parser.c 101 KB
Newer Older
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17
/*
 * Copyright (C) 2000, 2001  Internet Software Consortium.
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM
 * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
 * INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
 * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
 * FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
 * NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
 * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

18
/* $Id: parser.c,v 1.95 2001/12/18 23:23:32 marka Exp $ */
19 20 21 22 23

#include <config.h>

#include <isc/buffer.h>
#include <isc/dir.h>
24
#include <isc/formatcheck.h>
25 26 27 28 29
#include <isc/lex.h>
#include <isc/log.h>
#include <isc/mem.h>
#include <isc/net.h>
#include <isc/netaddr.h>
30
#include <isc/print.h>
31 32 33 34 35 36
#include <isc/string.h>
#include <isc/sockaddr.h>
#include <isc/util.h>
#include <isc/symtab.h>

#include <isccfg/cfg.h>
37
#include <isccfg/log.h>
38

39
/* Shorthand */
40 41
#define CAT CFG_LOGCATEGORY_CONFIG
#define MOD CFG_LOGMODULE_PARSER
42

43 44
#define QSTRING (ISC_LEXOPT_QSTRING | ISC_LEXOPT_QSTRINGMULTILINE)

45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62
/*
 * Pass one of these flags to parser_error() to include the
 * token text in log message.
 */
#define LOG_NEAR    0x00000001	/* Say "near <token>" */
#define LOG_BEFORE  0x00000002	/* Say "before <token>" */
#define LOG_NOPREP  0x00000004	/* Say just "<token>" */

#define MAP_SYM 1 	/* Unique type for isc_symtab */

/* Clause may occur multiple times (e.g., "zone") */
#define CFG_CLAUSEFLAG_MULTI 		0x00000001
/* Clause is obsolete */
#define CFG_CLAUSEFLAG_OBSOLETE 	0x00000002
/* Clause is not implemented, and may never be */
#define CFG_CLAUSEFLAG_NOTIMP	 	0x00000004
/* Clause is not implemented yet */
#define CFG_CLAUSEFLAG_NYI 		0x00000008
63
/* Default value has changed since earlier release */
64
#define CFG_CLAUSEFLAG_NEWDEFAULT	0x00000010
65 66 67 68 69
/*
 * Clause needs to be interpreted during parsing
 * by calling a callback function, like the
 * "directory" option.
 */
70
#define CFG_CLAUSEFLAG_CALLBACK		0x00000020
71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91

/*
 * Flags defining whether to accept certain types of network addresses.
 */
#define V4OK 		0x00000001
#define V4PREFIXOK 	0x00000002
#define V6OK 		0x00000004
#define WILDOK		0x00000008

/* Check a return value. */
#define CHECK(op) 						\
     	do { result = (op); 					\
		if (result != ISC_R_SUCCESS) goto cleanup; 	\
	} while (0)

/* Clean up a configuration object if non-NULL. */
#define CLEANUP_OBJ(obj) \
	do { if ((obj) != NULL) cfg_obj_destroy(pctx, &(obj)); } while (0)


typedef struct cfg_clausedef cfg_clausedef_t;
92
typedef struct cfg_tuplefielddef cfg_tuplefielddef_t;
93 94 95 96 97 98 99 100 101
typedef struct cfg_printer cfg_printer_t;
typedef ISC_LIST(cfg_listelt_t) cfg_list_t;
typedef struct cfg_map cfg_map_t;
typedef struct cfg_rep cfg_rep_t;

/*
 * Function types for configuration object methods
 */

102
typedef isc_result_t (*cfg_parsefunc_t)(cfg_parser_t *, const cfg_type_t *type,
103 104 105 106
					cfg_obj_t **);
typedef void	     (*cfg_printfunc_t)(cfg_printer_t *, cfg_obj_t *);
typedef void	     (*cfg_freefunc_t)(cfg_parser_t *, cfg_obj_t *);

107

108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127
/*
 * Structure definitions
 */

/* The parser object. */
struct cfg_parser {
	isc_mem_t *	mctx;
	isc_log_t *	lctx;
	isc_lex_t *	lexer;
	unsigned int    errors;
	unsigned int    warnings;
	isc_token_t     token;

	/* We are at the end of all input. */
	isc_boolean_t	seen_eof;

	/* The current token has been pushed back. */
	isc_boolean_t	ungotten;

	/*
128 129 130 131 132
	 * The stack of currently active files, represented
	 * as a configuration list of configuration strings.
	 * The head is the top-level file, subsequent elements 
	 * (if any) are the nested include files, and the 
	 * last element is the file currently being parsed.
133
	 */
134 135 136 137 138 139 140 141 142 143 144 145
	cfg_obj_t *	open_files;

	/*
	 * Names of files that we have parsed and closed
	 * and were previously on the open_file list.
	 * We keep these objects around after closing
	 * the files because the file names may still be
	 * referenced from other configuration objects
	 * for use in reporting semantic errors after
	 * parsing is complete.
	 */
	cfg_obj_t *	closed_files;
146 147 148 149 150 151 152

	/*
	 * Current line number.  We maintain our own
	 * copy of this so that it is available even
	 * when a file has just been closed.
	 */
	unsigned int	line;
153 154 155

	cfg_parsecallback_t callback;
	void *callbackarg;
156 157
};

158 159 160 161 162
/*
 * A configuration printer object.  This is an abstract
 * interface to a destination to which text can be printed
 * by calling the function 'f'.
 */
163 164 165 166 167 168 169 170 171 172 173 174 175 176
struct cfg_printer {
	void (*f)(void *closure, const char *text, int textlen);
	void *closure;
	int indent;
};

/* A clause definition. */

struct cfg_clausedef {
	const char      *name;
	cfg_type_t      *type;
	unsigned int	flags;
};

177 178 179 180 181 182 183 184
/* A tuple field definition. */

struct cfg_tuplefielddef {
	const char      *name;
	cfg_type_t      *type;
	unsigned int	flags;
};

185 186 187 188 189 190
/* A configuration object type definition. */
struct cfg_type {
	const char *name;	/* For debugging purposes only */
	cfg_parsefunc_t  parse;
	cfg_printfunc_t  print;
	cfg_rep_t *	 rep;	/* Data representation */
191
	const void *	 of;	/* For meta-types */
192 193 194
};

/* A keyword-type definition, for things like "port <integer>". */
195

196 197
typedef struct {
	const char *name;
198
	const cfg_type_t *type;
199 200 201 202
} keyword_type_t;

struct cfg_map {
	cfg_obj_t	 *id; /* Used for 'named maps' like keys, zones, &c */
203 204 205
	const cfg_clausedef_t * const *clausesets; /* The clauses that
						      can occur in this map;
						      used for printing */
206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229
	isc_symtab_t     *symtab;
};

typedef struct cfg_netprefix cfg_netprefix_t;

struct cfg_netprefix {
	isc_netaddr_t address; /* IP4/IP6 */
	unsigned int prefixlen;
};

