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Diffstat (limited to 'contrib/bind9/bin/named/builtin.c')
| -rw-r--r-- | contrib/bind9/bin/named/builtin.c | 307 |
1 files changed, 0 insertions, 307 deletions
diff --git a/contrib/bind9/bin/named/builtin.c b/contrib/bind9/bin/named/builtin.c deleted file mode 100644 index 06cbd4a..0000000 --- a/contrib/bind9/bin/named/builtin.c +++ /dev/null @@ -1,307 +0,0 @@ -/* - * Copyright (C) 2004, 2005 Internet Systems Consortium, Inc. ("ISC") - * Copyright (C) 2001-2003 Internet Software Consortium. - * - * 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 ISC DISCLAIMS ALL WARRANTIES WITH - * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY - * AND FITNESS. IN NO EVENT SHALL ISC 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. - */ - -/* $Id: builtin.c,v 1.5.18.5 2005/08/23 04:12:38 marka Exp $ */ - -/*! \file - * \brief - * The built-in "version", "hostname", "id", "authors" and "empty" databases. - */ - -#include <config.h> - -#include <string.h> -#include <stdio.h> - -#include <isc/mem.h> -#include <isc/print.h> -#include <isc/result.h> -#include <isc/util.h> - -#include <dns/result.h> -#include <dns/sdb.h> - -#include <named/builtin.h> -#include <named/globals.h> -#include <named/server.h> -#include <named/os.h> - -typedef struct builtin builtin_t; - -static isc_result_t do_version_lookup(dns_sdblookup_t *lookup); -static isc_result_t do_hostname_lookup(dns_sdblookup_t *lookup); -static isc_result_t do_authors_lookup(dns_sdblookup_t *lookup); -static isc_result_t do_id_lookup(dns_sdblookup_t *lookup); -static isc_result_t do_empty_lookup(dns_sdblookup_t *lookup); - -/* - * We can't use function pointers as the db_data directly - * because ANSI C does not guarantee that function pointers - * can safely be cast to void pointers and back. - */ - -struct builtin { - isc_result_t (*do_lookup)(dns_sdblookup_t *lookup); - char *server; - char *contact; -}; - -static builtin_t version_builtin = { do_version_lookup, NULL, NULL }; -static builtin_t hostname_builtin = { do_hostname_lookup, NULL, NULL }; -static builtin_t authors_builtin = { do_authors_lookup, NULL, NULL }; -static builtin_t id_builtin = { do_id_lookup, NULL, NULL }; -static builtin_t empty_builtin = { do_empty_lookup, NULL, NULL }; - -static dns_sdbimplementation_t *builtin_impl; - -static isc_result_t -builtin_lookup(const char *zone, const char *name, void *dbdata, - dns_sdblookup_t *lookup) -{ - builtin_t *b = (builtin_t *) dbdata; - - UNUSED(zone); - - if (strcmp(name, "@") == 0) - return (b->do_lookup(lookup)); - else - return (ISC_R_NOTFOUND); -} - -static isc_result_t -put_txt(dns_sdblookup_t *lookup, const char *text) { - unsigned char buf[256]; - unsigned int len = strlen(text); - if (len > 255) - len = 255; /* Silently truncate */ - buf[0] = len; - memcpy(&buf[1], text, len); - return (dns_sdb_putrdata(lookup, dns_rdatatype_txt, 0, buf, len + 1)); -} - -static isc_result_t -do_version_lookup(dns_sdblookup_t *lookup) { - if (ns_g_server->version_set) { - if (ns_g_server->version == NULL) - return (ISC_R_SUCCESS); - else - return (put_txt(lookup, ns_g_server->version)); - } else { - return (put_txt(lookup, ns_g_version)); - } -} - -static isc_result_t -do_hostname_lookup(dns_sdblookup_t *lookup) { - if (ns_g_server->hostname_set) { - if (ns_g_server->hostname == NULL) - return (ISC_R_SUCCESS); - else - return (put_txt(lookup, ns_g_server->hostname)); - } else { - char buf[256]; - isc_result_t result = ns_os_gethostname(buf, sizeof(buf)); - if (result != ISC_R_SUCCESS) - return (result); - return (put_txt(lookup, buf)); - } -} - -static isc_result_t -do_authors_lookup(dns_sdblookup_t *lookup) { - isc_result_t result; - const char **p; - static const char *authors[] = { - "Mark Andrews", - "James Brister", - "Ben Cottrell", - "Michael Graff", - "Andreas Gustafsson", - "Bob Halley", - "David Lawrence", - "Danny Mayer", - "Damien Neil", - "Matt Nelson", - "Michael