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-rw-r--r--tests/libtest/dns.c501
1 files changed, 501 insertions, 0 deletions
diff --git a/tests/libtest/dns.c b/tests/libtest/dns.c
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--- /dev/null
+++ b/tests/libtest/dns.c
@@ -0,0 +1,501 @@
+/*
+ * 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 <sched.h> /* IWYU pragma: keep */
+#include <setjmp.h>
+#include <stdarg.h>
+#include <stdbool.h>
+#include <stddef.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+
+#define UNIT_TESTING
+#include <cmocka.h>
+
+#include <isc/buffer.h>
+#include <isc/file.h>
+#include <isc/hash.h>
+#include <isc/hex.h>
+#include <isc/lex.h>
+#include <isc/managers.h>
+#include <isc/mem.h>
+#include <isc/netmgr.h>
+#include <isc/os.h>
+#include <isc/print.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/callbacks.h>
+#include <dns/db.h>
+#include <dns/fixedname.h>
+#include <dns/log.h>
+#include <dns/name.h>
+#include <dns/view.h>
+#include <dns/zone.h>
+
+#include <tests/dns.h>
+
+dns_zonemgr_t *zonemgr = NULL;
+
+/*
+ * Create a view.
+ */
+isc_result_t
+dns_test_makeview(const char *name, bool with_cache, dns_view_t **viewp) {
+ isc_result_t result;
+ dns_view_t *view = NULL;
+ dns_cache_t *cache = NULL;
+
+ result = dns_view_create(mctx, dns_rdataclass_in, name, &view);
+ if (result != ISC_R_SUCCESS) {
+ return (result);
+ }
+
+ if (with_cache) {
+ result = dns_cache_create(mctx, mctx, taskmgr, timermgr,
+ dns_rdataclass_in, "", "rbt", 0, NULL,
+ &cache);
+ if (result != ISC_R_SUCCESS) {
+ dns_view_detach(&view);
+ return (result);
+ }
+
+ dns_view_setcache(view, cache, false);
+ /*
+ * Reference count for "cache" is now at 2, so decrement it in
+ * order for the cache to be automatically freed when "view"
+ * gets freed.
+ */
+ dns_cache_detach(&cache);
+ }
+
+ *viewp = view;
+
+ return (ISC_R_SUCCESS);
+}
+
+isc_result_t
+dns_test_makezone(const char *name, dns_zone_t **zonep, dns_view_t *view,
+ bool createview) {
+ dns_fixedname_t fixed_origin;
+ dns_zone_t *zone = NULL;
+ isc_result_t result;
+ dns_name_t *origin;
+
+ REQUIRE(view == NULL || !createview);
+
+ /*
+ * Create the zone structure.
+ */
+ result = dns_zone_create(&zone, mctx);
+ if (result != ISC_R_SUCCESS) {
+ return (result);
+ }
+
+ /*
+ * Set zone type and origin.
+ */
+ dns_zone_settype(zone, dns_zone_primary);
+ origin = dns_fixedname_initname(&fixed_origin);
+ result = dns_name_fromstring(origin, name, 0, NULL);
+ if (result != ISC_R_SUCCESS) {
+ goto detach_zone;
+ }
+ result = dns_zone_setorigin(zone, origin);
+ if (result != ISC_R_SUCCESS) {
+ goto detach_zone;
+ }
+
+ /*
+ * If requested, create a view.
+ */
+ if (createview) {
+ result = dns_test_makeview("view", false, &view);
+ if (result != ISC_R_SUCCESS) {
+ goto detach_zone;
+ }
+ }
+
+ /*
+ * If a view was passed as an argument or created above, attach the
+ * created zone to it. Otherwise, set the zone's class to IN.
