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freebsd-dev/crypto/heimdal/lib/krb5/addr_families.c

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/*
* Copyright (c) 1997-2001 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "krb5_locl.h"
RCSID("$Id: addr_families.c,v 1.32 2001/09/03 19:53:51 assar Exp $");
struct addr_operations {
int af;
krb5_address_type atype;
size_t max_sockaddr_size;
krb5_error_code (*sockaddr2addr)(const struct sockaddr *, krb5_address *);
krb5_error_code (*sockaddr2port)(const struct sockaddr *, int16_t *);
void (*addr2sockaddr)(const krb5_address *, struct sockaddr *,
int *sa_size, int port);
void (*h_addr2sockaddr)(const char *, struct sockaddr *, int *, int);
krb5_error_code (*h_addr2addr)(const char *, krb5_address *);
krb5_boolean (*uninteresting)(const struct sockaddr *);
void (*anyaddr)(struct sockaddr *, int *, int);
int (*print_addr)(const krb5_address *, char *, size_t);
int (*parse_addr)(krb5_context, const char*, krb5_address *);
int (*order_addr)(krb5_context, const krb5_address*, const krb5_address*);
int (*free_addr)(krb5_context, krb5_address*);
int (*copy_addr)(krb5_context, const krb5_address*, krb5_address*);
};
/*
* AF_INET - aka IPv4 implementation
*/
static krb5_error_code
ipv4_sockaddr2addr (const struct sockaddr *sa, krb5_address *a)
{
const struct sockaddr_in *sin = (const struct sockaddr_in *)sa;
unsigned char buf[4];
a->addr_type = KRB5_ADDRESS_INET;
memcpy (buf, &sin->sin_addr, 4);
return krb5_data_copy(&a->address, buf, 4);
}
static krb5_error_code
ipv4_sockaddr2port (const struct sockaddr *sa, int16_t *port)
{
const struct sockaddr_in *sin = (const struct sockaddr_in *)sa;
*port = sin->sin_port;
return 0;
}
static void
ipv4_addr2sockaddr (const krb5_address *a,
struct sockaddr *sa,
int *sa_size,
int port)
{
struct sockaddr_in *sin = (struct sockaddr_in *)sa;
memset (sin, 0, sizeof(*sin));
sin->sin_family = AF_INET;
memcpy (&sin->sin_addr, a->address.data, 4);
sin->sin_port = port;
*sa_size = sizeof(*sin);
}
static void
ipv4_h_addr2sockaddr(const char *addr,
struct sockaddr *sa, int *sa_size, int port)
{
struct sockaddr_in *sin = (struct sockaddr_in *)sa;
memset (sin, 0, sizeof(*sin));
*sa_size = sizeof(*sin);
sin->sin_family = AF_INET;
sin->sin_port = port;
sin->sin_addr = *((const struct in_addr *)addr);
}
static krb5_error_code
ipv4_h_addr2addr (const char *addr,
krb5_address *a)
{
unsigned char buf[4];
a->addr_type = KRB5_ADDRESS_INET;
memcpy(buf, addr, 4);
return krb5_data_copy(&a->address, buf, 4);
}
/*
* Are there any addresses that should be considered `uninteresting'?
