Adding upstream version 1:9.16.44.upstream/1%9.16.44

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

1 files changed, 306 insertions, 0 deletions

diff --git a/lib/isc/result.c b/lib/isc/result.c
new file mode 100644
index 0000000..d083000
--- /dev/null
+++ b/lib/isc/result.c
@@ -0,0 +1,306 @@
+/*
+ * 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 <stddef.h>
+#include <stdlib.h>
+
+#include <isc/lib.h>
+#include <isc/once.h>
+#include <isc/resultclass.h>
+#include <isc/rwlock.h>
+#include <isc/util.h>
+
+typedef struct resulttable {
+	unsigned int base;
+	unsigned int last;
+	const char **text;
+	int set;
+	ISC_LINK(struct resulttable) link;
+} resulttable;
+
+typedef ISC_LIST(resulttable) resulttable_list_t;
+
+static const char *description[ISC_R_NRESULTS] = {
+	"success",			    /*%< 0 */
+	"out of memory",		    /*%< 1 */
+	"timed out",			    /*%< 2 */
+	"no available threads",		    /*%< 3 */
+	"address not available",	    /*%< 4 */
+	"address in use",		    /*%< 5 */
+	"permission denied",		    /*%< 6 */
+	"no pending connections",	    /*%< 7 */
+	"network unreachable",		    /*%< 8 */
+	"host unreachable",		    /*%< 9 */
+	"network down",			    /*%< 10 */
+	"host down",			    /*%< 11 */
+	"connection refused",		    /*%< 12 */
+	"not enough free resources",	    /*%< 13 */
+	"end of file",			    /*%< 14 */
+	"socket already bound",		    /*%< 15 */
+	"reload",			    /*%< 16 */
+	"lock busy",			    /*%< 17 */
+	"already exists",		    /*%< 18 */
+	"ran out of space",		    /*%< 19 */
+	"operation canceled",		    /*%< 20 */
+	"socket is not bound",		    /*%< 21 */
+	"shutting down",		    /*%< 22 */
+	"not found",			    /*%< 23 */
+	"unexpected end of input",	    /*%< 24 */
+	"failure",			    /*%< 25 */
+	"I/O error",			    /*%< 26 */
+	"not implemented",		    /*%< 27 */
+	"unbalanced parentheses",	    /*%< 28 */
+	"no more",			    /*%< 29 */
+	"invalid file",			    /*%< 30 */
+	"bad base64 encoding",		    /*%< 31 */
+	"unexpected token",		    /*%< 32 */
+	"quota reached",		    /*%< 33 */
+	"unexpected error",		    /*%< 34 */
+	"already running",		    /*%< 35 */
+	"ignore",			    /*%< 36 */
+	"address mask not contiguous",	    /*%< 37 */
+	"file not found",		    /*%< 38 */
+	"file already exists",		    /*%< 39 */
+	"socket is not connected",	    /*%< 40 */
+	"out of range",			    /*%< 41 */
+	"out of entropy",		    /*%< 42 */
+	"invalid use of multicast address", /*%< 43 */
+	"not a file",			    /*%< 44 */
+	"not a directory",		    /*%< 45 */
+	"queue is empty",		    /*%< 46 */
+	"address family mismatch",	    /*%< 47 */
+	"address family not supported",	    /*%< 48 */
+	"bad hex encoding",		    /*%< 49 */
+	"too many open files",		    /*%< 50 */
+	"not blocking",			    /*%< 51 */
+	"unbalanced quotes",		    /*%< 52 */
+	"operation in progress",	    /*%< 53 */
+	"connection reset",		    /*%< 54 */
+	"soft quota reached",		    /*%< 55 */
+	"not a valid number",		    /*%< 56 */
+	"disabled",			    /*%< 57 */
+	"max size",			    /*%< 58 */
+	"invalid address format",	    /*%< 59 */
+	"bad base32 encoding",		    /*%< 60 */
