *\li	'stream' is a valid C stream.
 *
 * Returns:
 *\li	#ISC_R_SUCCESS
 *\li	#ISC_R_NOMEMORY			Out of memory
 */

isc_result_t
isc_lex_openbuffer(isc_lex_t *lex, isc_buffer_t *buffer);
/*%<
 * Make 'buffer' the current input source for 'lex'.
 *
 * Requires:
 *\li	'lex' is a valid lexer.
 *
 *\li	'buffer' is a valid buffer.
 *
 * Returns:
 *\li	#ISC_R_SUCCESS
 *\li	#ISC_R_NOMEMORY			Out of memory
 */

isc_result_t
isc_lex_close(isc_lex_t *lex);
/*%<
 * Close the most recently opened object (i.e. file or buffer).
 *
 * Returns:
 *\li	#ISC_R_SUCCESS
 *\li	#ISC_R_NOMORE			No more input sources
 */

isc_result_t
isc_lex_gettoken(isc_lex_t *lex, unsigned int options, isc_token_t *tokenp);
/*%<
 * Get the next token.
 *
 * Requires:
 *\li	'lex' is a valid lexer.
 *
 *\li	'lex' has an input source.
 *
 *\li	'options' contains valid options.
 *
 *\li	'*tokenp' is a valid pointer.
 *
 * Returns:
 *\li	#ISC_R_SUCCESS
 *\li	#ISC_R_UNEXPECTEDEND
 *\li	#ISC_R_NOMEMORY
 *
 *	These two results are returned only if their corresponding lexer
 *	options are not set.
 *
 *\li	#ISC_R_EOF			End of input source
 *\li	#ISC_R_NOMORE			No more input sources
 */

isc_result_t
isc_lex_getmastertoken(isc_lex_t *lex, isc_token_t *token,
		       isc_tokentype_t expect, bool eol);
/*%<
 * Get the next token from a DNS master file type stream.  This is a
 * convenience function that sets appropriate options and handles quoted
 * strings and end of line correctly for master files.  It also ungets
 * unexpected tokens.  If `eol` is set then expect end-of-line otherwise
 * eol is a error.
 *
 * Requires:
 *\li	'lex' is a valid lexer.
 *
 *\li	'token' is a valid pointer
 *
 * Returns:
 *
 * \li	any return code from isc_lex_gettoken().
 */

isc_result_t
isc_lex_getoctaltoken(isc_lex_t *lex, isc_token_t *token, bool eol);
/*%<
 * Get the next token from a DNS master file type stream.  This is a
 * convenience function that sets appropriate options and handles end
 * of line correctly for master files.  It also ungets unexpected tokens.
 * If `eol` is set then expect end-of-line otherwise eol is a error.
 *
 * Requires:
 *\li	'lex' is a valid lexer.
 *
 *\li	'token' is a valid pointer
 *
 * Returns:
 *
 * \li	any return code from isc_lex_gettoken().
 */

void
isc_lex_ungettoken(isc_lex_t *lex, isc_token_t *tokenp);
/*%<
 * Unget the current token.
 *
 * Requires:
 *\li	'lex' is a valid lexer.
 *
 *\li	'lex' has an input source.
 *
 *\li	'tokenp' points to a valid token.
 *
 *\li	There is no ungotten token already.
 */

void
isc_lex_getlasttokentext(isc_lex_t *lex, isc_token_t *tokenp, isc_region_t *r);
/*%<
 * Returns a region containing the text of the last token returned.
 *
 * Requires:
 *\li	'lex' is a valid lexer.
 *
 *\li	'lex' has an input source.
 *
 *\li	'tokenp' points to a valid token.
 *
 *\li	A token has been gotten and not ungotten.
 */

char *
isc_lex_getsourcename(isc_lex_t *lex);
/*%<
 * Return the input source name.
 *
 * Requires:
 *\li	'lex' is a valid lexer.
 *
 * Returns:
 * \li	source name or NULL if no current source.
 *\li	result valid while current input source exists.
 */

unsigned long
isc_lex_getsourceline(isc_lex_t *lex);
/*%<
 * Return the input source line number.
 *
 * Requires:
 *\li	'lex' is a valid lexer.
 *
 * Returns:
 *\li 	Current line number or 0 if no current source.
 */

isc_result_t
isc_lex_setsourcename(isc_lex_t *lex, const char *name);
/*%<
 * Assigns a new name to the input source.
 *
 * Requires:
 *
 * \li	'lex' is a valid lexer.
 *
 * Returns:
 * \li	#ISC_R_SUCCESS
 * \li	#ISC_R_NOMEMORY
 * \li	#ISC_R_NOTFOUND - there are no sources.
 */

isc_result_t
isc_lex_setsourceline(isc_lex_t *lex, unsigned long line);
/*%<
 * Assigns a new line number to the input source. This can be used
 * when parsing a buffer that's been excerpted from the middle a file,
 * allowing logged messages to display the correct line number,
 * rather than the line number within the buffer.
 *
 * Requires:
 *
 * \li	'lex' is a valid lexer.
 *
 * Returns:
 * \li	#ISC_R_SUCCESS
 * \li	#ISC_R_NOTFOUND - there are no sources.
 */

bool
isc_lex_isfile(isc_lex_t *lex);
/*%<
 * Return whether the current input source is a file.
 *
 * Requires:
 *\li	'lex' is a valid lexer.
 *
 * Returns:
 * \li	#true if the current input is a file,
 *\li	#false otherwise.
 */

ISC_LANG_ENDDECLS

#endif /* ISC_LEX_H */

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