parser.c revision ee3ab6063dd13b5947d3fbe88b9ce8f38d65df9d
/*
* 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.
*/
/* $Id: parser.c,v 1.65 2001/07/26 20:42:46 bwelling Exp $ */
#include <config.h>
#include <isc/buffer.h>
#include <isc/dir.h>
#include <isc/formatcheck.h>
#include <isc/lex.h>
#include <isc/log.h>
#include <isc/mem.h>
#include <isc/net.h>
#include <isc/netaddr.h>
#include <isc/print.h>
#include <isc/string.h>
#include <isc/sockaddr.h>
#include <isc/util.h>
#include <isc/symtab.h>
#include <isccfg/cfg.h>
#include <isccfg/log.h>
/* Shorthand */
#define CAT CFG_LOGCATEGORY_CONFIG
#define MOD CFG_LOGMODULE_PARSER
#define QSTRING (ISC_LEXOPT_QSTRING | ISC_LEXOPT_QSTRINGMULTILINE)
/*
* 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/* Clause is obsolete */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
/* Default value has changed since earlier release */
#define CFG_CLAUSEFLAG_NEWDEFAULT 0x00000010
/*
* Clause needs to be interpreted during parsing
* by calling a callback function, like the
* "directory" option.
*/
#define CFG_CLAUSEFLAG_CALLBACK 0x00000020
/*
* 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;
typedef struct cfg_tuplefielddef cfg_tuplefielddef_t;
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
*/
typedef isc_result_t (*cfg_parsefunc_t)(cfg_parser_t *, const cfg_type_t *type,
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 *);
/*
* 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;
/*
* 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.
*/
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;
/*
* 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;
cfg_parsecallback_t callback;
void *callbackarg;
};
/*
* A configuration printer object. This is an abstract
* interface to a destination to which text can be printed
* by calling the function 'f'.
*/
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;
};
/* A tuple field definition. */
struct cfg_tuplefielddef {
const char *name;
cfg_type_t *type;
unsigned int flags;
};
/* 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 */
const void * of; /* For meta-types */
};
/* A keyword-type definition, for things like "port <integer>". */
typedef struct {
const char *name;
const cfg_type_t *type;
} keyword_type_t;
struct cfg_map {
cfg_obj_t *id; /* Used for 'named maps' like keys, zones, &c */
const cfg_clausedef_t * const *clausesets; /* The clauses that
can occur in this map;
used for printing */
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 {
const cfg_type_t *type;
union {
isc_uint32_t uint32;
isc_uint64_t uint64;
isc_textregion_t string; /* null terminated, too */
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. */
struct cfg_listelt {
cfg_obj_t *obj;
ISC_LINK(cfg_listelt_t) link;
};
/*
* Forward declarations of static functions.
*/
static isc_result_t
create_cfgobj(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **objp);
static isc_result_t
create_list(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **objp);
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
create_string(cfg_parser_t *pctx, const char *contents, const cfg_type_t *type,
cfg_obj_t **ret);
static void
free_string(cfg_parser_t *pctx, cfg_obj_t *obj);
static isc_result_t
create_map(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **objp);
static isc_result_t
create_tuple(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **objp);
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);
static void
print_void(cfg_printer_t *pctx, cfg_obj_t *obj);
static isc_result_t
parse_enum_or_other(cfg_parser_t *pctx, const cfg_type_t *enumtype,
const cfg_type_t *othertype, cfg_obj_t **ret);
static isc_result_t
parse_mapbody(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret);
static void
print_mapbody(cfg_printer_t *pctx, cfg_obj_t *obj);
static isc_result_t
parse_map(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret);
static void
print_map(cfg_printer_t *pctx, cfg_obj_t *obj);
static isc_result_t
parse_named_map(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret);
static isc_result_t
parse_addressed_map(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret);
static isc_result_t
parse_list(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret);
static void
print_list(cfg_printer_t *pctx, cfg_obj_t *obj);
static isc_result_t
parse_tuple(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret);
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
parse_spacelist(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret);
static void
print_spacelist(cfg_printer_t *pctx, cfg_obj_t *obj);
static void
print_sockaddr(cfg_printer_t *pctx, cfg_obj_t *obj);
static isc_result_t
parse_addrmatchelt(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret);
static isc_result_t
parse_bracketed_list(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret);
static void
print_bracketed_list(cfg_printer_t *pctx, cfg_obj_t *obj);
static isc_result_t
parse_keyvalue(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret);
static isc_result_t
parse_optional_keyvalue(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret);
static void
print_keyvalue(cfg_printer_t *pctx, cfg_obj_t *obj);
static isc_result_t
parse_symtab_elt(cfg_parser_t *pctx, const char *name,
cfg_type_t *elttype, isc_symtab_t *symtab,
isc_boolean_t callback);
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,
const char *fmt, ...) ISC_FORMAT_PRINTF(3, 4);
static void
parser_warning(cfg_parser_t *pctx, unsigned int flags,
const char *fmt, ...) ISC_FORMAT_PRINTF(3, 4);
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);
static void
print_ustring(cfg_printer_t *pctx, cfg_obj_t *obj);
static isc_result_t
parse_enum(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret);
/*
* Data representations. These correspond to members of the
* "value" union in struct cfg_obj (except "void", which does
* not need a union member).
*/
cfg_rep_t cfg_rep_uint32 = { "uint32", free_noop };
cfg_rep_t cfg_rep_uint64 = { "uint64", free_noop };
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.
* Additional types are declared publicly in cfg.h.
*/
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;
static cfg_type_t cfg_type_netaddr;
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;
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;
static cfg_type_t cfg_type_logfile;
static cfg_type_t cfg_type_lwres;
static cfg_type_t cfg_type_controls_sockaddr;
static cfg_type_t cfg_type_notifytype;
static cfg_type_t cfg_type_dialuptype;
/*
* Configuration type definitions.
*/
/* tkey-dhkey */
static cfg_tuplefielddef_t tkey_dhkey_fields[] = {
{ "name", &cfg_type_qstring, 0 },
{ "keyid", &cfg_type_uint32, 0 },
{ NULL, NULL, 0 }
};
static cfg_type_t cfg_type_tkey_dhkey = {
"tkey-dhkey", parse_tuple, print_tuple, &cfg_rep_tuple,
tkey_dhkey_fields
};
/* listen-on */
static cfg_tuplefielddef_t listenon_fields[] = {
{ "port", &cfg_type_optional_port, 0 },
{ "acl", &cfg_type_bracketed_aml, 0 },
{ NULL, NULL, 0 }
};
static cfg_type_t cfg_type_listenon = {
"listenon", parse_tuple, print_tuple, &cfg_rep_tuple, listenon_fields };
/* acl */
static cfg_tuplefielddef_t acl_fields[] = {
{ "name", &cfg_type_astring, 0 },
{ "value", &cfg_type_bracketed_aml, 0 },
{ NULL, NULL, 0 }
};
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; }"
*/
static cfg_tuplefielddef_t sockaddrkey_fields[] = {
{ "sockaddr", &cfg_type_sockaddr, 0 },
{ "key", &cfg_type_optional_keyref, 0 },
{ NULL, NULL, 0 },
};
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
};
static cfg_tuplefielddef_t sockaddrkeylist_fields[] = {
{ "port", &cfg_type_optional_port, 0 },
{ "addresses", &cfg_type_bracketed_sockaddrkeylist, 0 },
{ NULL, NULL, 0 }
};
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; }"
*/
static cfg_tuplefielddef_t portiplist_fields[] = {
{ "port", &cfg_type_optional_port, 0 },
{ "addresses", &cfg_type_bracketed_sockaddrlist, 0 },
{ NULL, NULL, 0 }
};
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.
*/
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 }
};
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
};
static const char *mode_enums[] = { "grant", "deny", NULL };
static cfg_type_t cfg_type_mode = {
"mode", parse_enum, print_ustring, &cfg_rep_string,
&mode_enums
};
static const char *matchtype_enums[] = {
"name", "subdomain", "wildcard", "self", NULL };
static cfg_type_t cfg_type_matchtype = {
"matchtype", parse_enum, print_ustring, &cfg_rep_string,
&matchtype_enums
};
/*
* A grant statement, used in the update policy.
*/
static cfg_tuplefielddef_t grant_fields[] = {
{ "mode", &cfg_type_mode, 0 },
{ "identity", &cfg_type_astring, 0 }, /* domain name */
{ "matchtype", &cfg_type_matchtype, 0 },
{ "name", &cfg_type_astring, 0 }, /* domain name */
{ "types", &cfg_type_rrtypelist, 0 },
{ NULL, NULL, 0 }
};
static cfg_type_t cfg_type_grant = {
"grant", parse_tuple, print_tuple, &cfg_rep_tuple, grant_fields };
static cfg_type_t cfg_type_updatepolicy = {
"update_policy", parse_bracketed_list, print_bracketed_list,
&cfg_rep_list, &cfg_type_grant
};
/*
* A view statement.
*/
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 }
};
static cfg_type_t cfg_type_view = {
"view", parse_tuple, print_tuple, &cfg_rep_tuple, view_fields };
/*
* A zone statement.
*/
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 }
};
static cfg_type_t cfg_type_zone = {
"zone", parse_tuple, print_tuple, &cfg_rep_tuple, zone_fields };
/*
* A "category" clause in the "logging" statement.
*/
static cfg_tuplefielddef_t category_fields[] = {
{ "name", &cfg_type_astring, 0 },
{ "destinations", &cfg_type_destinationlist,0 },
{ NULL, NULL, 0 }
};
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.
*/
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 }
};
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,
print_keyvalue, &cfg_rep_string, &wild_class_kw
};
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,
print_keyvalue, &cfg_rep_string, &wild_type_kw
};
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,
print_keyvalue, &cfg_rep_string, &wild_name_kw
};
/*
* An rrset ordering element.
*/
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 }
};
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.
*/
static cfg_tuplefielddef_t checknames_fields[] = {
{ "type", &cfg_type_ustring, 0 },
{ "mode", &cfg_type_ustring, 0 },
{ NULL, NULL, 0 }
};
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 = {
"rrsetorder", parse_bracketed_list, print_bracketed_list,
&cfg_rep_list, &cfg_type_rrsetorderingelement
};
static keyword_type_t port_kw = { "port", &cfg_type_uint32 };
static cfg_type_t cfg_type_optional_port = {
"optional_port", parse_optional_keyvalue, print_keyvalue,
&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 };
static const char *forwardtype_enums[] = { "first", "only", NULL };
static cfg_type_t cfg_type_forwardtype = {
"forwardtype", parse_enum, print_ustring, &cfg_rep_string,
&forwardtype_enums
};
static const char *zonetype_enums[] = {
"master", "slave", "stub", "hint", "forward", NULL };
static cfg_type_t cfg_type_zonetype = {
"zonetype", parse_enum, print_ustring, &cfg_rep_string,
&zonetype_enums
};
static const char *loglevel_enums[] = {
"critical", "error", "warning", "notice", "info", "dynamic", NULL };
static cfg_type_t cfg_type_loglevel = {
"loglevel", parse_enum, print_ustring, &cfg_rep_string,
&loglevel_enums
};
static const char *transferformat_enums[] = {
"many-answers", "one-answer", NULL };
static cfg_type_t cfg_type_transferformat = {
"transferformat", parse_enum, print_ustring, &cfg_rep_string,
&transferformat_enums
};
/*
* 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 },
{ "lwres", &cfg_type_lwres, CFG_CLAUSEFLAG_MULTI },
{ 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 },
{ "directory", &cfg_type_qstring, CFG_CLAUSEFLAG_CALLBACK },
{ "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 },
{ "host-statistics", &cfg_type_boolean, 0 },
{ "interface-interval", &cfg_type_uint32, 0 },
{ "listen-on", &cfg_type_listenon, CFG_CLAUSEFLAG_MULTI },
{ "listen-on-v6", &cfg_type_listenon, CFG_CLAUSEFLAG_MULTI },
{ "match-mapped-addresses", &cfg_type_boolean, 0 },
{ "memstatistics-file", &cfg_type_qstring, 0 },
{ "multiple-cnames", &cfg_type_boolean, CFG_CLAUSEFLAG_OBSOLETE },
{ "named-xfer", &cfg_type_qstring, CFG_CLAUSEFLAG_OBSOLETE },
{ "pid-file", &cfg_type_qstring, 0 },
{ "port", &cfg_type_uint32, 0 },
{ "random-device", &cfg_type_qstring, 0 },
{ "recursive-clients", &cfg_type_uint32, 0 },
{ "rrset-order", &cfg_type_rrsetorder, 0 },
{ "serial-queries", &cfg_type_uint32, CFG_CLAUSEFLAG_OBSOLETE },
{ "serial-query-rate", &cfg_type_uint32, 0 },
{ "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 },
{ "version", &cfg_type_qstring, 0 },
{ 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-notify", &cfg_type_bracketed_aml, 0 },
{ "allow-update-forwarding", &cfg_type_bracketed_aml, 0 },
{ "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 },
{ "minimal-responses", &cfg_type_boolean, 0 },
{ "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 },
{ "notify-source", &cfg_type_sockaddr4wild, 0 },
{ "notify-source-v6", &cfg_type_sockaddr6wild, 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 },
{ "transfer-format", &cfg_type_ustring, 0 },
/*
* XXX "default" should not be accepted as a size in
* max-cache-size.
