| 1 | /* $Id: netaddrstr.cpp 82968 2020-02-04 10:35:17Z 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) 2012-2020 Oracle Corporation
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| 14 | *
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| 15 | * This file is part of VirtualBox Open Source Edition (OSE), as
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| 16 | * available from http://www.virtualbox.org. This file is free software;
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| 17 | * you can redistribute it and/or modify it under the terms of the GNU
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| 18 | * General Public License (GPL) as published by the Free Software
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| 19 | * Foundation, in version 2 as it comes in the "COPYING" file of the
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| 20 | * VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 21 | * hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 22 | *
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| 23 | * The contents of this file may alternatively be used under the terms
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| 24 | * of the Common Development and Distribution License Version 1.0
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| 25 | * (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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| 26 | * VirtualBox OSE distribution, in which case the provisions of the
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| 27 | * CDDL are applicable instead of those of the GPL.
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| 28 | *
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| 29 | * You may elect to license modified versions of this file under the
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| 30 | * terms and conditions of either the GPL or the CDDL or both.
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| 31 | */
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| 32 |
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| 33 |
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| 34 | /*********************************************************************************************************************************
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| 35 | * Header Files *
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| 36 | *********************************************************************************************************************************/
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| 37 | #include "internal/iprt.h"
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| 38 | #include <iprt/net.h>
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| 39 |
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| 40 | #include <iprt/mem.h>
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| 41 | #include <iprt/string.h>
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| 42 | #include <iprt/stream.h>
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| 43 | #include "internal/string.h"
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| 44 |
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| 45 |
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| 46 | /** @page pg_rtnetipv6_addr IPv6 Address Format
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| 47 | *
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| 48 | * IPv6 Addresses, their representation in text and other problems.
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| 49 | *
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| 50 | * The following is based on:
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| 51 | *
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| 52 | * - http://tools.ietf.org/html/rfc4291
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| 53 | * - http://tools.ietf.org/html/rfc5952
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| 54 | * - http://tools.ietf.org/html/rfc6052
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| 55 | *
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| 56 | *
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| 57 | * Before you start using those functions, you should have an idea of
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| 58 | * what you're dealing with, before you come and blame the functions...
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| 59 | *
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| 60 | * First of all, the address itself:
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| 61 | *
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| 62 | * An address is written like this: (READ THIS FINE MANUAL!)
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| 63 | *
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| 64 | * - 2001:db8:abc:def::1
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| 65 | *
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| 66 | * The characters between two colons are called a "hextet".
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| 67 | * Each hextet consists of four characters and each IPv6 address
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| 68 | * consists of a maximum of eight hextets. So a full blown address
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| 69 | * would look like this:
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| 70 | *
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| 71 | * - 1111:2222:3333:4444:5555:6666:7777:8888
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| 72 | *
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| 73 | * The allowed characters are "0123456789abcdef". They have to be
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| 74 | * lower case. Upper case is not allowed.
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| 75 | *
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| 76 | * *** Gaps and adress shortening
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| 77 | *
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| 78 | * If an address contains hextets that contain only "0"s, they
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| 79 | * can be shortened, like this:
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| 80 | *
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| 81 | * - 1111:2222:0000:0000:0000:0000:7777:8888 -> 1111:2222::7777:8888
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| 82 | *
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| 83 | * The double colon represents the hextets that have been shortened "::".
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| 84 | * The "::" will be called "gap" from now on.
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| 85 | *
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| 86 | * When shortening an address, there are some special rules that need to be applied:
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| 87 | *
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| 88 | * - Shorten always the longest group of hextets.
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| 89 | *
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| 90 | * Let's say, you have this address: 2001:db8:0:0:0:1:0:0 then it has to be
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| 91 | * shortened to "2001:db8::1:0:0". Shortening to "2001:db8:0:0:0:1::" would
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| 92 | * return an error.
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| 93 | *
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| 94 | * - Two or more gaps the same size.
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| 95 | *
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| 96 | * Let's say you have this address: 2001:db8:0:0:1:0:0:1. As you can see, there
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| 97 | * are two gaps, both the size of two hextets. If you shorten the last two hextets,
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| 98 | * you end up in pain, as the RFC forbids this, so the correct address is:
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| 99 | * "2001:db8::1:0:0:1"
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| 100 | *
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| 101 | * It's important to note that an address can only be shortened ONE TIME!
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| 102 | * This is invalid: "2001:db8::1::1"
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| 103 | *
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| 104 | * *** The scope.
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| 105 | *
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| 106 | * Each address has a so called "scope" it is added to the end of the address,
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| 107 | * separated by a percent sign "%". If there is no scope at the end, it defaults
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| 108 | * to "0".
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| 109 | *
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| 110 | * So "2001:db8::1" is the same as "2001:db8::1%0".
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| 111 | *
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| 112 | * As in IPv6 all network interfaces can/should have the same address, the scope
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| 113 | * gives you the ability to choose on which interface the system should listen.
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| 114 | *
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| 115 | * AFAIK, the scope can be used with unicast as well as link local addresses, but
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| 116 | * it is mandatory with link local addresses (starting with fe80::).
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| 117 | *
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| 118 | * On Linux the default scope is the interface's name. On Windows it's just the index
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| 119 | * of the interface. Run "route print -6" in the shell, to see the interface's index
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| 120 | * on Winodows.
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| 121 | *
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| 122 | * All functions can deal with the scope, and DO NOT warn if you put garbage there.
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| 123 | *
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| 124 | * *** Port added to the IPv6 address
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| 125 | *
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| 126 | * There is only one way to add a port to an IPv6 address is to embed it in brackets:
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| 127 | *
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| 128 | * [2001:db8::1]:12345
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| 129 | *
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| 130 | * This gives you the address "2001:db8::1" and the port "12345".
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| 131 | *
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| 132 | * What also works, but is not recommended by rfc is to separate the port
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| 133 | * by a dot:
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| 134 | *
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| 135 | * 2001:db8::1.12345
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| 136 | *
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| 137 | * It even works with embedded IPv4 addresses.
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| 138 | *
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| 139 | * *** Special addresses and how they are written
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| 140 | *
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| 141 | * The following are notations to represent "special addresses".
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| 142 | *
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| 143 | * "::" IN6ADDR_ANY
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| 144 | * ":::123" IN6ADDR_ANY with port "123"
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| 145 | * "[::]:123" IN6ADDR_ANY with port "123"
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| 146 | * "[:::123]" -> NO. Not allowed and makes no sense
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| 147 | * "::1" -> address of the loopback device (127.0.0.1 in v4)
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| 148 | *
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| 149 | * On systems with dual sockets, one can use so called embedded IPv4 addresses:
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| 150 | *
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| 151 | * "::ffff:192.168.1.1" results in the IPv6 address "::ffff:c0a8:0101" as two octets
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| 152 | * of the IPv4 address will be converted to one hextet in the IPv6 address.
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| 153 | *
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| 154 | * The prefix of such addresses MUST BE "::ffff:", 10 bytes as zero and two bytes as 255.
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| 155 | *
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| 156 | * The so called IPv4-compatible IPv6 addresses are deprecated and no longer in use.
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| 157 | *
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| 158 | * *** Valid addresses and string
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| 159 | *
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| 160 | * If you use any of the IPv6 address functions, keep in mind, that those addresses
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| 161 | * are all returning "valid" even if the underlying system (e.g. VNC) doesn't like
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| 162 | * such strings.
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| 163 | *
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| 164 | * [2001:db8::1]
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| 165 | * [2001:db8::1]:12345
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| 166 | *
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| 167 | * and so on. So to make sure you only pass the underlying software a pure IPv6 address
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| 168 | * without any garbage, you should use the "outAddress" parameters to get a RFC compliant
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| 169 | * address returned.