+ */
+ if (view != NULL) {
+ dns_zone_setview(zone, view);
+ dns_zone_setclass(zone, view->rdclass);
+ dns_view_addzone(view, zone);
+ } else {
+ dns_zone_setclass(zone, dns_rdataclass_in);
+ }
+
+ *zonep = zone;
+
+ return (ISC_R_SUCCESS);
+
+detach_zone:
+ dns_zone_detach(&zone);
+
+ return (result);
+}
+
+isc_result_t
+dns_test_setupzonemgr(void) {
+ isc_result_t result;
+ REQUIRE(zonemgr == NULL);
+
+ result = dns_zonemgr_create(mctx, taskmgr, timermgr, netmgr, &zonemgr);
+ return (result);
+}
+
+isc_result_t
+dns_test_managezone(dns_zone_t *zone) {
+ isc_result_t result;
+ REQUIRE(zonemgr != NULL);
+
+ result = dns_zonemgr_setsize(zonemgr, 1);
+ if (result != ISC_R_SUCCESS) {
+ return (result);
+ }
+
+ result = dns_zonemgr_managezone(zonemgr, zone);
+ return (result);
+}
+
+void
+dns_test_releasezone(dns_zone_t *zone) {
+ REQUIRE(zonemgr != NULL);
+ dns_zonemgr_releasezone(zonemgr, zone);
+}
+
+void
+dns_test_closezonemgr(void) {
+ REQUIRE(zonemgr != NULL);
+
+ dns_zonemgr_shutdown(zonemgr);
+ dns_zonemgr_detach(&zonemgr);
+}
+
+/*
+ * Sleep for 'usec' microseconds.
+ */
+void
+dns_test_nap(uint32_t usec) {
+ struct timespec ts;
+
+ ts.tv_sec = usec / 1000000;
+ ts.tv_nsec = (usec % 1000000) * 1000;
+ nanosleep(&ts, NULL);
+}
+
+isc_result_t
+dns_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);
+}
+
+/*
+ * Format contents of given memory region as a hex string, using the buffer
+ * of length 'buflen' pointed to by 'buf'. 'buflen' must be at least three
+ * times 'len'. Always returns 'buf'.
+ */
+char *
+dns_test_tohex(const unsigned char *data, size_t len, char *buf,
+ size_t buflen) {
+ isc_constregion_t source = { .base = data, .length = len };
+ isc_buffer_t target;
+ isc_result_t result;
+
+ memset(buf, 0, buflen);
+ isc_buffer_init(&target, buf, buflen);
+ result = isc_hex_totext((isc_region_t *)&source, 1, " ", &target);
+ assert_int_equal(result, ISC_R_SUCCESS);
+
+ return (buf);
+}
+
+isc_result_t
+dns_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) {
+ result = ISC_R_UNEXPECTEDEND;
+ break;
+ }
+ if (len > bufsiz * 2) {
+ result = ISC_R_NOSPACE;
+ break;
+ }
+ rp = s;
+ for (i = 0; i < len; i += 2) {
+ n = fromhex(*rp++);
+ n *= 16;
+ n += fromhex(*rp++);
+ *bp++ = n;
+ }
+ }
+
+ if (result == ISC_R_SUCCESS) {
+ *sizep = bp - buf;
+ }
+
+ isc_stdio_close(f);
+ return (result);
+}
+
+static void
+nullmsg(dns_rdatacallbacks_t *cb, const char *fmt, ...) {
+ UNUSED(cb);
+ UNUSED(fmt);
+}
+
+isc_result_t
+dns_test_rdatafromstring(dns_rdata_t *rdata, dns_rdataclass_t rdclass,
+ dns_rdatatype_t rdtype, unsigned char *dst,
+ size_t dstlen, const char *src, bool warnings) {
+ dns_rdatacallbacks_t callbacks;
+ isc_buffer_t source, target;
+ isc_lex_t *lex = NULL;
+ isc_lexspecials_t specials = { 0 };
+ isc_result_t result;
+ size_t length;
+
+ REQUIRE(rdata != NULL);
+ REQUIRE(DNS_RDATA_INITIALIZED(rdata));
+ REQUIRE(dst != NULL);
+ REQUIRE(src != NULL);
+
+ /*
+ * Set up source to hold the input string.
+ */
+ length = strlen(src);
+ isc_buffer_constinit(&source, src, length);
+ isc_buffer_add(&source, length);
+
+ /*
+ * Create a lexer as one is required by dns_rdata_fromtext().
+ */
+ result = isc_lex_create(mctx, 64, &lex);
+ if (result != ISC_R_SUCCESS) {
+ return (result);
+ }
+
+ /*
+ * Set characters which will be treated as valid multi-line RDATA
+ * delimiters while reading the source string. These should match
+ * specials from lib/dns/master.c.
