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-rw-r--r--tests/libtest/ns.c669
1 files changed, 669 insertions, 0 deletions
diff --git a/tests/libtest/ns.c b/tests/libtest/ns.c
new file mode 100644
index 0000000..4a53ad8
--- /dev/null
+++ b/tests/libtest/ns.c
@@ -0,0 +1,669 @@
+/*
+ * Copyright (C) Internet Systems Consortium, Inc. ("ISC")
+ *
+ * SPDX-License-Identifier: MPL-2.0
+ *
+ * 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 https://mozilla.org/MPL/2.0/.
+ *
+ * See the COPYRIGHT file distributed with this work for additional
+ * information regarding copyright ownership.
+ */
+
+/*! \file */
+
+#include <inttypes.h>
+#include <stdbool.h>
+#include <stdlib.h>
+#include <time.h>
+#include <unistd.h>
+
+#include <isc/buffer.h>
+#include <isc/file.h>
+#include <isc/hash.h>
+#include <isc/managers.h>
+#include <isc/mem.h>
+#include <isc/netmgr.h>
+#include <isc/os.h>
+#include <isc/print.h>
+#include <isc/random.h>
+#include <isc/resource.h>
+#include <isc/result.h>
+#include <isc/stdio.h>
+#include <isc/string.h>
+#include <isc/task.h>
+#include <isc/timer.h>
+#include <isc/util.h>
+
+#include <dns/cache.h>
+#include <dns/db.h>
+#include <dns/dispatch.h>
+#include <dns/fixedname.h>
+#include <dns/log.h>
+#include <dns/name.h>
+#include <dns/view.h>
+#include <dns/zone.h>
+
+#include <ns/client.h>
+#include <ns/hooks.h>
+#include <ns/interfacemgr.h>
+#include <ns/server.h>
+
+#include <tests/ns.h>
+
+dns_dispatchmgr_t *dispatchmgr = NULL;
+ns_clientmgr_t *clientmgr = NULL;
+ns_interfacemgr_t *interfacemgr = NULL;
+ns_server_t *sctx = NULL;
+bool debug_mem_record = true;
+
+static isc_result_t
+matchview(isc_netaddr_t *srcaddr, isc_netaddr_t *destaddr,
+ dns_message_t *message, dns_aclenv_t *env, isc_result_t *sigresultp,
+ dns_view_t **viewp) {
+ UNUSED(srcaddr);
+ UNUSED(destaddr);
+ UNUSED(message);
+ UNUSED(env);
+ UNUSED(sigresultp);
+ UNUSED(viewp);
+
+ return (ISC_R_NOTIMPLEMENTED);
+}
+
+int
+setup_server(void **state) {
+ isc_result_t result;
+ ns_listenlist_t *listenon = NULL;
+ in_port_t port = 5300 + isc_random8();
+
+ setup_managers(state);
+
+ ns_server_create(mctx, matchview, &sctx);
+
+ result = dns_dispatchmgr_create(mctx, netmgr, &dispatchmgr);
+ if (result != ISC_R_SUCCESS) {
+ return (-1);
+ }
+
+ result = ns_interfacemgr_create(mctx, sctx, taskmgr, timermgr, netmgr,
+ dispatchmgr, maintask, NULL, workers,
+ false, &interfacemgr);
+ if (result != ISC_R_SUCCESS) {
+ return (-1);
+ }
+
+ result = ns_listenlist_default(mctx, port, true, AF_INET, &listenon);
+ if (result != ISC_R_SUCCESS) {
+ return (-1);
+ }
+
+ ns_interfacemgr_setlistenon4(interfacemgr, listenon);
+ ns_listenlist_detach(&listenon);
+
+ clientmgr = ns_interfacemgr_getclientmgr(interfacemgr);
+
+ return (0);
+}
+
+int
+teardown_server(void **state) {
+ if (interfacemgr != NULL) {
+ ns_interfacemgr_shutdown(interfacemgr);
+ ns_interfacemgr_detach(&interfacemgr);
+ }
+
+ if (dispatchmgr != NULL) {
+ dns_dispatchmgr_detach(&dispatchmgr);
+ }
+
+ if (sctx != NULL) {
+ ns_server_detach(&sctx);
+ }
+
+ teardown_managers(state);
+ return (0);
+}
+
+static dns_zone_t *served_zone = NULL;
+
+/*
+ * We don't want to use netmgr-based client accounting, we need to emulate it.