*/
{ "max-cache-size", &cfg_type_size, 0 },
{ "check-names", &cfg_type_checknames,
CFG_CLAUSEFLAG_MULTI | CFG_CLAUSEFLAG_NOTIMP },
{ "cache-file", &cfg_type_qstring, 0 },
{ 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 },
{ "match-destinations", &cfg_type_bracketed_aml, 0 },
{ "match-recursive-only", &cfg_type_boolean, 0 },
{ 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 },
{ "notify", &cfg_type_notifytype, 0 },
{ "also-notify", &cfg_type_portiplist, 0 },
{ "dialup", &cfg_type_dialuptype, 0 },
{ "forward", &cfg_type_forwardtype, 0 },
{ "forwarders", &cfg_type_portiplist, 0 },
{ "maintain-ixfr-base", &cfg_type_boolean, 0 },
{ "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[] = {
{ "type", &cfg_type_zonetype, 0 },
{ "allow-update", &cfg_type_bracketed_aml, 0 },
{ "allow-update-forwarding", &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 }
};
/* The top-level named.conf syntax. */
static cfg_clausedef_t *
namedconf_clausesets[] = {
namedconf_clauses,
namedconf_or_view_clauses,
NULL
};
LIBISCCFG_EXTERNAL_DATA cfg_type_t cfg_type_namedconf = {
"namedconf", parse_mapbody, print_mapbody, &cfg_rep_map,
namedconf_clausesets
};
/* The "options" statement syntax. */
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 };
/* The "view" statement syntax. */
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 };
/* The "zone" statement syntax. */
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 },
{ "support-ixfr", &cfg_type_boolean, CFG_CLAUSEFLAG_OBSOLETE },
{ "transfers", &cfg_type_uint32, 0 },
{ "transfer-format", &cfg_type_transferformat, 0 },
{ "keys", &cfg_type_server_key_kludge, 0 },
{ "edns", &cfg_type_boolean, 0 },
{ NULL, NULL, 0 }
};
static cfg_clausedef_t *
server_clausesets[] = {
server_clauses,
NULL
};
static cfg_type_t cfg_type_server = {
"server", parse_addressed_map, print_map, &cfg_rep_map,
server_clausesets
};
/*
* 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. */
{ "file", &cfg_type_logfile, 0 },
{ "syslog", &cfg_type_optional_facility, 0 },
{ "null", &cfg_type_void, 0 },
{ "stderr", &cfg_type_void, 0 },
/* Options. We now accept these for the null channel, too. */
{ "severity", &cfg_type_logseverity, 0 },
{ "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 = {
"channel", parse_named_map, print_map,
&cfg_rep_map, channel_clausesets
};
/* 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
parse(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret) {
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);
}
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);
}
/* Tuples. */
static isc_result_t
create_tuple(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret) {
isc_result_t result;
const cfg_tuplefielddef_t *fields = type->of;
const cfg_tuplefielddef_t *f;
cfg_obj_t *obj = NULL;
unsigned int nfields = 0;
int i;
for (f = fields; f->name != NULL; f++)
nfields++;
CHECK(create_cfgobj(pctx, type, &obj));
obj->value.tuple = isc_mem_get(pctx->mctx,
nfields * sizeof(cfg_obj_t *));
if (obj->value.tuple == NULL) {
result = ISC_R_NOMEMORY;
goto cleanup;
}
for (f = fields, i = 0; f->name != NULL; f++, i++)
obj->value.tuple[i] = NULL;
*ret = obj;
return (ISC_R_SUCCESS);
cleanup:
CLEANUP_OBJ(obj);
return (result);
}
static isc_result_t
parse_tuple(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret)
{
isc_result_t result;
const cfg_tuplefielddef_t *fields = type->of;
const cfg_tuplefielddef_t *f;
cfg_obj_t *obj = NULL;
unsigned int i;
CHECK(create_tuple(pctx, type, &obj));
for (f = fields, i = 0; f->name != NULL; f++, i++)
CHECK(parse(pctx, f->type, &obj->value.tuple[i]));
*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;
const cfg_tuplefielddef_t *fields = obj->type->of;
const cfg_tuplefielddef_t *f;
isc_boolean_t need_space = ISC_FALSE;
for (f = fields, i = 0; f->name != NULL; f++, i++) {
cfg_obj_t *fieldobj = obj->value.tuple[i];
if (need_space)
print(pctx, " ", 1);
print_obj(pctx, fieldobj);
need_space = ISC_TF(fieldobj->type->print != print_void);
}
}
static void
free_tuple(cfg_parser_t *pctx, cfg_obj_t *obj) {
unsigned int i;
const cfg_tuplefielddef_t *fields = obj->type->of;
const cfg_tuplefielddef_t *f;
unsigned int nfields = 0;
if (obj->value.tuple == NULL)
return;
for (f = fields, i = 0; f->name != NULL; f++, i++) {
CLEANUP_OBJ(obj->value.tuple[i]);
nfields++;
}
isc_mem_put(pctx->mctx, obj->value.tuple,
nfields * sizeof(cfg_obj_t *));
}
isc_boolean_t
cfg_obj_istuple(cfg_obj_t *obj) {
REQUIRE(obj != NULL);
return (ISC_TF(obj->type->rep == &cfg_rep_tuple));
}
cfg_obj_t *
cfg_tuple_get(cfg_obj_t *tupleobj, const char* name) {
unsigned int i;
const cfg_tuplefielddef_t *fields;
const cfg_tuplefielddef_t *f;
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.
*/
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. */
static cfg_type_t cfg_type_filelist = {
"filelist", NULL, print_list, &cfg_rep_list,
&cfg_type_qstring
};
isc_result_t
cfg_parser_create(isc_mem_t *mctx, isc_log_t *lctx, cfg_parser_t **ret)
{
isc_result_t result;
cfg_parser_t *pctx;
isc_lexspecials_t specials;
REQUIRE(mctx != NULL);
REQUIRE(ret != NULL && *ret == NULL);
pctx = isc_mem_get(mctx, sizeof(*pctx));
if (pctx == NULL)
return (ISC_R_NOMEMORY);
pctx->mctx = mctx;
pctx->lctx = lctx;
pctx->lexer = NULL;
pctx->seen_eof = ISC_FALSE;
pctx->ungotten = ISC_FALSE;
pctx->errors = 0;
pctx->open_files = NULL;
pctx->closed_files = NULL;
pctx->line = 0;
pctx->callback = NULL;
pctx->callbackarg = NULL;
memset(specials, 0, sizeof(specials));
specials['{'] = 1;
specials['}'] = 1;
specials[';'] = 1;
specials['/'] = 1;
specials['"'] = 1;
specials['!'] = 1;
CHECK(isc_lex_create(pctx->mctx, 1024, &pctx->lexer));
isc_lex_setspecials(pctx->lexer, specials);
isc_lex_setcomments(pctx->lexer, (ISC_LEXCOMMENT_C |
ISC_LEXCOMMENT_CPLUSPLUS |
ISC_LEXCOMMENT_SHELL));
CHECK(create_list(pctx, &cfg_type_filelist, &pctx->open_files));
CHECK(create_list(pctx, &cfg_type_filelist, &pctx->closed_files));
*ret = pctx;
return (ISC_R_SUCCESS);
cleanup:
if (pctx->lexer != NULL)
isc_lex_destroy(&pctx->lexer);
CLEANUP_OBJ(pctx->open_files);
CLEANUP_OBJ(pctx->closed_files);
isc_mem_put(mctx, pctx, sizeof(*pctx));
return (result);
}
static isc_result_t
parser_openfile(cfg_parser_t *pctx, const char *filename) {
isc_result_t result;
cfg_listelt_t *elt = NULL;
cfg_obj_t *stringobj = NULL;
result = isc_lex_openfile(pctx->lexer, filename);
if (result != ISC_R_SUCCESS) {
parser_error(pctx, 0, "open: %s: %s",
filename, isc_result_totext(result));
goto cleanup;
}
CHECK(create_string(pctx, filename, &cfg_type_qstring, &stringobj));
CHECK(create_listelt(pctx, &elt));
elt->obj = stringobj;
ISC_LIST_APPEND(pctx->open_files->value.list, elt, link);
return (ISC_R_SUCCESS);
cleanup:
CLEANUP_OBJ(stringobj);
return (result);
}
void
cfg_parser_setcallback(cfg_parser_t *pctx,
cfg_parsecallback_t callback,
void *arg)
{
pctx->callback = callback;
pctx->callbackarg = arg;
}
/*
* Parse a configuration using a pctx where a lexer has already
* been set up with a source.
*/
static isc_result_t
parse2(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret) {
isc_result_t result;
cfg_obj_t *obj = NULL;
result = parse(pctx, type, &obj);
if (pctx->errors != 0) {
/* Errors have been logged. */
if (result == ISC_R_SUCCESS)
result = ISC_R_FAILURE;
goto cleanup;
}
if (result != ISC_R_SUCCESS) {
/* Parsing failed but no errors have been logged. */
parser_error(pctx, 0, "parsing failed");
goto cleanup;
}
CHECK(parse_eof(pctx));
*ret = obj;
return (ISC_R_SUCCESS);
cleanup:
CLEANUP_OBJ(obj);
return (result);
}
isc_result_t
cfg_parse_file(cfg_parser_t *pctx, const char *filename,
const cfg_type_t *type, cfg_obj_t **ret)
{
isc_result_t result;
REQUIRE(filename != NULL);
CHECK(parser_openfile(pctx, filename));
CHECK(parse2(pctx, type, ret));
cleanup:
return (result);
}
isc_result_t
cfg_parse_buffer(cfg_parser_t *pctx, isc_buffer_t *buffer,
const cfg_type_t *type, cfg_obj_t **ret)
{
isc_result_t result;
REQUIRE(buffer != NULL);
CHECK(isc_lex_openbuffer(pctx->lexer, buffer));
CHECK(parse2(pctx, type, ret));
cleanup:
return (result);
}
void
cfg_parser_destroy(cfg_parser_t **pctxp) {
cfg_parser_t *pctx = *pctxp;
isc_lex_destroy(&pctx->lexer);
/*
* Cleaning up open_files does not
* close the files; that was already done
* by closing the lexer.