*/
static krb5_boolean
ipv4_uninteresting (const struct sockaddr *sa)
{
const struct sockaddr_in *sin = (const struct sockaddr_in *)sa;
if (sin->sin_addr.s_addr == INADDR_ANY)
return TRUE;
return FALSE;
}
static void
ipv4_anyaddr (struct sockaddr *sa, int *sa_size, int port)
{
struct sockaddr_in *sin = (struct sockaddr_in *)sa;
memset (sin, 0, sizeof(*sin));
*sa_size = sizeof(*sin);
sin->sin_family = AF_INET;
sin->sin_port = port;
sin->sin_addr.s_addr = INADDR_ANY;
}
static int
ipv4_print_addr (const krb5_address *addr, char *str, size_t len)
{
struct in_addr ia;
memcpy (&ia, addr->address.data, 4);
return snprintf (str, len, "IPv4:%s", inet_ntoa(ia));
}
static int
ipv4_parse_addr (krb5_context context, const char *address, krb5_address *addr)
{
const char *p;
struct in_addr a;
p = strchr(address, ':');
if(p) {
p++;
if(strncasecmp(address, "ip:", p - address) != 0 &&
strncasecmp(address, "ip4:", p - address) != 0 &&
strncasecmp(address, "ipv4:", p - address) != 0 &&
strncasecmp(address, "inet:", p - address) != 0)
return -1;
} else
p = address;
#ifdef HAVE_INET_ATON
if(inet_aton(p, &a) == 0)
return -1;
#elif defined(HAVE_INET_ADDR)
a.s_addr = inet_addr(p);
if(a.s_addr == INADDR_NONE)
return -1;
#else
return -1;
#endif
addr->addr_type = KRB5_ADDRESS_INET;
if(krb5_data_alloc(&addr->address, 4) != 0)
return -1;
_krb5_put_int(addr->address.data, ntohl(a.s_addr), addr->address.length);
return 0;
}
/*
* AF_INET6 - aka IPv6 implementation
*/
#ifdef HAVE_IPV6
static krb5_error_code
ipv6_sockaddr2addr (const struct sockaddr *sa, krb5_address *a)
{
const struct sockaddr_in6 *sin6 = (const struct sockaddr_in6 *)sa;
if (IN6_IS_ADDR_V4MAPPED(&sin6->sin6_addr)) {
unsigned char buf[4];
a->addr_type = KRB5_ADDRESS_INET;
#ifndef IN6_ADDR_V6_TO_V4
#ifdef IN6_EXTRACT_V4ADDR
#define IN6_ADDR_V6_TO_V4(x) (&IN6_EXTRACT_V4ADDR(x))
#else
#define IN6_ADDR_V6_TO_V4(x) ((const struct in_addr *)&(x)->s6_addr[12])
#endif
#endif
memcpy (buf, IN6_ADDR_V6_TO_V4(&sin6->sin6_addr), 4);
return krb5_data_copy(&a->address, buf, 4);
} else {
a->addr_type = KRB5_ADDRESS_INET6;
return krb5_data_copy(&a->address,
&sin6->sin6_addr,
sizeof(sin6->sin6_addr));
}
}
static krb5_error_code
ipv6_sockaddr2port (const struct sockaddr *sa, int16_t *port)
{
const struct sockaddr_in6 *sin6 = (const struct sockaddr_in6 *)sa;
*port = sin6->sin6_port;
return 0;
}
static void
ipv6_addr2sockaddr (const krb5_address *a,
struct sockaddr *sa,
int *sa_size,
int port)
{
struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sa;
memset (sin6, 0, sizeof(*sin6));
sin6->sin6_family = AF_INET6;
memcpy (&sin6->sin6_addr, a->address.data, sizeof(sin6->sin6_addr));
sin6->sin6_port = port;
*sa_size = sizeof(*sin6);
}
static void
ipv6_h_addr2sockaddr(const char *addr,
struct sockaddr *sa,
int *sa_size,
int port)
{
struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sa;
memset (sin6, 0, sizeof(*sin6));
*sa_size = sizeof(*sin6);
sin6->sin6_family = AF_INET6;
sin6->sin6_port = port;
sin6->sin6_addr = *((const struct in6_addr *)addr);
}
static krb5_error_code
ipv6_h_addr2addr (const char *addr,
krb5_address *a)
{
a->addr_type = KRB5_ADDRESS_INET6;
return krb5_data_copy(&a->address, addr, sizeof(struct in6_addr));
}
/*
*
*/
static krb5_boolean
ipv6_uninteresting (const struct sockaddr *sa)
{
const struct sockaddr_in6 *sin6 = (const struct sockaddr_in6 *)sa;
const struct in6_addr *in6 = (const struct in6_addr *)&sin6->sin6_addr;
return
IN6_IS_ADDR_LINKLOCAL(in6)
|| IN6_IS_ADDR_V4COMPAT(in6);
}
static void
ipv6_anyaddr (struct sockaddr *sa, int *sa_size, int port)
{