/*
 * A configuration data representation.
 */
struct cfg_rep {
	const char *	name;	/* For debugging only */
	cfg_freefunc_t 	free;	/* How to free this kind of data. */
};

/*
 * A configuration object.  This is the main building block
 * of the configuration parse tree.
 */

struct cfg_obj {
230
	const cfg_type_t *type;
231 232
	union {
		isc_uint32_t  	uint32;
233
		isc_uint64_t  	uint64;
234
		isc_textregion_t string; /* null terminated, too */
235 236 237 238 239 240 241 242 243 244 245 246 247
		isc_boolean_t 	boolean;
		cfg_map_t	map;
		cfg_list_t	list;
		cfg_obj_t **	tuple;
		isc_sockaddr_t	sockaddr;
		cfg_netprefix_t netprefix;
	}               value;
	char *		file;
	unsigned int    line;
};


/* A list element. */
248

249 250 251 252 253 254 255 256 257 258
struct cfg_listelt {
	cfg_obj_t               *obj;
	ISC_LINK(cfg_listelt_t)  link;
};

/*
 * Forward declarations of static functions.
 */

static isc_result_t
259
create_cfgobj(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **objp);
260 261

static isc_result_t
262
create_list(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **objp);
263 264 265 266 267 268 269 270

static isc_result_t
create_listelt(cfg_parser_t *pctx, cfg_listelt_t **eltp);

static void
free_list(cfg_parser_t *pctx, cfg_obj_t *obj);

static isc_result_t
271
create_string(cfg_parser_t *pctx, const char *contents, const cfg_type_t *type,
272 273
	      cfg_obj_t **ret);

274 275 276
static isc_result_t
parse_qstring(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret);

277 278 279 280
static void
free_string(cfg_parser_t *pctx, cfg_obj_t *obj);

static isc_result_t
281
create_map(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **objp);
282

283
static isc_result_t
284
create_tuple(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **objp);
285

286 287 288 289 290 291 292 293 294
static void
free_map(cfg_parser_t *pctx, cfg_obj_t *obj);

static isc_result_t
get_addr(cfg_parser_t *pctx, unsigned int flags, isc_netaddr_t *na);

static void
print(cfg_printer_t *pctx, const char *text, int len);

295 296 297
static void
print_void(cfg_printer_t *pctx, cfg_obj_t *obj);

298
static isc_result_t
299 300
parse_enum_or_other(cfg_parser_t *pctx, const cfg_type_t *enumtype,
		    const cfg_type_t *othertype, cfg_obj_t **ret);
301

302
static isc_result_t
303
parse_mapbody(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret);
304 305 306 307 308

static void
print_mapbody(cfg_printer_t *pctx, cfg_obj_t *obj);

static isc_result_t
309
parse_map(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret);
310 311 312 313 314

static void
print_map(cfg_printer_t *pctx, cfg_obj_t *obj);

static isc_result_t
315
parse_named_map(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret);
316

317
static isc_result_t
318
parse_addressed_map(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret);
319

320
static isc_result_t
321
parse_list(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret);
322 323 324 325 326

static void
print_list(cfg_printer_t *pctx, cfg_obj_t *obj);

static isc_result_t
327
parse_tuple(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret);
328 329 330 331 332 333 334 335

static void
print_tuple(cfg_printer_t *pctx, cfg_obj_t *obj);

static void
free_tuple(cfg_parser_t *pctx, cfg_obj_t *obj);

static isc_result_t
336
parse_spacelist(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret);
337 338 339 340

static void
print_spacelist(cfg_printer_t *pctx, cfg_obj_t *obj);

341 342 343
static void
print_sockaddr(cfg_printer_t *pctx, cfg_obj_t *obj);

344
static isc_result_t
345
parse_addrmatchelt(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret);
346 347

static isc_result_t
348
parse_bracketed_list(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret);
349 350 351 352

static void
print_bracketed_list(cfg_printer_t *pctx, cfg_obj_t *obj);

353
static isc_result_t
354
parse_keyvalue(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret);
355

356
static isc_result_t
357
parse_optional_keyvalue(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret);
358 359

static void
360
print_keyvalue(cfg_printer_t *pctx, cfg_obj_t *obj);
361 362 363

static isc_result_t
parse_symtab_elt(cfg_parser_t *pctx, const char *name,
364 365
		 cfg_type_t *elttype, isc_symtab_t *symtab,
		 isc_boolean_t callback);
366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383

static void
free_noop(cfg_parser_t *pctx, cfg_obj_t *obj);

static isc_result_t
cfg_gettoken(cfg_parser_t *pctx, int options);

static void
cfg_ungettoken(cfg_parser_t *pctx);

static isc_result_t
cfg_peektoken(cfg_parser_t *pctx, int options);

static isc_result_t
cfg_getstringtoken(cfg_parser_t *pctx);

static void
parser_error(cfg_parser_t *pctx, unsigned int flags,
384 385
	     const char *fmt, ...) ISC_FORMAT_PRINTF(3, 4);

386 387
static void
parser_warning(cfg_parser_t *pctx, unsigned int flags,
388 389
	       const char *fmt, ...) ISC_FORMAT_PRINTF(3, 4);

390 391 392 393 394 395 396
static void
parser_complain(cfg_parser_t *pctx, isc_boolean_t is_warning,
		unsigned int flags, const char *format, va_list args);

static void
print_uint32(cfg_printer_t *pctx, cfg_obj_t *obj);

Andreas Gustafsson's avatar
Andreas Gustafsson committed
397 398 399 400
static void
print_ustring(cfg_printer_t *pctx, cfg_obj_t *obj);

static isc_result_t
401
parse_enum(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret);
Andreas Gustafsson's avatar
Andreas Gustafsson committed
402

403 404 405 406 407
/*
 * Data representations.  These correspond to members of the
 * "value" union in struct cfg_obj (except "void", which does
 * not need a union member).
 */
408

409
cfg_rep_t cfg_rep_uint32 = { "uint32", free_noop };
410
cfg_rep_t cfg_rep_uint64 = { "uint64", free_noop };
411 412 413 414 415 416 417 418 419 420 421
cfg_rep_t cfg_rep_string = { "string", free_string };
cfg_rep_t cfg_rep_boolean = { "boolean", free_noop };
cfg_rep_t cfg_rep_map = { "map", free_map };
cfg_rep_t cfg_rep_list = { "list", free_list };
cfg_rep_t cfg_rep_tuple = { "tuple", free_tuple };
cfg_rep_t cfg_rep_sockaddr = { "sockaddr", free_noop };
cfg_rep_t cfg_rep_netprefix = { "netprefix", free_noop };
cfg_rep_t cfg_rep_void = { "void", free_noop };

/*
 * Forward declarations of configuration type definitions.
422
 * Additional types are declared publicly in cfg.h.
423 424
 */

