| 1 | /* $Id: netaddrstr.cpp 98103 2023-01-17 14:15:46Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - Network Address String Handling.
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| 4 | *
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| 5 | * @remarks Don't add new functionality to this file, it goes into netaddrstr2.cpp
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| 6 | * or some other suitable file (legal reasons + code not up to oracle
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| 7 | * quality standards and requires rewrite from scratch).
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| 8 | */
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| 9 |
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| 10 | /*
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| 11 | * Contributed by Oliver Loch.
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| 12 | *
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| 13 | * Copyright (C) 2012-2023 Oracle and/or its affiliates.
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| 14 | *
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| 15 | * This file is part of VirtualBox base platform packages, as
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| 16 | * available from https://www.virtualbox.org.
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| 17 | *
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| 18 | * This program is free software; you can redistribute it and/or
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| 19 | * modify it under the terms of the GNU General Public License
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| 20 | * as published by the Free Software Foundation, in version 3 of the
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| 21 | * License.
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| 22 | *
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| 23 | * This program is distributed in the hope that it will be useful, but
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| 24 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 25 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 26 | * General Public License for more details.
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| 27 | *
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| 28 | * You should have received a copy of the GNU General Public License
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| 29 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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| 30 | *
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| 31 | * The contents of this file may alternatively be used under the terms
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| 32 | * of the Common Development and Distribution License Version 1.0
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| 33 | * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
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| 34 | * in the VirtualBox distribution, in which case the provisions of the
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| 35 | * CDDL are applicable instead of those of the GPL.
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| 36 | *
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| 37 | * You may elect to license modified versions of this file under the
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| 38 | * terms and conditions of either the GPL or the CDDL or both.
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| 39 | *
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| 40 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
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| 41 | */
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| 42 |
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| 43 |
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| 44 | /*********************************************************************************************************************************
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| 45 | * Header Files *
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| 46 | *********************************************************************************************************************************/
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| 47 | #include "internal/iprt.h"
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| 48 | #include <iprt/net.h>
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| 49 |
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| 50 | #include <iprt/mem.h>
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| 51 | #include <iprt/string.h>
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| 52 | #include <iprt/stream.h>
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| 53 | #include "internal/string.h"
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| 54 |
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| 55 |
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| 56 | /** @page pg_rtnetipv6_addr IPv6 Address Format
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| 57 | *
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| 58 | * IPv6 Addresses, their representation in text and other problems.
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| 59 | *
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| 60 | * The following is based on:
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| 61 | *
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| 62 | * - http://tools.ietf.org/html/rfc4291
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| 63 | * - http://tools.ietf.org/html/rfc5952
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| 64 | * - http://tools.ietf.org/html/rfc6052
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| 65 | *
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| 66 | *
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| 67 | * Before you start using those functions, you should have an idea of
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| 68 | * what you're dealing with, before you come and blame the functions...
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| 69 | *
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| 70 | * First of all, the address itself:
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| 71 | *
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| 72 | * An address is written like this: (READ THIS FINE MANUAL!)
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| 73 | *
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| 74 | * - 2001:db8:abc:def::1
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| 75 | *
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| 76 | * The characters between two colons are called a "hextet".
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| 77 | * Each hextet consists of four characters and each IPv6 address
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| 78 | * consists of a maximum of eight hextets. So a full blown address
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| 79 | * would look like this:
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| 80 | *
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| 81 | * - 1111:2222:3333:4444:5555:6666:7777:8888
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| 82 | *
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| 83 | * The allowed characters are "0123456789abcdef". They have to be
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| 84 | * lower case. Upper case is not allowed.
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| 85 | *
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| 86 | * *** Gaps and adress shortening
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| 87 | *
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| 88 | * If an address contains hextets that contain only "0"s, they
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| 89 | * can be shortened, like this:
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| 90 | *
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| 91 | * - 1111:2222:0000:0000:0000:0000:7777:8888 -> 1111:2222::7777:8888
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| 92 | *
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| 93 | * The double colon represents the hextets that have been shortened "::".
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| 94 | * The "::" will be called "gap" from now on.
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| 95 | *
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| 96 | * When shortening an address, there are some special rules that need to be applied:
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| 97 | *
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| 98 | * - Shorten always the longest group of hextets.
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| 99 | *
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| 100 | * Let's say, you have this address: 2001:db8:0:0:0:1:0:0 then it has to be
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| 101 | * shortened to "2001:db8::1:0:0". Shortening to "2001:db8:0:0:0:1::" would
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| 102 | * return an error.
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| 103 | *
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| 104 | * - Two or more gaps the same size.
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| 105 | *
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| 106 | * Let's say you have this address: 2001:db8:0:0:1:0:0:1. As you can see, there
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| 107 | * are two gaps, both the size of two hextets. If you shorten the last two hextets,
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| 108 | * you end up in pain, as the RFC forbids this, so the correct address is:
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| 109 | * "2001:db8::1:0:0:1"
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| 110 | *
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| 111 | * It's important to note that an address can only be shortened ONE TIME!
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| 112 | * This is invalid: "2001:db8::1::1"
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| 113 | *
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| 114 | * *** The scope.
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| 115 | *
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| 116 | * Each address has a so called "scope" it is added to the end of the address,
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| 117 | * separated by a percent sign "%". If there is no scope at the end, it defaults
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| 118 | * to "0".
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| 119 | *
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| 120 | * So "2001:db8::1" is the same as "2001:db8::1%0".
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| 121 | *
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| 122 | * As in IPv6 all network interfaces can/should have the same address, the scope
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| 123 | * gives you the ability to choose on which interface the system should listen.
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| 124 | *
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| 125 | * AFAIK, the scope can be used with unicast as well as link local addresses, but
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| 126 | * it is mandatory with link local addresses (starting with fe80::).
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| 127 | *
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| 128 | * On Linux the default scope is the interface's name. On Windows it's just the index
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| 129 | * of the interface. Run "route print -6" in the shell, to see the interface's index
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| 130 | * on Winodows.
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| 131 | *
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| 132 | * All functions can deal with the scope, and DO NOT warn if you put garbage there.
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| 133 | *
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| 134 | * *** Port added to the IPv6 address
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| 135 | *
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| 136 | * There is only one way to add a port to an IPv6 address is to embed it in brackets:
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| 137 | *
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| 138 | * [2001:db8::1]:12345
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| 139 | *
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| 140 | * This gives you the address "2001:db8::1" and the port "12345".
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| 141 | *
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| 142 | * What also works, but is not recommended by rfc is to separate the port
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| 143 | * by a dot:
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| 144 | *
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| 145 | * 2001:db8::1.12345
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| 146 | *
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| 147 | * It even works with embedded IPv4 addresses.
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| 148 | *
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| 149 | * *** Special addresses and how they are written
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| 150 | *
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| 151 | * The following are notations to represent "special addresses".
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| 152 | *
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| 153 | * "::" IN6ADDR_ANY
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| 154 | * ":::123" IN6ADDR_ANY with port "123"
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| 155 | * "[::]:123" IN6ADDR_ANY with port "123"
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| 156 | * "[:::123]" -> NO. Not allowed and makes no sense
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| 157 | * "::1" -> address of the loopback device (127.0.0.1 in v4)
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| 158 | *
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| 159 | * On systems with dual sockets, one can use so called embedded IPv4 addresses:
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| 160 | *
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| 161 | * "::ffff:192.168.1.1" results in the IPv6 address "::ffff:c0a8:0101" as two octets
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| 162 | * of the IPv4 address will be converted to one hextet in the IPv6 address.
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| 163 | *
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| 164 | * The prefix of such addresses MUST BE "::ffff:", 10 bytes as zero and two bytes as 255.
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| 165 | *
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| 166 | * The so called IPv4-compatible IPv6 addresses are deprecated and no longer in use.
