dns_cache.h File Reference

#include "str.h"
#include "config.h"
#include "timer.h"
#include "ip_addr.h"
#include "atomic_ops.h"
#include "resolve.h"

Go to the source code of this file.

Data Structures
struct	dns_rr
struct	dns_lu_lst
struct	dns_hash_entry
struct	dns_srv_handle
Defines
#define	DEFAULT_DNS_NEG_CACHE_TTL   60
#define	DEFAULT_DNS_CACHE_MIN_TTL   0
#define	DEFAULT_DNS_CACHE_MAX_TTL   ((unsigned int)(-1))
#define	DEFAULT_DNS_MAX_MEM   500
#define	DNS_SRV_LB
#define	DNS_LU_LST
#define	DNS_BAD_NAME   1
#define	DNS_NO_FLAGS   0
#define	DNS_IPV4_ONLY   1
#define	DNS_IPV6_ONLY   2
#define	DNS_IPV6_FIRST   4
#define	DNS_SRV_RR_LB   8
#define	DNS_TRY_NAPTR   16
#define	IP_ERR_BAD_DST   2
#define	IP_ERR_SND   3
#define	IP_ERR_TIMEOUT   4
#define	IP_ERR_TCP_CON   5
Typedefs
typedef unsigned short	srv_flags_t
Enumerations
enum	dns_errors {   E_DNS_OK = 0, E_DNS_EOR, E_DNS_UNKNOWN, E_DNS_INTERNAL_ERR,   E_DNS_BAD_SRV_ENTRY, E_DNS_NO_SRV, E_DNS_BAD_IP_ENTRY, E_DNS_NO_IP,   E_DNS_BAD_IP, E_DNS_BLACKLIST_IP, E_DNS_NAME_TOO_LONG, E_DNS_AF_MISMATCH,   E_DNS_NO_NAPTR, E_DNS_CRITICAL }
Functions
const char *	dns_strerror (int err)
void	fix_dns_flags (str *gname, str *name)
int	use_dns_failover_fixup (void *handle, str *gname, str *name, void **val)
int	use_dns_cache_fixup (void *handle, str *gname, str *name, void **val)
int	dns_cache_max_mem_fixup (void *handle, str *gname, str *name, void **val)
int	init_dns_cache ()
void	destroy_dns_cache ()
void	dns_hash_put (struct dns_hash_entry *e)
void	dns_hash_put_shm_unsafe (struct dns_hash_entry *e)
void	dns_srv_handle_put (struct dns_srv_handle *h)
void	dns_srv_handle_ref (struct dns_srv_handle *h)
void	dns_srv_handle_cpy (struct dns_srv_handle *dst, struct dns_srv_handle *src)
void	dns_srv_handle_put_shm_unsafe (struct dns_srv_handle *h)
int	dns_srv_handle_next (struct dns_srv_handle *h, int err)
void	dns_srv_handle_init (struct dns_srv_handle *h)
int	dns_srv_get_ip (str *name, struct ip_addr *ip, unsigned short *port, int flags)
int	dns_get_ip (str *name, struct ip_addr *ip, int flags)
hostent *	dns_srv_get_he (str *name, unsigned short *port, int flags)
hostent *	dns_get_he (str *name, int flags)
int	dns_sip_resolve (struct dns_srv_handle *h, str *name, struct ip_addr *ip, unsigned short *port, char *proto, int flags)
int	dns_sip_resolve2su (struct dns_srv_handle *h, union sockaddr_union *su, str *name, unsigned short port, char *proto, int flags)
void	dns_cache_flush (void)

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Define Documentation

#define DEFAULT_DNS_CACHE_MAX_TTL   ((unsigned int)(-1))

Definition at line 58 of file dns_cache.h.

#define DEFAULT_DNS_CACHE_MIN_TTL   0

Definition at line 57 of file dns_cache.h.

#define DEFAULT_DNS_MAX_MEM   500

Definition at line 59 of file dns_cache.h.

#define DEFAULT_DNS_NEG_CACHE_TTL   60

Definition at line 56 of file dns_cache.h.

#define DNS_BAD_NAME   1

Definition at line 99 of file dns_cache.h.

#define DNS_IPV4_ONLY   1

Definition at line 103 of file dns_cache.h.

#define DNS_IPV6_FIRST   4

Definition at line 105 of file dns_cache.h.

#define DNS_IPV6_ONLY   2

Definition at line 104 of file dns_cache.h.

#define DNS_LU_LST

Definition at line 64 of file dns_cache.h.

#define DNS_NO_FLAGS   0

Definition at line 102 of file dns_cache.h.

#define DNS_SRV_LB

Definition at line 62 of file dns_cache.h.

#define DNS_SRV_RR_LB   8

Definition at line 106 of file dns_cache.h.

