static int bind_afalg(ENGINE *e)
{
/* Ensure the afalg error handling is set up */
unsigned short i;
ERR_load_AFALG_strings();
if (!ENGINE_set_id(e, engine_afalg_id)
|| !ENGINE_set_name(e, engine_afalg_name)
|| !ENGINE_set_destroy_function(e, afalg_destroy)
|| !ENGINE_set_init_function(e, afalg_init)
|| !ENGINE_set_finish_function(e, afalg_finish)) {
AFALGerr(AFALG_F_BIND_AFALG, AFALG_R_INIT_FAILED);
return 0;
}
/*
* Create _hidden_aes_xxx_cbc by calling afalg_aes_xxx_cbc
* now, as bind_aflag can only be called by one thread at a
* time.
*/
for(i = 0; i < OSSL_NELEM(afalg_cipher_nids); i++) {
if (afalg_aes_cbc(afalg_cipher_nids[i]) == NULL) {
AFALGerr(AFALG_F_BIND_AFALG, AFALG_R_INIT_FAILED);
return 0;
}
}
if (!ENGINE_set_ciphers(e, afalg_ciphers)) {
AFALGerr(AFALG_F_BIND_AFALG, AFALG_R_INIT_FAILED);
return 0;
}
return 1;
}
static int bind_afalg(ENGINE *e)
{
/* Ensure the afalg error handling is set up */
ERR_load_AFALG_strings();
if (!ENGINE_set_id(e, engine_afalg_id)
|| !ENGINE_set_name(e, engine_afalg_name)
|| !ENGINE_set_destroy_function(e, afalg_destroy)
|| !ENGINE_set_init_function(e, afalg_init)
|| !ENGINE_set_finish_function(e, afalg_finish)) {
AFALGerr(AFALG_F_BIND_AFALG, AFALG_R_INIT_FAILED);
return 0;
}
/*
* Create _hidden_aes_128_cbc by calling afalg_aes_128_cbc
* now, as bind_aflag can only be called by one thread at a
* time.
*/
if (afalg_aes_128_cbc() == NULL) {
AFALGerr(AFALG_F_BIND_AFALG, AFALG_R_INIT_FAILED);
return 0;
}
if (!ENGINE_set_ciphers(e, afalg_ciphers)) {
AFALGerr(AFALG_F_BIND_AFALG, AFALG_R_INIT_FAILED);
return 0;
}
return 1;
}
static int afalg_chk_platform(void)
{
int ret;
int i;
int kver[3] = { -1, -1, -1 };
char *str;
struct utsname ut;
ret = uname(&ut);
if (ret != 0) {
AFALGerr(AFALG_F_AFALG_CHK_PLATFORM,
AFALG_R_FAILED_TO_GET_PLATFORM_INFO);
return 0;
}
str = strtok(ut.release, ".");
for (i = 0; i < 3 && str != NULL; i++) {
kver[i] = atoi(str);
str = strtok(NULL, ".");
}
if (KERNEL_VERSION(kver[0], kver[1], kver[2])
< KERNEL_VERSION(K_MAJ, K_MIN1, K_MIN2)) {
ALG_ERR("ASYNC AFALG not supported this kernel(%d.%d.%d)\n",
kver[0], kver[1], kver[2]);
ALG_ERR("ASYNC AFALG requires kernel version %d.%d.%d or later\n",
K_MAJ, K_MIN1, K_MIN2);
AFALGerr(AFALG_F_AFALG_CHK_PLATFORM,
AFALG_R_KERNEL_DOES_NOT_SUPPORT_ASYNC_AFALG);
return 0;
}
return 1;
}
static int afalg_setup_async_event_notification(afalg_aio *aio)
{
ASYNC_JOB *job;
ASYNC_WAIT_CTX *waitctx;
void *custom = NULL;
int ret;
if ((job = ASYNC_get_current_job()) != NULL) {
/* Async mode */
waitctx = ASYNC_get_wait_ctx(job);
if (waitctx == NULL) {
ALG_WARN("%s(%d): ASYNC_get_wait_ctx error", __FILE__, __LINE__);
return 0;
}
/* Get waitfd from ASYNC_WAIT_CTX if it is already set */
ret = ASYNC_WAIT_CTX_get_fd(waitctx, engine_afalg_id,
&aio->efd, &custom);
if (ret == 0) {
/*
* waitfd is not set in ASYNC_WAIT_CTX, create a new one
* and set it. efd will be signaled when AIO operation completes
*/
aio->efd = eventfd(0);
if (aio->efd == -1) {
ALG_PERR("%s(%d): Failed to get eventfd : ", __FILE__,
__LINE__);
AFALGerr(AFALG_F_AFALG_SETUP_ASYNC_EVENT_NOTIFICATION,
AFALG_R_EVENTFD_FAILED);
return 0;
}
ret = ASYNC_WAIT_CTX_set_wait_fd(waitctx, engine_afalg_id,
aio->efd, custom,
afalg_waitfd_cleanup);
if (ret == 0) {
ALG_WARN("%s(%d): Failed to set wait fd", __FILE__, __LINE__);
