Adding upstream version 1:9.18.19.upstream/1%9.18.19upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 353 insertions, 0 deletions

diff --git a/bin/tests/wire_test.c b/bin/tests/wire_test.c
new file mode 100644
index 0000000..5b079ce
--- /dev/null
+++ b/bin/tests/wire_test.c
@@ -0,0 +1,353 @@
+/*
+ * 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.
+ */
+
+#include <inttypes.h>
+#include <stdbool.h>
+#include <stdlib.h>
+
+#include <isc/buffer.h>
+#include <isc/commandline.h>
+#include <isc/file.h>
+#include <isc/mem.h>
+#include <isc/print.h>
+#include <isc/result.h>
+#include <isc/string.h>
+#include <isc/util.h>
+
+#include <dns/message.h>
+
+int parseflags = 0;
+isc_mem_t *mctx = NULL;
+bool printmemstats = false;
+bool dorender = false;
+
+static void
+process_message(isc_buffer_t *source);
+
+static isc_result_t
+printmessage(dns_message_t *msg);
+
+static void
+CHECKRESULT(isc_result_t result, const char *msg) {
+	if (result != ISC_R_SUCCESS) {
+		printf("%s: %s\n", msg, isc_result_totext(result));
+
+		exit(1);
+	}
+}
+
+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);
+	}
+
+	fprintf(stderr, "bad input format: %02x\n", c);
+	exit(3);
+}
+
+static void
+usage(void) {
+	fprintf(stderr, "wire_test [-b] [-d] [-p] [-r] [-s]\n");
+	fprintf(stderr, "          [-m {usage|trace|record|size|mctx}]\n");
+	fprintf(stderr, "          [filename]\n\n");
+	fprintf(stderr, "\t-b\tBest-effort parsing (ignore some errors)\n");
+	fprintf(stderr, "\t-d\tRead input as raw binary data\n");
+	fprintf(stderr, "\t-p\tPreserve order of the records in messages\n");
+	fprintf(stderr, "\t-r\tAfter parsing, re-render the message\n");
+	fprintf(stderr, "\t-s\tPrint memory statistics\n");
+	fprintf(stderr, "\t-t\tTCP mode - ignore the first 2 bytes\n");
+}
+
+static isc_result_t
+printmessage(dns_message_t *msg) {
+	isc_buffer_t b;
+	char *buf = NULL;
+	int len = 1024;
+	isc_result_t result = ISC_R_SUCCESS;
+
+	do {
+		buf = isc_mem_get(mctx, len);
+
+		isc_buffer_init(&b, buf, len);
+		result = dns_message_totext(msg, &dns_master_style_debug, 0,
+					    &b);
+		if (result == ISC_R_NOSPACE) {
+			isc_mem_put(mctx, buf, len);
+			len *= 2;
+		} else if (result == ISC_R_SUCCESS) {
+			printf("%.*s\n", (int)isc_buffer_usedlength(&b), buf);
+		}
+	} while (result == ISC_R_NOSPACE);
+
+	if (buf != NULL) {
+		isc_mem_put(mctx, buf, len);
+	}
+
+	return (result);
+}
+
+int
+main(int argc, char *argv[]) {
+	isc_buffer_t *input = NULL;
+	bool need_close = false;
+	bool tcp = false;
+	bool rawdata = false;
+	isc_result_t result;
+	uint8_t c;
+	FILE *f;
+	int ch;
+
+#define CMDLINE_FLAGS "bdm:prst"
+	/*
+	 * Process memory debugging argument first.
+	 */
+	while ((ch = isc_commandline_parse(argc, argv, CMDLINE_FLAGS)) != -1) {
+		switch (ch) {
+		case 'm':
+			if (strcasecmp(isc_commandline_argument, "record") == 0)
+			{
+				isc_mem_debugging |= ISC_MEM_DEBUGRECORD;
+			}
+			if (strcasecmp(isc_commandline_argument, "trace") == 0)
+			{
+				isc_mem_debugging |= ISC_MEM_DEBUGTRACE;
+			}
+			if (strcasecmp(isc_commandline_argument, "usage") == 0)
+			{
+				isc_mem_debugging |= ISC_MEM_DEBUGUSAGE;
+			}
+			break;
+		default:
+			break;
+		}
+	}
+	isc_commandline_reset = true;
+
+	isc_mem_create(&mctx);
+
+	while ((ch = isc_commandline_parse(argc, argv, CMDLINE_FLAGS)) != -1) {
+		switch (ch) {
+		case 'b':
+			parseflags |= DNS_MESSAGEPARSE_BESTEFFORT;
+			break;
+		case 'd':
+			rawdata = true;
+			break;
+		case 'm':
+			break;
+		case 'p':
+			parseflags |= DNS_MESSAGEPARSE_PRESERVEORDER;
+			break;
+		case 'r':
+			dorender = true;
+			break;
+		case 's':
+			printmemstats = true;
+			break;
+		case 't':
+			tcp = true;
+			break;
+		default:
+			usage();
+			exit(1);
+		}
+	}
+
+	argc -= isc_commandline_index;
+	argv += isc_commandline_index;
+
+	if (argc >= 1) {
+		f = fopen(argv[0], "r");
+		if (f == NULL) {
+			fprintf(stderr, "%s: fopen failed\n", argv[0]);
