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value.c
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value.c
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/*
* value.c Functions to handle value_data_t
*
* Version: $Id$
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*
* Copyright 2014 The FreeRADIUS server project
*/
RCSID("$Id$")
#include <freeradius-devel/libradius.h>
#include <ctype.h>
/** Compare two values
*
* @param[in] a_type of data to compare.
* @param[in] a_len of data to compare.
* @param[in] a Value to compare.
* @param[in] b_type of data to compare.
* @param[in] b_len of data to compare.
* @param[in] b Value to compare.
* @return -1 if a is less than b, 0 if both are equal, 1 if a is more than b, < -1 on error.
*/
int value_data_cmp(PW_TYPE a_type, value_data_t const *a, size_t a_len,
PW_TYPE b_type, value_data_t const *b, size_t b_len)
{
int compare = 0;
if (a_type != b_type) {
fr_strerror_printf("Can't compare values of different types");
return -2;
}
/*
* After doing the previous check for special comparisons,
* do the per-type comparison here.
*/
switch (a_type) {
case PW_TYPE_ABINARY:
case PW_TYPE_OCTETS:
case PW_TYPE_STRING: /* We use memcmp to be \0 safe */
{
size_t length;
if (a_len < b_len) {
length = a_len;
} else {
length = b_len;
}
if (length) {
compare = memcmp(a->octets, b->octets, length);
if (compare != 0) break;
}
/*
* Contents are the same. The return code
* is therefore the difference in lengths.
*
* i.e. "0x00" is smaller than "0x0000"
*/
compare = a_len - b_len;
}
break;
/*
* Short-hand for simplicity.
*/
#define CHECK(_type) if (a->_type < b->_type) { compare = -1; \
} else if (a->_type > b->_type) { compare = +1; }
case PW_TYPE_BOOLEAN: /* this isn't a RADIUS type, and shouldn't really ever be used */
case PW_TYPE_BYTE:
CHECK(byte);
break;
case PW_TYPE_SHORT:
CHECK(ushort);
break;
case PW_TYPE_DATE:
CHECK(date);
break;
case PW_TYPE_INTEGER:
CHECK(integer);
break;
case PW_TYPE_SIGNED:
CHECK(sinteger);
break;
case PW_TYPE_INTEGER64:
CHECK(integer64);
break;
case PW_TYPE_ETHERNET:
compare = memcmp(a->ether, b->ether, sizeof(a->ether));
break;
case PW_TYPE_IPV4_ADDR: {
uint32_t a_int, b_int;
a_int = ntohl(a->ipaddr.s_addr);
b_int = ntohl(b->ipaddr.s_addr);
if (a_int < b_int) {
compare = -1;
} else if (a_int > b_int) {
compare = +1;
}
}
break;
case PW_TYPE_IPV6_ADDR:
compare = memcmp(&a->ipv6addr, &b->ipv6addr, sizeof(a->ipv6addr));
break;
case PW_TYPE_IPV6_PREFIX:
compare = memcmp(a->ipv6prefix, b->ipv6prefix, sizeof(a->ipv6prefix));
break;
case PW_TYPE_IPV4_PREFIX:
compare = memcmp(a->ipv4prefix, b->ipv4prefix, sizeof(a->ipv4prefix));
break;
case PW_TYPE_IFID:
compare = memcmp(a->ifid, b->ifid, sizeof(a->ifid));
break;
/*
* Na of the types below should be in the REQUEST
*/
case PW_TYPE_INVALID: /* We should never see these */
case PW_TYPE_COMBO_IP_ADDR: /* This should have been converted into IPADDR/IPV6ADDR */
case PW_TYPE_COMBO_IP_PREFIX: /* This should have been converted into IPADDR/IPV6ADDR */
case PW_TYPE_TLV:
case PW_TYPE_EXTENDED:
case PW_TYPE_LONG_EXTENDED:
case PW_TYPE_EVS:
case PW_TYPE_VSA:
case PW_TYPE_TIMEVAL:
case PW_TYPE_MAX:
fr_assert(0); /* unknown type */
return -2;
/*
* Do NOT add a default here, as new types are added
* static analysis will warn us they're not handled
*/
}
if (compare > 0) {
return 1;
} else if (compare < 0) {
return -1;
}
return 0;
}
/*
* We leverage the fact that IPv4 and IPv6 prefixes both
* have the same format:
*
* reserved, prefix-len, data...
