#include <config.h>
#include <stdlib.h>
#include <string.h>
#include <isc/list.h>
#include <isc/magic.h>
#include <isc/mem.h>
#include <isc/once.h>
#include <isc/print.h>
#include <isc/socket.h>
#include <isc/task.h>
#include <isc/util.h>
#include <isccfg/namedconf.h>
#include <dns/log.h>
#include <dns/result.h>
#include <dns/view.h>
#include <named/globals.h>
#include <named/log.h>
#include <named/lwaddr.h>
#include <named/lwresd.h>
#include <named/lwdclient.h>
#include <named/lwsearch.h>
#include <named/server.h>
Go to the source code of this file.
Defines | |
| #define | LWRESD_MAGIC ISC_MAGIC('L', 'W', 'R', 'D') |
| #define | VALID_LWRESD(l) ISC_MAGIC_VALID(l, LWRESD_MAGIC) |
| #define | LWRESLISTENER_MAGIC ISC_MAGIC('L', 'W', 'R', 'L') |
| #define | VALID_LWRESLISTENER(l) ISC_MAGIC_VALID(l, LWRESLISTENER_MAGIC) |
| #define | LWRESD_NCLIENTS_MAX 32768 |
| max clients per task | |
| #define | CHECK(op) |
Functions | |
| typedef | ISC_LIST (ns_lwreslistener_t) |
| void * | ns__lwresd_memalloc (void *arg, size_t size) |
| Wrappers around our memory management stuff, for the lwres functions. | |
| void | ns__lwresd_memfree (void *arg, void *mem, size_t size) |
| static isc_result_t | buffer_putstr (isc_buffer_t *b, const char *s) |
| isc_result_t | ns_lwresd_parseeresolvconf (isc_mem_t *mctx, cfg_parser_t *pctx, cfg_obj_t **configp) |
| isc_result_t | ns_lwdmanager_create (isc_mem_t *mctx, const cfg_obj_t *lwres, ns_lwresd_t **lwresdp) |
| create manager | |
| void | ns_lwdmanager_attach (ns_lwresd_t *source, ns_lwresd_t **targetp) |
| attach to manager | |
| void | ns_lwdmanager_detach (ns_lwresd_t **lwresdp) |
| detach from manager | |
| void | ns_lwreslistener_attach (ns_lwreslistener_t *source, ns_lwreslistener_t **targetp) |
| attach to listener | |
| void | ns_lwreslistener_detach (ns_lwreslistener_t **listenerp) |
| detach from lister | |
| static isc_result_t | listener_create (isc_mem_t *mctx, ns_lwresd_t *lwresd, ns_lwreslistener_t **listenerp) |
| static isc_result_t | listener_bind (ns_lwreslistener_t *listener, isc_sockaddr_t *address) |
| static void | listener_copysock (ns_lwreslistener_t *oldlistener, ns_lwreslistener_t *newlistener) |
| static isc_result_t | listener_startclients (ns_lwreslistener_t *listener) |
| static void | listener_shutdown (ns_lwreslistener_t *listener) |
| static isc_result_t | find_listener (isc_sockaddr_t *address, ns_lwreslistener_t **listenerp) |
| void | ns_lwreslistener_unlinkcm (ns_lwreslistener_t *listener, ns_lwdclientmgr_t *cm) |
| link client manager | |
| void | ns_lwreslistener_linkcm (ns_lwreslistener_t *listener, ns_lwdclientmgr_t *cm) |
| unlink client manager | |
| static isc_result_t | configure_listener (isc_sockaddr_t *address, ns_lwresd_t *lwresd, isc_mem_t *mctx, ns_lwreslistenerlist_t *newlisteners) |
| isc_result_t | ns_lwresd_configure (isc_mem_t *mctx, const cfg_obj_t *config) |
| Configure lwresd. | |
| void | ns_lwresd_shutdown (void) |
| Trigger shutdown. | |
To paraphrase the old saying about X11, "It's not a lightweight deamon for resolvers, it's a deamon for lightweight resolvers".
Definition in file lwresd.c.
| #define LWRESD_MAGIC ISC_MAGIC('L', 'W', 'R', 'D') |
| #define VALID_LWRESD | ( | l | ) | ISC_MAGIC_VALID(l, LWRESD_MAGIC) |
Definition at line 58 of file lwresd.c.
