adapter.c
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/*
* Copyright (c) 2009 NLNet Labs. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
* IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
*/
#include "adapter/adapter.h"
#include "file.h"
#include "log.h"
#include "status.h"
#include "signer/zone.h"
#include <stdlib.h>
static const char* adapter_str = "adapter";
adapter_type*
adapter_create(const char* str, adapter_mode type, unsigned in)
{
adapter_type* adapter = NULL;
CHECKALLOC(adapter = (adapter_type*) malloc(sizeof(adapter_type)));
adapter->type = type;
adapter->inbound = in;
adapter->error = 0;
adapter->config = NULL;
adapter->config_last_modified = 0;
adapter->configstr = strdup(str);
if (!adapter->configstr) {
ods_log_error("[%s] unable to create adapter: allocator_strdup() "
"failed", adapter_str);
adapter_cleanup(adapter);
return NULL;
}
/* type specific */
switch(adapter->type) {
case ADAPTER_FILE:
break;
case ADAPTER_DNS:
if (adapter->inbound) {
adapter->config = (void*) dnsin_create();
if (!adapter->config) {
ods_log_error("[%s] unable to create adapter: "
"dnsin_create() failed", adapter_str);
adapter_cleanup(adapter);
return NULL;
}
} else {
adapter->config = (void*) dnsout_create();
if (!adapter->config) {
ods_log_error("[%s] unable to create adapter: "
"dnsout_create() failed", adapter_str);
adapter_cleanup(adapter);
return NULL;
}
}
break;
default:
break;
}
return adapter;
}
ods_status
adapter_load_config(adapter_type* adapter)
{
dnsin_type* dnsin = NULL;
dnsout_type* dnsout = NULL;
ods_status status = ODS_STATUS_OK;
if (!adapter || !adapter->configstr) {
return ODS_STATUS_ASSERT_ERR;
}
/* type specific */
switch(adapter->type) {
case ADAPTER_FILE:
break;
case ADAPTER_DNS:
ods_log_assert(adapter->config);
if (adapter->inbound) {
dnsin = (dnsin_type*)adapter->config;
status = dnsin_update(&dnsin, adapter->configstr,
&adapter->config_last_modified);
if (status == ODS_STATUS_OK) {
ods_log_assert(dnsin);
} else if (status != ODS_STATUS_UNCHANGED) {
return status;
}
return ODS_STATUS_OK;
} else { /* outbound */
dnsout = (dnsout_type*)adapter->config;
status = dnsout_update(&dnsout, adapter->configstr,
&adapter->config_last_modified);
if (status == ODS_STATUS_OK) {
ods_log_assert(dnsout);
} else if (status != ODS_STATUS_UNCHANGED) {
return status;
}
}
break;
default:
break;
}
return ODS_STATUS_OK;
}
/*
* Read zone from input adapter.
*
*/
ods_status
adapter_read(zone_type* zone)
{
if (!zone || !zone->adinbound) {
ods_log_error("[%s] unable to read zone: no input adapter",
adapter_str);
return ODS_STATUS_ASSERT_ERR;
}
ods_log_assert(zone->adinbound->configstr);
switch (zone->adinbound->type) {
case ADAPTER_FILE:
ods_log_verbose("[%s] read zone %s from file input adapter %s",
adapter_str, zone->name, zone->adinbound->configstr);
return adfile_read(zone);
case ADAPTER_DNS:
ods_log_verbose("[%s] read zone %s from dns input adapter %s",
adapter_str, zone->name, zone->adinbound->configstr);
return addns_read(zone);
default:
ods_log_error("[%s] unable to read zone %s from adapter: unknown "
"adapter", adapter_str, zone->name);
return ODS_STATUS_ERR;
}
/* not reached */
return ODS_STATUS_ERR;
}
ods_status
adapter_write(zone_type* zone)
{
if (!zone || !zone->db || !zone->adoutbound) {
ods_log_error("[%s] unable to write zone: no output adapter",
adapter_str);
return ODS_STATUS_ASSERT_ERR;
}
ods_log_assert(zone->name);
ods_log_assert(zone->adoutbound->configstr);
switch(zone->adoutbound->type) {
case ADAPTER_FILE:
ods_log_verbose("[%s] write zone %s serial %u to output file "