+ */
+atomic_uint_fast32_t client_refs[32];
+atomic_uintptr_t client_addrs[32];
+
+void
+isc__nmhandle_attach(isc_nmhandle_t *source, isc_nmhandle_t **targetp FLARG) {
+ ns_client_t *client = (ns_client_t *)source;
+ int i;
+
+ for (i = 0; i < 32; i++) {
+ if (atomic_load(&client_addrs[i]) == (uintptr_t)client) {
+ break;
+ }
+ }
+ INSIST(i < 32);
+ INSIST(atomic_load(&client_refs[i]) > 0);
+
+ atomic_fetch_add(&client_refs[i], 1);
+
+ *targetp = source;
+ return;
+}
+
+void
+isc__nmhandle_detach(isc_nmhandle_t **handlep FLARG) {
+ isc_nmhandle_t *handle = *handlep;
+ ns_client_t *client = (ns_client_t *)handle;
+ int i;
+
+ *handlep = NULL;
+
+ for (i = 0; i < 32; i++) {
+ if (atomic_load(&client_addrs[i]) == (uintptr_t)client) {
+ break;
+ }
+ }
+ INSIST(i < 32);
+
+ if (atomic_fetch_sub(&client_refs[i], 1) == 1) {
+ dns_view_detach(&client->view);
+ client->state = 4;
+ ns__client_reset_cb(client);
+ ns__client_put_cb(client);
+ isc_mem_put(mctx, client, sizeof(ns_client_t));
+ atomic_store(&client_addrs[i], (uintptr_t)NULL);
+ }
+
+ return;
+}
+
+isc_result_t
+ns_test_serve_zone(const char *zonename, const char *filename,
+ dns_view_t *view) {
+ isc_result_t result;
+ dns_db_t *db = NULL;
+
+ /*
+ * Prepare zone structure for further processing.
+ */
+ result = dns_test_makezone(zonename, &served_zone, view, false);
+ if (result != ISC_R_SUCCESS) {
+ return (result);
+ }
+
+ /*
+ * Start zone manager.
+ */
+ result = dns_test_setupzonemgr();
+ if (result != ISC_R_SUCCESS) {
+ goto free_zone;
+ }
+
+ /*
+ * Add the zone to the zone manager.
+ */
+ result = dns_test_managezone(served_zone);
+ if (result != ISC_R_SUCCESS) {
+ goto close_zonemgr;
+ }
+
+ view->nocookieudp = 512;
+
+ /*
+ * Set path to the master file for the zone and then load it.
+ */
+ dns_zone_setfile(served_zone, filename, dns_masterformat_text,
+ &dns_master_style_default);
+ result = dns_zone_load(served_zone, false);
+ if (result != ISC_R_SUCCESS) {
+ goto release_zone;
+ }
+
+ /*
+ * The zone should now be loaded; test it.
+ */
+ result = dns_zone_getdb(served_zone, &db);
+ if (result != ISC_R_SUCCESS) {
+ goto release_zone;
+ }
+ if (db != NULL) {
+ dns_db_detach(&db);
+ }
+
+ return (ISC_R_SUCCESS);
+
+release_zone:
+ dns_test_releasezone(served_zone);
+close_zonemgr:
+ dns_test_closezonemgr();
+free_zone:
+ dns_zone_detach(&served_zone);
+
+ return (result);
+}
+
+void
+ns_test_cleanup_zone(void) {
+ dns_test_releasezone(served_zone);
+ dns_test_closezonemgr();
+
+ dns_zone_detach(&served_zone);
+}
+
+isc_result_t
+ns_test_getclient(ns_interface_t *ifp0, bool tcp, ns_client_t **clientp) {
+ isc_result_t result;
+ ns_client_t *client = isc_mem_get(mctx, sizeof(ns_client_t));
+ int i;
+
+ UNUSED(ifp0);
+ UNUSED(tcp);
+
+ result = ns__client_setup(client, clientmgr, true);
+
+ for (i = 0; i < 32; i++) {
+ if (atomic_load(&client_addrs[i]) == (uintptr_t)NULL ||
+ atomic_load(&client_addrs[i]) == (uintptr_t)client)
+ {
+ break;
+ }
+ }
+ REQUIRE(i < 32);
+
+ atomic_store(&client_refs[i], 2);
+ atomic_store(&client_addrs[i], (uintptr_t)client);
+ client->handle = (isc_nmhandle_t *)client; /* Hack */
+ *clientp = client;
+
+ return (result);
+}
+
+/*%
+ * Synthesize a DNS message based on supplied QNAME, QTYPE and flags, then
+ * parse it and store the results in client->message.