*/
static int value_data_cidr_cmp_op(FR_TOKEN op, int bytes,
uint8_t a_net, uint8_t const *a,
uint8_t b_net, uint8_t const *b)
{
int i, common;
uint32_t mask;
/*
* Handle the case of netmasks being identical.
*/
if (a_net == b_net) {
int compare;
compare = memcmp(a, b, bytes);
/*
* If they're identical return true for
* identical.
*/
if ((compare == 0) &&
((op == T_OP_CMP_EQ) ||
(op == T_OP_LE) ||
(op == T_OP_GE))) {
return true;
}
/*
* Everything else returns false.
*
* 10/8 == 24/8 --> false
* 10/8 <= 24/8 --> false
* 10/8 >= 24/8 --> false
*/
return false;
}
/*
* Netmasks are different. That limits the
* possible results, based on the operator.
*/
switch (op) {
case T_OP_CMP_EQ:
return false;
case T_OP_NE:
return true;
case T_OP_LE:
case T_OP_LT: /* 192/8 < 192.168/16 --> false */
if (a_net < b_net) {
return false;
}
break;
case T_OP_GE:
case T_OP_GT: /* 192/16 > 192.168/8 --> false */
if (a_net > b_net) {
return false;
}
break;
default:
return false;
}
if (a_net < b_net) {
common = a_net;
} else {
common = b_net;
}
/*
* Do the check byte by byte. If the bytes are
* identical, it MAY be a match. If they're different,
* it is NOT a match.
*/
i = 0;
while (i < bytes) {
/*
* All leading bytes are identical.
*/
if (common == 0) return true;
/*
* Doing bitmasks takes more work.
*/
if (common < 8) break;
if (a[i] != b[i]) return false;
common -= 8;
i++;
continue;
}
mask = 1;
mask <<= (8 - common);
mask--;
mask = ~mask;
if ((a[i] & mask) == ((b[i] & mask))) {
return true;
}
return false;
}
/** Compare two attributes using an operator
*
* @param[in] op to use in comparison.
* @param[in] a_type of data to compare.
* @param[in] a_len of data to compare.
* @param[in] a Value to compare.
* @param[in] b_type of data to compare.
* @param[in] b_len of data to compare.
* @param[in] b Value to compare.
* @return 1 if true, 0 if false, -1 on error.
*/
int value_data_cmp_op(FR_TOKEN op,
PW_TYPE a_type, value_data_t const *a, size_t a_len,
PW_TYPE b_type, value_data_t const *b, size_t b_len)
{
int compare = 0;
if (!a || !b) return -1;
switch (a_type) {
case PW_TYPE_IPV4_ADDR:
switch (b_type) {
case PW_TYPE_IPV4_ADDR: /* IPv4 and IPv4 */
goto cmp;
case PW_TYPE_IPV4_PREFIX: /* IPv4 and IPv4 Prefix */
return value_data_cidr_cmp_op(op, 4, 32, (uint8_t const *) &a->ipaddr,
b->ipv4prefix[1], (uint8_t const *) &b->ipv4prefix[2]);
default:
fr_strerror_printf("Cannot compare IPv4 with IPv6 address");
return -1;
}
case PW_TYPE_IPV4_PREFIX: /* IPv4 and IPv4 Prefix */
switch (b_type) {
case PW_TYPE_IPV4_ADDR:
return value_data_cidr_cmp_op(op, 4, a->ipv4prefix[1],
(uint8_t const *) &a->ipv4prefix[2],
32, (uint8_t const *) &b->ipaddr);
case PW_TYPE_IPV4_PREFIX: /* IPv4 Prefix and IPv4 Prefix */
return value_data_cidr_cmp_op(op, 4, a->ipv4prefix[1],
(uint8_t const *) &a->ipv4prefix[2],
b->ipv4prefix[1], (uint8_t const *) &b->ipv4prefix[2]);
default:
fr_strerror_printf("Cannot compare IPv4 with IPv6 address");
return -1;
}
case PW_TYPE_IPV6_ADDR:
switch (b_type) {
case PW_TYPE_IPV6_ADDR: /* IPv6 and IPv6 */
goto cmp;
case PW_TYPE_IPV6_PREFIX: /* IPv6 and IPv6 Preifx */
return value_data_cidr_cmp_op(op, 16, 128, (uint8_t const *) &a->ipv6addr,