struct sockaddr_in6 *sin6 = (struct sockaddr_in6 *)sa;
memset (sin6, 0, sizeof(*sin6));
*sa_size = sizeof(*sin6);
sin6->sin6_family = AF_INET6;
sin6->sin6_port = port;
sin6->sin6_addr = in6addr_any;
}
static int
ipv6_print_addr (const krb5_address *addr, char *str, size_t len)
{
char buf[128], buf2[3];
#ifdef HAVE_INET_NTOP
if(inet_ntop(AF_INET6, addr->address.data, buf, sizeof(buf)) == NULL)
#endif
{
/* XXX this is pretty ugly, but better than abort() */
int i;
unsigned char *p = addr->address.data;
buf[0] = '\0';
for(i = 0; i < addr->address.length; i++) {
snprintf(buf2, sizeof(buf2), "%02x", p[i]);
if(i > 0 && (i & 1) == 0)
strlcat(buf, ":", sizeof(buf));
strlcat(buf, buf2, sizeof(buf));
}
}
return snprintf(str, len, "IPv6:%s", buf);
}
static int
ipv6_parse_addr (krb5_context context, const char *address, krb5_address *addr)
{
int ret;
struct in6_addr in6;
const char *p;
p = strchr(address, ':');
if(p) {
p++;
if(strncasecmp(address, "ip6:", p - address) == 0 ||
strncasecmp(address, "ipv6:", p - address) == 0 ||
strncasecmp(address, "inet6:", p - address) == 0)
address = p;
}
ret = inet_pton(AF_INET6, address, &in6.s6_addr);
if(ret == 1) {
addr->addr_type = KRB5_ADDRESS_INET6;
ret = krb5_data_alloc(&addr->address, sizeof(in6.s6_addr));
if (ret)
return -1;
memcpy(addr->address.data, in6.s6_addr, sizeof(in6.s6_addr));
return 0;
}
return -1;
}
#endif /* IPv6 */
/*
* table
*/
#define KRB5_ADDRESS_ARANGE (-100)
struct arange {
krb5_address low;
krb5_address high;
};
static int
arange_parse_addr (krb5_context context,
const char *address, krb5_address *addr)
{
char buf[1024];
krb5_addresses low, high;
struct arange *a;
krb5_error_code ret;
if(strncasecmp(address, "RANGE:", 6) != 0)
return -1;
address += 6;
/* should handle netmasks */
strsep_copy(&address, "-", buf, sizeof(buf));
ret = krb5_parse_address(context, buf, &low);
if(ret)
return ret;
if(low.len != 1) {
krb5_free_addresses(context, &low);
return -1;
}
strsep_copy(&address, "-", buf, sizeof(buf));
ret = krb5_parse_address(context, buf, &high);
if(ret) {
krb5_free_addresses(context, &low);
return ret;
}
if(high.len != 1 || high.val[0].addr_type != low.val[0].addr_type) {
krb5_free_addresses(context, &low);
krb5_free_addresses(context, &high);
return -1;
}
krb5_data_alloc(&addr->address, sizeof(*a));
addr->addr_type = KRB5_ADDRESS_ARANGE;
a = addr->address.data;
if(krb5_address_order(context, &low.val[0], &high.val[0]) < 0) {
a->low = low.val[0];
a->high = high.val[0];
} else {
a->low = high.val[0];
a->high = low.val[0];
}
return 0;
}
static int
arange_free (krb5_context context, krb5_address *addr)
{
struct arange *a;
a = addr->address.data;
krb5_free_address(context, &a->low);
krb5_free_address(context, &a->high);
return 0;
}
static int
arange_copy (krb5_context context, const krb5_address *inaddr,
krb5_address *outaddr)
{
krb5_error_code ret;
struct arange *i, *o;
outaddr->addr_type = KRB5_ADDRESS_ARANGE;
ret = krb5_data_alloc(&outaddr->address, sizeof(*o));
if(ret)
return ret;
i = inaddr->address.data;
o = outaddr->address.data;
ret = krb5_copy_address(context, &i->low, &o->low);
if(ret) {
krb5_data_free(&outaddr->address);
return ret;
}
ret = krb5_copy_address(context, &i->high, &o->high);
if(ret) {
krb5_free_address(context, &o->low);
krb5_data_free(&outaddr->address);
return ret;
}
return 0;
}
static int
arange_print_addr (const krb5_address *addr, char *str, size_t len)
{
struct arange *a;
krb5_error_code ret;
size_t l, ret_len = 0;
a = addr->address.data;
l = strlcpy(str, "RANGE:", len);
ret_len += l;
ret = krb5_print_address (&a->low, str + ret_len, len - ret_len, &l);