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| 170 | *
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| 171 | * So after reading the above, you'll start using the functions and see a bool called
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| 172 | * "followRfc" which is true by default. This is what this bool does:
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| 173 | *
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| 174 | * The following addresses all represent the exact same address:
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| 175 | *
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| 176 | * 1 - 2001:db8::1
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| 177 | * 2 - 2001:db8:0::1
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| 178 | * 3 - 2001:0db8:0000:0000:0000:0000:0000:0001
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| 179 | * 4 - 2001:DB8::1
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| 180 | * 5 - [2001:db8::1]
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| 181 | * 6 - [2001:db8:0::1]
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| 182 | *
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| 183 | * According to RFC 5952, number two, three, four and six are invalid.
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| 184 | *
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| 185 | * #2 - because there is a single hextet that hasn't been shortened
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| 186 | *
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| 187 | * #3 - because there has nothing been shortened (hextets 3 to 7) and
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| 188 | * there are leading zeros in at least one hextet ("0db8")
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| 189 | *
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| 190 | * #4 - all characters in an IPv6 address have to be lower case
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| 191 | *
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| 192 | * #6 - same as two but included in brackets
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| 193 | *
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| 194 | * If you follow RFC, the above addresses are not converted and an
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| 195 | * error is returned. If you turn RFC off, you will get the expected
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| 196 | * representation of the address.
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| 197 | *
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| 198 | * It's a nice way to convert "weird" addresses to rfc compliant addresses
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| 199 | *
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| 200 | */
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| 201 |
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| 202 |
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| 203 | /**
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| 204 | * Parses any string and tests if it is an IPv6 Address
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| 205 | *
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| 206 | * This function should NOT be used directly. If you do, note
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| 207 | * that no security checks are done at the moment. This can change.
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| 208 | *
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| 209 | * @returns iprt sstatus code, yeah, right... This function most certainly DOES
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| 210 | * NOT RETURN ANY IPRT STATUS CODES. It's also a unreadable mess.
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| 211 | * @param pszAddress The strin that holds the IPv6 address
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| 212 | * @param addressLength The length of pszAddress
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| 213 | * @param pszAddressOut Returns a plain, full blown IPv6 address
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| 214 | * as a char array
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| 215 | * @param addressOutSize The size of pszAddressOut (length)
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| 216 | * @param pPortOut 32 bit unsigned integer, holding the port
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| 217 | * If pszAddress doesn't contain a port, it's 0
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| 218 | * @param pszScopeOut Returns the scope of the address, if none it's 0
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| 219 | * @param scopeOutSize sizeof(pszScopeOut)
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| 220 | * @param pBrackets returns true if the address was enclosed in brackets
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| 221 | * @param pEmbeddedV4 returns true if the address is an embedded IPv4 address
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| 222 | * @param followRfc if set to true, the function follows RFC (default)
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| 223 | */
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| 224 | 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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| 225 | {
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| 226 | /************************\
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| 227 | * Pointer Hell Ahead *
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| 228 | \************************/
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| 229 |
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| 230 | const char szIpV6AddressChars[] = "ABCDEF01234567890abcdef.:[]%"; // order IMPORTANT
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| 231 | const char szIpV4AddressChars[] = "01234567890.:[]"; // order IMPORTANT
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| 232 | const char szLinkLocalPrefix[] = "FfEe8800"; //
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| 233 | const char *pszIpV6AddressChars = NULL, *pszIpV4AddressChars = NULL, *pszLinkLocalPrefix = NULL;
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| 234 |
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| 235 | char *pszSourceAddress = NULL, *pszSourceAddressStart = NULL;
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| 236 | char *pszResultAddress = NULL, *pszResultAddressStart = NULL;
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| 237 | char *pszResultAddress4 = NULL, *pszResultAddress4Start = NULL;
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| 238 | char *pszResultPort = NULL, *pszResultPortStart = NULL;
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| 239 | char *pszInternalAddress = NULL, *pszInternalAddressStart = NULL;
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| 240 | char *pszInternalPort = NULL, *pszInternalPortStart = NULL;
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| 241 |
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| 242 | char *pStart = NULL, *pNow = NULL, *pNext = NULL, *pNowChar = NULL, *pIfId = NULL, *pIfIdEnd = NULL;
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| 243 | char *pNowDigit = NULL, *pFrom = NULL, *pTo = NULL, *pLast = NULL;
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| 244 | char *pGap = NULL, *pMisc = NULL, *pDotStart = NULL, *pFieldStart = NULL, *pFieldEnd = NULL;
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| 245 | char *pFieldStartLongest = NULL, *pBracketOpen = NULL, *pBracketClose = NULL;
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| 246 | char *pszRc = NULL;
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| 247 |
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| 248 | bool isLinkLocal = false;
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| 249 | char szDummy[4];
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| 250 |
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| 251 | uint8_t *pByte = NULL;
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| 252 | uint32_t byteOut = 0;
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| 253 | uint16_t returnValue = 0;
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| 254 | uint32_t colons = 0;
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| 255 | uint32_t colonsOverAll = 0;
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| 256 | uint32_t fieldLength = 0;
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| 257 | uint32_t dots = 0;