*/
CLEANUP_OBJ(pctx->open_files);
CLEANUP_OBJ(pctx->closed_files);
isc_mem_put(pctx->mctx, pctx, sizeof(*pctx));
*pctxp = NULL;
}
/*
* void
*/
static isc_result_t
parse_void(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret) {
UNUSED(type);
return (create_cfgobj(pctx, &cfg_type_void, ret));
}
static void
print_void(cfg_printer_t *pctx, cfg_obj_t *obj) {
UNUSED(pctx);
UNUSED(obj);
}
isc_boolean_t
cfg_obj_isvoid(cfg_obj_t *obj) {
REQUIRE(obj != NULL);
return (ISC_TF(obj->type->rep == &cfg_rep_void));
}
static cfg_type_t cfg_type_void = {
"void", parse_void, print_void, &cfg_rep_void, NULL };
/*
* uint32
*/
static isc_result_t
parse_uint32(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret) {
isc_result_t result;
cfg_obj_t *obj = NULL;
UNUSED(type);
CHECK(cfg_gettoken(pctx, ISC_LEXOPT_NUMBER | ISC_LEXOPT_CNUMBER));
if (pctx->token.type != isc_tokentype_number) {
parser_error(pctx, LOG_NEAR, "expected number");
return (ISC_R_UNEXPECTEDTOKEN);
}
CHECK(create_cfgobj(pctx, &cfg_type_uint32, &obj));
obj->value.uint32 = pctx->token.value.as_ulong;
*ret = obj;
cleanup:
return (result);
}
static void
print_uint(cfg_printer_t *pctx, unsigned int u) {
char buf[32];
snprintf(buf, sizeof(buf), "%u", u);
print(pctx, buf, strlen(buf));
}
static void
print_uint32(cfg_printer_t *pctx, cfg_obj_t *obj) {
print_uint(pctx, obj->value.uint32);
}
isc_boolean_t
cfg_obj_isuint32(cfg_obj_t *obj) {
REQUIRE(obj != NULL);
return (ISC_TF(obj->type->rep == &cfg_rep_uint32));
}
isc_uint32_t
cfg_obj_asuint32(cfg_obj_t *obj) {
REQUIRE(obj != NULL && obj->type->rep == &cfg_rep_uint32);
return (obj->value.uint32);
}
static cfg_type_t cfg_type_uint32 = {
"integer", parse_uint32, print_uint32, &cfg_rep_uint32, NULL };
/*
* uint64
*/
isc_boolean_t
cfg_obj_isuint64(cfg_obj_t *obj) {
REQUIRE(obj != NULL);
return (ISC_TF(obj->type->rep == &cfg_rep_uint64));
}
isc_uint64_t
cfg_obj_asuint64(cfg_obj_t *obj) {
REQUIRE(obj != NULL && obj->type->rep == &cfg_rep_uint64);
return (obj->value.uint64);
}
static isc_result_t
parse_unitstring(char *str, isc_resourcevalue_t *valuep) {
char *endp;
unsigned int len;
isc_uint64_t value;
isc_uint64_t unit;
value = isc_string_touint64(str, &endp, 10);
if (*endp == 0) {
*valuep = value;
return (ISC_R_SUCCESS);
}
len = strlen(str);
if (len < 2 || endp[1] != '\0')
return (ISC_R_FAILURE);
switch (str[len - 1]) {
case 'k':
case 'K':
unit = 1024;
break;
case 'm':
case 'M':
unit = 1024 * 1024;
break;
case 'g':
case 'G':
unit = 1024 * 1024 * 1024;
break;
default:
return (ISC_R_FAILURE);
}
if (value > ISC_UINT64_MAX / unit)
return (ISC_R_FAILURE);
*valuep = value * unit;
return (ISC_R_SUCCESS);
}
static void
print_uint64(cfg_printer_t *pctx, cfg_obj_t *obj) {
char buf[32];
sprintf(buf, "%" ISC_PRINT_QUADFORMAT "u", obj->value.uint64);
print(pctx, buf, strlen(buf));
}
static cfg_type_t cfg_type_uint64 = {
"64_bit_integer", NULL, print_uint64, &cfg_rep_uint64, NULL };
static isc_result_t
parse_sizeval(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret) {
isc_result_t result;
cfg_obj_t *obj = NULL;
isc_uint64_t val;
UNUSED(type);
CHECK(cfg_gettoken(pctx, 0));
CHECK(parse_unitstring(pctx->token.value.as_pointer, &val));
CHECK(create_cfgobj(pctx, &cfg_type_uint64, &obj));
obj->value.uint64 = val;
*ret = obj;
return (ISC_R_SUCCESS);
cleanup:
parser_error(pctx, LOG_NEAR, "expected integer and optional unit");
return (result);
}
/*
* A size value (number + optional unit).
*/
static cfg_type_t cfg_type_sizeval = {
"sizeval", parse_sizeval, print_uint64, &cfg_rep_uint64, NULL };
/*
* A size, "unlimited", or "default".
*/
static const char *size_enums[] = { "unlimited", "default", NULL };
static isc_result_t
parse_size(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret) {
return (parse_enum_or_other(pctx, type, &cfg_type_sizeval, ret));
}
static cfg_type_t cfg_type_size = {
"size", parse_size, print_ustring, &cfg_rep_string, size_enums
};
/*
* optional_keyvalue
*/
static isc_result_t
parse_maybe_optional_keyvalue(cfg_parser_t *pctx, const cfg_type_t *type,
isc_boolean_t optional, cfg_obj_t **ret)
{
isc_result_t result;
cfg_obj_t *obj = NULL;
const keyword_type_t *kw = type->of;
CHECK(cfg_peektoken(pctx, 0));
if (pctx->token.type == isc_tokentype_string &&
strcasecmp(pctx->token.value.as_pointer, kw->name) == 0) {
CHECK(cfg_gettoken(pctx, 0));
CHECK(kw->type->parse(pctx, kw->type, &obj));
obj->type = type; /* XXX kludge */
} else {
if (optional) {
CHECK(parse_void(pctx, NULL, &obj));
} else {
parser_error(pctx, LOG_NEAR, "expected '%s'",
kw->name);
result = ISC_R_UNEXPECTEDTOKEN;
goto cleanup;
}
}
*ret = obj;
cleanup:
return (result);
}
static isc_result_t
parse_keyvalue(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret) {
return (parse_maybe_optional_keyvalue(pctx, type, ISC_FALSE, ret));
}
static isc_result_t
parse_optional_keyvalue(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret) {
return (parse_maybe_optional_keyvalue(pctx, type, ISC_TRUE, ret));
}
static void
print_keyvalue(cfg_printer_t *pctx, cfg_obj_t *obj) {
const keyword_type_t *kw = obj->type->of;
print(pctx, kw->name, strlen(kw->name));
print(pctx, " ", 1);
kw->type->print(pctx, obj);
}
/*
* qstring, ustring, astring
*/
/* Create a string object from a null-terminated C string. */
static isc_result_t
create_string(cfg_parser_t *pctx, const char *contents, const cfg_type_t *type,
cfg_obj_t **ret)
{
isc_result_t result;
cfg_obj_t *obj = NULL;
int len;
CHECK(create_cfgobj(pctx, type, &obj));
len = strlen(contents);
obj->value.string.length = len;
obj->value.string.base = isc_mem_get(pctx->mctx, len + 1);
if (obj->value.string.base == 0) {
CLEANUP_OBJ(obj);
return (ISC_R_NOMEMORY);
}
memcpy(obj->value.string.base, contents, len);
obj->value.string.base[len] = '\0';
*ret = obj;
cleanup:
return (result);
}
static isc_result_t
parse_qstring(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret) {
isc_result_t result;
UNUSED(type);
CHECK(cfg_gettoken(pctx, QSTRING));
if (pctx->token.type != isc_tokentype_qstring) {
parser_error(pctx, LOG_NEAR, "expected quoted string");
return (ISC_R_UNEXPECTEDTOKEN);
}
return (create_string(pctx,
pctx->token.value.as_pointer,
&cfg_type_qstring,
ret));
cleanup:
return (result);
}
static isc_result_t
parse_ustring(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret) {
isc_result_t result;
UNUSED(type);
CHECK(cfg_gettoken(pctx, 0));
if (pctx->token.type != isc_tokentype_string) {
parser_error(pctx, LOG_NEAR, "expected unquoted string");
return (ISC_R_UNEXPECTEDTOKEN);
}
return (create_string(pctx,
pctx->token.value.as_pointer,
&cfg_type_ustring,
ret));
cleanup:
return (result);
}
static isc_result_t
parse_astring(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret) {
isc_result_t result;
UNUSED(type);
CHECK(cfg_getstringtoken(pctx));
return (create_string(pctx,
pctx->token.value.as_pointer,
&cfg_type_qstring,
ret));
cleanup:
return (result);
}
static isc_boolean_t
is_enum(const char *s, const char *const *enums) {
const char * const *p;
for (p = enums; *p != NULL; p++) {
if (strcasecmp(*p, s) == 0)
return (ISC_TRUE);
}
return (ISC_FALSE);
}
static isc_result_t
check_enum(cfg_parser_t *pctx, cfg_obj_t *obj, const char *const *enums) {
const char *s = obj->value.string.base;
if (is_enum(s, enums))
return (ISC_R_SUCCESS);
parser_error(pctx, LOG_NEAR, "'%s' unexpected", s);
return (ISC_R_UNEXPECTEDTOKEN);
}
static isc_result_t
parse_enum(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret) {
isc_result_t result;
cfg_obj_t *obj = NULL;
CHECK(parse_ustring(pctx, NULL, &obj));
CHECK(check_enum(pctx, obj, type->of));
*ret = obj;
return (ISC_R_SUCCESS);
cleanup:
CLEANUP_OBJ(obj);
return (result);
}
static isc_result_t
parse_enum_or_other(cfg_parser_t *pctx, const cfg_type_t *enumtype,
const cfg_type_t *othertype, cfg_obj_t **ret)
{
isc_result_t result;
CHECK(cfg_peektoken(pctx, 0));
if (pctx->token.type == isc_tokentype_string &&
is_enum(pctx->token.value.as_pointer, enumtype->of)) {
CHECK(parse_enum(pctx, enumtype, ret));
} else {
CHECK(parse(pctx, othertype, ret));
}
cleanup:
return (result);
}
/*
* Print a string object.