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| 167 | *
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| 168 | * *** Valid addresses and string
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| 169 | *
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| 170 | * If you use any of the IPv6 address functions, keep in mind, that those addresses
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| 171 | * are all returning "valid" even if the underlying system (e.g. VNC) doesn't like
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| 172 | * such strings.
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| 173 | *
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| 174 | * [2001:db8::1]
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| 175 | * [2001:db8::1]:12345
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| 176 | *
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| 177 | * and so on. So to make sure you only pass the underlying software a pure IPv6 address
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| 178 | * without any garbage, you should use the "outAddress" parameters to get a RFC compliant
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| 179 | * address returned.
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| 180 | *
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| 181 | * So after reading the above, you'll start using the functions and see a bool called
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| 182 | * "followRfc" which is true by default. This is what this bool does:
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| 183 | *
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| 184 | * The following addresses all represent the exact same address:
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| 185 | *
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| 186 | * 1 - 2001:db8::1
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| 187 | * 2 - 2001:db8:0::1
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| 188 | * 3 - 2001:0db8:0000:0000:0000:0000:0000:0001
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| 189 | * 4 - 2001:DB8::1
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| 190 | * 5 - [2001:db8::1]
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| 191 | * 6 - [2001:db8:0::1]
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| 192 | *
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| 193 | * According to RFC 5952, number two, three, four and six are invalid.
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| 194 | *
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| 195 | * #2 - because there is a single hextet that hasn't been shortened
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| 196 | *
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| 197 | * #3 - because there has nothing been shortened (hextets 3 to 7) and
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| 198 | * there are leading zeros in at least one hextet ("0db8")
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| 199 | *
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| 200 | * #4 - all characters in an IPv6 address have to be lower case
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| 201 | *
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| 202 | * #6 - same as two but included in brackets
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| 203 | *
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| 204 | * If you follow RFC, the above addresses are not converted and an
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| 205 | * error is returned. If you turn RFC off, you will get the expected
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| 206 | * representation of the address.
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| 207 | *
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| 208 | * It's a nice way to convert "weird" addresses to rfc compliant addresses
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| 209 | *
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| 210 | */
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| 211 |
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| 212 |
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| 213 | /**
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| 214 | * Parses any string and tests if it is an IPv6 Address
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| 215 | *
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| 216 | * This function should NOT be used directly. If you do, note
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| 217 | * that no security checks are done at the moment. This can change.
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| 218 | *
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| 219 | * @returns iprt sstatus code, yeah, right... This function most certainly DOES
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| 220 | * NOT RETURN ANY IPRT STATUS CODES. It's also a unreadable mess.
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| 221 | * @param pszAddress The strin that holds the IPv6 address
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| 222 | * @param addressLength The length of pszAddress
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| 223 | * @param pszAddressOut Returns a plain, full blown IPv6 address
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| 224 | * as a char array
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| 225 | * @param addressOutSize The size of pszAddressOut (length)
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| 226 | * @param pPortOut 32 bit unsigned integer, holding the port
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| 227 | * If pszAddress doesn't contain a port, it's 0
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| 228 | * @param pszScopeOut Returns the scope of the address, if none it's 0
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| 229 | * @param scopeOutSize sizeof(pszScopeOut)
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| 230 | * @param pBrackets returns true if the address was enclosed in brackets
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| 231 | * @param pEmbeddedV4 returns true if the address is an embedded IPv4 address
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| 232 | * @param followRfc if set to true, the function follows RFC (default)
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| 233 | */
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| 234 | static int rtStrParseAddrStr6(const char *pszAddress, size_t addressLength, char *pszAddressOut, size_t addressOutSize, uint32_t *pPortOut, char *pszIfIdOut, size_t ifIdOutSize, bool *pBrackets, bool *pEmbeddedV4, bool followRfc)
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| 235 | {
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| 236 | /************************\
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| 237 | * Pointer Hell Ahead *
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| 238 | \************************/
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| 239 |
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| 240 | const char szIpV6AddressChars[] = "ABCDEF01234567890abcdef.:[]%"; // order IMPORTANT
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| 241 | const char szIpV4AddressChars[] = "01234567890.:[]"; // order IMPORTANT
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| 242 | const char szLinkLocalPrefix[] = "FfEe8800"; //
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| 243 | const char *pszIpV6AddressChars = NULL, *pszIpV4AddressChars = NULL, *pszLinkLocalPrefix = NULL;
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| 244 |
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| 245 | char *pszSourceAddress = NULL, *pszSourceAddressStart = NULL;
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| 246 | char *pszResultAddress = NULL, *pszResultAddressStart = NULL;
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| 247 | char *pszResultAddress4 = NULL, *pszResultAddress4Start = NULL;
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| 248 | char *pszResultPort = NULL, *pszResultPortStart = NULL;
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| 249 | char *pszInternalAddress = NULL, *pszInternalAddressStart = NULL;
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| 250 | char *pszInternalPort = NULL, *pszInternalPortStart = NULL;
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| 251 |
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| 252 | char *pStart = NULL, *pNow = NULL, *pNext = NULL, *pNowChar = NULL, *pIfId = NULL, *pIfIdEnd = NULL;
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| 253 | char *pNowDigit = NULL, *pFrom = NULL, *pTo = NULL, *pLast = NULL;
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| 254 | char *pGap = NULL, *pMisc = NULL, *pDotStart = NULL, *pFieldStart = NULL, *pFieldEnd = NULL;
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| 255 | char *pFieldStartLongest = NULL, *pBracketOpen = NULL, *pBracketClose = NULL;
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| 256 | char *pszRc = NULL;
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| 257 |
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| 258 | bool isLinkLocal = false;
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| 259 | char szDummy[4];
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| 260 |
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| 261 | uint8_t *pByte = NULL;
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| 262 | uint32_t byteOut = 0;
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| 263 | uint16_t returnValue = 0;
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| 264 | uint32_t colons = 0;
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| 265 | uint32_t colonsOverAll = 0;
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| 266 | uint32_t fieldLength = 0;
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| 267 | uint32_t dots = 0;
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| 268 | size_t gapSize = 0;
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| 269 | uint32_t intPortOut = 0;
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| 270 |
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| 271 | pszIpV4AddressChars = &szIpV4AddressChars[0];
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| 272 | pszIpV6AddressChars = &szIpV6AddressChars[6];
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| 273 | pszLinkLocalPrefix = &szLinkLocalPrefix[6];