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| 258 | size_t gapSize = 0;
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| 259 | uint32_t intPortOut = 0;
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| 260 |
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| 261 | pszIpV4AddressChars = &szIpV4AddressChars[0];
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| 262 | pszIpV6AddressChars = &szIpV6AddressChars[6];
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| 263 | pszLinkLocalPrefix = &szLinkLocalPrefix[6];
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| 264 |
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| 265 | if (!followRfc)
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| 266 | pszIpV6AddressChars = &szIpV6AddressChars[0];
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| 267 |
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| 268 | if (addressLength<2)
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| 269 | returnValue = 711;
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| 270 |
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| 271 | pszResultAddressStart = (char *)RTMemTmpAlloc(34);
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| 272 | pszInternalAddressStart = (char *)RTMemTmpAlloc(34);
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| 273 | pszInternalPortStart = (char * )RTMemTmpAlloc(10);
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| 274 |
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| 275 | if (! (pszResultAddressStart && pszInternalAddressStart && pszInternalPortStart))
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| 276 | {
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| 277 | if (pszResultAddressStart)
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| 278 | RTMemTmpFree(pszResultAddressStart);
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| 279 |
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| 280 | if (pszInternalAddressStart)
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| 281 | RTMemTmpFree(pszInternalAddressStart);
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| 282 |
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| 283 | if (pszInternalPortStart)
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| 284 | RTMemTmpFree(pszInternalPortStart);
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| 285 |
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| 286 | return -701;
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| 287 | }
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| 288 |
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| 289 | memset(szDummy, '\0', 4);
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| 290 |
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| 291 | pszResultAddress = pszResultAddressStart;
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| 292 | memset(pszResultAddressStart, '\0', 34);
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| 293 |
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| 294 | pszInternalAddress = pszInternalAddressStart;
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| 295 | memset(pszInternalAddressStart, '\0' , 34);
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| 296 |
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| 297 | pszInternalPort = pszInternalPortStart;
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| 298 | memset(pszInternalPortStart, '\0', 10);
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| 299 |
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| 300 | pszSourceAddress = pszSourceAddressStart = (char *)pszAddress;
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| 301 |
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| 302 | pFrom = pTo = pStart = pLast = pszSourceAddressStart;
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| 303 |
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| 304 | while (*pszSourceAddress != '\0' && !returnValue)
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| 305 | {
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| 306 | pNow = NULL;
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| 307 | pNext = NULL;
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| 308 | pNowChar = NULL;
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| 309 | pNowDigit = NULL;
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| 310 |
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| 311 | pNow = pszSourceAddress;
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| 312 | pNext = pszSourceAddress + 1;
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| 313 |
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| 314 | if (!pFrom)
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| 315 | pFrom = pTo = pNow;
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| 316 |
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| 317 | pNowChar = (char *)memchr(pszIpV6AddressChars, *pNow, strlen(pszIpV6AddressChars));
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| 318 | pNowDigit = (char *)memchr(pszIpV6AddressChars, *pNow, strlen(pszIpV6AddressChars) - 5);
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| 319 |
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| 320 | if (pszResultPort)
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| 321 | {
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| 322 | if (pLast && (pszResultPort == pszSourceAddressStart))
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| 323 | {
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| 324 | if (*pLast == '\0')
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| 325 | returnValue = 721;
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| 326 |
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| 327 | pszResultPortStart = (char *)RTMemTmpAlloc(10);
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| 328 |
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| 329 | if (!pszResultPortStart)
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| 330 | returnValue = 702;
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| 331 |
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| 332 | memset(pszResultPortStart, '\0', 10);
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| 333 | pszResultPort = pszResultPortStart;
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| 334 | pszSourceAddress = pLast;
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| 335 | pMisc = pLast;
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| 336 | pLast = NULL;
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| 337 | continue;
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| 338 | }
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| 339 |
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| 340 | pNowDigit = NULL;
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| 341 | pNowDigit = (char *)memchr(pszIpV4AddressChars, *pNow, strlen(pszIpV4AddressChars) - 4);
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| 342 |
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| 343 | if (strlen(pszResultPortStart) == 5)
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| 344 | returnValue = 11;
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| 345 |
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| 346 | if (*pNow == '0' && pszResultPort == pszResultPortStart && *pNext != '\0' && (pNow - pMisc) < 5 )
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| 347 | {
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| 348 | pszSourceAddress++;
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| 349 | continue;
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| 350 | }
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| 351 |
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| 352 | if (pNowDigit)
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| 353 | {
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| 354 | *pszResultPort = *pNowDigit;
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| 355 | pszResultPort++;
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| 356 | pszSourceAddress++;
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| 357 | continue;
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| 358 | }
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| 359 | else
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| 360 | returnValue = 12;
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| 361 | }
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| 362 |
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| 363 | if (pszResultAddress4)