*/
static void
print_ustring(cfg_printer_t *pctx, cfg_obj_t *obj) {
print(pctx, obj->value.string.base, obj->value.string.length);
}
static void
print_qstring(cfg_printer_t *pctx, cfg_obj_t *obj) {
print(pctx, "\"", 1);
print_ustring(pctx, obj);
print(pctx, "\"", 1);
}
static void
free_string(cfg_parser_t *pctx, cfg_obj_t *obj) {
isc_mem_put(pctx->mctx, obj->value.string.base,
obj->value.string.length + 1);
}
isc_boolean_t
cfg_obj_isstring(cfg_obj_t *obj) {
REQUIRE(obj != NULL);
return (ISC_TF(obj->type->rep == &cfg_rep_string));
}
char *
cfg_obj_asstring(cfg_obj_t *obj) {
REQUIRE(obj != NULL && obj->type->rep == &cfg_rep_string);
return (obj->value.string.base);
}
isc_boolean_t
cfg_obj_isboolean(cfg_obj_t *obj) {
REQUIRE(obj != NULL);
return (ISC_TF(obj->type->rep == &cfg_rep_boolean));
}
isc_boolean_t
cfg_obj_asboolean(cfg_obj_t *obj) {
REQUIRE(obj != NULL && obj->type->rep == &cfg_rep_boolean);
return (obj->value.boolean);
}
/* Quoted string only */
static cfg_type_t cfg_type_qstring = {
"quoted_string", parse_qstring, print_qstring, &cfg_rep_string, NULL };
/* Unquoted string only */
static cfg_type_t cfg_type_ustring = {
"string", parse_ustring, print_ustring, &cfg_rep_string, NULL };
/* Any string (quoted or unquoted); printed with quotes */
static cfg_type_t cfg_type_astring = {
"string", parse_astring, print_qstring, &cfg_rep_string, NULL };
/*
* boolean
*/
static isc_result_t
parse_boolean(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret)
{
isc_result_t result;
isc_boolean_t value;
cfg_obj_t *obj = NULL;
UNUSED(type);
result = cfg_gettoken(pctx, 0);
if (result != ISC_R_SUCCESS)
return (result);
if (pctx->token.type != isc_tokentype_string)
goto bad_boolean;
if ((strcasecmp(pctx->token.value.as_pointer, "true") == 0) ||
(strcasecmp(pctx->token.value.as_pointer, "yes") == 0) ||
(strcmp(pctx->token.value.as_pointer, "1") == 0)) {
value = ISC_TRUE;
} else if ((strcasecmp(pctx->token.value.as_pointer, "false") == 0) ||
(strcasecmp(pctx->token.value.as_pointer, "no") == 0) ||
(strcmp(pctx->token.value.as_pointer, "0") == 0)) {
value = ISC_FALSE;
} else {
goto bad_boolean;
}
CHECK(create_cfgobj(pctx, &cfg_type_boolean, &obj));
obj->value.boolean = value;
*ret = obj;
return (result);
bad_boolean:
parser_error(pctx, LOG_NEAR, "boolean expected");
return (ISC_R_UNEXPECTEDTOKEN);
cleanup:
return (result);
}
static void
print_boolean(cfg_printer_t *pctx, cfg_obj_t *obj) {
if (obj->value.boolean)
print(pctx, "yes", 3);
else
print(pctx, "no", 2);
}
static cfg_type_t cfg_type_boolean = {
"boolean", parse_boolean, print_boolean, &cfg_rep_boolean, NULL };
static const char *dialup_enums[] = {
"notify", "notify-passive", "refresh", "passive", NULL };
static isc_result_t
parse_dialup_type(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret) {
return (parse_enum_or_other(pctx, type, &cfg_type_boolean, ret));
}
static cfg_type_t cfg_type_dialuptype = {
"dialuptype", parse_dialup_type, print_ustring,
&cfg_rep_string, dialup_enums
};
static const char *notify_enums[] = { "explicit", NULL };
static isc_result_t
parse_notify_type(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret) {
return (parse_enum_or_other(pctx, type, &cfg_type_boolean, ret));
}
static cfg_type_t cfg_type_notifytype = {
"notifytype", parse_notify_type, print_ustring,
&cfg_rep_string, notify_enums,
};
static keyword_type_t key_kw = { "key", &cfg_type_astring };
LIBISCCFG_EXTERNAL_DATA cfg_type_t cfg_type_keyref = {
"keyref", parse_keyvalue, print_keyvalue,
&cfg_rep_string, &key_kw
};
static cfg_type_t cfg_type_optional_keyref = {
"optional_keyref", parse_optional_keyvalue, print_keyvalue,
&cfg_rep_string, &key_kw
};
/*
* Lists.
*/
static isc_result_t
create_list(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **obj) {
isc_result_t result;
CHECK(create_cfgobj(pctx, type, obj));
ISC_LIST_INIT((*obj)->value.list);
cleanup:
return (result);
}
static isc_result_t
create_listelt(cfg_parser_t *pctx, cfg_listelt_t **eltp) {
cfg_listelt_t *elt;
elt = isc_mem_get(pctx->mctx, sizeof(*elt));
if (elt == NULL)
return (ISC_R_NOMEMORY);
elt->obj = NULL;
ISC_LINK_INIT(elt, link);
*eltp = elt;
return (ISC_R_SUCCESS);
}
static void
free_list_elt(cfg_parser_t *pctx, cfg_listelt_t *elt) {
cfg_obj_destroy(pctx, &elt->obj);
isc_mem_put(pctx->mctx, elt, sizeof(*elt));
}
static void
free_list(cfg_parser_t *pctx, cfg_obj_t *obj) {
cfg_listelt_t *elt, *next;
for (elt = ISC_LIST_HEAD(obj->value.list);
elt != NULL;
elt = next)
{
next = ISC_LIST_NEXT(elt, link);
free_list_elt(pctx, elt);
}
}
static isc_result_t
parse_list_elt(cfg_parser_t *pctx, const cfg_type_t *elttype,
cfg_listelt_t **ret)
{
isc_result_t result;
cfg_listelt_t *elt = NULL;
cfg_obj_t *value = NULL;
CHECK(create_listelt(pctx, &elt));
result = parse(pctx, elttype, &value);
if (result != ISC_R_SUCCESS)
goto cleanup;
elt->obj = value;
*ret = elt;
return (ISC_R_SUCCESS);
cleanup:
isc_mem_put(pctx->mctx, elt, sizeof(*elt));
return (result);
}
/*
* Parse a homogeneous list whose elements are of type 'elttype'
* and where each element is terminated by a semicolon.
*/
static isc_result_t
parse_list(cfg_parser_t *pctx, const cfg_type_t *listtype, cfg_obj_t **ret)
{
cfg_obj_t *listobj = NULL;
const cfg_type_t *listof = listtype->of;
isc_result_t result;
CHECK(create_list(pctx, listtype, &listobj));
for (;;) {
cfg_listelt_t *elt = NULL;
CHECK(cfg_peektoken(pctx, 0));
if (pctx->token.type == isc_tokentype_special &&
pctx->token.value.as_char == '}')
break;
CHECK(parse_list_elt(pctx, listof, &elt));
CHECK(parse_semicolon(pctx));
ISC_LIST_APPEND(listobj->value.list, elt, link);
}
*ret = listobj;
return (ISC_R_SUCCESS);
cleanup:
CLEANUP_OBJ(listobj);
return (result);
}
static void
print_list(cfg_printer_t *pctx, cfg_obj_t *obj) {
cfg_list_t *list = &obj->value.list;
cfg_listelt_t *elt;
for (elt = ISC_LIST_HEAD(*list);
elt != NULL;
elt = ISC_LIST_NEXT(elt, link)) {
print_indent(pctx);
print_obj(pctx, elt->obj);
print(pctx, ";\n", 2);
}
}
static isc_result_t
parse_bracketed_list(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret)
{
isc_result_t result;
CHECK(parse_special(pctx, '{'));
CHECK(parse_list(pctx, type, ret));
CHECK(parse_special(pctx, '}'));
cleanup:
return (result);
}
static void
print_bracketed_list(cfg_printer_t *pctx, cfg_obj_t *obj) {
print_open(pctx);
print_list(pctx, obj);
print_close(pctx);
}
/*
* Parse a homogeneous list whose elements are of type 'elttype'
* and where elements are separated by space. The list ends
* before the first semicolon.
*/
static isc_result_t
parse_spacelist(cfg_parser_t *pctx, const cfg_type_t *listtype, cfg_obj_t **ret)
{
cfg_obj_t *listobj = NULL;
const cfg_type_t *listof = listtype->of;
isc_result_t result;
CHECK(create_list(pctx, listtype, &listobj));
for (;;) {
cfg_listelt_t *elt = NULL;
CHECK(cfg_peektoken(pctx, 0));
if (pctx->token.type == isc_tokentype_special &&
pctx->token.value.as_char == ';')
break;
CHECK(parse_list_elt(pctx, listof, &elt));
ISC_LIST_APPEND(listobj->value.list, elt, link);
}
*ret = listobj;
return (ISC_R_SUCCESS);
cleanup:
CLEANUP_OBJ(listobj);
return (result);
}
static void
print_spacelist(cfg_printer_t *pctx, cfg_obj_t *obj) {
cfg_list_t *list = &obj->value.list;
cfg_listelt_t *elt;
for (elt = ISC_LIST_HEAD(*list);
elt != NULL;
elt = ISC_LIST_NEXT(elt, link)) {
print_obj(pctx, elt->obj);
if (ISC_LIST_NEXT(elt, link) != NULL)
print(pctx, " ", 1);
}
}
isc_boolean_t
cfg_obj_islist(cfg_obj_t *obj) {
REQUIRE(obj != NULL);
return (ISC_TF(obj->type->rep == &cfg_rep_list));
}
cfg_listelt_t *
cfg_list_first(cfg_obj_t *obj) {
REQUIRE(obj == NULL || obj->type->rep == &cfg_rep_list);
if (obj == NULL)
return (NULL);
return (ISC_LIST_HEAD(obj->value.list));
}
cfg_listelt_t *
cfg_list_next(cfg_listelt_t *elt) {
REQUIRE(elt != NULL);
return (ISC_LIST_NEXT(elt, link));
}
cfg_obj_t *
cfg_listelt_value(cfg_listelt_t *elt) {
REQUIRE(elt != NULL);
return (elt->obj);
}
/*
* Maps.
*/
/*
* Parse a map body. That's something like
*
* "foo 1; bar { glub; }; zap true; zap false;"
*
* i.e., a sequence of option names followed by values and
* terminated by semicolons. Used for the top level of
* the named.conf syntax, as well as for the body of the
* options, view, zone, and other statements.
*/
static isc_result_t
parse_mapbody(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret)
{
const cfg_clausedef_t * const *clausesets = type->of;
isc_result_t result;
const cfg_clausedef_t * const *clauseset;
const cfg_clausedef_t *clause;
cfg_obj_t *value = NULL;
cfg_obj_t *obj = NULL;
cfg_obj_t *eltobj = NULL;
cfg_obj_t *includename = NULL;
isc_symvalue_t symval;
cfg_list_t *list = NULL;
CHECK(create_map(pctx, type, &obj));
obj->value.map.clausesets = clausesets;
for (;;) {
cfg_listelt_t *elt;
redo:
/*
* Parse the option name and see if it is known.
*/
CHECK(cfg_gettoken(pctx, 0));
if (pctx->token.type != isc_tokentype_string) {
cfg_ungettoken(pctx);
break;
}
/*
* We accept "include" statements wherever a map body
* clause can occur.
*/
if (strcasecmp(pctx->token.value.as_pointer, "include") == 0) {
/*
* Turn the file name into a temporary configuration
* object just so that it is not overwritten by the
* semicolon token.
*/
CHECK(parse(pctx, &cfg_type_qstring, &includename));
CHECK(parse_semicolon(pctx));
CHECK(parser_openfile(pctx, includename->
value.string.base));
cfg_obj_destroy(pctx, &includename);
goto redo;
}
clause = NULL;
for (clauseset = clausesets; *clauseset != NULL; clauseset++) {
for (clause = *clauseset;
clause->name != NULL;
clause++) {
if (strcasecmp(pctx->token.value.as_pointer,
clause->name) == 0)
goto done;
}
}
done:
if (clause == NULL || clause->name == NULL) {
parser_error(pctx, LOG_NOPREP, "unknown option");
/*
* Try to recover by parsing this option as an unknown
* option and discarding it.
*/
CHECK(parse(pctx, &cfg_type_unsupported, &eltobj));
cfg_obj_destroy(pctx, &eltobj);
CHECK(parse_semicolon(pctx));
continue;
}
/* Clause is known. */
/* Issue warnings if appropriate */
if ((clause->flags & CFG_CLAUSEFLAG_OBSOLETE) != 0)
parser_warning(pctx, 0, "option '%s' is obsolete",
clause->name);
if ((clause->flags & CFG_CLAUSEFLAG_NOTIMP) != 0)
parser_warning(pctx, 0, "option '%s' is "
"not implemented",
clause->name);
if ((clause->flags & CFG_CLAUSEFLAG_NYI) != 0)
parser_warning(pctx, 0, "option '%s' is "
"not yet implemented", clause->name);
/*
* Don't log options with CFG_CLAUSEFLAG_NEWDEFAULT
* set here - we need to log the *lack* of such an option,
* not its presence.