b->ipv6prefix[1], (uint8_t const *) &b->ipv6prefix[2]);
default:
fr_strerror_printf("Cannot compare IPv6 with IPv4 address");
return -1;
}
case PW_TYPE_IPV6_PREFIX:
switch (b_type) {
case PW_TYPE_IPV6_ADDR: /* IPv6 Prefix and IPv6 */
return value_data_cidr_cmp_op(op, 16, a->ipv6prefix[1],
(uint8_t const *) &a->ipv6prefix[2],
128, (uint8_t const *) &b->ipv6addr);
case PW_TYPE_IPV6_PREFIX: /* IPv6 Prefix and IPv6 */
return value_data_cidr_cmp_op(op, 16, a->ipv6prefix[1],
(uint8_t const *) &a->ipv6prefix[2],
b->ipv6prefix[1], (uint8_t const *) &b->ipv6prefix[2]);
default:
fr_strerror_printf("Cannot compare IPv6 with IPv4 address");
return -1;
}
default:
cmp:
compare = value_data_cmp(a_type, a, a_len,
b_type, b, b_len);
if (compare < -1) { /* comparison error */
return -1;
}
}
/*
* Now do the operator comparison.
*/
switch (op) {
case T_OP_CMP_EQ:
return (compare == 0);
case T_OP_NE:
return (compare != 0);
case T_OP_LT:
return (compare < 0);
case T_OP_GT:
return (compare > 0);
case T_OP_LE:
return (compare <= 0);
case T_OP_GE:
return (compare >= 0);
default:
return 0;
}
}
static char const hextab[] = "0123456789abcdef";
/** Convert string value to a value_data_t type
*
* @param[in] ctx to alloc strings in.
* @param[out] dst where to write parsed value.
* @param[in,out] src_type of value data to create/type of value created.
* @param[in] src_enumv DICT_ATTR with string aliases for integer values.
* @param[in] src String to convert. Binary safe for variable length values if len is provided.
* @param[in] src_len may be < 0 in which case strlen(len) is used to determine length, else src_len
* should be the length of the string or sub string to parse.
* @param[in] quote quotation character used to drive de-escaping
* @return length of data written to out or -1 on parse error.
*/
ssize_t value_data_from_str(TALLOC_CTX *ctx, value_data_t *dst,
PW_TYPE *src_type, DICT_ATTR const *src_enumv,
char const *src, ssize_t src_len, char quote)
{
DICT_VALUE *dval;
size_t len;
ssize_t ret;
char buffer[256];
if (!src) return -1;
len = (src_len < 0) ? strlen(src) : (size_t)src_len;
/*
* Set size for all fixed length attributes.
*/
ret = dict_attr_sizes[*src_type][1]; /* Max length */
/*
* It's a variable ret src_type so we just alloc a new buffer
* of size len and copy.
*/
switch (*src_type) {
case PW_TYPE_STRING:
{
char *p, *buff;
char const *q;
int x;
buff = p = talloc_bstrndup(ctx, src, len);
/*
* No de-quoting. Just copy the string.
*/
if (!quote) {
ret = len;
dst->strvalue = buff;
goto finish;
}
/*
* Do escaping for single quoted strings. Only
* single quotes get escaped. Everything else is
* left as-is.
*/
if (quote == '\'') {
q = p;
while (q < (buff + len)) {
/*
* The quotation character is escaped.
*/
if ((q[0] == '\\') &&
(q[1] == quote)) {
*(p++) = quote;
q += 2;
continue;
}
/*
* Two backslashes get mangled to one.
*/
if ((q[0] == '\\') &&
(q[1] == '\\')) {
*(p++) = '\\';
q += 2;
continue;
}
/*
* Not escaped, just copy it over.
*/
*(p++) = *(q++);
}
*p = '\0';
ret = p - buff;
/* Shrink the buffer to the correct size */
dst->strvalue = talloc_realloc(ctx, buff, char, ret + 1);
goto finish;
}
/*
* It's "string" or `string`, do all standard
* escaping.