+			exit(1);
+		}
+		need_close = true;
+	} else {
+		f = stdin;
+	}
+
+	isc_buffer_allocate(mctx, &input, 64 * 1024);
+
+	if (rawdata) {
+		while (fread(&c, 1, 1, f) != 0) {
+			result = isc_buffer_reserve(&input, 1);
+			RUNTIME_CHECK(result == ISC_R_SUCCESS);
+			isc_buffer_putuint8(input, (uint8_t)c);
+		}
+	} else {
+		char s[BUFSIZ];
+
+		while (fgets(s, sizeof(s), f) != NULL) {
+			char *rp = s, *wp = s;
+			size_t i, 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) {
+				fprintf(stderr, "bad input format: %lu\n",
+					(unsigned long)len);
+				exit(1);
+			}
+
+			rp = s;
+			for (i = 0; i < len; i += 2) {
+				c = fromhex(*rp++);
+				c *= 16;
+				c += fromhex(*rp++);
+				result = isc_buffer_reserve(&input, 1);
+				RUNTIME_CHECK(result == ISC_R_SUCCESS);
+				isc_buffer_putuint8(input, (uint8_t)c);
+			}
+		}
+	}
+
+	if (need_close) {
+		fclose(f);
+	}
+
+	if (tcp) {
+		while (isc_buffer_remaininglength(input) != 0) {
+			unsigned int tcplen;
+
+			if (isc_buffer_remaininglength(input) < 2) {
+				fprintf(stderr, "premature end of packet\n");
+				exit(1);
+			}
+			tcplen = isc_buffer_getuint16(input);
+
+			if (isc_buffer_remaininglength(input) < tcplen) {
+				fprintf(stderr, "premature end of packet\n");
+				exit(1);
+			}
+			process_message(input);
+		}
+	} else {
+		process_message(input);
+	}
+
+	isc_buffer_free(&input);
+
+	if (printmemstats) {
+		isc_mem_stats(mctx, stdout);
+	}
+	isc_mem_destroy(&mctx);
+
+	return (0);
+}
+
+static void
+process_message(isc_buffer_t *source) {
+	dns_message_t *message;
+	isc_result_t result;
+	int i;
+
+	message = NULL;
+	dns_message_create(mctx, DNS_MESSAGE_INTENTPARSE, &message);
+
+	result = dns_message_parse(message, source, parseflags);
+	if (result == DNS_R_RECOVERABLE) {
+		result = ISC_R_SUCCESS;
+	}
+	CHECKRESULT(result, "dns_message_parse failed");
+
+	result = printmessage(message);
+	CHECKRESULT(result, "printmessage() failed");
+
+	if (printmemstats) {
+		isc_mem_stats(mctx, stdout);
+	}
+
+	if (dorender) {
+		unsigned char b2[64 * 1024];
+		isc_buffer_t buffer;
+		dns_compress_t cctx;
+
+		isc_buffer_init(&buffer, b2, sizeof(b2));
+
+		/*
+		 * XXXMLG
+		 * Changing this here is a hack, and should not be done in
+		 * reasonable application code, ever.
+		 */
+		message->from_to_wire = DNS_MESSAGE_INTENTRENDER;
+
+		for (i = 0; i < DNS_SECTION_MAX; i++) {
+			message->counts[i] = 0; /* Another hack XXX */
+		}
+
+		result = dns_compress_init(&cctx, -1, mctx);
+		CHECKRESULT(result, "dns_compress_init() failed");
+
+		result = dns_message_renderbegin(message, &cctx, &buffer);
+		CHECKRESULT(result, "dns_message_renderbegin() failed");
+
+		result = dns_message_rendersection(message,
+						   DNS_SECTION_QUESTION, 0);
+		CHECKRESULT(result, "dns_message_rendersection(QUESTION) "
+				    "failed");
+
+		result = dns_message_rendersection(message, DNS_SECTION_ANSWER,
+						   0);
+		CHECKRESULT(result, "dns_message_rendersection(ANSWER) failed");
+
+		result = dns_message_rendersection(message,
+						   DNS_SECTION_AUTHORITY, 0);
+		CHECKRESULT(result, "dns_message_rendersection(AUTHORITY) "
+				    "failed");
+
+		result = dns_message_rendersection(message,
+						   DNS_SECTION_ADDITIONAL, 0);
+		CHECKRESULT(result, "dns_message_rendersection(ADDITIONAL) "
+				    "failed");
+
+		dns_message_renderend(message);
+
+		dns_compress_invalidate(&cctx);
+
+		message->from_to_wire = DNS_MESSAGE_INTENTPARSE;
+		dns_message_detach(&message);
+
+		printf("Message rendered.\n");
+		if (printmemstats) {
+			isc_mem_stats(mctx, stdout);
+		}
+
+		dns_message_create(mctx, DNS_MESSAGE_INTENTPARSE, &message);
+
+		result = dns_message_parse(message, &buffer, parseflags);
+		CHECKRESULT(result, "dns_message_parse failed");
+
+		result = printmessage(message);
+		CHECKRESULT(result, "printmessage() failed");
+	}
+	dns_message_detach(&message);
+}