425 426 427 428 429 430 431 432 433 434 435
static cfg_type_t cfg_type_boolean;
static cfg_type_t cfg_type_uint32;
static cfg_type_t cfg_type_qstring;
static cfg_type_t cfg_type_astring;
static cfg_type_t cfg_type_ustring;
static cfg_type_t cfg_type_optional_port;
static cfg_type_t cfg_type_bracketed_aml;
static cfg_type_t cfg_type_acl;
static cfg_type_t cfg_type_portiplist;
static cfg_type_t cfg_type_bracketed_sockaddrlist;
static cfg_type_t cfg_type_sockaddr;
436
static cfg_type_t cfg_type_netaddr;
437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459
static cfg_type_t cfg_type_optional_keyref;
static cfg_type_t cfg_type_options;
static cfg_type_t cfg_type_view;
static cfg_type_t cfg_type_viewopts;
static cfg_type_t cfg_type_key;
static cfg_type_t cfg_type_server;
static cfg_type_t cfg_type_controls;
static cfg_type_t cfg_type_bracketed_sockaddrkeylist;
static cfg_type_t cfg_type_querysource4;
static cfg_type_t cfg_type_querysource6;
static cfg_type_t cfg_type_querysource;
static cfg_type_t cfg_type_sockaddr4wild;
static cfg_type_t cfg_type_sockaddr6wild;
static cfg_type_t cfg_type_sockaddr;
static cfg_type_t cfg_type_netprefix;
static cfg_type_t cfg_type_zone;
static cfg_type_t cfg_type_zoneopts;
static cfg_type_t cfg_type_logging;
static cfg_type_t cfg_type_optional_facility;
static cfg_type_t cfg_type_void;
static cfg_type_t cfg_type_optional_class;
static cfg_type_t cfg_type_destinationlist;
static cfg_type_t cfg_type_size;
460
static cfg_type_t cfg_type_sizenodefault;
461 462 463 464 465 466 467
static cfg_type_t cfg_type_negated;
static cfg_type_t cfg_type_addrmatchelt;
static cfg_type_t cfg_type_unsupported;
static cfg_type_t cfg_type_token;
static cfg_type_t cfg_type_server_key_kludge;
static cfg_type_t cfg_type_optional_facility;
static cfg_type_t cfg_type_logseverity;
468
static cfg_type_t cfg_type_logfile;
469
static cfg_type_t cfg_type_lwres;
470
static cfg_type_t cfg_type_controls_sockaddr;
Andreas Gustafsson's avatar
Andreas Gustafsson committed
471 472
static cfg_type_t cfg_type_notifytype;
static cfg_type_t cfg_type_dialuptype;
473 474 475 476 477 478 479

/*
 * Configuration type definitions.
 */

/* tkey-dhkey */

480 481 482 483
static cfg_tuplefielddef_t tkey_dhkey_fields[] = {
	{ "name", &cfg_type_qstring, 0 },
	{ "keyid", &cfg_type_uint32, 0 },
	{ NULL, NULL, 0 }
484 485 486 487 488 489 490 491 492
};

static cfg_type_t cfg_type_tkey_dhkey = {
	"tkey-dhkey", parse_tuple, print_tuple, &cfg_rep_tuple,
	tkey_dhkey_fields
};

/* listen-on */

493 494 495 496
static cfg_tuplefielddef_t listenon_fields[] = {
	{ "port", &cfg_type_optional_port, 0 },
	{ "acl", &cfg_type_bracketed_aml, 0 },
	{ NULL, NULL, 0 }
497 498 499 500 501 502
};
static cfg_type_t cfg_type_listenon = {
	"listenon", parse_tuple, print_tuple, &cfg_rep_tuple, listenon_fields };

/* acl */

503 504 505 506
static cfg_tuplefielddef_t acl_fields[] = {
	{ "name", &cfg_type_astring, 0 },
	{ "value", &cfg_type_bracketed_aml, 0 },
	{ NULL, NULL, 0 }
507 508 509 510 511 512 513 514 515 516 517 518 519
};

static cfg_type_t cfg_type_acl = {
	"acl", parse_tuple, print_tuple, &cfg_rep_tuple, acl_fields };


/*
 * "sockaddrkeylist", a list of socket addresses with optional keys
 * and an optional default port, as used in the masters option.
 * E.g.,
 *   "port 1234 { 10.0.0.1 key foo; 1::2 port 69; }"
 */

520 521 522 523
static cfg_tuplefielddef_t sockaddrkey_fields[] = {
	{ "sockaddr", &cfg_type_sockaddr, 0 },
	{ "key", &cfg_type_optional_keyref, 0 },
	{ NULL, NULL, 0 },
524 525 526 527 528 529 530 531 532 533 534 535
};

static cfg_type_t cfg_type_sockaddrkey = {
	"sockaddrkey", parse_tuple, print_tuple, &cfg_rep_tuple,
	sockaddrkey_fields
};

static cfg_type_t cfg_type_bracketed_sockaddrkeylist = {
	"bracketed_sockaddrkeylist", parse_bracketed_list,
	print_bracketed_list, &cfg_rep_list, &cfg_type_sockaddrkey
};

536 537 538 539
static cfg_tuplefielddef_t sockaddrkeylist_fields[] = {
	{ "port", &cfg_type_optional_port, 0 },
	{ "addresses", &cfg_type_bracketed_sockaddrkeylist, 0 },
	{ NULL, NULL, 0 }
540 541 542 543 544 545 546 547 548 549 550
};
static cfg_type_t cfg_type_sockaddrkeylist = {
	"sockaddrkeylist", parse_tuple, print_tuple, &cfg_rep_tuple,
	sockaddrkeylist_fields
};

/*
 * A list of socket addresses with an optional default port,
 * as used in the also-notify option.  E.g.,
 * "port 1234 { 10.0.0.1; 1::2 port 69; }"
 */
551 552 553 554
static cfg_tuplefielddef_t portiplist_fields[] = {
	{ "port", &cfg_type_optional_port, 0 },
	{ "addresses", &cfg_type_bracketed_sockaddrlist, 0 },
	{ NULL, NULL, 0 }
555 556 557 558 559 560 561 562 563
};
static cfg_type_t cfg_type_portiplist = {
	"portiplist", parse_tuple, print_tuple, &cfg_rep_tuple,
	portiplist_fields
};

/*
 * A public key, as in the "pubkey" statement.
 */
564 565 566 567 568 569
static cfg_tuplefielddef_t pubkey_fields[] = {
	{ "flags", &cfg_type_uint32, 0 },
	{ "protocol", &cfg_type_uint32, 0 },
	{ "algorithm", &cfg_type_uint32, 0 },
	{ "key", &cfg_type_qstring, 0 },
	{ NULL, NULL, 0 }
570 571 572 573 574 575 576 577 578 579 580 581 582 583
};
static cfg_type_t cfg_type_pubkey = {
	"pubkey", parse_tuple, print_tuple, &cfg_rep_tuple, pubkey_fields };


/*
 * A list of RR types, used in grant statements.
 * Note that the old parser allows quotes around the RR type names.
 */
static cfg_type_t cfg_type_rrtypelist = {
	"rrtypelist", parse_spacelist, print_spacelist, &cfg_rep_list,
	&cfg_type_astring
};