ret_len += l;
l = strlcat(str, "-", len);
ret_len += l;
ret = krb5_print_address (&a->high, str + ret_len, len - ret_len, &l);
ret_len += l;
return ret_len;
}
static int
arange_order_addr(krb5_context context,
const krb5_address *addr1,
const krb5_address *addr2)
{
int tmp1, tmp2, sign;
struct arange *a;
const krb5_address *a2;
if(addr1->addr_type == KRB5_ADDRESS_ARANGE) {
a = addr1->address.data;
a2 = addr2;
sign = 1;
} else if(addr2->addr_type == KRB5_ADDRESS_ARANGE) {
a = addr2->address.data;
a2 = addr1;
sign = -1;
} else
abort();
if(a2->addr_type == KRB5_ADDRESS_ARANGE) {
struct arange *b = a2->address.data;
tmp1 = krb5_address_order(context, &a->low, &b->low);
if(tmp1 != 0)
return sign * tmp1;
return sign * krb5_address_order(context, &a->high, &b->high);
} else if(a2->addr_type == a->low.addr_type) {
tmp1 = krb5_address_order(context, &a->low, a2);
if(tmp1 > 0)
return sign;
tmp2 = krb5_address_order(context, &a->high, a2);
if(tmp2 < 0)
return -sign;
return 0;
} else {
return sign * (addr1->addr_type - addr2->addr_type);
}
}
static struct addr_operations at[] = {
{AF_INET, KRB5_ADDRESS_INET, sizeof(struct sockaddr_in),
ipv4_sockaddr2addr,
ipv4_sockaddr2port,
ipv4_addr2sockaddr,
ipv4_h_addr2sockaddr,
ipv4_h_addr2addr,
ipv4_uninteresting, ipv4_anyaddr, ipv4_print_addr, ipv4_parse_addr},
#ifdef HAVE_IPV6
{AF_INET6, KRB5_ADDRESS_INET6, sizeof(struct sockaddr_in6),
ipv6_sockaddr2addr,
ipv6_sockaddr2port,
ipv6_addr2sockaddr,
ipv6_h_addr2sockaddr,
ipv6_h_addr2addr,
ipv6_uninteresting, ipv6_anyaddr, ipv6_print_addr, ipv6_parse_addr} ,
#endif
{KRB5_ADDRESS_ADDRPORT, KRB5_ADDRESS_ADDRPORT, 0,
NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL },
/* fake address type */
{KRB5_ADDRESS_ARANGE, KRB5_ADDRESS_ARANGE, sizeof(struct arange),
NULL, NULL, NULL, NULL, NULL, NULL, NULL,
arange_print_addr, arange_parse_addr,
arange_order_addr, arange_free, arange_copy }
};
static int num_addrs = sizeof(at) / sizeof(at[0]);
static size_t max_sockaddr_size = 0;
/*
* generic functions
*/
static struct addr_operations *
find_af(int af)
{
struct addr_operations *a;
for (a = at; a < at + num_addrs; ++a)
if (af == a->af)
return a;
return NULL;
}
static struct addr_operations *
find_atype(int atype)
{
struct addr_operations *a;
for (a = at; a < at + num_addrs; ++a)
if (atype == a->atype)
return a;
return NULL;
}
krb5_error_code
krb5_sockaddr2address (krb5_context context,
const struct sockaddr *sa, krb5_address *addr)
{
struct addr_operations *a = find_af(sa->sa_family);
if (a == NULL) {
krb5_set_error_string (context, "Address family %d not supported",
sa->sa_family);
return KRB5_PROG_ATYPE_NOSUPP;
}
return (*a->sockaddr2addr)(sa, addr);
}
krb5_error_code
krb5_sockaddr2port (krb5_context context,
const struct sockaddr *sa, int16_t *port)
{
struct addr_operations *a = find_af(sa->sa_family);
if (a == NULL) {
krb5_set_error_string (context, "Address family %d not supported",
sa->sa_family);
return KRB5_PROG_ATYPE_NOSUPP;
}
return (*a->sockaddr2port)(sa, port);
}
krb5_error_code
krb5_addr2sockaddr (krb5_context context,
const krb5_address *addr,
struct sockaddr *sa,
int *sa_size,
int port)
{
struct addr_operations *a = find_atype(addr->addr_type);
if (a == NULL) {
krb5_set_error_string (context, "Address type %d not supported",
addr->addr_type);
return KRB5_PROG_ATYPE_NOSUPP;
}
if (a->addr2sockaddr == NULL) {
krb5_set_error_string (context, "Can't convert address type %d to sockaddr",
addr->addr_type);
return KRB5_PROG_ATYPE_NOSUPP;
}
(*a->addr2sockaddr)(addr, sa, sa_size, port);
return 0;
