in Sources/CCryptoBoringSSL/crypto/x509/by_dir.c [257:457]
static int get_cert_by_subject(X509_LOOKUP *xl, int type, X509_NAME *name,
X509_OBJECT *ret)
{
BY_DIR *ctx;
union {
struct {
X509 st_x509;
X509_CINF st_x509_cinf;
} x509;
struct {
X509_CRL st_crl;
X509_CRL_INFO st_crl_info;
} crl;
} data;
int ok = 0;
size_t i;
int j, k;
unsigned long h;
unsigned long hash_array[2];
int hash_index;
BUF_MEM *b = NULL;
X509_OBJECT stmp, *tmp;
const char *postfix = "";
if (name == NULL)
return (0);
stmp.type = type;
if (type == X509_LU_X509) {
data.x509.st_x509.cert_info = &data.x509.st_x509_cinf;
data.x509.st_x509_cinf.subject = name;
stmp.data.x509 = &data.x509.st_x509;
postfix = "";
} else if (type == X509_LU_CRL) {
data.crl.st_crl.crl = &data.crl.st_crl_info;
data.crl.st_crl_info.issuer = name;
stmp.data.crl = &data.crl.st_crl;
postfix = "r";
} else {
OPENSSL_PUT_ERROR(X509, X509_R_WRONG_LOOKUP_TYPE);
goto finish;
}
if ((b = BUF_MEM_new()) == NULL) {
OPENSSL_PUT_ERROR(X509, ERR_R_BUF_LIB);
goto finish;
}
ctx = (BY_DIR *)xl->method_data;
hash_array[0] = X509_NAME_hash(name);
hash_array[1] = X509_NAME_hash_old(name);
for (hash_index = 0; hash_index < 2; ++hash_index) {
h = hash_array[hash_index];
for (i = 0; i < sk_BY_DIR_ENTRY_num(ctx->dirs); i++) {
BY_DIR_ENTRY *ent;
size_t idx;
BY_DIR_HASH htmp, *hent;
ent = sk_BY_DIR_ENTRY_value(ctx->dirs, i);
j = strlen(ent->dir) + 1 + 8 + 6 + 1 + 1;
if (!BUF_MEM_grow(b, j)) {
OPENSSL_PUT_ERROR(X509, ERR_R_MALLOC_FAILURE);
goto finish;
}
if (type == X509_LU_CRL && ent->hashes) {
htmp.hash = h;
CRYPTO_STATIC_MUTEX_lock_read(&g_ent_hashes_lock);
if (sk_BY_DIR_HASH_find(ent->hashes, &idx, &htmp)) {
hent = sk_BY_DIR_HASH_value(ent->hashes, idx);
k = hent->suffix;
} else {
hent = NULL;
k = 0;
}
CRYPTO_STATIC_MUTEX_unlock_read(&g_ent_hashes_lock);
} else {
k = 0;
hent = NULL;
}
for (;;) {
char c = '/';
#ifdef OPENSSL_SYS_VMS
c = ent->dir[strlen(ent->dir) - 1];
if (c != ':' && c != '>' && c != ']') {
/*
* If no separator is present, we assume the directory
* specifier is a logical name, and add a colon. We
* really should use better VMS routines for merging
* things like this, but this will do for now... --
* Richard Levitte
*/
c = ':';
} else {
c = '\0';
}
#endif
if (c == '\0') {
/*
* This is special. When c == '\0', no directory
* separator should be added.
*/
BIO_snprintf(b->data, b->max,
"%s%08lx.%s%d", ent->dir, h, postfix, k);
} else {
BIO_snprintf(b->data, b->max,
"%s%c%08lx.%s%d", ent->dir, c, h,
postfix, k);
}
#ifndef OPENSSL_NO_POSIX_IO
# if defined(_WIN32) && !defined(stat)
# define stat _stat
# endif
{
struct stat st;
if (stat(b->data, &st) < 0)
break;
}
#endif
/* found one. */
if (type == X509_LU_X509) {
if ((X509_load_cert_file(xl, b->data,
ent->dir_type)) == 0)
break;
} else if (type == X509_LU_CRL) {
if ((X509_load_crl_file(xl, b->data, ent->dir_type)) == 0)
break;
}
/* else case will caught higher up */
k++;
}
/*
* we have added it to the cache so now pull it out again
*/
CRYPTO_MUTEX_lock_write(&xl->store_ctx->objs_lock);
tmp = NULL;
sk_X509_OBJECT_sort(xl->store_ctx->objs);
if (sk_X509_OBJECT_find(xl->store_ctx->objs, &idx, &stmp)) {
tmp = sk_X509_OBJECT_value(xl->store_ctx->objs, idx);
}
CRYPTO_MUTEX_unlock_write(&xl->store_ctx->objs_lock);
/*
* If a CRL, update the last file suffix added for this
*/
if (type == X509_LU_CRL) {
CRYPTO_STATIC_MUTEX_lock_write(&g_ent_hashes_lock);
/*
* Look for entry again in case another thread added an entry
* first.
*/
if (!hent) {
htmp.hash = h;
sk_BY_DIR_HASH_sort(ent->hashes);
if (sk_BY_DIR_HASH_find(ent->hashes, &idx, &htmp))
hent = sk_BY_DIR_HASH_value(ent->hashes, idx);
}
if (!hent) {
hent = OPENSSL_malloc(sizeof(BY_DIR_HASH));
if (hent == NULL) {
CRYPTO_STATIC_MUTEX_unlock_write(&g_ent_hashes_lock);
ok = 0;
goto finish;
}
hent->hash = h;
hent->suffix = k;
if (!sk_BY_DIR_HASH_push(ent->hashes, hent)) {
CRYPTO_STATIC_MUTEX_unlock_write(&g_ent_hashes_lock);
OPENSSL_free(hent);
ok = 0;
goto finish;
}
sk_BY_DIR_HASH_sort(ent->hashes);
} else if (hent->suffix < k)
hent->suffix = k;
CRYPTO_STATIC_MUTEX_unlock_write(&g_ent_hashes_lock);
}
if (tmp != NULL) {
ok = 1;
ret->type = tmp->type;
OPENSSL_memcpy(&ret->data, &tmp->data, sizeof(ret->data));
/*
* If we were going to up the reference count, we would need
* to do it on a perl 'type' basis
*/
/*
* CRYPTO_add(&tmp->data.x509->references,1,
* CRYPTO_LOCK_X509);
*/
goto finish;
}
}
}
finish:
if (b != NULL)
BUF_MEM_free(b);
return (ok);
}