584
static const char *mode_enums[] = { "grant", "deny", NULL };
Andreas Gustafsson's avatar
Andreas Gustafsson committed
585 586 587 588 589
static cfg_type_t cfg_type_mode = {
	"mode", parse_enum, print_ustring, &cfg_rep_string,
	&mode_enums
};

590
static const char *matchtype_enums[] = {
Andreas Gustafsson's avatar
Andreas Gustafsson committed
591 592 593 594 595 596
	"name", "subdomain", "wildcard", "self", NULL };
static cfg_type_t cfg_type_matchtype = {
	"matchtype", parse_enum, print_ustring, &cfg_rep_string,
	&matchtype_enums
};

597 598 599
/*
 * A grant statement, used in the update policy.
 */
600
static cfg_tuplefielddef_t grant_fields[] = {
Andreas Gustafsson's avatar
Andreas Gustafsson committed
601
	{ "mode", &cfg_type_mode, 0 },
602
	{ "identity", &cfg_type_astring, 0 }, /* domain name */ 
Andreas Gustafsson's avatar
Andreas Gustafsson committed
603
	{ "matchtype", &cfg_type_matchtype, 0 },
604 605 606
	{ "name", &cfg_type_astring, 0 }, /* domain name */
	{ "types", &cfg_type_rrtypelist, 0 },
	{ NULL, NULL, 0 }
607 608 609 610 611
};
static cfg_type_t cfg_type_grant = {
	"grant", parse_tuple, print_tuple, &cfg_rep_tuple, grant_fields };

static cfg_type_t cfg_type_updatepolicy = {
612
	"update_policy", parse_bracketed_list, print_bracketed_list,
613 614 615 616 617 618
	&cfg_rep_list, &cfg_type_grant
};

/*
 * A view statement.
 */
619 620 621 622 623
static cfg_tuplefielddef_t view_fields[] = {
	{ "name", &cfg_type_astring, 0 },
	{ "class", &cfg_type_optional_class, 0 },
	{ "options", &cfg_type_viewopts, 0 },
	{ NULL, NULL, 0 }
624 625 626 627 628 629 630
};
static cfg_type_t cfg_type_view = {
	"view", parse_tuple, print_tuple, &cfg_rep_tuple, view_fields };

/*
 * A zone statement.
 */
631 632 633 634 635
static cfg_tuplefielddef_t zone_fields[] = {
	{ "name", &cfg_type_astring, 0 },
	{ "class", &cfg_type_optional_class, 0 },
	{ "options", &cfg_type_zoneopts, 0 },
	{ NULL, NULL, 0 }
636 637 638 639 640 641 642
};
static cfg_type_t cfg_type_zone = {
	"zone", parse_tuple, print_tuple, &cfg_rep_tuple, zone_fields };

/*
 * A "category" clause in the "logging" statement.
 */
643 644 645 646
static cfg_tuplefielddef_t category_fields[] = {
	{ "name", &cfg_type_astring, 0 },
	{ "destinations", &cfg_type_destinationlist,0 },
	{ NULL, NULL, 0 }
647 648 649 650 651 652 653 654
};
static cfg_type_t cfg_type_category = {
	"category", parse_tuple, print_tuple, &cfg_rep_tuple, category_fields };


/*
 * A trusted key, as used in the "trusted-keys" statement.
 */
655 656 657 658 659 660 661
static cfg_tuplefielddef_t trustedkey_fields[] = {
	{ "name", &cfg_type_astring, 0 },
	{ "flags", &cfg_type_uint32, 0 },
	{ "protocol", &cfg_type_uint32, 0 },
	{ "algorithm", &cfg_type_uint32, 0 },
	{ "key", &cfg_type_qstring, 0 },
	{ NULL, NULL, 0 }
662 663 664 665 666 667 668 669 670 671 672
};
static cfg_type_t cfg_type_trustedkey = {
	"trustedkey", parse_tuple, print_tuple, &cfg_rep_tuple,
	trustedkey_fields
};


static keyword_type_t wild_class_kw = { "class", &cfg_type_ustring };

static cfg_type_t cfg_type_optional_wild_class = {
	"optional_wild_class", parse_optional_keyvalue,
673
	print_keyvalue, &cfg_rep_string, &wild_class_kw
674 675 676 677 678 679
};

static keyword_type_t wild_type_kw = { "type", &cfg_type_ustring };

static cfg_type_t cfg_type_optional_wild_type = {
	"optional_wild_type", parse_optional_keyvalue,
680
	print_keyvalue, &cfg_rep_string, &wild_type_kw
681 682 683 684 685 686
};

static keyword_type_t wild_name_kw = { "name", &cfg_type_qstring };

static cfg_type_t cfg_type_optional_wild_name = {
	"optional_wild_name", parse_optional_keyvalue,
687
	print_keyvalue, &cfg_rep_string, &wild_name_kw
688 689 690 691 692
};

/*
 * An rrset ordering element.
 */
693 694 695 696 697 698 699
static cfg_tuplefielddef_t rrsetorderingelement_fields[] = {
	{ "class", &cfg_type_optional_wild_class, 0 },
	{ "type", &cfg_type_optional_wild_type, 0 },
	{ "name", &cfg_type_optional_wild_name, 0 },
	{ "order", &cfg_type_ustring, 0 }, /* must be literal "order" */ 
	{ "ordering", &cfg_type_ustring, 0 },
	{ NULL, NULL, 0 }
700 701 702 703 704 705 706 707 708 709
};
static cfg_type_t cfg_type_rrsetorderingelement = {
	"rrsetorderingelement", parse_tuple, print_tuple, &cfg_rep_tuple,
	rrsetorderingelement_fields
};

/*
 * A global or view "check-names" option.  Note that the zone
 * "check-names" option has a different syntax.
 */
710 711 712 713
static cfg_tuplefielddef_t checknames_fields[] = {
	{ "type", &cfg_type_ustring, 0 },
	{ "mode", &cfg_type_ustring, 0 },
	{ NULL, NULL, 0 }
714 715 716 717 718 719 720 721 722 723 724 725
};
static cfg_type_t cfg_type_checknames = {
	"checknames", parse_tuple, print_tuple, &cfg_rep_tuple,
	checknames_fields
};

static cfg_type_t cfg_type_bracketed_sockaddrlist = {
	"bracketed_sockaddrlist", parse_bracketed_list, print_bracketed_list,
	&cfg_rep_list, &cfg_type_sockaddr
};

static cfg_type_t cfg_type_rrsetorder = {
726 727
	"rrsetorder", parse_bracketed_list, print_bracketed_list,
	&cfg_rep_list, &cfg_type_rrsetorderingelement
728 729 730 731 732
};

static keyword_type_t port_kw = { "port", &cfg_type_uint32 };

static cfg_type_t cfg_type_optional_port = {
733
	"optional_port", parse_optional_keyvalue, print_keyvalue,
734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753
	&cfg_rep_uint32, &port_kw
};