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| 274 |
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| 275 | if (!followRfc)
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| 276 | pszIpV6AddressChars = &szIpV6AddressChars[0];
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| 277 |
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| 278 | if (addressLength<2)
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| 279 | returnValue = 711;
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| 280 |
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| 281 | pszResultAddressStart = (char *)RTMemTmpAlloc(34);
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| 282 | pszInternalAddressStart = (char *)RTMemTmpAlloc(34);
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| 283 | pszInternalPortStart = (char * )RTMemTmpAlloc(10);
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| 284 |
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| 285 | if (! (pszResultAddressStart && pszInternalAddressStart && pszInternalPortStart))
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| 286 | {
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| 287 | if (pszResultAddressStart)
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| 288 | RTMemTmpFree(pszResultAddressStart);
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| 289 |
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| 290 | if (pszInternalAddressStart)
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| 291 | RTMemTmpFree(pszInternalAddressStart);
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| 292 |
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| 293 | if (pszInternalPortStart)
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| 294 | RTMemTmpFree(pszInternalPortStart);
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| 295 |
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| 296 | return -701;
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| 297 | }
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| 298 |
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| 299 | memset(szDummy, '\0', 4);
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| 300 |
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| 301 | pszResultAddress = pszResultAddressStart;
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| 302 | memset(pszResultAddressStart, '\0', 34);
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| 303 |
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| 304 | pszInternalAddress = pszInternalAddressStart;
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| 305 | memset(pszInternalAddressStart, '\0' , 34);
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| 306 |
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| 307 | pszInternalPort = pszInternalPortStart;
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| 308 | memset(pszInternalPortStart, '\0', 10);
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| 309 |
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| 310 | pszSourceAddress = pszSourceAddressStart = (char *)pszAddress;
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| 311 |
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| 312 | pFrom = pTo = pStart = pLast = pszSourceAddressStart;
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| 313 |
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| 314 | while (*pszSourceAddress != '\0' && !returnValue)
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| 315 | {
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| 316 | pNow = NULL;
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| 317 | pNext = NULL;
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| 318 | pNowChar = NULL;
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| 319 | pNowDigit = NULL;
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| 320 |
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| 321 | pNow = pszSourceAddress;
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| 322 | pNext = pszSourceAddress + 1;
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| 323 |
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| 324 | if (!pFrom)
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| 325 | pFrom = pTo = pNow;
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| 326 |
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| 327 | pNowChar = (char *)memchr(pszIpV6AddressChars, *pNow, strlen(pszIpV6AddressChars));
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| 328 | pNowDigit = (char *)memchr(pszIpV6AddressChars, *pNow, strlen(pszIpV6AddressChars) - 5);
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| 329 |
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| 330 | if (pszResultPort)
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| 331 | {
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| 332 | if (pLast && (pszResultPort == pszSourceAddressStart))
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| 333 | {
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| 334 | if (*pLast == '\0')
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| 335 | returnValue = 721;
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| 336 |
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| 337 | pszResultPortStart = (char *)RTMemTmpAlloc(10);
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| 338 |
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| 339 | if (!pszResultPortStart)
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| 340 | returnValue = 702;
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| 341 |
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| 342 | memset(pszResultPortStart, '\0', 10);
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| 343 | pszResultPort = pszResultPortStart;
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| 344 | pszSourceAddress = pLast;
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| 345 | pMisc = pLast;
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| 346 | pLast = NULL;
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| 347 | continue;
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| 348 | }
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| 349 |
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| 350 | pNowDigit = NULL;
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| 351 | pNowDigit = (char *)memchr(pszIpV4AddressChars, *pNow, strlen(pszIpV4AddressChars) - 4);
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| 352 |
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| 353 | if (strlen(pszResultPortStart) == 5)
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| 354 | returnValue = 11;
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| 355 |
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| 356 | if (*pNow == '0' && pszResultPort == pszResultPortStart && *pNext != '\0' && (pNow - pMisc) < 5 )
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| 357 | {
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| 358 | pszSourceAddress++;
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| 359 | continue;
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| 360 | }
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| 361 |
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| 362 | if (pNowDigit)
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| 363 | {
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| 364 | *pszResultPort = *pNowDigit;
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| 365 | pszResultPort++;
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| 366 | pszSourceAddress++;
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| 367 | continue;
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| 368 | }
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| 369 | else
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| 370 | returnValue = 12;
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| 371 | }
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| 372 |
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| 373 | if (pszResultAddress4)
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| 374 | {
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| 375 | if (pszResultAddress4 == pszSourceAddressStart && pLast)
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| 376 | {
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| 377 | dots = 0;
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| 378 | pszResultAddress4 = NULL;
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| 379 | pszResultAddress4Start = NULL;
|
|---|
| 380 | pszResultAddress4Start = (char *)RTMemTmpAlloc(20);
|
|---|
| 381 |
|
|---|
| 382 | if (!pszResultAddress4Start)
|
|---|
| 383 | {
|
|---|
| 384 | returnValue = 401;
|
|---|
| 385 | break;
|
|---|
| 386 | }
|
|---|
| 387 |
|
|---|
| 388 | memset(pszResultAddress4Start, '\0', 20);
|
|---|
| 389 | pszResultAddress4 = pszResultAddress4Start;
|
|---|
| 390 | pszSourceAddress = pLast;
|
|---|
| 391 | pFrom = pLast;
|
|---|
| 392 | pTo = pLast;
|
|---|
| 393 | pLast = NULL;
|
|---|
| 394 | continue;
|
|---|
| 395 | }
|
|---|
| 396 |
|
|---|
| 397 | pTo = pNow;
|
|---|
| 398 | pNowDigit = NULL;
|
|---|
| 399 | pNowDigit = (char *)memchr(pszIpV4AddressChars, *pNow, strlen(pszIpV4AddressChars) - 4);
|
|---|
| 400 |
|
|---|
| 401 | if (!pNowDigit && *pNow != '.' && *pNow != ']' && *pNow != ':' && *pNow != '%')
|
|---|
| 402 | returnValue = 412;
|
|---|
| 403 |
|
|---|
| 404 | if ((pNow - pFrom) > 3)
|
|---|
| 405 | {
|
|---|
| 406 | returnValue = 402;
|
|---|
| 407 | break;
|
|---|
| 408 | }
|
|---|
| 409 |
|
|---|
| 410 | if (pNowDigit && *pNext != '\0')
|
|---|
| 411 | {
|
|---|
| 412 | pszSourceAddress++;
|
|---|
| 413 | continue;
|
|---|
| 414 | }
|
|---|
| 415 |
|
|---|
| 416 | if (!pNowDigit && !pBracketOpen && (*pNext == '.' || *pNext == ']' || *pNext == ':'))
|
|---|
| 417 | returnValue = 411;
|
|---|
| 418 |
|
|---|
| 419 | memset(pszResultAddress4, '0', 3);
|
|---|
| 420 | pMisc = pszResultAddress4 + 2;
|
|---|
| 421 | pszResultAddress4 = pszResultAddress4 + 3;
|
|---|
| 422 |
|
|---|
| 423 | if (*pNow != '.' && !pNowDigit && strlen(pszResultAddress4Start) < 9)
|
|---|
| 424 | returnValue = 403;
|
|---|
| 425 |
|
|---|
| 426 | if ((pTo - pFrom) > 0)
|
|---|
| 427 | pTo--;
|
|---|
| 428 |
|
|---|
| 429 | dots++;
|
|---|
| 430 |
|
|---|
| 431 | while (pTo >= pFrom)
|
|---|
| 432 | {
|
|---|
| 433 | *pMisc = *pTo;
|
|---|
| 434 | pMisc--;
|
|---|
| 435 | pTo--;
|
|---|
| 436 | }
|
|---|
| 437 |
|
|---|
| 438 | if (dots == 4 && *pNow == '.')