*/
/* See if the clause already has a value; if not create one. */
result = isc_symtab_lookup(obj->value.map.symtab,
clause->name, 0, &symval);
if ((clause->flags & CFG_CLAUSEFLAG_MULTI) != 0) {
/* Multivalued clause */
cfg_obj_t *listobj = NULL;
if (result == ISC_R_NOTFOUND) {
CHECK(create_list(pctx,
&cfg_type_implicitlist,
&listobj));
symval.as_pointer = listobj;
result = isc_symtab_define(obj->value.
map.symtab,
clause->name,
1, symval,
isc_symexists_reject);
if (result != ISC_R_SUCCESS) {
parser_error(pctx, LOG_NEAR,
"isc_symtab_define(%s) "
"failed", clause->name);
isc_mem_put(pctx->mctx, list,
sizeof(cfg_list_t));
goto cleanup;
}
} else {
INSIST(result == ISC_R_SUCCESS);
listobj = symval.as_pointer;
}
elt = NULL;
CHECK(parse_list_elt(pctx, clause->type, &elt));
CHECK(parse_semicolon(pctx));
ISC_LIST_APPEND(listobj->value.list, elt, link);
} else {
/* Single-valued clause */
if (result == ISC_R_NOTFOUND) {
isc_boolean_t callback =
ISC_TF((clause->flags &
CFG_CLAUSEFLAG_CALLBACK) != 0);
CHECK(parse_symtab_elt(pctx, clause->name,
clause->type,
obj->value.map.symtab,
callback));
CHECK(parse_semicolon(pctx));
} else if (result == ISC_R_SUCCESS) {
parser_error(pctx, LOG_NEAR, "'%s' redefined",
clause->name);
result = ISC_R_EXISTS;
goto cleanup;
} else {
parser_error(pctx, LOG_NEAR,
"isc_symtab_define() failed");
goto cleanup;
}
}
}
*ret = obj;
return (ISC_R_SUCCESS);
cleanup:
CLEANUP_OBJ(value);
CLEANUP_OBJ(obj);
CLEANUP_OBJ(eltobj);
CLEANUP_OBJ(includename);
return (result);
}
static isc_result_t
parse_symtab_elt(cfg_parser_t *pctx, const char *name,
cfg_type_t *elttype, isc_symtab_t *symtab,
isc_boolean_t callback)
{
isc_result_t result;
cfg_obj_t *obj = NULL;
isc_symvalue_t symval;
CHECK(parse(pctx, elttype, &obj));
if (callback && pctx->callback != NULL)
CHECK(pctx->callback(name, obj, pctx->callbackarg));
symval.as_pointer = obj;
CHECK(isc_symtab_define(symtab, name,
1, symval,
isc_symexists_reject));
obj = NULL;
return (ISC_R_SUCCESS);
cleanup:
CLEANUP_OBJ(obj);
return (result);
}
/*
* Parse a map; e.g., "{ foo 1; bar { glub; }; zap true; zap false; }"
*/
static isc_result_t
parse_map(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret)
{
isc_result_t result;
CHECK(parse_special(pctx, '{'));
CHECK(parse_mapbody(pctx, type, ret));
CHECK(parse_special(pctx, '}'));
cleanup:
return (result);
}
/*
* Subroutine for parse_named_map() and parse_addressed_map().
*/
static isc_result_t
parse_any_named_map(cfg_parser_t *pctx, cfg_type_t *nametype, const cfg_type_t *type,
cfg_obj_t **ret)
{
isc_result_t result;
cfg_obj_t *idobj = NULL;
cfg_obj_t *mapobj = NULL;
CHECK(parse(pctx, nametype, &idobj));
CHECK(parse_map(pctx, type, &mapobj));
mapobj->value.map.id = idobj;
idobj = NULL;
*ret = mapobj;
cleanup:
CLEANUP_OBJ(idobj);
return (result);
}
/*
* Parse a map identified by a string name. E.g., "name { foo 1; }".
* Used for the "key" and "channel" statements.
*/
static isc_result_t
parse_named_map(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret) {
return (parse_any_named_map(pctx, &cfg_type_astring, type, ret));
}
/*
* Parse a map identified by a network address.
* Used for the "server" statement.
*/
static isc_result_t
parse_addressed_map(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret) {
return (parse_any_named_map(pctx, &cfg_type_netaddr, type, ret));
}
static void
print_mapbody(cfg_printer_t *pctx, cfg_obj_t *obj) {
isc_result_t result = ISC_R_SUCCESS;
const cfg_clausedef_t * const *clauseset;
for (clauseset = obj->value.map.clausesets;
*clauseset != NULL;
clauseset++)
{
isc_symvalue_t symval;
const cfg_clausedef_t *clause;
for (clause = *clauseset;
clause->name != NULL;
clause++) {
result = isc_symtab_lookup(obj->value.map.symtab,
clause->name, 0, &symval);
if (result == ISC_R_SUCCESS) {
cfg_obj_t *obj = symval.as_pointer;
if (obj->type == &cfg_type_implicitlist) {
/* Multivalued. */
cfg_list_t *list = &obj->value.list;
cfg_listelt_t *elt;
for (elt = ISC_LIST_HEAD(*list);
elt != NULL;
elt = ISC_LIST_NEXT(elt, link)) {
print_indent(pctx);
print(pctx, clause->name,
strlen(clause->name));
print(pctx, " ", 1);
print_obj(pctx, elt->obj);
print(pctx, ";\n", 2);
}
} else {
/* Single-valued. */
print_indent(pctx);
print(pctx, clause->name,
strlen(clause->name));
print(pctx, " ", 1);
print_obj(pctx, obj);
print(pctx, ";\n", 2);
}
} else if (result == ISC_R_NOTFOUND) {
; /* do nothing */
} else {
INSIST(0);
}
}
}
}
static void
print_map(cfg_printer_t *pctx, cfg_obj_t *obj) {
if (obj->value.map.id != NULL) {
print_obj(pctx, obj->value.map.id);
print(pctx, " ", 1);
}
print_open(pctx);
print_mapbody(pctx, obj);
print_close(pctx);
}
isc_boolean_t
cfg_obj_ismap(cfg_obj_t *obj) {
REQUIRE(obj != NULL);
return (ISC_TF(obj->type->rep == &cfg_rep_map));
}
isc_result_t
cfg_map_get(cfg_obj_t *mapobj, const char* name, cfg_obj_t **obj) {
isc_result_t result;
isc_symvalue_t val;
cfg_map_t *map;
REQUIRE(mapobj != NULL && mapobj->type->rep == &cfg_rep_map);
REQUIRE(name != NULL);
REQUIRE(obj != NULL && *obj == NULL);
map = &mapobj->value.map;
result = isc_symtab_lookup(map->symtab, name, MAP_SYM, &val);
if (result != ISC_R_SUCCESS)
return (result);
*obj = val.as_pointer;
return (ISC_R_SUCCESS);
}
cfg_obj_t *
cfg_map_getname(cfg_obj_t *mapobj) {
REQUIRE(mapobj != NULL && mapobj->type->rep == &cfg_rep_map);
return (mapobj->value.map.id);
}
/* Parse an arbitrary token, storing its raw text representation. */
static isc_result_t
parse_token(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret) {
cfg_obj_t *obj = NULL;
isc_result_t result;
isc_region_t r;
UNUSED(type);
CHECK(create_cfgobj(pctx, &cfg_type_token, &obj));
CHECK(cfg_gettoken(pctx, QSTRING));
if (pctx->token.type == isc_tokentype_eof) {
cfg_ungettoken(pctx);
result = ISC_R_EOF;
goto cleanup;
}
isc_lex_getlasttokentext(pctx->lexer, &pctx->token, &r);
obj->value.string.base = isc_mem_get(pctx->mctx, r.length + 1);
obj->value.string.length = r.length;
memcpy(obj->value.string.base, r.base, r.length);
obj->value.string.base[r.length] = '\0';
*ret = obj;
cleanup:
return (result);
}
static cfg_type_t cfg_type_token = {
"token", parse_token, print_ustring, &cfg_rep_string, NULL };
/*
* An unsupported option. This is just a list of tokens with balanced braces
* ending in a semicolon.
*/
static isc_result_t
parse_unsupported(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret) {
cfg_obj_t *listobj = NULL;
isc_result_t result;
int braces = 0;
CHECK(create_list(pctx, type, &listobj));
for (;;) {
cfg_listelt_t *elt = NULL;
CHECK(cfg_peektoken(pctx, 0));
if (pctx->token.type == isc_tokentype_special) {
if (pctx->token.value.as_char == '{')
braces++;
else if (pctx->token.value.as_char == '}')
braces--;
else if (pctx->token.value.as_char == ';')
if (braces == 0)
break;
}
if (pctx->token.type == isc_tokentype_eof || braces < 0) {
parser_error(pctx, LOG_NEAR, "unexpected token");
result = ISC_R_UNEXPECTEDTOKEN;
goto cleanup;
}
CHECK(parse_list_elt(pctx, &cfg_type_token, &elt));
ISC_LIST_APPEND(listobj->value.list, elt, link);
}
INSIST(braces == 0);
*ret = listobj;
return (ISC_R_SUCCESS);
cleanup:
CLEANUP_OBJ(listobj);
return (result);
}
static cfg_type_t cfg_type_unsupported = {
"unsupported", parse_unsupported, print_spacelist,
&cfg_rep_list, NULL
};
/*
* A "controls" statement is represented as a map with the multivalued
* "inet" and "unix" clauses. Inet controls are tuples; unix controls
* are cfg_unsupported_t objects.
*/
static keyword_type_t controls_allow_kw = {
"allow", &cfg_type_bracketed_aml };
static cfg_type_t cfg_type_controls_allow = {
"controls_allow", parse_keyvalue,
print_keyvalue, &cfg_rep_list, &controls_allow_kw
};
static keyword_type_t controls_keys_kw = {
"keys", &cfg_type_keylist };
static cfg_type_t cfg_type_controls_keys = {
"controls_keys", parse_optional_keyvalue,
print_keyvalue, &cfg_rep_list, &controls_keys_kw
};
static cfg_tuplefielddef_t inetcontrol_fields[] = {
{ "address", &cfg_type_controls_sockaddr, 0 },
{ "allow", &cfg_type_controls_allow, 0 },
{ "keys", &cfg_type_controls_keys, 0 },
{ NULL, NULL, 0 }
};
static cfg_type_t cfg_type_inetcontrol = {
"inetcontrol", parse_tuple, print_tuple, &cfg_rep_tuple,
inetcontrol_fields
};
static cfg_clausedef_t
controls_clauses[] = {
{ "inet", &cfg_type_inetcontrol, CFG_CLAUSEFLAG_MULTI },
{ "unix", &cfg_type_unsupported,
CFG_CLAUSEFLAG_MULTI|CFG_CLAUSEFLAG_NOTIMP },
{ NULL, NULL, 0 }
};
static cfg_clausedef_t *
controls_clausesets[] = {
controls_clauses,
NULL
};
static cfg_type_t cfg_type_controls = {
"controls", parse_map, print_map, &cfg_rep_map, &controls_clausesets
};
/*
* An optional class, as used in view and zone statements.
*/
static isc_result_t
parse_optional_class(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret) {
isc_result_t result;
UNUSED(type);
CHECK(cfg_peektoken(pctx, 0));
if (pctx->token.type == isc_tokentype_string)
CHECK(parse(pctx, &cfg_type_ustring, ret));
else
CHECK(parse(pctx, &cfg_type_void, ret));
cleanup:
return (result);
}
static cfg_type_t cfg_type_optional_class = {
"optional_class", parse_optional_class, NULL, NULL, NULL };
/*
* Try interpreting the current token as a network address.
*
* If WILDOK is set in flags, "*" can be used as a wildcard
* and at least one of V4OK and V6OK must also be set. The
* "*" is interpreted as the IPv4 wildcard address if V4OK is
* set (including the case where V4OK and V6OK are both set),
* and the IPv6 wildcard address otherwise.