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| 364 | {
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| 365 | if (pszResultAddress4 == pszSourceAddressStart && pLast)
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| 366 | {
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| 367 | dots = 0;
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| 368 | pszResultAddress4 = NULL;
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| 369 | pszResultAddress4Start = NULL;
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| 370 | pszResultAddress4Start = (char *)RTMemTmpAlloc(20);
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| 371 |
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| 372 | if (!pszResultAddress4Start)
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| 373 | {
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| 374 | returnValue = 401;
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| 375 | break;
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| 376 | }
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| 377 |
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| 378 | memset(pszResultAddress4Start, '\0', 20);
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| 379 | pszResultAddress4 = pszResultAddress4Start;
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| 380 | pszSourceAddress = pLast;
|
|---|
| 381 | pFrom = pLast;
|
|---|
| 382 | pTo = pLast;
|
|---|
| 383 | pLast = NULL;
|
|---|
| 384 | continue;
|
|---|
| 385 | }
|
|---|
| 386 |
|
|---|
| 387 | pTo = pNow;
|
|---|
| 388 | pNowDigit = NULL;
|
|---|
| 389 | pNowDigit = (char *)memchr(pszIpV4AddressChars, *pNow, strlen(pszIpV4AddressChars) - 4);
|
|---|
| 390 |
|
|---|
| 391 | if (!pNowDigit && *pNow != '.' && *pNow != ']' && *pNow != ':' && *pNow != '%')
|
|---|
| 392 | returnValue = 412;
|
|---|
| 393 |
|
|---|
| 394 | if ((pNow - pFrom) > 3)
|
|---|
| 395 | {
|
|---|
| 396 | returnValue = 402;
|
|---|
| 397 | break;
|
|---|
| 398 | }
|
|---|
| 399 |
|
|---|
| 400 | if (pNowDigit && *pNext != '\0')
|
|---|
| 401 | {
|
|---|
| 402 | pszSourceAddress++;
|
|---|
| 403 | continue;
|
|---|
| 404 | }
|
|---|
| 405 |
|
|---|
| 406 | if (!pNowDigit && !pBracketOpen && (*pNext == '.' || *pNext == ']' || *pNext == ':'))
|
|---|
| 407 | returnValue = 411;
|
|---|
| 408 |
|
|---|
| 409 | memset(pszResultAddress4, '0', 3);
|
|---|
| 410 | pMisc = pszResultAddress4 + 2;
|
|---|
| 411 | pszResultAddress4 = pszResultAddress4 + 3;
|
|---|
| 412 |
|
|---|
| 413 | if (*pNow != '.' && !pNowDigit && strlen(pszResultAddress4Start) < 9)
|
|---|
| 414 | returnValue = 403;
|
|---|
| 415 |
|
|---|
| 416 | if ((pTo - pFrom) > 0)
|
|---|
| 417 | pTo--;
|
|---|
| 418 |
|
|---|
| 419 | dots++;
|
|---|
| 420 |
|
|---|
| 421 | while (pTo >= pFrom)
|
|---|
| 422 | {
|
|---|
| 423 | *pMisc = *pTo;
|
|---|
| 424 | pMisc--;
|
|---|
| 425 | pTo--;
|
|---|
| 426 | }
|
|---|
| 427 |
|
|---|
| 428 | if (dots == 4 && *pNow == '.')
|
|---|
| 429 | {
|
|---|
| 430 | if (!pBracketOpen)
|
|---|
| 431 | {
|
|---|
| 432 | pszResultPort = pszSourceAddressStart;
|
|---|
| 433 | pLast = pNext;
|
|---|
| 434 | }
|
|---|
| 435 | else
|
|---|
| 436 | {
|
|---|
| 437 | returnValue = 409;
|
|---|
| 438 | }
|
|---|
| 439 | }
|
|---|
| 440 |
|
|---|
| 441 | dots = 0;
|
|---|
| 442 |
|
|---|
| 443 | pFrom = pNext;
|
|---|
| 444 | pTo = pNext;
|
|---|
| 445 |
|
|---|
| 446 | if (strlen(pszResultAddress4Start) > 11)
|
|---|
| 447 | pszResultAddress4 = NULL;
|
|---|
| 448 |
|
|---|
| 449 | if ((*pNow == ':' || *pNow == '.') && strlen(pszResultAddress4Start) == 12)
|
|---|
| 450 | {
|
|---|
| 451 | pLast = pNext;
|
|---|
| 452 | pszResultPort = pszSourceAddressStart;
|
|---|
| 453 | }
|
|---|
| 454 |
|
|---|
| 455 | if (*pNow == '%')
|
|---|
| 456 | {
|
|---|
| 457 | pIfId = pNow;
|
|---|
| 458 | pLast = pNow;
|
|---|
| 459 | continue;
|
|---|
| 460 | }
|
|---|
| 461 | pszSourceAddress = pNext;
|
|---|
| 462 |
|
|---|
| 463 | if (*pNow != ']')
|
|---|
| 464 | continue;
|
|---|
| 465 |
|
|---|
| 466 | pFrom = pNow;
|
|---|
| 467 | pTo = pNow;
|
|---|
| 468 | }
|
|---|
| 469 |
|
|---|
| 470 | if (pIfId && (!pIfIdEnd))
|
|---|
| 471 | {
|
|---|
| 472 | if (*pIfId == '%' && pIfId == pLast && *pNext != '\0')
|
|---|
| 473 | {
|
|---|
| 474 | pFrom = pNext;
|
|---|
| 475 | pIfId = pNext;
|
|---|
| 476 | pLast = NULL;
|
|---|
| 477 |
|
|---|
| 478 | pszSourceAddress++;
|
|---|
| 479 | continue;
|
|---|
| 480 | }
|
|---|
| 481 |
|
|---|
| 482 | if (*pNow == '%' && pIfId <= pNow)
|
|---|
| 483 | {
|
|---|
| 484 | returnValue = 442;
|
|---|
| 485 | break;
|
|---|
| 486 | }
|
|---|
| 487 |
|
|---|
| 488 | if (*pNow != ']' && *pNext != '\0')
|
|---|
| 489 | {
|
|---|
| 490 | pTo = pNow;
|
|---|
| 491 | pszSourceAddress++;
|
|---|
| 492 | continue;
|
|---|
| 493 | }
|
|---|
| 494 |
|
|---|
| 495 | if (*pNow == ']')
|
|---|
| 496 | {
|
|---|
| 497 | pIfIdEnd = pNow - 1;
|
|---|
| 498 | pFrom = pNow;
|
|---|
| 499 | pTo = pNow;
|
|---|
| 500 | continue;
|
|---|
| 501 | }
|
|---|
| 502 | else
|
|---|
| 503 | {
|
|---|
| 504 | pIfIdEnd = pNow;
|
|---|
| 505 | pFrom = NULL;
|
|---|
| 506 | pTo = NULL;
|
|---|
| 507 | pszSourceAddress++;
|
|---|
| 508 | continue;
|
|---|
| 509 | }
|
|---|
| 510 | }
|
|---|
| 511 |
|
|---|
| 512 | if (!pNowChar)
|
|---|
| 513 | {
|
|---|
| 514 | returnValue = 254;
|
|---|
| 515 |
|
|---|
| 516 | if (followRfc)
|
|---|
| 517 | {
|
|---|
| 518 | pMisc = (char *)memchr(&szIpV6AddressChars[0], *pNow, strlen(&szIpV6AddressChars[0]));
|
|---|
| 519 |
|
|---|
| 520 | if (pMisc)
|
|---|
| 521 | returnValue = 253;
|
|---|
| 522 | }
|
|---|
| 523 | }
|
|---|
| 524 |
|
|---|
| 525 | if (strlen(pszResultAddressStart) > 32 && !pszResultAddress4Start)
|
|---|
| 526 | returnValue = 255;
|
|---|
| 527 |
|
|---|
| 528 | if (pNowDigit && *pNext != '\0' && colons == 0)
|
|---|
| 529 | {
|
|---|
| 530 | pTo = pNow;
|
|---|
| 531 | pszSourceAddress++;
|
|---|
| 532 | continue;
|
|---|
| 533 | }
|
|---|
| 534 |
|
|---|
| 535 | if (*pNow == ':' && *pNext != '\0')
|
|---|
| 536 | {
|
|---|
| 537 | colonsOverAll++;
|
|---|
| 538 | colons++;
|
|---|
| 539 | pszSourceAddress++;
|
|---|
| 540 | continue;
|
|---|
| 541 | }
|
|---|
| 542 |
|
|---|
| 543 | if (*pNow == ':' )
|
|---|
| 544 | {
|
|---|
| 545 | colons++;
|
|---|
| 546 | colonsOverAll++;
|
|---|
| 547 | }
|
|---|
| 548 |
|
|---|
| 549 | if (*pNow == '.')
|
|---|
| 550 | {
|
|---|
| 551 | pMisc = pNow;
|
|---|
| 552 |
|
|---|
| 553 | while (*pMisc != '\0' && *pMisc != ']')
|
|---|
| 554 | {
|
|---|
| 555 | if (*pMisc == '.')
|
|---|
| 556 | dots++;
|
|---|
| 557 |
|
|---|
| 558 | pMisc++;
|
|---|
| 559 | }
|
|---|
| 560 | }
|
|---|
| 561 |
|
|---|
| 562 | if (*pNow == ']')
|
|---|
| 563 | {
|
|---|
| 564 | if (pBracketClose)
|
|---|
| 565 | returnValue = 77;
|
|---|
| 566 |
|
|---|
| 567 | if (!pBracketOpen)
|
|---|
| 568 | returnValue = 22;
|
|---|
| 569 |
|
|---|
| 570 | if (*pNext == ':' || *pNext == '.')
|
|---|
| 571 | {
|
|---|
| 572 | pszResultPort = pszSourceAddressStart;
|
|---|
| 573 | pLast = pNext + 1;
|
|---|
| 574 | }
|
|---|
| 575 |
|
|---|
| 576 | if (pFrom == pNow)
|
|---|
| 577 | pFrom = NULL;
|
|---|
| 578 |
|
|---|
| 579 | pBracketClose = pNow;
|
|---|
| 580 | }
|
|---|
| 581 |
|
|---|
| 582 | if (*pNow == '[')
|
|---|
| 583 | {
|
|---|
| 584 | if (pBracketOpen)
|
|---|
| 585 | returnValue = 23;
|
|---|
| 586 |
|
|---|
| 587 | if (pStart != pNow)
|
|---|
| 588 | returnValue = 24;
|
|---|
| 589 |
|
|---|
| 590 | pBracketOpen = pNow;
|
|---|
| 591 | pStart++;
|
|---|
| 592 | pFrom++;
|
|---|
| 593 | pszSourceAddress++;
|
|---|
| 594 | continue;
|
|---|
| 595 | }
|
|---|
| 596 |
|
|---|
| 597 | if (*pNow == '%')
|
|---|
| 598 | {
|
|---|
| 599 | if (pIfId)
|
|---|
| 600 | returnValue = 441;
|
|---|
| 601 |
|
|---|
| 602 | pLast = pNext;
|
|---|
| 603 | pIfId = pNext;
|
|---|
| 604 | }
|
|---|
| 605 |
|
|---|
| 606 | if (colons > 0)
|
|---|
| 607 | {
|
|---|
| 608 | if (colons == 1)
|
|---|
| 609 | {
|
|---|
| 610 | if (pStart + 1 == pNow )
|
|---|
| 611 | returnValue = 31;
|
|---|
| 612 |
|
|---|
| 613 | if (*pNext == '\0' && !pNowDigit)
|
|---|
| 614 | returnValue = 32;
|
|---|
| 615 |
|
|---|
| 616 | pLast = pNow;
|
|---|
| 617 | }
|
|---|
| 618 |
|
|---|
| 619 | if (colons == 2)
|
|---|
| 620 | {
|
|---|
| 621 | if (pGap)
|
|---|
| 622 | returnValue = 33;
|
|---|
| 623 |
|
|---|
| 624 | pGap = pszResultAddress + 4;
|
|---|
| 625 |
|
|---|
| 626 | if (pStart + 1 == pNow || pStart + 2 == pNow)
|
|---|
| 627 | {
|
|---|
| 628 | pGap = pszResultAddressStart;
|
|---|
| 629 | pFrom = pNow;
|
|---|
| 630 | }
|
|---|
| 631 |
|
|---|
| 632 | if (*pNext == '\0' && !pNowDigit)
|
|---|
| 633 | pszSourceAddress++;
|
|---|
| 634 |
|
|---|
| 635 | if (*pNext != ':' && *pNext != '.')
