/************************************************************************************************** $Id: named.h,v 1.65 2005/04/20 16:49:12 bboy Exp $ Copyright (C) 2002-2005 Don Moore This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at Your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA **************************************************************************************************/ #ifndef _MYDNS_NAMED_H #define _MYDNS_NAMED_H #include "mydnsutil.h" #include "header.h" #include "mydns.h" #include "task.h" #include "cache.h" #if HAVE_SYS_RESOURCE_H # include #endif #if HAVE_SYS_WAIT_H # include #endif #if HAVE_NETDB_H # include #endif /* The alarm function runs every ALARM_INTERVAL seconds */ #define ALARM_INTERVAL 15 #define DNS_MAXPACKETLEN DNS_MAXPACKETLEN_UDP #if ALIAS_ENABLED # define MAX_ALIAS_LEVEL 6 #endif /* Maximum CNAME recursion depth */ #define DNS_MAX_CNAME_RECURSION 25 /* Size of reply header data; that's id + DNS_HEADER + qdcount + ancount + nscount + arcount */ #define DNS_HEADERSIZE (SIZE16 * 6) #define SQLESC(s,d) { \ char *rv = alloca(strlen((s))*2+1); \ if (!rv) Err("alloca"); \ sql_escstr(sql, rv, s, strlen((s))); \ d = rv; \ } /* This is the header offset at the start of most reply functions. The extra SIZE16 at the end is the RDLENGTH field in the RR's header. */ #define CUROFFSET(t) (DNS_HEADERSIZE + (t)->qdlen + (t)->rdlen + SIZE16) #if DEBUG_ENABLED extern char *datasection_str[]; /* Strings describing data section types */ #endif /* Queue structure for TASK records (really not a queue, but a list) */ typedef struct _named_queue { size_t size; /* Number of elements in queue */ TASK *head; /* Pointer to first element in list */ TASK *tail; /* Pointer to last element in list */ } QUEUE; #define MAX_RESULTS 20 typedef struct _serverstatus /* Server status information */ { time_t start_time; /* Time server started */ uint32_t udp_requests, tcp_requests; /* Total # of requests handled */ uint32_t timedout; /* Number of requests that timed out */ uint32_t results[MAX_RESULTS]; /* Result codes */ } SERVERSTATUS; extern SERVERSTATUS Status; /* Global variables */ extern CONF *Conf; /* Config file data */ extern QUEUE *Tasks; /* Task queue */ extern CACHE *Cache; /* Zone cache */ extern time_t current_time; /* Current time */ extern time_t task_timeout; /* Task timeout */ extern int axfr_enabled; /* Allow AXFR? */ extern int tcp_enabled; /* Enable TCP? */ extern int dns_update_enabled; /* Enable DNS UPDATE? */ extern int ignore_minimum; /* Ignore minimum TTL? */ extern char hostname[256]; /* This machine's hostname */ extern uint32_t answer_then_quit; /* Answer this many queries then quit */ extern int show_data_errors; /* Output data errors? */ extern int forward_recursive; /* Forward recursive queries? */ extern char *recursive_fwd_server; /* Name of server for recursive forwarding */ extern int recursive_family; /* Protocol family for recursion */ #if HAVE_IPV6 extern struct sockaddr_in6 recursive_sa6; /* Recursive server (IPv6) */ #endif extern struct sockaddr_in recursive_sa; /* Recursive server (IPv4) */ #if ALIAS_ENABLED /* alias.c */ extern MYDNS_RR *find_alias(TASK *, char *); extern int alias_recurse(TASK *t, datasection_t section, char *fqdn, MYDNS_SOA *soa, char *label, MYDNS_RR *alias); #endif /* axfr.c */ extern void axfr(TASK *); /* conf.c */ extern void load_config(void); extern void dump_config(void); extern void conf_set_logging(void); extern void check_config_file_perms(void); /* data.c */ extern MYDNS_SOA *find_soa(TASK *, char *, char *); extern MYDNS_RR *find_rr(TASK *, MYDNS_SOA *, dns_qtype_t, char *); extern void iplong_to_ipchs(char*, int, int); extern int get_telecom_operator(int*,int); /* db.c */ extern void db_connect(void); extern void db_output_create_tables(void); extern void db_verify_tables(void); /* encode.c */ extern int name_remember(TASK *, char *, unsigned int); extern void name_forget(TASK *); extern unsigned int name_find(TASK *, char *); extern char *name_unencode(char *, size_t, char *, char *, size_t); extern int name_encode(TASK *, char *, char *, unsigned int, int); /* error.c */ extern int _formerr_internal(TASK *, dns_rcode_t, task_error_t, char *, const char *, unsigned int); extern int _dnserror_internal(TASK *, dns_rcode_t, task_error_t, const char *, unsigned int); extern char *err_reason_str(TASK *, task_error_t); extern int rr_error_repeat(uint32_t); extern int rr_error(uint32_t, const char *, ...) __printflike(2,3); #define formerr(task,rcode,reason,xtra) _formerr_internal((task),(rcode),(reason),(xtra),__FILE__,__LINE__) #define dnserror(task,rcode,reason) _dnserror_internal((task),(rcode),(reason),__FILE__,__LINE__) /* queue.c */ extern QUEUE *queue_init(void); extern int _enqueue(QUEUE *, TASK *, const char *, unsigned int); extern void _dequeue(QUEUE *, TASK *, const char *, unsigned int); #define enqueue(Q,T) _enqueue((Q), (T), __FILE__, __LINE__) #define dequeue(Q,T) _dequeue((Q), (T), __FILE__, __LINE__) /* recursive.c */ extern int recursive_fwd(TASK *); extern int recursive_fwd_connect(TASK *); extern int recursive_fwd_write(TASK *); extern int recursive_fwd_read(TASK *); /* reply.c */ extern int reply_init(TASK *); extern void build_cache_reply(TASK *); extern void build_reply(TASK *, int); /* resolve.c */ extern int resolve(TASK *, datasection_t, dns_qtype_t, char *, int); /* rr.c */ extern void rrlist_add(TASK *, datasection_t, dns_rrtype_t, void *, char *); extern void rrlist_free(RRLIST *); /* sort.c */ extern void sort_a_recs(TASK *, RRLIST *, datasection_t); extern void sort_mx_recs(TASK *, RRLIST *, datasection_t); extern void sort_srv_recs(TASK *, RRLIST *, datasection_t); /* task.c */ extern int new_task(TASK *, unsigned char *, size_t); extern void task_init_header(TASK *); extern char *clientaddr(TASK *); extern char *desctask(TASK *); extern TASK *_task_init(taskstat_t, int, int, int, void *, const char *, int); #define task_init(S,fd,p,f,a) _task_init((S), (fd), (p), (f), (a), __FILE__, __LINE__) extern void _task_free(TASK *, const char *, int); #define task_free(T) if ((T)) _task_free((T), __FILE__, __LINE__), (T) = NULL extern void task_build_reply(TASK *); extern void task_output_info(TASK *, char *); extern void task_process(register TASK *); /* tcp.c */ extern int accept_tcp_query(int, int); extern int read_tcp_query(TASK *); extern int write_tcp_reply(TASK *); /* udp.c */ extern int read_udp_query(int, int); extern void write_udp_reply(TASK *); /* update.c */ extern int dns_update(TASK *); #endif /* _MYDNS_NAMED_H */ /* vi:set ts=3: */