|
|---|
| 439 | {
|
|---|
| 440 | if (!pBracketOpen)
|
|---|
| 441 | {
|
|---|
| 442 | pszResultPort = pszSourceAddressStart;
|
|---|
| 443 | pLast = pNext;
|
|---|
| 444 | }
|
|---|
| 445 | else
|
|---|
| 446 | {
|
|---|
| 447 | returnValue = 409;
|
|---|
| 448 | }
|
|---|
| 449 | }
|
|---|
| 450 |
|
|---|
| 451 | dots = 0;
|
|---|
| 452 |
|
|---|
| 453 | pFrom = pNext;
|
|---|
| 454 | pTo = pNext;
|
|---|
| 455 |
|
|---|
| 456 | if (strlen(pszResultAddress4Start) > 11)
|
|---|
| 457 | pszResultAddress4 = NULL;
|
|---|
| 458 |
|
|---|
| 459 | if ((*pNow == ':' || *pNow == '.') && strlen(pszResultAddress4Start) == 12)
|
|---|
| 460 | {
|
|---|
| 461 | pLast = pNext;
|
|---|
| 462 | pszResultPort = pszSourceAddressStart;
|
|---|
| 463 | }
|
|---|
| 464 |
|
|---|
| 465 | if (*pNow == '%')
|
|---|
| 466 | {
|
|---|
| 467 | pIfId = pNow;
|
|---|
| 468 | pLast = pNow;
|
|---|
| 469 | continue;
|
|---|
| 470 | }
|
|---|
| 471 | pszSourceAddress = pNext;
|
|---|
| 472 |
|
|---|
| 473 | if (*pNow != ']')
|
|---|
| 474 | continue;
|
|---|
| 475 |
|
|---|
| 476 | pFrom = pNow;
|
|---|
| 477 | pTo = pNow;
|
|---|
| 478 | }
|
|---|
| 479 |
|
|---|
| 480 | if (pIfId && (!pIfIdEnd))
|
|---|
| 481 | {
|
|---|
| 482 | if (*pIfId == '%' && pIfId == pLast && *pNext != '\0')
|
|---|
| 483 | {
|
|---|
| 484 | pFrom = pNext;
|
|---|
| 485 | pIfId = pNext;
|
|---|
| 486 | pLast = NULL;
|
|---|
| 487 |
|
|---|
| 488 | pszSourceAddress++;
|
|---|
| 489 | continue;
|
|---|
| 490 | }
|
|---|
| 491 |
|
|---|
| 492 | if (*pNow == '%' && pIfId <= pNow)
|
|---|
| 493 | {
|
|---|
| 494 | returnValue = 442;
|
|---|
| 495 | break;
|
|---|
| 496 | }
|
|---|
| 497 |
|
|---|
| 498 | if (*pNow != ']' && *pNext != '\0')
|
|---|
| 499 | {
|
|---|
| 500 | pTo = pNow;
|
|---|
| 501 | pszSourceAddress++;
|
|---|
| 502 | continue;
|
|---|
| 503 | }
|
|---|
| 504 |
|
|---|
| 505 | if (*pNow == ']')
|
|---|
| 506 | {
|
|---|
| 507 | pIfIdEnd = pNow - 1;
|
|---|
| 508 | pFrom = pNow;
|
|---|
| 509 | pTo = pNow;
|
|---|
| 510 | continue;
|
|---|
| 511 | }
|
|---|
| 512 | else
|
|---|
| 513 | {
|
|---|
| 514 | pIfIdEnd = pNow;
|
|---|
| 515 | pFrom = NULL;
|
|---|
| 516 | pTo = NULL;
|
|---|
| 517 | pszSourceAddress++;
|
|---|
| 518 | continue;
|
|---|
| 519 | }
|
|---|
| 520 | }
|
|---|
| 521 |
|
|---|
| 522 | if (!pNowChar)
|
|---|
| 523 | {
|
|---|
| 524 | returnValue = 254;
|
|---|
| 525 |
|
|---|
| 526 | if (followRfc)
|
|---|
| 527 | {
|
|---|
| 528 | pMisc = (char *)memchr(&szIpV6AddressChars[0], *pNow, strlen(&szIpV6AddressChars[0]));
|
|---|
| 529 |
|
|---|
| 530 | if (pMisc)
|
|---|
| 531 | returnValue = 253;
|
|---|
| 532 | }
|
|---|
| 533 | }
|
|---|
| 534 |
|
|---|
| 535 | if (strlen(pszResultAddressStart) > 32 && !pszResultAddress4Start)
|
|---|
| 536 | returnValue = 255;
|
|---|
| 537 |
|
|---|
| 538 | if (pNowDigit && *pNext != '\0' && colons == 0)
|
|---|
| 539 | {
|
|---|
| 540 | pTo = pNow;
|
|---|
| 541 | pszSourceAddress++;
|
|---|
| 542 | continue;
|
|---|
| 543 | }
|
|---|
| 544 |
|
|---|
| 545 | if (*pNow == ':' && *pNext != '\0')
|
|---|
| 546 | {
|
|---|
| 547 | colonsOverAll++;
|
|---|
| 548 | colons++;
|
|---|
| 549 | pszSourceAddress++;
|
|---|
| 550 | continue;
|
|---|
| 551 | }
|
|---|
| 552 |
|
|---|
| 553 | if (*pNow == ':' )
|
|---|
| 554 | {
|
|---|
| 555 | colons++;
|
|---|
| 556 | colonsOverAll++;
|
|---|
| 557 | }
|
|---|
| 558 |
|
|---|
| 559 | if (*pNow == '.')
|
|---|
| 560 | {
|
|---|
| 561 | pMisc = pNow;
|
|---|
| 562 |
|
|---|
| 563 | while (*pMisc != '\0' && *pMisc != ']')
|
|---|
| 564 | {
|
|---|
| 565 | if (*pMisc == '.')
|
|---|
| 566 | dots++;
|
|---|
| 567 |
|
|---|
| 568 | pMisc++;
|
|---|
| 569 | }
|
|---|
| 570 | }
|
|---|
| 571 |
|
|---|
| 572 | if (*pNow == ']')
|
|---|
| 573 | {
|
|---|
| 574 | if (pBracketClose)
|
|---|
| 575 | returnValue = 77;
|
|---|
| 576 |
|
|---|
| 577 | if (!pBracketOpen)
|
|---|
| 578 | returnValue = 22;
|
|---|
| 579 |
|
|---|
| 580 | if (*pNext == ':' || *pNext == '.')
|
|---|
| 581 | {
|
|---|
| 582 | pszResultPort = pszSourceAddressStart;
|
|---|
| 583 | pLast = pNext + 1;
|
|---|
| 584 | }
|
|---|
| 585 |
|
|---|
| 586 | if (pFrom == pNow)
|
|---|
| 587 | pFrom = NULL;
|
|---|
| 588 |
|
|---|
| 589 | pBracketClose = pNow;
|
|---|
| 590 | }
|
|---|
| 591 |
|
|---|
| 592 | if (*pNow == '[')
|
|---|
| 593 | {
|
|---|
| 594 | if (pBracketOpen)
|
|---|
| 595 | returnValue = 23;
|
|---|
| 596 |
|
|---|
| 597 | if (pStart != pNow)
|
|---|
| 598 | returnValue = 24;
|
|---|
| 599 |
|
|---|
| 600 | pBracketOpen = pNow;
|
|---|
| 601 | pStart++;
|
|---|
| 602 | pFrom++;
|
|---|
| 603 | pszSourceAddress++;
|
|---|
| 604 | continue;
|
|---|
| 605 | }
|
|---|
| 606 |
|
|---|
| 607 | if (*pNow == '%')
|
|---|
| 608 | {
|
|---|
| 609 | if (pIfId)
|
|---|
| 610 | returnValue = 441;
|
|---|
| 611 |
|
|---|
| 612 | pLast = pNext;
|
|---|
| 613 | pIfId = pNext;
|
|---|
| 614 | }
|
|---|
| 615 |
|
|---|
| 616 | if (colons > 0)
|
|---|
| 617 | {
|
|---|
| 618 | if (colons == 1)
|
|---|
| 619 | {
|
|---|
| 620 | if (pStart + 1 == pNow )
|
|---|
| 621 | returnValue = 31;
|
|---|
| 622 |
|
|---|
| 623 | if (*pNext == '\0' && !pNowDigit)
|
|---|
| 624 | returnValue = 32;
|
|---|
| 625 |
|
|---|
| 626 | pLast = pNow;
|
|---|
| 627 | }
|
|---|
| 628 |
|
|---|
| 629 | if (colons == 2)
|
|---|
| 630 | {
|
|---|
| 631 | if (pGap)
|
|---|
| 632 | returnValue = 33;
|
|---|
| 633 |
|
|---|
| 634 | pGap = pszResultAddress + 4;
|
|---|
| 635 |
|
|---|
| 636 | if (pStart + 1 == pNow || pStart + 2 == pNow)
|
|---|
| 637 | {
|
|---|
| 638 | pGap = pszResultAddressStart;
|
|---|
| 639 | pFrom = pNow;
|
|---|
| 640 | }
|
|---|
| 641 |
|
|---|
| 642 | if (*pNext == '\0' && !pNowDigit)
|
|---|
| 643 | pszSourceAddress++;
|
|---|
| 644 |
|
|---|
| 645 | if (*pNext != ':' && *pNext != '.')