|
|---|
| 636 | pLast = pNow;
|
|---|
| 637 | }
|
|---|
| 638 |
|
|---|
| 639 | if (colons == 3)
|
|---|
| 640 | {
|
|---|
| 641 | pFrom = pLast;
|
|---|
| 642 | pLast = pNow;
|
|---|
| 643 |
|
|---|
| 644 | if (*pNext == '\0' && !pNowDigit)
|
|---|
| 645 | returnValue = 34;
|
|---|
| 646 |
|
|---|
| 647 | if (pBracketOpen)
|
|---|
| 648 | returnValue = 35;
|
|---|
| 649 |
|
|---|
| 650 | if (pGap && followRfc)
|
|---|
| 651 | returnValue = 36;
|
|---|
| 652 |
|
|---|
| 653 | if (!pGap)
|
|---|
| 654 | pGap = pszResultAddress + 4;
|
|---|
| 655 |
|
|---|
| 656 | if (pStart + 3 == pNow)
|
|---|
| 657 | {
|
|---|
| 658 | pszResultPort = pszSourceAddressStart;
|
|---|
| 659 | pGap = pszResultAddress;
|
|---|
| 660 | pFrom = NULL;
|
|---|
| 661 | }
|
|---|
| 662 |
|
|---|
| 663 | if (pNowDigit)
|
|---|
| 664 | {
|
|---|
| 665 | pszResultPort = pszSourceAddressStart;
|
|---|
| 666 | }
|
|---|
| 667 | }
|
|---|
| 668 | }
|
|---|
| 669 | if (*pNext == '\0' && colons == 0 && !pIfIdEnd)
|
|---|
| 670 | {
|
|---|
| 671 | pFrom = pLast;
|
|---|
| 672 |
|
|---|
| 673 | if (pNowDigit)
|
|---|
| 674 | pTo = pNow;
|
|---|
| 675 |
|
|---|
| 676 | pLast = NULL;
|
|---|
| 677 | }
|
|---|
| 678 |
|
|---|
| 679 | if (dots > 0)
|
|---|
| 680 | {
|
|---|
| 681 | if (dots == 1)
|
|---|
| 682 | {
|
|---|
| 683 | pszResultPort = pszSourceAddressStart;
|
|---|
| 684 | pLast = pNext;
|
|---|
| 685 | }
|
|---|
| 686 |
|
|---|
| 687 | if (dots == 4 && pBracketOpen)
|
|---|
| 688 | returnValue = 601;
|
|---|
| 689 |
|
|---|
| 690 | if (dots == 3 || dots == 4)
|
|---|
| 691 | {
|
|---|
| 692 | pszResultAddress4 = pszSourceAddressStart;
|
|---|
| 693 | pLast = pFrom;
|
|---|
| 694 | pFrom = NULL;
|
|---|
| 695 | }
|
|---|
| 696 |
|
|---|
| 697 | if (dots > 4)
|
|---|
| 698 | returnValue = 603;
|
|---|
| 699 |
|
|---|
| 700 | dots = 0;
|
|---|
| 701 | }
|
|---|
| 702 |
|
|---|
| 703 | if (pFrom && pTo)
|
|---|
| 704 | {
|
|---|
| 705 | if (pTo - pFrom > 3)
|
|---|
| 706 | {
|
|---|
| 707 | returnValue = 51;
|
|---|
| 708 | break;
|
|---|
| 709 | }
|
|---|
| 710 |
|
|---|
| 711 | if (followRfc)
|
|---|
| 712 | {
|
|---|
| 713 | if ((pTo - pFrom > 0) && *pFrom == '0')
|
|---|
| 714 | returnValue = 101;
|
|---|
| 715 |
|
|---|
| 716 | if ((pTo - pFrom) == 0 && *pFrom == '0' && colons == 2)
|
|---|
| 717 | returnValue = 102;
|
|---|
| 718 |
|
|---|
| 719 | if ((pTo - pFrom) == 0 && *pFrom == '0' && pszResultAddress == pGap)
|
|---|
| 720 | returnValue = 103;
|
|---|
| 721 |
|
|---|
| 722 | if ((pTo - pFrom) == 0 && *pFrom == '0')
|
|---|
| 723 | {
|
|---|
| 724 | if (!pFieldStart)
|
|---|
| 725 | {
|
|---|
| 726 | pFieldStart = pszResultAddress;
|
|---|
| 727 | pFieldEnd = pszResultAddress + 4;
|
|---|
| 728 | }
|
|---|
| 729 | else
|
|---|
| 730 | {
|
|---|
| 731 | pFieldEnd = pFieldEnd + 4;
|
|---|
| 732 | }
|
|---|
| 733 | }
|
|---|
| 734 | else
|
|---|
| 735 | {
|
|---|
| 736 | if ((size_t)(pFieldEnd - pFieldStart) > fieldLength)
|
|---|
| 737 | {
|
|---|
| 738 | fieldLength = pFieldEnd - pFieldStart;
|
|---|
| 739 | pFieldStartLongest = pFieldStart;
|
|---|
| 740 | }
|
|---|
| 741 |
|
|---|
| 742 | pFieldStart = NULL;
|
|---|
| 743 | pFieldEnd = NULL;
|
|---|
| 744 | }
|
|---|
| 745 | }
|
|---|
| 746 | if (!(pGap == pszResultAddressStart && (size_t)(pNow - pStart) == colons))
|
|---|
| 747 | {
|
|---|
| 748 | memset(pszResultAddress, '0', 4);
|
|---|
| 749 | pMisc = pszResultAddress + 3;
|
|---|
| 750 | pszResultAddress = pszResultAddress + 4;
|
|---|
| 751 |
|
|---|
| 752 | if (pFrom == pStart && (pTo - pFrom) == 3)
|
|---|
| 753 | {
|
|---|
| 754 | isLinkLocal = true;
|
|---|
| 755 |
|
|---|
| 756 | while (pTo >= pFrom)
|
|---|
| 757 | {
|
|---|
| 758 | *pMisc = *pTo;
|
|---|
| 759 |
|
|---|
| 760 | if (*pTo != *pszLinkLocalPrefix && *pTo != *(pszLinkLocalPrefix + 1))
|
|---|
| 761 | isLinkLocal = false;
|
|---|
| 762 |
|
|---|
| 763 | pTo--;
|
|---|
| 764 | pMisc--;
|
|---|
| 765 | pszLinkLocalPrefix = pszLinkLocalPrefix - 2;
|
|---|
| 766 | }
|
|---|
| 767 | }
|
|---|
| 768 | else
|
|---|
| 769 | {
|
|---|
| 770 | while (pTo >= pFrom)
|
|---|
| 771 | {
|
|---|
| 772 | *pMisc = *pTo;
|
|---|
| 773 | pMisc--;
|
|---|
| 774 | pTo--;
|
|---|
| 775 | }
|
|---|
| 776 | }
|
|---|
| 777 | }
|
|---|
| 778 |
|
|---|
| 779 | pFrom = pNow;
|
|---|
| 780 | pTo = pNow;
|
|---|
| 781 |
|
|---|
| 782 | }
|
|---|
| 783 | if (*pNext == '\0' && colons == 0)
|
|---|
| 784 | pszSourceAddress++;
|
|---|
| 785 |
|
|---|
| 786 | if (*pNext == '\0' && !pBracketClose && !pszResultPort)
|
|---|
| 787 | pTo = pNext;
|
|---|
| 788 |
|
|---|
| 789 | colons = 0;
|
|---|
| 790 | } // end of loop
|
|---|
| 791 |
|
|---|
| 792 | if (!returnValue && colonsOverAll < 2)
|
|---|
| 793 | returnValue = 252;
|
|---|
| 794 |
|
|---|
