mirror of
git://git.acid.vegas/unrealircd.git
synced 2024-12-26 16:26:38 +00:00
73 lines
1.9 KiB
C
73 lines
1.9 KiB
C
/* OMG... OMG! WHAT AN INCLUDE HORROR !!! */
|
|
#include <ares.h>
|
|
#include <ares_version.h>
|
|
|
|
typedef enum {
|
|
DNSREQ_CLIENT = 1,
|
|
DNSREQ_LINKCONF = 2,
|
|
DNSREQ_CONNECT = 3
|
|
} DNSReqType;
|
|
|
|
typedef struct DNSReq DNSReq;
|
|
|
|
/* Depending on the request type, some fields are filled in:
|
|
* cptr: DNSREQ_CLIENT, DNSREQ_CONNECT
|
|
* link: DNSREQ_LINKCONF, DNSREQ_CONNECT
|
|
*/
|
|
|
|
struct DNSReq {
|
|
DNSReq *prev, *next;
|
|
char *name; /**< Name being resolved (only for DNSREQ_LINKCONF and DNSREQ_CONNECT) */
|
|
char ipv6; /**< Resolving for ipv6 or ipv4? */
|
|
DNSReqType type; /**< DNS Request type (DNSREQ_*) */
|
|
Client *client; /**< Client the request is for, NULL if client died OR unavailable */
|
|
ConfigItem_link *linkblock; /**< Linkblock */
|
|
};
|
|
|
|
typedef struct DNSCache DNSCache;
|
|
|
|
struct DNSCache {
|
|
DNSCache *prev, *next; /**< Previous and next in linked list */
|
|
DNSCache *hprev, *hnext; /**< Previous and next in hash list */
|
|
char *name; /**< The hostname */
|
|
char *ip; /**< The IP address */
|
|
time_t expires; /**< When record expires */
|
|
};
|
|
|
|
typedef struct DNSStats DNSStats;
|
|
|
|
struct DNSStats {
|
|
unsigned int cache_hits;
|
|
unsigned int cache_misses;
|
|
unsigned int cache_adds;
|
|
};
|
|
|
|
/** Time to keep cache records. */
|
|
#define DNSCACHE_TTL 600
|
|
|
|
/** Size of the hash table (prime!).
|
|
* Consumes <this>*4 on ia32 and <this>*4 on 64 bit
|
|
* 241 seems a good bet.. which ~1k on ia32 and ~2k on ia64.
|
|
*/
|
|
#define DNS_HASH_SIZE 241
|
|
|
|
/** Max # of entries we want in our cache.
|
|
* This:
|
|
* a) prevents us from using too much memory, and
|
|
* b) prevents us from keeping useless cache records
|
|
*
|
|
* A dnscache item is roughly ~80 bytes in size (slightly more on x86),
|
|
* so 241*80=~20k, which seems reasonable ;).
|
|
*/
|
|
#define DNS_MAX_ENTRIES DNS_HASH_SIZE
|
|
|
|
|
|
extern ares_channel resolver_channel;
|
|
|
|
extern void init_resolver(int);
|
|
|
|
struct hostent *unrealdns_doclient(Client *cptr);
|
|
|
|
extern void unreal_gethostbyname(const char *name, int family, ares_host_callback callback, void *arg);
|
|
|