Referenced by ns_lwdmanager_attach(), and ns_lwdmanager_detach().
| #define LWRESLISTENER_MAGIC ISC_MAGIC('L', 'W', 'R', 'L') |
| #define VALID_LWRESLISTENER | ( | l | ) | ISC_MAGIC_VALID(l, LWRESLISTENER_MAGIC) |
Definition at line 61 of file lwresd.c.
Referenced by ns_lwreslistener_attach(), ns_lwreslistener_detach(), ns_lwreslistener_linkcm(), and ns_lwreslistener_unlinkcm().
| #define LWRESD_NCLIENTS_MAX 32768 |
| #define CHECK | ( | op | ) |
Value:
do { result = (op); \ if (result != ISC_R_SUCCESS) goto cleanup; \ } while (0)
| typedef ISC_LIST | ( | ns_lwreslistener_t | ) |
Definition at line 65 of file lwresd.c.
References isc_mutex_init, ISC_R_SUCCESS, and RUNTIME_CHECK.
| void* ns__lwresd_memalloc | ( | void * | arg, | |
| size_t | size | |||
| ) |
Wrappers around our memory management stuff, for the lwres functions.
Definition at line 82 of file lwresd.c.
References isc_mem_get.
Referenced by ns_lwdclientmgr_create(), and ns_lwresd_parseeresolvconf().
| void ns__lwresd_memfree | ( | void * | arg, | |
| void * | mem, | |||
| size_t | size | |||
| ) |
Definition at line 87 of file lwresd.c.
References isc_mem_put.
Referenced by ns_lwdclientmgr_create(), and ns_lwresd_parseeresolvconf().
| static isc_result_t buffer_putstr | ( | isc_buffer_t * | b, | |
| const char * | s | |||
| ) | [static] |
Definition at line 98 of file lwresd.c.
References isc_buffer_availablelength, isc_buffer_putmem, ISC_R_NOSPACE, and ISC_R_SUCCESS.
Referenced by ns_lwresd_parseeresolvconf().
| isc_result_t ns_lwresd_parseeresolvconf | ( | isc_mem_t * | mctx, | |
| cfg_parser_t * | pctx, | |||
| cfg_obj_t ** | configp | |||
| ) |
Definition at line 110 of file lwresd.c.
References buffer_putstr(), cfg_parse_buffer(), cfg_type_namedconf, CHECK, cleanup(), DNS_R_SYNTAX, INSIST, isc_buffer_base, isc_buffer_init, isc_buffer_usedlength, ISC_LOG_ERROR, isc_log_write(), isc_netaddr_format(), ISC_NETADDR_FORMATSIZE, isc_netaddr_fromsockaddr(), isc_netaddr_masktoprefixlen(), isc_netaddr_totext(), ISC_R_NOMEMORY, ISC_R_SUCCESS, lwaddr_sockaddr_fromlwresaddr(), lwctx, ns__lwresd_memalloc(), ns__lwresd_memfree(), NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_LWRESD, str, and text.
Referenced by load_configuration().
| isc_result_t ns_lwdmanager_create | ( | isc_mem_t * | mctx, | |
| const cfg_obj_t * | lwres, | |||
| ns_lwresd_t ** | lwresdp | |||
| ) |
create manager
Definition at line 285 of file lwresd.c.
References cfg_list_first(), cfg_list_next(), cfg_listelt_value(), cfg_map_get(), cfg_obj_asstring(), cfg_obj_asuint32(), cfg_tuple_get(), dns_fixedname_init, dns_fixedname_name, dns_name_fromtext(), dns_rootname, dns_view_detach(), dns_viewlist_find(), INSIST, isc_buffer_add, isc_buffer_constinit, ISC_FALSE, ISC_LOG_WARNING, isc_log_write(), isc_mem_attach(), isc_mem_detach(), isc_mem_get, isc_mem_put, isc_mutex_init, ISC_R_NOMEMORY, ISC_R_SUCCESS, ns_lwresd::lock, LWRESD_MAGIC, LWRESD_NCLIENTS_MAX, ns_lwresd::magic, ns_lwresd::mctx, name, namebuf, ns_lwresd::nclients, ns_lwresd::ndots, ns_config_getclass(), NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_LWRESD, ns_lwsearchlist_append(), ns_lwsearchlist_create(), ns_lwsearchlist_detach(), ns_lwresd::ntasks, ns_lwresd::refs, RUNTIME_CHECK, search(), ns_lwresd::search, ns_lwresd::shutting_down, and ns_lwresd::view.
Referenced by ns_lwresd_configure().
| void ns_lwdmanager_attach | ( | ns_lwresd_t * | source, | |
| ns_lwresd_t ** | targetp | |||
| ) |
attach to manager
Definition at line 429 of file lwresd.c.