| 795 | if (!returnValue && (pBracketOpen && !pBracketClose))
|
|---|
| 796 | returnValue = 25;
|
|---|
| 797 |
|
|---|
| 798 | if (!returnValue && pGap)
|
|---|
| 799 | {
|
|---|
| 800 | gapSize = 32 - strlen(pszResultAddressStart);
|
|---|
| 801 |
|
|---|
| 802 | if (followRfc)
|
|---|
| 803 | {
|
|---|
| 804 | if (gapSize < 5)
|
|---|
| 805 | returnValue = 104;
|
|---|
| 806 |
|
|---|
| 807 | if (fieldLength > gapSize)
|
|---|
| 808 | returnValue = 105;
|
|---|
| 809 |
|
|---|
| 810 | if (fieldLength == gapSize && pFieldStartLongest < pGap)
|
|---|
| 811 | returnValue = 106;
|
|---|
| 812 | }
|
|---|
| 813 |
|
|---|
| 814 | pszResultAddress = pszResultAddressStart;
|
|---|
| 815 | pszInternalAddress = pszInternalAddressStart;
|
|---|
| 816 |
|
|---|
| 817 | if (!returnValue && pszResultAddress4Start)
|
|---|
| 818 | {
|
|---|
| 819 | if (strlen(pszResultAddressStart) > 4)
|
|---|
| 820 | returnValue = 405;
|
|---|
| 821 |
|
|---|
| 822 | pszResultAddress = pszResultAddressStart;
|
|---|
| 823 |
|
|---|
| 824 | if (pGap != pszResultAddressStart)
|
|---|
| 825 | returnValue = 407;
|
|---|
| 826 |
|
|---|
| 827 | memset(pszInternalAddressStart, '0', 20);
|
|---|
| 828 | pszInternalAddress = pszInternalAddressStart + 20;
|
|---|
| 829 |
|
|---|
| 830 | for (int i = 0; i < 4; i++)
|
|---|
| 831 | {
|
|---|
| 832 | if (*pszResultAddress != 'f' && *pszResultAddress != 'F')
|
|---|
| 833 | {
|
|---|
| 834 | returnValue = 406;
|
|---|
| 835 | break;
|
|---|
| 836 | }
|
|---|
| 837 |
|
|---|
| 838 | *pszInternalAddress = *pszResultAddress;
|
|---|
| 839 | pszResultAddress++;
|
|---|
| 840 | pszInternalAddress++;
|
|---|
| 841 | }
|
|---|
| 842 | pszResultAddress4 = pszResultAddress4Start;
|
|---|
| 843 |
|
|---|
| 844 | for (int i = 0; i<4; i++)
|
|---|
| 845 | {
|
|---|
| 846 | memcpy(szDummy, pszResultAddress4, 3);
|
|---|
| 847 |
|
|---|
| 848 | int rc = RTStrToUInt32Ex((const char *)&szDummy[0], NULL, 16, &byteOut);
|
|---|
| 849 |
|
|---|
| 850 | if (rc == 0 && byteOut < 256)
|
|---|
| 851 | {
|
|---|
| 852 | RTStrPrintf(szDummy, 3, "%02x", byteOut);
|
|---|
| 853 | memcpy(pszInternalAddress, szDummy, 2);
|
|---|
| 854 | pszInternalAddress = pszInternalAddress + 2;
|
|---|
| 855 | pszResultAddress4 = pszResultAddress4 + 3;
|
|---|
| 856 | memset(szDummy, '\0', 4);
|
|---|
| 857 | }
|
|---|
| 858 | else
|
|---|
| 859 | {
|
|---|
| 860 | returnValue = 499;
|
|---|
| 861 | }
|
|---|
| 862 | }
|
|---|
| 863 | }
|
|---|
| 864 | else
|
|---|
| 865 | {
|
|---|
| 866 | while (!returnValue && pszResultAddress != pGap)
|
|---|
| 867 | {
|
|---|
| 868 | *pszInternalAddress = *pszResultAddress;
|
|---|
| 869 | pszResultAddress++;
|
|---|
| 870 | pszInternalAddress++;
|
|---|
| 871 | }
|
|---|
| 872 |
|
|---|
| 873 | memset(pszInternalAddress, '0', gapSize);
|
|---|
| 874 | pszInternalAddress = pszInternalAddress + gapSize;
|
|---|
| 875 |
|
|---|
| 876 | while (!returnValue && *pszResultAddress != '\0')
|
|---|
| 877 | {
|
|---|
| 878 | *pszInternalAddress = *pszResultAddress;
|
|---|
| 879 | pszResultAddress++;
|
|---|
| 880 | pszInternalAddress++;
|
|---|
| 881 | }
|
|---|
| 882 | }
|
|---|
| 883 | }
|
|---|
| 884 | else
|
|---|
| 885 | {
|
|---|
| 886 | if (!returnValue)
|
|---|
| 887 | {
|
|---|
| 888 | if (strlen(pszResultAddressStart) != 32)
|
|---|
| 889 | returnValue = 111;
|
|---|
| 890 |
|
|---|
| 891 | if (followRfc)
|
|---|
| 892 | {
|
|---|
| 893 | if (fieldLength > 4)
|
|---|
| 894 | returnValue = 112;
|
|---|
| 895 | }
|
|---|
| 896 |
|
|---|
| 897 | memcpy(pszInternalAddressStart, pszResultAddressStart, strlen(pszResultAddressStart));
|
|---|
| 898 | }
|
|---|
| 899 | }
|
|---|
| 900 |
|
|---|
| 901 | if (pszResultPortStart)
|
|---|
| 902 | {
|
|---|
| 903 | if (strlen(pszResultPortStart) > 0 && strlen(pszResultPortStart) < 6)
|
|---|
| 904 | {
|
|---|
| 905 | memcpy(pszInternalPortStart, pszResultPortStart, strlen(pszResultPortStart));
|
|---|
| 906 |
|
|---|
| 907 | intPortOut = 0;
|
|---|
| 908 | int rc = RTStrToUInt32Ex(pszInternalPortStart, NULL, 10, &intPortOut);
|
|---|
| 909 |
|
|---|
| 910 | if (rc == 0)
|
|---|
| 911 | {
|
|---|
| 912 | if (!(intPortOut > 0 && intPortOut < 65536))
|
|---|
| 913 | intPortOut = 0;
|
|---|
| 914 | }
|
|---|
| 915 | else
|
|---|
| 916 | {
|
|---|
| 917 | returnValue = 888;
|
|---|
| 918 | }
|
|---|
| 919 | }
|
|---|
| 920 | else
|
|---|
| 921 | {
|
|---|
| 922 | returnValue = 889;
|
|---|
| 923 | }
|
|---|
| 924 | }
|
|---|
| 925 |
|
|---|
| 926 | /*
|
|---|
| 927 | full blown address 32 bytes, no colons -> pszInternalAddressStart
|
|---|
| 928 | port as string -> pszResultPortStart
|
|---|
| 929 | port as binary integer -> intPortOut
|
|---|
| 930 | interface id in pIfId and pIfIdEnd
|
|---|
| 931 |
|
|---|
| 932 | Now fill the out parameters.
