2005-05-27 04:56:25 +08:00
|
|
|
/*
|
|
|
|
* Copyright (C) 1996-2001 Internet Software Consortium.
|
|
|
|
*
|
|
|
|
* Permission to use, copy, modify, and distribute this software for any
|
|
|
|
* purpose with or without fee is hereby granted, provided that the above
|
|
|
|
* copyright notice and this permission notice appear in all copies.
|
|
|
|
*
|
|
|
|
* THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM
|
|
|
|
* DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
|
|
|
|
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
|
|
|
|
* INTERNET SOFTWARE CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT,
|
|
|
|
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING
|
|
|
|
* FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
|
|
|
|
* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
|
|
|
|
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
|
|
|
|
*/
|
2004-04-26 15:20:11 +08:00
|
|
|
/*
|
|
|
|
* Original code by Paul Vixie. "curlified" by Gisle Vanem.
|
|
|
|
*/
|
|
|
|
|
2013-01-07 02:06:49 +08:00
|
|
|
#include "curl_setup.h"
|
2004-04-26 15:20:11 +08:00
|
|
|
|
|
|
|
#ifndef HAVE_INET_NTOP
|
|
|
|
|
|
|
|
#ifdef HAVE_SYS_PARAM_H
|
|
|
|
#include <sys/param.h>
|
|
|
|
#endif
|
|
|
|
#ifdef HAVE_NETINET_IN_H
|
|
|
|
#include <netinet/in.h>
|
|
|
|
#endif
|
|
|
|
#ifdef HAVE_ARPA_INET_H
|
|
|
|
#include <arpa/inet.h>
|
|
|
|
#endif
|
|
|
|
|
2004-06-24 19:54:11 +08:00
|
|
|
#define _MPRINTF_REPLACE /* use our functions only */
|
|
|
|
#include <curl/mprintf.h>
|
|
|
|
|
2013-01-04 09:50:28 +08:00
|
|
|
#include "inet_ntop.h"
|
2004-04-26 15:20:11 +08:00
|
|
|
|
2004-10-06 15:50:18 +08:00
|
|
|
#define IN6ADDRSZ 16
|
|
|
|
#define INADDRSZ 4
|
|
|
|
#define INT16SZ 2
|
2004-04-26 15:20:11 +08:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Format an IPv4 address, more or less like inet_ntoa().
|
|
|
|
*
|
|
|
|
* Returns `dst' (as a const)
|
|
|
|
* Note:
|
|
|
|
* - uses no statics
|
2005-12-09 06:59:58 +08:00
|
|
|
* - takes a unsigned char* not an in_addr as input
|
2004-04-26 15:20:11 +08:00
|
|
|
*/
|
2005-12-09 06:59:58 +08:00
|
|
|
static char *inet_ntop4 (const unsigned char *src, char *dst, size_t size)
|
2004-04-26 15:20:11 +08:00
|
|
|
{
|
2008-09-24 03:17:19 +08:00
|
|
|
char tmp[sizeof "255.255.255.255"];
|
|
|
|
size_t len;
|
2007-08-23 22:30:24 +08:00
|
|
|
|
2008-09-24 03:17:19 +08:00
|
|
|
DEBUGASSERT(size >= 16);
|
2005-03-16 05:00:46 +08:00
|
|
|
|
2008-09-24 03:17:19 +08:00
|
|
|
tmp[0] = '\0';
|
|
|
|
(void)snprintf(tmp, sizeof(tmp), "%d.%d.%d.%d",
|
|
|
|
((int)((unsigned char)src[0])) & 0xff,
|
|
|
|
((int)((unsigned char)src[1])) & 0xff,
|
|
|
|
((int)((unsigned char)src[2])) & 0xff,
|
|
|
|
((int)((unsigned char)src[3])) & 0xff);
|
2004-04-26 15:20:11 +08:00
|
|
|
|
2008-09-24 03:17:19 +08:00
|
|
|
len = strlen(tmp);
|
2011-04-20 21:17:42 +08:00
|
|
|
if(len == 0 || len >= size) {
|
2004-04-26 15:20:11 +08:00
|
|
|
SET_ERRNO(ENOSPC);
|
|
|
|
return (NULL);
|
|
|
|
}
|
2008-09-24 03:17:19 +08:00
|
|
|
strcpy(dst, tmp);
|
|
|
|
return dst;
|
2004-04-26 15:20:11 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
#ifdef ENABLE_IPV6
|
|
|
|
/*
|
|
|
|
* Convert IPv6 binary address into presentation (printable) format.