|
|---|
| 646 | pLast = pNow;
|
|---|
| 647 | }
|
|---|
| 648 |
|
|---|
| 649 | if (colons == 3)
|
|---|
| 650 | {
|
|---|
| 651 | pFrom = pLast;
|
|---|
| 652 | pLast = pNow;
|
|---|
| 653 |
|
|---|
| 654 | if (*pNext == '\0' && !pNowDigit)
|
|---|
| 655 | returnValue = 34;
|
|---|
| 656 |
|
|---|
| 657 | if (pBracketOpen)
|
|---|
| 658 | returnValue = 35;
|
|---|
| 659 |
|
|---|
| 660 | if (pGap && followRfc)
|
|---|
| 661 | returnValue = 36;
|
|---|
| 662 |
|
|---|
| 663 | if (!pGap)
|
|---|
| 664 | pGap = pszResultAddress + 4;
|
|---|
| 665 |
|
|---|
| 666 | if (pStart + 3 == pNow)
|
|---|
| 667 | {
|
|---|
| 668 | pszResultPort = pszSourceAddressStart;
|
|---|
| 669 | pGap = pszResultAddress;
|
|---|
| 670 | pFrom = NULL;
|
|---|
| 671 | }
|
|---|
| 672 |
|
|---|
| 673 | if (pNowDigit)
|
|---|
| 674 | {
|
|---|
| 675 | pszResultPort = pszSourceAddressStart;
|
|---|
| 676 | }
|
|---|
| 677 | }
|
|---|
| 678 | }
|
|---|
| 679 | if (*pNext == '\0' && colons == 0 && !pIfIdEnd)
|
|---|
| 680 | {
|
|---|
| 681 | pFrom = pLast;
|
|---|
| 682 |
|
|---|
| 683 | if (pNowDigit)
|
|---|
| 684 | pTo = pNow;
|
|---|
| 685 |
|
|---|
| 686 | pLast = NULL;
|
|---|
| 687 | }
|
|---|
| 688 |
|
|---|
| 689 | if (dots > 0)
|
|---|
| 690 | {
|
|---|
| 691 | if (dots == 1)
|
|---|
| 692 | {
|
|---|
| 693 | pszResultPort = pszSourceAddressStart;
|
|---|
| 694 | pLast = pNext;
|
|---|
| 695 | }
|
|---|
| 696 |
|
|---|
| 697 | if (dots == 4 && pBracketOpen)
|
|---|
| 698 | returnValue = 601;
|
|---|
| 699 |
|
|---|
| 700 | if (dots == 3 || dots == 4)
|
|---|
| 701 | {
|
|---|
| 702 | pszResultAddress4 = pszSourceAddressStart;
|
|---|
| 703 | pLast = pFrom;
|
|---|
| 704 | pFrom = NULL;
|
|---|
| 705 | }
|
|---|
| 706 |
|
|---|
| 707 | if (dots > 4)
|
|---|
| 708 | returnValue = 603;
|
|---|
| 709 |
|
|---|
| 710 | dots = 0;
|
|---|
| 711 | }
|
|---|
| 712 |
|
|---|
| 713 | if (pFrom && pTo)
|
|---|
| 714 | {
|
|---|
| 715 | if (pTo - pFrom > 3)
|
|---|
| 716 | {
|
|---|
| 717 | returnValue = 51;
|
|---|
| 718 | break;
|
|---|
| 719 | }
|
|---|
| 720 |
|
|---|
| 721 | if (followRfc)
|
|---|
| 722 | {
|
|---|
| 723 | if ((pTo - pFrom > 0) && *pFrom == '0')
|
|---|
| 724 | returnValue = 101;
|
|---|
| 725 |
|
|---|
| 726 | if ((pTo - pFrom) == 0 && *pFrom == '0' && colons == 2)
|
|---|
| 727 | returnValue = 102;
|
|---|
| 728 |
|
|---|
| 729 | if ((pTo - pFrom) == 0 && *pFrom == '0' && pszResultAddress == pGap)
|
|---|
| 730 | returnValue = 103;
|
|---|
| 731 |
|
|---|
| 732 | if ((pTo - pFrom) == 0 && *pFrom == '0')
|
|---|
| 733 | {
|
|---|
| 734 | if (!pFieldStart)
|
|---|
| 735 | {
|
|---|
| 736 | pFieldStart = pszResultAddress;
|
|---|
| 737 | pFieldEnd = pszResultAddress + 4;
|
|---|
| 738 | }
|
|---|
| 739 | else
|
|---|
| 740 | {
|
|---|
| 741 | pFieldEnd = pFieldEnd + 4;
|
|---|
| 742 | }
|
|---|
| 743 | }
|
|---|
| 744 | else
|
|---|
| 745 | {
|
|---|
| 746 | if ((size_t)(pFieldEnd - pFieldStart) > fieldLength)
|
|---|
| 747 | {
|
|---|
| 748 | fieldLength = pFieldEnd - pFieldStart;
|
|---|
| 749 | pFieldStartLongest = pFieldStart;
|
|---|
| 750 | }
|
|---|
| 751 |
|
|---|
| 752 | pFieldStart = NULL;
|
|---|
| 753 | pFieldEnd = NULL;
|
|---|
| 754 | }
|
|---|
| 755 | }
|
|---|
| 756 | if (!(pGap == pszResultAddressStart && (size_t)(pNow - pStart) == colons))
|
|---|
| 757 | {
|
|---|
| 758 | memset(pszResultAddress, '0', 4);
|
|---|
| 759 | pMisc = pszResultAddress + 3;
|
|---|
| 760 | pszResultAddress = pszResultAddress + 4;
|
|---|
| 761 |
|
|---|
| 762 | if (pFrom == pStart && (pTo - pFrom) == 3)
|
|---|
| 763 | {
|
|---|
| 764 | isLinkLocal = true;
|
|---|
| 765 |
|
|---|
| 766 | while (pTo >= pFrom)
|
|---|
| 767 | {
|
|---|
| 768 | *pMisc = *pTo;
|
|---|
| 769 |
|
|---|
| 770 | if (*pTo != *pszLinkLocalPrefix && *pTo != *(pszLinkLocalPrefix + 1))
|
|---|
| 771 | isLinkLocal = false;
|
|---|
| 772 |
|
|---|
| 773 | pTo--;
|
|---|
| 774 | pMisc--;
|
|---|
| 775 | pszLinkLocalPrefix = pszLinkLocalPrefix - 2;
|
|---|
| 776 | }
|
|---|
| 777 | }
|
|---|
| 778 | else
|
|---|
| 779 | {
|
|---|
| 780 | while (pTo >= pFrom)
|
|---|
| 781 | {
|
|---|
| 782 | *pMisc = *pTo;
|
|---|
| 783 | pMisc--;
|
|---|
| 784 | pTo--;
|
|---|
| 785 | }
|
|---|
| 786 | }
|
|---|
| 787 | }
|
|---|
| 788 |
|
|---|
| 789 | pFrom = pNow;
|
|---|
| 790 | pTo = pNow;
|
|---|
| 791 |
|
|---|
| 792 | }
|
|---|
| 793 | if (*pNext == '\0' && colons == 0)
|
|---|
| 794 | pszSourceAddress++;
|
|---|
| 795 |
|
|---|
| 796 | if (*pNext == '\0' && !pBracketClose && !pszResultPort)
|
|---|
| 797 | pTo = pNext;
|
|---|
| 798 |
|
|---|
| 799 | colons = 0;
|
|---|
| 800 | } // end of loop
|
|---|
| 801 |
|
|---|
| 802 | if (!returnValue && colonsOverAll < 2)
|
|---|
| 803 | returnValue = 252;
|
|---|
| 804 |
|
|---|