/* A list of keys, as in the "key" clause of the controls statement. */
static cfg_type_t cfg_type_keylist = {
	"keylist", parse_bracketed_list, print_bracketed_list, &cfg_rep_list,
	&cfg_type_astring
};

static cfg_type_t cfg_type_trustedkeys = {
	"trusted-keys", parse_bracketed_list, print_bracketed_list, &cfg_rep_list,
	&cfg_type_trustedkey
};

/*
 * An implicit list.  These are formed by clauses that occur multiple times.
 */
static cfg_type_t cfg_type_implicitlist = {
	"implicitlist", NULL, print_list, &cfg_rep_list, NULL };

754
static const char *forwardtype_enums[] = { "first", "only", NULL };
Andreas Gustafsson's avatar
Andreas Gustafsson committed
755 756 757 758 759
static cfg_type_t cfg_type_forwardtype = {
	"forwardtype", parse_enum, print_ustring, &cfg_rep_string,
	&forwardtype_enums
};

760
static const char *zonetype_enums[] = {
Andreas Gustafsson's avatar
Andreas Gustafsson committed
761 762 763 764 765 766
	"master", "slave", "stub", "hint", "forward", NULL };
static cfg_type_t cfg_type_zonetype = {
	"zonetype", parse_enum, print_ustring, &cfg_rep_string,
	&zonetype_enums
};

767
static const char *loglevel_enums[] = {
Andreas Gustafsson's avatar
Andreas Gustafsson committed
768 769 770 771 772 773
	"critical", "error", "warning", "notice", "info", "dynamic", NULL };
static cfg_type_t cfg_type_loglevel = {
	"loglevel", parse_enum, print_ustring, &cfg_rep_string,
	&loglevel_enums
};

774 775
static const char *transferformat_enums[] = {
	"many-answers", "one-answer", NULL };
Andreas Gustafsson's avatar
Andreas Gustafsson committed
776 777 778 779 780
static cfg_type_t cfg_type_transferformat = {
	"transferformat", parse_enum, print_ustring, &cfg_rep_string,
	&transferformat_enums
};

781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815
/*
 * The special keyword "none", as used in the pid-file option.
 */

static void
print_none(cfg_printer_t *pctx, cfg_obj_t *obj) {
	UNUSED(obj);
	print(pctx, "none", 4);
}

static cfg_type_t cfg_type_none = {
	"none", NULL, print_none, &cfg_rep_void, NULL
};

/*
 * A quoted string or the special keyword "none".  Used in the pid-file option.
 */
static isc_result_t
parse_qstringornone(cfg_parser_t *pctx, const cfg_type_t *type,
		    cfg_obj_t **ret)
{
	isc_result_t result;
	CHECK(cfg_gettoken(pctx, QSTRING));
	if (pctx->token.type == isc_tokentype_string &&
	    strcasecmp(pctx->token.value.as_pointer, "none") == 0)
		return (create_cfgobj(pctx, &cfg_type_none, ret));
	cfg_ungettoken(pctx);
	return (parse_qstring(pctx, type, ret));
 cleanup:
	return (result);
}

static cfg_type_t cfg_type_qstringornone = {
	"qstringornone", parse_qstringornone, NULL, NULL, NULL };

816 817 818 819 820 821 822 823 824 825 826
/*
 * Clauses that can be found within the top level of the named.conf
 * file only.
 */
static cfg_clausedef_t
namedconf_clauses[] = {
	{ "options", &cfg_type_options, 0 },
	{ "controls", &cfg_type_controls, CFG_CLAUSEFLAG_MULTI },
	{ "acl", &cfg_type_acl, CFG_CLAUSEFLAG_MULTI },
	{ "logging", &cfg_type_logging, 0 },
	{ "view", &cfg_type_view, CFG_CLAUSEFLAG_MULTI },
827
	{ "lwres", &cfg_type_lwres, CFG_CLAUSEFLAG_MULTI },
828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852
	{ NULL, NULL, 0 }
};

/*
 * Clauses that can occur at the top level or in the view
 * statement, but not in the options block.
 */
static cfg_clausedef_t
namedconf_or_view_clauses[] = {
	{ "key", &cfg_type_key, CFG_CLAUSEFLAG_MULTI },
	{ "zone", &cfg_type_zone, CFG_CLAUSEFLAG_MULTI },
	{ "server", &cfg_type_server, CFG_CLAUSEFLAG_MULTI },
	{ "trusted-keys", &cfg_type_trustedkeys, CFG_CLAUSEFLAG_MULTI },
	{ NULL, NULL, 0 }
};

/*
 * Clauses that can be found within the 'options' statement.
 */
static cfg_clausedef_t
options_clauses[] = {
	{ "blackhole", &cfg_type_bracketed_aml, 0 },
	{ "coresize", &cfg_type_size, 0 },
	{ "datasize", &cfg_type_size, 0 },
	{ "deallocate-on-exit", &cfg_type_boolean, CFG_CLAUSEFLAG_OBSOLETE },
853
	{ "directory", &cfg_type_qstring, CFG_CLAUSEFLAG_CALLBACK },
854 855 856 857 858
	{ "dump-file", &cfg_type_qstring, 0 },
	{ "fake-iquery", &cfg_type_boolean, CFG_CLAUSEFLAG_OBSOLETE },
	{ "files", &cfg_type_size, 0 },
	{ "has-old-clients", &cfg_type_boolean, CFG_CLAUSEFLAG_OBSOLETE },
	{ "heartbeat-interval", &cfg_type_uint32, 0 },
859
	{ "host-statistics", &cfg_type_boolean, CFG_CLAUSEFLAG_NOTIMP },
860
	{ "hostname", &cfg_type_qstringornone, 0 },
861 862 863
	{ "interface-interval", &cfg_type_uint32, 0 },
	{ "listen-on", &cfg_type_listenon, CFG_CLAUSEFLAG_MULTI },
	{ "listen-on-v6", &cfg_type_listenon, CFG_CLAUSEFLAG_MULTI },
864
	{ "match-mapped-addresses", &cfg_type_boolean, 0 },
865
	{ "max-journal-size", &cfg_type_sizenodefault, 0 },
866 867 868
	{ "memstatistics-file", &cfg_type_qstring, 0 },
	{ "multiple-cnames", &cfg_type_boolean, CFG_CLAUSEFLAG_OBSOLETE },
	{ "named-xfer", &cfg_type_qstring, CFG_CLAUSEFLAG_OBSOLETE },
869
	{ "pid-file", &cfg_type_qstringornone, 0 },
870 871 872
	{ "port", &cfg_type_uint32, 0 },
	{ "random-device", &cfg_type_qstring, 0 },
	{ "recursive-clients", &cfg_type_uint32, 0 },
873
	{ "rrset-order", &cfg_type_rrsetorder, CFG_CLAUSEFLAG_NOTIMP },
874
	{ "serial-queries", &cfg_type_uint32, CFG_CLAUSEFLAG_OBSOLETE },
875
	{ "serial-query-rate", &cfg_type_uint32, 0 },
876 877 878 879 880 881 882 883 884 885 886 887 888
	{ "stacksize", &cfg_type_size, 0 },
	{ "statistics-file", &cfg_type_qstring, 0 },
	{ "statistics-interval", &cfg_type_uint32, CFG_CLAUSEFLAG_NYI },
	{ "tcp-clients", &cfg_type_uint32, 0 },
	{ "tkey-dhkey", &cfg_type_tkey_dhkey, 0 },
	{ "tkey-gssapi-credential", &cfg_type_qstring, 0 },
	{ "tkey-domain", &cfg_type_qstring, 0 },
	{ "transfers-per-ns", &cfg_type_uint32, 0 },
	{ "transfers-in", &cfg_type_uint32, 0 },
	{ "transfers-out", &cfg_type_uint32, 0 },
	{ "treat-cr-as-space", &cfg_type_boolean, CFG_CLAUSEFLAG_OBSOLETE },
	{ "use-id-pool", &cfg_type_boolean, CFG_CLAUSEFLAG_OBSOLETE },
	{ "use-ixfr", &cfg_type_boolean, 0 },
889
	{ "version", &cfg_type_qstringornone, 0 },
890 891 892 893 894 895 896 897 898 899 900 901 902 903 904
	{ NULL, NULL, 0 }
};