|
|
|
|
*/
|
2005-12-09 06:59:58 +08:00
|
|
|
static char *inet_ntop6 (const unsigned char *src, char *dst, size_t size)
|
2004-04-26 15:20:11 +08:00
|
|
|
{
|
|
|
|
/*
|
|
|
|
* Note that int32_t and int16_t need only be "at least" large enough
|
|
|
|
* to contain a value of the specified size. On some systems, like
|
|
|
|
* Crays, there is no such thing as an integer variable with 16 bits.
|
|
|
|
* Keep this in mind if you think this function should have been coded
|
|
|
|
* to use pointer overlays. All the world's not a VAX.
|
|
|
|
*/
|
2006-08-04 10:49:04 +08:00
|
|
|
char tmp[sizeof("ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255")];
|
2004-04-26 15:20:11 +08:00
|
|
|
char *tp;
|
|
|
|
struct {
|
|
|
|
long base;
|
|
|
|
long len;
|
|
|
|
} best, cur;
|
2006-08-04 10:49:04 +08:00
|
|
|
unsigned long words[IN6ADDRSZ / INT16SZ];
|
|
|
|
int i;
|
2004-04-26 15:20:11 +08:00
|
|
|
|
|
|
|
/* Preprocess:
|
|
|
|
* Copy the input (bytewise) array into a wordwise array.
|
|
|
|
* Find the longest run of 0x00's in src[] for :: shorthanding.
|
|
|
|
*/
|
2006-08-05 01:35:05 +08:00
|
|
|
memset(words, '\0', sizeof(words));
|
2011-04-20 21:17:42 +08:00
|
|
|
for(i = 0; i < IN6ADDRSZ; i++)
|
|
|
|
words[i/2] |= (src[i] << ((1 - (i % 2)) << 3));
|
2004-04-26 15:20:11 +08:00
|
|
|
|
|
|
|
best.base = -1;
|
|
|
|
cur.base = -1;
|
2006-08-04 10:49:04 +08:00
|
|
|
best.len = 0;
|
|
|
|
cur.len = 0;
|
|
|
|
|
2011-04-20 21:17:42 +08:00
|
|
|
for(i = 0; i < (IN6ADDRSZ / INT16SZ); i++) {
|
|
|
|
if(words[i] == 0) {
|
2007-11-07 17:21:35 +08:00
|
|
|
if(cur.base == -1)
|
2004-04-26 15:20:11 +08:00
|
|
|
cur.base = i, cur.len = 1;
|
|
|
|
else
|
|
|
|
cur.len++;
|
|
|
|
}
|
2011-04-20 21:17:42 +08:00
|
|
|
else if(cur.base != -1) {
|
2007-11-07 17:21:35 +08:00
|
|
|
if(best.base == -1 || cur.len > best.len)
|
2011-04-20 21:17:42 +08:00
|
|
|
best = cur;
|
2004-04-26 15:20:11 +08:00
|
|
|
cur.base = -1;
|
|
|
|
}
|
|
|
|
}
|
2007-11-07 17:21:35 +08:00
|
|
|
if((cur.base != -1) && (best.base == -1 || cur.len > best.len))
|
2011-04-20 21:17:42 +08:00
|
|
|
best = cur;
|
2007-11-07 17:21:35 +08:00
|
|
|
if(best.base != -1 && best.len < 2)
|
2011-04-20 21:17:42 +08:00
|
|
|
best.base = -1;
|
|
|
|
/* Format the result. */
|
2004-04-26 15:20:11 +08:00
|
|
|
tp = tmp;
|
2011-04-20 21:17:42 +08:00
|
|
|
for(i = 0; i < (IN6ADDRSZ / INT16SZ); i++) {
|
|
|
|
/* Are we inside the best run of 0x00's? */
|
|
|
|
if(best.base != -1 && i >= best.base && i < (best.base + best.len)) {
|
2007-11-07 17:21:35 +08:00
|
|
|
if(i == best.base)
|
2011-04-20 21:17:42 +08:00
|
|
|
*tp++ = ':';
|
2004-04-26 15:20:11 +08:00
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Are we following an initial run of 0x00s or any real hex?