*/
static isc_result_t
token_addr(cfg_parser_t *pctx, unsigned int flags, isc_netaddr_t *na) {
char *s;
struct in_addr in4a;
struct in6_addr in6a;
if (pctx->token.type != isc_tokentype_string)
return (ISC_R_UNEXPECTEDTOKEN);
s = pctx->token.value.as_pointer;
if ((flags & WILDOK) != 0 && strcmp(s, "*") == 0) {
if ((flags & V4OK) != 0) {
isc_netaddr_any(na);
return (ISC_R_SUCCESS);
} else if ((flags & V6OK) != 0) {
isc_netaddr_any6(na);
return (ISC_R_SUCCESS);
} else {
INSIST(0);
}
} else {
if ((flags & (V4OK | V4PREFIXOK)) != 0) {
if (inet_pton(AF_INET, s, &in4a) == 1) {
isc_netaddr_fromin(na, &in4a);
return (ISC_R_SUCCESS);
}
}
if ((flags & V4PREFIXOK) != 0 &&
strlen(s) <= 15) {
char buf[64];
int i;
strcpy(buf, s);
for (i = 0; i < 3; i++) {
strcat(buf, ".0");
if (inet_pton(AF_INET, buf, &in4a) == 1) {
isc_netaddr_fromin(na, &in4a);
return (ISC_R_SUCCESS);
}
}
}
if (flags & V6OK) {
if (inet_pton(AF_INET6, s, &in6a) == 1) {
isc_netaddr_fromin6(na, &in6a);
return (ISC_R_SUCCESS);
}
}
}
return (ISC_R_NOTFOUND); /* XXX */
}
static isc_result_t
get_addr(cfg_parser_t *pctx, unsigned int flags, isc_netaddr_t *na) {
isc_result_t result;
CHECK(cfg_gettoken(pctx, 0));
CHECK(token_addr(pctx, flags, na));
cleanup:
return (result);
}
static isc_boolean_t
looking_at_netaddr(cfg_parser_t *pctx, unsigned int flags) {
isc_result_t result;
isc_netaddr_t na_dummy;
result = token_addr(pctx, flags, &na_dummy);
return (ISC_TF(result == ISC_R_SUCCESS));
}
static isc_result_t
get_port(cfg_parser_t *pctx, unsigned int flags, in_port_t *port) {
isc_result_t result;
CHECK(cfg_gettoken(pctx, ISC_LEXOPT_NUMBER));
if ((flags & WILDOK) != 0 &&
pctx->token.type == isc_tokentype_string &&
strcmp(pctx->token.value.as_pointer, "*") == 0) {
*port = 0;
return (ISC_R_SUCCESS);
}
if (pctx->token.type != isc_tokentype_number) {
parser_error(pctx, LOG_NEAR,
"expected port number or '*'");
return (ISC_R_UNEXPECTEDTOKEN);
}
if (pctx->token.value.as_ulong >= 65536) {
parser_error(pctx, LOG_NEAR,
"port number out of range");
return (ISC_R_UNEXPECTEDTOKEN);
}
*port = (in_port_t)(pctx->token.value.as_ulong);
return (ISC_R_SUCCESS);
cleanup:
return (result);
}
static isc_result_t
parse_querysource(cfg_parser_t *pctx, int flags, cfg_obj_t **ret) {
isc_result_t result;
cfg_obj_t *obj = NULL;
isc_netaddr_t netaddr;
in_port_t port;
unsigned int have_address = 0;
unsigned int have_port = 0;
if ((flags & V4OK) != 0)
isc_netaddr_any(&netaddr);
else if ((flags & V6OK) != 0)
isc_netaddr_any6(&netaddr);
else
INSIST(0);
port = 0;
CHECK(create_cfgobj(pctx, &cfg_type_querysource, &obj));
for (;;) {
CHECK(cfg_peektoken(pctx, 0));
if (pctx->token.type == isc_tokentype_string) {
if (strcasecmp(pctx->token.value.as_pointer,
"address") == 0)
{
/* read "address" */
CHECK(cfg_gettoken(pctx, 0));
CHECK(get_addr(pctx, flags|WILDOK, &netaddr));
have_address++;
} else if (strcasecmp(pctx->token.value.as_pointer,
"port") == 0)
{
/* read "port" */
CHECK(cfg_gettoken(pctx, 0));
CHECK(get_port(pctx, WILDOK, &port));
have_port++;
} else {
parser_error(pctx, LOG_NEAR,
"expected 'address' or 'port'");
return (ISC_R_UNEXPECTEDTOKEN);
}
} else
break;
}
if (have_address > 1 || have_port > 1 ||
have_address + have_port == 0) {
parser_error(pctx, 0, "expected one address and/or port");
return (ISC_R_UNEXPECTEDTOKEN);
}
isc_sockaddr_fromnetaddr(&obj->value.sockaddr, &netaddr, port);
*ret = obj;
return (ISC_R_SUCCESS);
cleanup:
parser_error(pctx, LOG_NEAR, "invalid query source");
CLEANUP_OBJ(obj);
return (result);
}
static isc_result_t
parse_querysource4(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret) {
UNUSED(type);
return (parse_querysource(pctx, V4OK, ret));
}
static isc_result_t
parse_querysource6(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret) {
UNUSED(type);
return (parse_querysource(pctx, V6OK, ret));
}
static void
print_isc_netaddr(cfg_printer_t *pctx, isc_netaddr_t *na) {
isc_result_t result;
char text[128];
isc_buffer_t buf;
isc_buffer_init(&buf, text, sizeof(text));
result = isc_netaddr_totext(na, &buf);
RUNTIME_CHECK(result == ISC_R_SUCCESS);
print(pctx, isc_buffer_base(&buf), isc_buffer_usedlength(&buf));
}
static void
print_querysource(cfg_printer_t *pctx, cfg_obj_t *obj) {
isc_netaddr_t na;
isc_netaddr_fromsockaddr(&na, &obj->value.sockaddr);
print(pctx, "address ", 8);
print_isc_netaddr(pctx, &na);
print(pctx, " port ", 6);
print_uint(pctx, isc_sockaddr_getport(&obj->value.sockaddr));
}
static cfg_type_t cfg_type_querysource4 = {
"querysource4", parse_querysource4, NULL, NULL, NULL };
static cfg_type_t cfg_type_querysource6 = {
"querysource6", parse_querysource6, NULL, NULL, NULL };
static cfg_type_t cfg_type_querysource = {
"querysource", NULL, print_querysource, &cfg_rep_sockaddr, NULL };
/* netaddr */
static isc_result_t
parse_netaddr(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret) {
isc_result_t result;
cfg_obj_t *obj = NULL;
isc_netaddr_t netaddr;
UNUSED(type);
CHECK(create_cfgobj(pctx, type, &obj));
CHECK(get_addr(pctx, V4OK|V6OK, &netaddr));
isc_sockaddr_fromnetaddr(&obj->value.sockaddr, &netaddr, 0);
*ret = obj;
return (ISC_R_SUCCESS);
cleanup:
parser_error(pctx, LOG_NEAR, "expected IP address");
CLEANUP_OBJ(obj);
return (result);
}
static cfg_type_t cfg_type_netaddr = {
"netaddr", parse_netaddr, print_sockaddr, &cfg_rep_sockaddr, NULL };
/* netprefix */
static isc_result_t
parse_netprefix(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret) {
cfg_obj_t *obj = NULL;
isc_result_t result;
isc_netaddr_t netaddr;
unsigned int prefixlen;
UNUSED(type);
CHECK(get_addr(pctx, V4OK|V4PREFIXOK|V6OK, &netaddr));
CHECK(cfg_peektoken(pctx, 0));
if (pctx->token.type == isc_tokentype_special &&
pctx->token.value.as_char == '/') {
CHECK(cfg_gettoken(pctx, 0)); /* read "/" */
CHECK(cfg_gettoken(pctx, ISC_LEXOPT_NUMBER));
if (pctx->token.type != isc_tokentype_number) {
parser_error(pctx, LOG_NEAR,
"expected prefix length");
return (ISC_R_UNEXPECTEDTOKEN);
}
prefixlen = pctx->token.value.as_ulong;
} else {
switch (netaddr.family) {
case AF_INET:
prefixlen = 32;
break;
case AF_INET6:
prefixlen = 128;
break;
default:
prefixlen = 0;
INSIST(0);
break;
}
}
CHECK(create_cfgobj(pctx, &cfg_type_netprefix, &obj));
obj->value.netprefix.address = netaddr;
obj->value.netprefix.prefixlen = prefixlen;
*ret = obj;
return (ISC_R_SUCCESS);
cleanup:
parser_error(pctx, LOG_NEAR, "expected network prefix");
return (result);
}
static void
print_netprefix(cfg_printer_t *pctx, cfg_obj_t *obj) {
cfg_netprefix_t *p = &obj->value.netprefix;
print_isc_netaddr(pctx, &p->address);
print(pctx, "/", 1);
print_uint(pctx, p->prefixlen);
}
isc_boolean_t
cfg_obj_isnetprefix(cfg_obj_t *obj) {
REQUIRE(obj != NULL);
return (ISC_TF(obj->type->rep == &cfg_rep_netprefix));
}
void
cfg_obj_asnetprefix(cfg_obj_t *obj, isc_netaddr_t *netaddr,
unsigned int *prefixlen) {
REQUIRE(obj != NULL && obj->type->rep == &cfg_rep_netprefix);
*netaddr = obj->value.netprefix.address;
*prefixlen = obj->value.netprefix.prefixlen;
}
static cfg_type_t cfg_type_netprefix = {
"netprefix", parse_netprefix, print_netprefix, &cfg_rep_netprefix, NULL };
/* addrmatchelt */
static isc_result_t
parse_addrmatchelt(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret) {
isc_result_t result;
UNUSED(type);
CHECK(cfg_peektoken(pctx, QSTRING));
if (pctx->token.type == isc_tokentype_string ||
pctx->token.type == isc_tokentype_qstring) {
if (pctx->token.type == isc_tokentype_string &&
(strcasecmp(pctx->token.value.as_pointer, "key") == 0)) {
CHECK(parse(pctx, &cfg_type_keyref, ret));
} else {
if (looking_at_netaddr(pctx, V4OK|V4PREFIXOK|V6OK)) {
CHECK(parse_netprefix(pctx, NULL, ret));
} else {
CHECK(parse_astring(pctx, NULL, ret));
}
}
} else if (pctx->token.type == isc_tokentype_special) {
if (pctx->token.value.as_char == '{') {
/* Nested match list. */
CHECK(parse(pctx, &cfg_type_bracketed_aml, ret));
} else if (pctx->token.value.as_char == '!') {
CHECK(cfg_gettoken(pctx, 0)); /* read "!" */
CHECK(parse(pctx, &cfg_type_negated, ret));
} else {
goto bad;
}
} else {
bad:
parser_error(pctx, LOG_NEAR,
"expected IP match list element");
return (ISC_R_UNEXPECTEDTOKEN);
}
cleanup:
return (result);
}
/*
* A negated address match list element (like "! 10.0.0.1").
* Somewhat sneakily, the caller is expected to parse the
* "!", but not to print it.
*/
static cfg_tuplefielddef_t negated_fields[] = {
{ "value", &cfg_type_addrmatchelt, 0 },
{ NULL, NULL, 0 }
};
static void
print_negated(cfg_printer_t *pctx, cfg_obj_t *obj) {
print(pctx, "!", 1);
print_tuple(pctx, obj);
}
static cfg_type_t cfg_type_negated = {
"negated", parse_tuple, print_negated, &cfg_rep_tuple,
&negated_fields
};
/* an address match list element */
static cfg_type_t cfg_type_addrmatchelt = {
"address_match_element", parse_addrmatchelt, NULL, NULL, NULL };
static cfg_type_t cfg_type_bracketed_aml = {
"bracketed_aml", parse_bracketed_list, print_bracketed_list,
&cfg_rep_list, &cfg_type_addrmatchelt
};
static isc_result_t
parse_sockaddrsub(cfg_parser_t *pctx, const cfg_type_t *type,
int flags, cfg_obj_t **ret)
{
isc_result_t result;
isc_netaddr_t netaddr;
in_port_t port = 0;
cfg_obj_t *obj = NULL;
CHECK(create_cfgobj(pctx, type, &obj));
CHECK(get_addr(pctx, flags, &netaddr));
CHECK(cfg_peektoken(pctx, 0));
if (pctx->token.type == isc_tokentype_string &&
strcasecmp(pctx->token.value.as_pointer, "port") == 0) {
CHECK(cfg_gettoken(pctx, 0)); /* read "port" */
CHECK(get_port(pctx, flags, &port));
}
isc_sockaddr_fromnetaddr(&obj->value.sockaddr, &netaddr, port);
*ret = obj;
return (ISC_R_SUCCESS);
cleanup:
CLEANUP_OBJ(obj);
return (result);
}
static isc_result_t
parse_sockaddr4wild(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret) {
UNUSED(type);
return (parse_sockaddrsub(pctx, &cfg_type_sockaddr4wild,
WILDOK|V4OK, ret));
}
static isc_result_t
parse_sockaddr6wild(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret) {
UNUSED(type);
return (parse_sockaddrsub(pctx, &cfg_type_sockaddr6wild,
WILDOK|V6OK, ret));
}
static isc_result_t
parse_sockaddr(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret) {
UNUSED(type);
return (parse_sockaddrsub(pctx, &cfg_type_sockaddr,
V4OK|V6OK, ret));
}
/*
* The socket address syntax in the "controls" statement is silly.