}
size_t
krb5_max_sockaddr_size (void)
{
if (max_sockaddr_size == 0) {
struct addr_operations *a;
for(a = at; a < at + num_addrs; ++a)
max_sockaddr_size = max(max_sockaddr_size, a->max_sockaddr_size);
}
return max_sockaddr_size;
}
krb5_boolean
krb5_sockaddr_uninteresting(const struct sockaddr *sa)
{
struct addr_operations *a = find_af(sa->sa_family);
if (a == NULL || a->uninteresting == NULL)
return TRUE;
return (*a->uninteresting)(sa);
}
krb5_error_code
krb5_h_addr2sockaddr (krb5_context context,
int af,
const char *addr, struct sockaddr *sa, int *sa_size,
int port)
{
struct addr_operations *a = find_af(af);
if (a == NULL) {
krb5_set_error_string (context, "Address family %d not supported", af);
return KRB5_PROG_ATYPE_NOSUPP;
}
(*a->h_addr2sockaddr)(addr, sa, sa_size, port);
return 0;
}
krb5_error_code
krb5_h_addr2addr (krb5_context context,
int af,
const char *haddr, krb5_address *addr)
{
struct addr_operations *a = find_af(af);
if (a == NULL) {
krb5_set_error_string (context, "Address family %d not supported", af);
return KRB5_PROG_ATYPE_NOSUPP;
}
return (*a->h_addr2addr)(haddr, addr);
}
krb5_error_code
krb5_anyaddr (krb5_context context,
int af,
struct sockaddr *sa,
int *sa_size,
int port)
{
struct addr_operations *a = find_af (af);
if (a == NULL) {
krb5_set_error_string (context, "Address family %d not supported", af);
return KRB5_PROG_ATYPE_NOSUPP;
}
(*a->anyaddr)(sa, sa_size, port);
return 0;
}
krb5_error_code
krb5_print_address (const krb5_address *addr,
char *str, size_t len, size_t *ret_len)
{
struct addr_operations *a = find_atype(addr->addr_type);
if (a == NULL) {
char *s;
int l;
int i;
s = str;
l = snprintf(s, len, "TYPE_%d:", addr->addr_type);
if (l < 0)
return EINVAL;
s += l;
len -= l;
for(i = 0; i < addr->address.length; i++) {
l = snprintf(s, len, "%02x", ((char*)addr->address.data)[i]);
if (l < 0)
return EINVAL;
len -= l;
s += l;
}
*ret_len = s - str;
return 0;
}
*ret_len = (*a->print_addr)(addr, str, len);
return 0;
}
krb5_error_code
krb5_parse_address(krb5_context context,
const char *string,
krb5_addresses *addresses)
{
int i, n;
struct addrinfo *ai, *a;
int error;
int save_errno;
for(i = 0; i < num_addrs; i++) {
if(at[i].parse_addr) {
krb5_address a;
if((*at[i].parse_addr)(context, string, &a) == 0) {
ALLOC_SEQ(addresses, 1);
addresses->val[0] = a;
return 0;
}
}
}
error = getaddrinfo (string, NULL, NULL, &ai);
if (error) {
save_errno = errno;
krb5_set_error_string (context, "%s: %s", string, gai_strerror(error));
return krb5_eai_to_heim_errno(error, save_errno);
}
n = 0;
for (a = ai; a != NULL; a = a->ai_next)
++n;
ALLOC_SEQ(addresses, n);
for (a = ai, i = 0; a != NULL; a = a->ai_next, ++i) {
krb5_sockaddr2address (context, ai->ai_addr, &addresses->val[i]);
}
freeaddrinfo (ai);
return 0;
}
int
krb5_address_order(krb5_context context,
const krb5_address *addr1,
const krb5_address *addr2)
{
/* this sucks; what if both addresses have order functions, which
should we call? this works for now, though */
struct addr_operations *a;
a = find_atype(addr1->addr_type);
if(a == NULL) {
krb5_set_error_string (context, "Address family %d not supported",
addr1->addr_type);
return KRB5_PROG_ATYPE_NOSUPP;
}
if(a->order_addr != NULL)
return (*a->order_addr)(context, addr1, addr2);
a = find_atype(addr2->addr_type);
if(a == NULL) {
krb5_set_error_string (context, "Address family %d not supported",
addr2->addr_type);
return KRB5_PROG_ATYPE_NOSUPP;
}
if(a->order_addr != NULL)
return (*a->order_addr)(context, addr1, addr2);
if(addr1->addr_type != addr2->addr_type)
return addr1->addr_type - addr2->addr_type;
