rvaddress.c

基于h323协议的软phone

}

RvChar *RvAddressIpv6ToString(RvChar *buf, RvSize_t bufsize, const RvUint8 *ip)
{
#if defined(RV_NULLCHECK)
	if((buf == NULL) || (ip == NULL))
		return NULL;
#endif
	return Rv_inet_ntop6(ip, buf, bufsize);
}

RvBool RvAddressStringToIpv6(RvUint8 *ip, const RvChar *buf)
{
#if defined(RV_NULLCHECK)
	if((ip == NULL) || (buf == NULL))
		return RV_FALSE;
#endif
	return Rv_inet_pton6(buf, ip);
}

const RvAddressIpv6 *RvAddressGetIpv6(const RvAddress *addr)
{
#if defined(RV_NULLCHECK)
	if(addr == NULL)
		return NULL;
#endif
#if defined(RV_OTHERCHECK)
	if(addr->addrtype != RV_ADDRESS_TYPE_IPV6)
		return NULL;
#endif
	
	return &addr->data.ipv6;
}

RvAddressIpv6 *RvAddressIpv6Construct(RvAddressIpv6 *addr, const RvUint8 *ip, RvUint16 port)
{
#if defined(RV_NULLCHECK)
	if((addr == NULL) || (ip == NULL))
		return NULL;
#endif

	memcpy(addr->ip, ip, RV_ADDRESS_IPV6_ADDRSIZE);
	addr->port = port;
	return addr;
}

RvBool RvAddressIpv6Compare(const RvAddressIpv6 *addr1, const RvAddressIpv6 *addr2, RvInt comparetype)
{
#if defined(RV_NULLCHECK)
	if((addr1 == NULL) || (addr2 == NULL))
		return RV_FALSE;
#endif
#if defined(RV_RANGECHECK)
	if((comparetype != RV_ADDRESS_FULLADDRESS) && (comparetype != RV_ADDRESS_BASEADDRESS))
		return RV_FALSE;
#endif

	/* Check base IP address. */
	if(memcmp(addr1->ip,addr2->ip, RV_ADDRESS_IPV6_ADDRSIZE) != 0)
		return RV_FALSE;

	/* Check full address, which means the port too. */
	if((comparetype == RV_ADDRESS_FULLADDRESS) && (addr1->port != addr2->port))
		return RV_FALSE;

	return RV_TRUE;
}

RvChar *RvAddressIpv6GetString(const RvAddressIpv6 *addr, RvChar *buf, RvSize_t bufsize)
{
#if defined(RV_NULLCHECK)
	if((addr == NULL) || (buf == NULL))
		return RV_FALSE;
#endif

	return Rv_inet_ntop6(addr->ip, buf, bufsize);
}

RvAddressIpv6 *RvAddressIpv6SetString(RvAddressIpv6 *addr, const RvChar *buf)
{
#if defined(RV_NULLCHECK)
	if((addr == NULL) || (buf == NULL))
		return NULL;
#endif

	if(Rv_inet_pton6(buf, addr->ip) == RV_FALSE)
		return NULL;
	return addr;
}

const RvUint8 *RvAddressIpv6GetIp(const RvAddressIpv6 *addr)
{
#if defined(RV_NULLCHECK)
	if(addr == NULL)
		return NULL;
#endif

	return addr->ip;
}

RvAddressIpv6 *RvAddressIpv6SetIp(RvAddressIpv6 *addr, const RvUint8 *ip)
{
#if defined(RV_NULLCHECK)
	if(addr == NULL)
		return NULL;
#endif

	memcpy(addr->ip, ip, RV_ADDRESS_IPV6_ADDRSIZE);
	return addr;
}

RvUint16 RvAddressIpv6GetPort(const RvAddressIpv6 *addr)
{
#if defined(RV_NULLCHECK)
	if(addr == NULL)
		return RvUint16Const(0);
#endif

	return addr->port;
}

RvAddressIpv6 *RvAddressIpv6SetPort(RvAddressIpv6 *addr, RvUint16 port)
{
#if defined(RV_NULLCHECK)
	if(addr == NULL)
		return NULL;
#endif

	addr->port = port;
	return addr;
}

RvBool RvAddressIpv6IsMulticast(const RvAddressIpv6 *addr)
{
#if defined(RV_NULLCHECK)
	if(addr == NULL)
		return RV_FALSE;
#endif

	if(addr->ip[0] == RvUint8Const(0xFF))
		return RV_TRUE;
	return RV_FALSE;
}

/*********************************************************************************/
/* The software in this section is from the Internet Software Consortium */
/* with only minor changes: */

/*
 * Copyright (c) 1996-1999 by 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.
 */

/* const char *
 * inet_ntop4(src, dst, size)
 *	format an IPv4 address
 * return:
 *	`dst' (as a const)
 * notes:
 *	(1) uses no statics
 *	(2) takes a u_char* not an in_addr as input
 * author:
 *	Paul Vixie, 1996.
 */
static RvChar *Rv_inet_ntop4(const RvUint8 *src, RvChar *dst, RvSize_t size)
{
	RvChar tmp[sizeof "255.255.255.255"];

	RvSprintf(tmp, "%u.%u.%u.%u", src[0], src[1], src[2], src[3]);
	if (strlen(tmp) >= size)
		return (NULL);
	strcpy(dst, tmp);
	return (dst);
}