+	"unset",			    /*%< 61 */
+	"multiple",			    /*%< 62 */
+	"would block",			    /*%< 63 */
+	"complete",			    /*%< 64 */
+	"crypto failure",		    /*%< 65 */
+	"disc quota",			    /*%< 66 */
+	"disc full",			    /*%< 67 */
+	"default",			    /*%< 68 */
+	"IPv4 prefix",			    /*%< 69 */
+	"TLS error",			    /*%< 70 */
+	"ALPN for HTTP/2 failed"	    /*%< 71 */
+};
+
+static const char *identifier[ISC_R_NRESULTS] = { "ISC_R_SUCCESS",
+						  "ISC_R_NOMEMORY",
+						  "ISC_R_TIMEDOUT",
+						  "ISC_R_NOTHREADS",
+						  "ISC_R_ADDRNOTAVAIL",
+						  "ISC_R_ADDRINUSE",
+						  "ISC_R_NOPERM",
+						  "ISC_R_NOCONN",
+						  "ISC_R_NETUNREACH",
+						  "ISC_R_HOSTUNREACH",
+						  "ISC_R_NETDOWN",
+						  "ISC_R_HOSTDOWN",
+						  "ISC_R_CONNREFUSED",
+						  "ISC_R_NORESOURCES",
+						  "ISC_R_EOF",
+						  "ISC_R_BOUND",
+						  "ISC_R_RELOAD",
+						  "ISC_R_LOCKBUSY",
+						  "ISC_R_EXISTS",
+						  "ISC_R_NOSPACE",
+						  "ISC_R_CANCELED",
+						  "ISC_R_NOTBOUND",
+						  "ISC_R_SHUTTINGDOWN",
+						  "ISC_R_NOTFOUND",
+						  "ISC_R_UNEXPECTEDEND",
+						  "ISC_R_FAILURE",
+						  "ISC_R_IOERROR",
+						  "ISC_R_NOTIMPLEMENTED",
+						  "ISC_R_UNBALANCED",
+						  "ISC_R_NOMORE",
+						  "ISC_R_INVALIDFILE",
+						  "ISC_R_BADBASE64",
+						  "ISC_R_UNEXPECTEDTOKEN",
+						  "ISC_R_QUOTA",
+						  "ISC_R_UNEXPECTED",
+						  "ISC_R_ALREADYRUNNING",
+						  "ISC_R_IGNORE",
+						  "ISC_R_MASKNONCONTIG",
+						  "ISC_R_FILENOTFOUND",
+						  "ISC_R_FILEEXISTS",
+						  "ISC_R_NOTCONNECTED",
+						  "ISC_R_RANGE",
+						  "ISC_R_NOENTROPY",
+						  "ISC_R_MULTICAST",
+						  "ISC_R_NOTFILE",
+						  "ISC_R_NOTDIRECTORY",
+						  "ISC_R_EMPTY",
+						  "ISC_R_FAMILYMISMATCH",
+						  "ISC_R_FAMILYNOSUPPORT",
+						  "ISC_R_BADHEX",
+						  "ISC_R_TOOMANYOPENFILES",
+						  "ISC_R_NOTBLOCKING",
+						  "ISC_R_UNBALANCEDQUOTES",
+						  "ISC_R_INPROGRESS",
+						  "ISC_R_CONNECTIONRESET",
+						  "ISC_R_SOFTQUOTA",
+						  "ISC_R_BADNUMBER",
+						  "ISC_R_DISABLED",
+						  "ISC_R_MAXSIZE",
+						  "ISC_R_BADADDRESSFORM",
+						  "ISC_R_BADBASE32",
+						  "ISC_R_UNSET",
+						  "ISC_R_MULTIPLE",
+						  "ISC_R_WOULDBLOCK",
+						  "ISC_R_COMPLETE",
+						  "ISC_R_CRYPTOFAILURE",
+						  "ISC_R_DISCQUOTA",
+						  "ISC_R_DISCFULL",
+						  "ISC_R_DEFAULT",
+						  "ISC_R_IPV4PREFIX",
+						  "ISC_R_TLSERROR",
+						  "ISC_R_HTTP2ALPNERROR" };
+
+#define ISC_RESULT_RESULTSET	  2
+#define ISC_RESULT_UNAVAILABLESET 3
+
+static isc_once_t once = ISC_ONCE_INIT;
+static resulttable_list_t description_tables;
+static resulttable_list_t identifier_tables;
+static isc_rwlock_t lock;
+
+static isc_result_t
+register_table(resulttable_list_t *tables, unsigned int base,
+	       unsigned int nresults, const char **text, int set) {
+	resulttable *table;
+
+	REQUIRE(base % ISC_RESULTCLASS_SIZE == 0);
+	REQUIRE(nresults <= ISC_RESULTCLASS_SIZE);
+	REQUIRE(text != NULL);
+
+	/*
+	 * We use malloc() here because we we want to be able to use
+	 * isc_result_totext() even if there is no memory context.
