int
make_option_mask(const struct dhcp_opt *dopts, size_t dopts_len,
uint8_t *mask, const char *opts, int add)
{
char *token, *o, *p, *t;
const struct dhcp_opt *opt;
int match;
unsigned int n;
size_t i;
o = p = strdup(opts);
if (opts == NULL)
return -1;
while ((token = strsep(&p, ", "))) {
if (*token == '\0')
continue;
for (i = 0, opt = dopts; i < dopts_len; i++, opt++) {
match = 0;
if (strcmp(opt->var, token) == 0)
match = 1;
else {
errno = 0;
n = strtol(token, &t, 0);
if (errno == 0 && !*t)
if (opt->option == n)
match = 1;
}
if (match) {
if (add == 2 && !(opt->type & ADDRIPV4)) {
free(o);
errno = EINVAL;
return -1;
}
if (add == 1 || add == 2)
add_option_mask(mask,
opt->option);
else
del_option_mask(mask,
opt->option);
break;
}
}
if (!opt->option) {
free(o);
errno = ENOENT;
return -1;
}
}
free(o);
return 0;
}
int make_option_mask(uint8_t *mask, char **opts, int add)
{
char *token, *p = *opts, *t;
const struct dhcp_opt *opt;
int match, n;
while ((token = strsep(&p, ", "))) {
if (*token == '\0')
continue;
for (opt = dhcp_opts; opt->option; opt++) {
if (!opt->var)
continue;
match = 0;
if (strcmp(opt->var, token) == 0)
match = 1;
else {
errno = 0;
n = strtol(token, &t, 0);
if (errno == 0 && !*t)
if (opt->option == n)
match = 1;
}
if (match) {
if (add == 1)
add_option_mask(mask,
opt->option);
else
del_option_mask(mask,
opt->option);
break;
}
}
if (!opt->option) {
*opts = token;
errno = ENOENT;
return -1;
}
}
return 0;
}