*/
q = p;
while (q < (buff + len)) {
char c = *q++;
if ((c == '\\') && (q >= (buff + len))) {
fr_strerror_printf("Invalid escape at end of string");
talloc_free(buff);
return -1;
}
/*
* Fix up \X -> ... the binary form of it.
*/
if (c == '\\') {
switch (*q) {
case 'r':
c = '\r';
q++;
break;
case 'n':
c = '\n';
q++;
break;
case 't':
c = '\t';
q++;
break;
case '\\':
c = '\\';
q++;
break;
default:
/*
* \" --> ", but only inside of double quoted strings, etc.
*/
if (*q == quote) {
c = quote;
q++;
break;
}
/*
* \000 --> binary zero character
*/
if ((q[0] >= '0') &&
(q[0] <= '9') &&
(q[1] >= '0') &&
(q[1] <= '9') &&
(q[2] >= '0') &&
(q[2] <= '9') &&
(sscanf(q, "%3o", &x) == 1)) {
c = x;
q += 3;
}
/*
* Else It's not a recognised escape sequence DON'T
* consume the backslash. This is identical
* behaviour to bash and most other things that
* use backslash escaping.
*/
}
}
*p++ = c;
}
*p = '\0';
ret = p - buff;
dst->strvalue = talloc_realloc(ctx, buff, char, ret + 1);
}
goto finish;
case PW_TYPE_VSA:
fr_strerror_printf("Must use 'Attr-26 = ...' instead of 'Vendor-Specific = ...'");
return -1;
/* raw octets: 0x01020304... */
#ifndef WITH_ASCEND_BINARY
do_octets:
#endif
case PW_TYPE_OCTETS:
{
uint8_t *p;
/*
* No 0x prefix, just copy verbatim.
*/
if ((len < 2) || (strncasecmp(src, "0x", 2) != 0)) {
dst->octets = talloc_memdup(ctx, (uint8_t const *)src, len);
talloc_set_type(dst->octets, uint8_t);
ret = len;
goto finish;
}
len -= 2;
/*
* Invalid.
*/
if ((len & 0x01) != 0) {
fr_strerror_printf("Length of Hex String is not even, got %zu bytes", len);
return -1;
}
ret = len >> 1;
p = talloc_array(ctx, uint8_t, ret);
if (fr_hex2bin(p, ret, src + 2, len) != (size_t)ret) {
talloc_free(p);
fr_strerror_printf("Invalid hex data");
return -1;
}
dst->octets = p;
}
goto finish;
case PW_TYPE_ABINARY:
#ifdef WITH_ASCEND_BINARY
if ((len > 1) && (strncasecmp(src, "0x", 2) == 0)) {
ssize_t bin;
if (len > ((sizeof(dst->filter) + 1) * 2)) {
fr_strerror_printf("Hex data is too large for ascend filter");
return -1;
}
bin = fr_hex2bin((uint8_t *) &dst->filter, ret, src + 2, len - 2);
if (bin < ret) {
memset(((uint8_t *) &dst->filter) + bin, 0, ret - bin);
}
} else {
if (ascend_parse_filter(dst, src, len) < 0 ) {
/* Allow ascend_parse_filter's strerror to bubble up */
return -1;
}
}
ret = sizeof(dst->filter);
goto finish;
#else
/*
* If Ascend binary is NOT defined,
* then fall through to raw octets, so that
* the user can at least make them by hand...
*/
goto do_octets;
#endif
/* don't use this! */
case PW_TYPE_TLV:
fr_strerror_printf("Cannot parse TLV");
return -1;
case PW_TYPE_IPV4_ADDR:
{
fr_ipaddr_t addr;
if (fr_pton4(&addr, src, src_len, fr_hostname_lookups, false) < 0) return -1;
/*
* We allow v4 addresses to have a /32 suffix as some databases (PostgreSQL)
* print them this way.