+	 */
+	table = malloc(sizeof(*table));
+	if (table == NULL) {
+		return (ISC_R_NOMEMORY);
+	}
+	table->base = base;
+	table->last = base + nresults - 1;
+	table->text = text;
+	table->set = set;
+	ISC_LINK_INIT(table, link);
+
+	RWLOCK(&lock, isc_rwlocktype_write);
+
+	ISC_LIST_APPEND(*tables, table, link);
+
+	RWUNLOCK(&lock, isc_rwlocktype_write);
+
+	return (ISC_R_SUCCESS);
+}
+
+static void
+initialize_action(void) {
+	isc_result_t result;
+
+	isc_rwlock_init(&lock, 0, 0);
+	ISC_LIST_INIT(description_tables);
+	ISC_LIST_INIT(identifier_tables);
+
+	result = register_table(&description_tables, ISC_RESULTCLASS_ISC,
+				ISC_R_NRESULTS, description,
+				ISC_RESULT_RESULTSET);
+	if (result != ISC_R_SUCCESS) {
+		UNEXPECTED_ERROR(__FILE__, __LINE__,
+				 "register_table() failed: %u", result);
+	}
+
+	result = register_table(&identifier_tables, ISC_RESULTCLASS_ISC,
+				ISC_R_NRESULTS, identifier,
+				ISC_RESULT_RESULTSET);
+	if (result != ISC_R_SUCCESS) {
+		UNEXPECTED_ERROR(__FILE__, __LINE__,
+				 "register_table() failed: %u", result);
+	}
+}
+
+static void
+initialize(void) {
+	RUNTIME_CHECK(isc_once_do(&once, initialize_action) == ISC_R_SUCCESS);
+}
+
+static const char *
+isc_result_tomany_helper(resulttable_list_t *tables, isc_result_t result) {
+	resulttable *table;
+	const char *text;
+	int index;
+
+	initialize();
+
+	RWLOCK(&lock, isc_rwlocktype_read);
+
+	text = NULL;
+	for (table = ISC_LIST_HEAD(*tables); table != NULL;
+	     table = ISC_LIST_NEXT(table, link))
+	{
+		if (result >= table->base && result <= table->last) {
+			index = (int)(result - table->base);
+			text = table->text[index];
+			break;
+		}
+	}
+	if (text == NULL) {
+		text = "(result code text not available)";
+	}
+
+	RWUNLOCK(&lock, isc_rwlocktype_read);
+
+	return (text);
+}
+
+const char *
+isc_result_totext(isc_result_t result) {
+	return (isc_result_tomany_helper(&description_tables, result));
+}
+
+const char *
+isc_result_toid(isc_result_t result) {
+	return (isc_result_tomany_helper(&identifier_tables, result));
+}
+
+isc_result_t
+isc_result_register(unsigned int base, unsigned int nresults, const char **text,
+		    int set) {
+	initialize();
+
+	return (register_table(&description_tables, base, nresults, text, set));
+}
+
+isc_result_t
+isc_result_registerids(unsigned int base, unsigned int nresults,
+		       const char **ids, int set) {
+	initialize();
+
+	return (register_table(&identifier_tables, base, nresults, ids, set));
+}