"adapter %s", adapter_str, zone->name,
zone->db->intserial, zone->adoutbound->configstr);
return adfile_write(zone, zone->adoutbound->configstr);
case ADAPTER_DNS:
return addns_write(zone);
default:
ods_log_error("[%s] unable to write zone %s to adapter: unknown "
"adapter", adapter_str, zone->name);
return ODS_STATUS_ERR;
}
/* not reached */
return ODS_STATUS_ERR;
}
int
adapter_compare(adapter_type* a1, adapter_type* a2)
{
if (!a1 && !a2) {
return 0;
} else if (!a1) {
return -1;
} else if (!a2) {
return 1;
} else if (a1->inbound != a2->inbound) {
return a1->inbound - a2->inbound;
} else if (a1->type != a2->type) {
return a1->type - a2->type;
}
return ods_strcmp(a1->configstr, a2->configstr);
}
void
adapter_cleanup(adapter_type* adapter)
{
if (!adapter) {
return;
}
free((void*)adapter->configstr);
switch(adapter->type) {
case ADAPTER_FILE:
break;
case ADAPTER_DNS:
if (adapter->inbound) {
dnsin_cleanup((dnsin_type*) adapter->config);
} else { /* outbound */
dnsout_cleanup((dnsout_type*) adapter->config);
}
break;
default:
break;
}
free(adapter);
}
namedb_struct::intserial
uint32_t intserial
Definition: namedb.h:54
adapter_compare
int adapter_compare(adapter_type *a1, adapter_type *a2)
Definition: adapter.c:212
dnsout_cleanup
void dnsout_cleanup(dnsout_type *addns)
Definition: addns.c:910
adapter_struct::config
void * config
Definition: adapter.h:61
dnsin_struct
Definition: addns.h:49
adapter_struct::configstr
const char * configstr
Definition: adapter.h:60
zone_struct
Definition: zone.h:60
adapter_load_config
ods_status adapter_load_config(adapter_type *adapter)
Definition: adapter.c:99
adapter_struct::error
unsigned error
Definition: adapter.h:63
adapter_struct::type
adapter_mode type
Definition: adapter.h:58
ADAPTER_DNS
Definition: adapter.h:42
zone_struct::adoutbound
adapter_type * adoutbound
Definition: zone.h:75
adfile_read
ods_status adfile_read(void *zone)
Definition: adfile.c:298
zone_struct::db
namedb_type * db
Definition: zone.h:79
dnsin_cleanup
void dnsin_cleanup(dnsin_type *addns)
Definition: addns.c:893
adapter.h
adfile_write
ods_status adfile_write(void *zone, const char *filename)
Definition: adfile.c:326
adapter_struct::config_last_modified
time_t config_last_modified
Definition: adapter.h:59
zone_struct::adinbound
adapter_type * adinbound
Definition: zone.h:74
adapter_create
adapter_type * adapter_create(const char *str, adapter_mode type, unsigned in)
Definition: adapter.c:48
adapter_write
ods_status adapter_write(zone_type *zone)
Definition: adapter.c:179
addns_read
ods_status addns_read(void *zone)
Definition: addns.c:685
adapter_mode
enum adapter_mode_enum adapter_mode
Definition: adapter.h:44
dnsout_update
ods_status dnsout_update(dnsout_type **addns, const char *filename, time_t *last_mod)
Definition: addns.c:627
zone.h
dnsout_struct
Definition: addns.h:61
adapter_struct
Definition: adapter.h:57
ADAPTER_FILE
Definition: adapter.h:41
zone_struct::name
const char * name
Definition: zone.h:69
addns_write
ods_status addns_write(void *zone)
Definition: addns.c:768
dnsin_create
dnsin_type * dnsin_create(void)
Definition: addns.c:502
dnsin_update
ods_status dnsin_update(dnsin_type **addns, const char *filename, time_t *last_mod)
Definition: addns.c:568
adapter_struct::inbound
unsigned inbound
Definition: adapter.h:62
adapter_cleanup
void adapter_cleanup(adapter_type *adapter)
Definition: adapter.c:234
adapter_read
ods_status adapter_read(zone_type *zone)
Definition: adapter.c:147
dnsout_create
dnsout_type * dnsout_create(void)
Definition: addns.c:518