/*
 * Clauses that can be found within the 'view' statement,
 * with defaults in the 'options' statement.
 */

static cfg_clausedef_t
view_clauses[] = {
	{ "allow-recursion", &cfg_type_bracketed_aml, 0 },
	{ "allow-v6-synthesis", &cfg_type_bracketed_aml, 0 },
	{ "sortlist", &cfg_type_bracketed_aml, 0 },
	{ "topology", &cfg_type_bracketed_aml, CFG_CLAUSEFLAG_NOTIMP },
	{ "auth-nxdomain", &cfg_type_boolean, CFG_CLAUSEFLAG_NEWDEFAULT },
Bob Halley's avatar
Bob Halley committed
905
	{ "minimal-responses", &cfg_type_boolean, 0 },
906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923
	{ "recursion", &cfg_type_boolean, 0 },
	{ "provide-ixfr", &cfg_type_boolean, 0 },
	{ "request-ixfr", &cfg_type_boolean, 0 },
	{ "fetch-glue", &cfg_type_boolean, CFG_CLAUSEFLAG_OBSOLETE },
	{ "rfc2308-type1", &cfg_type_boolean, CFG_CLAUSEFLAG_NYI },
	{ "additional-from-auth", &cfg_type_boolean, 0 },
	{ "additional-from-cache", &cfg_type_boolean, 0 },
	/*
	 * Note that the query-source option syntax is different
	 * from the other -source options.
	 */
	{ "query-source", &cfg_type_querysource4, 0 },
	{ "query-source-v6", &cfg_type_querysource6, 0 },
	{ "cleaning-interval", &cfg_type_uint32, 0 },
	{ "min-roots", &cfg_type_uint32, CFG_CLAUSEFLAG_NOTIMP },
	{ "lame-ttl", &cfg_type_uint32, 0 },
	{ "max-ncache-ttl", &cfg_type_uint32, 0 },
	{ "max-cache-ttl", &cfg_type_uint32, 0 },
924
	{ "transfer-format", &cfg_type_transferformat, 0 },
925
	{ "max-cache-size", &cfg_type_sizenodefault, 0 },
926 927
	{ "check-names", &cfg_type_checknames,
	  CFG_CLAUSEFLAG_MULTI | CFG_CLAUSEFLAG_NOTIMP },
928
	{ "cache-file", &cfg_type_qstring, 0 },
929
	{ "suppress-initial-notify", &cfg_type_boolean, CFG_CLAUSEFLAG_NYI },
930 931 932 933 934 935 936 937 938
	{ NULL, NULL, 0 }
};

/*
 * Clauses that can be found within the 'view' statement only.
 */
static cfg_clausedef_t
view_only_clauses[] = {
	{ "match-clients", &cfg_type_bracketed_aml, 0 },
939 940
	{ "match-destinations", &cfg_type_bracketed_aml, 0 },
	{ "match-recursive-only", &cfg_type_boolean, 0 },
941 942 943 944 945 946 947 948 949 950 951
	{ NULL, NULL, 0 }
};

/*
 * Clauses that can be found in a 'zone' statement,
 * with defaults in the 'view' or 'options' statement.
 */
static cfg_clausedef_t
zone_clauses[] = {
	{ "allow-query", &cfg_type_bracketed_aml, 0 },
	{ "allow-transfer", &cfg_type_bracketed_aml, 0 },
952
	{ "allow-update-forwarding", &cfg_type_bracketed_aml, 0 },
953
	{ "allow-notify", &cfg_type_bracketed_aml, 0 },
Andreas Gustafsson's avatar
Andreas Gustafsson committed
954
	{ "notify", &cfg_type_notifytype, 0 },
955 956
	{ "notify-source", &cfg_type_sockaddr4wild, 0 },
	{ "notify-source-v6", &cfg_type_sockaddr6wild, 0 },
957
	{ "also-notify", &cfg_type_portiplist, 0 },
Andreas Gustafsson's avatar
Andreas Gustafsson committed
958 959
	{ "dialup", &cfg_type_dialuptype, 0 },
	{ "forward", &cfg_type_forwardtype, 0 },
960
	{ "forwarders", &cfg_type_portiplist, 0 },
961
	{ "ixfr-from-differences", &cfg_type_boolean, 0 },
962
	{ "maintain-ixfr-base", &cfg_type_boolean, CFG_CLAUSEFLAG_OBSOLETE },
963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984
	{ "max-ixfr-log-size", &cfg_type_size, CFG_CLAUSEFLAG_OBSOLETE },
	{ "transfer-source", &cfg_type_sockaddr4wild, 0 },
	{ "transfer-source-v6", &cfg_type_sockaddr6wild, 0 },
	{ "max-transfer-time-in", &cfg_type_uint32, 0 },
	{ "max-transfer-time-out", &cfg_type_uint32, 0 },
	{ "max-transfer-idle-in", &cfg_type_uint32, 0 },
	{ "max-transfer-idle-out", &cfg_type_uint32, 0 },
	{ "max-retry-time", &cfg_type_uint32, 0 },
	{ "min-retry-time", &cfg_type_uint32, 0 },
	{ "max-refresh-time", &cfg_type_uint32, 0 },
	{ "min-refresh-time", &cfg_type_uint32, 0 },
	{ "sig-validity-interval", &cfg_type_uint32, 0 },
	{ "zone-statistics", &cfg_type_boolean, 0 },
	{ NULL, NULL, 0 }
};

