/*
* Copyright 2017-2018 The OpenSSL Project Authors. All Rights Reserved.
*
- * Licensed under the OpenSSL license (the "License"). You may not use
+ * Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
# define CHECK_BSD_STYLE_MACROS
#endif
+/*
+ * ONE global file descriptor for all sessions. This allows operations
+ * such as digest session data copying (see digest_copy()), but is also
+ * saner... why re-open /dev/crypto for every session?
+ */
+static int cfd;
+
/******************************************************************************
*
* Ciphers
*****/
struct cipher_ctx {
- int cfd;
struct session_op sess;
/* to pass from init to do_cipher */
const struct cipher_data_st *cipher_d =
get_cipher_data(EVP_CIPHER_CTX_nid(ctx));
- if ((cipher_ctx->cfd = open("/dev/crypto", O_RDWR, 0)) < 0) {
- SYSerr(SYS_F_OPEN, errno);
- return 0;
- }
-
memset(&cipher_ctx->sess, 0, sizeof(cipher_ctx->sess));
cipher_ctx->sess.cipher = cipher_d->devcryptoid;
cipher_ctx->sess.keylen = cipher_d->keylen;
cipher_ctx->sess.key = (void *)key;
cipher_ctx->op = enc ? COP_ENCRYPT : COP_DECRYPT;
- if (ioctl(cipher_ctx->cfd, CIOCGSESSION, &cipher_ctx->sess) < 0) {
+ if (ioctl(cfd, CIOCGSESSION, &cipher_ctx->sess) < 0) {
SYSerr(SYS_F_IOCTL, errno);
- close(cipher_ctx->cfd);
return 0;
}
cryp.flags = COP_FLAG_WRITE_IV;
#endif
- if (ioctl(cipher_ctx->cfd, CIOCCRYPT, &cryp) < 0) {
+ if (ioctl(cfd, CIOCCRYPT, &cryp) < 0) {
SYSerr(SYS_F_IOCTL, errno);
return 0;
}
struct cipher_ctx *cipher_ctx =
(struct cipher_ctx *)EVP_CIPHER_CTX_get_cipher_data(ctx);
- if (ioctl(cipher_ctx->cfd, CIOCFSESSION, &cipher_ctx->sess.ses) < 0) {
+ if (ioctl(cfd, CIOCFSESSION, &cipher_ctx->sess.ses) < 0) {
SYSerr(SYS_F_IOCTL, errno);
return 0;
}
- if (close(cipher_ctx->cfd) < 0) {
- SYSerr(SYS_F_CLOSE, errno);
- return 0;
- }
return 1;
}
static int known_cipher_nids_amount = -1; /* -1 indicates not yet initialised */
static EVP_CIPHER *known_cipher_methods[OSSL_NELEM(cipher_data)] = { NULL, };
-static void prepare_cipher_methods()
+static void prepare_cipher_methods(void)
{
size_t i;
struct session_op sess;
- int cfd;
-
- if ((cfd = open("/dev/crypto", O_RDWR, 0)) < 0)
- return;
memset(&sess, 0, sizeof(sess));
sess.key = (void *)"01234567890123456789012345678901234567890123456789";
cipher_data[i].nid;
}
}
-
- close(cfd);
}
static const EVP_CIPHER *get_cipher_method(int nid)
known_cipher_methods[i] = NULL;
}
-static void destroy_all_cipher_methods()
+static void destroy_all_cipher_methods(void)
{
size_t i;
*****/
struct digest_ctx {
- int cfd;
struct session_op sess;
int init;
};
const struct digest_data_st *digest_d =
get_digest_data(EVP_MD_CTX_type(ctx));
- if (digest_ctx->init == 0
- && (digest_ctx->cfd = open("/dev/crypto", O_RDWR, 0)) < 0) {
- SYSerr(SYS_F_OPEN, errno);
- return 0;
- }
-
digest_ctx->init = 1;
memset(&digest_ctx->sess, 0, sizeof(digest_ctx->sess));
digest_ctx->sess.mac = digest_d->devcryptoid;