References INSIST, ns_lwresd::lock, LOCK, ns_lwresd::refs, UNLOCK, and VALID_LWRESD.
Referenced by listener_create().
| void ns_lwdmanager_detach | ( | ns_lwresd_t ** | lwresdp | ) |
detach from manager
Definition at line 441 of file lwresd.c.
References dns_view_detach(), INSIST, ISC_FALSE, isc_mem_detach(), isc_mem_put, ISC_TRUE, ns_lwresd::lock, LOCK, ns_lwresd::magic, ns_lwresd::mctx, mctx, ns_lwsearchlist_detach(), ns_lwresd::refs, ns_lwresd::search, UNLOCK, VALID_LWRESD, and ns_lwresd::view.
Referenced by ns_lwresd_configure(), and ns_lwreslistener_detach().
| void ns_lwreslistener_attach | ( | ns_lwreslistener_t * | source, | |
| ns_lwreslistener_t ** | targetp | |||
| ) |
attach to listener
Definition at line 476 of file lwresd.c.
References INSIST, ns_lwreslistener::lock, LOCK, ns_lwreslistener::refs, UNLOCK, and VALID_LWRESLISTENER.
Referenced by ns_lwdclientmgr_create().
| void ns_lwreslistener_detach | ( | ns_lwreslistener_t ** | listenerp | ) |
detach from lister
Definition at line 490 of file lwresd.c.
References INSIST, ISC_FALSE, isc_mem_detach(), isc_mem_put, isc_socket_detach(), ISC_TRUE, ns_lwreslistener::lock, LOCK, ns_lwreslistener::magic, ns_lwreslistener::manager, ns_lwreslistener::mctx, mctx, ns_lwdmanager_detach(), ns_lwreslistener::refs, ns_lwreslistener::sock, UNLOCK, and VALID_LWRESLISTENER.
Referenced by configure_listener(), lwdclientmgr_destroy(), ns_lwresd_configure(), and ns_lwresd_shutdown().
| static isc_result_t listener_create | ( | isc_mem_t * | mctx, | |
| ns_lwresd_t * | lwresd, | |||
| ns_lwreslistener_t ** | listenerp | |||
| ) | [static] |
Definition at line 524 of file lwresd.c.
References ISC_LINK_INIT, ISC_LIST_INIT, isc_mem_attach(), isc_mem_get, isc_mem_put, isc_mutex_init, ISC_R_NOMEMORY, ISC_R_SUCCESS, ns_lwreslistener::lock, LWRESLISTENER_MAGIC, ns_lwreslistener::magic, ns_lwreslistener::manager, ns_lwreslistener::mctx, ns_lwdmanager_attach(), ns_lwreslistener::refs, REQUIRE, and ns_lwreslistener::sock.
Referenced by configure_listener().
| static isc_result_t listener_bind | ( | ns_lwreslistener_t * | listener, | |
| isc_sockaddr_t * | address | |||
| ) | [static] |
Definition at line 561 of file lwresd.c.
References ns_lwreslistener::address, AF_INET6, ISC_LOG_WARNING, isc_log_write(), isc_net_probeipv4(), isc_net_probeipv6(), ISC_R_FAMILYNOSUPPORT, ISC_R_SUCCESS, isc_result_totext(), isc_sockaddr_format(), ISC_SOCKADDR_FORMATSIZE, isc_sockaddr_getport(), isc_sockaddr_pf(), isc_sockaddr_setport(), isc_socket_bind(), isc_socket_create(), isc_socket_detach(), ISC_SOCKET_REUSEADDRESS, isc_sockettype_udp, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_LWRESD, port, ns_lwreslistener::sock, and sock.
Referenced by configure_listener().
| static void listener_copysock | ( | ns_lwreslistener_t * | oldlistener, | |
| ns_lwreslistener_t * | newlistener | |||
| ) | [static] |
Definition at line 610 of file lwresd.c.
References ns_lwreslistener::address, isc_socket_attach(), and ns_lwreslistener::sock.
Referenced by configure_listener().
| static isc_result_t listener_startclients | ( | ns_lwreslistener_t * | listener | ) | [static] |
Definition at line 618 of file lwresd.c.