| 805 | if (!returnValue && (pBracketOpen && !pBracketClose))
|
|---|
| 806 | returnValue = 25;
|
|---|
| 807 |
|
|---|
| 808 | if (!returnValue && pGap)
|
|---|
| 809 | {
|
|---|
| 810 | gapSize = 32 - strlen(pszResultAddressStart);
|
|---|
| 811 |
|
|---|
| 812 | if (followRfc)
|
|---|
| 813 | {
|
|---|
| 814 | if (gapSize < 5)
|
|---|
| 815 | returnValue = 104;
|
|---|
| 816 |
|
|---|
| 817 | if (fieldLength > gapSize)
|
|---|
| 818 | returnValue = 105;
|
|---|
| 819 |
|
|---|
| 820 | if (fieldLength == gapSize && pFieldStartLongest < pGap)
|
|---|
| 821 | returnValue = 106;
|
|---|
| 822 | }
|
|---|
| 823 |
|
|---|
| 824 | pszResultAddress = pszResultAddressStart;
|
|---|
| 825 | pszInternalAddress = pszInternalAddressStart;
|
|---|
| 826 |
|
|---|
| 827 | if (!returnValue && pszResultAddress4Start)
|
|---|
| 828 | {
|
|---|
| 829 | if (strlen(pszResultAddressStart) > 4)
|
|---|
| 830 | returnValue = 405;
|
|---|
| 831 |
|
|---|
| 832 | pszResultAddress = pszResultAddressStart;
|
|---|
| 833 |
|
|---|
| 834 | if (pGap != pszResultAddressStart)
|
|---|
| 835 | returnValue = 407;
|
|---|
| 836 |
|
|---|
| 837 | memset(pszInternalAddressStart, '0', 20);
|
|---|
| 838 | pszInternalAddress = pszInternalAddressStart + 20;
|
|---|
| 839 |
|
|---|
| 840 | for (int i = 0; i < 4; i++)
|
|---|
| 841 | {
|
|---|
| 842 | if (*pszResultAddress != 'f' && *pszResultAddress != 'F')
|
|---|
| 843 | {
|
|---|
| 844 | returnValue = 406;
|
|---|
| 845 | break;
|
|---|
| 846 | }
|
|---|
| 847 |
|
|---|
| 848 | *pszInternalAddress = *pszResultAddress;
|
|---|
| 849 | pszResultAddress++;
|
|---|
| 850 | pszInternalAddress++;
|
|---|
| 851 | }
|
|---|
| 852 | pszResultAddress4 = pszResultAddress4Start;
|
|---|
| 853 |
|
|---|
| 854 | for (int i = 0; i<4; i++)
|
|---|
| 855 | {
|
|---|
| 856 | memcpy(szDummy, pszResultAddress4, 3);
|
|---|
| 857 |
|
|---|
| 858 | int rc = RTStrToUInt32Ex((const char *)&szDummy[0], NULL, 16, &byteOut);
|
|---|
| 859 |
|
|---|
| 860 | if (rc == 0 && byteOut < 256)
|
|---|
| 861 | {
|
|---|
| 862 | RTStrPrintf(szDummy, 3, "%02x", byteOut);
|
|---|
| 863 | memcpy(pszInternalAddress, szDummy, 2);
|
|---|
| 864 | pszInternalAddress = pszInternalAddress + 2;
|
|---|
| 865 | pszResultAddress4 = pszResultAddress4 + 3;
|
|---|
| 866 | memset(szDummy, '\0', 4);
|
|---|
| 867 | }
|
|---|
| 868 | else
|
|---|
| 869 | {
|
|---|
| 870 | returnValue = 499;
|
|---|
| 871 | }
|
|---|
| 872 | }
|
|---|
| 873 | }
|
|---|
| 874 | else
|
|---|
| 875 | {
|
|---|
| 876 | while (!returnValue && pszResultAddress != pGap)
|
|---|
| 877 | {
|
|---|
| 878 | *pszInternalAddress = *pszResultAddress;
|
|---|
| 879 | pszResultAddress++;
|
|---|
| 880 | pszInternalAddress++;
|
|---|
| 881 | }
|
|---|
| 882 |
|
|---|
| 883 | memset(pszInternalAddress, '0', gapSize);
|
|---|
| 884 | pszInternalAddress = pszInternalAddress + gapSize;
|
|---|
| 885 |
|
|---|
| 886 | while (!returnValue && *pszResultAddress != '\0')
|
|---|
| 887 | {
|
|---|
| 888 | *pszInternalAddress = *pszResultAddress;
|
|---|
| 889 | pszResultAddress++;
|
|---|
| 890 | pszInternalAddress++;
|
|---|
| 891 | }
|
|---|
| 892 | }
|
|---|
| 893 | }
|
|---|
| 894 | else
|
|---|
| 895 | {
|
|---|
| 896 | if (!returnValue)
|
|---|
| 897 | {
|
|---|
| 898 | if (strlen(pszResultAddressStart) != 32)
|
|---|
| 899 | returnValue = 111;
|
|---|
| 900 |
|
|---|
| 901 | if (followRfc)
|
|---|
| 902 | {
|
|---|
| 903 | if (fieldLength > 4)
|
|---|
| 904 | returnValue = 112;
|
|---|
| 905 | }
|
|---|
| 906 |
|
|---|
| 907 | memcpy(pszInternalAddressStart, pszResultAddressStart, strlen(pszResultAddressStart));
|
|---|
| 908 | }
|
|---|
| 909 | }
|
|---|
| 910 |
|
|---|
| 911 | if (pszResultPortStart)
|
|---|
| 912 | {
|
|---|
| 913 | if (strlen(pszResultPortStart) > 0 && strlen(pszResultPortStart) < 6)
|
|---|
| 914 | {
|
|---|
| 915 | memcpy(pszInternalPortStart, pszResultPortStart, strlen(pszResultPortStart));
|
|---|
| 916 |
|
|---|
| 917 | intPortOut = 0;
|
|---|
| 918 | int rc = RTStrToUInt32Ex(pszInternalPortStart, NULL, 10, &intPortOut);
|
|---|
| 919 |
|
|---|
| 920 | if (rc == 0)
|
|---|
| 921 | {
|
|---|
| 922 | if (!(intPortOut > 0 && intPortOut < 65536))
|
|---|
| 923 | intPortOut = 0;
|
|---|
| 924 | }
|
|---|
| 925 | else
|
|---|
| 926 | {
|
|---|
| 927 | returnValue = 888;
|
|---|
| 928 | }
|
|---|
| 929 | }
|
|---|
| 930 | else
|
|---|
| 931 | {
|
|---|
| 932 | returnValue = 889;
|
|---|
| 933 | }
|
|---|
| 934 | }
|
|---|
| 935 |
|
|---|
| 936 | /*
|
|---|
| 937 | full blown address 32 bytes, no colons -> pszInternalAddressStart
|
|---|
| 938 | port as string -> pszResultPortStart
|
|---|
| 939 | port as binary integer -> intPortOut
|
|---|
| 940 | interface id in pIfId and pIfIdEnd
|
|---|
| 941 |
|
|---|
| 942 | Now fill the out parameters.
