diff options
Diffstat (limited to 'contrib/dlz/drivers/dlz_stub_driver.c')
| -rw-r--r-- | contrib/dlz/drivers/dlz_stub_driver.c | 336 |
1 files changed, 336 insertions, 0 deletions
diff --git a/contrib/dlz/drivers/dlz_stub_driver.c b/contrib/dlz/drivers/dlz_stub_driver.c new file mode 100644 index 0000000..f873c1e --- /dev/null +++ b/contrib/dlz/drivers/dlz_stub_driver.c @@ -0,0 +1,336 @@ +/* + * Copyright (C) 2002 Stichting NLnet, Netherlands, stichting@nlnet.nl. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the + * above copyright notice and this permission notice appear in all + * copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND STICHTING NLNET + * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL + * STICHTING NLNET BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR + * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS + * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE + * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE + * USE OR PERFORMANCE OF THIS SOFTWARE. + * + * The development of Dynamically Loadable Zones (DLZ) for Bind 9 was + * conceived and contributed by Rob Butler. + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the + * above copyright notice and this permission notice appear in all + * copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND ROB BUTLER + * DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL + * ROB BUTLER BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR + * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS + * OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE + * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE + * USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +/* + * Copyright (C) 1999-2001, 2016 Internet Systems Consortium, Inc. ("ISC") + * + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. + */ + +#ifdef DLZ_STUB + +#include <config.h> +#include <stdio.h> +#include <string.h> +#include <stdlib.h> + +#include <dns/log.h> +#include <dns/sdlz.h> +#include <dns/result.h> + +#include <isc/mem.h> +#include <isc/print.h> +#include <isc/result.h> +#include <isc/util.h> + +#include <named/globals.h> + +#include <dlz/dlz_stub_driver.h> + +static dns_sdlzimplementation_t *dlz_stub = NULL; + +typedef struct config_data { + char *myzone; + char *myname; + char *myip; + isc_mem_t *mctx; +} config_data_t; + +/* + * SDLZ methods + */ + +static isc_result_t +stub_dlz_allnodes(const char *zone, void *driverarg, void *dbdata, + dns_sdlzallnodes_t *allnodes) +{ + config_data_t *cd; + isc_result_t result; + + UNUSED(zone); + UNUSED(driverarg); + + cd = (config_data_t *) dbdata; + + result = dns_sdlz_putnamedrr(allnodes, cd->myname, "soa", 86400, + "web root.localhost. " + "0 28800 7200 604800 86400"); + if (result != ISC_R_SUCCESS) + return (ISC_R_FAILURE); + result = dns_sdlz_putnamedrr(allnodes, "ns", "ns", 86400, cd->myname); + if (result != ISC_R_SUCCESS) + return (ISC_R_FAILURE); + result = dns_sdlz_putnamedrr(allnodes, cd->myname, "a", 1, cd->myip); + if (result != ISC_R_SUCCESS) + return (ISC_R_FAILURE); + return (ISC_R_SUCCESS); +} + +static isc_result_t +stub_dlz_allowzonexfr(void *driverarg, void *dbdata, const char *name, + const char *client) +{ + UNUSED(driverarg); + UNUSED(dbdata); + UNUSED(name); + UNUSED(client); + return ISC_R_SUCCESS; +} + +static isc_result_t +stub_dlz_authority(const char *zone, void *driverarg, void *dbdata, + dns_sdlzlookup_t *lookup) +{ + isc_result_t result; + config_data_t *cd; + + UNUSED(driverarg); + + cd = (config_data_t *) dbdata; + + if (strcmp(zone, cd->myzone) == 0) { + result = dns_sdlz_putsoa(lookup, cd->myname, + "root.localhost.", 0); + if (result != ISC_R_SUCCESS) + return (ISC_R_FAILURE); + + result = dns_sdlz_putrr(lookup, "ns", 86400, cd->myname); + if (result != ISC_R_SUCCESS) + return (ISC_R_FAILURE); + + return (ISC_R_SUCCESS); + } + return (ISC_R_NOTFOUND); +} + +static isc_result_t +stub_dlz_findzonedb(void *driverarg, void *dbdata, const char *name, + dns_clientinfomethods_t *methods, + dns_clientinfo_t *clientinfo) +{ + + config_data_t *cd; + + UNUSED(driverarg); + UNUSED(methods); + UNUSED(clientinfo); + + cd = (config_data_t *) dbdata; + + /* Write info message to log */ + isc_log_write(dns_lctx, DNS_LOGCATEGORY_DATABASE, + DNS_LOGMODULE_DLZ, ISC_LOG_DEBUG(2), + "dlz_stub findzone looking for '%s'", name); + + if (strcmp(cd->myzone, name) == 0) + return (ISC_R_SUCCESS); + else + return (ISC_R_NOTFOUND); +} + + +static isc_result_t +stub_dlz_lookup(const char *zone, const char *name, void *driverarg, + void *dbdata, dns_sdlzlookup_t *lookup, + dns_clientinfomethods_t *methods, dns_clientinfo_t *clientinfo) +{ + isc_result_t result; + config_data_t *cd; + + UNUSED(zone); + UNUSED(driverarg); + UNUSED(methods); + UNUSED(clientinfo); + + cd = (config_data_t *) dbdata; + + if (strcmp(name, cd->myname) == 0) { + result = dns_sdlz_putrr(lookup, "a", 1, cd->myip); + if (result != ISC_R_SUCCESS) + return (ISC_R_FAILURE); + + return (ISC_R_SUCCESS); + } + return (ISC_R_FAILURE); + +} + + +static isc_result_t +stub_dlz_create(const char *dlzname, unsigned int argc, char *argv[], + void *driverarg, void **dbdata) +{ + + config_data_t *cd; + + UNUSED(driverarg); + + if (argc < 4) + return (ISC_R_FAILURE); + /* + * Write info message to log + */ + isc_log_write(dns_lctx, DNS_LOGCATEGORY_DATABASE, + DNS_LOGMODULE_DLZ, ISC_LOG_INFO, + "Loading '%s' using DLZ_stub driver. " + "Zone: %s, Name: %s IP: %s", + dlzname, argv[1], argv[2], argv[3]); + + cd = isc_mem_get(ns_g_mctx, sizeof(config_data_t)); + if ((cd) == NULL) { + return (ISC_R_NOMEMORY); + } + + memset(cd, 0, sizeof(config_data_t)); + + cd->myzone = isc_mem_strdup(ns_g_mctx, argv[1]); + if (cd->myzone == NULL) { + isc_mem_put(ns_g_mctx, cd, sizeof(config_data_t)); + return (ISC_R_NOMEMORY); + } + + cd->myname = isc_mem_strdup(ns_g_mctx, argv[2]); + if (cd->myname == NULL) { + isc_mem_put(ns_g_mctx, cd, sizeof(config_data_t)); + isc_mem_free(ns_g_mctx, cd->myzone); + return (ISC_R_NOMEMORY); + } + + cd->myip = isc_mem_strdup(ns_g_mctx, argv[3]); + if (cd->myip == NULL) { + isc_mem_put(ns_g_mctx, cd, sizeof(config_data_t)); + isc_mem_free(ns_g_mctx, cd->myname); + isc_mem_free(ns_g_mctx, cd->myzone); + return (ISC_R_NOMEMORY); + } + + isc_mem_attach(ns_g_mctx, &cd->mctx); + + *dbdata = cd; + + return(ISC_R_SUCCESS); +} + +static void +stub_dlz_destroy(void *driverarg, void *dbdata) +{ + config_data_t *cd; + isc_mem_t *mctx; + + UNUSED(driverarg); + + cd = (config_data_t *) dbdata; + + /* + * Write debugging message to log + */ + isc_log_write(dns_lctx, DNS_LOGCATEGORY_DATABASE, + DNS_LOGMODULE_DLZ, ISC_LOG_DEBUG(2), + "Unloading DLZ_stub driver."); + + isc_mem_free(ns_g_mctx, cd->myzone); + isc_mem_free(ns_g_mctx, cd->myname); + isc_mem_free(ns_g_mctx, cd->myip); + mctx = cd->mctx; + isc_mem_put(mctx, cd, sizeof(config_data_t)); + isc_mem_detach(&mctx); +} + +static dns_sdlzmethods_t dlz_stub_methods = { + stub_dlz_create, + stub_dlz_destroy, + stub_dlz_findzonedb, + stub_dlz_lookup, + stub_dlz_authority, + stub_dlz_allnodes, + stub_dlz_allowzonexfr, + NULL, + NULL, + NULL, + NULL, + NULL, + NULL, + NULL, +}; + +/*% + * Wrapper around dns_sdlzregister(). + */ +isc_result_t +dlz_stub_init(void) { + isc_result_t result; + + /* + * Write debugging message to log + */ + isc_log_write(dns_lctx, DNS_LOGCATEGORY_DATABASE, + DNS_LOGMODULE_DLZ, ISC_LOG_DEBUG(2), + "Registering DLZ_stub driver."); + + result = dns_sdlzregister("dlz_stub", &dlz_stub_methods, NULL, + DNS_SDLZFLAG_RELATIVEOWNER | + DNS_SDLZFLAG_RELATIVERDATA, + ns_g_mctx, &dlz_stub); + if (result != ISC_R_SUCCESS) { + UNEXPECTED_ERROR(__FILE__, __LINE__, + "dns_sdlzregister() failed: %s", + isc_result_totext(result)); + result = ISC_R_UNEXPECTED; + } + + + return result; +} + +/* + * Wrapper around dns_sdlzunregister(). + */ +void +dlz_stub_clear(void) { + + /* + * Write debugging message to log + */ + isc_log_write(dns_lctx, DNS_LOGCATEGORY_DATABASE, + DNS_LOGMODULE_DLZ, ISC_LOG_DEBUG(2), + "Unregistering DLZ_stub driver."); + + if (dlz_stub != NULL) + dns_sdlzunregister(&dlz_stub); +} + +#endif |