+ */
+static isc_result_t
+attach_query_msg_to_client(ns_client_t *client, const char *qnamestr,
+ dns_rdatatype_t qtype, unsigned int qflags) {
+ dns_rdataset_t *qrdataset = NULL;
+ dns_message_t *message = NULL;
+ unsigned char query[65536];
+ dns_name_t *qname = NULL;
+ isc_buffer_t querybuf;
+ dns_compress_t cctx;
+ isc_result_t result;
+
+ REQUIRE(client != NULL);
+ REQUIRE(qnamestr != NULL);
+
+ /*
+ * Create a new DNS message holding a query.
+ */
+ dns_message_create(mctx, DNS_MESSAGE_INTENTRENDER, &message);
+
+ /*
+ * Set query ID to a random value.
+ */
+ message->id = isc_random16();
+
+ /*
+ * Set query flags as requested by the caller.
+ */
+ message->flags = qflags;
+
+ /*
+ * Allocate structures required to construct the query.
+ */
+ result = dns_message_gettemprdataset(message, &qrdataset);
+ if (result != ISC_R_SUCCESS) {
+ goto destroy_message;
+ }
+ result = dns_message_gettempname(message, &qname);
+ if (result != ISC_R_SUCCESS) {
+ goto put_rdataset;
+ }
+
+ /*
+ * Convert "qnamestr" to a DNS name, create a question rdataset of
+ * class IN and type "qtype", link the two and add the result to the
+ * QUESTION section of the query.
+ */
+ result = dns_name_fromstring(qname, qnamestr, 0, mctx);
+ if (result != ISC_R_SUCCESS) {
+ goto put_name;
+ }
+ dns_rdataset_makequestion(qrdataset, dns_rdataclass_in, qtype);
+ ISC_LIST_APPEND(qname->list, qrdataset, link);
+ dns_message_addname(message, qname, DNS_SECTION_QUESTION);
+
+ /*
+ * Render the query.
+ */
+ dns_compress_init(&cctx, -1, mctx);
+ isc_buffer_init(&querybuf, query, sizeof(query));
+ result = dns_message_renderbegin(message, &cctx, &querybuf);
+ if (result != ISC_R_SUCCESS) {
+ goto destroy_message;
+ }
+ result = dns_message_rendersection(message, DNS_SECTION_QUESTION, 0);
+ if (result != ISC_R_SUCCESS) {
+ goto destroy_message;
+ }
+ result = dns_message_renderend(message);
+ if (result != ISC_R_SUCCESS) {
+ goto destroy_message;
+ }
+ dns_compress_invalidate(&cctx);
+
+ /*
+ * Destroy the created message as it was rendered into "querybuf" and
+ * the latter is all we are going to need from now on.
+ */
+ dns_message_detach(&message);
+
+ /*
+ * Parse the rendered query, storing results in client->message.
+ */
+ isc_buffer_first(&querybuf);
+ return (dns_message_parse(client->message, &querybuf, 0));
+
+put_name:
+ dns_message_puttempname(message, &qname);
+put_rdataset:
+ dns_message_puttemprdataset(message, &qrdataset);
+destroy_message:
+ dns_message_detach(&message);
+
+ return (result);
+}
+
+/*%
+ * A hook action which stores the query context pointed to by "arg" at
+ * "data". Causes execution to be interrupted at hook insertion
+ * point.
+ */
+static ns_hookresult_t
+extract_qctx(void *arg, void *data, isc_result_t *resultp) {
+ query_ctx_t **qctxp;
+ query_ctx_t *qctx;
+
+ REQUIRE(arg != NULL);
+ REQUIRE(data != NULL);
+ REQUIRE(resultp != NULL);
+
+ /*
+ * qctx is a stack variable in lib/ns/query.c. Its contents need to be
+ * duplicated or otherwise they will become invalidated once the stack
+ * gets unwound.