References ISC_LIST_EMPTY, ISC_LIST_HEAD, ISC_LIST_NEXT, ISC_LOG_DEBUG, ISC_LOG_ERROR, isc_log_write(), ISC_R_SUCCESS, isc_result_totext(), ns_lwreslistener::lock, LOCK, ns_lwreslistener::manager, ns_lwresd::nclients, NS_LOGCATEGORY_GENERAL, NS_LOGMODULE_LWRESD, ns_lwdclient_startrecv(), ns_lwdclientmgr_create(), ns_lwresd::ntasks, and UNLOCK.
Referenced by configure_listener().
| static void listener_shutdown | ( | ns_lwreslistener_t * | listener | ) | [static] |
Definition at line 667 of file lwresd.c.
References ISC_LIST_HEAD, ISC_LIST_NEXT, isc_task_shutdown(), and ns_lwdclientmgr::task.
Referenced by configure_listener(), and ns_lwresd_configure().
| static isc_result_t find_listener | ( | isc_sockaddr_t * | address, | |
| ns_lwreslistener_t ** | listenerp | |||
| ) | [static] |
Definition at line 678 of file lwresd.c.
References ns_lwreslistener::address, INSIST, ISC_LIST_HEAD, ISC_LIST_NEXT, ISC_R_NOTFOUND, ISC_R_SUCCESS, and isc_sockaddr_equal().
Referenced by configure_listener().
| void ns_lwreslistener_unlinkcm | ( | ns_lwreslistener_t * | listener, | |
| ns_lwdclientmgr_t * | cm | |||
| ) |
link client manager
Definition at line 696 of file lwresd.c.
References ISC_LIST_UNLINK, ns_lwreslistener::lock, LOCK, REQUIRE, UNLOCK, and VALID_LWRESLISTENER.
Referenced by lwdclientmgr_destroy().
| void ns_lwreslistener_linkcm | ( | ns_lwreslistener_t * | listener, | |
| ns_lwdclientmgr_t * | cm | |||
| ) |
unlink client manager
Definition at line 706 of file lwresd.c.
References ISC_LIST_APPEND, REQUIRE, and VALID_LWRESLISTENER.
Referenced by ns_lwdclientmgr_create().
| static isc_result_t configure_listener | ( | isc_sockaddr_t * | address, | |
| ns_lwresd_t * | lwresd, | |||
| isc_mem_t * | mctx, | |||
| ns_lwreslistenerlist_t * | newlisteners | |||
| ) | [static] |
Definition at line 717 of file lwresd.c.
References find_listener(), ISC_LIST_APPEND, ISC_LIST_UNLINK, ISC_LOG_NOTICE, ISC_LOG_WARNING, isc_log_write(), ISC_LOGCATEGORY_GENERAL, ISC_R_SUCCESS, isc_result_totext(), isc_sockaddr_format(), ISC_SOCKADDR_FORMATSIZE, listener_bind(), listener_copysock(), listener_create(), listener_shutdown(), listener_startclients(), NS_LOGMODULE_LWRESD, and ns_lwreslistener_detach().
Referenced by ns_lwresd_configure().
| isc_result_t ns_lwresd_configure | ( | isc_mem_t * | mctx, | |
| const cfg_obj_t * | config | |||
| ) |
Configure lwresd.
Definition at line 778 of file lwresd.c.
References ns_lwreslistener::address, cfg_list_first(), cfg_list_next(), cfg_listelt_value(), cfg_map_get(), CHECK, cleanup(), configure_listener(), INADDR_LOOPBACK, ISC_LIST_APPENDLIST, ISC_LIST_EMPTY, ISC_LIST_HEAD, ISC_LIST_INIT, ISC_LIST_UNLINK, ISC_LOG_NOTICE, isc_log_write(), ISC_LOGCATEGORY_GENERAL, isc_once_do, ISC_R_SUCCESS, isc_sockaddr_format(), ISC_SOCKADDR_FORMATSIZE, isc_sockaddr_fromin(), listener_shutdown(), LOCK, ns_config_getiplist(), ns_config_putiplist(), NS_LOGMODULE_LWRESD, ns_lwdmanager_create(), ns_lwdmanager_detach(), ns_lwreslistener_detach(), once, port, REQUIRE, RUNTIME_CHECK, and UNLOCK.
Referenced by load_configuration().
| void ns_lwresd_shutdown | ( | void | ) |
Trigger shutdown.
Definition at line 883 of file lwresd.c.
References ISC_LIST_EMPTY, ISC_LIST_HEAD, ISC_LIST_UNLINK, isc_once_do, ISC_R_SUCCESS, ns_lwreslistener_detach(), once, and RUNTIME_CHECK.
Referenced by destroy_managers().