* It allows both socket address families, but also allows "*",
* whis is gratuitously interpreted as the IPv4 wildcard address.
*/
static isc_result_t
parse_controls_sockaddr(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret) {
UNUSED(type);
return (parse_sockaddrsub(pctx, &cfg_type_sockaddr,
V4OK|V6OK|WILDOK, ret));
}
static void
print_sockaddr(cfg_printer_t *pctx, cfg_obj_t *obj) {
isc_netaddr_t netaddr;
in_port_t port;
char buf[ISC_NETADDR_FORMATSIZE];
isc_netaddr_fromsockaddr(&netaddr, &obj->value.sockaddr);
isc_netaddr_format(&netaddr, buf, sizeof(buf));
print(pctx, buf, strlen(buf));
port = isc_sockaddr_getport(&obj->value.sockaddr);
if (port != 0) {
print(pctx, " port ", 6);
print_uint(pctx, port);
}
}
isc_boolean_t
cfg_obj_issockaddr(cfg_obj_t *obj) {
REQUIRE(obj != NULL);
return (ISC_TF(obj->type->rep == &cfg_rep_sockaddr));
}
isc_sockaddr_t *
cfg_obj_assockaddr(cfg_obj_t *obj) {
REQUIRE(obj != NULL && obj->type->rep == &cfg_rep_sockaddr);
return (&obj->value.sockaddr);
}
/* An IPv4/IPv6 address with optional port, "*" accepted as wildcard. */
static cfg_type_t cfg_type_sockaddr4wild = {
"sockaddr4wild", parse_sockaddr4wild, print_sockaddr,
&cfg_rep_sockaddr, NULL
};
static cfg_type_t cfg_type_sockaddr6wild = {
"v6addrportwild", parse_sockaddr6wild, print_sockaddr,
&cfg_rep_sockaddr, NULL
};
static cfg_type_t cfg_type_sockaddr = {
"sockaddr", parse_sockaddr, print_sockaddr,
&cfg_rep_sockaddr, NULL };
static cfg_type_t cfg_type_controls_sockaddr = {
"controls_sockaddr", parse_controls_sockaddr, print_sockaddr,
&cfg_rep_sockaddr, NULL };
/*
* Handle the special kludge syntax of the "keys" clause in the "server"
* statement, which takes a single key with our without braces and semicolon.
*/
static isc_result_t
parse_server_key_kludge(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret)
{
isc_result_t result;
isc_boolean_t braces = ISC_FALSE;
UNUSED(type);
/* Allow opening brace. */
CHECK(cfg_peektoken(pctx, 0));
if (pctx->token.type == isc_tokentype_special &&
pctx->token.value.as_char == '{') {
result = cfg_gettoken(pctx, 0);
braces = ISC_TRUE;
}
CHECK(parse(pctx, &cfg_type_astring, ret));
if (braces) {
/* Skip semicolon if present. */
CHECK(cfg_peektoken(pctx, 0));
if (pctx->token.type == isc_tokentype_special &&
pctx->token.value.as_char == ';')
CHECK(cfg_gettoken(pctx, 0));
CHECK(parse_special(pctx, '}'));
}
cleanup:
return (result);
}
static cfg_type_t cfg_type_server_key_kludge = {
"server_key", parse_server_key_kludge, NULL, NULL, NULL };
/*
* An optional logging facility.
*/
static isc_result_t
parse_optional_facility(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret)
{
isc_result_t result;
UNUSED(type);
CHECK(cfg_peektoken(pctx, QSTRING));
if (pctx->token.type == isc_tokentype_string ||
pctx->token.type == isc_tokentype_qstring) {
CHECK(parse(pctx, &cfg_type_astring, ret));
} else {
CHECK(parse(pctx, &cfg_type_void, ret));
}
cleanup:
return (result);
}
static cfg_type_t cfg_type_optional_facility = {
"optional_facility", parse_optional_facility, NULL, NULL, NULL };
/*
* A log severity. Return as a string, except "debug N",
* which is returned as a keyword object.
*/
static keyword_type_t debug_kw = { "debug", &cfg_type_uint32 };
static cfg_type_t cfg_type_debuglevel = {
"debuglevel", parse_keyvalue,
print_keyvalue, &cfg_rep_uint32, &debug_kw
};
static isc_result_t
parse_logseverity(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret) {
isc_result_t result;
UNUSED(type);
CHECK(cfg_peektoken(pctx, 0));
if (pctx->token.type == isc_tokentype_string &&
strcasecmp(pctx->token.value.as_pointer, "debug") == 0) {
CHECK(cfg_gettoken(pctx, 0)); /* read "debug" */
CHECK(cfg_peektoken(pctx, ISC_LEXOPT_NUMBER));
if (pctx->token.type == isc_tokentype_number) {
CHECK(parse_uint32(pctx, NULL, ret));
} else {
/*
* The debug level is optional and defaults to 1.
* This makes little sense, but we support it for
* compatibility with BIND 8.
*/
CHECK(create_cfgobj(pctx, &cfg_type_uint32, ret));
(*ret)->value.uint32 = 1;
}
(*ret)->type = &cfg_type_debuglevel; /* XXX kludge */
} else {
CHECK(parse(pctx, &cfg_type_loglevel, ret));
}
cleanup:
return (result);
}
static cfg_type_t cfg_type_logseverity = {
"logseverity", parse_logseverity, NULL, NULL, NULL };
/*
* The "file" clause of the "channel" statement.
* This is yet another special case.
*/
static const char *logversions_enums[] = { "unlimited", NULL };
static isc_result_t
parse_logversions(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret) {
return (parse_enum_or_other(pctx, type, &cfg_type_uint32, ret));
}
static cfg_type_t cfg_type_logversions = {
"logversions", parse_logversions, print_ustring,
&cfg_rep_string, logversions_enums
};
static cfg_tuplefielddef_t logfile_fields[] = {
{ "file", &cfg_type_qstring, 0 },
{ "versions", &cfg_type_logversions, 0 },
{ "size", &cfg_type_size, 0 },
{ NULL, NULL, 0 }
};
static isc_result_t
parse_logfile(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret) {
isc_result_t result;
cfg_obj_t *obj = NULL;
const cfg_tuplefielddef_t *fields = type->of;
CHECK(create_tuple(pctx, type, &obj));
/* Parse the mandatory "file" field */
CHECK(parse(pctx, fields[0].type, &obj->value.tuple[0]));
/* Parse "versions" and "size" fields in any order. */
for (;;) {
CHECK(cfg_peektoken(pctx, 0));
if (pctx->token.type == isc_tokentype_string) {
CHECK(cfg_gettoken(pctx, 0));
if (strcasecmp(pctx->token.value.as_pointer,
"versions") == 0 &&
obj->value.tuple[1] == NULL) {
CHECK(parse(pctx, fields[1].type,
&obj->value.tuple[1]));
} else if (strcasecmp(pctx->token.value.as_pointer,
"size") == 0 &&
obj->value.tuple[2] == NULL) {
CHECK(parse(pctx, fields[2].type,
&obj->value.tuple[2]));
} else {
break;
}
} else {
break;
}
}
/* Create void objects for missing optional values. */
if (obj->value.tuple[1] == NULL)
CHECK(parse_void(pctx, NULL, &obj->value.tuple[1]));
if (obj->value.tuple[2] == NULL)
CHECK(parse_void(pctx, NULL, &obj->value.tuple[2]));
*ret = obj;
return (ISC_R_SUCCESS);
cleanup:
CLEANUP_OBJ(obj);
return (result);
}
static void
print_logfile(cfg_printer_t *pctx, cfg_obj_t *obj) {
print_obj(pctx, obj->value.tuple[0]); /* file */
if (obj->value.tuple[1]->type->print != print_void) {
print(pctx, " versions ", 10);
print_obj(pctx, obj->value.tuple[1]);
}
if (obj->value.tuple[2]->type->print != print_void) {
print(pctx, " size ", 6);
print_obj(pctx, obj->value.tuple[2]);
}
}
static cfg_type_t cfg_type_logfile = {
"logfile", parse_logfile, print_logfile, &cfg_rep_tuple,
logfile_fields
};
/*
* lwres
*/
static cfg_tuplefielddef_t lwres_view_fields[] = {
{ "name", &cfg_type_astring, 0 },
{ "class", &cfg_type_optional_class, 0 },
{ NULL, NULL, 0 }
};
static cfg_type_t cfg_type_lwres_view = {
"lwres_view", parse_tuple, print_tuple, &cfg_rep_tuple,
lwres_view_fields
};
static cfg_type_t cfg_type_lwres_searchlist = {
"lwres_searchlist", parse_bracketed_list, print_bracketed_list,
&cfg_rep_list, &cfg_type_astring };
static cfg_clausedef_t
lwres_clauses[] = {
{ "listen-on", &cfg_type_portiplist, 0 },
{ "view", &cfg_type_lwres_view, 0 },
{ "search", &cfg_type_lwres_searchlist, 0 },
{ "ndots", &cfg_type_uint32, 0 },
{ NULL, NULL, 0 }
};
static cfg_clausedef_t *
lwres_clausesets[] = {
lwres_clauses,
NULL
};
static cfg_type_t cfg_type_lwres = {
"lwres", parse_map, print_map, &cfg_rep_map, lwres_clausesets };
/*
* rndc
*/
static cfg_clausedef_t
rndcconf_options_clauses[] = {
{ "default-server", &cfg_type_astring, 0 },
{ "default-key", &cfg_type_astring, 0 },
{ "default-port", &cfg_type_uint32, 0 },
{ NULL, NULL, 0 }
};
static cfg_clausedef_t *
rndcconf_options_clausesets[] = {
rndcconf_options_clauses,
NULL
};
static cfg_type_t cfg_type_rndcconf_options = {
"rndcconf_options", parse_map, print_map, &cfg_rep_map,
rndcconf_options_clausesets
};
static cfg_clausedef_t
rndcconf_server_clauses[] = {
{ "key", &cfg_type_astring, 0 },
{ "port", &cfg_type_uint32, 0 },
{ NULL, NULL, 0 }
};
static cfg_clausedef_t *
rndcconf_server_clausesets[] = {
rndcconf_server_clauses,
NULL
};
static cfg_type_t cfg_type_rndcconf_server = {
"rndcconf_server", parse_named_map, print_map, &cfg_rep_map,
rndcconf_server_clausesets
};
static cfg_clausedef_t
rndcconf_clauses[] = {
{ "key", &cfg_type_key, CFG_CLAUSEFLAG_MULTI },
{ "server", &cfg_type_rndcconf_server, CFG_CLAUSEFLAG_MULTI },
{ "options", &cfg_type_rndcconf_options, 0 },
{ NULL, NULL, 0 }
};
static cfg_clausedef_t *
rndcconf_clausesets[] = {
rndcconf_clauses,
NULL
};
LIBISCCFG_EXTERNAL_DATA cfg_type_t cfg_type_rndcconf = {
"rndcconf", parse_mapbody, print_mapbody, &cfg_rep_map,
rndcconf_clausesets
};
static isc_result_t
cfg_gettoken(cfg_parser_t *pctx, int options) {
isc_result_t result;
if (pctx->seen_eof)
return (ISC_R_SUCCESS);
options |= (ISC_LEXOPT_EOF | ISC_LEXOPT_NOMORE);
redo:
result = isc_lex_gettoken(pctx->lexer, options, &pctx->token);
pctx->ungotten = ISC_FALSE;
pctx->line = isc_lex_getsourceline(pctx->lexer);
switch (result) {
case ISC_R_SUCCESS:
if (pctx->token.type == isc_tokentype_eof) {
result = isc_lex_close(pctx->lexer);
INSIST(result == ISC_R_NOMORE ||
result == ISC_R_SUCCESS);
if (isc_lex_getsourcename(pctx->lexer) != NULL) {
/*
* Closed an included file, not the main file.