+ */
+ qctx = isc_mem_get(mctx, sizeof(*qctx));
+ if (qctx != NULL) {
+ memmove(qctx, (query_ctx_t *)arg, sizeof(*qctx));
+ }
+
+ qctxp = (query_ctx_t **)data;
+ /*
+ * If memory allocation failed, the supplied pointer will simply be set
+ * to NULL. We rely on the user of this hook to react properly.
+ */
+ *qctxp = qctx;
+ *resultp = ISC_R_UNSET;
+
+ return (NS_HOOK_RETURN);
+}
+
+/*%
+ * Initialize a query context for "client" and store it in "qctxp".
+ *
+ * Requires:
+ *
+ * \li "client->message" to hold a parsed DNS query.
+ */
+static isc_result_t
+create_qctx_for_client(ns_client_t *client, query_ctx_t **qctxp) {
+ ns_hooktable_t *saved_hook_table = NULL, *query_hooks = NULL;
+ const ns_hook_t hook = {
+ .action = extract_qctx,
+ .action_data = qctxp,
+ };
+
+ REQUIRE(client != NULL);
+ REQUIRE(qctxp != NULL);
+ REQUIRE(*qctxp == NULL);
+
+ /*
+ * Call ns_query_start() to initialize a query context for given
+ * client, but first hook into query_setup() so that we can just
+ * extract an initialized query context, without kicking off any
+ * further processing. Make sure we do not overwrite any previously
+ * set hooks.
+ */
+
+ ns_hooktable_create(mctx, &query_hooks);
+ ns_hook_add(query_hooks, mctx, NS_QUERY_SETUP, &hook);
+
+ saved_hook_table = ns__hook_table;
+ ns__hook_table = query_hooks;
+
+ ns_query_start(client, client->handle);
+
+ ns__hook_table = saved_hook_table;
+ ns_hooktable_free(mctx, (void **)&query_hooks);
+
+ isc_nmhandle_detach(&client->reqhandle);
+
+ if (*qctxp == NULL) {
+ return (ISC_R_NOMEMORY);
+ } else {
+ return (ISC_R_SUCCESS);
+ }
+}
+
+isc_result_t
+ns_test_qctx_create(const ns_test_qctx_create_params_t *params,
+ query_ctx_t **qctxp) {
+ ns_client_t *client = NULL;
+ isc_result_t result;
+ isc_nmhandle_t *handle = NULL;
+
+ REQUIRE(params != NULL);
+ REQUIRE(params->qname != NULL);
+ REQUIRE(qctxp != NULL);
+ REQUIRE(*qctxp == NULL);
+
+ /*
+ * Allocate and initialize a client structure.
+ */
+ result = ns_test_getclient(NULL, false, &client);
+ if (result != ISC_R_SUCCESS) {
+ return (result);
+ }
+ TIME_NOW(&client->tnow);
+
+ /*
+ * Every client needs to belong to a view.
+ */
+ result = dns_test_makeview("view", params->with_cache, &client->view);
+ if (result != ISC_R_SUCCESS) {
+ goto detach_client;
+ }
+
+ /*
+ * Synthesize a DNS query using given QNAME, QTYPE and flags, storing
+ * it in client->message.
+ */
+ result = attach_query_msg_to_client(client, params->qname,
+ params->qtype, params->qflags);
+ if (result != ISC_R_SUCCESS) {
+ goto detach_view;
+ }
+
+ /*
+ * Allow recursion for the client. As NS_CLIENTATTR_RA normally gets
+ * set in ns__client_request(), i.e. earlier than the unit tests hook
+ * into the call chain, just set it manually.
+ */
+ client->attributes |= NS_CLIENTATTR_RA;
+
+ /*
+ * Create a query context for a client sending the previously
+ * synthesized query.
+ */
+ result = create_qctx_for_client(client, qctxp);
+ if (result != ISC_R_SUCCESS) {
+ goto detach_query;
+ }
+
+ /*
+ * The reference count for "client" is now at 2, so we need to
+ * decrement it in order for it to drop to zero when "qctx" gets
+ * destroyed.