close(aio->efd);
return 0;
}
/* make fd non-blocking in async mode */
if (fcntl(aio->efd, F_SETFL, O_NONBLOCK) != 0) {
ALG_WARN("%s(%d): Failed to set event fd as NONBLOCKING",
__FILE__, __LINE__);
}
}
aio->mode = MODE_ASYNC;
} else {
/* Sync mode */
aio->efd = eventfd(0);
if (aio->efd == -1) {
ALG_PERR("%s(%d): Failed to get eventfd : ", __FILE__, __LINE__);
AFALGerr(AFALG_F_AFALG_SETUP_ASYNC_EVENT_NOTIFICATION,
AFALG_R_EVENTFD_FAILED);
return 0;
}
aio->mode = MODE_SYNC;
}
return 1;
}
static int afalg_create_sk(afalg_ctx *actx, const char *ciphertype,
const char *ciphername)
{
struct sockaddr_alg sa;
int r = -1;
actx->bfd = actx->sfd = -1;
memset(&sa, 0, sizeof(sa));
sa.salg_family = AF_ALG;
strncpy((char *) sa.salg_type, ciphertype, ALG_MAX_SALG_TYPE);
sa.salg_type[ALG_MAX_SALG_TYPE-1] = '\0';
strncpy((char *) sa.salg_name, ciphername, ALG_MAX_SALG_NAME);
sa.salg_name[ALG_MAX_SALG_NAME-1] = '\0';
actx->bfd = socket(AF_ALG, SOCK_SEQPACKET, 0);
if (actx->bfd == -1) {
ALG_PERR("%s: Failed to open socket : ", __func__);
AFALGerr(AFALG_F_AFALG_CREATE_SK, AFALG_R_SOCKET_CREATE_FAILED);
goto err;
}
r = bind(actx->bfd, (struct sockaddr *)&sa, sizeof(sa));
if (r < 0) {
ALG_PERR("%s: Failed to bind socket : ", __func__);
AFALGerr(AFALG_F_AFALG_CREATE_SK, AFALG_R_SOCKET_BIND_FAILED);
goto err;
}
actx->sfd = accept(actx->bfd, NULL, 0);
if (actx->sfd < 0) {
ALG_PERR("%s: Socket Accept Failed : ", __func__);
AFALGerr(AFALG_F_AFALG_CREATE_SK, AFALG_R_SOCKET_ACCEPT_FAILED);
goto err;
}
return 1;
err:
if (actx->bfd >= 0)
close(actx->bfd);
if (actx->sfd >= 0)
close(actx->sfd);
actx->bfd = actx->sfd = -1;
return 0;
}
static int afalg_chk_platform(void)
{
int ret;
int i;
int kver[3] = { -1, -1, -1 };
int sock;
char *str;
struct utsname ut;
ret = uname(&ut);
if (ret != 0) {
AFALGerr(AFALG_F_AFALG_CHK_PLATFORM,
AFALG_R_FAILED_TO_GET_PLATFORM_INFO);
return 0;
}
str = strtok(ut.release, ".");
for (i = 0; i < 3 && str != NULL; i++) {
kver[i] = atoi(str);
str = strtok(NULL, ".");
}
if (KERNEL_VERSION(kver[0], kver[1], kver[2])
< KERNEL_VERSION(K_MAJ, K_MIN1, K_MIN2)) {
ALG_ERR("ASYNC AFALG not supported this kernel(%d.%d.%d)\n",
kver[0], kver[1], kver[2]);
ALG_ERR("ASYNC AFALG requires kernel version %d.%d.%d or later\n",
K_MAJ, K_MIN1, K_MIN2);
AFALGerr(AFALG_F_AFALG_CHK_PLATFORM,
AFALG_R_KERNEL_DOES_NOT_SUPPORT_ASYNC_AFALG);
return 0;
}
/* Test if we can actually create an AF_ALG socket */
sock = socket(AF_ALG, SOCK_SEQPACKET, 0);
if (sock == -1) {
AFALGerr(AFALG_F_AFALG_CHK_PLATFORM, AFALG_R_SOCKET_CREATE_FAILED);
return 0;
}
close(sock);
return 1;
}
static ossl_inline int afalg_set_key(afalg_ctx *actx, const unsigned char *key,
const int klen)
{
int ret;
ret = setsockopt(actx->bfd, SOL_ALG, ALG_SET_KEY, key, klen);
if (ret < 0) {
ALG_PERR("%s(%d): Failed to set socket option : ", __FILE__, __LINE__);
AFALGerr(AFALG_F_AFALG_SET_KEY, AFALG_R_SOCKET_SET_KEY_FAILED);
return 0;
}
return 1;
}
static int afalg_init_aio(afalg_aio *aio)
{
int r = -1;
/* Initialise for AIO */
aio->aio_ctx = 0;
r = io_setup(MAX_INFLIGHTS, &aio->aio_ctx);
if (r < 0) {
ALG_PERR("%s: io_setup error : ", __func__);
AFALGerr(AFALG_F_AFALG_INIT_AIO, AFALG_R_IO_SETUP_FAILED);
return 0;
}
memset(aio->cbt, 0, sizeof(aio->cbt));
aio->efd = -1;
aio->mode = MODE_UNINIT;
return 1;
}
