From 45d6379135504814ab723b57f0eb8be23393a51d Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 27 Apr 2024 09:24:22 +0200 Subject: Adding upstream version 1:9.16.44. Signed-off-by: Daniel Baumann --- lib/irs/gai_strerror.c | 96 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 96 insertions(+) create mode 100644 lib/irs/gai_strerror.c (limited to 'lib/irs/gai_strerror.c') diff --git a/lib/irs/gai_strerror.c b/lib/irs/gai_strerror.c new file mode 100644 index 0000000..a2b989f --- /dev/null +++ b/lib/irs/gai_strerror.c @@ -0,0 +1,96 @@ +/* + * 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 gai_strerror.c + * gai_strerror() returns an error message corresponding to an + * error code returned by getaddrinfo() and getnameinfo(). The following error + * codes and their meaning are defined in + * \link netdb.h include/irs/netdb.h.\endlink + * This implementation is almost an exact copy of lwres/gai_sterror.c except + * that it catches up the latest API standard, RFC3493. + * + * \li #EAI_ADDRFAMILY address family for hostname not supported + * \li #EAI_AGAIN temporary failure in name resolution + * \li #EAI_BADFLAGS invalid value for ai_flags + * \li #EAI_FAIL non-recoverable failure in name resolution + * \li #EAI_FAMILY ai_family not supported + * \li #EAI_MEMORY memory allocation failure + * \li #EAI_NODATA no address associated with hostname (obsoleted in RFC3493) + * \li #EAI_NONAME hostname nor servname provided, or not known + * \li #EAI_SERVICE servname not supported for ai_socktype + * \li #EAI_SOCKTYPE ai_socktype not supported + * \li #EAI_SYSTEM system error returned in errno + * \li #EAI_BADHINTS Invalid value for hints (non-standard) + * \li #EAI_PROTOCOL Resolved protocol is unknown (non-standard) + * \li #EAI_OVERFLOW Argument buffer overflow + * \li #EAI_INSECUREDATA Insecure Data (experimental) + * + * The message invalid error code is returned if ecode is out of range. + * + * ai_flags, ai_family and ai_socktype are elements of the struct + * addrinfo used by lwres_getaddrinfo(). + * + * \section gai_strerror_see See Also + * + * strerror(), getaddrinfo(), getnameinfo(), RFC3493. + */ + +#include + +#include + +/*% Text of error messages. */ +static const char *gai_messages[] = { "no error", + "address family for hostname not " + "supported", + "temporary failure in name resolution", + "invalid value for ai_flags", + "non-recoverable failure in name " + "resolution", + "ai_family not supported", + "memory allocation failure", + "no address associated with hostname", + "hostname nor servname provided, or not " + "known", + "servname not supported for ai_socktype", + "ai_socktype not supported", + "system error returned in errno", + "bad hints", + "bad protocol", + "argument buffer overflow", + "insecure data provided" }; + +/*% + * Returns an error message corresponding to an error code returned by + * getaddrinfo() and getnameinfo() + */ +#if defined _WIN32 +char * +#else /* if defined _WIN32 */ +const char * +#endif /* if defined _WIN32 */ +gai_strerror(int ecode) { + union { + const char *const_ptr; + char *deconst_ptr; + } ptr; + + if ((ecode < 0) || + (ecode >= (int)(sizeof(gai_messages) / sizeof(*gai_messages)))) + { + ptr.const_ptr = "invalid error code"; + } else { + ptr.const_ptr = gai_messages[ecode]; + } + return (ptr.deconst_ptr); +} -- cgit v1.2.3