- if (ioctl(digest_ctx->cfd, CIOCGSESSION, &digest_ctx->sess) < 0) {
+ if (ioctl(cfd, CIOCGSESSION, &digest_ctx->sess) < 0) {
SYSerr(SYS_F_IOCTL, errno);
- close(digest_ctx->cfd);
return 0;
}
cryp.dst = NULL;
cryp.mac = res;
cryp.flags = flags;
- return ioctl(ctx->cfd, CIOCCRYPT, &cryp);
+ return ioctl(cfd, CIOCCRYPT, &cryp);
}
static int digest_update(EVP_MD_CTX *ctx, const void *data, size_t count)
if (count == 0)
return 1;
+ if (digest_ctx == NULL)
+ return 0;
+
if (digest_op(digest_ctx, data, count, NULL, COP_FLAG_UPDATE) < 0) {
SYSerr(SYS_F_IOCTL, errno);
return 0;
struct digest_ctx *digest_ctx =
(struct digest_ctx *)EVP_MD_CTX_md_data(ctx);
+ if (md == NULL || digest_ctx == NULL)
+ return 0;
if (digest_op(digest_ctx, NULL, 0, md, COP_FLAG_FINAL) < 0) {
SYSerr(SYS_F_IOCTL, errno);
return 0;
}
- if (ioctl(digest_ctx->cfd, CIOCFSESSION, &digest_ctx->sess.ses) < 0) {
+ if (ioctl(cfd, CIOCFSESSION, &digest_ctx->sess.ses) < 0) {
SYSerr(SYS_F_IOCTL, errno);
return 0;
}
static int digest_cleanup(EVP_MD_CTX *ctx)
{
- struct digest_ctx *digest_ctx =
- (struct digest_ctx *)EVP_MD_CTX_md_data(ctx);
-
- if (close(digest_ctx->cfd) < 0) {
- SYSerr(SYS_F_CLOSE, errno);
- return 0;
- }
-
return 1;
}
static int known_digest_nids_amount = -1; /* -1 indicates not yet initialised */
static EVP_MD *known_digest_methods[OSSL_NELEM(digest_data)] = { NULL, };
-static void prepare_digest_methods()
+static void prepare_digest_methods(void)
{
size_t i;
struct session_op sess;
- int cfd;
-
- if ((cfd = open("/dev/crypto", O_RDWR, 0)) < 0)
- return;
memset(&sess, 0, sizeof(sess));
known_digest_nids[known_digest_nids_amount++] = digest_data[i].nid;
}
}
-
- close(cfd);
}
static const EVP_MD *get_digest_method(int nid)
known_digest_methods[i] = NULL;
}
-static void destroy_all_digest_methods()
+static void destroy_all_digest_methods(void)
{
size_t i;
#ifdef IMPLEMENT_DIGEST
destroy_all_digest_methods();
#endif
+
+ close(cfd);
+
return 1;
}
/*
{
ENGINE *e = NULL;
- if (access("/dev/crypto", R_OK | W_OK) < 0) {
- fprintf(stderr,
- "/dev/crypto not present, not enabling devcrypto engine\n");
+ if ((cfd = open("/dev/crypto", O_RDWR, 0)) < 0) {
+ fprintf(stderr, "Could not open /dev/crypto: %s\n", strerror(errno));
+ return;
+ }
+
+ if ((e = ENGINE_new()) == NULL
+ || !ENGINE_set_destroy_function(e, devcrypto_unload)) {
+ ENGINE_free(e);
+ /*
+ * We know that devcrypto_unload() won't be called when one of the
+ * above two calls have failed, so we close cfd explicitly here to
+ * avoid leaking resources.
+ */
+ close(cfd);
return;
}
prepare_digest_methods();
#endif
- if ((e = ENGINE_new()) == NULL)
- return;
-
if (!ENGINE_set_id(e, "devcrypto")
|| !ENGINE_set_name(e, "/dev/crypto engine")
- || !ENGINE_set_destroy_function(e, devcrypto_unload)
/*
* Asymmetric ciphers aren't well supported with /dev/crypto. Among the BSD
projects / openssl.git / blobdiff