/*
 * Clauses that can be found in a 'zone' statement
 * only.
 */
static cfg_clausedef_t
zone_only_clauses[] = {
Andreas Gustafsson's avatar
Andreas Gustafsson committed
985
	{ "type", &cfg_type_zonetype, 0 },
986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002
	{ "allow-update", &cfg_type_bracketed_aml, 0 },
	{ "file", &cfg_type_qstring, 0 },
	{ "ixfr-base", &cfg_type_qstring, CFG_CLAUSEFLAG_OBSOLETE },
	{ "ixfr-tmp-file", &cfg_type_qstring, CFG_CLAUSEFLAG_OBSOLETE },
	{ "masters", &cfg_type_sockaddrkeylist, 0 },
	{ "pubkey", &cfg_type_pubkey,
	  CFG_CLAUSEFLAG_MULTI | CFG_CLAUSEFLAG_OBSOLETE },
	{ "update-policy", &cfg_type_updatepolicy, 0 },
	{ "database", &cfg_type_astring, 0 },
	/*
	 * Note that the format of the check-names option is different between
	 * the zone options and the global/view options.  Ugh.
	 */
	{ "check-names", &cfg_type_ustring, CFG_CLAUSEFLAG_NOTIMP },
	{ NULL, NULL, 0 }
};

1003 1004 1005

/* The top-level named.conf syntax. */

1006 1007 1008 1009 1010 1011 1012
static cfg_clausedef_t *
namedconf_clausesets[] = {
	namedconf_clauses,
	namedconf_or_view_clauses,
	NULL
};

1013
LIBISCCFG_EXTERNAL_DATA cfg_type_t cfg_type_namedconf = {
1014 1015 1016 1017
	"namedconf", parse_mapbody, print_mapbody, &cfg_rep_map,
	namedconf_clausesets
};

1018 1019
/* The "options" statement syntax. */

1020 1021 1022 1023 1024 1025 1026 1027 1028 1029
static cfg_clausedef_t *
options_clausesets[] = {
	options_clauses,
	view_clauses,
	zone_clauses,
	NULL
};
static cfg_type_t cfg_type_options = {
	"options", parse_map, print_map, &cfg_rep_map, options_clausesets };

1030 1031
/* The "view" statement syntax. */

1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042
static cfg_clausedef_t *
view_clausesets[] = {
	view_only_clauses,
	namedconf_or_view_clauses,
	view_clauses,
	zone_clauses,
	NULL
};
static cfg_type_t cfg_type_viewopts = {
	"view", parse_map, print_map, &cfg_rep_map, view_clausesets };

1043 1044
/* The "zone" statement syntax. */

1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080
static cfg_clausedef_t *
zone_clausesets[] = {
	zone_only_clauses,
	zone_clauses,
	NULL
};
static cfg_type_t cfg_type_zoneopts = {
	"zoneopts", parse_map, print_map, &cfg_rep_map, zone_clausesets };

/*
 * Clauses that can be found within the 'key' statement.
 */
static cfg_clausedef_t
key_clauses[] = {
	{ "algorithm", &cfg_type_astring, 0 },
	{ "secret", &cfg_type_astring, 0 },
	{ NULL, NULL, 0 }
};

static cfg_clausedef_t *
key_clausesets[] = {
	key_clauses,
	NULL
};
static cfg_type_t cfg_type_key = {
	"key", parse_named_map, print_map, &cfg_rep_map, key_clausesets };


/*
 * Clauses that can be found in a 'server' statement.
 */
static cfg_clausedef_t
server_clauses[] = {
	{ "bogus", &cfg_type_boolean, 0 },
	{ "provide-ixfr", &cfg_type_boolean, 0 },
	{ "request-ixfr", &cfg_type_boolean, 0 },
1081
	{ "support-ixfr", &cfg_type_boolean, CFG_CLAUSEFLAG_OBSOLETE },
1082
	{ "transfers", &cfg_type_uint32, 0 },
Andreas Gustafsson's avatar
Andreas Gustafsson committed
1083
	{ "transfer-format", &cfg_type_transferformat, 0 },
1084
	{ "keys", &cfg_type_server_key_kludge, 0 },
1085
	{ "edns", &cfg_type_boolean, 0 },
1086 1087 1088 1089 1090 1091 1092 1093
	{ NULL, NULL, 0 }
};
static cfg_clausedef_t *
server_clausesets[] = {
	server_clauses,
	NULL
};
static cfg_type_t cfg_type_server = {
1094 1095 1096
	"server", parse_addressed_map, print_map, &cfg_rep_map,
	server_clausesets
};
1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110


/*
 * Clauses that can be found in a 'channel' clause in the
 * 'logging' statement.
 *
 * These have some additional constraints that need to be
 * checked after parsing:
 *  - There must exactly one of file/syslog/null/stderr
 *
 */
static cfg_clausedef_t
channel_clauses[] = {
	/* Destinations.  We no longer require these to be first. */
1111
	{ "file", &cfg_type_logfile, 0 },
1112
	{ "syslog", &cfg_type_optional_facility, 0 },
1113 1114 1115
	{ "null", &cfg_type_void, 0 },
	{ "stderr", &cfg_type_void, 0 },
	/* Options.  We now accept these for the null channel, too. */
1116
	{ "severity", &cfg_type_logseverity, 0 },
1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127
	{ "print-time", &cfg_type_boolean, 0 },
	{ "print-severity", &cfg_type_boolean, 0 },
	{ "print-category", &cfg_type_boolean, 0 },
	{ NULL, NULL, 0 }
};
static cfg_clausedef_t *
channel_clausesets[] = {
	channel_clauses,
	NULL
};
static cfg_type_t cfg_type_channel = {
1128 1129 1130
	"channel", parse_named_map, print_map,
	&cfg_rep_map, channel_clausesets
};
1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189

/* A list of log destination, used in the "category" clause. */
static cfg_type_t cfg_type_destinationlist = {
	"destinationlist", parse_bracketed_list, print_bracketed_list,
	&cfg_rep_list, &cfg_type_astring };

/*
 * Clauses that can be found in a 'logging' statement.
 */
static cfg_clausedef_t
logging_clauses[] = {
	{ "channel", &cfg_type_channel, CFG_CLAUSEFLAG_MULTI },
	{ "category", &cfg_type_category, CFG_CLAUSEFLAG_MULTI },
	{ NULL, NULL, 0 }
};
static cfg_clausedef_t *
logging_clausesets[] = {
	logging_clauses,
	NULL
};
static cfg_type_t cfg_type_logging = {
	"logging", parse_map, print_map, &cfg_rep_map, logging_clausesets };