*/
if (addr.prefix != 32) {
fr_strerror_printf("Invalid IPv4 mask length \"/%i\". Only \"/32\" permitted "
"for non-prefix types", addr.prefix);
return -1;
}
dst->ipaddr.s_addr = addr.ipaddr.ip4addr.s_addr;
}
goto finish;
case PW_TYPE_IPV4_PREFIX:
{
fr_ipaddr_t addr;
if (fr_pton4(&addr, src, src_len, fr_hostname_lookups, false) < 0) return -1;
dst->ipv4prefix[1] = addr.prefix;
memcpy(&dst->ipv4prefix[2], &addr.ipaddr.ip4addr.s_addr, sizeof(dst->ipv4prefix) - 2);
}
goto finish;
case PW_TYPE_IPV6_ADDR:
{
fr_ipaddr_t addr;
if (fr_pton6(&addr, src, src_len, fr_hostname_lookups, false) < 0) return -1;
/*
* We allow v6 addresses to have a /128 suffix as some databases (PostgreSQL)
* print them this way.
*/
if (addr.prefix != 128) {
fr_strerror_printf("Invalid IPv6 mask length \"/%i\". Only \"/128\" permitted "
"for non-prefix types", addr.prefix);
return -1;
}
memcpy(&dst->ipv6addr, addr.ipaddr.ip6addr.s6_addr, sizeof(dst->ipv6addr));
}
goto finish;
case PW_TYPE_IPV6_PREFIX:
{
fr_ipaddr_t addr;
if (fr_pton6(&addr, src, src_len, fr_hostname_lookups, false) < 0) return -1;
dst->ipv6prefix[1] = addr.prefix;
memcpy(&dst->ipv6prefix[2], addr.ipaddr.ip6addr.s6_addr, sizeof(dst->ipv6prefix) - 2);
}
goto finish;
default:
break;
}
/*
* It's a fixed size src_type, copy to a temporary buffer and
* \0 terminate if insize >= 0.
*/
if (src_len > 0) {
if (len >= sizeof(buffer)) {
fr_strerror_printf("Temporary buffer too small");
return -1;
}
memcpy(buffer, src, src_len);
buffer[src_len] = '\0';
src = buffer;
}
switch (*src_type) {
case PW_TYPE_BYTE:
{
char *p;
unsigned int i;
/*
* Note that ALL integers are unsigned!
*/
i = fr_strtoul(src, &p);
/*
* Look for the named src for the given
* attribute.
*/
if (src_enumv && *p && !is_whitespace(p)) {
if ((dval = dict_valbyname(src_enumv->attr, src_enumv->vendor, src)) == NULL) {
fr_strerror_printf("Unknown or invalid value \"%s\" for attribute %s",
src, src_enumv->name);
return -1;
}
dst->byte = dval->value;
} else {
if (i > 255) {
fr_strerror_printf("Byte value \"%s\" is larger than 255", src);
return -1;
}
dst->byte = i;
}
break;
}
case PW_TYPE_SHORT:
{
char *p;
unsigned int i;
/*
* Note that ALL integers are unsigned!
*/
i = fr_strtoul(src, &p);
/*
* Look for the named src for the given
* attribute.
*/
if (src_enumv && *p && !is_whitespace(p)) {
if ((dval = dict_valbyname(src_enumv->attr, src_enumv->vendor, src)) == NULL) {
fr_strerror_printf("Unknown or invalid value \"%s\" for attribute %s",
src, src_enumv->name);
return -1;
}
dst->ushort = dval->value;
} else {
if (i > 65535) {
fr_strerror_printf("Short value \"%s\" is larger than 65535", src);
return -1;
}
dst->ushort = i;
}
break;
}
case PW_TYPE_INTEGER:
{
char *p;
unsigned int i;
/*
* Note that ALL integers are unsigned!
*/
i = fr_strtoul(src, &p);
/*
* Look for the named src for the given
* attribute.
*/
if (src_enumv && *p && !is_whitespace(p)) {
if ((dval = dict_valbyname(src_enumv->attr, src_enumv->vendor, src)) == NULL) {
fr_strerror_printf("Unknown or invalid value \"%s\" for attribute %s",
src, src_enumv->name);
return -1;
}
dst->integer = dval->value;
} else {
/*
* Value is always within the limits
*/
dst->integer = i;
}
}
break;
case PW_TYPE_INTEGER64:
{
uint64_t i;
/*
* Note that ALL integers are unsigned!