+ */
+ handle = client->handle;
+ isc_nmhandle_detach(&handle);
+
+ return (ISC_R_SUCCESS);
+
+detach_query:
+ dns_message_detach(&client->message);
+detach_view:
+ dns_view_detach(&client->view);
+detach_client:
+ isc_nmhandle_detach(&client->handle);
+
+ return (result);
+}
+
+void
+ns_test_qctx_destroy(query_ctx_t **qctxp) {
+ query_ctx_t *qctx;
+
+ REQUIRE(qctxp != NULL);
+ REQUIRE(*qctxp != NULL);
+
+ qctx = *qctxp;
+ *qctxp = NULL;
+
+ if (qctx->zone != NULL) {
+ dns_zone_detach(&qctx->zone);
+ }
+ if (qctx->db != NULL) {
+ dns_db_detach(&qctx->db);
+ }
+ if (qctx->client != NULL) {
+ isc_nmhandle_detach(&qctx->client->handle);
+ }
+
+ isc_mem_put(mctx, qctx, sizeof(*qctx));
+}
+
+ns_hookresult_t
+ns_test_hook_catch_call(void *arg, void *data, isc_result_t *resultp) {
+ UNUSED(arg);
+ UNUSED(data);
+
+ *resultp = ISC_R_UNSET;
+
+ return (NS_HOOK_RETURN);
+}
+
+isc_result_t
+ns_test_loaddb(dns_db_t **db, dns_dbtype_t dbtype, const char *origin,
+ const char *testfile) {
+ isc_result_t result;
+ dns_fixedname_t fixed;
+ dns_name_t *name;
+
+ name = dns_fixedname_initname(&fixed);
+
+ result = dns_name_fromstring(name, origin, 0, NULL);
+ if (result != ISC_R_SUCCESS) {
+ return (result);
+ }
+
+ result = dns_db_create(mctx, "rbt", name, dbtype, dns_rdataclass_in, 0,
+ NULL, db);
+ if (result != ISC_R_SUCCESS) {
+ return (result);
+ }
+
+ result = dns_db_load(*db, testfile, dns_masterformat_text, 0);
+ return (result);
+}
+
+static int
+fromhex(char c) {
+ if (c >= '0' && c <= '9') {
+ return (c - '0');
+ } else if (c >= 'a' && c <= 'f') {
+ return (c - 'a' + 10);
+ } else if (c >= 'A' && c <= 'F') {
+ return (c - 'A' + 10);
+ }
+
+ printf("bad input format: %02x\n", c);
+ exit(3);
+}
+
+isc_result_t
+ns_test_getdata(const char *file, unsigned char *buf, size_t bufsiz,
+ size_t *sizep) {
+ isc_result_t result;
+ unsigned char *bp;
+ char *rp, *wp;
+ char s[BUFSIZ];
+ size_t len, i;
+ FILE *f = NULL;
+ int n;
+
+ result = isc_stdio_open(file, "r", &f);
+ if (result != ISC_R_SUCCESS) {
+ return (result);
+ }
+
+ bp = buf;
+ while (fgets(s, sizeof(s), f) != NULL) {
+ rp = s;
+ wp = s;
+ len = 0;
+ while (*rp != '\0') {
+ if (*rp == '#') {
+ break;
+ }
+ if (*rp != ' ' && *rp != '\t' && *rp != '\r' &&
+ *rp != '\n')
+ {
+ *wp++ = *rp;
+ len++;
+ }
+ rp++;
+ }
+ if (len == 0U) {
+ continue;
+ }
+ if (len % 2 != 0U) {
+ CHECK(ISC_R_UNEXPECTEDEND);
+ }
+ if (len > bufsiz * 2) {
+ CHECK(ISC_R_NOSPACE);
+ }
+ rp = s;
+ for (i = 0; i < len; i += 2) {
+ n = fromhex(*rp++);
+ n *= 16;
+ n += fromhex(*rp++);
+ *bp++ = n;
+ }
+ }
+
+ *sizep = bp - buf;
+
+ result = ISC_R_SUCCESS;
+
+cleanup:
+ isc_stdio_close(f);
+ return (result);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-17 09:20:06 +0000