|
|---|
| 943 |
|
|---|
| 944 | */
|
|---|
| 945 |
|
|---|
| 946 | if (!returnValue && pszAddressOut)
|
|---|
| 947 | {
|
|---|
| 948 | if (strlen(pszInternalAddressStart) < addressOutSize)
|
|---|
| 949 | {
|
|---|
| 950 | pszRc = NULL;
|
|---|
| 951 | pszRc = (char *)memset(pszAddressOut, '\0', addressOutSize);
|
|---|
| 952 |
|
|---|
| 953 | if (!pszRc)
|
|---|
| 954 | returnValue = 910;
|
|---|
| 955 |
|
|---|
| 956 | pszRc = NULL;
|
|---|
| 957 |
|
|---|
| 958 | pszRc = (char *)memcpy(pszAddressOut, pszInternalAddressStart, strlen(pszInternalAddressStart));
|
|---|
| 959 |
|
|---|
| 960 | if (!pszRc)
|
|---|
| 961 | returnValue = 911;
|
|---|
| 962 | }
|
|---|
| 963 | else
|
|---|
| 964 | {
|
|---|
| 965 | returnValue = 912;
|
|---|
| 966 | }
|
|---|
| 967 | }
|
|---|
| 968 |
|
|---|
| 969 | if (!returnValue && pPortOut)
|
|---|
| 970 | {
|
|---|
| 971 | *pPortOut = intPortOut;
|
|---|
| 972 | }
|
|---|
| 973 |
|
|---|
| 974 | if (!returnValue && pszIfIdOut)
|
|---|
| 975 | {
|
|---|
| 976 | if (pIfIdEnd && pIfId)
|
|---|
| 977 | {
|
|---|
| 978 | if ((size_t)(pIfIdEnd - pIfId) + 1 < ifIdOutSize)
|
|---|
| 979 | {
|
|---|
| 980 | pszRc = NULL;
|
|---|
| 981 | pszRc = (char *)memset(pszIfIdOut, '\0', ifIdOutSize);
|
|---|
| 982 |
|
|---|
| 983 | if (!pszRc)
|
|---|
| 984 | returnValue = 913;
|
|---|
| 985 |
|
|---|
| 986 | pszRc = NULL;
|
|---|
| 987 | pszRc = (char *)memcpy(pszIfIdOut, pIfId, (pIfIdEnd - pIfId) + 1);
|
|---|
| 988 |
|
|---|
| 989 | if (!pszRc)
|
|---|
| 990 | returnValue = 914;
|
|---|
| 991 | }
|
|---|
| 992 | else
|
|---|
| 993 | {
|
|---|
| 994 | returnValue = 915;
|
|---|
| 995 | }
|
|---|
| 996 | }
|
|---|
| 997 | else
|
|---|
| 998 | {
|
|---|
| 999 | pszRc = NULL;
|
|---|
| 1000 | pszRc = (char *)memset(pszIfIdOut, '\0', ifIdOutSize);
|
|---|
| 1001 |
|
|---|
| 1002 | if (!pszRc)
|
|---|
| 1003 | returnValue = 916;
|
|---|
| 1004 | }
|
|---|
| 1005 | // temporary hack
|
|---|
| 1006 | if (isLinkLocal && (strlen(pszIfIdOut) < 1))
|
|---|
| 1007 | {
|
|---|
| 1008 | memset(pszIfIdOut, '\0', ifIdOutSize);
|
|---|
| 1009 | *pszIfIdOut = '%';
|
|---|
| 1010 | pszIfIdOut++;
|
|---|
| 1011 | *pszIfIdOut = '0';
|
|---|
| 1012 | pszIfIdOut++;
|
|---|
| 1013 | }
|
|---|
| 1014 | }
|
|---|
| 1015 |
|
|---|
| 1016 | if (pBracketOpen && pBracketClose && pBrackets)
|
|---|
| 1017 | *pBrackets = true;
|
|---|
| 1018 |
|
|---|
| 1019 | if (pEmbeddedV4 && pszResultAddress4Start)
|
|---|
| 1020 | *pEmbeddedV4 = true;
|
|---|
| 1021 |
|
|---|
| 1022 | if (pszResultAddressStart)
|
|---|
| 1023 | RTMemTmpFree(pszResultAddressStart);
|
|---|
| 1024 |
|
|---|
| 1025 | if (pszResultPortStart)
|
|---|
| 1026 | RTMemTmpFree(pszResultPortStart);
|
|---|
| 1027 |
|
|---|
| 1028 | if (pszResultAddress4Start)
|
|---|
| 1029 | RTMemTmpFree(pszResultAddress4Start);
|
|---|
| 1030 |
|
|---|
| 1031 | if (pszInternalAddressStart)
|
|---|
| 1032 | RTMemTmpFree(pszInternalAddressStart);
|
|---|
| 1033 |
|
|---|
| 1034 | if (pszInternalPortStart)
|
|---|
| 1035 | RTMemTmpFree(pszInternalPortStart);
|
|---|
| 1036 |
|
|---|
| 1037 | return (uint32_t)(returnValue - (returnValue * 2)); // make it negative...
|
|---|
| 1038 | }
|
|---|
| 1039 |
|
|---|
| 1040 | /**
|
|---|
| 1041 | * Takes a string and returns a RFC compliant string of the address
|
|---|
| 1042 | * This function SHOULD NOT be used directly. It expects a 33 byte
|
|---|
| 1043 | * char array with a full blown IPv6 address without separators.
|
|---|
| 1044 | *
|
|---|
| 1045 | * @returns iprt status code.
|
|---|
| 1046 | * @param psz The string to convert
|
|---|
| 1047 | * @param pszAddrOut The char[] that will hold the result
|
|---|
| 1048 | * @param addOutSize The size of the char[] from above.
|
|---|
| 1049 | * @param pszPortOut char[] for the text representation of the port
|
|---|
| 1050 | * @param portOutSize sizeof(pszPortOut);
|
|---|
| 1051 | */
|
|---|
| 1052 | DECLHIDDEN(int) rtStrToIpAddr6Str(const char *psz, char *pszAddrOut, size_t addrOutSize, char *pszPortOut, size_t portOutSize, bool followRfc)
|
|---|
| 1053 | {
|
|---|
| 1054 | char *pStart = NULL;
|
|---|
| 1055 | char *pGapStart = NULL;
|
|---|
| 1056 | char *pGapEnd = NULL;
|
|---|
| 1057 | char *pGapTStart = NULL;
|
|---|
| 1058 | char *pGapTEnd = NULL;
|
|---|
| 1059 | char *pCurrent = NULL;
|
|---|
| 1060 | char *pOut = NULL;
|
|---|
| 1061 |
|
|---|
| 1062 | if (!psz || !pszAddrOut)
|
|---|
| 1063 | return VERR_NOT_SUPPORTED;
|
|---|
| 1064 |
|
|---|
| 1065 | if (addrOutSize < 40)
|
|---|
| 1066 | return VERR_NOT_SUPPORTED;
|
|---|
| 1067 |
|
|---|
| 1068 | pStart = (char *)psz;
|
|---|
| 1069 | pCurrent = (char *)psz;
|
|---|
| 1070 | pGapStart = (char *)psz;
|
|---|
| 1071 | pGapEnd = (char *)psz;
|
|---|
| 1072 |
|
|---|
| 1073 | while (*pCurrent != '\0')
|
|---|
| 1074 | {
|
|---|
| 1075 | if (*pCurrent != '0')
|
|---|
| 1076 | pGapTStart = NULL;
|
|---|
| 1077 |
|
|---|
| 1078 | if ((pCurrent - pStart) % 4 == 0) // ok, start of a hextet
|
|---|
| 1079 | {
|
|---|
| 1080 | if (*pCurrent == '0' && !pGapTStart)
|
|---|
| 1081 | pGapTStart = pCurrent;
|
|---|
| 1082 | }
|
|---|
| 1083 |
|
|---|
| 1084 | if ((pCurrent - pStart) % 4 == 3)
|
|---|
| 1085 | {
|
|---|
| 1086 | if (*pCurrent == '0' && pGapTStart)
|
|---|
| 1087 | pGapTEnd = pCurrent;
|
|---|
| 1088 |
|
|---|
| 1089 | if (pGapTStart && pGapTEnd)
|
|---|
| 1090 | {
|
|---|
| 1091 | pGapTEnd = pCurrent;
|
|---|
| 1092 |
|
|---|
| 1093 | if ((pGapTEnd - pGapTStart) > (pGapEnd - pGapStart))
|
|---|
| 1094 | {
|
|---|
| 1095 | pGapEnd = pGapTEnd;
|
|---|
| 1096 | pGapStart = pGapTStart;
|
|---|
| 1097 | }
|
|---|
| 1098 | }
|
|---|
| 1099 | }
|
|---|
| 1100 |
|
|---|
| 1101 | pCurrent++;
|
|---|
| 1102 | }
|
|---|
| 1103 |
|
|---|
| 1104 | pCurrent = (char *)psz;
|
|---|
| 1105 | pStart = (char *)psz;
|
|---|
| 1106 | pOut = (char *)pszAddrOut;
|
|---|
| 1107 |
|
|---|
| 1108 | while (*pCurrent != '\0')
|
|---|
| 1109 | {
|
|---|
| 1110 | if (*pCurrent != '0')
|
|---|
| 1111 | pGapTStart = NULL;
|
|---|
| 1112 |
|
|---|
| 1113 | if (!pGapTStart)
|
|---|
| 1114 | {
|
|---|
| 1115 | *pOut = *pCurrent;
|
|---|
| 1116 | pOut++;
|
|---|
| 1117 | }
|
|---|
| 1118 |
|
|---|
| 1119 | if ((pCurrent - pStart) % 4 == 3)
|
|---|
| 1120 | {
|
|---|
| 1121 | if (pGapTStart && *pCurrent == '0')
|
|---|
| 1122 | {
|
|---|
| 1123 | *pOut = *pCurrent;
|
|---|
| 1124 | pOut++;
|
|---|
| 1125 | }
|
|---|
| 1126 |
|
|---|
| 1127 | if (*(pCurrent + 1) != '\0')
|
|---|
| 1128 | {
|
|---|
| 1129 | *pOut = ':';
|
|---|
| 1130 | pOut++;
|
|---|
| 1131 | }
|
|---|
| 1132 |
|
|---|
| 1133 | pGapTStart = pCurrent + 1;
|
|---|
| 1134 | }
|
|---|
| 1135 |
|
|---|
| 1136 | if ((pCurrent + 1) == pGapStart && (pGapEnd - pGapStart) > 3)
|
|---|
| 1137 | {
|
|---|
| 1138 | *pOut = ':';
|
|---|
| 1139 | pOut++;
|
|---|
| 1140 | pCurrent = pGapEnd;
|
|---|
| 1141 | }
|
|---|
| 1142 |
|
|---|
| 1143 | pCurrent++;
|
|---|
| 1144 | }
|
|---|
| 1145 |
|
|---|
| 1146 | return VINF_SUCCESS;
|
|---|
| 1147 | }
|
|---|
| 1148 |
|
|---|
| 1149 |
|
|---|
| 1150 | /**
|
|---|
| 1151 | * Tests if the given string is a valid IPv6 address.
