6c648dd642
This is actually a fully functional build except: * All internal shared libraries are static linked to make sure there is no interference with ports (and to reduce build time). * It does not have the python/perl/etc plugin or API support. * By default, it installs as "svnlite" rather than "svn". * If WITH_SVN added in make.conf, you get "svn". * If WITHOUT_SVNLITE is in make.conf, this is completely disabled. To be absolutely clear, this is not intended for any use other than checking out freebsd source and committing, like we once did with cvs. It should be usable for small scale local repositories that don't need the python/perl plugin architecture.
244 lines
6.2 KiB
C
244 lines
6.2 KiB
C
/* Copyright (c) 1996 by Internet Software Consortium.
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS
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* ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE
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* CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL
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* DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR
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* PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
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* ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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* SOFTWARE.
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*/
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#include "apr_private.h"
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#include "apr_arch_networkio.h"
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#include "apr_strings.h"
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#if APR_HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#if APR_HAVE_SYS_SOCKET_H
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#include <sys/socket.h>
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#endif
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#if APR_HAVE_NETINET_IN_H
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#include <netinet/in.h>
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#endif
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#if APR_HAVE_ARPA_INET_H
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#include <arpa/inet.h>
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#endif
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#include <string.h>
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#if APR_HAVE_ERRNO_H
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#include <errno.h>
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#endif
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#include <stdio.h>
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#ifndef IN6ADDRSZ
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#define IN6ADDRSZ 16
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#endif
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#ifndef INT16SZ
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#define INT16SZ sizeof(apr_int16_t)
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#endif
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#ifndef __P
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#define __P(x) x
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#endif
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#if !defined(EAFNOSUPPORT) && defined(WSAEAFNOSUPPORT)
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#define EAFNOSUPPORT WSAEAFNOSUPPORT
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#endif
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/*
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* WARNING: Don't even consider trying to compile this on a system where
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* sizeof(int) < 4. sizeof(int) > 4 is fine; all the world's not a VAX.
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*/
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static const char *inet_ntop4 __P((const unsigned char *src, char *dst, apr_size_t size));
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#if APR_HAVE_IPV6
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static const char *inet_ntop6 __P((const unsigned char *src, char *dst, apr_size_t size));
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#endif
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/* char *
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* inet_ntop(af, src, dst, size)
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* convert a network format address to presentation format.
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* return:
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* pointer to presentation format address (`dst'), or NULL (see errno).
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* author:
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* Paul Vixie, 1996.
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*/
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const char *
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apr_inet_ntop(int af, const void *src, char *dst, apr_size_t size)
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{
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switch (af) {
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case AF_INET:
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return (inet_ntop4(src, dst, size));
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#if APR_HAVE_IPV6
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case AF_INET6:
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return (inet_ntop6(src, dst, size));
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#endif
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default:
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errno = EAFNOSUPPORT;
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return (NULL);
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}
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/* NOTREACHED */
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}
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/* const char *
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* inet_ntop4(src, dst, size)
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* format an IPv4 address, more or less like inet_ntoa()
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* return:
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* `dst' (as a const)
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* notes:
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* (1) uses no statics
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* (2) takes a u_char* not an in_addr as input
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* author:
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* Paul Vixie, 1996.
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*/
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static const char *
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inet_ntop4(const unsigned char *src, char *dst, apr_size_t size)
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{
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const apr_size_t MIN_SIZE = 16; /* space for 255.255.255.255\0 */
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int n = 0;
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char *next = dst;
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if (size < MIN_SIZE) {
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errno = ENOSPC;
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return NULL;
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}
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do {
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unsigned char u = *src++;
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if (u > 99) {
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*next++ = '0' + u/100;
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u %= 100;
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*next++ = '0' + u/10;
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u %= 10;
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}
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else if (u > 9) {
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*next++ = '0' + u/10;
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u %= 10;
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}
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*next++ = '0' + u;
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*next++ = '.';
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n++;
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} while (n < 4);
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*--next = 0;
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return dst;
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}
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#if APR_HAVE_IPV6
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/* const char *
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* inet_ntop6(src, dst, size)
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* convert IPv6 binary address into presentation (printable) format
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* author:
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* Paul Vixie, 1996.
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*/
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static const char *
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inet_ntop6(const unsigned char *src, char *dst, apr_size_t size)
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{
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/*
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* Note that int32_t and int16_t need only be "at least" large enough
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* to contain a value of the specified size. On some systems, like
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* Crays, there is no such thing as an integer variable with 16 bits.
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* Keep this in mind if you think this function should have been coded
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* to use pointer overlays. All the world's not a VAX.
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*/
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char tmp[sizeof "ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255"], *tp;
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struct { int base, len; } best = {-1, 0}, cur = {-1, 0};
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unsigned int words[IN6ADDRSZ / INT16SZ];
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int i;
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const unsigned char *next_src, *src_end;
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unsigned int *next_dest;
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/*
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* Preprocess:
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* Copy the input (bytewise) array into a wordwise array.
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* Find the longest run of 0x00's in src[] for :: shorthanding.
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*/
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next_src = src;
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src_end = src + IN6ADDRSZ;
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next_dest = words;
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i = 0;
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do {
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unsigned int next_word = (unsigned int)*next_src++;
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next_word <<= 8;
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next_word |= (unsigned int)*next_src++;
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*next_dest++ = next_word;
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if (next_word == 0) {
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if (cur.base == -1) {
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cur.base = i;
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cur.len = 1;
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}
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else {
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cur.len++;
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}
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} else {
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if (cur.base != -1) {
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if (best.base == -1 || cur.len > best.len) {
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best = cur;
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}
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cur.base = -1;
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}
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}
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i++;
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} while (next_src < src_end);
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if (cur.base != -1) {
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if (best.base == -1 || cur.len > best.len) {
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best = cur;
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}
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}
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if (best.base != -1 && best.len < 2) {
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best.base = -1;
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}
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/*
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* Format the result.
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*/
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tp = tmp;
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for (i = 0; i < (IN6ADDRSZ / INT16SZ);) {
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/* Are we inside the best run of 0x00's? */
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if (i == best.base) {
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*tp++ = ':';
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i += best.len;
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continue;
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}
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/* Are we following an initial run of 0x00s or any real hex? */
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if (i != 0) {
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*tp++ = ':';
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}
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/* Is this address an encapsulated IPv4? */
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if (i == 6 && best.base == 0 &&
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(best.len == 6 || (best.len == 5 && words[5] == 0xffff))) {
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if (!inet_ntop4(src+12, tp, sizeof tmp - (tp - tmp))) {
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return (NULL);
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}
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tp += strlen(tp);
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break;
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}
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tp += apr_snprintf(tp, sizeof tmp - (tp - tmp), "%x", words[i]);
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i++;
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}
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/* Was it a trailing run of 0x00's? */
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if (best.base != -1 && (best.base + best.len) == (IN6ADDRSZ / INT16SZ)) {
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*tp++ = ':';
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}
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*tp++ = '\0';
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/*
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* Check for overflow, copy, and we're done.
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*/
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if ((apr_size_t)(tp - tmp) > size) {
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errno = ENOSPC;
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return (NULL);
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}
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strcpy(dst, tmp);
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return (dst);
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}
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#endif
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