static void build_SYS_str_reasons(void)
{
/* OPENSSL_malloc cannot be used here, use static storage instead */
static char strerror_pool[SPACE_SYS_STR_REASONS];
char *cur = strerror_pool;
size_t cnt = 0;
static int init = 1;
int i;
int saveerrno = get_last_sys_error();
CRYPTO_THREAD_write_lock(err_string_lock);
if (!init) {
CRYPTO_THREAD_unlock(err_string_lock);
return;
}
for (i = 1; i <= NUM_SYS_STR_REASONS; i++) {
ERR_STRING_DATA *str = &SYS_str_reasons[i - 1];
str->error = ERR_PACK(ERR_LIB_SYS, 0, i);
if (str->string == NULL) {
if (openssl_strerror_r(i, cur, sizeof(strerror_pool) - cnt)) {
size_t l = strlen(cur);
str->string = cur;
cnt += l;
if (cnt > sizeof(strerror_pool))
cnt = sizeof(strerror_pool);
cur += l;
/*
* VMS has an unusual quirk of adding spaces at the end of
* some (most? all?) messages. Lets trim them off.
*/
while (ossl_isspace(cur[-1])) {
cur--;
cnt--;
}
*cur++ = '\0';
cnt++;
}
}
if (str->string == NULL)
str->string = "unknown";
}
/*
* Now we still have SYS_str_reasons[NUM_SYS_STR_REASONS] = {0, NULL}, as
* required by ERR_load_strings.
*/
init = 0;
CRYPTO_THREAD_unlock(err_string_lock);
/* openssl_strerror_r could change errno, but we want to preserve it */
set_sys_error(saveerrno);
err_load_strings(SYS_str_reasons);
}
/* Check the extension string for critical flag */
static int v3_check_critical(const char **value)
{
const char *p = *value;
if ((strlen(p) < 9) || strncmp(p, "critical,", 9))
return 0;
p += 9;
while (ossl_isspace(*p))
p++;
*value = p;
return 1;
}
/* Check extension string for generic extension and return the type */
static int v3_check_generic(const char **value)
{
int gen_type = 0;
const char *p = *value;
if ((strlen(p) >= 4) && strncmp(p, "DER:", 4) == 0) {
p += 4;
gen_type = 1;
} else if ((strlen(p) >= 5) && strncmp(p, "ASN1:", 5) == 0) {
p += 5;
gen_type = 2;
} else
return 0;
while (ossl_isspace(*p))
p++;
*value = p;
return gen_type;
}