/* const char *
 * inet_ntop6(src, dst, size)
 *	convert IPv6 binary address into presentation (printable) format
 * author:
 *	Paul Vixie, 1996.
 */
static RvChar *Rv_inet_ntop6(const RvUint8 *src, RvChar *dst, RvSize_t size)
{
	/*
	 * 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.
	 */
	RvChar tmp[sizeof "ffff:ffff:ffff:ffff:ffff:ffff:255.255.255.255"], *tp;
	struct { RvInt base, len; } best, cur;
	RvUint words[RV_ADDRESS_IPV6_ADDRSIZE / 2];
	RvInt i;

	/*
	 * Preprocess:
	 *	Copy the input (bytewise) array into a wordwise array.
	 *	Find the longest run of 0x00's in src[] for :: shorthanding.
	 */
	memset(words, '\0', sizeof words);
	for (i = 0; i < RV_ADDRESS_IPV6_ADDRSIZE; i++)
		words[i / 2] |= (src[i] << ((1 - (i % 2)) << 3));
	best.base = -1;
	best.len = 0;
	cur.base = -1;
	cur.len = 0;
	for (i = 0; i < (RV_ADDRESS_IPV6_ADDRSIZE / 2); i++) {
		if (words[i] == 0) {
			if (cur.base == -1)
				cur.base = i, cur.len = 1;
			else
				cur.len++;
		} else {
			if (cur.base != -1) {
				if (best.base == -1 || cur.len > best.len)
					best = cur;
				cur.base = -1;
			}
		}
	}
	if (cur.base != -1) {
		if (best.base == -1 || cur.len > best.len)
			best = cur;
	}
	if (best.base != -1 && best.len < 2)
		best.base = -1;

	/*
	 * Format the result.
	 */
	tp = tmp;
	for (i = 0; i < (RV_ADDRESS_IPV6_ADDRSIZE / 2); i++) {
		/* Are we inside the best run of 0x00's? */
		if (best.base != -1 && i >= best.base &&
			  i < (best.base + best.len)) {
			if (i == best.base)
				*tp++ = ':';
			continue;
		}
		/* Are we following an initial run of 0x00s or any real hex? */
		if (i != 0)
			*tp++ = ':';
		/* Is this address an encapsulated IPv4? */
		if (i == 6 && best.base == 0 &&
			  (best.len == 6 || (best.len == 5 && words[5] == 0xffff))) {
			if (Rv_inet_ntop4(src+12, tp, (RvSize_t)(sizeof tmp - (tp - tmp))) == RV_FALSE)
				return (NULL);
			tp += strlen(tp);
			break;
		}
		RvSprintf(tp, "%x", words[i]);
		tp += strlen(tp);
	}
	/* Was it a trailing run of 0x00's? */
	if (best.base != -1 && (best.base + best.len) == 
		  (RV_ADDRESS_IPV6_ADDRSIZE / 2))
		*tp++ = ':';
	*tp++ = '\0';

	/*
	 * Check for overflow, copy, and we're done.
	 */
	if ((size_t)(tp - tmp) > size)
		return (NULL);
	strcpy(dst, tmp);
	return (dst);
}

/* int
 * inet_pton4(src, dst)
 *	like inet_aton() but without all the hexadecimal and shorthand.
 * return:
 *	1 if `src' is a valid dotted quad, else 0.
 * notice:
 *	does not touch `dst' unless it's returning 1.
 * author:
 *	Paul Vixie, 1996.
 */
static RvBool Rv_inet_pton4(const RvChar *src, RvUint8 *dst)
{
	static RvChar digits[] = "0123456789";
	RvInt saw_digit, octets, ch;
	RvUint8 tmp[RV_ADDRESS_IPV4_ADDRSIZE], *tp;

	saw_digit = 0;
	octets = 0;
	*(tp = tmp) = 0;
	while ((ch = *src++) != '\0') {
		RvChar *pch;

		if ((pch = strchr(digits, ch)) != NULL) {
			RvUint new = *tp * 10 + (pch - digits);

			if (new > 255)
				return RV_FALSE;
			*tp = (RvUint8)new;
			if (! saw_digit) {
				if (++octets > 4)
					return RV_FALSE;
				saw_digit = 1;
			}
		} else if (ch == '.' && saw_digit) {
			if (octets == 4)
				return RV_FALSE;
			*++tp = 0;
			saw_digit = 0;
		} else
			return RV_FALSE;
	}
	if (octets < 4)
		return RV_FALSE;
	memcpy(dst, tmp, RV_ADDRESS_IPV4_ADDRSIZE);
	return RV_TRUE;
}

/* int
 * inet_pton6(src, dst)
 *	convert presentation level address to network order binary form.
 * return:
 *	1 if `src' is a valid [RFC1884 2.2] address, else 0.
 * notice:
 *	(1) does not touch `dst' unless it's returning 1.
 *	(2) :: in a full address is silently ignored.
 * credit:
 *	inspired by Mark Andrews.
 * author:
 *	Paul Vixie, 1996.
 */
static RvBool Rv_inet_pton6(const RvChar *src, RvUint8 *dst)
{
	static RvChar xdigits_l[] = "0123456789abcdef",
	xdigits_u[] = "0123456789ABCDEF";
	RvUint8 tmp[RV_ADDRESS_IPV6_ADDRSIZE], *tp, *endp, *colonp;
	RvChar *xdigits;
	const RvChar *curtok;
	RvInt ch, saw_xdigit;
	RvUint val;

	memset((tp = tmp), '\0', RV_ADDRESS_IPV6_ADDRSIZE);
	endp = tp + RV_ADDRESS_IPV6_ADDRSIZE;
	colonp = NULL;
	/* Leading :: requires some special handling. */
	if (*src == ':')