Sawyer", - "Brian Wellington", - NULL - }; - - /* - * If a version string is specified, disable the authors.bind zone. - */ - if (ns_g_server->version_set) - return (ISC_R_SUCCESS); - - for (p = authors; *p != NULL; p++) { - result = put_txt(lookup, *p); - if (result != ISC_R_SUCCESS) - return (result); - } - return (ISC_R_SUCCESS); -} - -static isc_result_t -do_id_lookup(dns_sdblookup_t *lookup) { - - if (ns_g_server->server_usehostname) { - char buf[256]; - isc_result_t result = ns_os_gethostname(buf, sizeof(buf)); - if (result != ISC_R_SUCCESS) - return (result); - return (put_txt(lookup, buf)); - } - - if (ns_g_server->server_id == NULL) - return (ISC_R_SUCCESS); - else - return (put_txt(lookup, ns_g_server->server_id)); -} - -static isc_result_t -do_empty_lookup(dns_sdblookup_t *lookup) { - - UNUSED(lookup); - return (ISC_R_SUCCESS); -} - -static isc_result_t -builtin_authority(const char *zone, void *dbdata, dns_sdblookup_t *lookup) { - isc_result_t result; - const char *contact = "hostmaster"; - const char *server = "@"; - builtin_t *b = (builtin_t *) dbdata; - - UNUSED(zone); - UNUSED(dbdata); - - if (b == &empty_builtin) { - server = "."; - contact = "."; - } else { - if (b->server != NULL) - server = b->server; - if (b->contact != NULL) - contact = b->contact; - } - - result = dns_sdb_putsoa(lookup, server, contact, 0); - if (result != ISC_R_SUCCESS) - return (ISC_R_FAILURE); - - result = dns_sdb_putrr(lookup, "ns", 0, server); - if (result != ISC_R_SUCCESS) - return (ISC_R_FAILURE); - - return (ISC_R_SUCCESS); -} - -static isc_result_t -builtin_create(const char *zone, int argc, char **argv, - void *driverdata, void **dbdata) -{ - REQUIRE(argc >= 1); - - UNUSED(zone); - UNUSED(driverdata); - - if (strcmp(argv[0], "empty") == 0) { - if (argc != 3) - return (DNS_R_SYNTAX); - } else if (argc != 1) - return (DNS_R_SYNTAX); - - if (strcmp(argv[0], "version") == 0) - *dbdata = &version_builtin; - else if (strcmp(argv[0], "hostname") == 0) - *dbdata = &hostname_builtin; - else if (strcmp(argv[0], "authors") == 0) - *dbdata = &authors_builtin; - else if (strcmp(argv[0], "id") == 0) - *dbdata = &id_builtin; - else if (strcmp(argv[0], "empty") == 0) { - builtin_t *empty; - char *server; - char *contact; - /* - * We don't want built-in zones to fail. Fallback to - * the static configuration if memory allocation fails. - */ - empty = isc_mem_get(ns_g_mctx, sizeof(*empty)); - server = isc_mem_strdup(ns_g_mctx, argv[1]); - contact = isc_mem_strdup(ns_g_mctx, argv[2]); - if (empty == NULL || server == NULL || contact == NULL) { - *dbdata = &empty_builtin; - if (server != NULL) - isc_mem_free(ns_g_mctx, server); - if (contact != NULL) - isc_mem_free(ns_g_mctx, contact); - if (empty != NULL) - isc_mem_put(ns_g_mctx, empty, sizeof (*empty)); - } else { - memcpy(empty, &empty_builtin, sizeof (empty_builtin)); - empty->server = server; - empty->contact = contact; - *dbdata = empty; - } - } else - return (ISC_R_NOTIMPLEMENTED); - return (ISC_R_SUCCESS); -} - -static void -builtin_destroy(const char *zone, void *driverdata, void **dbdata) { - builtin_t *b = (builtin_t *) *dbdata; - - UNUSED(zone); - UNUSED(driverdata); - - /* - * Don't free the static versions. - */ - if (*dbdata == &version_builtin || *dbdata == &hostname_builtin || - *dbdata == &authors_builtin || *dbdata == &id_builtin || - *dbdata == &empty_builtin) - return; - - isc_mem_free(ns_g_mctx, b->server); - isc_mem_free(ns_g_mctx, b->contact); - isc_mem_put(ns_g_mctx, b, sizeof (*b)); -} - -static dns_sdbmethods_t builtin_methods = { - builtin_lookup, - builtin_authority, - NULL, /* allnodes */ - builtin_create, - builtin_destroy -}; - -isc_result_t -ns_builtin_init(void) { - RUNTIME_CHECK(dns_sdb_register("_builtin", &builtin_methods, NULL, - DNS_SDBFLAG_RELATIVEOWNER | - DNS_SDBFLAG_RELATIVERDATA, - ns_g_mctx, &builtin_impl) - == ISC_R_SUCCESS); - return (ISC_R_SUCCESS); -} - -void -ns_builtin_deinit(void) { - dns_sdb_unregister(&builtin_impl); -} |