|
|---|
| 933 |
|
|---|
| 934 | */
|
|---|
| 935 |
|
|---|
| 936 | if (!returnValue && pszAddressOut)
|
|---|
| 937 | {
|
|---|
| 938 | if (strlen(pszInternalAddressStart) < addressOutSize)
|
|---|
| 939 | {
|
|---|
| 940 | pszRc = NULL;
|
|---|
| 941 | pszRc = (char *)memset(pszAddressOut, '\0', addressOutSize);
|
|---|
| 942 |
|
|---|
| 943 | if (!pszRc)
|
|---|
| 944 | returnValue = 910;
|
|---|
| 945 |
|
|---|
| 946 | pszRc = NULL;
|
|---|
| 947 |
|
|---|
| 948 | pszRc = (char *)memcpy(pszAddressOut, pszInternalAddressStart, strlen(pszInternalAddressStart));
|
|---|
| 949 |
|
|---|
| 950 | if (!pszRc)
|
|---|
| 951 | returnValue = 911;
|
|---|
| 952 | }
|
|---|
| 953 | else
|
|---|
| 954 | {
|
|---|
| 955 | returnValue = 912;
|
|---|
| 956 | }
|
|---|
| 957 | }
|
|---|
| 958 |
|
|---|
| 959 | if (!returnValue && pPortOut)
|
|---|
| 960 | {
|
|---|
| 961 | *pPortOut = intPortOut;
|
|---|
| 962 | }
|
|---|
| 963 |
|
|---|
| 964 | if (!returnValue && pszIfIdOut)
|
|---|
| 965 | {
|
|---|
| 966 | if (pIfIdEnd && pIfId)
|
|---|
| 967 | {
|
|---|
| 968 | if ((size_t)(pIfIdEnd - pIfId) + 1 < ifIdOutSize)
|
|---|
| 969 | {
|
|---|
| 970 | pszRc = NULL;
|
|---|
| 971 | pszRc = (char *)memset(pszIfIdOut, '\0', ifIdOutSize);
|
|---|
| 972 |
|
|---|
| 973 | if (!pszRc)
|
|---|
| 974 | returnValue = 913;
|
|---|
| 975 |
|
|---|
| 976 | pszRc = NULL;
|
|---|
| 977 | pszRc = (char *)memcpy(pszIfIdOut, pIfId, (pIfIdEnd - pIfId) + 1);
|
|---|
| 978 |
|
|---|
| 979 | if (!pszRc)
|
|---|
| 980 | returnValue = 914;
|
|---|
| 981 | }
|
|---|
| 982 | else
|
|---|
| 983 | {
|
|---|
| 984 | returnValue = 915;
|
|---|
| 985 | }
|
|---|
| 986 | }
|
|---|
| 987 | else
|
|---|
| 988 | {
|
|---|
| 989 | pszRc = NULL;
|
|---|
| 990 | pszRc = (char *)memset(pszIfIdOut, '\0', ifIdOutSize);
|
|---|
| 991 |
|
|---|
| 992 | if (!pszRc)
|
|---|
| 993 | returnValue = 916;
|
|---|
| 994 | }
|
|---|
| 995 | // temporary hack
|
|---|
| 996 | if (isLinkLocal && (strlen(pszIfIdOut) < 1))
|
|---|
| 997 | {
|
|---|
| 998 | memset(pszIfIdOut, '\0', ifIdOutSize);
|
|---|
| 999 | *pszIfIdOut = '%';
|
|---|
| 1000 | pszIfIdOut++;
|
|---|
| 1001 | *pszIfIdOut = '0';
|
|---|
| 1002 | pszIfIdOut++;
|
|---|
| 1003 | }
|
|---|
| 1004 | }
|
|---|
| 1005 |
|
|---|
| 1006 | if (pBracketOpen && pBracketClose && pBrackets)
|
|---|
| 1007 | *pBrackets = true;
|
|---|
| 1008 |
|
|---|
| 1009 | if (pEmbeddedV4 && pszResultAddress4Start)
|
|---|
| 1010 | *pEmbeddedV4 = true;
|
|---|
| 1011 |
|
|---|
| 1012 | if (pszResultAddressStart)
|
|---|
| 1013 | RTMemTmpFree(pszResultAddressStart);
|
|---|
| 1014 |
|
|---|
| 1015 | if (pszResultPortStart)
|
|---|
| 1016 | RTMemTmpFree(pszResultPortStart);
|
|---|
| 1017 |
|
|---|
| 1018 | if (pszResultAddress4Start)
|
|---|
| 1019 | RTMemTmpFree(pszResultAddress4Start);
|
|---|
| 1020 |
|
|---|
| 1021 | if (pszInternalAddressStart)
|
|---|
| 1022 | RTMemTmpFree(pszInternalAddressStart);
|
|---|
| 1023 |
|
|---|
| 1024 | if (pszInternalPortStart)
|
|---|
| 1025 | RTMemTmpFree(pszInternalPortStart);
|
|---|
| 1026 |
|
|---|
| 1027 | return (uint32_t)(returnValue - (returnValue * 2)); // make it negative...
|
|---|
| 1028 | }
|
|---|
| 1029 |
|
|---|
| 1030 | /**
|
|---|
| 1031 | * Takes a string and returns a RFC compliant string of the address
|
|---|
| 1032 | * This function SHOULD NOT be used directly. It expects a 33 byte
|
|---|
| 1033 | * char array with a full blown IPv6 address without separators.
|
|---|
| 1034 | *
|
|---|
| 1035 | * @returns iprt status code.
|
|---|
| 1036 | * @param psz The string to convert
|
|---|
| 1037 | * @param pszAddrOut The char[] that will hold the result
|
|---|
| 1038 | * @param addOutSize The size of the char[] from above.
|
|---|
| 1039 | * @param pszPortOut char[] for the text representation of the port
|
|---|
| 1040 | * @param portOutSize sizeof(pszPortOut);
|
|---|
| 1041 | */
|
|---|
| 1042 | DECLHIDDEN(int) rtStrToIpAddr6Str(const char *psz, char *pszAddrOut, size_t addrOutSize, char *pszPortOut, size_t portOutSize, bool followRfc)
|
|---|
| 1043 | {
|
|---|
| 1044 | char *pStart = NULL;
|
|---|
| 1045 | char *pGapStart = NULL;
|
|---|
| 1046 | char *pGapEnd = NULL;
|
|---|
| 1047 | char *pGapTStart = NULL;
|
|---|
| 1048 | char *pGapTEnd = NULL;
|
|---|
| 1049 | char *pCurrent = NULL;
|
|---|
| 1050 | char *pOut = NULL;
|
|---|
| 1051 |
|
|---|
| 1052 | if (!psz || !pszAddrOut)
|
|---|
| 1053 | return VERR_NOT_SUPPORTED;
|
|---|
| 1054 |
|
|---|
| 1055 | if (addrOutSize < 40)
|
|---|
| 1056 | return VERR_NOT_SUPPORTED;
|
|---|
| 1057 |
|
|---|
| 1058 | pStart = (char *)psz;
|
|---|
| 1059 | pCurrent = (char *)psz;
|
|---|
| 1060 | pGapStart = (char *)psz;
|
|---|
| 1061 | pGapEnd = (char *)psz;
|
|---|
| 1062 |
|
|---|
| 1063 | while (*pCurrent != '\0')
|
|---|
| 1064 | {
|
|---|
| 1065 | if (*pCurrent != '0')
|
|---|
| 1066 | pGapTStart = NULL;
|
|---|
| 1067 |
|
|---|
| 1068 | if ((pCurrent - pStart) % 4 == 0) // ok, start of a hextet
|
|---|
| 1069 | {
|
|---|
| 1070 | if (*pCurrent == '0' && !pGapTStart)
|
|---|
| 1071 | pGapTStart = pCurrent;
|
|---|
| 1072 | }
|
|---|
| 1073 |
|
|---|
| 1074 | if ((pCurrent - pStart) % 4 == 3)
|
|---|
| 1075 | {
|
|---|
| 1076 | if (*pCurrent == '0' && pGapTStart)
|
|---|
| 1077 | pGapTEnd = pCurrent;
|
|---|
| 1078 |
|
|---|
| 1079 | if (pGapTStart && pGapTEnd)
|
|---|
| 1080 | {
|
|---|
| 1081 | pGapTEnd = pCurrent;
|
|---|
| 1082 |
|
|---|
| 1083 | if ((pGapTEnd - pGapTStart) > (pGapEnd - pGapStart))
|
|---|
| 1084 | {
|
|---|
| 1085 | pGapEnd = pGapTEnd;
|
|---|
| 1086 | pGapStart = pGapTStart;
|
|---|
| 1087 | }
|
|---|
| 1088 | }
|
|---|
| 1089 | }
|
|---|
| 1090 |
|
|---|
| 1091 | pCurrent++;
|
|---|
| 1092 | }
|
|---|
| 1093 |
|
|---|
| 1094 | pCurrent = (char *)psz;
|
|---|
| 1095 | pStart = (char *)psz;
|
|---|
| 1096 | pOut = (char *)pszAddrOut;
|
|---|
| 1097 |
|
|---|
| 1098 | while (*pCurrent != '\0')
|
|---|
| 1099 | {
|
|---|
| 1100 | if (*pCurrent != '0')
|
|---|
| 1101 | pGapTStart = NULL;
|
|---|
| 1102 |
|
|---|
| 1103 | if (!pGapTStart)
|
|---|
| 1104 | {
|
|---|
| 1105 | *pOut = *pCurrent;
|
|---|
| 1106 | pOut++;
|
|---|
| 1107 | }
|
|---|
| 1108 |
|
|---|
| 1109 | if ((pCurrent - pStart) % 4 == 3)
|
|---|
| 1110 | {
|
|---|
| 1111 | if (pGapTStart && *pCurrent == '0')
|
|---|
| 1112 | {
|
|---|
| 1113 | *pOut = *pCurrent;
|
|---|
| 1114 | pOut++;
|
|---|
| 1115 | }
|
|---|
| 1116 |
|
|---|
| 1117 | if (*(pCurrent + 1) != '\0')
|
|---|
| 1118 | {
|
|---|
| 1119 | *pOut = ':';
|
|---|
| 1120 | pOut++;
|
|---|
| 1121 | }
|
|---|
| 1122 |
|
|---|
| 1123 | pGapTStart = pCurrent + 1;
|
|---|
| 1124 | }
|
|---|
| 1125 |
|
|---|
| 1126 | if ((pCurrent + 1) == pGapStart && (pGapEnd - pGapStart) > 3)
|
|---|
| 1127 | {
|
|---|
| 1128 | *pOut = ':';
|
|---|
| 1129 | pOut++;
|
|---|
| 1130 | pCurrent = pGapEnd;
|
|---|
| 1131 | }
|
|---|
| 1132 |
|
|---|
| 1133 | pCurrent++;
|
|---|
| 1134 | }
|
|---|
| 1135 |
|
|---|
| 1136 | return VINF_SUCCESS;
|
|---|
| 1137 | }
|
|---|
| 1138 |
|
|---|
| 1139 |
|
|---|
| 1140 | /**
|
|---|
| 1141 | * Tests if the given string is a valid IPv6 address.