/* Functions. */

static void
print_obj(cfg_printer_t *pctx, cfg_obj_t *obj) {
	obj->type->print(pctx, obj);
}

static void
print(cfg_printer_t *pctx, const char *text, int len) {
	pctx->f(pctx->closure, text, len);
}

static void
print_open(cfg_printer_t *pctx) {
	print(pctx, "{\n", 2);
	pctx->indent++;
}

static void
print_indent(cfg_printer_t *pctx) {
	int indent = pctx->indent;
	while (indent > 0) {
		print(pctx, "\t", 1);
		indent--;
	}
}

static void
print_close(cfg_printer_t *pctx) {
	pctx->indent--;
	print_indent(pctx);
	print(pctx, "}", 1);
}

static isc_result_t
1190
parse(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret) {
Andreas Gustafsson's avatar
Andreas Gustafsson committed
1191 1192 1193 1194 1195 1196 1197
	isc_result_t result;
	INSIST(ret != NULL && *ret == NULL);
	result = type->parse(pctx, type, ret);
	if (result != ISC_R_SUCCESS)
		return (result);
	INSIST(*ret != NULL);
	return (ISC_R_SUCCESS);
1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211
}

void
cfg_print(cfg_obj_t *obj,
	  void (*f)(void *closure, const char *text, int textlen),
	  void *closure)
{
	cfg_printer_t pctx;
	pctx.f = f;
	pctx.closure = closure;
	pctx.indent = 0;
	obj->type->print(&pctx, obj);
}

1212 1213 1214

/* Tuples. */
  
1215
static isc_result_t
1216
create_tuple(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret) {
1217
	isc_result_t result;
1218 1219
	const cfg_tuplefielddef_t *fields = type->of;
	const cfg_tuplefielddef_t *f;
1220 1221 1222
	cfg_obj_t *obj = NULL;
	unsigned int nfields = 0;
	int i;
1223

1224
	for (f = fields; f->name != NULL; f++)
1225 1226 1227 1228 1229
		nfields++;

	CHECK(create_cfgobj(pctx, type, &obj));
	obj->value.tuple = isc_mem_get(pctx->mctx,
				       nfields * sizeof(cfg_obj_t *));
1230 1231 1232 1233
	if (obj->value.tuple == NULL) {
		result = ISC_R_NOMEMORY;
		goto cleanup;
	}
1234
	for (f = fields, i = 0; f->name != NULL; f++, i++)
1235
		obj->value.tuple[i] = NULL;
1236 1237 1238 1239 1240 1241 1242 1243 1244
	*ret = obj;
	return (ISC_R_SUCCESS);

 cleanup:
	CLEANUP_OBJ(obj);
	return (result);
}

static isc_result_t
1245
parse_tuple(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret)
1246 1247
{
	isc_result_t result;
1248 1249
	const cfg_tuplefielddef_t *fields = type->of;
	const cfg_tuplefielddef_t *f;
1250 1251
	cfg_obj_t *obj = NULL;
	unsigned int i;
1252

1253
	CHECK(create_tuple(pctx, type, &obj));
1254 1255
	for (f = fields, i = 0; f->name != NULL; f++, i++)
		CHECK(parse(pctx, f->type, &obj->value.tuple[i]));
1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267

	*ret = obj;
	return (ISC_R_SUCCESS);

 cleanup:
	CLEANUP_OBJ(obj);
	return (result);
}

static void
print_tuple(cfg_printer_t *pctx, cfg_obj_t *obj) {
	unsigned int i;
1268 1269
	const cfg_tuplefielddef_t *fields = obj->type->of;
	const cfg_tuplefielddef_t *f;
1270
	isc_boolean_t need_space = ISC_FALSE;
1271

1272
	for (f = fields, i = 0; f->name != NULL; f++, i++) {
1273 1274
		cfg_obj_t *fieldobj = obj->value.tuple[i];
		if (need_space)
1275
			print(pctx, " ", 1);
1276 1277
		print_obj(pctx, fieldobj);
		need_space = ISC_TF(fieldobj->type->print != print_void);
1278 1279 1280 1281 1282 1283
	}
}

static void
free_tuple(cfg_parser_t *pctx, cfg_obj_t *obj) {
	unsigned int i;
1284 1285
	const cfg_tuplefielddef_t *fields = obj->type->of;
	const cfg_tuplefielddef_t *f;
1286 1287
	unsigned int nfields = 0;

1288 1289 1290
	if (obj->value.tuple == NULL)
		return;

1291
	for (f = fields, i = 0; f->name != NULL; f++, i++) {
1292 1293 1294 1295 1296 1297 1298
		CLEANUP_OBJ(obj->value.tuple[i]);
		nfields++;
	}
	isc_mem_put(pctx->mctx, obj->value.tuple,
		    nfields * sizeof(cfg_obj_t *));
}

1299 1300 1301 1302 1303 1304
isc_boolean_t
cfg_obj_istuple(cfg_obj_t *obj) {
	REQUIRE(obj != NULL);
	return (ISC_TF(obj->type->rep == &cfg_rep_tuple));
}

1305 1306 1307
cfg_obj_t *
cfg_tuple_get(cfg_obj_t *tupleobj, const char* name) {
	unsigned int i;
1308 1309
	const cfg_tuplefielddef_t *fields;
	const cfg_tuplefielddef_t *f;
1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324
	
	REQUIRE(tupleobj != NULL && tupleobj->type->rep == &cfg_rep_tuple);

	fields = tupleobj->type->of;
	for (f = fields, i = 0; f->name != NULL; f++, i++) {
		if (strcmp(f->name, name) == 0)
			return (tupleobj->value.tuple[i]);
	}
	INSIST(0);
	return (NULL);
}

/*
 * Parse a required special character.
 */
1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377
static isc_result_t
parse_special(cfg_parser_t *pctx, int special) {
        isc_result_t result;
	CHECK(cfg_gettoken(pctx, 0));
	if (pctx->token.type == isc_tokentype_special &&
	    pctx->token.value.as_char == special)
		return (ISC_R_SUCCESS);

	parser_error(pctx, LOG_NEAR, "'%c' expected", special);
	return (ISC_R_UNEXPECTEDTOKEN);
 cleanup:
	return (result);
}

/*
 * Parse a required semicolon.  If it is not there, log
 * an error and increment the error count but continue
 * parsing.  Since the next token is pushed back,
 * care must be taken to make sure it is eventually
 * consumed or an infinite loop may result.
 */
static isc_result_t
parse_semicolon(cfg_parser_t *pctx) {
        isc_result_t result;
	CHECK(cfg_gettoken(pctx, 0));
	if (pctx->token.type == isc_tokentype_special &&
	    pctx->token.value.as_char == ';')
		return (ISC_R_SUCCESS);

	parser_error(pctx, LOG_BEFORE, "missing ';'");
	cfg_ungettoken(pctx);
 cleanup:
	return (result);
}

/*
 * Parse EOF, logging and returning an error if not there.
 */
static isc_result_t
parse_eof(cfg_parser_t *pctx) {
        isc_result_t result;
	CHECK(cfg_gettoken(pctx, 0));

	if (pctx->token.type == isc_tokentype_eof)
		return (ISC_R_SUCCESS);

	parser_error(pctx, LOG_NEAR, "syntax error");
	return (ISC_R_UNEXPECTEDTOKEN);
 cleanup:
	return(result);
}

/* A list of files, used internally for pctx->files. */
1378

1379 1380 1381 1382 1383