*/
cfg_listelt_t *elt;
elt = ISC_LIST_TAIL(pctx->open_files->
value.list);
INSIST(elt != NULL);
ISC_LIST_UNLINK(pctx->open_files->
value.list, elt, link);
ISC_LIST_APPEND(pctx->closed_files->
value.list, elt, link);
goto redo;
}
pctx->seen_eof = ISC_TRUE;
}
break;
case ISC_R_NOSPACE:
/* More understandable than "ran out of space". */
parser_error(pctx, LOG_NEAR, "token too big");
break;
default:
parser_error(pctx, LOG_NEAR, "%s",
isc_result_totext(result));
break;
}
return (result);
}
static void
cfg_ungettoken(cfg_parser_t *pctx) {
if (pctx->seen_eof)
return;
isc_lex_ungettoken(pctx->lexer, &pctx->token);
pctx->ungotten = ISC_TRUE;
}
static isc_result_t
cfg_peektoken(cfg_parser_t *pctx, int options) {
isc_result_t result;
CHECK(cfg_gettoken(pctx, options));
cfg_ungettoken(pctx);
cleanup:
return (result);
}
/*
* Get a string token, accepting both the quoted and the unquoted form.
* Log an error if the next token is not a string.
*/
static isc_result_t
cfg_getstringtoken(cfg_parser_t *pctx) {
isc_result_t result;
result = cfg_gettoken(pctx, QSTRING);
if (result != ISC_R_SUCCESS)
return (result);
if (pctx->token.type != isc_tokentype_string &&
pctx->token.type != isc_tokentype_qstring) {
parser_error(pctx, LOG_NEAR, "expected string");
return (ISC_R_UNEXPECTEDTOKEN);
}
return (ISC_R_SUCCESS);
}
static void
parser_error(cfg_parser_t *pctx, unsigned int flags, const char *fmt, ...)
{
va_list args;
va_start(args, fmt);
parser_complain(pctx, ISC_FALSE, flags, fmt, args);
va_end(args);
pctx->errors++;
}
static void
parser_warning(cfg_parser_t *pctx, unsigned int flags, const char *fmt, ...)
{
va_list args;
va_start(args, fmt);
parser_complain(pctx, ISC_TRUE, flags, fmt, args);
va_end(args);
pctx->warnings++;
}
#define MAX_LOG_TOKEN 30 /* How much of a token to quote in log messages. */
static char *
current_file(cfg_parser_t *pctx) {
static char none[] = "none";
cfg_listelt_t *elt;
cfg_obj_t *fileobj;
if (pctx->open_files == NULL)
return (none);
elt = ISC_LIST_TAIL(pctx->open_files->value.list);
if (elt == NULL)
return (none);
fileobj = elt->obj;
INSIST(fileobj->type == &cfg_type_qstring);
return (fileobj->value.string.base);
}
static void
parser_complain(cfg_parser_t *pctx, isc_boolean_t is_warning,
unsigned int flags, const char *format,
va_list args)
{
char tokenbuf[MAX_LOG_TOKEN + 10];
static char where[ISC_DIR_PATHMAX + 100];
static char message[2048];
int level = ISC_LOG_ERROR;
const char *prep = "";
if (is_warning)
level = ISC_LOG_WARNING;
sprintf(where, "%s:%u: ", current_file(pctx), pctx->line);
if ((unsigned int)vsprintf(message, format, args) >= sizeof message)
FATAL_ERROR(__FILE__, __LINE__,
"error message would overflow");
if ((flags & (LOG_NEAR|LOG_BEFORE|LOG_NOPREP)) != 0) {
isc_region_t r;
if (pctx->ungotten)
(void)cfg_gettoken(pctx, 0);
if (pctx->token.type == isc_tokentype_eof) {
snprintf(tokenbuf, sizeof(tokenbuf), "end of file");
} else {
isc_lex_getlasttokentext(pctx->lexer,
&pctx->token, &r);
if (r.length > MAX_LOG_TOKEN)
snprintf(tokenbuf, sizeof(tokenbuf),
"'%.*s...'", MAX_LOG_TOKEN, r.base);
else
snprintf(tokenbuf, sizeof(tokenbuf),
"'%.*s'", (int)r.length, r.base);
}
/* Choose a preposition. */
if (flags & LOG_NEAR)
prep = " near ";
else if (flags & LOG_BEFORE)
prep = " before ";
else
prep = " ";
} else {
tokenbuf[0] = '\0';
}
isc_log_write(pctx->lctx, CAT, MOD, level,
"%s%s%s%s", where, message, prep, tokenbuf);
}
void
cfg_obj_log(cfg_obj_t *obj, isc_log_t *lctx, int level, const char *fmt, ...) {
va_list ap;
char msgbuf[2048];
if (! isc_log_wouldlog(lctx, level))
return;
va_start(ap, fmt);
vsnprintf(msgbuf, sizeof(msgbuf), fmt, ap);
isc_log_write(lctx, CAT, MOD, level,
"%s:%u: %s",
obj->file == NULL ? "<unknown file>" : obj->file,
obj->line, msgbuf);
va_end(ap);
}
static isc_result_t
create_cfgobj(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret) {
cfg_obj_t *obj;
obj = isc_mem_get(pctx->mctx, sizeof(cfg_obj_t));
if (obj == NULL)
return (ISC_R_NOMEMORY);
obj->type = type;
obj->file = current_file(pctx);
obj->line = pctx->line;
*ret = obj;
return (ISC_R_SUCCESS);
}
static void
map_symtabitem_destroy(char *key, unsigned int type,
isc_symvalue_t symval, void *userarg)
{
cfg_obj_t *obj = symval.as_pointer;
cfg_parser_t *pctx = (cfg_parser_t *)userarg;
UNUSED(key);
UNUSED(type);
cfg_obj_destroy(pctx, &obj);
}
static isc_result_t
create_map(cfg_parser_t *pctx, const cfg_type_t *type, cfg_obj_t **ret) {
isc_result_t result;
isc_symtab_t *symtab = NULL;
cfg_obj_t *obj = NULL;
CHECK(create_cfgobj(pctx, type, &obj));
CHECK(isc_symtab_create(pctx->mctx, 5, /* XXX */
map_symtabitem_destroy,
pctx, ISC_FALSE, &symtab));
obj->value.map.symtab = symtab;
obj->value.map.id = NULL;
*ret = obj;
return (ISC_R_SUCCESS);
cleanup:
CLEANUP_OBJ(obj);
return (result);
}
static void
free_map(cfg_parser_t *pctx, cfg_obj_t *obj) {
CLEANUP_OBJ(obj->value.map.id);
isc_symtab_destroy(&obj->value.map.symtab);
}
isc_boolean_t
cfg_obj_istype(cfg_obj_t *obj, const cfg_type_t *type) {
return (ISC_TF(obj->type == type));
}
/*
* Destroy 'obj', a configuration object created in 'pctx'.
*/
void
cfg_obj_destroy(cfg_parser_t *pctx, cfg_obj_t **objp) {
cfg_obj_t *obj = *objp;
obj->type->rep->free(pctx, obj);
isc_mem_put(pctx->mctx, obj, sizeof(cfg_obj_t));
*objp = NULL;
}
static void
free_noop(cfg_parser_t *pctx, cfg_obj_t *obj) {
UNUSED(pctx);
UNUSED(obj);
}
/*
* Data and functions for printing grammar summaries.
*/
struct flagtext {
unsigned int flag;
const char *text;
} flagtexts[] = {
{ CFG_CLAUSEFLAG_NOTIMP, "not implemented" },
{ CFG_CLAUSEFLAG_OBSOLETE, "obsolete" },
{ CFG_CLAUSEFLAG_NEWDEFAULT, "default changed" },
{ 0, NULL }
};
static void
print_clause_flags(cfg_printer_t *pctx, unsigned int flags) {
struct flagtext *p;
isc_boolean_t first = ISC_TRUE;
for (p = flagtexts; p->flag != 0; p++) {
if ((flags & p->flag) != 0) {
if (first)
print(pctx, " // ", 4);
else
print(pctx, ", ", 2);
print(pctx, p->text, strlen(p->text));
first = ISC_FALSE;
}
}
}
static void
print_grammar(cfg_printer_t *pctx, const cfg_type_t *type) {
if (type->print == print_mapbody) {
const cfg_clausedef_t * const *clauseset;
const cfg_clausedef_t *clause;
for (clauseset = type->of; *clauseset != NULL; clauseset++) {
for (clause = *clauseset;
clause->name != NULL;
clause++) {
print(pctx, clause->name, strlen(clause->name));
print(pctx, " ", 1);
print_grammar(pctx, clause->type);
print(pctx, ";", 1);
/* XXX print flags here? */
print(pctx, "\n\n", 2);
}
}
} else if (type->print == print_map) {
const cfg_clausedef_t * const *clauseset;
const cfg_clausedef_t *clause;
print_open(pctx);
for (clauseset = type->of; *clauseset != NULL; clauseset++) {
for (clause = *clauseset;
clause->name != NULL;
clause++) {
print_indent(pctx);
print(pctx, clause->name, strlen(clause->name));
if (clause->type->print != print_void)
print(pctx, " ", 1);
print_grammar(pctx, clause->type);
print(pctx, ";", 1);
print_clause_flags(pctx, clause->flags);
print(pctx, "\n", 1);
}
}
print_close(pctx);
} else if (type->print == print_tuple) {
const cfg_tuplefielddef_t *fields = type->of;
const cfg_tuplefielddef_t *f;
isc_boolean_t need_space = ISC_FALSE;
for (f = fields; f->name != NULL; f++) {
if (need_space)
print(pctx, " ", 1);
print_grammar(pctx, f->type);
need_space = ISC_TF(f->type->print != print_void);
}
} else if (type->parse == parse_enum) {
const char * const *p;
print(pctx, "( ", 2);
for (p = type->of; *p != NULL; p++) {
print(pctx, *p, strlen(*p));
if (p[1] != NULL)
print(pctx, " | ", 3);
}
print(pctx, " )", 2);
} else if (type->print == print_bracketed_list) {
print(pctx, "{ ", 2);
print_grammar(pctx, type->of);
print(pctx, "; ... }", 7);
} else if (type->parse == parse_keyvalue) {
const keyword_type_t *kw = type->of;
print(pctx, kw->name, strlen(kw->name));
print(pctx, " ", 1);
print_grammar(pctx, kw->type);
} else if (type->parse == parse_optional_keyvalue) {
const keyword_type_t *kw = type->of;
print(pctx, "[ ", 2);
print(pctx, kw->name, strlen(kw->name));
print(pctx, " ", 1);
print_grammar(pctx, kw->type);
print(pctx, " ]", 2);
} else if (type->print == print_void) {
/* Print nothing. */
} else {
print(pctx, "<", 1);
print(pctx, type->name, strlen(type->name));
print(pctx, ">", 1);
}
}
void
cfg_print_grammar(const cfg_type_t *type,
void (*f)(void *closure, const char *text, int textlen),
void *closure)
{
cfg_printer_t pctx;
pctx.f = f;
pctx.closure = closure;
pctx.indent = 0;
print_grammar(&pctx, type);
}