|
|
|
|
*/
|
2007-11-07 17:21:35 +08:00
|
|
|
if(i != 0)
|
2011-04-20 21:17:42 +08:00
|
|
|
*tp++ = ':';
|
2004-04-26 15:20:11 +08:00
|
|
|
|
|
|
|
/* Is this address an encapsulated IPv4?
|
|
|
|
*/
|
2007-11-07 17:21:35 +08:00
|
|
|
if(i == 6 && best.base == 0 &&
|
2011-04-20 21:17:42 +08:00
|
|
|
(best.len == 6 || (best.len == 5 && words[5] == 0xffff))) {
|
|
|
|
if(!inet_ntop4(src+12, tp, sizeof(tmp) - (tp - tmp))) {
|
2004-04-26 15:20:11 +08:00
|
|
|
SET_ERRNO(ENOSPC);
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
tp += strlen(tp);
|
|
|
|
break;
|
|
|
|
}
|
2004-06-24 23:15:27 +08:00
|
|
|
tp += snprintf(tp, 5, "%lx", words[i]);
|
2004-04-26 15:20:11 +08:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Was it a trailing run of 0x00's?
|
|
|
|
*/
|
2007-11-07 17:21:35 +08:00
|
|
|
if(best.base != -1 && (best.base + best.len) == (IN6ADDRSZ / INT16SZ))
|
2004-04-26 15:20:11 +08:00
|
|
|
*tp++ = ':';
|
|
|
|
*tp++ = '\0';
|
|
|
|
|
|
|
|
/* Check for overflow, copy, and we're done.
|
|
|
|
*/
|
2011-04-20 21:17:42 +08:00
|
|
|
if((size_t)(tp - tmp) > size) {
|
2004-04-26 15:20:11 +08:00
|
|
|
SET_ERRNO(ENOSPC);
|
|
|
|
return (NULL);
|
|
|
|
}
|
2008-09-24 03:17:19 +08:00
|
|
|
strcpy(dst, tmp);
|
|
|
|
return dst;
|
2004-04-26 15:20:11 +08:00
|
|
|
}
|
|
|
|
#endif /* ENABLE_IPV6 */
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Convert a network format address to presentation format.
|
|
|
|
*
|
2007-02-16 02:44:32 +08:00
|
|
|
* Returns pointer to presentation format address (`buf').
|
|
|
|
* Returns NULL on error and errno set with the specific
|
|
|
|
* error, EAFNOSUPPORT or ENOSPC.
|
|
|
|
*
|
|
|
|
* On Windows we store the error in the thread errno, not
|
2011-04-19 21:54:13 +08:00
|
|
|
* in the winsock error code. This is to avoid losing the
|
2007-02-16 02:44:32 +08:00
|
|
|
* actual last winsock error. So use macro ERRNO to fetch the
|
2011-04-19 21:54:13 +08:00
|
|
|
* errno this function sets when returning NULL, not SOCKERRNO.
|
2004-04-26 15:20:11 +08:00
|
|
|
*/
|
2005-03-16 10:25:12 +08:00
|
|
|
char *Curl_inet_ntop(int af, const void *src, char *buf, size_t size)
|
2004-04-26 15:20:11 +08:00
|
|
|
{
|
|
|
|
switch (af) {
|
|
|
|
case AF_INET:
|
2005-12-09 06:59:58 +08:00
|
|
|
return inet_ntop4((const unsigned char*)src, buf, size);
|
2004-04-26 15:20:11 +08:00
|
|
|
#ifdef ENABLE_IPV6
|
|
|
|
case AF_INET6:
|
2005-12-09 06:59:58 +08:00
|
|
|
return inet_ntop6((const unsigned char*)src, buf, size);
|
2004-04-26 15:20:11 +08:00
|
|
|
#endif
|
|
|
|
default:
|
|
|
|
SET_ERRNO(EAFNOSUPPORT);
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#endif /* HAVE_INET_NTOP */
|