+ */
+ specials[0] = 1;
+ specials['('] = 1;
+ specials[')'] = 1;
+ specials['"'] = 1;
+ isc_lex_setspecials(lex, specials);
+
+ /*
+ * Expect DNS masterfile comments.
+ */
+ isc_lex_setcomments(lex, ISC_LEXCOMMENT_DNSMASTERFILE);
+
+ /*
+ * Point lexer at source.
+ */
+ result = isc_lex_openbuffer(lex, &source);
+ if (result != ISC_R_SUCCESS) {
+ goto destroy_lexer;
+ }
+
+ /*
+ * Set up target for storing uncompressed wire form of provided RDATA.
+ */
+ isc_buffer_init(&target, dst, dstlen);
+
+ /*
+ * Set up callbacks so warnings and errors are not printed.
+ */
+ if (!warnings) {
+ dns_rdatacallbacks_init(&callbacks);
+ callbacks.warn = callbacks.error = nullmsg;
+ }
+
+ /*
+ * Parse input string, determining result.
+ */
+ result = dns_rdata_fromtext(rdata, rdclass, rdtype, lex, dns_rootname,
+ 0, mctx, &target, &callbacks);
+
+destroy_lexer:
+ isc_lex_destroy(&lex);
+
+ return (result);
+}
+
+void
+dns_test_namefromstring(const char *namestr, dns_fixedname_t *fname) {
+ size_t length;
+ isc_buffer_t *b = NULL;
+ isc_result_t result;
+ dns_name_t *name;
+
+ length = strlen(namestr);
+
+ name = dns_fixedname_initname(fname);
+
+ isc_buffer_allocate(mctx, &b, length);
+
+ isc_buffer_putmem(b, (const unsigned char *)namestr, length);
+ result = dns_name_fromtext(name, b, dns_rootname, 0, NULL);
+ assert_int_equal(result, ISC_R_SUCCESS);
+
+ isc_buffer_free(&b);
+}
+
+isc_result_t
+dns_test_difffromchanges(dns_diff_t *diff, const zonechange_t *changes,
+ bool warnings) {
+ isc_result_t result = ISC_R_SUCCESS;
+ unsigned char rdata_buf[1024];
+ dns_difftuple_t *tuple = NULL;
+ isc_consttextregion_t region;
+ dns_rdatatype_t rdatatype;
+ dns_fixedname_t fixedname;
+ dns_rdata_t rdata;
+ dns_name_t *name;
+ size_t i;
+
+ REQUIRE(diff != NULL);
+ REQUIRE(changes != NULL);
+
+ dns_diff_init(mctx, diff);
+
+ for (i = 0; changes[i].owner != NULL; i++) {
+ /*
+ * Parse owner name.
+ */
+ name = dns_fixedname_initname(&fixedname);
+ result = dns_name_fromstring(name, changes[i].owner, 0, mctx);
+ if (result != ISC_R_SUCCESS) {
+ break;
+ }
+
+ /*
+ * Parse RDATA type.
+ */
+ region.base = changes[i].type;
+ region.length = strlen(changes[i].type);
+ result = dns_rdatatype_fromtext(&rdatatype,
+ (isc_textregion_t *)&region);
+ if (result != ISC_R_SUCCESS) {
+ break;
+ }
+
+ /*
+ * Parse RDATA.
+ */
+ dns_rdata_init(&rdata);
+ result = dns_test_rdatafromstring(
+ &rdata, dns_rdataclass_in, rdatatype, rdata_buf,
+ sizeof(rdata_buf), changes[i].rdata, warnings);
+ if (result != ISC_R_SUCCESS) {
+ break;
+ }
+
+ /*
+ * Create a diff tuple for the parsed change and append it to
+ * the diff.
+ */
+ result = dns_difftuple_create(mctx, changes[i].op, name,
+ changes[i].ttl, &rdata, &tuple);
+ if (result != ISC_R_SUCCESS) {
+ break;
+ }
+ dns_diff_append(diff, &tuple);
+ }
+
+ if (result != ISC_R_SUCCESS) {
+ dns_diff_clear(diff);
+ }
+
+ return (result);
+}
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