#define DNS_TRY_NAPTR   16

Definition at line 107 of file dns_cache.h.

#define IP_ERR_BAD_DST   2

Definition at line 111 of file dns_cache.h.

#define IP_ERR_SND   3

Definition at line 112 of file dns_cache.h.

#define IP_ERR_TCP_CON   5

Definition at line 114 of file dns_cache.h.

#define IP_ERR_TIMEOUT   4

Definition at line 113 of file dns_cache.h.

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Typedef Documentation

typedef unsigned short srv_flags_t

Definition at line 158 of file dns_cache.h.

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Enumeration Type Documentation

enum dns_errors

Enumeration values: E_DNS_OK  E_DNS_EOR  E_DNS_UNKNOWN  E_DNS_INTERNAL_ERR  E_DNS_BAD_SRV_ENTRY  E_DNS_NO_SRV  E_DNS_BAD_IP_ENTRY  E_DNS_NO_IP  E_DNS_BAD_IP  E_DNS_BLACKLIST_IP  E_DNS_NAME_TOO_LONG  E_DNS_AF_MISMATCH  E_DNS_NO_NAPTR  E_DNS_CRITICAL  Definition at line 70 of file dns_cache.h.

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Function Documentation

void destroy_dns_cache (   )

Referenced by cleanup().

void dns_cache_flush (  void   )

int dns_cache_max_mem_fixup (  void *  handle, str *  gname, str *  name, void **  val )

struct hostent* dns_get_he (  str *  name, int  flags )

int dns_get_ip (  str *  name, struct ip_addr *  ip, int  flags )

void dns_hash_put (  struct dns_hash_entry *  e  )

Referenced by dns_srv_handle_put().

void dns_hash_put_shm_unsafe (  struct dns_hash_entry *  e  )

Referenced by dns_srv_handle_put_shm_unsafe().

int dns_sip_resolve (  struct dns_srv_handle *  h, str *  name, struct ip_addr *  ip, unsigned short *  port, char *  proto, int  flags )

Referenced by dns_sip_resolve2su().

int dns_sip_resolve2su (  struct dns_srv_handle *  h, union sockaddr_union *  su, str *  name, unsigned short  port, char *  proto, int  flags )  [inline, static]

Definition at line 316 of file dns_cache.h. References dns_sip_resolve(), flags, init_su(), and str. Referenced by forward_request(), and uri2dst().

struct hostent* dns_srv_get_he (  str *  name, unsigned short *  port, int  flags )

int dns_srv_get_ip (  str *  name, struct ip_addr *  ip, unsigned short *  port, int  flags )

void dns_srv_handle_cpy (  struct dns_srv_handle *  dst, struct dns_srv_handle *  src )  [inline, static]

Definition at line 227 of file dns_cache.h. References dns_srv_handle_ref().

void dns_srv_handle_init (  struct dns_srv_handle *  h  )  [inline, static]

Definition at line 268 of file dns_cache.h. References dns_srv_handle::a, dns_srv_handle::ip_no, dns_srv_handle::port, dns_srv_handle::proto, dns_srv_handle::srv, dns_srv_handle::srv_no, and dns_srv_handle::srv_tried_rrs. Referenced by build_dlg_ack(), forward_request(), init_branches(), and t_uac_prepare().

int dns_srv_handle_next (  struct dns_srv_handle *  h, int  err )  [inline, static]

Definition at line 259 of file dns_cache.h. References dns_srv_handle::a, dns_srv_handle::ip_no, and dns_srv_handle::srv. Referenced by forward_request(), and uri2dst().

void dns_srv_handle_put (  struct dns_srv_handle *  h  )  [inline, static]

Definition at line 196 of file dns_cache.h. References dns_srv_handle::a, dns_hash_put(), and dns_srv_handle::srv. Referenced by build_dlg_ack(), forward_request(), and t_uac_prepare().

void dns_srv_handle_put_shm_unsafe (  struct dns_srv_handle *  h  )  [inline, static]

Definition at line 237 of file dns_cache.h. References dns_srv_handle::a, dns_hash_put_shm_unsafe(), and dns_srv_handle::srv. Referenced by free_cell().

void dns_srv_handle_ref (  struct dns_srv_handle *  h  )  [inline, static]

Definition at line 213 of file dns_cache.h. References dns_srv_handle::a, atomic_inc, dns_hash_entry::refcnt, and dns_srv_handle::srv. Referenced by dns_srv_handle_cpy().

const char * dns_strerror (  int  err  )

Referenced by forward_request(), and uri2dst().

void fix_dns_flags (  str *  gname, str *  name )

int init_dns_cache (   )

Referenced by main().

int use_dns_cache_fixup (  void *  handle, str *  gname, str *  name, void **  val )

int use_dns_failover_fixup (  void *  handle, str *  gname, str *  name, void **  val )

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