*/
if (sscanf(src, "%" PRIu64, &i) != 1) {
fr_strerror_printf("Failed parsing \"%s\" as unsigned 64bit integer", src);
return -1;
}
dst->integer64 = i;
}
break;
case PW_TYPE_DATE:
{
/*
* time_t may be 64 bits, whule vp_date MUST be 32-bits. We need an
* intermediary variable to handle the conversions.
*/
time_t date;
struct tm tm = { 0 };
char *end;
/*
* Try to parse dates via locale-specific names,
* using the same format string as strftime(),
* below.
*
* If that fails (e.g. unix dates as integer),
* then we fall back to our parsing routine,
* which is much more forgiving.
*/
end = strptime(src, "%b %e %Y %H:%M:%S %Z", &tm);
if (end && (*end == '\0')) {
date = mktime(&tm);
} else if (fr_get_time(src, &date) < 0) {
fr_strerror_printf("failed to parse time string \"%s\"", src);
return -1;
}
dst->date = date;
}
break;
case PW_TYPE_IFID:
if (ifid_aton(src, (void *) dst->ifid) == NULL) {
fr_strerror_printf("Failed to parse interface-id string \"%s\"", src);
return -1;
}
break;
case PW_TYPE_ETHERNET:
{
char const *c1, *c2, *cp;
size_t p_len = 0;
/*
* Convert things which are obviously integers to Ethernet addresses
*
* We assume the number is the bigendian representation of the
* ethernet address.
*/
if (is_integer(src)) {
uint64_t integer = htonll(atoll(src));
memcpy(dst->ether, &integer, sizeof(dst->ether));
break;
}
cp = src;
while (*cp) {
if (cp[1] == ':') {
c1 = hextab;
c2 = memchr(hextab, tolower((uint8_t) cp[0]), 16);
cp += 2;
} else if ((cp[1] != '\0') && ((cp[2] == ':') || (cp[2] == '\0'))) {
c1 = memchr(hextab, tolower((uint8_t) cp[0]), 16);
c2 = memchr(hextab, tolower((uint8_t) cp[1]), 16);
cp += 2;
if (*cp == ':') cp++;
} else {
c1 = c2 = NULL;
}
if (!c1 || !c2 || (p_len >= sizeof(dst->ether))) {
fr_strerror_printf("failed to parse Ethernet address \"%s\"", src);
return -1;
}
dst->ether[p_len] = ((c1-hextab)<<4) + (c2-hextab);
p_len++;
}
}
break;
/*
* Crazy polymorphic (IPv4/IPv6) attribute src_type for WiMAX.
*
* We try and make is saner by replacing the original
* da, with either an IPv4 or IPv6 da src_type.
*
* These are not dynamic da, and will have the same vendor
* and attribute as the original.
*/
case PW_TYPE_COMBO_IP_ADDR:
{
if (inet_pton(AF_INET6, src, &dst->ipv6addr) > 0) {
*src_type = PW_TYPE_IPV6_ADDR;
ret = dict_attr_sizes[PW_TYPE_COMBO_IP_ADDR][1]; /* size of IPv6 address */
} else {
fr_ipaddr_t ipaddr;
if (ip_hton(&ipaddr, AF_INET, src, false) < 0) {
fr_strerror_printf("Failed to find IPv4 address for %s", src);
return -1;
}
*src_type = PW_TYPE_IPV4_ADDR;
dst->ipaddr.s_addr = ipaddr.ipaddr.ip4addr.s_addr;
ret = dict_attr_sizes[PW_TYPE_COMBO_IP_ADDR][0]; /* size of IPv4 address */
}
}
break;
case PW_TYPE_SIGNED:
/* Damned code for 1 WiMAX attribute */
dst->sinteger = (int32_t)strtol(src, NULL, 10);
break;
/*
* Anything else.
*/
default:
fr_strerror_printf("Unknown attribute type %d", *src_type);
return -1;
}
finish:
return ret;
}
/** Performs byte order reversal for types that need it
*
*/
static ssize_t value_data_hton(value_data_t *dst, PW_TYPE dst_type, void const *src, size_t src_len)
{
size_t dst_len;
uint8_t *dst_ptr;
/* 8 byte integers */
switch (dst_type) {
case PW_TYPE_INTEGER64:
dst_len = sizeof(dst->integer64);
if (src_len < dst_len) {