if(addr1->address.length != addr2->address.length)
return addr1->address.length - addr2->address.length;
return memcmp (addr1->address.data,
addr2->address.data,
addr1->address.length);
}
krb5_boolean
krb5_address_compare(krb5_context context,
const krb5_address *addr1,
const krb5_address *addr2)
{
return krb5_address_order (context, addr1, addr2) == 0;
}
krb5_boolean
krb5_address_search(krb5_context context,
const krb5_address *addr,
const krb5_addresses *addrlist)
{
int i;
for (i = 0; i < addrlist->len; ++i)
if (krb5_address_compare (context, addr, &addrlist->val[i]))
return TRUE;
return FALSE;
}
krb5_error_code
krb5_free_address(krb5_context context,
krb5_address *address)
{
struct addr_operations *a = find_af (address->addr_type);
if(a != NULL && a->free_addr != NULL)
return (*a->free_addr)(context, address);
krb5_data_free (&address->address);
return 0;
}
krb5_error_code
krb5_free_addresses(krb5_context context,
krb5_addresses *addresses)
{
int i;
for(i = 0; i < addresses->len; i++)
krb5_free_address(context, &addresses->val[i]);
free(addresses->val);
return 0;
}
krb5_error_code
krb5_copy_address(krb5_context context,
const krb5_address *inaddr,
krb5_address *outaddr)
{
struct addr_operations *a = find_af (inaddr->addr_type);
if(a != NULL && a->copy_addr != NULL)
return (*a->copy_addr)(context, inaddr, outaddr);
return copy_HostAddress(inaddr, outaddr);
}
krb5_error_code
krb5_copy_addresses(krb5_context context,
const krb5_addresses *inaddr,
krb5_addresses *outaddr)
{
int i;
ALLOC_SEQ(outaddr, inaddr->len);
if(inaddr->len > 0 && outaddr->val == NULL)
return ENOMEM;
for(i = 0; i < inaddr->len; i++)
krb5_copy_address(context, &inaddr->val[i], &outaddr->val[i]);
return 0;
}
krb5_error_code
krb5_append_addresses(krb5_context context,
krb5_addresses *dest,
const krb5_addresses *source)
{
krb5_address *tmp;
krb5_error_code ret;
int i;
if(source->len > 0) {
tmp = realloc(dest->val, (dest->len + source->len) * sizeof(*tmp));
if(tmp == NULL) {
krb5_set_error_string(context, "realloc: out of memory");
return ENOMEM;
}
dest->val = tmp;
for(i = 0; i < source->len; i++) {
/* skip duplicates */
if(krb5_address_search(context, &source->val[i], dest))
continue;
ret = krb5_copy_address(context,
&source->val[i],
&dest->val[dest->len]);
if(ret)
return ret;
dest->len++;
}
}
return 0;
}
/*
* Create an address of type KRB5_ADDRESS_ADDRPORT from (addr, port)
*/
krb5_error_code
krb5_make_addrport (krb5_context context,
krb5_address **res, const krb5_address *addr, int16_t port)
{
krb5_error_code ret;
size_t len = addr->address.length + 2 + 4 * 4;
u_char *p;
*res = malloc (sizeof(**res));
if (*res == NULL) {
krb5_set_error_string(context, "malloc: out of memory");
return ENOMEM;
}
(*res)->addr_type = KRB5_ADDRESS_ADDRPORT;
ret = krb5_data_alloc (&(*res)->address, len);
if (ret) {
krb5_set_error_string(context, "malloc: out of memory");
free (*res);
return ret;
}
p = (*res)->address.data;
*p++ = 0;
*p++ = 0;
*p++ = (addr->addr_type ) & 0xFF;
*p++ = (addr->addr_type >> 8) & 0xFF;
*p++ = (addr->address.length ) & 0xFF;
*p++ = (addr->address.length >> 8) & 0xFF;
*p++ = (addr->address.length >> 16) & 0xFF;
*p++ = (addr->address.length >> 24) & 0xFF;
memcpy (p, addr->address.data, addr->address.length);
p += addr->address.length;
*p++ = 0;
*p++ = 0;
*p++ = (KRB5_ADDRESS_IPPORT ) & 0xFF;
*p++ = (KRB5_ADDRESS_IPPORT >> 8) & 0xFF;
*p++ = (2 ) & 0xFF;
*p++ = (2 >> 8) & 0xFF;
*p++ = (2 >> 16) & 0xFF;
*p++ = (2 >> 24) & 0xFF;
memcpy (p, &port, 2);
p += 2;
return 0;
}
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