|
|---|
| 1152 | *
|
|---|
| 1153 | * @returns 0 if valid, some random number if not. THIS IS NOT AN IPRT STATUS!
|
|---|
| 1154 | * @param psz The string to test
|
|---|
| 1155 | * @param pszResultAddress plain address, optional read "valid addresses
|
|---|
| 1156 | * and strings" above.
|
|---|
| 1157 | * @param resultAddressSize size of pszResultAddress
|
|---|
| 1158 | * @param addressOnly return only the plain address (no scope)
|
|---|
| 1159 | * Ignored, and will always return the if id
|
|---|
| 1160 | */
|
|---|
| 1161 | static int rtNetIpv6CheckAddrStr(const char *psz, char *pszResultAddress, size_t resultAddressSize, bool addressOnly, bool followRfc)
|
|---|
| 1162 | {
|
|---|
| 1163 | int rc;
|
|---|
| 1164 | int rc2;
|
|---|
| 1165 | int returnValue = VERR_NOT_SUPPORTED; /* gcc want's this initialized, I understand its confusion. */
|
|---|
| 1166 |
|
|---|
| 1167 | char *p = NULL, *pl = NULL;
|
|---|
| 1168 |
|
|---|
| 1169 | size_t memAllocMaxSize = RT_MAX(strlen(psz), resultAddressSize) + 40;
|
|---|
| 1170 |
|
|---|
| 1171 | char *pszAddressOutLocal = (char *)RTMemTmpAlloc(memAllocMaxSize);
|
|---|
| 1172 | char *pszIfIdOutLocal = (char *)RTMemTmpAlloc(memAllocMaxSize);
|
|---|
| 1173 | char *pszAddressRfcOutLocal = (char *)RTMemTmpAlloc(memAllocMaxSize);
|
|---|
| 1174 |
|
|---|
| 1175 | if (!pszAddressOutLocal || !pszIfIdOutLocal || !pszAddressRfcOutLocal)
|
|---|
| 1176 | return VERR_NO_TMP_MEMORY;
|
|---|
| 1177 |
|
|---|
| 1178 | memset(pszAddressOutLocal, '\0', memAllocMaxSize);
|
|---|
| 1179 | memset(pszIfIdOutLocal, '\0', memAllocMaxSize);
|
|---|
| 1180 | memset(pszAddressRfcOutLocal, '\0', memAllocMaxSize);
|
|---|
| 1181 |
|
|---|
| 1182 | rc = rtStrParseAddrStr6(psz, strlen(psz), pszAddressOutLocal, memAllocMaxSize, NULL, pszIfIdOutLocal, memAllocMaxSize, NULL, NULL, followRfc);
|
|---|
| 1183 |
|
|---|
| 1184 | if (rc == 0)
|
|---|
| 1185 | returnValue = VINF_SUCCESS;
|
|---|
| 1186 |
|
|---|
| 1187 | if (rc == 0 && pszResultAddress)
|
|---|
| 1188 | {
|
|---|
| 1189 | // convert the 32 characters to a valid, shortened ipv6 address
|
|---|
| 1190 |
|
|---|
| 1191 | rc2 = rtStrToIpAddr6Str((const char *)pszAddressOutLocal, pszAddressRfcOutLocal, memAllocMaxSize, NULL, 0, followRfc);
|
|---|
| 1192 |
|
|---|
| 1193 | if (rc2 != 0)
|
|---|
| 1194 | returnValue = 951;
|
|---|
| 1195 |
|
|---|
| 1196 | // this is a temporary solution
|
|---|
| 1197 | if (!returnValue && strlen(pszIfIdOutLocal) > 0) // the if identifier is copied over _ALWAYS_ && !addressOnly)
|
|---|
| 1198 | {
|
|---|
| 1199 | p = pszAddressRfcOutLocal + strlen(pszAddressRfcOutLocal);
|
|---|
| 1200 |
|
|---|
| 1201 | *p = '%';
|
|---|
| 1202 |
|
|---|
| 1203 | p++;
|
|---|
| 1204 |
|
|---|
| 1205 | pl = (char *)memcpy(p, pszIfIdOutLocal, strlen(pszIfIdOutLocal));
|
|---|
| 1206 |
|
|---|
| 1207 | if (!pl)
|
|---|
| 1208 | returnValue = VERR_NOT_SUPPORTED;
|
|---|
| 1209 | }
|
|---|
| 1210 |
|
|---|
| 1211 | pl = NULL;
|
|---|
| 1212 |
|
|---|
| 1213 | pl = (char *)memcpy(pszResultAddress, pszAddressRfcOutLocal, strlen(pszAddressRfcOutLocal));
|
|---|
| 1214 |
|
|---|
| 1215 | if (!pl)
|
|---|
| 1216 | returnValue = VERR_NOT_SUPPORTED;
|
|---|
| 1217 | }
|
|---|
| 1218 |
|
|---|
| 1219 | if (rc != 0)
|
|---|
| 1220 | returnValue = VERR_NOT_SUPPORTED;
|
|---|
| 1221 |
|
|---|
| 1222 | if (pszAddressOutLocal)
|
|---|
| 1223 | RTMemTmpFree(pszAddressOutLocal);
|
|---|
| 1224 |
|
|---|
| 1225 | if (pszAddressRfcOutLocal)
|
|---|
| 1226 | RTMemTmpFree(pszAddressRfcOutLocal);
|
|---|
| 1227 |
|
|---|
| 1228 | if (pszIfIdOutLocal)
|
|---|
| 1229 | RTMemTmpFree(pszIfIdOutLocal);
|
|---|
| 1230 |
|
|---|
| 1231 | return returnValue;
|
|---|
| 1232 |
|
|---|
| 1233 | }
|
|---|
