static int csnmp_strvbcopy (char *dst, /* {{{ */
const struct variable_list *vb, size_t dst_size)
{
char *src;
size_t num_chars;
size_t i;
if (vb->type == ASN_OCTET_STR)
src = (char *) vb->val.string;
else if (vb->type == ASN_BIT_STR)
src = (char *) vb->val.bitstring;
else
{
dst[0] = 0;
return (EINVAL);
}
num_chars = dst_size - 1;
if (num_chars > vb->val_len)
num_chars = vb->val_len;
for (i = 0; i < num_chars; i++)
{
/* Check for control characters. */
if ((unsigned char)src[i] < 32)
return (csnmp_strvbcopy_hexstring (dst, vb, dst_size));
dst[i] = src[i];
}
dst[num_chars] = 0;
return ((int) vb->val_len);
} /* }}} int csnmp_strvbcopy */
/* csnmp_strvbcopy copies the octet string or bit string contained in vb to
* dst. If non-printable characters are detected, it will switch to a hex
* representation of the string. Returns zero on success, EINVAL if vb does not
* contain a string and ENOMEM if dst is not large enough to contain the
* string. */
static int csnmp_strvbcopy (char *dst, /* {{{ */
const struct variable_list *vb, size_t dst_size)
{
char *src;
size_t num_chars;
size_t i;
if (vb->type == ASN_OCTET_STR)
src = (char *) vb->val.string;
else if (vb->type == ASN_BIT_STR)
src = (char *) vb->val.bitstring;
else if (vb->type == ASN_IPADDRESS)
{
return ssnprintf (dst, dst_size, "%"PRIu8".%"PRIu8".%"PRIu8".%"PRIu8"",
(uint8_t) vb->val.string[0],
(uint8_t) vb->val.string[1],
(uint8_t) vb->val.string[2],
(uint8_t) vb->val.string[3]);
}
else
{
dst[0] = 0;
return (EINVAL);
}
num_chars = dst_size - 1;
if (num_chars > vb->val_len)
num_chars = vb->val_len;
for (i = 0; i < num_chars; i++)
{
/* Check for control characters. */
if ((unsigned char)src[i] < 32)
return (csnmp_strvbcopy_hexstring (dst, vb, dst_size));
dst[i] = src[i];
}
dst[num_chars] = 0;
dst[dst_size - 1] = 0;
if (dst_size <= vb->val_len)
return ENOMEM;
return 0;
} /* }}} int csnmp_strvbcopy */