|
|---|
| 1142 | *
|
|---|
| 1143 | * @returns 0 if valid, some random number if not. THIS IS NOT AN IPRT STATUS!
|
|---|
| 1144 | * @param psz The string to test
|
|---|
| 1145 | * @param pszResultAddress plain address, optional read "valid addresses
|
|---|
| 1146 | * and strings" above.
|
|---|
| 1147 | * @param resultAddressSize size of pszResultAddress
|
|---|
| 1148 | * @param addressOnly return only the plain address (no scope)
|
|---|
| 1149 | * Ignored, and will always return the if id
|
|---|
| 1150 | */
|
|---|
| 1151 | static int rtNetIpv6CheckAddrStr(const char *psz, char *pszResultAddress, size_t resultAddressSize, bool addressOnly, bool followRfc)
|
|---|
| 1152 | {
|
|---|
| 1153 | int rc;
|
|---|
| 1154 | int rc2;
|
|---|
| 1155 | int returnValue = VERR_NOT_SUPPORTED; /* gcc want's this initialized, I understand its confusion. */
|
|---|
| 1156 |
|
|---|
| 1157 | char *p = NULL, *pl = NULL;
|
|---|
| 1158 |
|
|---|
| 1159 | size_t memAllocMaxSize = RT_MAX(strlen(psz), resultAddressSize) + 40;
|
|---|
| 1160 |
|
|---|
| 1161 | char *pszAddressOutLocal = (char *)RTMemTmpAlloc(memAllocMaxSize);
|
|---|
| 1162 | char *pszIfIdOutLocal = (char *)RTMemTmpAlloc(memAllocMaxSize);
|
|---|
| 1163 | char *pszAddressRfcOutLocal = (char *)RTMemTmpAlloc(memAllocMaxSize);
|
|---|
| 1164 |
|
|---|
| 1165 | if (!pszAddressOutLocal || !pszIfIdOutLocal || !pszAddressRfcOutLocal)
|
|---|
| 1166 | return VERR_NO_TMP_MEMORY;
|
|---|
| 1167 |
|
|---|
| 1168 | memset(pszAddressOutLocal, '\0', memAllocMaxSize);
|
|---|
| 1169 | memset(pszIfIdOutLocal, '\0', memAllocMaxSize);
|
|---|
| 1170 | memset(pszAddressRfcOutLocal, '\0', memAllocMaxSize);
|
|---|
| 1171 |
|
|---|
| 1172 | rc = rtStrParseAddrStr6(psz, strlen(psz), pszAddressOutLocal, memAllocMaxSize, NULL, pszIfIdOutLocal, memAllocMaxSize, NULL, NULL, followRfc);
|
|---|
| 1173 |
|
|---|
| 1174 | if (rc == 0)
|
|---|
| 1175 | returnValue = VINF_SUCCESS;
|
|---|
| 1176 |
|
|---|
| 1177 | if (rc == 0 && pszResultAddress)
|
|---|
| 1178 | {
|
|---|
| 1179 | // convert the 32 characters to a valid, shortened ipv6 address
|
|---|
| 1180 |
|
|---|
| 1181 | rc2 = rtStrToIpAddr6Str((const char *)pszAddressOutLocal, pszAddressRfcOutLocal, memAllocMaxSize, NULL, 0, followRfc);
|
|---|
| 1182 |
|
|---|
| 1183 | if (rc2 != 0)
|
|---|
| 1184 | returnValue = 951;
|
|---|
| 1185 |
|
|---|
| 1186 | // this is a temporary solution
|
|---|
| 1187 | if (!returnValue && strlen(pszIfIdOutLocal) > 0) // the if identifier is copied over _ALWAYS_ && !addressOnly)
|
|---|
| 1188 | {
|
|---|
| 1189 | p = pszAddressRfcOutLocal + strlen(pszAddressRfcOutLocal);
|
|---|
| 1190 |
|
|---|
| 1191 | *p = '%';
|
|---|
| 1192 |
|
|---|
| 1193 | p++;
|
|---|
| 1194 |
|
|---|
| 1195 | pl = (char *)memcpy(p, pszIfIdOutLocal, strlen(pszIfIdOutLocal));
|
|---|
| 1196 |
|
|---|
| 1197 | if (!pl)
|
|---|
| 1198 | returnValue = VERR_NOT_SUPPORTED;
|
|---|
| 1199 | }
|
|---|
| 1200 |
|
|---|
| 1201 | pl = NULL;
|
|---|
| 1202 |
|
|---|
| 1203 | pl = (char *)memcpy(pszResultAddress, pszAddressRfcOutLocal, strlen(pszAddressRfcOutLocal));
|
|---|
| 1204 |
|
|---|
| 1205 | if (!pl)
|
|---|
| 1206 | returnValue = VERR_NOT_SUPPORTED;
|
|---|
| 1207 | }
|
|---|
| 1208 |
|
|---|
| 1209 | if (rc != 0)
|
|---|
| 1210 | returnValue = VERR_NOT_SUPPORTED;
|
|---|
| 1211 |
|
|---|
| 1212 | if (pszAddressOutLocal)
|
|---|
| 1213 | RTMemTmpFree(pszAddressOutLocal);
|
|---|
| 1214 |
|
|---|
| 1215 | if (pszAddressRfcOutLocal)
|
|---|
| 1216 | RTMemTmpFree(pszAddressRfcOutLocal);
|
|---|
| 1217 |
|
|---|
| 1218 | if (pszIfIdOutLocal)
|
|---|
| 1219 | RTMemTmpFree(pszIfIdOutLocal);
|
|---|
| 1220 |
|
|---|
| 1221 | return returnValue;
|
|---|
| 1222 |
|
|---|
| 1223 | }
|
|---|
